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revision 1.1743 by mlosch, Mon Sep 24 15:07:38 2012 UTC revision 1.2356 by jmc, Wed Oct 4 20:43:58 2017 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o model:
8      - add new 2-d forcing field for time-dependent geopotential anomaly (e.g.,
9        tidal forcing), in m^2/s^2 ; add run-time param to allow to turn it off.
10    o eesupp/src:
11      - shift standardMessageUnit in eeboot.F and I/O units in mdsfindunit.F
12        for coupling to GEOS AGCM: HACK_FOR_GMAO_CPL option in CPP_EEOPTIONS.h
13    
14    checkpoint66k (2017/09/20)
15    o model/src:
16      - add missing CPP brackets (ALLOW_COST, ALLOW_CTRL in load_fields_driver.F
17        and the_model_main.F)
18    o ctrl:
19      - use zeroRL in place of fc when ALLOW_COST is not compiled (in ctrl_pack.F)
20      - call MDS_READ_FIELD / MDS_WRITE_FIELD instead of deprecated
21        mdsreadfield / mdswritefield (in ctrl_get_gen.F, ctrl_map_ini_gen.F,
22        ctrl_map_ini_genarr.F, and ctrl_map_ini_gentim2d.F )
23    o eesupp:
24      - add CPP option to activate some pieces of code for coupling to GEOS AGCM;
25      - shift commonly used IO unit (in eeboot.F) for coupling to GEOS AGCM.
26    o pkg/bling:
27      - bling_production: Fix typo in calcium carbonate uptake. Also rearranging
28        and cleaning
29    o model/src:
30      - move k loop inside correction_step.F (+ update calling S/R)
31      - collect implicit pressure gradient tendencies in local 2-D array;
32        affect results (at machine truncation level) when using 3-D solver; update
33        output of exp.: exp4 (x1), global_ocean.cs32x15 (x2),hs94.cs-32x32x5.impIGW,
34                        rotating_tank, short_surf_wave,tutorial_deep_convection (x2)
35                        & tutorial_plume_on_slope.
36    
37    checkpoint66j (2017/08/15)
38    o pkg/ptracers:
39      - fix surface forcing under ice-shelf (useShelfIce=T).
40    o pkg/atm_phys:
41      - use hFac weighted average when applying A-grid atm-phys momentum tendency
42        to C-grid dynamics; this ensures wind-stress match mom tendency.
43    o eesupp/src:
44      - change default for opening scratch files to avoid STATUS='SCRATCH'
45      - close scratch files with STATUS='DELETE'
46      - changes affect eeset_parms.F and open_copy_data_file.F and many routines
47        that read namelists (because they close the scratch files)
48      - you can revert to old default by setting USE_FORTRAN_SCRATCH_FILES
49        in CPP_EEOPTIONS.h (tested in ideal_2D_oce/code & lab_sea/code_ad)
50    o pkg/atm_phys:
51      - fix unset arguments in (unused) S/R surface_flux_0d.
52    o eesupp/src:
53      - add argument "procId" to S/R EESET_PARMS to fix  scratchFile1 & 2 setting
54        (case TARGET_BGL or TARGET_CRAYXT) for early call (from eeboot_minimal.F):
55        called with myProcId in eeboot.F and with mpiMyWId in eeboot_minimal.F
56    o pkg/streamice:
57      - remove blank between _EXCH_XY_RL and "()", which my Apple Xcode
58        preprocessor /usr/bin/cpp cannot interpret; 3 instances in total in
59        streamice_driving_stress_fd.F and streamice_advect_2dtracer.F
60    o pkg/diagnostics:
61      - new option to allow to cumulate thickness-factor (hFac) weighted field
62        (if field permitted); implemented by changing sign of "jdiag" pointer
63        (> 0: cumlulate field, < 0: cumulate hFac weighted field).
64        a) restricted to 3-d (Nr levels), level centered diagnostics at U,V or Cell
65           center position (gcode(2)='U','V','M' & gcode(3,5,9:10)='R',' ','MR')
66        b) for now, activated by setting fileFlags 3rd character to 'h'.
67    
68    checkpoint66i (2017/07/18)
69    o pkg/cheapaml:
70      - add parameter "useRelativeWind", default set to False; this change the
71        previous setting which was always using relative wind.
72    o add hooks for the Parallel Data Assimilation Framework PDAF
73        (http://pdaf.awi.de/) in eeboot_minimal.F and the_main_loop.F;
74        to use set CPP-flag USE_PDAF in CPP_EEOPTIONS.h
75    o pkg/exf:
76      - interpolation of vector fields (exf_interp_uv.F): fix bug in calculation
77        of South-Pole mean value.  
78      - interpolation near the poles, case where second additional row is at the
79        pole (or beyond the pole and moved to the pole): change first addition row
80        value to a linear interpolation between pole and 1rst (S.pole)/last (N.pole)
81        row (instead of just a copy of it).
82    o pkg/seaice:
83      - prevent JFNK and KRYLOV solvers from trying to reduce a residual of 0
84      - add the option to compute no-slip du/dy, dv/dx (i.e.
85        the offdiagonal strain rate e12) by a second order approximation
86        on the boundary; works only with JFNK, KRYLOV, or EVP solvers, because
87        it is too messy to implement for the implicit LSR matrix.
88        SEAICE_2ndOrderBC = .FALSE. by default
89    
90    checkpoint66h (2017/06/02)
91    o pkg/seaice:
92      - add new routines to compute stress tensor components and stress tensor
93        divergence to be reused in s/r seaice_lsr and s/r seaice_calc_lhs
94      - change names of diagnostics SIsigI/II (commonly used for invariants)
95        to SIsig1/sig2 (more common for principal components) to avoid confusion
96    o pkf/exf:
97      - add a stop if useRelativeWind with un-updated uwind/vwind (e.g., constant);
98        similarly, stop if rotateStressOnAgrid with constant wind-stress.
99    o pkg/seaice:
100      - remove (comment out) diagnostics SIuwind,SIvwind,SIfu,SIfv (duplicate of
101        EXFuwind,EXFvwind,oceTAUX,oceTAUY) and point them to their equivalent.
102      - add diagnostics of wind-stress over seaice (SItaux,SItauy) and seaice
103        fraction weighted wind stress over ocean+seaice (SIatmTx,SIatmTy).
104    o pkg/diagnostics:
105      - small piece of code to rename (old) diagnostics, when namelist is processed.
106    o model/src:
107      - new run-time param (useMin4hFacEdges) to select method for setting hFacW,S:
108        originally, set as minimum of adjacent hFacC factor ; now (new default)
109        computed from rSurfW,S and rLowW,S by applying same rules as for hFacC.
110        Only matters when useShelfIce=T with particular ice-shelf cavity geometry.
111    o pkg/seaice:
112      - add momemtum advection, off by default, still in test phase
113        most of the momentum advection code is adapted and reused from mom_vecinv
114    o pkg/mom_vecinv:
115      - pass these runtime flags:
116        selectVortScheme, highOrderVorticity, upwindVorticity, useJamartMomAdv
117        as formal parameters to s/r mom_vi_u/v_coriolis, mom_vi_u/v_coriolis_c4,
118        so that these routines can also be used in pkg/seaice.
119    
120    checkpoint66g (2017/04/24)
121    o model/src:
122      - more robust ordering of column thickness integral (=Sum_k(drF*hFac) )
123        to get same expression (regarding machine truncation) in different places
124        in ini_masks_etc.F (e.g., rSurfC,W,S is now exactly zero when it should).
125        Update forward output of experiments: global_ocean.cs32x15 (all 5 except
126        viscA4), isomip (x3), tutorial_global_oce_in_p & tutorial_plume_on_slope.
127    o pkg/shelfice:
128      - ALLOW_SHIFWFLX_CONTROL: move setting of maskSHI from shelfice_update_masks.F
129        to shelfice_init_fixed.F
130      - change S/R SHELFICE_UPDATE_MASKS to SHELFICE_INIT_DEPTHS (still called from
131        ini_masks_etc.F for now) to update ocean upper boundary position according
132        to ice-shelf topography (instead of directly updating hFacC).
133    o model/src:
134      - move call to CTRL_INIT & CTRL_ADMTLM from the middle to the bottom of
135        packages_init_fixed.F to allow other pkgs to set mask and weight fields.
136    
137    checkpoint66f (2017/04/06)
138    o model/src:
139      - add specific run-time param to select level of printed plot-field-maps,
140        set by default to debugLevel. Remove internal param "printDomain".
141    o pkg/seaice:
142      - add flag to add snow mass to seaiceMassC/U/V, the default is
143        SEAICEaddSnowMass=.FALSE., not to change previous results
144    o pkg/bling
145      - Bug fix in bling_production regarding unit conversion for diagnostics
146        being put in the wrong place
147    o model/src:
148      - add back recomputation of rSurfW & S to ensure consistent column thickness
149        (needed for rStar) between Sum_k(hFac*drF) and rSurf-rLow, for now only
150        when using pkg/shelfice; was initially added on 2012/06/01 (ini_masks_etc.F
151        revision 1.51) but was removed accidentally on 2014/02/08 (v1.53).
152    o pkg/autodiff:
153      - clean-up "checkpoint.flow"
154    o pkg/rw (Contribution from Jody Klymak):
155        option to set mds file suffix as function of time in simulation:
156        *) new input parameter "rwSuffixType" (read from PARM03 namelist)
157           to select file suffix format; by default (=0), use iteration number;
158        *) add simple routine to return file suffix according to rwSuffixType;
159        *) in model/src and in most pkgs (except: atm2d, fizhi, regrid & streamice),
160           use new S/R to get file suffix, except for debug output file (diagFreq)
161           and pkgs offline & rbcs input files.
162    o pkg/rw:
163      - uniform processing of "I10" suffix across writing fld routines; used to
164        simplify debug writing of cg2/3d_b/x in solve_for_pressure.F & post_cg3d.F
165        (similar to cg3d.F, cg3d_ex0.F)
166    o pkg/mom_vecinv:
167      - highOrderVorticity in selectVortScheme=2 case: fix c4 coeff in splitted
168        vorticity flux (keep same sum in case vBarXm=vBaXp, uBarYm=uBarYp).
169    o pkg/bling:
170      - Many small changes intended to clean the code.
171        Unnecessary ADJOINT_SAFEs removed ;
172        removed BLING_COST.h BLING_CTRL.h bling_cost.F ;
173        diagnostics added.
174    
175    checkpoint66e (2017/03/14)
176    o pkg/exf:
177      - interpolation with #undef EXF_INTERP_USE_DYNALLOC: move buffer size
178        definition outside EXF_PARAM.h in new header file: EXF_INTERP_SIZE.h;
179        use fixed size buffer (passed to S/R EXF_INTERP & EXF_INTERP_UV) to
180        avoid any dynamic allocation ;
181      - S/R EXF_CHECK: add new check & stop when file-name is defined but not
182        read-in ; add warning when file is read-in but not used within pkg/exf ;
183        + check for buffer-size (if #undef EXF_INTERP_USE_DYNALLOC).
184      - update exf_summary.F (print {FLD}RepCycle).
185    o verification/global_with_exf:
186      - switch on exf interpolation in AD test (just like the forward test)
187    o pkg/mom_vecinv:
188      - add storage directives to avoid recomputations within mom_vecinv.F
189        which were generating seg. fault with gfortran -devel
190    o pkg/ctrl, pkg/smooth:
191      - initialize array halos which were generating seg. fault with
192        gfortran -devel in adjoint mode
193    o pkg/exf:
194      - for each input field, enable to specify a field specific repeat-cycle
195        ({FLD}RepCycle) which defaults to pkg/exf main "repeatPeriod".
196    o verification/lab_sea:
197      - update AD results of primary test and noseaicedyn test after switching
198        to new version of TAF (5.3.13 vs 5.3.2 before); agreement with gradient
199        check stays about the same.
200    o pkg/exf:
201      - fix bug in exf_zenithangle.F for cases select_ZenAlbedo > 0 with useCAL=T.
202      - exf_check: MAX_LAT_INC need only be "loc_nlat-1", not equal to loc_nlat
203    o pkg/bling, USE_EXFCO2 code:
204      - add parameter "apco2RepCycle" (set to pkg/exf "repeatPeriod" by default);
205      - update calls to EXF S/R (use new version: EXF_INIT_FLD & EXF_SET_FLD).
206    o pkg/exf:
207      - rename S/R EXF_INIT to EXF_INIT_VARIA ;
208      - add arguments: fldName (for debug msg) and fldRepeatCycle (set to
209        repeatPeriod) to S/R EXF_SET_UV and to S/R EXF_SET_GEN (renamed EXF_SET_FLD)
210        and update calls in pkg/exf calling S/R (exf_getffields.F & exf_getclim.F) ;
211      - add argument: fldName (for debug msg) to S/R EXF_INIT_GEN (renamed
212        EXF_INIT_FLD) and update calls in exf_init_varia.F
213      - For now, for backward compatibility, keep a simplified version of S/Rs
214        EXF_SET_GEN & EXF_INIT_GEN in file exf_set_gen.F
215      - add and pass new arguments: fldName (for debug msg) and fldRepeatCycle
216        to S/R EXF_GetFFieldRec ; update calls in pkg/obcs/obcs_exf_load.F
217    o tools/genmake2:
218      - replace "bc -l" (only used once) by "expr" (already used).
219    o verification/global_ocean.cs32x15:
220      - turn off pkg/cal (useCAL=F) in secondary FWD exp. "icedyn".
221        Note: exf setting (data.exf) can be compared to other exf secondary exp
222        "seaice" (kept with useCAL=T) which has same time dependent forcing.
223    
224    checkpoint66d (2017/02/13)
225    o pkg/exf:
226      - remove setting of useCAL=T when using pkg/exf (useEXF=T); add warning
227        early on (in packages_boot.F) to stress this change in pkg setting.
228      - In (most) verification exp. that use pkg/exf, add useCAL=.TRUE. to data.pkg
229    o model/src:
230      - move call to ecco_phys to end of time step; this may induce minor
231        cost function changes by shifting time averages by one time step
232        for some variables; this revision resulted in changed adjoint results
233        in MITgcm_contrib/verification_other/global_oce_cs32
234    o pkg/exf:
235      - Change EXF_READ_EVAP to only activate code within #ifdef ALLOW_ATM_TEMP ;
236        this prevents to read evap when ALLOW_ATM_TEMP is undef and other fields,
237        e.g. precip, are not available.
238    o pkg/flt:
239      - flt_init_varia.F: use pickupSuff if specified
240      - add code (within #ifdef DEVEL_FLT_EXCH2) and test case as a first,
241        intermediate, step towards completing pkg/exch2 support within pkg/flt;
242        ifdef DEVEL_FLT_EXCH2 then:
243        - flt_init_fixed.F: comment out stop
244        - flt_exch2.F: conserve ipart, jpart (grid coordinates)
245        - exch2_recv_get_vec.F: transform ipart, jpart (grid coordinates)
246        - flt_mapping.F: attempt to fix longitude diagnostic near date-line
247        - flt_init_varia.F: hack initialization (for testing purposes w. LLC90)
248    o tools/genmake2 & pkg/pkg_depend:
249      - define new type of pkg dependency rule ("=pkg_x"), less strict than
250        the "+" rule, that add the dependent pkg (pkg_x) unless it's disabled
251        (-pkg_x in packages.conf).
252      - change pkg/exf dependency rule from "exf +cal" to "exf =cal";
253      - add "+cal" to dependency list of pkg/ecco (needed to compile).
254      - simplify FWD experiment "offline_exf_seaice" by removing pkg/cal.
255    o utils/matlab:
256      - adding ocean_basin routines for defining basin masks.
257    o pkg/exf:
258      - new S/R EXF_GETFFIELD_START replacing EXF_GETFIELD_START, but with more
259        arguments, allowing to check (and stop) if parameter setting of
260         {FLD}startdate1 & date2 and of {FLD}StartTime are consistent with
261        useCAL= T or F. For now, kept a simplified version of EXF_GETFIELD_START
262        for backward compatibility.
263      - change accordingly calls in exf_init_fixed.F + default {FLD}StartTime in
264        exf_readparms.F ; apply same changes to pkg/icefront (for SGRunOff field).
265    o pkg/bling (USE_EXFCO2 code):
266      - fix missing setting of apco2StartTime according to apco2startdate1 & date2
267        by adding a call to S/R EXF_GETFFIELD_START.
268    o pkg/exf:
269      - allows to compile without pkg/cal (but disabled by current dependency
270        rules, i.e., default "pkg/pkg_depend"). Minimal changes to enable to
271        run with useCAL=F ; this involves setting directly {FLD}StartTime instead
272        of {FLD}startdate1 & date2 ; consistency check not yet coded.
273    o verification/global_ocean.cs32x15:
274      - fix all data.exf for a shift of 1 day in all field startdate1 so that it now
275        corresponds to middle of 1rst month; update outputs (2 fwd + 3 adm + 3 tlm).
276    o pkg/exf:
277      - allow to use EXF_ZENITHANGLE without pkg/cal + simplify (saving some
278        calculations); change FWD experiment global_ocean.cs32x15
279        (#define ALLOW_ZENITHANGLE) to test/check that this code compiles.
280    o pkg/exf:
281      - In preparation for addition to NAMELIST, rename internal (_RL) parameter
282         {FIELD}startdate to {FIELD}StartTime
283        Note: new name also fit better the content, i.e, a start time in second.
284    o eesupp/src:
285      - add 1 argument to S/R EEBOOT & EEBOOT_MINIMAL for interface with ESMF
286    o pkg/exf:
287      - add option ALLOW_READ_TURBFLUXES (and corresponding set of parameters)
288        to allow to read-in Sensible & Latent Heat flux ;
289      - simplify pkg/exf main options:
290        1) move small piece of code (case ALLOW_ATM_TEMP undef) out of
291           exf_bulkformulae.F into exf_wind.F so that exf_bulkformulae.F is
292           compiled only when both ALLOW_ATM_TEMP & ALLOW_BULKFORMULAE are defined;
293        2) make call to EXF_RADIATION and to EXF_WIND independent of CPP option
294           ALLOW_BULKFORMULAE which now only applies to S/R EXF_BULKFORMULAE ;
295        3) improve options documentation in EXF_OPTIONS.h.
296    o pkg/ecco:
297      - cost_gencost_customize.F,ecco.h,ecco_phys.F,ecco_readparms.F, and
298        ecco_summary.F: add passive tracer cost functions to gencost;
299        m_ptracer and m_boxmean_ptracer
300    o pkg/ctrl:
301      - ctrl_map_forcing.F: pass myIter and myTime to ctrl_map_forcing as input
302        parameters; move myIter .EQ. nIter0 inside ctrl_map_forcing; add to list
303        of implemented gentim2d contol parameters: xx_qnet, xx_empmr, xx_qsw,
304        xx_sst, xx_sss, xx_pload, xx_saltflux, xx_fu, xx_fv, xx_fe, xx_fn
305    o model/src:
306      - forward_step.F: pass myIter and myTime to ctrl_map_forcing as input
307        parameters; move myIter .EQ. nIter0 inside ctrl_map_forcing
308    o pkg/exf:
309      - exf_getffields.F: add to list of implemented gentim2d contol parameters:
310        xx_lwflux, xx_swflux, xx_evap, xx_apressure, xx_areamask
311    
312    checkpoint66c (2017/01/19)
313    o verification:
314      - add new option "-src" to testreport to only produce source code (*.f),
315        including taf output src code (if using '-adm'/'-tlm' option).
316    o pkg/exf:
317      - add saltflx :: Net upward salt flux in psu.kg/m^2/s
318    o pkg/diagnostics:
319      - add run-time variable diagMdsDir to specify a subdirectory for
320        diagnostic output when mds is being used and mdsioLocalDir is not.
321    o pkg/mnc:
322      - mnc_utils.F: edit stop message
323    o pkg/autodiff:
324      - autodiff_ini_model_io.F: PRINT_MESSAGE, clean-up comments, add _*_MASTER,
325        add HAVE_SYSTEM bracket around system call to mkdir
326    o pkg/profiles:
327      - profiles_findunit.F, profiles_init_fixed.F, profiles_interp.F,
328        profiles_readparms.F: call ALL_PROC_DIE before 'stop'
329      - profiles_ini_io.F: use PRINT_MESSAGE, clean-up comments, add _*_MASTER,
330        add HAVE_SYSTEM bracket around system call to mkdir
331    o pkg/smooth:
332      - smooth_filtervar2d.F, smooth_filtervar3d.F: call ALL_PROC_DIE before 'stop'
333      - smooth_init2d.F, smooth_init3d.F: move print statements to readparms
334      - smooth_readparms.F: add cleaner print statements from smooth_init?d.F
335    o pkg/exf:
336      - check: count errors and stop cleanly at the end (call to ALL_PROC_DIE);
337        issue error message when climsst_interpMethod.GT.0 and climsst_lon_inc > 500
338        generalize tests on interpMethod, nlat, and lon_inc to all exf variables.
339      - summary: skip detailed field report if not used (empty file-name).
