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revision 1.66 by jmc, Tue Mar 5 15:36:06 2002 UTC revision 1.2355 by dimitri, Tue Sep 26 15:52:52 2017 UTC
# Line 1  Line 1 
1  $Header$  $Header$
2    $Name$
3    
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7  checkpoint44g_post  o eesupp:
8      - shift standardMessageUnit in eeboot.F and I/O units in mdsfindunit.F
9        for coupling to GEOS AGCM: HACK_FOR_GMAO_CPL option in CPP_EEOPTIONS.h
10    
11    checkpoint66k (2017/09/20)
12    o model/src:
13      - add missing CPP brackets (ALLOW_COST, ALLOW_CTRL in load_fields_driver.F
14        and the_model_main.F)
15    o ctrl:
16      - use zeroRL in place of fc when ALLOW_COST is not compiled (in ctrl_pack.F)
17      - call MDS_READ_FIELD / MDS_WRITE_FIELD instead of deprecated
18        mdsreadfield / mdswritefield (in ctrl_get_gen.F, ctrl_map_ini_gen.F,
19        ctrl_map_ini_genarr.F, and ctrl_map_ini_gentim2d.F )
20    o eesupp:
21      - add CPP option to activate some pieces of code for coupling to GEOS AGCM;
22      - shift commonly used IO unit (in eeboot.F) for coupling to GEOS AGCM.
23    o pkg/bling:
24      - bling_production: Fix typo in calcium carbonate uptake. Also rearranging
25        and cleaning
26    o model/src:
27      - move k loop inside correction_step.F (+ update calling S/R)
28      - collect implicit pressure gradient tendencies in local 2-D array;
29        affect results (at machine truncation level) when using 3-D solver; update
30        output of exp.: exp4 (x1), global_ocean.cs32x15 (x2),hs94.cs-32x32x5.impIGW,
31                        rotating_tank, short_surf_wave,tutorial_deep_convection (x2)
32                        & tutorial_plume_on_slope.
33    
34    checkpoint66j (2017/08/15)
35    o pkg/ptracers:
36      - fix surface forcing under ice-shelf (useShelfIce=T).
37    o pkg/atm_phys:
38      - use hFac weighted average when applying A-grid atm-phys momentum tendency
39        to C-grid dynamics; this ensures wind-stress match mom tendency.
40    o eesupp/src:
41      - change default for opening scratch files to avoid STATUS='SCRATCH'
42      - close scratch files with STATUS='DELETE'
43      - changes affect eeset_parms.F and open_copy_data_file.F and many routines
44        that read namelists (because they close the scratch files)
45      - you can revert to old default by setting USE_FORTRAN_SCRATCH_FILES
46        in CPP_EEOPTIONS.h (tested in ideal_2D_oce/code & lab_sea/code_ad)
47    o pkg/atm_phys:
48      - fix unset arguments in (unused) S/R surface_flux_0d.
49    o eesupp/src:
50      - add argument "procId" to S/R EESET_PARMS to fix  scratchFile1 & 2 setting
51        (case TARGET_BGL or TARGET_CRAYXT) for early call (from eeboot_minimal.F):
52        called with myProcId in eeboot.F and with mpiMyWId in eeboot_minimal.F
53    o pkg/streamice:
54      - remove blank between _EXCH_XY_RL and "()", which my Apple Xcode
55        preprocessor /usr/bin/cpp cannot interpret; 3 instances in total in
56        streamice_driving_stress_fd.F and streamice_advect_2dtracer.F
57    o pkg/diagnostics:
58      - new option to allow to cumulate thickness-factor (hFac) weighted field
59        (if field permitted); implemented by changing sign of "jdiag" pointer
60        (> 0: cumlulate field, < 0: cumulate hFac weighted field).
61        a) restricted to 3-d (Nr levels), level centered diagnostics at U,V or Cell
62           center position (gcode(2)='U','V','M' & gcode(3,5,9:10)='R',' ','MR')
63        b) for now, activated by setting fileFlags 3rd character to 'h'.
64    
65    checkpoint66i (2017/07/18)
66    o pkg/cheapaml:
67      - add parameter "useRelativeWind", default set to False; this change the
68        previous setting which was always using relative wind.
69    o add hooks for the Parallel Data Assimilation Framework PDAF
70        (http://pdaf.awi.de/) in eeboot_minimal.F and the_main_loop.F;
71        to use set CPP-flag USE_PDAF in CPP_EEOPTIONS.h
72    o pkg/exf:
73      - interpolation of vector fields (exf_interp_uv.F): fix bug in calculation
74        of South-Pole mean value.  
75      - interpolation near the poles, case where second additional row is at the
76        pole (or beyond the pole and moved to the pole): change first addition row
77        value to a linear interpolation between pole and 1rst (S.pole)/last (N.pole)
78        row (instead of just a copy of it).
79    o pkg/seaice:
80      - prevent JFNK and KRYLOV solvers from trying to reduce a residual of 0
81      - add the option to compute no-slip du/dy, dv/dx (i.e.
82        the offdiagonal strain rate e12) by a second order approximation
83        on the boundary; works only with JFNK, KRYLOV, or EVP solvers, because
84        it is too messy to implement for the implicit LSR matrix.
85        SEAICE_2ndOrderBC = .FALSE. by default
86    
87    checkpoint66h (2017/06/02)
88    o pkg/seaice:
89      - add new routines to compute stress tensor components and stress tensor
90        divergence to be reused in s/r seaice_lsr and s/r seaice_calc_lhs
91      - change names of diagnostics SIsigI/II (commonly used for invariants)
92        to SIsig1/sig2 (more common for principal components) to avoid confusion
93    o pkf/exf:
94      - add a stop if useRelativeWind with un-updated uwind/vwind (e.g., constant);
95        similarly, stop if rotateStressOnAgrid with constant wind-stress.
96    o pkg/seaice:
97      - remove (comment out) diagnostics SIuwind,SIvwind,SIfu,SIfv (duplicate of
98        EXFuwind,EXFvwind,oceTAUX,oceTAUY) and point them to their equivalent.
99      - add diagnostics of wind-stress over seaice (SItaux,SItauy) and seaice
100        fraction weighted wind stress over ocean+seaice (SIatmTx,SIatmTy).
101    o pkg/diagnostics:
102      - small piece of code to rename (old) diagnostics, when namelist is processed.
103    o model/src:
104      - new run-time param (useMin4hFacEdges) to select method for setting hFacW,S:
105        originally, set as minimum of adjacent hFacC factor ; now (new default)
106        computed from rSurfW,S and rLowW,S by applying same rules as for hFacC.
107        Only matters when useShelfIce=T with particular ice-shelf cavity geometry.
108    o pkg/seaice:
109      - add momemtum advection, off by default, still in test phase
110        most of the momentum advection code is adapted and reused from mom_vecinv
111    o pkg/mom_vecinv:
112      - pass these runtime flags:
113        selectVortScheme, highOrderVorticity, upwindVorticity, useJamartMomAdv
114        as formal parameters to s/r mom_vi_u/v_coriolis, mom_vi_u/v_coriolis_c4,
115        so that these routines can also be used in pkg/seaice.
116    
117    checkpoint66g (2017/04/24)
118    o model/src:
119      - more robust ordering of column thickness integral (=Sum_k(drF*hFac) )
120        to get same expression (regarding machine truncation) in different places
121        in ini_masks_etc.F (e.g., rSurfC,W,S is now exactly zero when it should).
122        Update forward output of experiments: global_ocean.cs32x15 (all 5 except
123        viscA4), isomip (x3), tutorial_global_oce_in_p & tutorial_plume_on_slope.
124    o pkg/shelfice:
125      - ALLOW_SHIFWFLX_CONTROL: move setting of maskSHI from shelfice_update_masks.F
126        to shelfice_init_fixed.F
127      - change S/R SHELFICE_UPDATE_MASKS to SHELFICE_INIT_DEPTHS (still called from
128        ini_masks_etc.F for now) to update ocean upper boundary position according
129        to ice-shelf topography (instead of directly updating hFacC).
130    o model/src:
131      - move call to CTRL_INIT & CTRL_ADMTLM from the middle to the bottom of
132        packages_init_fixed.F to allow other pkgs to set mask and weight fields.
133    
134    checkpoint66f (2017/04/06)
135    o model/src:
136      - add specific run-time param to select level of printed plot-field-maps,
137        set by default to debugLevel. Remove internal param "printDomain".
138    o pkg/seaice:
139      - add flag to add snow mass to seaiceMassC/U/V, the default is
140        SEAICEaddSnowMass=.FALSE., not to change previous results
141    o pkg/bling
142      - Bug fix in bling_production regarding unit conversion for diagnostics
143        being put in the wrong place
144    o model/src:
145      - add back recomputation of rSurfW & S to ensure consistent column thickness
146        (needed for rStar) between Sum_k(hFac*drF) and rSurf-rLow, for now only
147        when using pkg/shelfice; was initially added on 2012/06/01 (ini_masks_etc.F
148        revision 1.51) but was removed accidentally on 2014/02/08 (v1.53).
149    o pkg/autodiff:
150      - clean-up "checkpoint.flow"
151    o pkg/rw (Contribution from Jody Klymak):
152        option to set mds file suffix as function of time in simulation:
153        *) new input parameter "rwSuffixType" (read from PARM03 namelist)
154           to select file suffix format; by default (=0), use iteration number;
155        *) add simple routine to return file suffix according to rwSuffixType;
156        *) in model/src and in most pkgs (except: atm2d, fizhi, regrid & streamice),
157           use new S/R to get file suffix, except for debug output file (diagFreq)
158           and pkgs offline & rbcs input files.
159    o pkg/rw:
160      - uniform processing of "I10" suffix across writing fld routines; used to
161        simplify debug writing of cg2/3d_b/x in solve_for_pressure.F & post_cg3d.F
162        (similar to cg3d.F, cg3d_ex0.F)
163    o pkg/mom_vecinv:
164      - highOrderVorticity in selectVortScheme=2 case: fix c4 coeff in splitted
165        vorticity flux (keep same sum in case vBarXm=vBaXp, uBarYm=uBarYp).
166    o pkg/bling:
167      - Many small changes intended to clean the code.
168        Unnecessary ADJOINT_SAFEs removed ;
169        removed BLING_COST.h BLING_CTRL.h bling_cost.F ;
170        diagnostics added.
171    
172    checkpoint66e (2017/03/14)
173    o pkg/exf:
174      - interpolation with #undef EXF_INTERP_USE_DYNALLOC: move buffer size
175        definition outside EXF_PARAM.h in new header file: EXF_INTERP_SIZE.h;
176        use fixed size buffer (passed to S/R EXF_INTERP & EXF_INTERP_UV) to
177        avoid any dynamic allocation ;
178      - S/R EXF_CHECK: add new check & stop when file-name is defined but not
179        read-in ; add warning when file is read-in but not used within pkg/exf ;
180        + check for buffer-size (if #undef EXF_INTERP_USE_DYNALLOC).
181      - update exf_summary.F (print {FLD}RepCycle).
182    o verification/global_with_exf:
183      - switch on exf interpolation in AD test (just like the forward test)
184    o pkg/mom_vecinv:
185      - add storage directives to avoid recomputations within mom_vecinv.F
186        which were generating seg. fault with gfortran -devel
187    o pkg/ctrl, pkg/smooth:
188      - initialize array halos which were generating seg. fault with
189        gfortran -devel in adjoint mode
190    o pkg/exf:
191      - for each input field, enable to specify a field specific repeat-cycle
192        ({FLD}RepCycle) which defaults to pkg/exf main "repeatPeriod".
193    o verification/lab_sea:
194      - update AD results of primary test and noseaicedyn test after switching
195        to new version of TAF (5.3.13 vs 5.3.2 before); agreement with gradient
196        check stays about the same.
197    o pkg/exf:
198      - fix bug in exf_zenithangle.F for cases select_ZenAlbedo > 0 with useCAL=T.
199      - exf_check: MAX_LAT_INC need only be "loc_nlat-1", not equal to loc_nlat
200    o pkg/bling, USE_EXFCO2 code:
201      - add parameter "apco2RepCycle" (set to pkg/exf "repeatPeriod" by default);
202      - update calls to EXF S/R (use new version: EXF_INIT_FLD & EXF_SET_FLD).
203    o pkg/exf:
204      - rename S/R EXF_INIT to EXF_INIT_VARIA ;
205      - add arguments: fldName (for debug msg) and fldRepeatCycle (set to
206        repeatPeriod) to S/R EXF_SET_UV and to S/R EXF_SET_GEN (renamed EXF_SET_FLD)
207        and update calls in pkg/exf calling S/R (exf_getffields.F & exf_getclim.F) ;
208      - add argument: fldName (for debug msg) to S/R EXF_INIT_GEN (renamed
209        EXF_INIT_FLD) and update calls in exf_init_varia.F
210      - For now, for backward compatibility, keep a simplified version of S/Rs
211        EXF_SET_GEN & EXF_INIT_GEN in file exf_set_gen.F
212      - add and pass new arguments: fldName (for debug msg) and fldRepeatCycle
213        to S/R EXF_GetFFieldRec ; update calls in pkg/obcs/obcs_exf_load.F
214    o tools/genmake2:
215      - replace "bc -l" (only used once) by "expr" (already used).
216    o verification/global_ocean.cs32x15:
217      - turn off pkg/cal (useCAL=F) in secondary FWD exp. "icedyn".
218        Note: exf setting (data.exf) can be compared to other exf secondary exp
219        "seaice" (kept with useCAL=T) which has same time dependent forcing.
220    
221    checkpoint66d (2017/02/13)
222    o pkg/exf:
223      - remove setting of useCAL=T when using pkg/exf (useEXF=T); add warning
224        early on (in packages_boot.F) to stress this change in pkg setting.
225      - In (most) verification exp. that use pkg/exf, add useCAL=.TRUE. to data.pkg
226    o model/src:
227      - move call to ecco_phys to end of time step; this may induce minor
228        cost function changes by shifting time averages by one time step
229        for some variables; this revision resulted in changed adjoint results
230        in MITgcm_contrib/verification_other/global_oce_cs32
231    o pkg/exf:
232      - Change EXF_READ_EVAP to only activate code within #ifdef ALLOW_ATM_TEMP ;
233        this prevents to read evap when ALLOW_ATM_TEMP is undef and other fields,
234        e.g. precip, are not available.
235    o pkg/flt:
236      - flt_init_varia.F: use pickupSuff if specified
237      - add code (within #ifdef DEVEL_FLT_EXCH2) and test case as a first,
238        intermediate, step towards completing pkg/exch2 support within pkg/flt;
239        ifdef DEVEL_FLT_EXCH2 then:
240        - flt_init_fixed.F: comment out stop
241        - flt_exch2.F: conserve ipart, jpart (grid coordinates)
242        - exch2_recv_get_vec.F: transform ipart, jpart (grid coordinates)
243        - flt_mapping.F: attempt to fix longitude diagnostic near date-line
244        - flt_init_varia.F: hack initialization (for testing purposes w. LLC90)
245    o tools/genmake2 & pkg/pkg_depend:
246      - define new type of pkg dependency rule ("=pkg_x"), less strict than
247        the "+" rule, that add the dependent pkg (pkg_x) unless it's disabled
248        (-pkg_x in packages.conf).
249      - change pkg/exf dependency rule from "exf +cal" to "exf =cal";
250      - add "+cal" to dependency list of pkg/ecco (needed to compile).
251      - simplify FWD experiment "offline_exf_seaice" by removing pkg/cal.
252    o utils/matlab:
253      - adding ocean_basin routines for defining basin masks.
254    o pkg/exf:
255      - new S/R EXF_GETFFIELD_START replacing EXF_GETFIELD_START, but with more
256        arguments, allowing to check (and stop) if parameter setting of
257         {FLD}startdate1 & date2 and of {FLD}StartTime are consistent with
258        useCAL= T or F. For now, kept a simplified version of EXF_GETFIELD_START
259        for backward compatibility.
260      - change accordingly calls in exf_init_fixed.F + default {FLD}StartTime in
261        exf_readparms.F ; apply same changes to pkg/icefront (for SGRunOff field).
262    o pkg/bling (USE_EXFCO2 code):
263      - fix missing setting of apco2StartTime according to apco2startdate1 & date2
264        by adding a call to S/R EXF_GETFFIELD_START.
265    o pkg/exf:
266      - allows to compile without pkg/cal (but disabled by current dependency
267        rules, i.e., default "pkg/pkg_depend"). Minimal changes to enable to
268        run with useCAL=F ; this involves setting directly {FLD}StartTime instead
269        of {FLD}startdate1 & date2 ; consistency check not yet coded.
270    o verification/global_ocean.cs32x15:
271      - fix all data.exf for a shift of 1 day in all field startdate1 so that it now
272        corresponds to middle of 1rst month; update outputs (2 fwd + 3 adm + 3 tlm).
273    o pkg/exf:
274      - allow to use EXF_ZENITHANGLE without pkg/cal + simplify (saving some
275        calculations); change FWD experiment global_ocean.cs32x15
276        (#define ALLOW_ZENITHANGLE) to test/check that this code compiles.
277    o pkg/exf:
278      - In preparation for addition to NAMELIST, rename internal (_RL) parameter
279         {FIELD}startdate to {FIELD}StartTime
280        Note: new name also fit better the content, i.e, a start time in second.
281    o eesupp/src:
282      - add 1 argument to S/R EEBOOT & EEBOOT_MINIMAL for interface with ESMF
283    o pkg/exf:
284      - add option ALLOW_READ_TURBFLUXES (and corresponding set of parameters)
285        to allow to read-in Sensible & Latent Heat flux ;
286      - simplify pkg/exf main options:
287        1) move small piece of code (case ALLOW_ATM_TEMP undef) out of
288           exf_bulkformulae.F into exf_wind.F so that exf_bulkformulae.F is
289           compiled only when both ALLOW_ATM_TEMP & ALLOW_BULKFORMULAE are defined;
290        2) make call to EXF_RADIATION and to EXF_WIND independent of CPP option
291           ALLOW_BULKFORMULAE which now only applies to S/R EXF_BULKFORMULAE ;
292        3) improve options documentation in EXF_OPTIONS.h.
293    o pkg/ecco:
294      - cost_gencost_customize.F,ecco.h,ecco_phys.F,ecco_readparms.F, and
295        ecco_summary.F: add passive tracer cost functions to gencost;
296        m_ptracer and m_boxmean_ptracer
297    o pkg/ctrl:
298      - ctrl_map_forcing.F: pass myIter and myTime to ctrl_map_forcing as input
299        parameters; move myIter .EQ. nIter0 inside ctrl_map_forcing; add to list
300        of implemented gentim2d contol parameters: xx_qnet, xx_empmr, xx_qsw,
301        xx_sst, xx_sss, xx_pload, xx_saltflux, xx_fu, xx_fv, xx_fe, xx_fn
302    o model/src:
303      - forward_step.F: pass myIter and myTime to ctrl_map_forcing as input
304        parameters; move myIter .EQ. nIter0 inside ctrl_map_forcing
305    o pkg/exf:
306      - exf_getffields.F: add to list of implemented gentim2d contol parameters:
307        xx_lwflux, xx_swflux, xx_evap, xx_apressure, xx_areamask
308    
309    checkpoint66c (2017/01/19)
310    o verification:
311      - add new option "-src" to testreport to only produce source code (*.f),
312        including taf output src code (if using '-adm'/'-tlm' option).
313    o pkg/exf:
314      - add saltflx :: Net upward salt flux in psu.kg/m^2/s
315    o pkg/diagnostics:
316      - add run-time variable diagMdsDir to specify a subdirectory for
317        diagnostic output when mds is being used and mdsioLocalDir is not.
318    o pkg/mnc:
319      - mnc_utils.F: edit stop message
320    o pkg/autodiff:
321      - autodiff_ini_model_io.F: PRINT_MESSAGE, clean-up comments, add _*_MASTER,
322        add HAVE_SYSTEM bracket around system call to mkdir
323    o pkg/profiles:
324      - profiles_findunit.F, profiles_init_fixed.F, profiles_interp.F,
325        profiles_readparms.F: call ALL_PROC_DIE before 'stop'
326      - profiles_ini_io.F: use PRINT_MESSAGE, clean-up comments, add _*_MASTER,
327        add HAVE_SYSTEM bracket around system call to mkdir
328    o pkg/smooth:
329      - smooth_filtervar2d.F, smooth_filtervar3d.F: call ALL_PROC_DIE before 'stop'
330      - smooth_init2d.F, smooth_init3d.F: move print statements to readparms
331      - smooth_readparms.F: add cleaner print statements from smooth_init?d.F
332    o pkg/exf:
333      - check: count errors and stop cleanly at the end (call to ALL_PROC_DIE);
334        issue error message when climsst_interpMethod.GT.0 and climsst_lon_inc > 500
335        generalize tests on interpMethod, nlat, and lon_inc to all exf variables.
336      - summary: skip detailed field report if not used (empty file-name).
337    o tools/xmakedepend:
338      - In case line editor "ed" is missing, switch to "sed" command to clean-up
339        Makefile from previous dependencies (anything after "# DO NOT DELETE" line).
340    o pkg/exf:
341      - change definition of "hflux" input file to always include Short-Wave;
342        this is now consistent with hflux computation (if using bulk-formulae)
343        and hflux diagnostic & documentation (in EXF_FIELDS.h).
344    
345    checkpoint66b (2016/12/01)
346    o model & momentum pkgs:
347      - implement fully implicit bottom friction combined with implicit surf.
348        pressure, for now, only in hydrostic formulation:
349        + to use: compile with #define ALLOW_SOLVE4_PS_AND_DRAG in CPP_OPTIONS.h
350          and run with selectImplicitDrag=2 ;
351        + currently missing diagnostics of bottom drag and vert. viscosity tendency;
352      - partial implicit time-stepping (bot. friction + vert. visc first, then
353        surf. press) corresponding to selectImplicitDrag=1 should be applicable
354        to NH formulation but not available until we solve for surf. pressure
355        increment (instead of full etaN).
356      - change exp. global_ocean.cs32x15.thsice to test implicit bottom drag
357        with implicit vertical viscosity.
358    o pkg/seaice: add linear remapping scheme (Lipscomb 2001) to ITD model
359      - this is a first version that includes many regularisations that may
360        not all be necessary, to be sorted out,
361      - turned on by runtime parameter SEAICEuseLinRemapITD (true by default)
362      - change one verification experiment in seaice_itd to use and test new code
363      - seaice_growth: catch a case where the argument of log can be zero
364        or smaller (important for code stability)
365    o model/src:
366      - modify SOLVE_DIAGONAL_LOWMEMORY version of solve_tridiagonal.F
367        & solve_pentadiagonal.F to enable to re-used inverse matrix for solving
368        similar A.X'=Y' system (with same matrix A) in subsequent calls;
369        switch based on errCode (In/Out) argument value; in calling routines,
370        initialise errCode before first call.
371    
372    checkpoint66a (2016/10/18)
373    o pkg/bling:
374      - BLING package now loads in atmospheric pCO2 file using exf package routines
375        Enable with #define USE_EXFCO2 in BLING_OPTIONS.h
376    o model/src & pkg/ptracers:
377      - with INCLUDE_IMPLVERTADV_CODE defined, also call MOM_U,V_IMPLICIT_R &
378        GAD_IMPLICIT_R (instead of IMPLDIFF) when just implicitViscosity and
379        implicitDiffusion (respectively) are used (even without momImplVertAdv
380        or temp,salt,PTRACERS_ImplVertAdv).
381    o model/src & generic_advdiff:
382      - add parenthesis in main diagonal calculation of implicit vertical
383        diffusion matrix (impldiff.F & gad_implicit_r.F).
384        This affects results at machine truncation level; update output of many
385        verification experiments (31 fwd ; 10 adm ; 8 tlm ; 3 oad).
386    o pkg/mom_commom & generic_advdiff:
387      - add deep atmosphere and anelastic scaling factor in implicit vertical
388        advection routines (mom_u,v_implicit_r.F & gad*_impl*_r.F).
389    o model/src:
390      - remove few unnecessary temp array copies in solve_tridiagonal.F
391        & solve_pentadiagonal.F
392    
393    checkpoint65z (2016/09/28)
394    o pkg/seaice: fix multithreading for seaice_fgmres.F
395      - remove unecessary variables from common blocks
396      - use extra dimension MAX_NO_THREADS for all variables of the Krylov space
397        basis, that are stored in commom blocks (including integer variable i1)
398      - clean up code a little by removing commented lines that refer to
399        original code
400      - turn on multi-threaded test for experiment offline_exf_seaice.dyn_jfnk.
401    o MITgcm manual:
402      - add uptodate pkg/ecco documentation to the manual (section 8.1; ecco.tex),
403        preliminary documentation for generic controls (8.3; ctrl.tex),
404        a placeholder for smooth (8.4; smooth.tex), and comment out the deprecated
405        ecco_costfunction.tex
406    o pkg/ecco:
407      - update and cleanup list of CCP options
408      - re-assign gencost_mask to specify masks rather than gencost_errfile; 'c'
409        is now always passed to cost_generic; gencost_mask is now MAX_LEN_FNAM
410      - add checks that retired run-time options are not used, and in relation
411        to gencost_mask and gencost_errfile
412      - finish deprecating gencost_scalefile, gencost_smooth2Ddiffnbt, and
413        gencost_nrecperiod
414      - fix m_eta computation for virtual salt flux case
415      - add m_horflux_vol case (selected via gencost_barfile) that computes
416        transports via cost_gencost_boxmean (gencost_flag=-3)
417      - use gencost_flag more systematically (i.e., avoid using gencost_name)
418        for code switches (aside from physical variable selection)
419    o pkg/seaice: make seaice_fgmres.F fit for multithreading; this first
420      attempt appears to be a bit of a hack and my need some repair down the road
421    o pkg/exf:
422      - interpolation near South Pole: fix criteria on input field latitude.
423    o pkg/icefront & pkg/exf:
424      - move setting of icefront Sub-Glacial RunOff forcing (currently unused)
425        from pkg/exf (read from data.exf) to pkg/icefront (read from data.icefront)
426    o pkg/exf:
427      - replace CPP option ALLOW_EXF_OUTPUT_INTERP with run-time parameter
428        "exf_output_interp" (in namelist: EXF_NML_04); change output file name
429        (add suffix "_out" instead of a prefix); keep same record number as in
430        input file but always write record 1 first (to avoid a STOP in I/O S/R).
431        Change output file content by writing interpolated field before applying
432        land-sea mask (helpful for debug).
433      - 2 compon. vector interpolation with rotation: apply scaling factor on
434        each compon. (Eastward and Northward) just before rotation.
435    o pkg/bling:
436      - Cleaned package. Removed not needed code and comments.
437      - adjoint example now works
438        (MITgcm_contrib/verification_other/global_oce_biogeo_bling/code_ad)
439    o pkg/ptracers:
440      - add Bruno Deremble's code to complete the linear surface correction
441        for tracer conservation;
442      - enabled for individual ptracers by PTRACERS_linFSConserve(iTr)=.TRUE.
443    
444    checkpoint65y (2016/07/29)
445    o pkg/debug (stats):
446      - change GLOBAL_SUM to GLOBAL_SUM_TILE (result independent of tile to
447        proc/thread mapping);
448      - fix Min & Max for case where 1 thread has only empty tiles;
449      - use RL variable to count number of wet grid points (with big domain,
450        can be too large to fit into integer*4).
451    o pkg/monitor:
452      - use RL variable to count number of wet grid points (but used only for del2)
453      - add new routine to compute Advective CFL within tracer time-stepping with
454        writing delayed until next monitor output.
455    o pkg/obcs:
456      - fix bug in OBCS_BALANCE_FLOW (OBCS_balanceFacN misspelled OBCS_balanceFacW)
457    o pkg/cal:
458      - calandar-dump: treat case myTime < timePhase in the same way as in
459        eesupp/src/diff_phase_multiple.F (when not using calandar-dump).
460    o pkg/dic & seaice:
461      - fix compilation of ocean component for coupled atm+ocn model with
462        seaice dynamics & dic.
463    
464    checkpoint65x (2016/06/11)
465    o add a license text file in main MITgcm tree.
466    o added pkg/bling:
467      - intermediate complexity biogeochemical model
468      - see bling_description.txt for details
469      - verification experiment is global_oce_biogeo_bling (for now, in
470        Contrib/verification_other/); tested daily on baudelaire with gfortran.
471      - add entry point in pkg/gchem for new pkg "bling".
472    o pkg/seaice: fix tensile stength computation
473      - replace global field tensileStrength by tensileStrFac
474      - tensileStrFac can be computed once in S/R seaice_init_varia
475      - fortunately that does not affect any verification results
476    
477    checkpoint65w (2016/05/12)
478    o pkg/ctrl/ctrl.h: fix a comma in common block list, so that code compiles
479         with ECCO_CTRL_DEPRECATED defined
480    o verification/global_ocean.cs32x15:
481      - change secondary test "viscA4" to also test "selectP_inEOS_Zc=3"
482        with "selectNHfreeSurf=1".
483    o model/src (non-hydrostatic free-surface):
484      - More "natural" expression of NH free-surface term (case selectNHfreeSurf=1):
485        was: tmpSurf/(1+tmpSurf); changed to: 1/(1+Gamma) with Gamma=1/tmpSurf.
486      - Calculate surface vertical velocity after 2-D solver adjustment (accounts
487        for EmPmR if RealFreshWaterFlux); used in RHS (cg3d_b) if exactConserv
488        and used to compute dPhiNH (in post_cg3d.F) if selectNHfreeSurf=1.
489        This fixes EmPmR contribution when selectNHfreeSurf=1 & RealFreshWaterFlux.
490      - Update output (changes at machine truncation level) of verification exp:
491        exp4 (11 digits for cg2d), global_ocean.cs32x15.viscA4 (11.d),
492        short_surf_wave (13.d) and tutorial_deep_convection.smag3d (12.d).
493    o pkg/seaice: ITD code
494      - fix picking up from a single category model by initialising
495        heff/area/hsnowITD = 0. in seaice_itd_pickup.F
496      - split a long warning message in seaice_check_pickup.F into two lines,
497        because NEC SX-ACE cannot deal with the long line.
498    o model/src:
499      - fix missing dPhiNH in pressure_for_eos.F (case: selectP_inEOS_Zc=3)
500    o pkg/seaice:
501      - add missing checks for SEAICE_ALLOW_KRYLOV and SEAICE_ALLOW_BOTTOMDRAG
502    o pkg/seaice:
503      - add basal stress as parameterisation for grounding ice
504        following Lemieux et al. (2015)
505      - turn on by setting new parameter SEAICEbasalDragK2 to a value
506        larger than 0. Lemieux et al. (2015) recommend 15.
507      - The adjoint complains with extra recomputations so there is also a
508        new cpp-flag SEAICE_ALLOW_BOTTOMDRAG that is undefined by default in
509        order to postpone the problem
510      - compile the new code in lab_sea
511    o verification/halfpipe_streamice:
512      - update both TAF and OpenAD adm output (machine truncation differences)
513    
514    checkpoint65v (2016/04/08)
515    o verification/advect_xz:
516      - increase overlap size from 3 to 4 and add new secondary test for PQM
517        advection scheme (with mono & wino limiter).
518      - change main exp. to test PPM (with weno limiter) adv.scheme on Temp.
519    o model/src:
520      - new parameters "top_Pres" & "seaLev_Z" (replacing Ro_SeaLevel and recently
521        added phi0Ref) to set vertical axis origin and phiRef origin;
522        keep Ro_SeaLevel for backward compatibility (with a warning).
523       According to coordinate and fluid type:
524        OCN in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(1), @ the top)
525        ATM in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(Nr+1) @ bottom)
526        OCN in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(Nr+1)/g, @ the top)
527        ATM in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(1)/g, @ the bottom)
528      - remove Ro_SeaLevel from ATM experiment parameter files;
529      - in tutorial_global_oce_in_p, remove Ro_SeaLevel and set top_Pres to the
530        complement; update output.txt (changes at machine truncation level).
531    o pkg/seaice/seaice_evp.F
532      - simplify computation of deltaZ and zetaZ to simple averaging following
533        Bouillon et al. (2013). This removes a lot of code, but also changes
534        verification experiment lab_sea.hb87 -> updated
535    
536    checkpoint65u (2016/03/14)
537    o pkg/generic_advdiff:
538      - from Darren: add PPM and PQM advection schemes (number 40-42 and 50-52)
539        with 2 types of limiter (see: Engwirda & Kelley, submit. to JCP);
540        Note (from Darren): unlimited PPM/PQM scheme (40 & 50) are just for
541        testing and not for actual use.
542    o model/src:
543      - add parameter "phi0Ref" to specify reference [pressure/geo] potential at
544        origin r = rF(1);
545      - add options (parameter selectP_inEOS_Zc) to select which pressure to use
546        in EOS for height coordinate: enable to include NH Pressure or to use
547        more accurate pressure vertical profile; options not linked to EOS type
548        (as previously, e.g., JMD95P/JMD95Z) but set default according to EOS type;
549      - start to implement variable gravity (along vertical): for now, only with
550        z-coords (not even z*).
551      - add Ideal Gas equation of state for height coordinate.
552      - update OpenAD output (affected at machine truncation level) of exp:
553        global_ocean.90x40x15, OpenAD (std) and tutorial_global_oce_biogeo.
554    o pkg/exf:
555      - add ALLOW_EXF_OUTPUT_INTERP cpp switch to output the result
556        of exf interpolation (before any rescaling, rotation or interpolation
557        to velocity point) for each field that gets loaded from file. This option
558        identically mimics the input file organization (e.g. record numbers in year
559        by year input files) besides the change in horizontal grid.
560      - add rotateStressOnAgrid run-time switch so that wind stress fields
561        can be provided on the A-grid in zonal/meridional direction and
562        rotated on the fly. This only applies to the case when the exf
563        interpolation is off and rotateStressOnAgrid is false by default.
564    o model/src:
565      - rename internal parameter "useDynP_inEos_Zc" to "storePhiHyd4Phys" (since
566        it's also used with pkg/atm_phys) and add few more parameters (but still
567        inactive, src code yet to come)
568    
569    checkpoint65t (2016/02/10)
570    o pkg/atm_phys:
571      - from Ruth Geen: add optical depth dependence on CO2 concentration.
572    o model/src:
573      - fix vertical inter/extra-polation of density factor rhoFacF (for anelastic)
574        for the case setCenterDr=T (delRc set from "data"); add output of rhoFacC&F.
575        Update output of exp. deep_anelastic (changes at truncation level).
576    o tools:
577      - add a hack in "remove_comments_sed" (used only with TAF) for recent
578        version of OpenMPI (shipped with FC.23): comment out the new header
579        file "mpif-sizeof.h" which causes problems to TAF.
580    o pkg/seaice:
581      - change the termination criterion so that maxits (SEAICElinearIterMax)
582        has an effect
583      - unify iteration parameters for implicit solvers (JFNK and Picard)
584        SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS
585        SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER
586        SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner
587        SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner
588        SEAICEnonLinTol     replaces JFNKgamma_nonlin
589      - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN
590      - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and
591        use with SEAICEuseKrylov
592    o pkg/seaice/seaice_lsr.F
593        fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only
594        relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have
595        an effect.
596    o pkg/seaice: add two new parameters
597      - SEAICEuseLSR to simplify the logic in seaice_dynsolver (this
598        parameter is not in any namelist)
599      - SEAICEusrPicardAsPrecon to allow s/r seaice_lsr to be used as
600        a preconditioner for the non-linear Newton iteration of the JFNK
601        solver
602    o pkg/seaice/seaice_lsr.F: replace 1./SEAICE_deltaTdyn with recip_deltaT,
603      affects some experiments at truncation level:
604      - global_ocean.cs32x15.icedyn (11 digits),
605      - global_ocean.cs32x15.seaice (11 digits),
606      - seaice_itd (12 digits), seaice_itd.lipscomb07 (12 digits) -> update
607      - also update global_ocean.cs32x15 adjoint and tangent-linear results
608    o pkg/salt_plume & pkg/thsice:
609      - for coupled  set-up with pkg/thsice in ATM and pkg/salt_plume in OCN,
610        connect salt_plume flux to ATM-OCN coupling pkgs interface:
611       a) in ATM: also cumulate salt-plume flux in S/R THSICE_SALT_PLUME (for
612         export to coupler interface) even without compiling pkg/salt_plume ;
613       b) in OCN: apply coupler salt-plume flux to pkg/salt_plume field
614         (saltPlumeFlux) just before exch call, in S/R SALT_PLUME_DO_EXCH.
615    o pkg/dic:
616      - use the updated seaice fraction (from seaice pkgs) for DIC forcing
617        instead of the previous time-step value ; done in new S/R DIC_FIELDS_UPDATE
618        called from the top of dic_biotic_forcing.F (instead of in DIC_FIELDS_LOAD);
619      - move also update with values from ATM-OCN Coupler in the same new S/R
620        (previously done in ocn_apply_import.F).
621    o tools/adjoint_options:
622      - specify explicitly "-f77" or "-f90" in default ad-optfile since TAF (default)
623        has been changed on Jan 14, 2016.
624    o pkg/ggl90:
625      - add alternative discretisation of vertical shear (off by default), to
626        compute the mean (@ grid-cell center) of vertical shear compon instead of
627        vertical shear of mean flow (@ grid-cell center).
628      - add correct parenthesis in ALLOW_GGL90_SMOOTH code to get the same truncated
629        results on adjacent faces of cubed-sphere grids; this fix the restart.
630    o pkg/atm_compon_interf:
631      - skip time-ave over cpl_atmSendFrq of Sea-Level Pressure (atmSLPr) and just
632        pass last value, stored directly before export to CPL ;
633        Note: this affects results of Coupled set-up where OCN uses useImportSLP=T
634      - remove atmSLPr from pickup files (no longer needed for restart)
635    
636    checkpoint65s (2016/01/13)
637    o eesupp & genmake2:
638       - first check for Function ETIME and, if it fails, then check for subroutine
639         ETIME and consistent output; use the appropriate version in timers.F
640    o model/src:
641      - to check restart test, add option to apply EXCH to U,V earlier, just before
642        integr_continuity; turned off by default.
643    o pkg/dic:
644      - remove CPP option USE_ATMOSCO2 (not needed)
645    o tools/tst_2+2:
646      - try to ignore difference between +0 and -0 in binary file, causing test
647        to fail for no good reason.
648    o eesupp & genmake2:
649      - put back modif from Jinxuan Zhu - change etime fct call to S/R call -
650        but also check (in genmake2) that test runs and returns meaningful results.
651    o coupler pkgs:
652      Finish implementation of optionally-exchanged variable switches (started on
653       Nov 12) with addition of few more exchanged fields, including 2-way exchange
654       of pkg/thsice vars to allow to use seaice dynamics (from pkg/seaice) & seaice
655       advection in OCN component; this requires sequential coupling.
656      coupler (pkg/atm_ocn_coupler):
657      - add argument msgUnit and iter number to CPL_SEND/RECV_ATM/OCN_FIELDS
658        routines (useful for debug).
659      - only export/import optionally exchanged fields (RunOff, seaice, Salt-Plume
660         flux, DIC fields) if corresponding switch is ON.
661      - add option to export RunOff to OCN (to use for DIC river input)
662      - add 2-way thSIce vars exchange; check for consistent cpl_sequential setting.
663      components (pkg/atm_ & ocn_compon_interf):
664      - to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around
665        optionally exchanged fields; add a check & stop in cpl_readparms.F.
666        ATMCPL.h: ALLOW_LAND for RunOff, ALLOW_THSICE for seaice, ALLOW_AIM for CO2;
667        OCNCPL.h: ALLOW_SALT_PLUME, ALLOW_DIC for DIC, ALLOW_THSICE for 2-W thsice.
668      - rename:   fracIce     -> sIceFrac_cpl (<- match coupler var name)
669        + in ATM: fracIceTime -> sIceFracTime ; seaIceTime -> sIceMassTime.
670      - add 2-way thSIce vars exchange ; add Salt-Plume flux ; add RunOff in OCN.
671      - hold in common block coupler optionally-exchanged variable switch
672        and set default "useImportXXX" accordingly; + check & stop if inconsistent.
673      - add diagnostics for all imported fields from coupler (in both OCN & ATM);
674        this is intended to replace the OCN cplFldtave.* output files (not updated
675        to contain new additional exchanged fields).
676    o pkg/dic:
677      - fix an other bug (also from 2014/08/30) in dic_atmos.F, in dic_int1=3 code.
678    o pkg/thsice:
679      - when coupled to ATM (useCoupler) with thSIce_skipThermo=T, skip reading
680        and writing of thsice pickup files.
681    o pkg/atm_compon_interf:
682      - move all field individual export-call out of cpl_export_import_data.F
683        into new S/R ATM_EXPORT_FIELDS
684    o pkg/atm_compon_interf:
685      - store state variables (for now, only thSIce fields) just before beeing
686        exported (in cpl_export_import_data.F, like on ocean side) instead of from
687        atm_store_my_data.F like all exported fluxes.
688      - new version of pickup_cpl: write field names into meta file and read meta
689        file to find field postion in pickup. Also only write/read fields meeded for
690        restart (same logic as main pickup file ; also using pickupStrictlyMatch)
691    o pkg/dic:
692      - fix bug (added on 2014/08/30) in dic_atmos.F for the case dic_int1= 2 or 3.
693    o pkg/seaice: add new parameter SEAICEpressReplFac to choose between
694        pressure replacement method (=1., default) or original Hibler (1979) (=0.)
695        value can be from domain [0,1] to average between the two methods
696    o pkg/atm_phys:
697      - allow to provide 2-d map of albedo and mixed-layer depth from files (but
698        hold fixed in time).
699    
700    checkpoint65r (2015/12/21)
701    o pkg/seaice:
702        fix bug in tridiagonal solvers for SEAICE_OLx/y>0, this affects the JFNK
703        solver (offline.dyn_jfnk) and global_ocean.cs32x15.seaice -> updated
704    o pkg/seaice:
705      - fix a bug in computing areaS in (J-J -> J-1) that affects runs
706        when SEAICEscaleSurfStress=.TRUE.,
707      - apply areaW and areaS in S/R seaice_calc_lhs
708    o pkg/atm_phys:
709      - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
710        (shortwave & longwave, net & downward) and diagnostics of temp. tendency
711        for individual contribution (convection, LSC cond, radiation)
712      - add Ruth Geen etal, GRL 2016, radiation options (see paper supp.
713        information); activated with: solar_exponent=0. and wv_exponent=-1.
714    o pkg/ggl90:
715      - within IDEMIX add upper limit for horizontal group velocity to
716        avoid instability problems in the explicit horizontal diffusion term for
717        long time steps or high resolution
718    o pkg/diagnostics:
719      - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
720        (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
721    o testreport:
722      - remove "-v" (verbose option) in default mpirun command.
723    o pkg/seaice/seaice_growth:
724      - catch potential division by zero in ITD code, does not change
725        verification results
726    o pkg/ecco:
727      - retire old codes to the Attic. The calls to retired functions are
728        left in a commented form in case they ever need to be re-activated.
729      - ecco_check.F: issue warning if any old CPP option is
730        defined that corresponds to retired codes -- then stop.
731    o pkg/atm_compon_interf:
732      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
733        coupler: use last time-step value instead of average over cplSendFrq_iter
734        time-step, similar to what is done for seaIceMass.
735        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
736    o eesupp & genmake2:
737      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
738        <= remove until a fix is found for some ifort version on ia32 machine.
739    o pkg/seaice/seaice_evp:
740      - refine residual computation
741    
742    checkpoint65q (2015/11/18)
743    o pkg/seaice/seaice_evp:
744      - fix residual computations so that they no longer affect the actual
745        simulation code
746      - fix seaice_readparams to be able to actually set new parameters
747        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
748    o model/src:
749      - fix wrong truncation (single prec) from "FLOAT" function in expressions
750        like: deltaT*FLOAT(myIter) when myIter is large:
751         a) replaced by DFLOAT (if not seen by TAF);
752         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
753    o pkg/aim_v23:
754      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
755        when pickupSuff is set ; do write rolling pickups + at the end of the run.
756    o pkg/atm_ocn_coupler + ocn_compon_interf:
757      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
758        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
759        add corresponding call in DO_OCEANIC_PHYS.
760    o coupler pkgs:
761      Start a new way to set-up optionally-exchanged variables (previously, only
762       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
763       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
764       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
765       compononent param default can be set accordingly).
766      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
767       but rather applies to a group a fields (going both ways like for DIC)
768       and corresponds to an option of coupling config.
769      coupler (pkg/atm_ocn_coupler):
770      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
771        and read namelist directly (without eessup S/R calls) instead of
772        in the very un-flexible old way, 1 param per line, in fixed order;
773      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
774        cleanly in CPL_CHECK_CPLCONFIG
775      - add new coupling-exchange selectors (some not yet active) including
776        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
777                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
778      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
779        component ; called directly from coupler.F, after comp. registrations;
780      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
781         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
782          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
783      components (pkg/atm_ & ocn_compon_interf):
784      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
785        CPP header file in all pkg source files.
786      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
787        ATM/OCN_CHECK_CPLCONFIG;
788      - add error-counter to track errors (e.g., in "data.cpl") and to stop
789        cleanly in ATM/OCN_CHECK_CPLCONFIG;
790      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
791        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
792        before PACKAGES_READPARMS;
793      verification/cpl_aim+ocn/:
794      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
795        "data.cpl" for coupler (in input_cpl).
796    o eesupp/inc:
797      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
798        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
799        to always cumulate tile local-sum in the same order (still uses
800        MPI_Allreduce like standard code).
801      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
802        that are now identical to standard version (in eesupp/inc).
803    o pkg/shelfice:
804      - add SHELFICETransCoeffTFile for initializing spatially varying
805        heat and salt transfer coefficients
806    o pkg/atm_compon_interf & ocn_compon_interf:
807      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
808        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
809      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
810    o pkg/atm_ocn_coupler:
811      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
812    o pkg/rbcs:
813      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
814        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
815      - add a short report (to STDOUT) about RBCS-mask settings.
816    
817    checkpoint65p (2015/10/23)
818    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
819        there is no adjoint test for EVP, we don't know what it does to the adjoint
820        solution, but at least there are no more recomputation warnings left
821    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
822        a chance of giving the same results as a fully converged VP (JFNK) solver
823    o tools/adjoint_options/adjoint_diva:
824      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
825    o pkg/streamice:
826      - spotted bug in streamice_driving_stress using dyG where should have been dxG
827    o pkg/exf:
828      - remove STOP statement that prevented to use wind or (wind-)stress
829        interpolation for constant-in-time forcing fields (wind/stress period = 0).
830    o pkg/seaice:
831      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
832        5 additionals 2D fields and 6 new store directives
833      - change logic in seaice_readparms.F: EVP code can now be turned on in
834        various ways, setting SEAICE_deltaTev is no longer required,
835        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
836        or SEAICEaEVPcoeff
837    o pkg/shelfice/shelfice_thermodynamics.F
838      - redefining uLoc/vLoc to u/v, instead of 2u/v
839    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
840      - this is an intermediate state of a truely converging EVP that has
841        the potential of outperforming implicit VP methods, I do not recommend
842        using it yet.
843      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
844        and all parameters are hardwired
845      - for convergence it still requires very smooth regularisations, that means,
846        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
847        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
848        specific averaging appears to be required, still subject to tuning
849      - still needs cleaning and I need to turn parameter into runtime parameters
850      - add code to compute and print residuals of iteration, compile with
851        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
852    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
853      that entered with r1.54 on Sep04, 2015, -> update results
854    
855    checkpoint65o (2015/09/14)
856    o pkg/mom_vecinv & mom_common:
857      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
858        called from there.
859      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
860        allows to use Vector-Invariant form in deep atmos and anelastic formulation
861    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
862      and Koenig-Beatty+Holland (2012)
863      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
864      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
865      - requires an extra input argument for S/R seaice_calc_viscosities
866      - tensileStrength's depth dependence is different from Itkin et al. (2015)
867        (to be changed and played with, for now exponential)
868    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
869      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
870        by AREA according to Connelly et al. (2004), JPO.
871      - For EVP and the LSR solver, the implicit part of the drag term is
872        the only non-zero term in the denominator when there is no ice (which
873        prevented running the model with zero ice-ocean drag). If
874        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
875        (or zero main diagonals BU/BV) which need to be caught. A practical
876        consequence is that for open water, the momentum equation reduce
877        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
878        they happen to be zero, often leading to a non-zero solution over
879        open water.
880    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
881        efficient EVP method.
882      - introduce area-weighted averages for e12 (analogously to
883        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
884        remain, but also changing the order of terms in the previous average
885        changed the results as much) -> update experiment
886      - add SEAICE_DELTA_SMOOTHREG code
887      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
888        TEM-code
889      - adjust loop bounds so that only required fields are computed
890      - add new averaging code for zetaZ/deltaZ (again similar to
891        seaice_calc_viscosities.F), inactive by default for now (will change
892        results again), but will replace old code eventually
893    o eesupp/src:
894      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
895        to always cumulate tile local-sum in the same order
896        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
897        Still uses MPI_Allreduce (like standard code) but on array of tiles
898        and should be faster than GLOBAL_SUM_SEND_RECV code.
899      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
900        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
901      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
902         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
903         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
904         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
905         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
906    
907    checkpoint65n (2015/07/29)
908    o pkg/thsice:
909      - add a warning when used with pkg/aim but without updating SST
910        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
911    o pkg/offline:
912      - change where Offline-Fields are loaded, from load_fields_driver.F to
913        directly within FORWARD_STEP, just after updating iter number and time;
914      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
915        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
916       These changes allow:
917        a) to recover exactly on-line results using deltaToffline=deltaTClock,
918        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
919        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
920        time-step, both with GM & KPP files and with recomputing these fields;
921        b) no needs to switch on staggerTimeStep anymore;
922        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
923      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
924    o pkg/offline:
925      - change (rarely used) offset-iteration parameter to an offset time (in s):
926        can easily recover previous offset-iter effect by setting offset-time
927        (offlineTimeOffset) to offset-iter x deltaToffline;
928      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
929        in KPP as part of surface buoyancy forcing) in offline run.
930      - fix ptracers KPP non-local term in the case where KPP is re-computed.
931    o OpenAD
932      - Adding preliminary ggl90 test to OpenAD verification.
933        Config. with ggl90 currently diverges after 64 time steps
934        so will need more work to become more stable
935      - Adding preliminary kpp test to OpenAD verification.
936        required small tweakes in kpp_routines.F
937      - Merge and update from Krishna Narayanan's contrib area:
938        * Add one variable for preliminary OpenAD DIVA
939        * Add replacement time-stepping for OpenAD DIVA
940        * genmake2 flag -diva (but only for OpenAD; preliminary)
941        * required modifs for OAD_support
942        successful preliminary test for tutorial_global_oce_biogeo/
943    o pkg/seaice:
944      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
945      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
946        delta with a smooth function in s/r seaice_calc_viscosity
947        (no effect on EVP)
948      - rename local suffix "sqr" into "sq" for more consistent variable names
949    o pkg/seaice:
950        add new parameter SEAICE_deltaMin that is used ***only***
951        for regularizing Delta (and nothing else, like the parameter
952        which is also used for all sorts of things SEAICE_EPS).
953        Defaults to SEAICE_EPS for backward compatibility only.
954    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
955        the wrong key by inialising it before use -> fixes a recomputation
956        problem but does not fix the gradient
957    o pkg/layers:
958      - move resetting of flux arrays to outside the iLa loop
959        (this caused layers_diapycnal to not work with more than one layer coord.)
960      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
961    o pkg/layers:
962      - remove from common block 3D layers fields (used to diagnose transport
963        in tracer coords) and declare them as local arrays in layers_calc.F
964    o pkg/seaice:
965      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
966        in lab_sea forward experiment (changes results -> updated)
967      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
968    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
969       computations; for SEAICE_VECTORIZE_LSR
970      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
971        sweep to the outside,
972      - remove store directives and add "CADJ loop sequential" directives
973        in analogy to model/src/solve_tridiagonal.F
974      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
975        boundaries to yield more readable code. This has also the charming side
976        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
977        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
978        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
979        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
980        an additional option)
981       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
982       but the adjoint gradients (which are affected by this change) still explode.
983    o coupler (atm & ocn _compon_interf):
984      - avoid using Exch2 IO mapping if not suitable.
985    
986    checkpoint65m (2015/06/15)
987    o pkg/layers:
988      - clean-up old parameters setting (from Sep 2012):
989        + remove old parameters setting from common block (declared locally);
990        + stop if any old parameter is mixed with new parameters;
991        + check for valid or consistent parameter setting (e.g., layers_name)
992      - check that layers_bounds for Pot.Density are in the right range;
993        this is supposed to catch un-updated setting after recently shifting
994        potential density field "prho" by -1000 (now in "sigma" scale).
995    o pkg/layers:
996      - Added missing call to layers_fill for keeping track of tottend in
997        pkg/diagnostics/diagnostics_fill_state.F
998    o pkg/layers:
999      - added CPP flux LAYERS_FINEGRID_DIAPYCNAL to disable fine-grid binning
1000        of diapycnal fluxes
1001    o pkg/layers:
1002      - reverted changes to interpolation to previous treatment; there
1003        was never actually a problem
1004    o pkg/layers:
1005      - fix interpolation of layers tracers in the presence of partial cells
1006      - add lots of new functionality to compute water mass transformation
1007        (enabled by CPP flag LAYERS_THERMODYNAMICS)
1008      - add new calls from main code (diags_oceanic_surf_flux.F,
1009        thermodynamics.F, impldiff.F) and gad to save the necessary fields
1010        for layers_thermodynamics calculations
1011    o pkg/ptracers:
1012      - add capability of stepping a passive tracer forward without advection
1013        by setting PTRACERS_advScheme to 0.
1014    o pkg/diagnostics:
1015      - add few (threads) _BARRIER around any update of "diag_pkgStatus".
1016    o pkg/layers:
1017      - shift potential density field "prho" by -1000 for density layer averaging so
1018        that it corresponds to usual "sigma" definition (i.e., rho(p=const)-1000);
1019        Note that density bin boundaries (layers_bounds in data.layers) have
1020        to be set accordingly (i.e., shifted, in sigma scale).
1021    o pkg/layers:
1022      - fix snap-shot output of layer thickness @ V.pt and output of pot.density
1023      - fix calculation of layer non-weighted velocity and layer probability
1024      - add diagnostics for pot.density used for layer averaging
1025    o pkg/seaice:
1026      - seaice_calc_viscosity.F: change computation of deltaC**2 to ensure
1027        positiveness, modify a few comments and improve variable names,
1028      - the changed computation of deltaC affects most seaice-related
1029        experiments at the truncation level.
1030        seaice_itd.thermo is affected by far the most, with
1031        only 7 digits of agreement remaining; update experiments.
1032    
1033    checkpoint65l (2015/05/04)
1034    o pkg/shelfice:
1035      - in shelfice_thermodynamics.F, if SHELFICEBoundaryLayer=.true., then set
1036        factor drKp1 to zero where it is negative (ie. do not use
1037        SHELFICEBoundaryLayer if hFacC>1)
1038      - the same for factor drLoc in shelfice_forcing.F
1039    o tools/genmake2: move FEXTRAFLAGS from FFLAGS to FOPTIM to avoid a problem
1040        with modules in ptracers, when using testreport option "-small_f"
1041    o pkg/seaice/seaice_growth.F (in case of SEAICE_ITD)
1042      - replace tmpscal1**1.36 by faster exp(1.36*log(tmpscal1))
1043    o verification/testreport
1044      - add new option -small_f
1045        with this option testreport first makes the target small_f (*.f files)
1046        before running make (all). This is useful for explicit inlining when
1047        all sources need to be full available.
1048    o pkg/exf/exf_interp.F:
1049        remove previous changes related to reverse (decreasing) input grids latitude
1050    
1051    checkpoint65k (2015/04/01)
1052    o pkg/ecco:
1053        fix missing cosphi initialization; use eccoiter in place of optimcycle;
1054        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
1055        instead of active read/write
1056    o pkg/ctrl:
1057        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
1058        instead of active read/write.
1059    o pkg/autodiff: make autodiff_readparms.F and autodiff_whtapeio_sync.F
1060        return if .NOT.useAUTODIFF
1061    o pkg/seaice: add CPP brackets (cost function related).
1062    o model/src:
1063        add useAUTODIFF run time switch.
1064    o pkg/exf/exf_interp.F:
1065        add code to allow input grids with latitude starting in the north (i.e. when
1066        j=1 corresponds to northern edge of field); modify global_with_exf to test
1067        this feature.
1068    o verification/testreport:
1069      - replace "grep -A3" with POSIX conformal sed command, because there are
1070        implementations of grep that cannot do contextual searches
1071      - replace "cat -n" by "nl" (two occurrences), because not all implementations
1072        of "cat" have the option "-n"
1073    o model/src:
1074        add new file gsw_teos10.F that contains 3 functions, more or less a copy
1075        of the gsw_toolbox.f90 of the TEOS-10 fortran interface, that are used to
1076        convert from conservative to potential temperature. For now they are not
1077        called anywhere.
1078    o pkg/ggl90: make "useIDEMIX" useful
1079      - re-organize code in s/r ggl90_calc a little to move computations that
1080        are different for idemix into separate loops (changes verification
1081        experiment idemix at truncation level, 12 digits remain -> updated)
1082      - requires 2 new 2D fields KappaM, verticalShear
1083      - make hFacI and recip_hFacI local 3D variables that are passed to
1084        s/r ggl90_idemix
1085      - fix and improve some comments
1086    
1087    checkpoint65j (2015/02/25)
1088    o pkg/openad
1089      - synchronize seawater.F with version in model/src: replace routine
1090        body of sw_temp by calling sw_ptmp and fix/add a few comments.
1091    o pkg/mnc:
1092      - change default value of pickup_read/write_mnc params to FALSE
1093        (since few features are missing in reading MNC pickup files).
1094    o model/src:
1095      - change default (background) vertical diffusivity for salt to be the
1096        temperature (background) vertical diffusivity.
1097      - change background vertical diffusivity in vertical mixing pkgs ggl90,
1098        kl10, my82 and pp81 from temperature diffusivity to salinity diffusivity.
1099        This makes ptracers default diffusivity (that uses salt diffKr) more
1100        consistent with vertical mixing schemes.
1101    o verification/testreport:
1102      - fix typo in "-pcls" option ;
1103      - put temp files in /tmp (instead of in local dir)
1104      - add option "-ncad" to use genmake2 new option "-nocat4ad"
1105      - allow to use "-j" option (for multi-procs make) for AD, OAD and TLM.
1106    o pkg/ggl90 (idemix code):
1107      - apply few fixes ; add some missing "_d 0" ; update output of exp.
1108        global_ocean.90x40x15.idemix
1109    o OpenAD
1110      - enable active file I/O and begin removal of work-around code
1111        for OpenAD for handling control variables (memory vs. active files)
1112      - new CPP options file OPENAD_OPTIONS.h
1113      - revert to genarr2d gradient check for hs94.1x64x5
1114      - (genarr3d tested by tutorial_global_oce_biogeo, tutorial_tracer_adjsens)
1115      - gentim2d works for halfpipe_streamice but not yet hs94.1x64x5
1116    o tools/genmake2:
1117      - add option for an alternative Makefile (from Martin) where multiple
1118        source files are sent to TAF (instead of all in one file).
1119    o pkg/ggl90: add IDEMIX (Olbers and Eden, 2013)
1120      - code provided by Carsten Eden as an extension of ggl90
1121      - so far the code is turned on within ggl90 by setting a CPP-flag at
1122        compile time; a runtime flag implementation is not yet complete
1123      - tested in new verification experiment global_ocean.90x40x15.idemix
1124    o verification:
1125      - reduce length of the AD test run by half for experiments
1126        global_ocean.cs32x15 (std + thsice) and isomip
1127      - enable active file I/O for OpenAD, adjust verifications accordingly
1128      - halfpipe_streamice: change gradient check from genarr2d to gentim2d
1129    o verification/testreport:
1130      - fix two non-POSIX sed statements so that there are no error messages
1131        on Mac OS X
1132      - replace hostname -s with hostname | sed 's/\..*$//'
1133    o model/src/seawater.F:
1134      - simplify SW_TEMP to just calling SW_PTMP with P and PR exchanged
1135        (following the matlab code), which would have avoided the bug caught
1136        by Matt (see below) in the first place
1137    o pkg/shelfice:
1138      - implement alternative discretisation of quadratic drag (selectBotDragQuadr)
1139        and true distance in no-slip BC (bottomVisc_pCell) similar to bottom-drag.
1140      - fix sign of friction tendency (no-slip BC) and fix u,v drag for thin
1141        ice-shelf case (i.e., within surface level).
1142      - add config summary in shelfice_check.F
1143      - remove global variable recip_SHELFICElatentHeat and replace by a local
1144        variable recip_latentHeat
1145      - introduce diagnostics for friction velocity uStar (in case of
1146        SHELFICEuseGammaFrict)
1147      - change verification experiment isomip.htd:
1148        + start from pickup (as input_ad at nIter0=8640)
1149        + start from SHELFICEmassFile instead of SHELFICEloadAnomaly file
1150        + test SHELFICEuseGammaFrict = .TRUE.
1151        + test SHELFICEadvDiffHeatFlux = .TRUE.
1152    o model/src:
1153      - fix bug (Thanks to Matt) in function SW_TEMP (to convert Pot.Temp to
1154        in-situ Temp) and in routine SW_TEMP (in pkg/openad);
1155        update output of experiments global_with_exf.yearly and isomip (all 6).
1156    o pkg/shelfice:
1157      - change setting of kTopC to also be zero where there is no ice-shelf.
1158      - zero out surface forcing arrays (for now, for T & S + EmPmR) where
1159        ice-shelf is.
1160      - first attempt to get RealFreshWaterFlux effects: for now, only without
1161        SHELFICEboundaryLayer ; not consistent if using synchronous time-stepping.
1162    o pkg/seaice: add the option to prescribe a fixed thickness PDF
1163      for thermodynamic calculations
1164      - because of divisions of the type 7/7 not exactly equal to 1, this change
1165        affects results of some verification experiments by up to 4 digits:
1166        global_ocean.cs32x15.seaice, lab_sea, lab_sea.fd, lab_sea.salt_plume,
1167        seaice_obcs, seaice_obcs.seaiceSponge, seaice_obcs.tides
1168        adjoint: lab_sea, lab_sea.noseaicedyn
1169        -> updated
1170    
1171    checkpoint65i (2015/01/23)
1172    o model/src:
1173      - change units of frictionHeating field from W to W/m^2
1174      - fix bug in frictional heating from stratospheric drag in
1175        S/R ATM_PHYS_TENDENCY_APPLY_V
1176      - with synchronous time-stepping: move resetting to zero of frictionHeating
1177        field from load_fields_driver.F to thermodynamics.F ;
1178      - add diagnostics for frictional heating.
1179    o model/src & gmredi K3D:
1180      - add frictionHeating field to pickup-files (for synchronous time-stepping)
1181      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
1182      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
1183        and name in pickup file).
1184      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
1185    o model/src:
1186      - move (from ini_forcing.F) initialisation of all arrays in header file
1187        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
1188        (since Nov 2012) with option selectAddFluid=1.
1189    o pkg/shelfice:
1190      - change units (+ document) of newly added field "shelfIceMassDynTendency"
1191      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
1192    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
1193    o pkg/seaice: two new runtime parameters:
1194      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
1195        long overdue
1196      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
1197        parameterization of tensil stress for fast ice (does not do anything yet)
1198    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
1199        for LSR: move checking overlaps out of JFNK-if-block
1200    o pkg/atm_phys:
1201      - move copy of grid and dynamical fields out of atm_phys_driver.F into
1202        new S/R ATM_PHYS_DYN2PHYS.
1203      - fix level height for Linear Free-Surf case (to be consistent with
1204        fixed-in-time pressure levels).
1205    o pkg/mom_common (bottomdrag):
1206      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
1207        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
1208        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
1209    o pkg/shelfice (u/v_drag):
1210      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
1211      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
1212        (now similar to shelfice_u_drag.F)
1213      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
1214        from mom_vecinv.F (similar to mom_fluxform calls).
1215    o pkg/mom_common (bottomdrag):
1216      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
1217      - add options for alternative discretisation of velocity norm in quadratic
1218        bottom drag: averaging of grid-cell-center KE to U.point and V.point
1219        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
1220        improves when averaging only the other component (e.g. vVel for U bottom
1221        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
1222      - add options (bottomVisc_pCell) to account for partial-cell in bottom
1223        friction (no-slip BC) thus getting the true distance from the bottom;
1224        off by default since this also reduces model stability (explicit bottom
1225        friction). Changes produce different machine truncation with linear-drag
1226        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
1227        front_relax (bvp & mxl, 10 & 11 digits).
1228    o model/src & mom pkgs:
1229      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
1230        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
1231      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
1232        just copy level Nr value to level Nr+1.
1233    o doc:
1234      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
1235    o pkg/shelfice:
1236      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
1237        SHELFICE.h: move array shelficemass to init_varia, initialise
1238        from array shelficemassinit, which is set in init_fixed and
1239        has option to be set from file; introduce array
1240        shelficeMassDynTend array, set thru file in init_fixed
1241      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
1242        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
1243        pkg/streamice
1244      - shelfice_thermodynamics.F: call shelfice_step_icemass if
1245        SHELFICEMassStepping = .true.
1246      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
1247    
1248    checkpoint65h (2014/12/17)
1249    o verification/global_ocean.90x40x15, global_ocean_ebm:
1250      - update to generic controls.
1251    o pkg/ctrl:
1252      - ctrl_map_ini_genarr.F: test for igen>0
1253      - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
1254      - move gentim2d part of ctrl_map_ini_genarr.F to
1255        new separate routine : ctrl_map_ini_gentim2d.F
1256      - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
1257        add time variable weights and cyclic controls (time mean,
1258        seasonal cycle, etc) capabilities to gentim2d
1259    o pkg/ecco:
1260      - move reading of error, conversion to weights from
1261        ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
1262    o global_oce_llc90, cs32:
1263      - activte sbo.
1264      - CTRL_SIZE.h : add maxCtrlProc.
1265      - activate the new genctrl capabilities.
