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revision 1.128 by heimbach, Thu Feb 6 22:43:09 2003 UTC revision 1.233 by jmc, Fri Jan 2 23:59:36 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52e_pre
7    
8    o fix bug in impldiff when Nr=1 or Nr=2.
9    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
10    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
11    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
12      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
13    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
14    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
15    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
16    
17    checkpoint52d_post
18    o re-tiled many expts to allow comparison in multi-processor mode
19      - updated output accordingly
20      - changed hs94.128x64x5 to use intial T from file rather than use the
21        random number generator
22    o add infrastructure in model routines for fizhi and gridalt packages
23    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
24    o changes to permit hi-res, cubed-sphere, configuration
25      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
26      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
27      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
28        of surface winds for the cube
29      (A verification experiment, based on global_ocean.cs32x15, but with
30       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
31       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
32       complete with example surface forcing files and matlab scripts to look
33       at the output and compare it with that of global_ocean.cs32x15.)
34    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
35       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
36       to conform to the common rule.
37    o check-in the first version of the coupler + interfaces for multi-components
38       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
39       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
40       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
41       - ocean and atmos. share the same horizontal grid (no interpolation).
42       - exchanges between component and coupler is done in forward_step
43    o new verification experiment, cpl_aim+ocn:
44       coupled ocean - AIM atmosphere on cs32 grid.
45    
46    checkpoint52d_pre
47    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
48    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
49    
50    checkpoint52c_post
51    o Fixing OPTIONS files for use of exf:
52      - ALLOW_ECCO not needed
53      - ECCO_CPPOPTIONS.h should not be included from
54        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
55        as has been the case in the past
56      - All cal/exf related options are currently set in
57        single header file. Should remain so until we
58        agree on a consistent new policy.
59    o Removed all CPP options for cal package.
60      cal has no more CPP options.
61    o modified STOREs in GAD_ADVECTION
62    o corrected key comp. for passkey
63    
64    checkpoint52b_post
65    o new version: "thsice" of thermodynamic sea-ice pkg:
66     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
67     - modify fluxes but do not change theta directly;
68     - light cleaning of bulk_force pkg (still needed with thsice).
69     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
70       + output_thsice.txt to test thsice & bulk_force pkgs.
71    o put back grid & coriolis monitor output.
72    checkpoint52b_pre
73    
74    o call "do_the_model_io" at the beginning (=> dump initial state)
75    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
76    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
77      (need info on NUMBER_OF_PTRACERS)
78    o missing PTRACERS headers in some routines
79    o default tamc.h in pkg/autodiff supposed to crash
80      to ensure proper customization
81    
82    checkpoint52a_post
83    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
84      - moved surfaceTendencyTice from pkg/seaice to main code
85      - subroutine FREEZE_SURFACE now limits only surface temperature
86        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
87        => new output.txt for global_ocean.cs32x15 & global_with_exf
88      - keep the old version of FREEZE for backward compatibility;
89        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
90      - corresponding modifs for TAF directives
91    o added surface flux output variables to TIMEAVE_STATVARS
92    o time-averaged output for pkg/ptracers
93    o fix problem with ECCO-related divided adjoint
94      snapshot file was missing some ad-variables,
95      but no warning issued by TAF
96    
97    checkpoint52a_pre
98    o some bug fixes for #undef REAL4_IS_SLOW
99    
100    checkpoint52 = ecco_c52_e35
101    o after testing adjoints of checkpoint51u_post
102    
103    checkpoint51u_post
104    o this is the post-merge tag of the ecco-branch
105      (needs another clean checkout and re-testing)
106    o various natl_box_adjoint configs and results
107      but no input fields
108    o obcs adjoint not yet merged!
