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revision 1.1290 by gforget, Fri Aug 6 18:45:41 2010 UTC revision 1.2022 by jmc, Fri Jul 11 19:17:29 2014 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/src:
8      - new file "apply_forcing.F" containing all the code previously in
9        external_forcing.F, but with new argument list: pass, as new argument,
10        the current level tendency array to update (instead of a direct update
11        of the common bloc array). Change the corresponding calls.
12      - add CPP option USE_OLD_EXTERNAL_FORCING (default is undef) to use
13        EXTERNAL_FORCING_U,V,T,S subroutines (for backward compatibility).
14    o pkg/seaice/seaice_lsr, a little bit of clean up
15      - rearrange some code blocks, so that now all calculations for
16        setting up the right-hand-sides done within one single block
17        (I find that easier to read and understand)
18      - rearrange freedrift-code to reduce the number of ifdefs
19      - adjust some indentations and comments
20    
21    checkpoint64z (2014/07/10)
22    o model/src and several pkgs:
23      - change argument list of all S/R called from external_forcing.F and
24        called from ptracers_forcing.F (renamed to ptracers_apply_forcing.F)
25        to pass, as argument, the current level tendency array to update
26        (instead of a direct update of the common bloc array).
27      - change also (in the same way) argument list of PTRACERS_APPLY_FORCING;
28      - rename taueddy_external_forcing.f to taueddy_tendency_apply.F
29    o pkg/seaice/seaice_lsr.F
30      - always initialize local arrays in seaice_lsr_tridiagu/v
31      - add more local tapes to seaice_lsr_tridiagu/v
32      - move storing u/vice(:,:,bi,bj) out of seaice_lsr_tridiagu/v, but
33        keep it in bi/bj loop; this seems to be essential
34      - gradients are still wrong but only by 4-7 orders of magnitude
35        instead of 15 orders of magnitude, lab_sea improves a little
36    o pkg/seaice
37      - (pkg/autodiff) remove storing/restoring of seaiceMaskU/V that
38        generates unnecessary code in seaice_lsr_ad
39      - add more store directives in seaice_lsr to avoid unnecessary code
40        in seaice_lsr_ad
41      - exclude some residual computations in seaice_lsr when
42        ALLOW_AUTODIFF_TAMC is defined in order to avoid unnecessary code
43        in seaice_lsr_ad
44      - add more storing, a new tape (model/src/the_main_loop.F) and
45        another key for SEAICE_LSR_VECTORIZE_ZEBRA (the local keys ilockey
46        and klockey should be checked by a specialist)
47      - modify ( define SEAICE_VECTORIZE_LSR and SEAICE_LSR_ADJOINT_ITER )
48        and update lab_sea after previous changes in pkg/seaice below
49    o pkg/autodiff:
50      - introduce useSmoothCorrel2DinAdMode, SEAICEapproxLevInAd, and
51        viscFacInAd : run time parameters allowing for adjoint switches
52        note : logic for useSmoothCorrel2DinAdMode is in ctrl_readparms.F
53    o pkg/ecco:
54      - introduce cost_gencost_boxmean.F that computes a box mean
55        temperature (for use in adjoint sensitivity studies).
56    o model/src/set_defaults.F : initialize viscFacAdj to 1.
57    o pkg/mom_common/mom_calc_visc.F:
58      - ifdef ALLOW_AUTODIFF then include viscFacAdj factor.
59    o pkg/seaice/seaice_summary.F:
60      - statement for SEAICEadjMODE now in autodiff_readparms.F
61    o pkg/seaice:
62      - remove some store directives and add new ones in an effort to get
63        finally rid off the recomputation warnings. This is successful
64        when SEAICE_VECTORIZE_LSR ***and*** SEAICE_LSR_ADJOINT_ITER are
65        defined (i.e. no extensive recomputation warnings left), but there
66        are still too many recomputations on the solver iteration level
67      - define SEAICE_VECTORISZE_LSR in offline_exf_seaice/code_ad/SEAICE_OPTIONS.h
68      - move definition of MPSEUDOTIMESTEPS into TAMC-block in
69        SEAICE_SIZE.h
70      - add a store directive in S/R seaice_calc_viscosities
71    o pkg/seaice (ITD code):
72      - fix definition of Hlimit for multi-threaded case
73      - use double precision arithmetic to compute Hlimit: this affects results;
74        update output of experiment seaice_itd.
75    o replace content of verification/seaice_itd
76      - instead of a 1D column use the configuration of offline_exf_seaice
77        to test the ice thickness distribution code with ridging
78      - this is a first shot at this experiment
79      - change of some defaults of ridging parameters SEAICEhStar (from
80        100 to 25) and SEAICEmuRidging (from 5 to 3) in seaice_readparms.F
81        and lot of new comments.
82    
83    checkpoint64y (2014/06/20)
84    o pkg/seaice/seaice_reg_ridge.F:
85      - modify the regularization of very small volumes of ice; only check
86        total volume HEFF, and do not apply correction to individual ice
87        classes because that leads to funny patterns in the heat and fw-fluxes
88        into the ocean. Adjust seaice_itd/results/output.txt
89      - replace nITD by SEAICE_multDim in loop-ranges
90    o pkg/exf:
91      - add code to process the case field period = -12. with UV interpolation.
92      - move debug print (formerly active when exf_verbose=T) from EXF_getFFieldRec
93        into S/R that calls it (i.e., exf_set_gen.F, exf_set_uv.F & obcs_exf_load.F)
94    o verification/global_with_exf:
95      - switch all fields period to -12. (was previously untested) in input/data.exf
96        (but keep secondary test ".yearly" unchanged); update the reference output.
97    o pkg/cal:
98      - new calendar type "noLeapYear" for 365 days calendar without any leap year.
99    o pkg/exf:
100      - new integer parameter "exf_debugLev" (default set to main model debugLevel)
101        to replace logical switch "exf_verbose"
102      - report in STDOUT when loading a new record (if exf_debugLev >= 3)
103    o pkg/sbo:
104      - update from Katherine Quinn: evaluate mass directly from density and SSH
105        (budget using Finite Volume method) instead of from bottom pressure.
106      - allow testreport to collect few selected SBO output ; tested in exp.
107        global_ocean.90x40x15 (after updating the results, to include SBO output).
108      - fix some multi-threading issues (in output part).
109    o model/src & most packages:
110      - always call {PKG}_READPARMS even if corresponding use{PKG}=F;
111      - in {PKG}_READPARMS, in case use{PKG}=F: add a call to new S/R
112        PACKAGES_UNUSED_MSG to print a weak warning when parameter file
113        "data.{pkg}" exist ; and leave the S/R (return) just after.
114      - more standard LAND pkg interface (land_init_fixed.F, land_check.F).
115        + call LAND_READPARMS from packages_readparms.F
116    o pkg/seaice:
117      - remove code that resets useThSice in S/R seaice_readparms and
118        replace it by a warning in S/R seaice_check
119      - remove parameter MULTDIM, replace with nITD and runtime
120        parameter SEAICE_multDim (still hard-wired to nITD if
121        SEAICE_ITD is defined)
122    
123    checkpoint64x (2014/05/24)
124    o verification/lab_sea:
125      - update adjoint and TLM output following changes to pkg/salt_plume
126      - un-do the update after putting back local recip_Cp in few places.
127    o pkg/salt_plume: modifications by An Nguyen:
128      - add capability to do brine rejection (salt-plume) as function of
129        volume+tracers (instead of only salinity tracer).
130      - conserve volume by exchanging volume from each kLev to above to
131        accommodate in-coming brine volume
132      - store surface and klev exchanged fraction + volume in 4 new 3-d arrays
133      - switch KPP surf buoyancy due to brine forcing to 3-d
134        (3 more 3-d arrays, 2 for SPforcing[T,S], 1 for boplume)
135      - add salt_plume_volfrac, salt_plume_apply, salt_plume_tendency_apply_t
136      - unrelatedly, also add ad-hoc capability to vary salt_plume scheme
137        in East/West Arctic.
138    o pkg/sbo:
139      - incorporate modifications from Katherine Quinn to enable the use of sbo
140        pkg in ECCO-v4 set-up ; remove SBO-TimeAve output ; add monitor-like
141        output for future testreport verification (unfinished).
142    o pkg/atm_phys:
143      - change diagnostics (AtPh_Trf & AtPh_Qrf) of DARGAN_BETTSMILLER S/R:
144        skip the reseting of t_ref & q_ref to initial t & q ; this preserve the
145        output of S/R CAPECALCNEW (Parcel temp & q) for diagnostics.
146    o pkg/seaice
147      seaice_calc_ice_strength.F: modify expression to avoid divisions
148        (affects truncation)
149      seaice_do_ridging.F: clean up the insectarium
150      - fix a bug that was compensated by areaScaling (-> remove areaScaling code)
151      - added SEAICEsnowFracRidge to redistributed snow (2nd bug)
152      - set closing/openingRate to zero where no extra iteration is need (3rd bug)
153      - add some debugging information and error messages (warnings)
154    o model/src: modifications relatd to atmosphere p*:
155      - Switch to more accurate p* coordinate slope term (calc_grad_phi_hyd.F)
156      - With p* or Sigma-P, use constant reference Pot.Temp (thetaConst) instead
157        of vertical profile tRef in geopotential background and anomaly.
158      - Acount for true p* correction in theta <-> T conversion in pkg/aim_v23
159        and pkg/atm_phys.
160      - Update FWD output of experiments: aim.5l_cs (x2), fizhi-cs-32x32x40,
161        fizhi-cs-aqualev20, fizhi-gridalt-hs, tutorial_held_suarez_cs, cpl_aim+ocn.
162    o pkg/seaice: fix a bug in seaice_prepare_ridging.F, forgot a sqrt
163    o pkg/ptracers: compute ptracer source/sink due to linear free surface.
164        not used right now, but can be used in BGC packages to fix conservation.
165    o pkg/dic, pkg/gchem: move tracer_meanarea to gchem, so it can be used by
166        other packages too.
167    o pkg/seaice/seaice_calc_ice_strength.F: replace SEAICE_rhoSnow by
168        SEAICE_rhoIce in the Rothrock (1975)-type strength calculations (bug fix)
169    o model/src:
170      - since we have several heat capacity (even in model/src), define "recip_Cp"
171        as local variable (no longer in common block) to avoid any confusion.
172      - add thetaConst in PARAMS.h (to be used with pStar or sigma-P coords).
173    o pkg/exf:
174      - from Jeff Scott: add option (#define EXF_CALC_ATMRHO) to calculate local
175        air density as function of air Temp, Humidity and atm pressure.
176    
177    checkpoint64w (2014/05/02)
178    o verification:
179      - update output_adm.txt files for experiment global_ocean.cs32x15 (seaice &
180        seaice_dynmix) and lab_sea (primary test & noseaicedyn): moving/changing
181        code from seaice_growth.F & seaice_advdiff.F to new ridging routines
182        seaice_reg_ridge.F seaice_do_ridging.F affects AD gradient
183        (down to 8-7 matching digits for global_ocean and 5-6 for lab_sea).
184    o model/src: for atmosphere in p* coords:
185      - store factor rStarFacC**atm_kappa (= pStarFacK) in common block
186      - implement more accurate p* coordinate slope term (in calc_grad_phi_hyd.F),
187        but not yet activated.
188    o pkg/seaice: fix restart problem for ITD with new ice strength parameterisation:
189      - move computation of opnWtrFrac = 1-AREA to before computing ice strength
190      - this changes the results (but not for any verification experiment, because
191        none tests this), but avoids having an extra field in the restart files
192    o pkg/seaice: remove global variable TICE (not needed)
193      - replace by TICES or local variable where necessary (cost_seaice_test,
194        seaice_diagnostics_state)
195      - move copying TICE to TICES from seaice_check_pickup to seaice_read_pickup
196      - use specific read/write routines for reading and writing individual leves
197        of a multilevel field
198    o pkg/ctrl & model/inc:
199      - move additional anomaly fields of control vars (related to options:
200         ALLOW_KAPGM_CONTROL, ALLOW_KAPREDI_CONTROL and ALLOW_BOTTOMDRAG_CONTROL)
201        from DYNVARS.h into new header file: CTRL_FIELDS.h
202    o pkg/seaice: some small modifications to the ridging code
203      - make fw2ObyRidge a global variable and add the freshwater flux to
204        seaice_growth
205      - pass actual thickness from seaice_prepare_ridging, so that it is
206        computed only in one place and compute it in the same way as in
207        seaice_growth
208      - initialise more fields in seaice_do_ridging that where cause floating
209        point exceptions over land
210    o pkg/seaice: preparations for ridging code and first real ridging code
211      - move most of "PART 1" of S/R seaice_growth into a new and separate
212        S/R seaice_reg_ridge that will both regularize the state variable after
213        advection call the actual ridging routine;
214      - requires to make 5 fields global fields: d_HEFFbyNEG,d_HSNWbyNEG,
215        d_AREAbyRLX,d_HEFFbyRLX,saltFluxAdjust;
216      - remove ridging code from seaice_advdiff
217      - clean up remaining part 1 of seaice_growth in an attempt to make it
218        more readable (this is probably subjective)
219      - call seaice_itd_redist once in the initialisation phase to have the initial
220        conditions in the correct category
221      - finally: add new ridging routine for ITD code
222    
223    checkpoint64v (2014/04/11)
224    o pkg/ecco:
225      - add runtime parameters mdt[start,end]date[1,2]
226      - rename variable "tpmean" as "mdt" and "topexmeanfile" as "mdtdatfile"
227    o pkg/seaice:
228      - make deltaC a global variable, so that it can be used in ridging code
229      - first step towards ridging: introduce new routines that compute
230        ice strength based on ridging parameters
231      - add diagnostic for HSNOWITD
232      - add opnWtrFrac as a global variable (required for ridging scheme)
233    o pkg/salt_plume + pkg/seaice/seaice_growth.F
234      - add SALT_PLUME_IN_LEADS flag to activate pkg/salt_plume only when ice
235        AREA exceeds a threshold (code contributed by I.Fenty in 2011)
236    o verification/hs94.1x64x5:
237      - leave ALLOW_AUTODIFF_TAMC undefined in code_oad/AUTODIFF_OPTIONS.h
238      - do not use ECCO_CPPOPTIONS.h anymore for TAF & OpenAD Adjoint tests.
239    o autodiff:
240      - Start to include explicitly AUTODIFF_OPTIONS.h, COST_OPTIONS.h,
241        and CTRL_OPTIONS.h in src files (to enable to skip the ECCO_CPPOPTIONS.h)
242        For now, only in pkgs used in verification/hs94.1x64x5.
243      - Replace ALLOW_AUTODIFF_TAMC by ALLOW_AUTODIFF (except for tape/storage
244        which are specific to TAF/TAMC).
245      - Replace ALLOW_AUTODIFF_OPENAD by ALLOW_OPENAD:
246        since ALLOW_OPENAD is defined in PACKAGES_CONFIG.h (any time pkg/openad
247        is compiled), this simplifies/reduces which *_OPTIONS.h file to include.
248      - OpenAD: change Makefile to generate the appropriate AD_CONFIG.h when
249        building mitgcmuv_ad (make adAll).
250    o pkg/ecco:
251      - cost_gencost_seaicev4.F:
252         reformulate proxy cost as function of sst and local param SEAICE_freeze
253         change cost names from siv4-[sst,vol] to siv4-[deconc,exconc]
254      - add stop statement if old names siv4-[sst,vol] are used
255      - add snapshots + cost reports for atmospheric longwave
256      - remove factor 0.1 in front of wtau[u,v]
257      - replace never used flag ALLOW_TMI_COST_CONTRIBUTION with
258         ALLOW_TMI_SST_COST_CONTRIBUTION
259    o pkg/atm_phys:
260      - add some diagnostics for Short-wave and for convection S/R.
261    o pkg/seaice/seaice_growth:
262      - fix a bug in the lateral melt parameterization for SEAICE_ITD
263        in seaice_growth; tempFrz needs to be computed inside the i/j-loop
264      - rearrange loop order for better vector code in the same code block
265      - rewrite the floeDiameter formula to have fewer divisions
266      -  (miraculously) none of this changes the results of seaice_itd
267    o pkg/smooth:
268      - move param smooth2Ddiffnbt to pkg/ecco
269    o pkg/salt_plume:
270      - salt_plume_frac.F:
271         clean up local param names
272         reformulate (1-frac) to frac; original 1-frac was based on swfrac code
273    o pkg/rw:
274      - add RS version of S/R READ_MFLDS_LEV.
275    o pkg/streamice:
276      - fix the restart test by writing/reading pickup_streamice files.
277    o pkg/seaice:
278      - refine checks for jfnk-related parameters
279      - comment out if statement with SEAICEuseIMEX parameter as long as there
280        is no IMEX code to avoid confusion and surprises
281    
282    checkpoint64u (2014/03/07)
283    o verification/MLAdjust:
284      - rename secondary test suffix:
285         1.leith  -> A4FlxF  + switch to flux-form & add side-drag
286         0.leithD -> AhFlxF  + switch to flux-form
287         0.smag   -> AhVrDv  (use Vorticity-Div. visc form) + add side-drag
288         0.leith  -> AhStTn  (use Strain-Tension visc form) + add side-drag
289    o pkg/mom_vecinv:
290      - remove unused arguments from S/R MOM_VI_HDISSIP & MOM_HDISSIP (as it used
291        to be before mom_calc_visc.F)
292      - skip the call to MOM_CALC_TENSION & MOM_CALC_STRAIN if not needed.
293      - add 2nd copy of vort3 & strain that knows about lateral BC (free/no slip):
294        this is simpler for the adjoint and for diagnostics.
295    o model/src + pkg/momentum:
296      - add input files for  2-D additional Western and Southern cell-edge wall
297         (e.g., to add "thin-wall" where it is =1).
298      - fix sideDrag option for thin-walls with Non-Lin Free-Surf
299        using 2nd hFacZ that is computed from initial (fix domain) hFac
300      - known limitations of thin wall implementation: not yet coded for sigma
301        coords; not working with CD-scheme neither.
302    o pkg/seaice:
303      - rename recently introduced parameters from (wrong name) AB to
304        BDF (backward difference time discretisation)
305      - retire runtime parameters SEAICEuseAB2, SEAICE_abEps
306    o tools/adjoint_options:
307      - remove setting of "OPENAD=true" (now set by command line "genmake2 -oad")
308    
309    checkpoint64t (2014/02/01)
310    o pkg/ecco
311      - add compile flag ALLOW_GENCOST_TIMEVARY_WEIGHT in ECCO_OPTIONS.h and
312        runtime logical flag gencost_timevaryweight to read daily sea-ice sigma
313      - replace hard-coded record number and period which only work for monthly
314        with read-in runtime param that works for other periods (month,day,year)
315    o pkg/thsice
316      - corrected store directive fixes thsice adjoint gradient checks
317    o genmake2 & testreport:
318      - add genmake2 option "-oad" to generate a Makefile for OpenAD built and
319        in this case, use tools/adjoint_options/adjoint_oad as default AD optfile.
320        Update testreport accordingly. No need to set "export OPENAD=true"
321        in adjoint_options/adjoint_oad anymore (will be removed later).
322    o pkg/shelfice:
323      - put T & S shelfice forcing into model surfaceForcing_T,_S (for now,
324        only if SHELFICEboundaryLayer=F); Change model/src/external_forcing.F
325        so that surface forcing applies to k=kSurf if using pkg/shelfice.
326    o pkg/ctrl, pkg/grdchk, pkg/ecco:
327      - Changes to make GENARR more modular (i.e. invisible if not used)
328    o model/src/temp_integrate.F and salt_integrate.F
329      - re-include store directives that were removed on Dec 27th.
330    o model/src/external_forcing_surf.F
331      - add storage directives for EmPmR and PmEpR to avoid recomputation of
332        seaice_model in the adjoint that is problematic when seaice_model is
333        turned off in the adjoint. The resolved issue dated back to July when
334        EXTERNAL_FORCING_SURF call was moved.
335        Update global_ocean.cs32x15/*/output_adm.seaice_dynmix.txt accordingly.
336    o pkg/exf/exf_check.F
337      - fix a small bug again (originally found by Wentao Liu, now found again)
338      - streamline error output
339    o pkg/streamice and aim_v23:
340      - replace a few "_EXCH_XY_RL (" with "_EXCH_XY_RL(", so that
341        Apple's /usr/bin/cpp knows what to do:
342        Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
343        Target: x86_64-apple-darwin13.0.0
344    
345    checkpoint64s (2014/01/05)
346    o tools/adjoint_options:
347      - switch to fastopt.net TAF server (instead of default fastopt.de) for
348        AD optfiles adjoint_diva & adjoint_f95 (similar to adjoint_default).
349    o model/src:
350      - remove some unnecessary TAF storage directives in forward_step.F and
351        in dynamics.F (note: not always removed by TAF, e.g., double storage
352        of kappaRU,kappaRV in former version of dynamics.F).
353    o model/src & pkg/ptracers:
354      - call directly GAD_IMPLICIT_R & IMPLDIFF + DWNSLP_APPLY from temp_integrate.F
355        salt_integrate.F and ptracers_integrate.F (instead of from thermodynamics.F)
356        and remove ptracers_dwnslp_apply.F & ptracers_implicit.F
357      - call MATRIX_STORE_TENDENCY_EXP for each tracer (in ptracers_integrate.F)
358      - add fZon & fMer as output argument of S/R GAD_CALC_RHS.
359      - update TAF AD-output of experiments global_ocean.90x40x15 (13 for AD-grad).
360    o useSingleCpuInput separates single-CPU input from single-CPU output;
361        for now only implemented for in exf_interp_read.F
362    o verification/advect_xy:
363      - fix missing EXCH call in local version of ini_salt.F and update output.
364    o momentum diagnostics:
365      - fix which deltaT is used in Total-Tendency diagnostics.
366      - fix typo in diagnostics for momentum tendency from AB.
367    o pkg/seaice/seaice_lsr.F: fix an initialisation bug for the
368        SEAICE_VECTORIZE_LSR_ZEBRA option that lead to NaNs on a NEC-SX8
369    
370    checkpoint64r (2013/12/08)
371    o verification/*/results:
372      - Update reference output of experiments that were passing with just 13 digits
373         (make it easier to detect future changes in results)
374    o model/src & pkg/ptracers:
375      - move calls to GAD_ADVECTION (Multi-Dim advection) from thermodynamics.F to
376        inside temp_integrate.F and salt_integrate.F and from ptracers_advection.F
377        to inside ptracers_integrate.F ; remove ptracers_advection.F
378    o coupling interface pkgs:
379        [atm_compon_interf, ocn_compon_interf & atm_ocn_coupler]
380      - change the config check to test the agreement of Ocean Depth
381        with ATM land/sea mask (instead of ATM orography);
382      - send to coupler the number of coupler time-steps to do for this run:
383        this allows to check for consistency and don't need anymore to be
384        specified in parameter file "data";
385      in coupler:
386      - check consistency of RunOff map versus Ocean Depth and ATM land/sea mask.
387      - improve report to log-file of config setting (pass log-file unit to few S/R)
388    o pkg/compon_communic:
389      - add coupling send/receive for non-tiled integer vector;
390      - add S/R to check and stop if any proc has an error (similar to
391        eesupp/src/stop_if_error.F but single thread and across Comm_World).
392    o pkg/exch2:
393      - in exch2*_get_rx[1,2]: use new list "W2_tileIndex" to replace search
394        through list of all tiles my proc owns.
395    o model/src:
396      - AUTODIFF only: in calc_adv_flow.F, recompute rTransKp (instead of copying
397        from rTrans) to simplify dependencies (no need to store rTrans anymore in
398        calling S/R); this affects AD results at machine truncation level:
399        update AD-output (TAF) of experiments: 1D_ocean_ice_column,
400        bottom_ctrl_5x5 & obcs_ctrl (12 digits for AD grad, same FWD grad).
401    o tools/build_options:
402      - simplify Warnings options (-ieee & -devel cases) in linux_amd64_gfortran
403    o coupling interface pkgs:
404        [compon_communic, atm_compon_interf & ocn_compon_interf]
405      - move declaration of local array "ibuf" out of header file "CPLR_SIG.h"
406        to each S/R that needs it; remove un-used variables.
407      - change component tile registration (cpl_register.F in both compon_interf
408        and mitcomponent_tile_register.F) to pass the full list of tiles
409        information (including bi,bj) in 1 vector (instead of in a bi,bj matrix).
410      - with pkg/exch2: adopt the same convention used for I/O to define mapping
411        towards coupler global array (unless W2_useE2ioLayOut=F):
412         a) can now use different tiling between atm & ocn comp.
413         b) no needs to modify the run-Off map when changing tiling (was needed
414            even if using the same tiling between atm & ocn).
415         c) will allow to run with blank-tiles in 1 component (e.g., for ocean
416            full land tiles); not yet tested.
417      - check for valid mapping from comp. tile to coupler global array
418      - improve report of tile registration results to log file.
419    o pkg/exch2:
420      - in eesupp/src/eeboot.F: move call to W2_EEBOOT before Coupler
421        tile-registration (CPL_REGISTER);
422      - activate (un-comment) definition and setting of "W2_tileIndex" list to
423        store the local bi,bj indices of each tile;
424      - also print bi,bj in local report to log file;
425      - fix pkg/debug/debug_cs_corner_uv.F for the case nSy > 1 (left from
426        Jun 2009 modif of pkg/exch2).
427    o testing on baudelaire:
428      - run 2 tests at a time: no significant slow down (since enough cpu) and
429        get the full set of test done earlier
430      - switch the ifort test to "-devel" ; run the OpenAD test everyday.
431    o model/src/thermodynamics.F and routines called from it:
432      - pkg/gmredi: gmredi_residual_flow.F (replacing gmredi_calc_uvflow.F &
433        gmredi_calc_wflow.F) to update eulerian velocity (input) into residual
434        velocity (outp) by adding bolus velocity.
435      - model/src: calc_adv_flow.F (replacing calc_common_factors.F) to compute
436        mass transport from velocity + lateral grid cell area
437      - rename calc_gt.F to temp_integrate.F (includes call to TIMESTEP_TRACER)
438      - rename calc_gs.F to salt_integrate.F (includes call to TIMESTEP_TRACER)
439     in thermodynamics.F
440      - remove k from thermodynamics.F and move it to temp_integrate.F
441        salt_integrate.F and ptracers_integrate.F (now done inside the tracer
442        loop).
443      - compute locally (in thermodynamics.F) 3-D velocity field that is used to
444        advect tracers; pass it as argument to GAD_ADVECTION, GAD_SOM_ADVECT,
445        PTRACERS_ADVECTION, TEMP_INTEGRATE, SALT_INTEGRATE, PTRACERS_INTEGRATE,
446        GAD_IMPLICIT_R and PTRACERS_IMPLICIT
447      - update AD-output (TAF & OAD) of experiments: 1D_ocean_ice_column,
448        global_ocean.90x40x15, tutorial_global_oce_biogeo and
449        tutorial_tracer_adjsens (+ TLM output).
450    o tools/OAD_support and (verification/*/) code_oad:
451      - OAD_support/cb2mGetModules.csh: add PACKAGES_CONFIG.h in header file to
452        module conversion ; remove unneeded CPP_EEOPTIONS.h.
453      - code_oad/CPP_OPTIONS.h: remove PACKAGES_CONFIG.h and use a more standard
454        version (closer to model/inc/CPP_OPTIONS.h).
455    o model/src:
456      - remove parameter "useOldFreezing" from PARAMS.h and push it to the
457        retired list of parameters (routine FREEZE has been replace by surface
458        freezing (10.yrs ago) and by pkg/frazil (interior freezing).
459    o pkg/gmredi:
460      - add option (GM_CALC_TRANSP_FROM_VEL) to compute transport directly from
461        velocity (same scheme but affects machine truncation) for GM_AdvForm.
462      - update output of FWD experiments: front_relax.bvp,
463        global_ocean.90x40x15.dwnslp, global_ocean.cs32x15 and ideal_2D_oce.