1266      - update following reorganization of global_oce_input_fields.tar.gz  
1267    o pkg/ctrl/ctrl_ad_diff.list:
1268      - add missing ctrl_init_rec.f
1269    o tools/OAD_support/keepOriginal:
1270      - add ctrl_init_rec.F
1271    o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
1272      - avoid recomputations of xx_gentim2d_dummy.
1273    o momentum diagnostics:
1274      - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
1275        mom_vecinv.F to timestep.F (to include Smag-3D contribution).
1276    o pkg/seaice/seaice_lsr.F:
1277      - fix computation of BU/BV, make sure they are non-zero, only necessary
1278        for cubed sphere exchanges and SEAICE_OLx/y>0.
1279        This makes calling s/r fill_cs_corner_rl obsolete (removed).
1280    o verification/global_ocean.cs32x15/input.seaice
1281      - add test for strong implicit coupling and restricted addtive Schwarz
1282        methods for LSR
1283      - update results/output.seaice.txt
1284    o verification/tutorial_global_oce_biogeo:
1285      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
1286        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
1287        update output_adm,_oadm,_tlm.txt
1288    o pkg/dic:
1289      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
1290      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
1291        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
1292    o verification/tutorial_global_oce_biogeo:
1293      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
1294        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
1295        update output_adm,_oadm,_tlm.txt
1296    o eesupp/src:
1297      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
1298        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
1299    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
1300      LSR (following Hutchings et al. 2004)
1301      - introduce zetaZ as a global variable (requires adjustments in
1302        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
1303        in seaice_calc_viscosities.F
1304      - new flag SEAICEuseStrImpCpl (default off)
1305      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
1306        momentum equations
1307      - JFNK-solver (preconditioner) adjusted to allow using this method
1308        (where it does not have any positive effect)
1309    o pkg/seaice
1310      - add overlap for restrictive additive Schwartz method also to LSR, but
1311        turn it off by default (because it only seems to work for non-cubed
1312        sphere/llc topologies)
1313    o pkg/autodiff
1314      - add extra exchanges in addummy_in_steppging also for mnc output
1315    o pkg/seaice:
1316      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
1317        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
1318    o pkg/obcs:
1319      - add option to specify domain-connected piece Id along OB though files
1320        (for now, only used to diagnose PhiVel; default =1 -> global correction)
1321      - modify obcs_diag_balance.F to process each connected-part separately;
1322        exclude OB where Id = 0 but keep the full divergence there (-> constant
1323        Psi along this portion of OB and all inflow derived from grad(Phi))
1324      - add example of OB-conect files in verification/so_box_biogeo/input.
1325    o pkg/diagnostics:
1326      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
1327      a) use non zero matrix element across OB and solve for Phi 1 grid point
1328         outside OB (i.e, where tracer OBCS are applied).
1329      b) global imbalance of inFlow/outFlow across OB: instead of modifying
1330         velocity across OB, spread it uniformly along the OB in the RHS.
1331    
1332    checkpoint65g (2014/11/19)
1333    o pkg/diagnostcis:
1334      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
1335    o pkg/my82,pp81,kl10:
1336      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
1337        field diffKr as background diffusivity to set minimum diffusivity value.
1338    o pkg/seaice:
1339      - add new parameter SEAICEuseEVPrev (for revisited EVP by
1340        Bouillon et al 2013)
1341      - add SEAICE_evpAlpha/Beta to namelist
1342      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
1343        involve trivial re-ordering of divisions/multiplications that should not
1344        have any effects, but ... they do change the results of lab_sea.hb87 so
1345        that only 2 digits of agreement remain, in line with the general
1346        instability/fragility of the evp-code. For now, I do not care and just
1347        update the verification experiment
1348    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
1349      - remove xx_genarr2d_numsmooth etc
1350      - use xx_genarr2d_preproc etc instead
1351      - carry out smooth_correl2D at initialization stage rather than during
1352        time stepping.
1353      - get smoothOpNb from xx_gentim2d_preproc
1354    o global_oce_cs32 :
1355      - add test of generic ecco capabilities.
1356    o pkg/exf/exf_getsurfacefluxes.F :
1357      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
1358    o pkg/ctrl,ecco :
1359      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
1360        is defined.
1361    o pkg/seaice: add diagnostics for Delta (deformation parameter)
1362    o model/src:
1363      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
1364        diffusivity (background) is specified but ignored.
1365    o verification:
1366      - in testreport, convert hostname to lower case for default output dir name
1367    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
1368    o pkg/dic: add modifications from Hajoon:
1369      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
1370      - light attenuation: add self-shading effect by climatological Chlorophyll
1371        (read from file).
1372    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
1373        compiles when SEAICE_ALLOW_DYNAMICS is undefined
1374    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
1375        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
1376        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
1377        approach where CPP_OPTIONS.h includes an omnipotent
1378        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
1379    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
1380        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
1381    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
1382        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
1383        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
1384    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
1385      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
1386      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
1387      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
1388      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
1389    o pkg/ctrl,ecco,exf :
1390      - remove variables associated with NON-generic costs,
1391        unless ECCO_CTRL_DEPRECATED is defined.
1392      - remove NON-generic NON-obcs controls,
1393        unless ECCO_CTRL_DEPRECATED is defined.
1394    o pkg/ctrl : added ctrl_local_params.h
1395    o pkg/ecco : added ecco_local_params.h
1396    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
1397        experiments, which will progressively be removed once the
1398        experiments are revised to use only generic controls/costs.
1399    
1400    checkpoint65f (2014/10/13)
1401    o pkg/ctrl, ecco, seaice : minor changes in headers
1402    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
1403        cost function and control capabilities added since checkpoint65c.
1404    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
1405    o pkg/ecco: increase modularity and improve logic
1406      - ecco_toolbox.F (new) : basic operations that are often used,
1407        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
1408        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
1409      - cost_gencal.F (new) : determine filnames and records.
1410      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
1411      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
1412        and exploit the above functions leading to more compact code.
1413      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
1414      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
1415        using_ers, using_gfo, using_mdt is now only defined within gencost)
1416    o pkg/ecco: extend generic cost capabilities
1417      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
1418        capabilities via gencost_preproc (+ _c,_i,_r related params),
1419        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
1420        gencost_outputlevel arguments to cost_generic
1421      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
1422        and active_read, making room for gencost_preproc to take effect.
1423        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
1424      - pkg/ecco/cost_generic.F :
1425        compute and store misfit maks*(model-data) in localdif that is
1426        then used in cost and for output, output misfit if outlev.GT.0
1427      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
1428        rather gencost_barfile for deciding whether to write barfile
1429      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
1430      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
1431        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
1432      - pkg/ecco/ecco_summary.F : report gencost variables
1433      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
1434    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
1435    o pkg/ecco: internal re-organization
1436      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
1437        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
1438        mv relevant variables definition from ecco_cost.h to ecco.h,
1439        make sure gencost routines only include ecco.h)
1440      - throughout : add missing CCP switches, rm unused variables,
1441        and rm un-necessary CPP switches
1442      - throughout gencost routines : replace modelstartdate with
1443        gencost_startdate when needed
1444      - cost_bp_read.F : use arguments, instead of common blocs
1445        so that it can be used also by (new) cost_gencost_bpv4.F
1446      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
1447      - ecco_phys.F : compute etanFull
1448      - ecco_readparms.F : rename using_topex as using_tpj, add
1449        bpv4-grace to gencost list, initialize added parameters
1450      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
1451    
1452    checkpoint65e (2014/09/28)
1453    o pkg/obcs:
1454      - replaced the just-added CPP options with run-time variables
1455        (see pkg/obcs/OBCS_PARAMS.h for details)
1456    o pkg/obcs:
1457      - add additional CPP options for sponge boundary layers
1458        (see pkg/obcs/OBCS_OPTIONS.h for details)
1459    o pkg/atm_phys:
1460      - implement simple (obliquity only, assuming circular planet orbit)
1461        seasonal cycle for incoming insolation ; used when run-time parameter
1462        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
1463    o pkg/exf, pkg/ecco, pkg/ctrl:
1464      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
1465      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
1466      - implement gentim2d for xx_tauu, xx_tauv
1467    o pkg/ctrl, pkg/ecco :
1468      - fix and complement the generic controls implementation
1469    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
1470        pkg/shelfice/shelfice_thermodynamics.F,
1471        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
1472        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
1473      - add weight in CTRL_GET_GEN calls
1474    o pkg/ctrl :
1475      - ctrl_get_gen.F : add weight as input parameter, and apply
1476        it directly rather than using smooth_correl2Dw (to be retired).
1477      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
1478    o pkg/ctrl :
1479      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
1480        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
1481      - re-activate ctrl_summary (call in ctrl_init.F)
1482    o pkg/ctrl/ctrl_cost_gen.F :
1483      - fix CCP brackets, remove un-necessary myiter, mytime
1484    o pkg/ecco, pkg/ctrl :
1485      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
1486      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
1487      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
1488      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
1489    
1490    checkpoint65d (2014/09/15)
1491    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
1492      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
1493        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
1494    o pkg/ctrl/ctrl_map_ini_genarr.F :
1495      - remove compilation failure
1496      - replace hard coded example
1497      - use ctrl_map_ini_gen2D, 3D
1498    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
1499      - on/off switch based upon xx_genarr2d_weight,3d
1500    o src/packages_init_variables.F :
1501      - regroup pkg/estimation calls
1502      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
1503        (moved to ctrl_init_variables)
1504    o cost/cost_init_varia.F :
1505      - remove ecco_cost_init_varia
1506        (moved to ecco_init_varia)
1507    o ctrl/ctrl_init_variables.F :
1508      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
1509      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
1510    o ctrl/ctrl_map_ini.F :
1511      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
1512        (moved to ctrl_init_variables)
1513    o ctrl/ctrl_map_ini_ecco.F :
1514      - remove ECCO_PHYS (mv to ecco_init_varia)
1515      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
1516    o ecco/ecco_ad_diff.list :
1517      - add ecco_init_varia.f
1518    o ecco/ecco_init_varia.F
1519      - new routine
1520    o pkg/streamice:
1521      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
1522        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
1523      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
1524    o pkg/generic_advdiff:
1525      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
1526    o pkg/exf:
1527      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
1528         xxg_precip capability
1529      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
1530    o pkg/ctrl:
1531      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
1532    o model/src/load_fields_driver.F :
1533      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
1534        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
1535    o OpenAD verification experiments:
1536      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
1537        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
1538        for now, only in pkgs used in OpenAD verification experiments.
1539      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
1540        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
1541        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
1542        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
1543    o OpenAD verification tests:
1544      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
1545      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
1546        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
1547      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
1548        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
1549    o model/src & generic_advdiff:
1550      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
1551        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
1552        dynamics requires valid tracer forcing only over tile interior but, for
1553        some diagnostics, may need to extend it over 1 point in tile halo region.
1554      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
1555        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
1556        setting in temp/salt/ptracer_integrate.F
1557    o pkg/dic:
1558      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
1559        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
1560        in gchem_forcing_sep.F
1561    o pkg/autodiff & obcs:
1562      - add storage of current OB values for U & V (was already done for T & S).
1563    
1564    checkpoint65c (2014/08/30)
1565    o pkg/dic:
1566      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
1567        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
1568        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
1569    o verification:
1570      - new experiment testing OBCS and DIC pkgs, using params & output from
1571        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
1572        passage: take OBCS from the last year of a 2 yrs simulation and initial
1573        conditions from t=1.yr while keeping the same forcing.
1574    o model/src:
1575      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
1576        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
1577    o pkg/diagnostics (Stats-Diags):
1578      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
1579        a) refine region where stats are computed, excluding where arrhFac=0 ;
1580        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
1581        c) extend regional stats over the region edges (for U or V pt location).
1582    o pkg/gchem:
1583      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
1584        pkg/dic is currently changing/updating ptracers values beyond the OB).
1585    o verification (hs94):
1586      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
1587        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
1588        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
1589        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
1590    o pkg/ptracers:
1591      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
1592        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
1593      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
1594        with AB-2 code (so that it get tested).
1595    o model/src:
1596      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
1597        with AB-2 code (previously only available with AB-3 code).
1598        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
1599        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
1600        there, by calling CYCLE_AB_TRACER).
1601    o pkg/generic_advdiff:
1602      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
1603        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
1604        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
1605        S/R temp/salt/ptracers_integrate.F
1606    o model/src & pkg/ptracers:
1607      - remove common block variables gT,gS (in DYNVARS.h), except when
1608         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
1609      - remove common block variable gPtr.
1610    o model/src & pkgs:
1611      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
1612         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
1613         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
1614         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
1615      + change accordingly all calling S/R.
1616      - use local temperature/salinity/ptracer tendency array (without bi,bj)
1617        in S/R temp/salt/ptracers_integrate.F
1618    o pkg/seaice:
1619      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
1620        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
1621      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
1622        in seaice_lsr
1623      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
1624        in s/r seaice_lsr_calc_coeffs
1625    o pkg/mdsio:
1626      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
1627        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
1628        too long (e.g., > MAX_LEN_FNAM/2 )
1629    
1630    checkpoint65b (2014/08/12)
1631    o pkg/matrix:
1632      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
1633    o model/src:
1634      - fix initialisation of geothermalFile; compile geothermal-flux code in
1635        natl_box verification experiment.
1636    o model/src & pkg/down_slope:
1637      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
1638      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
1639        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
1640        results at machine truncation level: update output of experiments
1641        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
1642    o pkg/diagnostics (Stats-Diags):
1643      - do not cumulate the full volume when DIAGNOSTICS_FILL is
1644        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
1645        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
1646        times (but Min,Max and StD are still wrong).
1647    o model/src:
1648      - add geothermal flux forcing: read in ini_forcing.F as time-constant
1649        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
1650    o model/src:
1651      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
1652        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
1653        arrays are already updated while adjustments (filters, conv.adjustment) are
1654        still applied later, in S/R TRACERS_CORRECTION_STEP.
1655    o model/src:
1656      - store in common bloc array "rhoInSitu" the virtual potential temperature
1657        anomaly that is used to compute geopotential: this make the atmos code
1658        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
1659    o pkg/seaice/seaice_lsr.F
1660      - rename integer variable ilcall to ipass (that's what it is called
1661        in the residual diagnostics
1662      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
1663        default) for improved non-linear convergence of the first few steps
1664      - adjust a few comments and add new ones to explain some of the store
1665        directives
1666    o pkg/generic_advdiff (& ptracers):
1667      - re-work the code to check for valid advection scheme and for minimum
1668        size of overlap (now stored in local common bloc in gad_advscheme.F)
1669    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
1670      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
1671      - add an auxilliary variable "bet" and fix store directives and keys in
1672        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
1673        less exact gradients in my tests); but there are still
1674        recomputation warning (although gradients are sort of OK), when
1675        SEAICE_LSR_VECTORIZE is not defined, so this flag and
1676        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
1677      - update verification experiments lab_sea.
1678      - change some comments in S/R seaice_calc_viscosities
1679    o model/src:
1680      - if staggerTimeStep=T, always apply exchange to velocity field in
1681        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
1682        (independent of using multi-dim advection or not); no effect on FWD run
1683        but affects AD results (at machine truncation level): update output of
1684        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
1685        and isomip (oad: 12.d).
1686    o pkg/generic_advdiff:
1687      - stop if doAB_onGtGs is set to FALSE but ignored
1688      - refine warning related to stability of tracer time-stepping
1689        regarding internal wave dynamics.
1690      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
1691        on staggerTimeStep & implicitIntGravWave (will now get a warning
1692        if potentially unstable).
1693    o pkg/kl10:
1694      - add new pkg "kl10" for mixing due to internal wave breaking, from
1695        http://www.sciencedirect.com/science/article/pii/S1463500310000144
1696        (contribution from Jody Klymak), tested in verification experiment
1697        verification/internal_wave/input.kl10/
1698    o isomip experiment:
1699      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
1700        (input.htd) and update the output.
1701    o cd_code experiments:
1702      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
1703        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
1704        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
1705        update the corresponding output.
1706    o pkg/seaice:
1707      - reduce the number of include files and store directives in
1708        S/R seaice_lsr_tridiagu/v
1709      - change the order of loops in one case in S/R seaice_lsr_tridiagv
1710        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
1711        get rid off one store directive (a TAF bug?)
1712      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
1713        S/R seaice_lsr_tridiagv to change the loop range for consistency
1714      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
1715      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
1716        S/R seaice_lsr_tridiagu/v (requires update of
1717        offline_exf_seaice/input.dyn_jfnk)
1718    
1719    checkpoint65a (2014/07/27)
1720    o model/src:
1721      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
1722        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
1723        (topo in p-coords, ice-shelf in z-coords); update output of experiments
1724        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
1725    o model/src:
1726      - collect momentum forcing tendency into local 2-D array (passed as argument
1727        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
1728        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
1729        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
1730      - collect T & S forcing tendency into local 2-D array (passed as argument to
1731        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
1732        affects results at machine truncation level (e.g., ocean: if using
1733        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
1734        correction due to vertical advection).
1735      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
1736        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
1737        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
1738        obcs_ctrl (ad & fwd grd @ 12 & 7).
1739    o pkg/ptracers & diagnostics:
1740      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
1741        title (to avoid some unexpected truncation); sort out ptracers diags units.
1742      - collect ptracer forcing tendency into local 2-D array (passed as argument
1743        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
1744    
1745    checkpoint65 (2014/07/18)
1746    o pkg/fizhi:
1747      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
1748        affects results at machine truncation level. Update output of experiments
1749        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
1750    o pkg/seaice: more clean up
1751      - rename TAF common block tapes to be more consistent and remove
1752        unnecessary duplicates
1753      - add store directives to remove more recomputations, but use smaller
1754        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
1755        The idea behind this flag is to reduce the memory footprint when the
1756        adjoint of the LSR is not required. As of now, defining the flag
1757        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
1758        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
1759        For experiment offline_exf_seaice, this means on a linux box with gfortran
1760        nearly a factor of 10 (but keep in mind there is mostly seaice code in
1761        this experiment):
1762        > size mitgcmuv_ad
1763        text    data        bss     dec        hex
1764        5100659 1216  220458952  225560827  d71c8fb
1765        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
1766        but only a moderate increase of 36% for global_ocean.cs32x15:
1767        text    data        bss     dec        hex
1768        6695027 1648 1014578664 1021275339 3cdf6ccb
1769        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
1770      - note: there are still recomputations in global_ocean.cs32x15 and
1771        offline_exf_seaice and the gradient agreement changes (gets a
1772        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
1773      - in general, the AD gradients still are wrong
1774    o OpenAD
1775      - clean up code_oad/ directories somewhat by moving files
1776        dontCompile, dontTransform, keepOriginal to OAD_support/
1777    o model/src:
1778      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
1779        (not currently tested): add dissipation terms before NLFS rescaling of
1780        tendencies (previously done after).
1781    o pkg/diagnostics:
1782      - write stats-diags in ascii file with more digits (same as in monitor).
1783    o pkg/down_slope:
1784      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
1785        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
1786    o model/src:
1787      - new file "apply_forcing.F" containing all the code previously in
1788        external_forcing.F, but with new argument list: pass, as new argument,
1789        the current level tendency array to update (instead of a direct update
1790        of the common bloc array). Change the corresponding calls.
1791      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
1792        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
1793    o pkg/seaice/seaice_lsr, a little bit of clean up
1794      - rearrange some code blocks, so that now all calculations for
1795        setting up the right-hand-sides done within one single block
1796        (I find that easier to read and understand)
1797      - rearrange freedrift-code to reduce the number of ifdefs
1798      - adjust some indentations and comments
1799    
1800    checkpoint64z (2014/07/10)
1801    o model/src and several pkgs:
1802      - change argument list of all S/R called from external_forcing.F and
1803        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
1804        to pass, as argument, the current level tendency array to update
1805        (instead of a direct update of the common bloc array).
1806      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
1807      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
1808    o pkg/seaice/seaice_lsr.F
1809      - always initialize local arrays in seaice_lsr_tridiagu/v
1810      - add more local tapes to seaice_lsr_tridiagu/v
1811      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
1812        keep it in bi/bj loop; this seems to be essential
1813      - gradients are still wrong but only by 4-7 orders of magnitude
1814        instead of 15 orders of magnitude, lab_sea improves a little
1815    o pkg/seaice
1816      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
1817        generates unnecessary code in seaice_lsr_ad
1818      - add more store directives in seaice_lsr to avoid unnecessary code
1819        in seaice_lsr_ad
1820      - exclude some residual computations in seaice_lsr when
1821        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
1822        in seaice_lsr_ad
1823      - add more storing, a new tape (model/src/the_main_loop.F) and
1824        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
1825        and klockey should be checked by a specialist)
1826      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
1827        and update lab_sea after previous changes in pkg/seaice below
1828    o pkg/autodiff:
1829      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
1830        viscFacInAd : run time parameters allowing for adjoint switches
1831        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
1832    o pkg/ecco:
1833      - introduce cost_gencost_boxmean.F that computes a box mean
1834        temperature (for use in adjoint sensitivity studies).
1835    o model/src/set_defaults.F : initialize viscFacAdj to 1.
1836    o pkg/mom_common/mom_calc_visc.F:
1837      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
1838    o pkg/seaice/seaice_summary.F:
1839      - statement for SEAICEadjMODE now in autodiff_readparms.F
1840    o pkg/seaice:
1841      - remove some store directives and add new ones in an effort to get
1842        finally rid off the recomputation warnings. This is successful
1843        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
1844        defined (i.e. no extensive recomputation warnings left), but there
1845        are still too many recomputations on the solver iteration level
1846      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
1847      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
1848        SEAICE_SIZE.h
1849      - add a store directive in S/R seaice_calc_viscosities
1850    o pkg/seaice (ITD code):
1851      - fix definition of Hlimit for multi-threaded case
1852      - use double precision arithmetic to compute Hlimit: this affects results;
1853        update output of experiment seaice_itd.
1854    o replace content of verification/seaice_itd
1855      - instead of a 1D column use the configuration of offline_exf_seaice
1856        to test the ice thickness distribution code with ridging
1857      - this is a first shot at this experiment
1858      - change of some defaults of ridging parameters SEAICEhStar (from
1859        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
1860        and lot of new comments.
1861    
1862    checkpoint64y (2014/06/20)
1863    o pkg/seaice/seaice_reg_ridge.F:
1864      - modify the regularization of very small volumes of ice; only check
1865        total volume HEFF, and do not apply correction to individual ice
1866        classes because that leads to funny patterns in the heat and fw-fluxes
1867        into the ocean. Adjust seaice_itd/results/output.txt
1868      - replace nITD by SEAICE_multDim in loop-ranges
1869    o pkg/exf:
1870      - add code to process the case field period = -12. with UV interpolation.
1871      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
1872        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
1873    o verification/global_with_exf:
1874      - switch all fields period to -12. (was previously untested) in input/data.exf
1875        (but keep secondary test ".yearly" unchanged); update the reference output.
1876    o pkg/cal:
1877      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
1878    o pkg/exf:
1879      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
1880        to replace logical switch "exf_verbose"
1881      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
1882    o pkg/sbo:
1883      - update from Katherine Quinn: evaluate mass directly from density and SSH
1884        (budget using Finite Volume method) instead of from bottom pressure.
1885      - allow testreport to collect few selected SBO output ; tested in exp.
1886        global_ocean.90x40x15 (after updating the results, to include SBO output).
1887      - fix some multi-threading issues (in output part).
1888    o model/src & most packages:
1889      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
1890      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
1891        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
1892        "data.{pkg}" exist ; and leave the S/R (return) just after.
1893      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
1894        + call LAND_READPARMS from packages_readparms.F
1895    o pkg/seaice:
1896      - remove code that resets useThSice in S/R seaice_readparms and
1897        replace it by a warning in S/R seaice_check
1898      - remove parameter MULTDIM, replace with nITD and runtime
1899        parameter SEAICE_multDim (still hard-wired to nITD if
1900        SEAICE_ITD is defined)
1901    
1902    checkpoint64x (2014/05/24)
1903    o verification/lab_sea:
1904      - update adjoint and TLM output following changes to pkg/salt_plume
1905      - un-do the update after putting back local recip_Cp in few places.
1906    o pkg/salt_plume: modifications by An Nguyen:
1907      - add capability to do brine rejection (salt-plume) as function of
1908        volume+tracers (instead of only salinity tracer).
1909      - conserve volume by exchanging volume from each kLev to above to
1910        accommodate in-coming brine volume
1911      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
1912      - switch KPP surf buoyancy due to brine forcing to 3-d
1913        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
1914      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
1915      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
1916        in East/West Arctic.
1917    o pkg/sbo:
1918      - incorporate modifications from Katherine Quinn to enable the use of sbo
1919        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
1920        output for future testreport verification (unfinished).
1921    o pkg/atm_phys:
1922      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
1923        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
1924        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
1925    o pkg/seaice
1926      seaice_calc_ice_strength.F: modify expression to avoid divisions
1927        (affects truncation)
1928      seaice_do_ridging.F: clean up the insectarium
1929      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
1930      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
1931      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
1932      - add some debugging information and error messages (warnings)
1933    o model/src: modifications relatd to atmosphere p*:
1934      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
1935      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
1936        of vertical profile tRef in geopotential background and anomaly.
1937      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
1938        and pkg/atm_phys.
1939      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
1940        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
1941    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
1942    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
1943        not used right now, but can be used in BGC packages to fix conservation.
1944    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
1945        other packages too.
1946    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
1947        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
1948    o model/src:
1949      - since we have several heat capacity (even in model/src), define "recip_Cp"
1950        as local variable (no longer in common block) to avoid any confusion.
1951      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
1952    o pkg/exf:
1953      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
1954        air density as function of air Temp, Humidity and atm pressure.
1955    
1956    checkpoint64w (2014/05/02)
1957    o verification:
1958      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
1959        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
1960        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
1961        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
1962        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
1963    o model/src: for atmosphere in p* coords:
1964      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
1965      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
1966        but not yet activated.
1967    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
1968      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
1969      - this changes the results (but not for any verification experiment, because
1970        none tests this), but avoids having an extra field in the restart files
1971    o pkg/seaice: remove global variable TICE (not needed)
1972      - replace by TICES or local variable where necessary (cost_seaice_test,
1973        seaice_diagnostics_state)
1974      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
1975      - use specific read/write routines for reading and writing individual leves
1976        of a multilevel field
1977    o pkg/ctrl & model/inc:
1978      - move additional anomaly fields of control vars (related to options:
1979         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
1980        from DYNVARS.h into new header file: CTRL_FIELDS.h
1981    o pkg/seaice: some small modifications to the ridging code
1982      - make fw2ObyRidge a global variable and add the freshwater flux to
1983        seaice_growth
1984      - pass actual thickness from seaice_prepare_ridging, so that it is
1985        computed only in one place and compute it in the same way as in
1986        seaice_growth
1987      - initialise more fields in seaice_do_ridging that where cause floating
1988        point exceptions over land
1989    o pkg/seaice: preparations for ridging code and first real ridging code
1990      - move most of "PART 1" of S/R seaice_growth into a new and separate
1991        S/R seaice_reg_ridge that will both regularize the state variable after
1992        advection call the actual ridging routine;
1993      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
1994        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
1995      - remove ridging code from seaice_advdiff
1996      - clean up remaining part 1 of seaice_growth in an attempt to make it
1997        more readable (this is probably subjective)
1998      - call seaice_itd_redist once in the initialisation phase to have the initial
1999        conditions in the correct category
2000      - finally: add new ridging routine for ITD code
2001    
2002    checkpoint64v (2014/04/11)
2003    o pkg/ecco:
2004      - add runtime parameters mdt[start,end]date[1,2]
2005      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
2006    o pkg/seaice:
2007      - make deltaC a global variable, so that it can be used in ridging code
2008      - first step towards ridging: introduce new routines that compute
2009        ice strength based on ridging parameters
2010      - add diagnostic for HSNOWITD
2011      - add opnWtrFrac as a global variable (required for ridging scheme)
2012    o pkg/salt_plume + pkg/seaice/seaice_growth.F
2013      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
2014        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
2015    o verification/hs94.1x64x5:
2016      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
2017      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
2018    o autodiff:
2019      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
2020        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
2021        For now, only in pkgs used in verification/hs94.1x64x5.
2022      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
2023        which are specific to TAF/TAMC).
2024      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
2025        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
2026        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
2027      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
2028        building mitgcmuv_ad (make adAll).
2029    o pkg/ecco:
2030      - cost_gencost_seaicev4.F:
2031         reformulate proxy cost as function of sst and local param SEAICE_freeze
2032         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
2033      - add stop statement if old names siv4-[sst,vol] are used
2034      - add snapshots + cost reports for atmospheric longwave
2035      - remove factor 0.1 in front of wtau[u,v]
2036      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
2037         ALLOW_TMI_SST_COST_CONTRIBUTION
2038    o pkg/atm_phys:
2039      - add some diagnostics for Short-wave and for convection S/R.
2040    o pkg/seaice/seaice_growth:
2041      - fix a bug in the lateral melt parameterization for SEAICE_ITD
2042        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
2043      - rearrange loop order for better vector code in the same code block
2044      - rewrite the floeDiameter formula to have fewer divisions
2045      -  (miraculously) none of this changes the results of seaice_itd
2046    o pkg/smooth:
2047      - move param smooth2Ddiffnbt to pkg/ecco
2048    o pkg/salt_plume:
2049      - salt_plume_frac.F:
2050         clean up local param names
2051         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
2052    o pkg/rw:
2053      - add RS version of S/R READ_MFLDS_LEV.
2054    o pkg/streamice:
2055      - fix the restart test by writing/reading pickup_streamice files.
2056    o pkg/seaice:
2057      - refine checks for jfnk-related parameters
2058      - comment out if statement with SEAICEuseIMEX parameter as long as there
2059        is no IMEX code to avoid confusion and surprises
2060    
2061    checkpoint64u (2014/03/07)
2062    o verification/MLAdjust:
2063      - rename secondary test suffix:
2064         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
2065         0.leithD -> AhFlxF  + switch to flux-form
2066         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
2067         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
2068    o pkg/mom_vecinv:
2069      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
2070        to be before mom_calc_visc.F)
2071      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
2072      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
2073        this is simpler for the adjoint and for diagnostics.
2074    o model/src + pkg/momentum:
2075      - add input files for  2-D additional Western and Southern cell-edge wall
2076         (e.g., to add "thin-wall" where it is =1).
2077      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
2078        using 2nd hFacZ that is computed from initial (fix domain) hFac
2079      - known limitations of thin wall implementation: not yet coded for sigma
2080        coords; not working with CD-scheme neither.
2081    o pkg/seaice:
2082      - rename recently introduced parameters from (wrong name) AB to
2083        BDF (backward difference time discretisation)
2084      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
2085    o tools/adjoint_options:
2086      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
2087    
2088    checkpoint64t (2014/02/01)
2089    o pkg/ecco
2090      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
2091        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
2092      - replace hard-coded record number and period which only work for monthly
2093        with read-in runtime param that works for other periods (month,day,year)
2094    o pkg/thsice
2095      - corrected store directive fixes thsice adjoint gradient checks
2096    o genmake2 & testreport:
2097      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
2098        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
2099        Update testreport accordingly. No need to set "export OPENAD=true"
2100        in adjoint_options/adjoint_oad anymore (will be removed later).
2101    o pkg/shelfice:
2102      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
2103        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
2104        so that surface forcing applies to k=kSurf if using pkg/shelfice.
2105    o pkg/ctrl, pkg/grdchk, pkg/ecco:
2106      - Changes to make GENARR more modular (i.e. invisible if not used)
2107    o model/src/temp_integrate.F and salt_integrate.F
2108      - re-include store directives that were removed on Dec 27th.
2109    o model/src/external_forcing_surf.F
2110      - add storage directives for EmPmR and PmEpR to avoid recomputation of
2111        seaice_model in the adjoint that is problematic when seaice_model is
2112        turned off in the adjoint. The resolved issue dated back to July when
2113        EXTERNAL_FORCING_SURF call was moved.
2114        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
2115    o pkg/exf/exf_check.F
2116      - fix a small bug again (originally found by Wentao Liu, now found again)
2117      - streamline error output
2118    o pkg/streamice and aim_v23:
2119      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
2120        Apple's /usr/bin/cpp knows what to do:
2121        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
2122        Target: x86_64-apple-darwin13.0.0
2123    
2124    checkpoint64s (2014/01/05)
2125    o tools/adjoint_options:
2126      - switch to fastopt.net TAF server (instead of default fastopt.de) for
2127        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
2128    o model/src:
2129      - remove some unnecessary TAF storage directives in forward_step.F and
2130        in dynamics.F (note: not always removed by TAF, e.g., double storage
2131        of kappaRU,kappaRV in former version of dynamics.F).
2132    o model/src & pkg/ptracers:
2133      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
2134        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
2135        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
2136      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
2137      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
2138      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
2139    o useSingleCpuInput separates single-CPU input from single-CPU output;
2140        for now only implemented for in exf_interp_read.F
2141    o verification/advect_xy:
2142      - fix missing EXCH call in local version of ini_salt.F and update output.
2143    o momentum diagnostics:
2144      - fix which deltaT is used in Total-Tendency diagnostics.
2145      - fix typo in diagnostics for momentum tendency from AB.
2146    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
2147        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
2148    
2149    checkpoint64r (2013/12/08)
2150    o verification/*/results:
2151      - Update reference output of experiments that were passing with just 13 digits
2152         (make it easier to detect future changes in results)
2153    o model/src & pkg/ptracers:
2154      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
2155        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
2156        to inside ptracers_integrate.F ; remove ptracers_advection.F
2157    o coupling interface pkgs:
2158        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
2159      - change the config check to test the agreement of Ocean Depth
2160        with ATM land/sea mask (instead of ATM orography);
2161      - send to coupler the number of coupler time-steps to do for this run:
2162        this allows to check for consistency and don't need anymore to be
2163        specified in parameter file "data";
2164      in coupler:
2165      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
2166      - improve report to log-file of config setting (pass log-file unit to few S/R)
2167    o pkg/compon_communic:
2168      - add coupling send/receive for non-tiled integer vector;
2169      - add S/R to check and stop if any proc has an error (similar to
2170        eesupp/src/stop_if_error.F but single thread and across Comm_World).
2171    o pkg/exch2:
2172      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
2173        through list of all tiles my proc owns.
2174    o model/src:
2175      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
2176        from rTrans) to simplify dependencies (no need to store rTrans anymore in
2177        calling S/R); this affects AD results at machine truncation level:
2178        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
2179        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
2180    o tools/build_options:
2181      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
2182    o coupling interface pkgs:
2183        [compon_communic, atm_compon_interf & ocn_compon_interf]
2184      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
2185        to each S/R that needs it; remove un-used variables.
2186      - change component tile registration (cpl_register.F in both compon_interf
2187        and mitcomponent_tile_register.F) to pass the full list of tiles
2188        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
2189      - with pkg/exch2: adopt the same convention used for I/O to define mapping
2190        towards coupler global array (unless W2_useE2ioLayOut=F):
2191         a) can now use different tiling between atm & ocn comp.
2192         b) no needs to modify the run-Off map when changing tiling (was needed
2193            even if using the same tiling between atm & ocn).
2194         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
2195            full land tiles); not yet tested.
2196      - check for valid mapping from comp. tile to coupler global array
2197      - improve report of tile registration results to log file.
2198    o pkg/exch2:
2199      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
2200        tile-registration (CPL_REGISTER);
2201      - activate (un-comment) definition and setting of "W2_tileIndex" list to
2202        store the local bi,bj indices of each tile;
2203      - also print bi,bj in local report to log file;
2204      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
2205        Jun 2009 modif of pkg/exch2).
2206    o testing on baudelaire:
2207      - run 2 tests at a time: no significant slow down (since enough cpu) and
2208        get the full set of test done earlier
2209      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
2210    o model/src/thermodynamics.F and routines called from it:
2211      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
2212        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
2213        velocity (outp) by adding bolus velocity.
2214      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
2215        mass transport from velocity + lateral grid cell area
2216      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
2217      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
2218     in thermodynamics.F
2219      - remove k from thermodynamics.F and move it to temp_integrate.F
2220        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
2221        loop).
2222      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
2223        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
2224        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
2225        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
2226      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
2227        global_ocean.90x40x15, tutorial_global_oce_biogeo and
2228        tutorial_tracer_adjsens (+ TLM output).
2229    o tools/OAD_support and (verification/*/) code_oad:
2230      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
2231        module conversion ; remove unneeded CPP_EEOPTIONS.h.
2232      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
2233        version (closer to model/inc/CPP_OPTIONS.h).
2234    o model/src:
2235      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
2236        retired list of parameters (routine FREEZE has been replace by surface
2237        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
2238    o pkg/gmredi:
2239      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
2240        velocity (same scheme but affects machine truncation) for GM_AdvForm.
2241      - update output of FWD experiments: front_relax.bvp,
2242        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
2243    
2244    checkpoint64q (2013/11/17)
2245    o verification:
2246      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
2247        tutorial_global_oce_biogeo and global_ocean.90x40x15.
2248      - generate new output (growth & melt) for seaice_itd experiment after
2249        updating the input pickup_seaice files (previously wrong).
2250    o pkg/cost:
2251      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
2252        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
2253        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
2254          cannot be applied to var in common block).
2255        o allows to get results independent of tile-per-proc setting (if using
2256          slower GLOBAL_SUM_SEND_RECV option).
2257      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
2258        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
2259        forward gradients: update output).
2260      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
2261        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
2262    o pkg/mom_common:
2263      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
2264        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
2265        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
2266        ensure that all field value that are used are set.
2267    o tutorial_deep_convection (smag3d):
2268      - add missing scaling in mom_calc_smag_3d.F;
2269      - set smag3D_coeff in input.smag3d such that results do not change.
2270    o pkg/dic:
2271      - change dic_cost.F to compute cost on each tile first and then apply
2272        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
2273        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
2274      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
2275    o eesupp/src & pkg/mdsio:
2276      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
2277        (from pkg/mdsio) since they are no longer used for tape IO.
2278      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
2279        (+ keep a copy in pkg/atm_ocn_coupler).
2280    o verification/isomip:
2281      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
2282    o tools/build_options:
2283      - optfile linux_amd64_ifort11, fast (no ieee) case:
2284        to get a working restart for all experiments, add "-fp-model source"
2285        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
2286    
2287    checkpoint64p (2013/10/20)
2288    o pkg/autodiff:
2289      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
2290        criteria, return to simple (default) tape IO format.
2291    o pkg/mdsio (+ eesupp/src):
2292      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
2293        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
2294      - fix globalFile and singleCpuIO options using simpler global mapping.
2295      - new pairs of scatter/gather vector S/R (one for each type, generated from
2296        template) corresponding to simpler global mapping.
2297      - adread_write.F: switch to new S/R (but leave old calls commented) and write
2298        to globalFile when parameter globalFiles is set to True.
2299      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
2300    o pkg/autodiff:
2301      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
2302        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
2303        missing, just add a STOP if array type do not match.
2304    o pkg/exf:
2305      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
2306         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
2307         and rename array obsSIce to exf_iceFraction.
2308    o tutorial_deep_convection:
2309      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
2310        for now all in this exp. code dir.
2311      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
2312        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
2313    o eesupp/src:
2314      - added SINGLE_DISK_IO option because reading of parameter files on
2315        very large number of processors did not work with existing set-up
2316    
2317    checkpoint64o (2013/09/25)
2318    o pkg/atm_phys & atm_compon_interf:
2319      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
2320    o tools/build_options:
2321      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
2322        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
2323        remove CPP setting (was identical to genmake2 default).
2324    o pkg/gmredi & model/src: Some updating and work done on the residual model.
2325      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
2326      - fixed up the calculation of the eddy stress and how it is added to the
2327        external forcing via taueddy_external_forcing.F
2328      - at the moment, it is very experimental and only works with the variable eddy
2329        diffusivity calculated in gmredi_k3d.F
2330    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
2331        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
2332    o testreport (& tools/do_tst_2+2):
2333      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
2334    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
2335      - remove CPP='cpp -traditional -P' (this is genmake2 default)
2336      - add switch (for big setups) to use 'medium' memory-model (but leave it
2337        commented out for now). Note: needed with FC 19 to compile big setups.
2338    o pkg/atm_compon_interf:
2339      - regroup per field origin (model & pkgs) the coupling storage routines
2340         (which accumalate in time each coupling field)
2341      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
2342        update accordingly + simplify aim_do_physics.F
2343    
2344    checkpoint64n (2013/08/26)
2345    o pkg/bbl:
2346      - update formulation to reduce dispersion of tracer properties in bbl
2347      - replaced horizontal and vertical transport parameters with velocities
2348      - changes results for verification/global_with_exf.yearly
2349    o verification/halfpipe_streamice:
2350      - change to matrix construction; update both Fwd & AD output.
2351    o verification/tutorial_tracer_adjsens:
2352      - OpenAD test: switch to vector-invariant momentum since fluxform with
2353        rStar causes problems with OpenAD; update output.
2354    o tools:
2355      - genmake2: define a common prefix for all temp-file names ; move them
2356        to local /tmp disk (but would be easy to move them back);
2357      - xmakedepend: apply the same switch for temp-files.
2358    o pkg/offline:
2359      - changes for use with rStar (NLFS): assume that we continue to provide
2360        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
2361        output files) and apply r* scaling at each time-step (function of the time
2362        varying Eta field); use normal pickup files (needed for restart with NLFS).
2363    o adjoint with OpenAD:
2364      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
2365        package openad.  This package has to be compiled for all runs with OpenAD
2366        instead of specifying code_oad_all as a modification directory.
2367      - link the fortran templates from tools/OAD_support to the build directory
2368        for preprocessing to avoid conflicts between different setups compiled
2369        simultaneously and simplify cleanup.
2370    o pkg/exf:
2371      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
2372        main model or other pkgs are exchanged in EXF_MAPFIELDS).
2373    o model/src:
2374      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
2375        (similar to do_fields_blocking_exchanges.F).
2376    o tools/genmake2:
2377      - remove TAF output src code just before calling staf (when not doing a fresh
2378        built, will stop if things go wrong with staf).
2379      - fix target "adobj" (left from TAF version-2 transition)
2380    o pkg/diagnostics:
2381      - add a parameter to track the status of pkg/diagnostics activation;
2382        this replace/extend the use of logical param "settingDiags" (to check
2383        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
2384        New S/R to print error message and stop when pkgStatus is not right.
2385      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
2386    
2387    checkpoint64m (2013/08/13)
2388    o model/inc:
2389      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
2390        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
2391    o pkg/kpp & aim_v23:
2392      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
2393    o pkg/seaice:
2394      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
2395        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
2396      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
2397    o eesupp/src:
2398      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
2399        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
2400    o switch to TAF version-2:
2401      - add flow directives to "freeze" naming convention for ad-routines that
2402        are used in I/O routines of adjoint state and associated common blocks
2403        that are used in adcommon.h (backward compatible with version-1)
2404      - update all ad-optfiles (in tools/adjoint_options + few local to some
2405        verification exp) to switch to latest TAF version (currently 2.5.5);
2406        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
2407        out except for diva).
2408      - the major change with TAF version-2 is that both the differentiated
2409        routines and the forward routines (new) are returned as part of the TAF
2410        output source code. Update genmake2 accordingly.
2411      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
2412        with version-2 when compared to TLM or FWD gradient); other experiments
2413        output show minor changes (machine truncation level); update the few AD &
2414        TLM output with 12 matching digits only (some prior to version-2 switch).
2415    
2416    checkpoint64l (2013/08/05)
2417    o model/src:
2418      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
2419      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
2420        when using TAF but only if using OpenAD.
2421    o pkg/mom_common+fluxform+vecinv:
2422      - always set horiz. viscosity arrays to background value before calling
2423        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
2424        only when using variable horiz. viscosity (useVariableVisc=T);
2425      - simplify mom_vecinv.F (only 1 block for momViscosity).
2426    o pkg/mom_common: variable horiz. viscosity in NH code
2427      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
2428        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
2429      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
2430        useBiharmonicVisc & useVariableVisc.
2431      - fix old bug (already in 1rst implementation of variable horizontal viscosity
2432        in calc_gw.F, version 1.27, 2006/06/20):
2433        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
2434        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
2435      - change background horiz viscosity in vertical momentum (gW) to always be
2436        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
2437        any type of variable viscosity, e.g., viscAh/4Grid)
2438      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
2439        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
2440        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
2441        default viscAh,viscA4 is zero).
2442    o model/src:
2443      - extend length of drC & recip_drC from Nr to Nr+1.
2444    o Divided Adjoint (DIVA) with MPI:
2445      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
2446      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
2447        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
2448    
2449    checkpoint64k (2013/07/23)
2450    o tools/OAD_support:
2451      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
2452        and remove it from genmake2.
2453    o tools/build_options:
2454      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
2455        MPI_HEADER_FILES list (let genmake2 find the missing headers)
2456    o verification/halfpipe_streamice:
2457      - change to driving stress formulation; update both Fwd & AD output.
2458    o tools/genmake2 and Divided Adjoint with MPI:
2459      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
2460      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
2461      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
2462        Makefile, which is set by genmake2, and check which mpi-headers are needed.
2463        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
2464      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
2465    o testreport:
2466      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
2467        perform additional runs (number of additional runs is "add_DIVA_runs" taken
2468        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
2469    o verification/lab_sea (AD test):
2470      - change to test Divided Adjoint Run in this set-up (both standard AD test
2471        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
2472    o pkg atm_ & ocn_compon_interf:
2473      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
2474        staggerTimeStep implementation) and disable (retired) corresponding
2475        parameter.
2476    o pkg/offline:
2477      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
2478      - add S/R OFFLINE_CHECK to print offline parameter summary
2479        and stop if loading a file that is not used;
2480      - enable to calculate GMRedi tensor, KPP mixing and convective index
2481        when the corresponding file(s) is/are not specified (but pkg is used).
2482      - comment out resetting of monitorFreq (to endTime) since it still useful
2483        for monitoring CFL numbers and checking offline fields.
2484    o OpenAD:
2485      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
2486        smaller standard output) and generate new (smaller) output (on baudelaire
2487        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
2488    o model/src:
2489      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
2490        (where external_forcing_adjust was called) and change list of arguments;
2491      - merge external_forcing_adjust.F into external_forcing_surf.F
2492      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
2493        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
2494        previously in file "balance_relax.F", now removed); remove corresponding
2495        arrays in FFIELDS.h.
2496      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
2497        a hack for getting back surfaceForcingS (loaded from file) when using
2498        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
2499      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
2500        (was getting only 11 digits for AD-grad, due to different truncation
2501         error in AD code).
2502    
2503    checkpoint64j (2013/07/04)
2504    o pkg/offline:
2505      - to enable the use of other features with pkg offline (e.g., obcs),
2506        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
2507      - comment out "allowFreezing" (now active) in 2 offline testing exp.
2508    o pkg/exf ALLOW_RUNOFTEMP
2509      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
2510      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
2511      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
2512    o pkg/atm_phys:
2513      - allows to add some damping on uVel,vVel (strength only function of k).
2514    o verification, ad-tests:
2515      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
2516        global_ocean_ebm and offline_exf_seaice.thsice.
2517    o verification/halfpipe_streamice:
2518      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
2519        flux input boundary conditions to be ignored; a fix for this bug changed
2520        verification results for forward test.
2521      - add adjoint test.
2522    o pkg/ptracers:
2523      - allow to restart without SOM pickup (resetting SOM to zero).
2524    o pkg/gmredi:
2525      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
2526      - It uses mixing length theory and suppression by steering level effects to
2527        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
2528        to JPO, for more details).
2529      - It also uses the diffusivity to calculate an eddy induced streamfunction
2530        based on a PV closure (rather than a buoyancy closure as in GM).
2531      - New files added to pkg/gmredi:
2532        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
2533          induced overturning streamfunction (called from gmredi_calc_tensor)
2534        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
2535          for use in gmredi_k3d
2536        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
2537          the eddy diffusivity
2538    
2539    checkpoint64i (2013/06/18)
2540    o pkg/cheapaml:
2541      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
2542        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
2543        with pkg/cheapaml.
2544    o utils/python: add subpackage for cubed sphere function, first example is
2545        simple cs.pcol to plot 2D fields on a map
2546    o pkg/streamice:
2547      - This is a new package in MITgcm, which solves dynamic equations for ice
2548         sheets and ice streams
2549      - At the moment it is independent of atmosphere/ocean dynamics, or any
2550        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
2551        ed that this will change)
2552      - There is a new verification exercise that tests it, halfpipe_streamice,
2553        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
2554        rectangular embayment
2555      - halfpipe_streamice is forward-only for now, will have TAF test soon
2556      - for questions, email dgoldber@mit.edu
2557    o pkg/thsice:
2558      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
2559        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
2560      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
2561         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
2562      - allow precip from pkg/cheapaml to make snow over seaice.
2563    o pkg/cfc:
2564      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
2565      - remove atmos CFC 2-D arrays from common bloc (now local variables)
2566      - change some hard-coded constant to run time parameter for reading and
2567        and interpolating atmospheric CFC ; keep same default as previously.
2568      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
2569      - put arguments in standard order: myTime, myIter, myThid
2570      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
2571        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
2572      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
2573      - new routine to print summary of CFC params and check for consistency.
2574    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
2575      similar to thsice_advdiff.
2576      Note that for the B-grid case the routine parameters uc/vc are overwritten.
2577    o pkg/cfc:
2578      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
2579        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
2580      - fix interpolation of atmphspheric CFC between Sorthern and Northern
2581        hemisphere value.
2582    o pkg/seaice:
2583      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
2584    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
2585                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
2586      - requires an additional time level that is stored in the pickup
2587      - you can start with AB2 from a pickup without this time level with
2588        pickupStrictlyMatch = .false.
2589    
2590    checkpoint64h (2013/05/26)
2591    o pkg/cheapaml:
2592      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
2593        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
2594      - consistent treatment of uWind,vWind location: assume everywhere in
2595        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
2596        (Note: was already the case for Tair,Qair advection);
2597        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
2598      - compute diabatic forcing only in the interior (excluding overlap regions)
2599      - fill in array "Qsw" (for short-wave heating);
2600      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
2601        before any update (consistent with MITgcm state var diagnostics);
2602      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
2603        non periodic ; + adjusted for uWind,vWind (C-grid).
2604    o pkg/seaice:
2605      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
2606        add explicitly pkg/exf in experiments that currently use pkg/seaice.
2607      - allows to compile pkg/seaice without pkg/exf.
2608    o tools/OAD_support:
2609      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
2610        of array "ourStepOf" in function rvNextAction (revolve.F90).
2611    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
2612      - change pkg name (to be used with other atmospheric physics pkg)
2613        but by-pass CVS when making the new pkg so that we keep the CVS history.
2614    o pkg/offline:
2615      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
2616        (previously called from pkg/dic_surfforcing_init.F)
2617    o model/src:
2618      - re-order sequence of calls within packages_init_variables.F, using
2619        standard order, except for:
2620         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
2621         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
2622    o new pkg: atm_phys
2623      - add entry point and source code (previously in contrib
2624          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
2625        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
2626      - re-order sequence of calls within packages_readparms.F,
2627         packages_init_fixed.F and packages_write_pickup.F
2628        (but skip packages_init_variables.F because of TAF issues).
2629      - update contrib/*/atm_gray/ experiment.
2630    o pkg/seaice (ITD code):
2631      - simplify and fix the writing of pickup-files for ITD case
2632    o pkg/seaice (ITD code):
2633      - introduce floe size dependent lateral melt for ITD case;
2634      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
2635      - update seaice_itd experiment main output.
2636    o pkg/thsice:
2637      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
2638        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
2639        changed accordingly pkg/atm2d.
2640    
2641    checkpoint64g (2013/05/01)
2642    o pkg/exf ALLOW_RUNOFTEMP
2643      - if defined,  river and glacier runoff temperature can be read-in from
2644        runoftempfile; runoftempfile needs to have same format as runofffile
2645    o pkg/thsice (& pkg/bulk_force):
2646      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
2647        for energy content of Precip + RunOff & Evap (like with pkg/exf).
2648      - change computation domain to always be the interior (without overlap).
2649      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
2650    o verification/tutorial_global_oce_biogeo:
2651      - add preliminary OpenAD setup (still has problems)
2652    o pkg/seaice:
2653      - turn some parameters for choosing the convergence criterion of
2654        the inexact Newton method (JFNK) into runtime parameters for convenience
2655      - clean up seaice_calc_viscosities.F: remove/retire two options for
2656        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
2657        the results of lab_sea/input because a division has been replaced by
2658        a multiplication with the reciprocal (sumNorm)
2659      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
2660        convergence of solver (changes results, of course), and to test some
2661        new features
2662    o model/src:
2663      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
2664      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
2665      - move forcing adjustment (balancing surface forcing) in specific S/R
2666        where might also be applied exchanges (if needed) to forcing arrays.
2667    o pkg/shelfice:
2668      - allow to specify the Ice-Shelf mass per unit area (instead of
2669        shelficeLoadAnomaly) and do the conversion from one to the other
2670      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
2671        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
2672        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
2673        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
2674      - update isomip experiment forward output (get machine truncation error
2675        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
2676    o verification/offline_exf_seaice:
2677      revise data.seaice in input.thermo and input_ad and update results accordingly
2678        HO = 0.2, SEAICE_areaLossFormula = 2,
2679        SEAICE_growMeltByConv = .TRUE.,
2680        SEAICE_doOpenWaterMelt = .TRUE.,
2681      Improve consistency with input.thsice and fix the spurious 500m ice corners
2682    o verification/global_ocean.cs32x15:
2683      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
2684        in icedyn (thsice+seaice-dyn) test and update output.
2685    o verification/offline_exf_seaice:
2686      - adjust list of tested variables (with testreport) and update
2687        standard test output with better slection of monitored fields.
2688    o pkg/cd_code:
2689      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
2690        experiment lab_sea.hb87
2691    o tools/genmake2:
2692      - change default makedepend from the system default to tools/xmakedepend:
2693        When no makedepend is specified, select tools/xmakedepend it the test pass,
2694        otherwise select the system default (if exist and pass the test) or
2695        try to build cyrus-makedepend ; stop if none of the 3 works.
2696    o pkg/exf & pkg/thsice:
2697      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
2698        for energy content of Precip + RunOff & Evap. Assumes:
2699       1) Rain has same temp as Air.
2700       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
2701       3) Run-Off comes at the temp of surface water (with same Cp)
2702       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
2703        put directly into Latent Heat flux & should use water-vapor heat capacity.
2704       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
2705        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
2706    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
2707        (compile when SEAICE_ALLOW_JFNK is defined)
2708    o pkg/thsice:
2709      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
2710        implementation): move THSICE_AVE call after the advection (called directly
2711        from thsice_do_advect.F).
2712    o verification/global_ocean.90x40x15 and OpenAD:
2713      New experiment for OpenAD is identical to the one in input_ad except that
2714        multiDimAdvection=.FALSE.,
2715      There is still an issue with this.
2716    o pkg/thsice:
2717      - account for ice velocity (ocean relative velocity) in turbulent heat flux
2718        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
2719        and offline_exf_seaice (main test).
2720    
2721    checkpoint64f (2013/03/31)
2722    o verification/OpenAD:
2723      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
2724    o verification/isomip, pkg/shelfice and OpenAD:
2725      - add OpenAD setup to this exp and make shelfice package work with OpenAD
2726    o verification/tutorial_global_oce_biogeo:
2727      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
2728    o verification/offline_exf_seaice:
2729      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
2730    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
2731      - add OpenAD setup to this exp and make ptracers package work with OpenAD
2732    o pkg/seaice/seaice_evp.F:
2733       mask the asymmetric contribution of the ice-ocean stress (when
2734       the turningAngle is non-zero) over open water to avoid stripes
2735       in the EVP-solutions after many EVP-substeps. This does not change
2736       the verification experiment (because turningAngle=0 in that experiment),
2737       but will affect other EVP solutions with turningAngle.ne.0
2738    o verification, AD & TLM output:
2739      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
2740        additions and multiplications which affect results at machine truncation
2741        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
2742        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
2743        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
2744        digits of matching.
2745    o pkg/seaice:
2746       modify lsr-algorithm so that it vectorizes AND converges by using a
2747       "zebra" method: split vector loop into two with step size 2; this
2748       solves a general convergence problem for the JFNK solver on a vector
2749       computer. It has the potential to even improve convergence for
2750       non-vector machines, but it does change the results so it is turned
2751       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
2752       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
2753    
2754    checkpoint64e (2013/03/05)
2755    o pkg/ecco and several verification experiments:
2756       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
2757       from ecco package, and revert to unified routine in model/src/
2758       Adjust verification experiments accordingly, especially gloal_oce_llc90
2759       Should conclude long-standing work by Gael to reconsile the_main_loop with
2760       ECCO and will enable OpenAD's revolve loop in ECCO setup.
2761    o pkg/generic_advdiff:
2762      - implement compressible flow method for multi-dim advection (similar to
2763        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
2764        TAF generates many recomputations) to use it; no yet coded with implicit
2765        vertical advection.
2766      - change experiment advect_cs (new output) and advect_xy (same output)
2767        to test compressible flow multi-dim advection.
2768    o pkg/generic_advdiff:
2769      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
2770        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
2771    o pkg/seaice:
2772      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
2773        bug affects two verification experiments (lab_sea and lab_sea.hb87),
2774        recover old (wrong) results by setting noSlipFac = 2. in
2775        seaice_calc_strainrates.F;
2776      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
2777      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
2778        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
2779      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
2780    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
2781      - new subroutines seaice_lsr_tridiagu/v
2782      - introduce loop bounds i/jmin/max to be able to use a restricted
2783        additive Schwarz method, but not used for now.
2784      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
2785      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
2786    o OpenAD support
2787       Reorganize S/R call for overall time-stepping loop to facilitate
2788       OpenAD revolve loop replacement
2789       (new S/R main_do_loop.F)
2790    o model/src:
2791      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
2792      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
2793        ADAMS_BASHFORTH2.
2794    o pkg/cheapaml:
2795      - add new parameter (default=F, same as before) to disable full domain
2796        (including land) periodicity in X & Y dir.
2797      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
2798        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
2799        into single S/R CHEAPAML_TIMESTEP.
2800    
2801    checkpoint64d (2013/02/17)
2802    o pkg/monitor (angular momentum):
2803      - do not add Eta contribution to the total AM if using rigid-lid;
2804      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
2805      - horizontal discretisation: compute Zonal wind contribution separately for
2806        each component (instead of from cell centered averaged) and use the 4
2807        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
2808      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
2809        FreeSurf) if using vectorInvariant momentum.
2810    o model/src (horizontal grid):
2811      - move initialisation of all horizontal grid arrays to null value
2812        from specific horizontal grid S/R to main S/R INI_GRID;
2813      - add 2 new arrays to project model C-grid velocity on to zonal direction
2814        (similar to AngleCosC & -AngleSinC but at U and V point location) and
2815        compute them in S/R CALC_GRID_ANGLES.
2816    o pkg/seaice: replace a hard coded parameter by a runtime parameter
2817        SEAICE_JFNK_tolIter
2818    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
2819        preconditioner for JFNK (run LSR into the overlaps as far as possible,
2820        i.e OLx/y-2, but overwrite the solution in the overlaps)
2821      - extend loop range in seaice_calc_viscosity
2822      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
2823      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
2824      - slightly modify loops in tridiagonal solver lsr-preconditioner
2825      - by default remove the extra exchange in seaice_preconditioner with a
2826        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
2827      - modify offline_exf_seaice so that old results without RAS are reproduced
2828        for output.dyn_jfnk.txt
2829      in seaice_fgmres.F (unrelated to RAS)
2830      - add a cpp-flag option for a re-ordered mapping (potentially more
2831        efficient), but because this changes the results, turn it off by
2832        default
2833      - replace the save statement by local common blocks
2834    o utils/matlab:
2835      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
2836      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
2837        instead of local script "load_cs.m".
2838    o pkg/seaice:
2839      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
2840        to the scalarProductMetric and the unrolling. By chance this does not
2841        change the verification experiment, because of the particular domain
2842        decomposition
2843    o pkg/diagnostics:
2844      - change default missing_value from UNSET_RL to -999.
2845    o pkg/layers: improve vectorization of layers_fluxcalc.F
2846      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
2847        time spent in this routine by more than a factor of 3 on an NEC-SX8
2848      - step 2: replace search algorithm by a bisection algorithm found in
2849        Press et al. Numerical Recipes in Fortran. This algorithm can be
2850        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
2851        For now, use this algorithm only for TARGET_NEC_SX defined.
2852      - moved the search algorithm into a separate subroutine, that is kept
2853        within the same file for automatic inlining.
2854      - modified catching potential errors
2855    o pkg/ecco:
2856      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
2857    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
2858      - modifications for ALLOW_GENTIM2D_CONTROL
2859      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
2860      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
2861      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
2862      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
2863    o model/src:
2864      - account for moist thermodynamics in (dry) potential temperature equation;
2865        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
2866        and cpl_aim+ocn.
2867      - also switch to standard compiler (gfortran, was using ifort previously)
2868        for fizhi-cs experiments reference output.
2869    o pkg/ctrl:
2870      - 1st step toward generic time-varying control variable (2D) via CPP option
2871        ALLOW_GENTIM2D_CONTROL
2872      - note new namelist ctrl_nml_genarr in data.ctrl
2873    o verification/global_ocean.cs32x15:
2874      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
2875        thsice calling sequence and update "output.icedyn.txt" output file.
2876    o pkg/ptracers:
2877      - from Ryan A.: code to allow to restart a tracer at regular time interval
2878        specifying a reset frequency and a reset-phase (for each tracers).
2879    o pkg/thsice:
2880      - implement new sequence of calls for thsice+seaice:
2881          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
2882          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
2883      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
2884        in CPP_OPTIONS.h) to recover old sequence;
2885      - update diagnostics for Intermediate State thsice diagnostics: now filled
2886        just before advection (instead of just after advection in old sequence);
2887      - update output of experiment offline_exf_seaice (standard test);
2888      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
2889        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
2890    o pkg/aim_v23:
2891      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
2892      - use standard pkg/mdsio routines to read & write CO2 pickup file;
2893      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
2894      - Implement new sequence of calls for seaice advection (with thsice and
2895        seaice diffusion): do ice advection after ice-Thermodynamic (previously
2896        was done before); change aim_do_physics.F (split the bi,bj loops block);
2897      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
2898    o pkg/thsice:
2899      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
2900        where just seaice diffusion is used without seaice-dynamics.
2901    
2902    checkpoint64c (2013/01/18)
2903    o pkg/seaice:
2904      - add a parameter JFNKres_tFac that can replace JFNKres_t
2905        (= JFNKres_tFac*JFNKresidual before JFNK solver)
2906      - add a line search option to the JFNK solver
2907      - move update of u/vIce and computation of initial residual into a separate
2908        routine (same file); makes the code a little easier to read (?)
2909      - the line search requires computation of the residual and for some reason
2910        I cannot do the update of u/vIce at the beginning of the Newton loop
2911        without changing the results, so we move computation of the new residual
2912        also to the end of the Newton loop, even without the line search
2913    o pkg/mdsio:
2914      - write missing value (corresponding to undefined array value) to meta files;
2915        skip this if missing value is one (UNSET_RL would be a better value for the
2916        case of undefined missing value but it's current the default missing-value);
2917        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
2918    o pkg/exf & thsice:
2919      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
2920        diagnostics) even when SHORTWAVE_HEATING is #undef;
2921    o verification/cfc_example:
2922      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
2923        illustrate how to use it).
2924    o verification/offline_exf_seaice:
2925      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
2926        files to only one time-record.
2927      in input.thermo: narrow the 2 bands of low initial ice-concentration near
2928        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
2929        snapshot output; same mcPheePiston value as in thsice with
2930        surf-current=0.2m/s.
2931      in input.thsice: similar set-up as in input.thermo (channel with same seaice
2932        initial conditions).
2933    o verification/cfc_example:
2934      - update file "data" with more standard choice (default rotationPeriod,
2935        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
2936        set deltaTFreeSurf to deltaTtracer) and update the output.
2937    o pkg/layers:
2938      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
2939      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
2940    o verification/offline_exf_seaice:
2941      - set all {field}period to zero for constant-in-time forcing (not tested
2942        anywhere else).
2943    o verification/offline_exf_seaice:
2944      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
2945      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
2946    o model/src:
2947      - implement Finite-Volume method for (hydrostatic) presure gradient
2948        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
2949    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
2950      - In order to be compatible with the default EVP code, this requires changing
2951        the EVP code around a little; and because any small change immediately
2952        breaks the lab_sea.hb87 verification experiment, the reference output is
2953        updated two times (each time the remaining aggrement was only 2 digits):
2954        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
2955        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
2956        The adjoint test lab_sea.evp also needed to be updated.
2957      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
2958        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
2959        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
2960        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
2961        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
2962        kept obscure, because I need to test it a little more.
2963    o pkg/cheapaml:
2964      - fix few incorrect type (_RL/_RS) in subroutine calls.
2965    o pkg/seaice:
2966      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
2967        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
2968    o model/src:
2969      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
2970        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
2971        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
2972    o pkg/cheapaml:
2973      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
2974        update output of experiment cheapAML_box.
2975      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
2976        and set them only in one place (cheapaml_readparms.F).
2977      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
2978      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
2979        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
2980    o model/src/the_main_loop.F:
2981      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
2982    o pkg/seaice:
2983      - remove legacy branch code.
2984      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
2985    o verification/*/code*/SEAICE_OPTIONS.h:
2986      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
2987        SEAICE_CAP_HEFF).
2988    o pkg/cheapaml:
2989      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
2990        to load new forcing fields.
2991      - add missing "_d 0" where it's needed; + some editing (improve indentation).
2992      - remove switch to "-r8" compiler option (no longer needed) in verification
2993        cheapAML_box, keep same output (small trucation error differences).
2994    o verification/offline_exf_seaice:
2995      - add thermodynamics only test.
2996    o verification/cheapAML_box:
2997      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
2998        keep same output (same 14 digits for cg2d).
2999      - switch on "-r8" compiler option (some numerical values are missing
3000        the "_d 0") and update output (only 6 digits for cg2d were preserved).
3001    
3002    checkpoint64b (2012/12/24)
3003    o pkg/cheapaml:
3004      - remove un-used variables (Qnet,EmPmR) from pickup files.