340    o tools/xmakedepend:
341      - In case line editor "ed" is missing, switch to "sed" command to clean-up
342        Makefile from previous dependencies (anything after "# DO NOT DELETE" line).
343    o pkg/exf:
344      - change definition of "hflux" input file to always include Short-Wave;
345        this is now consistent with hflux computation (if using bulk-formulae)
346        and hflux diagnostic & documentation (in EXF_FIELDS.h).
347    
348    checkpoint66b (2016/12/01)
349    o model & momentum pkgs:
350      - implement fully implicit bottom friction combined with implicit surf.
351        pressure, for now, only in hydrostic formulation:
352        + to use: compile with #define ALLOW_SOLVE4_PS_AND_DRAG in CPP_OPTIONS.h
353          and run with selectImplicitDrag=2 ;
354        + currently missing diagnostics of bottom drag and vert. viscosity tendency;
355      - partial implicit time-stepping (bot. friction + vert. visc first, then
356        surf. press) corresponding to selectImplicitDrag=1 should be applicable
357        to NH formulation but not available until we solve for surf. pressure
358        increment (instead of full etaN).
359      - change exp. global_ocean.cs32x15.thsice to test implicit bottom drag
360        with implicit vertical viscosity.
361    o pkg/seaice: add linear remapping scheme (Lipscomb 2001) to ITD model
362      - this is a first version that includes many regularisations that may
363        not all be necessary, to be sorted out,
364      - turned on by runtime parameter SEAICEuseLinRemapITD (true by default)
365      - change one verification experiment in seaice_itd to use and test new code
366      - seaice_growth: catch a case where the argument of log can be zero
367        or smaller (important for code stability)
368    o model/src:
369      - modify SOLVE_DIAGONAL_LOWMEMORY version of solve_tridiagonal.F
370        & solve_pentadiagonal.F to enable to re-used inverse matrix for solving
371        similar A.X'=Y' system (with same matrix A) in subsequent calls;
372        switch based on errCode (In/Out) argument value; in calling routines,
373        initialise errCode before first call.
374    
375    checkpoint66a (2016/10/18)
376    o pkg/bling:
377      - BLING package now loads in atmospheric pCO2 file using exf package routines
378        Enable with #define USE_EXFCO2 in BLING_OPTIONS.h
379    o model/src & pkg/ptracers:
380      - with INCLUDE_IMPLVERTADV_CODE defined, also call MOM_U,V_IMPLICIT_R &
381        GAD_IMPLICIT_R (instead of IMPLDIFF) when just implicitViscosity and
382        implicitDiffusion (respectively) are used (even without momImplVertAdv
383        or temp,salt,PTRACERS_ImplVertAdv).
384    o model/src & generic_advdiff:
385      - add parenthesis in main diagonal calculation of implicit vertical
386        diffusion matrix (impldiff.F & gad_implicit_r.F).
387        This affects results at machine truncation level; update output of many
388        verification experiments (31 fwd ; 10 adm ; 8 tlm ; 3 oad).
389    o pkg/mom_commom & generic_advdiff:
390      - add deep atmosphere and anelastic scaling factor in implicit vertical
391        advection routines (mom_u,v_implicit_r.F & gad*_impl*_r.F).
392    o model/src:
393      - remove few unnecessary temp array copies in solve_tridiagonal.F
394        & solve_pentadiagonal.F
395    
396    checkpoint65z (2016/09/28)
397    o pkg/seaice: fix multithreading for seaice_fgmres.F
398      - remove unecessary variables from common blocks
399      - use extra dimension MAX_NO_THREADS for all variables of the Krylov space
400        basis, that are stored in commom blocks (including integer variable i1)
401      - clean up code a little by removing commented lines that refer to
402        original code
403      - turn on multi-threaded test for experiment offline_exf_seaice.dyn_jfnk.
404    o MITgcm manual:
405      - add uptodate pkg/ecco documentation to the manual (section 8.1; ecco.tex),
406        preliminary documentation for generic controls (8.3; ctrl.tex),
407        a placeholder for smooth (8.4; smooth.tex), and comment out the deprecated
408        ecco_costfunction.tex
409    o pkg/ecco:
410      - update and cleanup list of CCP options
411      - re-assign gencost_mask to specify masks rather than gencost_errfile; 'c'
412        is now always passed to cost_generic; gencost_mask is now MAX_LEN_FNAM
413      - add checks that retired run-time options are not used, and in relation
414        to gencost_mask and gencost_errfile
415      - finish deprecating gencost_scalefile, gencost_smooth2Ddiffnbt, and
416        gencost_nrecperiod
417      - fix m_eta computation for virtual salt flux case
418      - add m_horflux_vol case (selected via gencost_barfile) that computes
419        transports via cost_gencost_boxmean (gencost_flag=-3)
420      - use gencost_flag more systematically (i.e., avoid using gencost_name)
421        for code switches (aside from physical variable selection)
422    o pkg/seaice: make seaice_fgmres.F fit for multithreading; this first
423      attempt appears to be a bit of a hack and my need some repair down the road
424    o pkg/exf:
425      - interpolation near South Pole: fix criteria on input field latitude.
426    o pkg/icefront & pkg/exf:
427      - move setting of icefront Sub-Glacial RunOff forcing (currently unused)
428        from pkg/exf (read from data.exf) to pkg/icefront (read from data.icefront)
429    o pkg/exf:
430      - replace CPP option ALLOW_EXF_OUTPUT_INTERP with run-time parameter
431        "exf_output_interp" (in namelist: EXF_NML_04); change output file name
432        (add suffix "_out" instead of a prefix); keep same record number as in
433        input file but always write record 1 first (to avoid a STOP in I/O S/R).
434        Change output file content by writing interpolated field before applying
435        land-sea mask (helpful for debug).
436      - 2 compon. vector interpolation with rotation: apply scaling factor on
437        each compon. (Eastward and Northward) just before rotation.
438    o pkg/bling:
439      - Cleaned package. Removed not needed code and comments.
440      - adjoint example now works
441        (MITgcm_contrib/verification_other/global_oce_biogeo_bling/code_ad)
442    o pkg/ptracers:
443      - add Bruno Deremble's code to complete the linear surface correction
444        for tracer conservation;
445      - enabled for individual ptracers by PTRACERS_linFSConserve(iTr)=.TRUE.
446    
447    checkpoint65y (2016/07/29)
448    o pkg/debug (stats):
449      - change GLOBAL_SUM to GLOBAL_SUM_TILE (result independent of tile to
450        proc/thread mapping);
451      - fix Min & Max for case where 1 thread has only empty tiles;
452      - use RL variable to count number of wet grid points (with big domain,
453        can be too large to fit into integer*4).
454    o pkg/monitor:
455      - use RL variable to count number of wet grid points (but used only for del2)
456      - add new routine to compute Advective CFL within tracer time-stepping with
457        writing delayed until next monitor output.
458    o pkg/obcs:
459      - fix bug in OBCS_BALANCE_FLOW (OBCS_balanceFacN misspelled OBCS_balanceFacW)
460    o pkg/cal:
461      - calandar-dump: treat case myTime < timePhase in the same way as in
462        eesupp/src/diff_phase_multiple.F (when not using calandar-dump).
463    o pkg/dic & seaice:
464      - fix compilation of ocean component for coupled atm+ocn model with
465        seaice dynamics & dic.
466    
467    checkpoint65x (2016/06/11)
468    o add a license text file in main MITgcm tree.
469    o added pkg/bling:
470      - intermediate complexity biogeochemical model
471      - see bling_description.txt for details
472      - verification experiment is global_oce_biogeo_bling (for now, in
473        Contrib/verification_other/); tested daily on baudelaire with gfortran.
474      - add entry point in pkg/gchem for new pkg "bling".
475    o pkg/seaice: fix tensile stength computation
476      - replace global field tensileStrength by tensileStrFac
477      - tensileStrFac can be computed once in S/R seaice_init_varia
478      - fortunately that does not affect any verification results
479    
480    checkpoint65w (2016/05/12)
481    o pkg/ctrl/ctrl.h: fix a comma in common block list, so that code compiles
482         with ECCO_CTRL_DEPRECATED defined
483    o verification/global_ocean.cs32x15:
484      - change secondary test "viscA4" to also test "selectP_inEOS_Zc=3"
485        with "selectNHfreeSurf=1".
486    o model/src (non-hydrostatic free-surface):
487      - More "natural" expression of NH free-surface term (case selectNHfreeSurf=1):
488        was: tmpSurf/(1+tmpSurf); changed to: 1/(1+Gamma) with Gamma=1/tmpSurf.
489      - Calculate surface vertical velocity after 2-D solver adjustment (accounts
490        for EmPmR if RealFreshWaterFlux); used in RHS (cg3d_b) if exactConserv
491        and used to compute dPhiNH (in post_cg3d.F) if selectNHfreeSurf=1.
492        This fixes EmPmR contribution when selectNHfreeSurf=1 & RealFreshWaterFlux.
493      - Update output (changes at machine truncation level) of verification exp:
494        exp4 (11 digits for cg2d), global_ocean.cs32x15.viscA4 (11.d),
495        short_surf_wave (13.d) and tutorial_deep_convection.smag3d (12.d).
496    o pkg/seaice: ITD code
497      - fix picking up from a single category model by initialising
498        heff/area/hsnowITD = 0. in seaice_itd_pickup.F
499      - split a long warning message in seaice_check_pickup.F into two lines,
500        because NEC SX-ACE cannot deal with the long line.
501    o model/src:
502      - fix missing dPhiNH in pressure_for_eos.F (case: selectP_inEOS_Zc=3)
503    o pkg/seaice:
504      - add missing checks for SEAICE_ALLOW_KRYLOV and SEAICE_ALLOW_BOTTOMDRAG
505    o pkg/seaice:
506      - add basal stress as parameterisation for grounding ice
507        following Lemieux et al. (2015)
508      - turn on by setting new parameter SEAICEbasalDragK2 to a value
509        larger than 0. Lemieux et al. (2015) recommend 15.
510      - The adjoint complains with extra recomputations so there is also a
511        new cpp-flag SEAICE_ALLOW_BOTTOMDRAG that is undefined by default in
512        order to postpone the problem
513      - compile the new code in lab_sea
514    o verification/halfpipe_streamice:
515      - update both TAF and OpenAD adm output (machine truncation differences)
516    
517    checkpoint65v (2016/04/08)
518    o verification/advect_xz:
519      - increase overlap size from 3 to 4 and add new secondary test for PQM
520        advection scheme (with mono & wino limiter).
521      - change main exp. to test PPM (with weno limiter) adv.scheme on Temp.
522    o model/src:
523      - new parameters "top_Pres" & "seaLev_Z" (replacing Ro_SeaLevel and recently
524        added phi0Ref) to set vertical axis origin and phiRef origin;
525        keep Ro_SeaLevel for backward compatibility (with a warning).
526       According to coordinate and fluid type:
527        OCN in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(1), @ the top)
528        ATM in Z: top_Pres(Ref) (=rhoConst*PhiRef(1)), seaLev_Z (=rF(Nr+1) @ bottom)
529        OCN in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(Nr+1)/g, @ the top)
530        ATM in P: top_Pres (=rF(Nr+1)), seaLev_Z (= PhiRef(1)/g, @ the bottom)
531      - remove Ro_SeaLevel from ATM experiment parameter files;
532      - in tutorial_global_oce_in_p, remove Ro_SeaLevel and set top_Pres to the
533        complement; update output.txt (changes at machine truncation level).
534    o pkg/seaice/seaice_evp.F
535      - simplify computation of deltaZ and zetaZ to simple averaging following
536        Bouillon et al. (2013). This removes a lot of code, but also changes
537        verification experiment lab_sea.hb87 -> updated
538    
539    checkpoint65u (2016/03/14)
540    o pkg/generic_advdiff:
541      - from Darren: add PPM and PQM advection schemes (number 40-42 and 50-52)
542        with 2 types of limiter (see: Engwirda & Kelley, submit. to JCP);
543        Note (from Darren): unlimited PPM/PQM scheme (40 & 50) are just for
544        testing and not for actual use.
545    o model/src:
546      - add parameter "phi0Ref" to specify reference [pressure/geo] potential at
547        origin r = rF(1);
548      - add options (parameter selectP_inEOS_Zc) to select which pressure to use
549        in EOS for height coordinate: enable to include NH Pressure or to use
550        more accurate pressure vertical profile; options not linked to EOS type
551        (as previously, e.g., JMD95P/JMD95Z) but set default according to EOS type;
552      - start to implement variable gravity (along vertical): for now, only with
553        z-coords (not even z*).
554      - add Ideal Gas equation of state for height coordinate.
555      - update OpenAD output (affected at machine truncation level) of exp:
556        global_ocean.90x40x15, OpenAD (std) and tutorial_global_oce_biogeo.
557    o pkg/exf:
558      - add ALLOW_EXF_OUTPUT_INTERP cpp switch to output the result
559        of exf interpolation (before any rescaling, rotation or interpolation
560        to velocity point) for each field that gets loaded from file. This option
561        identically mimics the input file organization (e.g. record numbers in year
562        by year input files) besides the change in horizontal grid.
563      - add rotateStressOnAgrid run-time switch so that wind stress fields
564        can be provided on the A-grid in zonal/meridional direction and
565        rotated on the fly. This only applies to the case when the exf
566        interpolation is off and rotateStressOnAgrid is false by default.
567    o model/src:
568      - rename internal parameter "useDynP_inEos_Zc" to "storePhiHyd4Phys" (since
569        it's also used with pkg/atm_phys) and add few more parameters (but still
570        inactive, src code yet to come)
571    
572    checkpoint65t (2016/02/10)
573    o pkg/atm_phys:
574      - from Ruth Geen: add optical depth dependence on CO2 concentration.
575    o model/src:
576      - fix vertical inter/extra-polation of density factor rhoFacF (for anelastic)
577        for the case setCenterDr=T (delRc set from "data"); add output of rhoFacC&F.
578        Update output of exp. deep_anelastic (changes at truncation level).
579    o tools:
580      - add a hack in "remove_comments_sed" (used only with TAF) for recent
581        version of OpenMPI (shipped with FC.23): comment out the new header
582        file "mpif-sizeof.h" which causes problems to TAF.
583    o pkg/seaice:
584      - change the termination criterion so that maxits (SEAICElinearIterMax)
585        has an effect
586      - unify iteration parameters for implicit solvers (JFNK and Picard)
587        SEAICEnonLinIterMax replaces SEAICEnewtonIterMax/NPSEUDOTIMESTEPS
588        SEAICElinearIterMax replaces SEAICEkrylovIterMax/SOLV_MAX_ITER
589        SEAICEpreLinIterMax replaces SOLV_MAX_ITER in preconditioner
590        SEAICEpreNL_IterMax replaces NPSEUDOTIMESTEPS in preconditioner
591        SEAICEnonLinTol     replaces JFNKgamma_nonlin
592      - remove S/R SEAICE_FGMRES_DRIVER and put content into S/R SEAICE_JFKN
593      - add new Picard-Krylov solver, compile with SEAICE_ALLOW_KRYLOV and
594        use with SEAICEuseKrylov
595    o pkg/seaice/seaice_lsr.F
596        fix small bug: replace zetaZ by zetaZloc in S/R seaice_lsr_rhsu/v; only
597        relevant if SEAICEuseStrImpCpl=T, and even then it does not seem to have
598        an effect.
599    o pkg/seaice: add two new parameters
600      - SEAICEuseLSR to simplify the logic in seaice_dynsolver (this
601        parameter is not in any namelist)
602      - SEAICEusrPicardAsPrecon to allow s/r seaice_lsr to be used as
603        a preconditioner for the non-linear Newton iteration of the JFNK
604        solver
605    o pkg/seaice/seaice_lsr.F: replace 1./SEAICE_deltaTdyn with recip_deltaT,
606      affects some experiments at truncation level:
607      - global_ocean.cs32x15.icedyn (11 digits),
608      - global_ocean.cs32x15.seaice (11 digits),
609      - seaice_itd (12 digits), seaice_itd.lipscomb07 (12 digits) -> update
610      - also update global_ocean.cs32x15 adjoint and tangent-linear results
611    o pkg/salt_plume & pkg/thsice:
612      - for coupled  set-up with pkg/thsice in ATM and pkg/salt_plume in OCN,
613        connect salt_plume flux to ATM-OCN coupling pkgs interface:
614       a) in ATM: also cumulate salt-plume flux in S/R THSICE_SALT_PLUME (for
615         export to coupler interface) even without compiling pkg/salt_plume ;
616       b) in OCN: apply coupler salt-plume flux to pkg/salt_plume field
617         (saltPlumeFlux) just before exch call, in S/R SALT_PLUME_DO_EXCH.
618    o pkg/dic:
619      - use the updated seaice fraction (from seaice pkgs) for DIC forcing
620        instead of the previous time-step value ; done in new S/R DIC_FIELDS_UPDATE
621        called from the top of dic_biotic_forcing.F (instead of in DIC_FIELDS_LOAD);
622      - move also update with values from ATM-OCN Coupler in the same new S/R
623        (previously done in ocn_apply_import.F).
624    o tools/adjoint_options:
625      - specify explicitly "-f77" or "-f90" in default ad-optfile since TAF (default)
626        has been changed on Jan 14, 2016.
627    o pkg/ggl90:
628      - add alternative discretisation of vertical shear (off by default), to
629        compute the mean (@ grid-cell center) of vertical shear compon instead of
630        vertical shear of mean flow (@ grid-cell center).
631      - add correct parenthesis in ALLOW_GGL90_SMOOTH code to get the same truncated
632        results on adjacent faces of cubed-sphere grids; this fix the restart.
633    o pkg/atm_compon_interf:
634      - skip time-ave over cpl_atmSendFrq of Sea-Level Pressure (atmSLPr) and just
635        pass last value, stored directly before export to CPL ;
636        Note: this affects results of Coupled set-up where OCN uses useImportSLP=T
637      - remove atmSLPr from pickup files (no longer needed for restart)
638    
639    checkpoint65s (2016/01/13)
640    o eesupp & genmake2:
641       - first check for Function ETIME and, if it fails, then check for subroutine
642         ETIME and consistent output; use the appropriate version in timers.F
643    o model/src:
644      - to check restart test, add option to apply EXCH to U,V earlier, just before
645        integr_continuity; turned off by default.
646    o pkg/dic:
647      - remove CPP option USE_ATMOSCO2 (not needed)
648    o tools/tst_2+2:
649      - try to ignore difference between +0 and -0 in binary file, causing test
650        to fail for no good reason.
651    o eesupp & genmake2:
652      - put back modif from Jinxuan Zhu - change etime fct call to S/R call -
653        but also check (in genmake2) that test runs and returns meaningful results.
654    o coupler pkgs:
655      Finish implementation of optionally-exchanged variable switches (started on
656       Nov 12) with addition of few more exchanged fields, including 2-way exchange
657       of pkg/thsice vars to allow to use seaice dynamics (from pkg/seaice) & seaice
658       advection in OCN component; this requires sequential coupling.
659      coupler (pkg/atm_ocn_coupler):
660      - add argument msgUnit and iter number to CPL_SEND/RECV_ATM/OCN_FIELDS
661        routines (useful for debug).
662      - only export/import optionally exchanged fields (RunOff, seaice, Salt-Plume
663         flux, DIC fields) if corresponding switch is ON.
664      - add option to export RunOff to OCN (to use for DIC river input)
665      - add 2-way thSIce vars exchange; check for consistent cpl_sequential setting.
666      components (pkg/atm_ & ocn_compon_interf):
667      - to save memory space in ATM & OCN comp: add some #ifdef ALLOW_${PKG} around
668        optionally exchanged fields; add a check & stop in cpl_readparms.F.
669        ATMCPL.h: ALLOW_LAND for RunOff, ALLOW_THSICE for seaice, ALLOW_AIM for CO2;
670        OCNCPL.h: ALLOW_SALT_PLUME, ALLOW_DIC for DIC, ALLOW_THSICE for 2-W thsice.
671      - rename:   fracIce     -> sIceFrac_cpl (<- match coupler var name)
672        + in ATM: fracIceTime -> sIceFracTime ; seaIceTime -> sIceMassTime.
673      - add 2-way thSIce vars exchange ; add Salt-Plume flux ; add RunOff in OCN.
674      - hold in common block coupler optionally-exchanged variable switch
675        and set default "useImportXXX" accordingly; + check & stop if inconsistent.
676      - add diagnostics for all imported fields from coupler (in both OCN & ATM);
677        this is intended to replace the OCN cplFldtave.* output files (not updated
678        to contain new additional exchanged fields).
679    o pkg/dic:
680      - fix an other bug (also from 2014/08/30) in dic_atmos.F, in dic_int1=3 code.
681    o pkg/thsice:
682      - when coupled to ATM (useCoupler) with thSIce_skipThermo=T, skip reading
683        and writing of thsice pickup files.
684    o pkg/atm_compon_interf:
685      - move all field individual export-call out of cpl_export_import_data.F
686        into new S/R ATM_EXPORT_FIELDS
687    o pkg/atm_compon_interf:
688      - store state variables (for now, only thSIce fields) just before beeing
689        exported (in cpl_export_import_data.F, like on ocean side) instead of from
690        atm_store_my_data.F like all exported fluxes.