109    o adding ECCO global 1x1 and 2x2 degree configs
110    o updated/extended some store directives for seaice
111    o pkg/ecco now containes ecco-specific part of cost function
112    o top level routines the_main_loop, forward_step
113      supersede those in model/src/
114      previous input data.cost now in data.ecco
115      (new namelist ecco_cost_nml)
116    o in ctrl/ cleaned some cross-dependencies and updated CPP options
117    
118    checkpoint51t_post
119    o this is the pre-merge tag of the ecco-branch
120    
121    checkpoint51s_post
122    o cleanup: removed various obsolete #define-s
123    o pkg/grdchk
124      - renamed 'ph-grd 3' to 'grad-res'
125      - merged from ecco-branch
126        (remaining bug fixes for obcs gradient checks)
127      - additional high-precision output for testreport
128        (grep for 'precision_grdchk_result')
129    
130    checkpoint51r_post
131    o cleaned up or removed CPP_OPTIONS.h files
132    o updated results for some of the tests to reflect the new
133      optfiles (-ieee: -O0 instead of -O3)
134    
135    checkpoint51q_post
136    o cd_code:
137      - moved cd_scheme.F -> cd_code_scheme.F
138      - separate read_checkpoint from cd_code_ini_vars.F
139      - separated cd_code part from write_checkpoint
140      - updated AD_SOURCE, generated .flow
141      - added CD_CODE_VARS.h to the_main_loop
142      - Moving cd_code specific store dir.s to pkg/cd_code
143    o ctrl package totally restructured
144      - pack/unpack now optional and decoupled from
145        xx_/adxx_ I/O
146      - ctrl_pack/unpack cleaned
147        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
148      - confined inclusion of AD_CONFIG.h to where necessary.
149    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
150    
151    checkpoint51p_post
152    o create initial cd_code package
153      - WARNING: the initialization of fields within packages
154        is broken because INI_FIELDS (where READ_CHECKPOINT is
155        called) is called *before* PACKAGES_INIT_VARIABLES.
156        This seems to be backwards since
157        1) its important to initially zero the entire field including
158           the "halo" region
159        2) zeroing needs to be done *before* reading pickup info
160           and the pickup call might or might not happen in any
161           particular run
162      - this needs an overhaul for R2
163    o cleanup verification/*/code/GMREDI_OPTIONS.h
164    o cleanup testreport
165    
166    checkpoint51o_post
167    o bringing AD-related verif's up to date with genmake2
168      - carbon/
169      - global_ocean.90x40x15/
170      - hs.94.1x64x5/
171      - (front_relax/ )
172    o (more) consistent directory structure for AD-related verif.'s
173    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
174    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
175    o bug fix in find_alpha.F for MDJWF:
176      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
177        change rho -> rho-rhoConst
178      - replace call find_rho to find_rhonum
179    o initialisation of rFlx extended to full array (required by TAF)
180      and shifted to thermodynamics
181    o removed PTRACERS.h in ptracers routine
182    o added surfacetendencyPtr to S/R parameter list pracers_forcing
183    o Correcting initialisations for fVerU, fVerV.
184    o helping TAF to recognize dependency on kUp for
185      fVerU, fVerV
186    o Replacing delZ by delR in pkg/ctrl/
187    checkpoint51o_pre
188    
189    o undid all of cp51 pending some cleanups and discussion
190    o added the [#include "AD_CONFIG.h"] statement to all files that need
191       it for adjoint/tl #defines
192     o re-worked the build logic in genmake2 to support AD_CONFIG.h
193     o removed tools/genmake since it no longer works
194    
195    checkpoint51n_post
196    o modifications to make FREEZE flux visible to pkg/kpp
197      - moved surfaceTendencyTice from pkg/seaice to main code
198      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
199      - subroutine FREEZE now limits only surface temperature
200        (this means new output.txt for global_ocean.90x40x15,
201         global_ocean.cs32x15, and global_with_exf)
202    o added surface flux output variables to TIMEAVE_STATVARS
203    
204    checkpoint51n_pre
205    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
206    o added [#include "AD_CONFIG.h"] to all files that use the following
207      defines:
208      - ALLOW_ADJOINT_RUN
209      - ALLOW_TANGENTLINEAR_RUN
210      - ALLOW_ECCO_OPTIMIZATION
211    
212    checkpoint51m_post
213    o incorporating changes to get TAMC/TAF working in genmake2
214      - added new TAMC/TAF targets to the Makefile
215      - various cleanups related to package handling
216      - these changes should have no impact on the forward model
217    
218    checkpoint51l_post
219    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
220     - faster algorithm for cal_addtime.F
221     - higher precision arithmetic, where needed
222     - pkg/exf *startdate variables changed from calendar date to
223       model integration time
224    
225    checkpoint51l_pre
226    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
227    o enable to apply restoring on S & T only in a latitude band.