3005      - store tendency of advected variables into cheapaml pickup file
3006        and fix the AB-2 restart.
3007    o verification/offline_exf_seaice and lab_sea adjoint:
3008      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
3009      - switch to 4 time steps in offline, consistent with lab_sea.
3010      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
3011      - update results after change of experiment seaice.
3012    o pkg/seaice:
3013      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
3014        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
3015        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
3016        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
3017    o model/src:
3018      - add run-time parameter to select CG2D solver minimum-residual solution
3019        (in case of a poor convergence).
3020    o pkg/seaice/seaice_lsr.F
3021      - move calculation of matrix coefficients into new
3022        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
3023        file; the main purpose of this change is to be able to reuse the code
3024        in S/R SEAICE_PRECONDITIONER
3025      - modify the computation of the residual so that the mass of sea-ice
3026        is not used twice; this simplifies the calculations, but since
3027        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
3028        not tested in testreport---this does not affect the testreport results.
3029    o verification/seaice_obcs:
3030      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
3031        verification/lab_sea/input.salt_plume; changes results/output.txt*
3032    o model/src:
3033      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
3034    o pkg/seaice:
3035      - improve description of parameters in seaice_fgmres.F and start
3036        cleaning up the code
3037      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
3038        second argument
3039      - add a metric based on grid cell area to SEAICE_SCALPROD; update
3040        results of offline_exf_seaice.dyn_jfnk
3041      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
3042    o pkg/aim_v23:
3043      - fix an other bug in dissipation heating (grid-cell area was missing).
3044    o model/src + pkg/seaice:
3045      - add global (multi-tile) linear solver for pair of tri-diagonal system
3046        along X and Y lines, respectively for U and V component.
3047        Note: 1) MPI and cube-exchange not yet coded.
3048            2) probably not accurate for poorly conditioned / large size problem.
3049      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
3050        default: not compiled and not used.
3051    o pkg/seaice:
3052      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
3053        introduce bi/bj loops and use global_sum_tile_rl instead of
3054        mpi_allreduce in seaice_fgmres.F
3055      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
3056      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
3057      - add a verification experiment for JFNK in offline_exf_seaice
3058    o verification:
3059      - change (for now, only fwd test) offline_exf_seaice experiment:
3060        use a re-entrant channel with idealized coastline (trapezoidal shape)
3061        at southern boundary to explore seaice dynamics and thermodynamics
3062        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
3063        secondary test (input.thsice) use thermodynamics only with SST relaxation.
3064      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
3065    o pkg/exf:
3066      - disable "sstExtrapol" when Nr=1
3067    o verification:
3068      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
3069        to test pkg/cheapaml.
3070    o pkg/aim_v23 & pkg/shap_filt:
3071      - fix dissipation heating (erroneous gravity multiplication factor).
3072    o pkg/seaice:
3073      - remove unused field pressPre from jfnk solver
3074      - rename two subroutines in seaice_preconditioner.F
3075    o eesupp/src:
3076       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
3077    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
3078       - remove wrong parts of the rhs and the lhs (were in there
3079         because I did not understand the concept of this preconditioner)
3080       - add an exchange between u- and v-sweep. This increases communication
3081         by a factor of two but improves the convergence of jfnk. Ideally,
3082         one would like the u- and v-sweep to be independent. So far within
3083         undocumented ifdefs
3084       - reorganize the extra computations for printing the residuals
3085    o tools/genmake2:
3086      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
3087        since it's not necessary (and was preventing to use MNC in some cases).
3088    
3089    checkpoint64a (2012/11/16)
3090    o pkg/autodiff:
3091      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
3092        autodiff_readparms.F no longer depends on calling order (within
3093        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
3094        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
3095        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
3096    o pkg/obcs:
3097      - adding tidal velocity forcing capability to obcs
3098        for usage example, see verification/seaice_obcs/input.tides
3099    o pkg/seaice:
3100      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
3101        SEAICE_LSRrelaxU/V
3102      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
3103    o pkg/aim_v23:
3104      - implement heating from friction (bottom friction and stratospheric drag).
3105    o pkg/shap_filt:
3106      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
3107        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
3108    o model/src:
3109      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
3110        time-constant addMass field from file (addMassFile);
3111      - support for heating due to friction (and Kinetic Energy dissipation):
3112        add option, run-time switch and 3-D field array + support code ; each pkg
3113        or S/R can add heating contribution (if there is a sink of KE); the sum is
3114        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
3115    o pkg/seaice:
3116      - complete merge of ITD code into seaice_growth.F
3117        from MITgcm_contrib/torge/itd/code/
3118        no verification so far, but Torge Martin tested
3119        "1-D test case and Beaufort set up;
3120        deliver okay results after 1 model year."
3121      - complete merge of SEAICE_SIZE.h into all relevant routines
3122      - move computation of eta at Z-points into calc_viscosities
3123        + introduce global field etaZ
3124        + add different methods for computing etaZ, for now the old
3125          method (simple averages of eta to Z-points) is hardwired
3126        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
3127          seaice_preconditioner
3128      - simplify computations for SEAICE_ZETA_SMOOTHREG
3129      - seaice_preconditioner:
3130        + replace one remaining press by pressLoc (mistake)
3131        + adjust printing of residuals
3132      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
3133        + add (SEAICE.h) and rename some counters (initiliased in
3134          seaice_init_fixed.F)
3135        + add _BEGIN/END_MASTER (myThid)  around print statements
3136        + print total number of iterations and failures over SEAICE_monFreq
3137          interval to STDOUT
3138      - move control over output-messages by fgmres to seaice_jfnk to save
3139        some operations
3140      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
3141        in order to make restarts with sol .ne. zero (fgmres with restarts)
3142        (seaice_jfnk.F, seaice_fgmres.F)
3143      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
3144        a serious convergence problem when open boundaries are involved
3145    o pkg/ggl90: fix computation of control volumes for the case of
3146      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
3147      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
3148    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
3149    o pkg/autodiff
3150      - Add inAdMode switch for SEAICEuseDYNAMICS:
3151        SEAICEuseDYNAMICSinAdMode
3152        (extend logic in ADAUTODIFF_INADMODE_SET)
3153    o pkg/seaice
3154      - Step 1 of merging ice-thickness distribution (ITD) code from
3155        MITgcm_contrib/torge/itd/ (author: Torge Martin)
3156        The code implements concept laid out in Thorndike et al. (1975);
3157        code is enabled via CPP flag SEAICE_ITD
3158        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
3159        code is not complete yet!!
3160      - SEAICE_SIZE.h now included in almost all seaice routines
3161    o verification (using seaice):
3162      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
3163        global_ocean.cs32x15.seaice ; update results.
3164      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
3165      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
3166        offline_exf_seaice (previously compiling B-grid).
3167    o pkg/exf:
3168      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
3169        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
3170        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
3171    o pkg/layers (adjust changes from Sept 19):
3172      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
3173        this allows to remove "layers_maxNum" dimension from all layers arrays.
3174    o pkg/layers (adjust changes from Sept 19):
3175      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
3176      - snap-shot extended to all type of layers (not just the 1rst type);
3177      - remove layers variables when corresponding CPP option is undef.
3178    o pkg/layers:
3179      - rename pkg/layers variable and add new output (layer exist & un-weighted
3180        velocity in layer)
3181    o pkg/seaice:
3182      - simplify (?) ocean-drag coefficent computations by using
3183        the same routine in all three solvers (saves some code lines)
3184      - remove global fields DRAGA and DRAGS from C-grid code and
3185        declare them locally in lsr.F (the only place where they are
3186        still used)
3187      - update AD output of lab_sea.evp (very sensitive anyway).
3188    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
3189      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
3190      and SEAICEuseJFNK=.true. A few things to note:
3191      - involves a FGMRES, that is parallel but very inefficient,
3192        because of many scalar products (global sums) in the Gram-Schmidt
3193        orthogonalization method. Needs to be replaced. Original code
3194        from J.-F. Lemieux
3195      - preconditioner for FGMRES is a stripped down version of LSOR
3196      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
3197        preconditioner. For the preconditioner, the default is set to 10.
3198      - Jacobian times vector is computed with finite differences
3199      - marginally related to JFNK-solver: add a smooth regularization for
3200        zeta with tanh that will improve convergence (Lemieux and Tremblay,
3201        2009) for any implicit solver (not implemented for EVP because EVP
3202        does not need this regularization in the first place). Define
3203        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
3204    o eesupp/src:
3205      - check in genmake2 that intrinsic S/R flush is available.
3206      - add S/R to flush IO unit (if intrinsic S/R flush is available)
3207      - flush standard & error msg unit before MPI termination
3208      - if debugMode, flush IO unit after printing msg
3209    o pkg/ctrl:
3210      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
3211        to ctrl_set_unpack_xyz.
3212    
3213    checkpoint64 (2012/10/09)
3214    o pkg/shelfice
3215      - in mom_fluxform.F, mom_vecinv.F:
3216        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
3217        Bug fix KappaRU -> KappaRV
3218        does not change verification/isomip but may change other setups
3219        (presumably constant KappaRU=KappaRV)
3220      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
3221    o pkg/obcs:
3222      - fixed some indexing bugs in obcs_seaice_sponge.F
3223      - added obcs relaxation subroutines for HSALT and HSNOW
3224      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
3225    o pkg/seaice:
3226      - add "multicategory" parameterization for snow in analogy to ice,
3227        default is off for now.
3228    o pkg/obcs:
3229      - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
3230        see verification/seaice_obcs/input.seaiceSponge for example application.
3231      - remove local commom bloc "OBCS_GLOBAL" in obcs_readparms.F and do all the OB
3232        index setting by master-thread. This fix multi-threads Pb in previous modifs.
3233    o pkg/layers :
3234      - add diagnostics to pkg/layers
3235      - move the meat of pkg/layers from layers_calc.F to layers_fluxcalc.F
3236        (from R.Tulloch). Layers_calc.F now calls layers_fluxcalc.F accordingly.
3237    o pkg/generic_advdiff/gad_implicit_r.F :
3238      - fix ADVr diagnostics in case of both implicit vertical advection and diffusion.
3239    o pkg/seaice/seaice_growth.F:
3240      - fix SItflux diagnostics in virtual salt flux + balanceEmpmr case.
3241    o pkg/obcs:
3242      - change default setting of OBCS_UVICE_OLD from defined to undef;
3243      - use new parameter OB_indexNone for null index value (instead of hard-coded 0)
3244        in all pkg/obcs code and in other pkgs; remove k loop in obcs_check_depths.F;
3245      - pass OB_indexNone as (new) argument to S/R CTRL_MASK_SET_[X,Y]Z;
3246      - change OB null index value (OB_indexNone) to -99 ; this fix the problem
3247        with Southern & Western OB at a tile edge (at least in a simple set-up).
3248    o pkg/obcs:
3249      - change settings of OB index in case OB coincides with tile edge (shared by
3250        2 tiles), so that common OB location is registered by both tiles (instead of
3251        only 1). However, for Southern and Western OB, index value = 0 is not
3252        recognized as valid OB index (=default null value) and needs to be fixed.
3253      - modify accordingly OBCS_BALANCE_FLOW and OBCS_MONITOR (avoid double counting)
3254      - new parameter "OB_indexNone" for null index value (for now, still zero)
3255        to replace hard-coded null index value of zero.
3256    o pkg/exch2:
3257      - improve W2_USE_E2_SAFEMODE (faster) and W2_E2_DEBUG_ON:
3258        always check buffer-size (but outside the loop); move checking for valid
3259        index from W2_USE_E2_SAFEMODE to W2_E2_DEBUG_ON; in W2_E2_DEBUG_ON,
3260        print each tile and point connection only if |W2_printMsg|>= 2 and 3.
3261    o pkg/ctrl (pack & unpack):
3262      - in ctrl_pack.F & ctrl_unpack.F, use the same local file-name variable
3263        (locally defined) for different variables (+ remove the variable-specific
3264        file name in CTRL_GENARR.h). For now, only implemented for GENARR2/3D_CONTROL
3265        (to be extended to other local file names in ctrl.h).
3266    o pkg/flt:
3267      - add a FLT_Iter0 option (similar to PTRACERS_Iter0).
3268    o pkg/mdsio:
3269      - fix missing STOP in mdsio_readvec_loc.F (case ioUnit=0) when file is missing
3270    o tools/genmake2:
3271      - add similar dependences for target EXE_AD & EXE_FTL as we have for EXECUTABLE
3272        (added by Alistair in version 1.51 for building without make depend);
3273      - remove Header files list (H_SRC_FILES) from the dependence of targets
3274         ad_input_code.f & ftl_input_code.f (not clear why it was added in the first
3275        place in version 1.23): this save going through staf when unrelated header
3276        file has been modified.
3277       Note: for an intermediate target (e.g., ad_input_code.f or adtaf) without
3278        "make depend" step, still need to do "make links" before "make adtaf".
3279    o eesupp/src (+ few pkg src files) & genmake2:
3280      - finish to remove ALWAYS_USE_MPI in source code that TAF does not see;
3281      - no longer set ALWAYS_USE_MPI in Makefile (was done by genmake2).
3282      - improve genmake2 checking for ALLOW_${PKG} in CPP_OPTIONS.h files (distinguish
3283         upper/lower case ; account for space between "#" and undef/define)
3284    o pkg/flt (with exch2):
3285      - cleaning: fix so that it compiles; move remaining MPI calls out of flt_exch2.F;
3286      - simplify threads synchronisation; fix (many issues) multi-threaded with MPI.
3287    
3288    checkpoint63s (2012/09/05)
3289    o pkg/ecco:
3290      - remove #ifdef ALLOW_SMOOTH_CORREL3D brackets.
3291      - add more relevant #ifdef ALLOW_SMOOTH ones.
3292      - sort out useAtmWind, useSMOOTH, ctrlSmoothCorrel2D.
3293    o pkg/ctrl:
3294      - CTRL_OPTIONS.h : document CPPs related to smoothing; ALLOW_SMOOTH_CORREL2D/3D,
3295        ALLOW_CTRL_SMOOTH, ALLOW_SMOOTH_CTRL2D, ALLOW_SMOOTH_CTRL3D.
3296      - ctrl.h : document run time params doInitXX, doMainPack, doMainUnpack, doPackDiag,
3297        doSinglePrecTapelev (audodiff param!), ctrlSmoothCorrel2D (new) and
3298        ctrlSmoothCorrel3D (new).
3299        The added ctrlSmoothCorrel2D/3D replace the old ALLOW_SMOOTH_CORREL2D/3D CPP.
3300      - ctrl_readparms.F : initialise ctrlSmoothCorrel2D/3D and read from namelist.
3301      - ctrl_init.F ctrl_pack.F ctrl_unpack.F : switch off ustress/vstress
3302        controls when useAtmWind, and vice versa.
3303      - ctrl_map_ini_ecco.F : UVEL0, VVEL0, edtaux, edtauy cannot be smoothed as tracers.
3304      - ctrl_get_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL2D with
3305          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel2D, IF useSMOOTH.
3306      - ctrl_map_ini_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL3D with
3307          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel3D, IF useSMOOTH.
3308      - ctrl_set_pack_xy[z].F, ctrl_set_unpack_xy[z].F:
3309        replace ALLOW_SMOOTH_CORREL2D/3D brackets with ctrlSmoothCorrel2D/3D.
3310    o pkg/smooth:
3311      - remove un-necessary includes.
3312      - remove ALLOW_SMOOTH*D and ALLOW_SMOOTH_CORREL*D brakets.
3313        Those CPP options were never defined, and not necessary.
3314    o model/src:
3315      - fix CPP brackets in ini_mixing.F (GM_background_K belongs to gmredi).
3316      - standard treatment of useSMOOTH.
3317    o pkg/autodiff:
3318      - add LOGICAL useGGL90inAdMode, useGGL90inFwdMode, useSALT_PLUMEinAdMode,
3319        useSALT_PLUMEInFwdMode allowing to switch off ggl90 and salt_plume adjoint.
3320    o pkg/exch2:
3321      - add "if usingMPI" where it was missing (in exch2_rx?_cube*.template)
3322        + start to remove ALWAYS_USE_MPI in source code that TAF does not see.
3323      - make new S/R W2_MAP_PROCS out of w2_eeboot.F to setup exch2 CommonFlag
3324        and tiles to process mapping.
3325      - re-arrange 3 header files (W2_EXCH2_PARAMS.h, _BUFFER.h & _TOPOLOGY.h)
3326        moving /EXCH2_FILLVAL_RX/ & /W2_EXCH2_COMMFLAG/ to W2_EXCH2_TOPOLOGY.h;
3327        rename "exch2_tProc" to "W2_tileProc" and move seting of e2FillValue_RX
3328        from w2_eeboot.F to w2_readparms.F.
3329    o eesupp/src:
3330      - set exchNeedsMemsync & exchUsesBarrier according to "usingMPI" (instead of
3331        ALWAYS_USE_MPI) + moved from ini_communication_patterns.F to eeset_parms.F;
3332        also move setting of exchCollectStatistics from exch_init.F to eeset_parms.F
3333      - in eedie.F and all_proc_die.F, always call MPI_FINALIZE when ALLOW_USE_MPI
3334        is defined (remove condition on usingMPI) to match cases where MPI_INIT
3335        has been called.
3336      - fix bug I put in previous modif of exch_sm_3d_rx.template (not much used);
3337      - change default (non-MPI) value of myPid (from 1 to 0) to match MPI settings
3338        (so that on 1 proc, get same myPid independently of usingMPI)
3339      - add a stop if multi-procs but usingMPI=F ; stop also if usingMPI=T and
3340        useCubedSphereExchange with EXCH-1 (safer).
3341      - add "if usingMPI" where it was missing (+ start to remove ALWAYS_USE_MPI).
3342    o pkg/ggl90:
3343      - fix bug in filling corner mask array "mskCor" (FILL_CS_CORNER_TR_RL call)
3344        used in ALLOW_GGL90_SMOOTH code.
3345    o pkg/flt:
3346      - fix typo in FLT_WITHOUT_Y_PERIODICITY (the effect was to ignore stopping
3347        floats at the Southern end of the domain).
3348    o eesupp/inc:
3349      - add a list of CPP-options which can be set by Makefile (DEF_IN_MAKEFILE.h);
3350        but not used (and not to be used) anywhere, just for documentation.
3351    o pkg/autodiff, exf, ptracers & seaice (AD & TL output):
3352      - comment out the very nasty "writeBinaryPrec = writeStatePrec" line, since:
3353        a) can damage previously written records in any other multi-record files.
3354        b) if needed, can easily do it cleanly, by calling S/R WRITE_REC_3D_RL/S.
3355    o tools/genmake2:
3356      - define variable MAKE within Makefile and use it in place of 'make';
3357      - update AD_CONFIG.h (if needed) before building any of the executable
3358        (forward, adjoint or tangent-lin); this involves a 2nd invocation of make;
3359        and add the usual #ifndef/#define AD_CONFIG_H in AD_CONFIG.h;
3360      - always print usual warning comment 'this file is automatically generated'
3361        from script convert_cpp_cmd2defines (+ remove this warning from genmake2).
3362    o pkg/cheapaml:
3363      - updated to correspond to the code used in accepted paper (Nico Wienders).
3364    o pkg/exf:
3365        added run time switch useAtmWind to replace ALLOW_ATM_WIND cpp switch.
3366        ALLOW_ATM_WIND now just sets the useAtmWind default (see exf_readparms.F)
3367        and force defines ALLOW_BULKFORMULAE (EXF_OPTIONS.h).
3368    o pkg/exf, autodiff, ctrl, ecco and seaice:
3369        remove ALLOW_ATM_WIND brackets, or replace them with useAtmWind ones.
3370    o pkg/ctrl, ecco:
3371        allow to compile both ALLOW_U/VSTRESS_CONTROL and ALLOW_U/VWIND_CONTROL.
3372        Depending on useAtmWind, one is inactive, and the other is active (see
3373        exf_getffields.F/exf_getsurfacefluxes.F).
3374    o tools/genmake2:
3375      - improve error msg when failing in 2nd test of check_for_broken_Ff
3376      - fix option '-makefile' short-name (-mf according to genmake2 -help)
3377      - source local config file "genmake_local" just after processing the genmake2
3378        command arguments (previously done before processing arg).
3379    o pkg/grdchk:
3380      - add a call to TURNOFF_MODEL_IO for Tangent-Linear run (in this case, call
3381        to this routine from cost_final has been dropped in g_cost_final)
3382      - improve printed information (more explicit msg, no longer using "print *,"
3383         fix fcpertminus printed value).
3384    o model/src:
3385      - move call to COST_INIT_VARIA out of packages_init_variables.F directly
3386        into initialise_varia.F (just after calling PACKAGES_INIT_VARIABLES):
3387        this prevents getting cost-funct reset in adinitialise_varia recomputations.
3388    o pkg/dic:
3389      - move initialisation of "freefe" array from from dic_biotic_forcing.F to
3390        fe_chem.F: this prevents TAF from dropping this initialisation in TLM code.
3391    o pkg/grdchk:
3392      - grdchk_main.F : added CALL GLOBAL_SUM_INT( ierr , myThid )
3393      - grdchk_getadxx.F etc. : omit I/O if ierr.EQ.0
3394    o pkg/autodiff/ctrl/grdchk :
3395      - attempt to sort out what works and what does not,
3396        with regard to I/O, and to warn/stop accordingly.
3397    o pkg/grdchk:
3398      - attempt to fix grdchk in the case of useSingleCpuIO.
3399      - "if ( myProcId .EQ. grdchkwhichproc .AND. ierr .EQ. 0 )"
3400       statements were moved from grdchk_main.F and into
3401       grdchk_getadxx.F grdchk_getxx.F grdchk_setxx.F.
3402      - a global sum is applied to record numbers icvrec/layer
3403       out of grdchk_loc so that they be passed to I/O routines.
3404    o pkg/smooth:
3405      - fix recomputation that appeared with nlfs : use smooth_recip_hFacC,
3406        smooth_hFacW, smooth_hFacS (copied at init_fixed) in 3d case.
3407    o verification/testreport:
3408      - add option '-tlm' for Tangent-Linear test (-adm,-oad,-tlm are all exclusive);
3409      - can also use compressed (gzip) reference output file;
3410      - change format (in pkg/grdchk) of TLM output (+ add forward gradient)
3411        to be easier to collect by testreport.
3412      - update existing TLM output (half out-of-date by more than 3 yrs).
3413      - report NETCDF & LAPACK settings (from genmake2) in output dir.
3414      - report run-time in each individual summary (previously only for AD test);
3415        for TLM test, add also TAF version.
3416      - add daily TLM test on (old) aces cluster + weekly test on baudelaire.
3417    
3418    checkpoint63r (2012/08/15)
3419    o tools/genmake2:
3420      - fix Makefile for target ftlall (+ update files to clean after make ftlall)
3421    o pkg/ecco/ecco_cost_final.F :
3422      - fix fc print statements (to stdout and costfunction0000) so
3423        that the printed value is always after the global sum.
3424    o pkg/seaice/seaice_dynsolver.F :
3425      - fix ice strength assymptote at SEAICE_area_max<1
3426        (no change for the standard case of SEAICE_area_max=1)
3427    o some cleaning:
3428      - pkg source files: ensure that all *.F files from each pkg included the
3429        corresponding ${PKG}_OPTIONS.h file (except stand-alone src file which
3430        only includes CPP_EEOPTIONS.h); fix S/R CTRL_SMOOTH ; update AD experiment
3431        code_ad/*.F src files; add new option-file in pkg/admtlm + corresponding
3432        includes;
3433      - model/src: add PACKAGES_CONFIG.h wherever ALLOW_AUTODIFF[_TAMC] is used.
3434      - ALLOW_DIFFKR_CONTROL: add a stop in S/R CTRL_CHECK in case ALLOW_3D_DIFFKR
3435        is undef; also define /DYNVARS_DIFFKR/ common block in DYNVARS.h when
3436        ALLOW_DIFFKR_CONTROL is defined, to allow to compile and reach this stop.
3437      - update option-file CPP_OPTIONS.h of all AD experiments:
3438        * no longer include PACKAGES_CONFIG.h ;
3439        * includes ECCO_CPPOPTIONS.h if PACKAGES_CONFIG.h has been included ;
3440        * def/undef ALLOW_3D_DIFFKR independently of ALLOW_DIFFKR_CONTROL (before
3441          including ECCO_CPPOPTIONS.h).
3442    o pkg/cost, pkg/ctrl, pkg/ecco option-file:
3443      - clean-up and split content of old pkg/ecco/ECCO_CPPOPTIONS.h file into
3444        separated pkg option-file (done according to old doc from ECCO_CPPOPTIONS.h,
3445        not necessary accurate).
3446      - add a template for option-file ECCO_CPPOPTIONS.h, mostly empty, in
3447        pkg/autodiff, i.e., the 1rst pkg to compile for adjoint built, with lines to
3448        deliberately break compilation (a remainder that it needs to be customized)
3449      - in pkg/ecco, includes ECCO_OPTIONS.h instead of COST_OPTIONS.h
3450      - rename COST_CPPOPTIONS.h to COST_OPTIONS.h
3451      - rename CTRL_CPPOPTIONS.h to CTRL_OPTIONS.h
3452    o tools/genamke2:
3453      - check for lapack.
3454    o pkg/cost and pkg/ecco : attempt to sort out some of the limiting intricacies.
3455      - pkg/cost.cost_final.F : allow for use of pkg/ecco and pkg/cost cost functions
3456        jointly. The exclusive ifdefs were removed, to add costs terms (when defined)
3457        from both packages.
3458      - the fc global sum in pkg/ecco/ecco_cost_final.F was removed accordingly.
3459      - for objf_atl we use either the pkg/ecco or the pkg/cost term depending on CPPs.
3460      - pkg/ecco and model/src : add CPP brackets around pkg/cost and pkg/ctrl includes
3461        of "CTRL_SIZE.h" "ctrl.h" "ctrl_dummy.h" "optim.h" / "cost.h" accordingly.
3462    o pkg/cost : add comments to explain special and/or untested setups.
3463    o pkg/exf:
3464      - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h
3465        (previously, ALLOW_AUTODIFF_TAMC was controling this switch).
3466    o verification/*/code_ad:
3467      mimimal cleaning of AD experiments ECCO_CPPOPTIONS.h option-file:
3468      - reccord when this file is included (define ECCO_CPPOPTIONS_H)
3469      - remove the most obvious obsolete features (e.g., #define ALLOW_COST not
3470        allowed since Oct 2003 in any option-file except in PACKAGES_CONFIG.h)
3471    o pkg/seaice :
3472      - added possibility to change ice strength/PRESS0 relationship to
3473        HEFF, according to the following run time parameters
3474        SEAICEpresPow0 :: HEFF exponent for ice strength below SEAICEpresH0 (integer, >0)
3475        SEAICEpresPow1 :: HEFF exponent for ice strength above SEAICEpresH0 (integer, >0)
3476        SEAICEpresH0   :: HEFF threshold for ice strength            (m)
3477    o pkg/ggl90 :
3478      - added run time flag mxlSurfFlag to include the code that ensure
3479        mixing between first and second level (previously included as a comment)
3480    o verification/1D_ocean_ice_column/input_ad/data.autodiff :
3481      - add test of newly added dumpAdByRec=T option where
3482        we write all records to one file per variable.
3483    o verification/global_ocean.cs32x15/code_ad/CPP_OPTIONS.h :
3484      - switch to #define ALLOW_BALANCE_RELAX and ALLOW_BALANCE_FLUXES
3485        to check that this code is ok with taf and compiles in adjoint.
3486    o pkg/autodiff :
3487      - added run time param dumpAdByRec : ad dump format switch.
3488        If true then write all records to one file per variable.
3489        Else write one file per record (remains the default).
3490      - revise seaice_ad_dump.F and exf_adjoint_snapshots_ad.F accordingly.
3491    o pkg/seaice:
3492     - Added SEAICEuseTILT run time switch : if set to
3493       false then omit the tilt term in seaice dynamics.
3494     - Fix free drift calculation.
3495    o pkg/shelfice:
3496      When initializing SHELFICEDragQuadratic, set default to be
3497      consistent with shiCdrag in case SHELFICEuseGammaFrict is used,
3498      but retain option to set it independently
3499      (inconsistenty spotted by Veronique Dansereau)
3500    o eesupp/inc:
3501      - in EEPARAMS.h, add real-type constant for some frequently used simple number
3502         (0,1,2,1/2), with name explicitly referring to RS/RL type.
3503    o model/src:
3504      - move balancing of relaxation terms to new S/R balance_relax.F.
3505    o pkg/autodiff:
3506      re-write active I/O high-level (control) S/R:
3507      - rename  S/R ACTIVE_READ/WRITE_RL to ACTIVE_READ/WRITE_3D_RL
3508      - add 1 more argument (useCurrentDir) to replace the "_LOC" 2nd set of S/R.
3509      - use standard pkg/mdsio I/O routines (MDS_READ/WRITE_SEC_XZ/YZ  and
3510        MDS_READ/WRITE_FIELD); change loops to multi-threads.
3511      - update and merge active_file_control_slice.flow into active_file_control.flow
3512      - update the calls in lower level S/R (active_file.F, active_file_g.F and
3513        active_file_ad.F) keeping the argument list and function unchanged.
3514      - also update lower-level "_LOC" version (call same S/R with "useCurrentDir
3515        =.TRUE.") and remove high-level (control) _loc version (not called anymore).
3516      - new low-level active I/O routines, one for each type (RL/RS), for active var
3517        of various (XY,XZ,YZ) shape and level number (arguments: arrShape, myNr);
3518        fix ctrl_init_wet.F & ecco_cost_weights.F by calling the new S/R with the
3519        right type.
3520    o autodiff and RS=real*4:
3521      - call the right type (_RS instead of _RL) of S/R in few output S/R (pkg/exf
3522        ad-monitor and snapshots); disable arrType='RS' in mdsio_gl*.F ;
3523      - change argument type of 3-D mask argument to _RS to match type in the call
3524        (in seaice_cost*.F, ctrl_*_gen.F and *ctrl_bound.F); to be continued.
3525    o pkg/thsice:
3526      - re-anable balanceEmPmR when useSEAICE=T with useThSIce=T.
3527      - option to correct ocean fresh-water flux for imbalance of Atmos+Land
3528        fresh-water flux: uniform correction or proportional to local precip.
3529    o pkg/ctrl:
3530      - new header file CTRL_SIZE.h for parameters maxCtrlArr2D, maxCtrlArr3D
3531      - redefine CPP option ALLOW_BOTTOMDRAG_CONTROL to
3532                            ALLOW_BOTTOMDRAG_CONTROL_NONGENERIC
3533      - verification/hs94.1x64x5/ tests ALLOW_GENARR{2D,3D}_CONTROL
3534    
3535    checkpoint63q (2012/07/30)
3536    o pkg/autodiff:
3537      note about monitor and snap-shot of ad-variables:
3538      a) need to apply ADEXCH before monitor or output of ad-vars to include
3539       overlap contributions (was done for adjDump but missing for monitor).
3540      b) since ADEXCH implies adding overlap values to interior array, machine
3541       truncation error is expected when adding an ADEXCH call in the middle of
3542       the time-stepping (although mathematically identical).
3543      modifs:
3544      - fix some incorrect type (RL/RS, UV/scalar) in ADEXCH calls and ad-vars
3545        declaration (adEddyPsiX,adEddyPsiY in adcommon.h).
3546      - add new run-time params (dumpAdVarExch & mon_AdVarExch) to select how  to
3547        apply ADEXCH before monitor or snap-shot of ad-variables:
3548           =0 : no ADEXCH ; =1 : do ADEXCH ; =2 : apply ADEXCH on a local copy.
3549      - implement new method (copy+adexch) for snap-shot and monitor of main model
3550        ad-vars (initially not used by default -> output unchanged).
3551      - change default (set to 2) to use new method and update few output_adm.txt
3552        with accurate ad-monitor (global_ocean.90x40x15, tutorial_global_oce_biogeo
3553        and both tutorial_tracer_adjsens tests).
3554      - switch 2 global_ocean.cs32x15 AD-tests to AB-2 (seaice_dynmix & thsice)
3555        and turn off momDissip_In_AB in the 2 other (needed for stable AB-3).
3556    o pkg/ctrl:
3557      enable the use of a variable number (maxCtrlArr2D, maxCtrlArr3D) of
3558      generic control variables via
3559      #define ALLOW_GENARR2D_CONTROL and/or #define ALLOW_GENARR3D_CONTROL
3560      Only required customization should be S/R ctrl_map_ini_genarr.F
3561      (routine in repository contains example)
3562    o pkg/exf:
3563      - fix and refine checking of surface-relaxation setting when using EXF
3564    o verification (adjoint exp):
3565      - reduce length of simulation by half for experiment global_ocean.cs32x15
3566        (std, seaice & seaice_dynmix) and exp tutorial_dic_adjoffline; update output.
3567    o pkg/mom_common (mom_u/v_bottomdrag), pkg/shelfice (shelfice_u/v_drag)
3568      - replace if statements KE.ne.0 with KE.gt.0 to avoid sqrt of negative numbers
3569        of KE that can occur with aggressive optimization
3570      + put quadratic bottom drag calculation in separated loops (only done if
3571        using bottomDragQuadratic)
3572    o model/src: CG2D_NSA
3573      - clean-up:  stop if cg2dNormaliseRHS=T and AUTODIFF
3574         and replace GLOBAL_SUM calls with GLOBAL_SUM_TILE.
3575      - in test-exp that uses CG2D_NSA (bottom_ctrl & tutorial_tracer_adjsens),
3576         change cg2d residual target to be expressed in Wunits (=> do not normalise
3577         RHS ; this fix global_max Pb with TAF); update output.
3578    o verification/tutorial_tracer_adjsens:
3579       improve parameter consistency (and get rid of warnings):
3580       - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
3581       - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
3582       - use staggerTimeStep (for stability) in som81; use default rotation period.
3583    o pkg/exch2:
3584      - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
3585        reset to 0 = 1 long line in X)
3586    o pkg/mdsio:
3587      - fix reading of dimensions from meta file for large-size domain
3588    o model/src:
3589      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
3590      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
3591        Cubed-Sphere Exch with CS-corners inside the domain;
3592        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
3593        globalArea and to set hasWetCSCorners.
3594      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
3595        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
3596      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
3597        useCDscheme and useCubedSphereExchange).
3598    o pkg/seaice/seaice_growth.F :
3599      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
3600        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
3601        when the previous code was not correct.
3602      - in all cases diagnoze the boundary condition mismatch to SIaaflux
3603      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
3604        that term to QNET (essentially to set the melt/freeze water to 0degC).
3605        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
3606    o verification/global_ocean.cs32x15/input.seaice :
3607      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
3608      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
3609      - update results (output.seaice.txt) accordingly.
3610    o verification/lab_sea/input/data.seaice :
3611      - remove SEAICEheatConsFix, which is now be tested
3612        in global_ocean.cs32x15. The presently coded fix
3613        is only consistent with real fresh water + nlfs.
3614      - update results (output.txt) accordingly.
3615    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
3616    o AD_CONFIG.h file:
3617      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
3618      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
3619        add it explicitly in each fortran src file where it is needed.
3620        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
3621        thus introducing potentially wrong dependency; therefore, better to include
3622        it only where it's really needed, and after any other included OPTIONS file
3623        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
3624        or ALLOW_TANGENTLINEAR_RUN).
3625    
3626    checkpoint63p (2012/07/06)
3627    o pkg/autodiff:
3628      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
3629      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
3630        which are now read from new parameter file "data.autodiff" (inAdExact
3631        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
3632      - add file "data.autodiff" in all verification/*/input_ad/ directories.
3633      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
3634        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
3635    o verification/tutorial_tracer_adjsens/
3636      - add extra sub-verification which uses "SOM" advection scheme
3637        (2nd Order-Moment Advection Scheme, Prather Limiter) with
3638          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
3639        and in data:
3640          multiDimAdvection=.TRUE.,
3641          tempAdvScheme=81,
3642          saltAdvScheme=81,
3643    o model/src:
3644      - introduce ALLOW_BALANCE_RELAX which allow the removal
3645       of the global mean of relaxation terms by setting
3646       balanceThetaClimRelax and balanceSaltClimRelax
3647      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
3648       This case is now treated appropriately in seaice_growth.F
3649    o pkg/seaice:
3650      - do balanceEmPmR and balanceQnet based on the net fluxes
3651        (SItflux) that enter the ocean+ice system rather than QNET
3652        and EMPMR. Works best in real fresh water.
3653      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
3654        out of the diagnotics bloc, and stored in global arrays.
3655    
3656    checkpoint63o (2012/06/29)
3657    o vertical mixing schemes:
3658      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
3659      - replace computation of density (in Function STATE1, opps_calc.F) by a call
3660        to S/R FIND_RHO_SCALAR
3661      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
3662        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
3663        affects output (vermix.ggl90) at truncation level.
3664    o testreport:
3665      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
3666        (nSx,nSy) for the number of threads (from eedata.mth)
3667    o model/src:
3668      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
3669        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
3670    o verification/tutorial_tracer_adjsens/
3671      - compile with ALLOW_CG2D_NSA
3672      - run with nonlinFreeSurf=3
3673      - update reference output_adm.txt
3674    o tools/genmake2:
3675      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
3676        refine usePROFILES switching off (only when NetCDF is not available).
3677    o verification (atmospheric set-up):
3678      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
3679    o pkg/profiles : refine profiles and files handling.
3680    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
3681    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
3682      - changes to use model/src/the_main_loop.F rather than the ecco version
3683        in ecco type adjoint runs.
3684    o model/src:
3685      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
3686      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
3687      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
3688    o model/src:
3689      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
3690        update output of test experiment bottom_ctrl_5x5.
3691    o pkg/generic_advdiff:
3692      - implement vertical bi-harmonic diffusion (for now, only for T & S and
3693        only explicitly).
3694    o verification/bottom_ctrl_5x5/
3695      update reference output (results changed quite some time ago,
3696      not sure when; but new reference results look ok in terms of grdchk)
3697    o verification/1D_ocean_ice_column/
3698      For verification purposes, the exact adjoint rather than an approx.
3699      should be used (e.g., to comare against F.D. or TLM).
3700      removed autodiff_inadmode*_ad.F routines in code_ad/
3701      Update results/ accordingly.
3702    o pkg/cal:
3703      - change cal_getdate.F so that output date is function of input time only
3704        (less ambiguous, not mixed up with input iteration number).
3705      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
3706    o pkg/diagnostics:
3707      - implement calendarDumps also for stats-diags
3708      - implement calendarDumps also for snap-shot output (negative freq)
3709      - for now, ignores calendarDumps if non-zero phase-lag.
3710    
3711    checkpoint63n (2012/06/04)
3712    o model/src:
3713      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
3714        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
3715      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
3716        similar to calc_r_star.F); update results of experiment internal_wave and
3717        tutorial_global_oce_in_p (affected @ truncation level).
3718    o pkg/shelfice:
3719      - add parameterisation of advective-diffusive flux into the ice shelf
3720        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
3721      - simply eps3/3a computation
3722    o eesupp:
3723     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
3724       between tiles, just fill-in edges assuming locally periodic subdomain) and
3725       add corresponding exchange subroutines (EXCH0);
3726     - new CG-solver version (_EX0) for disconnected-tiles special case.
3727    o model/src (CG-solvers):
3728     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
3729       (similar final residual output and max-Iter number as with standard version);
3730     - allows to store and use lowest-residual solution (standard & _SR versions);
3731     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
3732     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
3733    o eesup/src:
3734     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
3735       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
3736    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
3737    
3738    checkpoint63m (2012/04/27)
3739    o pkg/shelfice:
3740     - account for partical cells in surface level below ice-shelf for hydrostatic
3741       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
3742    o ad test experiments:
3743     - update and rename to "ad_optfile.local" local AD-optfile specific to a
3744       particular adjoint verification experiment (in verification/*/code_ad/)
3745    o pkg/seaice & pkg/exf:
3746     - Part two of ECCO-CLIVAR code merges.
3747       Completes merge of seaice area relax. code.
3748       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
3749       to be set in EXF_OPTIONS.h since this pkg controls its I/O
3750       (and avoids second CPP option in SEAICE_OPTIONS.h)
3751     - change default value of costIceStart & costIceEnd to a valid date.
3752     - add snowPrecip to HSNOW in seaice_growth
3753    o pkg/ptracers:
3754     - move ptracers summary and setup check into separated S/R ; add a check for
3755       valid PTRACERS_Iter0 value (error+stop or just warning).
3756    o pkg/cal (+ pkg/ecco):
3757     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
3758       as input; and for AD, unless both are not differentiable (e.g., k index)).
3759    o model/src:
3760     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
3761       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
3762       temporary set to usingZCoords value (to be changed to F when using shelfice).
3763     - hydrostatic pressure: implement partial cell near the surface also for
3764       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
3765       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
3766    o pkg/ctrl/ctrl_init.F:
3767     - add a formal parameter to s/r ctrl_init_rec to print
3768       xx_$(ctrl_valiable)_file for easier debugging
3769     - move call of cal_* routines into the if-block where they are really
3770       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
3771       to specify a startdate
3772    o pkg/seaice:
3773     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
3774       global_ocean.cs32x15/code versions).
3775     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
3776       verification experiment global_ocean.cs32x15.seaice and update results.
3777    o pkg/exf:
3778     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
3779       (according to useExfYearlyFields).
3780    o pkg/cal:
3781     - move calendar setting & summary (previously in cal_readparams.F) into new
3782       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
3783       length of the simulation is set (after SET_PARMS call); This is an attempt
3784       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
3785     - For safety: keep a record of pkg/cal parameter settings status
3786               to allow to STOP if one pkg/cal S/R is called too early.
3787     - add a stop in all basic pkg/cal subroutines if called before setting is done.
3788     - modify cal_getdate.F: stop when nothing was returned;
3789       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
3790       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
3791    
3792    checkpoint63l (2012/04/04)
3793    o pkg/bbl:
3794      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
3795        update global_with_exf output.yearly.txt file.
3796    o pkg/cal:
3797      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
3798      - remove 2 unsused and very short (1 line only) functions ;
3799      - remove unsused subroutines from AD-Diff list.
3800    o model/src:
3801      - start to implement clean wait to stop in initialization S/R (config_check.F,
3802         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
3803    o folowing PRINT_MESSAGE changes:
3804      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
3805    o pkg/bbl:
3806      - modification so it can work with z*
3807      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
3808      - global_with_exf/input.yearly verification; changes output.yearly.txt
3809    o eesupp/src:
3810      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
3811        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
3812      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
3813        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
3814      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
3815      - when using MPI, always set usingMPI=T ; set default accordingly and stop
3816        if not consistent.
3817      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
3818        argument is zero (in case called within single-thread section).
3819    o pkg/fizhi:
3820        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
3821        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
3822    o pkg/exch2:
3823      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
3824        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
3825      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
3826        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
3827        with bad ones coming from a not-yet-updated halo.
3828        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
3829    o pkg/frazil:
3830        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
3831        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
3832    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
3833    o verification/lab_sea
3834      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
3835      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
3836      * nTimeSteps 3 -> 4
3837      * changed reference output accordingly
3838    o pkg/ctrl:
3839      * fix ctrl_get_gen for xx_sst, xx_sss
3840    o pkg/fizhi:
3841      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
3842        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
3843      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
3844        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
3845        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
3846    o pkg/gmredi:
3847      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
3848    o pkg/fizhi:
3849      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
3850        (old)aces open64 tuv test.
3851    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
3852    o pkg/mom_vecinv:
3853      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
3854        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
3855        with non-lin free-surf).
3856    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
3857      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
3858      some compilers (gfortran 4.6.0 on MacOS)
3859    o momentum:
3860      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
3861        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
3862        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
3863    
3864    checkpoint63k (2012/03/17)
3865    o model/src:
3866       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
3867         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
3868       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
3869         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
3870    o model/src: solve_*diagonal.F
3871       - replace division with multiplication by inverse (similar to original version)
3872         update output of AD exp. global_ocean.90x40x15.
3873       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
3874         to enable the use of the vectorized & differentiable solve_tridiagonal.F
3875       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
3876         vertical advection (to get solve_tridiagonal tested in AD mode).
3877    o pkg/seaice: ECCO-CLIVAR merge:
3878      1. seaice AREA relaxation
3879         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
3880         * runtime flag: SEAICE_tauAreaObsRelax
3881      2. modified global mean cost imbalance code: CPP option
3882          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
3883    o another iteration on solve_*diagonal.F
3884       Make choices independent of AUTODIFF
3885       Default will be the adjoinable vectorized version.
3886       Alternative choices are:
3887       * non-adjoinable original version with low memory footprint:
3888         #define SOLVE_DIAGONAL_LOWMEMORY
3889       * still adjoinable but does not vectorize (k as inner-most loop):
3890         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
3891    o testreport
3892     - add option to use a home made wrapper around "make"
3893     - remove MITGCM_IEEE env. variable (no longer active)
3894    o pkg/shelfice
3895     - improve computation of friction velocity for velocity dependent
3896       exchange coefficients: include velocities into SHELFICEBoundaryLayer
3897       block to average velocities vertically
3898     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
3899    o Modify diagonal solvers, now three versions (upon request):
3900      #ifndef SOLVE_DIAGONAL_AUTODIFF
3901        1. default version (dating back a while ago)
3902      #else /* def SOLVE_DIAGONAL_AUTODIFF */
3903      # ifdef SOLVE_DIAGONAL_KINNER
3904        2. adjoinable version with k-innermost loop (G. Forget)
3905      # else
3906        3. adjoinable vectorized version of 2.
3907      # endif
3908      #endif /* SOLVE_DIAGONAL_AUTODIFF */
3909      All flags are currently set within routines, but could/should be moved to CPP-options.
3910      Array bounds for 1. are as before, for 2.,3. cover the entire domain
3911      (could be changed for 1. too).
3912    o verification/lab_sea (fwd):
3913      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
3914        use 7 categories (except hb87), new solve4temp params (except salt_plume),
3915        constant salinity (=4) or variable salinity (salt_plume) done through
3916        SItracer.
3917    o pkg/seaice:
3918      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
3919      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
3920         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
3921        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
3922        SEAICE_freeze got retired) but already better than previously with
3923        SEAICE_freeze=123456.7 deg.C;
3924      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
3925        (safer multi-threaded setting); always set SEAICEuseEVP;
3926      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
3927        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
3928        stop if multiple specifications for the same coeff; make sure default
3929        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
3930    o pkg/obcs:
3931      - allow to switch to upwind 1rst order advection scheme for the advective
3932        flux computation at the open-boundary; disabled for adjoint built.
3933    o pkg/ptracers:
3934      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
3935      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
3936      - add parameter to decide when to start a tracer; use internal flag to
3937        know which tracer to step-forward; switch this internal flag at the top
3938        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
3939        for adjoint built.
3940    o pkg/seaice:
3941      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
3942      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
3943      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
3944    o pkg/ecco:
3945      - fix writing of output file DiagnosCost_ClimSalt/Theta
3946        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
3947    o pkg/seaice:
3948      - add missing initialisation of COR_ICE array in dynsolver.F
3949      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
3950        compiled either way, and is tested in all exps (multidim was only tested
3951        in lab_sea ad before).
3952      - cosmetic change to prepare for future addition of ITD. no change to results.
3953        no defaults change.
3954      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
3955      - by lack of adequate verification experiments, I further used custom versions
3956        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
3957        should be correct.
3958      - avoid recomputations in ad.
3959    o array initialisation in adjoint mode:
3960      1) pkg/mom_common/mom_calc_ke.F:
3961        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
3962        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
3963        part this initialisation is gone, resulting in Floating Point Exception
3964        (caught by open64 compiler with debug option).
3965      2) model/src/convective_weights.F
3966        set output convectCount over the full array range (instead of doing
3967        an update): this fix a similar issue when called within recomputation (adjoint)
3968        which could by-pass the initialisation (normally done in the caller S/R).
3969    o pkg/seaice:
3970      - final version of turbulent flux params, as agreed at MIT ice meet:
3971           SEAICE_mcPheePiston (default is ~ 0.000875)
3972           SEAICE_mcPheeTaper (default is 0.)
3973           SEAICE_frazilFrac (defualt is 1.)
3974           SEAICE_mcPheeStepFunc (default is false)
3975      - changes results at trunction error level
3976      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
3977    o added pkg/frazil:
3978      - see frazil_description.tex for details
3979      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
3980    o pkg/shelfice/shelfice_thermodynamics.F
3981      - fix exponents for velocity dependent exchange coefficients: change
3982        from 2/3(=0) to 0.66666666666666667
3983      - move computation of velocity dependent exchange coefficients into
3984        separate loop, so that it applies to both thermodynamics
3985      - move some divisions by constants out of loops
3986    
3987    checkpoint63j (2012/02/16)
3988    o pkg/seaice:
3989      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
3990      - SItracer:  added run time params, and allow coupling to ocn salinity.
3991    o pkg/seaice: remove (almost) all divisions by constants within loops
3992      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
3993      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
3994      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
3995      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
3996    o pkg/seaice :
3997      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
3998        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
3999      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
4000      - add permanent SItflux diag that corresponds to TFLUX but includes
4001        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
4002      - allow activation/testing of a fix for suspected missing term in
4003        ocn-ice heat budget (to be confirmed). To test this, you want to
4004        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
4005        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
4006      - no change in results, fwd or ad.
4007    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
4008      - switch to variable freezing point.
4009           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
4010      - bug fix : the sublimation term that was missing is now activated.
4011           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
4012      - bug fix : flooding sign term for SIsal0.NE.0.
4013           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
4014    o pkg/seaice:
4015      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
4016        is now the default, and the old default constant freezing point is recovered
4017        with SEAICE_tempFrz0    = -1.96,
4018             SEAICE_dTempFrz_dS = 0.,
4019      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
4020      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
4021      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
4022        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
4023      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
4024        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
4025      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
4026        seaice_growth r149 for legacy branch (no results change).
4027      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
4028        from I. Fenty).
4029      - results did not change except for global_ocean.cs32x15, mostly due to the
4030        switch to variable freezing point (see above item for detail).
4031    o pkg/thsice:
4032      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
4033        seawater freezing in thsice_calc_thickn (not used).
4034    o pkg/seaice: turbulent flux term specification via run time params.
4035      - replace CPP switches with run time switches to facilitate testing
4036      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
4037                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
4038      - added runtime parameter : SEAICEturbFluxFormula
4039      - move Mcphee constants to SEAICE_PARAMS.h
4040      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
4041                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
4042                 remove seaice_summary call (moved to seaice_init_fixed)
4043      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
4044        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
4045      - seaice_summary.F : add missing report of read turbulent flux term set up
4046                           and SITRACER.
4047      - seaice_check.F : check range; inform and stop if retired CPPs are used
4048                         (incl. SEAICE_AGE).
4049      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
4050             CPP switch, same computation as before for the different options.
4051      - change results at the truncation level.
4052    o pkg/seaice:
4053      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
4054        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
4055        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
4056      - update verification/*/input*/data.seaice:
4057        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
4058        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
4059        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
4060        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
4061    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
4062      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
4063        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
4064        difference in results only due to machine truncation.
4065      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
4066        MaykutPolySatVap; keep MIN_LWDOWN.
4067      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
4068      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
4069        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
4070    o pkg/salt_plume:
4071      - isolate saltPlumeFlux array exch into a specific S/R called from
4072        do_oceanic_phys.F
4073      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
4074    o verification:
4075      - move untested set-up to MITgcm_contrib/verification_other.
4076    o pkg/seaice:
4077      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
4078    o pkg/seaice:
4079      - seaice_solve4temp.F (keeping results unchanged):
4080        * add 2 future run-time params to select which saturation vapor pressure
4081          formula is used and how post-iteration fluxes are set.
4082          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
4083        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
4084          the linearized expression to stay consistent with tsurf finding.
4085      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
4086        can be < 0.
4087    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
4088      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
4089        conductive heat flux F_c , and add it explicitly when updating tsurf as
4090        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
4091        so that now F_ia has a consistent meaning through the entire routine.
4092        This causes differences at truncation level: update output of fwd exp.
4093        global_ocean.cs32x15.seaice.
4094    o pkg/seaice:
4095      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
4096        of arrays, sign/direction of fluxes; no effect on results.
4097      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
4098        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
4099        note: this should have been done before changing celsius2K default.
4100      - to keep results unchanged, add back old value of celsius2K in verification
4101        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
4102      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
4103        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
4104        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
4105        freezing temp is consistent with value in seaice_growth.F ; this causes
4106        differences at machine truncation level: update lab_sea AD output (3/4).
4107    o pkg/seaice:
4108      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
4109        and climsst/sss even when using seaice (to prevent calculation that might
4110        use SST on land); does not affect any verification exp.
4111      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
4112        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
4113    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
4114      over land (non-legacy code)
4115    o vectorize salt_plume package:
4116      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
4117      - this code computes plumebk everywhere (also over land), thus requires
4118        code to avoid divisions by zero and catch the case of kLev=Nr.
4119      - efficiency of salt_plume_frac is still sub-optimal
4120    o tools (genmake2):
4121      - fix makefile NAME specification (option: -makefile NAME) by adding
4122        "-f $MAKEFILE" in few places where it was missing including makedepend
4123        command (contribution from Paul).
4124    
4125    checkpoint63i (2012/01/24)
4126    o model/src:
4127      - add factorized versions of some EOS code to find_rho.F,
4128        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
4129    o model/src:
4130      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
4131      - change default celsius2K from 273.16 to 273.15
4132      - to keep results unchanged, add back old value of celsius2K in verification
4133        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
4134         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
4135    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
4136      to make TAF generate vectorizable code
4137    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
4138       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
4139       have flags that do this more efficiently.
4140    o pkg/diagnostics/diagstats_calc.F
4141      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
4142    o pkg/obcs (with exch2):
4143      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
4144        and remove code (in obcs_readparms.F) which was based on EXCH of indices
4145        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
4146    o pkg/exf and seaice exp:
4147      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
4148        so that switching off area & heff advection flags does not affect results.
4149      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
4150      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
4151        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
4152        results of verification experiments: 1D_ocean_ice_column(fwd),
4153        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
4154        and offline_exf_seaice (all 4).
4155    o pkg/seaice:
4156      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
4157        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
4158      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
4159        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
4160        not multi-dim advection;
4161      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
4162        SHORTWAVE_HEATING #undef.
4163    o optim: make Makefile more robust (?)
4164    o pkg/obcs:
4165      * fix treatment of obcs_read_pickup for TAF
4166    o pkg/shelfice:
4167      * add missing initialisation of num_shifwflx
4168      * new adjoint verification exp. for isomip
4169      * change Prandtl and Schmidt numbers from generic formulations
4170        (in terms of model diffus. and visc.) to separate runtime
4171        parameters, with Holland and Jenkins (1999) default values.
4172    o pkg/exf (interpolation):
4173      - extended input field (2 rows) near the N & S poles:
4174        * fill in with the symetric value (when even Nb of data in longitude)
4175        * add average value at the poles only for scalar quantities ; for vector
4176          component interpolation, skip the averaging and keep duplicated values,
4177          unless the 2 components have same location (uvInterp=T) in which case
4178          interpolate the 2 components together using S/R EXF_INTERP_UV.
4179      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
4180        together: this allows to account properly for local orientation when
4181        averaging at N & S pole.
4182      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
4183        exf-interpolation near N & S poles. Undef by default.
4184      - add debug check/print on 1rst iter if debugLevel >=2.
4185    o pkg/exf:
4186      - change masking flags definition (no longer "parameter"), put them in
4187        common block and set them in S/R EXF_INIT_FIXED.
4188      - change recognized masking flag from s,u,v to c,w,s since the mask
4189        to use (maskC,W,S) depends on position on model grid and has little to
4190        do with scalar/vector difference; fix masking if using P-coordinates.
4191      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
4192        and update results of exp. global_with_exf (x2).
4193      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
4194    o pkg/obcs
4195      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
4196    o pkg/exf (interpolation):
4197      - assume periodicity in X only if input field cover full longitude range.
4198      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
4199        and should vectorise).
4200      - fix input lat of the 2 added row (in case we provide N.pole data).
4201    
4202    checkpoint63h (2011/12/30)
4203    o pkg/seaice:
4204      - change declaration of UVM from _RL to _RS in order to get B-grid
4205        uIce,vIce monitor when _RS = real*4
4206    o pkg/offline:
4207      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
4208      - compute vertical velocity if not read from file (switch on exactConserv
4209        & staggerTimeStep);
4210      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
4211    o verification:
4212      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
4213        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
4214        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
4215      - update output of exp. global_ocean.cs32x15.viscA4 after changing
4216        grid-file angles (used here for coriolis-3d);
4217      - remove (or gzip) few files not needed to run fizhi-cs experiments.
4218    o pkg/exf (vector interpolation):
4219      - rotate vector component toward local grid-axis orientation using grid-angles
4220        (stored in GRID.h) instead of locally computed rotation angle; keep old code
4221        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
4222    o pkg/seaice:
4223      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
4224        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
4225    o pkg/PKG_OPTIONS.h files:
4226      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
4227        outside of the #ifdef ALLOW_THISPKG / #endif block.
4228      - update verification/*/code/PKG_OPTIONS.h files.
4229    o add a verification experiment (offline_exf_seaice/input.seaice) that test
4230      the B-grid LSOR solver
4231    o pkg/seaice: sort out emissivity and long wave radiation step 2:
4232      - add emissivity for snow and ice as new run-time parameters
4233        (unfortunately) that default to the corresponding exf values; this
4234        changes results in most verification experiments so that for backward
4235        compatibility these parameter have to be set explicitly to inconsistent
4236        values (ugly);
4237      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
4238        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
4239        until we agree how to handle this bug properly
4240    o pkg/exf (interpolation):
4241      - add a set of run-time param ({inputfield}_interpMethod), one for
4242        each interpolated input field, to select the interpolation method
4243        with a value of zero switching off the interpolation;
4244      - print interpolation parameters to standard output;
4245      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
4246        (to use instead runoff_interpMethod=0 in data.exf).
4247      - simplify default setting of interpolation parameters (for all fields,
4248        set position to match model grid cell-center position, leading to trivial
4249        interpolation in case of regular Lat-Lon grid) and fix for the case of
4250        non-uniform delY.
4251    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
4252       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
4253       this factor is absolutely required, because the lw exitance (= out-going
4254       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
4255       where the reflectivity rho = 1-emissivity for conservation reasons. Once
4256       this is established, we can remove the CPP-Flag (if we want to).
4257    o pkg/seaice:
4258      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
4259        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
4260      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
4261        what the name implies (and not emissivity*BoltzmannConstant), this means
4262        the old default value of 5.5e-8 now means
4263        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
4264        S/R exf_readparms
4265      - FV-discretization of the B-grid LSOR solver, turn on with
4266        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
4267        of the calling routine dynsolver, so that B and C-grid code look a
4268        little more alike.
4269      - fix index bugs in ostres.F (B-grid code)
4270    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
4271    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
4272      default for SEAICE_emissivity, if useEXF; requires setting a wrong
4273      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
4274      backward compatiblity
4275    o model/src: use sigmaR in calc_ivdc
4276    
4277    checkpoint63g (2011/12/16)
4278    o pkg/seaice/seaice_growth.F:
4279      fix heat conservation of the coupled ocean-seaice system.
4280      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
4281      solid vs liquid water treatment is resolved via QNET.
4282    o pkg/seaice/seaice_growth.F:
4283      add missing term for sublimation in saltFlux, which was breaking conservation.
4284    o pkg/seaice/seaice_model.F:
4285      Remove this patholigical case treatment in evolution branch,
4286      where it is un-necessary and breaks conservation.
4287      Update global_ocean.cs32x15/results accordingly for
4288      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
4289    o model/src:
4290      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
4291      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
4292    o pkg/obcs:
4293      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
4294      tendency for temperature and salinity that is then applied to update
4295      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
4296      horizontal advection and diffusion contributions on the boundary (in
4297      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
4298      removing the mask in S/R timestep_tracer. The advantage of this approach is
4299      that the updated tracer values include contributions from the surface
4300      forcing and vertical diffusion.
4301      This modification changes exp4.stevens because of vertical diffusion.
4302    o model/src:
4303      change non-curvilinear grid setting to also work with exch2 + blank tiles:
4304      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
4305        face dimensions.
4306      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
4307        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
4308        and INI_SPHERICAL_POLAR_GRID.
4309      change test-experiment global_ocean.90x40x15:
4310      - split the domain in many more tiles (9x4 tiles of 10x10 each);
4311      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
4312      - update results of both test (std & dwnslp).
4313    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
4314       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
4315    o model/src:
4316      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
4317        and fix initialisation when using sigma-coords.
4318    o model/src:
4319     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
4320       to their current value at the beginning of forward_step.F": add a new run-time
4321       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
4322     - set doResetHFactors=T in the following test exp:
4323        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
4324        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
4325        and tutorial_global_oce_in_p (nonLinFS in p)
4326    o pkg/ecco
4327      - added IES cost term
4328    o verification/advect_xz
4329      - scale down the depth by 1/100 (from 200 km to just 2.km)
4330      - add secondary test using divergent flow, r-star and implicit vertical advection.
4331      - add note (check_conserve_TS.txt) and matlab script to check global
4332        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
4333    o pkg/rbcs:
4334      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
4335    o pkg/obcs (Stevens BCs):
4336      - fix various problems in the phase speed computations of the Stevens
4337        boundary conditions:
4338        - sign error for western and southern boundaries,
4339        - time tendencies were underestimated by factor of dTracerLev and some just
4340          zero (for multidim advection schemes) -> now estimate time tendencies
4341          from difference between previous (n) time level and the one before (n-1);
4342          this requires storing a field per tracer per boundary, also in the pickup
4343          files.
4344        - replace deltaTmom in cflMer/Zon computation with dTracerLev
4345        - set default phase velocity to cflMer/Zon
4346      - update verification experiment exp4.stevens
4347    o pkg/generic_advdiff (implicit_r):
4348      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
4349        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
4350      - fix implicit vertical diffusion or advection with NonLin FreeSurf
4351        (was using current recip_hFacC instead of future recip_hFacC): set future
4352        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
4353        solver S/R ;
4354      - fill diagnostics of vertical advective fluxes (computed from tendency)
4355        when using implicit vert. advection;
4356      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
4357         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
4358         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
4359         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
4360    o pkg/diagnostics:
4361      - add diags for T & S tendency which goes through Adams-Bashforth.
4362    
4363    checkpoint63f (2011/11/30)
4364    o pkg/obcs/obcs_calc_stevens.F:
4365      - join some loops to reduce number of if-statements
4366      - fix a bug in code for northern and southern boundaries.
4367    o pkg/seaice/seaice_init_varia.F
4368      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
4369        caused zero ice-velocities for the B-grid code
4370    o pkg/seaice/seaice_init_fixed.F
4371      - fix a bug in the initialisation of the second metric terms
4372        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
4373      - this affects all seaice configurations with useCurviLinearGrid = .true.
4374        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
4375        = .true. (default)
4376      - the only verification experiment affected is global_ocean.cs32x15:
4377        icedyn, seaice, and seaice_dynmix (AD)
4378    o pkg/thsice/thsice_diagnostics_state.F
4379      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
4380        not contain garbage that can lead to surprises in diagstats_calc.F
4381    o model/src:
4382      - move bi,bj loops inside INTEGR_CONTINUITY ;
4383      - call INTEGR_CONTINUITY directly from forward_step.F
4384        (previously called from momentum_correction_step.F)
4385      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
4386        forward_step.F and pkg/ecco/the_main_loop.F
4387    o model/src/do_oceanic_phys.F:
4388      - reset addMass to zero only if useICEFRONT ;
4389      - separated k-loop for rhoInSitu calculation ;
4390      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
4391        and at constant T,S (= WdRHOdP);
4392      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
4393        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
4394        transport of locally-referenced potential density);
4395        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
4396    o gluemnc:
4397      - replace ncrcat with ncks when adding variables to *.glob.nc
4398      - change the way variables without record dimensions are handled so that
4399        files that have variables with and without record variables can be glued:
4400        add a record dimension with a new unique name to be able to differentiate
4401        between variable with and without a-prior record dimensions. Remove
4402        this record dimension before adding the variable to the *.glob.nc file.
4403        This procedure automatically works also for grid.*.nc files that do not
4404        have any record dimension.
4405    o verification/cpl_aim+ocn:
4406      - generate new reference output on baudelaire (gfortran, mpich2) (previously
4407        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
4408    o pkg/obcs/obcs_calc_stevens.F:
4409      - add code for northern and southern boundaries.
4410      - reorder some loops to save some operations and so that drFBar can be scalar
4411    o model/src:
4412      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
4413        truncation) and add diagnostics for Adams-Bashforth tendency increment.
4414      - update test-exp. AD output:
4415        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
4416      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
4417        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
4418        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
4419        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
4420        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
4421        tutorial_plume_on_slope.
4422    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
4423      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
4424      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
4425      does not even come with an F77 compiler anymore, this should not be
4426      a limitation
4427    
4428    checkpoint63e (2011/11/06)
4429    o pkg/seaice adjoint of LSR:
4430      - substantially rework STORE dirs.
4431      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
4432        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
4433        and only perform SOLV_MAX_FIXED adjoint iters.
4434        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
4435        always goes to same record, meaning that the last forward field will be
4436        the one used in the adjoint - an approximation.
4437      - now produces non-zero LSR-related gradients, and acceptable gradients for
4438        An's zonal (x-z) test case (to be checked in)
4439      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
4440        (but these are screwed up by the thermodynamics in the first place);
4441        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
4442        output_adm.txt also reflects changes to seaice_lsr
4443      - global_ocean.cs32x15:
4444        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
4445          (output_adm.seaice.txt was updated)
4446        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
4447          (output_adm.seaice_dynmix.txt)
4448    o test-exp. exp4+stevens:
4449      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
4450    o pkg/seaice (lsr solver):
4451      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
4452        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
4453      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
4454      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
4455        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
4456      - compute (with new S/R) and print initial (+ free-driff sol. if available)
4457        and final residual of linearised system.