691      - new version of pickup_cpl: write field names into meta file and read meta
692        file to find field postion in pickup. Also only write/read fields meeded for
693        restart (same logic as main pickup file ; also using pickupStrictlyMatch)
694    o pkg/dic:
695      - fix bug (added on 2014/08/30) in dic_atmos.F for the case dic_int1= 2 or 3.
696    o pkg/seaice: add new parameter SEAICEpressReplFac to choose between
697        pressure replacement method (=1., default) or original Hibler (1979) (=0.)
698        value can be from domain [0,1] to average between the two methods
699    o pkg/atm_phys:
700      - allow to provide 2-d map of albedo and mixed-layer depth from files (but
701        hold fixed in time).
702    
703    checkpoint65r (2015/12/21)
704    o pkg/seaice:
705        fix bug in tridiagonal solvers for SEAICE_OLx/y>0, this affects the JFNK
706        solver (offline.dyn_jfnk) and global_ocean.cs32x15.seaice -> updated
707    o pkg/seaice:
708      - fix a bug in computing areaS in (J-J -> J-1) that affects runs
709        when SEAICEscaleSurfStress=.TRUE.,
710      - apply areaW and areaS in S/R seaice_calc_lhs
711    o pkg/atm_phys:
712      - add diagnostics for 3-D, Nr+1 levels diagnostics of radiative fluxes
713        (shortwave & longwave, net & downward) and diagnostics of temp. tendency
714        for individual contribution (convection, LSC cond, radiation)
715      - add Ruth Geen etal, GRL 2016, radiation options (see paper supp.
716        information); activated with: solar_exponent=0. and wv_exponent=-1.
717    o pkg/ggl90:
718      - within IDEMIX add upper limit for horizontal group velocity to
719        avoid instability problems in the explicit horizontal diffusion term for
720        long time steps or high resolution
721    o pkg/diagnostics:
722      - simplify setting of local-array size in diagstats_output.F: uses "numLevels"
723        (from DIAGNOSTICS_SIZE.h) to allow to write out more than Nr levels.
724    o testreport:
725      - remove "-v" (verbose option) in default mpirun command.
726    o pkg/seaice/seaice_growth:
727      - catch potential division by zero in ITD code, does not change
728        verification results
729    o pkg/ecco:
730      - retire old codes to the Attic. The calls to retired functions are
731        left in a commented form in case they ever need to be re-activated.
732      - ecco_check.F: issue warning if any old CPP option is
733        defined that corresponds to retired codes -- then stop.
734    o pkg/atm_compon_interf:
735      - change seaice fraction (use for OCN dic surf.flux) stored and sent to
736        coupler: use last time-step value instead of average over cplSendFrq_iter
737        time-step, similar to what is done for seaIceMass.
738        This will affect results (pkg/dic) of coupled ATM-OCN+dic set-up.
739    o eesupp & genmake2:
740      - from Jinxuan Zhu: change etime fct call to S/R call (fix gfortran ETIME);
741        <= remove until a fix is found for some ifort version on ia32 machine.
742    o pkg/seaice/seaice_evp:
743      - refine residual computation
744    
745    checkpoint65q (2015/11/18)
746    o pkg/seaice/seaice_evp:
747      - fix residual computations so that they no longer affect the actual
748        simulation code
749      - fix seaice_readparams to be able to actually set new parameters
750        SEAICEaEVPcStar and SEAICEaEVPalphaMin, also fix logic a little
751    o model/src:
752      - fix wrong truncation (single prec) from "FLOAT" function in expressions
753        like: deltaT*FLOAT(myIter) when myIter is large:
754         a) replaced by DFLOAT (if not seen by TAF);
755         b) remove "FLOAT" and use implicit type conversion (if seen by TAF).
756    o pkg/aim_v23:
757      - write/read the expected CO2 pickups (from S/R AIM_DO_CO2): fix reading
758        when pickupSuff is set ; do write rolling pickups + at the end of the run.
759    o pkg/atm_ocn_coupler + ocn_compon_interf:
760      - in prep for using pkg/seaice Dyn in coupled set-up, implement sequential
761        coupling option-1: ATM -(cpl)-> OCN and then OCN -(cpl)-> ATM ;
762        add corresponding call in DO_OCEANIC_PHYS.
763    o coupler pkgs:
764      Start a new way to set-up optionally-exchanged variables (previously, only
765       there for exchange_DIC): switch on/off from 1 place, at run-time, in coupler
766       data.cpl (new) instead of at compile time in ATMIDS.h & OCNIDS.h ;
767       send switch to ATM & OCN compon before reading their own "data.cpl" (so that
768       compononent param default can be set accordingly).
769      Note: this new switch (cpl_exchange_[xxx]) is not a per variable switch
770       but rather applies to a group a fields (going both ways like for DIC)
771       and corresponds to an option of coupling config.
772      coupler (pkg/atm_ocn_coupler):
773      - change parameter file from "data" to "data.cpl" (in cpl_read_params.F),
774        and read namelist directly (without eessup S/R calls) instead of
775        in the very un-flexible old way, 1 param per line, in fixed order;
776      - add error-counter to track errors (e.g., missing "data.cpl") and to stop
777        cleanly in CPL_CHECK_CPLCONFIG
778      - add new coupling-exchange selectors (some not yet active) including
779        cpl_exchange_DIC (to set to 3 to replace atmCpl_exchange_DIC=T in ATMIDS.h
780                                             and ocnCpl_exchange_DIC=T in OCNIDS.h);
781      - add 2 new S/R (CPL_SEND_ATM/OCN_CPLPARMS) to send coupler-params to each
782        component ; called directly from coupler.F, after comp. registrations;
783      - rename few variable-ID names (in ATMIDS.h & OCNIDS.h):
784         atm/ocnSeaIceName --> atm/ocnSIceMassName ; atm/ocnFCO2Name ->
785          -> atm/ocnCO2FluxName ; atm/ocnWSpdName --> atm/ocnWindSpdName
786      components (pkg/atm_ & ocn_compon_interf):
787      - add ATM/OCN_CPL_OPTIONS.h in component pkgs and include the corresponding
788        CPP header file in all pkg source files.
789      - move checking of comp. configs out of cpl_exch_configs.F into new S/R
790        ATM/OCN_CHECK_CPLCONFIG;
791      - add error-counter to track errors (e.g., in "data.cpl") and to stop
792        cleanly in ATM/OCN_CHECK_CPLCONFIG;
793      - add new S/R CPL_IMPORT_CPLPARMS to import coupling-exchange selectors
794        from coupler ; called from initialise_fixed.F, after PACKAGES_BOOT and
795        before PACKAGES_READPARMS;
796      verification/cpl_aim+ocn/:
797      - update ATMIDS.h & OCNIDS.h (in shared_code) and use new parameter file
798        "data.cpl" for coupler (in input_cpl).
799    o eesupp/inc:
800      - change the MPI-global-sum default (in CPP_EEOPTIONS.h) to:
801        #define GLOBAL_SUM_ORDER_TILES (only affects MPI built of global_sum_tile.F)
802        to always cumulate tile local-sum in the same order (still uses
803        MPI_Allreduce like standard code).
804      - in verification experiment code, remove local CPP_EEOPTIONS.h_mpi files
805        that are now identical to standard version (in eesupp/inc).
806    o pkg/shelfice:
807      - add SHELFICETransCoeffTFile for initializing spatially varying
808        heat and salt transfer coefficients
809    o pkg/atm_compon_interf & ocn_compon_interf:
810      - combine into 1 (new) S/R CPL_EXPORT_IMPORT_DATA the two previous
811        S/R CPL_EXPORT_MY_DATA & CPL_IMPORT_EXTERNAL_DATA
812      - move bi,bj loops inside S/R OCN_STORE_MY_DATA
813    o pkg/atm_ocn_coupler:
814      - initialise to zero ATMVARS.h & OCNVARS.h arrays.
815    o pkg/rbcs:
816      - select RBCS-mask for Temp & Salt the same way as for pTracer ; this allows
817        to compile with maskLEN=1 when all tracers use the same RBCS-mask.
818      - add a short report (to STDOUT) about RBCS-mask settings.
819    
820    checkpoint65p (2015/10/23)
821    o pkg/seaice/seaice_evp.F: fix store directives and key computations, since
822        there is no adjoint test for EVP, we don't know what it does to the adjoint
823        solution, but at least there are no more recomputation warnings left
824    o pkg/seaice/seaice_evp.F: slight modification of averaging so that EVP stands
825        a chance of giving the same results as a fully converged VP (JFNK) solver
826    o tools/adjoint_options/adjoint_diva:
827      - fix bug (typo) in Tang-Linear FLAGS setting for MPI + DIVA
828    o pkg/streamice:
829      - spotted bug in streamice_driving_stress using dyG where should have been dxG
830    o pkg/exf:
831      - remove STOP statement that prevented to use wind or (wind-)stress
832        interpolation for constant-in-time forcing fields (wind/stress period = 0).
833    o pkg/seaice:
834      - replace SEAICE_EVP_USE_ADAPTATION by run time parameters, requires
835        5 additionals 2D fields and 6 new store directives
836      - change logic in seaice_readparms.F: EVP code can now be turned on in
837        various ways, setting SEAICE_deltaTev is no longer required,
838        alternatively set SEAICE_evpAlpha/Beta, SEAICEuseEVPstar, SEAICEuseEVPrev,
839        or SEAICEaEVPcoeff
840    o pkg/shelfice/shelfice_thermodynamics.F
841      - redefining uLoc/vLoc to u/v, instead of 2u/v
842    o pkg/seaice/seaice_evp.F: introduce "adaptive EVP" by Madlen Kimmritz
843      - this is an intermediate state of a truely converging EVP that has
844        the potential of outperforming implicit VP methods, I do not recommend
845        using it yet.
846      - for now, "adaptive EVP" is turned on by setting SEAICE_EVP_USE_ADAPTATION
847        and all parameters are hardwired
848      - for convergence it still requires very smooth regularisations, that means,
849        if SEAICE_DELTA_SMOOTHREG is defined, deltaCreg=deltaC+deltaMin, which is
850        different from the VP case with deltaCreg=sqrt(deltaC**2+deltaMin**2); also
851        specific averaging appears to be required, still subject to tuning
852      - still needs cleaning and I need to turn parameter into runtime parameters
853      - add code to compute and print residuals of iteration, compile with
854        defining ALLOW_SEAICE_EVP_RESIDUAL to enable it
855    o pkg/seaice/seaice_evp.F: fix a bug (factor of four in front of e12Csq)
856      that entered with r1.54 on Sep04, 2015, -> update results
857    
858    checkpoint65o (2015/09/14)
859    o pkg/mom_vecinv & mom_common:
860      - add deep-atmosphere geometry factor in mom_calc_visc.F + in routines
861        called from there.
862      - add anelastic and deep-atmosphere geometry factor in pkg/mom_vecinv ; this
863        allows to use Vector-Invariant form in deep atmos and anelastic formulation
864    o pkg/seaice: introduce fast ice parameterisation following Itkin et al. (2015)
865      and Koenig-Beatty+Holland (2012)
866      - two new parameters SEAICE_tensilFac and SEAICE_tensilDepth
867      - global 2D field tensileStrength, computed in seaice_calc_ice_strength
868      - requires an extra input argument for S/R seaice_calc_viscosities
869      - tensileStrength's depth dependence is different from Itkin et al. (2015)
870        (to be changed and played with, for now exponential)
871    o pkg/seaice: introduce new parameter SEAICEscaleSurfStress (default = .FALSE.)
872      - if TRUE scale ice-ocean and ice-atmosphere stress acting on sea ice
873        by AREA according to Connelly et al. (2004), JPO.
874      - For EVP and the LSR solver, the implicit part of the drag term is
875        the only non-zero term in the denominator when there is no ice (which
876        prevented running the model with zero ice-ocean drag). If
877        SEAICEscaleSurfStress = .TRUE., this results in a division by zero
878        (or zero main diagonals BU/BV) which need to be caught. A practical
879        consequence is that for open water, the momentum equation reduce
880        to trivially 0 = 0 + 0 (for EVP). For LSR, BU/BV are reset to 1, if
881        they happen to be zero, often leading to a non-zero solution over
882        open water.
883    o pkg/seaice: revise EVP code (seaice_evp.F) in preparation for a more
884        efficient EVP method.
885      - introduce area-weighted averages for e12 (analogously to
886        seaice_calc_viscosities.F); this totally changes lab_sea.hb87 (2 digits
887        remain, but also changing the order of terms in the previous average
888        changed the results as much) -> update experiment
889      - add SEAICE_DELTA_SMOOTHREG code
890      - disentangle computation of zetaC/deltaC and zetaZ/deltaZ, also for
891        TEM-code
892      - adjust loop bounds so that only required fields are computed
893      - add new averaging code for zetaZ/deltaZ (again similar to
894        seaice_calc_viscosities.F), inactive by default for now (will change
895        results again), but will replace old code eventually
896    o eesupp/src:
897      - add an other alternative for multi-proc GLOBAL_SUM (in global_sum_tile.F)
898        to always cumulate tile local-sum in the same order
899        (option #define GLOBAL_SUM_ORDER_TILES in CPP_EEOPTIONS.h).
900        Still uses MPI_Allreduce (like standard code) but on array of tiles
901        and should be faster than GLOBAL_SUM_SEND_RECV code.
902      - switch almost all verification experiments that use GLOBAL_SUM_SEND_RECV
903        (defined in CPP_EEOPTIONS.h_mpi) to GLOBAL_SUM_ORDER_TILES instead.
904      - add CPP_EEOPTIONS.h_mpi with GLOBAL_SUM_ORDER_TILES defined in 14 more exp.:
905         aim.5l_cs, cheapAML_box, deep_anelastic, dome, fizhi-cs-32x32x40,
906         fizhi-cs-aqualev20, fizhi-gridalt-hs, global_ocean_ebm, matrix_example,
907         natl_box, solid-body.cs-32x32x1, tutorial_advection_in_gyre,
908         tutorial_baroclinic_gyre and tutorial_held_suarez_cs.
909    
910    checkpoint65n (2015/07/29)
911    o pkg/thsice:
912      - add a warning when used with pkg/aim but without updating SST
913        (stepFwd_oceMxL=F & useCoupler=F & tauRelax_MxL<>-1 ).
914    o pkg/offline:
915      - change where Offline-Fields are loaded, from load_fields_driver.F to
916        directly within FORWARD_STEP, just after updating iter number and time;
917      - move setting of GM and KPP diffusivity out of OFFLINE_FIELDS_LOAD into new
918        S/R OFFLINE_GET_DIFFUS that is called towards the end of DO_OCEANIC_PHYS;
919       These changes allow:
920        a) to recover exactly on-line results using deltaToffline=deltaTClock,
921        tested (using offlineIter0= nIter0 -1 and offlineTimeOffset= -deltaT/2)
922        both with Lin & Non-Lin Free-Surf, both with staggerTimeStep & synchronous
923        time-step, both with GM & KPP files and with recomputing these fields;
924        b) no needs to switch on staggerTimeStep anymore;
925        c) simplify rescaling of offline horiz. velocity with Non-Lin Free-Surf.
926      - update output of experiment tutorial_dic_adjoffline (only 3 digits left).
927    o pkg/offline:
928      - change (rarely used) offset-iteration parameter to an offset time (in s):
929        can easily recover previous offset-iter effect by setting offset-time
930        (offlineTimeOffset) to offset-iter x deltaToffline;
931      - do not turn-off Temp & Salinity surface relaxation when using KPP (used
932        in KPP as part of surface buoyancy forcing) in offline run.
933      - fix ptracers KPP non-local term in the case where KPP is re-computed.
934    o OpenAD
935      - Adding preliminary ggl90 test to OpenAD verification.
936        Config. with ggl90 currently diverges after 64 time steps
937        so will need more work to become more stable
938      - Adding preliminary kpp test to OpenAD verification.
939        required small tweakes in kpp_routines.F
940      - Merge and update from Krishna Narayanan's contrib area:
941        * Add one variable for preliminary OpenAD DIVA
942        * Add replacement time-stepping for OpenAD DIVA
943        * genmake2 flag -diva (but only for OpenAD; preliminary)
944        * required modifs for OAD_support
945        successful preliminary test for tutorial_global_oce_biogeo/
946    o pkg/seaice:
947      - initialise deltaC in seaice_lsr, cosmetic changes in seaice_lsr
948      - add cpp-flag SEAICE_DELTA_SMOOTHREG for option of regularising
949        delta with a smooth function in s/r seaice_calc_viscosity
950        (no effect on EVP)
951      - rename local suffix "sqr" into "sq" for more consistent variable names
952    o pkg/seaice:
953        add new parameter SEAICE_deltaMin that is used ***only***
954        for regularizing Delta (and nothing else, like the parameter
955        which is also used for all sorts of things SEAICE_EPS).
956        Defaults to SEAICE_EPS for backward compatibility only.
957    o pkg/seaice: replace erroneously storing e12Csqr on the wrong tape with
958        the wrong key by inialising it before use -> fixes a recomputation
959        problem but does not fix the gradient
960    o pkg/layers:
961      - move resetting of flux arrays to outside the iLa loop
962        (this caused layers_diapycnal to not work with more than one layer coord.)
963      - fix bug in calculation of layers_recip_delta in layers_init_fixed.F
964    o pkg/layers:
965      - remove from common block 3D layers fields (used to diagnose transport
966        in tracer coords) and declare them as local arrays in layers_calc.F
967    o pkg/seaice:
968      - Rename SEAICE_VECTORIZE_LSR_ZEBRA to SEAICE_LSR_ZEBRA and define it
969        in lab_sea forward experiment (changes results -> updated)
970      - update adjoint experiment lab_sea after cleaning up seaice_lsr_tridiagu/v
971    o pkg/seaice: modify seaice_lsr.F in order to improve the gradient
972       computations; for SEAICE_VECTORIZE_LSR
973      - move the loops over which the tridiagonal solvers (seaice_lsr_tridiagu/v)
974        sweep to the outside,
975      - remove store directives and add "CADJ loop sequential" directives
976        in analogy to model/src/solve_tridiagonal.F
977      - replace many "#ifdef SEAICE_VECTORIZE_LSR_ZEBRA" by variable loop
978        boundaries to yield more readable code. This has also the charming side
979        effect that your can use SEAICE_VECTORIZE_LSR_ZEBRA without
980        SEAICE_VECTORIZE_LSR (i.e. adjoint without recomputations in
981        seaice_lsr_tridiagu/v now requires either of these flags, vectorization
982        still requires SEAICE_VECTORIZE_LSR with SEAICE_VECTORIZE_LSR_ZEBRA as
983        an additional option)
984       The tridiagonal solvers are now completely analoguous to solve_tridiagonal.F
985       but the adjoint gradients (which are affected by this change) still explode.
986    o coupler (atm & ocn _compon_interf):
987      - avoid using Exch2 IO mapping if not suitable.
988    
989    checkpoint65m (2015/06/15)
990    o pkg/layers:
991      - clean-up old parameters setting (from Sep 2012):
992        + remove old parameters setting from common block (declared locally);
993        + stop if any old parameter is mixed with new parameters;
994        + check for valid or consistent parameter setting (e.g., layers_name)
995      - check that layers_bounds for Pot.Density are in the right range;
996        this is supposed to catch un-updated setting after recently shifting
997        potential density field "prho" by -1000 (now in "sigma" scale).
998    o pkg/layers:
999      - Added missing call to layers_fill for keeping track of tottend in
1000        pkg/diagnostics/diagnostics_fill_state.F
1001    o pkg/layers:
1002      - added CPP flux LAYERS_FINEGRID_DIAPYCNAL to disable fine-grid binning
1003        of diapycnal fluxes
1004    o pkg/layers:
1005      - reverted changes to interpolation to previous treatment; there
1006        was never actually a problem
1007    o pkg/layers:
1008      - fix interpolation of layers tracers in the presence of partial cells
1009      - add lots of new functionality to compute water mass transformation
1010        (enabled by CPP flag LAYERS_THERMODYNAMICS)
1011      - add new calls from main code (diags_oceanic_surf_flux.F,
1012        thermodynamics.F, impldiff.F) and gad to save the necessary fields
1013        for layers_thermodynamics calculations
1014    o pkg/ptracers:
1015      - add capability of stepping a passive tracer forward without advection
1016        by setting PTRACERS_advScheme to 0.
1017    o pkg/diagnostics:
1018      - add few (threads) _BARRIER around any update of "diag_pkgStatus".
1019    o pkg/layers:
1020      - shift potential density field "prho" by -1000 for density layer averaging so
1021        that it corresponds to usual "sigma" definition (i.e., rho(p=const)-1000);
1022        Note that density bin boundaries (layers_bounds in data.layers) have
1023        to be set accordingly (i.e., shifted, in sigma scale).
1024    o pkg/layers:
1025      - fix snap-shot output of layer thickness @ V.pt and output of pot.density
1026      - fix calculation of layer non-weighted velocity and layer probability
1027      - add diagnostics for pot.density used for layer averaging
1028    o pkg/seaice:
1029      - seaice_calc_viscosity.F: change computation of deltaC**2 to ensure
1030        positiveness, modify a few comments and improve variable names,
1031      - the changed computation of deltaC affects most seaice-related
1032        experiments at the truncation level.