464    
465    checkpoint64q (2013/11/17)
466    o verification:
467      - generate new output on baudelaire (gfortran, -ieee) for OpenAD experiments
468        tutorial_global_oce_biogeo and global_ocean.90x40x15.
469      - generate new output (growth & melt) for seaice_itd experiment after
470        updating the input pickup_seaice files (previously wrong).
471    o pkg/cost:
472      - define a "final cost function" for each tile, and use GLOBAL_SUM_TILE_RL
473        (instead of _GLOBAL_SUM_RL) to get the final cost from all procs & threads:
474        o this fixes global-sum value if multi-threads (since GLOBAL_SUM_RL
475          cannot be applied to var in common block).
476        o allows to get results independent of tile-per-proc setting (if using
477          slower GLOBAL_SUM_SEND_RECV option).
478      - update accordingly: seaice_cost_final.F, shelfice_cost_final.F,
479        thsice_cost_final.F and ecco_cost_final.F (this one affects lab_sea
480        forward gradients: update output).
481      - update */code_oad/externalDummies.F by adding dummy GLOBAL_SUM_TILE_RL
482        S/R and, for most exp., also comment out GLOBAL_SUM_R8.
483    o pkg/mom_common:
484      - move to pkg/mom_common and model/src (previously in tutorial_deep_convection
485        code) 2nd version of isotropic 3-D Smagorinsky code interface: strain and
486        viscosity are locally declared in dynmics.F and pass as argument to CALC_GW;
487        ensure that all field value that are used are set.
488    o tutorial_deep_convection (smag3d):
489      - add missing scaling in mom_calc_smag_3d.F;
490      - set smag3D_coeff in input.smag3d such that results do not change.
491    o pkg/dic:
492      - change dic_cost.F to compute cost on each tile first and then apply
493        GLOBAL_SUM_TILE_RL: this affects forward gradient of AD experiments
494        tutorial_dic_adjoffline & tutorial_global_oce_biogeo; update output.
495      - remove kLev argument and use GLOBAL_SUM_TILE_RL in tracer_meanarea.
496    o eesupp/src & pkg/mdsio:
497      - remove gather/scatter_vector.F (from eesupp) and mdsio_read/writevector.F
498        (from pkg/mdsio) since they are no longer used for tape IO.
499      - move simple C subroutine "setdir.c" from pkg/compon_communic to eesupp/src
500        (+ keep a copy in pkg/atm_ocn_coupler).
501    o verification/isomip:
502      - split domain in 8 squared tiles (instead of just 2) for FWD, AD & OAD tests.
503    o tools/build_options:
504      - optfile linux_amd64_ifort11, fast (no ieee) case:
505        to get a working restart for all experiments, add "-fp-model source"
506        to FOPTIM (also remove "-opt-streaming-stores auto" <- this is the default).
507    
508    checkpoint64p (2013/10/20)
509    o pkg/autodiff:
510      - adread_adwrite.F: when type and length do not match ALLOW_AUTODIFF_WHTAPEIO
511        criteria, return to simple (default) tape IO format.
512    o pkg/mdsio (+ eesupp/src):
513      - rewrite/simplify tape-IO S/R (new S/R MDS_READ/WRITE_TAPE replace
514        previous MDSREAD/WRITEVECTOR) with 2 array argument from each type (R4/R8);
515      - fix globalFile and singleCpuIO options using simpler global mapping.
516      - new pairs of scatter/gather vector S/R (one for each type, generated from
517        template) corresponding to simpler global mapping.
518      - adread_write.F: switch to new S/R (but leave old calls commented) and write
519        to globalFile when parameter globalFiles is set to True.
520      - switch on useSingleCpuIO in AD experiments: global_ocean.90x40x15 & isomip.
521    o pkg/autodiff:
522      - adread_adwrite.F: add a hack for RS arrays (when RS=real*4);
523        with ALLOW_AUTODIFF_WHTAPEIO defined, since corresponding (real*4) is
524        missing, just add a STOP if array type do not match.
525    o pkg/exf:
526      - to allow to use seaice-fraction from pkg/exf in other pkgs than pkg/seaice:
527         rename CPP option EXF_ALLOW_SEAICE_RELAX to EXF_SEAICE_FRACTION
528         and rename array obsSIce to exf_iceFraction.
529    o tutorial_deep_convection:
530      - add 1rst version of isotropic 3-D Smagorinsky code (from Louis-Philippe),
531        for now all in this exp. code dir.
532      - add secondary test using Smag-3D viscosity (keep very low backgroud visc for
533        testing) and flux-limter advection scheme for Temp. (no explicit diffusion).
534    o eesupp/src:
535      - added SINGLE_DISK_IO option because reading of parameter files on
536        very large number of processors did not work with existing set-up
537    
538    checkpoint64o (2013/09/25)
539    o pkg/atm_phys & atm_compon_interf:
540      - allows for coupling of gray-atmosphere (atm_phys) with ocean.
541    o tools/build_options:
542      - switch from "-fPIC" to "-mcmodel=medium" in optfiles: linux_amd64_gfortran
543        & linux_amd64_ifort11 and in linux_amd64_g77 & linux_amd64_open64 also
544        remove CPP setting (was identical to genmake2 default).
545    o pkg/gmredi & model/src: Some updating and work done on the residual model.
546      - created new file model/src/calc_eddy_stress.F to calculate the eddy stress.
547      - fixed up the calculation of the eddy stress and how it is added to the
548        external forcing via taueddy_external_forcing.F
549      - at the moment, it is very experimental and only works with the variable eddy
550        diffusivity calculated in gmredi_k3d.F
551    o pkg/seaice/seaice_check.F: add a check to catch the case of specifying
552        lw/swfluxfile instead of lw/swdownfile in data.exf together with pkg/seaice
553    o testreport (& tools/do_tst_2+2):
554      - for MPI test, set default COMMAND to 'mpirun -v -np TR_NPROC ./{executable}'
555    o tools/build_options: linux_amd64_gfortran & linux_amd64_ifort11:
556      - remove CPP='cpp -traditional -P' (this is genmake2 default)
557      - add switch (for big setups) to use 'medium' memory-model (but leave it
558        commented out for now). Note: needed with FC 19 to compile big setups.
559    o pkg/atm_compon_interf:
560      - regroup per field origin (model & pkgs) the coupling storage routines
561         (which accumalate in time each coupling field)
562      - move bi,bj loops inside atm_store_my_data.F and store also wind-stress;
563        update accordingly + simplify aim_do_physics.F
564    
565    checkpoint64n (2013/08/26)
566    o pkg/bbl:
567      - update formulation to reduce dispersion of tracer properties in bbl
568      - replaced horizontal and vertical transport parameters with velocities
569      - changes results for verification/global_with_exf.yearly
570    o verification/halfpipe_streamice:
571      - change to matrix construction; update both Fwd & AD output.
572    o verification/tutorial_tracer_adjsens:
573      - OpenAD test: switch to vector-invariant momentum since fluxform with
574        rStar causes problems with OpenAD; update output.
575    o tools:
576      - genmake2: define a common prefix for all temp-file names ; move them
577        to local /tmp disk (but would be easy to move them back);
578      - xmakedepend: apply the same switch for temp-files.
579    o pkg/offline:
580      - changes for use with rStar (NLFS): assume that we continue to provide
581        UVELMASS/hFacW_ini & VVELMASS/hFacS_ini (hFacWi,S_ini as written in grid
582        output files) and apply r* scaling at each time-step (function of the time
583        varying Eta field); use normal pickup files (needed for restart with NLFS).
584    o adjoint with OpenAD:
585      - move OpenAD-specific files from verification/OpenAD/code_oad_all to a new
586        package openad.  This package has to be compiled for all runs with OpenAD
587        instead of specifying code_oad_all as a modification directory.
588      - link the fortran templates from tools/OAD_support to the build directory
589        for preprocessing to avoid conflicts between different setups compiled
590        simultaneously and simplify cleanup.
591    o pkg/exf:
592      - in exf_getforcing.F: comment out most of the EXCH calls (fields used by
593        main model or other pkgs are exchanged in EXF_MAPFIELDS).
594    o model/src:
595      - do_stagger_fields_exchanges.F: skip EXCH calls when using pkg/offline
596        (similar to do_fields_blocking_exchanges.F).
597    o tools/genmake2:
598      - remove TAF output src code just before calling staf (when not doing a fresh
599        built, will stop if things go wrong with staf).
600      - fix target "adobj" (left from TAF version-2 transition)
601    o pkg/diagnostics:
602      - add a parameter to track the status of pkg/diagnostics activation;
603        this replace/extend the use of logical param "settingDiags" (to check
604        when adding diag to the list) to also check any DIAGNOSTICS_[]FILL* call.
605        New S/R to print error message and stop when pkgStatus is not right.
606      - to try: add a warning when "data.diagnostics" exist but useDiagnostics=F.
607    
608    checkpoint64m (2013/08/13)
609    o model/inc:
610      - move FCORI_MACROS.h from PARAMS(_MACROS).h to GRID_MACROS.h (left from
611        8 yrs ago modif when Coriolis arrays were moved from PARAMS.h to GRID.h)
612    o pkg/kpp & aim_v23:
613      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
614    o pkg/seaice:
615      - restore (last time on 2011/12/24) ability to compile pkg/seaice with
616        undefined pkg/exf ALLOW_ATM_TEMP or ALLOW_RUNOFF CPP-options.
617      - only call DIAGNOSTICS_FILL when useDiagnostics=TRUE.
618    o eesupp/src:
619      - fix check for overlap-size argument (myOLn.GT.MAX_OLY_EXCH)
620        in exch1_rx[_ad].template (thanks to Francois Lefeuvre report).
621    o switch to TAF version-2:
622      - add flow directives to "freeze" naming convention for ad-routines that
623        are used in I/O routines of adjoint state and associated common blocks
624        that are used in adcommon.h (backward compatible with version-1)
625      - update all ad-optfiles (in tools/adjoint_options + few local to some
626        verification exp) to switch to latest TAF version (currently 2.5.5);
627        merge "*_mpi" adoptfiles into the corresponding non-mpi (but commented
628        out except for diva).
629      - the major change with TAF version-2 is that both the differentiated
630        routines and the forward routines (new) are returned as part of the TAF
631        output source code. Update genmake2 accordingly.
632      - new output for AD experiment tutorial_global_oce_biogeo (better AD gradient
633        with version-2 when compared to TLM or FWD gradient); other experiments
634        output show minor changes (machine truncation level); update the few AD &
635        TLM output with 12 matching digits only (some prior to version-2 switch).
636    
637    checkpoint64l (2013/08/05)
638    o model/src:
639      - in dynamics.F, skip the call to CALC_VISCOSITY if momViscosity=F
640      - main_do_loop.F: no longer includes additional (AUTODIFF) header files
641        when using TAF but only if using OpenAD.
642    o pkg/mom_common+fluxform+vecinv:
643      - always set horiz. viscosity arrays to background value before calling
644        MOM_CALC_VISC (in MOM_FLUXFORM & MOM_VECINV) and call S/R MOM_CALC_VISC
645        only when using variable horiz. viscosity (useVariableVisc=T);
646      - simplify mom_vecinv.F (only 1 block for momViscosity).
647    o pkg/mom_common: variable horiz. viscosity in NH code
648      - move horiz-viscosity 3-D arrays viscAh_W & viscA4_W (used in calc_gw.F)
649        from model/inc/NH_VARS.h to pkg/mom_common/MOM_VISC.h
650      - store in common block (in MOM_VISC.h) logical parameters: useHarmonicVisc,
651        useBiharmonicVisc & useVariableVisc.
652      - fix old bug (already in 1rst implementation of variable horizontal viscosity
653        in calc_gw.F, version 1.27, 2006/06/20):
654        horizontal bi-harmonic viscosity in gW was missing when wiscA4W=0
655        even if variable bi-harmonic viscosity (e.g., viscA4Grid) was non-zero.
656      - change background horiz viscosity in vertical momentum (gW) to always be
657        viscAhW,viscA4W (instead of switching to viscAhD, viscA4D when using
658        any type of variable viscosity, e.g., viscAh/4Grid)
659      - change default value of viscAhW,viscA4W to viscAhD,viscA4D (instead of
660        viscAh,viscA4) which default to viscAh,viscA4 :  this avoid missing
661        horiz. viscosity in W eq when just setting viscAhD/Z,viscA4D/Z (since
662        default viscAh,viscA4 is zero).
663    o model/src:
664      - extend length of drC & recip_drC from Nr to Nr+1.
665    o Divided Adjoint (DIVA) with MPI:
666      - genmake2: do not create local ./mpi_headers dir when no file to copy into.
667      - remove option ALLOW_DIVIDED_ADJOINT_MPI (replaced by ALLOW_DIVIDED_ADJOINT
668        and ALLOW_USE_MPI) from model/src code and from ECCO_CPPOPTIONS.h.
669    
670    checkpoint64k (2013/07/23)
671    o tools/OAD_support:
672      - avoid the need for file "oadtempflile" in insertTemplateDir.bash
673        and remove it from genmake2.
674    o tools/build_options:
675      - remove MPI_HEADER_FILES_INC setting (no longer used) and comment out
676        MPI_HEADER_FILES list (let genmake2 find the missing headers)
677    o verification/halfpipe_streamice:
678      - change to driving stress formulation; update both Fwd & AD output.
679    o tools/genmake2 and Divided Adjoint with MPI:
680      - remove default setting of MPIINCLUDEDIR from $MPIHOME (always been broken);
681      - only create local ./mpi_headers dir if using MPI and MPIINCLUDEDIR is set;
682      - add new variable (LOCAL_MPI_HEADERS, replace MPI_HEADER_FILES_INC) in
683        Makefile, which is set by genmake2, and check which mpi-headers are needed.
684        Note: need to update adjoint_options/adjoint_diva_mpi accordingly.
685      - update target "CLEAN" (to also remove ./mpi_headers/ dir).
686    o testreport:
687      - changes for Divided Adjoint Run: when file "run_ADM_DIVA" is present,
688        perform additional runs (number of additional runs is "add_DIVA_runs" taken
689        from file run_ADM_DIVA ; should match "nchklev_3" in file "code_ad/tamc.h").
690    o verification/lab_sea (AD test):
691      - change to test Divided Adjoint Run in this set-up (both standard AD test
692        and 2 secondary AD test: noseaice + noseaicedyn); drop the evp AD test.
693    o pkg atm_ & ocn_compon_interf:
694      - remove cpl_earlyExpImpCall=F option (was mainly a hack added for the old
695        staggerTimeStep implementation) and disable (retired) corresponding
696        parameter.
697    o pkg/offline:
698      - comment out unused field-array: ICEM, ConvectCount, hflx[01], icem[01];
699      - add S/R OFFLINE_CHECK to print offline parameter summary
700        and stop if loading a file that is not used;
701      - enable to calculate GMRedi tensor, KPP mixing and convective index
702        when the corresponding file(s) is/are not specified (but pkg is used).
703      - comment out resetting of monitorFreq (to endTime) since it still useful
704        for monitoring CFL numbers and checking offline fields.
705    o OpenAD:
706      - do not define OAD_DEBUG (in tools/adjoint_options/adjoint_oad) to get
707        smaller standard output) and generate new (smaller) output (on baudelaire
708        using gfortran with -ieee) for exp. tutorial_tracer_adjsens
709    o model/src:
710      - call EXTERNAL_FORCING_SURF outside bi,bj loops (in do_oceanic_phys.F),
711        (where external_forcing_adjust was called) and change list of arguments;
712      - merge external_forcing_adjust.F into external_forcing_surf.F
713      - put surface relaxation of SST & SSS in new S/R (forcing_surf_relax.F)
714        which also contains balancing surface relaxation (ALLOW_BALANCE_RELAX,
715        previously in file "balance_relax.F", now removed); remove corresponding
716        arrays in FFIELDS.h.
717      - EXTERNAL_FORCING_SURF is now called when using pkg/offline; implement
718        a hack for getting back surfaceForcingS (loaded from file) when using
719        ALLOW_OLD_VIRTUALFLUX (pkg/dic, in DIC_OPTIONS.h) in offline set-up.
720      - update output of AD test experiment global_ocean.cs32x15.seaice_dynmix
721        (was getting only 11 digits for AD-grad, due to different truncation
722         error in AD code).
723    
724    checkpoint64j (2013/07/04)
725    o pkg/offline:
726      - to enable the use of other features with pkg offline (e.g., obcs),
727        also call S/R DO_OCEANIC_PHYS in offline run - more modifs to come.
728      - comment out "allowFreezing" (now active) in 2 offline testing exp.
729    o pkg/exf ALLOW_RUNOFTEMP
730      - fix sign and make compatible with temp_EvPrRn .NE. UNSET_RL
731      - ahdded RUNOFTEMP test to verification/global_ocean.cs32x15/input.seaice
732      - changes verification/global_ocean.cs32x15/results/output.seaice.txt
733    o pkg/atm_phys:
734      - allows to add some damping on uVel,vVel (strength only function of k).
735    o verification, ad-tests:
736      - reduce length of the simulation for AD test: global_ocean.cs32x15.seaice,
737        global_ocean_ebm and offline_exf_seaice.thsice.
738    o verification/halfpipe_streamice:
739      - found a bug in s/r pkg/streamice/streamice_advect_thickness which caused
740        flux input boundary conditions to be ignored; a fix for this bug changed
741        verification results for forward test.
742      - add adjoint test.
743    o pkg/ptracers:
744      - allow to restart without SOM pickup (resetting SOM to zero).
745    o pkg/gmredi:
746      - New parameterisation for the calculation of K and (GM_PsiX,GM_PsiY) added.
747      - It uses mixing length theory and suppression by steering level effects to
748        calculate a diffusivity used in the Redi tensor (see Bates et al., submitted
749        to JPO, for more details).
750      - It also uses the diffusivity to calculate an eddy induced streamfunction
751        based on a PV closure (rather than a buoyancy closure as in GM).
752      - New files added to pkg/gmredi:
753        gmredi_k3d.F calculates the diffusivity for the Redi tensor and the eddy
754          induced overturning streamfunction (called from gmredi_calc_tensor)
755        gmredi_calc_eigs.F calculates the eigenvalues and eigenvectors required
756          for use in gmredi_k3d
757        gmredi_calc_urms.F calculates the the rms eddy velocity used to calculate
758          the eddy diffusivity
759    
760    checkpoint64i (2013/06/18)
761    o pkg/cheapaml:
762      - take src files from MITgcm_contrib/verification_other/offline_cheapaml/code
763        that enable the use of seaice (pkg/thsice thermo & pkg/seaice dynamics)
764        with pkg/cheapaml.
765    o utils/python: add subpackage for cubed sphere function, first example is
766        simple cs.pcol to plot 2D fields on a map
767    o pkg/streamice:
768      - This is a new package in MITgcm, which solves dynamic equations for ice
769         sheets and ice streams
770      - At the moment it is independent of atmosphere/ocean dynamics, or any
771        other physical packages in MITgcm, even ShelfIce (although it is anticipat-
772        ed that this will change)
773      - There is a new verification exercise that tests it, halfpipe_streamice,
774        evolves a 40x80 km ice stream/ice shelf (at coarse resolution) in a
775        rectangular embayment
776      - halfpipe_streamice is forward-only for now, will have TAF test soon
777      - for questions, email dgoldber@mit.edu
778    o pkg/thsice:
779      - fix filling of snow-precip diagnostic (SIsnwPrc) (left from the removing
780        of snowPrc from common bloc, on May 2nd, thsice_step_fwd.F revision 1.40);
781      - remove diagnostics 'SI_FrcFx' ( now identical to 'SI_Fract' with new
782         call sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect );
783      - allow precip from pkg/cheapaml to make snow over seaice.
784    o pkg/cfc:
785      - move in separated header file (CFC_ATMOS.h) time-serie arrays of Atmos CFC
786      - remove atmos CFC 2-D arrays from common bloc (now local variables)
787      - change some hard-coded constant to run time parameter for reading and
788        and interpolating atmospheric CFC ; keep same default as previously.
789      - more flexible reading of Atmos CFC (number of records no longer hard-coded)
790      - put arguments in standard order: myTime, myIter, myThid
791      - use standard S/R GET_PERIODIC_INTERVAL for time interpolation of
792        atmospheric CFC ; fix for the case myIter < PTRACERS_iter0.
793      - fix calculation of surf tendencys for partial-cell and/or Non-Lin Free-Surf
794      - new routine to print summary of CFC params and check for consistency.
795    o pkg/seaice: add uice/vice to the parameter list of s/r seaice_advdiff,
796      similar to thsice_advdiff.
797      Note that for the B-grid case the routine parameters uc/vc are overwritten.
798    o pkg/cfc:
799      - change time interpolation for atmospheric CFC-11 (now same as for CFC-12);
800        update output (CFC-11) of experiment cfc_example and tutorial_cfc_offline.
801      - fix interpolation of atmphspheric CFC between Sorthern and Northern
802        hemisphere value.
803    o pkg/seaice:
804      - allow to use seaice dynamics without pkg/exf (e.g., using pkg/cheapaml)
805    o pkg/seaice: add Adams-Bashforth2 time discretization for ice dynamics;
806                  so far only for JFNK-solver, turn on with SEAICEuseAB2 = .TRUE.
807      - requires an additional time level that is stored in the pickup
808      - you can start with AB2 from a pickup without this time level with
809        pickupStrictlyMatch = .false.
810    
811    checkpoint64h (2013/05/26)
812    o pkg/cheapaml:
813      - replace one ()**.5 with SQRT + use temp var "cdu = tau/Du" (coare3_flux);
814        affect machine truncation (but exp cheapAML_box still pass with 13 digits).
815      - consistent treatment of uWind,vWind location: assume everywhere in
816        pkg/cheapaml that they are on C-grid (@ uVel,vVel location)
817        (Note: was already the case for Tair,Qair advection);
818        add option (INCONSISTENT_WIND_LOCATION) to recover old results.
819      - compute diabatic forcing only in the interior (excluding overlap regions)
820      - fill in array "Qsw" (for short-wave heating);
821      - add diagnostic for precip ; fill-in diagnostics for cheapAML state vars
822        before any update (consistent with MITgcm state var diagnostics);
823      - cheapaml_fields_load.F & cheapaml_init_varia.F : only fill outer edges if
824        non periodic ; + adjusted for uWind,vWind (C-grid).
825    o pkg/seaice:
826      - remove dependence of pkg/seaice versus pkg/exf (file: pkg/pkg_depend) and
827        add explicitly pkg/exf in experiments that currently use pkg/seaice.
828      - allows to compile pkg/seaice without pkg/exf.
829    o tools/OAD_support:
830      - use a local copy (ourRWCPinBd) to ensure index ourRWCP stays within bounds
831        of array "ourStepOf" in function rvNextAction (revolve.F90).
832    o pkg/aim_compon_interf renamed to pkg/atm_compon_interf
833      - change pkg name (to be used with other atmospheric physics pkg)
834        but by-pass CVS when making the new pkg so that we keep the CVS history.
835    o pkg/offline:
836      - call OFFLINE_FIELDS_LOAD from pkg/offline/offline_init_varia.F
837        (previously called from pkg/dic_surfforcing_init.F)
838    o model/src:
839      - re-order sequence of calls within packages_init_variables.F, using
840        standard order, except for:
841         DIAGNOSTICS_INIT_VARIA and OFFLINE_INIT_VARIA (called @ the top),
842         CTRL_MAP_INI and OBCS_INIT_VARIABLES (called @ the bottom)
843    o new pkg: atm_phys
844      - add entry point and source code (previously in contrib
845          verification_other/atm_gray/code_gray/) for new pkg "atm_phys"
846        (atmospheric physics pkg from P. O'Gorman and T. Schneider, JCl, 2008).
847      - re-order sequence of calls within packages_readparms.F,
848         packages_init_fixed.F and packages_write_pickup.F
849        (but skip packages_init_variables.F because of TAF issues).
850      - update contrib/*/atm_gray/ experiment.
851    o pkg/seaice (ITD code):
852      - simplify and fix the writing of pickup-files for ITD case
853    o pkg/seaice (ITD code):
854      - introduce floe size dependent lateral melt for ITD case;
855      - cleaning (avoid division by zero, change to f77 syntax, remove tabs)
856      - update seaice_itd experiment main output.
857    o pkg/thsice:
858      - remove snowPrc from common block THSICE_FLUX, in THSICE_VARS.h and
859        declared it locally (without bi,bj) in thsice_main.F & aim_do_physics.F;
860        changed accordingly pkg/atm2d.
861    
862    checkpoint64g (2013/05/01)
863    o pkg/exf ALLOW_RUNOFTEMP
864      - if defined,  river and glacier runoff temperature can be read-in from
865        runoftempfile; runoftempfile needs to have same format as runofffile
866    o pkg/thsice (& pkg/bulk_force):
867      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
868        for energy content of Precip + RunOff & Evap (like with pkg/exf).
869      - change computation domain to always be the interior (without overlap).
870      - fix bug (wrong overlap) when using EXF and stressReduction > 0.
871    o verification/tutorial_global_oce_biogeo:
872      - add preliminary OpenAD setup (still has problems)
873    o pkg/seaice:
874      - turn some parameters for choosing the convergence criterion of
875        the inexact Newton method (JFNK) into runtime parameters for convenience
876      - clean up seaice_calc_viscosities.F: remove/retire two options for
877        SEAICetaZmethod (1,2), introduce area weighting for method 3; this changes
878        the results of lab_sea/input because a division has been replaced by
879        a multiplication with the reciprocal (sumNorm)
880      - modify offline_exf_seaice/input.dyn_jfnk/data.seaice to improve
881        convergence of solver (changes results, of course), and to test some
882        new features
883    o model/src:
884      - remove unused (since Aug 2006) S/R SET_WRITE_GLOBAL_PICKUP and its call.
885      - remove unused forcing field "dQdT" and associated parameter "dQdTFile".
886      - move forcing adjustment (balancing surface forcing) in specific S/R
887        where might also be applied exchanges (if needed) to forcing arrays.
888    o pkg/shelfice:
889      - allow to specify the Ice-Shelf mass per unit area (instead of
890        shelficeLoadAnomaly) and do the conversion from one to the other
891      - move loading from file of shelficeLoadAnomaly from SHELFICE_INIT_VARIA
892        to SHELFICE_INIT_FIXED: (a) avoid some TAF recompution issues and
893        (b) will be loaded in time (before calling INI_PRESSURE) in case it is
894        needed in phi0surf for initial pressure calculation when useDynP_inEos_Zc
895      - update isomip experiment forward output (get machine truncation error
896        from conversion shelficeLoadAnomaly -> shelficeMass -> shelficeLoadAnomaly)
897    o verification/offline_exf_seaice:
898      revise data.seaice in input.thermo and input_ad and update results accordingly
899        HO = 0.2, SEAICE_areaLossFormula = 2,
900        SEAICE_growMeltByConv = .TRUE.,
901        SEAICE_doOpenWaterMelt = .TRUE.,
902      Improve consistency with input.thsice and fix the spurious 500m ice corners
903    o verification/global_ocean.cs32x15:
904      - set Energy Reference Level to liq. water @ 0 degC: temp_EvPrRn=0.,
905        in icedyn (thsice+seaice-dyn) test and update output.
906    o verification/offline_exf_seaice:
907      - adjust list of tested variables (with testreport) and update
908        standard test output with better slection of monitored fields.
909    o pkg/cd_code:
910      - swtich off Adams-Bashforth on the 1rst iteration. Update output of
911        experiment lab_sea.hb87
912    o tools/genmake2:
913      - change default makedepend from the system default to tools/xmakedepend:
914        When no makedepend is specified, select tools/xmakedepend it the test pass,
915        otherwise select the system default (if exist and pass the test) or
916        try to build cyrus-makedepend ; stop if none of the 3 works.