4458    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
4459      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
4460    o pkg/obcs: Stevens BCs (still only for east and west)
4461      - fix Stevens BCs by using intermediate velocities of previous
4462        time step as "baroclinic" contribution rather velocity of one grid cell
4463        inside the boundaries; more consistent but makes the entire treatment
4464        more complicated, requires new pickup files and two new S/Rs:
4465        obcs_copy_uv_n and obcs_save_uv_n
4466        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
4467        (undefined by default)
4468      - silently move computation of some grid factors into separate loops to
4469        save some recomputations
4470      - add a hack for non-linear free surface
4471      - add a verification experiment to exp4 that tests this code
4472    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
4473    
4474    checkpoint63d (2011/10/25)
4475    o pkg/obcs + seaice-dynamics:
4476      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
4477        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
4478        values (consistent with an implicit method).
4479      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
4480        return to older implementation (same results as before); note that none of
4481        the "experimental" OBCS_SEAICE options are implemented in the new version.
4482      - switch test exp. seaice_obcs to use new version (update output).
4483    o pkg/seaice:
4484      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
4485      - add parenthesis in Water-Ice drag calculations (evp & lsr);
4486      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
4487        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
4488      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
4489        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
4490    o pkg/layers:
4491      - Include potential density as new coordinate (Thanks to David Munday)
4492    o pkg/dic:
4493      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
4494        carbonate computation/output to CALC_PCO2_APPROX
4495    o pkg/generic_advdiff
4496      - make TAF generate code that vectorizes:
4497        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
4498    o model/src:
4499      - improve vectorization also for adjoint code of
4500        solve_tridiagonal and solve_pentadiagonal. As this requires up to
4501        5 new 3D-fields, this code is only turned on for the combination of
4502        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
4503        for singular matrix check (only for TARGET_NEC_SX).
4504      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
4505        ALLOW_AUTODIFF. This flag now needs to be set outside of
4506        solve_tri/pentadiagonal.F
4507    o pkg/exf:
4508      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
4509        optional namelist EXF_NML_OBCS).
4510      - add many debug-print (to trace down where pkg/cal error msg comes from)
4511    o pkg/mom_vecinv/mom_vi_hdissip.F
4512      - rearrange loops so that vectorization is improved and in particular
4513        the adjoint routine vectorizes. The code is a little longer now, but I
4514        think easier to read.
4515        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
4516    o pkg/seaice:
4517      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
4518    o pkg/exch2:
4519      - alternative code (without tile x tile matrix) for cumulated (global) sum;
4520        used as default; keep using matrix version in adjustment.cs-32x32x1.
4521    o tools/build_options:
4522      - after merging some MPI and/or multi-threads specific optfiles so that
4523        the modified default optfile support both built (using genmake2 -mpi
4524        for the MPI built, using genmake2 -omp for OpenMP built),
4525        move now obsolete optfiles to tools/build_options/unsupported/
4526       (add copy of email sent to support list in doc/optfiles_changes.txt)
4527    
4528    checkpoint63c (2011/09/28)
4529    o pkg/ebm:
4530      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
4531        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
4532    o pkg/seaice (SItracer pickup)
4533    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
4534      To be done:
4535      - thorough testing of missing fields in S/R seaice_read_pickup
4536      - thorough matching between generic tracers and specific fields used
4537        (e.g. volume-weighted age, area-weighted age, salinity, ...)
4538    o pkg/grdchk:
4539      - all procs calculate and print finite-difference gradient (for testreport)
4540      - change description output used by testreport;
4541      - AD testing: also compare and report Finite-difference gradient;
4542        => update all output_adm*.txt
4543    o test exp. global_ocean_ebm:
4544      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
4545        and turn on exactConserve; update (fwd) output.
4546    o pkg/seaice (LSR):
4547      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
4548      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
4549        * identical results with non-CS topology (but save up to half of EXCH calls)
4550        * no much changes in cs-32 verification tests since no ice at face edges
4551         (differences due to convergence criteria, since nb of iterations changed)
4552        * expect some differences on lat-lon-cap grid.
4553        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
4554    o pkg/exch2:
4555      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
4556        many tiles); until alternative coding is added, just add a stop.
4557    o pkg/kpp:
4558      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
4559        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
4560    o optfiles:
4561      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
4562        into corresponding standard one, which now support different build:
4563        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
4564      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
4565    o pkg/obcs (seaice):
4566      - add missing EXCH for uIce,vIce after applying OBCS;
4567      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
4568        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
4569        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
4570      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
4571      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
4572        and eedata.mth for MPI and mutlti-threaded testing.
4573    o pkg/flt:
4574      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
4575      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
4576      - fix pickup and trajectories + profiles output with multi-threads;
4577      - add parameter to select group of fields to write along trajectory and
4578        profile (default unchanged);
4579      - only call PORT_RAND* function when flt_noise <> 0;
4580      - add multi-threaded test for verification exp. flt_example.
4581    o eesupp/src:
4582      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
4583      - USE_OMP_THREADING: check that number of threads (from eedata) matches
4584        actual number (from env.var. setting).
4585    o pkg/ebm:
4586      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
4587      - add multi-threaded test for verification exp. global_ocean_ebm
4588    
4589    checkpoint63b (2011/08/29)
4590    o pkg/ebm:
4591      - fix sign of runoff;
4592      - update directly forcing fields (Qnet,EmPmR) to use standard
4593        external_forcing_surf.F (remove ebm_forcing_surf.F);
4594      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
4595      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
4596        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
4597      - update global_ocean_ebm parameters file data and update output (fwd+ad).
4598    o verification/matrix_example:
4599      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
4600        MPI and mutlti-threaded testing.
4601    o pkg/matrix:
4602      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
4603      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
4604      - fix for multi-threaded (remove DATA statement);
4605      - use standard DIFFERENT_MULTIPLE function;
4606      - add MATRIX_OPTIONS.h
4607    o verification/matrix_example:
4608       To allow to split the domain in several tiles, change the domain size
4609        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
4610        Western side) of land points.
4611    o (*_)write_pickup:
4612      - fix few bugs in mypackage_read/write_pickup.F
4613      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
4614        array of length 1 (was caught by compiler syntax-check).
4615    o pkg/diagnostics (velocity potential solver):
4616      - fix initialisation of main diagonal matrix (for overlap values)
4617    o tools/build_options:
4618      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
4619        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
4620      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
4621        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
4622        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
4623        and use "-devel" testreport option for standard testing on baudelaire.
4624    o pkg/grdchk:
4625      - Assume that all gradient-check position are within the same tile
4626        corresponding to global indices (iGloTile,jGloTile) and that
4627        positions (i,j indices or nbeg) are local to this tile;
4628      - set tile local-indices and proc. number according to tile global-indices;
4629      - remove grdchkwhichproc from namelist (retired param);
4630      - send adjoint gradient to all procs so that all procs print it to STDOUT;
4631      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
4632    o adding package bbl (Bottom Boundary Layer)
4633      description in MITgcm/pkg/bbl/bbl_description.tex
4634      example/test experiment in MITgcm_contrib/bbl
4635    o adjoint verifications
4636      - changed 5 experiments to multi-tiles
4637        * global_ocean.90x40x15
4638        * obcs_ctrl
4639        * offline_exf_seaice
4640        * tutorial_dic_adjoffline
4641        * tutorial_tracer_adjsens
4642        changed reference output for those that crossed tile boundaries
4643        (changed choices of gradient check positions)
4644      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
4645      - temporary bug fix in grdchk_loc.F for obcs
4646    o genmake2 & testreport
4647      - add target "obj" (just for OBJFILES files) to Makefile;
4648      - add option to specify FEXTRAFLAGS on command line.
4649    o pkg/mypackage:
4650      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
4651    
4652    checkpoint63a (2011/08/02)
4653    o pkg/diagnostics (velocity potential):
4654      - fix velocity-potential calculation when using OBCS: balance net inflow
4655        at each level (new S/R OBCS_DIAG_BALANCE).
4656      - fix some of the problems with OBCS in stream-function calculation.
4657    o pkg/exf/exf_readparms.F
4658      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
4659        EXF_NML_OBCS) more consistent, so that you need not have these lists
4660        in data.exf when they are not used.
4661    o optim/optim_readdata.F:
4662      - add some output about obcs variables that might help debugging
4663      - add a check about nvarlength
4664    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
4665    o pkg/diagnostics (velocity potential):
4666      - fix mask for OBCS (still problems in stream-function with OBCS);
4667      - add specific parameter (default = main code CG2D params) for solver;
4668      - in case of poor convergence, use solution corresponding to lowest residual.
4669    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
4670      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
4671      and should be avoided where possible.
4672    o model/src (rStar):
4673      - include r* effect on reference-state (PhiRef) in totPhiHyd
4674        (so that it's really the potential anomaly at the cell center);
4675        affect solution only if z* with full pressure in EOS.
4676      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
4677        update output (because of z* in totPhiHyd and viscA4 changes);
4678      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
4679        @ constant r) until interpolation at constant r is implemented.
4680    o pkg/diagnostics
4681      - fix RCENTER diagnostics in case cell center is not at interface middle
4682    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
4683      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
4684      that THETA and SALT are "conservative temperature" and "absolute
4685      salinity"
4686    o pkg/ctrl
4687      - fix computation of endrec in s/r ctrl_init_rec
4688      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
4689    o pkg/seaice/seaice_growth.F
4690      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
4691        remove then obsolete STORE directives
4692      - fix STORE directives for tice and tices, so that only the
4693        appropriate part of the fields are stored (and not the entire
4694        field); update global_ocean.cs32x15.seaice AD output.
4695      - cosmetic changes: adjust CPP flags and indentation for better
4696        legibilty
4697    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
4698      Chris Wilson)
4699    o pkg/gmredi:
4700       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
4701       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
4702    
4703    checkpoint63  (2011/07/11)
4704    o pkg/exch2:
4705     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
4706     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
4707       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
4708       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
4709    o pkg/diagnostics:
4710     - deal with pairs of post-processed diags which are computed together; in
4711       particular, re-order list of diags within 1 file to save 2nd computation.
4712     - add S/R to compute velocity stream-function (called after velocity-potential
4713       calculation) from divergence free transport -> new diagnostics "PsiVEL".
4714     - add parameter to select grid-point location where PsiVEL == 0.
4715    o eesupp/src:
4716       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
4717       (specific S/R needed with exch2 topology - for now, just print an error msg)
4718    o pkg/shelfice
4719     - Implement friction velocity-dependent transfer coefficients following
4720       Holland and Jenkins, JPO, 1999
4721       Original code by M. Losch with small modifs.
4722       Enable with CPP option SHI_ALLOW_GAMMAFRICT
4723       and runtime flag SHELFICEuseGammaFrict
4724    o verification lab_sea & global_ocean.cs32x15:
4725     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
4726       does not miss some dependencies (but is slower) and also works with many files
4727       (default makedepend limitation for AD built).
4728     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
4729    o pkg/diagnostics:
4730     - add run-time parameter "useMissingValue" (def=False) to fill land-point
4731        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
4732       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
4733     - Extend the use of "missing_value" setting from data.diagnostics for the case
4734       of counter-diagnostics (where fraction-weight is zero). This applies both to
4735       MNC and MDS output files.
4736    o pkg/seaice/seaice_growth.F:
4737      - add 'a priori' cap of latent heat flux based on actual mass considerations
4738        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
4739        non-legacy seaice_solve4temp.
4740      - add diagnostic of the residual sublimation freshwater flux (the freshwater
4741        flux taken from the ocean if the total actual latent heat fluxes exceed
4742        the maximum)
4743      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
4744       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
4745      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
4746       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
4747      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
4748      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
4749    o verification 1D_ocean_ice_column:
4750       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
4751       update results
4752    o pkg/diagnostics:
4753     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
4754       which are not filled-up but computed from other diags ; In this case, the mate
4755       diag points to the primary (filled-up) diag to used for post processing.
4756     - Update Velocity-potential computation using post-processed diag framework.
4757     ==> Change the ordering of fields and time-periods in MDS output file
4758       when using periodic averaging: now writes one time record with the full set
4759       of fields for this time period, then the next time reccord (it used to be
4760       one field with the full set of time records then the next field).
4761         Note: this is now similar to NetCDF (MNC) output file. <==
4762    
4763    checkpoint62z (2011/06/21)
4764    o adjoint monitor:
4765     - Add adjoint monitor output for packages exf, seaice
4766       and update relevant testreport output
4767    o pkg/seaice:
4768     - re-order diags inits so that they appear in order in available_diagnostics.log
4769     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
4770       area/heff/hsnow preceeding thermodynamic growth/melt.
4771     - modified diag: SIdA; output actual effect, as the description states.
4772     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
4773     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
4774       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
4775        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
4776     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
4777     - added diagnostics for seaice generic tracers (SItr*).
4778     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
4779     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
4780     I. Fenty: 18-Jun-2011:
4781     Minor changes to seaice package:
4782     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
4783        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
4784       - Differentiated "regularization variables" from "floor variables"
4785        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
4786        * hiceMin became SEAICE_hice_reg (old hiceMin)
4787          (with _reg meaning regularization variable)
4788       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
4789        so as to ensure energy conservation when going between phases
4790      - A22 was not used anywhere
4791     2) Changed regularization procedure for heffActual and hsnowActual to ensure
4792        well-boundedness and smooth adjoint in seaice_growth.F
4793     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
4794        because the old regularization always set heffActual >= 0.05 cm
4795     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
4796        on AREA when HEFF > 0.
4797      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
4798        requiring that DISABLE_AREA_FLOOR *not* be defined
4799     Affected verifications:
4800      - 1D_ocean_ice_column (output.txt output_adm.txt)
4801      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
4802    o pkg/diagnostics:
4803      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
4804      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
4805        (was _RL, now integer) with option = 0 to retrieve all levels.
4806      - add pieces of code to compute velocity potential at each level (new diagnostics
4807        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
4808        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
4809      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
4810        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
4811        and in diagnostics_fract_fill.F (do not need a valid pointer for the
4812        diagnostics counter-mate); check that definition of counter-diagnostic
4813        includes a valid counter-mate (in diagnostics_set_levels.F).
4814    o model/src (rStar):
4815      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
4816        affect solution only if z* with full pressure in EOS;
4817        update output of test-exp global_ocean.90x40x15.
4818    o pkg/seaice:
4819      - introduce siEps=1e-5 parameter
4820      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
4821      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
4822      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
4823        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
4824        as well as ice cover age and ridging index (attached to AREA).
4825        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
4826        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
4827        Up to SItrMaxNum=3 tracers can be used simultaneously.
4828    o pkg/salt_plume:
4829      -introduce SPsalFRAC run time parameter that sets the fraction of the
4830       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
4831       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
4832    o model debug options:
4833      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
4834        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
4835      - Refine debug-msg printing selection (3 new levels):
4836        debugMode  : controls printing of debug messages (sequence of S/R calls).
4837        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
4838         debLevZero =  0 ; /* level of disabled aux. msg printing */
4839         debLevA =  1 ; /* level of minimum  aux. msg printing */
4840         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
4841         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
4842         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
4843         debLevE =  5 ; /* level of extensive debug printing */
4844        New debugLevel default: with default debugMode value (=F),
4845          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
4846          and if debugMode=T, default debugLevel = 4 (debLevD).
4847        Relation with previous settings:
4848         debLevB (=2) corresponds to former debLevA (=1)
4849         debLevD (=4) corresponds to former debLevB (=2)
4850        Note:
4851         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
4852         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
4853            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
4854      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
4855        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
4856    o pkg/obcs:
4857      - change OBCSfixTopo default from True to False (should not change the results);
4858        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
4859    o pkg/thsice:
4860      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
4861        2nd layer seaice sublimation (unlikely to happen)
4862      - use Interior mask for OBCS in thsice_advection.F (similar to what is
4863        done in gad_advection & seaice_advection).
4864    o adjoint:
4865      bug fix spotted by Gael Forget:
4866      seaice_advection and thsice_advection still had
4867      legacy CPP options to avoid CS corner updates for adjoint
4868    o pkg/seaice:
4869      => Change some of the defaults (2011/05/29):
4870         - change SEAICEuseFluxForm default (from False to True)
4871         - change DIFF1 default (from 0.004 m/s to 0. m/s)
4872         And print warnings if DIFF1 is not set in data.seaice and centered
4873          avection scheme is used without any diffusion.
4874      also:
4875      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
4876      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
4877      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
4878        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
4879        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
4880      update results of test exp.:
4881         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
4882             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
4883             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
4884         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
4885         seaice_obcs: output (SEAICEuseFluxForm=T)
4886      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
4887          for standard fwd & AD lab_sea tests (to keep the same output).
4888    o pkg/seaice/seaice_growth.F:
4889      - use Ian Fenty's capping formulas for actual ice
4890      thickness thoughout EVOLUTION branch.
4891      - put treatment pathological case #2) in CPP brackets
4892      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
4893      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
4894    o pkg/seaice:
4895      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
4896      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
4897      also pass fac as a param, which can be 1. (to update the tendency
4898      field) or the time step (to update the field itself).
4899      - seaice_advdiff.F: for multidim, call seaice_diffusion with
4900      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
4901      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
4902      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
4903      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
4904    o pkg/seaice:
4905      diffusion with centered advection scheme (diffus.F & advect.F):
4906      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
4907        to just compute the laplacian of input-field.
4908      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
4909      - fix flux-form version in diffus.F to conserve tracer.
4910      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
4911       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
4912    
4913    checkpoint62y (2011/05/26)
4914    o pkg/seaice:
4915     - seaice_growth.F : in EVOLUTION branch, always include
4916       a_QSWbyATM_cover in qnet (as it should be).
4917     - verification/global_ocean.cs32x15 : update results accordingly
4918       (output.seaice.txt output_adm.seaice.txt).
4919    o pkg/seaice + obcs:
4920     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
4921       equivalent of assuming no tracer gradient outside the OB region.
4922       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
4923     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
4924       after changes above);
4925     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
4926       only at OB location (instead of over a band of OLx width).
4927    o pkg/seaice:
4928     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
4929       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
4930    o pkg/obcs:
4931      - split header file "OBCS.h" into 4 separated files:
4932        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
4933       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
4934         (contain no conditional statement which depends on OBCS options).
4935      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
4936        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
4937    o ctrl, cost, grdchk & autodiff pkgs:
4938      - make options file more standard (like other {PKG}_OPTIONS.h file but
4939        with AD_CONFIG.h); clean-up some of the included header files.
4940    o pkg/obcs:
4941      - do not mask tracer when applying OB (tracer == 0 could generate problems)
4942      - apply tracer OB values to tracer field only at OB location (instead of
4943        over a band of OLx width)
4944      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
4945      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
4946        obcs_apply_tloc.F & obcs_apply_sloc.F
4947    o obcs in model/src:
4948      - call OBCS_APPLY_W only if NonHydrostatic.
4949      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
4950      - reset dEtaHdt and wVel to zero outside OB interior region ;
4951      - leave tracer unchanged outside OB interior region: This has no effect
4952        on the solution but just to prevent unrealistic tracer value outside OB.
4953      - zero out velocity outside OB interior region: This has no effect on
4954        the solution but just to prevent unrealistic velocity outside OB.
4955    o obcs and non-lin free-surf:
4956       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
4957       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
4958       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
4959       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
4960       update results of test-exp. exp4(nlfs).
4961    o exp4 (nlfs) test-exp:
4962       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
4963       with NonLin-FreeSurf); update output.nlfs.txt
4964    o obcs and 2d/3d solver norm:
4965       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
4966       and outside OB interior region (will allow to place OB further inside the
4967       domain). Depending on the domain, can affects cg2d-Norm (previous
4968       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
4969       and cg3d-Norm (previous Norm was computed before canceling OB terms),
4970       e.g. in tutorial_plume_on_slope.
4971      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
4972    o pkg rbcs:
4973      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
4974      - add capability to apply relaxation to horizontal velocity uVel & vVel.
4975    o pkg/grdchk: add gradient check for control variable xx_shifwflx
4976    o pkg/shelfice/shelfice_init_fixed.F
4977      fix CPP-flag combinations
4978    o pkg/seaice: Merge iceage code of Pierre Rampal
4979      * update/change/correct ice age calculations
4980      * add age updates for pathological cases
4981      Probably needs more testing...
4982    
4983    checkpoint62x (2011/05/13)
4984    o pkg/mom_vecinv:
4985       high-order vorticity scheme: use interior masks (maskInW & S)
4986       to zero-out (outside OB) gradient of vorticity.
4987    o verification exp.:
4988       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
4989       hs94.128x64x5 and seaice_obcs ; update results.
4990    o pkg/obcs:
4991      fix bug in OBeta for YZ sections in obcs_exf_load.F
4992    o pkg/ctrl, pkg/shelfice, and optim:
4993      - add new control variable xx_shifwflx (fresh water flux underneath ice
4994        shelves). This is almost as tedious as obcs-ctrl, because the
4995        variables needs its own mask.
4996      - add a cost function term that penalizes the deviation of xx_shifwflx
4997        from the first guess (zero) in analogy to other control variables
4998    o pkg/shelfice:
4999      - start basic adjoint
5000    o pkg/ctrl:
5001      - remove extra 2D field "for good measure" when initializing in
5002        ctrl_set_globfld_[xy/xz/yz].F
5003      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
5004      - improve error messages in ctrl_set_unpack_*
5005    o OBC implementation in momentum:
5006       use interior masks (maskInC,W & S) in momentum S/R:
5007       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
5008       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
5009       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
5010       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
5011       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
5012        (and also with Leith/Smagorinsky harmonic-viscosity).
5013       Update output of experiment dome and exp4 (+nlfs).
5014    o exp4 test-exp:
5015      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
5016        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
5017        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
5018        time-varying OB at Western-side for wVel (NonHyd); update output.
5019      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
5020        and biharmonic-viscosity ; also use prescribed time varying OB.
5021    o pkg/obcs:
5022      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
5023    o model/src:
5024      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
5025      - initialise startTime & nIter0 with unlikely values: allows to set one
5026        from the other without ambiguity.
5027    o seaice_obcs test-exp.:
5028      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
5029    o pkg/obcs:
5030      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
5031        no longer needed with maskInC,W,S in pkg/generic_advdiff.
5032    o pkg/seaice:
5033      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
5034        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
5035      - fixed bug in the initialization of sea ice salinity variable HSALT
5036        in seaice_init_varia.F  (removed dependence on ICE2WATR)
5037    o fizhi-cs test exp.:
5038       switch reference output convention for these 2 non-standard test-exp,
5039        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
5040          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
5041       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
5042    o model/inc:
5043      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
5044        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
5045    o pkg/seaice:
5046      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
5047    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
5048      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
5049        and initial HSALT
5050    
5051    checkpoint62w (2011/04/26)
5052    o pkg/mom_fluxform:
5053      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
5054      - use parameter "sideDragFactor" in no-slip BC side-drag part.
5055      - update output of exp. global_ocean.90x40x15
5056    o pkg/mom_vecinv:
5057      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
5058    o update seaice exp.:
5059      use more consistent parameter values (remove "backward compatability only":
5060       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
5061      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
5062       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
5063    o update test-exp global_ocean.90x40x15:
5064      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
5065      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
5066      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
5067      o turn on zStar & viscA4 in standard set-up (dir input/)
5068        and update output files: output.txt & output.dwnslp.txt
5069    o new AD-test experiment: obcs_ctrl
5070      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
5071    o pkg/dic:
5072      fix two bugs in handling water vapour pressure in carbonate chemistry
5073      and air-sea fluxes. Found by Val Bennington and Galen McKinley
5074      (add DIC Option = WATERVAP_BUG to recover old results)
5075      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
5076    o adding allowInteriorFreezing option to check for water below freezing point
5077      at depth and bring the negative heat anomaly to the surface level
5078    o pkgs _fields_load:
5079      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
5080      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
5081        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
5082        rbcs to get interpolation weights and time reccord number.
5083      - fix multi-threading in aim_fields_load.F
5084      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
5085    o external_fields_load:
5086      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
5087       interpolation weights) to use in a periodic time-series ; do not divide by
5088       time-step to convert to integer:
5089       - this fixes case where externForcingPeriod is not multiple of time-step
5090          (Thanks to Christopher L. Wolfe)
5091       - this fixes case where externForcingPeriod is an odd multiple of time-step
5092         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
5093      store index of time-record which is currently loaded:
5094       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
5095       - needed for the adjoint but not yet used because of extensive recomputations;
5096         (to be fixed soon)
5097    
5098    checkpoint62v (2011/04/02)
5099    o verification/1D_ocean_ice_column added to test Ian Fenty's
5100      pkg/seaice_growth.F modifications for improving sea ice code differentiability
5101    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
5102      (new velocity statistics after changing maskInW & maskInS definition)
5103    o pkg/generic_advdiff with OBCS:
5104      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
5105      equivalent to assumption of no tracer gradient outside the OB region.
5106      This will affect the results if using obcs+biharmonic diffusion.
5107      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
5108    o pkg/obcs:
5109      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
5110      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
5111      in Interior region. No impact on solution but affects Velocity monitor stats.
5112    o pkg/ptracers (adjoint)
5113      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
5114      tape file for each tracer
5115    o model/inc/src and pkg/autodiff: add parameters that allow to turn
5116      of parts of the adjoint code at run time. For now, there are only
5117      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
5118      parameters are set in data.pkg.
5119      This is the lazy coward's version of doing this, but still useful for
5120      debugging. In order to do it right, everything needs to be moved to
5121      pkg/autodiff.
5122    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
5123      the end; this fixes the adjoint balancing code for open boundaries.
5124    o pkg/ctrl:
5125      - change behavior of xx_${varname}period to be analogous to exf-conventions:
5126        xx_${varname}period =   0.,  means time-independent control part
5127        xx_${varname}period = -12., means one-year-periodic monthly control part
5128      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
5129        clean up ctrl_init a little, remove unused variables
5130      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
5131      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
5132    
5133    checkpoint62u (2011/03/15)
5134    o model/src:
5135      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
5136        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
5137      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
5138        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
5139    o pkg/ctrl/obcs/ecco:
5140      - remove obsolete, unused, and partially broken code:
5141        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
5142        ALLOW_CTRL_OBCS_BALANCE
5143      - put a stop statement into ecco/cost_obcsvol.F, but also add
5144        cost_obcsvol to ecco_ad_diff.list
5145    o pkg/ecco: fix counting cost function contributions for obcs (code
5146      by Matt M.) and diffkr for diagnostics
5147    o pkg/ecco, pkg/ctrl, pkg/grdchk:
5148      add cost penalty terms for initial uvel, vvel, eta controls
5149      and I/O for prior error files
5150    o pkg/mdsio:
5151       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
5152       (new argument) to check for tiled file in mdsioLocalDir : this fix the
5153       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
5154    o pkg/ctrl:
5155     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
5156       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
5157       unused and superfluous variables
5158     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
5159    o pkg/ecco
5160     - enable adjoint of Stevens OB
5161    o pkg/ctrl/ecco/grdchk:
5162      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
5163        Fortunately, we do not have any tests for the numerous cpp-flagged
5164        option of "obcs as control parameters" so we will never know
5165        if this is an improvement (but at least now things compile).
5166      - remove an obsolete initialization from ecco_cost_init_barfiles.F
5167      - fix some problems within never used ifdefs to make the code compile
5168    o pkg/obcs:
5169     - Refine Interior mask definition to work with more complex OB (e.g.
5170       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
5171       read in Interior mask from file. Check if Interior mask is consistent
5172       with OB list of indices.
5173    o pkg/seaice
5174     - beginning code for a seaice tracer package,
5175       but currently only used for seaice age: SEAICE_AGE
5176       SEAICE_num = 4
5177       iTracer = 1: area-weighted ice age
5178               = 2: volume-weighted ice age
5179               = 3, 4: template for one-year vs. multi-year ice
5180       data.seaice has new namelist SEAICE_PARM03 for arrays related to
5181       SEAICE_num
5182    
5183    checkpoint62t (2011/03/05)
5184    o pkg/obcs:
5185     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
5186       then normal component. This ensures that the normal component is set
5187       correctly even when it conficts with tangential setting from an other OB.
5188       Affects results of test-experiment seaice_obcs: update the output.txt
5189    o pkg/obcs:
5190     - add code to monitor statistics of dynamical fields at OB.
5191     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
5192       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
5193       - change default: balance the Net inflow through all OB (instead of balancing
5194         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
5195     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
5196       to match Nortern OB inflow (OBCS_balanceFacN=0).
5197    o pkg/seaice:
5198     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
5199    o pkg/seaice (seaice_growth v 1.113):
5200     - reverting seaice_growth to v 1.111 in order to have code with exact bit
5201       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
5202       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
5203       runtime flag SEAICEareaFormula is kept but is inactive
5204    o model/src:
5205     - add new param to scale curvilinear grid distance and area when using
5206       a different sphere radius from the grid-files.
5207     - test/check multi-threads EXCH applied to local variable (cg2d_x)
5208    o adjoint:
5209     - enable adjoint of Stevens OB
5210     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
5211       (a bit delicate because of potentially modified adj. common block structure;
5212       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
5213    
5214    checkpoint62s (2011/02/15)
5215    o pkg/seaice (seaice_growth v 1.112):
5216     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
5217       computing the ice cover tendency from effective thickness tendencies. Include
5218       Ian Fenty's formula.
5219     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
5220       SEAICEareaFormula.
5221     - simplify notations for the various d_HEFF/d_AREA terms.
5222    o pkg/gmredi:
5223     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
5224       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
5225       add a verification test-run (front_relax.bvp) to test GM_useBVP.
5226    o pkg/seaice (seaice_growth v 1.111):
5227     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
5228     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
5229       also melt ice.
5230    o pkg/seaice:
5231     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
5232     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
5233    o pkg/cheapaml:
5234     - from Nico Wienders: New version of this package.
5235    o pkg/flt:
5236     - add CPP options to prevent floats to re-enter the opposite side of
5237       a periodic domain (default: keep periodicity)
5238    o pkg/gmredi:
5239     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
5240       (needed for multi-dim advection).
5241     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
5242    o model/src:
5243     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
5244    o tutorial_tracer_adjsens
5245     - extend to NLFS and replace maskC by hFacC
5246       (change reference output accordingly)
5247    
5248    checkpoint62r (2011/01/24)
5249    o testreport:
5250     - add option -deloutp (-do) to remove output file after successful run
5251     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
5252       extract exact list of procs from this file ; adjust COMMAND by
5253       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
5254    o pkg/ecco: replace old ineffective way of penalizing deviations from
5255      first guess (of obcs) with code by Matt Mazloff
5256    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
5257      exf/cal
5258      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
5259        and handle case of obcs?period == 0
5260        Not affected by these changes: There is still an inconsistency in
5261        the computation of start/endrec for the obcs variables for ALLOW_CAL
5262        defined (see comment by Menemenlis, 7-Mar-2003)
5263      - make S/R ctrl_get_gen_rec return something meaningful even if
5264        ALLOW_CAL is not defined
5265      - ctrl_getobcs?: simplify code so that it does not need to use
5266                       S/R exf_swapfields
5267    o testreport:
5268       allow to test MPI with different number of processors for each experiment:
5269       create file "SIZE.h.mpi" in each build dir.
5270       Note: update of "-command" argument not yet implemented.
5271    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
5272      alleviate the need for additional 3D tapes when using
5273      the non-inear free surface in the adjoint. This is done
5274      by adding an 'update' of hfacc etc. to their current
5275      value at the beginning of forward_step.F.
5276    o pkg/seaice
5277      seaice_lsr: move stress-divergence computations out of outer pseudo-
5278      timestepping loop
5279    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
5280      up, so that the calls of the ctrl_* subroutines are really at the end
5281      of the routine.
5282    o pkg/gmredi:
5283      allow to specify a 2-D horizontal map and a 1-D vertical profil
5284      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
5285    o pkg/seaice:
5286      move lsr iterations from seaice_dynsolver to seaice_lsr.
5287    o pkg/seaice:
5288      reduce memory footprint of seaice mutldim advection tapes,
5289      by using a 2D tape independent of the generic_advdiff ones,
5290      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
5291    
5292    checkpoint62q (2010/12/29)
5293    o model/src:
5294      - check horizontal grid-spacing for unset or zero/negative values.
5295      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
5296    o pkg/flt:
5297      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
5298      - precision of input and output files set according to readBinaryPrec
5299        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
5300      - initial float position from tiled file was not converted to index space
5301        (looks like a bug): fixed to make it similar to initial pos. global file.
5302    o global_ocean.cs32x15:
5303       change SIZE.h of AD set-up to get same tiling as with MPI.
5304       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
5305    o model/src:
5306       add flag to control printing of domain fields (bathymetry, hFac ...) in
5307       ini_mask_etc (call to plot_fieds_xy*).
5308    o pkg/thsice:
5309       if useEXF, some forcing fields are not valid in overlap: fixed by computing
5310       over the interior only + apply EXCH at the end (like with SEAICE advection).
5311    o pkg/mdsio:
5312      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
5313        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
5314      - change barrier call for safe multi-threads access to 3-D shared buffer.
5315      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
5316      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
5317        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
5318    o pkg/flt:
5319      - add fourth-order Runge-Kutta integration
5320      - add basic exch2 support (only 1 facet supported so far!)
5321    o pkg/mdsio+rw:
5322      new S/R to read local (or tile independent) vector (read counterpart of
5323       mds_writevec_loc, and front-end write_glvec_rl/rs).
5324    o global_ocean.cs32x15: additional input_ad.seaice experiment
5325        that uses pkg/seaice rather than pkg/thsice.
5326        (using multidim advection for seaice)
5327    o towards more F95 syntax for array specification in namelist:
5328      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
5329        of all verification experiments.
5330           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
5331          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
5332      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
5333    o global_ocean.cs32x15: additional input.seaice experiment
5334        that uses pkg/seaice rather than pkg/thsice.
5335    
5336    checkpoint62p (2010/12/17)
5337    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
5338        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
5339    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
5340        allow for use of multim. advection in seaice adjoint.
5341    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
5342      - first attempt to close budgets by taking into account the freshwater
5343        flux implied by the sublimation of snow and ice. So far only the
5344        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
5345        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
5346    o eesupp/src:
5347      new S/R with new option (NML_EXTENDED_F77) to change array specification
5348      from F95 standard to commonly accepted extended F77 form.
5349      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
5350      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
5351      for less tolerant f77 compiler (e.g., pgf77, g77).
5352    o globalFiles:
5353      commented out in parameter file "data" since it's not safe with MPI
5354      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
5355      in this case); no longer commented out in restart test (tst_2+2).
5356    o add adTapeDir to specify a special directory where adjoint tapes are
5357      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
5358      and cannot be used together with mdsioLocalDir.
5359    o nesting pkgs:
5360      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
5361      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
5362      - add parameter files + utils dir + output from short run on beagle.
5363    o pkg/seaice:
5364        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
5365    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
5366      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
5367    
5368    checkpoint62o (2010/11/25)
5369    o pkg/exf:
5370      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
5371    o pkg/seaice:
5372      - seaice_ocean_stress: split a loop for better vectorization of the
5373        adjoint code
5374      - seaice_growth.F: fix bug in conservation of freshwater connected to
5375        capping of heff, put contribution into d_HEFFbyNEG
5376      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
5377        by something more sensible (parameters that are what their name implies)
5378      - change some defaults, so that by default exf-parameters are used for
5379        things like rhoAir, cpAir,latent/sensible heat parameters, in order
5380        to reproduce the old results, many data.seaice now contain funny values
5381        for cpAir and latent heat of sublimation
5382    o packages_readparms.F: move exf_readparms up in line so that
5383        exf-parameters are visible for other packages (e.g. seaice)
5384    o debugMode & debugLevel=2:
5385      - differentiate between debugMode & debugLevel=2:
5386        debugMode: controls printing of debug messages (sequence of S/R calls).
5387        debugLevel: controls printing of algorithm intermediate results and stats.
5388      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
5389        => allows to print debug-stats without all sequence of call messages.
5390      - switch control of debug print from debugLevel to debugMode in many S/R.
5391    o pkg/obcs (obcs-sponge):
5392        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
5393        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
5394    o pkg/generic_advdiff:
5395      - record overlap minimum size for each advection scheme;
5396      - refine criteria on overlap minimum size;
5397      - check and stop (in gad_check) if overlap size is too small.
5398    o pkg/obcs:
5399      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
5400        once, in ptracers_implicit.F)
5401      - with seaice: remove test on empty file name in obcs_apply_seaice (always
5402        apply OB values when tile has OB)
5403    o model/src, coriolis setting:
5404      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
5405        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
5406        files (selectCoriMap=3) with any grid.
5407      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
5408    o pkg/seaice/seaice_growth.F:
5409        a few cosmetic changes that reduce the number of lines of code
5410    o pkg/obcs: add boundary conditions following Stevens (1990)
5411      - the code follows old MOM/NAOSIM code
5412      - so far it is only implemented for the eastern and western boundaries
5413        and NOT for pTracers
5414    o pkg/rbcs:
5415      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
5416        beginning of the first rbcs forcing period.
5417      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
5418        offline package, i.e., one file per time, labeled by iteration number;
5419        deltaTrbcs sets the timestep with which the data was generated;
5420        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
5421      - rbcsForcingCycle=0 makes forcing non-cyclic.
5422      - make arithmetic safe for negative times and odd forcing periods.
5423    
5424    checkpoint62n (2010/11/09)
5425    o pkg/seaice:
5426        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
5427    o pkg/obcs:
5428       New S/R to copy tracer value from the OB location to narrow band region
5429        (width = same as overlap) beyond the OB: preserve OB value (needed for
5430        high-order scheme) which were overwritten by EXCH call if in overlap
5431        region. Applied to theta, salt, ptracer and advected seaice variables.
5432       With seaice: use maskInC in similar way as in gad_advection.F,
5433        in seaice_advection.F and advect.F.
5434       Update output of experiment seaice_obcs and change exp4 to test OBCS with
5435        4th order Adv.Scheme. for pasive salt and ptracer.
5436    o tools/genmake2:
5437      - when looking for an optfile (not specified), only search for Fortran compiler
5438        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
5439      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
5440        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
5441      - set default for CPP to "cpp -traditional -P" (was the case without specifying
5442        an optfile, but otherwise default was just "cpp".
5443      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
5444      - when "CC" is not set in the optfile, look for possible C compiler
5445        (instead of just setting CC=cc)
5446      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
5447        => add a ".F" to ".o" rule for source files with no "#include" (such as
5448           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
5449      - move gfortran before g77 in list of possible Fortran compiler (consistent
5450        with reference compiler switch from g77 to gfortran)
5451    o pkg/seaice:
5452      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
5453        seaice_check that stops the model, when the CPP flag is used.
5454      o seaice_growth.F: make capping of ice volume conserving by returning the
5455        capped ice as freshwater to EmPmR. This does not change the verification
5456        experiments but will change runs where the capping is acutally active
5457    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
5458      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
5459         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
5460         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
5461    o tools/genmake2:
5462      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
5463      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
5464      - clean previous genmake log files before anything else.
5465      - change Makefile to remove testreport log files (*.tr_log) and genmake log
5466        files only with "CLEAN" target (instead of "Clean");
5467    o pkg/generic_advdiff:
5468      Change OBCS in multiDim advection (gad_advection.F):
5469       Use maskInC to prevent intermediate update of tracer-field in OB regions,
5470       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
5471       which were applying future time-step OB values.
5472      This way, all explicit calculations use current-time-step OB values
5473       (simpler and more consistent).
5474      Affects results when set-up uses time-varying OBC and multi-dim advection;
5475       update output of experiment seaice_obcs.
5476    o pkg/seaice:
5477      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
5478       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
5479         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
5480      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
5481       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
5482       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
5483    o pkg aim (2010/10/26):
5484      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
5485        formulation with obliquity, eccentricity, ... as run-time parameters,
5486      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
5487        upward shortwave radition at the surface (all-sky and clear-sky).
5488    o pkg/obcs:
5489      - writing sections with globalFiles=T does not work: switch to tiled-files
5490        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
5491      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
5492      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
5493    
5494    checkpoint62m (2010/10/21)
5495    o pkg/seaice: vectorize seaice_solve4temp.F
5496      - move iterations loops outside of i/j-loops
5497      - requires 2D arrays for TB and effConduct
5498      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
5499        modified in this routine
5500      - a little bit of clean up, adjusting indentation, etc.
5501      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
5502        performance and '**TWO' by '**2' (because TWO is a float),
5503        replaced ONE, ZERO
5504    o eesupp/src:
5505       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
5506    o pkg/seaice/seaice_growth.F
5507      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
5508      merging process. The merged routine has two branches, and one activates the 'evolution'
5509      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
5510      In summary, here is what the '10/10 revision' did consist of
5511        part 1: seaice_growth.F revisions 1.71 to 1.75
5512          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
5513            The emphasis here was on improving readability (e.g. by trying to use meaningful
5514            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
5515        part 1.5:
5516          - revising the lab_sea experiment to make it a more useful (i.e. stable
5517            and representative of an actual model run). This was done by generating a
5518            (winter) pickup to start from, switching back the main experiment dynamic
5519            solver from evp to lsr, having one of the experiments use the free drift solution.
5520        part 2: seaice_growth.F revisions 1.76 to 1.85
5521          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
5522          - Sorting out the various fields units and sign (set early on and reset at the end)
5523            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
5524            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
5525          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
5526            and simplifying logical expressions to further improve readibility.
5527        part 3: seaice_growth.F revisions 1.86 to 1.89
5528          - Re-organize the blocks of code more logically.
5529          - Merging the '_if.F' pieces that add something new.
5530    o pkg/thsice:
5531      - vectorize thsice_solve4temp and thsice_get_exf.
5532        Problem: thsice_solve4temp has an unvectorizable statement that
5533        might also be problematic for TAF
5534      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
5535        does not change the verifcation experiment, but will change all
5536        experiments that have this flag undefined (not tested in verification);
5537        a little reorganization to save a few 2D fields and recomputations
5538      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
5539      - 2nd step:  fix some store dirs
5540        o seems to work somewhat, i.e. using ifort but not g77
5541        o likely cause are incomplete init. or recomputation
5542        o start verification/global_ocean.cs32x15/input_ad.thsice
5543    o pkg/obcs: add support for exch2
5544      - the position of the boundary and prescribed values are specified using
5545        a global domain with exch2 facets stacked
5546        - in x for N,S boundaries (like W2_mapIO=-1)
5547        - in y for E,W boundaries (so E,W boundaries do not overlap)
5548    o pkg/mdsio: add support for writing global sections with exch2
5549        file layout is as for obcs described above:
5550        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
5551        - for y-z sections, facets are stacked in y
5552    o pkg/thsice:
5553       - change a few routines for better vectorization: thsice_albedo.F,
5554         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
5555         not affected, but in particular the latter routine has changed
5556         dramatically (not necessarily easier to read now).
5557       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
5558       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
5559    o verification/lab_sea:
5560      - overhaul of the forward model experiments. The main motivation
5561        for this revision is that lab_sea has proven quite fragile (when
5562        changing the sea-ice code, and switching platforms) to a point
5563        when failures were very hard to attribute to specific code problems.
5564      - the suspected reason for this fragility is noise amplification by evp so,
5565        to start with, we decided to replace evp with lsr in the main experiment.
5566      - the input.lsr experiment thus became obsolete and was removed.
5567      - it was replaced with the input.fd experiment that uses an
5568        analytical "free drift" solution as the ice velocity field.
5569      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
5570        will hopefully allow us to discriminate problems due to dynamic solvers
5571        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
5572        us to test additional options, along with the salt plume package.
5573      - Finally a pickup was generated (at the end of a one year run) to
5574        make the tests more representative of an actual model run. Previously
5575        the tests starting point was a 1m thickness of ice everywhere.
5576    o pkg/seaice:
5577      - introducing S\R seaice_freedrift.F that compute the
5578        analytical solution to an approximate ice momentum
5579        equation (i.e. the simple stress/coriolis balance).
5580      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
5581        of the free drift velocity field, and enable its use.
5582        To actually use the free drift solution as the model ice
5583        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
5584    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
5585    
5586    checkpoint62l (2010/10/04)
5587    o pkg/seaice:
5588      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
5589      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
5590       version (with USE_ORIGINAL_SBI undef);
5591    o add hooks for new packages OASIS, the package will follow
5592      (hooks exclude the seaice pkg for now)
5593    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
5594      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
5595      rather than mdsio_readvector.F/mdsio_writevector.F, within
5596      adread_adwrite.F to read/write adjoint-related tapes to disk.
5597    o eesupp and pkg/mdsio: ALLOW_WHIO
5598      Option to write/read 2D fields to files including tiles halos.
5599      The main purpose is for adjoint related "tape I/O".
5600      The secondary purpose is for debugging phases.
5601      A word on those rather specifically intended purposes.
5602      The code was meant to be stripped down to the bare minimum.
5603      Typically, there is a unique and basic mapping to the global
5604      buffer (tile by tile, then proc by proc, then level by level), and
5605      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
5606      meant to generate user friendly outputs of various shapes and forms.
5607      Rather it is intended, for the knowledgeabale developers,
5608      to be largely independent of the many mdsio options, to allow
5609      outputs of tiles+halos in debugging phases and in adjoint runs,
5610      and to allow some flexibility in tuning (adoint) I/O depending on each
5611      file system behavior. With regard to tuning, most of the potential knobs
5612      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
5613      to specify directories, to specify the typical size of I/O calls, etc.)
5614      are not yet included, and will be added if they prove useful.
5615    o pkg/seaice:
5616       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
5617    o pkg/seaice:
5618       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
5619       code (seaice_budget_ice_if.F) which enable to recover old standard
5620       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
5621       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
5622    o model/src (rStar):
5623       use simple average (not area weighted) of rStarFac at U,V point when using
5624       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
5625       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
5626    
5627    checkpoint62k (2010/09/17)
5628    o adjoint
5629       * changed verification/global_ocean.cs32x15 ; adjoint now tests
5630         Adams-Bashforth 3 + NLFS + RSTAR
5631       * some more modifs required for ECCO-GODAE v4
5632    o pkg/seaice
5633       add SEAICE_AGE_VOL option to use volume instead of area for
5634       integrating SEAICE_AGE
5635    o model/src:
5636       first check-in of sigma & hybrid-sigma coordinate code ; also includes
5637       non-linear free-surface parts ; but pressure-gradient not yet coded.
5638    o pkg/ptracers:
5639       option for ptracer to convert Salt Relax into additional EmP.
5640        tested in exp. global_ocean.90x40x15.dwnslp (update output)
5641    
5642    checkpoint62j (2010/08/25)
5643    o pkg/ggl90:
5644       other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
5645    o pkg/dic: car_flux.F, phos_flux.F
5646      - reduce number of exp-calls in order to improve performance
5647      - clean up a little (replace fields by their macros, etc., fix
5648        typo in CPP-flag)
5649    o pkg/ggl90: minor changes
5650      - GGL90diffKrS was removed --> always use GGL90diffKr
5651      - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
5652      - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
5653        (commented out for now)
5654      - change in max/min operations to ensure that smoothing is ok
5655      - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
5656      - always use diffKrNrT as background profile (i.e. never use diffKr field)
5657    o pkg/cfc: bug fix, AREA(i,j,1,bi,bj) -> AREA(i,j,bi,bj)
5658    o pkg/dic:
5659      - model/src/impldiff.F: if TARGET_NEC_SX, extend loop ranges for better
5660        vectorization
5661      - small bug fix in insol for the unlikely case of a cartesian grid
5662      - towards vectorizing the dic package: bio_export.F, car_flux.F, phos_flux.F
5663        + now vectorize, which also removes adjoint recomputations;
5664        + replace integer maksp1 by _RL maskp1
5665        + replace a**x by exp(x*log(a)) in phos_flux.F for speed
5666    
5667    checkpoint62i (2010/07/21)
5668    o pkg/flt:
5669      - with OBCS: stop floats which enter the OB region
5670    o model/src:
5671      - use tempVertAdvScheme & saltVertAdvScheme (instead of horizontal ones)
5672        for implicit vertical advection.
5673    o pkg/seaice:
5674     - account for melting in seaice age evolution.
5675     - remove double counting of seaice ridging effect on seaice age.
5676    
5677    checkpoint62h (2010/06/18)
5678    o pkg/exch2:
5679     - remove exch2_*xy_rx files: call was replaced with exch2_*3d_rx(myNz=1).
5680    o tools/genmake2
5681      - remove "-pdefault" option: redundant with the use of "packages.conf";
5682      - remove file pkg/pkg_default : set the default as a pkg group
5683        ("default_pkg_list") defined in pkg/pkg_groups;
5684      - fix for case pkg/pkg_depend is missing (was hanging before);
5685      - add option "-pgroups" to specify a different pkg_groups than the default.
5686    o verification/adjustment.cs-32x32x1:
5687       add a "minimal" set-up test (code_min & input_min) which only compiles
5688       eesupp/src and the 2 pkgs (exch2 & debug) which don't need model/src & inc.
5689    o tools/genmake2
5690      - extend pkg_depend rules to model & eesupp (e.g., if model depend on [pkg]))
5691      - fix details of checking for mnc & profile pkg when NetCDF is unavailable.
5692    o pkg/exf: merge exf_bulk_largeyeager04 into exf_bulkformulae because these
5693      files are nearly the same anyway.
5694      Step 1: make exf_bulkformulae look like exf_bulk_largeyeager04:
5695       - redefinition of tau(i,i) (by a factor of ustar)
5696       - 1./exf(Const/T) -> exf(-Const/T) (big change in the results)
5697       - replace rhonil by rhoConstFresh in computation of evap (bug fix)
5698       - replace u/vstress=tau*rd*ws*cw by tau*rd*u/vwind (changes results)
5699       - replace
5700         rd(i,j)= rdn(i,j)/(exf_one - rdn(i,j)/karman*psimh )
5701         shn    = sh(i,j,bi,bj)*rd(i,j)/rdn(i,j)
5702         by
5703         shn    = sh(i,j,bi,bj)/(exf_one - rdn(i,j)/karman*psimh )
5704         (changes results)
5705       -> exf_bulkformulae v1.22,
5706          update verification experiments lab_sea, offline_exf_seaice, seaice_obcs
5707          (lab_sea: output.hb87.txt 1.11, output.lsr.txt 1.25, output.salt_plume.txt 1.13,
5708                    output.txt 1.63
5709           offline_exf_seaice: output.seaicetd.txt 1.7
5710           seaice_obcs: output.txt 1.10)
5711      Step 2: do the actual merge and remove exf_bulk_largeyeager04.F
5712       -> exf_bulkformulae v1.23,
5713          unfortunately requires updating lab_sea.salt_plume (6 matching digits),
5714          and global_ocean.cs32x15.icedyn (only 11 matching digits)
5715      Also update output_adm of exp. lab_sea (all 4) and offline_exf_seaice.
5716    o adjoint of exch-1:
5717     - pass high-level EXCH S/R through TAF (eesupp/src/exch_ad_diff.list)
5718       (note: was already like this when using EXCH-2) and remove flow dir
5719       and hand-written AD version of high-level EXCH S/R (pkg/autodiff);
5720     - provide flow-dir for low-level exch1 S/R (eesupp/src/exch1_ad.flow);
5721     - update pkg/exch2 diff list.
5722    
5723    checkpoint62g (2010/05/19)
5724    o eesupp/src (exch-1):
5725     - split exch_rx.F into Forward S/R (exch1_rx.F) and Adjoint S/R (exch1_rx_ad.F)
5726       and remove argument "simulationMode"; same thing for all exch_*rx_cube.F
5727       (renamed to exch1_*rx_cube.F).
5728     - change accordingly exch_*_rx.template and AD version in pkg/autodiff
5729       to call new exch1 S/R ; update Makefile and .cvsignore.
5730     - replace call to exch2_xy_rx S/R with exch2_*3d_rx(myNz=1) (will remove
5731       exch2_xy_rx later)
5732      Note: after updating your code, need to run "make clean" in eesupp/src
5733    o test experiment bottom_ctrl_5x5:
5734       new output_adm.txt with fewer grdchk & less monitor output.
5735    o model/src:
5736      remove the call to ini_cori in initialise_varia.F (just keep the usual one
5737       in initialise_fixed.F). More consistent with coriolis & horizontal grid
5738       beeing treated in the same way (ini_grid is not called a 2nd time).
5739    o pkg/exf:
5740      - rewrite exf_bulk_largeyeager04.F for better vectorization, changes
5741      global_ocean.cs32x15/input.icedyn (11 digits of agreement), updated
5742      - fix adjoint (used worked for ALLOW_ATM_WIND defined, works for this now)
5743      - cosmetic changes to exf_bulkformulae.F to make it look more like
5744        exf_bulk_largeyeager04.F
5745    o eesupp/src (exch-1):
5746      - Fix AD EXCH code for 2-D domain special cases (Nx=1 or Ny=1).
5747      - Separate buffer filling and MPI sending: allow EXCH-1 to work for local
5748        array (non-shared) when using MPI+MTH. Also reduces number of BARRIER
5749        (even without using MPI).
5750      - Message mode: move RecvAck setting (indicator of buffer being ready)
5751        from send_put to recv_get S/R (was useless before, but not sure if
5752        it's much more useful now);
5753      - Switch the order of sync: MPI-proc 1rst and then threads;
5754      - take out spin-waiting code (#undef EXCH_USE_SPINNING), use BARRIER instead.
5755      - fix AD code for communication mode ='get' (but not used).
5756    o model/src:
5757      initialise dPhiHydX,dPhiHydY inside calc_grad_phi_hyd.F (so that TAF does
5758      not drop it in S/R mddynamics, producing NaN in hs94.1x64x5 AD-test exp).
5759    o utils/matlab/rdmnc.m: adapt to be able to use the generic matlab netcdf API
5760    o pkg/ctrl: require a specific set of control variables and exf-flags for
5761      adjoint of seaice (stop in ctrl_check.F if conditions are not satisfied)
5762    o model/src:
5763     a) 1rst version of a new driver S/R to turn-off output freq and flags after the
5764       1rst forward sweep, to avoid over-writing output files during recomputations
5765       recomputations (& grdchk); called from cost_final.F (& ctrl_init_ctrlvar.F ?)
5766     b) 2nd version:
5767      - add specific pkg S/R for seaice & ptracers (called from S/R TURNOFF_MODEL_IO);
5768      - switch-off more output flags (exf_monFreq, chkPtFreq, dumpInitAndLast,
5769         writePickupAtEnd) + seaice & ptracers output;
5770      - do not switch off MNC flags (otherwise, won't get admonitor netcdf file)
5771    o model/src:
5772      - new S/R rotate_uv2en_rl (..._rs) that rotates vector fields.
5773    o pkg/exch2:
5774      - remove "simulationMode" from arg. list of S/R EXCH2_RX1,2_CUBE ;
5775      - add argument "signOption" to EXCH2_RX1_CUBE (will be needed for SM exch).
5776    o pkg/autodiff & exch2:
5777      process exch_uv_agrid_3d_rx.f & exch2_uv_agrid_3d_rx.f through TAF
5778      (for now, only if ALLOW_EXCH2 is defined).
5779    o pkg/autodiff:
5780      - include PACKAGES_CONFIG.h in exch*ad.flow & exch*ad.F
5781        (not supposed to be in CPP_OPTIONS.h) to get ALLOW_EXCH2 defined correctly.
5782       + clean-up comments (_RS is not always real*4)
5783      - fix bug in ADEXCH_UV_3D_RX (without EXCH2, was calling the forward exch S/R)
5784      - add a stop in ADEXCH_UV_AGRID_3D_RX if trying to use it with EXCH2:
5785        was calling a forward exch2, which is wrong ; used in SEAICE & EXF pkgs.
5786    o testreport (AD-tests):
5787      no longer link files from dir "../input" (1rst link files from
5788      "../input_ad.[xx]" if secondary test "xx" and then from "../input_ad")
5789    
5790    checkpoint62f (2010/04/29)
5791    o model/src/the_main_loop.F:
5792      adjust store directives for seaice evp and multicategory according to
5793      pkg/ecco/the_main_loop.F
5794    o adjoint:
5795      global_sum_ad was incomplete (noted many times by many people ;)
5796      nice description by Jean U. as follows:
5797      * allreduce(var) in global_sum.F can be interpreted as
5798        reduce(sum) followed by broadcast of sum.
5799      * The adjoint of that is
5800        sum(adjoint) followed by broadcast(summed adjoint value)
5801        or in other words, allreduce(sum, adjoint vars)
5802      We were missing the sum(adjoint)!
5803      Benign, except(!) for "global" scalars appearing in tile loops (bi,bj)
5804      (noted by J.M. Campin, e.g., in cost_ssh_mean, variable offset).
5805      The fix should produce 16-digit accuracy between
5806      single-CPU multi-tile (e.g. nSx=2, nPx=1) and
5807      multi-CPU single-tile (e.g. nSx=1, nPx-2)
5808      We'll probably change this yet again shortly
5809    o eesupp/src:
5810      - fix global_sum_r4 (wrong from previous modif in Jun 2009; ever used ?)
5811    o pkg/icefront
5812      - ALLOW_SUBGLACIAL_RUNOFF option adds capability for time-evolving
5813        specification of addmass array based on a 2D field, which is added
5814        at bottommost wet level at each horizontal location.
5815    o model/src:
5816     horizontal grid initialisation (other than curvilinear): add code for Exch2 IO
5817     layout; (not always compatible with delX,delY setting; commented out for now).
5818    o pkg/exch2:
5819     change tile to processor setting (case nSy*nPy > 1): allows default model mapping
5820     (myX and myYGlobalLow) to be used for simple (1 facet, no blank tile) config.
5821    
5822    checkpoint62e (2010/04/15)
5823    o pkg/obcs:
5824      - fix wrong index in OBCS_SPONGE_V for Eastern-OB (reported by David Hebert).
5825    o pkg/dic:
5826      -fix bug in fe_chem.F for multi-tile (nSx*nSy > 1) set-up;
5827        (note: not presently tested in any forward verification exp.)
5828       update tutorial_global_oce_biogeo AD output file.
5829    o pkg/exf:
5830      - account for the variation of albedo as a function of zenith angle
5831        by defining ALLOW_ZENITHANGLE in EXF_OPTIONS.h
5832    o build_options:
5833     - rename "linux_ia64_ifort+mpi_ice_nas" to "linux_amd64_ifort+mpi_ice_nas"
5834    o pkg/dic:
5835      change DIC atmos-CO2 box (method 3, dic_int1=3) initialisation & restart:
5836      - use binary pickup file for restart;
5837      - initialise atmos-CO2 box from dic_pCO2 parameter;
5838      - fix multi-threaded.
5839    o pkg/rbcs:
5840     - clean-up RBCS code: add RBCS_OPTIONS.h file ; fix multi-threaded ;
5841       change (+ fix IO calls) type of array RBC_mask from _RL to _RS.
5842     - add RBCS to exp4 passive tracer 01 (rbcs was previously untested)
5843       and update output.txt
5844    o pkg/kpp:
5845     - add diagnostics for KPP non-local flux of Temp, Salinity and pTracers;
5846     - change diagnostic of KPP non-local term: output average of KPPghat*KPPdiffKzS
5847       (= ratio of KPP non-local (salt) flux relative to surface-flux) when
5848       using pkg/timeave & pkg/diagnostics (diag 'KPPghatK' replaces 'KPPghat ');
5849     - change pkg/offline to read-in average KPPghat*KPPdiffKzS from file
5850       KPP_ghatKFile (instead of the average of KPPghat from file KPP_ghatFile).
5851    o pkg/offline:
5852      fix bug in S/R OFFLINE_FIELDS_LOAD regarding surfaceForcing conversion factor
5853      (bug was added in version 1.10 on 2007-08-23).
5854    o pkg/offline:
5855      - no need to specify periodicExternalForcing, etc ... to use offline pack
5856      - offline input files no longer just single prec --> parameter offlineLoadPrec
5857    o verification/lab_sea:
5858      change AD test to multi-tile setup and update all 4 AD output.
5859      NOTE: while cost function values remain very similar,
5860      gradients are very different, although gradient checks are self-consistent
5861      Should try to get to the bottom of this (cost function summation order?)
5862    o pkg/dic:
5863      in carbon_chem.F, replace log10 (AUTODIFF) with explicit form to avoid
5864      a weakness of TAF that drops part of double precision in log10 derivative.
5865      <= changes removed since problem has been fixed in current TAF version 1.9.71
5866      update AD output of exp. tutorial_dic_adjoffline & tutorial_global_oce_biogeo.
5867    o pkg/ecco:
5868      add missing "_d 0" in cost_readers.F, cost_readtopex.F & cost_readtopexmean.F
5869      update all 4 lab_sea AD output.
5870    
5871    checkpoint62d (2010/03/22)
5872    o build_options:
5873      remove '-r8' (and '-i4') from linux_*pgf and linux_*ifort optfiles.
5874    o remove unbalanced quote (single or double) in commented line of source code
5875      (may cause some warning with some preprocessor/makedepend versions).
5876    o pkg/seaice:
5877      fix seaice_model.F for adjoint (gael) and update AD results of experiments
5878       lab_sea (std + evp + noseaicedyn) and offline_exf_seaice.
5879    o testreport:
5880      add option '-runonly' (short: '-ro') to just do the run part (without make).
5881    o eesupp: remove JAM communication code (obsolete).
5882    o add option to genmake2 & testreport to switch "_RS" type to "real*4"
5883      (if allowed in CPP_EEOPTIONS.h); update default CPP_EEOPTIONS.h and return
5884      to default CPP_EEOPTIONS.h for exp. inverted_barometer & solid-body.cs-32x32x1
5885      (update also the output).
5886    
5887    checkpoint62c (2010/03/02)
5888    o tools/build_options :
5889       move (some) old optfiles from build_options/ to build_options/unsupported/
5890    o model/src and pkg/exf
5891       surface relaxation -- separating data and data.exf options
5892       The point is to ensure that we specify the surface relaxation
5893       either in data or in data.exf (but not half and half) and to
5894       avoid an accidental relaxation to 0 (which happened if a time
5895       scale was specified but the file name was left empty)
5896    o model/src model/inc and pkg/mom_common
5897       ALLOW_3D_VISCAH/ALLOW_3D_VISCA4 => 3D specification of Viscosity
5898       => addition to the viscosity field as computed by others schemes
5899    o tools/build_options:
5900      - rename "_generic_mpi" -> "+mpi_generic" (like other "+mpi" optfile)
5901        but keep the former optfile for few weeks for smooth transition
5902    o pkg/ecco
5903      - allow user defined cost function contributions
5904         CPP: ALLOW_USERCOST_CONTRIBUTION
5905         USAGE: compute contributions in cost_usercost_all.F
5906      - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
5907          the two options are complementary.
5908    o pkg/smooth
5909      - migration from contrib to the main repository
5910    
5911    checkpoint62b (2010/01/26)
5912    o pkg/monitor:
5913      - change back mon_printstats_rl.F & mon_stats_rl.F and add a stop
5914        (in case someone forgot to update customized pieces of code)
5915    o nonHydrostatic:
5916      - add Non-hydrostatic free-surface form (selectNHfreeSurf=1)(not fully tested);
5917      - add a simple 2-D experiment (short_surf_wave) to test it.
5918    o pkg/icefront:
5919       adding the shell of, and the hooks to, a new package that
5920       will model melting and freezing of vertical glacier ice fronts
5921    o momentum:
5922      add diagnostics of momentum tendency from Hydrostatic pressure gradient
5923       (without surf.pressure term: would need a 2nd filling since implicit term).
5924    o add 3 "_d 0"s so that fizhi compiles with xlf on iblade, and replace
5925      two " &end" by " &" (in fizhi-cs-*) because S/R NML_SET_TERMINATOR
5926      cannot deal with the former
5927    o cleaning:
5928      - remove all (except OpenAD) old TLM output from results_ad dirs.
5929      - remove unused S/R (MDSWRITEMETA, DIAGNOSTICS_ADD2LIST, old DFILE IO S/R)
5930      - comment out maskH definition (replaced by maskInC)
5931    o pkg/monitor:
5932      - change mon_printstats_rl.F & mon_stats_rl.F (were similar to mon_writestats_rl
5933        & mon_calc_stats_rl) to be the RL equivalent of mon_printstats_rs & mon_stats_rs.
5934    
5935    checkpoint62a (2010/01/15)
5936    o model/src:
5937      - bottom pressure diagnostic: correct for r* (when nonlinFreeSurf >= 4)
5938    o pkg/diagnostics:
5939      - add optional level number diagnostics (i.e., level number to be define
5940        explictly with S/R DIAGNOSTICS_SETKLEV) with parser-code(10)="X".
5941      - strictly check for valid parser-code(10) ;
5942      - check if adding diag to the list from the right place.
5943    o pkg/longstep:
5944      - change parameters and fix tracer conservation with rstar/nonlinear free surface
5945    o diagnostics:
5946     - in all pkgs, replace remaining calls to old S/R DIAGNOSTICS_ADD2LIST with newer
5947       S/R DIAGNOSTICS_ADDTOLIST ; fix seaice VICE diagnostics.
5948    o pkg/diagnostics:
5949     - Add option for writing vertical integral (sum of selected levels) of an output
5950        field instead of writing output field levels. Activate this option on a per
5951        output-file basis, by setting the 2nd character of fileflag to 'I'.
5952     - Add field-specific information relative to level integral in 3rd postion
5953        of parser diagnostics code (gdiag): " "=cumulate levels, "R"=integrate
5954        vertically (x level-thickness x hFac), "r"=same but without hFac.
5955    o do_the_model_io:
5956      - pass end-of-model-run flag as argument, from forward_step to diagnostics_write:
5957        in case useSIGREG, will write (averaged) diagnostics (if dumpAtLast) before
5958        writing pickups and stopping.
5959    o pkg/diagnostics (for now, only with mdsio):
5960      - write time information to meta file (and modify accordingly rdmds.m) :
5961        time-averaged diagnostics output: write starting and ending time of the
5962        time-averaging interval ; snap-shot diagnostics output remains unchanged;
5963    o pkg/timeave:
5964      - S/R TIMEAVE_NORMALIZ: change size of cumulated-time array (was previously
5965        always Nr), now assumed to be equal to number of levels of averaged field;
5966        only used for DIC_COST monthly mean arrays: this fixes dic_aver_final.F
5967    o pkg/sbo:
5968      - fix ocean bottom pressure global-average & 2-D time-ave output (was
5969        neither initialised nor filled).
5970      - add starting iteration in suffix of global-average output file
5971        (to avoid over-writing the file after a restart)
5972      - use standard MDSIO pkg S/R instead of SBO_WRITEVECTOR (fix byte-swap Pb).