1033        seaice_itd.thermo is affected by far the most, with
1034        only 7 digits of agreement remaining; update experiments.
1035    
1036    checkpoint65l (2015/05/04)
1037    o pkg/shelfice:
1038      - in shelfice_thermodynamics.F, if SHELFICEBoundaryLayer=.true., then set
1039        factor drKp1 to zero where it is negative (ie. do not use
1040        SHELFICEBoundaryLayer if hFacC>1)
1041      - the same for factor drLoc in shelfice_forcing.F
1042    o tools/genmake2: move FEXTRAFLAGS from FFLAGS to FOPTIM to avoid a problem
1043        with modules in ptracers, when using testreport option "-small_f"
1044    o pkg/seaice/seaice_growth.F (in case of SEAICE_ITD)
1045      - replace tmpscal1**1.36 by faster exp(1.36*log(tmpscal1))
1046    o verification/testreport
1047      - add new option -small_f
1048        with this option testreport first makes the target small_f (*.f files)
1049        before running make (all). This is useful for explicit inlining when
1050        all sources need to be full available.
1051    o pkg/exf/exf_interp.F:
1052        remove previous changes related to reverse (decreasing) input grids latitude
1053    
1054    checkpoint65k (2015/04/01)
1055    o pkg/ecco:
1056        fix missing cosphi initialization; use eccoiter in place of optimcycle;
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/ctrl:
1060        if autodiff is not compiled then use READ_REC_XY_RL/READ_REC_XYZ_RL
1061        instead of active read/write.
1062    o pkg/autodiff: make autodiff_readparms.F and autodiff_whtapeio_sync.F
1063        return if .NOT.useAUTODIFF
1064    o pkg/seaice: add CPP brackets (cost function related).
1065    o model/src:
1066        add useAUTODIFF run time switch.
1067    o pkg/exf/exf_interp.F:
1068        add code to allow input grids with latitude starting in the north (i.e. when
1069        j=1 corresponds to northern edge of field); modify global_with_exf to test
1070        this feature.
1071    o verification/testreport:
1072      - replace "grep -A3" with POSIX conformal sed command, because there are
1073        implementations of grep that cannot do contextual searches
1074      - replace "cat -n" by "nl" (two occurrences), because not all implementations
1075        of "cat" have the option "-n"
1076    o model/src:
1077        add new file gsw_teos10.F that contains 3 functions, more or less a copy
1078        of the gsw_toolbox.f90 of the TEOS-10 fortran interface, that are used to
1079        convert from conservative to potential temperature. For now they are not
1080        called anywhere.
1081    o pkg/ggl90: make "useIDEMIX" useful
1082      - re-organize code in s/r ggl90_calc a little to move computations that
1083        are different for idemix into separate loops (changes verification
1084        experiment idemix at truncation level, 12 digits remain -> updated)
1085      - requires 2 new 2D fields KappaM, verticalShear
1086      - make hFacI and recip_hFacI local 3D variables that are passed to
1087        s/r ggl90_idemix
1088      - fix and improve some comments
1089    
1090    checkpoint65j (2015/02/25)
1091    o pkg/openad
1092      - synchronize seawater.F with version in model/src: replace routine
1093        body of sw_temp by calling sw_ptmp and fix/add a few comments.
1094    o pkg/mnc:
1095      - change default value of pickup_read/write_mnc params to FALSE
1096        (since few features are missing in reading MNC pickup files).
1097    o model/src:
1098      - change default (background) vertical diffusivity for salt to be the
1099        temperature (background) vertical diffusivity.
1100      - change background vertical diffusivity in vertical mixing pkgs ggl90,
1101        kl10, my82 and pp81 from temperature diffusivity to salinity diffusivity.
1102        This makes ptracers default diffusivity (that uses salt diffKr) more
1103        consistent with vertical mixing schemes.
1104    o verification/testreport:
1105      - fix typo in "-pcls" option ;
1106      - put temp files in /tmp (instead of in local dir)
1107      - add option "-ncad" to use genmake2 new option "-nocat4ad"
1108      - allow to use "-j" option (for multi-procs make) for AD, OAD and TLM.
1109    o pkg/ggl90 (idemix code):
1110      - apply few fixes ; add some missing "_d 0" ; update output of exp.
1111        global_ocean.90x40x15.idemix
1112    o OpenAD
1113      - enable active file I/O and begin removal of work-around code
1114        for OpenAD for handling control variables (memory vs. active files)
1115      - new CPP options file OPENAD_OPTIONS.h
1116      - revert to genarr2d gradient check for hs94.1x64x5
1117      - (genarr3d tested by tutorial_global_oce_biogeo, tutorial_tracer_adjsens)
1118      - gentim2d works for halfpipe_streamice but not yet hs94.1x64x5
1119    o tools/genmake2:
1120      - add option for an alternative Makefile (from Martin) where multiple
1121        source files are sent to TAF (instead of all in one file).
1122    o pkg/ggl90: add IDEMIX (Olbers and Eden, 2013)
1123      - code provided by Carsten Eden as an extension of ggl90
1124      - so far the code is turned on within ggl90 by setting a CPP-flag at
1125        compile time; a runtime flag implementation is not yet complete
1126      - tested in new verification experiment global_ocean.90x40x15.idemix
1127    o verification:
1128      - reduce length of the AD test run by half for experiments
1129        global_ocean.cs32x15 (std + thsice) and isomip
1130      - enable active file I/O for OpenAD, adjust verifications accordingly
1131      - halfpipe_streamice: change gradient check from genarr2d to gentim2d
1132    o verification/testreport:
1133      - fix two non-POSIX sed statements so that there are no error messages
1134        on Mac OS X
1135      - replace hostname -s with hostname | sed 's/\..*$//'
1136    o model/src/seawater.F:
1137      - simplify SW_TEMP to just calling SW_PTMP with P and PR exchanged
1138        (following the matlab code), which would have avoided the bug caught
1139        by Matt (see below) in the first place
1140    o pkg/shelfice:
1141      - implement alternative discretisation of quadratic drag (selectBotDragQuadr)
1142        and true distance in no-slip BC (bottomVisc_pCell) similar to bottom-drag.
1143      - fix sign of friction tendency (no-slip BC) and fix u,v drag for thin
1144        ice-shelf case (i.e., within surface level).
1145      - add config summary in shelfice_check.F
1146      - remove global variable recip_SHELFICElatentHeat and replace by a local
1147        variable recip_latentHeat
1148      - introduce diagnostics for friction velocity uStar (in case of
1149        SHELFICEuseGammaFrict)
1150      - change verification experiment isomip.htd:
1151        + start from pickup (as input_ad at nIter0=8640)
1152        + start from SHELFICEmassFile instead of SHELFICEloadAnomaly file
1153        + test SHELFICEuseGammaFrict = .TRUE.
1154        + test SHELFICEadvDiffHeatFlux = .TRUE.
1155    o model/src:
1156      - fix bug (Thanks to Matt) in function SW_TEMP (to convert Pot.Temp to
1157        in-situ Temp) and in routine SW_TEMP (in pkg/openad);
1158        update output of experiments global_with_exf.yearly and isomip (all 6).
1159    o pkg/shelfice:
1160      - change setting of kTopC to also be zero where there is no ice-shelf.
1161      - zero out surface forcing arrays (for now, for T & S + EmPmR) where
1162        ice-shelf is.
1163      - first attempt to get RealFreshWaterFlux effects: for now, only without
1164        SHELFICEboundaryLayer ; not consistent if using synchronous time-stepping.
1165    o pkg/seaice: add the option to prescribe a fixed thickness PDF
1166      for thermodynamic calculations
1167      - because of divisions of the type 7/7 not exactly equal to 1, this change
1168        affects results of some verification experiments by up to 4 digits:
1169        global_ocean.cs32x15.seaice, lab_sea, lab_sea.fd, lab_sea.salt_plume,
1170        seaice_obcs, seaice_obcs.seaiceSponge, seaice_obcs.tides
1171        adjoint: lab_sea, lab_sea.noseaicedyn
1172        -> updated
1173    
1174    checkpoint65i (2015/01/23)
1175    o model/src:
1176      - change units of frictionHeating field from W to W/m^2
1177      - fix bug in frictional heating from stratospheric drag in
1178        S/R ATM_PHYS_TENDENCY_APPLY_V
1179      - with synchronous time-stepping: move resetting to zero of frictionHeating
1180        field from load_fields_driver.F to thermodynamics.F ;
1181      - add diagnostics for frictional heating.
1182    o model/src & gmredi K3D:
1183      - add frictionHeating field to pickup-files (for synchronous time-stepping)
1184      - move ALLOW_EDDYPSI block out of DYNVARS.h and merge it into FFIELDS.h
1185      - rename uMean,vMean --> uEulerMean,vEulerMean (+ change diagnostics name
1186        and name in pickup file).
1187      - fix arguments of few DIAGNOSTICS_FILL calls in gmredi_k3d.F
1188    o model/src:
1189      - move (from ini_forcing.F) initialisation of all arrays in header file
1190        FFIELDS.h into new S/R ini_ffields.F ; this fix broken restart
1191        (since Nov 2012) with option selectAddFluid=1.
1192    o pkg/shelfice:
1193      - change units (+ document) of newly added field "shelfIceMassDynTendency"
1194      - upgrade from _RS to _RL shelficeMass & shelficeLoadAnomaly arrays.
1195    o pkg/obcs: re-organize obcs_calc_stevens.F to prepare for passive tracers
1196    o pkg/seaice: two new runtime parameters:
1197      - SEAICE_cStar replaces the hard wired "20" in the strength formulation,
1198        long overdue
1199      - SEAICE_tensilFac: preparation for Koenig-Beatty+Holland (2012)
1200        parameterization of tensil stress for fast ice (does not do anything yet)
1201    o pkg/seaice/seaice_check.F: left over from restricted addtive Schwarz method
1202        for LSR: move checking overlaps out of JFNK-if-block
1203    o pkg/atm_phys:
1204      - move copy of grid and dynamical fields out of atm_phys_driver.F into
1205        new S/R ATM_PHYS_DYN2PHYS.
1206      - fix level height for Linear Free-Surf case (to be consistent with
1207        fixed-in-time pressure levels).
1208    o pkg/mom_common (bottomdrag):
1209      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
1210        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
1211        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
1212    o pkg/shelfice (u/v_drag):
1213      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
1214      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
1215        (now similar to shelfice_u_drag.F)
1216      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
1217        from mom_vecinv.F (similar to mom_fluxform calls).
1218    o pkg/mom_common (bottomdrag):
1219      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
1220      - add options for alternative discretisation of velocity norm in quadratic
1221        bottom drag: averaging of grid-cell-center KE to U.point and V.point
1222        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
1223        improves when averaging only the other component (e.g. vVel for U bottom
1224        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
1225      - add options (bottomVisc_pCell) to account for partial-cell in bottom
1226        friction (no-slip BC) thus getting the true distance from the bottom;
1227        off by default since this also reduces model stability (explicit bottom
1228        friction). Changes produce different machine truncation with linear-drag
1229        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
1230        front_relax (bvp & mxl, 10 & 11 digits).
1231    o model/src & mom pkgs:
1232      - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
1233        since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
1234      - for now and until vertical mixing scheme are updated to fill up level Nr+1,
1235        just copy level Nr value to level Nr+1.
1236    o doc:
1237      - add notes form Abhisek Chakraborty on how to close Heat & Salt budgets.
1238    o pkg/shelfice:
1239      - shelfice_init_varia.F, shelfice_init_fixed.F, shelfice_readparms.F,
1240        SHELFICE.h: move array shelficemass to init_varia, initialise
1241        from array shelficemassinit, which is set in init_fixed and
1242        has option to be set from file; introduce array
1243        shelficeMassDynTend array, set thru file in init_fixed
1244      - NEW FILE: shelfice_step_icemass.F: update shelficemass from either
1245        shelfIceFreshWaterFlux and shelficeMassDynTend or H_streamice in
1246        pkg/streamice
1247      - shelfice_thermodynamics.F: call shelfice_step_icemass if
1248        SHELFICEMassStepping = .true.
1249      - shelfice_ad_diff.list: add new subroutine shelfice_step_icemass.f
1250    
1251    checkpoint65h (2014/12/17)
1252    o verification/global_ocean.90x40x15, global_ocean_ebm:
1253      - update to generic controls.
1254    o pkg/ctrl:
1255      - ctrl_map_ini_genarr.F: test for igen>0
1256      - ctrl_init_variables.F: add call to CTRL_MAP_INI_GENTIM2D.
1257      - move gentim2d part of ctrl_map_ini_genarr.F to
1258        new separate routine : ctrl_map_ini_gentim2d.F
1259      - ctrl_cost_driver.F,ctrl_init.F ctrl_map_ini_genarr.F:
1260        add time variable weights and cyclic controls (time mean,
1261        seasonal cycle, etc) capabilities to gentim2d
1262    o pkg/ecco:
1263      - move reading of error, conversion to weights from
1264        ecco_cost_init_fixed.F to ecco_toolbox.F (ecco_readwei)
1265    o global_oce_llc90, cs32:
1266      - activte sbo.
1267      - CTRL_SIZE.h : add maxCtrlProc.
1268      - activate the new genctrl capabilities.
1269      - update following reorganization of global_oce_input_fields.tar.gz  
1270    o pkg/ctrl/ctrl_ad_diff.list:
1271      - add missing ctrl_init_rec.f
1272    o tools/OAD_support/keepOriginal:
1273      - add ctrl_init_rec.F
1274    o model/src/the_main_loop.F, pkg/ctrl/ctrl_map_ini_genarr.F:
1275      - avoid recomputations of xx_gentim2d_dummy.
1276    o momentum diagnostics:
1277      - move filling of diagnostics Um_Diss & Vm_Diss from mom_fluxform.F and
1278        mom_vecinv.F to timestep.F (to include Smag-3D contribution).
1279    o pkg/seaice/seaice_lsr.F:
1280      - fix computation of BU/BV, make sure they are non-zero, only necessary
1281        for cubed sphere exchanges and SEAICE_OLx/y>0.
1282        This makes calling s/r fill_cs_corner_rl obsolete (removed).
1283    o verification/global_ocean.cs32x15/input.seaice
1284      - add test for strong implicit coupling and restricted addtive Schwarz
1285        methods for LSR
1286      - update results/output.seaice.txt
1287    o verification/tutorial_global_oce_biogeo:
1288      - AD & OAD set-up: switch off ALLOW_OLD_VIRTUALFLUX (like in fwd set-up)
1289        and set PTRACERS_EvPrRn(1,2) to zero (for DIC & ALK);
1290        update output_adm,_oadm,_tlm.txt
1291    o pkg/dic:
1292      - change default to "#undef ALLOW_OLD_VIRTUALFLUX" in DIC_OPTIONS.h
1293      - add a stop when ALLOW_OLD_VIRTUALFLUX is defined and PTRACERS_EvPrRn
1294        for tracer 1 & 2 is set (to avoid double counting of dilution effect).
1295    o verification/tutorial_global_oce_biogeo:
1296      - AD & OAD set-up: do not set PTRACERS_EvPrRn for tracer 1 & 2 since
1297        dilution is already added by pkg/dic ALLOW_OLD_VIRTUALFLUX ;
1298        update output_adm,_oadm,_tlm.txt
1299    o eesupp/src:
1300      - add fill_cs_corner_rl.F (_RL-copy of fill_cs_corner_rs.F)
1301        and call it in seaice_lsr when using nonzero SEAICE_OLx/y
1302    o pkg/seaice: introduce strongly implicit coupling, intended for stabilizing
1303      LSR (following Hutchings et al. 2004)
1304      - introduce zetaZ as a global variable (requires adjustments in
1305        seaice_evp.F and seaice_jfnk.F) and compute analoguously to etaZ
1306        in seaice_calc_viscosities.F
1307      - new flag SEAICEuseStrImpCpl (default off)
1308      - add new terms zetaZ*du/dy and zetaZ*dv/dx on both sides of the
1309        momentum equations
1310      - JFNK-solver (preconditioner) adjusted to allow using this method
1311        (where it does not have any positive effect)
1312    o pkg/seaice
1313      - add overlap for restrictive additive Schwartz method also to LSR, but
1314        turn it off by default (because it only seems to work for non-cubed
1315        sphere/llc topologies)
1316    o pkg/autodiff
1317      - add extra exchanges in addummy_in_steppging also for mnc output
1318    o pkg/seaice:
1319      - add extra exchanges before dumping adjoint fields in seaice_ad_dump.F
1320        to avoid stripes in the adjoint output (similar to addummy_in_stepping.F)
1321    o pkg/obcs:
1322      - add option to specify domain-connected piece Id along OB though files
1323        (for now, only used to diagnose PhiVel; default =1 -> global correction)
1324      - modify obcs_diag_balance.F to process each connected-part separately;
1325        exclude OB where Id = 0 but keep the full divergence there (-> constant
1326        Psi along this portion of OB and all inflow derived from grad(Phi))
1327      - add example of OB-conect files in verification/so_box_biogeo/input.
1328    o pkg/diagnostics:
1329      - improve treatment of Open-Boundaries in Velocity-Potential calculation:
1330      a) use non zero matrix element across OB and solve for Phi 1 grid point
1331         outside OB (i.e, where tracer OBCS are applied).
1332      b) global imbalance of inFlow/outFlow across OB: instead of modifying
1333         velocity across OB, spread it uniformly along the OB in the RHS.
1334    
1335    checkpoint65g (2014/11/19)
1336    o pkg/diagnostcis:
1337      - add preconditioner off-diagonal factor (diagCG_pcOffDFac) as run-time param
1338    o pkg/my82,pp81,kl10:
1339      - fix ALLOW_3D_DIFFKR implementation (previously had no effect): use 3-D
1340        field diffKr as background diffusivity to set minimum diffusivity value.
1341    o pkg/seaice:
1342      - add new parameter SEAICEuseEVPrev (for revisited EVP by
1343        Bouillon et al 2013)
1344      - add SEAICE_evpAlpha/Beta to namelist
1345      - modify seaice_evp code to able to use SEAICEuseEVPrev. These changes
1346        involve trivial re-ordering of divisions/multiplications that should not
1347        have any effects, but ... they do change the results of lab_sea.hb87 so
1348        that only 2 digits of agreement remain, in line with the general
1349        instability/fragility of the evp-code. For now, I do not care and just
1350        update the verification experiment
1351    o pkg/ctrl : add generic pre-processing (xx_genarr2d_preproc etc)
1352      - remove xx_genarr2d_numsmooth etc
1353      - use xx_genarr2d_preproc etc instead
1354      - carry out smooth_correl2D at initialization stage rather than during
1355        time stepping.
1356      - get smoothOpNb from xx_gentim2d_preproc
1357    o global_oce_cs32 :
1358      - add test of generic ecco capabilities.
1359    o pkg/exf/exf_getsurfacefluxes.F :
1360      - add to tmpUE/tmpVN rather than re-initializing them (conventional behavior).
1361    o pkg/ctrl,ecco :
1362      - omit un-necessary arguments to ctrl_cost_gen.F unless ECCO_CTRL_DEPRECATED
1363        is defined.
1364    o pkg/seaice: add diagnostics for Delta (deformation parameter)
1365    o model/src:
1366      - when ALLOW_3D_DIFFKR is defined, add a Warning if any of the vertical
1367        diffusivity (background) is specified but ignored.
1368    o verification:
1369      - in testreport, convert hostname to lower case for default output dir name
1370    o model, pkg : add useCTRL, useECCO parameters (on/off run time switch).
1371    o pkg/dic: add modifications from Hajoon:
1372      - add iron sedimentation flux function of the flux of PO4 out of bottom layer
1373      - light attenuation: add self-shading effect by climatological Chlorophyll
1374        (read from file).
1375    o pkg/seaice/seaice_preconditioner.F : fix cpp flags, so that code also
1376        compiles when SEAICE_ALLOW_DYNAMICS is undefined
1377    o global_oce_llc90,cs32 : ecco_v4 verification exps now use separate
1378        AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h, ECCO_OPTIONS.h rather than
1379        ECCO_CPPOPTIONS.h (i.e. replacing the deprecated, circumvoluted,
1380        approach where CPP_OPTIONS.h includes an omnipotent
1381        ECCO_CPPOPTIONS.h that superseeds pkgs '_OPTIONS.h').
1382    o pkg/ctrl/ctrl_map_ini_genarr.F : include GMREDI_OPTIONS.h where
1383        ALLOW_3D_KAPGM, ALLOW_3D_KAPREDI (to be added later) belong.
1384    o pkg/seaice/SEAICE_SIZE.h : replace ALLOW_AUTODIFF_TAMC with ALLOW_AUTODIFF
1385        to avoid needing AUTODIFF_OPTIONS.h anytime SEAICE_SIZE.h is included
1386        (it seems that THSICE_SIZE.h, PTRACERS_SIZE.h have the same issue...)