917    o pkg/exf & pkg/thsice:
918      - In case Energy-Reference-Level (ERL) is used (temp_EvPrRn=0), account
919        for energy content of Precip + RunOff & Evap. Assumes:
920       1) Rain has same temp as Air.
921       2) Snow has no heat capacity (consistent with seaice & thsice pkgs)
922       3) Run-Off comes at the temp of surface water (with same Cp)
923       4) Evap over ocean is released to the Atmos @ surf-temp (=SST); should be
924        put directly into Latent Heat flux & should use water-vapor heat capacity.
925       5) Evap over snow/seaice (pkg/thsice) assumes constant Lf+Lv (consistent
926        with snow having no Cp) => water vapor is released to Atmos @ 0^oC (=ERL).
927    o pkg/seaice: simplify the use of CPP flags in JFNK-related files
928        (compile when SEAICE_ALLOW_JFNK is defined)
929    o pkg/thsice:
930      - fix oceanic flux diagnostics & timeave (left from new sequence of calls
931        implementation): move THSICE_AVE call after the advection (called directly
932        from thsice_do_advect.F).
933    o verification/global_ocean.90x40x15 and OpenAD:
934      New experiment for OpenAD is identical to the one in input_ad except that
935        multiDimAdvection=.FALSE.,
936      There is still an issue with this.
937    o pkg/thsice:
938      - account for ice velocity (ocean relative velocity) in turbulent heat flux
939        at the base of the ice; update output of global_ocean.cs32x15 (icedyn)
940        and offline_exf_seaice (main test).
941    
942    checkpoint64f (2013/03/31)
943    o verification/OpenAD:
944      - new (smaller, without OAD_DEBUG) output_oadm.txt generated using gfortran.
945    o verification/isomip, pkg/shelfice and OpenAD:
946      - add OpenAD setup to this exp and make shelfice package work with OpenAD
947    o verification/tutorial_global_oce_biogeo:
948      - update AD and TLM output after turning off ALLOW_FE (in DIC_OPTIONS.h)
949    o verification/offline_exf_seaice:
950      - replace adjoint experiment (now similar to fwd input.thermo/ setup).
951    o verification/tutorial_tracer_adjsens, pkg/ptracers and OpenAD:
952      - add OpenAD setup to this exp and make ptracers package work with OpenAD
953    o pkg/seaice/seaice_evp.F:
954       mask the asymmetric contribution of the ice-ocean stress (when
955       the turningAngle is non-zero) over open water to avoid stripes
956       in the EVP-solutions after many EVP-substeps. This does not change
957       the verification experiment (because turningAngle=0 in that experiment),
958       but will affect other EVP solutions with turningAngle.ne.0
959    o verification, AD & TLM output:
960      - new TAF version 2.3.10 (previously 2.3.8) add more parenthesis in multiple
961        additions and multiplications which affect results at machine truncation
962        level. Update few AD output (1D_ocean_ice_column, bottom_ctrl_5x5,
963        lab_sea.noseaicedyn & offline_exf_seaice) and TLM output
964        (1D_ocean_ice_column & tutorial_tracer_adjsens.som81) which had only 12
965        digits of matching.
966    o pkg/seaice:
967       modify lsr-algorithm so that it vectorizes AND converges by using a
968       "zebra" method: split vector loop into two with step size 2; this
969       solves a general convergence problem for the JFNK solver on a vector
970       computer. It has the potential to even improve convergence for
971       non-vector machines, but it does change the results so it is turned
972       off by default. To turn on define CPP-flags SEAICE_VECTORIZE_LSR and
973       SEAICE_VECTORIZE_LSR_ZEBRA in SEAICE_OPTIONS.h
974    
975    checkpoint64e (2013/03/05)
976    o pkg/ecco and several verification experiments:
977       Remove special versions of the_model_main.F, the_main_loop.F, forward_step.F
978       from ecco package, and revert to unified routine in model/src/
979       Adjust verification experiments accordingly, especially gloal_oce_llc90
980       Should conclude long-standing work by Gael to reconsile the_main_loop with
981       ECCO and will enable OpenAD's revolve loop in ECCO setup.
982    o pkg/generic_advdiff:
983      - implement compressible flow method for multi-dim advection (similar to
984        gad_som_advect.F); add new option "GAD_MULTIDIM_COMPRESSIBLE" (since
985        TAF generates many recomputations) to use it; no yet coded with implicit
986        vertical advection.
987      - change experiment advect_cs (new output) and advect_xy (same output)
988        to test compressible flow multi-dim advection.
989    o pkg/generic_advdiff:
990      - fix SOM advection for unusual cases (linear Free-Surf in r*, other
991        cases where linear Free-Surf is not @ k=1, e.g., useShelfIce)
992    o pkg/seaice:
993      - fix bug in the no-slip implementation in seaice_calc_strainrates.F, this
994        bug affects two verification experiments (lab_sea and lab_sea.hb87),
995        recover old (wrong) results by setting noSlipFac = 2. in
996        seaice_calc_strainrates.F;
997      - add another averaging method for etaZ (etaZmethod=3), a mix of 2 and 0
998      - add runtime parameter SEAICE_JFNKepsilon for that finite difference
999        gradient in the Jacobian times vector operation (s/r seaice_jacvec)
1000      - fix line search in seaice_jfnk.F (s/r seaice_jfnk_update)
1001    o pkg/seaice: reorganize seaice_lsr.F to be able to reuse more code:
1002      - new subroutines seaice_lsr_tridiagu/v
1003      - introduce loop bounds i/jmin/max to be able to use a restricted
1004        additive Schwarz method, but not used for now.
1005      - rename SEAICE_CALC_LSR_COEFFS into SEAICE_LSR_CALC_COEFFS
1006      - use new subroutines seaice_lsr_tridiagu/v in s/r seaice_preconditioner
1007    o OpenAD support
1008       Reorganize S/R call for overall time-stepping loop to facilitate
1009       OpenAD revolve loop replacement
1010       (new S/R main_do_loop.F)
1011    o model/src:
1012      - add 3-D array 3rd dimension to argument list of S/R ADAMS_BASHFORTH2/3;
1013      - pkg/cheapaml: remove local S/R ADAMS2d and use instead standard S/R
1014        ADAMS_BASHFORTH2.
1015    o pkg/cheapaml:
1016      - add new parameter (default=F, same as before) to disable full domain
1017        (including land) periodicity in X & Y dir.
1018      - new S/R CHEAPAML_COPY_EDGES to copy relaxation field into edges of
1019        prognostics field ; merge the 2 S/R cycle_2d_tracer and timestep_2d_tracer
1020        into single S/R CHEAPAML_TIMESTEP.
1021    
1022    checkpoint64d (2013/02/17)
1023    o pkg/monitor (angular momentum):
1024      - do not add Eta contribution to the total AM if using rigid-lid;
1025      - correct for Adams-Bashforth in zonal-wind part (instead of in AM_eta).
1026      - horizontal discretisation: compute Zonal wind contribution separately for
1027        each component (instead of from cell centered averaged) and use the 4
1028        grid-cell corner averaged value of Omega*(R*cos_Phi)^2 in AM_eta part.
1029      - Check that AM is conserved with linear dynamics (momAdvection=F and linear
1030        FreeSurf) if using vectorInvariant momentum.
1031    o model/src (horizontal grid):
1032      - move initialisation of all horizontal grid arrays to null value
1033        from specific horizontal grid S/R to main S/R INI_GRID;
1034      - add 2 new arrays to project model C-grid velocity on to zonal direction
1035        (similar to AngleCosC & -AngleSinC but at U and V point location) and
1036        compute them in S/R CALC_GRID_ANGLES.
1037    o pkg/seaice: replace a hard coded parameter by a runtime parameter
1038        SEAICE_JFNK_tolIter
1039    o pkg/seaice: introduce a restricted additive Schwarz (RAS) method in
1040        preconditioner for JFNK (run LSR into the overlaps as far as possible,
1041        i.e OLx/y-2, but overwrite the solution in the overlaps)
1042      - extend loop range in seaice_calc_viscosity
1043      - add new parameters SEAICE_OLx/y (default = OLx/y-2)
1044      - add flexible loop ranges to seaice_preconditioner, seaice_calc_lsr_coeffs
1045      - slightly modify loops in tridiagonal solver lsr-preconditioner
1046      - by default remove the extra exchange in seaice_preconditioner with a
1047        replacement of an undocumented CPP flag by SEAICE_PRECOND_EXTRA_EXCHANGE
1048      - modify offline_exf_seaice so that old results without RAS are reproduced
1049        for output.dyn_jfnk.txt
1050      in seaice_fgmres.F (unrelated to RAS)
1051      - add a cpp-flag option for a re-ordered mapping (potentially more
1052        efficient), but because this changes the results, turn it off by
1053        default
1054      - replace the save statement by local common blocks
1055    o utils/matlab:
1056      - fix tile-offset in rdmnc.m when output was produced using EXCH2.
1057      - update cs_grid/bk_line scripts to use load_grid.m (in utils/matlab)
1058        instead of local script "load_cs.m".
1059    o pkg/seaice:
1060      - fix a serious bug in seaice_fgmres.F, s/r seaice_scalprod, connected
1061        to the scalarProductMetric and the unrolling. By chance this does not
1062        change the verification experiment, because of the particular domain
1063        decomposition
1064    o pkg/diagnostics:
1065      - change default missing_value from UNSET_RL to -999.
1066    o pkg/layers: improve vectorization of layers_fluxcalc.F
1067      - step 1: split loops, make TatU/V 2D arrays. This alone reduces the cpu
1068        time spent in this routine by more than a factor of 3 on an NEC-SX8
1069      - step 2: replace search algorithm by a bisection algorithm found in
1070        Press et al. Numerical Recipes in Fortran. This algorithm can be
1071        vectorized and finds the correct bin in approx. log2(Nlayers) steps.
1072        For now, use this algorithm only for TARGET_NEC_SX defined.
1073      - moved the search algorithm into a separate subroutine, that is kept
1074        within the same file for automatic inlining.
1075      - modified catching potential errors
1076    o pkg/ecco:
1077      - add compile switches ALLOW_SHALLOW_ALTIMETRY and ALLOW_HIGHLAT_ALTIMETRY.
1078    o model/src, pkg/autodiff, pkg/ctrl, pkg/grdchk :
1079      - modifications for ALLOW_GENTIM2D_CONTROL
1080      -- forward_step.F, the_main_loop.F : pass options and arrays for adjoint tapes.
1081      -- load_fields_driver.F : add call to CTRL_MAP_GENTIM2D( myTime, myIter, myThid )
1082      -- add xx_gentim2d0/1 in ctrl_ad_check_lev1_dir.h checkpoint_lev1_directives.h etc
1083      -- use ctrl_swapffields.F (new) instead of exf_SwapFFields.F in ctrl_get_gen.F
1084    o model/src:
1085      - account for moist thermodynamics in (dry) potential temperature equation;
1086        update results of experiments: aim.5l_cs (x2), fizhi-cs (std + aqualev)
1087        and cpl_aim+ocn.
1088      - also switch to standard compiler (gfortran, was using ifort previously)
1089        for fizhi-cs experiments reference output.
1090    o pkg/ctrl:
1091      - 1st step toward generic time-varying control variable (2D) via CPP option
1092        ALLOW_GENTIM2D_CONTROL
1093      - note new namelist ctrl_nml_genarr in data.ctrl
1094    o verification/global_ocean.cs32x15:
1095      - switch off OLD_THSICE_CALL_SEQUENCE (both forward and AD code) to use new
1096        thsice calling sequence and update "output.icedyn.txt" output file.
1097    o pkg/ptracers:
1098      - from Ryan A.: code to allow to restart a tracer at regular time interval
1099        specifying a reset frequency and a reset-phase (for each tracers).
1100    o pkg/thsice:
1101      - implement new sequence of calls for thsice+seaice:
1102          previously:   ice-Dyn,ice-Advect,ice-Thermo(thsice)
1103          new sequence: ice-Thermo(thsice),ice-Dyn,ice-Advect
1104      - allows (with temporary CPP option "#define OLD_THSICE_CALL_SEQUENCE"
1105        in CPP_OPTIONS.h) to recover old sequence;
1106      - update diagnostics for Intermediate State thsice diagnostics: now filled
1107        just before advection (instead of just after advection in old sequence);
1108      - update output of experiment offline_exf_seaice (standard test);
1109      - in global_ocean.cs32x15 exp., postpone output.icedyn.txt update
1110        by setting #define OLD_THSICE_CALL_SEQUENCE in CPP_OPTIONS.h
1111    o pkg/aim_v23:
1112      - use tiled array for aim_CO2 and surface wind speed for export to coupler;
1113      - use standard pkg/mdsio routines to read & write CO2 pickup file;
1114      - in-line S/R AIM_AIM2DYN_EXCHANGES in aim_do_physics.F;
1115      - Implement new sequence of calls for seaice advection (with thsice and
1116        seaice diffusion): do ice advection after ice-Thermodynamic (previously
1117        was done before); change aim_do_physics.F (split the bi,bj loops block);
1118      - use same CPP option (OLD_THSICE_CALL_SEQUENCE) to recover old sequence;
1119    o pkg/thsice:
1120      - add a missing EXCH of sIceLoad in thsice_main.F (ocean set-up) for the case
1121        where just seaice diffusion is used without seaice-dynamics.
1122    
1123    checkpoint64c (2013/01/18)
1124    o pkg/seaice:
1125      - add a parameter JFNKres_tFac that can replace JFNKres_t
1126        (= JFNKres_tFac*JFNKresidual before JFNK solver)
1127      - add a line search option to the JFNK solver
1128      - move update of u/vIce and computation of initial residual into a separate
1129        routine (same file); makes the code a little easier to read (?)
1130      - the line search requires computation of the residual and for some reason
1131        I cannot do the update of u/vIce at the beginning of the Newton loop
1132        without changing the results, so we move computation of the new residual
1133        also to the end of the Newton loop, even without the line search
1134    o pkg/mdsio:
1135      - write missing value (corresponding to undefined array value) to meta files;
1136        skip this if missing value is one (UNSET_RL would be a better value for the
1137        case of undefined missing value but it's current the default missing-value);
1138        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
1139    o pkg/exf & thsice:
1140      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
1141        diagnostics) even when SHORTWAVE_HEATING is #undef;
1142    o verification/cfc_example:
1143      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
1144        illustrate how to use it).
1145    o verification/offline_exf_seaice:
1146      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
1147        files to only one time-record.
1148      in input.thermo: narrow the 2 bands of low initial ice-concentration near
1149        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
1150        snapshot output; same mcPheePiston value as in thsice with
1151        surf-current=0.2m/s.
1152      in input.thsice: similar set-up as in input.thermo (channel with same seaice
1153        initial conditions).
1154    o verification/cfc_example:
1155      - update file "data" with more standard choice (default rotationPeriod,
1156        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
1157        set deltaTFreeSurf to deltaTtracer) and update the output.
1158    o pkg/layers:
1159      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
1160      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
1161    o verification/offline_exf_seaice:
1162      - set all {field}period to zero for constant-in-time forcing (not tested
1163        anywhere else).
1164    o verification/offline_exf_seaice:
1165      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
1166      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
1167    o model/src:
1168      - implement Finite-Volume method for (hydrostatic) presure gradient
1169        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
1170    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
1171      - In order to be compatible with the default EVP code, this requires changing
1172        the EVP code around a little; and because any small change immediately
1173        breaks the lab_sea.hb87 verification experiment, the reference output is
1174        updated two times (each time the remaining aggrement was only 2 digits):
1175        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
1176        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
1177        The adjoint test lab_sea.evp also needed to be updated.
1178      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
1179        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
1180        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
1181        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
1182        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
1183        kept obscure, because I need to test it a little more.
1184    o pkg/cheapaml:
1185      - fix few incorrect type (_RL/_RS) in subroutine calls.
1186    o pkg/seaice:
1187      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
1188        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
1189    o model/src:
1190      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
1191        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
1192        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
1193    o pkg/cheapaml:
1194      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
1195        update output of experiment cheapAML_box.
1196      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
1197        and set them only in one place (cheapaml_readparms.F).
1198      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
1199      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
1200        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
1201    o model/src/the_main_loop.F:
1202      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
1203    o pkg/seaice:
1204      - remove legacy branch code.
1205      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
1206    o verification/*/code*/SEAICE_OPTIONS.h:
1207      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
1208        SEAICE_CAP_HEFF).
1209    o pkg/cheapaml:
1210      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
1211        to load new forcing fields.
1212      - add missing "_d 0" where it's needed; + some editing (improve indentation).
1213      - remove switch to "-r8" compiler option (no longer needed) in verification
1214        cheapAML_box, keep same output (small trucation error differences).
1215    o verification/offline_exf_seaice:
1216      - add thermodynamics only test.
1217    o verification/cheapAML_box:
1218      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
1219        keep same output (same 14 digits for cg2d).
1220      - switch on "-r8" compiler option (some numerical values are missing
1221        the "_d 0") and update output (only 6 digits for cg2d were preserved).
1222    
1223    checkpoint64b (2012/12/24)
1224    o pkg/cheapaml:
1225      - remove un-used variables (Qnet,EmPmR) from pickup files.
1226      - store tendency of advected variables into cheapaml pickup file
1227        and fix the AB-2 restart.
1228    o verification/offline_exf_seaice and lab_sea adjoint:
1229      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
1230      - switch to 4 time steps in offline, consistent with lab_sea.
1231      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
1232      - update results after change of experiment seaice.
1233    o pkg/seaice:
1234      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
1235        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
1236        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
1237        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
1238    o model/src:
1239      - add run-time parameter to select CG2D solver minimum-residual solution
1240        (in case of a poor convergence).
1241    o pkg/seaice/seaice_lsr.F
1242      - move calculation of matrix coefficients into new
1243        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
1244        file; the main purpose of this change is to be able to reuse the code
1245        in S/R SEAICE_PRECONDITIONER
1246      - modify the computation of the residual so that the mass of sea-ice
1247        is not used twice; this simplifies the calculations, but since
1248        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
1249        not tested in testreport---this does not affect the testreport results.
1250    o verification/seaice_obcs:
1251      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
1252        verification/lab_sea/input.salt_plume; changes results/output.txt*
1253    o model/src:
1254      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
1255    o pkg/seaice:
1256      - improve description of parameters in seaice_fgmres.F and start
1257        cleaning up the code
1258      - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
1259        second argument
1260      - add a metric based on grid cell area to SEAICE_SCALPROD; update
1261        results of offline_exf_seaice.dyn_jfnk
1262      - compute initial residual norm in seaice_jfnk based on SEAICE_SCALPROD
1263    o pkg/aim_v23:
1264      - fix an other bug in dissipation heating (grid-cell area was missing).
1265    o model/src + pkg/seaice:
1266      - add global (multi-tile) linear solver for pair of tri-diagonal system
1267        along X and Y lines, respectively for U and V component.
1268        Note: 1) MPI and cube-exchange not yet coded.
1269            2) probably not accurate for poorly conditioned / large size problem.
1270      - add option for SEAICE_LSR to use global (multi-tile) tri-diagonal solver;
1271        default: not compiled and not used.
1272    o pkg/seaice:
1273      - first attempt at a multi-threaded fgmres solver for the JFNK solver:
1274        introduce bi/bj loops and use global_sum_tile_rl instead of
1275        mpi_allreduce in seaice_fgmres.F
1276      - improve diagnostics output for fgmres solver (seaice_fgmres.F)
1277      - replace a few unnecessary goto statements by if-blocks  (seaice_fgmres.F)
1278      - add a verification experiment for JFNK in offline_exf_seaice
1279    o verification:
1280      - change (for now, only fwd test) offline_exf_seaice experiment:
1281        use a re-entrant channel with idealized coastline (trapezoidal shape)
1282        at southern boundary to explore seaice dynamics and thermodynamics
1283        with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
1284        secondary test (input.thsice) use thermodynamics only with SST relaxation.
1285      - add seaice-dynamics only secondary test using LSR and pkg/thsice advection.
1286    o pkg/exf:
1287      - disable "sstExtrapol" when Nr=1
1288    o verification:
1289      - add new experiment "cheapAML_box" (simple 1 layer set-up from Bruno Deremble)
1290        to test pkg/cheapaml.
1291    o pkg/aim_v23 & pkg/shap_filt:
1292      - fix dissipation heating (erroneous gravity multiplication factor).
1293    o pkg/seaice:
1294      - remove unused field pressPre from jfnk solver
1295      - rename two subroutines in seaice_preconditioner.F
1296    o eesupp/src:
1297       - S/R MDSFINDUNIT avoids reserved unit numbers (scrUnit1, eeDataUnit ...)
1298    o pkg/seaice/seaice_preconditioner.F: fix preconditioner once again
1299       - remove wrong parts of the rhs and the lhs (were in there
1300         because I did not understand the concept of this preconditioner)
1301       - add an exchange between u- and v-sweep. This increases communication
1302         by a factor of two but improves the convergence of jfnk. Ideally,
1303         one would like the u- and v-sweep to be independent. So far within
1304         undocumented ifdefs
1305       - reorganize the extra computations for printing the residuals
1306    o tools/genmake2:
1307      - comment out the "mpif.h" include in NetCDF test programm (for MPI built)
1308        since it's not necessary (and was preventing to use MNC in some cases).
1309    
1310    checkpoint64a (2012/11/16)
1311    o pkg/autodiff:
1312      - improve pkg-internal logical parameter switch (inAd/inFwd mode) so that
1313        autodiff_readparms.F no longer depends on calling order (within
1314        packages_readparms.F) and no longer requires to include ${PKG}_PARMS.h):
1315        rename param turnFreeDriftInAdMode to SEAICEuseFREEDRIFTswitchInAd
1316        and change param SEAICEuseDYNAMICSinAdMode to SEAICEuseDYNAMICSswitchInAd.
1317    o pkg/obcs:
1318      - adding tidal velocity forcing capability to obcs
1319        for usage example, see verification/seaice_obcs/input.tides
1320    o pkg/seaice:
1321      - turn the LSR-relaxation parameters WFAU/V into runtime parameters
1322        SEAICE_LSRrelaxU/V
1323      - introduce runtime parameter SEAICEetaZmethod (=0 by default)
1324    o pkg/aim_v23:
1325      - implement heating from friction (bottom friction and stratospheric drag).
1326    o pkg/shap_filt:
1327      - fix diagnostic "SHAP_dKE" (was 2 time smaller); implement heating from
1328        dissipation but only for Shap_funct=2, active when addFrictionHeating=T.
1329    o model/src:
1330      - move AddMass common block from DYNVARS.h to FFIELDS.h; allow to read-in
1331        time-constant addMass field from file (addMassFile);
1332      - support for heating due to friction (and Kinetic Energy dissipation):
1333        add option, run-time switch and 3-D field array + support code ; each pkg
1334        or S/R can add heating contribution (if there is a sink of KE); the sum is
1335        accounted for as a Temperature tendency term (EXTERNAL_FORCING_T).
1336    o pkg/seaice:
1337      - complete merge of ITD code into seaice_growth.F
1338        from MITgcm_contrib/torge/itd/code/
1339        no verification so far, but Torge Martin tested
1340        "1-D test case and Beaufort set up;
1341        deliver okay results after 1 model year."
1342      - complete merge of SEAICE_SIZE.h into all relevant routines
1343      - move computation of eta at Z-points into calc_viscosities
1344        + introduce global field etaZ
1345        + add different methods for computing etaZ, for now the old
1346          method (simple averages of eta to Z-points) is hardwired
1347        + replace etaMeanZ by etaZ in seaice_lsr, seaice_calc_residual,
1348          seaice_preconditioner
1349      - simplify computations for SEAICE_ZETA_SMOOTHREG
1350      - seaice_preconditioner:
1351        + replace one remaining press by pressLoc (mistake)
1352        + adjust printing of residuals
1353      - improve I/O of diagnostics of JFNK in seaice_jfnk.F:
1354        + add (SEAICE.h) and rename some counters (initiliased in
1355          seaice_init_fixed.F)
1356        + add _BEGIN/END_MASTER (myThid)  around print statements
1357        + print total number of iterations and failures over SEAICE_monFreq
1358          interval to STDOUT
1359      - move control over output-messages by fgmres to seaice_jfnk to save
1360        some operations
1361      - move resetting initial guess for fgmres outside of seaice_fgmres_driver
1362        in order to make restarts with sol .ne. zero (fgmres with restarts)
1363        (seaice_jfnk.F, seaice_fgmres.F)
1364      - seaice_calc_l/rhs.F: replace maskW/S by maskInW/S; this fixes
1365        a serious convergence problem when open boundaries are involved
1366    o pkg/ggl90: fix computation of control volumes for the case of
1367      ALLOW_GGL90_HORIZDIFF (probably not used very often): move control volumes
1368      up half a grid cell from C-centered to W-centered (pointed out by C. Eden)
1369    o pkg/seaice: simplify seaice_evp by avoiding use of extra fields u/vIceC
1370    o pkg/autodiff
1371      - Add inAdMode switch for SEAICEuseDYNAMICS:
1372        SEAICEuseDYNAMICSinAdMode
1373        (extend logic in ADAUTODIFF_INADMODE_SET)
1374    o pkg/seaice
1375      - Step 1 of merging ice-thickness distribution (ITD) code from
1376        MITgcm_contrib/torge/itd/ (author: Torge Martin)
1377        The code implements concept laid out in Thorndike et al. (1975);
1378        code is enabled via CPP flag SEAICE_ITD
1379        nITD (in SEAICE_SIZE.h) defines number of ice thickness categories;
1380        code is not complete yet!!
1381      - SEAICE_SIZE.h now included in almost all seaice routines
1382    o verification (using seaice):
1383      - switch back seaice-dynamics (+ lower SOLV_MAX_ITERS) in ADM exp.
1384        global_ocean.cs32x15.seaice ; update results.
1385      - compile B-grid dynamics in FW test exp 1D_ocean_ice_column ;
1386      - compile C-grid dynamics with #define SEAICE_ALLOW_JFNK in FW test exp
1387        offline_exf_seaice (previously compiling B-grid).
1388    o pkg/exf:
1389      - fix some STOP conditions in exf_check.F (from Aug 28, modifs did not allow
1390        to specify neither just 1 comp of wind or wind-stress, nor no surface momentum
1391        forcing): just replace CPP option ALLOW_ATM_WIND with run-time param useAtmWind.
1392    o pkg/layers (adjust changes from Sept 19):
1393      - do snap-shot output and fill diagnostics from inside iLa loop (layers_calc.F)
1394        this allows to remove "layers_maxNum" dimension from all layers arrays.
1395    o pkg/layers (adjust changes from Sept 19):
1396      - remove ALLOW_LAYERS_OUTPUT ; fix snap-shot and time-ave output ;
1397      - snap-shot extended to all type of layers (not just the 1rst type);
1398      - remove layers variables when corresponding CPP option is undef.
1399    o pkg/layers:
1400      - rename pkg/layers variable and add new output (layer exist & un-weighted
1401        velocity in layer)
1402    o pkg/seaice:
1403      - simplify (?) ocean-drag coefficent computations by using
1404        the same routine in all three solvers (saves some code lines)
1405      - remove global fields DRAGA and DRAGS from C-grid code and
1406        declare them locally in lsr.F (the only place where they are
1407        still used)
1408      - update AD output of lab_sea.evp (very sensitive anyway).
1409    o pkg/seaice: add Jacobian-free Newton Krylov solver for ice dynamics
1410      (Lemieux et al. 2010, 2012). Turn on with the usual SEAICE_ALLOW_JFNK
1411      and SEAICEuseJFNK=.true. A few things to note:
1412      - involves a FGMRES, that is parallel but very inefficient,
1413        because of many scalar products (global sums) in the Gram-Schmidt
1414        orthogonalization method. Needs to be replaced. Original code
1415        from J.-F. Lemieux
1416      - preconditioner for FGMRES is a stripped down version of LSOR
1417      - SOLV_MAX_ITERS is now used for LSOR as a solver and as a
1418        preconditioner. For the preconditioner, the default is set to 10.