5973    o time-average:
5974      - use simple cumulative-time array (no k index) in all pkgs: {PKG}_timeAve(bi,bj)
5975        (pkgs: aim_v23, bulk_force, dic, gmredi, kpp, land, ocn_compon_interf,
5976         ggl90, my82, opps, pp81, ptracers, sbo, seaice, shelfice, thsice)
5977        this fix DIC_COST cumulative-time array (previously: bi,bj,k)
5978      - fix 1rst call (nIter0) snap-shot output and accumulation (pkg/shelfice)
5979      - fix missing accumulation for pkg/opps.
5980      - cumulate fields only if doing time-ave output ({PKG}_taveFreq > 0)
5981         (pkgs: ptracers, kpp, ocn_compon_interf, ggl90, my82, pp81);
5982      - fix initialisation of time-ave vars and do only full time-step increment
5983        (i.e.: no first & last "half time-step") (pkgs: ggl90, my82, opps, pp81);
5984    o pkg/layers:
5985      - use standard RW pkg S/R to write the output
5986        and remove local write_fld version (which had a problem).
5987      - use simple cumulative-time array (no level index) to fix time-ave S/R calls.
5988      - fix LAYERS_CALC argument list.
5989    o pkg/timeave:
5990      - store cumulative-time in a simple tiled array (drop the level index)
5991      - add new S/R (TIMEAVE_NORMALIZE) which uses simple cumulative-time array.
5992    o pkg/ocn,aim_compon_interf
5993      - changes for multi-threaded coupled run. (tested with ifort-11 on danton)
5994    
5995    checkpoint62  (2009/12/23)
5996    o switch on useOBCSbalance in tutorial_plume_on_slope exp. and update output.
5997        (was not previously tested in any other exp.)
5998    o pkg/monitor:
5999      - clean-up _RL/_RS version: add specific S/R for statistics with mask & volume:
6000        mon_writestats_rl/s,F mon_calc_stats_rl/s.F ; will keep the old one
6001        (mon_printstats_rl/s,F mon_stats_rl/s.F) just for bare statistics.
6002      - use hFac & 2-D mask (instead of 3-D mask + hFac in previous mon_stats_rl.F).
6003      - change del2 calculation.
6004      - use interior masks (instead of maskH, <- to be remove).
6005      - shorter monitor suffix for forcing stats ("forcing" instead of "extforcing").
6006    o mask & obcs:
6007      - define 2-D "interior" masks (i.e., zero beyond OB) at 3 locations (C, W & S).
6008      - move global area computation from ini_masks_etc.F to ini_linear_phisurf.F
6009        (called after packages_init_fixed)
6010    o pkg/obcs:
6011      - move bi,bj loops into obcs_calc, so obcs_prescribe_read is called only once.
6012        Fixes bug in obcs+exf with nSx*nSy.GT.1
6013      - fix multi-tile handling in obcs balance code
6014    o nonHydrostatic:
6015      - Implement AB-3 for non-hydrostatic vertical momentum ;
6016        (change ordering of var. stored in pickup file when using NH)
6017      - move NH code from solve_for_pressure.F to 2 new S/R: PRE_CG3D & POST_CG3D.
6018      - add 2-D field to store Hydrostatic Surface Pressure adjusment from cg3d_x
6019        (in prep. for new NH free surface form).
6020    o pkg/obcs:
6021      add files & OB-variables for wVel (Non-Hydrostatic) with useOBCSprescribe
6022    o model/src:
6023      fix 2-D solver initialisation for deep-atmosphere (p-coord) with topography
6024    
6025    checkpoint61z (2009/12/01)
6026    o nonHydrostatic:
6027      Fix missing vertical flux of vert. momentum near surface (k=1). This fixes
6028        a spurious source of energy in simple baroclinic adjusment test case.
6029      Update all non-hydrostatic exp output.
6030    o model/src (3-d solver):
6031      Change again 3-D solver free-surface RHS term when exactConserv=T:
6032        simpler, consistent with exactConserv, and works with implicDiv2Dflow < 1
6033        (which was not the case with previous formulation).
6034      To recover previous version, just reset "oldFreeSurfTerm" to previous value.
6035      Affects results of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW.
6036    o nonHydrostatic:
6037      - compatible with implicDiv2Dflow < 1 ; + implement implicit factor
6038        for Non-Hydrostatic pressure gradient (similar to implicSurfPress).
6039      - change 3-D solver to work with r* (for now, only with linear free-surf.)
6040      - add few debug diagnostics (cg3d_x, residual)
6041    o model/src:
6042      fix missing EmPmR in 3-D solver RHS (was in cg2d_b but missing in cg3d_b).
6043        update output of exp. global_ocean.cs32x15.viscA4
6044    o update output of exp. global_ocean.cs32x15.icedyn after removing
6045      #define SEAICE_OLD_AND_BAD_DISCRETIZATION from SEAICE_OPTIONS.h
6046    o add entry points for Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
6047    o mnc: add horizontal grid coordinates (XC,YC) and (XG,YG) to netcdf output
6048      for complex grids, for now only to "state", "adstate", "adexf", "adseaice"
6049    o model: add Christopher Wolfe's implemetation of the single reduction cg2d
6050      (d'Azevedo, Eijkhout, and Romine, 1999) with CPP-flag ALLOW_SRCG and
6051      runtime flag useSRCGSolver. Modify verification experiment global_with_exf
6052      to test this code
6053    o pkg/cd_code:
6054      Change defaut D-grid time-stepping to get the same for D-grid momentum as for
6055       C-grid momentum. D-grid velocity used to be stepped forward in time with
6056       Adams-Bashforth only on surface pressure term. Tests show that using AB on
6057       D-grid coriolis term improves stability (as expected from CD-scheme paper).
6058      To reproduce old results, add 2 options (in CD_CODE_OPTIONS.h).
6059      Update results of exp: global_with_exf (x2), ideal_2D_oce, isomip (x2),
6060       lab_sea (3 Fwd +3 AD), natl_box (x2), tutorial_global_oce_biogeo (Fwd+AD),
6061       tutorial_global_oce_latlon, tutorial_global_oce_optim & tutorial_tracer_adjsens.
6062      Keep old results by adding CD_CODE_OPTIONS.h in exp: cfc_example, exp2,
6063           global_ocean.90x40x15(+AD), global_ocean_ebm(+AD) and OpenAD.
6064    o pkg/obcs:
6065     - fix bug in initialisation (broken since Oct 1rst modification)
6066       for useOBCSprescribe without useEXF.
6067    
6068    checkpoint61y (2009/11/15)
6069    o pkg/seaice
6070     - change (once again) the discretization for the evp solver: rather than
6071       squaring the averages of strain rates, average the squares to give
6072       a better approximation to VP behavior (in simple test); this breaks
6073       verification experiments that use EVP (lab_sea and lab_sea.hb87)
6074        --> update outputs
6075    o add CPP-flag (in mom_calc_visc.F) and TAF directive (in gmredi_slope_limit)
6076      to improve vectorization of adjoint code on TARGET_NEC_SX
6077    o verification/vermix:
6078      - change vermix to a more "classical" 1d column with high vertical
6079        resolution, seasonal heat flux forcing and constant wind forcing
6080        --> update outputs
6081    o pkg/seaice
6082     - fix diagnostics of principal stress components for EVP
6083     - add optional diagnostics of non-linear convergence for LSOR solver
6084     - make maximum zeta a runtime parameter
6085    o model/src (3-d solver):
6086      Undo modif from Dec 12, 2005 (solve_for_pressure.F cvs version v.49),
6087       which consisted in removing the Surf. Non-Hydrostatic pressure from the
6088       whole column and adding it to Eta (inspired from Casualli, 1999):
6089       Only affects 3-D solver initial guess and only if using ExactConserv,
6090       but tests did show a degradation of solver convergence. For this reason,
6091       decide to disable this piece of code.
6092       to recover previous version, just set zeroPsNH = exactConserv (line 78).
6093      Update output of exp. global_ocean.cs32x15.viscA4 & hs94.cs-32x32x5.impIGW
6094    o pkg/ggl90:
6095     - fix previous modif (unfortunatly has not been documented here).
6096    o pkg/seaice/autodiff:
6097     - add CPP flag to include clipping of zeta in EVP code;
6098       although clipping of zeta is not necessary for EVP and not recommended
6099       it was done by default, now clipping is disabled by default
6100     - modify computation and store zetaC/Z in seaice_evp for TAF
6101     - add CPP-flag SEAICE_ALLOW_CLIPVELS (undefined by default)
6102     - change seaice_calc_viscosities/strainrates for better
6103       vectorization after AD by TAF
6104     - rearrange common blocks in SEAICE.h once again for easier dumps of
6105       adjoint output, adjust adcommon.h and g_common.h
6106     - change flux form of default advection scheme for better vectorization
6107       of adjoint code
6108     - modify lab_sea/input.lsr to test the flux form of default advection
6109       scheme
6110    o autodiff: fix seaice fields in g_common.h (left over from 3 to 1 level
6111      transition in checkpoint61r)
6112    
6113    checkpoint61x (2009/10/19)
6114    o adjoint: adding two new verification experiments
6115      * tutorial_global_biogeo: an online dic sensitivity experiment
6116        (work with G. Forget)
6117      * tutorial_dic_adjoffline: an offline dic sensitivity experiment
6118        (an update of the Dutkiewicz et al., 2006 paper)
6119      Both use the same CO2FLUX cost function, but different controls
6120      Gradient checks look good, but some recomp. could still be traightened out
6121      Should add xx_dic control variable to test at some point
6122    o model/src:
6123      add run-time parameters to check and/or mask initial Temp & Salt
6124    o pkg/ptracers:
6125      apply zonal filter (if used) to all passive tracers
6126    
6127    checkpoint61w (2009/10/12)
6128    o adjoint:
6129      * update and finish work on adjoint of dic package (G. Forget)
6130      * start adjoint of offline package
6131      * bug fix for cube-sphere TLM code (active_file_g.F)
6132    o tutorial_global_oce_optim:
6133      now tested with 4 tiles (change data.grdchk and update output_adm.txt)
6134      and add SIZE.h_mpi for MPI testing
6135    o pkg autodiff
6136     - fix bug in autodiff_restore
6137     - make genmake2 remove comments and empty lines from ad_input_code.f in
6138       order to reduce file size (new script file remove_comments_sed)
6139    o allows to specify vertical profile of vertical viscosity (viscArNr)
6140    o pkg autodiff
6141      autodiff_ini_model_io: comment out writing of grid information to netcdf
6142      files, because at this time the grid fields are a bunch of zeros
6143      (this is analogous to ini_mnc_vars.F)
6144    o pkg seaice/autodiff:
6145     left-over from removing the 3-time-level fields:
6146     - small rearrangement of common blocks (SEAICE.h)
6147     - fix field declaration in order to get meaningful output in
6148       adseaice.*.nc (adcommon.h)
6149    o pkg obcs:
6150     - go through NH code only if nonHydrostatic=T
6151     - fix restart for Orlanski (Hydrostatic; still to fix NH+Orlanski restart)
6152     - move call to OBCS_CALC before SEAICE_MODEL which needs seaice-obc fields
6153       => Update output of experiment seaice_obcs
6154     - useOBCSbalance: code is wrong with multi-tile / proc: add a stop.
6155     - fix NH+Orlanski restart (add wvel OBC value in pickup file)
6156     - fix restart for useOBCSprescribe + useEXF
6157    o pkg ctrl
6158     - make obcs as control parameter work also with useSingleCPUio
6159     - replace a few sny and snx by Ny and Nx to be consistent with
6160       ctrl_set_globfld_x/yz.F
6161    o pkg seaice
6162     - re-introduce global field frWtrAtm for the case of
6163       ALLOW_MEAN_SFLUX_COST_CONTRIBUTION defined (SEAICE.h, seaice_growth.F)
6164     - catch the case of an empty filename in seaice_cost_init_fixed.F
6165    o pkg ecco:
6166     - small bug fixes in the_main_loop
6167      . fix order of monitor arguments
6168      . change SEAICE_MULTILEVEL to SEAICE_MULTICATEGORY
6169      . move include DYNVARS.h up outside the ALLOW_AUTODIFF_TAMC block so
6170        that ALLOW_ECCO_FORWARD_RUN works with NONLIN_FRSURF
6171     - replace cos(yc*deg2rad) by _rA in cost_mean_heat/saltflux.F, fix the
6172       imbalance diagnostics for wmean_h/sflux = 0
6173     - add actual values to f_obcsn/s/w/e in ecco_cost_final.F
6174     - catch the case of empty filenames in ecco_cost_init_fixed.F
6175       and ecco_readparms.F
6176     - fix the logic of wsalt=0.and.wsalt2=0 to wsalt=0.or.wsalt2=0 (and theta)
6177       to make this statement meaningfull in ecco_cost_weights.F
6178    o pkg zonal_filt:
6179      - change ZONAL_FILTER S/R interface (allows to filter 2-D fields)
6180      - when using rStar, filter uVel*hFacW instead of uVel
6181       (tested without topography: fix a Pb of growing instability with NLFS)
6182    o pkg/aim/thsice:
6183     -Add capacity to read a Q-Flux to be applied in slab-mixed layer thsice_slab_ocean.F
6184      (works as SST restoring)
6185    o pkg/thsice:
6186     -add specific parameter for salt restoring in slab mixed-layer
6187       (by default equal to the temperature restoring)
6188    
6189    checkpoint61v (2009/09/21)
6190    o pkg/kpp:
6191     -add double diffusive contributions as a hack, turned off by default
6192      for now, and the code can be excluded with a CPP-flag
6193      EXCLUDE_KPP_DOUBLEDIFF just as EXCLUDE_KPP_SHEAR_MIX
6194     -add a verification experiments to "vermix" to test this code
6195    o pkg/mom_common:
6196      Move computation of length scales to mom_init_fixed.F (avoid recomputation
6197      at each time-steps*levels).
6198    o pkg/layers:
6199      Created a new package for computing volume fluxes in temperature or
6200      [not yet implemented] density layers, e.g. for calculating residual
6201      overturning circulations.
6202    o pkg/diagnostics:
6203      implement a RS type version for the set of DIAGNOSTICS-FILL subroutines
6204    o fix few RS/RL type mismatch (check with ifort 11.1 "-warn all" option)
6205    o pkg/mdsio (& pkg/rw): rework high level S/R interface:
6206      To avoid mixing type (RS/RL) of input/output array argument,
6207      replace single mixed-type array with a pair from each type (RS/RL).
6208    o setting pickupSuff force to start from a pickup (even if nIter0=0): this
6209      is now implemented for all pkgs (previously only done for the main pickup)
6210    
6211    checkpoint61u (2009/08/25)
6212    o pkg/obcs:
6213      - change OB?eta from _RS to _RL and put them into a separate commen block
6214      - add code to read OB?eta from a file via obcs_prescribe_read: the code
6215        compiles and does not destroy any other experiments, the data is read
6216        properly, but the code is not tested in actual applications
6217    o ini_mnc_vars.F: if available (ALLOW_CAL), use startTime_1 and 2 to
6218      create a meaningful unit attribute for the time coordinate variable
6219    o pkg/ebm: add plenty of missing "_d 0" ;
6220       update results of experiment global_ocean_ebm (fwd + adjoint tests)
6221      Notes: several pieces of code only works for (very) specific set up
6222       (domain size, lat range, etc ...); should be documented & stop if one
6223       of those assumptions is not meet.
6224    o pkg/seaice: add missing "_d 0" in HSNOW initialisation
6225       update results of experiments: lab_sea (3 fwd tests + 2 adjoint tests)
6226          and offline_exf_seaice (seaicetd + adjoint).
6227    o add missing "_d 0" in ShortWave flux penetration (S/R SWFRAC):
6228       update results of experiments: lab_sea (4 fwd tests + 3 adjoint),
6229        seaice_obcs, global_ocean.cs32x15 (icedyn & thsice) and natl_box (x2).
6230    o few changes to pass when compiling with strick checking of arguments
6231       across S/R (allow to find few bugs in S/R calls).
6232    o pkg/seaice:
6233     - seaice_evp: move if-statement out of loop (TEM) at the cost of 11 new
6234       2d-fields, for slightly better performance
6235    
6236    checkpoint61t (2009/07/22)
6237    o pkg/seaice:
6238     - remove unused variables in seaice_evp
6239     - reduce number of SQRT in seaice_evp and seaice_calc_viscosities
6240    o eeset_parms.F, open_copy_data_file.F & ini_parms.F:
6241       named file replacing SCRATCH files (for TARGET_BGL & TARGET_CRAYXT):
6242       each processor opens a different file (a fix from Matt).
6243    o cg2d:
6244       use simple EXCH (overlap size = 1 and ignore corners), like in cg3d.F :
6245       this reduces number of EXCH calls by 2 when using exch2.
6246       For now, keep previous size array for gc2d_nsa.F to avoid Pb with store
6247       directives and missing simple EXCH (exch_s3d_rx) adjoint code.
6248    o pkg/thsice:
6249       add code for Near Infra-Red albedo (from Jeff)
6250       (turned on with run-time flag: thSIce_calc_albNIR, in data.ice).
6251    o ini_model_io:
6252       move (from packages_readparms.F & initialise_fixed.F) to ini_model_io.F
6253       MNC & MONITOR initialisation calls; move MNC calls from {pkg}_readparms.F
6254       to {pkg}_init_fixed.F for {pkg}= kpp, seaice & shelfice.
6255    
6256    checkpoint61s (2009/06/30)
6257    o pkg/exch2 (exch2_rxN_cube*):
6258       remove last BARRIER (no need to synchronise after getting data from shared
6259       buffer (get) as long as any change to buffer (put,recv) is between BARRIER)
6260    o change tiling of natl_box (from 2 to 4 tiles) to get it tested with MPI+MTH
6261      and generate new output (for the 2 tests) using default rotationPeriod.
6262    o pkg/exch2:
6263      - always call exch2_*_cube, not exch-1 anymore, if useCubedSphereExchange=F
6264        (was already the case with AUTODIFF_EXCH2 defined)
6265      - add bj in exch2 arrays and S/R.
6266      - can now use pkg/exch2 for regular (non CS) set-up; switch test experiment
6267        MLAdjust to exch2 (identical results except with MPI -> truncation diff);
6268    o add pkg/longstep for ptracer timestep a multiple of U/V/T/S timestep
6269      - adds deltaT argument to the subroutines TIMESTEP_TRACER DWNSLP_APPLY
6270        GAD_ADVECTION GAD_CALC_RHS GAD_IMPLICIT_R GAD_SOM_ADVECT
6271      - verification experiment natl_box.longstep
6272    o build_options: ifort+mpi_aces optfile (following Constantinos advise):
6273      allow different versions of ifort (8 or 9) and different versions
6274       of mpi (mpich or mpich2) to be used with the same optfile.
6275      requires to load a netcdf module and set MPI_INC_DIR (see comments inside
6276       optfile). Change testing scripts (example_scripts/ACESgrid) accordingly.
6277    o pkg/seaice:
6278      fix previous modif (3-level field removed) for old-pickup reading
6279    
6280    checkpoint61r (2009/06/25)
6281    o pkg/seaice:
6282     - clean up the 3-time levels of UICE,VICE,HEFF,AREA in three steps:
6283      1. introduce fields for time step (N-1)
6284      2. do not use levels 2 and 3 anymore (but keep them)
6285      3. replace 3D versions of UICE,VICE,HEFF,AREA by 2D versions. This
6286         includes changes to pkg/thsice/thsice_get_velocity.F,
6287         model/src/external_forcing_surf.F, pkg/obcs/obcs_apply_seaice.F, and
6288         pkg/obcs/obcs_apply_uvice.F.
6289     - completely remove code for leap-frog time stepping for second order
6290       advection
6291     - adjusted adjoint accordingly;
6292       gradient checks have improved by an order of magnitude!
6293    
6294    checkpoint61q (2009/06/22)
6295    o pkg/seaice: fix bug in free slip boundary conditons for LSOR solver
6296     - the boundary conditions along open boundaries are unclear, because the
6297       associated masks are set to zero and are thus treated as closed when
6298       applying the slip-boundary conditions.
6299     - move initialisation of grid variables from seaice_init_varia to _fixed
6300    o adding doc/diags_changes.txt
6301    o model/src:
6302      do_the_model_io: rename few pkg S/R which are called from do_the_model_io,
6303       to avoid "_diags" naming if no relation to pkg/diagnostics.
6304      ini_theta,ini_salt: fix (at least compile the code) reading from NetCDF
6305       file and only call PLOT_FIELD_XYZ if debugMode=T.
6306      remove few PLOT_FIELD_XY calls outside initialisation.
6307      remove few unnecessary BARRIER.
6308    o pkg/salt_plume: add SaltPlumeSouthernOcean to allow disabling
6309      of salt_plume package in Southern Ocean
6310    o pkg/thsice:
6311     - fix hOceMxL in overlap (needed for sea-ice advection);
6312       update output of experiment global_ocean.cs32x15.icedyn.
6313    o pkg/seaice:
6314     - make the (placeholder-)tracer IceAge a little more meaningful
6315      by avoiding ridging of age due to convergent ice flow
6316     - add diagnostics for surface temperature, atmospheric and oceanic
6317       heat flux, and atmospheric and oceanic ice growth
6318    
6319    checkpoint61p (2009/06/10)
6320    o eesupp (global_max & global_sum):
6321     - add one more element to buffer (start at index 0) for GL_MAX/SUM output;
6322     - remove starting & endding barrier (no longer needed)
6323    o pkg/mdsio, writelocal:
6324       works also in multi-threaded when LOCBIN_IO_THREAD_SAFE is undefined
6325       (remove the STOP): uses shared buffer IO to store data from all threads
6326       and then let master-thread write nThreads tiles.
6327    o pkg/mdsio (read/write field):
6328     - tiled IO done in 1 piece (all levels at a time);
6329     - new header file "MDSIO_BUFF_3D.h" with 3-D buffers.
6330     - multi-threaded: allow to read/write local (non-shared) array
6331       (was already working with singleCpuIO ; now works also without);
6332       => no longer needs barrier call after reading a file (added inside
6333       mds_read/write field).
6334     - move barrier calls outside gather/scatter_2d to mds_read/write_field
6335    o pkg/obcs/exf
6336      - exf_getffieldrec.F: add a few ". _d 0" and
6337                            add code to catch the case fldperiod = 0.  
6338      - obcs_precribe_read.F: change if statements so that they match
6339                              the variable type (_RL)
6340      - add a separate exf_iprec_obcs to exf_set_obcs (by default equal to
6341        exf_iprec) as part of namelist EXF_NML_01
6342    o pkg/mdsio:
6343      - read/write tiled (local) files: read/write 1-level tile chunk at a time
6344        (instead of segment of length sNx); expected to speed up tiled IO.
6345    o pkg/exch2:
6346      - take buffer copy from/to array out of S/R exch2_send/recv into new
6347        S/R exch2_put/get ; Exch of local variable now works with MPI+MTH
6348        (tested by removing commom block statement in SOLVE_FOR_PRESSURE.h).
6349      - ad version of send/recv no longer needed (but needs exch2_ad_put/ad_get)
6350      - simplify argument list of S/R exch2_get_uv_bounds and exch2_get_scal_bounds
6351        (which replaces exch2_get_recv_bounds & exch2_get_send_bounds) by
6352        including Topology header file (and common blocks).
6353      - implement EXCH_IGNORE_CORNERS in scalar exchange (rx1);
6354        remove 2nd exch call in exch2_s3d_rx (no longer needed).
6355      - document S/R arg. list (+ update some comments)
6356    o pkg/seaice:
6357      - added SEAICE_CLIM_AIR code, which permits modulation of surface air
6358        temperature and humidity over sea ice based on climatological values.
6359      - clean up computation of Hibler+Bryan (1987) stress coupling for the case
6360        of LSR (this change is expected to change the results slightly because now
6361        it uses slightly difference moduli from the second last LSR solution, but
6362        that is more consistent with the stress computations; this part of the code
6363        is not tested in the verification experiments)
6364      - fix diagnostics for flux of ice in case of B-grid
6365      - turn strain rates eij and press into global fields within global
6366        common block in SEAICE.h for more straighforward diagnostics
6367      - fix diagnostics for principal stress components, press, zeta, eta
6368        to give something meaning full
6369    o change tiling of global_ocean.cs32x15 (12 tiles, 32x16) and generate
6370      new output (all 4 tests) using default rotationPeriod.
6371    o pkg KPP:
6372      - add flag (LimitHblStable) to avoid limiting BL depth under stable conditions
6373      - fix vertical indices in RI_IWMIX (match between KPP grid from 0 to Nr+1
6374        and normal grid from 1 to Nr)
6375    o Fix computations of L4rdt in mom_calc_visc.F
6376    o eesupp:
6377      new S/R ALL_PROC_DIE (like EEDIE, without irrelevant threads err msg):
6378      should be called before a "stop" if we know that all process are going
6379      to stop; if one Proc does call this S/R, will hang in MPI_FINALISE.
6380    
6381    checkpoint61o (2009/05/26)
6382    o pkg/exch2: change check_depths to issue just a warning (instead of error+stop)
6383    o model/src/ini_curvilinear_grid.F:
6384       compute angleSin/CosC when they are not read from a file
6385    o pkg/seaice:
6386       add pseudo time stepping for LSOR
6387    o pkg/exch2:
6388       temporary fix for exch2_s3d_rx; update results of exp. hs94.cs-32x32x5.impIGW
6389    o pkg/seaice:
6390       Adding separate sea ice albedo, drag coefficients, and HO in Southern
6391       Ocean from those in Arctic Ocean.  See *_south in SEAICE_PARAMS.h
6392    o SingleCpuIO:
6393       fix bug put before chkp61n (May 11), when more than 2 MPI cpu are used.
6394    o pkg/seaice:
6395       put exchanged variable in (local) common block for MPI+Multi-Threads
6396       to work (necessary with exch1, and for now with exch2 too).
6397    o verification: to get more experiments tested with mpi, mth and mpi+mth,
6398      change tiling of:
6399       aim.5l_Equatorial_Channel, aim.5l_LatLon, dome, exp4, global_ocean.90x40x15,
6400       hs94.cs-32x32x5, MLAdjust, offline_exf_seaice & tutorial_plume_on_slope
6401      update output of exp:
6402       exp4, global_ocean.90x40x15(+.dwslp), MLAdjust(all 5),
6403       tutorial_plume_on_slope and hs94.cs-32x32x5 (use default rotationPeriod)
6404      + ideal_2D_ocean: use default rotation period + test Global_Sum_SINGLECPU
6405                       (note: output.txt generated on faulks using only 1 tile)
6406    o eesupp & mdsio (SingleCpuIO):
6407     - remove MISSING_TILE_IO (from MDSIO_OPTIONS.h), replaced by run-time
6408       parameter "W2_useE2ioLayOut" (read from file "data.exch2").
6409       Note: was not effective for globalFile & useSingleCpuIO=F; now fixed.
6410     - move MDSIO_SCPU.h (pkg/mdsio) to EEBUFF_SCPU.h (eesupp/inc).
6411     - fix GLOBAL_SUM_SINGLECPU when using Exch2; re-use same buffers and same
6412       gather/scatter S/R as with SingleCpuIO (=> 1 less 2D global RL array).
6413    o pkg/exch2:
6414     - new code to set-up W2-Exch2 topology (replace matlab-topology-generator):
6415       read parameter file "data.exch2" if it exists; otherwise try default regular
6416       cube without blank-tile; new header file "W2_EXCH2_SIZE.h";
6417     - update matlab-topology-generator (exch2_setup_cs6_print.m) to be compatible
6418       with new code (not to be used, just as a backup solution).
6419     - add examples (e.g., for lat-lon-cap_120) of parameter file "data.exch2"
6420       in utils/exch2/input.
6421    
6422    checkpoint61n (2009/05/12)
6423    o eesupp & mdsio (SingleCpuIO):
6424      - move mapping to global io-buffer inside gather_2d/scater_2d: this save
6425        memory (1 less 2D global RL array); skip 1 buffer copy; and only send/
6426        receive real*4 array (instead of real*8) to read/write 32.bit files.
6427        (new template for gather_2d/scater_2d, new set of S/R MDS_PASS_R4,8toRL,S
6428         and remove new mapping S/R)
6429    o pkg/mdsio: in preparation for topology-generator within pkg/exch2:
6430      - Change declaration of SingleCpuIO buffer, reduced to only 1 dim.:
6431        xyBuffer_size, which is set to W2_ioBufferSize from W2_EXCH2_PARAMS.h
6432        when using exch2. Add S/R to map global io-buffer to global model array.
6433      - uses exch2_global_Nx,y instead of exch2_domain_nxt,nyt.
6434    
6435    checkpoint61m (2009/04/29)
6436    o write_utils : change WRITE_1D_R8 to WRITE_1D_RL
6437      and add 3 other S/R for other types (R4,R8,RS).
6438      Change calls to WRITE_0D/1D_R[4,8,S,L] to match the type of argument.
6439    o eesupp/inc/CPP_EEMACROS.h (EXCH & GLOBAL_SUM/MAX macros):
6440     - ensure suffix (_R4,_R8,_RS,_RL) correspondance between macro and S/R ;
6441     - reduce number of macro definitions (keep only those which are used);
6442       can always call directly the corrresponding S/R if needed.
6443     - everywhere in the code: change macros (EXCH & GLOBAL_SUM/MAX) suffix
6444       _R4/_R8 to _RS/_RL when applied to _RS/_RL variable.
6445     Fixed wrong type of arg in:
6446       atm2d/put_ocnvars.F cheapaml/cheapaml.F ocn_compon_interf/ocn_apply_import.F
6447       ctrl/ctrl_map_ini_ecco.F seaice/seaice_do_diags.F seaice/seaice_model.F
6448     To fix: global_sum of var in common block is wrong (multi-threaded) in:
6449       dic/dic_atmos.F ebm/ebm_area_t.F ebm/ebm_zonalmean.F sbo/sbo_calc.F
6450     To fix: aim_v23/aim_do_co2.F (BARRIER & GLOBAL_SUM within bi,bj loops)
6451    o adjustment.cs-32x32x1: test "blank tiles" when compiling with mpi; 2nd
6452      "nlfs" mpi test is going to stop when checking for unconnected tile egdes.
6453    o eesupp/src: new S/R to stop everyone when 1 (or more) Proc. find an error
6454    o pkg/exch2: new S/R EXCH2_CHECK_DEPTHS to check that unconnected tile
6455      edges are closed (zero depth); might happen with "blank tiles";
6456      for now, disabled if using OBCS.
6457    o tools/gemake2: delete modifs from March 27-29 2009 (with option "-mpi":
6458      link *_mpi files from "MODS" dir) to return to a strait-forward behavior.
6459    o move read_write.F to write_utils.F ; new parameter (maxLengthPrt1D)
6460      to reduce length of 1.D array print in STDOUT.
6461    o adjustment.cs-32x32x1: changed to oceanic test with 1 continent
6462      + use 48 tiles (16x8): this will allow to test "blank tiles".
6463    o start to test MPI + multi-threaded (change testreport to skip tests
6464      where number of tiles do not match).
6465    o genmake2: add option "-omp" to turn on Open-MP ;
6466      passed to testreport (if using -mth) ; merge few (*+mth) optfiles.
6467    o pkg/exch2 (+ utils/exch2): ignore blank tiles (instead of removing them)
6468      and keep the original tile numbering. Note: compatible with old
6469      W2_EXCH2_TOPOLOGY.h & w2_e2setup.F topology files.
6470    
6471    checkpoint61l (2009/04/07)
6472    o Overlaps had been forgotten in calculating ijk keys : fixed
6473    o fix cyrus makedepend for gcc 4.4
6474    o experiment fizhi-cs-aqualev20:
6475      switching to new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE)
6476      and generate new output. Note: new output is much closer to the old
6477      one (v1.8) generated with pgf77 -O2 on Mar 14 2007 than it is from
6478      the previous one (v1.9) generated with pgf77 -O0 on Jun 13 2007.
6479    o pkg/fizhi:
6480     - change to avoid indices going deliberately over array-bounds
6481     - remove unnecessary MPI stuff
6482     - perpetual spring equinox with "#define FIZHI_USE_FIXED_DAY"
6483     - new version of S/R GETPWHERE available with #define TRY_NEW_GETPWHERE:
6484       does not go over array-bounds and therefore returns reliable output.
6485     - in fizhi_driver.F & fizhi_turb.F, fix "get_alarm" calls:
6486       this S/R has 4 output arguments, which are used inside "get_alarm";
6487       when it is called with the same variable "ndum" in place of several
6488       output arguments, this produces weird side effect inside "get_alarm"
6489      (e.g., datein=dates(n) is overwritten by timein=times(n) since both
6490       datein & timein, resp. 2nd and 3rd arg., are pointed to the same "ndum"
6491       address) and produces error.
6492    o tools/gemake2: (March 27-29 2009)
6493      with option "-mpi": link *_mpi files from "MODS" dir (this is what
6494      testreport does).
6495    o lab_sea experiment: change from 2x1 tiles to 2x2 tiles and regenerate output
6496    o pkg/seaice: fix bug in new version of S/R SEAICE_LSR.F:
6497       update lab_sea.lsr & lab_sea.salt_plume results
6498    o pkg/seaice:
6499      Major overhaul of the LSOR solver: change discretization from original
6500      finite differences to finite volume. The old routine is still in the
6501      file seaice_lsr.F and can be turned on with the CPP-flag
6502      SEAICE_OLD_AND_BAD_DISCRETIZATION
6503      Along with this change, the discretization of the strain rates is changed.
6504      The same flag turns on the old discretization in seaice_calc_strainrates.F
6505      All verification experiments with seaice are affected (except for
6506      seaice_exf_offline); global_ocean.cs32x15/input.icedyn recovers the old
6507      results by setting the above flag.
6508      Further changes involve changes in defaults:
6509      - ALLOW_FLOODING is defined and turned on by default
6510      - SEAICEadvSnow = .true. is now the default
6511      - SEAICEadvSalt = .true. is now the default
6512      - SEAICEadvAge  = .true. is now the default
6513      - SEAICE_clipVelocities  = .false. is now the default
6514                                         (as per J. Zhang's recommendation)
6515      - B-grid, and thus not tested: SEAICE_TEST_ICE_STRESS_1/EXPLICIT_SSH_SLOPE
6516        is defined, SEAICE_TEST_ICE_STRESS_1 is renamed into SEAICE_BICE_STRESS
6517      - seaice_growth: replace computation of UG by a simple copy from wspeed
6518    
6519    checkpoint61k (2009/03/18)
6520    o pkg/seaice: a few bug fixes mostly concerning the metric terms:
6521      seaice_lsr: fixed a few metric terms,
6522                  affects lab_sea.lsr, lab_sea.salt_plume, seaice_obcs
6523                  add more debugging diagnostics
6524      seaice_evp: removed superfluous many metric terms of FV discretization
6525                  of stress divergence
6526                  affects lab_sea, lab_sea.hb87
6527      seaice_ocean_stress: removed superfluous many metric terms of FV discretization
6528                  of stress divergence for non-evp solver
6529                  (this part is not tested anywhere)
6530      seaice_calc_strainrates: fixed a bug in no-slip boundary conditions,
6531                  they were effectively only half slip
6532                  affects lab_sea.hb87
6533      updated all relevant verification experiments (except lab_sea//output_adm.txt
6534        which was left over, but fails at level 7 & 6)
6535    
6536    checkpoint61j (2009/03/17)
6537    o pkg/seaice: turn a few hard wired parameters into run time parameters
6538    o pkg/seaice/exf/monitor: turn netcdf coordinate variable T into model
6539      time in seconds as promised by the usints in seaice_monitor and exf_monitor
6540    o pkg/mnc: fix the coordinate variables for multi-tile curvi-linear grids
6541      that are not cubed-sphere grids
6542    o pkg/seaice: fix a bug for the rare case of SEAICE_VECTORIZE_LSR
6543    o pkg/ctrl:
6544      fix bug in ctrl_depth_ini.F (EXCH_XYZ was applied to 2-D field xx_r_low)
6545    o non-hydrostatic (calc_gw.F):
6546      fix viscA4 on CS-grid + fix diagnostics: Wm_Diss & Wm_Advec
6547      update output of exp. global_ocean.cs32x15.viscA4
6548    o remove backward compatibility for thetaMin,phiMin
6549      (replaced by xgOrigin,ygOrigin on Jan 27, 2009)
6550    o pkg/exf: fix a serious bug in exf_set_uv.F: do a rotation of the
6551      interpolated wind field not only for curvilineargrid=.true., but also
6552      for a rotated grid (rotateGrid=.true.)
6553    o pkg/exf: add capability to bypass interpolation for runoff
6554      by setting yet another CPP-flag
6555    o eesupp/src, B-grid exchange:
6556      add simple (6 tiles, non MPI) CS exch + standard interface S/R.
6557    o autodiff
6558      new CPP option ALLOW_TAMC_SINGLEPREC_COMLEV
6559      allows to switch to single-prec common blocks;
6560      corresponding switch occurs in tamc.h, integer isbyte
6561      TAF store directivs "byte" and "kind" seem equivalent;
6562      Most tamc.h have been updated correspondingly.
6563    
6564    checkpoint61i (2009/02/13)
6565    o autodiff:
6566      fix autodiff_sore/_restore indices for obcs
6567      (spotted by I. Hoteit, M. Mazloff)
6568    o pkg/autodiff, pkg/ctrl:
6569      Add flag to reduce all tapelev I/O to single-prec.
6570      In data.ctrl set
6571        doSinglePrecTapelev = .TRUE.
6572    o model/src/ini_curvilinear_grid.F, new grid-file format without EXCH2:
6573      check in hack for SX8 compiler (for dxV, dyU); remove it afterwards.
6574    o pkg/shelfice: fix bug with SHELFICEconserve flag, prepare for
6575      real fresh water flux (not yet)
6576    o pkg/mdsio & rw:
6577     - add argument & option to S/R MDS_WRITEVEC_LOC (avoid Open/Close & write-meta)
6578     - add simple interface S/R to MDS_WRITEVEC_LOC in pkg/rw: WRITE_GLVEC_RX.
6579    o pkg/flt:
6580     - replace FLT_INIT by 3-steps standard initialization S/R: readparms,
6581       init_fixed & ini_varia.
6582     - clean-up & simplify linear interpolation S/R:
6583       move flt_bilinear.F -> flt_interp_linear.F ; add arg. myThid.
6584     - fix some indices (mainly vertical index) ; add IMPLICIT NONE.
6585     - more efficient I/O, using new options of MDS_WRITEVEC_LOC S/R.
6586     - add vert. coordinate & horiz. indices to output files.
6587     - change vertical position in initial condition, from index to depth [m].
6588     - store horizontal (decimal) indices i,j in common block (instead of coord. x,y)
6589       (easier to get to a curvilinear grid) ; delX,delY no longer used.
6590    o pkg/ggl90: a few modifications:
6591     - fix bottom boundary condition, and interpolation of KappaE
6592       near top and bottom
6593     - use same set of viscosity/diffusivity for TKE/momnetum/tracer
6594     - add smoothing option as in Blanke and Delecluse (1993) (--> ALLOW_GGL90_SMOOTH)
6595     - add a few options for mixing-length upper limit (--> mxlMaxFlag)  
6596    o rename thetaMin,phiMin -> xgOrigin,ygOrigin
6597      (maintain temporary backward compatibility, until next checkpoint)
6598    
6599    checkpoint61h (2009/01/27)
6600    o pkg/diagnostics with "periodic averaging diagnostics":
6601      fix S/R DIAGNOSTICS_COUNT ; hack diagnostics_out.F to get NetCDF output.
6602    o pkg/my82: add missing "_d 0" ; update output of exp. vermix.my82
6603    o pkg/obcs: fix loop ranges for balancing code
6604    o pkg/flt:
6605     - improve criteria for finding which tile owns a float.
6606     - fix FLT_EXCH for case without MPI ; apply cyclic BC + fix also the MPI case.
6607    o Add well-mixed CO2 box in aim_v23 (which includes changes in pkg
6608      aim_compon_interf, ocn_compon_interf, gchem, and dic to get coupling
6609      with ocean biogeo)
6610    o pkg/flt:
6611     - do some cleaning and fix the restart ;
6612     - add output.txt in flt_example/results to get this pkg tested.
6613    o genmake2: add an EXTENDED_SRC option and flag.
6614       for now, cannot be turned on on command line (only through genmake_local)
6615    o pkg/mdsio: read/write vector:
6616     - singleCpuIO: fix RL/RS in MDSWRITEVECTOR by calling new S/R MDS_BUFFERtoRL/RS
6617     - singleCpuIO=F: fix arrType & filePrec & _BYTESWAPIO in both MDSREADVECTOR
6618       & MDSWRITEVECTOR by calling new S/R MDS_RD/WR_VEC_RL/RS.
6619     - affects gradient of test-exp "bottom_ctrl_5x5" (not due to _BYTESWAPIO)
6620      (drop to 4 digits matching for grad). But this test does not look very
6621      reliable (was already failling on eddy, fc5, at 6.digits). Update output.
6622    
6623    checkpoint61g (2008/12/29)
6624    o pkg/flt:
6625      - move FLT_CPPOPTIONS.h to FLT_OPTIONS.h (standard name)
6626       + make OPTIONS file more standard.
6627      - rename S/R MDSREADVECTOR_FLT to FLT_MDSREADVECTOR (to mach src file name)
6628      - fix _BYTESWAPIO CPP-Flag
6629      - standard reading of file-parameter "data.flt"
6630      - fix argument list of S/R FLT_RESTART
6631      still need to fix _BYTESWAPIO in pkg/mdsio/mdsio_writevector.F
6632    o pkg/obcs: fix a CPP-flag, bug reported by Jeff Blundell
6633    o gather_2d.F/scatter_2d.F: suppress vectorisation on NEC SX in respond to
6634      a still unfixed compiler/optimization bug
6635    
6636    checkpoint61f (2008/11/21)
6637    o pkg/seaice, LSR solver: fix bug in GLOBAL_MAX calls ;
6638      update results of global_ocean.cs32x15.icedyn test.
6639    o move getcon.F from model/src to pkg/fizhi.
6640    o pkg/exf: add parameter for extrapolation of temp up to the surface
6641       and option to prevent negative evap (in bulk_largeyeager04 only).
6642    o Prather Advection scheme: fix tracer conservation for divergent flow
6643      (e.g., when using NonLin Free-Surface).
6644    o kpp: retire KPPmld diagnostics --> use MXLDEPTH instead
6645    o gmredi (Visbeck-variable-K):
6646     - add more parameters to Visbeck-variable-K.
6647     - use a 5 points average for dSigmaR in Visbeck-K calculation
6648       (more "homogenous": same stencil and same weights as in dSigmaH)
6649     - update output of ideal_2D_oce experiment.
6650    o fix CPP-flag REAL4_IS_SLOW, when _RS expands into real*4
6651      (#undef REAL4_IS_SLOW)
6652     - pkg/mnc/mnc_cw_cvars.F: write _RS-grid variable as netcdf-real*4
6653       coordinate variable
6654     - pkg/monitor/monitor.F: call mon_printstats_rs for _RS variables
6655       (surface forcing fields), removes some of the functionality
6656     - model/src/write_grid.F: write _RS variables as RS-netcdf variables
6657     - model/src/diags_oceanic_surf_flux.F: fix a few diagnostics, but
6658       probably not all: copy _RS surface flux fields to RL field before
6659       calling DIAGNOSTICS_FILL
6660     - model/inc/CPP_EEMACROS.h: make the _EXCH_*_RS macros expand into
6661       real*4 (CALL EXCH_*_RS) versions.
6662     - tested in 2 experiments: inverted_barometer & solid-body.cs-32x32x1
6663       (generate new output).
6664    
6665    checkpoint61e (2008/10/23)
6666    o gmredi (Visbeck-variable-K):
6667      - fix the "OLD_VISBECK_CALC" option + move the #undef to GMREDI_OPTIONS.h
6668      - change computation of Visbeck-K where Slope > Smax :        
6669        now: N*min(Slope,Smax) (similar to OLD_VISBECK_CALC with gkw91 taperFct)
6670        previously was: M*sqrt(min(Slope,Smax)) ; update ideal_2D_oce output.
6671    o bottom-drag in P-coord.: change units of bottomDragLinear & bottomDragQuadratic
6672      to be the same as with Z-coord. (i.e., m/s & no-units respectively).
6673    o calc_viscosity: fix index range (was wrong for CD-Scheme & explicit Visc)
6674    o pkg gmredi, linear & fm07 tapering: put an upper limit on Slope^2 so that Kwz
6675      does not become too large (to avoid precision problems in implicit-diffusion
6676      solver); update ideal_2D_oce output.
6677    o pkg ggl90:
6678      - in ggl90_cal.F: compute only one set of visc/diff, used to
6679        step forward TKE/T/S/momentum
6680      - default value of GGL90viscMax/GGL90diffMax larger and equal (to
6681        have Prandlt =1)
6682    o gmredi (fm07):
6683      - add lower limit on Transition layer thickness + lower limit on 1/lambda
6684      - allow to set few more params from data.gmredi
6685    o pkg ggl90:
6686          - add missing sqrt(2) factor in computation of mixing length
6687            scale in ggl90_calc.F
6688            (see Eq. (2.35) in Blanke and Delecluse, JPO, 1993)
6689    
6690    checkpoint61d (2008/09/25)
6691    o adjoint modifs
6692      - adapt to new field rhoInSitu
6693      - allow to revert from StoreDynVars2D, StoreDynVars3D
6694        to individual fields
6695        (switches AUTODIFF_USE_OLDSTORE_2D, AUTODIFF_USE_OLDSTORE_3D)
6696    o store 3-D (in-situ) density in commom block (DYNVARS.h)
6697     - save 1 rho computation.
6698     - no longer modify T & S inland when using down_slope pkg.
6699    o gad_som : allow to switch to SOM advection for T & S without corresponding
6700      pickup files (using new S/R: MDS_CHECK4FILE).
6701    o keep removing _BEGIN/_END_MASTER between MDSIO S/R call
6702      (for useSingleCpuIO to work in multi-threaded)
6703    o pkg/shelfice:
6704     - disentangle parameters: retire shelfIceFile in data/PARM05 and substitute
6705       with SHELFICEtopoFile in data.shelfice
6706     - move code for reading ice shelf topography and modifying hFacC into separate
6707       subroutines of the shelfice package
6708     - separate initialisation of "fixed" and "variable" variables
6709     - kTopC is not (yet) replaced by kSurfC, although this is possible
6710    o fix broken diagnostic SIatmFW and changed the units from m/s to kg/m^2/s
6711    o add initialisation of deepFac if using Pcoords (new S/R set_grid_factors)
6712      and rename:
6713      ini_phiref.F          --> set_ref_state.F  (+ set anelastic factors)
6714      ini_reference_state.F --> load_ref_files.F (- set anelastic factors)
6715    o change FIND_RHO_SCALAR : return rho (instead of rho - rhoConst)
6716    
6717    checkpoint61c (2008/08/30)
6718    o add option ALLOW_ADDFLUID and run-time selector "selectAddFluid"
6719      to add mass source/sink of fluid in the interior (3-D generalisation
6720      of oceanic real-fresh water flux).
6721    o pkg/monitor: fix recip_dr argument in mon_advcflw2 call (-> advcfl_W_hf_max)
6722    o vermix test experiment: switch from LINEAR EOS to MDJWF (not tested before)
6723    o new pkg: down_slope
6724      density-driven downsloping flow parameterisation (Tellus, 1999, 412-430).
6725      - presently, modify T & S inland (dwnslp_calc_rho.F).
6726        can be avoided if rho was stored in common bloc and used in calc_phi_hyd.
6727      - implementation for ocean in P-coords not tested.
6728      - add secondary test to global_ocean.90x40x15 (input.dwnslp) to check this pkg.
6729    o move kSurfC,kSurfW & kSurfS from SURFACE.h to GRID.h (next to kLowC)
6730      (to facilitate conversion of oceanic pkg to p-coordinate).
6731    o change FIND_RHO to FIND_RHO_2D :
6732      pass arguments tFld & sFld as local (tile) 2D-arrays ; +fix EOS_CHECK.
6733    o new pkg: cheapaml
6734    
6735    checkpoint61b (2008/08/05)
6736    o exch2:
6737      change index bounds in rx2_cube exchanges (new S/R: EXCH2_GET_UV_BOUNDS)
6738      - no longer depend on the order sequence (N,S,E,W).
6739      - 3rd exchange no longer needed (tested with 24 tiles).
6740      - same modif to hand-written adjoint S/R (global_ocean.cs32x15: zero diff)
6741      - exch_UV_A-grid readily available (but not yet tested).
6742      comment out 3rd exch call and remove copy of V to U at SE & NE face-corners
6743      (both are no longer needed) in exch_uv: no effect in forward run; but
6744       get truncation error differences with adjoint exch.
6745    o exch2:
6746     - change index-bounds storage (moved from target to local tile,
6747       more intuitive this way) ; rename/remove some variables.
6748     - change utils/exch2/matlab-topology-generator & code_mods accordingly.
6749    
6750    checkpoint61a (2008/07/29)
6751    o exch2/matlab-topology-generator:
6752      fix bug in index bounds for N-S internal exchange (hard to tell if this
6753      had any effect on the solution).
6754    o pkg/mnc: small fix in mnc_handle_err: make sure that length of msgbuf
6755      is exceeded
6756    o testreport: modify syntax of awk, so that it works also with
6757      awk, and not only with nawk and gawk
6758    
6759    checkpoint61 (2008/06/24)
6760    o autodiff
6761      Change default for TAF usage by removing argument '-nonew_arg'
6762      This changes TAF subroutine argument list (ordering of active var.)
6763      Omission of this flag leads to incompatibility w.r.t. TAMC
6764      To restore TAMC-compatibility, need following modifs:
6765      * use adoptfile tools/adjoint_options/adjoint_tamc_compatibility
6766      * use CPP option #define AUTODIFF_TAMC_COMPATIBILITY
6767      Tested TAF version is 1.9.22
6768      N.B.: exch2 hand-written adjoint code currently not TAMC compatible
6769    
6770    checkpoint60 (2008/06/19)
6771    --->>> This is the last checkpoint for which generating the adjoint
6772    --->>> is done via the TAMC-compatibility TAF-flag "-nonewarg"
6773    --->>> by default.
6774    --->>> Future checkpoints will ommit this flag by default.
6775    o pkg/generic_advdiff, os7mp: simplify and avoid division by zero.
6776    o pkg/grdchk: Add gradient check to etan0 perturbations.
6777    o pkg/exf: read ice area from file (#ifdef ALLOW_ICE_AREAMASK).
6778    o pkg/autodiff: more flexibility in zeroadj.
6779      model/src: modifying do_oceanic_phys.F accordingly.
6780    o pkg/ctrl: Bounds for (kapgm,kapredi,eddypsi) parameter estimation.
6781    o model/src and pkg/gmredi: GMREDI_WITH_STABLE_ADJOINT CPP option
6782      special setup of gmredi for which the adjoint is stable
6783      enough for parameter optimization.
6784    o bridging the gap between eddy stress and GM.
6785      -> eddyTau is replaced with eddyPsi (eddyTau = f x rho0 x eddyPsi)
6786          along with a change in CPP option (now ALLOW_EDDYPSI).
6787      -> when using GM w/ GM_AdvForm:
6788          The total eddy streamfunction (Psi = eddyPsi + K x Slope)
6789          is applied either in the tracer Eq. or in momentum Eq.
6790          depending on data.gmredi (intro. GM_InMomAsStress).
6791      -> ALLOW_EDDYPSI_CONTROL for estimation purpose.
6792      The key modifications are in model/src/taueddy_external_forcing.F
6793      pkg/gmredi/gmredi_calc_*F pkg/gmredi/gmredi_*transport.F
6794    
6795    checkpoint59r (2008/05/29)
6796    o new S/R (pkg/mdsio/mdsio_facef_read.F) reading of sNx+1 x sNy+1 array
6797      from per-face file (take S/R READSYMTILE_RS out of ini_curvilinear_grid.F);
6798      fix option to read coriolis(@ cell-corner) from files with CS-grid.
6799    o pkg/mnc: add some attributes to standard 1D-coordinate variables
6800    o pkg/diagnostics: enforce missing_value attribute for scalar variables at
6801      mass points, when using mnc for output
6802      - add runtime parameter (missing_value, missing_value_int) to override
6803        default (which is the value of getcon('UNDEF'))
6804    o pkg/mnc: prepare mnc for the actual use of missing values with the
6805      diagnostics package: small fix in mnc_cw_readwrite.template and more
6806      initialisation of never used fields
6807      - replace mnc_common.h and mnc_id_header.h with corresponding upper case
6808      versions
6809    o pkg/thsice/thsice_ini_vars.F added default initial values so that
6810      thermodynamics sea ice solver does not blow up when some initial fields
6811      are missing.
6812    o move from external_forcing_surf.F to ini_forcing.F
6813      the p-coord. hack consisting in using pLoad to set phi0surf ;
6814      update output of tutorial_global_oce_in_p (affected @ truncation level).
6815    o Freshen up a bit hs94.1x64x5, notably:
6816      remove rotationPeriod and tRef=5*0. (adjoint only), and add
6817      exactConserv=.TRUE.
6818    o pkg/generic_advdiff:
6819      change option GAD_ALLOW_SOM_ADVECT to GAD_ALLOW_TS_SOM_ADV which only
6820      applies to files where Temperature & Salinity 2nd Order moments are used.
6821    o pkg/ptracers: add second-order moment advection schemes (80 and 81);
6822      this uses a dynamically allocated internal state data structure
6823      (#define PTRACERS_ALLOW_DYN_STATE in PTRACERS_OPTIONS.h)
6824      and requires a fortran 90 compiler
6825    
6826    checkpoint59q (2008/05/06)
6827    o pkg/mom_vecinv: Add energy & enstrophy conserving scheme (selectVortScheme=3)
6828       (from Sadourny, described by Burridge & Haseler, ECMWF Rep.4, 1977)
6829    o Refresh tutorial_global_oce_biogeo, notably:
6830      - change bathymetry (put back seamounts in ACC, use hFacs)
6831      - change EOS (POLY3 --> JMD95Z)
6832      - use Bryan-Lewis vertical diffusivity
6833      - use multidimensional advection
6834      - remove old virtual virtual in dic pkg, now done through ptracer pkg
6835      - change a couple of parameters in dic pkg
6836    o pkg/ctrl: change formula in adctrl_bound.F and add a parameter to ctrl_map_ini_gen.F
6837    o pkg/obcs: change default to OBCSfixTopo = .true.,
6838      - set OBCSfixTopo=.false. in exp4/input/data.obcs to reproduce old result
6839      - replace "debugMode" with "debugLevel .GE. debLevB"
6840    o implementation of TAF directives for gchem,cfc,dic
6841    o remove "exp5" (replaced by tutorial_deep_convection).
6842    o pkg/obcs: add code to fix topography gradients normal to open boundaries;
6843      this requires computing the index fields OB_Jn/Js/Ie/Iw in obcs_readparms;
6844      the code can be turned on by setting OBCSfixTopo = .true. in data.obcs
6845      --> changes results in exp4, seaice_obcs
6846    o tutorial_deep_convection :
6847      update the set-up and increase resolution and domain size ; start
6848      from pseudo initial conditions = output at t=120mn in order to see
6849      something happening when running testreport.
6850    o pkg/seaice: add os7mp as an advection scheme
6851                  add check for advection schemes
6852                  add a flag for restoring T and S underneath sea ice
6853    o pkg/my82: add netcdf-support and diagnostics
6854    o thsice pkg:
6855      - Now hsMax limits snow height by turning it into ice following
6856        flooding scheme (and now conserving energy)
6857      - Slight rewriting of the formula in thsice_calc_thick.F
6858      - Parameter rhowi eliminated to be replaced by floodFac = (rhosw-rhoi)/rhos
6859      --> changes results of global_ocean.cs32x15.icedyn and global_ocean.cs32x15.thsice
6860    
6861    checkpoint59p (2008/04/10)
6862    o gchem / dic / cfc :
6863      - add useDIC, useCFC , read from "data.gchem" (& hold in GCHEM.h);
6864      - add new parameter files: "data.dic" & "data.cfc" ;
6865      - various re-arrangement in initialisation & header file ;
6866      - fix tutorial_global_oce_biogeo for multi-threaded test.
6867    o pkg/dic: test for "pickup_dic" file when restarting ;
6868      if no pickup-file, can restart with a re-initialised pH (same as it did
6869      before) providing pickupStrictlyMatch is set to False.
6870    o change argument list of S/R PTRACERS_WRITE_PICKUP & MYPACKAGE_WRITE_PICKUP
6871      + fix call to S/R GGL90_WRITE_PICKUP & DIC_WRITE_PICKUP
6872    o add a "warning" (to Error msg file) when an Active Tracer is not using AB-2
6873      and staggerTimeStep is off (needed for stability of Internal-wave dynamics).
6874    o move out of PARAMS.h & data the last pieces of old-ptracer code: tauTr1ClimRelax,
6875     & lambdaTr1ClimRelax ; put those 2 params in PTRACERS_PARAMS.h & data.ptracers
6876       (note: not clear to me what lambdaTr1ClimRelax is still used for ...)
6877    o pkg/mom_vecinv: - new parameter "selectVortScheme" to select which
6878       scheme to use for vorticty-term ;
6879     - compute upwindVorticity=T case within mom_vi_u/v_coriolis_c4.F
6880       (with default selectVortScheme, return to original discretisation)
6881     - remove weird combination (e.g.: upwindVorticity & highOrderVorticity)
6882    o pkg/seaice: add a line to the summary to indicate grid type (B/C)
6883    o in mom_calc_visc, fix average value of viscAh_W & viscA4_W next to the
6884      bottom ; only used with variable horizontal viscosity and non-hydrostatic.
6885      also fix diagnostics VISCAHW & VISCA4W.
6886    
6887    checkpoint59o (2008/03/07)
6888    o dome/code/obcs_calc.F: avoid division by zero (detected using gfortran).
6889    o change the loop ordering in most gad_*_adv_x.F to improve vectorization:
6890      move a few statemens out the main loop into separate loops
6891    o pkg/shelfice:
6892      - sort out freshwater flux; convert freshwater fluxes to mass fluxes
6893        (kg/m^2/s), does not break tests, because in verification/isomip,
6894        rhoConstFresh=rhoConst (by accident)
6895      - rearrange computation of tLoc, sLoc, pLoc to make code more efficient
6896      - move S/R find_rho_scalar, pkg/ecco/sw_ptmp.F, pkg/ecco/sw_adtg.F into
6897        new file model/src/seawater.F, so that they are available for all pkgs.
6898      - convert potential temperature into in-situ temperature. This changes the
6899        isomip tests => update tests
6900    o add a flag writePickupAtEnd (default=true) to be able to suppress
6901      writing a pickup at the last timestep
6902    o tools/mpack-1.6 :
6903      - disable automake (not working) and autoconf (not needed).
6904      - update to version 1.6.4 which fix MD5 code on some 64 bits platforms
6905        also cleaner with much less compilation warnings.
6906    o pkg/profiles:
6907      rename profiles_interp_mean_genericgrid as profiles_interp_mean_gg
6908      (for "less than 32 characters name" compiler requirement)
6909    o pkg/obcs and pkg/exf: added capability to specify seaice open boundary
6910      conditions that have a different sampling frequency than S/T/U/V obcs
6911    o pkg/diagnostics (stats-diags):
6912      - fix global Min/Max in case 1 processor get only empty tiles
6913    o genmake2: replace (4 times)
6914         make genmake_tc_1.o >> genmake_warnings 2>&1
6915      with
6916         COMM="$CC $CFLAGS -c genmake_tc_1.c"
6917         echo $COMM >> genmake_warnings
6918         $COMM >> genmake_warnings 2>&1
6919      to make genmake2 always see the value of CC as specified in the optfile.
6920    o generic_advdiff: - prather advection scheme (SOM) coded for CS-grid.
6921      - add diagnostics for 1srt & 2nd Order moments and sub-grid variance.
6922      - modify verification advect_cs test to test SOM-advection on CS-grid.
6923    o pkg/ctrl:
6924      - Rewrite of ctrl_map_ini_ecco.F,
6925        introducing a generic routine (ctrl_map_ini_gen.F).
6926      - Modification of ctrl_bound/adctrl_bound handling control vector bounds.
6927    
6928    checkpoint59n (2008/02/09)
6929    o pkg/diagnostics: for large number of diagnostics, store diagnostic mate
6930      number in dedicate array "hdiag":
6931      - new version of S/R DIAGNOSTICS_ADD2LIST : DIAGNOSTICS_ADDTOLIST
6932        with 1 more argument (mate number); modify old version DIAGNOSTICS_ADD2LIST.
6933      - many small changes (integer format) for large number of diagnostics
6934      - start to use DIAGNOSTICS_ADDTOLIST (necessary for diagnostics with
6935        a counter mate) in pkg diagnostics, ptracers, thsice & aim_v23.
6936    o add parameter rotateGrid and Euler angles EulerPhi/Theta/Psi. For
6937      usingSphericalGrid, this allows to define the rotated grid coordinates
6938      via phiMin/thetaMin/dxSpacing/dySpacing, etc., but then re-compute the
6939      geographical coordinates according to the inverse of the rotation defined
6940      by the Euler angles, so that Coriolis parameter and online-interpolation by
6941      exf works with the geographical coordinates on XC/YC/XG/YG.
6942      Naturally, this feature does not work with all packages, so some
6943      combinations are prohibited in config_summary (flt, flt_zonal, ecco,
6944      profiles), because there the coordinates are assumed to be regular
6945      spherical grid coordinates.
6946    o pkg/gmredi,ctrl,ecco,autodiff,grdchk and model/src,inc:
6947      - introduce isopycnal diffusion coefficient control.
6948    o tools/adjoint_options:
6949      - additional control vector components.
6950    o pkg/mnc: have mnc create marginally meaning full coordinate variables
6951      (that is the grid indices) if usingCurvilinearGrid and NOT EXCH2
6952    o pkg/mypackage:
6953      - add example of read/write pickup for state-var ;
6954      - add entry points to the main code for state-vars diags & write-pickup.
6955    o pkg/exf: rewrite of exf_getffieldrec.F to properly deal with year
6956      transitions for useExfYearlyFields
6957      - add new subroutine that determines the file to read from for
6958        use*YearlyFields = .TRUE. and .FALSE.
6959      - add a verification experiment to global_with_exf that tests
6960        useExfYearlyFields with USE_EXF_INTERPOLATION defined
6961    o pkg/obcs/exf: add useOBCSYearlyFields (=.FALSE.) to obcs with exf in
6962      analogy to useExfYearlyFields; rearrange obcs_prescribe_read: two new
6963      subroutines (which could be generated from a template, because they are
6964      almost identical), for now they are included in obcs_prescribe_read.F for
6965      simplicity
6966    o pkg/exf:
6967      - add a little more diagnostic to exf_interp_read (in analogy to
6968        mds_read_field, can be turned off with debugLevel < debugLevA=1)
6969      - improve vectorizability of exf_interp for TARGET_NEC_SX, makes code
6970        ugly but fast by unrolling short inner loops, inserting a unroll=8
6971        directive in routine lagran, and splitting a loop and making do while the
6972        outermost loop (the latter requires the intoduction of index arrays)
6973    o pkg/obcs: replace obcs_apply_area/heff/hsalt/hsnow with obcs_apply_seaice
6974    o pkg/seaice: moved DIFFERENT_MULTIPLE from seaice_model to seaice_dynsolver
6975      http://forge.csail.mit.edu/pipermail/mitgcm-devel/2008-January/003173.html
6976    o verification/seaice_obcs: updated for restart test and latest options
6977    o pkg/seaice: add a new flag SEAICEuseTEM to use a slightly different
6978      ice rheology (so-called truncated ellipse, that gets rid of tensile stress);
6979      for now this is only available for the C-grid code and also within
6980      #ifdef SEAICE_ALLOW_TEM, because this option may slow down the EVP code
6981    
6982    checkpoint59m (2008/01/14)
6983    o pkg/seaice: use different time constant for melting (SEAICE_gamma_t)
6984      and freezing (SEAICE_gamma_t_frz) ice due to mixed layer temperature
6985    o gad_som : fix flux output (& diagnostics) to have same units as other  
6986      advection scheme fluxes (was previously multiplied by deltaT).  
6987    o added verification/seaice_obcs both to test seaice open boundaries
6988      and to provide an example matlab scrpt for generating them
6989    o added verification/lab_sea/input.salt_plume for testing pkg/salt_plume
6990    o pkg/salt_plume: clean up salt_plume_frac.F to
6991      remove redundancy in PlumeMethod 1 and 4
6992    o pkg/kpp: added saltplume diagnostics
6993    o pkg/obcs and pkg/seaice:
6994      - do not set uice and vice to zero when OB*icefile are unspecified
6995      - OBCS_SEAICE_AVOID_CONVERGENCE is undefined by default
6996      - moved seaice tracer obcs after call to seaice_growth
6997    o pkg/salt_plume: added various options for salt plume depth
6998      criterion and for vertical distribution of the salt
6999    
7000    checkpoint59l (2007/12/18)
7001    o pkg/ptracers: new version of ptracers pickup:
7002      read meta file and write only fields which are needed to restart.
7003      ( same logic as main pickup file ; also using pickupStrictlyMatch )
7004    o pkg/seaice:
7005      - add timescale for melting due to warm mixed layer as a means of
7006        setting SEAICE_availHeatFrac more conveniently
7007      - add a CPP-flag/runtime parameter check for flooding algorithm
7008      - reformulated availHeat in seaice_growth.F to be independent of AREA
7009    o change units attribute of EmPmR netcdf variables to kg/m^2/s to reflect recent
7010      unit changes
7011    o pkg/obcs: added OBCS_SEAICE_AVOID_CONVERGENCE constraint
7012    o cg2d.F: add 3 compiler directives that speed up this routine by 30% on a NEC
7013      SX vector computer.
7014    o pkg/seaice:
7015      - removed SEAICE_FFIELDS.h and seaice_get_forcing.F
7016        seaice forcing fields can now be read only through pkg/exf
7017      - removed some unused halos
7018    o no longer write pickup from THE_MODEL_MAIN but always from FORWARD_STEP
7019    o pkg/exf: added useRelativeWind EXF_PARAM.h option for subtracting U/VVEL
7020      or U/VICE from U/VWIND before computing U/VSTRESS
7021    
7022    checkpoint59k (2007/11/30)
7023    o pkg/seaice: ICE2WATR=SEAICE_rhoIce/rhoConst for consistency between
7024      dynamics and thermodynamics. Set ICE2WATR=0.92 to reproduce older results.