1387    o model/src, pkg/smooth, profiles, salt_plume, seaice, exf, ecco, ctrl :
1388      add ECCO_OPTIONS.h, AUTODIFF_OPTIONS.h, CTRL_OPTIONS.h when needed
1389      - ECCO_OPTIONS.h is needed when including ecco_cost.h, ecco.h
1390      - AUTODIFF_OPTIONS.h is needed when including tamc.h, tamc_keys.h
1391      - CTRL_OPTIONS.h is needed when including ctrl.h, optim.h, etc
1392    o pkg/ctrl,ecco,exf :
1393      - remove variables associated with NON-generic costs,
1394        unless ECCO_CTRL_DEPRECATED is defined.
1395      - remove NON-generic NON-obcs controls,
1396        unless ECCO_CTRL_DEPRECATED is defined.
1397    o pkg/ctrl : added ctrl_local_params.h
1398    o pkg/ecco : added ecco_local_params.h
1399    o verification : added ECCO_CTRL_DEPRECATED to most as and oad
1400        experiments, which will progressively be removed once the
1401        experiments are revised to use only generic controls/costs.
1402    
1403    checkpoint65f (2014/10/13)
1404    o pkg/ctrl, ecco, seaice : minor changes in headers
1405    o global_oce_llc90,cs32 : ecco_v4 verification exps now test generic
1406        cost function and control capabilities added since checkpoint65c.
1407    o pkg/ctrl: regroup all obcs ctrl variables in CTRL_OBCS.h.
1408    o pkg/ecco: increase modularity and improve logic
1409      - ecco_toolbox.F (new) : basic operations that are often used,
1410        including ecco_zero, ecco_cp, ecco_cprsrl, ecco_diffmsk,
1411        ecco_addcost, ecco_add, ecco_div, ecco_readbar.
1412      - cost_gencal.F (new) : determine filnames and records.
1413      - cost_genread.F, cost_generic.F : condense code using ecco_toolbox.
1414      - cost_generic.F : use spzeroloc rather than hard-coded -9999,
1415        and exploit the above functions leading to more compact code.
1416      - cost_genread.F : rm un-necessary arguments, re-arrange args order.
1417      - ecco_check.F, ecco_readparms.F : bring logic up to date (using_tpj,
1418        using_ers, using_gfo, using_mdt is now only defined within gencost)
1419    o pkg/ecco: extend generic cost capabilities
1420      - pkg/ecco : added 3D gencost (ALLOW_GENCOST3D), added gencost
1421        capabilities via gencost_preproc (+ _c,_i,_r related params),
1422        gencost_posproc (+ _c,_i,_r related params), gencost_nrecperiod,
1423        gencost_outputlevel arguments to cost_generic
1424      - pkg/ecco/cost_genread.F (new) : interface between cost_generic
1425        and active_read, making room for gencost_preproc to take effect.
1426        Added preproc code ('climmon') to replace GENERIC_BAR_MONTH.
1427      - pkg/ecco/cost_generic.F :
1428        compute and store misfit maks*(model-data) in localdif that is
1429        then used in cost and for output, output misfit if outlev.GT.0
1430      - pkg/ecco/cost_averagesfields.F : depend on gencost_barskip
1431        rather gencost_barfile for deciding whether to write barfile
1432      - pkg/ecco/ecco_cost_driver.F : extract call to cost_profiles from cost_hyd
1433      - pkg/ecco/ecco_cost_init_fixed.F : extract gencost weights from
1434        ecco_cost_weights, re-activate ecco_summary, determine gencost_barskip
1435      - pkg/ecco/ecco_summary.F : report gencost variables
1436      - pkg/ecco/cost_gencost_customize.F : treat case of scatterometer costs
1437    o pkg/sea/SEAICE_OPTIONS.h : add ALLOW_COST_ICE, ALLOW_SEAICE_COST_SMR_AREA
1438    o pkg/ecco: internal re-organization
1439      - resolve un-necessary dependancies within pkg/ecco and to pkg/ctrl
1440        (rm includes of optim.h and ctrl.h, replace optimcycle with eccoiter,
1441        mv relevant variables definition from ecco_cost.h to ecco.h,
1442        make sure gencost routines only include ecco.h)
1443      - throughout : add missing CCP switches, rm unused variables,
1444        and rm un-necessary CPP switches
1445      - throughout gencost routines : replace modelstartdate with
1446        gencost_startdate when needed
1447      - cost_bp_read.F : use arguments, instead of common blocs
1448        so that it can be used also by (new) cost_gencost_bpv4.F
1449      - ecco_init_varia.F : initialize RHOsumGlob_0, VOLsumGlob_0
1450      - ecco_phys.F : compute etanFull
1451      - ecco_readparms.F : rename using_topex as using_tpj, add
1452        bpv4-grace to gencost list, initialize added parameters
1453      - ecco_summary.F : include SIZE.h needed for augmented ecco.h
1454    
1455    checkpoint65e (2014/09/28)
1456    o pkg/obcs:
1457      - replaced the just-added CPP options with run-time variables
1458        (see pkg/obcs/OBCS_PARAMS.h for details)
1459    o pkg/obcs:
1460      - add additional CPP options for sponge boundary layers
1461        (see pkg/obcs/OBCS_OPTIONS.h for details)
1462    o pkg/atm_phys:
1463      - implement simple (obliquity only, assuming circular planet orbit)
1464        seasonal cycle for incoming insolation ; used when run-time parameter
1465        "select_incSW" is set to 1 ; by default (=0), uses old unchanged formula.
1466    o pkg/exf, pkg/ecco, pkg/ctrl:
1467      - add ctrlUseGen and .NOT.ctrlUseGen exclusive brackets
1468      - activate gentim2d for xx_atemp,xx_aqh,xx_swdown,xx_lwdown,xx_precip
1469      - implement gentim2d for xx_tauu, xx_tauv
1470    o pkg/ctrl, pkg/ecco :
1471      - fix and complement the generic controls implementation
1472    o pkg/exf/exf_getclim.F, exf_getffields.F, exf_getsurfacefluxes.F,
1473        pkg/shelfice/shelfice_thermodynamics.F,
1474        verification/hs94.1x64x5/code_ad/ctrl_map_gentim2d.F,
1475        verification/hs94.1x64x5/code_oad/ctrl_map_gentim2d.F :
1476      - add weight in CTRL_GET_GEN calls
1477    o pkg/ctrl :
1478      - ctrl_get_gen.F : add weight as input parameter, and apply
1479        it directly rather than using smooth_correl2Dw (to be retired).
1480      - ctrl_map_gentim2d.F : add wgentim2d in CTRL_GET_GEN call
1481    o pkg/ctrl :
1482      - introduce run time switch ctrlUseGen (in ctrl.h, ctrl_check.F,
1483        ctrl_init_variables.F, ctrl_readparms.F, ctrl_summary.F)
1484      - re-activate ctrl_summary (call in ctrl_init.F)
1485    o pkg/ctrl/ctrl_cost_gen.F :
1486      - fix CCP brackets, remove un-necessary myiter, mytime
1487    o pkg/ecco, pkg/ctrl :
1488      - remove cost_genctrl.F (now pkg/ctrl/ctrl_cost_driver.F)
1489      - remove cost_forcing_gen.F (now pkg/ctrl/ctrl_cost_gen2d.F)
1490      - add ctrl_cost_driver.F (replaces pkg/ecco/cost_genctrl.F)
1491      - add ctrl_cost_gen2d.F (replaces pkg/ecco/cost_forcing_gen.F)
1492    
1493    checkpoint65d (2014/09/15)
1494    o pkg/ctrl/CTRL_GENARR.h, ctrl_readparms.F :
1495      - add xx_genarr2d_bounds,xx_genarr3d_bounds,
1496        xx_genarr2d_numsmooth, xx_genarr3d_numsmooth
1497    o pkg/ctrl/ctrl_map_ini_genarr.F :
1498      - remove compilation failure
1499      - replace hard coded example
1500      - use ctrl_map_ini_gen2D, 3D
1501    o pkg/ctrl/ctrl_pack.F, ctrl_unpack.F :
1502      - on/off switch based upon xx_genarr2d_weight,3d
1503    o src/packages_init_variables.F :
1504      - regroup pkg/estimation calls
1505      - remove CTRL_MAP_INI, CTRL_MAP_INI_ECCO
1506        (moved to ctrl_init_variables)
1507    o cost/cost_init_varia.F :
1508      - remove ecco_cost_init_varia
1509        (moved to ecco_init_varia)
1510    o ctrl/ctrl_init_variables.F :
1511      - add CTRL_MAP_INI, CTRL_MAP_INI_ECCO
1512      - add CTRL_MAP_INI_GENARR, SEAICE_CTRL_MAP_INI
1513    o ctrl/ctrl_map_ini.F :
1514      - remove ctrl_map_ini_genarr, seaice_ctrl_map_ini
1515        (moved to ctrl_init_variables)
1516    o ctrl/ctrl_map_ini_ecco.F :
1517      - remove ECCO_PHYS (mv to ecco_init_varia)
1518      - remove seaice_ctrl_map_ini (mv to ctrl_init_variables)
1519    o ecco/ecco_ad_diff.list :
1520      - add ecco_init_varia.f
1521    o ecco/ecco_init_varia.F
1522      - new routine
1523    o pkg/streamice:
1524      - move call to STREAMICE_INITIALIZE_PETSC from the_model_main.F
1525        to streamice_init_fixed.F ; fix setting of STREAMICEisOn.
1526      - from model/src, only call pkg/streamice routines if useStreamIce is TRUE.
1527    o pkg/generic_advdiff:
1528      - fix bug causing negatives in GAD_SMOLARKIEWICZ_HACK, introduced 8/8/2014.
1529    o pkg/exf:
1530      - exf_getffields.F : add xxg_atemp, xxg_aqh, xxg_swdown, xxg_lwdown,
1531         xxg_precip capability
1532      - exf_wind.F : no need for ALLOW_WSPEED_CONTROL cpp switch
1533    o pkg/ctrl:
1534      - ctrl_pack.F, ctrl_unpack.F : omit (un)packing of undefined xx_gentim2d
1535    o model/src/load_fields_driver.F :
1536      - move call to CTRL_MAP_GENTIM2D ahead of BULKF_FIELDS_LOAD, EXF_GETFORCING
1537        so xx_gentim2d can be applied to e.g. exf fields in a timely manner.
1538    o OpenAD verification experiments:
1539      - Include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h, and CTRL_OPTIONS.h
1540        in src files (to enable to skip the ECCO_CPPOPTIONS.h);
1541        for now, only in pkgs used in OpenAD verification experiments.
1542      - Change all except one (halfpipe_streamice) OpenAD experiments to use pkg
1543        specific option file (AUTODIFF_OPTIONS.h, COST_OPTIONS.h & CTRL_OPTIONS.h)
1544        instead of using ECCO_CPPOPTIONS.h (with all relevant options in it).
1545        This applies to both TAF (*/code_ad/) and OpenAD (*/code_oad/) tests.
1546    o OpenAD verification tests:
1547      - finish removing ALLOW_AUTODIFF_OPENAD (replaced by ALLOW_OPENAD);
1548      - finish replacing ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for
1549        tape/storage which are specific to TAF/TAMC) in pkgs used in OpenAD exp.
1550      - leave ALLOW_AUTODIFF_TAMC undef in OpenAD verification tests (*/code_oad/)
1551        and remove local copy of "tamc.h" (needed only if ALLOW_AUTODIFF_TAMC).
1552    o model/src & generic_advdiff:
1553      - change hard-coded loop-range in S/R APPLY_FORCING_T/S to set T & S
1554        forcing over 0:sNx+1, 0:sNy=1 (instead of just 1:sNx,1:sNy): Model
1555        dynamics requires valid tracer forcing only over tile interior but, for
1556        some diagnostics, may need to extend it over 1 point in tile halo region.
1557      - in gad_calc_rhs.F, update calls to gmredi_x/ytransport to get valid
1558        tendency over i,j_Min,Max range. This allows to simplfy i,j_Min,Max
1559        setting in temp/salt/ptracer_integrate.F
1560    o pkg/dic:
1561      - multiply tracer tendencies by maskInC (if ussing OBCS) before updating
1562        gchem tracers: this allows to skip the 2nd call to OBCS_APPLY_PTRACER
1563        in gchem_forcing_sep.F
1564    o pkg/autodiff & obcs:
1565      - add storage of current OB values for U & V (was already done for T & S).
1566    
1567    checkpoint65c (2014/08/30)
1568    o pkg/dic:
1569      - take out of dic_atmos.F the initialisation part (corresponding to istate=0)
1570        and move it to new S/R DIC_INI_ATMOS ; also simplify the dependencies for
1571        AD compilers (but still a Pb with multi-threading and Ajoint dependencies).
1572    o verification:
1573      - new experiment testing OBCS and DIC pkgs, using params & output from
1574        tutorial_global_oce_biogeo but limited to a sub-domain around Drake
1575        passage: take OBCS from the last year of a 2 yrs simulation and initial
1576        conditions from t=1.yr while keeping the same forcing.
1577    o model/src:
1578      - when allowFreezing=T, only reset below freezing initial Temp to Tfreezing
1579        (at any k) if checkIniTemp is not set to FALSE (default checkIniTemp=T).
1580    o pkg/diagnostics (Stats-Diags):
1581      - re-write S/R DIAGSTATS_CALC (more similar to TARGET_NEC_SX part) to:
1582        a) refine region where stats are computed, excluding where arrhFac=0 ;
1583        b) fix missing interior mask (use with OBCS) in 3-D fields statistics;
1584        c) extend regional stats over the region edges (for U or V pt location).
1585    o pkg/gchem:
1586      - add a (2nd) call to OBCS_APPLY_PTRACER in gchem_forcing_sep.F (needed since
1587        pkg/dic is currently changing/updating ptracers values beyond the OB).
1588    o verification (hs94):
1589      - convert Held & Suarez external_forcing.F (from hs94.cs, with Sigma-coords
1590        bits) to apply_forcing.F and undef USE_OLD_EXTERNAL_FORCING in experiments
1591        hs94.cs-32x32x5 and tutorial_held_suarez_cs ; also use the same version of
1592        apply_forcing.F in 2D hs94 (fwd, ad & oad) but keep LatLon hs94 unchanged.
1593    o pkg/ptracers:
1594      - implement Adams-Bashforth on pTracers (instead of on tracer tendency),
1595        switched on by setting PTRACERS_doAB_onGpTr=F (default set to doAB_onGtGs)
1596      - change exp4 secondary test (input.nlfs) to test AB on T & S & pTracer
1597        with AB-2 code (so that it get tested).
1598    o model/src:
1599      - allow to apply Adams-Bashforth on Temp & Salt (instead of on gT,gS)
1600        with AB-2 code (previously only available with AB-3 code).
1601        Also move the code (call to ADAMS_BASHFORTH S/R) form thermodynamics.F
1602        to temp/salt_integrate.F (since the 2nd part of gt/sNm1 update is done
1603        there, by calling CYCLE_AB_TRACER).
1604    o pkg/generic_advdiff:
1605      - change Tracer argument (drop bi,bj indices) in S/R GAD_CALC_RHS,
1606        GAD_C2_ADV_R, GAD_U3_ADV_R, GAD_C4_ADV_R, GAD_DIFF_R, GAD_BIHARM_R
1607        + also in GMREDI_X/Y/RTRANSPORT ; and update corresponding calls in
1608        S/R temp/salt/ptracers_integrate.F
1609    o model/src & pkg/ptracers:
1610      - remove common block variables gT,gS (in DYNVARS.h), except when
1611         USE_OLD_EXTERNAL_FORCING is defined; update TAF storage accordingly.
1612      - remove common block variable gPtr.
1613    o model/src & pkgs:
1614      - change gTracer (and/or tracer) argument (drop bi,bj indices) in S/R
1615         ADAMS_BASHFORTH(2&3), CYCLE_(AB_)TRACER, FREESURF_RESCALE_G,
1616         IMPLDIFF, SOLVE_TRIDIAGONAL & _PENTADIAGONAL, GAD_SOM_ADVECT,
1617         GAD_ADVECTION, GAD_CALC_RHS, GAD_IMPLICIT_R, TIMEAVE_CUMUL_DIF_1T
1618      + change accordingly all calling S/R.
1619      - use local temperature/salinity/ptracer tendency array (without bi,bj)
1620        in S/R temp/salt/ptracers_integrate.F
1621    o pkg/seaice:
1622      - move computation of stress contributions to rhsU/V in s/r seaice_lsr
1623        to separate s/r seaice_lsr_rhsu/v in order to be able to re-use code
1624      - make u/vIceC local variables if SEAICE_CGRID is defined only to be used
1625        in seaice_lsr
1626      - seaice_lsr.F: make local 4D arrays UXX, VYY, etc 2D
1627        in s/r seaice_lsr_calc_coeffs
1628    o pkg/mdsio:
1629      - in MDS_READ/WRITE_FIELD, stop if file-name (+prefix) is too long
1630        (e.g., > MAX_LEN_MBUF -90 ) or, in INI_MODEL_IO, if mdsioLocalDir is
1631        too long (e.g., > MAX_LEN_FNAM/2 )
1632    
1633    checkpoint65b (2014/08/12)
1634    o pkg/matrix:
1635      - pass, as argument, updated tracer field to S/R MATRIX_STORE_TENDENCY_EXP
1636    o model/src:
1637      - fix initialisation of geothermalFile; compile geothermal-flux code in
1638        natl_box verification experiment.
1639    o model/src & pkg/down_slope:
1640      - push the k loop inside S/R TIMESTEP_TRACER (now called outside the k loop).
1641      - in dwnslp_apply.F, update tracer tendency instead of the future tracer
1642        field and call S/R DWNSLP_APPLY before TIMESTEP_TRACER; this affects
1643        results at machine truncation level: update output of experiments
1644        global_ocean.90x40x15.dwnslp (FWD) and lab_sea.noseaicedyn (AD).
1645    o pkg/diagnostics (Stats-Diags):
1646      - do not cumulate the full volume when DIAGNOSTICS_FILL is
1647        called with bibjFlg < 0 (no increment of the counter for 2D/3D diag);
1648        This fix the mean statistics when DIAGNOSTICS_FILL is called multiple
1649        times (but Min,Max and StD are still wrong).
1650    o model/src:
1651      - add geothermal flux forcing: read in ini_forcing.F as time-constant
1652        field "geothermalFlux" applied in S/R APPLY_FORCING_T (apply_forcing.F)
1653    o model/src:
1654      - move CYCLE_TRACER calls from tracers_correction_step.F to temp/salt/ptracer
1655        _integrate.F so that, when leaving S/R THERMODYANMICS, theta,salt and pTrac
1656        arrays are already updated while adjustments (filters, conv.adjustment) are
1657        still applied later, in S/R TRACERS_CORRECTION_STEP.
1658    o model/src:
1659      - store in common bloc array "rhoInSitu" the virtual potential temperature
1660        anomaly that is used to compute geopotential: this make the atmos code
1661        more similar to ocean code which already uses rhoInSitu in calc_phi_hyd.F
1662    o pkg/seaice/seaice_lsr.F
1663      - rename integer variable ilcall to ipass (that's what it is called
1664        in the residual diagnostics
1665      - change time stepping for NPSEUDOTIMESTEP > 2 (does not change the
1666        default) for improved non-linear convergence of the first few steps
1667      - adjust a few comments and add new ones to explain some of the store
1668        directives
1669    o pkg/generic_advdiff (& ptracers):
1670      - re-work the code to check for valid advection scheme and for minimum
1671        size of overlap (now stored in local common bloc in gad_advscheme.F)
1672    o pkg/seaice: another attempt to make the adjoint work for sea ice dynamics
1673      - re-initialize more variables in seaice_lsr: u/vIceC, u/vIceNm1
1674      - add an auxilliary variable "bet" and fix store directives and keys in
1675        seaice_lsr_tridiagu/v, this seems to do the trick (i.e. more or
1676        less exact gradients in my tests); but there are still
1677        recomputation warning (although gradients are sort of OK), when
1678        SEAICE_LSR_VECTORIZE is not defined, so this flag and
1679        SEAICE_LSR_VECTORIZE_ZEBRA are recommended for efficiency.
1680      - update verification experiments lab_sea.
1681      - change some comments in S/R seaice_calc_viscosities
1682    o model/src:
1683      - if staggerTimeStep=T, always apply exchange to velocity field in
1684        do_stagger_fields_exchanges.F instead of in do_fields_blocking_exchanges.F
1685        (independent of using multi-dim advection or not); no effect on FWD run
1686        but affects AD results (at machine truncation level): update output of
1687        experiment 1D_ocean_ice_column (ad: 12 digits), hs94.1x64x5 (ad,oad: 13.d)
1688        and isomip (oad: 12.d).
1689    o pkg/generic_advdiff:
1690      - stop if doAB_onGtGs is set to FALSE but ignored
1691      - refine warning related to stability of tracer time-stepping
1692        regarding internal wave dynamics.
1693      - setting of AdamsBashforth_T,S when doAB_onGtGs=F: remove condition
1694        on staggerTimeStep & implicitIntGravWave (will now get a warning
1695        if potentially unstable).