1419      - Jacobian times vector is computed with finite differences
1420      - marginally related to JFNK-solver: add a smooth regularization for
1421        zeta with tanh that will improve convergence (Lemieux and Tremblay,
1422        2009) for any implicit solver (not implemented for EVP because EVP
1423        does not need this regularization in the first place). Define
1424        SEAICE_ZETA_SMOOTHREG in SEAICE_OPTIONS.h to use.
1425    o eesupp/src:
1426      - check in genmake2 that intrinsic S/R flush is available.
1427      - add S/R to flush IO unit (if intrinsic S/R flush is available)
1428      - flush standard & error msg unit before MPI termination
1429      - if debugMode, flush IO unit after printing msg
1430    o pkg/ctrl:
1431      - ctrl_unpack.F, ALLOW_GENARR3D_CONTROL code: fix missing argument in call
1432        to ctrl_set_unpack_xyz.
1433    
1434    checkpoint64 (2012/10/09)
1435    o pkg/shelfice
1436      - in mom_fluxform.F, mom_vecinv.F:
1437        CALL SHELFICE_V_DRAG(bi,bj,k,vFld,KE,KappaRU,vF,myThid)
1438        Bug fix KappaRU -> KappaRV
1439        does not change verification/isomip but may change other setups
1440        (presumably constant KappaRU=KappaRV)
1441      - fix diagnostics SHIU/Vdrag (thanks to Tom Millgate)
1442    o pkg/obcs:
1443      - fixed some indexing bugs in obcs_seaice_sponge.F
1444      - added obcs relaxation subroutines for HSALT and HSNOW
1445      - changes verification/seaice_obcs/results/obcs_seaice_sponge.F
1446    o pkg/seaice:
1447      - add "multicategory" parameterization for snow in analogy to ice,
1448        default is off for now.
1449    o pkg/obcs:
1450      - added obcs_seaice_sponge.F for obcs relaxation of seaice variables;
1451        see verification/seaice_obcs/input.seaiceSponge for example application.
1452      - remove local commom bloc "OBCS_GLOBAL" in obcs_readparms.F and do all the OB
1453        index setting by master-thread. This fix multi-threads Pb in previous modifs.
1454    o pkg/layers :
1455      - add diagnostics to pkg/layers
1456      - move the meat of pkg/layers from layers_calc.F to layers_fluxcalc.F
1457        (from R.Tulloch). Layers_calc.F now calls layers_fluxcalc.F accordingly.
1458    o pkg/generic_advdiff/gad_implicit_r.F :
1459      - fix ADVr diagnostics in case of both implicit vertical advection and diffusion.
1460    o pkg/seaice/seaice_growth.F:
1461      - fix SItflux diagnostics in virtual salt flux + balanceEmpmr case.
1462    o pkg/obcs:
1463      - change default setting of OBCS_UVICE_OLD from defined to undef;
1464      - use new parameter OB_indexNone for null index value (instead of hard-coded 0)
1465        in all pkg/obcs code and in other pkgs; remove k loop in obcs_check_depths.F;
1466      - pass OB_indexNone as (new) argument to S/R CTRL_MASK_SET_[X,Y]Z;
1467      - change OB null index value (OB_indexNone) to -99 ; this fix the problem
1468        with Southern & Western OB at a tile edge (at least in a simple set-up).
1469    o pkg/obcs:
1470      - change settings of OB index in case OB coincides with tile edge (shared by
1471        2 tiles), so that common OB location is registered by both tiles (instead of
1472        only 1). However, for Southern and Western OB, index value = 0 is not
1473        recognized as valid OB index (=default null value) and needs to be fixed.
1474      - modify accordingly OBCS_BALANCE_FLOW and OBCS_MONITOR (avoid double counting)
1475      - new parameter "OB_indexNone" for null index value (for now, still zero)
1476        to replace hard-coded null index value of zero.
1477    o pkg/exch2:
1478      - improve W2_USE_E2_SAFEMODE (faster) and W2_E2_DEBUG_ON:
1479        always check buffer-size (but outside the loop); move checking for valid
1480        index from W2_USE_E2_SAFEMODE to W2_E2_DEBUG_ON; in W2_E2_DEBUG_ON,
1481        print each tile and point connection only if |W2_printMsg|>= 2 and 3.
1482    o pkg/ctrl (pack & unpack):
1483      - in ctrl_pack.F & ctrl_unpack.F, use the same local file-name variable
1484        (locally defined) for different variables (+ remove the variable-specific
1485        file name in CTRL_GENARR.h). For now, only implemented for GENARR2/3D_CONTROL
1486        (to be extended to other local file names in ctrl.h).
1487    o pkg/flt:
1488      - add a FLT_Iter0 option (similar to PTRACERS_Iter0).
1489    o pkg/mdsio:
1490      - fix missing STOP in mdsio_readvec_loc.F (case ioUnit=0) when file is missing
1491    o tools/genmake2:
1492      - add similar dependences for target EXE_AD & EXE_FTL as we have for EXECUTABLE
1493        (added by Alistair in version 1.51 for building without make depend);
1494      - remove Header files list (H_SRC_FILES) from the dependence of targets
1495         ad_input_code.f & ftl_input_code.f (not clear why it was added in the first
1496        place in version 1.23): this save going through staf when unrelated header
1497        file has been modified.
1498       Note: for an intermediate target (e.g., ad_input_code.f or adtaf) without
1499        "make depend" step, still need to do "make links" before "make adtaf".
1500    o eesupp/src (+ few pkg src files) & genmake2:
1501      - finish to remove ALWAYS_USE_MPI in source code that TAF does not see;
1502      - no longer set ALWAYS_USE_MPI in Makefile (was done by genmake2).
1503      - improve genmake2 checking for ALLOW_${PKG} in CPP_OPTIONS.h files (distinguish
1504         upper/lower case ; account for space between "#" and undef/define)
1505    o pkg/flt (with exch2):
1506      - cleaning: fix so that it compiles; move remaining MPI calls out of flt_exch2.F;
1507      - simplify threads synchronisation; fix (many issues) multi-threaded with MPI.
1508    
1509    checkpoint63s (2012/09/05)
1510    o pkg/ecco:
1511      - remove #ifdef ALLOW_SMOOTH_CORREL3D brackets.
1512      - add more relevant #ifdef ALLOW_SMOOTH ones.
1513      - sort out useAtmWind, useSMOOTH, ctrlSmoothCorrel2D.
1514    o pkg/ctrl:
1515      - CTRL_OPTIONS.h : document CPPs related to smoothing; ALLOW_SMOOTH_CORREL2D/3D,
1516        ALLOW_CTRL_SMOOTH, ALLOW_SMOOTH_CTRL2D, ALLOW_SMOOTH_CTRL3D.
1517      - ctrl.h : document run time params doInitXX, doMainPack, doMainUnpack, doPackDiag,
1518        doSinglePrecTapelev (audodiff param!), ctrlSmoothCorrel2D (new) and
1519        ctrlSmoothCorrel3D (new).
1520        The added ctrlSmoothCorrel2D/3D replace the old ALLOW_SMOOTH_CORREL2D/3D CPP.
1521      - ctrl_readparms.F : initialise ctrlSmoothCorrel2D/3D and read from namelist.
1522      - ctrl_init.F ctrl_pack.F ctrl_unpack.F : switch off ustress/vstress
1523        controls when useAtmWind, and vice versa.
1524      - ctrl_map_ini_ecco.F : UVEL0, VVEL0, edtaux, edtauy cannot be smoothed as tracers.
1525      - ctrl_get_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL2D with
1526          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel2D, IF useSMOOTH.
1527      - ctrl_map_ini_gen.F : replace #ifdef ALLOW_SMOOTH_CORREL3D with
1528          #ifdef ALLOW_SMOOTH, IF ctrlSmoothCorrel3D, IF useSMOOTH.
1529      - ctrl_set_pack_xy[z].F, ctrl_set_unpack_xy[z].F:
1530        replace ALLOW_SMOOTH_CORREL2D/3D brackets with ctrlSmoothCorrel2D/3D.
1531    o pkg/smooth:
1532      - remove un-necessary includes.
1533      - remove ALLOW_SMOOTH*D and ALLOW_SMOOTH_CORREL*D brakets.
1534        Those CPP options were never defined, and not necessary.
1535    o model/src:
1536      - fix CPP brackets in ini_mixing.F (GM_background_K belongs to gmredi).
1537      - standard treatment of useSMOOTH.
1538    o pkg/autodiff:
1539      - add LOGICAL useGGL90inAdMode, useGGL90inFwdMode, useSALT_PLUMEinAdMode,
1540        useSALT_PLUMEInFwdMode allowing to switch off ggl90 and salt_plume adjoint.
1541    o pkg/exch2:
1542      - add "if usingMPI" where it was missing (in exch2_rx?_cube*.template)
1543        + start to remove ALWAYS_USE_MPI in source code that TAF does not see.
1544      - make new S/R W2_MAP_PROCS out of w2_eeboot.F to setup exch2 CommonFlag
1545        and tiles to process mapping.
1546      - re-arrange 3 header files (W2_EXCH2_PARAMS.h, _BUFFER.h & _TOPOLOGY.h)
1547        moving /EXCH2_FILLVAL_RX/ & /W2_EXCH2_COMMFLAG/ to W2_EXCH2_TOPOLOGY.h;
1548        rename "exch2_tProc" to "W2_tileProc" and move seting of e2FillValue_RX
1549        from w2_eeboot.F to w2_readparms.F.
1550    o eesupp/src:
1551      - set exchNeedsMemsync & exchUsesBarrier according to "usingMPI" (instead of
1552        ALWAYS_USE_MPI) + moved from ini_communication_patterns.F to eeset_parms.F;
1553        also move setting of exchCollectStatistics from exch_init.F to eeset_parms.F
1554      - in eedie.F and all_proc_die.F, always call MPI_FINALIZE when ALLOW_USE_MPI
1555        is defined (remove condition on usingMPI) to match cases where MPI_INIT
1556        has been called.
1557      - fix bug I put in previous modif of exch_sm_3d_rx.template (not much used);
1558      - change default (non-MPI) value of myPid (from 1 to 0) to match MPI settings
1559        (so that on 1 proc, get same myPid independently of usingMPI)
1560      - add a stop if multi-procs but usingMPI=F ; stop also if usingMPI=T and
1561        useCubedSphereExchange with EXCH-1 (safer).
1562      - add "if usingMPI" where it was missing (+ start to remove ALWAYS_USE_MPI).
1563    o pkg/ggl90:
1564      - fix bug in filling corner mask array "mskCor" (FILL_CS_CORNER_TR_RL call)
1565        used in ALLOW_GGL90_SMOOTH code.
1566    o pkg/flt:
1567      - fix typo in FLT_WITHOUT_Y_PERIODICITY (the effect was to ignore stopping
1568        floats at the Southern end of the domain).
1569    o eesupp/inc:
1570      - add a list of CPP-options which can be set by Makefile (DEF_IN_MAKEFILE.h);
1571        but not used (and not to be used) anywhere, just for documentation.
1572    o pkg/autodiff, exf, ptracers & seaice (AD & TL output):
1573      - comment out the very nasty "writeBinaryPrec = writeStatePrec" line, since:
1574        a) can damage previously written records in any other multi-record files.
1575        b) if needed, can easily do it cleanly, by calling S/R WRITE_REC_3D_RL/S.
1576    o tools/genmake2:
1577      - define variable MAKE within Makefile and use it in place of 'make';
1578      - update AD_CONFIG.h (if needed) before building any of the executable
1579        (forward, adjoint or tangent-lin); this involves a 2nd invocation of make;
1580        and add the usual #ifndef/#define AD_CONFIG_H in AD_CONFIG.h;
1581      - always print usual warning comment 'this file is automatically generated'
1582        from script convert_cpp_cmd2defines (+ remove this warning from genmake2).
1583    o pkg/cheapaml:
1584      - updated to correspond to the code used in accepted paper (Nico Wienders).
1585    o pkg/exf:
1586        added run time switch useAtmWind to replace ALLOW_ATM_WIND cpp switch.
1587        ALLOW_ATM_WIND now just sets the useAtmWind default (see exf_readparms.F)
1588        and force defines ALLOW_BULKFORMULAE (EXF_OPTIONS.h).
1589    o pkg/exf, autodiff, ctrl, ecco and seaice:
1590        remove ALLOW_ATM_WIND brackets, or replace them with useAtmWind ones.
1591    o pkg/ctrl, ecco:
1592        allow to compile both ALLOW_U/VSTRESS_CONTROL and ALLOW_U/VWIND_CONTROL.
1593        Depending on useAtmWind, one is inactive, and the other is active (see
1594        exf_getffields.F/exf_getsurfacefluxes.F).
1595    o tools/genmake2:
1596      - improve error msg when failing in 2nd test of check_for_broken_Ff
1597      - fix option '-makefile' short-name (-mf according to genmake2 -help)
1598      - source local config file "genmake_local" just after processing the genmake2
1599        command arguments (previously done before processing arg).
1600    o pkg/grdchk:
1601      - add a call to TURNOFF_MODEL_IO for Tangent-Linear run (in this case, call
1602        to this routine from cost_final has been dropped in g_cost_final)
1603      - improve printed information (more explicit msg, no longer using "print *,"
1604         fix fcpertminus printed value).
1605    o model/src:
1606      - move call to COST_INIT_VARIA out of packages_init_variables.F directly
1607        into initialise_varia.F (just after calling PACKAGES_INIT_VARIABLES):
1608        this prevents getting cost-funct reset in adinitialise_varia recomputations.
1609    o pkg/dic:
1610      - move initialisation of "freefe" array from from dic_biotic_forcing.F to
1611        fe_chem.F: this prevents TAF from dropping this initialisation in TLM code.
1612    o pkg/grdchk:
1613      - grdchk_main.F : added CALL GLOBAL_SUM_INT( ierr , myThid )
1614      - grdchk_getadxx.F etc. : omit I/O if ierr.EQ.0
1615    o pkg/autodiff/ctrl/grdchk :
1616      - attempt to sort out what works and what does not,
1617        with regard to I/O, and to warn/stop accordingly.
1618    o pkg/grdchk:
1619      - attempt to fix grdchk in the case of useSingleCpuIO.
1620      - "if ( myProcId .EQ. grdchkwhichproc .AND. ierr .EQ. 0 )"
1621       statements were moved from grdchk_main.F and into
1622       grdchk_getadxx.F grdchk_getxx.F grdchk_setxx.F.
1623      - a global sum is applied to record numbers icvrec/layer
1624       out of grdchk_loc so that they be passed to I/O routines.
1625    o pkg/smooth:
1626      - fix recomputation that appeared with nlfs : use smooth_recip_hFacC,
1627        smooth_hFacW, smooth_hFacS (copied at init_fixed) in 3d case.
1628    o verification/testreport:
1629      - add option '-tlm' for Tangent-Linear test (-adm,-oad,-tlm are all exclusive);
1630      - can also use compressed (gzip) reference output file;
1631      - change format (in pkg/grdchk) of TLM output (+ add forward gradient)
1632        to be easier to collect by testreport.
1633      - update existing TLM output (half out-of-date by more than 3 yrs).
1634      - report NETCDF & LAPACK settings (from genmake2) in output dir.
1635      - report run-time in each individual summary (previously only for AD test);
1636        for TLM test, add also TAF version.
1637      - add daily TLM test on (old) aces cluster + weekly test on baudelaire.
1638    
1639    checkpoint63r (2012/08/15)
1640    o tools/genmake2:
1641      - fix Makefile for target ftlall (+ update files to clean after make ftlall)
1642    o pkg/ecco/ecco_cost_final.F :
1643      - fix fc print statements (to stdout and costfunction0000) so
1644        that the printed value is always after the global sum.
1645    o pkg/seaice/seaice_dynsolver.F :
1646      - fix ice strength assymptote at SEAICE_area_max<1
1647        (no change for the standard case of SEAICE_area_max=1)
1648    o some cleaning:
1649      - pkg source files: ensure that all *.F files from each pkg included the
1650        corresponding ${PKG}_OPTIONS.h file (except stand-alone src file which
1651        only includes CPP_EEOPTIONS.h); fix S/R CTRL_SMOOTH ; update AD experiment
1652        code_ad/*.F src files; add new option-file in pkg/admtlm + corresponding
1653        includes;
1654      - model/src: add PACKAGES_CONFIG.h wherever ALLOW_AUTODIFF[_TAMC] is used.
1655      - ALLOW_DIFFKR_CONTROL: add a stop in S/R CTRL_CHECK in case ALLOW_3D_DIFFKR
1656        is undef; also define /DYNVARS_DIFFKR/ common block in DYNVARS.h when
1657        ALLOW_DIFFKR_CONTROL is defined, to allow to compile and reach this stop.
1658      - update option-file CPP_OPTIONS.h of all AD experiments:
1659        * no longer include PACKAGES_CONFIG.h ;
1660        * includes ECCO_CPPOPTIONS.h if PACKAGES_CONFIG.h has been included ;
1661        * def/undef ALLOW_3D_DIFFKR independently of ALLOW_DIFFKR_CONTROL (before
1662          including ECCO_CPPOPTIONS.h).
1663    o pkg/cost, pkg/ctrl, pkg/ecco option-file:
1664      - clean-up and split content of old pkg/ecco/ECCO_CPPOPTIONS.h file into
1665        separated pkg option-file (done according to old doc from ECCO_CPPOPTIONS.h,
1666        not necessary accurate).
1667      - add a template for option-file ECCO_CPPOPTIONS.h, mostly empty, in
1668        pkg/autodiff, i.e., the 1rst pkg to compile for adjoint built, with lines to
1669        deliberately break compilation (a remainder that it needs to be customized)
1670      - in pkg/ecco, includes ECCO_OPTIONS.h instead of COST_OPTIONS.h
1671      - rename COST_CPPOPTIONS.h to COST_OPTIONS.h
1672      - rename CTRL_CPPOPTIONS.h to CTRL_OPTIONS.h
1673    o tools/genamke2:
1674      - check for lapack.
1675    o pkg/cost and pkg/ecco : attempt to sort out some of the limiting intricacies.
1676      - pkg/cost.cost_final.F : allow for use of pkg/ecco and pkg/cost cost functions
1677        jointly. The exclusive ifdefs were removed, to add costs terms (when defined)
1678        from both packages.
1679      - the fc global sum in pkg/ecco/ecco_cost_final.F was removed accordingly.
1680      - for objf_atl we use either the pkg/ecco or the pkg/cost term depending on CPPs.
1681      - pkg/ecco and model/src : add CPP brackets around pkg/cost and pkg/ctrl includes
1682        of "CTRL_SIZE.h" "ctrl.h" "ctrl_dummy.h" "optim.h" / "cost.h" accordingly.
1683    o pkg/cost : add comments to explain special and/or untested setups.
1684    o pkg/exf:
1685      - use EXF_OPTIONS.h to set pkg/exf options except if done in ECCO_CPPOPTIONS.h
1686        (previously, ALLOW_AUTODIFF_TAMC was controling this switch).
1687    o verification/*/code_ad:
1688      mimimal cleaning of AD experiments ECCO_CPPOPTIONS.h option-file:
1689      - reccord when this file is included (define ECCO_CPPOPTIONS_H)
1690      - remove the most obvious obsolete features (e.g., #define ALLOW_COST not
1691        allowed since Oct 2003 in any option-file except in PACKAGES_CONFIG.h)
1692    o pkg/seaice :
1693      - added possibility to change ice strength/PRESS0 relationship to
1694        HEFF, according to the following run time parameters
1695        SEAICEpresPow0 :: HEFF exponent for ice strength below SEAICEpresH0 (integer, >0)
1696        SEAICEpresPow1 :: HEFF exponent for ice strength above SEAICEpresH0 (integer, >0)
1697        SEAICEpresH0   :: HEFF threshold for ice strength            (m)
1698    o pkg/ggl90 :
1699      - added run time flag mxlSurfFlag to include the code that ensure
1700        mixing between first and second level (previously included as a comment)
1701    o verification/1D_ocean_ice_column/input_ad/data.autodiff :
1702      - add test of newly added dumpAdByRec=T option where
1703        we write all records to one file per variable.
1704    o verification/global_ocean.cs32x15/code_ad/CPP_OPTIONS.h :
1705      - switch to #define ALLOW_BALANCE_RELAX and ALLOW_BALANCE_FLUXES
1706        to check that this code is ok with taf and compiles in adjoint.
1707    o pkg/autodiff :
1708      - added run time param dumpAdByRec : ad dump format switch.
1709        If true then write all records to one file per variable.
1710        Else write one file per record (remains the default).
1711      - revise seaice_ad_dump.F and exf_adjoint_snapshots_ad.F accordingly.
1712    o pkg/seaice:
1713     - Added SEAICEuseTILT run time switch : if set to
1714       false then omit the tilt term in seaice dynamics.
1715     - Fix free drift calculation.
1716    o pkg/shelfice:
1717      When initializing SHELFICEDragQuadratic, set default to be
1718      consistent with shiCdrag in case SHELFICEuseGammaFrict is used,
1719      but retain option to set it independently
1720      (inconsistenty spotted by Veronique Dansereau)
1721    o eesupp/inc:
1722      - in EEPARAMS.h, add real-type constant for some frequently used simple number
1723         (0,1,2,1/2), with name explicitly referring to RS/RL type.
1724    o model/src:
1725      - move balancing of relaxation terms to new S/R balance_relax.F.
1726    o pkg/autodiff:
1727      re-write active I/O high-level (control) S/R:
1728      - rename  S/R ACTIVE_READ/WRITE_RL to ACTIVE_READ/WRITE_3D_RL
1729      - add 1 more argument (useCurrentDir) to replace the "_LOC" 2nd set of S/R.
1730      - use standard pkg/mdsio I/O routines (MDS_READ/WRITE_SEC_XZ/YZ  and
1731        MDS_READ/WRITE_FIELD); change loops to multi-threads.
1732      - update and merge active_file_control_slice.flow into active_file_control.flow
1733      - update the calls in lower level S/R (active_file.F, active_file_g.F and
1734        active_file_ad.F) keeping the argument list and function unchanged.
1735      - also update lower-level "_LOC" version (call same S/R with "useCurrentDir
1736        =.TRUE.") and remove high-level (control) _loc version (not called anymore).
1737      - new low-level active I/O routines, one for each type (RL/RS), for active var
1738        of various (XY,XZ,YZ) shape and level number (arguments: arrShape, myNr);
1739        fix ctrl_init_wet.F & ecco_cost_weights.F by calling the new S/R with the
1740        right type.
1741    o autodiff and RS=real*4:
1742      - call the right type (_RS instead of _RL) of S/R in few output S/R (pkg/exf
1743        ad-monitor and snapshots); disable arrType='RS' in mdsio_gl*.F ;
1744      - change argument type of 3-D mask argument to _RS to match type in the call
1745        (in seaice_cost*.F, ctrl_*_gen.F and *ctrl_bound.F); to be continued.
1746    o pkg/thsice:
1747      - re-anable balanceEmPmR when useSEAICE=T with useThSIce=T.
1748      - option to correct ocean fresh-water flux for imbalance of Atmos+Land
1749        fresh-water flux: uniform correction or proportional to local precip.
1750    o pkg/ctrl:
1751      - new header file CTRL_SIZE.h for parameters maxCtrlArr2D, maxCtrlArr3D
1752      - redefine CPP option ALLOW_BOTTOMDRAG_CONTROL to
1753                            ALLOW_BOTTOMDRAG_CONTROL_NONGENERIC
1754      - verification/hs94.1x64x5/ tests ALLOW_GENARR{2D,3D}_CONTROL
1755    
1756    checkpoint63q (2012/07/30)
1757    o pkg/autodiff:
1758      note about monitor and snap-shot of ad-variables:
1759      a) need to apply ADEXCH before monitor or output of ad-vars to include
1760       overlap contributions (was done for adjDump but missing for monitor).
1761      b) since ADEXCH implies adding overlap values to interior array, machine
1762       truncation error is expected when adding an ADEXCH call in the middle of
1763       the time-stepping (although mathematically identical).
1764      modifs:
1765      - fix some incorrect type (RL/RS, UV/scalar) in ADEXCH calls and ad-vars
1766        declaration (adEddyPsiX,adEddyPsiY in adcommon.h).
1767      - add new run-time params (dumpAdVarExch & mon_AdVarExch) to select how  to
1768        apply ADEXCH before monitor or snap-shot of ad-variables:
1769           =0 : no ADEXCH ; =1 : do ADEXCH ; =2 : apply ADEXCH on a local copy.
1770      - implement new method (copy+adexch) for snap-shot and monitor of main model
1771        ad-vars (initially not used by default -> output unchanged).
1772      - change default (set to 2) to use new method and update few output_adm.txt
1773        with accurate ad-monitor (global_ocean.90x40x15, tutorial_global_oce_biogeo
1774        and both tutorial_tracer_adjsens tests).
1775      - switch 2 global_ocean.cs32x15 AD-tests to AB-2 (seaice_dynmix & thsice)
1776        and turn off momDissip_In_AB in the 2 other (needed for stable AB-3).
1777    o pkg/ctrl:
1778      enable the use of a variable number (maxCtrlArr2D, maxCtrlArr3D) of
1779      generic control variables via
1780      #define ALLOW_GENARR2D_CONTROL and/or #define ALLOW_GENARR3D_CONTROL
1781      Only required customization should be S/R ctrl_map_ini_genarr.F
1782      (routine in repository contains example)
1783    o pkg/exf:
1784      - fix and refine checking of surface-relaxation setting when using EXF
1785    o verification (adjoint exp):
1786      - reduce length of simulation by half for experiment global_ocean.cs32x15
1787        (std, seaice & seaice_dynmix) and exp tutorial_dic_adjoffline; update output.
1788    o pkg/mom_common (mom_u/v_bottomdrag), pkg/shelfice (shelfice_u/v_drag)
1789      - replace if statements KE.ne.0 with KE.gt.0 to avoid sqrt of negative numbers
1790        of KE that can occur with aggressive optimization
1791      + put quadratic bottom drag calculation in separated loops (only done if
1792        using bottomDragQuadratic)
1793    o model/src: CG2D_NSA
1794      - clean-up:  stop if cg2dNormaliseRHS=T and AUTODIFF
1795         and replace GLOBAL_SUM calls with GLOBAL_SUM_TILE.
1796      - in test-exp that uses CG2D_NSA (bottom_ctrl & tutorial_tracer_adjsens),
1797         change cg2d residual target to be expressed in Wunits (=> do not normalise
1798         RHS ; this fix global_max Pb with TAF); update output.
1799    o verification/tutorial_tracer_adjsens:
1800       improve parameter consistency (and get rid of warnings):
1801       - use deltaTFreeSurf=deltaTtracer (better with NonLin FreeSurf);
1802       - switch Temp Adv Scheme from 81 to 80 (no limiter since theta < 0 is physical)
1803       - use staggerTimeStep (for stability) in som81; use default rotation period.
1804    o pkg/exch2:
1805      - with empty facet: fix compact-format (W2_mapIO=1) definition (was previously
1806        reset to 0 = 1 long line in X)
1807    o pkg/mdsio:
1808      - fix reading of dimensions from meta file for large-size domain
1809    o model/src:
1810      - fix saltIsActiveTr setting for IdealGas eosType (eosType is 6 character long);
1811      - to refine CS-grid check, add logical flag "hasWetCSCorners": true if using
1812        Cubed-Sphere Exch with CS-corners inside the domain;
1813        make new S/R INI_GLOBAL_DOMAIN from code in ini_linear_phisurf.F to calculate
1814        globalArea and to set hasWetCSCorners.
1815      - add warning if usingCurvilinearGrid and momAdvection in flux-form (missing
1816        metric terms); stop if hasWetCSCorners=T and momAdvection in flux-form.
1817      - re-activate the stop if useCDscheme and hasWetCSCorners=T (previously if
1818        useCDscheme and useCubedSphereExchange).