7025    o fix un-initialised variable problem (in mom_vecinv & shap_filt):
7026      all experiments pass when compile with un-initialised var. checking option.
7027    o added pkg/salt_plume
7028    o script to test restart (for now, in MITgcm_contrib/jmc_script)
7029    o pkg/seaice: new read/write pickup version.
7030      read meta file and write only fields which are needed to restart.
7031      ( same logic as main pickup file ; also using pickupStrictlyMatch )
7032    o pkg/seaice: fix bug in seaice_ocean_stress (call of seaice_calc_strainrates)
7033    o lab_sea.hb87: modify the domain & update output.hb87.txt :
7034      lat-long grid & no-slip BC in seaice-dynamics produce different sigma12
7035      at j=1 & j=Ny+1 : this case is not treated correctly in the restart
7036      process. Fixed here by closing the domain at the Northern boundary.
7037    o pkg/rw: cleaning-up: call directly new MDSIO S/R MDS_READ/WRITE_FIELD.
7038    o pkg/mdsio: add new arguments to MDS_READ/WRITE_FIELD for reading/writing
7039      a set of consecutive levels in/from a 3-D array.
7040    o pkg/ptracers:
7041      use a 2 characters string ioLabel to identify tracer (if more than 99 tracers).
7042      to-do: fix pkg/diagnostics when large number of diagnostics are defined.
7043    
7044    checkpoint59j (2007/11/09)
7045    o in pkgs: dic, obcs, offline, rbcs:
7046      standard way to compute coeff. for time interpolation between 2 time reccords
7047      which retains full precision (& make results less dependent on compiler).
7048      update output of exp: tutorial_cfc_offline & tutorial_global_oce_biogeo.
7049    o pkg/cfc: if compiled with exf and seaice, cfc now can use fields from those
7050      packages instead of reading ice cover and wind speed separately
7051    o split PTRACERS.h in 2 header files: PTRACERS_FIELDS.h & PTRACERS_PARAMS.h
7052     (keep a temporary version of PTRACERS.h in verification/OpenAD/code_ad_openad
7053      to allow to compile customized code before the update)
7054    o cleaning-up:
7055      - fix CPP instruction syntax in pkg/obcs
7056      - replace (some) call to MDSIO S/R with call to RW interface S/R ; and
7057        add #ifdef ALLOW_MDSIO elsewhere (allows to compile without pkg/mdsio)
7058      - fix some threads issue in IO parts.
7059    o pkg/dic:
7060      - add tons of "_d 0" (--> much better testreports !)
7061       and then update outputs of tutorial_global_oce_biogeo
7062    o pkg/mom_fluxform:
7063      add a special version of momentum advection intended to conserve momentum
7064      next to a bathymetry step or a coastline edge. (default = off = #undef)
7065    o new read/write pickup version:
7066      - for now, only implemented for main (mdsio) pickup file.
7067      - write out only what is needed to restart; merge pickup_nh , pickup_ph
7068        and main pickup together.
7069      - read meta file; read only what is needed to restart; stop if a field
7070        is missing (if pickupStrictlyMatch=T, = the default) or try to restart
7071        if it make sense (even if the restart is not perfect).
7072      - if no meta file, assume that pickup to read corresponds exactly to
7073        a pickup that would currently be written.
7074      - read pickup written in the old format (until checkpoint59i) if it
7075        recognizes an old meta file (no field-list).
7076      - add a meta file in exp. which starts from a pickup: 2 cases:
7077        a) minimal meta file (with just file precision) + pickupStrictlyMatch=F
7078         e.g.: global_ocean.90x40x15/input/pickup.0000036000.meta
7079        b) a meta file describing the content of the associated pickup file
7080         e.g.: tutorial_global_oce_biogeo/input/pickup.0004248000.meta
7081    o pkg/mdsio & pkg/rw:
7082      - new routine to read a meta file ; new set of routine to read
7083        Multiple-fields file (with meta file).
7084    o added open boundary conditions capability for seaice
7085        HSNOW, HSALT, UICE, and VICE
7086    
7087    checkpoint59i (2007/10/21)
7088    o adjoint:
7089      * fix multiDimAdvection adjoint
7090        (partial recomputation problem by TAF for fVerT(:,:,kDown)
7091        and comlev1 size definition (maxpass vs. max. number of tracers)
7092      * verification/global_ocean.90x45x15 adjoint now tests
7093        NLFS and multiDimAdvection using DST3 (=30)
7094      * verification/lab_sea now tests multiDimAdvection using DST3 (=30)
7095    o pkg/kpp: add "_d 0" to real constant (if missing);
7096      update output of exp: natl_box (10.digits); vermix (std, 7.digits)
7097      and lab_sea, 3.FW (only 6,4,6 digits match) & AD (8.digits).
7098    o prepare for "clever pickup" implementation: add new header file "RESTART.h"
7099      for internal parameters related to restart process (formerly from PARAMS.h)
7100      and add startAB parameter to argument list of S/R ADAMS_BASHFORTH2.
7101    o more standard interface to {PKG}_WRITE_PICKUP with pickup suffix passed
7102      as argument. (only atm2d & obcs write_pickup have not yet been updated)
7103    o pkg/monitor:
7104      - use GLOBAL_SUM_TILE instead of _GLOBAL_SUM
7105      - fix mon_stats_rs (statistics over the full domain, even where field is zero)
7106      - account for deep Atmosphere factor and density factor (anelastic)
7107    o added open boundary conditions capability for seaice HEFF and AREA
7108    o pkg/shelfice: add option for convservative form of Hellmer&Olbers (1989)
7109      thermodynamics
7110      - requires a little reorganization, which affects the testreport results
7111        of isomip.htd (only 7 digits of cg2d agree) => update/modify experiment,
7112        so that now the conservative form is tested
7113      - add a few comments
7114    o add missing cvs Header: or Name: in eesupp/*, pkg/* & verification/code*
7115    o add a little bit of code to gad_os7mp_adv_?.F to help vectorization
7116    o add new diagnostics to seaice: advective, diffusive fluxes (only for
7117      multidim-advection, for scheme 2 they are not filled) and transports,
7118      thermodynamic growth rates
7119    o change units of EmPmR (inside the code, + within coupling interface)
7120      from m/s to kg/m2/s (mass flux) but leave input file unchanged.
7121      Affects results @ truncation level (cg2d match) and update output of
7122       experiments: lab_sea(6), global_ocean.90x40x15(10),
7123      global_ocean.cs32x15(11x3,10), natl_box(11), tutorial_global_oce_latlon(11)
7124      + adjoint results: global_ocean_ebm(11) and lab_sea (12).
7125      Coupled set-up: allow to restart from previous pickups (cpl_oldPickup=T).
7126      Next: will retire convertEmP2rUnit (simply using mass2rUnit instead).
7127    
7128    checkpoint59h (2007/09/29)
7129    o pkg/exf:
7130      - improve vectorization by moving if-statement out of loops in
7131        exf_mapfields, exf_radiation
7132      - exf_bulkformulae.F: introduce 2D fields and vectorize code
7133    o pkg/kpp: added the salt plume scheme (ALLOW_SALT_PLUME) to KPP package
7134    o testreport:
7135      - allow to test for Qnet & SeaIce monitor output; clean-up ALLOW_BULK_OFFLINE
7136        monitor & update offline_exf_seaice exp. output.
7137      - AD testing: pass/FAIL according to Grad. output accuracy (instead of Cost)
7138    o pkg/seaice:
7139      - bug fix in the evp solver: boundary conditions were affected be
7140        masking of zMax/zMin (changes results)
7141      - minor bug fix in boundary conditions in seaice_calc_strainrates
7142        (changes results for no_slip)
7143      - seaice_lsr.F: make interpolation of eta dependent on boundaries
7144      - replace hardcoded lower limit for zeta (zMin) by runtime parameter
7145      - add a test to lab_sea, that tests the Hibler and Bryan (1987) ocean
7146        stress formulation and no-slip boundary conditions
7147    o pkg/ptracers: Temporary fix for PTRACERS_useGMRedi & PTRACERS_useKPP
7148      in gad_calc_rhs.F ; add few safety stops in initialisation phase.
7149    o pkg/seaice: a first HSALT time stepping equation has been checked in
7150    o pkg/seaice: replaced maskW with seaiceMaskU and maskS with seaiceMaskV
7151      in seaice_lsr.F; this solves the pkg/seaice-pkg/obcs problem
7152      without requiring DO-IF statements
7153    o pkg/thsice:
7154      use continuous power-law function for partition of energy between lateral
7155      melting/freezing and thinning/thickening ; old code using step function
7156      still available with #undef THSICE_FRACEN_POWERLAW
7157      update output of exp: aim.5l_cs.thSI, global_ocean.cs32x15.icedyn & .thsice
7158    o testreport: change AD testing : check against results/output_adm.txt
7159      using same scripts as for forward test.
7160    
7161    checkpoint59g (2007/09/17)
7162    o adjoint testing: in preparation for changing testreport:
7163      - output format: cost and grad written on separated lines
7164      - ad output results in directory "results" (instead of "results_ad")
7165    o pkg/seaice: adding ice salinity HSALT as a prognostic variable
7166    o pkg/seaice: changes for using pkg/seaice with pkg/obcs
7167    o pkg/ecco: allow user defined cost function contributions
7168    o testreport:
7169      Allow to choose (per experiment) the list of tested output variables
7170       and the main variable (used to issue a pass/FAIL ) ;
7171      - for now, done by adding the specific list in file: [exp]/input/tr_checklist
7172      - default is unchanged: >cg2d< , (T,S,U,V,5 tracers)_[min,max,mean,StD] ;
7173      Also modify printing of summary:
7174       a) ">" NN "<" indicates the "main" variable (used for pass/FAIL)
7175       b) echo the list of tested variables in the individual summary.txt of
7176          each experiment.
7177    o new S/R GLOBAL_SUM_TILE to compute global sum independently of number of
7178      threads and number of processes (with #define GLOBAL_SUM_SEND_RECV)
7179      (but still depend on the tile decompostion of the domain).
7180    o pkg/seaice: change a discretization detail to make the B-grid code
7181      "more symmetric". This change is likely to remove all "ridges/leads" that
7182      where quasi-aligned with the grid in B-grid solutions. It may also be
7183      the solution to the stress coupling issues with the B-grid.
7184    o each tested exp: add a "run" directory with a standard ".cvsignore" file ;
7185      remove .cvsignore from input dir. (since testreport no longer run here).
7186    o pkg/thsice:
7187     - cleaning: move common block out of "THSICE_2DYN.h" (removed) to "THSICE_VARS.h"
7188     - fix reshaping of sea-ice just after advection:
7189       melt all the ice only if ice-volume is too small.
7190     - re-visit lateral/thinning repartition of melting (modifs from May 04, 2007):
7191       prevent lateral melting if sea-ice fraction is too close to iceMaskMin ;
7192     and update experiment global_ocean.cs32x15.icedyn (+start from pickup files).
7193    o external_forcing_surf : extend the use of salt_EvPrRn & temp_EvPrRn (fresh-water
7194      tracer content) to linFS or no RealFreshWaterFlux ; default remains unchanged.
7195    o define mass2rUnit & rUnit2mass as units conversion factor, used for surface
7196      forcing. mass2rUnit: from mass per unit area [kg/m2] to r-coordinate unit
7197      (z-coord: =1/rhoConst ; p-coord: =gravity) ; rUnit2mass is just the reverse;
7198      and remove horiVertRatio (& recip_horiVertRatio). Affects truncation error
7199      of exp. global_oce_in_p: 10 16 16 14 16 13 16 16 16 13 13 13 16 13 13 12 16
7200      -> update output.txt
7201    o pkg/cd_code: add brackets in multiple terms sum (S/R CD_CODE_SCHEME):
7202     this affects truncation error: -> update output.txt of exp:
7203      global_ocean.90x40x15 (fw&adm), lab_sea (fw&adm) & lab_sea.lsr,
7204      ideal_2D_oce, isomip.htd, natl_box, tutorial_global_oce_latlon.
7205    
7206    checkpoint59f (2007/08/21)
7207    o pkg/autodiff: zero_adj resets an ajoint variable to zero (in adjoint mode)
7208    o pkg/ctrl: ctrl_bound  forces parameter corrections to stay in
7209      a bounded range (in forward mode)
7210    o pkg/ecco, ctrl, autodiff and mom_common:
7211     internal parameter controls, completements of implementations
7212    o add few EXCH S/R (UV_BGRID, UV_DGRID, SM) for B & D-Grid velocity & 2nd Moment Sxy.
7213    o use UV_BGRID exch for dxV,dyU: for now, only with pkg/exch2 & forward ;
7214      (not seem any difference in testing results).
7215    o pkg/cd_code: use the right EXCH calls (for CS-grid); but problem remains
7216       at face corners.
7217    o pkg/generic_advdiff:
7218     - in GAD.h, define as parameters (iMinAdvR,iMaxAdvR,jMinAdvR,jMaxAdvR)
7219      loop range indices for computing vertical advection tendency
7220      and do the calculation in the interior only (no overlap) ;
7221      for now, only implemented for SOM advection (to save CPU time).
7222     - add argument "withSigns" to S/R FILL_CS_CORNER_TR_RL (needed for SOM_xy moment)
7223    o exch2 adjoint
7224      First set of changes:
7225      - add exch2 hand-written adjoint templates
7226      - exch2 hand-written no longer use TAF-flag 'nownew_arg'
7227        This will require cleanup in pkg/autodiff/*.F
7228        (changed routines currently kept separate in verif. code/)
7229      - Comment all relevant #ifndef ALLOW_AUTODIFF_TAMC
7230        that used to hide exch2 or cubed-sphere specific code
7231        (commented via 'cph-exch2')
7232    o pkg/seaice
7233      - Close southern and western boundaries for UICE/VICE when useOBCS=.TRUE.
7234    o pkg/bulk_force: fix loading into Qsw of Short-Wave flux; and update
7235       output of global_ocean.cs32x15.thsice .
7236    
7237    checkpoint59e (2007/07/26)
7238    o exch2: new S/R that only use the cube-tracer (center-position) exchange:
7239      for B-grid vector (not yet tested) and C-grid vector (<- only used
7240      when option W2_USE_R1_ONLY in W2_OPTIONS.h is defined).
7241    o starting implementation of Duffy et al. (GRL 1999) salt plume scheme
7242      (#ifdef ALLOW_SALT_PLUME)
7243    o gather_2d/scatter_2d: removed halo regions
7244    o gmredi: add option (GM_taper_scheme='fm07') for Ferrari & McWilliams 2007
7245      scheme and the corresponding test case (under front_relax dir). For now,
7246      only available with Skew-flux form and not yet tested in realistic set-up.
7247      adjoint: store directives updated, but gradient checks deteriorated,
7248      so maybe GM/Redi adjoint is now broken.
7249    o seaice adjoint
7250      * add AREA, HEFF, HSNOW as control variable
7251        (should not change lab_sea results)
7252      * CTRL_OPTIONS.h needs new flag: CTRL_SET_OLD_MAXCVARS_40
7253    o pkg/seaice:
7254      * added computation of saltFlux in seaice_growth;
7255        For time being, sea ice salinity is assumed constant
7256        contribution of snow flooding to freshening of sea ice is neglected.
7257        SEAICE_salinity is set in SEAICE_PARM01 of data.seaice and it
7258        defaults to 0.0 in order to maintain backward compatibility.
7259        Typical values for SEAICE_salinity are 4 to 10 g/kg.
7260      * replaced dRf(1) with dRf(kSurface)*hFacC(kSurface) in seaice_growth.F
7261      * added SEAICE_availHeatFrac, which specifies fraction of surface level
7262        heat content used to melt or grow ice
7263      * commented out cap of HICE: it helps keep ice thinner
7264      * reintroduced cap of HEFF via MAX_HEFF and SEAICE_CAP_HEFF option
7265      * applied OBCS T/S mask to HEFFM sea ice mask
7266    
7267    checkpoint59d (2007/06/21)
7268    o standard name: {PKG}_DIAGNOSTICS_STATE to fill diagnostics array
7269     for {PKG} state variables, and called from DO_STATEVARS_DIAGS.
7270     (keep {PKG}_DIAGNOSTICS_FILL for non-state variables diagnostics)
7271    o pkg/gmredi (gmredi_readparms.F): add some missing "_d 0"
7272     and change default value of parameter "GM_Small_Number";
7273     update output of exp: lab_sea (x2), cfc_example, global_ocean.90x40x15,
7274       global_ocean.cs32x15 (x4), global_ocean_ebm, global_with_exf,  
7275       tutorial_global_oce_biogeo, tutorial_global_oce_latlon
7276    o pkg/ecco: cost function when applying pkg/smooth to controls
7277    o pkg/ctrl: add forcingPrecond run time parameter
7278    o pkg/seaice:
7279     - replace ZMIN=4.e8 with ZMIN=0. in dynsolver.F as in C-grid code
7280     - fix bug in metric terms of u-equation in LSR solver (implicit part),
7281       changes verification/lab_sea
7282     - rearrange implicit part of u-equation in LSR solver to make it easier to
7283       read, understand, and debug. This causes changes at the truncation level.
7284     - fix (serious) bug in the boundary conditions (sign error in the implicit
7285       part) of the LSR solver. Changes all LSR results.
7286     - fixed problem with HSNOW initialization to avoid thick snow when AREA
7287       is initilized with small values - does not change lab_sea results.
7288     - added HsnowFile initialization capability
7289    o pkg/smooth: addition to model/src and pkg/ctrl so allow
7290     initialization of pkg/smooth and application to control vector
7291    o pkg/seaice: fix another bug in the LSR no-slip boundary conditons
7292    o dependencies: pkg/profiles requires pkg/cal
7293    o pkg/profiles:
7294     - added option ALLOW_PROFILES_GENERICGRID
7295         -> pkg/profiles can thus be used with any grid (e.g. cs32x15) assuming
7296         that interpolation information (grid points and coefficients) is provided
7297         within the netcdf input files.
7298         -> sample matlab scripts can be found in MITgcm_contrib/gael
7299         that allow you to prepare netcdf input files.
7300     - also modified: cleaner include statements, cleaner error print statements,
7301       cleaner stops when error, and more tests of the netcdf input files consistency.
7302    o additional test (in global_ocean.cs32x15) using seaice+thsice pkgs.
7303    o pkg/seaice:
7304     - move seaice-diagnostics from seaice_do_diags to do_statevars_diags; this
7305       requires a new routine: seaice_diagnostics_fill.F
7306     - make sure that seaice does not move if not forced (pressure replacement
7307       method, Hibler and Ip, 1995), changes results
7308     - and new damping criterion for EVP solver according to Hunke, JCP, 2001
7309     - SEAICE_evpDampC = > 0. turns it on (615. is the recommended value).
7310       It is turned off by default (=-1.), because it changes the results.
7311     - make it possible to read AREA from a file, too.
7312    
7313    checkpoint59c (2007/06/04)
7314    o add S/R and diagnostics for oceanic mixed-layer depth
7315    o move GMRedi call after all vertical mixing schemes (including KPP)
7316    o pkg/thsice:
7317     - ensure iceMask > iceMaskMin : this problem appeared after May-04 modifs
7318      (melt only laterally if thin ice): update output of global_ocean.cs32x15.thsice
7319    o pkg/obcs:
7320     - bug fix for balance code
7321    o pkg/seaice:
7322      - allow values of SEAICE_elasticParm > 1
7323      - add new parameter SEAICE_evpTauRelax as an alternative
7324        to SEAICE_elasticParm
7325      - make lsr boundary conditions free slip (by default), changes result
7326      - add code for no slip boundary conditions for lsr
7327      - set minimum of zeta to zero (and not 4e8) (changes results)
7328      - add a cap on AREA after advecting AREA if seaice_growth is not called
7329    o change calculation of Visbeck K:
7330      - no longer depend on tapering scheme; instead, compute slope (limited
7331        by GM_maxSlope). this is equivalent to what was comuted before with
7332        clipping or linear tappering.
7333      - fix vertical averaging (wrong by 1/2 level)
7334      - leave the old version (but will not be maintained) within
7335        #ifdef OLD_VISBECK_CALC / #endif
7336      - update output of exp. ideal_2D_oce
7337    o change error catch in calc_r_star to improve vectorization
7338    o exf runoff and seaice: remove ALLOW_SEAICE from exf pkg files and
7339      add #define ALLOW_RUNOFF in SEAICE_OPTIONS.h (when not using exf).
7340    o adjoint:
7341      Re-organized adjoint checkpointing according to Matt Mazloff
7342      (but with modifs/completions/cleanups)
7343      Storing is now bundled into large arrays to optimized I/O
7344      (and second step in cleanup of the_main_loop)
7345    
7346    checkpoint59b (2007/05/16)
7347    o coupler (pkg/atm_ocn_coupler, pkg/ocn_compon_interf, pkg/atm2d):
7348      - export/import (between ocean & coupler) fields needed for ocean DIC.
7349    o pkg/seaice:
7350      - get rid of three more exchanges seaice_calc_viscosities (required
7351        different loop boundaries in seaice_lsr and seaice_ocean_stress)
7352      - bug fix in seaice_ocean_stress (update of lab_sea required)
7353      - reduce loop boundaries to necessary minimum also in seaice_evp
7354      - go back to the old way of computing deltaC/Z as the adjoint likes that
7355        better
7356    o Refresh of tutorial_global_oce_latlon (includes changing salinity-like
7357      passive tracer to an Age Tracer) + update output.txt
7358    o pkg/exf:
7359      - implement A-grid / C-grid selection for wind-stress input files.
7360      - clean-up exf_wind.F (remove us, use wspeed instead ; add wStress)
7361      for now, in exf_bulk_largeyeager04.F only :
7362      - change implementation for case where windspeed + 2. components wind-stress
7363        are read-in. AND use rhoConstFresh to convert evap.
7364    o pkg/seaice:
7365      - use correct EXCH_UV for wind-forcing (on A-grid).
7366      - change SEAICE_OPTIONS.h to limit the number of option combinations (regarding
7367        SEAICE_EXTERNAL_FORCING & SEAICE_EXTERNAL_FLUXES); add corresponding stops.
7368    o pkg/exf:
7369      - default EXF options are now set in EXF_OPTIONS.h (ifndef ALLOW_AUTODIFF_TAMC)
7370      EXF_INTERPOLATION:
7371      - merge global_with_exf/code version of exf_interp_read.F
7372        to the main code ;
7373      - Add new option: EXF_INTERP_USE_DYNALLOC to use Dynamical Allocation when
7374        reading the file ; Important: This options needs to be defined to recover
7375        previous code.
7376        otherwise, use fixed size array to read in (size=exf_interp_bufferSize).
7377      - no longer loose real*8 precision along the way when using exf_iprec=64.
7378    o pkg/seaice: rearrangement of common blocks (really needs more cleaning up)
7379      - change discretisation of evp-solver in order to avoid another exchange
7380        (changes lab_sea) and clean up a little
7381      - replace SQRT(MAX(deltaC,SEAICE_EPS)) by MAX(SQRT(deltaC),SEAICE_EPS)
7382        help the adjoint (this also changes the results slightly)
7383      - add a few "_d 0" where they had been missing in seaice_evp.F
7384      - cleaning up: remove unused seaice_calc_rhs.F
7385    o pkg/exf: some cleaning-up:
7386      - change various "constants" into runtime parameters
7387      - cleaned-up Large&Yeager04 routine which should eventually
7388        replace exf_bulkformulae.F (changed names of S/R and CPP)
7389        and merged various ALLOW_ATM_WIND options
7390     only used with thsice pkg (in thsice_get_exf.F):
7391      - implement fixed turbulent transfert Coeff over ice (as in Large&Yeager04)
7392        which are used when useStabilityFct_overIce=TRUE (= the default)
7393      - change default values of ice & snow emissivity and scale downward LW
7394        by ice & snow emissivity.
7395    o pkg/thsice:
7396     fix few little problems, in thsice_calc_thickn.F:
7397      - growth vertically (and not laterally) if iceFrac == iceMaskMax
7398      - melt only laterally if hIce < hThinIce (as the comments say)
7399      and in thsice_extend.F:
7400      - allow to form ice even when iceFrac == iceMaskMax (by increasing thickness)
7401      - start to form ice as soon as the minimum ice-volume is reachable.
7402     update output of test-exp: aim.5l_cs(thSI), global_ocean.cs32x15(thsice),
7403      and cpl_aim+ocn
7404    o pkg/kpp
7405     - move computation of surface related input fields to KPP into a new
7406       subroutine kpp_forcing_surf.F
7407     - remove wrong (within bi,bj loops) EXCH calls.
7408     - little cleaning (add argument myThid in last position, cvs header ...)
7409     - for now, fix conservation problem by exchanging KPPviscAz (may not
7410       be the best fix)
7411    o pkg/seaice
7412     - check for inconsistent evp parameter/cpp-flag combination
7413     - remove leftover errIO flat for obsolete name list error handling
7414    o OpenAD
7415     - changed verification/OpenAD to full baroclinic setup (including GM/Redi)
7416    
7417    checkpoint59a (2007/05/01)
7418    o pkg/seaice: some parameter clarifications and a little bit of clean up
7419    o pkg/thsice: rename run-time parameters:
7420       himin       -> hIceMin
7421       himin0      -> hThinIce
7422       hihig       -> hThickIce
7423       i0          -> i0swFrac
7424       transCoef   -> bMeltCoef
7425       frac_energy -> fracMelting
7426      add new parameters: hNewIceMax, fracFreezing, dhSnowLin
7427       with default values (for now) that do not change the results.
7428      remove old version of thsice vars advection in pkg/seaice.
7429    o in FFIELDS.h:
7430      - replace #ifndef ALLOW_EXF  by #ifndef EXCLUDE_FFIELDS_LOAD
7431      - make pLoad & sIceLoad always available (but still only used if
7432         ATMOSPHERIC_LOADING is #define).
7433    o pkg/kpp: replaced _KPP_RL with _RL
7434    o bug fixes for vertical diffusivity computations when both KPP and
7435        3D diffusivity arrays are used; pkg/kpp/kpp_calc_diff_s & _t.F
7436        are no longer updating the vertical diffusivity array
7437        (passed as argument) but are (re-) setting those arrays.
7438    o pkg/seaice: fix bug in evp solver, while doing that
7439      - change (improve?) discretization of stress computations for both
7440        cgrid-lsr and evp solver
7441      - add a new routine to compute strain rates
7442      - the above changes lab_sea results
7443      - add no slip conditions for evp solver (off by default), lsr-version
7444        may follow
7445      - fix exchange for shear at Z-points (does not change lab_sea)
7446      - retire SEAICEuseEVP, instead turn on EVP by setting SEAICE_deltaTevp
7447        (to force the user to pick a time step since there is not "safe" way
7448        of choosing it)
7449      - add principal stress diagnostics
7450      - rearrange fields for evp a little to avoid having to call a: too many
7451        exchanges and b: exchanges for stress trensor components which we do
7452        not have.
7453      - modify Hibler+Bryan (1987) stress coupling so that it reuses information
7454        of evp, complete rewrite for lsr case (latter is does not yet work
7455        in all cases)
7456    o pkg/kpp: add code to have mixing in shelf ice caverns
7457      - add myThid to all kpp routines (long overdue)
7458    
7459    checkpoint59 (2007/04/19)
7460    o pkg/exf:
7461      - fix wind-stress location: defined on A-grid (if ALLOW_ATM_WIND &
7462        ALLOW_BULKFORMULAE or USE_EXF_INTERPOLATION), otherwise, defined on C-grid
7463      - move exf header files from lower_case.h to UPPER_CASE.h ;
7464        add missing cvs Header & Name
7465      - add adjoint routines and flow dirs for newly used exch_uv_agrid routines
7466      - add namelist param. selectStressGridPosition, exf_monFreq
7467      - retire many _CLIM routines, and remove data.exf_clim
7468        + params moved to data.exf
7469        + climsst, climsss now handled by exf_set_gen, i.e.
7470          climss?period=0 refers to constant field,
7471          climss?period=-12 to monthly forcing
7472      - split up namelists in data.exf
7473    o pkg/seaice:
7474      - remove seaice_exch and seaice_exch_uv
7475      - remove superfluous exchange of theta
7476      - add myThid to seaice_budget_ocean/ice
7477      - add new interface for atmospheric wind forcing (C-grid only)
7478        + new routine
7479        + two new field (taux, tauy for stress over ice)
7480        + removed one global field (DAIRN) for C-grid case only
7481    o pkg/thsise
7482      - 2nd set of modifs for thsice adjoint in conjunction with exf
7483    o enable runtime flag useEXF (useCAL is set to .T. if useEXF=.T.)
7484    
7485    checkpoint58y_post (2007/04/15)
7486    o Added capability for latitudinal dependence of Bryan and Lewis, 1979
7487      vertical diffusivity, similar to that in MOM4; turned on using
7488      #define ALLOW_BL79_LAT_VARY in CPP_OPTIONS.h and specified using
7489      diffKrBL79*, diffKrBLEQ*, and BL79LatVary in runtime data file.
7490    o Added capability for 3D specification of background vertical diffusion
7491      coefficient.  This is done by (i) #define ALLOW_3D_DIFFKR
7492      in CPP_OPTIONS.h and (ii) specifying file diffKrFile in runtime
7493      "data" file that contains the 3D vertical diffusivity coefficients.
7494    o ice dynamics (pkg/seaice) with thsice thermodynamics:
7495      - add code within pkg thsice to advect & diffuse sea-ice fields
7496      similar to (and will replace) what has been added in  seaice_advdiff.F,
7497      but: - conserving Mass, Heat & Salt.
7498           - better when using non-linear advection scheme (not yet fully tested)
7499           - can also be used in atmospheric set-up (for now, only the diffusion).
7500    
7501    checkpoint58x_post (2007/04/04)
7502    o IO option for global-file compact format:
7503      - add options when generating topology (utils/exch2/matlab-topology-generator)
7504      - add I/O capability (pkg/mdsio).
7505      - adapt utils/matlab/rdmds.m to read this format.
7506      for now long-line format not yet supported by pkg/mdsio (& exch2).
7507    o shelfice: add a few diagnostics
7508    
7509    checkpoint58w_post (2007/03/13)
7510    o p-coord. non-hydrostatic using reference profile for w <-> omega conversion:
7511      rVel2wUnit & wUnit2rVel are computed from reference profile Tref,Sref
7512      (and replace horiVertRatio in NH code).
7513      Update output of exp.: tutorial_global_oce_in_p (useNHMTerms !)
7514                         and tutorial_plume_on_slope (sensitive to truncation)
7515    o seaice: if ALLOW_ATM_WIND is undefined use wind stress
7516      directly to drive seaice model (C-grid only)
7517    o exf: when input wind-stress (#undef ALLOW_ATM_WIND):
7518     - reintroduce computation of wind from stress,
7519     - compute tau (in exf_bulkformulae.F) from windstress averaged to
7520       mass points to avoid tau = 0
7521     - fix serious bug: (1/3) in Fortran is not the same as (1./3.)
7522    o rdmnc.m: make it work with "global" files created with gluemnc
7523    o rdmnc.m : some improvements in dealing with singleton dimension
7524      (tested on all testreport mnc output files).
7525    o genmake2: disable pkg/profiles if netcdf test fails.
7526    o cpl_aim+ocn exp.: use consistent rhoConstFresh in Atm & Ocn; update output.
7527    o move call to cal_readparms up to make calendar parameters/variable available
7528      to all packages
7529    
7530    checkpoint58v_post (2007/02/08)
7531    o change EOS (from POLY3 to JMD95P) in global_ocean.90x45x15 to get
7532      useDynP_inEos_Zc tested.
7533    o pkg/exf: changes to properly interpolate/mask/scale initial fields
7534    o utils/matlab/cs_grid/read_cs: routines to speed up reading of CS510 fields
7535      and portions thereof.  See read_cs.txt for description and examples.
7536    o utils/matlab/cs_grid/bk_line: to compute transport through passages,
7537      add a script (grt_circ_bkl.m) to generate broken-line between 2 points,
7538      following the great-circle arc between those 2 points.
7539    o trap un-initialized variable with pathscale compiler on weddell.mit.edu
7540      (thanks to Constantinos): fix few problems and get (almost) all exp to pass.
7541    o 2nd-Order Moment Advection Scheme (Prather, 1986): first check-in
7542     - enable by setting #define GAD_ALLOW_SOM_ADVECT (in GAD_OPTIONS.h)
7543     - used without limiter (AdvScheme=80) or with Prather limiter (AdvScheme=81)
7544     - still needs work (not working with some options ; efficiency to improve)
7545       and serious testing.
7546     - use this scheme for temperature & salinity in 2 advection test exp.:
7547       advect_xy & advect_xz, respectively.
7548    
7549    checkpoint58u_post (2007/01/12)
7550    o new test-exp: fizhi-cs-32x32x40 (40 levels) to replace the 10 levels.
7551    o move call to INI_FORCING from PACKAGES_INIT_VARIABLES to INITIALISE_VARIA.
7552    o testreport: add option "-skipdir" to skip some test.
7553    o exf: when input wind-stress (#undef ALLOW_ATM_WIND), by-pass turbulent
7554      momentum calculation.
7555    o gad_advection: fix vertAdvecScheme (if different from advectionScheme)
7556    o some cleaning: usePickupBeforeC35 no longer supported ; remove this option.
7557      remove checkpoint.F and the_correction_step.F (no longer used);
7558      do the k loop inside CYCLE_TRACER (supposed to be more efficient).
7559    o add option (linFSConserveTr) to correct for tracer source/sink due to
7560      Linear Free surface
7561    o pkg/seaice: fix a bug in the flooding algorithm: turn off the snow machine
7562    o pkg/thsice: fix reading mnc-pickups
7563    
7564    checkpoint58t_post (2006/12/30)
7565    o pkg/diagnostics: fix multi-threaded output (when singleCpuIO=F)
7566    o pkg/mdsio:
7567     - clean-up mdsio_readfield.F & mdsio_writefield_new.F and
7568       move to new files: mdsio_read_field.F (S/R MDS_READ_FIELD) &
7569       mdsio_write_field.F (S/R MDS_WRITE_FIELD);
7570     - fix multi-threaded singleCpuIO option in MDS_WRITE_FIELD
7571     - collect old S/R  in one file: mdsio_rw_field.F (now just a call to
7572       either MDS_READ_FIELD or MDS_WRITE_FIELD )
7573     - new S/R (to replace MDSWRITEMETA), which allows to write more
7574       informations (variable names, time ...) to meta files.
7575     - modify rdmds.m to give back the meta file content.
7576    o pkg/diagnostics: change vertical interpolation to be safer, and more
7577       flexible (define p-levels to interpolate to in data.diagnostics);
7578      add argument to S/R DIAGNOSTICS_GET_POINTERS to catch the right
7579       diagnostic pointer.
7580    o pkg/seaice: more cleaning up of seaice_growth, added many comments
7581    o pkg/exf: put runoff0 and runoff1 into the appropriate common block
7582    o fix multi-category seaice:
7583     - change cpp flag SEAICE_MULTILEVEL to more meaningful name:
7584       SEAICE_MULTICATEGORY
7585     - fix short wave heat flux
7586    o pkg/seaice: change default (SEAICE_OPTIONS.h): use C-grid dynamics
7587       and allow to use EVP solver. Change forward lab_sea: test both EVP
7588       solver and LSR solver, and use C-grid dynamics (like lab_sea adjoint)
7589    o Initial check-in of lab_sea adjoint
7590      (very similar to natl_box_adjoint/code_seaice)
7591      * used C-grid and EVP solver
7592      * used KPP, GM/Redi
7593      * uses inAdExact=.TRUE.
7594      * gradient checks fail for both ADM and TLM
7595        due to sensitive snow melt code in seaice_grwoth (look for "JZ")
7596        f.d. gradients actually seem more problematic than ADM, TLM gradients;
7597        issue is related to forward mismatch between g77 an ifort
7598    o pkg/seaice: overhaul of thermodynamics
7599     - growth.F and groatb.F are replaced by new routine seaice_growth.F
7600     - budget.F is replaced by two new routines seaice_budget_ocean/ice.F
7601     - move a few global fields out of SEAICE.h into seaice_growth.F and
7602       make them 2D (FICE/QNETO/ ...)
7603     - remove FO (it is the same as QNETO)
7604     - introduce a few local fields to avoid modifying external fields such
7605       as atemp, etc.
7606    
7607    checkpoint58s_post (2006/12/11)
7608    o pkg/exf: moved exf_init_runoff.F to exf_init.F and exf_set_gen.F
7609      changed exf_set_gen.F so that
7610        genperiod=0 means input file is one time-constant field and
7611        genperiod=-12 means input file contains 12 monthly means
7612    o CG2D: use pre-computed solver main-diagonal (stored in common block);
7613      this affects truncation error ; generate new output file for exp. which
7614      fails: exp4(12d), fizhi-cs-aqualev20(12d), front_relax(10d),
7615        global_ocean.90x40x15(10d), global_ocean.cs32x15(10d).thsice(11d).viscA4(10d),
7616        ideal_2D_oce(10d), internal_wave(09d), isomip.htd(11d), matrix_example(07d),
7617        MLAdjust(4x11d,12d), natl_box(11d), rotating_tank(12d),
7618        tutorial_global_oce_in_p(10d), tutorial_plume_on_slope(11d),
7619        vermix(12d).ggl90(12d).my82(11d).opps(12d).pp81(11d)
7620    o start implementation of deep-atmosphere and anelastic formulation
7621    o verification: remove 2nd copy of input files and use script "prepare_run"
7622      to make a symbolic link to the 1rst copy (reduce downloaded size by ~81.M)
7623    o mom_common/vecinv/fluxform: fix a few initialisation isssues
7624    o profiles: fix for multithreaded case
7625    
7626    o diagnostics: rename few diags:
7627      s/'PRESSURE'/'RCENTER '/g
7628      s/'TICE    '/'oceFreez'/g
7629      s/'TAUX    '/'oceTAUX '/g
7630      s/'TAUY    '/'oceTAUY '/g
7631      s/'SWFLUX  '/'oceQsw  '/g
7632      s/DIFx/DFxE/g
7633      s/DIFy/DFyE/g
7634      and add few ocean-forcing diagnostics:
7635      atmPload, sIceLoad, oceQnet, oceFWflx, oceSflux, surForcT & surForcS
7636    o modifications to pkg/seaice/growth.F and budget.F, which change results of
7637      lab_sea experiment: HSNOW was sometimes treated as effective and sometimes
7638      as actual snow thickness.  It now refers everywhere to effective snow
7639      thickness, meaning that for non-zero AREA, actual thickness is HEFF/AREA.
7640    
7641    checkpoint58r_post (2006/11/17)
7642    o modifications to pkg/seaice/growth.F, which change results of
7643      lab_sea experiment: fixes pertain to melting snow over open water, to
7644      masking EVAP under sea ice, and to using the correct AREA variable for
7645      computations of EVAP, PRECIP, HSNOW, and GHEFF
7646    o add ability to read bathy, salt, and theta using MNC (off by def)
7647    o add flooding algorithm and advection of HSNOW for pkg/seaice;
7648      both are turned off by default and do no change any results
7649    o seaice advection with pkg/thsice: a step toward the use of non-linear
7650      advection scheme, but #ifdef or commented out for now (requires more EXCH).
7651    o use standard version of PTRACERS_INI_VARIA in tutorial_tracer_adjsens
7652      (identical results) and the standard version of EXTERNAL_FIELDS_LOAD
7653      in natl_box (affects results @ truncation level: update output.txt)
7654    o multi-threading and IO:
7655      - replace some call to MDSIO S/R by the corresponding READ/WRITE_FLD S/R.
7656      - remove most of BEGIN_MASTER/ END_MASTER around READ/WRITE_FLD S/R calls
7657        (needed to work with SingleCpuIO): tested in all verif. exp.
7658    o GAD: use simpler DST3 formulation as default (old version left within #ifdef)
7659      affects the results (but none of the verification test uses this scheme).
7660    o Adding some pkg/diagnostics capability to pkg/seaice
7661      (will certainly be subject to changes)
7662    o ctrl: adding new control variables:
7663      lwflux, lwdown, evap, snowprecip, apressure, runoff
7664    
7665    checkpoint58q_post (2006/10/20)
7666    o added CPP_EEOPTIONS.h flag DISABLE_MPI_READY_TO_RECEIVE.  Speeds up
7667      1/6-deg Southern Ocean configuration by 8% on IBM Datastar and
7668      high_res_cube configuration by 4% on Columbia.
7669    o clean-up multi-threaded problems (reported by debugger tcheck on ACES);
7670      add (in global_with_exf/code) a version of EXF_INTERP_READ without
7671      dynamical allocation (seems to work in multi-threaded).
7672    o new function "MASTER_CPU_IO" (=T if master thread & master CPU, if using
7673      single CPU io) so that TAF does not have to see EESUPPORT.h
7674    o pkg/seaice: implement sea-ice loading (when using RealFreshWaterFlux)
7675    
7676    checkpoint58p_post (2006/09/08)
7677    o obcs: stop if obcs is used with useCDscheme = .true.
7678    o shelfice:
7679     - fix a sign error so that no slip at shelfice interface works
7680     - remove stop for combination non-hydrostatic code and shelfice. That does
7681       not mean, that the results are correct, but at least they are numerically
7682       stable
7683    o diagnoctics: modify UVELPHI and VVELPHI to include hfac (i.e. mass-weighted)
7684    o added adjoint exch routined for all exch*3d* routines
7685      and updated flow directives
7686    
7687    checkpoint58o_post (2006/08/28)
7688    o replace calls to EXCH_Z & EXCH_UV_AGRID: use the new _3D_ version ;
7689      remove old subroutines (_XY_ & _XYZ_); update the adjoint version.
7690    o change controling S/R for writing pickup file (new S/R do_write_pickup)
7691      and clean-up reading/writing of pickup files.
7692    o fix local version of read/write pickup (NH part) in rotating_tank/code
7693    o simplify EXCH interface:
7694     - change _XYZ_ interface to _3D_ subroutine (with 3rd dim in argument list)
7695     - not often used EXCH S/R (exch_z, exch_uv_agrid): keep only the _3D_ version
7696    o added the regrid package
7697    o shelfice:
7698     - add a simple boundary layer scheme to reduce noise
7699     - fix the indexing in shelfice_u/v_drag so that there will be actually drag
7700    
7701    checkpoint58n_post (2006/08/14)
7702    o fix globalArea multi-threaded calculation: need to apply GLOBAL_SUM to
7703       local variable (not in common block).
7704    o lot of small changes for multi-threaded. Most tests (using OMP & ifort) pass.
7705      - still problems with pkgs: mnc, exp2, dic, cal, exf (and probably more);
7706      - still BEGIN_MASTER/END_MASTER to remove around READ/WRITE_FLD S/R calls
7707        to work with SingleCpuIO.
7708    o add "_d 0" to real constant of pkg/cfc subroutines ;
7709       update exp. cfc_exemple & tutorial_cfc_offline output files.
7710    o multi-threading and IO:
7711      - all threads call READ_FLD S/R (needed if using SingleCpuIO):
7712        (no BEGIN_MASTER/ END_MASTER around the call, but inside MDSIO S/R.
7713      - barrier before and after reading.
7714      - stop if other than master is calling MDS_WRITELOCAL (if #undef IO_THREAD_SAFE)
7715      - avoid using MDS_WRITELOCAL for LAND pkg output.
7716      - new S/R AIM_WRITE_PHYS (replaces AIM_WRITE_LOCAL) to write AIM physics
7717        common-block variables ; Allows multi-threading with master-thread IO.
7718    o change default MAX_NO_THREADS from 32 to 4 ;
7719      and stop cleanly when MAX_NO_THREADS is too small.
7720    o add S/R BAR_CHECK to check multi-threaded barrier synchronization
7721    
7722    checkpoint58m_post (2006/07/17)
7723    o add a Non-Hydroatatic test (with 3-D Coriolis, NHMTerms, biharmonic Visc.
7724       and side-drag) on CS-grid : global_ocean.cs32x15.viscA4
7725    o make "tutorial_global_oce_latlon" from standard "global_ocean.90x40x15" exp.
7726       keep global_ocean.90x40x15 (for AD testing) with former secondary test
7727       (".qshyd") as the main test (mv output.qshyd.txt to output.txt)
7728    o CVS modules: update MITgcm_verif_basic; remove MITgcm_verif_ocean & _verif_atmos;
7729        add MITgcm_tutorials (= code + all the tutorials)
7730    o ecco, option to compute cost for total ssh (mean+anom)
7731    o consistent with addition of ptracer and ssh in pkg/profiles
7732    o profiles: adding ptracer and ssh
7733    o testreport: change multi-test output-file name
7734      (from output.txt.{name} to output.{name}.txt)
7735    o profiles: now ok for mutli-tiles case
7736    o seaice: add 4 parameters for different advection schemes for area,
7737      (effective) seaice thickness, enthalphy, and snow height. Their default
7738      is the standard parameter SEAICEadvScheme
7739    o calc_gw:
7740     - add cosFacU in zonal viscous flux (harmonic.visc.).
7741     - put back side-drag (call new S/R MOM_W_SIDEDRAG) and output.txt.
7742       of tutorial_plume_on_slope.
7743    o obcs_calc.F : fix index Pb in OBSeta & OBNeta (Thanks to Gianmaria).
7744    o calc_gw: true flux-form, account for horizontal grid spacing.
7745      update rotating_tank results, but not plume_on_slope (affected at
7746      truncation level, 11 digits).
7747    
7748    checkpoint58l_post (2006/07/12)
7749    o calc_gw:
7750     - take bi,bj loops outside calc_gw to fix Pb with local array KappaRU,V
7751     - remove side-drag for now (need to fix it); update plume_on_slope results.
7752     - fix for partial-cell & non-uniform dz; update plume_on_slope results.
7753    o commit code to make SST/SSS weights spatially variable
7754      (based on either variable in-situ or variable initial T/S weights)
7755    o pkg/ecco:
7756      * commit code to relax deviations of xx_theta, xx_salt to 5*sigma,
7757        now based on horizontally varying weights wthetaLev, wsaltLev
7758      * cost_averagesflags now returns year indices in addition to day, month
7759      * sflux balance is performed on annual basis
7760        (sflxumm, sfluxmm2, bal_sfluxmm)
7761      * for SSH anomaly, separate more cleanly contrib from T/P, ERS, GFO,
7762        including separate counting and multipliers
7763    o pkg/rbcs
7764      * add all necessary infrastructure for pkg/rbcs levN adjoint checkpointing
7765    
7766    checkpoint58k_post (2006/07/06)
7767    o testreport:
7768     - always build in dir. "build" (if not there, mkdir build instead of building
7769       & running in input)
7770     - run in dir run (if it exists), in build otherwise.
7771     - call prepare_run (if input/prepare_run exists)
7772     - run multi-threaded test (with new option: "-mth") if file input/eedata.mth exists.
7773    o pkg/exf modifications to interpolation and rotation routines for more
7774       reasonable treatment of North Pole singularity: for tracers North Pole
7775       value is set to northernmost zonal-mean value, for zonal velocity it is
7776       set to zero, and for meridional velocity it is set to northernmost value.
7777    o pkg/exf/exf_check_range.F
7778     - add tile index to diagnostics and move stop statement to the very
7779       end of the routine.
7780    o pkg/diagnostics: (diagnostics_main_init.F)
7781      define title of isomorphic variables according to the current config.
7782    o pkg/thsice with pkg/seaice dynamics:
7783    - fix domain of computation (interior only, required for exf) and do exchanges
7784    - seaice-dynamics forcing: add atmospheric and seaice loading to SSH gradient
7785    o towards a standard way of dealing with multi-threading in MONITOR
7786      and ${PKG}_MONITOR (all except ptracers_monitor) subroutines.
7787    o Pass variable viscosities (vertical and horizontal, e.g., KPP or Leith)
7788       to W momentum equation in nonhydrostatic and quasihydrostatic runs.  
7789    o make exf_monitor & seaice_monitor independant of the main (dynamics) monitor.
7790    o pkg/seaice: fix SEAICEuseEVPpickup parameter (put it in a commom block)
7791    o generic_advdiff: DST advection S/R : use local copy of velocity to compute CFL
7792       (problems ? with gradient check in bottom_ctrl_5x5 adjoint test)
7793    o tracer advection:
7794     - clean-up and simplify calc_common_factors.F
7795     - make a local copy of velocity and pass it (as u,v,r_Trans) to DST tracer
7796       advection subroutine (but still not used within DST advection S/R)
7797    o rename pkg aim_ocn_coupler to atm_ocn_coupler (later on, will be used without aim)
7798    
7799    checkpoint58j_post (2006/06/15)
7800    o new driver S/R: LOAD_FIELDS_DRIVER to load external forcing fields
7801      from file (collects calls previously in FORWARD_STEP)
7802    o move call to SEAICE_MODEL from FORWARD_STEP to DO_OCEANIC_PHYS
7803    o adjoint store dir. adjusted accordingly
7804    o genmake2
7805      replace target "ad_taf" by $(EXE_AD) ; add $(EXE_AD) to the make CLEAN list.
7806    
7807    checkpoint58i_post (2006/06/14)
7808    o pkg/seaice: add parameter that allows to scale/turn off effect of seaice
7809      on wind stress (SEAICEstressFactor defaults to 1.)
7810    o Total number of Timers is finite (<=40): comment out 2 non-essential one
7811      in the_main_loop.F to avoid Pb (e.g., when running fizhi test)
7812    o vector_invariant: fix highOrderVorticity(=4.th.Order) advection
7813      on CS-grid: no longer loosing mass.
7814    o exf & curvilinear-grid: no longer modify longitude xC & xG.
7815    o pkg/ggl90: fix sloppy output and fix a bug
7816    o pkg/seaice: added SEAICEuseEVPpickup parameter
7817      - Set to false in order to start EVP solver with
7818        non-EVP pickup files when using SEAICEuseEVP
7819      - fix sign error in diffusion in seaice_calc_rhs
7820    
7821    checkpoint58h_post (2006/06/07)
7822    * Modifications for bottom topography control
7823      o replace hFacC by _hFacC at various places
7824      o replace ALLOW_HFACC_CONTROL by ALLOW_DEPTH_CONTROL
7825      o add non-self-adjoint cg2d_nsa
7826      o update autodiff support routines
7827      o re-initialise hfac after ctrl_depth_ini
7828      o works for 5x5 box, doesnt work for global_ocean.90x40x15
7829    * Adding verification for 5x5 box (4-layer) bottom topography control
7830    
7831    checkpoint58g_post (2006/06/07)
7832    o pkg/diagnostics: implement "periodic averaging diagnostics" (e.g.,
7833       used for mean seasonal cycle, mean diurnal cycle); add an example
7834       in verification/global_ocean.cs32x15/input.thsice/data.diagnostics
7835    o pkg/ggl90:
7836      - add parameter (minimum surface kinetic energy)
7837      - fix bug (avoiding division by zero)
7838    o couple pkg/thsice to pkg/seaice:
7839      - modify advection in seaice to accomodate new scalar fields to be advected
7840      - only muliDimAdection scheme work with seaice/thsice
7841      - mapping of thsice-variables to seaice-variables, back and forth
7842      - does not break the verification experiments, but does not give the
7843        desired results either
7844    o pkg/seaice
7845      - make (default) second order advection a bit less confusing?
7846    
7847    checkpoint58f_post (2006/06/05)
7848    o couple pkg/thsice and pkg/exf (as a preparation for coupling pkg/thsice
7849      to pkg/seaice):
7850      - new routines thsice_map_exf and thsice_get_exf provide the interface
7851      - add an additional formal parameter to thsice_solve4temp
7852    o pkg/exf:
7853      - add new fields wspeed, snowprecip (to be able to couple to thsice)
7854      - correct Stefan-Boltzmann constant
7855      - new parameter for longwave surface emittance
7856      - separate some stuff from exf_bulkformulae into new routines  
7857        exf_radiation, exf_wind
7858      - add new parameters and constants: longwave emissivity for ocean, ice
7859        and snow, evaporation parameters over ice
7860      - decouple wind/stress computation from ALLOW_BULKFORMULA: always compute
7861        either wind from stress or stress from wind
7862    o pkg/thSIce:
7863    - split thsice_step_fwd.F in 2 S/R: thsice_step_temp.F & thsice_step_fwd.F
7864    - put i,j loops inside S/R: THSICE_ALBEDO, THSICE_SOLVE4TEMP, THSICE_EXTEND
7865       and THSICE_CALC_THICKN
7866    - for now, call to THSICE_GET_BULKF remains inside i,j loops.
7867    - add CPP option: ALLOW_DBUG_THSICE and header file THSICE_DEBUG.h
7868      to make debugging easier.
7869    - affects results (@ truncation level) of global_ocean.cs32x15.thsice: update output
7870    o pkg/bulk_force:
7871      - clean-up comments and parameters ;
7872      - add new Bulk-Formulae from Large and Yeager, 2004, NCAR/TN-460+STR ;
7873    o fix bug in aim+thsice albedo: snow & ice thickness arguments were switched;
7874      generate new output for test-experiment: aim.5l_cs.thSI
7875    o results_ad : rename "output.txt_adm" to "output_adm.txt" and change
7876      testreport accordingly
7877    
7878    checkpoint58e_post (2006/05/17)
7879    o SEAICE_CGRID adjoint done
7880    o R_STAR adjoint implemented.
7881      * Seems to just work (based on global_ocean.90x40x15/code_ad_nlfs/ )
7882      * need to sort out init. of h0facc, etc.
7883    o Make pkg/profile fully independent of ecco,cost, etc. stuff
7884      to be able to use it in pure forward.
7885    
7886    checkpoint58d_post (2006/04/21)
7887    o upgrade simple test-experiment to tutorial example:
7888     step.1: duplicate the experiment and (step.2) will remove the old copy.
7889      tutorial_barotropic_gyre      <- copy of exp0     (R1:barotropic_gyre_in_a_box)
7890      tutorial_baroclinic_gyre      <- copy of exp1     (R1:baroclinic_gyre_on_a_sphere)
7891      tutorial_global_oce_latlon    <- empty for now    (R1:global_ocean_circulation)
7892      tutorial_global_oce_biogeo    <- copy of dic_example
7893      tutorial_deep_convection      <- almost like exp5 (R1:nonhydrostatic_deep_convection)
7894      tutorial_plume_on_slope       <- copy of plume_on_slope
7895      tutorial_tracer_adjsens       <- copy of carbon   (R1:tracer_adjoint_sensitivity)
7896      tutorial_global_oce_optim     <- empty for now (David ?)
7897      tutorial_global_oce_in_p      <- copy of global_ocean_pressure
7898     some tutorials (R1) were already checked-in under tutorial_examples in release1_branch
7899    o correct a sign problem in cost_scat.F
7900    o obcs and ptracers: fix boundary conditions for advections schemes
7901      with larger stencil
7902    o thsice adjoint: start
7903    o mom_vecinv: add ISOTROPIC_COS_SCALING flags to mom_vi_hdissip for
7904      completeness
7905    o mom_fluxform: fixing the mutual use of ISOTROPIC_COS_SCALING
7906      and COSINEMETH_III, add comments in default CPP_OPTIONS.h
7907    o ptracers adjoint:
7908      * avoid extensive recomputatations
7909      * fix missing re-init. of gptr (missed by TAF)
7910    o obcs: add a flag (OBCSprintDiags, defaults is true) that allows
7911      me to turn off the excessive output to STDOUT that this package produces
7912    o move NH metric terms & 3.D Coriolis S/R to pkg/mom_common
7913      and add those terms in Vector-Invariant formulation.
7914    o in ctrl pkg, if ALLOW_CAL, use monthly mean controls
7915      if the control period (xx_hfluxperiod etc) is 0
7916    o in profiles pkg, clean routines and fix details
7917    o in ecco pkg, reading ssh data:
7918      fix problem in case the model does not start at iter0=0
7919    o fix mnc-pickup/restart for ptracers
7920    o new package prifiles:
7921      code to compute profile-based cost by Gael Forget
7922      (modifs in ecco, ctrl, autodiff)
7923    o Benign bug fix in initialization (spotted by M. Mazloff) of
7924      ctrl_set_globfld_xz.F ctrl_set_globfld_yz.F
7925    
7926    checkpoint58c_post (2006/03/23)
7927    o adjoint: finish NLFS adjoint and provide reference output in
7928      verification/global_ocean.90x40x15/results_ad_nlfs
7929    o seaice: add an EVP solver following Hunke and Dukowicz (1997) and the
7930      documentation of CICE. Turn on by defining SEAICE_ALLOW_EVP in
7931      SEAICE_OPTIONS.h and SEAICEuseEVP=.true. in data.seaice. Works only
7932      with SEAICE_CGRID defined.
7933    o move calendarDumps from "data" to "data.cal" and clean-up the code
7934      with a simple call to pkg/cal S/R: CAL_TIME2WRITE
7935    o add useEXF & useCAL flags (for now, set in hard-coded way)
7936    o add S/R to compute NH-metrics terms & Coriolis f' in vertical momentum
7937      (were missing in NH mode, and wrong in quasihydrostatic mode).
7938      waiting for Chris updated version of calc_gw to add those CALLs.
7939    o fix bug in quasihydrostatic S/R ;
7940      add a test for this option: global_ocean.90x40x15.qshyd
7941    o new S/R "SET_PARMS": set parameters that might depend on the use of some pkgs.
7942      (called from INITIALISE_FIXED, after INI_PARMS & PACKAGES_READPARAMS)
7943    o add on/off flag useOffLine for package OFFLINE
7944    o seaice:
7945      - modify advection so that it works also on the C-grid
7946      - extend loop ranges in seaice_lsr and seaice_dynsolver; fixes
7947        problem in multi-tile runs with C-grid
7948      - add flags for clipping ice velocities and/or masking solver forcing
7949      - fix drag (ocean on ice) formulation and a bug that caused noise in the
7950        C-grid solver
7951      - added a few comments to seaice_diffusion.F
7952      - separate C-grid and B-grid versions more cleanly (UVM and seaiceMaskU/V
7953        are now exclusive)
7954      - add a new ocean-ice stress coupling method (Hibler and Bryan, 1987) which
7955        required re-ordering the code a little:
7956       + make DAIRN global variable (defined in SEAICE)
7957       + move computation of the viscosities eta and zeta into a new separate
7958         routine (because I need to recompute them in seaice_ocean_stress.F)
7959    
7960    checkpoint58b_post (2006/03/13)
7961    o AIM+thSIce: fix sign of Short-Wave through the Ice ;
7962      update output.txt of exp. aim.5l_cs.thSI
7963    o various mnc cleanups and improvements:
7964      + shrink lookup tables by factor of ~4
7965      + better error reporting when running out of lookup space
7966      + able to handle longer path/file names (up to 500 chars)
7967    o adjoint:
7968      - Another overhaul of store dirs. for NLFS to eliminate  "hidden" recomputations.
7969      - TBD: "hidden" mom_vecinv recomp. in dynamics
7970    o change forcing_In_AB to affects both T,S forcing and Momentum forcing
7971     (allow to differentiate between forcing components using new integer flags:
7972      momForcingOutAB=1/0 & tracForcingOutAB=1/0)
7973     and add new flag to put Dissipation tendency out of Adams-Bashforth.
7974    o ecco
7975      - enable trend removal from SSH anomaly obs.
7976    o adjoint
7977      - a fix for PmEpR when #undef EXACT_CONSERV
7978      - fix of "hidden" recomp. in thermodynamics (no TAF warnings)
7979      - try to fix "hidden" recomp. in forward_step for NLFS
7980        (NLFS seems broken sometimes after I checked it in)
7981    o seaice:
7982     - add c-grid version of the dynamic solver:
7983       + three new routines that are the c-grid substitute lsr, dynsolver
7984         and ostres
7985       + put a few fields that were local to dynsolver into global common
7986         blocks, so that I can move the computation of stresses etc into
7987         seaice_lsr (saves coding but may break the adjoint).
7988     - replace more hardwired parameters by runtime parameters
7989     - add ice masks that mask the rhs of the implicit solvers where there
7990       is no ice (commented out in seaice_dynsolver, because i am not sure
7991       if this works properly), eventually this should replace the clipping
7992       of ice velocities in seaice_dynsolver to +/-40cm/s.
7993    o remove the BUILD_INFO.h include from CPP_EEOPTIONS.h and explicitly
7994      include it only where its needed
7995    o move balancing of fluxes before the call of external_forcing_surf
7996    o seaice:
7997      - correct units of turning angles (now they are really in degrees)
7998      - move computation of GWATX/Y out of main routine into dynsolver
7999      - initialize GWATX/Y in seaice_init
8000    o Apply mask on Fresh-Water flux (needed for SSH forcing).
8001      update output.txt of exp. global_ocean_ebm & cpl_aim+ocn (affects cg2d residual)
8002    o seaice: add runtime flags for turning angles (default to zero)
8003    o Adding runtime parameter to exf/, ctrl/, to remove on-the-fly global mean
8004      and trend from exf forcing and ctrl control adjustments
8005    o fix variable aliasing in gad_calc_rhs that cannot be handled by TAF
8006      (since checkpoint57x_post)
8007    o change the default rotation period to 86164.s = the Earth rotation
8008    o 1rst implementation of Implicit IGW using the 3-D solver (use3Dsolver=T)
8009      and based on a reference stratification. Tested within hs94.cs-32x32x5.
8010    o seaice advection: add code for choosing between the default (2nd order
8011      central differences) and multiDim advection schemes provided by
8012      pkg/generic_advdiff
8013    o seaice:
8014      - removed all references to SEAICE_GRID.h fields from
8015        dynsolver, advect, diffus, lsr, without changing the results of lab_sea
8016        (cubed-sphere configuration will change a little)
8017      - grid computations in seaice_init are obsolete now.
8018      - cleaned up code a little so that is easier to read (hopefully).
8019      - added new (better?) discretizations of default advection and diffusion
8020        (turn on with SEAICEuseFluxForm)
8021      - replace 1 in 3d global fields by kSurface in growth.F
8022      
8023    checkpoint58a_post (2006/02/13)
8024    o seaice:
8025      - bug fix in advect.F
8026    o shelfice:
8027      - separate shelfice load anomaly from pload (breaks with time
8028        dependent forcing), => introduce constant field shelficeLoadAnomaly.
8029        Its default is 0., but it may be computed more cleverly from (unknown)
8030        t- and s-profiles (tRef, sRef) and actual EOS. For now this has to be
8031        done offline. A good approximation of the pressure load anomaly is
8032        necessary to avoid large initial adjustment processes underneath
8033        deep-reaching shelfice.
8034      - small fix in ISOMIP shelfice_thermodynamics
8035      - add more sophisticated thermodynamics of Hellmer (1989), this is
8036        now the default
8037      - give a few constants more intuitive names
8038    o add code to balance EmPmP and Qnet at the end of do_ocean_physics. Useful
8039      if bulk formulae are used in long integration (especially EmPmR). Turn
8040      on with balanceEmPmR = .true. or balanceQnet = .true. in data, PARM01
8041      if balancePrintMean, the imbalance that is substracted is printed to
8042      STDOUT.
8043    o fix bug (typo) in obcs_apply_eta.F
8044    o add a new package shelfice which enables us to model the circulation
8045      underneath shelf-ice with draughts of hundreds of meters.
8046     - works
8047     - to do: + include improved thermodynamics
8048              + check whether kSurfC (from model/inc/SURFACE.h) can be used
8049                instead of new field kTopC
8050              + can we use topoFile, Ro_surf and existing code in ini_depth.F
8051                instead of new field R_shelfIce and new code in ini_depth.F
8052                and ini_mask_etc.F?
8053              + adjust vertical mixing schemes?
8054    o seaice pkg:
8055     - add a cpp-flag to include a simple formula for a salinity dependent
8056       freezing point of sea water at the surface
8057     - change the contents of SEAICE_TEST_ICE_STRESS_1 so that zonal and
8058       meridional stresses are now different (and hopefully correct)
8059    o AIM pkg: change threshold on large-scale condensation to conserve Heat.
8060       update results of aim.5l_LatLon test ; fix title & units of AIM diagnostics
8061       and  change 3 diagnostics names (OSR,OSRCLR,KM -> TSR,TSRCLR,DRAG)
8062    o pkg/diagnostics: add options and parameters for regional-statistics
8063       diagnostics ; define regions by reading a region-mask from a file
8064       (might add other options later)
8065    o pkg/bulk_force:
8066     - add option and parameters to use AIM surface-flux formulae.
8067     - Change loading part: S/R BULKF_FIELDS_LOAD only take care of bulkf_fields ;
8068       others forcing fields (defined in PARM05, parameter file "data") are loaded
8069       from S/R EXTERNAL_FIELDS_LOAD, as usually (with useBulkforce = T or F).
8070     - initialise all bulkf_fields in bulkf_init.F ; do in-lining of exf_bulkcdn.F
8071     - use the right EXCH call for uwind,vwind (to work on CS-grid).
8072     - re-arrange header files (move parameters from BULKF.h to BULKF_PARAMS.h)
8073       and parameters (note: calcWindStress replaces .NOT.readwindstress).
8074     - cleaner interface with pkg/thSIce (new S/R THSICE_GET_PRECIP).
8075    
8076    checkpoint58 (2006/01/12)
8077    o add "--embed-source" option to genmake2 which, when the supporting
8078      tools can be compiled (as determined by genmake2) will turn on the
8079      embed_files package which then embeds the entire MITgcm source code
8080      (*.[fFhc] + Makefile) used for the build within the executable
8081      - requested by CNH but off by default
8082      - adds a paltry <9MB to the mitgcmuv executable in most cases
8083      - only writes the output when useEMBEDSRC in eedata is true
8084    o clean up 3-dim. relaxation codes:
8085      * Fix I/O inconsistency in pkg/rbcs: replace precFloat32 by readBinaryPrec
8086      * Remove 3-dim. relaxation code from pkg/exf (now use only pkg/rbcs)
8087      * Thanks to Tom Haine for testing!