1696    o pkg/kl10:
1697      - add new pkg "kl10" for mixing due to internal wave breaking, from
1698        http://www.sciencedirect.com/science/article/pii/S1463500310000144
1699        (contribution from Jody Klymak), tested in verification experiment
1700        verification/internal_wave/input.kl10/
1701    o isomip experiment:
1702      - test pkg/shelfice with Non-Lin Free-Surf in one of the FWD set-up
1703        (input.htd) and update the output.
1704    o cd_code experiments:
1705      - use default cd_code options (#undef CD_CODE_NO_AB_MOMENTUM &
1706        #undef CD_CODE_NO_AB_CORIOLIS) in experiments: cfc_example (fwd)
1707        global_ocean.90x40x15 (ad & oad) and OpenAD (ad & oad) and
1708        update the corresponding output.
1709    o pkg/seaice:
1710      - reduce the number of include files and store directives in
1711        S/R seaice_lsr_tridiagu/v
1712      - change the order of loops in one case in S/R seaice_lsr_tridiagv
1713        (only for SEAICE_VECTORIZE_LSR_ZEBRA defined), which allows me to
1714        get rid off one store directive (a TAF bug?)
1715      - add one more instance of ifdef SEAICE_VECTORIZE_LSR_ZEBRA in
1716        S/R seaice_lsr_tridiagv to change the loop range for consistency
1717      - remove ilcall, m from parameter list of S/R seaice_lsr_tridiagu/v
1718      - fix a bug that affects the JFNK solver: replace sNx/y by i/jMax in
1719        S/R seaice_lsr_tridiagu/v (requires update of
1720        offline_exf_seaice/input.dyn_jfnk)
1721    
1722    checkpoint65a (2014/07/27)
1723    o model/src:
1724      - Non-Lin Free-Surf in p/z coords: allows hFacW,S to be larger than
1725        surrounding hFacC=1 @ edge of a step with different kSurfC on either side
1726        (topo in p-coords, ice-shelf in z-coords); update output of experiments
1727        tutorial_global_oce_in_p and isomip (both AD and OpenAD output).
1728    o model/src:
1729      - collect momentum forcing tendency into local 2-D array (passed as argument
1730        to apply_forcing S/R); this simplifies mom. Forcing diagnostics and CD_CODE
1731        parts in timestep.F (without CD_CODE_NO_AB_MOMENTUM defined = the default);
1732        affects results at machine truncation level (e.g., if using OBCS_SPONGE).
1733      - collect T & S forcing tendency into local 2-D array (passed as argument to
1734        apply_forcing S/R); add 3-D diagnostics for temp & salt forcing tendency.
1735        affects results at machine truncation level (e.g., ocean: if using
1736        SHORTWAVE_HEATING ; atmos: if using FrictionHeating or (atm_Rq<>0) moist
1737        correction due to vertical advection).
1738      - update output of experiments: fizhi-cs-32x32x40 (13 digits),
1739        global_ocean.cs32x15 (fwd: icedyn, seaice, thsice, all 3 @ 11d; adm & tml:
1740        seaice_dynmix & thsice, fwd grd @ 3 & 8), hs94.1x64x5 (ad grd @ 13),
1741        obcs_ctrl (ad & fwd grd @ 12 & 7).
1742    o pkg/ptracers & diagnostics:
1743      - use ptracers (short) name (instead of long one) to make ptracers diagnostics
1744        title (to avoid some unexpected truncation); sort out ptracers diags units.
1745      - collect ptracer forcing tendency into local 2-D array (passed as argument
1746        to apply_forcing S/R); add 3-D diagnostics for ptracers forcing tendency.
1747    
1748    checkpoint65 (2014/07/18)
1749    o pkg/fizhi:
1750      - add parenthesis around fizhi tendencies in fizhi_tendency_apply.F: this
1751        affects results at machine truncation level. Update output of experiments
1752        fizhi-cs-32x32x40 (12 digits for cg2d) & fizhi-cs-aqualev20 (13 digits).
1753    o pkg/seaice: more clean up
1754      - rename TAF common block tapes to be more consistent and remove
1755        unnecessary duplicates
1756      - add store directives to remove more recomputations, but use smaller
1757        tapes (and adjust keys) when SEAICE_LSR_ADJOINT_ITER is undefined.
1758        The idea behind this flag is to reduce the memory footprint when the
1759        adjoint of the LSR is not required. As of now, defining the flag
1760        SEAICE_LSR_ADJOINT_ITER increases 4 common block tapes for 2D field by
1761        a factor of SOLV_MAX_FIXED (=500 by default in SEAICE_SIZE.h).
1762        For experiment offline_exf_seaice, this means on a linux box with gfortran
1763        nearly a factor of 10 (but keep in mind there is mostly seaice code in
1764        this experiment):
1765        > size mitgcmuv_ad
1766        text    data        bss     dec        hex
1767        5100659 1216  220458952  225560827  d71c8fb
1768        5339425 1200 1868783272 1874123897 6fb4dc79 (SEAICE_LSR_ADJOINT_ITER)
1769        but only a moderate increase of 36% for global_ocean.cs32x15:
1770        text    data        bss     dec        hex
1771        6695027 1648 1014578664 1021275339 3cdf6ccb
1772        6695203 1648 1382505320 1389202171 52cd8afb (SEAICE_LSR_ADJOINT_ITER)
1773      - note: there are still recomputations in global_ocean.cs32x15 and
1774        offline_exf_seaice and the gradient agreement changes (gets a
1775        little worse) for global_ocean.cs32x15 (-> update output_adm.seaice.txt)
1776      - in general, the AD gradients still are wrong
1777    o OpenAD
1778      - clean up code_oad/ directories somewhat by moving files
1779        dontCompile, dontTransform, keepOriginal to OAD_support/
1780    o model/src:
1781      - using MOM fluxform and Non-Lin Free-Surf with momDissip_In_AB=F
1782        (not currently tested): add dissipation terms before NLFS rescaling of
1783        tendencies (previously done after).
1784    o pkg/diagnostics:
1785      - write stats-diags in ascii file with more digits (same as in monitor).
1786    o pkg/down_slope:
1787      - drop the bi,bj dimension of argument recip_hFac in S/R DWNSLP_APPLY; with
1788        NLFS (not tested), use new recip_hFac value in order to conserve tracer.
1789    o model/src:
1790      - new file "apply_forcing.F" containing all the code previously in
1791        external_forcing.F, but with new argument list: pass, as new argument,
1792        the current level tendency array to update (instead of a direct update
1793        of the common bloc array). Change the corresponding calls.
1794      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
1795        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
1796    o pkg/seaice/seaice_lsr, a little bit of clean up
1797      - rearrange some code blocks, so that now all calculations for
1798        setting up the right-hand-sides done within one single block
1799        (I find that easier to read and understand)
1800      - rearrange freedrift-code to reduce the number of ifdefs
1801      - adjust some indentations and comments
1802    
1803    checkpoint64z (2014/07/10)
1804    o model/src and several pkgs:
1805      - change argument list of all S/R called from external_forcing.F and
1806        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
1807        to pass, as argument, the current level tendency array to update
1808        (instead of a direct update of the common bloc array).
1809      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
1810      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
1811    o pkg/seaice/seaice_lsr.F
1812      - always initialize local arrays in seaice_lsr_tridiagu/v
1813      - add more local tapes to seaice_lsr_tridiagu/v
1814      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
1815        keep it in bi/bj loop; this seems to be essential
1816      - gradients are still wrong but only by 4-7 orders of magnitude
1817        instead of 15 orders of magnitude, lab_sea improves a little
1818    o pkg/seaice
1819      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
1820        generates unnecessary code in seaice_lsr_ad
1821      - add more store directives in seaice_lsr to avoid unnecessary code
1822        in seaice_lsr_ad
1823      - exclude some residual computations in seaice_lsr when
1824        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
1825        in seaice_lsr_ad
1826      - add more storing, a new tape (model/src/the_main_loop.F) and
1827        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
1828        and klockey should be checked by a specialist)
1829      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
1830        and update lab_sea after previous changes in pkg/seaice below
1831    o pkg/autodiff:
1832      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
1833        viscFacInAd : run time parameters allowing for adjoint switches
1834        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
1835    o pkg/ecco:
1836      - introduce cost_gencost_boxmean.F that computes a box mean
1837        temperature (for use in adjoint sensitivity studies).
1838    o model/src/set_defaults.F : initialize viscFacAdj to 1.
1839    o pkg/mom_common/mom_calc_visc.F:
1840      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
1841    o pkg/seaice/seaice_summary.F:
1842      - statement for SEAICEadjMODE now in autodiff_readparms.F
1843    o pkg/seaice:
1844      - remove some store directives and add new ones in an effort to get
1845        finally rid off the recomputation warnings. This is successful
1846        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
1847        defined (i.e. no extensive recomputation warnings left), but there
1848        are still too many recomputations on the solver iteration level
1849      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
1850      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
1851        SEAICE_SIZE.h
1852      - add a store directive in S/R seaice_calc_viscosities
1853    o pkg/seaice (ITD code):
1854      - fix definition of Hlimit for multi-threaded case
1855      - use double precision arithmetic to compute Hlimit: this affects results;
1856        update output of experiment seaice_itd.
1857    o replace content of verification/seaice_itd
1858      - instead of a 1D column use the configuration of offline_exf_seaice
1859        to test the ice thickness distribution code with ridging
1860      - this is a first shot at this experiment
1861      - change of some defaults of ridging parameters SEAICEhStar (from
1862        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
1863        and lot of new comments.
1864    
1865    checkpoint64y (2014/06/20)
1866    o pkg/seaice/seaice_reg_ridge.F:
1867      - modify the regularization of very small volumes of ice; only check
1868        total volume HEFF, and do not apply correction to individual ice
1869        classes because that leads to funny patterns in the heat and fw-fluxes
1870        into the ocean. Adjust seaice_itd/results/output.txt
1871      - replace nITD by SEAICE_multDim in loop-ranges
1872    o pkg/exf:
1873      - add code to process the case field period = -12. with UV interpolation.
1874      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
1875        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
1876    o verification/global_with_exf:
1877      - switch all fields period to -12. (was previously untested) in input/data.exf
1878        (but keep secondary test ".yearly" unchanged); update the reference output.
1879    o pkg/cal:
1880      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
1881    o pkg/exf:
1882      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
1883        to replace logical switch "exf_verbose"
1884      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
1885    o pkg/sbo:
1886      - update from Katherine Quinn: evaluate mass directly from density and SSH
1887        (budget using Finite Volume method) instead of from bottom pressure.
1888      - allow testreport to collect few selected SBO output ; tested in exp.
1889        global_ocean.90x40x15 (after updating the results, to include SBO output).
1890      - fix some multi-threading issues (in output part).
1891    o model/src & most packages:
1892      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
1893      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
1894        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
1895        "data.{pkg}" exist ; and leave the S/R (return) just after.
1896      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
1897        + call LAND_READPARMS from packages_readparms.F
1898    o pkg/seaice:
1899      - remove code that resets useThSice in S/R seaice_readparms and
1900        replace it by a warning in S/R seaice_check
1901      - remove parameter MULTDIM, replace with nITD and runtime
1902        parameter SEAICE_multDim (still hard-wired to nITD if
1903        SEAICE_ITD is defined)
1904    
1905    checkpoint64x (2014/05/24)
1906    o verification/lab_sea:
1907      - update adjoint and TLM output following changes to pkg/salt_plume
1908      - un-do the update after putting back local recip_Cp in few places.
1909    o pkg/salt_plume: modifications by An Nguyen:
1910      - add capability to do brine rejection (salt-plume) as function of
1911        volume+tracers (instead of only salinity tracer).
1912      - conserve volume by exchanging volume from each kLev to above to
1913        accommodate in-coming brine volume
1914      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
1915      - switch KPP surf buoyancy due to brine forcing to 3-d
1916        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
1917      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
1918      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
1919        in East/West Arctic.
1920    o pkg/sbo:
1921      - incorporate modifications from Katherine Quinn to enable the use of sbo
1922        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
1923        output for future testreport verification (unfinished).
1924    o pkg/atm_phys:
1925      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
1926        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
1927        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
1928    o pkg/seaice
1929      seaice_calc_ice_strength.F: modify expression to avoid divisions
1930        (affects truncation)
1931      seaice_do_ridging.F: clean up the insectarium
1932      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
1933      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
1934      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
1935      - add some debugging information and error messages (warnings)
1936    o model/src: modifications relatd to atmosphere p*:
1937      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
1938      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
1939        of vertical profile tRef in geopotential background and anomaly.
1940      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
1941        and pkg/atm_phys.
1942      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
1943        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
1944    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
1945    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
1946        not used right now, but can be used in BGC packages to fix conservation.
1947    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
1948        other packages too.
1949    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
1950        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
1951    o model/src:
1952      - since we have several heat capacity (even in model/src), define "recip_Cp"
1953        as local variable (no longer in common block) to avoid any confusion.
1954      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
1955    o pkg/exf:
1956      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
1957        air density as function of air Temp, Humidity and atm pressure.
1958    
1959    checkpoint64w (2014/05/02)
1960    o verification:
1961      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
1962        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
1963        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
1964        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
1965        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
1966    o model/src: for atmosphere in p* coords:
1967      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
1968      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
1969        but not yet activated.
1970    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
1971      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
1972      - this changes the results (but not for any verification experiment, because
1973        none tests this), but avoids having an extra field in the restart files
1974    o pkg/seaice: remove global variable TICE (not needed)
1975      - replace by TICES or local variable where necessary (cost_seaice_test,
1976        seaice_diagnostics_state)
1977      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
1978      - use specific read/write routines for reading and writing individual leves
1979        of a multilevel field
1980    o pkg/ctrl & model/inc:
1981      - move additional anomaly fields of control vars (related to options:
1982         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
1983        from DYNVARS.h into new header file: CTRL_FIELDS.h
1984    o pkg/seaice: some small modifications to the ridging code
1985      - make fw2ObyRidge a global variable and add the freshwater flux to
1986        seaice_growth
1987      - pass actual thickness from seaice_prepare_ridging, so that it is
1988        computed only in one place and compute it in the same way as in
1989        seaice_growth
1990      - initialise more fields in seaice_do_ridging that where cause floating
1991        point exceptions over land
1992    o pkg/seaice: preparations for ridging code and first real ridging code
1993      - move most of "PART 1" of S/R seaice_growth into a new and separate
1994        S/R seaice_reg_ridge that will both regularize the state variable after
1995        advection call the actual ridging routine;
1996      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
1997        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
1998      - remove ridging code from seaice_advdiff
1999      - clean up remaining part 1 of seaice_growth in an attempt to make it
2000        more readable (this is probably subjective)
2001      - call seaice_itd_redist once in the initialisation phase to have the initial
2002        conditions in the correct category
2003      - finally: add new ridging routine for ITD code
2004    
2005    checkpoint64v (2014/04/11)
2006    o pkg/ecco:
2007      - add runtime parameters mdt[start,end]date[1,2]
2008      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
2009    o pkg/seaice:
2010      - make deltaC a global variable, so that it can be used in ridging code
2011      - first step towards ridging: introduce new routines that compute
2012        ice strength based on ridging parameters
2013      - add diagnostic for HSNOWITD
2014      - add opnWtrFrac as a global variable (required for ridging scheme)
2015    o pkg/salt_plume + pkg/seaice/seaice_growth.F
2016      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
2017        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
2018    o verification/hs94.1x64x5:
2019      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
2020      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
2021    o autodiff:
2022      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
2023        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
2024        For now, only in pkgs used in verification/hs94.1x64x5.
2025      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
2026        which are specific to TAF/TAMC).
2027      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
2028        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
2029        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
2030      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
2031        building mitgcmuv_ad (make adAll).
2032    o pkg/ecco:
2033      - cost_gencost_seaicev4.F:
2034         reformulate proxy cost as function of sst and local param SEAICE_freeze
2035         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
2036      - add stop statement if old names siv4-[sst,vol] are used
2037      - add snapshots + cost reports for atmospheric longwave
2038      - remove factor 0.1 in front of wtau[u,v]
2039      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
2040         ALLOW_TMI_SST_COST_CONTRIBUTION
2041    o pkg/atm_phys:
2042      - add some diagnostics for Short-wave and for convection S/R.
2043    o pkg/seaice/seaice_growth:
2044      - fix a bug in the lateral melt parameterization for SEAICE_ITD
2045        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
2046      - rearrange loop order for better vector code in the same code block
2047      - rewrite the floeDiameter formula to have fewer divisions
2048      -  (miraculously) none of this changes the results of seaice_itd
2049    o pkg/smooth:
2050      - move param smooth2Ddiffnbt to pkg/ecco
2051    o pkg/salt_plume:
2052      - salt_plume_frac.F:
2053         clean up local param names
2054         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
2055    o pkg/rw:
2056      - add RS version of S/R READ_MFLDS_LEV.
2057    o pkg/streamice:
2058      - fix the restart test by writing/reading pickup_streamice files.
2059    o pkg/seaice:
2060      - refine checks for jfnk-related parameters
2061      - comment out if statement with SEAICEuseIMEX parameter as long as there
2062        is no IMEX code to avoid confusion and surprises
2063    
2064    checkpoint64u (2014/03/07)
2065    o verification/MLAdjust:
2066      - rename secondary test suffix:
2067         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
2068         0.leithD -> AhFlxF  + switch to flux-form
2069         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
2070         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
2071    o pkg/mom_vecinv:
2072      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
2073        to be before mom_calc_visc.F)
2074      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
2075      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
2076        this is simpler for the adjoint and for diagnostics.
2077    o model/src + pkg/momentum:
2078      - add input files for  2-D additional Western and Southern cell-edge wall
2079         (e.g., to add "thin-wall" where it is =1).
2080      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
2081        using 2nd hFacZ that is computed from initial (fix domain) hFac
2082      - known limitations of thin wall implementation: not yet coded for sigma
2083        coords; not working with CD-scheme neither.
2084    o pkg/seaice:
2085      - rename recently introduced parameters from (wrong name) AB to
2086        BDF (backward difference time discretisation)
2087      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
2088    o tools/adjoint_options:
2089      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
2090    
2091    checkpoint64t (2014/02/01)
2092    o pkg/ecco
2093      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
2094        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
2095      - replace hard-coded record number and period which only work for monthly
2096        with read-in runtime param that works for other periods (month,day,year)
2097    o pkg/thsice
2098      - corrected store directive fixes thsice adjoint gradient checks
2099    o genmake2 & testreport:
2100      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
2101        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
2102        Update testreport accordingly. No need to set "export OPENAD=true"
2103        in adjoint_options/adjoint_oad anymore (will be removed later).
2104    o pkg/shelfice:
2105      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
2106        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
2107        so that surface forcing applies to k=kSurf if using pkg/shelfice.
2108    o pkg/ctrl, pkg/grdchk, pkg/ecco:
2109      - Changes to make GENARR more modular (i.e. invisible if not used)
2110    o model/src/temp_integrate.F and salt_integrate.F
2111      - re-include store directives that were removed on Dec 27th.
2112    o model/src/external_forcing_surf.F
2113      - add storage directives for EmPmR and PmEpR to avoid recomputation of
2114        seaice_model in the adjoint that is problematic when seaice_model is
2115        turned off in the adjoint. The resolved issue dated back to July when
2116        EXTERNAL_FORCING_SURF call was moved.
2117        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
2118    o pkg/exf/exf_check.F
2119      - fix a small bug again (originally found by Wentao Liu, now found again)
2120      - streamline error output
2121    o pkg/streamice and aim_v23:
2122      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
2123        Apple's /usr/bin/cpp knows what to do:
2124        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
2125        Target: x86_64-apple-darwin13.0.0
2126    
2127    checkpoint64s (2014/01/05)
2128    o tools/adjoint_options:
2129      - switch to fastopt.net TAF server (instead of default fastopt.de) for
2130        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
2131    o model/src:
2132      - remove some unnecessary TAF storage directives in forward_step.F and
2133        in dynamics.F (note: not always removed by TAF, e.g., double storage
2134        of kappaRU,kappaRV in former version of dynamics.F).
2135    o model/src & pkg/ptracers:
2136      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
2137        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
2138        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
2139      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
2140      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
2141      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
2142    o useSingleCpuInput separates single-CPU input from single-CPU output;
2143        for now only implemented for in exf_interp_read.F
2144    o verification/advect_xy:
2145      - fix missing EXCH call in local version of ini_salt.F and update output.
2146    o momentum diagnostics:
2147      - fix which deltaT is used in Total-Tendency diagnostics.
2148      - fix typo in diagnostics for momentum tendency from AB.
2149    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
2150        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
2151    
2152    checkpoint64r (2013/12/08)
2153    o verification/*/results:
2154      - Update reference output of experiments that were passing with just 13 digits
2155         (make it easier to detect future changes in results)
2156    o model/src & pkg/ptracers:
2157      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
2158        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
2159        to inside ptracers_integrate.F ; remove ptracers_advection.F
2160    o coupling interface pkgs:
2161        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
2162      - change the config check to test the agreement of Ocean Depth
2163        with ATM land/sea mask (instead of ATM orography);
2164      - send to coupler the number of coupler time-steps to do for this run:
2165        this allows to check for consistency and don't need anymore to be
2166        specified in parameter file "data";
2167      in coupler:
2168      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
2169      - improve report to log-file of config setting (pass log-file unit to few S/R)
2170    o pkg/compon_communic:
2171      - add coupling send/receive for non-tiled integer vector;
2172      - add S/R to check and stop if any proc has an error (similar to
2173        eesupp/src/stop_if_error.F but single thread and across Comm_World).