1819    o pkg/seaice/seaice_growth.F :
1820      - compute the SEAICE_DISABLE_HEATCONSFIX term accordingly
1821        for the (.NOT.useRealFreshWaterFlux).OR.(nonlinFreeSurf.EQ.0)
1822        when the previous code was not correct.
1823      - in all cases diagnoze the boundary condition mismatch to SIaaflux
1824      - in the case of useRealFreshWaterFlux.AND.(nonlinFreeSurf.GT.0) add
1825        that term to QNET (essentially to set the melt/freeze water to 0degC).
1826        when SEAICEheatConsFix is true, so that the ocean+ice budget heat is closed.
1827    o verification/global_ocean.cs32x15/input.seaice :
1828      - add SEAICEheatConsFix in data.seaice, ensuring closed ocean+ice heat budget.
1829      - add diagnostics (commented out) for budget test using my matlab codes (gcmfaces).
1830      - update results (output.seaice.txt) accordingly.
1831    o verification/lab_sea/input/data.seaice :
1832      - remove SEAICEheatConsFix, which is now be tested
1833        in global_ocean.cs32x15. The presently coded fix
1834        is only consistent with real fresh water + nlfs.
1835      - update results (output.txt) accordingly.
1836    o pkg/salt_plume: added diagnotic for salt tendency (oceSPtnd).
1837    o AD_CONFIG.h file:
1838      - in genmake2: remove "#undef ALLOW_ECCO_OPTIMIZATION" from AD_CONFIG.h;
1839      - remove #include "AD_CONFIG.h" from all included OPTIONS files and
1840        add it explicitly in each fortran src file where it is needed.
1841        motivation: header file AD_CONFIG.h is generated/modified after "make depend"
1842        thus introducing potentially wrong dependency; therefore, better to include
1843        it only where it's really needed, and after any other included OPTIONS file
1844        (less tempting to bring conditional includes according to ALLOW_ADJOINT_RUN
1845        or ALLOW_TANGENTLINEAR_RUN).
1846    
1847    checkpoint63p (2012/07/06)
1848    o pkg/autodiff:
1849      - rename S/R INI_AUTODIFF to AUTODIFF_INIT_VARIA ;
1850      - create new header file "AUTODIFF_PARAMS.h" for pkg/autodiff parameters
1851        which are now read from new parameter file "data.autodiff" (inAdExact
1852        previously in "data", use{KPP/GMRedi/SEAICE}inAdMode previously in data.pkg)
1853      - add file "data.autodiff" in all verification/*/input_ad/ directories.
1854      - add run-time parameter to turn On/Off SEAICEuseFREEDRIFT in adjoint/forward
1855        mode (used in global_ocean.cs32x15.seaice_dynmix test exp.)
1856    o verification/tutorial_tracer_adjsens/
1857      - add extra sub-verification which uses "SOM" advection scheme
1858        (2nd Order-Moment Advection Scheme, Prather Limiter) with
1859          #define GAD_ALLOW_TS_SOM_ADV in GAD_OPTIONS.h
1860        and in data:
1861          multiDimAdvection=.TRUE.,
1862          tempAdvScheme=81,
1863          saltAdvScheme=81,
1864    o model/src:
1865      - introduce ALLOW_BALANCE_RELAX which allow the removal
1866       of the global mean of relaxation terms by setting
1867       balanceThetaClimRelax and balanceSaltClimRelax
1868      - disable balanceEmPmR and balanceQnet in the case when useSeaice.
1869       This case is now treated appropriately in seaice_growth.F
1870    o pkg/seaice:
1871      - do balanceEmPmR and balanceQnet based on the net fluxes
1872        (SItflux) that enter the ocean+ice system rather than QNET
1873        and EMPMR. Works best in real fresh water.
1874      - SIatmFW, SIatmQnet, and SItflux computations had to be moved
1875        out of the diagnotics bloc, and stored in global arrays.
1876    
1877    checkpoint63o (2012/06/29)
1878    o vertical mixing schemes:
1879      - remove unused S/R CALC_BUOYANCY (left from branch-atmos merging)
1880      - replace computation of density (in Function STATE1, opps_calc.F) by a call
1881        to S/R FIND_RHO_SCALAR
1882      - pass sigmaR to S/R PP81_CALC, MY82_CALC (but not yet used) and to GGL90_CALC
1883        and use it for N^2 calculation in ggl90_calc.F (save 2 density computations);
1884        affects output (vermix.ggl90) at truncation level.
1885    o testreport:
1886      - change adjustment of SIZE.h for mpi+mth testing: preserve enough tiles
1887        (nSx,nSy) for the number of threads (from eedata.mth)
1888    o model/src:
1889      - remove 2nd set of calls at the top of initialise_varia.F (Adjoint part)
1890        related to Non_Lin Free-Surf or Bottom-Control (but not longer necessary).
1891    o verification/tutorial_tracer_adjsens/
1892      - compile with ALLOW_CG2D_NSA
1893      - run with nonlinFreeSurf=3
1894      - update reference output_adm.txt
1895    o tools/genmake2:
1896      - add "-DHAVE_NETCDF" to the DEFINES list when NetCDF is available ;
1897        refine usePROFILES switching off (only when NetCDF is not available).
1898    o verification (atmospheric set-up):
1899      - change eosType='IDEALGAS' to eosType='IDEALG' to match variable declaration
1900    o pkg/profiles : refine profiles and files handling.
1901    o model/src and pkg/ecco : introduce run-time switch usePROFILES.
1902    o model/src/the_main_loop.F, forward_step.F and pkg/exf/EXF_OPTIONS.h :
1903      - changes to use model/src/the_main_loop.F rather than the ecco version
1904        in ecco type adjoint runs.
1905    o model/src:
1906      - move computation of recip of grid distance & area from INI_MASKS_ETC to INI_GRID
1907      - move setting of h0Fac[C,W,S] from INI_LINEAR_PHISURF to INI_MASKS_ETC
1908      - update_masks_etc.F: rename SMOOTH*_R4,R8 function to the corresponding type (RS,RL)
1909    o model/src:
1910      - fix S/R UPDATE_CG2D for ALLOW_DEPTH_CONTROL case (was empty before);
1911        update output of test experiment bottom_ctrl_5x5.
1912    o pkg/generic_advdiff:
1913      - implement vertical bi-harmonic diffusion (for now, only for T & S and
1914        only explicitly).
1915    o verification/bottom_ctrl_5x5/
1916      update reference output (results changed quite some time ago,
1917      not sure when; but new reference results look ok in terms of grdchk)
1918    o verification/1D_ocean_ice_column/
1919      For verification purposes, the exact adjoint rather than an approx.
1920      should be used (e.g., to comare against F.D. or TLM).
1921      removed autodiff_inadmode*_ad.F routines in code_ad/
1922      Update results/ accordingly.
1923    o pkg/cal:
1924      - change cal_getdate.F so that output date is function of input time only
1925        (less ambiguous, not mixed up with input iteration number).
1926      - fix calendarDumps for non-zero phase-lag (S/R CAL_TIME2DUMP).
1927    o pkg/diagnostics:
1928      - implement calendarDumps also for stats-diags
1929      - implement calendarDumps also for snap-shot output (negative freq)
1930      - for now, ignores calendarDumps if non-zero phase-lag.
1931    
1932    checkpoint63n (2012/06/04)
1933    o model/src:
1934      - recompute rSurfW & S to ensure consistent column thickness (needed for rStar)
1935        between Sum_k(hFac*drF) and rSurf-rLow, for now only when using pkg/shelfice;
1936      - use h0FacC, W & S to compute hFac_surfC, W & S in calc_surf_dr.F (more
1937        similar to calc_r_star.F); update results of experiment internal_wave and
1938        tutorial_global_oce_in_p (affected @ truncation level).
1939    o pkg/shelfice:
1940      - add parameterisation of advective-diffusive flux into the ice shelf
1941        according to Holland and Jenkins (1999), eq.22-33, as suggested by Jan De Ryd
1942      - simply eps3/3a computation
1943    o eesupp:
1944     - add new CPP option (DISCONNECTED_TILES) to disconnect tiles (no exchange
1945       between tiles, just fill-in edges assuming locally periodic subdomain) and
1946       add corresponding exchange subroutines (EXCH0);
1947     - new CG-solver version (_EX0) for disconnected-tiles special case.
1948    o model/src (CG-solvers):
1949     - modify Single-Reduction version (CG2D_SR) in case cg2dMaxIters is reached
1950       (similar final residual output and max-Iter number as with standard version);
1951     - allows to store and use lowest-residual solution (standard & _SR versions);
1952     - cleaning up (remove old, commented out code, LETS_MAKE_JAM ...).
1953     - by default, also compile CG2D_SR version (define ALLOW_SRCG in CPP_OPTIONS.h)
1954    o eesup/src:
1955     - global_vec_sum.F cleaning: add a BARRIER ; update comments ; remove ndef
1956       ALWAYS_USE_MPI (no longer needed after fixing usingMPI settings - March 2012)
1957    o pkg/salt_plume added to lab_sea/input_ad.noseaicedyn
1958    
1959    checkpoint63m (2012/04/27)
1960    o pkg/shelfice:
1961     - account for partical cells in surface level below ice-shelf for hydrostatic
1962       pressure calculion (set uniformFreeSurfLev to F); update isomip experiments.
1963    o ad test experiments:
1964     - update and rename to "ad_optfile.local" local AD-optfile specific to a
1965       particular adjoint verification experiment (in verification/*/code_ad/)
1966    o pkg/seaice & pkg/exf:
1967     - Part two of ECCO-CLIVAR code merges.
1968       Completes merge of seaice area relax. code.
1969       Requires unified CPP option EXF_ALLOW_SEAICE_RELAX
1970       to be set in EXF_OPTIONS.h since this pkg controls its I/O
1971       (and avoids second CPP option in SEAICE_OPTIONS.h)
1972     - change default value of costIceStart & costIceEnd to a valid date.
1973     - add snowPrecip to HSNOW in seaice_growth
1974    o pkg/ptracers:
1975     - move ptracers summary and setup check into separated S/R ; add a check for
1976       valid PTRACERS_Iter0 value (error+stop or just warning).
1977    o pkg/cal (+ pkg/ecco):
1978     - avoid calling a S/R with 2 times the same arg (FWD: unless both are only used
1979       as input; and for AD, unless both are not differentiable (e.g., k index)).
1980    o model/src:
1981     - define internal flag "uniformFreeSurfLev" (=T when free-surface level-index
1982       is everywhere k=1) to speed-up some calculations (by pass kSurf reference);
1983       temporary set to usingZCoords value (to be changed to F when using shelfice).
1984     - hydrostatic pressure: implement partial cell near the surface also for
1985       Z-coordinates (for the case where uniformFreeSurfLev=F); replace test on
1986       usingZCoords with test on uniformFreeSurfLev where needed (in NonHyd code).
1987    o pkg/ctrl/ctrl_init.F:
1988     - add a formal parameter to s/r ctrl_init_rec to print
1989       xx_$(ctrl_valiable)_file for easier debugging
1990     - move call of cal_* routines into the if-block where they are really
1991       needed so that xx_$(ctrl_variable)_period can be 0 or -12 without having
1992       to specify a startdate
1993    o pkg/seaice:
1994     - update comments in SEAICE_OPTIONS.h (+ similar update of lab_sea/code and
1995       global_ocean.cs32x15/code versions).
1996     - turn on seaice Multi-category (in data.seaice, SEAICE_multDim=7) for
1997       verification experiment global_ocean.cs32x15.seaice and update results.
1998    o pkg/exf:
1999     - new S/R EXF_GETFIELD_START to return starting-time of a forcing field
2000       (according to useExfYearlyFields).
2001    o pkg/cal:
2002     - move calendar setting & summary (previously in cal_readparams.F) into new
2003       S/R CAL_INIT_FIXED to be called later in the initialisation process, once
2004       length of the simulation is set (after SET_PARMS call); This is an attempt
2005       to fix Pb when, e.g.: pkg/longstep, modifies the length of the run.
2006     - For safety: keep a record of pkg/cal parameter settings status
2007               to allow to STOP if one pkg/cal S/R is called too early.
2008     - add a stop in all basic pkg/cal subroutines if called before setting is done.
2009     - modify cal_getdate.F: stop when nothing was returned;
2010       if called with myIter=-1, simply retrun modelBaseDate (1,2 = startDate_1,_2);
2011       this allows to remove "cal.h" from seaice_read_parms.F & init_mnc_vars.F.
2012    
2013    checkpoint63l (2012/04/04)
2014    o pkg/bbl:
2015      - fix call to FIND_RHO_2D in bbl_calc_rho.F (case multi-tiles per proc);
2016        update global_with_exf output.yearly.txt file.
2017    o pkg/cal:
2018      - start to clean-up cal_set.F ; fix for the case where baseTime is non-zero.
2019      - remove 2 unsused and very short (1 line only) functions ;
2020      - remove unsused subroutines from AD-Diff list.
2021    o model/src:
2022      - start to implement clean wait to stop in initialization S/R (config_check.F,
2023         packages_check.F, ini_parms.F and pkg/obcs/obcs_check.F + pkg/mypackage)
2024    o folowing PRINT_MESSAGE changes:
2025      - remove reminder multiple print to the same file (STDOUT) when multi-threads.
2026    o pkg/bbl:
2027      - modification so it can work with z*
2028      - replace deltaT with dTtracerLev(k) for asynchronous time stepping
2029      - global_with_exf/input.yearly verification; changes output.yearly.txt
2030    o eesupp/src:
2031      - PRINT_MESSAGE: use OpenMP critical instruction (similar to PRINT_ERROR);
2032        writing to unit 0 (if unit=errorMessageUnit) extended to the case myThid=1
2033      - CHECK_THREADS: specific code if using OpenMP threading: improve checking of
2034        # of threads across processors (e.g., different env OMP_NUM_THREADS setting)
2035      - improve special preliminary call to EESET_PARMS (if eedata is read 2 times).
2036      - when using MPI, always set usingMPI=T ; set default accordingly and stop
2037        if not consistent.
2038      - ALL_PROC_DIE: add a BARRIER after MPI_FINALIZE call ; skip this when thread
2039        argument is zero (in case called within single-thread section).
2040    o pkg/fizhi:
2041        clean-up turbulence cold-start switch: decided in fizhi_init_vars.F, stored
2042        in common bloc (fizhi_coms.h) and then passed as argument up to S/R TURBIO.
2043    o pkg/exch2:
2044      - add argument "updateCorners" to S/R exch2_get_uv_bounds (enable to
2045        activate EXCH_IGNORE_CORNERS in vector EXCH S/R).
2046      - switch 1rst EXCH call to IGNORE_CORNERS (instead of UPDATE_CORNERS)
2047        but keep the 2nd with UPDATE_CORNERS: this prevents overwriting good data
2048        with bad ones coming from a not-yet-updated halo.
2049        This should fix the problem when sNx <> sNy and GCD(sNx,sNy) < 2*Olx.
2050    o pkg/frazil:
2051        move FrzForcT diag from frazil_diagnostics_state.F to frazil_calc_rhs.F
2052        http://mitgcm.org/pipermail/mitgcm-devel/2012-March/005384.html
2053    o model/src/config_check.F: add a check for OLx>sNx/OLy>sNy
2054    o verification/lab_sea
2055      * #undef SEAICE_EXCLUDE_FOR_EXACT_AD_TESTING
2056      * #define ALLOW_SST_CONTROL & ALLOW_SST_CONTROL
2057      * nTimeSteps 3 -> 4
2058      * changed reference output accordingly
2059    o pkg/ctrl:
2060      * fix ctrl_get_gen for xx_sst, xx_sss
2061    o pkg/fizhi:
2062      - fix 2 calls to S/R GRD2MSC (argument igrd) in update_earth_exports.F
2063        update results of exp. fizhi-cs-32x32x40 (fail with only 6 digits for cg2d)
2064      - by default, use new version of S/R GETPWHERE (#define TRY_NEW_GETPWHERE);
2065        fix few out-of-bounds indices in referencing vars (initialise igrd to 1);
2066        clean-up fizhi_turb.F (remove unused & uninitialised qdiaglsm array).
2067    o pkg/gmredi:
2068      - add diagnostic of Redi (main diagnonal) vertical diffusive flux of Temp
2069    o pkg/fizhi:
2070      - fix few initialisation and multi-tile Pb: aqualev & gridalt now pass the
2071        (old)aces open64 tuv test.
2072    o pkg/icefront: fix bug and reorder loop in icefront_init_varia.F
2073    o pkg/mom_vecinv:
2074      - fix 1 loop range in mom_vecinv.F to be like all the other loops which
2075        set/update gu,gv/Diss (fix Pb of uninitialised fVerUkp in admom_vecinv
2076        with non-lin free-surf).
2077    o model/src: move k-loop outside of i/j-loops when (re-)computing R_low
2078      in ini/update_masks_etc.F in order to avoid -O3 optimization problems with
2079      some compilers (gfortran 4.6.0 on MacOS)
2080    o momentum:
2081      - separate fVer?(:,:,kUp) & fVer?(:,:,kDown) in argument list of MOM_FLUXFORM
2082        & MOM_VECINV subroutines (to help TAF). This fixes Pb of uninitialised
2083        fVer?(kUp) in admom_fluxform with non-lin free-surf or bottom control.
2084    
2085    checkpoint63k (2012/03/17)
2086    o model/src:
2087       - selectAddFluid (ALLOW_ADDFLUID): add missing term in horizontal momentum
2088         flux-form (mom_fluxform.F) and vertical momentum (calc_gw.F) equations.
2089       - SOLVE_DIAGONAL: switch default to use adjoinable & vectorized version
2090         (#undef SOLVE_DIAGONAL_LOWMEMORY); update output of exp. front_relax.bvp.
2091    o model/src: solve_*diagonal.F
2092       - replace division with multiplication by inverse (similar to original version)
2093         update output of AD exp. global_ocean.90x40x15.
2094       - fix pkg/gmredi/gmredi_calc_psi_bvp.F & pkg/ggl90/ggl90_calc.F
2095         to enable the use of the vectorized & differentiable solve_tridiagonal.F
2096       - test exp. global_ocean.90x40x15/input_ad: switch to advection scheme 20 for
2097         vertical advection (to get solve_tridiagonal tested in AD mode).
2098    o pkg/seaice: ECCO-CLIVAR merge:
2099      1. seaice AREA relaxation
2100         * CPP option: SEAICE_ALLOW_AREA_RELAXATION
2101         * runtime flag: SEAICE_tauAreaObsRelax
2102      2. modified global mean cost imbalance code: CPP option
2103          ALLOW_SSH_GLOBMEAN_COST_CONTRIBUTION
2104    o another iteration on solve_*diagonal.F
2105       Make choices independent of AUTODIFF
2106       Default will be the adjoinable vectorized version.
2107       Alternative choices are:
2108       * non-adjoinable original version with low memory footprint:
2109         #define SOLVE_DIAGONAL_LOWMEMORY
2110       * still adjoinable but does not vectorize (k as inner-most loop):
2111         #define SOLVE_DIAGONAL_KINNER (keeping SOLVE_DIAGONAL_LOWMEMORY undef)
2112    o testreport
2113     - add option to use a home made wrapper around "make"
2114     - remove MITGCM_IEEE env. variable (no longer active)
2115    o pkg/shelfice
2116     - improve computation of friction velocity for velocity dependent
2117       exchange coefficients: include velocities into SHELFICEBoundaryLayer
2118       block to average velocities vertically
2119     - add TAF store directives for SHI_ALLOW_GAMMAFRICT
2120    o Modify diagonal solvers, now three versions (upon request):
2121      #ifndef SOLVE_DIAGONAL_AUTODIFF
2122        1. default version (dating back a while ago)
2123      #else /* def SOLVE_DIAGONAL_AUTODIFF */
2124      # ifdef SOLVE_DIAGONAL_KINNER
2125        2. adjoinable version with k-innermost loop (G. Forget)
2126      # else
2127        3. adjoinable vectorized version of 2.
2128      # endif
2129      #endif /* SOLVE_DIAGONAL_AUTODIFF */
2130      All flags are currently set within routines, but could/should be moved to CPP-options.
2131      Array bounds for 1. are as before, for 2.,3. cover the entire domain
2132      (could be changed for 1. too).
2133    o verification/lab_sea (fwd):
2134      - update the 4 fwd lab_sea test experiment: no longer SEAICE_GROWTH_LEGACY,
2135        use 7 categories (except hb87), new solve4temp params (except salt_plume),
2136        constant salinity (=4) or variable salinity (salt_plume) done through
2137        SItracer.
2138    o pkg/seaice:
2139      - rename parameters: SIsalFrac to SEAICE_saltFrac & SIsal0 to SEAICE_salt0;
2140      - remove old parameters ( SEAICE_freeze, SEAICEturbFluxFormula, SEAICE_gamma_t,
2141         SEAICE_gamma_t_frz, SEAICE_availHeatTaper & SEAICE_availHeatFracFrz)
2142        from SEAICE_PARMS.h ; still need to fix seaice_cost_sst.F (broken when
2143        SEAICE_freeze got retired) but already better than previously with
2144        SEAICE_freeze=123456.7 deg.C;
2145      - move setting of facOpenGrow/Melt from SEAICE_INIT_FIXED to SEAICE_READPARMS
2146        (safer multi-threaded setting); always set SEAICEuseEVP;
2147      - setting of ocean-ice turb. flux coeff: moved from SEAICE_CHECK to
2148        SEAICE_READPARMS & SEAICE_INIT_FIXED (this fixes wrong summary report);
2149        stop if multiple specifications for the same coeff; make sure default
2150        SEAICE_mcPheePiston is compatible with drF(1) & deltaT.
2151    o pkg/obcs:
2152      - allow to switch to upwind 1rst order advection scheme for the advective
2153        flux computation at the open-boundary; disabled for adjoint built.
2154    o pkg/ptracers:
2155      - rename PTRACERS_RESTART.h -> PTRACERS_START.h
2156      - rename ptracers_fields_blocking_exchanges.F -> ptracers_fields_blocking_exch.F
2157      - add parameter to decide when to start a tracer; use internal flag to
2158        know which tracer to step-forward; switch this internal flag at the top
2159        of forward_step.F (new S/R PTRACERS_SWITCH_ONOFF); for now, not enabled
2160        for adjoint built.
2161    o pkg/seaice:
2162      - add SEAICE_SIZE.h anywhere in the code where SEAICE.h is included ;
2163      - move MULTDIM declaration and setting from SEAICE.h to SEAICE_SIZE.h ;
2164      - keep experiment offline_exf_seaice truly single category (set MULTDIM=1).
2165    o pkg/ecco:
2166      - fix writing of output file DiagnosCost_ClimSalt/Theta
2167        and DiagnosCost_DriftSalt/Theta (if multi-tiles per proc).
2168    o pkg/seaice:
2169      - add missing initialisation of COR_ICE array in dynsolver.F
2170      - merging SEAICE_MULTICATEGORY define and undef cases. Now the same code is
2171        compiled either way, and is tested in all exps (multidim was only tested
2172        in lab_sea ad before).
2173      - cosmetic change to prepare for future addition of ITD. no change to results.
2174        no defaults change.
2175      - added run time param SEAICE_multDim (7 for SEAICE_MULTICATEGORY, 1 otherwise).
2176      - by lack of adequate verification experiments, I further used custom versions
2177        of global_ocean.cs32x15 to test multicat or not, with pickup or not. All
2178        should be correct.
2179      - avoid recomputations in ad.
2180    o array initialisation in adjoint mode:
2181      1) pkg/mom_common/mom_calc_ke.F:
2182        add full array initialisation of KE inside mom_calc_ke.F (ALLOW_AUTODIFF_TAMC):
2183        The S/R which calls MOM_CALC_KE initialises KE but in some recomputation
2184        part this initialisation is gone, resulting in Floating Point Exception
2185        (caught by open64 compiler with debug option).
2186      2) model/src/convective_weights.F
2187        set output convectCount over the full array range (instead of doing
2188        an update): this fix a similar issue when called within recomputation (adjoint)
2189        which could by-pass the initialisation (normally done in the caller S/R).
2190    o pkg/seaice:
2191      - final version of turbulent flux params, as agreed at MIT ice meet:
2192           SEAICE_mcPheePiston (default is ~ 0.000875)
2193           SEAICE_mcPheeTaper (default is 0.)
2194           SEAICE_frazilFrac (defualt is 1.)
2195           SEAICE_mcPheeStepFunc (default is false)
2196      - changes results at trunction error level
2197      - ifdef SEAICE_EXTERNAL_FLUXES, disallow SEAICE_waterAlbedo
2198    o added pkg/frazil:
2199      - see frazil_description.tex for details
2200      - verification experiment is global_with_exf/input.yearly; changes output.yearly.txt
2201    o pkg/shelfice/shelfice_thermodynamics.F
2202      - fix exponents for velocity dependent exchange coefficients: change
2203        from 2/3(=0) to 0.66666666666666667
2204      - move computation of velocity dependent exchange coefficients into
2205        separate loop, so that it applies to both thermodynamics
2206      - move some divisions by constants out of loops
2207    
2208    checkpoint63j (2012/02/16)
2209    o pkg/seaice:
2210      - overhaul of seaice_summary.F after feb 2012 clean-up of seaice_growth.F etc.
2211      - SItracer:  added run time params, and allow coupling to ocn salinity.
2212    o pkg/seaice: remove (almost) all divisions by constants within loops
2213      in seaice_growth.F and seaice_solve4temp.F, this changes (only) the cg2d
2214      results of global_ocean.cs32x15.seaice from 16 to 11 digits (but only
2215      those, caused by 1/QI -> recip_QI) -> update output.seaice.txt,
2216      output_adm.seaice_dynmix.txt and also lab_sea: output_adm.evp.txt
2217    o pkg/seaice :
2218      - simplify McPhee tapering, and allow to use it with SEAICEturbFluxFormula
2219        = 1 or 2, using newly added run time parameter SEAICE_availHeatTaper.
2220      - fix d_AREAbyATM, d_AREAbyOCN, d_AREAbyICE diags I broke in r1.148.
2221      - add permanent SItflux diag that corresponds to TFLUX but includes
2222        ice+snow. Hence SItflux-TFLUX should match the ice+snow heat budget.
2223      - allow activation/testing of a fix for suspected missing term in
2224        ocn-ice heat budget (to be confirmed). To test this, you want to
2225        undef SEAICE_DISABLE_HEATCONSFIX, and then set the run time param
2226        SEAICEheatConsFix to .TRUE. that also allows the 'SIaaflux' diagnostic.
2227      - no change in results, fwd or ad.
2228    o global_ocean.cs32x15/results: 3 changes following from the pkg/seaice commit below:
2229      - switch to variable freezing point.
2230           Results change : cg2d -> 1 digits; ad -> 3-6-6 digits.
2231      - bug fix : the sublimation term that was missing is now activated.
2232           Results change : cg2d -> 2 digits; ad -> 8-6-6 digits.
2233      - bug fix : flooding sign term for SIsal0.NE.0.
2234           Result change : cg2d -> 8 digits; ad -> 11-12-9 digits.
2235    o pkg/seaice:
2236      - unified freezing point treatment : the old SEAICE_VARIABLE_FREEZING_POINT
2237        is now the default, and the old default constant freezing point is recovered
2238        with SEAICE_tempFrz0    = -1.96,
2239             SEAICE_dTempFrz_dS = 0.,
2240      - retire SEAICE_freeze (= the old way of specifycing the constant freezing point)
2241      - remove ALLOW_SEAICE_FLOODING brackets; run time switch is already there.
2242      - bug fix (thanks to M. Losch) : the sublimation term that was missing is now
2243        activated. To reproduce old results with this bug define SEAICE_DISABLE_SUBLIM.
2244      - bug fix (silly me) : flooding sign term (seaice_growth.F r 1.149line 1211)
2245        was wrong for SIsal0.NE.0. Changes cs32x15 results (see above item for detail).