8088    
8089    checkpoint57z_post (2005/12/31)
8090    o make CG3D solver compatible with Free-surface at k > 1 (p-coordinate):
8091      affects output (@ truncation level) of exp. plume_on_slope ; updated.
8092    o fix the pickup behavior for obcs in combination with ptracers
8093    o fix a bug in ptracers_external_fields_load
8094    o no AB-2 at the first iteration for Gw (consistent with Gu,Gv,Gt,Gs ...)
8095      affects results of NH experiments (but all our NH tests have Gw[it=1]==0 !!)
8096    o transfered surface NH pressure to eta field (if exactConserv).
8097    o gmredi: fix bugs in slope tapering ldd97 (depthZ had the wrong sign)
8098         and update lab_sea output.txt file.
8099    o completing 3-dim. relaxation code: additional term
8100         1/tau*( theta(i,j,k) - thetaStar(i,j,k) )
8101      in S/R EXTERNAL_FORCING_T (file external_forcing.F)
8102      * At compile time, in "EXF_OPTIONS.h" set
8103          #define  ALLOW_CLIMTEMP_RELAXATION
8104          #define  ALLOW_CLIMSALT_RELAXATION
8105      * At runtime in "data", under &PARM03 set (e.g., units in seconds)
8106          tauThetaClimRelax3Dim = 15552000.0,
8107          tauSaltClimRelax3Dim  = 15552000.0,
8108      * 3 cases:
8109          1) Use a constant-in-time 3-dim. field
8110          2) Provide 12 3-dim. fields corresponding to Jan., ... , Dec.
8111          3) Real-time relax. to time-evolving prescribed field
8112    o Adding Laplacian-type smoothness constraint on
8113      initial and boundary (forcing) controls (ic, bc)
8114      * enable at compile-time via
8115        ALLOW_SMOOTH_IC_COST_CONTRIBUTION, ALLOW_SMOOTH_BC_COST_CONTRIBUTION
8116      * enable at run-time via mult_smooth_ic = 1, mult_smooth_bc = 1
8117      * Absolute scale somewhat unclear so far
8118      * no area weighting was included since no other cost term does so far
8119    
8120    checkpoint57y_post (2005/12/08)
8121    First step for a NLFS adjoint
8122    o initially suppress rStar (new flag DISABLE_RSTAR_CODE)
8123    o new init. routines for calc_r_star, calc_surf_dr
8124    o still need to deal with ini_masks_etc
8125    o testreport seemed happy
8126    checkpoint57y_pre (2005/12/08)
8127    
8128    o obcs: always reset wVel & eta (to zero or prescribe it) at the OBs.
8129    o add new package rbcs (for relaxing ptracers at boundaries/depth/surface etc)
8130    o add new offset feature to offline pkg (plus minor cleanup)
8131    o cfc fixes for final year of integration
8132    o clean up GCHEM_OPTIONS.h/DIC_OPTIONS.h (all options should
8133      be in GCHEM_OPTIONS).
8134    
8135    checkpoint57x_post (2005/12/04)
8136    o fix testreport Pb in multiple test experiment.
8137    o cleanup our namelist syntax in verification:
8138      - make it more F95 standards compliant (some work still needed)
8139      - allows the vast majority of our tests to work with gfortran
8140    o Non-Hydrostatic:
8141     - put all NH variables (formerly in DYNVARS.h & GW.h) in NH_VARS.h
8142     - fix exchange calls for CS-grid using the new EXCH_S3D_RL.
8143    o Allow to apply AB on T,S rather than on AB(gT,gS):
8144     - implemented within #ifdef ALLOW_ADAMSBASHFORTH_3
8145     - use the same arrays (gtNm,gsNm) to hold tracer field at previous
8146       time-steps (if AB(T,S)) and tendencies (if AB(gT,gS)).
8147     - need a "clever" read_pickup to restart from the other AB formulation
8148    o move local commom bloc /GlobalLo/ (used for singleCpuIO) in EESUPPORT.h
8149    o remove some unused variables (reduces number of compiler warnings)
8150    o adjoint
8151      * Disable useVariableViscosity for adjoint for time being
8152        (there are a number of extensive recomputations)
8153      * Initialize certain variables needed for adjoint
8154    
8155    checkpoint57w_post (2005/11/03)
8156    o pkg/mdsio: use MAX_LEN_FNAM (instead of hard coded 80) for file-names
8157                 fix the singleCpuIO RS version of MDSWRITEFIELD
8158       and add a WARNING if using globalFiles=T with multi-processors.
8159    o write grid-file(s) in only one format (MDS or MNC): default=MNC (if
8160      using MNC); can force MDS output by setting writegrid_mnc=F in data.mnc
8161    o tracer advection scheme:
8162      add DST-2 (=Lax-Wendroff) & 1rst order upwind schemes (the way to get
8163       those 2 schemes before, changing GAD_FLUX_LIMITER.h + to recompile,
8164       was not very convenient).
8165      add implicit version for DST-3 & DST3_Flux_Limit vertical advection;  
8166       (further tests needed for the implicit DST & Flux-Limiter schemes).
8167    o PTRACERS: added namelist parameter PTRACERS_ref in analogy to tRef
8168      and sRef for convenience, handy, when you want to initialize
8169      ptracers in a large domain with a constant non-zero value. Also,
8170      untangle ptracers_init.F a little.
8171    
8172    checkpoint57v_post (2005/10/13)
8173    o change dome exp. to use variable viscosity in side-drag terms.
8174    o remove all the files from the cfc_offline test since they are now
8175      incorporated into tutorial_cfc_offline which has been producing
8176      identical results for a few days of testing
8177    o add new parameter: sideDragFactor to enable half-slip-side BC
8178      and change side-drag S/R to use viscosity from mom_calc_visc
8179      (can switch back by setting sideDragFactor=0.); affects results at
8180      truncation level; regenerate output for exp.: global_ocean.cs32x10(x3),
8181       global_ocean_ebm, global_ocean_pressure, matrix_example & MLAdjust(x5).
8182    o vorticity & strain are now computed without masking, to account for
8183      no-slip-side BC in variable viscosity calculation ; mask is applied
8184      anyway later on, before computing advection/coriolis terms.
8185    o modify exp4 to test new obcs support for reading from external files
8186      and for passive tracers
8187    o fix behavior of ptracers_monitor when monitor output is written to a
8188      netcdf-file; still not independent of monitor.F (writes in the same
8189      file).
8190    o change default value of tRef (put a uniform, meaningful value for ocean
8191      & atmos) and initialize sRef (was missing, as Martin mentioned).
8192    o Redefine viscC?Leith*.  Change the coefficients of Leith viscosity
8193      to be proportional to enstrophy dissipation length.  Thus,
8194       viscC?leith?_new=pi*(viscC?leith?_old)^(1/3)
8195      This is now consistent with Smagorinsky and with the manual.
8196    
8197    checkpoint57u_post
8198    o OBCS and PTRACERS: add open boundary support for passive tracers
8199      - either use homogenous (pseudo) v.Neumann conditions or prescribe
8200        OB-values from file; this is not different from the way theta and salinity
8201        are treated
8202      - however, Orlanski-radiation conditions are not supported, and the model
8203        will stop if you use pTracers and Orlanski at the same time.
8204      - beefed up the rountine obcs_external_fields_load: now only those open
8205        boundary values are overwritten with values from files for which there
8206        are really files, otherwise the OB-fields remain untouched. This makes
8207        it possible to use different OBs at different ends of the domain (as
8208        with EXF)
8209    o reduce number of exch calls in shap_filt (s2).
8210    o CS-grid: fix divergence contribution to Leith viscosity. Affects (@
8211      truncation level) 4/5 MLAdjust test results (11&12 digits match).
8212    
8213    checkpoint57t_post (2005/10/03)
8214    o test biharmonic viscosity + no-slip with exp: global_ocean.cs32x15.viscA4
8215    o finish adding brackets (coriolis S/R, vecinv) in multi-terms sum to get
8216      same truncation, independent of the face number: affects affects several
8217      test. exp.: Update global_ocean.cs32x15 (+.thsice) & MLAdjust (all 5).
8218    o fix bug in mom_v_sidedrag (biharmonic viscosity was counted 2 times);
8219      note that biharmonic viscosity + no-slip was not tested in any experiment.
8220    o fix bug in non-linear free-surf side-drag ; generate new output for
8221      global_ocean.cs32x15(+.thsice) & global_ocean_pressure.
8222    o make mnc honor the writeBinaryPrec flag for most kinds of output
8223    o eesupp: split EEPARAMS into EESIZE/EEPARAMS and add a vector global sum
8224    o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
8225      error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
8226    o add brackets in multi-terms sum to get same truncation, independent of
8227      the face number (manage to get exactly same value of gU,gV at the cs-edge)
8228      affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
8229    o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
8230      and viscA4Remax, which allow one to limit the minimum viscosity by specifying
8231      a maximum grid-scale Reynolds number.  Also, changes all length calculations
8232      in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
8233      Suggested values of viscosity parameters found in mom_calc_visc.
8234      Many new viscosity diagnostics available.
8235    
8236    checkpoint57s_post (2005/09/20)
8237    o Add clearing-house for viscosity calculations, mom_calc_visc and
8238      correct numerous bugs in LeithD and Smagorinsky discretizations.  
8239      mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be
8240      used simultaneously, and to be used in mom_vecinv and mom_fluxform.
8241      Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
8242      and with Strain-Tension viscous term calculation (mom_hdissip.F).  
8243      The Strain-Tension form is now called with useStrainTensonVisc=.true.
8244      ViscAhStrain and viscAhTension are now retired.
8245    o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
8246    o In response to JMC's bug report, genmake2 now ignores any soft-links
8247      that it finds in the *current* directory when searching for files.
8248      Soft-links found in any other source directories will still work as
8249      they did before.
8250    o add HAVE_SETRLSTK define and useSETRLSTK flag (eedata) which calls
8251      a C routine to unlimit the stack size
8252    o mnc-ify pkg/aim snapshot vars
8253    o mnc-ify pkg/land as requested by Daniel
8254    o various changes to mnc including:
8255      - all files use the new "BASENAME[[.ITER].{t|f}NUM].nc" format
8256      - output can now be grouped so that all files within a group
8257          change the ITER portion of their names in lock-step together
8258      - can now read ("global") PER-FACE (in addition to PER-TILE) files
8259          and works with both EXCH1 and EXCH2 (but needs more testing)
8260      - writing works for all verification test cases w/ g77 on Linux
8261    
8262    checkpoint57r_post (2005/09/07)
8263    o make MNC variable initialization happen earlier
8264    o add diagnostics for (almost) each term of the momentum Eq.
8265    o remove SST,SSS,UVEL_k2,VVEL_k2 diagnostics.
8266    o move pkg timeave out of pkg-groups "oceanic" & "atmospheric" (pkg/pkg_groups)
8267    o remove MINIMAL_TAVE_OUTPUT option ;
8268      add "dumpInitAndLast" to replace "nodumps" (and MINIMAL_TAVE_OUTPUT).
8269    o move some basic S/R (used elsewhere in the code) from pkg/mdsio to eesupp/src
8270      allows to compile without pkg/mdsio (& test successfully hs94.1x64x5)
8271    o add MNC output for adjoint of EXF (adexf), SEAICE (adseaice)
8272    o add time-dependent SST, SSS control
8273    o cost terms in ecco/ modularized (new cost_generic.F)
8274    o cost_averages routines are modularized (new cost_averagesgeneric.F)
8275    o new infrastructure for seaice model vs. obs misfits in seaice/
8276      * driver from the_main_loop.F is seaice_cost_driver.F
8277      * first term is AREA vs. SMR observation misfit (ALLOW_SEAICE_COST_SMR_AREA)
8278      * gradient check in Exp. 6a of natl_box_adjoint/
8279    o natl_box_adjoint input_seaice for Lab. Sea now available online via wget
8280      (see README file)
8281    
8282    checkpoint57q_post (2005/08/19)
8283    o fix initialisation Pb in calc_gw (get NANs in exp5 with g77)
8284    o fix annoying months-old bug in mnc/mdsio output for seaice pkg
8285      - bug was reported by Jean-Michel and Ian Fenty
8286    o fix initialization Pb in AIM-Ocean coupled model (aim_sice2aim.F)
8287      update exp. cpl_aim+ocn output.
8288    o Implement 4-level checkpointing: AUTODIFF_4_LEVEL_CHECKPOINT
8289      Needed for high-res. runs with large global files
8290      to be able to limit tapelev size
8291    o Changed some tests for adjoint:
8292      * carbon/ now tests AUTODIFF_2_LEVEL_CHECKPOINT
8293      * natl_box_adjoint/code_bulk/ tests AUTODIFF_4_LEVEL_CHECKPOINT
8294      * global_ocean.90x40x15/ back to default 3-level checkpointing
8295    o Modifications to enable scripted COMMON to MODULE conversion
8296      * verification/OpenAD/code/ has necessary scripts and description;
8297      * converts, compiles and runs successfully;
8298    
8299    checkpoint57p_post (2005/08/01)
8300    o reading of delXfile & delYfile moved from ini_parms.F to ini_grid.F
8301    o move ${PKG}_MNC_INIT from ${PKG}_READ_PARAMS to ${PKG}_INIT_FIXED
8302      (already the case for some pkgs, including recent MNC_init, e.g. thsice)
8303    o call CALC_GW from DYNAMICS (instead of from FORWARD_STEP)
8304    o Dissipation & phiHyd gradient are always added to gU,gV in timestep.F
8305      (was already the case for dissipation with mom_vecinv,
8306       and also the case for grad.PhiHyd when staggered-timeStep)
8307      This will allow to put dissipation out-off the AB time-stepping.
8308     Unfortunately, affects truncation error. Update output of exp. that "fails"
8309      (cg2d matching number) and leave the others for later: front_relax(10),
8310      global_ocean_pressure(10),ideal_2D_oce(10),internal_wave(9),lab_sea(12),
8311      matrix_example(7!),natl_box(12),plume_on_slope(11),vermix(12x3,11x2).
8312    
8313    checkpoint57o_post (2005/07/30)
8314    o fix MNC/MDSIO flags in PTRACERS so that (1) it works, and
8315      (2) its ready to be documented during the 20050801 DocFest
8316    o MNC-ify the gmredi package -- tested and works w/ and w/o mnc
8317      for ideal_2D_oce and lab_sea on linux_ia32_g77
8318    o set to #undef CTRL_SET_OLD_MAXCVARS_30
8319      in global1x1_tot/code_seaice_adj to access indices 32, 33
8320      (worth another tag)
8321    
8322    checkpoint57n_post (2005/07/29)
8323    o adding precip control xx_precip 32
8324    o adding swflux control xx_swflux 33
8325    o Replacing 10 forcing penalty cost routines by 1 generic.
8326    o Implementing partitioning in time-mean and variable adjustment
8327      for atmos. state.
8328    o Time-mean constant error is now read in data.ecco (instead of hard-coded)
8329    o in natl_box_adjoint:
8330      * updated exp 1 to 10
8331        (but does not have time-mean vs. variable split results yet)
8332    o updated global1x1/*_seaice_adj/
8333      to incorporate latest changes
8334    o enable useSingleCpuIO for mdsio vector routines
8335      (applies in particular to tapelev I/O)
8336    o removed inefficient K-loop in all active_file*control*.F
8337    
8338    checkpoint57m_post (2005/07/28)
8339    o re-arrange exp. adjustment.cs-32x32x1 (adjust_nlfs.cs-32x32x1 merge into)
8340      and advect_cs (use EXCH-2 and standard cs-32 grid files).
8341    o pkg/exch2: filling of face-corner halo regions is optional
8342      (ifdef W2_FILL_NULL_REGIONS) and is turned off by default.
8343    
8344    checkpoint57l_post (2005/07/14)
8345     tag before updating tutorials (pre-release-2)
8346    o add cos & sin of grid-direction orientation angle (curvilinear grid only,
8347       for output and interpolation of input fields onto model grid)
8348    o fix radius in mom_v_metric_cylinder.F (wrong by dy/2).
8349       Affects results of exp. rotating_tank ; update output.txt.
8350    o pkg/diagnostics: 2 new S/R to fill a diagnostics using a scaling factor
8351          and taking the square quantity and/or using a fraction-weight field.
8352    o fix aim_diagnostics_init.F mate numbers.
8353    o add mnc output capability to diagnostics/diagstat and update
8354      our cvsignore files for the ACSII output generated
8355    
8356    checkpoint57k_post (2005/07/02)
8357    o lab_sea now uses diagnostics package and provides a suite of
8358      new EXF diagnostics output.
8359    
8360    checkpoint57j_post (2005/06/30)
8361    o exf
8362      * bug fix in exf_bulkformulae for psimh (spotted by Eliyahu Biton):
8363        Bracket missing in eqn. for psimh (eqn. 7 of Large & Pond, 1982);
8364        terms -2*ATAN(x) + pi/2 were added to both stable and unstable case.
8365      * extended diagnostics output
8366        - now includes all EXF variables
8367        - hs, hl moved to common block
8368        - separate S/R for diagnostics, called after ctrl vector is added
8369        - name changed for EXFsw -> EXFswnet, EXFlw -> EXFlwnet
8370        - EXFqnet contains true Qnet (i.e. includes qsw)
8371      * updated verif. lab_sea, global_with_exf
8372      * Rearranging hflux (exf_mapfields -> exf_getforcing)
8373        to ensure that diagnostics sees a true EXFqnet
8374    o add matlab scripts for CS-grid vectors (in utils/cs_grid)
8375    o diagnostics pkg: change pointers so that 1 diagnostic can be used
8376      several times with different frequencies.
8377    o mnc-ify the thsice package as requested by Daniel Enderton
8378      - the monitor--MNC output needs work
8379      - many attributes need to be added (most are currently blank)
8380    o mnc-ify theaim_v23 package as requested by Daniel Enderton
8381      - many attributes need to be added (most are currently blank)
8382    o remove "groundAtK1" & "rkFac" (replaced by usingPCoords & -rkSign)
8383    o add Sadourny like discretization to the 4th.O vorticity advection scheme
8384    o fix bug in rStar code (calc_r_star.F) when used with topo/bathy.
8385      update output.txt from: aim.5l_cs (& .thSI), cpl_aim+ocn,
8386         fizhi-gridalt-hs and global_ocean.cs32x15 (& .thsice).
8387    o fix few little things to avoid floating error with -ftrapuv (ifort v9)
8388     (ini_spherical_polar_grid.F, calc_r_star.F, monitor/mon_surfcor.F)
8389    
8390    checkpoint57i_post (2005/06/19)
8391    o Diagnostics package was changed: diagnostic allocation is now deactivated
8392      by setting an empty file name in the namelist (used to be by setting 0 frequency)
8393    o momentum advection (VI form) options: activate 4th.O vorticity Coriolis ;
8394      add 1rst Order upwind vertical Shear.
8395    o add a quick fix for A/B checkpointing in OFFLINE mode
8396    o add IGNORE_TIME define and -ignore_time option to genmake2 as an
8397      end-run around the C/Fortran linking horror in eesup/src/timers.F
8398    o added pkg/runclock: allows user to terminate run based on wall clock
8399    o added non-hydrostatic scaling parameter: nh_am2
8400    o pkg/my82: futile attempt to make results compiler-independent by adding
8401      some "_d 0", etc. no effect.
8402    o for mnc output, fill the 'T' coordinate var with myTime and create a
8403      separate 'iter' variable for iteration count
8404    o pkg/diagnostics:
8405      add new capability: output of Global/Regional & per-level statistics ;
8406      tested against monitor output (including land & thSIce) on various exp.
8407    o make seaice-pkg I/O type flags (MNC/MDS) more standard.
8408    
8409    checkpoint57h_done (2005/05/19)
8410      tag after changing user customized files (DIAGNOSTICS_SIZE.h,
8411      data.diagnostics, data.gchem, data.ptracers) is done.
8412    
8413    o pkg/diagnostics: prepare for Global/Regional statistics.
8414      add 2nd namelist in data.diagnostics and update DIAGNOSTICS_SIZE.h
8415    o remove "baseTime" (no used) from arg. list of DIFF_BASE_MULTIPLE
8416      and rename it: DIFFERENT_MULTIPLE
8417    
8418    checkpoint57h_post (2005/05/14)
8419    o move tIter0 from data.gchem to PTRACERS_Iter0 in data.ptracers
8420    o pkg/diagnostics: change output frequency, now in seconds (instead
8421      of Nb of iterations). This requires to change data.diagnostics.
8422    checkpoint57h_pre (2005/05/12)
8423    
8424    o in mnc, let the user create the output dir if both mnc_outdir_date
8425      and mnc_outdir_num are false
8426    o add fflags() to pkg/diagnostics which allows one to specify, on a
8427      per-file basis, the file precision [default behavior is unchanged]
8428    o added diagnostics to pkg/kpp, including computation of mixed layer
8429      depth based on a temperature/density criterion
8430    o updated verification/natl_box to test the new pkg/kpp diagnostics
8431    o bugs fixed (with useAbsVorticity=T & with useJamartMomAdv=T)
8432    o test AB-3 code with 4th.Order advection scheme (advect_xy/input.ab3_c4)
8433    o fix mnc flags in pkg/seaice so that they are "owned" by seaice,
8434      not mnc -- this mistake was found by JMC and is now corrected
8435    
8436    checkpoint57g_post (2005/04/15)
8437    o add Adams-Bashforth 3rd Order time stepping:
8438      - default remains AB-2 (#undef ALLOW_ADAMSBASHFORTH_3)
8439      - not yet implemented with NH, CD_Scheme, pTracers, MNC_pickup ...
8440    checkpoint57g_pre (2005/04/15)
8441    
8442    o make lambda[Theta,Salt]ClimRelax spatially varying
8443      (default remains spatially uniform constant based on tau)
8444    o added new control variables
8445      * init. uVel, vVel, etanN
8446      * lambda[Theta,Salt]ClimRelax
8447    o separate masks used for ctrl_pack/unpack 'from write_grid' output
8448      (suggested by G. Forget)
8449    
8450    checkpoint57f_post (2005/04/06)
8451    o add parameter "baseTime" = model base time = time at iteration zero
8452      new function DIFF_BASE_MULTIPLE (replace DIFFERENT_MULTIPLE) to
8453      account for baseTime shift
8454    o move Coriolis arrays from PARAMS.h to GRID.h
8455    checkpoint57f_pre (2005/04/06)
8456    
8457    o mnc-ifying the seaice package
8458    o introduced an alternative length scale calculation for use in the limiting
8459      maximum viscosity (off by default, see mom_vi_hdissip.F for details)
8460    o S/R ptracers_calc_diff: argument list bug for CALL KPP_CALC_DIFF_S
8461    o added modified Leith scheme with viscosity proportional to grad(Hdiv)
8462      as well as grad(vort3).  Made it compatible with both approximate form
8463      for the cubed sphere and full form of these gradients.  Added flag
8464      useFullLeith to select between approximate and full form.  
8465    o add "d0" in getcon.F to reduce differences between compilers/platforms
8466      update output.txt of exp. fizhi-gridalt-hs
8467    o change port_rand funtion to allow to set the seed.
8468    o fix obscure MNC bug involving conversion between reals and integers
8469      - it caused no problems with certain (eg. gcc, ifc) compilers but the
8470        new version is now more standards-compliant
8471    o adjoint-related modifications
8472      * gad_dst3_adv_?: to be able to use advscheme=30 in adjoint
8473      * gad_calc_rhs: fool adjoint, revert to advscheme=30 in reverse when using 33
8474      * mom_vi_hdissip: to be able to use Leith scheme in adjoint
8475    
8476    checkpoint57e_post (2005/02/28)
8477    o Adding eddy stress controls a la Ferreira et al.
8478    checkpoint57e_pre (actually was tagged: eckpoint57e_pre)
8479    
8480    o fizhi pkg: fix AtoC and CtoA when called with same input & output array
8481      update output.txt of exp. fizhi-gridalt-hs
8482    o add more "Z" dimensions and associated coordinate vars to MNC
8483    o pkg/exf: added twoDigitYear capability for option useExfYearlyFields
8484    o parameter calendarDumps: when set, approximate months (30-31 days) and years
8485      (360-372 days) for parameters chkPtFreq, pChkPtFreq, taveFreq, SEAICE_taveFreq,
8486      KPP_taveFreq, and freq in pkg/diagnostics are converted to exact calendar
8487      months and years.  Requires pkg/cal.
8488    o diagnostics: add pickup functionality
8489      - off by default for backwards compatibility
8490      - current version only uses MDSIO -- MNC will be added
8491    o allow to use pkg diagnostics for LAND pkg output & Shapiro Tendencies.
8492    o pkg/shap_filt: fix for multi-tiles per face (CS-grid with EXCH2)
8493    
8494    checkpoint57d_post (2005/02/11)
8495    o pkg/thsice used in the ocean: fix tile Pb related to sIceLoad forcing
8496    o modify verification/ideal_2D_oce so that it tests the creation of mnc
8497      output from the diagnostics package
8498    o temporary fix in EXCH2_UV: add a 3rd call to fix the 24.tiles CS-grid set-up
8499    o make genmake2 more portable by using ".$FS" instead of ".f" for more
8500      of the test compilations (eg. IBM xlf on Mac OSX w/HFS filesys)
8501    o add coordinate variables to the MNC output from the diagnostics package
8502    o change MNC-flags default value: true when useMNC=TRUE
8503    o add a "readgrid_mnc" flag to MNC and give model/src/ini_curvilinear_grid.F
8504      the ability (off by default) to read the grid information using MNC
8505    o lab_sea: use LSR_ERROR=1.E-12 for testing ; update output.txt
8506    o diagnostics: fix a bug (sub-set of levels); keep full precision when averaging
8507    o do snap-shot diagnostics at the middle of the time-interval (instead of
8508      at the end).
8509    o update exp. aim.5l_cs (use default LAND_OPTIONS.h file) and add
8510      new test for AIM with thSIce + slab-ocean
8511    o cpl_aim+ocn test: update output (optfile & default GMREDI_OPTIONS.h)
8512    o move state variable diagnostics to the beginning of the time step ;
8513      (note: still needs some work specially for snap-shot diagnostics)
8514      duplicate & replace UVELVVEL diagnostics with UV_VEL_C & UV_VEL_Z
8515    
8516    checkpoint57c_post (2005/01/27)
8517    o Change testing option (-ieee) to get closer agreement between g77 & ifort
8518    o generate new output.txt files on faulks with g77 & the new -ieee option
8519    checkpoint57c_pre (2005/01/27)
8520    
8521    o add "_d 0" in freeze ; change some "FLOAT" to "DFLOAT" and went back (TAF);
8522      update output.txt of exp. global_ocean.90x40x15
8523    o fix in ini_eos.F (one "_d 0" was missing): now g77 & ifc give much closer
8524      results; update global_ocean_pressure & global_ocean.cs32x15 output.txt
8525    o add saltFlux(+File) forcing capability with periodicExternalForcing
8526    o allow to use pkg diagnostics for GM-Redi & ThSIce output
8527    o diagnostics_fill: fill in up to sNx+1 or sNy+1 (if U,V or Z pt) for mnc.
8528    o improvements for the MNC output from DIAGNOSTICS:
8529      - correct handling of the unlimitied dimension
8530      - all dims now have associated coordinate variables
8531      - variables located at U, V, and Corner ("Z") points are now written
8532        with the correct horzontal dimensions (eg. 'Xp1', 'Yp1') so that
8533        *all* data points are output
8534    o added seaice_summary.F and removed obsolete ALLOW_SEAICE's from pkg/seaice
8535    o added pkg/seaice/seaice_monitor.F
8536    o mdsio_readfield.F can now read files visible only to master MPI process.
8537    o pkg/seaice: some test code for ice-modified ocean stress
8538    o exf_getffields interpolation defaults to bilinear for all scalar forcing
8539      fields (remains bicubic for wind velocity and stress).  This avoids, e.g.,
8540      spurious negative numbers for precipitation and humidity.  Will cause
8541      some small numerical differences for integrations using pkg/exf/exf_interp.F.
8542    o pkg/ctrl/
8543      * Add ctrlvec diagnostics in pack/unpack for nondimensional I/O
8544        May be enabled via doPackDiag
8545      *  introduce z-scaling of
8546         + gradient (doZscalePack) and
8547         + control (doZscaleUnpack)
8548    o pkg/mdsio/
8549      * enable useSingleCpuIO for state estimation (ctrl_pack/unpack) mdsio_gl.F
8550      * N.B.: leave tiled I/O for tapelev (i.e. mds...vector)
8551    
8552    checkpoint57b_post (2004/12/20)
8553    o simplify options in diagnostics_fill arguments (remove weird combinations)
8554    o fix MNC coordinate variables so that they now contain per-face index
8555      values (instead of xC,xG,yC,yG values) when run with EXCH2 since, in
8556      general, EXCH2 grids are only aligned to a "local" coordinate system
8557    o test diagnostics pkg in dic_example (no output) and ideal_2D_oce (with ouput)
8558    o Implement instantaneous output within pkg diagnostics:
8559      setting a negative frequency in data.diagnostics produces
8560     "snap-shot" output (as opposed to time-average if freq > 0)
8561    o move out off EQUIVALENCE all diagnostics that fizhi does not use ;
8562      NOTE: change ptracer diagnostics name: use 2 characters to work with
8563            more than 9 tracers. Add also diagnostics of advect & diffus flux.
8564    o more CF compliance: convert all MNC 'iter' variables to 'T' so that it
8565      becomes the coordinate variable for the 'T' dimension
8566    o add CF-style coordinate variables to MNC
8567      - just a first cut:  numbers are meaningless on the cubesphere and
8568        missing along the T axis but otherwise it works!
8569    o add surface flux diagnostics: TAUX, TAUY, TFLUX, TRELAX, TICE, SFLUX, SRELAX
8570    o pkg/thSIce: read initial state from 6 files ; allow monitor to use MNC.
8571    o add diagnostics of advective & diffusive flux for T & S (pTracers coming soon)
8572      this is based directly on what the model compute, so that the content of
8573      each diagnostics might be affected by switching options (e.g., implicitDiffusion)
8574    o small changes for diagnostics (gad_biharm_?.F, arguments of S/R impldiff.F)
8575    o clean up build options files for SunOS, in particular
8576      - remove -traditional from xmakedepend
8577      - change -xarch=v9 to -xarch=native for f77
8578      - restore use of make (not gmake)
8579      - add CC=gcc if using g77
8580    o changes per discussion of AM, JMC, & EH3 today:
8581      - move redundant "grid" variables out of "state" -- in preparation of
8582        creating proper CF-style coordinate variables and in recognition
8583        that any/all grid variables can be easily copied (eg. w/NCO) from
8584        the grid files into any of the other NetCDF files
8585      - *always* output grid variables with MDSIO (this will eventually be
8586        changed)
8587      - output MNC grid file if useMNC is true
8588    o every instance of _END_MASTER() has been found and replaced with
8589      _END_MASTER( myThid ) in order to satisfy certain picky Sun
8590      preprocessors
8591    o re-arrange diagnostics pkg initialisation:
8592     - allow each package to extend the available diagnostics list
8593     - add some checking and fix small problems (multi-threaded, ...)
8594     - new S/R diagnostics_fill (replace fill_diagnostics):
8595       look through the short list of active diag. (instead of the long list)
8596       create function DIAGNOSTICS_IS_ON to tell if a diagnostics is active
8597    
8598    checkpoint57a_post (2004/12/10)
8599    o this set of changes restores TAMC compatibility
8600      tested for global_ocean.90x40x15 adjoint on trough
8601      (what a pain)
8602    
8603    checkpoint57a_pre (2004/12/10)
8604    o some modifs in tools/build_options for sunos
8605    o call ctrl_pack for ctrl at end for optimcycle=0
8606    
8607    checkpoint57 (2004/12/09)
8608    o add horizontal bi-harmonic viscosity for vertical velocity
8609      - new parameter viscA4W (defaults to viscA4)
8610      - affects only non-hydrostatic code
8611      - to be done: no-slip lateral boundary conditions
8612    o switch back to "sflux = sflux - runoff" in exf_getforcing.F
8613    o implement Implicit Vertical advection for pTracers
8614    o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
8615      (implemented also for implicit vertical diffusion & advection)
8616    o OBCS: extend application of tracer open boundary conditions
8617      to a strip beyond the boundary of width Olx/Oly
8618    o add call monitor to TAF set of required calls (flow directives)
8619      and include in natl_box_adjoint
8620    o untangle a few ifdefs related to cost, ctrl, autodiff
8621      untangel a few ALLOW_ECCO_OPTIMIZATION
8622    o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
8623      (theta2, salt2 in ecco_cost_weights)
8624    
8625    checkpoint56c_post (2004/12/03)
8626    o OBCS as control variables
8627      - update ctrl_ad_diff.list, obcs_ad_diff.list
8628      - remove balance of obcs controls from default
8629      - fix index bug nobcs in ctrl_init
8630      - fix dummy fields filen in ctrl_pack
8631      - add dummy weights for obcs
8632    o lsopt: comment out fort.94 output
8633    o optim:
8634      - remove unnecessary header files
8635      - adjusted namelists
8636      - add xerbla.F to Makefile
8637    o exf:
8638      - multiple modifications of exf_check_range
8639      - unit change in exf_init_runoff from [m/year] to [m/s]
8640    o mdsio:
8641      - i/o-vector change debugLevel from debLevA to debLevB
8642    
8643    checkpoint56b_post (2004/12/01)
8644    o collect all ptracers output in an new routine (PTRACERS_OUTPUT) that
8645      is called from DO_THE_MODEL_IO
8646      - rename PTRACERS_STATV_WRITE to PTRACERS_WRITE_TIMEAVE
8647      - introduce new parameter PTRACERS_dumpFreq (defaults to dumpFreq)
8648      - clean up PTRACERS_WRITE_TIMEAVE a little
8649    o add another verification experiment that tests both the cfc-pkg and
8650      the gchem-pkg with GCHEM_SEPARATE_FORCING undefined, that is with
8651      reactive tendencies treated inline with regular timestepping
8652    o testreport previously did a lousy job of comparing small numbers, so
8653      we (Ed and Martin) changed the  way the cut-off of 1.e-12 is
8654      implemented in the little c-progam tmp_cmpnum.c which is embedded in
8655      testreport.
8656    o ptracers_monitor: bug fix for MPI
8657    
8658    checkpoint56a_post (2004/11/28)
8659    o GCHEM: finish reorganizating the package
8660      - forward_step calls GCHEM_CALC_TENDENDY, which computes gchemTendency
8661        (introduces another 3D-array for each passive tracer, but only if
8662        GCHEM_SEPARATE_FORCING is undefined. For GCHEM_SEPARATE_FORCING
8663        gchemTendency is not needed because the timestep is done separately)
8664      - gchemTendency is added to gPtr in GCHEM_ADD_TENDENCY
8665      - GCHEM is now---more or less cleanly---separate from PTRACERS
8666      - to bo done: handling of surfaceForcingPtr that is needed for KPP not
8667        so clear to me how that should be done in a general way.
8668    o CFC: improve formatting of output in CFC_ATMOS
8669    o PTRACERS:
8670      - rename GCHEM_MONITOR to PTRACERS_MONITOR and call it from MONITOR, so
8671        that ALL experiments with ptracers enable can be checked. This makes
8672        GCHEM_MONITOR obsolete.
8673      - include a runtime parameter PTRACERS_monitorFreq that defaults to
8674        monitorFreq
8675      - set default PTRACERS_write_mdsio to false if PTRACERS_write_mnc is true
8676    o add PTRACERS (PTR0[1-5]) to testreport output
8677    o exf_check_range:
8678      * default changed to .TRUE.
8679      * will check values for niter0 if debLevA, every timestep if debLevB
8680      * STOP in exf_check_range if 'out of range'
8681      * range chosen generous to allow for potential extema
8682      TBD: a version with stricter range
8683           permitted range would be runtime parameters
8684    o GMredi:
8685      - fix ldd97 slope limit ; extend valid domain of Psi-Bolus ;
8686      - change S/R GRAD_SIGMA to be valid in the overlap on CS-grid.
8687      - change the default GMREDI_OPTIONS.h: compile everything except Visbeck
8688    o GCHEM:
8689      - move call to GCHEM_FORCING_SEP, so that it is now called before
8690        the blocking exchanges to avoid computing halos in GCHEM_FORCING_SEP
8691      - introduced a useGCHEM runtime flag and applied it everywhere.
8692      - renamed PTRACERS_SEPARATE_FORCING to GCHEM_SEPARATE_FORCING;
8693        this flag is now only visible within GCHEM-pkg routines.
8694      - moved gchem_forcing_int temporarily into ptracers_forcing, this will
8695        be replaced by a 3D array that is computed before thermodynamics; for
8696        this, the tracer ID iTracer had to be included into the parameter list
8697        of ptracers_forcing
8698      - set up forward_step to call gchem_forcing, that will replace
8699        gchem_forcing_int in ptracers_forcing
8700      - cleaning up
8701    o small cleaning of exch2: remove files that are also in eesupp/src
8702    
8703    checkpoint56 (2004/11/17)
8704    o AIM: read land-Fraction earlier (from ini-fixed) and monitor land at nIter0
8705    o mnc: cleanup "full" files--fixes out-of-memory problem
8706    o ECCO-GODAE
8707      * model/, pkg/, code/, input/ now complete w.r.t. ECCO-GODAE production setup
8708      * fully merged and updated from SIO code
8709        windstress sign change affects
8710        - exf_inscal_[u/v]stress
8711        - sign of xx_tau[u/v] adjustments
8712        - signs in cost_scat
8713      * ctrl_get_gen: avoid update of tau[u/v] for first few days
8714      * natl_box_adjoint updated and compressed
8715      * 2-level checkpoint switch added
8716        (tested in EXP. 1 of natl_box_adjoint)
8717      * new switch doInitXX to avoid init. of xx_... in optimcycle=0
8718    o SVD
8719      * first complete, non-hacked version for SVD calculations
8720      * all interfaces clean w.r.t to handling of xx_..., adxx_..., g_xx_...
8721        performed via direct access files admtlm_vector.it????
8722        (via ctrl_[un]pack)
8723      * optimcycle is used for ARPACK iteration counter
8724        (note: adxx_... is iterated, rather than xx_...; latter is constant!)
8725      * EV problem ok w.r.t. L2-norm in tangent space; need to check other norms
8726        and add linear transforms where necessary
8727      * controls are initial/final SST, SSS (can be extended; need to check
8728        ctrl_set_[un]pack_xyz.F according to ctrl_set_[un]pack_xy.F
8729    o mdsio: filename info to both stderr, stdout
8730    o exf: exf_inscal_runoff: separated default conversion [m/year] -> [m/sec]
8731      from sign change
8732    
8733    checkpoint55j_post (2004/11/10)
8734    o isolate dissipation tendency (allow to keep it out off AB) in V.I form.
8735      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
8736    o add consistent build directories and .cvsignore files to verification
8737    o added viscA4GridMin and viscA4GridMax for more control on biharmonic viscosity
8738    o make all subroutines 30 or less characters in length for certain older
8739      compilers to work (a thorough search only turns up two routines in
8740      pkg/ptracers)
8741    o allow (vecinv only) a different horiz. viscosity for Divergence and Vorticity;
8742      affects (truncation level) output.txt of global_ocean.cs32x15(&.thsice)
8743    
8744    checkpoint55i_post (2004/10/28)
8745    o change arrays for total vertical diffusivity (2.D if explicit,
8746      3.D if implicit) ; each ptracer uses its own background value.
8747    o added mnc/NetCDF output capability to ocn_compon_interf
8748      - added bits to verification/cpl_aim+ocn so that it can run on
8749        ITRDA and other clusters without the mpirun "-wd" option
8750    o fixed wayward endif in mom_fluxform.F that messed up cyclindrical
8751      configuration
8752    o give MNC the ability to create additional files rather than
8753      exceeding a specified file size limit "MNC_MAX_FILESIZE"
8754      - the default is just less than 2GB which is a practical limit
8755        on many systems
8756    o Compute the non-local term using either KPP vertical diffusivity (=default)
8757       or the total vertical diffusivity (when KPP_ghatUseTotalDiffus=T)
8758    
8759    checkpoint55h_post (2004/10/20)
8760    o add verification test "vermix"
8761    o remove all the *_ioinc flags and replace with the single global
8762      outputTypesInclusive flag
8763    o allow to set a vertical profile of vertical diffusivity for T & S
8764    o call PACKAGE_BOOT & PACKAGES_READPARMS just after INI_PARMS
8765    o useMNC moved from data.mnc to data.pkg
8766    
8767    checkpoint55g_post (2004/10/14)
8768    o Renaming carbon AD experiments to comply with testreport conventions
8769    o Updating adjoint of Held-Suarez hs94.1x64x5
8770    o Fixing directives for non-ECCO forward_step, after ECCO directives
8771      have been fixed to avoid recomp. of do_oceanic_phys
8772      Works well for global_ocean.90x40x15,
8773      but recomp. issue remains for carbon
8774    o Updating adjoint output for natl_box_adjoint after
8775      pkg/ecco has been modified (see taga c55d_post)
8776    
8777    checkpoint55f_post (2004/10/13)
8778    o rename to timeave_init_fixed
8779    
8780    checkpoint55e_post (2004/10/13)
8781    o some delicate re-shuffle of store directives to avoid one
8782      extra call of do_oceanic_physics
8783      affects ecco_the_main_loop.F, do_oceanic_physics.F
8784      checkpoint_lev1_directives.h
8785    o NB: this may break global_ocean adjoint temporarily,
8786      but it is clear how to fix it. Will do later, need this now.
8787    
8788    checkpoint55d_post (2004/10/11)
8789    o ECCO specific cost function terms (up-to-date with 1x1 runs)
8790    o ecco_cost_weights is modified to 1x1 runs
8791    o modifs to allow observations to be read in as
8792      single file or yearly files
8793    o enable to read exf forcing fields as either
8794      single file or yearly files (flag useExfYearlyFields)
8795    checkpoint55d_pre (2004/10/08)
8796    
8797    o switch between 2-level and 3-level checkpointing
8798    o add ability of MNC to write local and "partial" (eg. 2D slices where
8799      the full 3D field is never actually stored) arrays to NetCDF files
8800      with the correct (that is, the complete multi-dimensional) set of
8801      array indicies
8802      - used in mom_vecinv() to write the diagFreq output
8803      - tested (demonstrated) in verification/aim.5l_cs
8804    o further mnc-ification
8805      - add verification/lab_sea to the list with mnc setups
8806      - fix undefined mnc v-names in cd_code
8807      - add kpp to mnc output (both snapshot and timeave)
8808    o non-hydrostatic code
8809      - added horizontal viscosity parameter viscAhW for w, that replaces viscAh
8810        in calc_gw.F
8811      - defaults to viscAh
8812      - this is useful, when I want to use viscAh=0 (e.g., only biharmonic
8813        friction or Leith) in non-hydrostatic mode, as long as there is
8814        no biharmonic friction and/or Leigth or equivalent for vertical velocity.
8815    o pkg/cost
8816      extend simple cost functions to treat time mean quantities
8817      (T,U,V) via cost_accumulate_state from cost_tile
8818    o multidimAdvection on CS-grid: implement the full 3 pass ; overlap needs to
8819        be 2 times larger than the minimum size the advection scheme requires.
8820        now get a perfect conservation of salt in advect_cs test-exp (updated)
8821    o GGL90 (Gaspar's TKE mixed layer)
8822      - add horizontal diffusion of TKE, requires exchanges in
8823        do_fields_blocking_exchanges, horizontal diffusivity is zero by
8824        default. In OPA there is no horizontal diffusion of TKE but the
8825        mixing coefficients are computed from a horizontal average of TKE of
8826        6 points or so. I think that diffusion has a little more physical
8827        justification.
8828      - clean up ggl90_calc in the hope of reducing memory usage (this hope
8829        was in vain)
8830      - mask tke-variable in ggl90_init
8831    o fix mask Pb in multidimAdvection on CS-grid (still a small Pb with ipass)
8832    o fix biharmonic diffusion on CS-grid.
8833    o more obcs stuff
8834      - added obcs_external_fields_load as an alternative to the EXF-pkg option
8835        for reading boundary values. This routine is called from
8836        obcs_prescribe_read
8837      - updated obcs_check
8838      - changed sponge layer relaxation parameter units for days to seconds
8839      - turned off sponge layer by default
8840      - changed argument list of OBCS_CALC to myTime+deltaTclock
8841      - fixed about 35 bugs in obcs_external_fields_load
8842    
8843    checkpoint55c_post (2004/09/23)
8844    o obcs stuff
8845      - new runtime flags useOBCSprescribe, useOBCSbalance
8846      - re-arranged obcs_calc
8847      - moved exf_getobcs to obcs_prescibe_read
8848        obcs_prescibe_read is called after ORLANSKI stuff
8849        and independent of it (executable can contain all).
8850      - updated obcs_check
8851      - added exchanges for U,V,gU,gV for useOBCSprescribe=.TRUE.
8852        These may be necessary only if tangential velocities are
8853        prescribed at OB, not sure, needs testing.
8854    o make the MNC_CW_ADD_VATTR_* subroutines all take scalar arguments
8855      which simplifies the calls and passes the ifc check-bounds test
8856    
8857    checkpoint55b_post (2004/09/22)
8858    o add a 2D scalar, Z location, exchange_2 routine.
8859    o EXCH_UV for CS-grid: add one u,v in the corner-halo region, allows
8860      to compute vorticity on a wider stencil [e.g., vort3(0,1)&(1,0)]
8861      affects advect_cs results (for the wrong reason): update output.txt
8862    o use a more standard discretization for biharmonic viscosity ;
8863     (original version still available with #define MOM_VI_ORIGINAL_VISCA4 )
8864      affects results of dome set-up: update output.txt
8865    o fix gad_advection.F (CubedSphere part), back to version 1.23
8866    o fix bug in mom_vi_del2uv.F (CubedSphere part).
8867    
8868    checkpoint55a_post (2004/09/20)
8869    o merged code to
8870      * prescribe/read time-dependent open boundaries
8871        (works in conjunction with exf, cal)
8872      * sponge layer code for open boundaries
8873      * each boundary N/S/E/W now has its own CPP option
8874        (healthy for the adjoint)
8875    
8876    checkpoint55 (2004/09/17)
8877    o up-to-date adjoint of previous breaks
8878      - natl_box_adjoint: problem for exp 12, 13: cost = 0. needs fix
8879      - global_ocean_ebm: adjoint still needs fix (TLM ok)
8880      - global_ocean.90x40x15: extended GMREDI_OPTIONS.h
8881      - carbon: * remove tr1-related adjoint verification
8882                * add ptracer as control variable
8883    o remove all tr1-related code (ALLOW_PASSIVE_TRACER)
8884      (adjoint stuff still has some tr1 'names', but all use ptracer arrays)
8885    
8886    checkpoint54f_post (2004/09/16)
8887    o in verification/carbin/ remove experiment related to
8888      ALLOW_PASSIVE_TRACER (array tr1 etc)
8889      code_ad/ input_ad/ results_ad
8890    
8891    o add two new packages
8892      - ggl90, TKE-model of Gaspar et al. (1990), Blanke+Delecluse (1993)
8893        + subject to optimization (memory)
8894      - opps, OPPS (ocean penetrative plume scheme) of Paluszkiewicz+Romea (1997)
8895        + subject to reordering (many GOTOs in the original code)
8896        + so far opps is called for every (i,j) point, and then operates in
8897          the vertical; one may want to reorder the scheme in order operate in
8898          horizontal slabs at the cost of (a lot of) memory, at least ten new 3D
8899          fields)
8900    o overhaul of IO so that we now have flags for MDSIO and/or MNC
8901      - all verification tests compile and run with linux_ia32_g77
8902      - defaults are compatible with current input files--nothing
8903        should change if you were not previously using MNC
8904      - MNC output has been added in numerous places (eg. timeave)
8905        but there are still a few writes not yet do-able with MNC
8906        (this is in progress)
8907      - flags now allow for either/or/both use of MDSIO and MNC and
8908        documentation will soon follow
8909      - numerous small formatting cleanups for ProTeX
8910    o add version info (via BUILD_INFO.h) to MNC and stdout
8911    
8912    checkpoint54e_post (2004/09/02)
8913    o add two new packages
8914      - pp81 (Packanowski and Philander, 1981), Richardson number and
8915        stratification dependent mixing
8916      - my82 (Mellor and Yamada, 1982) level 2 turbulence closure scheme
8917      - these scheme operate in a similar manner as KPP (without ghat, of
8918        course), however there is only one diffusivity that is used for both
8919        temperature and salinity (and passive tracers)
8920    o add offline package
8921    o add "verification/dic_example" which contains a dic-gchem-ptracer setup
8922      provided by Stephanie Dutkiewicz
8923    o genmake2: add ability to search for C compilers and cleanup test output
8924      - fixes recent SX-6 problems and should help with others (eg. HP-UX)
8925    
8926    checkpoint54d_post (2004/07/27)
8927    o data.diagnostics: if levels() is unspecified then ALL levels are diagnosed
8928    o bug fix in pkg/cal/cal_addtime.F for TheCalendar='model' day count is wrong,
8929      leading to additional shift by 5 days each year of integration
8930       (i.e. leading to considerable offset over the years)
8931    o update global_ocean.cs32x15/thsice: use z* + RealFW + staggerTimeStep
8932    o start with no AB and no initial filtering (staggerTimeStep):
8933      change the results of test-exp: hs94.128x64x5, hs94.1x64x5 & hs94.cs-32x32x5
8934    o move ocean specific S/R calls from forward_step.F to do_oceanic_phys.F
8935      (external loading & cpl import/export stay in forward_step.F)
8936    o update coupling interface to work with new staggerTimeStep
8937    o change MDSIO ptracers_pickup.
8938    o fix a bug in Flux deriv. vs Ts (pkg/aim_v23/phy_suflux_sice.F);
8939    o genmake2 fixes so netcdf now works on halem ("osf1_alpha_*")
8940    o bugs fixed in kpp_calc.F (ustarY) and external_forcing.F (Qsw & Partial-cell)
8941    
8942    checkpoint54c_post (2004/07/18)
8943    o replace surfaceTendency U,V,S,T,Tice,Ptr by surfaceForcing U,V,S,T,Tice,Ptr
8944      this affects (truncation error) output.txt of test-exp:
8945       global_ocean_ebm,_pressure,.cs32x15(&.thsice), lab_sea & natl_box
8946    o pkg/kpp: replace pMask by maskC to reduce memory size (one 3.D array)
8947    o change Qnet to always be the net heat flux, (+upward).
8948      affects (truncation error) output of natl_box exp.: updated
8949    o define the max number of passive tracers in PTRACERS_SIZE.h
8950    o start to test mnc routinely in exp0
8951    o add sea-ice loading (sIceLoad) as a new forcing field.
8952    
8953    checkpoint54b_post (2004/07/08)
8954    o add testreport "-j JOBS" option for parallel builds (tested and pretty
8955       impressive on Altix and Opteron systems)
8956    o diagnostics can now write NetCDF files through the mnc package
8957    o staggerTimeStep & NLFS: update pkg aim_v23 & thsice; update aim.5l_cs output
8958    o staggerTimeStep & multi-Dim-Advec: Exch(U,V) added
8959    o staggerTimeStep & NLFS: rescale T & S surface tendencies.
8960      affects (truncation error) output of lab_sea & natl_box exp.: updated
8961    o change pickup _cd & _ptracers (old pickup restart: usePickupBeforeC54=.T.)
8962    
8963    checkpoint54a_post (2004/07/06)
8964    o re-write staggerTimeStep: step fwd U,V and then T,S (reverse the order).
8965    o change pickup file (to restart from old pickup, set usePickupBeforeC54=.T.)
8966    o get a perfect restart when using RealFreshWaterFlux + NLFS (not finished)
8967    o update output of all exp. that use staggerTimeStep (except hs94.cs & 2D)
8968      + internal_wave (shift in writing cg2d_ini_res)
8969    checkpoint54a_pre (2004/07/05)
8970    
8971    o require forcing_In_AB=.FALSE. and remove surfaceTendencyTice from pkg/seaice
8972      - modified verification/lab_sea and natl_box_adjoint accordingly
8973    
8974    checkpoint54 (2004/07/02)
8975    checkpoint53g_post (2004/07/02)
8976    o prepare splitting of thermodynamics: store convect.counter in common block
8977    o store d.etaH/dt (instead of Div.hV) in common ; affects (truncation error)
8978      output of: global_ocean.cs32x15, global_ocean_pressure & internal_wave
8979    o cnh's modifs to gad_advection.F for cube-sphere multi-dim advection
8980    o new parameter "nShapS": allow to treat differently S from T (nShapT)
8981    o separate Vert.Advec.Scheme from horizontal Advec.Scheme (T & S)
8982    o restore adjointability
8983    
8984    checkpoint53f_post (2004/06/25)
8985    o modifications that affect AIM experiment results (update output.txt):
8986      - no advection of S at top interface Nr (pkg/generic_advdiff)
8987      - air surf. temp: use lower value between T0 & T1 (phy_suflux_prep.F)
8988    o AIM pkg:
8989      - include stability function into surf.Flux derivative relative to Tsurf
8990      - calculate clear-sky radiation & surface temp. change (for diagnostics)
8991    
8992    checkpoint53e_post
8993    o merged cylindrical coord configuration
8994    o added rotating_tank experiment
8995    checkpoint53e_pre
8996    
8997    checkpoint53d_post (2004/06/14)
8998    o faulks upgraded: re-generate output.txt that have changed:
8999       global_ocean.cs32x15(.thsice), global_ocean_ebm, lab_sea, natl_box
9000    o Added Bryan and Lewis, 1979, vertical diffusivity profile
9001    o pkg/land: fix problem in land_impl_temp.F when Ts arround freezing.
9002    o added Sadourny discretization of Coriolis
9003      - moved some PARAMETERS from mom_*_coriolis.F to PARAMS.h
9004      - re-enabled use of omega3 (useAbsVorticity)
9005    o added Leith (Phys. Fluids, 1968, 10, 1409-1416) variable viscosity for
9006      vector-invariant equations
9007      - note: does *NOT* yet use same variable visc. for no-slip BC's.
9008    o recoded the lateral boundary conditions for non-hydrostatic w, this time
9009      hopefully without new bugs
9010      - still to do: biharmonic friction for non-hydrostatic w
9011    o bug fix for mom_*_sidedrag: rA -> rAs,rAw
9012    o regenerated output for global_ocean_ebm (using -ieee)
9013    o fix mom_common/mom_*_sidedrag.F to recover numeric output prior to creation
9014      of mom_common/
9015      - simple re-arrangement of instructions within computing loop
9016    checkpoint53d_pre (2004/05/21)
9017    
9018    checkpoint53c_post (2004/05/21)
9019    o new version of coupler for AIM+thSIce and Ocean models
9020     - new fields (SSS,h_MixLayer ...) are exchanged through the coupler
9021     - land: change Evaporation of snow
9022     - aim with thSIce: fix bug in snow-precip.
9023    o changes to calc_gw.F
9024     - bug fix for w^2 term near the bottom boundary
9025     - (hopefully) improve the lateral slip boundary condtions for use with
9026        partial/looped cells
9027      - because the bug fix changes two verification experiments anyway (exp5
9028        and plume on slope), change the lateral boundary condition from half slip
9029        to the value of no_slip_sides
9030    o ebm package wasnt quite up to the parallel task. Fixed that.
9031    o Adjoint of EBM package + verification
9032      * TLM OK
9033      * ADM not sufficient accuracy yet (needs further testing)
9034    
9035    checkpoint53b_post (2004/05/14)
9036    o Commiting new energy balance model to repository
9037      * package is pkg/ebm
9038      * verif. is verification/global_ocean_ebm
9039      * references are in ebm_driver.F
9040    C      * X. Wang, P. Stone and J. Marotzke, 1999:
9041    C        Global thermohaline circulation. Part I:
9042    C        Sensitivity to atmospheric moisture transport.
9043    C        J. Climate 12(1), 71-82
9044    C      * X. Wang, P. Stone and J. Marotzke, 1999:
9045    C        Global thermohaline circulation. Part II:
9046    C        Sensitivity with interactive transport.
9047    C        J. Climate 12(1), 83-91
9048    C      * M. Nakamura, P. Stone and J. Marotzke, 1994:
9049    C        Destabilization of the thermohaline circulation
9050    C        by atmospheric eddy transports.
9051    C        J. Climate 7(12), 1870-1882
9052    o Will need long integration testing.
9053    checkpoint53b_pre (2004/05/14)
9054    
9055    o created pkg/mom_common in preparation for variable viscosity code
9056    o renamed and split ini_mnc_io
9057    o pkg/land: only liquid water can diffuse or run-off
9058    o AIM using land: soil wetness availability account for snow
9059    o added printMapIncludesZeros to EEPARMS namelist
9060    
9061    checkpoint53a_post (2004/05/11)
9062    o restore TAMC compatiility for exf_constants.h
9063      (no usage of _d in .h)
9064    o Additional storing in KPP in an attempt to fix
9065      TAMC problem with adjoint of KPP code.
9066      (no success...)
9067      Identical code works fine with TAF.
9068    o Fixed verification/natl_box_adjoint experiments.
9069      Initial conditions for Experiments 4 and 5 are now
9070      set to "SEAICE_initialHEFF=0", which is more reasonable,
9071      and hence gives results closer to that of Experiment 2.
9072      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
9073    
9074    checkpoint53 (2004/05/06)
9075    o stable checkpoint with up to date adjoint
9076      TLM tests only run for 1st grdchk at the moment. Its unclear if
9077      this is a code problem or a problem with resetting code for g_
9078      variables that is being autogenerated wrong.
9079      Otherwise:
9080       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
9081       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
9082         are both still in chaos following their security messes.
9083    
9084    checkpoint52n_post (2004/05/06)
9085    o various build (mostly genmake2) changes including:
9086      - ability to build/run more easily within Cygwin and MacOS X
9087      - more complicated Makefiles with a stronger dependence on Gnu Make
9088    o pkg/seaice modifications
9089      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
9090        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
9091        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
9092      - changed proxy for geostrophic velocity and updated
9093        verification/lab_sea/results/* accordingly
9094      - removed ADI dynamic solver from pkg/seaice
9095      - replaced all occurrences of 1/CSTICE or 1/CSUICE
9096        they caused a segmentation fault under certain circumstances
9097      - removed unused field WATR
9098    o bug fix in exf-package:
9099      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
9100         now reflect that.
9101    o small fixes in the cal-package:
9102      - set reference date to first of January for the 'model'-calendar
9103      - failing of cal_CheckDate in cal_FullDate now actually results in a
9104        warning
9105    o small modifications in exf-package to increase flexibility:
9106      - change climtempfreeze from a constant to a runtime parameter that
9107        is specified in data.exf_clim (default = -1.9)
9108      - introduce runtime parameter windstressmax (default = 2.0) that is
9109        specified in data.exf
9110    o fix in pkg/thsice:
9111      - update Evap (Tsf changes) to be consistent with Latent heat flux
9112      - maintain snow precipitation unchanged (even if Tsf >=0).
9113     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
9114    
9115    checkpoint52m_post (2004/04/18)
9116    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
9117      this does not change any of the results, because myIter=0 in swfrac always
9118      lead to jwtype=2 (the default anyway), but the call makes little sense
9119      as a default
9120    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
9121    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
9122      atmospheric model (AIM) to use it ; add a "slab ocean" component.
9123    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
9124    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
9125    o extending useSingleCpuIO option to work with new exch2 I/O format
9126      - old-style, missing-tile I/O is still accessible by defining CPP
9127        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
9128    o monitor package can write to NetCDF files and/or STDOUT
9129    o fix re-definition bug in MNC_GRID_INIT_ALL()
9130    o doc/api_reference added
9131      - a framework for building an API Reference Manual using all
9132        the "protex" comments embedded in the code
9133      - see pkg/generic_advdiff, pkg/mnc for examples
9134    o MNC:
9135      - make myThid the last argument for all subroutines
9136      - new default for the grid files: NO halos
9137      - add useMNC and other run-time flags
9138      - separate per-file-group handling of the unlimited dimension
9139      - early initialization of MNC w/ flags read at the eeboot stage
9140        and lookup tables set in initialize_fixed
9141      - write all MNC output to a freshly-created directory
9142    o thermodynamics sea-ice (thsice) is now tested with testreport.
9143    o test exp. advect_cs: use the standard cs32 grid ; update output.
9144    o Added functionality to grdchk:
9145      pick global i,j,k position (or nearest wet) where to perform check.
9146    
9147    checkpoint52l_post (2004/03/11)
9148    o new land formulation:
9149      a) use ground enthalpy as prognostic variable to ensure exact
9150         energy conservation.
9151      b) account for water temperature and for latent heat of freezing
9152         in all processes (rain, run-off, ground storage)
9153      c) compute surface and ground temperature implicitly.
9154    o aim_v23 modification for new land model:
9155      a) Treat separately land / ocean / sea-ice surface fluxes
9156         to allow implicit computation of land & sea-ice surface temp.
9157      b) add snow precipitation.
9158    checkpoint52l_pre (2004/03/11)
9159    
9160    o fix problem (when 1 tile is empty) in min/max monitor.
9161    o fix bug in timeAve (u,vZetatave in common block)
9162    o no restoring terms under ice for pkg/seaice
9163    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
9164    o bug fix for pkg/seaice pickups
9165    o change MNC call locations and add coordinate attributes
9166    o mask vorticity at the corner ; affects global_ocean.cs output
9167    o fix ini_curvilinear_grid ; test CS experiments with mpi
9168    o aim.5l_cs: modify sea-ice fraction input file ; update output
9169    o exf: Adding simple range check routine for exf fields after read
9170    
9171    checkpoint52k_post (2004/02/23)
9172    o removed top-level directory "diags"
9173      - we migrated these functions to pkg/timeave a long time ago
9174    o fixed bug introduced in pkg/monitor
9175    o accuracy ctrlprec = 32 insuffient for gradient checks using
9176      averaged fields (I/O via cost_averages)
9177      -> use ctrl.h in active_file*.F to control I/O precision.
9178    o paramter list of CALL ADTHE_MAIN_LOOP
9179    o added initial do_the_model_io to ecco
9180    o set all ...Freq to zero after cost_final
9181      taveFreq, dumpFreq, pChkptFreq
9182    o MAIN and ECCO differentiability restored
9183    
9184    checkpoint52j_post (2004/02/18)
9185    o fix nchklev in tamc.h for global_ocean...
9186    o Bringing flow and store directives up-to-date
9187    o Really weird thing!
9188      call do_the_model_io from the_main_loop with parameters
9189      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
9190      TAF places a faulty re-call of initialise_varia
9191      after cost_final call which should not be there!
9192    checkpoint52j_pre (2004/02/03)
9193    
9194    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
9195      error messages
9196    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
9197    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
9198      debug output
9199    o modfied mdsio_writefield.F to handle non-global files under exch2
9200    o update AIM Cubed-Sphere exp (aim.5l_cs):
9201      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
9202    o update AIM Equatorial Channel exp:
9203      use standard aim_v23 pkg and change the SST fields to be more realistic.
9204    o globalFile now works with exch2
9205    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
9206      mon_vort3.F to make exch2 friendly with >1 tile per cube face
9207    o limit timeave output for hi-res integrations
9208    
9209    checkpoint52i_post (2004/01/21)
9210    o removed CPP_EEOPTIONS.h from verification/*/code
9211    o updated the tiling for global_ocean_pressure
9212    checkpoint52i_pre (2004/01/20)
9213    
9214    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
9215      the old pkg/aim).
9216    
9217    checkpoint52h_pre (2004/01/20)
9218    o shortened offending lines in exch2_send_rx?.template
9219    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
9220    o genmake2: add build & execute test for NetCDF code
9221    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
9222      old grid files, moved CPP_EEMACROS.h to pkg/exch2
9223    o added useSingleCPUIO flag to monitor.F and mon_out.F
9224    o added temporary hack for sea-ice dynamics on the cube:
9225      metric terms are ignored and it is assumed that
9226      there is no sea-ice on cube faces 1, 2, 4, and 5.
9227    
9228    checkpoint52f_post (2004/01/09)
9229    o added exch2 cube routines to pkg/exch2
9230    o modified hs94.cs-32x32x5 to use it
9231    o added new grid files to hs94.cs-32x32x5
9232    checkpoint52f_pre (2004/01/07)
9233    
9234    checkpoint52e_post (2004/01/07)
9235    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
9236      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
9237    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
9238      to work with implicit vertical advection and AB ;
9239    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
9240    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
9241     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
9242    checkpoint52e_pre (2004/01/02)
9243    
9244    o fix bug in impldiff when Nr=1 or Nr=2.
9245    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
9246    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
9247    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
9248      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
9249    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
9250    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
9251    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
9252    
9253    checkpoint52d_post (2003/12/16)
9254    o re-tiled many expts to allow comparison in multi-processor mode
9255      - updated output accordingly
9256      - changed hs94.128x64x5 to use intial T from file rather than use the
9257        random number generator
9258    o add infrastructure in model routines for fizhi and gridalt packages
9259    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
9260    o changes to permit hi-res, cubed-sphere, configuration
9261      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
9262      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
9263      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
9264        of surface winds for the cube
9265      (A verification experiment, based on global_ocean.cs32x15, but with
9266       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
9267       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
9268       complete with example surface forcing files and matlab scripts to look
9269       at the output and compare it with that of global_ocean.cs32x15.)
9270    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
9271       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
9272       to conform to the common rule.
9273    o check-in the first version of the coupler + interfaces for multi-components
9274       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
9275       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
9276       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
9277       - ocean and atmos. share the same horizontal grid (no interpolation).
9278       - exchanges between component and coupler is done in forward_step
9279    o new verification experiment, cpl_aim+ocn:
9280       coupled ocean - AIM atmosphere on cs32 grid.
9281    
9282    checkpoint52d_pre (2003/12/06)
9283    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
9284    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
9285    
9286    checkpoint52c_post (2003/11/25)
9287    o Fixing OPTIONS files for use of exf:
9288      - ALLOW_ECCO not needed
9289      - ECCO_CPPOPTIONS.h should not be included from
9290        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
9291        as has been the case in the past
9292      - All cal/exf related options are currently set in
9293        single header file. Should remain so until we
9294        agree on a consistent new policy.