2174    o pkg/exch2:
2175      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
2176        through list of all tiles my proc owns.
2177    o model/src:
2178      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
2179        from rTrans) to simplify dependencies (no need to store rTrans anymore in
2180        calling S/R); this affects AD results at machine truncation level:
2181        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
2182        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
2183    o tools/build_options:
2184      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
2185    o coupling interface pkgs:
2186        [compon_communic, atm_compon_interf & ocn_compon_interf]
2187      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
2188        to each S/R that needs it; remove un-used variables.
2189      - change component tile registration (cpl_register.F in both compon_interf
2190        and mitcomponent_tile_register.F) to pass the full list of tiles
2191        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
2192      - with pkg/exch2: adopt the same convention used for I/O to define mapping
2193        towards coupler global array (unless W2_useE2ioLayOut=F):
2194         a) can now use different tiling between atm & ocn comp.
2195         b) no needs to modify the run-Off map when changing tiling (was needed
2196            even if using the same tiling between atm & ocn).
2197         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
2198            full land tiles); not yet tested.
2199      - check for valid mapping from comp. tile to coupler global array
2200      - improve report of tile registration results to log file.
2201    o pkg/exch2:
2202      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
2203        tile-registration (CPL_REGISTER);
2204      - activate (un-comment) definition and setting of "W2_tileIndex" list to
2205        store the local bi,bj indices of each tile;
2206      - also print bi,bj in local report to log file;
2207      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
2208        Jun 2009 modif of pkg/exch2).
2209    o testing on baudelaire:
2210      - run 2 tests at a time: no significant slow down (since enough cpu) and
2211        get the full set of test done earlier
2212      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
2213    o model/src/thermodynamics.F and routines called from it:
2214      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
2215        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
2216        velocity (outp) by adding bolus velocity.
2217      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
2218        mass transport from velocity + lateral grid cell area
2219      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
2220      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
2221     in thermodynamics.F
2222      - remove k from thermodynamics.F and move it to temp_integrate.F
2223        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
2224        loop).
2225      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
2226        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
2227        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
2228        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
2229      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
2230        global_ocean.90x40x15, tutorial_global_oce_biogeo and
2231        tutorial_tracer_adjsens (+ TLM output).
2232    o tools/OAD_support and (verification/*/) code_oad:
2233      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
2234        module conversion ; remove unneeded CPP_EEOPTIONS.h.
2235      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
2236        version (closer to model/inc/CPP_OPTIONS.h).
2237    o model/src:
2238      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
2239        retired list of parameters (routine FREEZE has been replace by surface
2240        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
2241    o pkg/gmredi:
2242      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
2243        velocity (same scheme but affects machine truncation) for GM_AdvForm.
2244      - update output of FWD experiments: front_relax.bvp,
2245        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
2246    
2247    checkpoint64q (2013/11/17)
2248    o verification:
2249      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
2250        tutorial_global_oce_biogeo and global_ocean.90x40x15.
2251      - generate new output (growth & melt) for seaice_itd experiment after
2252        updating the input pickup_seaice files (previously wrong).
2253    o pkg/cost:
2254      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
2255        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
2256        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
2257          cannot be applied to var in common block).
2258        o allows to get results independent of tile-per-proc setting (if using
2259          slower GLOBAL_SUM_SEND_RECV option).
2260      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
2261        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
2262        forward gradients: update output).
2263      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
2264        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
2265    o pkg/mom_common:
2266      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
2267        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
2268        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
2269        ensure that all field value that are used are set.
2270    o tutorial_deep_convection (smag3d):
2271      - add missing scaling in mom_calc_smag_3d.F;
2272      - set smag3D_coeff in input.smag3d such that results do not change.
2273    o pkg/dic:
2274      - change dic_cost.F to compute cost on each tile first and then apply
2275        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
2276        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
2277      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
2278    o eesupp/src & pkg/mdsio:
2279      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
2280        (from pkg/mdsio) since they are no longer used for tape IO.
2281      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
2282        (+ keep a copy in pkg/atm_ocn_coupler).
2283    o verification/isomip:
2284      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
2285    o tools/build_options:
2286      - optfile linux_amd64_ifort11, fast (no ieee) case:
2287        to get a working restart for all experiments, add "-fp-model source"
2288        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
2289    
2290    checkpoint64p (2013/10/20)
2291    o pkg/autodiff:
2292      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
2293        criteria, return to simple (default) tape IO format.
2294    o pkg/mdsio (+ eesupp/src):
2295      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
2296        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
2297      - fix globalFile and singleCpuIO options using simpler global mapping.
2298      - new pairs of scatter/gather vector S/R (one for each type, generated from
2299        template) corresponding to simpler global mapping.
2300      - adread_write.F: switch to new S/R (but leave old calls commented) and write
2301        to globalFile when parameter globalFiles is set to True.
2302      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
2303    o pkg/autodiff:
2304      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
2305        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
2306        missing, just add a STOP if array type do not match.
2307    o pkg/exf:
2308      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
2309         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
2310         and rename array obsSIce to exf_iceFraction.
2311    o tutorial_deep_convection:
2312      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
2313        for now all in this exp. code dir.
2314      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
2315        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
2316    o eesupp/src:
2317      - added SINGLE_DISK_IO option because reading of parameter files on
2318        very large number of processors did not work with existing set-up
2319    
2320    checkpoint64o (2013/09/25)
2321    o pkg/atm_phys & atm_compon_interf:
2322      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
2323    o tools/build_options:
2324      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
2325        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
2326        remove CPP setting (was identical to genmake2 default).
2327    o pkg/gmredi & model/src: Some updating and work done on the residual model.
2328      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
2329      - fixed up the calculation of the eddy stress and how it is added to the
2330        external forcing via taueddy_external_forcing.F
2331      - at the moment, it is very experimental and only works with the variable eddy
2332        diffusivity calculated in gmredi_k3d.F
2333    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
2334        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
2335    o testreport (& tools/do_tst_2+2):
2336      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
2337    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
2338      - remove CPP='cpp -traditional -P' (this is genmake2 default)
2339      - add switch (for big setups) to use 'medium' memory-model (but leave it
2340        commented out for now). Note: needed with FC 19 to compile big setups.
2341    o pkg/atm_compon_interf:
2342      - regroup per field origin (model & pkgs) the coupling storage routines
2343         (which accumalate in time each coupling field)
2344      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
2345        update accordingly + simplify aim_do_physics.F
2346    
2347    checkpoint64n (2013/08/26)
2348    o pkg/bbl:
2349      - update formulation to reduce dispersion of tracer properties in bbl
2350      - replaced horizontal and vertical transport parameters with velocities
2351      - changes results for verification/global_with_exf.yearly
2352    o verification/halfpipe_streamice:
2353      - change to matrix construction; update both Fwd & AD output.
2354    o verification/tutorial_tracer_adjsens:
2355      - OpenAD test: switch to vector-invariant momentum since fluxform with
2356        rStar causes problems with OpenAD; update output.
2357    o tools:
2358      - genmake2: define a common prefix for all temp-file names ; move them
2359        to local /tmp disk (but would be easy to move them back);
2360      - xmakedepend: apply the same switch for temp-files.
2361    o pkg/offline:
2362      - changes for use with rStar (NLFS): assume that we continue to provide
2363        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
2364        output files) and apply r* scaling at each time-step (function of the time
2365        varying Eta field); use normal pickup files (needed for restart with NLFS).
2366    o adjoint with OpenAD:
2367      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
2368        package openad.  This package has to be compiled for all runs with OpenAD
2369        instead of specifying code_oad_all as a modification directory.
2370      - link the fortran templates from tools/OAD_support to the build directory
2371        for preprocessing to avoid conflicts between different setups compiled
2372        simultaneously and simplify cleanup.
2373    o pkg/exf:
2374      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
2375        main model or other pkgs are exchanged in EXF_MAPFIELDS).
2376    o model/src:
2377      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
2378        (similar to do_fields_blocking_exchanges.F).
2379    o tools/genmake2:
2380      - remove TAF output src code just before calling staf (when not doing a fresh
2381        built, will stop if things go wrong with staf).
2382      - fix target "adobj" (left from TAF version-2 transition)
2383    o pkg/diagnostics:
2384      - add a parameter to track the status of pkg/diagnostics activation;
2385        this replace/extend the use of logical param "settingDiags" (to check
2386        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
2387        New S/R to print error message and stop when pkgStatus is not right.
2388      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
2389    
2390    checkpoint64m (2013/08/13)
2391    o model/inc:
2392      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
2393        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
2394    o pkg/kpp & aim_v23:
2395      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
2396    o pkg/seaice:
2397      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
2398        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
2399      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
2400    o eesupp/src:
2401      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
2402        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
2403    o switch to TAF version-2:
2404      - add flow directives to "freeze" naming convention for ad-routines that
2405        are used in I/O routines of adjoint state and associated common blocks
2406        that are used in adcommon.h (backward compatible with version-1)
2407      - update all ad-optfiles (in tools/adjoint_options + few local to some
2408        verification exp) to switch to latest TAF version (currently 2.5.5);
2409        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
2410        out except for diva).
2411      - the major change with TAF version-2 is that both the differentiated
2412        routines and the forward routines (new) are returned as part of the TAF
2413        output source code. Update genmake2 accordingly.
2414      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
2415        with version-2 when compared to TLM or FWD gradient); other experiments
2416        output show minor changes (machine truncation level); update the few AD &
2417        TLM output with 12 matching digits only (some prior to version-2 switch).
2418    
2419    checkpoint64l (2013/08/05)
2420    o model/src:
2421      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
2422      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
2423        when using TAF but only if using OpenAD.
2424    o pkg/mom_common+fluxform+vecinv:
2425      - always set horiz. viscosity arrays to background value before calling
2426        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
2427        only when using variable horiz. viscosity (useVariableVisc=T);
2428      - simplify mom_vecinv.F (only 1 block for momViscosity).
2429    o pkg/mom_common: variable horiz. viscosity in NH code
2430      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
2431        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
2432      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
2433        useBiharmonicVisc & useVariableVisc.
2434      - fix old bug (already in 1rst implementation of variable horizontal viscosity
2435        in calc_gw.F, version 1.27, 2006/06/20):
2436        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
2437        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
2438      - change background horiz viscosity in vertical momentum (gW) to always be
2439        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
2440        any type of variable viscosity, e.g., viscAh/4Grid)
2441      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
2442        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
2443        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
2444        default viscAh,viscA4 is zero).
2445    o model/src:
2446      - extend length of drC & recip_drC from Nr to Nr+1.
2447    o Divided Adjoint (DIVA) with MPI:
2448      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
2449      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
2450        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
2451    
2452    checkpoint64k (2013/07/23)
2453    o tools/OAD_support:
2454      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
2455        and remove it from genmake2.
2456    o tools/build_options:
2457      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
2458        MPI_HEADER_FILES list (let genmake2 find the missing headers)
2459    o verification/halfpipe_streamice:
2460      - change to driving stress formulation; update both Fwd & AD output.
2461    o tools/genmake2 and Divided Adjoint with MPI:
2462      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
2463      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
2464      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
2465        Makefile, which is set by genmake2, and check which mpi-headers are needed.
2466        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
2467      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
2468    o testreport:
2469      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
2470        perform additional runs (number of additional runs is "add_DIVA_runs" taken
2471        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
2472    o verification/lab_sea (AD test):
2473      - change to test Divided Adjoint Run in this set-up (both standard AD test
2474        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
2475    o pkg atm_ & ocn_compon_interf:
2476      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
2477        staggerTimeStep implementation) and disable (retired) corresponding
2478        parameter.
2479    o pkg/offline:
2480      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
2481      - add S/R OFFLINE_CHECK to print offline parameter summary
2482        and stop if loading a file that is not used;
2483      - enable to calculate GMRedi tensor, KPP mixing and convective index
2484        when the corresponding file(s) is/are not specified (but pkg is used).
2485      - comment out resetting of monitorFreq (to endTime) since it still useful
2486        for monitoring CFL numbers and checking offline fields.
2487    o OpenAD:
2488      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
2489        smaller standard output) and generate new (smaller) output (on baudelaire
2490        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
2491    o model/src:
2492      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
2493        (where external_forcing_adjust was called) and change list of arguments;
2494      - merge external_forcing_adjust.F into external_forcing_surf.F
2495      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
2496        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
2497        previously in file "balance_relax.F", now removed); remove corresponding
2498        arrays in FFIELDS.h.
2499      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
2500        a hack for getting back surfaceForcingS (loaded from file) when using
2501        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
2502      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
2503        (was getting only 11 digits for AD-grad, due to different truncation
2504         error in AD code).
2505    
2506    checkpoint64j (2013/07/04)
2507    o pkg/offline:
2508      - to enable the use of other features with pkg offline (e.g., obcs),
2509        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
2510      - comment out "allowFreezing" (now active) in 2 offline testing exp.
2511    o pkg/exf ALLOW_RUNOFTEMP
2512      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
2513      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
2514      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
2515    o pkg/atm_phys:
2516      - allows to add some damping on uVel,vVel (strength only function of k).
2517    o verification, ad-tests:
2518      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
2519        global_ocean_ebm and offline_exf_seaice.thsice.
2520    o verification/halfpipe_streamice:
2521      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
2522        flux input boundary conditions to be ignored; a fix for this bug changed
2523        verification results for forward test.
2524      - add adjoint test.
2525    o pkg/ptracers:
2526      - allow to restart without SOM pickup (resetting SOM to zero).
2527    o pkg/gmredi:
2528      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
2529      - It uses mixing length theory and suppression by steering level effects to
2530        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
2531        to JPO, for more details).
2532      - It also uses the diffusivity to calculate an eddy induced streamfunction
2533        based on a PV closure (rather than a buoyancy closure as in GM).
2534      - New files added to pkg/gmredi:
2535        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
2536          induced overturning streamfunction (called from gmredi_calc_tensor)
2537        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
2538          for use in gmredi_k3d
2539        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
2540          the eddy diffusivity
2541    
2542    checkpoint64i (2013/06/18)
2543    o pkg/cheapaml:
2544      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
2545        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
2546        with pkg/cheapaml.
2547    o utils/python: add subpackage for cubed sphere function, first example is
2548        simple cs.pcol to plot 2D fields on a map
2549    o pkg/streamice:
2550      - This is a new package in MITgcm, which solves dynamic equations for ice
2551         sheets and ice streams
2552      - At the moment it is independent of atmosphere/ocean dynamics, or any
2553        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
2554        ed that this will change)
2555      - There is a new verification exercise that tests it, halfpipe_streamice,
2556        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
2557        rectangular embayment
2558      - halfpipe_streamice is forward-only for now, will have TAF test soon
2559      - for questions, email dgoldber@mit.edu
2560    o pkg/thsice:
2561      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
2562        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
2563      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
2564         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
2565      - allow precip from pkg/cheapaml to make snow over seaice.
2566    o pkg/cfc:
2567      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
2568      - remove atmos CFC 2-D arrays from common bloc (now local variables)
2569      - change some hard-coded constant to run time parameter for reading and
2570        and interpolating atmospheric CFC ; keep same default as previously.
2571      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
2572      - put arguments in standard order: myTime, myIter, myThid
2573      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
2574        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
2575      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
2576      - new routine to print summary of CFC params and check for consistency.
2577    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
2578      similar to thsice_advdiff.
2579      Note that for the B-grid case the routine parameters uc/vc are overwritten.
2580    o pkg/cfc:
2581      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
2582        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
2583      - fix interpolation of atmphspheric CFC between Sorthern and Northern
2584        hemisphere value.
2585    o pkg/seaice:
2586      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
2587    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
2588                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
2589      - requires an additional time level that is stored in the pickup
2590      - you can start with AB2 from a pickup without this time level with
2591        pickupStrictlyMatch = .false.
2592    
2593    checkpoint64h (2013/05/26)
2594    o pkg/cheapaml:
2595      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
2596        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
2597      - consistent treatment of uWind,vWind location: assume everywhere in
2598        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
2599        (Note: was already the case for Tair,Qair advection);
2600        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
2601      - compute diabatic forcing only in the interior (excluding overlap regions)
2602      - fill in array "Qsw" (for short-wave heating);
2603      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
2604        before any update (consistent with MITgcm state var diagnostics);
2605      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
2606        non periodic ; + adjusted for uWind,vWind (C-grid).
2607    o pkg/seaice:
2608      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
2609        add explicitly pkg/exf in experiments that currently use pkg/seaice.
2610      - allows to compile pkg/seaice without pkg/exf.
2611    o tools/OAD_support:
2612      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
2613        of array "ourStepOf" in function rvNextAction (revolve.F90).
2614    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
2615      - change pkg name (to be used with other atmospheric physics pkg)
2616        but by-pass CVS when making the new pkg so that we keep the CVS history.
2617    o pkg/offline:
2618      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
2619        (previously called from pkg/dic_surfforcing_init.F)
2620    o model/src:
2621      - re-order sequence of calls within packages_init_variables.F, using
2622        standard order, except for:
2623         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
2624         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
2625    o new pkg: atm_phys
2626      - add entry point and source code (previously in contrib
2627          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
2628        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
2629      - re-order sequence of calls within packages_readparms.F,
2630         packages_init_fixed.F and packages_write_pickup.F
2631        (but skip packages_init_variables.F because of TAF issues).
2632      - update contrib/*/atm_gray/ experiment.
2633    o pkg/seaice (ITD code):
2634      - simplify and fix the writing of pickup-files for ITD case
2635    o pkg/seaice (ITD code):
2636      - introduce floe size dependent lateral melt for ITD case;
2637      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
2638      - update seaice_itd experiment main output.
2639    o pkg/thsice:
2640      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
2641        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
2642        changed accordingly pkg/atm2d.
2643    
2644    checkpoint64g (2013/05/01)
2645    o pkg/exf ALLOW_RUNOFTEMP
2646      - if defined,  river and glacier runoff temperature can be read-in from
2647        runoftempfile; runoftempfile needs to have same format as runofffile
2648    o pkg/thsice (& pkg/bulk_force):
2649      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
2650        for energy content of Precip + RunOff & Evap (like with pkg/exf).
2651      - change computation domain to always be the interior (without overlap).
2652      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
2653    o verification/tutorial_global_oce_biogeo:
2654      - add preliminary OpenAD setup (still has problems)
2655    o pkg/seaice:
2656      - turn some parameters for choosing the convergence criterion of
2657        the inexact Newton method (JFNK) into runtime parameters for convenience
2658      - clean up seaice_calc_viscosities.F: remove/retire two options for
2659        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
2660        the results of lab_sea/input because a division has been replaced by
2661        a multiplication with the reciprocal (sumNorm)
2662      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
2663        convergence of solver (changes results, of course), and to test some
2664        new features
2665    o model/src:
2666      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
2667      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
2668      - move forcing adjustment (balancing surface forcing) in specific S/R
2669        where might also be applied exchanges (if needed) to forcing arrays.
2670    o pkg/shelfice:
2671      - allow to specify the Ice-Shelf mass per unit area (instead of
2672        shelficeLoadAnomaly) and do the conversion from one to the other
2673      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
2674        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
2675        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
2676        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
2677      - update isomip experiment forward output (get machine truncation error
2678        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
2679    o verification/offline_exf_seaice:
2680      revise data.seaice in input.thermo and input_ad and update results accordingly
2681        HO = 0.2, SEAICE_areaLossFormula = 2,
2682        SEAICE_growMeltByConv = .TRUE.,
2683        SEAICE_doOpenWaterMelt = .TRUE.,
2684      Improve consistency with input.thsice and fix the spurious 500m ice corners
2685    o verification/global_ocean.cs32x15:
2686      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
2687        in icedyn (thsice+seaice-dyn) test and update output.
2688    o verification/offline_exf_seaice:
2689      - adjust list of tested variables (with testreport) and update
2690        standard test output with better slection of monitored fields.
2691    o pkg/cd_code:
2692      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
2693        experiment lab_sea.hb87
2694    o tools/genmake2:
2695      - change default makedepend from the system default to tools/xmakedepend:
2696        When no makedepend is specified, select tools/xmakedepend it the test pass,
2697        otherwise select the system default (if exist and pass the test) or
2698        try to build cyrus-makedepend ; stop if none of the 3 works.
2699    o pkg/exf & pkg/thsice:
2700      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
2701        for energy content of Precip + RunOff & Evap. Assumes:
2702       1) Rain has same temp as Air.
2703       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
2704       3) Run-Off comes at the temp of surface water (with same Cp)
2705       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
2706        put directly into Latent Heat flux & should use water-vapor heat capacity.
2707       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
2708        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
2709    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
2710        (compile when SEAICE_ALLOW_JFNK is defined)
2711    o pkg/thsice:
2712      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
2713        implementation): move THSICE_AVE call after the advection (called directly
2714        from thsice_do_advect.F).