228    o update output (external_forcing_surf modif. change truncation errors)
229       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
230    
231    checkpoint51k_post
232    o change default to: useNHMTerms=.FALSE.
233     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
234       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
235     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
236        exp1, ideal_2D_oce
237     - change data file of oceanic exp (leave the results unchanged for now)
238       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
239    o set gravitySign automatically according to the vertical coordinate used
240      (and change sign: back to "logical" value: +1 when R increases downward)
241    o added an include barrier to the default CPP_OPTIONS.h and
242      removed the #include "PACKAGES_CONFIG.h" from it
243    o fix a bug in mom_fluxform (from chk51j_post)
244    
245    checkpoint51j_post
246    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
247    o adjusted some flow directives (dynamics, thermodynamics)
248    o added cubed-sphere case to test cost function
249    o heckpoint_lev?_directives.h now include
250      pkg-specific directives, whenever those are enabled.
251    o Moving pkg-specific flow directives to corresponding pkg
252      Moving pkg-specific differentiation list to corresponding pkg
253      Moving pkg-specific checkpoint-lev storing to corresponding pkg
254      ---> conventions are
255           - pkg_ad.flow
256           - pkg_ad_diff.list
257           - pkg_ad_check_lev?_dir.h
258    
259    checkpoint51i_post
260    o merge of the branch-genmake2
261      - knowingly breaks the older genmake
262      - automatic generation of all ALLOW_${PKG_NAME} defines
263      - new testreport supersedes older testscript
264    o large number of package inclusion and header cleanups
265    checkpoint51i_pre
266    
267    o new output for adjoin of global ocean vector invariant
268    o fix for checkpoint of thermodynamic seaice and bulk_force
269    o Steph gchem various cleanups
270    
271    checkpoint 51h_pre
272    o fixed some single quotes
273    o modify gchem pkg to be more versatile
274    o modifications to clean up dic pkg
275    o add pkg/cfc
276    
277    checkpoint51g_post
278    o provide links for ARPACK and ADM*TLM
279    o start removing verification/vero/
280    o update AD-related stuff
281      (in particular some IF-statements in model/src/ routines)
282    o adding to verification/global_ocean.90x40x15/ adjoint of
283      vector invariant setup
284    
285    checkpoint51f_post
286    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
287    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
288      of tracer Green's fucntions for ocean inversion project.
289    
290    checkpoint51f_pre
291    o Added on-the-fly spatial interpolation capability
292        "USE_EXF_INTERPOLATION" to pkg/exf.
293      - This is a temporary Cartesian-grid hack until
294        the super-duper ESMF coupler becomes available.
295      - See verification/global_with_exf/README for usage example.
296      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
297        flags and modified pkg/seaice accordingly.
298    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
299        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
300        non-local transport term.
301    
302    checkpoint51e_post
303    o pkg/mom_vecinv:
304      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
305      - add time-ave diagnostic of vorticity advection.
306    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
307    o atmospheric geopotential: - include water vapor effect;
308                                - use p^kappa in p* scaling.
309    o land pkg: read initial state from files.