2246      - bug fix (thanks to O. Jahn) : area loss for melting  got messed up in
2247        seaice_growth r149 for legacy branch (no results change).
2248      - introduce SEAICE_CAP_SUBLIM : caps sublimation heat flux in solve4temp (code
2249        from I. Fenty).
2250      - results did not change except for global_ocean.cs32x15, mostly due to the
2251        switch to variable freezing point (see above item for detail).
2252    o pkg/thsice:
2253      - fix and simplify interface to salt_plume pkg ; diagnose directly amount of
2254        seawater freezing in thsice_calc_thickn (not used).
2255    o pkg/seaice: turbulent flux term specification via run time params.
2256      - replace CPP switches with run time switches to facilitate testing
2257      - retired CPPs : MCPHEE_OCEAN_ICE_HEAT_FLUX,
2258                       GRADIENT_MIXED_LAYER_TURBULENCE_FACTOR
2259      - added runtime parameter : SEAICEturbFluxFormula
2260      - move Mcphee constants to SEAICE_PARAMS.h
2261      - seaice_readparms.F : read turbulent flux term params (SEAICEturbFluxFormula;
2262                 SEAICE_availHeatFrac/Frz, or SEAICE_gamma_t/_frz if apply);
2263                 remove seaice_summary call (moved to seaice_init_fixed)
2264      - seaice_init_fixed.F : set SEAICE_availHeatFrac/Frz depending on
2265        SEAICEturbFluxFormula, and seaice_summary call (moved from seaice_readparms)
2266      - seaice_summary.F : add missing report of read turbulent flux term set up
2267                           and SITRACER.
2268      - seaice_check.F : check range; inform and stop if retired CPPs are used
2269                         (incl. SEAICE_AGE).
2270      - seaice_growth.F : unified use of SEAICE_availHeatFrac/Frz, without
2271             CPP switch, same computation as before for the different options.
2272      - change results at the truncation level.
2273    o pkg/seaice:
2274      - remove un-used parameters LAD & MAX_TICE ; add new run-time parameters:
2275        useMaykutSatVapPoly (default=F), postSolvTempIter (default=2) and
2276        SEAICE_wetAlbTemp (default=-1e-3). Remove option SEAICE_SOLVE4TEMP_LEGACY.
2277      - update verification/*/input*/data.seaice:
2278        to reproduce previous results with former #defined SEAICE_SOLVE4TEMP_LEGACY
2279        code, set useMaykutSatVapPoly=T & postSolvTempIter=0 ;
2280        and to reproduce previous results with former non-SOLVE4TEMP_LEGACY code,
2281        set SEAICE_wetAlbTemp=0 & SEAICE_snowThick=0.
2282    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY):
2283      - remove LEGACY code for solving for tsurf (A1,A2,A3) but maintain the same
2284        algorithm (same choice: useMaykutPolySatVap=T, postSolvTempIter=0);
2285        difference in results only due to machine truncation.
2286      - remove MAX_TICE (tsurf is always =< TMELT anyway); keep MIN_TICE if using
2287        MaykutPolySatVap; keep MIN_LWDOWN.
2288      - adapt SEAICE_MODIFY_GROWTH_ADJ code (untested) to non-legacy formulation.
2289      - update output of verification exp. lab_sea (4 fwd: 11 cg2d digits except hb87,
2290        + 3 AD: 6 digits except evp) and offline_exf_seaice.seaice (12 digits).
2291    o pkg/salt_plume:
2292      - isolate saltPlumeFlux array exch into a specific S/R called from
2293        do_oceanic_phys.F
2294      - add interface to pkg/salt_plume (filling of saltPlumeFlux) in pkg/thsice.
2295    o verification:
2296      - move untested set-up to MITgcm_contrib/verification_other.
2297    o pkg/seaice:
2298      - retire old way of SEAICE_AGE. Now replaced with ALLOW_SITRACER.
2299    o pkg/seaice:
2300      - seaice_solve4temp.F (keeping results unchanged):
2301        * add 2 future run-time params to select which saturation vapor pressure
2302          formula is used and how post-iteration fluxes are set.
2303          Temporary set these 2 params according to option SOLVE4TEMP_LEGACY;
2304        * New piece of code (not used) to update surf. atmos. heat flux F_ia using
2305          the linearized expression to stay consistent with tsurf finding.
2306      - seaice_freedrift.F avoid floating exception in sqrt(y) since y=sqrt(x*x)-x
2307        can be < 0.
2308    o pkg/seaice/seaice_solve4temp.F (SOLVE4TEMP_LEGACY undef):
2309      - remove from F_ia (and from it's derivative dFiDTs1) the contribution of
2310        conductive heat flux F_c , and add it explicitly when updating tsurf as
2311        solution of: Fc = Fia + d/dT(Fia - Fc) *delta.tsurf
2312        so that now F_ia has a consistent meaning through the entire routine.
2313        This causes differences at truncation level: update output of fwd exp.
2314        global_ocean.cs32x15.seaice.
2315    o pkg/seaice:
2316      - lots of editing/cleaning in seaice_solve4temp.F + better documentation
2317        of arrays, sign/direction of fluxes; no effect on results.
2318      - replace hard coded 273.16 (=previous value of celsius2K) by celsius2K
2319        in seaice_budget_ocean.F & seaice_solve4temp.F (SOLVE4TEMP_LEGACY part);
2320        note: this should have been done before changing celsius2K default.
2321      - to keep results unchanged, add back old value of celsius2K in verification
2322        exp. input*/data : lab_sea (AD), offline_exf_seaice (fwd+AD) & seaice_obcs
2323      - replace hard coded seawater freezing temp in seaice_solve4temp.F (part
2324        SOLVE4TEMP_LEGACY) of 271.20 (=previous value of celsius2K + default
2325        value of SEAICE_freeze) by celsius2K+SEAICE_freeze so that seawater
2326        freezing temp is consistent with value in seaice_growth.F ; this causes
2327        differences at machine truncation level: update lab_sea AD output (3/4).
2328    o pkg/seaice:
2329      - mask (in exf_init_fixed.F) atemp,aqh,evap,precip,runoff,lwflx,areamask
2330        and climsst/sss even when using seaice (to prevent calculation that might
2331        use SST on land); does not affect any verification exp.
2332      - apply mask to taux,tauy (in seaice_get_dynforcing.F); update output
2333        of lab_sea.fd & lab_sea.hb87 and global_ocean.cs32x15.seaice_dynmix.
2334    o pkg/seaice/seaice_growth.F: add mask to avoid non-zero ice thickness
2335      over land (non-legacy code)
2336    o vectorize salt_plume package:
2337      - add extra code to salt_plume_frac and salt_plume_tendency_apply_s
2338      - this code computes plumebk everywhere (also over land), thus requires
2339        code to avoid divisions by zero and catch the case of kLev=Nr.
2340      - efficiency of salt_plume_frac is still sub-optimal
2341    o tools (genmake2):
2342      - fix makefile NAME specification (option: -makefile NAME) by adding
2343        "-f $MAKEFILE" in few places where it was missing including makedepend
2344        command (contribution from Paul).
2345    
2346    checkpoint63i (2012/01/24)
2347    o model/src:
2348      - add factorized versions of some EOS code to find_rho.F,
2349        define USE_FACTORIZED_EOS to turn it on (default for TARGET_NEC_SX)
2350    o model/src:
2351      - add celsius2K to namelist PARM01; remove unused recip_rhoNil from PARAMS.h;
2352      - change default celsius2K from 273.16 to 273.15
2353      - to keep results unchanged, add back old value of celsius2K in verification
2354        exp. input*/data : aim.5l_cs, 1D_ocean_ice_column, lab_sea (fwd),
2355         global_ocean.cs32x15(seaice) & cpl_aim+ocn(input_atm).
2356    o model/src: add a little initialisation trick to find_rho.F and find_alpha.F
2357      to make TAF generate vectorizable code
2358    o pkg/seaice/seaice_evp.F: add code (copied from CICE) that avoids underflows.
2359       Turn on by defining SEAICE_EVP_ELIMINATE_UNDERFLOWS. Most compilers
2360       have flags that do this more efficiently.
2361    o pkg/diagnostics/diagstats_calc.F
2362      - for TARGET_NEC_SX fix the treatment of the scaling factor tmpFac=scaleFact
2363    o pkg/obcs (with exch2):
2364      - derive OB indices in overlap region from OB-InsideMask (in obcs_init_fixed.F)
2365        and remove code (in obcs_readparms.F) which was based on EXCH of indices
2366        (through buffer) and did not account for exch2 (e.g., CS-grid) topology.
2367    o pkg/exf and seaice exp:
2368      - change offline_exf_seaice.seaicetd test exp. to use default DIFF1 value (=0)
2369        so that switching off area & heff advection flags does not affect results.
2370      - change default EXF_LWDOWN_WITH_EMISSIVITY to #define in EXF_OPTIONS.h
2371      - keep exp. seaice_obcs & 1D_ocean_ice_column(ad) unchanged (using #undef
2372        EXF_LWDOWN_WITH_EMISSIVITY) and, using pkg/exf default emissivities, update
2373        results of verification experiments: 1D_ocean_ice_column(fwd),
2374        global_ocean.cs32x15.seaice(fwd+ad) & seaice_dynmix(ad), lab_sea (all 8)
2375        and offline_exf_seaice (all 4).
2376    o pkg/seaice:
2377      - remove array YNEG, RIVER, TMIX (replaced by local var) from common block;
2378        remove also areaNm1 & hEffNm1 when SEAICE_GROWTH_LEGACY is undef.
2379      - fix bug: areaNm1 & hEffNm1 are needed in seaice_growth (SEAICE_GROWTH_LEGACY)
2380        but were not filled when resp. SEAICEadvArea=F & SEAICEadvHeff=F and
2381        not multi-dim advection;
2382      - fix seaice_growth.F to compile with both SEAICE_GROWTH_LEGACY and
2383        SHORTWAVE_HEATING #undef.
2384    o optim: make Makefile more robust (?)
2385    o pkg/obcs:
2386      * fix treatment of obcs_read_pickup for TAF
2387    o pkg/shelfice:
2388      * add missing initialisation of num_shifwflx
2389      * new adjoint verification exp. for isomip
2390      * change Prandtl and Schmidt numbers from generic formulations
2391        (in terms of model diffus. and visc.) to separate runtime
2392        parameters, with Holland and Jenkins (1999) default values.
2393    o pkg/exf (interpolation):
2394      - extended input field (2 rows) near the N & S poles:
2395        * fill in with the symetric value (when even Nb of data in longitude)
2396        * add average value at the poles only for scalar quantities ; for vector
2397          component interpolation, skip the averaging and keep duplicated values,
2398          unless the 2 components have same location (uvInterp=T) in which case
2399          interpolate the 2 components together using S/R EXF_INTERP_UV.
2400      - new S/R EXF_INTERP_UV to interpolate the 2 components of a vector field
2401        together: this allows to account properly for local orientation when
2402        averaging at N & S pole.
2403      - add CPP option EXF_USE_OLD_INTERP_POLE to recover old results regarding
2404        exf-interpolation near N & S poles. Undef by default.
2405      - add debug check/print on 1rst iter if debugLevel >=2.
2406    o pkg/exf:
2407      - change masking flags definition (no longer "parameter"), put them in
2408        common block and set them in S/R EXF_INIT_FIXED.
2409      - change recognized masking flag from s,u,v to c,w,s since the mask
2410        to use (maskC,W,S) depends on position on model grid and has little to
2411        do with scalar/vector difference; fix masking if using P-coordinates.
2412      - fix masking of wind-stress (was wrong if interpolated or read on A-grid)
2413        and update results of exp. global_with_exf (x2).
2414      - fix setting of zenith-angle table when SHORTWAVE_HEATING is undef.
2415    o pkg/obcs
2416      - S/R obcs_calc_stevens: fix a small bug (gammat -> gammas where appropriate)
2417    o pkg/exf (interpolation):
2418      - assume periodicity in X only if input field cover full longitude range.
2419      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
2420        and should vectorise).
2421      - fix input lat of the 2 added row (in case we provide N.pole data).
2422    
2423    checkpoint63h (2011/12/30)
2424    o pkg/seaice:
2425      - change declaration of UVM from _RL to _RS in order to get B-grid
2426        uIce,vIce monitor when _RS = real*4
2427    o pkg/offline:
2428      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
2429      - compute vertical velocity if not read from file (switch on exactConserv
2430        & staggerTimeStep);
2431      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
2432    o verification:
2433      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
2434        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
2435        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
2436      - update output of exp. global_ocean.cs32x15.viscA4 after changing
2437        grid-file angles (used here for coriolis-3d);
2438      - remove (or gzip) few files not needed to run fizhi-cs experiments.
2439    o pkg/exf (vector interpolation):
2440      - rotate vector component toward local grid-axis orientation using grid-angles
2441        (stored in GRID.h) instead of locally computed rotation angle; keep old code
2442        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
2443    o pkg/seaice:
2444      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
2445        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
2446    o pkg/PKG_OPTIONS.h files:
2447      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
2448        outside of the #ifdef ALLOW_THISPKG / #endif block.
2449      - update verification/*/code/PKG_OPTIONS.h files.
2450    o add a verification experiment (offline_exf_seaice/input.seaice) that test
2451      the B-grid LSOR solver
2452    o pkg/seaice: sort out emissivity and long wave radiation step 2:
2453      - add emissivity for snow and ice as new run-time parameters
2454        (unfortunately) that default to the corresponding exf values; this
2455        changes results in most verification experiments so that for backward
2456        compatibility these parameter have to be set explicitly to inconsistent
2457        values (ugly);
2458      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
2459        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
2460        until we agree how to handle this bug properly
2461    o pkg/exf (interpolation):
2462      - add a set of run-time param ({inputfield}_interpMethod), one for
2463        each interpolated input field, to select the interpolation method
2464        with a value of zero switching off the interpolation;
2465      - print interpolation parameters to standard output;
2466      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
2467        (to use instead runoff_interpMethod=0 in data.exf).
2468      - simplify default setting of interpolation parameters (for all fields,
2469        set position to match model grid cell-center position, leading to trivial
2470        interpolation in case of regular Lat-Lon grid) and fix for the case of
2471        non-uniform delY.
2472    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
2473       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
2474       this factor is absolutely required, because the lw exitance (= out-going
2475       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
2476       where the reflectivity rho = 1-emissivity for conservation reasons. Once
2477       this is established, we can remove the CPP-Flag (if we want to).
2478    o pkg/seaice:
2479      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
2480        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
2481      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
2482        what the name implies (and not emissivity*BoltzmannConstant), this means
2483        the old default value of 5.5e-8 now means
2484        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
2485        S/R exf_readparms
2486      - FV-discretization of the B-grid LSOR solver, turn on with
2487        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
2488        of the calling routine dynsolver, so that B and C-grid code look a
2489        little more alike.
2490      - fix index bugs in ostres.F (B-grid code)
2491    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
2492    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
2493      default for SEAICE_emissivity, if useEXF; requires setting a wrong
2494      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
2495      backward compatiblity
2496    o model/src: use sigmaR in calc_ivdc
2497    
2498    checkpoint63g (2011/12/16)
2499    o pkg/seaice/seaice_growth.F:
2500      fix heat conservation of the coupled ocean-seaice system.
2501      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
2502      solid vs liquid water treatment is resolved via QNET.
2503    o pkg/seaice/seaice_growth.F:
2504      add missing term for sublimation in saltFlux, which was breaking conservation.
2505    o pkg/seaice/seaice_model.F:
2506      Remove this patholigical case treatment in evolution branch,
2507      where it is un-necessary and breaks conservation.
2508      Update global_ocean.cs32x15/results accordingly for
2509      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
2510    o model/src:
2511      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
2512      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
2513    o pkg/obcs:
2514      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
2515      tendency for temperature and salinity that is then applied to update
2516      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
2517      horizontal advection and diffusion contributions on the boundary (in
2518      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
2519      removing the mask in S/R timestep_tracer. The advantage of this approach is
2520      that the updated tracer values include contributions from the surface
2521      forcing and vertical diffusion.
2522      This modification changes exp4.stevens because of vertical diffusion.
2523    o model/src:
2524      change non-curvilinear grid setting to also work with exch2 + blank tiles:
2525      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
2526        face dimensions.
2527      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
2528        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
2529        and INI_SPHERICAL_POLAR_GRID.
2530      change test-experiment global_ocean.90x40x15:
2531      - split the domain in many more tiles (9x4 tiles of 10x10 each);
2532      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
2533      - update results of both test (std & dwnslp).
2534    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
2535       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
2536    o model/src:
2537      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
2538        and fix initialisation when using sigma-coords.
2539    o model/src:
2540     - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
2541       to their current value at the beginning of forward_step.F": add a new run-time
2542       switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
2543     - set doResetHFactors=T in the following test exp:
2544        global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
2545        global_ocean.cs32x15/input.seaice (rStar), hs94.cs-32x32x5/input.impIGW (linFS)
2546        and tutorial_global_oce_in_p (nonLinFS in p)
2547    o pkg/ecco
2548      - added IES cost term
2549    o verification/advect_xz
2550      - scale down the depth by 1/100 (from 200 km to just 2.km)
2551      - add secondary test using divergent flow, r-star and implicit vertical advection.
2552      - add note (check_conserve_TS.txt) and matlab script to check global
2553        conservation of T & S with NonLin-FreeSurf and Adams-Bashforth.
2554    o pkg/rbcs:
2555      - add missing relaxUFile & relaxVFile in namelist (in rbcs_readparms.F).
2556    o pkg/obcs (Stevens BCs):
2557      - fix various problems in the phase speed computations of the Stevens
2558        boundary conditions:
2559        - sign error for western and southern boundaries,
2560        - time tendencies were underestimated by factor of dTracerLev and some just
2561          zero (for multidim advection schemes) -> now estimate time tendencies
2562          from difference between previous (n) time level and the one before (n-1);
2563          this requires storing a field per tracer per boundary, also in the pickup
2564          files.
2565        - replace deltaTmom in cflMer/Zon computation with dTracerLev
2566        - set default phase velocity to cflMer/Zon
2567      - update verification experiment exp4.stevens
2568    o pkg/generic_advdiff (implicit_r):
2569      - fix implicit vertical advection conservation with AB and/or NonLin-FreeSurf
2570        (remove Tr*d/dz(w) in gad_implicit_r.F and add it in gad_calc_rhs.F);
2571      - fix implicit vertical diffusion or advection with NonLin FreeSurf
2572        (was using current recip_hFacC instead of future recip_hFacC): set future
2573        recip_hFac in thermodynamics.F and pass & use it in all vertical implicit
2574        solver S/R ;
2575      - fill diagnostics of vertical advective fluxes (computed from tendency)
2576        when using implicit vert. advection;
2577      - update output of exp that uses NonLin-FreeSurf & implicit vertical diffusion:
2578         global_ocean.90x40x15 (fwd+AD), global_ocean.cs32x15 (4 fwd +4 AD),
2579         tutorial_global_oce_in_p (fwd), tutorial_tracer_adjsens (AD)
2580         and cpl_aim+ocn (used in ocean); to be fixed: bottom_ctrl_5x5.
2581    o pkg/diagnostics:
2582      - add diags for T & S tendency which goes through Adams-Bashforth.
2583    
2584    checkpoint63f (2011/11/30)
2585    o pkg/obcs/obcs_calc_stevens.F:
2586      - join some loops to reduce number of if-statements
2587      - fix a bug in code for northern and southern boundaries.
2588    o pkg/seaice/seaice_init_varia.F
2589      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
2590        caused zero ice-velocities for the B-grid code
2591    o pkg/seaice/seaice_init_fixed.F
2592      - fix a bug in the initialisation of the second metric terms
2593        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
2594      - this affects all seaice configurations with useCurviLinearGrid = .true.
2595        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
2596        = .true. (default)
2597      - the only verification experiment affected is global_ocean.cs32x15:
2598        icedyn, seaice, and seaice_dynmix (AD)
2599    o pkg/thsice/thsice_diagnostics_state.F
2600      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
2601        not contain garbage that can lead to surprises in diagstats_calc.F
2602    o model/src:
2603      - move bi,bj loops inside INTEGR_CONTINUITY ;
2604      - call INTEGR_CONTINUITY directly from forward_step.F
2605        (previously called from momentum_correction_step.F)
2606      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
2607        forward_step.F and pkg/ecco/the_main_loop.F
2608    o model/src/do_oceanic_phys.F:
2609      - reset addMass to zero only if useICEFRONT ;
2610      - separated k-loop for rhoInSitu calculation ;
2611      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
2612        and at constant T,S (= WdRHOdP);
2613      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
2614        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
2615        transport of locally-referenced potential density);
2616        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
2617    o gluemnc:
2618      - replace ncrcat with ncks when adding variables to *.glob.nc
2619      - change the way variables without record dimensions are handled so that
2620        files that have variables with and without record variables can be glued:
2621        add a record dimension with a new unique name to be able to differentiate
2622        between variable with and without a-prior record dimensions. Remove
2623        this record dimension before adding the variable to the *.glob.nc file.
2624        This procedure automatically works also for grid.*.nc files that do not
2625        have any record dimension.
2626    o verification/cpl_aim+ocn:
2627      - generate new reference output on baudelaire (gfortran, mpich2) (previously
2628        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
2629    o pkg/obcs/obcs_calc_stevens.F:
2630      - add code for northern and southern boundaries.
2631      - reorder some loops to save some operations and so that drFBar can be scalar
2632    o model/src:
2633      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
2634        truncation) and add diagnostics for Adams-Bashforth tendency increment.
2635      - update test-exp. AD output:
2636        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
2637      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
2638        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
2639        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
2640        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
2641        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
2642        tutorial_plume_on_slope.
2643    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
2644      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
2645      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
2646      does not even come with an F77 compiler anymore, this should not be
2647      a limitation
2648    
2649    checkpoint63e (2011/11/06)
2650    o pkg/seaice adjoint of LSR:
2651      - substantially rework STORE dirs.
2652      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
2653        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
2654        and only perform SOLV_MAX_FIXED adjoint iters.
2655        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
2656        always goes to same record, meaning that the last forward field will be
2657        the one used in the adjoint - an approximation.
2658      - now produces non-zero LSR-related gradients, and acceptable gradients for
2659        An's zonal (x-z) test case (to be checked in)
2660      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
2661        (but these are screwed up by the thermodynamics in the first place);
2662        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
2663        output_adm.txt also reflects changes to seaice_lsr
2664      - global_ocean.cs32x15:
2665        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
2666          (output_adm.seaice.txt was updated)
2667        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
2668          (output_adm.seaice_dynmix.txt)
2669    o test-exp. exp4+stevens:
2670      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
2671    o pkg/seaice (lsr solver):
2672      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
2673        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
2674      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
2675      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
2676        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
2677      - compute (with new S/R) and print initial (+ free-driff sol. if available)
2678        and final residual of linearised system.
2679    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
2680      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
2681    o pkg/obcs: Stevens BCs (still only for east and west)
2682      - fix Stevens BCs by using intermediate velocities of previous
2683        time step as "baroclinic" contribution rather velocity of one grid cell
2684        inside the boundaries; more consistent but makes the entire treatment
2685        more complicated, requires new pickup files and two new S/Rs:
2686        obcs_copy_uv_n and obcs_save_uv_n
2687        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
2688        (undefined by default)
2689      - silently move computation of some grid factors into separate loops to
2690        save some recomputations
2691      - add a hack for non-linear free surface
2692      - add a verification experiment to exp4 that tests this code
2693    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
2694    
2695    checkpoint63d (2011/10/25)
2696    o pkg/obcs + seaice-dynamics:
2697      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
2698        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
2699        values (consistent with an implicit method).
2700      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
2701        return to older implementation (same results as before); note that none of
2702        the "experimental" OBCS_SEAICE options are implemented in the new version.
2703      - switch test exp. seaice_obcs to use new version (update output).
2704    o pkg/seaice:
2705      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
2706      - add parenthesis in Water-Ice drag calculations (evp & lsr);
2707      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
2708        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
2709      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
2710        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
2711    o pkg/layers:
2712      - Include potential density as new coordinate (Thanks to David Munday)
2713    o pkg/dic:
2714      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
2715        carbonate computation/output to CALC_PCO2_APPROX
2716    o pkg/generic_advdiff
2717      - make TAF generate code that vectorizes:
2718        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
2719    o model/src:
2720      - improve vectorization also for adjoint code of
2721        solve_tridiagonal and solve_pentadiagonal. As this requires up to
2722        5 new 3D-fields, this code is only turned on for the combination of
2723        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
2724        for singular matrix check (only for TARGET_NEC_SX).
2725      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
2726        ALLOW_AUTODIFF. This flag now needs to be set outside of
2727        solve_tri/pentadiagonal.F
2728    o pkg/exf:
2729      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
2730        optional namelist EXF_NML_OBCS).
2731      - add many debug-print (to trace down where pkg/cal error msg comes from)
2732    o pkg/mom_vecinv/mom_vi_hdissip.F
2733      - rearrange loops so that vectorization is improved and in particular
2734        the adjoint routine vectorizes. The code is a little longer now, but I
2735        think easier to read.
2736        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
2737    o pkg/seaice:
2738      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
2739    o pkg/exch2:
2740      - alternative code (without tile x tile matrix) for cumulated (global) sum;
2741        used as default; keep using matrix version in adjustment.cs-32x32x1.
2742    o tools/build_options:
2743      - after merging some MPI and/or multi-threads specific optfiles so that
2744        the modified default optfile support both built (using genmake2 -mpi
2745        for the MPI built, using genmake2 -omp for OpenMP built),
2746        move now obsolete optfiles to tools/build_options/unsupported/
2747       (add copy of email sent to support list in doc/optfiles_changes.txt)
2748    
2749    checkpoint63c (2011/09/28)
2750    o pkg/ebm:
2751      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
2752        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
2753    o pkg/seaice (SItracer pickup)
2754    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
2755      To be done:
2756      - thorough testing of missing fields in S/R seaice_read_pickup
2757      - thorough matching between generic tracers and specific fields used
2758        (e.g. volume-weighted age, area-weighted age, salinity, ...)
2759    o pkg/grdchk:
2760      - all procs calculate and print finite-difference gradient (for testreport)
2761      - change description output used by testreport;
2762      - AD testing: also compare and report Finite-difference gradient;
2763        => update all output_adm*.txt
2764    o test exp. global_ocean_ebm:
2765      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
2766        and turn on exactConserve; update (fwd) output.
2767    o pkg/seaice (LSR):
2768      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
2769      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
2770        * identical results with non-CS topology (but save up to half of EXCH calls)
2771        * no much changes in cs-32 verification tests since no ice at face edges
2772         (differences due to convergence criteria, since nb of iterations changed)
2773        * expect some differences on lat-lon-cap grid.
2774        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
2775    o pkg/exch2:
2776      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
2777        many tiles); until alternative coding is added, just add a stop.
2778    o pkg/kpp:
2779      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
2780        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
2781    o optfiles:
2782      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
2783        into corresponding standard one, which now support different build:
2784        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
2785      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
2786    o pkg/obcs (seaice):
2787      - add missing EXCH for uIce,vIce after applying OBCS;
2788      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
2789        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
2790        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
2791      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
2792      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
2793        and eedata.mth for MPI and mutlti-threaded testing.
2794    o pkg/flt:
2795      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
2796      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
2797      - fix pickup and trajectories + profiles output with multi-threads;
2798      - add parameter to select group of fields to write along trajectory and
2799        profile (default unchanged);
2800      - only call PORT_RAND* function when flt_noise <> 0;
2801      - add multi-threaded test for verification exp. flt_example.
2802    o eesupp/src:
2803      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
2804      - USE_OMP_THREADING: check that number of threads (from eedata) matches
2805        actual number (from env.var. setting).