2715    o verification/global_ocean.90x40x15 and OpenAD:
2716      New experiment for OpenAD is identical to the one in input_ad except that
2717        multiDimAdvection=.FALSE.,
2718      There is still an issue with this.
2719    o pkg/thsice:
2720      - account for ice velocity (ocean relative velocity) in turbulent heat flux
2721        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
2722        and offline_exf_seaice (main test).
2723    
2724    checkpoint64f (2013/03/31)
2725    o verification/OpenAD:
2726      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
2727    o verification/isomip, pkg/shelfice and OpenAD:
2728      - add OpenAD setup to this exp and make shelfice package work with OpenAD
2729    o verification/tutorial_global_oce_biogeo:
2730      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
2731    o verification/offline_exf_seaice:
2732      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
2733    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
2734      - add OpenAD setup to this exp and make ptracers package work with OpenAD
2735    o pkg/seaice/seaice_evp.F:
2736       mask the asymmetric contribution of the ice-ocean stress (when
2737       the turningAngle is non-zero) over open water to avoid stripes
2738       in the EVP-solutions after many EVP-substeps. This does not change
2739       the verification experiment (because turningAngle=0 in that experiment),
2740       but will affect other EVP solutions with turningAngle.ne.0
2741    o verification, AD & TLM output:
2742      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
2743        additions and multiplications which affect results at machine truncation
2744        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
2745        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
2746        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
2747        digits of matching.
2748    o pkg/seaice:
2749       modify lsr-algorithm so that it vectorizes AND converges by using a
2750       "zebra" method: split vector loop into two with step size 2; this
2751       solves a general convergence problem for the JFNK solver on a vector
2752       computer. It has the potential to even improve convergence for
2753       non-vector machines, but it does change the results so it is turned
2754       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
2755       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
2756    
2757    checkpoint64e (2013/03/05)
2758    o pkg/ecco and several verification experiments:
2759       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
2760       from ecco package, and revert to unified routine in model/src/
2761       Adjust verification experiments accordingly, especially gloal_oce_llc90
2762       Should conclude long-standing work by Gael to reconsile the_main_loop with
2763       ECCO and will enable OpenAD's revolve loop in ECCO setup.
2764    o pkg/generic_advdiff:
2765      - implement compressible flow method for multi-dim advection (similar to
2766        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
2767        TAF generates many recomputations) to use it; no yet coded with implicit
2768        vertical advection.
2769      - change experiment advect_cs (new output) and advect_xy (same output)
2770        to test compressible flow multi-dim advection.
2771    o pkg/generic_advdiff:
2772      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
2773        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
2774    o pkg/seaice:
2775      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
2776        bug affects two verification experiments (lab_sea and lab_sea.hb87),
2777        recover old (wrong) results by setting noSlipFac = 2. in
2778        seaice_calc_strainrates.F;
2779      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
2780      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
2781        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
2782      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
2783    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
2784      - new subroutines seaice_lsr_tridiagu/v
2785      - introduce loop bounds i/jmin/max to be able to use a restricted
2786        additive Schwarz method, but not used for now.
2787      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
2788      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
2789    o OpenAD support
2790       Reorganize S/R call for overall time-stepping loop to facilitate
2791       OpenAD revolve loop replacement
2792       (new S/R main_do_loop.F)
2793    o model/src:
2794      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
2795      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
2796        ADAMS_BASHFORTH2.
2797    o pkg/cheapaml:
2798      - add new parameter (default=F, same as before) to disable full domain
2799        (including land) periodicity in X & Y dir.
2800      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
2801        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
2802        into single S/R CHEAPAML_TIMESTEP.
2803    
2804    checkpoint64d (2013/02/17)
2805    o pkg/monitor (angular momentum):
2806      - do not add Eta contribution to the total AM if using rigid-lid;
2807      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
2808      - horizontal discretisation: compute Zonal wind contribution separately for
2809        each component (instead of from cell centered averaged) and use the 4
2810        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
2811      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
2812        FreeSurf) if using vectorInvariant momentum.
2813    o model/src (horizontal grid):
2814      - move initialisation of all horizontal grid arrays to null value
2815        from specific horizontal grid S/R to main S/R INI_GRID;
2816      - add 2 new arrays to project model C-grid velocity on to zonal direction
2817        (similar to AngleCosC & -AngleSinC but at U and V point location) and
2818        compute them in S/R CALC_GRID_ANGLES.
2819    o pkg/seaice: replace a hard coded parameter by a runtime parameter
2820        SEAICE_JFNK_tolIter
2821    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
2822        preconditioner for JFNK (run LSR into the overlaps as far as possible,
2823        i.e OLx/y-2, but overwrite the solution in the overlaps)
2824      - extend loop range in seaice_calc_viscosity
2825      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
2826      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
2827      - slightly modify loops in tridiagonal solver lsr-preconditioner
2828      - by default remove the extra exchange in seaice_preconditioner with a
2829        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
2830      - modify offline_exf_seaice so that old results without RAS are reproduced
2831        for output.dyn_jfnk.txt
2832      in seaice_fgmres.F (unrelated to RAS)
2833      - add a cpp-flag option for a re-ordered mapping (potentially more
2834        efficient), but because this changes the results, turn it off by
2835        default
2836      - replace the save statement by local common blocks
2837    o utils/matlab:
2838      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
2839      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
2840        instead of local script "load_cs.m".
2841    o pkg/seaice:
2842      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
2843        to the scalarProductMetric and the unrolling. By chance this does not
2844        change the verification experiment, because of the particular domain
2845        decomposition
2846    o pkg/diagnostics:
2847      - change default missing_value from UNSET_RL to -999.
2848    o pkg/layers: improve vectorization of layers_fluxcalc.F
2849      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
2850        time spent in this routine by more than a factor of 3 on an NEC-SX8
2851      - step 2: replace search algorithm by a bisection algorithm found in
2852        Press et al. Numerical Recipes in Fortran. This algorithm can be
2853        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
2854        For now, use this algorithm only for TARGET_NEC_SX defined.
2855      - moved the search algorithm into a separate subroutine, that is kept
2856        within the same file for automatic inlining.
2857      - modified catching potential errors
2858    o pkg/ecco:
2859      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
2860    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
2861      - modifications for ALLOW_GENTIM2D_CONTROL
2862      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
2863      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
2864      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
2865      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
2866    o model/src:
2867      - account for moist thermodynamics in (dry) potential temperature equation;
2868        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
2869        and cpl_aim+ocn.
2870      - also switch to standard compiler (gfortran, was using ifort previously)
2871        for fizhi-cs experiments reference output.
2872    o pkg/ctrl:
2873      - 1st step toward generic time-varying control variable (2D) via CPP option
2874        ALLOW_GENTIM2D_CONTROL
2875      - note new namelist ctrl_nml_genarr in data.ctrl
2876    o verification/global_ocean.cs32x15:
2877      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
2878        thsice calling sequence and update "output.icedyn.txt" output file.
2879    o pkg/ptracers:
2880      - from Ryan A.: code to allow to restart a tracer at regular time interval
2881        specifying a reset frequency and a reset-phase (for each tracers).
2882    o pkg/thsice:
2883      - implement new sequence of calls for thsice+seaice:
2884          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
2885          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
2886      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
2887        in CPP_OPTIONS.h) to recover old sequence;
2888      - update diagnostics for Intermediate State thsice diagnostics: now filled
2889        just before advection (instead of just after advection in old sequence);
2890      - update output of experiment offline_exf_seaice (standard test);
2891      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
2892        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
2893    o pkg/aim_v23:
2894      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
2895      - use standard pkg/mdsio routines to read & write CO2 pickup file;
2896      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
2897      - Implement new sequence of calls for seaice advection (with thsice and
2898        seaice diffusion): do ice advection after ice-Thermodynamic (previously
2899        was done before); change aim_do_physics.F (split the bi,bj loops block);
2900      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
2901    o pkg/thsice:
2902      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
2903        where just seaice diffusion is used without seaice-dynamics.
2904    
2905    checkpoint64c (2013/01/18)
2906    o pkg/seaice:
2907      - add a parameter JFNKres_tFac that can replace JFNKres_t
2908        (= JFNKres_tFac*JFNKresidual before JFNK solver)
2909      - add a line search option to the JFNK solver
2910      - move update of u/vIce and computation of initial residual into a separate
2911        routine (same file); makes the code a little easier to read (?)
2912      - the line search requires computation of the residual and for some reason
2913        I cannot do the update of u/vIce at the beginning of the Newton loop
2914        without changing the results, so we move computation of the new residual
2915        also to the end of the Newton loop, even without the line search
2916    o pkg/mdsio:
2917      - write missing value (corresponding to undefined array value) to meta files;
2918        skip this if missing value is one (UNSET_RL would be a better value for the
2919        case of undefined missing value but it's current the default missing-value);
2920        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
2921    o pkg/exf & thsice:
2922      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
2923        diagnostics) even when SHORTWAVE_HEATING is #undef;
2924    o verification/cfc_example:
2925      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
2926        illustrate how to use it).
2927    o verification/offline_exf_seaice:
2928      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
2929        files to only one time-record.
2930      in input.thermo: narrow the 2 bands of low initial ice-concentration near
2931        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
2932        snapshot output; same mcPheePiston value as in thsice with
2933        surf-current=0.2m/s.
2934      in input.thsice: similar set-up as in input.thermo (channel with same seaice
2935        initial conditions).
2936    o verification/cfc_example:
2937      - update file "data" with more standard choice (default rotationPeriod,
2938        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
2939        set deltaTFreeSurf to deltaTtracer) and update the output.
2940    o pkg/layers:
2941      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
2942      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
2943    o verification/offline_exf_seaice:
2944      - set all {field}period to zero for constant-in-time forcing (not tested
2945        anywhere else).
2946    o verification/offline_exf_seaice:
2947      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
2948      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
2949    o model/src:
2950      - implement Finite-Volume method for (hydrostatic) presure gradient
2951        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
2952    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
2953      - In order to be compatible with the default EVP code, this requires changing
2954        the EVP code around a little; and because any small change immediately
2955        breaks the lab_sea.hb87 verification experiment, the reference output is
2956        updated two times (each time the remaining aggrement was only 2 digits):
2957        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
2958        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
2959        The adjoint test lab_sea.evp also needed to be updated.
2960      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
2961        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
2962        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
2963        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
2964        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
2965        kept obscure, because I need to test it a little more.
2966    o pkg/cheapaml:
2967      - fix few incorrect type (_RL/_RS) in subroutine calls.
2968    o pkg/seaice:
2969      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
2970        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
2971    o model/src:
2972      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
2973        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
2974        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
2975    o pkg/cheapaml:
2976      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
2977        update output of experiment cheapAML_box.
2978      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
2979        and set them only in one place (cheapaml_readparms.F).
2980      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
2981      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
2982        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
2983    o model/src/the_main_loop.F:
2984      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
2985    o pkg/seaice:
2986      - remove legacy branch code.
2987      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
2988    o verification/*/code*/SEAICE_OPTIONS.h:
2989      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
2990        SEAICE_CAP_HEFF).
2991    o pkg/cheapaml:
2992      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
2993        to load new forcing fields.
2994      - add missing "_d 0" where it's needed; + some editing (improve indentation).
2995      - remove switch to "-r8" compiler option (no longer needed) in verification
2996        cheapAML_box, keep same output (small trucation error differences).
2997    o verification/offline_exf_seaice:
2998      - add thermodynamics only test.
2999    o verification/cheapAML_box:
3000      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
3001        keep same output (same 14 digits for cg2d).
3002      - switch on "-r8" compiler option (some numerical values are missing
3003        the "_d 0") and update output (only 6 digits for cg2d were preserved).
3004    
3005    checkpoint64b (2012/12/24)
3006    o pkg/cheapaml:
3007      - remove un-used variables (Qnet,EmPmR) from pickup files.
3008      - store tendency of advected variables into cheapaml pickup file
3009        and fix the AB-2 restart.
3010    o verification/offline_exf_seaice and lab_sea adjoint:
3011      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
3012      - switch to 4 time steps in offline, consistent with lab_sea.
3013      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
3014      - update results after change of experiment seaice.
3015    o pkg/seaice:
3016      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
3017        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
3018        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
3019        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
3020    o model/src:
3021      - add run-time parameter to select CG2D solver minimum-residual solution
3022        (in case of a poor convergence).
3023    o pkg/seaice/seaice_lsr.F
3024      - move calculation of matrix coefficients into new
3025        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
3026        file; the main purpose of this change is to be able to reuse the code
3027        in S/R SEAICE_PRECONDITIONER
3028      - modify the computation of the residual so that the mass of sea-ice
3029        is not used twice; this simplifies the calculations, but since
3030        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
3031        not tested in testreport---this does not affect the testreport results.
3032    o verification/seaice_obcs:
3033      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
3034        verification/lab_sea/input.salt_plume; changes results/output.txt*
3035    o model/src:
3036      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
3037    o pkg/seaice:
3038      - improve description of parameters in seaice_fgmres.F and start
3039        cleaning up the code
3040      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
3041        second argument
3042      - add a metric based on grid cell area to SEAICE_SCALPROD; update
3043        results of offline_exf_seaice.dyn_jfnk
3044      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
3045    o pkg/aim_v23:
3046      - fix an other bug in dissipation heating (grid-cell area was missing).
3047    o model/src + pkg/seaice:
3048      - add global (multi-tile) linear solver for pair of tri-diagonal system
3049        along X and Y lines, respectively for U and V component.
3050        Note: 1) MPI and cube-exchange not yet coded.
3051            2) probably not accurate for poorly conditioned / large size problem.
3052      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
3053        default: not compiled and not used.
3054    o pkg/seaice:
3055      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
3056        introduce bi/bj loops and use global_sum_tile_rl instead of
3057        mpi_allreduce in seaice_fgmres.F
3058      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
3059      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
3060      - add a verification experiment for JFNK in offline_exf_seaice
3061    o verification:
3062      - change (for now, only fwd test) offline_exf_seaice experiment:
3063        use a re-entrant channel with idealized coastline (trapezoidal shape)
3064        at southern boundary to explore seaice dynamics and thermodynamics
3065        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
3066        secondary test (input.thsice) use thermodynamics only with SST relaxation.
3067      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
3068    o pkg/exf:
3069      - disable "sstExtrapol" when Nr=1
3070    o verification:
3071      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
3072        to test pkg/cheapaml.
3073    o pkg/aim_v23 & pkg/shap_filt:
3074      - fix dissipation heating (erroneous gravity multiplication factor).
3075    o pkg/seaice:
3076      - remove unused field pressPre from jfnk solver
3077      - rename two subroutines in seaice_preconditioner.F
3078    o eesupp/src:
3079       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
3080    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
3081       - remove wrong parts of the rhs and the lhs (were in there
3082         because I did not understand the concept of this preconditioner)
3083       - add an exchange between u- and v-sweep. This increases communication
3084         by a factor of two but improves the convergence of jfnk. Ideally,
3085         one would like the u- and v-sweep to be independent. So far within
3086         undocumented ifdefs
3087       - reorganize the extra computations for printing the residuals
3088    o tools/genmake2:
3089      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
3090        since it's not necessary (and was preventing to use MNC in some cases).
3091    
3092    checkpoint64a (2012/11/16)
3093    o pkg/autodiff:
3094      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
3095        autodiff_readparms.F no longer depends on calling order (within
3096        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
3097        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
3098        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
3099    o pkg/obcs:
3100      - adding tidal velocity forcing capability to obcs
3101        for usage example, see verification/seaice_obcs/input.tides
3102    o pkg/seaice:
3103      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
3104        SEAICE_LSRrelaxU/V
3105      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
3106    o pkg/aim_v23:
3107      - implement heating from friction (bottom friction and stratospheric drag).
3108    o pkg/shap_filt:
3109      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
3110        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
3111    o model/src:
3112      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
3113        time-constant addMass field from file (addMassFile);
3114      - support for heating due to friction (and Kinetic Energy dissipation):
3115        add option, run-time switch and 3-D field array + support code ; each pkg
3116        or S/R can add heating contribution (if there is a sink of KE); the sum is
3117        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
3118    o pkg/seaice:
3119      - complete merge of ITD code into seaice_growth.F
3120        from MITgcm_contrib/torge/itd/code/
3121        no verification so far, but Torge Martin tested
3122        "1-D test case and Beaufort set up;
3123        deliver okay results after 1 model year."
3124      - complete merge of SEAICE_SIZE.h into all relevant routines
3125      - move computation of eta at Z-points into calc_viscosities
3126        + introduce global field etaZ
3127        + add different methods for computing etaZ, for now the old
3128          method (simple averages of eta to Z-points) is hardwired
3129        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
3130          seaice_preconditioner
3131      - simplify computations for SEAICE_ZETA_SMOOTHREG
3132      - seaice_preconditioner:
3133        + replace one remaining press by pressLoc (mistake)
3134        + adjust printing of residuals
3135      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
3136        + add (SEAICE.h) and rename some counters (initiliased in
3137          seaice_init_fixed.F)
3138        + add _BEGIN/END_MASTER (myThid)  around print statements
3139        + print total number of iterations and failures over SEAICE_monFreq
3140          interval to STDOUT
3141      - move control over output-messages by fgmres to seaice_jfnk to save
3142        some operations
3143      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
3144        in order to make restarts with sol .ne. zero (fgmres with restarts)
3145        (seaice_jfnk.F, seaice_fgmres.F)
3146      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
3147        a serious convergence problem when open boundaries are involved
3148    o pkg/ggl90: fix computation of control volumes for the case of
3149      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
3150      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
3151    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
3152    o pkg/autodiff
3153      - Add inAdMode switch for SEAICEuseDYNAMICS:
3154        SEAICEuseDYNAMICSinAdMode
3155        (extend logic in ADAUTODIFF_INADMODE_SET)
3156    o pkg/seaice
3157      - Step 1 of merging ice-thickness distribution (ITD) code from
3158        MITgcm_contrib/torge/itd/ (author: Torge Martin)
3159        The code implements concept laid out in Thorndike et al. (1975);
3160        code is enabled via CPP flag SEAICE_ITD
3161        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
3162        code is not complete yet!!
3163      - SEAICE_SIZE.h now included in almost all seaice routines
3164    o verification (using seaice):
3165      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
3166        global_ocean.cs32x15.seaice ; update results.
3167      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
3168      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
3169        offline_exf_seaice (previously compiling B-grid).
3170    o pkg/exf:
3171      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
3172        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
3173        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
3174    o pkg/layers (adjust changes from Sept 19):
3175      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
3176        this allows to remove "layers_maxNum" dimension from all layers arrays.
3177    o pkg/layers (adjust changes from Sept 19):
3178      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
3179      - snap-shot extended to all type of layers (not just the 1rst type);
3180      - remove layers variables when corresponding CPP option is undef.
3181    o pkg/layers:
3182      - rename pkg/layers variable and add new output (layer exist & un-weighted
3183        velocity in layer)
3184    o pkg/seaice:
3185      - simplify (?) ocean-drag coefficent computations by using
3186        the same routine in all three solvers (saves some code lines)
3187      - remove global fields DRAGA and DRAGS from C-grid code and
3188        declare them locally in lsr.F (the only place where they are
3189        still used)
3190      - update AD output of lab_sea.evp (very sensitive anyway).
3191    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
3192      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
3193      and SEAICEuseJFNK=.true. A few things to note:
3194      - involves a FGMRES, that is parallel but very inefficient,
3195        because of many scalar products (global sums) in the Gram-Schmidt
3196        orthogonalization method. Needs to be replaced. Original code
3197        from J.-F. Lemieux
3198      - preconditioner for FGMRES is a stripped down version of LSOR
3199      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
3200        preconditioner. For the preconditioner, the default is set to 10.
3201      - Jacobian times vector is computed with finite differences
3202      - marginally related to JFNK-solver: add a smooth regularization for
3203        zeta with tanh that will improve convergence (Lemieux and Tremblay,
3204        2009) for any implicit solver (not implemented for EVP because EVP
3205        does not need this regularization in the first place). Define
3206        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
3207    o eesupp/src:
3208      - check in genmake2 that intrinsic S/R flush is available.
3209      - add S/R to flush IO unit (if intrinsic S/R flush is available)
3210      - flush standard & error msg unit before MPI termination
3211      - if debugMode, flush IO unit after printing msg
3212    o pkg/ctrl:
3213      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
3214        to ctrl_set_unpack_xyz.
3215    
3216    checkpoint64 (2012/10/09)
3217    o pkg/shelfice
3218      - in mom_fluxform.F, mom_vecinv.F:
3219        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
3220        Bug fix KappaRU -> KappaRV
3221        does not change verification/isomip but may change other setups
3222        (presumably constant KappaRU=KappaRV)
3223      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
3224    o pkg/obcs:
3225      - fixed some indexing bugs in obcs_seaice_sponge.F
3226      - added obcs relaxation subroutines for HSALT and HSNOW
3227      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
3228  o pkg/seaice:  o pkg/seaice:
3229    - add "multicategory" parameterization for snow in analogy to ice,    - add "multicategory" parameterization for snow in analogy to ice,
3230      default is off for now.      default is off for now.

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