310    o AIM : add stratospheric drag in the upper level
311    
312    checkpoint51d_post
313    o change function ILNBLNK (=> last non-blank char.) to return zero
314      (instead of the string length) when the string. char is empty
315    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
316    o modif's to restore TAMC compatibility
317      - avoid "_d" constructs in PARAMETER declarations
318      - avoid interrupting lines by comment lines
319    o Use cluster local disks for purely local I/O
320      vs. globally visible disks needed for ctrl stuff
321      (merged from ecco-branch)
322      - new active_file_loc... and mdsio_..._loc routines
323      - affected packages: autodiff, ctrl, grdchk, mdsio
324    
325    checkpoint51c_post
326    o introducing integer flag debugLevel
327      - debLevZero: suppress all output
328      - debLevA: standard
329      - debLevB: equivalent to current debugMode=.TRUE.
330    o introducing pathname variable mdsioLocalDir for mdsio
331      that can be specified at runtime
332      (relevant for cluster I/O to local disk)
333    `
334    >>>checkpoint51b_post
335    adjoint of ptracers
336    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
337    o extended state in checkpoint_lev?, etc.
338    o alternative ctrl/cost with tr1 or ptracer
339    o new comlev1_bibj_ptracers
340    o new ptracers.flow
341    o made ptracers_forcing same as external_forcing_s
342    o added verification for adjoint with ptracers
343      - adm. grdchk fail so far
344      - tlm. grdchk OK
345      - checked tapelev/comlev recomputations: OK
346    <<<checkpoint51b_pre
347    
348    checkpoint51a_post
349    o added code for biogeochemistry package
350      - new pkgs: dic, gchem
351      - new subroutine in ptracers
352    o modify code for biogeo packages
353      - in model/src and pkg/ptracers
354    
355    checkpoint51
356    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
357      - autodiff, ctrl, exf, grdchk, seaice
358      kept separate packages
359      - cost, ecco, obcs
360    o updating verification/internal_wave, verification/lab_sea
361      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
362    
363    checkpoint50i_post
364    o Preparing next differentiable checkpoint and sync
365      of MAIN vs. ecco-branch
366      - 1st step: this one is differentiable
367      - 2nd step: next(! not this) checkpoint will have updated packages
368                  from ecco-branch)
369    
370    checkpoint50h_post
371    o new package "land": provide surface BC for AIM.
372    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
373    o AIM: use true log-P extrapolation for near surface temp (= as in
374        F.Molteni paper) ; update aim.5l_cs output.
375    o New variable in PARM03 for more flexible pickups
376    o somewhat cleaned package initialisation sequence for
377      ctrl/ cost/ ecco/ in packages_... routines
378    
379    checkpoint50g_post
380    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
381      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
382      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
383        made the default because of faster convergence than ADI
384    
385    checkpoint50f_post
386    o exf totally restructured
387      - replaced all exf_set_ routines by one generic exf_set_gen.F
388        and made sure it's still differentiable
389      - split exf_getffields.F into new exf_bulkformulae.F
390      - exf_inscal_/exf_outscal_ suffixes consistent with field names
391      - updated adjoint/makefile and relevant verif. accordingly
392    
393    checkpoint50f_pre
394     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
395          + change Evap over land. (update aim.5l_cs output)
396     o added missing .cvsignores and made uniform across expts
397     o changed configuration of tidal_basin_2d expt
398     o added pkg/debug functions for tracing code in fatal crashes
399     o tidied pkg/monitor to use MONITOR_OPTIONS.h
400     o new fn in pkg/monitor to stop model if solution grows too big
401     o removed lots of single quotes from comments
402    
403    checkpoint50e_post
404    o make KPP work with PTRACERS
405     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
406       nearly a copy of kpp_transport_s
407     - there is no analogue to SurfaceTendencyS, so I have to use
408       gPtr(of the surface layer) instead
409    o add a new platform SunFire+mpi (SunFire 15000) to genmake
410    checkpoint50e_pre
411    
412    checkpoint50d_post
413    o change kpp output from multiple-record state files to single-record state
414      files analogous to write_state.F
415    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
416      analogous to the cg2d-related output.