9295    o Removed all CPP options for cal package.
9296      cal has no more CPP options.
9297    o modified STOREs in GAD_ADVECTION
9298    o corrected key comp. for passkey
9299    
9300    checkpoint52b_post (2003/11/23)
9301    o new version: "thsice" of thermodynamic sea-ice pkg:
9302     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
9303     - modify fluxes but do not change theta directly;
9304     - light cleaning of bulk_force pkg (still needed with thsice).
9305     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
9306       + output_thsice.txt to test thsice & bulk_force pkgs.
9307    o put back grid & coriolis monitor output.
9308    checkpoint52b_pre (2003/11/23)
9309    
9310    o call "do_the_model_io" at the beginning (=> dump initial state)
9311    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
9312    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
9313      (need info on NUMBER_OF_PTRACERS)
9314    o missing PTRACERS headers in some routines
9315    o default tamc.h in pkg/autodiff supposed to crash
9316      to ensure proper customization
9317    
9318    checkpoint52a_post (2003/11/17)
9319    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
9320      - moved surfaceTendencyTice from pkg/seaice to main code
9321      - subroutine FREEZE_SURFACE now limits only surface temperature
9322        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
9323        => new output.txt for global_ocean.cs32x15 & global_with_exf
9324      - keep the old version of FREEZE for backward compatibility;
9325        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
9326      - corresponding modifs for TAF directives
9327    o added surface flux output variables to TIMEAVE_STATVARS
9328    o time-averaged output for pkg/ptracers
9329    o fix problem with ECCO-related divided adjoint
9330      snapshot file was missing some ad-variables,
9331      but no warning issued by TAF
9332    
9333    checkpoint52a_pre (2003/11/12)
9334    o some bug fixes for #undef REAL4_IS_SLOW
9335    
9336    checkpoint52 = ecco_c52_e35
9337    o after testing adjoints of checkpoint51u_post
9338    
9339    checkpoint51u_post (2003/11/06)
9340    o this is the post-merge tag of the ecco-branch
9341      (needs another clean checkout and re-testing)
9342    o various natl_box_adjoint configs and results
9343      but no input fields
9344    o obcs adjoint not yet merged!
9345    o adding ECCO global 1x1 and 2x2 degree configs
9346    o updated/extended some store directives for seaice
9347    o pkg/ecco now containes ecco-specific part of cost function
9348    o top level routines the_main_loop, forward_step
9349      supersede those in model/src/
9350      previous input data.cost now in data.ecco
9351      (new namelist ecco_cost_nml)
9352    o in ctrl/ cleaned some cross-dependencies and updated CPP options
9353    
9354    checkpoint51t_post (2003/11/04)
9355    o this is the pre-merge tag of the ecco-branch
9356    
9357    checkpoint51s_post (2003/11/04)
9358    o cleanup: removed various obsolete #define-s
9359    o pkg/grdchk
9360      - renamed 'ph-grd 3' to 'grad-res'
9361      - merged from ecco-branch
9362        (remaining bug fixes for obcs gradient checks)
9363      - additional high-precision output for testreport
9364        (grep for 'precision_grdchk_result')
9365    
9366    checkpoint51r_post (2003/11/03)
9367    o cleaned up or removed CPP_OPTIONS.h files
9368    o updated results for some of the tests to reflect the new
9369      optfiles (-ieee: -O0 instead of -O3)
9370    
9371    checkpoint51q_post (2003/10/30)
9372    o cd_code:
9373      - moved cd_scheme.F -> cd_code_scheme.F
9374      - separate read_checkpoint from cd_code_ini_vars.F
9375      - separated cd_code part from write_checkpoint
9376      - updated AD_SOURCE, generated .flow
9377      - added CD_CODE_VARS.h to the_main_loop
9378      - Moving cd_code specific store dir.s to pkg/cd_code
9379    o ctrl package totally restructured
9380      - pack/unpack now optional and decoupled from
9381        xx_/adxx_ I/O
9382      - ctrl_pack/unpack cleaned
9383        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
9384      - confined inclusion of AD_CONFIG.h to where necessary.
9385    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
9386    
9387    checkpoint51p_post (2003/10/30)
9388    o create initial cd_code package
9389      - WARNING: the initialization of fields within packages
9390        is broken because INI_FIELDS (where READ_CHECKPOINT is
9391        called) is called *before* PACKAGES_INIT_VARIABLES.
9392        This seems to be backwards since
9393        1) its important to initially zero the entire field including
9394           the "halo" region
9395        2) zeroing needs to be done *before* reading pickup info
9396           and the pickup call might or might not happen in any
9397           particular run
9398      - this needs an overhaul for R2
9399    o cleanup verification/*/code/GMREDI_OPTIONS.h
9400    o cleanup testreport
9401    
9402    checkpoint51o_post (2003/10/27)
9403    o bringing AD-related verif's up to date with genmake2
9404      - carbon/
9405      - global_ocean.90x40x15/
9406      - hs.94.1x64x5/
9407      - (front_relax/ )
9408    o (more) consistent directory structure for AD-related verif.'s
9409    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
9410    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
9411    o bug fix in find_alpha.F for MDJWF:
9412      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
9413        change rho -> rho-rhoConst
9414      - replace call find_rho to find_rhonum
9415    o initialisation of rFlx extended to full array (required by TAF)
9416      and shifted to thermodynamics
9417    o removed PTRACERS.h in ptracers routine
9418    o added surfacetendencyPtr to S/R parameter list pracers_forcing
9419    o Correcting initialisations for fVerU, fVerV.
9420    o helping TAF to recognize dependency on kUp for
9421      fVerU, fVerV
9422    o Replacing delZ by delR in pkg/ctrl/
9423    checkpoint51o_pre (2003/10/24)
9424    
9425    o undid all of cp51 pending some cleanups and discussion
9426    o added the [#include "AD_CONFIG.h"] statement to all files that need
9427       it for adjoint/tl #defines
9428     o re-worked the build logic in genmake2 to support AD_CONFIG.h
9429     o removed tools/genmake since it no longer works
9430    
9431    checkpoint51n_post (2003/10/23)
9432    o modifications to make FREEZE flux visible to pkg/kpp
9433      - moved surfaceTendencyTice from pkg/seaice to main code
9434      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
9435      - subroutine FREEZE now limits only surface temperature
9436        (this means new output.txt for global_ocean.90x40x15,
9437         global_ocean.cs32x15, and global_with_exf)
9438    o added surface flux output variables to TIMEAVE_STATVARS
9439    
9440    checkpoint51n_pre (2003/10/23)
9441    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
9442    o added [#include "AD_CONFIG.h"] to all files that use the following
9443      defines:
9444      - ALLOW_ADJOINT_RUN
9445      - ALLOW_TANGENTLINEAR_RUN
9446      - ALLOW_ECCO_OPTIMIZATION
9447    
9448    checkpoint51m_post (2003/10/21)
9449    o incorporating changes to get TAMC/TAF working in genmake2
9450      - added new TAMC/TAF targets to the Makefile
9451      - various cleanups related to package handling
9452      - these changes should have no impact on the forward model
9453    
9454    checkpoint51l_post (2003/10/20)
9455    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
9456     - faster algorithm for cal_addtime.F
9457     - higher precision arithmetic, where needed
9458     - pkg/exf *startdate variables changed from calendar date to
9459       model integration time
9460    
9461    checkpoint51l_pre (2003/10/17)
9462    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
9463    o enable to apply restoring on S & T only in a latitude band.
9464    o update output (external_forcing_surf modif. change truncation errors)
9465       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
9466    
9467    checkpoint51k_post (2003/10/16)
9468    o change default to: useNHMTerms=.FALSE.
9469     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
9470       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
9471     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
9472        exp1, ideal_2D_oce
9473     - change data file of oceanic exp (leave the results unchanged for now)
9474       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
9475    o set gravitySign automatically according to the vertical coordinate used
9476      (and change sign: back to "logical" value: +1 when R increases downward)
9477    o added an include barrier to the default CPP_OPTIONS.h and
9478      removed the #include "PACKAGES_CONFIG.h" from it
9479    o fix a bug in mom_fluxform (from chk51j_post)
9480    
9481    checkpoint51j_post (2003/10/10)
9482    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
9483    o adjusted some flow directives (dynamics, thermodynamics)
9484    o added cubed-sphere case to test cost function
9485    o heckpoint_lev?_directives.h now include
9486      pkg-specific directives, whenever those are enabled.
9487    o Moving pkg-specific flow directives to corresponding pkg
9488      Moving pkg-specific differentiation list to corresponding pkg
9489      Moving pkg-specific checkpoint-lev storing to corresponding pkg
9490      ---> conventions are
9491           - pkg_ad.flow
9492           - pkg_ad_diff.list
9493           - pkg_ad_check_lev?_dir.h
9494    
9495    checkpoint51i_post (2003/10/09)
9496    o merge of the branch-genmake2
9497      - knowingly breaks the older genmake
9498      - automatic generation of all ALLOW_${PKG_NAME} defines
9499      - new testreport supersedes older testscript
9500    o large number of package inclusion and header cleanups
9501    checkpoint51i_pre (2003/10/08)
9502    
9503    o new output for adjoin of global ocean vector invariant
9504    o fix for checkpoint of thermodynamic seaice and bulk_force
9505    o Steph gchem various cleanups
9506    
9507    checkpoint 51h_pre
9508    o fixed some single quotes
9509    o modify gchem pkg to be more versatile
9510    o modifications to clean up dic pkg
9511    o add pkg/cfc
9512    
9513    checkpoint51g_post (2003/10/02)
9514    o provide links for ARPACK and ADM*TLM
9515    o start removing verification/vero/
9516    o update AD-related stuff
9517      (in particular some IF-statements in model/src/ routines)
9518    o adding to verification/global_ocean.90x40x15/ adjoint of
9519      vector invariant setup
9520    
9521    checkpoint51f_post (2003/10/02)
9522    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
9523    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
9524      of tracer Green's fucntions for ocean inversion project.
9525    
9526    checkpoint51f_pre (2003/08/07)
9527    o Added on-the-fly spatial interpolation capability
9528        "USE_EXF_INTERPOLATION" to pkg/exf.
9529      - This is a temporary Cartesian-grid hack until
9530        the super-duper ESMF coupler becomes available.
9531      - See verification/global_with_exf/README for usage example.
9532      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
9533        flags and modified pkg/seaice accordingly.
9534    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
9535        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
9536        non-local transport term.
9537    
9538    checkpoint51e_post (2003/08/03)
9539    o pkg/mom_vecinv:
9540      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
9541      - add time-ave diagnostic of vorticity advection.
9542    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
9543    o atmospheric geopotential: - include water vapor effect;
9544                                - use p^kappa in p* scaling.
9545    o land pkg: read initial state from files.
9546    o AIM : add stratospheric drag in the upper level
9547    
9548    checkpoint51d_post (2003/07/18)
9549    o change function ILNBLNK (=> last non-blank char.) to return zero
9550      (instead of the string length) when the string. char is empty
9551    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
9552    o modif's to restore TAMC compatibility
9553      - avoid "_d" constructs in PARAMETER declarations
9554      - avoid interrupting lines by comment lines
9555    o Use cluster local disks for purely local I/O
9556      vs. globally visible disks needed for ctrl stuff
9557      (merged from ecco-branch)
9558      - new active_file_loc... and mdsio_..._loc routines
9559      - affected packages: autodiff, ctrl, grdchk, mdsio
9560    
9561    checkpoint51c_post (2003/07/08)
9562    o introducing integer flag debugLevel
9563      - debLevZero: suppress all output
9564      - debLevA: standard
9565      - debLevB: equivalent to current debugMode=.TRUE.
9566    o introducing pathname variable mdsioLocalDir for mdsio
9567      that can be specified at runtime
9568      (relevant for cluster I/O to local disk)
9569    `
9570    >>>checkpoint51b_post
9571    adjoint of ptracers
9572    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
9573    o extended state in checkpoint_lev?, etc.
9574    o alternative ctrl/cost with tr1 or ptracer
9575    o new comlev1_bibj_ptracers
9576    o new ptracers.flow
9577    o made ptracers_forcing same as external_forcing_s
9578    o added verification for adjoint with ptracers
9579      - adm. grdchk fail so far
9580      - tlm. grdchk OK
9581      - checked tapelev/comlev recomputations: OK
9582    <<<checkpoint51b_pre
9583    
9584    checkpoint51a_post (2003/06/25)
9585    o added code for biogeochemistry package
9586      - new pkgs: dic, gchem
9587      - new subroutine in ptracers
9588    o modify code for biogeo packages
9589      - in model/src and pkg/ptracers
9590    
9591    checkpoint51 (2003/06/24)
9592    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
9593      - autodiff, ctrl, exf, grdchk, seaice
9594      kept separate packages
9595      - cost, ecco, obcs
9596    o updating verification/internal_wave, verification/lab_sea
9597      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
9598    
9599    checkpoint50i_post (2003/06/23)
9600    o Preparing next differentiable checkpoint and sync
9601      of MAIN vs. ecco-branch
9602      - 1st step: this one is differentiable
9603      - 2nd step: next(! not this) checkpoint will have updated packages
9604                  from ecco-branch)
9605    
9606    checkpoint50h_post (2003/06/20)
9607    o new package "land": provide surface BC for AIM.
9608    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
9609    o AIM: use true log-P extrapolation for near surface temp (= as in
9610        F.Molteni paper) ; update aim.5l_cs output.
9611    o New variable in PARM03 for more flexible pickups
9612    o somewhat cleaned package initialisation sequence for
9613      ctrl/ cost/ ecco/ in packages_... routines
9614    
9615    checkpoint50g_post (2003/05/23)
9616    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
9617      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
9618      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
9619        made the default because of faster convergence than ADI
9620    
9621    checkpoint50f_post (2003/05/23)
9622    o exf totally restructured
9623      - replaced all exf_set_ routines by one generic exf_set_gen.F
9624        and made sure it's still differentiable
9625      - split exf_getffields.F into new exf_bulkformulae.F
9626      - exf_inscal_/exf_outscal_ suffixes consistent with field names
9627      - updated adjoint/makefile and relevant verif. accordingly
9628    
9629    checkpoint50f_pre (2003/05/23)
9630     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
9631          + change Evap over land. (update aim.5l_cs output)
9632     o added missing .cvsignores and made uniform across expts
9633     o changed configuration of tidal_basin_2d expt
9634     o added pkg/debug functions for tracing code in fatal crashes
9635     o tidied pkg/monitor to use MONITOR_OPTIONS.h
9636     o new fn in pkg/monitor to stop model if solution grows too big
9637     o removed lots of single quotes from comments
9638    
9639    checkpoint50e_post (2003/05/14)
9640    o make KPP work with PTRACERS
9641     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
9642       nearly a copy of kpp_transport_s
9643     - there is no analogue to SurfaceTendencyS, so I have to use
9644       gPtr(of the surface layer) instead
9645    o add a new platform SunFire+mpi (SunFire 15000) to genmake
9646    checkpoint50e_pre (2003/05/13)
9647    
9648    checkpoint50d_post (2003/05/13)
9649    o change kpp output from multiple-record state files to single-record state
9650      files analogous to write_state.F
9651    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
9652      analogous to the cg2d-related output.
9653    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
9654      so that writing to internal file fn (with length 512) fails.
9655    checkpoint50d_pre (2003/05/12)
9656    
9657    checkpoint50c_post (2003/05/12)
9658    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
9659    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
9660    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
9661    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
9662    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
9663    
9664    checkpoint50c_pre (2003/04/30)
9665    Merging from release1_p13:
9666    o bug fix for pkg/seaice dynamic solver
9667    o Added SEAICE_initialHEFF to pkg/seaice
9668    
9669    checkpoint50b_post (2003/04/17)
9670    o store u*,v* in gU,V instead of in guNm1,gvNm1
9671    o in order to put the momForcing out of the Adams-Bashforth:
9672      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
9673      to timestep.F
9674    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
9675    o re-generate output for highly sensitive test-exp:
9676       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
9677    
9678    checkpoint50b_pre (2003/04/17)
9679    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
9680    o corrected CPP option mismatch in exf_Bulk... functions for case
9681      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
9682    
9683    checkpoint50a_post (2003/03/21)
9684    o Bug fix for merging between c50 and KPP.
9685      ikey was passed from thermodynamics to kpp_calc via
9686      common block rather than being recomputed in kpp_calc,
9687      in contradiction with new key itdkey.
9688      New key ikppkey created, and tamc.h headers updated.
9689    
9690    checkpoint50 (2003/03/08)
9691    - 2nd step of merge with ecco-branch:
9692      merge changes in ecco-branch back into main trunk
9693    - bug fix in find_alpha
9694    - more storing in gmredi_calc_tensor.F, kpp_routines.F
9695    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
9696    - merged some sliced AD support routines
9697    
9698    checkpoint49 (2003/03/06)
9699    merged from ecco-branch:
9700    o exf:
9701      - Enable initialisation of forcing fields to constant
9702        (runtime) values.
9703      - in exf_getffields.F
9704        Reduce i-/j-loop to interior domain, discarding overlaps.
9705        That also fixes wrong TAF-key computations for key_1, key_2
9706        with bulf formulae.
9707      - exf_init.F modify #ifdef for exf_init_evap
9708      - exf_getffieldrec.F, ctrl_getrec.F
9709        The following INT-usages are not safe:
9710          fldsecs  = int(fldsecs/fldperiod)*fldperiod
9711          fldcount = int(fldsecs/fldperiod) + 1
9712        and were modified.
9713    o autodiff: checkpoint_lev...
9714      - updated storing for bulk formulae (some arrays were missing)
9715      - added state for seaice package
9716      - synchronized with main branch
9717    o DIVA:
9718      Modif.s in
9719      - the_main_loop.F
9720      - the_model_main.F
9721      and added cost_final_restore.F cost_final_store.F
9722      o With these changes, it is possible to fully separate
9723        the first forward run to compute the cost function (mdthe_main_loop)
9724        and adjoint runs over individual DIVA intervals (adthe_main_loop)
9725        into separate model executions.
9726        This enables better tuning of DIVA to given queue sizes.
9727      o Loss of cost function value in consecutive DIVA runs is
9728        fixed by storing to 'costfinal' file.
9729      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
9730        beginning/end of adjoint integration is accounted for.
9731      The current changes apply to TAF-1.4.26.
9732      TAF has one remaining bug, requiring one manual change
9733      (see MITgcm manual).
9734    o cal: synchronized between MAIN and ecco-branch
9735    
9736    checkpoint48i_post (2003/03/05)
9737    o Changes to restore differentiability of code w.r.t. previous tag
9738      (mostly adding new routines to make list and replacing
9739      pressure by totPhiHyd).
9740    o Updated and merged grdchk package
9741      - has both ADM and TLM checks
9742      - works for single- and multi-proc.
9743      - output cleaned
9744      - worked successfully for parallel DIVA
9745    o genmake:
9746      - Adding -platform=SP4
9747      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
9748    o Modif. for DIVA:
9749      ctrl_unpack should not be called in intermediate DIVA interval.
9750      (similar thing would apply for active files such as
9751      tbar, sbar, psbar, which should not be reinitialised;
9752      only relevant for ecco-branch)
9753    
9754    checkpoint48h_post (2003/02/28)
9755    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
9756    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
9757    o Added SEAICE_initialHEFF to pkg/seaice
9758    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
9759    
9760    checkpoint48g_post (2003/02/18)
9761    --- EOS:
9762    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
9763      store total Potential in totPhyHyd for diagnostics & EOS.
9764    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
9765    --- Pressure/geopotential gradient:
9766    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
9767    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
9768      ( changes results of global_ocean_pressure )
9769    o NLFS + z-coord.: add eta*Rho' contribution.
9770    o accurate phiHyd when using interface-W at the middle between 2 centers
9771     ( changes results of ideal_2D_oce )
9772    o includes r* 2nd term in potential gradient.
9773    
9774    checkpoint48f_post (2003/02/18)
9775    Merging from release1_p12:
9776    o Modifications for using pkg/exf with pkg/seaice
9777      - improved description of the various forcing configurations
9778      - added basic radiation bulk formulae to pkg/exf
9779      - units/sign fix for evap computation in exf_getffields.F
9780      - updated verification/global_with_exf/results/output.txt
9781    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
9782      (SBO) core products, including oceanic mass, center-of-mass,
9783      angular, and bottom pressure (see pkg/sbo/README.sbo).
9784    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
9785      to avoid negative values in shallow regions.
9786      - updated verification/natl_box/results/output.txt
9787      - updated verification/lab_sea/results/output.txt
9788    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
9789    o Added useSingleCpuIO option (see PARAMS.h).
9790    o Updated useSingleCpuIO option in mdsio_writefield.F to
9791      work with multi-field files, e.g., for single-file pickup.
9792    o pkg/seaice:
9793      - bug fix in growth.F: QNET for no shortwave case
9794      - added HeffFile for specifying initial sea-ice thickness
9795      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
9796    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
9797      kpp_transport_t.F, forward_step.F, and the_main_loop.F
9798    o pkg/seaice:
9799      - adjoint-friendly modifications
9800      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
9801    
9802    checkpoint48e_post (2003/02/12)
9803    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
9804    o dynamics: change definition of computational domain & adapt mom_fluxform
9805      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
9806    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
9807        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
9808        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
9809        global_ocean.90x40x15 global_with_exf global_ocean_pressure
9810        inverted_barometer solid-body.cs-32x32x1
9811      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
9812    
9813    checkpoint48d_post (2003/02/09)
9814    o in preparation for r*:
9815     a) use pre-computed gradient of hydrostatic potential:
9816        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
9817     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
9818        => affects results of glob_oce_pressure (different truncation error)  
9819      update output.txt of ideal_2D_oce & global_ocean_pressure
9820    
9821    checkpoint48d_pre (2003/02/08)
9822    o in preparation for r*:
9823      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
9824      pass the 2 comp. of the grad. as arguments to momentum S/R.
9825      but for the moment, only used if it does not change the results.
9826    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
9827    
9828    checkpoint48c_post (2003/02/06)
9829    Modifications in treatment of initial flux forcing controls
9830    to avoid extra storing of flux fields.
9831    
9832    checkpoint48c_pre (2003/01/21)
9833    o Added tidal_basin_2d experiment (currently 1D!)
9834    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
9835    
9836    checkpoint48b_post (2003/01/27)
9837    o r* coordinate added in #ifdef NONLIN_FRSURF block.
9838     (modification to pressure gradient not yet implemented)
9839    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
9840      (for U & V) that are used for vertical advection of momentum.
9841    
9842    checkpoint48a_post (2003/01/24)
9843    o In preparation for r*, use temp. array to compute vertical transport
9844       in flux-form momentum pkg. => change results of few test-exp.
9845      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
9846                        lab_sea, natl_box & plume_on_slope
9847    
9848    checkpoint48 (2003/01/23)
9849    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
9850    
9851    checkpoint47j_post (2003/01/21)
9852    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
9853    o moved adexch from forward_step to addummy_in_stepping
9854    o added exch in ctrl_map_...
9855    o aveFreq.=0. at end of cost_final to avoid overwrite in
9856      reverse checkpointing loop
9857    o Yet more changes in gmredi:
9858      * adgmredi_calc_tensor
9859        avoiding all recomputation of gmredi_slope_limit
9860      * adgmredi_x/y/rtransport
9861        added flag for excessive storing to avoid recomp. of
9862        u/v/rtans, dTdx/y/z
9863        -> this is not really necessary and very memory-consuming
9864      * adgmredi_slope_psi:
9865        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
9866      * gmredi_slope_limit
9867        re-activated full calculation of taperfct for case 'ac02'
9868    o updating verification/ adjoints of carbon, global_ocean.90x40x15
9869    
9870    checkpoint47i_post (2003/01/13)
9871    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
9872    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
9873      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
9874    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
9875    o gmredi: fix few bugs.
9876    
9877    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
9878    This will be a good checkpoint to plug into the ecco-branch.
9879    o few modif.'s to get latest version adjointed
9880      (mainly kick out code in ini_linear_phisurf)
9881    o modif's to run adjoint with exactConserv
9882    o case GM_BOLUS_ADVEC should be cleaned
9883      S/R gmredi_slope_psi should be cleaned
9884    o verification/carbon now has exactConserv=.TRUE.
9885    
9886    checkpoint47g_post (2003/01/10)
9887    o time-average AIM output: becomes independent from statvars time-average
9888      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
9889    o After TAF bug fix:
9890      Tested adjoint of gmredi package.
9891      Tests were done with checkpoint47 rather than with latest
9892      checkpoint47f_post since the latter is broken for the adjoint
9893      verification/carbon/ contains both ADM and TLM gradient checks.
9894    Here they are, before they get changed/lost/stolen.
9895    Mostly modif.'s to fix numerical sensitivities.
9896    Gradient checks OK for
9897    - GM_taper_scheme:
9898      * clipping
9899      * ac02
9900      * linear
9901      * glw91
9902      * dm95
9903      * ldd97
9904    - GMREDI_OPTIONS:
9905      * GM_VISBECK_VARIABLE_K
9906      * GM_NON_UNITY_DIAGONAL
9907      * GM_EXTRA_DIAGONAL
9908      * GM_BOLUS_ADVEC
9909    in conjunction with data.gmredi parameters to be checked in
9910    in a few minutes under verification/carbon/code/
9911    
9912    checkpoint47f_post (2002/12/28)
9913    Merging from release1_p10:
9914    o modifications for using pkg/exf with pkg/seaice
9915      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
9916        and SEAICE_EXTERNAL_FLUXES
9917      - pkg/exf CPP options EXF_READ_EVAP and
9918        EXF_NO_BULK_COMPUTATIONS
9919      - usage examples are Experiments 8 and 9 in
9920        verification/lab_sea/README
9921      - verification/lab_sea default experiment now uses
9922        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
9923    
9924    checkpoint47e_post (2002/12/27)
9925    o created a tag prior to creating a branch
9926    
9927    checkpoint47d_post (2002/12/16)
9928    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
9929      at the bottom boundary had an erroneous half slip boundary condition
9930    o added bottom drag and no slip boundary condition capabilities to
9931      oceanic pressure coordinates code
9932    o added new verification experiment global_ocean_pressure, this experiment is
9933      also described in the tutorial section of the manual
9934    checkpoint47d_pre (2002/12/16)
9935    
9936    checkpoint47c_post (2002/12/16)
9937    o Added a verification experiment for a global cubed-sphere ocean run
9938      -  verification/global_ocean.cubed32x32x30
9939      -  uses pkg/therm_seaice and pkg/bulk_forcing
9940    
9941    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
9942    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
9943      when using P-coordinate; only implemented for atmospheric config.
9944    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
9945      NOTES: requires option NONLIN_FRSURF to be "#define".
9946    o update advect_xz/results/output.txt (left from checkpoint44g_post)
9947    
9948    checkpoint47b_post (2002/12/05)
9949    Merging from release1_p9:
9950    o pkg/seaice
9951      - removed GOTO's and added taf directives
9952      - double precision constants to reduce the g77 (Linux)
9953        to F77 (SGI) differences reported in release1_p8
9954    o tools/genmake
9955      - added SGI options
9956    o verification/testscript
9957      - updated to that of checkpoint47a_post
9958    o verification/global_ocean.90x40x15/input/eedata
9959      - modified for SGI f77 compatibility
9960    o verification/lab_sea
9961      - added description of sea-ice model
9962      - added missing matlab routines
9963      - added test of thermodynamics parallelization
9964    
9965    checkpoint47a_post (2002/11/23)
9966    o new pkg: aim_v23
9967     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
9968       for now, keep the same surface forcing as before.
9969     - Part-Cell implemented into AIM; check that Heat & Water are conserved
9970     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
9971     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
9972    o add diagnostic of surface correction term in monitor output
9973    
9974    o bulk_force and therm_seaice
9975    - Two packages:  bulk_force (Bulk forcing)
9976      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
9977    - Earlier integration from Stephaine Dutkiewicz
9978      and Patrick Heimbach.
9979    - Two ifdef statements for compile time,
9980       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
9981    
9982    checkpoint47 (2002/11/15)
9983    differentiable version of checkpoint46n_post
9984    o bug fix in quasihydrostaticterms
9985    o * "clean" adjoint code (in terms of extensive recomputations)
9986        can now be obtained for all GMREDI options (i.e. for
9987        - GM_VISBECK_VARIABLE_K
9988        - GM_NON_UNITY_DIAGONAL
9989        - GM_EXTRA_DIAGONAL
9990        - GM_BOLUS_ADVEC )
9991      * However, wrong gradient check problem remains unsolved.
9992      * New CPP options have been introduced for different
9993        tapering schemes
9994    o external_fields_load now part of differentiation list
9995    o pressure needs multiple storing;
9996      would be nice to have store_pressure at beginning or
9997      end of forward_step, e.g. by having phiHyd global (5-dim.)
9998      (NB: pressure is needed for certain cases in find_rho,
9999      which is also invoked through convective_adjustment).
10000    o recomputations in find_rho for cases
10001     'JMD95'/'UNESCO' or 'MDJWF' are OK.
10002    o #define ATMOSPHERIC_LOADING should be differentiable
10003    o ini_forcing shifted to begining of initialise_varia
10004    o Incorporating QNVS line search routines into MITgcm
10005      (this is separate code, and therefore not under pkg)
10006      lsopt/, optim/
10007    o Updated verification/carbon/
10008      - #define GM_VISBECK_VARIABLE_K
10009      - GM_taper_scheme    = 'ldd97'    
10010    
10011    checkpoint46n_post (2002/11/12)
10012    Merging from release1_p8:
10013    o verification/natl_box:
10014      updating new external_fields_load routine
10015    o New package: pkg/seaice
10016      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
10017      The sea-ice code is based on Hibler (1979-1980).
10018      Two sea-ice dynamic solvers, ADI and LSR, are included.
10019      In addition to computing prognostic sea-ice variables and diagnosing
10020      the forcing/external data fields that drive the ocean model,
10021      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
10022      The implied surface heat flux is then stored in variable
10023      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
10024      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
10025      non-local transport term.  Because this call precedes model
10026      thermodynamics, temperature under sea-ice may not be "exactly" at
10027      the freezing point by the time theta is dumped or time-averaged.
10028      N.B.: fairly large differences in accuracy occur across
10029            different platforms/compilers; comparison between
10030            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
10031            generated output gives:
10032       T           S           U           V
10033      C D M    c        m  s        m  s        m  s        m  s
10034      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
10035      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
10036      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
10037    
10038      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
10039    o GAD:
10040      - generated new common blocks to account for call of
10041        same gad routines with differing traceridentities
10042        (needed to modify tracerIdentity indices in GAD.h)
10043      - generated separate common blocks for case useCubedSphereExchange
10044        (Department of Futurology)
10045      - parameter lists to gmredi_?transport: added tracerIdentity
10046      - added new key indices to tamc.h
10047    o external_fields_load:
10048      - added this routine to TAF list
10049      - needed to make some common blocks global and additional storing
10050        along the same lines as exf package (checkpoint_lev?_directives.h)
10051    o exf:
10052      updated external forcing package
10053      - bug fixes carried over from ecco-branch
10054        (missing OBCS_OPTIONS.h in two routines)
10055      - enable easy to use "no forcing".
10056      - added exf I/O for atmospheric loading
10057      - added exf I/O for runoff data
10058      - transfered scaling between exf <-> MITgcm to exf namelist
10059    o Adding new verification experiment global_with_exf.
10060      This verification experiment is almost identical to the
10061      global_ocean.90x40x15 experiment, except that it uses
10062      the exf (and cal) package instead of the
10063      external_fields_load routine (cf README file).
10064    
10065    checkpoint46m_post (2002/11/07)
10066    o modified testscript to return -- when there are no lines of "%MON" output
10067    o added new flag "quasiHydrostatic" for QH mode
10068      and new routine quasihydrostaticterms()
10069    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
10070      New routine: mom_u_coriolis_nh()
10071    o fixed sign of non-hydrostatic metric terms in u and v equations.
10072      Depend on correct sign of gravitySign.
10073    o added work.pc* to .cvsignore in aim directories using ifc
10074    o introduced flag for controllin non-hydrostatic metric terms
10075    o removed gravitySign from PARM04
10076    o switched to g77/ifc from pgf77 in aim experiments
10077    
10078    checkpoint46l_post (2002/11/01)
10079    o made convective adjustment work with pressure coordinates:
10080     - changed the direction of k-loop in convective_adjustment.F for the
10081       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
10082     - adjusted the reference pressure k-index in convective_adjustment.F
10083     - adjusted the convection condition in convect.F (in analogy to
10084       calc_ivdc.F)
10085     - convective_adjustment no longer computes anything on the halos
10086     - removed the warnings about negative salinity from find_rho.F and
10087       find_alpha.F; instead the new routine look_for_neg_salinity, called
10088       at the beginning of find_rho, find_alpha, and find_beta, does a
10089       check of the entire slice, if CPP-option
10090       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
10091    checkpoint46l_pre (2002/10/23)
10092    
10093    checkpoint46k_post (2002/10/23)
10094    o fixed the verification/global_ocean.90x40x15 experiment:
10095     - new bathymetry (the world according to A., JMC, and M.)
10096     - new initial fields and forcing fields (*.bin files)
10097     - new POLY3.COEFFS (for the next release one should switch to a full
10098       equation of state: JMD95P or MDJWF)
10099     - fixed several errors and redundancies in the data file
10100     - experiment uses looped cells
10101     - added matlab directory with diagnostic scripts for plotting of output
10102    
10103    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
10104     - read AIM physics parameters from a file (data.aimphys)
10105     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
10106    
10107    checkpoint46j_post (2002/10/07)
10108    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
10109    o move wVel computation at the end of the time step, in S/R integr_continuity
10110    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
10111    o update timeave pkg for wVel diagnostic.
10112    checkpoint46j_pre (2002/09/27)
10113    
10114    checkpoint46i_post (2002/09/25)
10115    o Clean up AIM package (and keep the results unchanged):
10116      include CPP_OPTION and use IMPLICT NONE in all routines ;
10117      declare all the variables _RL ; use _d 0 for all numerical constants.
10118      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
10119    
10120    checkpoint46h_post (2002/09/25)
10121    o cleaned up the use of rhoNil and rhoConst.
10122      - rhoNil should only appear in the LINEAR equation of state, everywhere
10123        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
10124        and the dynamical equations are all divided by rhoConst
10125    o introduced new parameter rhoConstFresh, a reference density of fresh
10126      water, to remove the fresh water flux's dependence on rhoNil. The default
10127      value is 999.8 kg/m^3
10128    o cleanup up external_forcing.F and external_forcing_surf.F
10129      - can now be used by both OCEANIC and OCEANICP
10130    checkpoint46h_pre (2002/09/18)
10131    
10132     Added code to convert surface volume flux (fresh water) into
10133     a mass flux when using P coordinates in the ocean (OCEANICP).
10134     Note: It assumes you have set rho0=rhoConst=density of fresh water.
10135    
10136    checkpoint46g_post (2002/09/18)
10137    o Include a new diagnostic variable phiHydLow for the ocean model
10138      - in z-coordinates, it is the bottom pressure anomaly
10139      - in p-coordinates, it is the sea surface elevation
10140      - in both cases, these variable have global drift, reflecting the mass
10141        drift in z-coordinates and the volume drift in p-coordinates
10142      - included time averaging for phiHydLow, be aware of the drift!
10143    o depth-dependent computation of Bo_surf for pressure coordinates
10144      in the ocean (buoyancyRelation='OCEANICP')
10145      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
10146        Theta, Salinity, and Pressure in the parameter list. This routine is
10147        presently contained in find_rho.F. This routine does not give the
10148        correct density for 'POLY3', which would be a z-dependent reference
10149        density.
10150    o cleaned up find_rho
10151      - removed obsolete 'eqn' from the parameter list.
10152    o added two new verification experiments: gop and goz
10153      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
10154    checkpoint46g_pre (2002/09/16)
10155    
10156    checkpoint46f_post (2002/09/16)
10157    o Enable tangent linear (forward mode) gradient checks:
10158      - extended active file handling to g_... files
10159      - added TANGENT_SIMULATION to theSimulationMode
10160      - extended grdchk package accordingly
10161    o added tangent linear setup in verification/carbon/code_ftl
10162    o added adjoint setup in verification/front_relax/code_ad
10163    
10164    checkpoint46e_post (2002/09/05)
10165    o Added new equation of state -> MDJWF
10166      - EOS of McDougall et al., 2002, JAOT, submitted
10167      - caveat: the equation of state is only valid for a smaller (more
10168        realistic?) range of values than JMD95P/Z and UNESCO
10169      - added masks to the calculation of pressure in store_pressure
10170      - added more check values for density in check_eos (ini_eos.F), some of
10171        the old check values are out of the range of the MDJWF-eos, so don't
10172        expect perfect matches for those
10173    checkpoint46e_pre (2002/08/19)
10174    
10175    checkpoint46d_post (2002/08/19)
10176    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
10177      'OCEANICP', also initialised field pressure correctly in ini_eos in the
10178      case of pressure coordinates. eosType='JMD95Z' in
10179      combination with buoyancyRelation='OCEANICP' now causes an error.
10180    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
10181      in find_alpha/beta.
10182    checkpoint46d_pre (2002/08/15)
10183    
10184    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
10185      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
10186    
10187    checkpoint46c_post (2002/08/15)
10188    o Changes necessary for ocean in p-coordinates
10189     -  Added new buoyancy relation = 'OCEANICP'
10190     -  Added new parameters = gravitySign (this used to be contained inside
10191        the factor dRdZ which I added when we first switched to R coordinates).
10192     X GM/Redi is not compatible (yet)
10193     X bottom drag and no-slip need to be debugged.
10194    checkpoint46c_pre (2002/08/07)
10195    
10196    checkpoint46b_post (2002/08/07)
10197    o Added new equation of state -> JMD95Z and JMD95P
10198      - EOS of Jackett and McDougall, 1995, JAOT
10199      - moved all EOS parameters into EOS.h
10200      - new routines ini_eos.F, store_pressure.F
10201    o Added UNESCO EOS, but not recommended because it requires
10202      in-situ temperature (see JMD95)
10203    o Modified formatting for knudsen2.f in utils/knudsen2 and added
10204      unesco.f to be used with POLY3
10205    checkpoint46b_pre (2002/07/31)
10206    
10207    checkpoint46a_post (2002/07/31)
10208    o Added (atmospheric) pressure loading
10209      - new field in FFIELDS.h, etc...
10210      - new cpp flag ATMOSPHERIC_LOADING
10211    o Changed hFacC to _hFacC in calc_phi_hyd.F
10212    o Added SHORTWAVE_HEATING to some files for consistency
10213    checkpoint46a_pre (2002/07/13)
10214    
10215    checkpoint46 (2002/07/13)
10216    further merges from release1_p5
10217    o new ctrl package
10218      - adopted from ECCO environment to enable optimization
10219      - added Eliassen Palm fluxes to controls
10220    o added Eliassen Palm flux controls to gradient check package
10221    o cost package
10222      - Compatible with new ctrl package
10223      - added Eliassen Palm cost hooks
10224      - modif's of existing cost functions
10225    o Adjoint-related bug fixes in kpp:
10226      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
10227      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
10228    o autodiff package
10229      - flow directives:
10230        + new for S/R do_the_model_io
10231        + enhanced for S/R checkpoint
10232        + new gmredi.flow
10233      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
10234        disable adcommon.h/g_common.h by default.
10235      - fixed problem for adjoint of global_max
10236    o modified verification/carbon/
10237    o New setup for adjoint of global_ocean
10238    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
10239    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
10240    o incorporated hooks for sponge layer code (external_forcing.F)
10241    
10242    checkpoint45d_post (2002/07/12)
10243    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
10244    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
10245      (affects plume_on_slope "cg2d" output)
10246    o add new parameter deltaTfreesurf for free-surface time stepping
10247    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
10248    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
10249    o change phiMin in exp1 (to agree with documentation)
10250    o add new flags:
10251     - T,S forcing inside/outside Adams-Bashforth
10252     - turn off temp,salt advection and/or forcing
10253     - for each tracer, define internal flag for multiDimAdvection & A-B
10254    o monitor: change definition of KE to check conservation of Energy
10255    
10256    checkpoint45c_post (2002/05/30)
10257    o Removed f90 comments ("!")
10258    o Modified initialisations to enable exf package for MITgcm
10259      (without invoking ECCO_PACKAGE).
10260    o modifications to gradient check package (Martin Losch)
10261      - enable centered differences
10262      - modified format of standard output
10263    
10264    checkpoint45b_post (2002/05/30)
10265    o cleaned exchange calls in cg2d
10266    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
10267    o included CPP option SINGLE_LAYER_MODE in thermodynamics
10268      to configure barotropic setup (Martin Losch)
10269    o moved some initialisations within bi,bj loop in dynamics
10270      (TAF flow dependency)
10271    o in initialise_varia, moved call packages_init_variables
10272      before convective_adjustment_init
10273      (corresponding adjustment of TAF tape initialisation).
10274    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
10275    
10276    checkpoint45a_post (2002/05/01)
10277    o compute Rho over the whole domain (extend iMin,jMin indices)
10278    o specific exchange for X-slice domain (case Ny=1)
10279    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
10280    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
10281    
10282    checkpoint44h_post = checkpoint45
10283    o Fix to restore differentiability:
10284      place at which packages_init_variables is called in
10285      initialise_varia is crucial for reverse control flow.
10286    o modifications in GMRedi to enable stable adjoint
10287      (corresponding modif's in thermodynamics, dynamics)
10288    o added missing hook for sponge layer code in external_forcing
10289    o modified test cost functions
10290    o storing in gad_advection (plus removal of write(0,*)!
10291    o missing headers TR1.h added in convective_adjustment routines
10292    o errorMessageUnit set non-equal zero in eeboot
10293      (conflict on some platforms, e.g. IBM SP3)
10294    o modified carbon verif.
10295    
10296    checkpoint44h_pre (2002/03/14)
10297    o vertical grid option: allow to put the Interface at the middle between
10298      2 cell-centers ; replace delZ in pkg/kpp by drF.
10299    o GM Advective form: Tracers are advected using the residual transport (=
10300      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
10301    
10302    checkpoint44g_post (2002/03/05)
10303  o fix surface correction term in multiDimAdvection (affects plume_on_slope  o fix surface correction term in multiDimAdvection (affects plume_on_slope
10304    results) ; ifdef missing in thermodynamics.F    results) ; ifdef missing in thermodynamics.F
10305    
# Line 68  o merge of relevant stuff from the ecco- Line 10364  o merge of relevant stuff from the ecco-
10364  o check parameters & config (chkpt44a_pre,post)  o check parameters & config (chkpt44a_pre,post)
10365  o OBC and NonLin_FrSurf.  o OBC and NonLin_FrSurf.
10366    
10367  checkpoint44  checkpoint44 (2002/01/18)
10368  o fix bug in mom_vi_del2uv  o fix bug in mom_vi_del2uv
10369  o select when filters are applied ; add options to zonal_filter (data.zonfilt)  o select when filters are applied ; add options to zonal_filter (data.zonfilt)
10370  o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)  o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
# Line 76  o update AIM experiments (NCEP input fil Line 10372  o update AIM experiments (NCEP input fil
10372  o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)  o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
10373  o added some stuff for AD  o added some stuff for AD
10374    
10375  checkpoint43  checkpoint43 (2001/09/28)
10376  o added two new advection tests  o added two new advection tests
10377  o added global 4x4 degree ocean test  o added global 4x4 degree ocean test
10378  o added test of H&S94 with free surface on cube  o added test of H&S94 with free surface on cube
10379  o some final mods for gradient check, adjoint,...  o some final mods for gradient check, adjoint,...
10380    
10381  checkpoint42  checkpoint42 (2001/09/27)
10382    Fixed AD-related problems:    Fixed AD-related problems:
10383  o Store directives up-to-date with re-arranged Adams-Bashforth  o Store directives up-to-date with re-arranged Adams-Bashforth
10384    (mainly thermodynamics.F)    (mainly thermodynamics.F)
# Line 94  o Modified store directives for split of Line 10390  o Modified store directives for split of
10390    for the case ALLOW_KPP    for the case ALLOW_KPP
10391  o Cleaned argument list for timestep_tracer.F  o Cleaned argument list for timestep_tracer.F
10392    
10393  checkpoint41  checkpoint41 (2001/09/27)
10394  o re-formatted/added comments in prologues of key subroutines  o re-formatted/added comments in prologues of key subroutines
10395    to work with protex    to work with protex
10396    
10397  checkpoint40  checkpoint40 (2001/09/27)
10398  o moved calc_gs, calc_gt and calc_tr1 back to model/src  o moved calc_gs, calc_gt and calc_tr1 back to model/src
10399  o added FLT (floats) package from Arne along with demo. experiment  o added FLT (floats) package from Arne along with demo. experiment
10400  o re-arranged Adams-Bashforth scheme for tracers to allow easier  o re-arranged Adams-Bashforth scheme for tracers to allow easier
# Line 107  o more mods for non-linear free-surface Line 10403  o more mods for non-linear free-surface
10403  o modified multi-dim method to work on cube  o modified multi-dim method to work on cube
10404  o bug fix in KPP (from DM)  o bug fix in KPP (from DM)
10405    
10406  checkpoint40pre9  checkpoint40pre9 (2001/09/27)
10407  o added DST advection schemes  o added DST advection schemes
10408  o fix MPI bug on SGI's  o fix MPI bug on SGI's
10409  o modifications for non-linear free-surface  o modifications for non-linear free-surface
# Line 117  o changes to commenting of arguments for Line 10413  o changes to commenting of arguments for
10413  o added/updated many matlab scripts  o added/updated many matlab scripts
10414  o added multi-dimensional advection method for tracers  o added multi-dimensional advection method for tracers
10415        
10416  checkpoint40pre8  checkpoint40pre8 (2001/09/05)
10417  o new package rw/  o new package rw/
10418    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
10419    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside
# Line 136  o TAMC-related update to cope with mom_f Line 10432  o TAMC-related update to cope with mom_f
10432    currently nothing implemented to switch this storing off    currently nothing implemented to switch this storing off
10433    in case fluxform is used since no CPP flag available).    in case fluxform is used since no CPP flag available).
10434    
10435  checkpoint40pre7  checkpoint40pre7 (2001/08/14)
10436  o bug fix in dynamics.F  o bug fix in dynamics.F
10437    calc_viscosity called before k=1,Nr loop.    calc_viscosity called before k=1,Nr loop.
10438  o added some #ifdef's ALLOW_PASSIVE_TRACER  o added some #ifdef's ALLOW_PASSIVE_TRACER
10439  o cleaned initialisations in ctrl_map_ini  o cleaned initialisations in ctrl_map_ini
10440    related to TAF    related to TAF
10441    
10442  checkpoint40pre6  checkpoint40pre6 (2001/08/13)
10443  o split dynamics into thermodynamics & dynamics  o split dynamics into thermodynamics & dynamics
10444  o corresponding split of calc_diffusivity into  o corresponding split of calc_diffusivity into
10445    calc_diffusivity, calc_viscosity    calc_diffusivity, calc_viscosity
# Line 151  o corresponding split of calc_diffusivit Line 10447  o corresponding split of calc_diffusivit
10447  o Added diffkr, kapgm to control variables  o Added diffkr, kapgm to control variables
10448  o bug fix in gmredi_slope_limit for ldd97  o bug fix in gmredi_slope_limit for ldd97
10449    
10450  checkpoint40pre5  checkpoint40pre5 (2001/07/31)
10451  o proper initialization of Adams-Bashforth time stepping  o proper initialization of Adams-Bashforth time stepping
10452    + uses forward step for very first step of model (iter=0)    + uses forward step for very first step of model (iter=0)
10453  o re-generated *all* output since almost all output is modified by this  o re-generated *all* output since almost all output is modified by this
# Line 165  o added new expt "solid-body.cs-32x32x1" Line 10461  o added new expt "solid-body.cs-32x32x1"
10461    + this uses an alternative form of ini_curvilinear_grid.F which    + this uses an alternative form of ini_curvilinear_grid.F which
10462      is not necessarily any better than the current one...      is not necessarily any better than the current one...
10463    
10464  checkpoint40pre4  checkpoint40pre4 (2001/07/30)
10465  o added re-initialisations of utrans,vtrans,rtrans in  o added re-initialisations of utrans,vtrans,rtrans in
10466    calc_common_factors which are crucial for TAF.    calc_common_factors which are crucial for TAF.
10467  o extended iMin,jMin range for calc_common_factors,  o extended iMin,jMin range for calc_common_factors,
# Line 173  o extended iMin,jMin range for calc_comm Line 10469  o extended iMin,jMin range for calc_comm
10469  o added option ALLOW_PASSIVE_TRACER  o added option ALLOW_PASSIVE_TRACER
10470  o a few minor updates and fixes  o a few minor updates and fixes
10471    
10472  checkpoint40pre3  checkpoint40pre3 (2001/07/13)
10473  o created calc_gtr1.F for gad package  o created calc_gtr1.F for gad package
10474  o split the_main_loop and re-introduced forward_step  o split the_main_loop and re-introduced forward_step
10475  o some recomputations of nIter0 for TAMC  o some recomputations of nIter0 for TAMC
10476    
10477  checkpoint40pre2  checkpoint40pre2 (2001/07/13)
10478  o Updated to latest branch of AJA, JMC  o Updated to latest branch of AJA, JMC
10479  o Added gradient check package  o Added gradient check package
10480  o Added routines for passive tracer handling  o Added routines for passive tracer handling
10481  o Added carbon sequestration sensitivity experiment  o Added carbon sequestration sensitivity experiment
10482    
10483  checkpoint39  checkpoint39 (2001/05/14)
10484   o Modifications and fixes to support TAMC   o Modifications and fixes to support TAMC
10485     (mainly missing or wrong directives)     (mainly missing or wrong directives)
10486   o Corrected common blocks when fooling TAMC to produce adjoint I/O   o Corrected common blocks when fooling TAMC to produce adjoint I/O
# Line 198  checkpoint39 Line 10494  checkpoint39
10494           (NB: this is not the full ECCO environment)           (NB: this is not the full ECCO environment)
10495   o disabled some packages by default in genmake   o disabled some packages by default in genmake
10496    
10497  checkpoint38  checkpoint38 (2001/04/10)
10498   o see notes_c37_adj.txt   o see notes_c37_adj.txt
10499   o corrected wrong layer index in external_forcing_t   o corrected wrong layer index in external_forcing_t
10500   o replaced the_main_loop/forward_step by the_main_loop   o replaced the_main_loop/forward_step by the_main_loop
# Line 206  checkpoint38 Line 10502  checkpoint38
10502     (replaced criteria for initial/final state)     (replaced criteria for initial/final state)
10503   o added runtime flag for pre-C35 pickups: usePickupBeforeC35   o added runtime flag for pre-C35 pickups: usePickupBeforeC35
10504    
10505  checkpoint37  checkpoint37 (2001/03/13)
10506   o mdsio.F routine split and packaged in pkg/mdsio   o mdsio.F routine split and packaged in pkg/mdsio
10507     (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not     (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
10508      used unless genmake -disable=mdsio)      used unless genmake -disable=mdsio)
# Line 223  checkpoint37 Line 10519  checkpoint37
10519   o Non-Hydrostatic pickup file Pb fixed.   o Non-Hydrostatic pickup file Pb fixed.
10520   o bug with Rigid-lid version (since c35) fixed.     o bug with Rigid-lid version (since c35) fixed.  
10521    
10522  checkpoint36  checkpoint36 (2001/02/20)
10523   o implement Crank-Nickelson barotropic time-stepping   o implement Crank-Nickelson barotropic time-stepping
10524   o recover Time-Average diagnostics   o recover Time-Average diagnostics
10525   o fix Pb in checkpoint (PR#19)   o fix Pb in checkpoint (PR#19)
10526   o AIM become a standard package ; clean unused CPP_kees   o AIM become a standard package ; clean unused CPP_kees
10527    
10528  checkpoint35  checkpoint35 (2001/02/08)
10529   o subtantial rewrite of dynamics.f   o subtantial rewrite of dynamics.f
10530   o allows staggered time-stepping   o allows staggered time-stepping
10531   o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt   o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
10532   o added bottom drag (linear + quadratic)   o added bottom drag (linear + quadratic)
10533    
10534  checkpoint34  checkpoint34 (2001/01/30)
10535   o Modified exchange routines for correct reverse simulation.   o Modified exchange routines for correct reverse simulation.
10536   o Added verification output to comply with bug fix in impldiff.F   o Added verification output to comply with bug fix in impldiff.F
10537     as of c33 (exp2, natl_box).     as of c33 (exp2, natl_box).
# Line 246  checkpoint34 Line 10542  checkpoint34
10542   o Added routine GLOBAL_SUM_INT to global_sum.F   o Added routine GLOBAL_SUM_INT to global_sum.F
10543   o Added mdsio_gl.F for ECCO purposes.   o Added mdsio_gl.F for ECCO purposes.
10544    
10545  checkpoint33  checkpoint33 (2000/11/30)
10546   o Fixed bug in lower BC in impldiff.F   o Fixed bug in lower BC in impldiff.F
10547   o Fixed confusion about units of forcing arrays in FFIELDS.h   o Fixed confusion about units of forcing arrays in FFIELDS.h
10548     namely Fu,Fv,Qnet,Qsw,EmPmR:     namely Fu,Fv,Qnet,Qsw,EmPmR:
# Line 264  checkpoint33 Line 10560  checkpoint33
10560       possibly use them.       possibly use them.
10561   o Corrected genmake to delete a temporary file during configuration   o Corrected genmake to delete a temporary file during configuration
10562    
10563  checkpoint32  checkpoint32 (2000/11/13)
10564   o Scaling of forcing fields moved from external_forcing.F to   o Scaling of forcing fields moved from external_forcing.F to
10565     external_fields_scale.F, called directly after loading fields.     external_fields_scale.F, called directly after loading fields.
10566   o Surface relaxation terms added to surface tendency fields in   o Surface relaxation terms added to surface tendency fields in
# Line 275  checkpoint32 Line 10571  checkpoint32
10571   o Modifications and bug fixes in KPP package.   o Modifications and bug fixes in KPP package.
10572   o Verification experiment for KPP added (verification/nat_box/)   o Verification experiment for KPP added (verification/nat_box/)
10573    
10574  checkpoint31  checkpoint31 (2000/09/11)
10575   o Packages interface brought in line with defined standard   o Packages interface brought in line with defined standard
10576     -> new routines packages_...F     -> new routines packages_...F
10577     -> changes in initialise_fixed.F, initialise_varia.F     -> changes in initialise_fixed.F, initialise_varia.F
# Line 292  checkpoint31 Line 10588  checkpoint31
10588     - not yet tested for GMRedi.     - not yet tested for GMRedi.
10589     - not yet tested for KPP.     - not yet tested for KPP.
10590    
10591  checkpoint30  checkpoint30 (2000/07/13)
10592   o Updates for OBCs   o Updates for OBCs
10593   o New experiment for test OBCs (internal_wave)   o New experiment for test OBCs (internal_wave)
10594   o New output.txt in verification/exp4/results/   o New output.txt in verification/exp4/results/
# Line 301  checkpoint30 Line 10597  checkpoint30
10597   o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)   o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
10598     and entry for T90 in genmake     and entry for T90 in genmake
10599    
10600  checkpoint29  checkpoint29 (2000/06/21)
10601   o packaged KPP and GM/Redi   o packaged KPP and GM/Redi
10602    
10603  checkpoint28  checkpoint28 (2000/06/09)
10604   o Corrected initialization of hFacMin for difference vertical coordinates   o Corrected initialization of hFacMin for difference vertical coordinates
10605   o Modified calculation of partial cell thickness to more robust algorithm   o Modified calculation of partial cell thickness to more robust algorithm
10606   o config_summary.F: replaced write_1D_... by write_0D_...   o config_summary.F: replaced write_1D_... by write_0D_...
# Line 317  checkpoint28 Line 10613  checkpoint28
10613     included store directives and tape key computations required for TAMC.     included store directives and tape key computations required for TAMC.
10614   o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC   o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
10615    
10616  checkpoint27  checkpoint27 (2000/04/10)
10617   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
10618     formulation works properly with variable resolution.     formulation works properly with variable resolution.
10619   o restructured the calling tree between the_model_main() and dynamics()   o restructured the calling tree between the_model_main() and dynamics()
# Line 325  checkpoint27 Line 10621  checkpoint27
10621   o introduced initialization file pSurfInitFile for free surface (cg2d_x)   o introduced initialization file pSurfInitFile for free surface (cg2d_x)
10622     in new routine ini_psurf()     in new routine ini_psurf()
10623    
10624  checkpoint26  checkpoint26 (2000/04/05)
10625   o moved some #ifdef in optional routines to encompass everything   o moved some #ifdef in optional routines to encompass everything
10626     except the argument declarations. This was using up some memory.     except the argument declarations. This was using up some memory.
10627   o fixed macros like _ADT to work with both versions of Linux cpp   o fixed macros like _ADT to work with both versions of Linux cpp
# Line 335  checkpoint26 Line 10631  checkpoint26
10631     (macros are now in eesupp/inc/CPP_EEMACROS.h)     (macros are now in eesupp/inc/CPP_EEMACROS.h)
10632   o patch for 2 processor JAM mode   o patch for 2 processor JAM mode
10633    
10634  checkpoint25  checkpoint25 (2000/03/15)
10635   o updates for OBCs and NH   o updates for OBCs and NH
10636   o dramatically reduced memory usage   o dramatically reduced memory usage
10637   o added "JAM" routines for use on Artic network   o added "JAM" routines for use on Artic network
# Line 346  checkpoint25 Line 10642  checkpoint25
10642      an explicit free-surface option)      an explicit free-surface option)
10643   o initial state input files for U and V   o initial state input files for U and V
10644    
10645  checkpoint24  checkpoint24 (1999/08/02)
10646   o Removed some spurious "REAL"s   o Removed some spurious "REAL"s
10647   o Updated KPP to latest version from JPL   o Updated KPP to latest version from JPL
10648   o Added a COS(latitude) in horizontal viscosity   o Added a COS(latitude) in horizontal viscosity
10649    
10650  checkpoint23  checkpoint23 (1999/05/26)
10651   o Added del^4 diffusion for salt and temperature   o Added del^4 diffusion for salt and temperature
10652   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
10653    
10654  checkpoint22  checkpoint22 (1999/05/18)
10655   o Made many small changes: implicit none, format(i5), etc...   o Made many small changes: implicit none, format(i5), etc...
10656   o Introduced KPP mixing scheme (compiles and runs but *not* tested)   o Introduced KPP mixing scheme (compiles and runs but *not* tested)
10657    
10658  checkpoint21  checkpoint21 (1999/05/18)
10659   o Introduced new I/O package that supports direct-access records (mdsio.F)   o Introduced new I/O package that supports direct-access records (mdsio.F)
10660   o Split-up mid-level I/O routines   o Split-up mid-level I/O routines
10661   o Updated input data for experiments 0,1,2,4 and 5   o Updated input data for experiments 0,1,2,4 and 5
10662   o Finally removed the genmake.* scripts (everyone seems happy with genmake)   o Finally removed the genmake.* scripts (everyone seems happy with genmake)
10663    
10664  checkpoint20  checkpoint20 (1999/03/22)
10665   o Tidied up open-boundaries some more   o Tidied up open-boundaries some more
10666   o Added non-hydrostatic code   o Added non-hydrostatic code
10667   o Fixed some input data   o Fixed some input data
10668   o Modified MPI start-up to work in "coupled" context.   o Modified MPI start-up to work in "coupled" context.
10669    
10670  checkpoint19  checkpoint19 (1998/12/15)
10671   o Tidied up directory structure for verification experiments.   o Tidied up directory structure for verification experiments.
10672   o Added new code for open boundaries.   o Added new code for open boundaries.
10673   o Corrected advective terms near boundaries.   o Corrected advective terms near boundaries.
# Line 379  checkpoint19 Line 10675  checkpoint19
10675   o Implemented free-slip/no-slip BCs and del^4 dissipation.   o Implemented free-slip/no-slip BCs and del^4 dissipation.
10676   o Split default parameters out of ini_parms.F into set_defaults.F.   o Split default parameters out of ini_parms.F into set_defaults.F.
10677    
10678  checkpoint18  checkpoint18 (1998/11/30)
10679   o Further changes for optional code generation with   o Further changes for optional code generation with
10680     CPP - ugh!     CPP - ugh!
10681    
10682  checkpoint17  checkpoint17 (1998/11/03)
10683   o Beginning to incorporating modularity   o Beginning to incorporating modularity
10684     for supporting atmos. and ocean configs.     for supporting atmos. and ocean configs.
10685   o Small changes for TAMC complinace   o Small changes for TAMC complinace
10686   o New ultra simple test case. Barotropic box   o New ultra simple test case. Barotropic box
10687     configuration "exp0".     configuration "exp0".
10688    
10689  checkpoint16  checkpoint16 (1998/10/28)
10690   o Minor changes to exchange routines to support   o Minor changes to exchange routines to support
10691     accumulation in reverse mode. Adjoint of an     accumulation in reverse mode. Adjoint of an
10692     assignment is an addition.     assignment is an addition.
# Line 398  checkpoint16 Line 10694  checkpoint16
10694     syntax) and by g77 under Linux ( 72 character     syntax) and by g77 under Linux ( 72 character
10695     limit ).     limit ).
10696    
10697  checkpoint15  checkpoint15 (1998/09/29)
10698   Rewrote exchange routines to allow   Rewrote exchange routines to allow
10699   o General tile <-> tile connectivity.   o General tile <-> tile connectivity.
10700   o TAMC reverse mode flag ( is this really needed? )   o TAMC reverse mode flag ( is this really needed? )
# Line 407  checkpoint15 Line 10703  checkpoint15
10703     shmput/shmget, VIA, SYSV shmem and every other cool     shmput/shmget, VIA, SYSV shmem and every other cool
10704     communication method.     communication method.
10705    
10706  checkpoint14  checkpoint14 (1998/09/09)
10707   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
10708   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.
10709    
10710  checkpoint13  checkpoint13 (1998/07/17)
10711   Release which corrects global_max problem and a couple   Release which corrects global_max problem and a couple
10712   of KGM time-averaging diagnostic errors. Also contains   of KGM time-averaging diagnostic errors. Also contains
10713   a double-gyre experiment setup as well as the baseline   a double-gyre experiment setup as well as the baseline
# Line 426  branch-point-rdot Line 10722  branch-point-rdot
10722   I don't want to commit the rDot to the main-trunk until   I don't want to commit the rDot to the main-trunk until
10723   we've actually tested it...   we've actually tested it...
10724    
10725  checkpoint12  checkpoint12 (1998/07/08)
10726   Tidy up and added generic genmake script (formerly   Tidy up and added generic genmake script (formerly
10727   configure script).   configure script).
10728   Released to testers.   Released to testers.
10729    
10730  checkpoint11  checkpoint11 (1998/07/02)
10731   Re-arranged initialise() and introduced ini_vertical_grid()   Re-arranged initialise() and introduced ini_vertical_grid()
10732   and ini_masks_etc().   and ini_masks_etc().
10733    
10734  checkpoint10  checkpoint10 (1998/07/01)
10735   Introduced the configure script.   Introduced the configure script.
10736   Separated out the diags package.   Separated out the diags package.
10737   Added template for writing time-averages of tile/intermediate quantities.   Added template for writing time-averages of tile/intermediate quantities.
10738   Updated SIZE.h in exp2 and made the data big-endian.   Updated SIZE.h in exp2 and made the data big-endian.
10739    
10740  checkpoint9  checkpoint9 (1998/06/22)
10741   MPI fix. Filename changes (meta/data). salbin*y stuff.   MPI fix. Filename changes (meta/data). salbin*y stuff.
10742   General tidy-up.   General tidy-up.
10743   SST.bin SSS.bin added to verification/exp2   SST.bin SSS.bin added to verification/exp2
10744    
10745  checkpoint8  checkpoint8 (1998/06/22)
10746   Inludes time-dependant forcing and time-averaging.   Inludes time-dependant forcing and time-averaging.
10747   Works at 4x4 and 2.8125x2.8125 global   Works at 4x4 and 2.8125x2.8125 global
10748    
# Line 456  checkpoint7-4degree-ref Line 10752  checkpoint7-4degree-ref
10752   model etc..   model etc..
10753   Configured for verification/exp2 - 4 degree global, two process.   Configured for verification/exp2 - 4 degree global, two process.
10754    
10755  checkpoint7  checkpoint7 (1998/06/15)
10756   Created by cnh   Created by cnh
10757   Simple 4 degree global simulation   Simple 4 degree global simulation
10758   configuration.   configuration.
# Line 464  checkpoint7 Line 10760  checkpoint7
10760   hydrography, bathymetry etc   hydrography, bathymetry etc
10761   Does not include Heat Flux and E-P   Does not include Heat Flux and E-P
10762    
10763  checkpoint6  checkpoint6 (1998/06/08)
10764   Created by cnh   Created by cnh
10765   merged checkpoint5 with CD and   merged checkpoint5 with CD and
10766   spherical polar code.   spherical polar code.
10767   Still some problems with GM Redi   Still some problems with GM Redi
10768   abd full topography.   abd full topography.
10769    
10770  checkpoint5  checkpoint5 (1998/06/08)
10771   Created by AJA   Created by AJA
10772   contains updates to GM Redi   contains updates to GM Redi
10773   and reordered timestepping loop   and reordered timestepping loop
10774   for Implicit Diffusion.   for Implicit Diffusion.
10775    
10776  checkpoint4  checkpoint4 (1998/05/30)
10777   Created by cnh   Created by cnh
10778   Contains memory saving macros ( _rdxc etc..) for when   Contains memory saving macros ( _rdxc etc..) for when
10779   grid variations are limited.   grid variations are limited.
10780   Contains polynomial coeffs for EOS and knudsen program   Contains polynomial coeffs for EOS and knudsen program
10781   for generation.   for generation.
10782    
10783  checkpoint3  checkpoint3 (1998/05/26)
10784   Created by cnh   Created by cnh
10785   Added extra flags for runtime options   Added extra flags for runtime options
10786   Added this file   Added this file

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