2806    o pkg/ebm:
2807      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
2808      - add multi-threaded test for verification exp. global_ocean_ebm
2809    
2810    checkpoint63b (2011/08/29)
2811    o pkg/ebm:
2812      - fix sign of runoff;
2813      - update directly forcing fields (Qnet,EmPmR) to use standard
2814        external_forcing_surf.F (remove ebm_forcing_surf.F);
2815      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
2816      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
2817        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
2818      - update global_ocean_ebm parameters file data and update output (fwd+ad).
2819    o verification/matrix_example:
2820      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
2821        MPI and mutlti-threaded testing.
2822    o pkg/matrix:
2823      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
2824      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
2825      - fix for multi-threaded (remove DATA statement);
2826      - use standard DIFFERENT_MULTIPLE function;
2827      - add MATRIX_OPTIONS.h
2828    o verification/matrix_example:
2829       To allow to split the domain in several tiles, change the domain size
2830        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
2831        Western side) of land points.
2832    o (*_)write_pickup:
2833      - fix few bugs in mypackage_read/write_pickup.F
2834      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
2835        array of length 1 (was caught by compiler syntax-check).
2836    o pkg/diagnostics (velocity potential solver):
2837      - fix initialisation of main diagonal matrix (for overlap values)
2838    o tools/build_options:
2839      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
2840        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
2841      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
2842        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
2843        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
2844        and use "-devel" testreport option for standard testing on baudelaire.
2845    o pkg/grdchk:
2846      - Assume that all gradient-check position are within the same tile
2847        corresponding to global indices (iGloTile,jGloTile) and that
2848        positions (i,j indices or nbeg) are local to this tile;
2849      - set tile local-indices and proc. number according to tile global-indices;
2850      - remove grdchkwhichproc from namelist (retired param);
2851      - send adjoint gradient to all procs so that all procs print it to STDOUT;
2852      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
2853    o adding package bbl (Bottom Boundary Layer)
2854      description in MITgcm/pkg/bbl/bbl_description.tex
2855      example/test experiment in MITgcm_contrib/bbl
2856    o adjoint verifications
2857      - changed 5 experiments to multi-tiles
2858        * global_ocean.90x40x15
2859        * obcs_ctrl
2860        * offline_exf_seaice
2861        * tutorial_dic_adjoffline
2862        * tutorial_tracer_adjsens
2863        changed reference output for those that crossed tile boundaries
2864        (changed choices of gradient check positions)
2865      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
2866      - temporary bug fix in grdchk_loc.F for obcs
2867    o genmake2 & testreport
2868      - add target "obj" (just for OBJFILES files) to Makefile;
2869      - add option to specify FEXTRAFLAGS on command line.
2870    o pkg/mypackage:
2871      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
2872    
2873    checkpoint63a (2011/08/02)
2874    o pkg/diagnostics (velocity potential):
2875      - fix velocity-potential calculation when using OBCS: balance net inflow
2876        at each level (new S/R OBCS_DIAG_BALANCE).
2877      - fix some of the problems with OBCS in stream-function calculation.
2878    o pkg/exf/exf_readparms.F
2879      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
2880        EXF_NML_OBCS) more consistent, so that you need not have these lists
2881        in data.exf when they are not used.
2882    o optim/optim_readdata.F:
2883      - add some output about obcs variables that might help debugging
2884      - add a check about nvarlength
2885    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
2886    o pkg/diagnostics (velocity potential):
2887      - fix mask for OBCS (still problems in stream-function with OBCS);
2888      - add specific parameter (default = main code CG2D params) for solver;
2889      - in case of poor convergence, use solution corresponding to lowest residual.
2890    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
2891      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
2892      and should be avoided where possible.
2893    o model/src (rStar):
2894      - include r* effect on reference-state (PhiRef) in totPhiHyd
2895        (so that it's really the potential anomaly at the cell center);
2896        affect solution only if z* with full pressure in EOS.
2897      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
2898        update output (because of z* in totPhiHyd and viscA4 changes);
2899      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
2900        @ constant r) until interpolation at constant r is implemented.
2901    o pkg/diagnostics
2902      - fix RCENTER diagnostics in case cell center is not at interface middle
2903    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
2904      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
2905      that THETA and SALT are "conservative temperature" and "absolute
2906      salinity"
2907    o pkg/ctrl
2908      - fix computation of endrec in s/r ctrl_init_rec
2909      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
2910    o pkg/seaice/seaice_growth.F
2911      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
2912        remove then obsolete STORE directives
2913      - fix STORE directives for tice and tices, so that only the
2914        appropriate part of the fields are stored (and not the entire
2915        field); update global_ocean.cs32x15.seaice AD output.
2916      - cosmetic changes: adjust CPP flags and indentation for better
2917        legibilty
2918    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
2919      Chris Wilson)
2920    o pkg/gmredi:
2921       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
2922       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
2923    
2924    checkpoint63  (2011/07/11)
2925    o pkg/exch2:
2926     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
2927     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
2928       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
2929       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
2930    o pkg/diagnostics:
2931     - deal with pairs of post-processed diags which are computed together; in
2932       particular, re-order list of diags within 1 file to save 2nd computation.
2933     - add S/R to compute velocity stream-function (called after velocity-potential
2934       calculation) from divergence free transport -> new diagnostics "PsiVEL".
2935     - add parameter to select grid-point location where PsiVEL == 0.
2936    o eesupp/src:
2937       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
2938       (specific S/R needed with exch2 topology - for now, just print an error msg)
2939    o pkg/shelfice
2940     - Implement friction velocity-dependent transfer coefficients following
2941       Holland and Jenkins, JPO, 1999
2942       Original code by M. Losch with small modifs.
2943       Enable with CPP option SHI_ALLOW_GAMMAFRICT
2944       and runtime flag SHELFICEuseGammaFrict
2945    o verification lab_sea & global_ocean.cs32x15:
2946     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
2947       does not miss some dependencies (but is slower) and also works with many files
2948       (default makedepend limitation for AD built).
2949     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
2950    o pkg/diagnostics:
2951     - add run-time parameter "useMissingValue" (def=False) to fill land-point
2952        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
2953       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
2954     - Extend the use of "missing_value" setting from data.diagnostics for the case
2955       of counter-diagnostics (where fraction-weight is zero). This applies both to
2956       MNC and MDS output files.
2957    o pkg/seaice/seaice_growth.F:
2958      - add 'a priori' cap of latent heat flux based on actual mass considerations
2959        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
2960        non-legacy seaice_solve4temp.
2961      - add diagnostic of the residual sublimation freshwater flux (the freshwater
2962        flux taken from the ocean if the total actual latent heat fluxes exceed
2963        the maximum)
2964      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
2965       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
2966      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
2967       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
2968      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
2969      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
2970    o verification 1D_ocean_ice_column:
2971       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
2972       update results
2973    o pkg/diagnostics:
2974     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
2975       which are not filled-up but computed from other diags ; In this case, the mate
2976       diag points to the primary (filled-up) diag to used for post processing.
2977     - Update Velocity-potential computation using post-processed diag framework.
2978     ==> Change the ordering of fields and time-periods in MDS output file
2979       when using periodic averaging: now writes one time record with the full set
2980       of fields for this time period, then the next time reccord (it used to be
2981       one field with the full set of time records then the next field).
2982         Note: this is now similar to NetCDF (MNC) output file. <==
2983    
2984    checkpoint62z (2011/06/21)
2985    o adjoint monitor:
2986     - Add adjoint monitor output for packages exf, seaice
2987       and update relevant testreport output
2988    o pkg/seaice:
2989     - re-order diags inits so that they appear in order in available_diagnostics.log
2990     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
2991       area/heff/hsnow preceeding thermodynamic growth/melt.
2992     - modified diag: SIdA; output actual effect, as the description states.
2993     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
2994     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
2995       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
2996        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
2997     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
2998     - added diagnostics for seaice generic tracers (SItr*).
2999     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
3000     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
3001     I. Fenty: 18-Jun-2011:
3002     Minor changes to seaice package:
3003     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
3004        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
3005       - Differentiated "regularization variables" from "floor variables"
3006        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
3007        * hiceMin became SEAICE_hice_reg (old hiceMin)
3008          (with _reg meaning regularization variable)
3009       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
3010        so as to ensure energy conservation when going between phases
3011      - A22 was not used anywhere
3012     2) Changed regularization procedure for heffActual and hsnowActual to ensure
3013        well-boundedness and smooth adjoint in seaice_growth.F
3014     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
3015        because the old regularization always set heffActual >= 0.05 cm
3016     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
3017        on AREA when HEFF > 0.
3018      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
3019        requiring that DISABLE_AREA_FLOOR *not* be defined
3020     Affected verifications:
3021      - 1D_ocean_ice_column (output.txt output_adm.txt)
3022      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
3023    o pkg/diagnostics:
3024      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
3025      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
3026        (was _RL, now integer) with option = 0 to retrieve all levels.
3027      - add pieces of code to compute velocity potential at each level (new diagnostics
3028        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
3029        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
3030      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
3031        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
3032        and in diagnostics_fract_fill.F (do not need a valid pointer for the
3033        diagnostics counter-mate); check that definition of counter-diagnostic
3034        includes a valid counter-mate (in diagnostics_set_levels.F).
3035    o model/src (rStar):
3036      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
3037        affect solution only if z* with full pressure in EOS;
3038        update output of test-exp global_ocean.90x40x15.
3039    o pkg/seaice:
3040      - introduce siEps=1e-5 parameter
3041      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
3042      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
3043      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
3044        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
3045        as well as ice cover age and ridging index (attached to AREA).
3046        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
3047        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
3048        Up to SItrMaxNum=3 tracers can be used simultaneously.
3049    o pkg/salt_plume:
3050      -introduce SPsalFRAC run time parameter that sets the fraction of the
3051       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
3052       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
3053    o model debug options:
3054      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
3055        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
3056      - Refine debug-msg printing selection (3 new levels):
3057        debugMode  : controls printing of debug messages (sequence of S/R calls).
3058        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
3059         debLevZero =  0 ; /* level of disabled aux. msg printing */
3060         debLevA =  1 ; /* level of minimum  aux. msg printing */
3061         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
3062         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
3063         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
3064         debLevE =  5 ; /* level of extensive debug printing */
3065        New debugLevel default: with default debugMode value (=F),
3066          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
3067          and if debugMode=T, default debugLevel = 4 (debLevD).
3068        Relation with previous settings:
3069         debLevB (=2) corresponds to former debLevA (=1)
3070         debLevD (=4) corresponds to former debLevB (=2)
3071        Note:
3072         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
3073         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
3074            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
3075      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
3076        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
3077    o pkg/obcs:
3078      - change OBCSfixTopo default from True to False (should not change the results);
3079        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
3080    o pkg/thsice:
3081      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
3082        2nd layer seaice sublimation (unlikely to happen)
3083      - use Interior mask for OBCS in thsice_advection.F (similar to what is
3084        done in gad_advection & seaice_advection).
3085    o adjoint:
3086      bug fix spotted by Gael Forget:
3087      seaice_advection and thsice_advection still had
3088      legacy CPP options to avoid CS corner updates for adjoint
3089    o pkg/seaice:
3090      => Change some of the defaults (2011/05/29):
3091         - change SEAICEuseFluxForm default (from False to True)
3092         - change DIFF1 default (from 0.004 m/s to 0. m/s)
3093         And print warnings if DIFF1 is not set in data.seaice and centered
3094          avection scheme is used without any diffusion.
3095      also:
3096      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
3097      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
3098      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
3099        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
3100        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
3101      update results of test exp.:
3102         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
3103             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
3104             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
3105         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
3106         seaice_obcs: output (SEAICEuseFluxForm=T)
3107      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
3108          for standard fwd & AD lab_sea tests (to keep the same output).
3109    o pkg/seaice/seaice_growth.F:
3110      - use Ian Fenty's capping formulas for actual ice
3111      thickness thoughout EVOLUTION branch.
3112      - put treatment pathological case #2) in CPP brackets
3113      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
3114      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
3115    o pkg/seaice:
3116      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
3117      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
3118      also pass fac as a param, which can be 1. (to update the tendency
3119      field) or the time step (to update the field itself).
3120      - seaice_advdiff.F: for multidim, call seaice_diffusion with
3121      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
3122      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
3123      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
3124      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
3125    o pkg/seaice:
3126      diffusion with centered advection scheme (diffus.F & advect.F):
3127      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
3128        to just compute the laplacian of input-field.
3129      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
3130      - fix flux-form version in diffus.F to conserve tracer.
3131      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
3132       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
3133    
3134    checkpoint62y (2011/05/26)
3135    o pkg/seaice:
3136     - seaice_growth.F : in EVOLUTION branch, always include
3137       a_QSWbyATM_cover in qnet (as it should be).
3138     - verification/global_ocean.cs32x15 : update results accordingly
3139       (output.seaice.txt output_adm.seaice.txt).
3140    o pkg/seaice + obcs:
3141     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
3142       equivalent of assuming no tracer gradient outside the OB region.
3143       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
3144     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
3145       after changes above);
3146     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
3147       only at OB location (instead of over a band of OLx width).
3148    o pkg/seaice:
3149     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
3150       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
3151    o pkg/obcs:
3152      - split header file "OBCS.h" into 4 separated files:
3153        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
3154       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
3155         (contain no conditional statement which depends on OBCS options).
3156      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
3157        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
3158    o ctrl, cost, grdchk & autodiff pkgs:
3159      - make options file more standard (like other {PKG}_OPTIONS.h file but
3160        with AD_CONFIG.h); clean-up some of the included header files.
3161    o pkg/obcs:
3162      - do not mask tracer when applying OB (tracer == 0 could generate problems)
3163      - apply tracer OB values to tracer field only at OB location (instead of
3164        over a band of OLx width)
3165      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
3166      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
3167        obcs_apply_tloc.F & obcs_apply_sloc.F
3168    o obcs in model/src:
3169      - call OBCS_APPLY_W only if NonHydrostatic.
3170      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
3171      - reset dEtaHdt and wVel to zero outside OB interior region ;
3172      - leave tracer unchanged outside OB interior region: This has no effect
3173        on the solution but just to prevent unrealistic tracer value outside OB.
3174      - zero out velocity outside OB interior region: This has no effect on
3175        the solution but just to prevent unrealistic velocity outside OB.
3176    o obcs and non-lin free-surf:
3177       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
3178       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
3179       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
3180       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
3181       update results of test-exp. exp4(nlfs).
3182    o exp4 (nlfs) test-exp:
3183       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
3184       with NonLin-FreeSurf); update output.nlfs.txt
3185    o obcs and 2d/3d solver norm:
3186       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
3187       and outside OB interior region (will allow to place OB further inside the
3188       domain). Depending on the domain, can affects cg2d-Norm (previous
3189       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
3190       and cg3d-Norm (previous Norm was computed before canceling OB terms),
3191       e.g. in tutorial_plume_on_slope.
3192      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
3193    o pkg rbcs:
3194      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
3195      - add capability to apply relaxation to horizontal velocity uVel & vVel.
3196    o pkg/grdchk: add gradient check for control variable xx_shifwflx
3197    o pkg/shelfice/shelfice_init_fixed.F
3198      fix CPP-flag combinations
3199    o pkg/seaice: Merge iceage code of Pierre Rampal
3200      * update/change/correct ice age calculations
3201      * add age updates for pathological cases
3202      Probably needs more testing...
3203    
3204    checkpoint62x (2011/05/13)
3205    o pkg/mom_vecinv:
3206       high-order vorticity scheme: use interior masks (maskInW & S)
3207       to zero-out (outside OB) gradient of vorticity.
3208    o verification exp.:
3209       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
3210       hs94.128x64x5 and seaice_obcs ; update results.
3211    o pkg/obcs:
3212      fix bug in OBeta for YZ sections in obcs_exf_load.F
3213    o pkg/ctrl, pkg/shelfice, and optim:
3214      - add new control variable xx_shifwflx (fresh water flux underneath ice
3215        shelves). This is almost as tedious as obcs-ctrl, because the
3216        variables needs its own mask.
3217      - add a cost function term that penalizes the deviation of xx_shifwflx
3218        from the first guess (zero) in analogy to other control variables
3219    o pkg/shelfice:
3220      - start basic adjoint
3221    o pkg/ctrl:
3222      - remove extra 2D field "for good measure" when initializing in
3223        ctrl_set_globfld_[xy/xz/yz].F
3224      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
3225      - improve error messages in ctrl_set_unpack_*
3226    o OBC implementation in momentum:
3227       use interior masks (maskInC,W & S) in momentum S/R:
3228       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
3229       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
3230       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
3231       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
3232       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
3233        (and also with Leith/Smagorinsky harmonic-viscosity).
3234       Update output of experiment dome and exp4 (+nlfs).
3235    o exp4 test-exp:
3236      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
3237        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
3238        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
3239        time-varying OB at Western-side for wVel (NonHyd); update output.
3240      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
3241        and biharmonic-viscosity ; also use prescribed time varying OB.
3242    o pkg/obcs:
3243      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
3244    o model/src:
3245      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
3246      - initialise startTime & nIter0 with unlikely values: allows to set one
3247        from the other without ambiguity.
3248    o seaice_obcs test-exp.:
3249      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
3250    o pkg/obcs:
3251      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
3252        no longer needed with maskInC,W,S in pkg/generic_advdiff.
3253    o pkg/seaice:
3254      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
3255        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
3256      - fixed bug in the initialization of sea ice salinity variable HSALT
3257        in seaice_init_varia.F  (removed dependence on ICE2WATR)
3258    o fizhi-cs test exp.:
3259       switch reference output convention for these 2 non-standard test-exp,
3260        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
3261          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
3262       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
3263    o model/inc:
3264      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
3265        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
3266    o pkg/seaice:
3267      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
3268    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
3269      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
3270        and initial HSALT
3271    
3272    checkpoint62w (2011/04/26)
3273    o pkg/mom_fluxform:
3274      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
3275      - use parameter "sideDragFactor" in no-slip BC side-drag part.
3276      - update output of exp. global_ocean.90x40x15
3277    o pkg/mom_vecinv:
3278      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
3279    o update seaice exp.:
3280      use more consistent parameter values (remove "backward compatability only":
3281       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
3282      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
3283       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
3284    o update test-exp global_ocean.90x40x15:
3285      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
3286      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
3287      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
3288      o turn on zStar & viscA4 in standard set-up (dir input/)
3289        and update output files: output.txt & output.dwnslp.txt
3290    o new AD-test experiment: obcs_ctrl
3291      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
3292    o pkg/dic:
3293      fix two bugs in handling water vapour pressure in carbonate chemistry
3294      and air-sea fluxes. Found by Val Bennington and Galen McKinley
3295      (add DIC Option = WATERVAP_BUG to recover old results)
3296      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
3297    o adding allowInteriorFreezing option to check for water below freezing point
3298      at depth and bring the negative heat anomaly to the surface level
3299    o pkgs _fields_load:
3300      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
3301      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
3302        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
3303        rbcs to get interpolation weights and time reccord number.
3304      - fix multi-threading in aim_fields_load.F
3305      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
3306    o external_fields_load:
3307      new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
3308       interpolation weights) to use in a periodic time-series ; do not divide by
3309       time-step to convert to integer:
3310       - this fixes case where externForcingPeriod is not multiple of time-step
3311          (Thanks to Christopher L. Wolfe)
3312       - this fixes case where externForcingPeriod is an odd multiple of time-step
3313         (was wrong by half of time-step); update results of tutorial_global_oce_in_p.
3314      store index of time-record which is currently loaded:
3315       - works without any assumption on sequence of calls to EXTERNAL_FIELDS_LOAD ;
3316       - needed for the adjoint but not yet used because of extensive recomputations;
3317         (to be fixed soon)
3318    
3319    checkpoint62v (2011/04/02)
3320    o verification/1D_ocean_ice_column added to test Ian Fenty's
3321      pkg/seaice_growth.F modifications for improving sea ice code differentiability
3322    o update output of exp4, internal_wave, seaice_obcs, tutorial_plume_on_slope
3323      (new velocity statistics after changing maskInW & maskInS definition)
3324    o pkg/generic_advdiff with OBCS:
3325      use maksInW & maskInS in advective flux and in biharmonic diffusion calculation:
3326      equivalent to assumption of no tracer gradient outside the OB region.
3327      This will affect the results if using obcs+biharmonic diffusion.
3328      update output_adm.txt of experiment bottom_ctrl_5x5 (not expected since no obc)
3329    o pkg/obcs:
3330      change definition of maskInW & maskInS: leave OB edges inside (maskIn=1)
3331      (e.g., maskInW(OB_Ie)=1 ) so that velocity normal-component at OB is still
3332      in Interior region. No impact on solution but affects Velocity monitor stats.
3333    o pkg/ptracers (adjoint)
3334      New option AUTODIFF_PTRACERS_SPLIT_FILES for writing separate
3335      tape file for each tracer
3336    o model/inc/src and pkg/autodiff: add parameters that allow to turn
3337      of parts of the adjoint code at run time. For now, there are only
3338      useKPPinAdMode, useGMrediInAdMode, and useSEAICEinAdMode. These
3339      parameters are set in data.pkg.
3340      This is the lazy coward's version of doing this, but still useful for
3341      debugging. In order to do it right, everything needs to be moved to
3342      pkg/autodiff.
3343    o pkg/autodiff: fix global_sum_tile_ad.F by resetting adsumPhi at
3344      the end; this fixes the adjoint balancing code for open boundaries.
3345    o pkg/ctrl:
3346      - change behavior of xx_${varname}period to be analogous to exf-conventions:
3347        xx_${varname}period =   0.,  means time-independent control part
3348        xx_${varname}period = -12., means one-year-periodic monthly control part
3349      - introduce helper routine ctrl_init_rec (part of ctrl_init.F) to
3350        clean up ctrl_init a little, remove unused variables
3351      - ctrl_init: fixed the handling of the start/endrec for obcs-variables
3352      - move "call cal_GetMonthsRec" from s/r ctrl_get_gen to s/r ctrl_get_gen_rec
3353    
3354    checkpoint62u (2011/03/15)
3355    o model/src:
3356      - for the adjoint, change NonLin-FreeSurf initialisation sequence: fill-in
3357        h0Fac from INITIALISE_FIXED and reset hFac to h0Fac in INITIALISE_VARIA ;
3358      - in initialise_varia.F (except for ALLOW_DEPTH_CONTROL) remove 2nd call to
3359        INI_DEPTHS, INI_MASKS_ETC & INI_LINEAR_PHISURF.
3360    o pkg/ctrl/obcs/ecco:
3361      - remove obsolete, unused, and partially broken code:
3362        ctrl_obcsvol/ctrl_obcsbal/ctrl_volflux and code within
3363        ALLOW_CTRL_OBCS_BALANCE
3364      - put a stop statement into ecco/cost_obcsvol.F, but also add
3365        cost_obcsvol to ecco_ad_diff.list
3366    o pkg/ecco: fix counting cost function contributions for obcs (code
3367      by Matt M.) and diffkr for diagnostics
3368    o pkg/ecco, pkg/ctrl, pkg/grdchk:
3369      add cost penalty terms for initial uvel, vvel, eta controls
3370      and I/O for prior error files
3371    o pkg/mdsio:
3372       move mds_check4file.F from eesupp/src to mdsio_check4file.F ; add option
3373       (new argument) to check for tiled file in mdsioLocalDir : this fix the
3374       restart from pickup_som , pickup_dic (& dic_co2atm) with mdsioLocalDir.
3375    o pkg/ctrl:
3376     - ctrl_obcsbal.F, ctrl_obcsvol.F: replace last calls of ctrl_getrec by
3377       ctrl_get_gen_rec, put a stop statement into ctrl_getrec. Remove
3378       unused and superfluous variables
3379     - ctrl_get_gen_rec.F: catch the case of xx_genperiod=0.
3380    o pkg/ecco
3381     - enable adjoint of Stevens OB
3382    o pkg/ctrl/ecco/grdchk:
3383      - remove global declaration of tmpfldx/yz and tmpfldx/yz2.
3384        Fortunately, we do not have any tests for the numerous cpp-flagged
3385        option of "obcs as control parameters" so we will never know
3386        if this is an improvement (but at least now things compile).
3387      - remove an obsolete initialization from ecco_cost_init_barfiles.F
3388      - fix some problems within never used ifdefs to make the code compile
3389    o pkg/obcs:
3390     - Refine Interior mask definition to work with more complex OB (e.g.
3391       if OB_Ie < OB_Iw); In case default setting is not sufficient, allows to
3392       read in Interior mask from file. Check if Interior mask is consistent
3393       with OB list of indices.
3394    o pkg/seaice
3395     - beginning code for a seaice tracer package,
3396       but currently only used for seaice age: SEAICE_AGE
3397       SEAICE_num = 4
3398       iTracer = 1: area-weighted ice age
3399               = 2: volume-weighted ice age
3400               = 3, 4: template for one-year vs. multi-year ice
3401       data.seaice has new namelist SEAICE_PARM03 for arrays related to
3402       SEAICE_num
3403    
3404    checkpoint62t (2011/03/05)
3405    o pkg/obcs:
3406     - obcs_apply_uv.F: change to a 2 steps method, first tangential component;
3407       then normal component. This ensures that the normal component is set
3408       correctly even when it conficts with tangential setting from an other OB.
3409       Affects results of test-experiment seaice_obcs: update the output.txt
3410    o pkg/obcs:
3411     - add code to monitor statistics of dynamical fields at OB.
3412     - take OBCS_BALANCE code out of obcs_calc.F into new S/R OBCS_BALANCE_FLOW :
3413       - fix to OBCS_BALANCE code (right hFac ; deal with simple OB intersection).
3414       - change default: balance the Net inflow through all OB (instead of balancing
3415         each OB separately); keep the old method if setting OBC_balanceFacX < 0.
3416     - switch on useOBCSbalance in dome experiment: only correct Western OB outflow
3417       to match Nortern OB inflow (OBCS_balanceFacN=0).
3418    o pkg/seaice:
3419     - redefined actual sea ice age to be ICEAGE/HEFF ifdef SEAICE_AGE_VOL
3420    o pkg/seaice (seaice_growth v 1.113):
3421     - reverting seaice_growth to v 1.111 in order to have code with exact bit
3422       compatibility with MITgcm_contrib/ifenty/Fenty_seaice_thermo_code_merge
3423       CPP option SEAICE_OCN_MELT_ACT_ON_AREA removed in v 1.112 is reintroduced
3424       runtime flag SEAICEareaFormula is kept but is inactive
3425    o model/src:
3426     - add new param to scale curvilinear grid distance and area when using
3427       a different sphere radius from the grid-files.
3428     - test/check multi-threads EXCH applied to local variable (cg2d_x)
3429    o adjoint:
3430     - enable adjoint of Stevens OB
3431     - add dummy_in_dynamics to enable extraction of ADJrhoinsitu
3432       (a bit delicate because of potentially modified adj. common block structure;
3433       current switch is ALLOW_AUTODIFF_MONITOR_DIAG, could be changed later)
3434    
3435    checkpoint62s (2011/02/15)
3436    o pkg/seaice (seaice_growth v 1.112):
3437     - introduce SEAICEareaFormula run time parameter, which selects the recipe for
3438       computing the ice cover tendency from effective thickness tendencies. Include
3439       Ian Fenty's formula.
3440     - remove 'undef SEAICE_OCN_MELT_ACT_ON_AREA' which may now be achieved using
3441       SEAICEareaFormula.
3442     - simplify notations for the various d_HEFF/d_AREA terms.
3443    o pkg/gmredi:
3444     - add Boundary-Value-Problem bolus transport (Ferrari etal, OM 2010) code
3445       from Christopher Wolfe (UCSD); add partial cell factor in vertical derivative;
3446       add a verification test-run (front_relax.bvp) to test GM_useBVP.
3447    o pkg/seaice (seaice_growth v 1.111):
3448     - for SEAICE_DO_OPEN_WATER_GROWTH, replace Gael's implementation with Ian's.
3449     - the new SEAICE_DO_OPEN_WATER_MELT allows open-water air-sea heat fluxes to
3450       also melt ice.
3451    o pkg/seaice:
3452     - McPhee formula for Ice-Ocean fluxes (provided by Ian Fenty).
3453     - can be used by #define MCPHEE_OCEAN_ICE_HEAT_FLUX in SEAICE_OPTIONS.h
3454    o pkg/cheapaml:
3455     - from Nico Wienders: New version of this package.
3456    o pkg/flt:
3457     - add CPP options to prevent floats to re-enter the opposite side of
3458       a periodic domain (default: keep periodicity)
3459    o pkg/gmredi:
3460     - apply exchange to GM_PsiX,GM_PsiY to get valid values near CS-corners
3461       (needed for multi-dim advection).
3462     - switch on GM Advective form in global_ocean.cs32x15 and update output.txt
3463    o model/src:
3464     - fix wrong re-setting of addMass array (ALLOW_ADDFLUID) for atmospheric run.
3465    o tutorial_tracer_adjsens
3466     - extend to NLFS and replace maskC by hFacC
3467       (change reference output accordingly)
3468    
3469    checkpoint62r (2011/01/24)
3470    o testreport:
3471     - add option -deloutp (-do) to remove output file after successful run
3472     - add option -mfile (-mf) for MPI machile-file and for each test-exp,
3473       extract exact list of procs from this file ; adjust COMMAND by
3474       replacing TR_MFILE & TR_NPROC with local machile-file & Nb of MPI procs.
3475    o pkg/ecco: replace old ineffective way of penalizing deviations from
3476      first guess (of obcs) with code by Matt Mazloff
3477    o pkg/ctrl: add code that allows the use of ALLOW_OBCS?_CONTROL without
3478      exf/cal
3479      - ctrl_init: fix initialisation (computation of diffrec) for obcs-ctrl
3480        and handle case of obcs?period == 0
3481        Not affected by these changes: There is still an inconsistency in
3482        the computation of start/endrec for the obcs variables for ALLOW_CAL
3483        defined (see comment by Menemenlis, 7-Mar-2003)
3484      - make S/R ctrl_get_gen_rec return something meaningful even if
3485        ALLOW_CAL is not defined
3486      - ctrl_getobcs?: simplify code so that it does not need to use
3487                       S/R exf_swapfields
3488    o testreport:
3489       allow to test MPI with different number of processors for each experiment:
3490       create file "SIZE.h.mpi" in each build dir.
3491       Note: update of "-command" argument not yet implemented.
3492    o model/src, pkg/autodiff, pkg/ecco, pkg/seaice:
3493      alleviate the need for additional 3D tapes when using
3494      the non-inear free surface in the adjoint. This is done
3495      by adding an 'update' of hfacc etc. to their current
3496      value at the beginning of forward_step.F.
3497    o pkg/seaice
3498      seaice_lsr: move stress-divergence computations out of outer pseudo-
3499      timestepping loop
3500    o pkg/obcs/obcs_prescribe_read.F: move 'CALL OBCS_EXTERNAL_FIELDS_LOAD'
3501      up, so that the calls of the ctrl_* subroutines are really at the end
3502      of the routine.
3503    o pkg/gmredi:
3504      allow to specify a 2-D horizontal map and a 1-D vertical profil
3505      as scaling factor for Isopycnal diffusivity (Redi) and GM diffusivity.
3506    o pkg/seaice:
3507      move lsr iterations from seaice_dynsolver to seaice_lsr.
3508    o pkg/seaice:
3509      reduce memory footprint of seaice mutldim advection tapes,
3510      by using a 2D tape independent of the generic_advdiff ones,
3511      and setting GAD_AREA=1 etc. rather than GAD_AREA=101 etc.
3512    
3513    checkpoint62q (2010/12/29)
3514    o model/src:
3515      - check horizontal grid-spacing for unset or zero/negative values.
3516      - change AD test hs94.1x64x5 to be truly a 2-D set-up.
3517    o pkg/flt:
3518      - use (recent) mdsio S/R MDS_READVEC_LOC instead of local FLT_MDSREADVECTOR
3519      - precision of input and output files set according to readBinaryPrec
3520        and writeBinaryPrec (previously always 64.b), pickup remains at 64 bits.
3521      - initial float position from tiled file was not converted to index space
3522        (looks like a bug): fixed to make it similar to initial pos. global file.
3523    o global_ocean.cs32x15:
3524       change SIZE.h of AD set-up to get same tiling as with MPI.
3525       Update output_adm, output_adm.thsice (pass@14) & output_adm.seaice (fail@11)
3526    o model/src:
3527       add flag to control printing of domain fields (bathymetry, hFac ...) in
3528       ini_mask_etc (call to plot_fieds_xy*).
3529    o pkg/thsice:
3530       if useEXF, some forcing fields are not valid in overlap: fixed by computing
3531       over the interior only + apply EXCH at the end (like with SEAICE advection).
3532    o pkg/mdsio:
3533      - add 2 arguments to S/R MDS_PASS_R4/8toRL/S for overlap size of buffer
3534        to copy to/from, so that it can be used to replace MDS_PASS_WH_R8toRL/RS.
3535      - change barrier call for safe multi-threads access to 3-D shared buffer.
3536      - MDS_READ/WRITEVEC_LOC use buffers from MDSIO_BUFF_3D.h (instead of local ones)
3537      - replace call to MDS_PASS_WH_R4/8toRL with call to MDS_PASS_R4/8toRL and
3538        remove the 4 S/R MDS_PASS_WH_R4/8toRL/S.
3539    o pkg/flt:
3540      - add fourth-order Runge-Kutta integration
3541      - add basic exch2 support (only 1 facet supported so far!)
3542    o pkg/mdsio+rw:
3543      new S/R to read local (or tile independent) vector (read counterpart of
3544       mds_writevec_loc, and front-end write_glvec_rl/rs).
3545    o global_ocean.cs32x15: additional input_ad.seaice experiment
3546        that uses pkg/seaice rather than pkg/thsice.
3547        (using multidim advection for seaice)
3548    o towards more F95 syntax for array specification in namelist:
3549      - change "data.diagnostics" (data.ptracers was changed before checkpoint62p)
3550        of all verification experiments.
3551           e.g.:    line: fields(1,3)='ETAN    ','ETANSQ  ',
3552          was changed to: fields(1:2,3)='ETAN    ','ETANSQ  ',
3553      - finish adding "-DNML_EXTENDED_F77" to DEFINES list in pgf77 and g77 optfiles
3554    o global_ocean.cs32x15: additional input.seaice experiment
3555        that uses pkg/seaice rather than pkg/thsice.
3556    
3557    checkpoint62p (2010/12/17)
3558    o pkg/thsice: rename (ad tape index) iicekey as ticekey, and move it
3559        to THSICE_SIZE.h to avoid conflict with pkg/seaice.
3560    o pkg/seaice: add seaice_diffusion.f seaice_map_thsice.f to adjoint.
3561        allow for use of multim. advection in seaice adjoint.
3562    o pkg/seaice: add diagnostics for snow precipitation and sublimation flux
3563      - first attempt to close budgets by taking into account the freshwater
3564        flux implied by the sublimation of snow and ice. So far only the
3565        volume budget is closed, turn on with soon-to-be-retired-again CPP-Flag
3566        SEAICE_ADD_SUBLIMATION_TO_FWBUDGET
3567    o eesupp/src:
3568      new S/R with new option (NML_EXTENDED_F77) to change array specification
3569      from F95 standard to commonly accepted extended F77 form.
3570      This would allow to use F95 syntax in namelist (needed with gfortran 4.4.5)
3571      and to revert back to the original syntax (with -DNML_EXTENDED_F77)
3572      for less tolerant f77 compiler (e.g., pgf77, g77).
3573    o globalFiles:
3574      commented out in parameter file "data" since it's not safe with MPI
3575      (e.g., wrong on aces); keep it if useSingleCpuIO=T (but not doing much
3576      in this case); no longer commented out in restart test (tst_2+2).
3577    o add adTapeDir to specify a special directory where adjoint tapes are
3578      written/read (adread_adwrite.F). adTapeDir is specified in data/PARM05
3579      and cannot be used together with mdsioLocalDir.
3580    o nesting pkgs:
3581      - packages_init_variables : put call to OBCS_INIT_VARIABLES in last position
3582      - update Gianmaria's Nesting pkgs (from Contrib/nesting_sannino)
3583      - add parameter files + utils dir + output from short run on beagle.
3584    o pkg/seaice:
3585        fix seaice_growth.F store directives; update results of exp. lab_sea.ad
3586    o pkg/seaice: explicitly store tsurfloc in seaice_solve4temp.F to avoid
3587      unnecessary copying in adjoint code, requires new parameter NMAX_ITER
3588    
3589    checkpoint62o (2010/11/25)
3590    o pkg/exf:
3591      - change CPP option EXF_VERBOSE to run-time logical param exf_verbose.
3592    o pkg/seaice:
3593      - seaice_ocean_stress: split a loop for better vectorization of the
3594        adjoint code
3595      - seaice_growth.F: fix bug in conservation of freshwater connected to
3596        capping of heff, put contribution into d_HEFFbyNEG
3597      - replace irritating parameters SEAICE_latentWater/Ice and SEAICE_sensHeat
3598        by something more sensible (parameters that are what their name implies)
3599      - change some defaults, so that by default exf-parameters are used for
3600        things like rhoAir, cpAir,latent/sensible heat parameters, in order
3601        to reproduce the old results, many data.seaice now contain funny values
3602        for cpAir and latent heat of sublimation
3603    o packages_readparms.F: move exf_readparms up in line so that
3604        exf-parameters are visible for other packages (e.g. seaice)
3605    o debugMode & debugLevel=2:
3606      - differentiate between debugMode & debugLevel=2:
3607        debugMode: controls printing of debug messages (sequence of S/R calls).
3608        debugLevel: controls printing of algorithm intermediate results and stats.
3609      - remove "if debugLevel=2 => debugMode" but keep "debugMode =>  debugLevel=2";
3610        => allows to print debug-stats without all sequence of call messages.
3611      - switch control of debug print from debugLevel to debugMode in many S/R.
3612    o pkg/obcs (obcs-sponge):
3613        fix bug that was introduced on Oct 25 (in dynamics.F v1.151): put back the
3614        call to OBCS_PRESCRIBE_EXCHANGES (need to exch gU,gV when using obcs-sponge)
3615    o pkg/generic_advdiff:
3616      - record overlap minimum size for each advection scheme;
3617      - refine criteria on overlap minimum size;
3618      - check and stop (in gad_check) if overlap size is too small.
3619    o pkg/obcs:
3620      - with ptracers: remove multiple calls to obcs_apply_ptracer (only done
3621        once, in ptracers_implicit.F)
3622      - with seaice: remove test on empty file name in obcs_apply_seaice (always
3623        apply OB values when tile has OB)
3624    o model/src, coriolis setting:
3625      - integer parameter "selectCoriMap" (=0,1,2) replaces 3 logical
3626        useConstantF, useBetaPlaneF, useSphereF ; can now read coriolis from
3627        files (selectCoriMap=3) with any grid.
3628      - add parameter "fPrime" for constant second Coriolis coeff (default=0).
3629    o pkg/seaice/seaice_growth.F:
3630        a few cosmetic changes that reduce the number of lines of code
3631    o pkg/obcs: add boundary conditions following Stevens (1990)
3632      - the code follows old MOM/NAOSIM code
3633      - so far it is only implemented for the eastern and western boundaries
3634        and NOT for pTracers
3635    o pkg/rbcs:
3636      - replace rbcsInIter by rbcsForcingOffset, the time in seconds at the
3637        beginning of the first rbcs forcing period.
3638      - add option rbcsSingleTimeFiles that makes rbcs read forcing data like the
3639        offline package, i.e., one file per time, labeled by iteration number;
3640        deltaTrbcs sets the timestep with which the data was generated;
3641        rbcsIter0 is the forcing iteration corresponding to rbcsForcingOffset.
3642      - rbcsForcingCycle=0 makes forcing non-cyclic.
3643      - make arithmetic safe for negative times and odd forcing periods.
3644    
3645    checkpoint62n (2010/11/09)
3646    o pkg/seaice:
3647        fix masking in free-drift S/R ; update results of exp. lab_sea.fd
3648    o pkg/obcs:
3649       New S/R to copy tracer value from the OB location to narrow band region
3650        (width = same as overlap) beyond the OB: preserve OB value (needed for
3651        high-order scheme) which were overwritten by EXCH call if in overlap
3652        region. Applied to theta, salt, ptracer and advected seaice variables.
3653       With seaice: use maskInC in similar way as in gad_advection.F,
3654        in seaice_advection.F and advect.F.
3655       Update output of experiment seaice_obcs and change exp4 to test OBCS with
3656        4th order Adv.Scheme. for pasive salt and ptracer.
3657    o tools/genmake2:
3658      - when looking for an optfile (not specified), only search for Fortran compiler
3659        (remove sym-link test + setting of CPP + makedepend check + C-compiler check)
3660      - in get_fortran_c_namemangling: use "$CC $CFLAG" to compile C test programm
3661        (instead of "$MAKE genmake_test.o" since an existing Makefile can be wrong)
3662      - set default for CPP to "cpp -traditional -P" (was the case without specifying
3663        an optfile, but otherwise default was just "cpp".
3664      - comment out PLATFORM=$p_PLATFORM (no idea where p_PLATFORM comes from)
3665      - when "CC" is not set in the optfile, look for possible C compiler
3666        (instead of just setting CC=cc)
3667      - put back version v.169 modif (from 2008/02/15), was dropped in v.173 changes:
3668        => add a ".F" to ".o" rule for source files with no "#include" (such as
3669           port_rand.F); otherwise, default ignores FOPTIM and just uses FFLAGS.
3670      - move gfortran before g77 in list of possible Fortran compiler (consistent
3671        with reference compiler switch from g77 to gfortran)
3672    o pkg/seaice:
3673      o remove SEAICE_OLD_AND_BAD_DISCRETIZATION-code, add a test to
3674        seaice_check that stops the model, when the CPP flag is used.
3675      o seaice_growth.F: make capping of ice volume conserving by returning the
3676        capped ice as freshwater to EmPmR. This does not change the verification
3677        experiments but will change runs where the capping is acutally active
3678    o change reference platform+compiler from faulks+g77 to baudelaire+gfortran
3679      (except the 2 fizhi test exp.); update output of exp.: bottom_ctrl_5x5,
3680         global_ocean.cs32x15 (icedyn, thsice, AD thsice), global_ocean_ebm (AD),
3681         lab_sea (fd, hb87, salt_plume), MLAdjust (3/5) and vermix (dd)
3682    o tools/genmake2:
3683      - merge genmake_warnings & genmake_errors into 1 log file: "genmake.log")
3684      - change DUMPSTATE default to false (can use "-ds" option to switch it to T)
3685      - clean previous genmake log files before anything else.
3686      - change Makefile to remove testreport log files (*.tr_log) and genmake log
3687        files only with "CLEAN" target (instead of "Clean");
3688    o pkg/generic_advdiff:
3689      Change OBCS in multiDim advection (gad_advection.F):
3690       Use maskInC to prevent intermediate update of tracer-field in OB regions,
3691       thus keeping current-time-step OB values; and remove the call to OBCS_APPLY
3692       which were applying future time-step OB values.
3693      This way, all explicit calculations use current-time-step OB values
3694       (simpler and more consistent).
3695      Affects results when set-up uses time-varying OBC and multi-dim advection;
3696       update output of experiment seaice_obcs.
3697    o pkg/seaice:
3698      move OPTIONS (formerly locally defined) to SEAICE_OPTIONS.h:
3699       this includes SEAICE_GROWTH_LEGACY (+ SEAICE_DO_OPEN_WATER_GROWTH &
3700         SEAICE_OCN_MELT_ACT_ON_AREA ) and SEAICE_SOLVE4TEMP_LEGACY.
3701      Default (pkg/seaice/SEAICE_OPTIONS.h) is to define SEAICE_SOLVE4TEMP_LEGACY
3702       but leave SEAICE_GROWTH_LEGACY undef ; For now, keep verification exp
3703       unchanged (SEAICE_GROWTH_LEGACY defined in */code*/SEAICE_OPTIONS.h)
3704    o pkg aim (2010/10/26):
3705      - Introduce ALLOW_INSOLATION, moving toward a more general incoming solar radiation
3706        formulation with obliquity, eccentricity, ... as run-time parameters,
3707      - Introduce diagnostics for top-of-the-atmaophere incoming solar radiation and
3708        upward shortwave radition at the surface (all-sky and clear-sky).
3709    o pkg/obcs:
3710      - writing sections with globalFiles=T does not work: switch to tiled-files
3711        when writing sections for OBCS (change pkg/rw/write_rec.F accordingly).
3712      - fix index bug (OB_Ie -> OB_Iw_) in obcs_apply_uvice.F
3713      - apply OBCS_SEAICE_COMPUTE_UVICE to both uice and vice at all obcs
3714    
3715    checkpoint62m (2010/10/21)
3716    o pkg/seaice: vectorize seaice_solve4temp.F
3717      - move iterations loops outside of i/j-loops
3718      - requires 2D arrays for TB and effConduct
3719      - add 2D iceOrNot to replace HICE_ACTUAL.GT.0, as HICE_ACTUAL is
3720        modified in this routine
3721      - a little bit of clean up, adjusting indentation, etc.
3722      - replaced a few TEN**a by exp(a*log(10.)) in new code for better
3723        performance and '**TWO' by '**2' (because TWO is a float),
3724        replaced ONE, ZERO
3725    o eesupp/src:
3726       fix flow dir for exch1_z_RX_cube, exch1_uv_RX_cube & exch1_bg_RX_cube
3727    o pkg/seaice/seaice_growth.F
3728      Revision 1.89 of seaice_growth.F completes the overall october 2010 revision and
3729      merging process. The merged routine has two branches, and one activates the 'evolution'
3730      branch by setting SEAICE_GROWTH_LEGACY to undef (at the top of the routine for now).
3731      In summary, here is what the '10/10 revision' did consist of
3732        part 1: seaice_growth.F revisions 1.71 to 1.75
3733          - Preliminary seaice_growth.F clean-up, keeping test results strictly unchanged.
3734            The emphasis here was on improving readability (e.g. by trying to use meaningful
3735            variable names) and modularity (e.g. by adding arrays to store heff etc. updates).
3736        part 1.5:
3737          - revising the lab_sea experiment to make it a more useful (i.e. stable
3738            and representative of an actual model run). This was done by generating a
3739            (winter) pickup to start from, switching back the main experiment dynamic
3740            solver from evp to lsr, having one of the experiments use the free drift solution.
3741        part 2: seaice_growth.F revisions 1.76 to 1.85
3742          - Sorting out hard-coded constants that prevented heat and fresh water conservation.
3743          - Sorting out the various fields units and sign (set early on and reset at the end)
3744            to avoid numerous scalings/re-scalings. By v1.85 the basic unit for ice, heat and
3745            fresh water stock is 'effective ice meters', and >0 implies more ice/snow.
3746          - Using tendency terms arrays (d_HEFF* etc.) to alleviate remaining code locks,
3747            and simplifying logical expressions to further improve readibility.
3748        part 3: seaice_growth.F revisions 1.86 to 1.89
3749          - Re-organize the blocks of code more logically.
3750          - Merging the '_if.F' pieces that add something new.
3751    o pkg/thsice:
3752      - vectorize thsice_solve4temp and thsice_get_exf.
3753        Problem: thsice_solve4temp has an unvectorizable statement that
3754        might also be problematic for TAF
3755      - thsice_get_exf: add the ALLOW_BULK_LARGEYEAGER04 CPP-flag. This
3756        does not change the verifcation experiment, but will change all
3757        experiments that have this flag undefined (not tested in verification);
3758        a little reorganization to save a few 2D fields and recomputations
3759      - 1st step of revisiting thsice adjoint (major recomp. sorted out)
3760      - 2nd step:  fix some store dirs
3761        o seems to work somewhat, i.e. using ifort but not g77
3762        o likely cause are incomplete init. or recomputation
3763        o start verification/global_ocean.cs32x15/input_ad.thsice
3764    o pkg/obcs: add support for exch2
3765      - the position of the boundary and prescribed values are specified using
3766        a global domain with exch2 facets stacked
3767        - in x for N,S boundaries (like W2_mapIO=-1)
3768        - in y for E,W boundaries (so E,W boundaries do not overlap)
3769    o pkg/mdsio: add support for writing global sections with exch2
3770        file layout is as for obcs described above:
3771        - for x-z sections, facets are stacked in x (like W2_mapIO=-1)
3772        - for y-z sections, facets are stacked in y
3773    o pkg/thsice:
3774       - change a few routines for better vectorization: thsice_albedo.F,
3775         thsice_step_temp.F, and in thsice_calc_thickn.F. Results are
3776         not affected, but in particular the latter routine has changed
3777         dramatically (not necessarily easier to read now).
3778       - re-arrange calculation in THSICE_SOLVE4TEMP: move outside of i,j loops
3779       iteration loop and call to S/R THSICE_GET_BULKF & THSICE_GET_EXF.
3780    o verification/lab_sea:
3781      - overhaul of the forward model experiments. The main motivation
3782        for this revision is that lab_sea has proven quite fragile (when
3783        changing the sea-ice code, and switching platforms) to a point
3784        when failures were very hard to attribute to specific code problems.
3785      - the suspected reason for this fragility is noise amplification by evp so,
3786        to start with, we decided to replace evp with lsr in the main experiment.
3787      - the input.lsr experiment thus became obsolete and was removed.
3788      - it was replaced with the input.fd experiment that uses an
3789        analytical "free drift" solution as the ice velocity field.
3790      - Taken together, input (lsr), input.fd (free drift) and input.hb87 (evp)
3791        will hopefully allow us to discriminate problems due to dynamic solvers
3792        from problems due to the thermodynamic code. input.salt_plume (lsr) allows
3793        us to test additional options, along with the salt plume package.
3794      - Finally a pickup was generated (at the end of a one year run) to
3795        make the tests more representative of an actual model run. Previously
3796        the tests starting point was a 1m thickness of ice everywhere.
3797    o pkg/seaice:
3798      - introducing S\R seaice_freedrift.F that compute the
3799        analytical solution to an approximate ice momentum
3800        equation (i.e. the simple stress/coriolis balance).
3801      - define SEAICE_ALLOW_FREEDRIFT to trigger the computation
3802        of the free drift velocity field, and enable its use.
3803        To actually use the free drift solution as the model ice
3804        velocity field set SEAICEuseFREEDRIFT to .TRUE. in data.seaice.
3805    o move "useOASIS" from PARAMS.h to EEPARAMS.h and read it from "eedata"
3806    
3807    checkpoint62l (2010/10/04)
3808    o pkg/seaice:
3809      -fix the USE_ORIGINAL_SBI version (for variable freezing point);
3810      -use "celsius2K" in SEAICE_VARIABLE_FREEZING_POINT and in new
3811       version (with USE_ORIGINAL_SBI undef);
3812    o add hooks for new packages OASIS, the package will follow
3813      (hooks exclude the seaice pkg for now)
3814    o pkg/autodiff: ALLOW_AUTODIFF_WHTAPEIO
3815      Option to use mdsio_read_whalos.F/mdsio_write_whalos.F,
3816      rather than mdsio_readvector.F/mdsio_writevector.F, within
3817      adread_adwrite.F to read/write adjoint-related tapes to disk.
3818    o eesupp and pkg/mdsio: ALLOW_WHIO
3819      Option to write/read 2D fields to files including tiles halos.
3820      The main purpose is for adjoint related "tape I/O".
3821      The secondary purpose is for debugging phases.
3822      A word on those rather specifically intended purposes.
3823      The code was meant to be stripped down to the bare minimum.
3824      Typically, there is a unique and basic mapping to the global
3825      buffer (tile by tile, then proc by proc, then level by level), and
3826      byteswaps and meta-files are omitted. Indeed the (*_WH*) code is not
3827      meant to generate user friendly outputs of various shapes and forms.
3828      Rather it is intended, for the knowledgeabale developers,
3829      to be largely independent of the many mdsio options, to allow
3830      outputs of tiles+halos in debugging phases and in adjoint runs,
3831      and to allow some flexibility in tuning (adoint) I/O depending on each
3832      file system behavior. With regard to tuning, most of the potential knobs
3833      (to leave files open, to allocate the I/O indep. of usesinglecpuio,
3834      to specify directories, to specify the typical size of I/O calls, etc.)
3835      are not yet included, and will be added if they prove useful.
3836    o pkg/seaice:
3837       fix uninitialised arrays in USE_ORIGINAL_SBI version of seaice_solve4temp.F
3838    o pkg/seaice:
3839       new S/R seaice_solve4temp.F: this is the merged version of Ian Fenty
3840       code (seaice_budget_ice_if.F) which enable to recover old standard
3841       code (seaice_budget_ice.F) when option USE_ORIGINAL_SBI is defined.
3842       temporary: add "#define USE_ORIGINAL_SBI" at the top of seaice_solve4temp.F.
3843    o model/src (rStar):
3844       use simple average (not area weighted) of rStarFac at U,V point when using
3845       vectorInvariant and selectKEscheme=1,3 (consistent with mom. vertical advection)
3846       update output of exp. fizhi-cs-32x32x40 and fizhi-cs-aqualev20.
3847    
3848    checkpoint62k (2010/09/17)
3849    o adjoint
3850       * changed verification/global_ocean.cs32x15 ; adjoint now tests
3851         Adams-Bashforth 3 + NLFS + RSTAR
3852       * some more modifs required for ECCO-GODAE v4
3853    o pkg/seaice
3854       add SEAICE_AGE_VOL option to use volume instead of area for
3855       integrating SEAICE_AGE
3856    o model/src:
3857       first check-in of sigma & hybrid-sigma coordinate code ; also includes
3858       non-linear free-surface parts ; but pressure-gradient not yet coded.
3859    o pkg/ptracers:
3860       option for ptracer to convert Salt Relax into additional EmP.
3861        tested in exp. global_ocean.90x40x15.dwnslp (update output)
3862    
3863    checkpoint62j (2010/08/25)
3864    o pkg/ggl90:
3865       other minor changes: remove 3-D temp array gTKE (+ add argument myIter)
3866    o pkg/dic: car_flux.F, phos_flux.F
3867      - reduce number of exp-calls in order to improve performance
3868      - clean up a little (replace fields by their macros, etc., fix
3869        typo in CPP-flag)
3870  o pkg/ggl90: minor changes  o pkg/ggl90: minor changes
3871    - GGL90diffKrS was removed --> always use GGL90diffKr    - GGL90diffKrS was removed --> always use GGL90diffKr
3872    - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV    - GGL90viscAr was removed --> replaced with GGL90viscArU, GGL90viscArV
3873    - hack of mxlMaxFlag=2 --> ensure mixing between first and second level (commented out for now)    - hack of mxlMaxFlag=2 --> ensure mixing between first and second level
3874        (commented out for now)
3875    - change in max/min operations to ensure that smoothing is ok    - change in max/min operations to ensure that smoothing is ok
3876    - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)    - smoothing of GGL90viscAr was moved to ggl90_calc.F (as done for GGL90diffKr)
3877    - always use diffKrNrT as background profile (i.e. never use diffKr field)    - always use diffKrNrT as background profile (i.e. never use diffKr field)
# Line 258  o tools/build_options: Line 4122  o tools/build_options:
4122      but keep the former optfile for few weeks for smooth transition      but keep the former optfile for few weeks for smooth transition
4123  o pkg/ecco  o pkg/ecco
4124    - allow user defined cost function contributions    - allow user defined cost function contributions
4125          CPP: ALLOW_USERCOST_CONTRIBUTION       CPP: ALLOW_USERCOST_CONTRIBUTION
4126          USAGE: compute contributions in cost_usercost_all.F       USAGE: compute contributions in cost_usercost_all.F
4127    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.    - note: this is identical to what ALLOW_GENCOST_CONTRIBUTION once was.
4128        the two options are complementary.        the two options are complementary.
4129  o pkg/smooth  o pkg/smooth

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