417    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
418      so that writing to internal file fn (with length 512) fails.
419    checkpoint50d_pre
420    
421    checkpoint50c_post
422    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
423    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
424    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
425    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
426    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
427    
428    checkpoint50c_pre
429    Merging from release1_p13:
430    o bug fix for pkg/seaice dynamic solver
431    o Added SEAICE_initialHEFF to pkg/seaice
432    
433    checkpoint50b_post
434    o store u*,v* in gU,V instead of in guNm1,gvNm1
435    o in order to put the momForcing out of the Adams-Bashforth:
436      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
437      to timestep.F
438    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
439    o re-generate output for highly sensitive test-exp:
440       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
441    
442    checkpoint50b_pre
443    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
444    o corrected CPP option mismatch in exf_Bulk... functions for case
445      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
446    
447    checkpoint50a_post
448    o Bug fix for merging between c50 and KPP.
449      ikey was passed from thermodynamics to kpp_calc via
450      common block rather than being recomputed in kpp_calc,
451      in contradiction with new key itdkey.
452      New key ikppkey created, and tamc.h headers updated.
453    
454    checkpoint50
455    - 2nd step of merge with ecco-branch:
456      merge changes in ecco-branch back into main trunk
457    - bug fix in find_alpha
458    - more storing in gmredi_calc_tensor.F, kpp_routines.F
459    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
460    - merged some sliced AD support routines
461    
462    checkpoint49
463    merged from ecco-branch:
464    o exf:
465      - Enable initialisation of forcing fields to constant
466        (runtime) values.
467      - in exf_getffields.F
468        Reduce i-/j-loop to interior domain, discarding overlaps.
469        That also fixes wrong TAF-key computations for key_1, key_2
470        with bulf formulae.
471      - exf_init.F modify #ifdef for exf_init_evap
472      - exf_getffieldrec.F, ctrl_getrec.F
473        The following INT-usages are not safe:
474          fldsecs  = int(fldsecs/fldperiod)*fldperiod
475          fldcount = int(fldsecs/fldperiod) + 1
476        and were modified.
477    o autodiff: checkpoint_lev...
478      - updated storing for bulk formulae (some arrays were missing)
479      - added state for seaice package
480      - synchronized with main branch
481    o DIVA:
482      Modif.s in
483      - the_main_loop.F
484      - the_model_main.F
485      and added cost_final_restore.F cost_final_store.F
486      o With these changes, it is possible to fully separate
487        the first forward run to compute the cost function (mdthe_main_loop)
488        and adjoint runs over individual DIVA intervals (adthe_main_loop)
489        into separate model executions.
490        This enables better tuning of DIVA to given queue sizes.
491      o Loss of cost function value in consecutive DIVA runs is
492        fixed by storing to 'costfinal' file.
493      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
494        beginning/end of adjoint integration is accounted for.
495      The current changes apply to TAF-1.4.26.
496      TAF has one remaining bug, requiring one manual change
497      (see MITgcm manual).
498    o cal: synchronized between MAIN and ecco-branch
499    
500    checkpoint48i_post
501    o Changes to restore differentiability of code w.r.t. previous tag
502      (mostly adding new routines to make list and replacing
503      pressure by totPhiHyd).
504    o Updated and merged grdchk package
505      - has both ADM and TLM checks
506      - works for single- and multi-proc.
507      - output cleaned
508      - worked successfully for parallel DIVA
509    o genmake:
510      - Adding -platform=SP4
511      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
512    o Modif. for DIVA:
513      ctrl_unpack should not be called in intermediate DIVA interval.
514      (similar thing would apply for active files such as
515      tbar, sbar, psbar, which should not be reinitialised;
516      only relevant for ecco-branch)
517    
518    checkpoint48h_post
519    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
520    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
521    o Added SEAICE_initialHEFF to pkg/seaice
522    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
523    
524    checkpoint48g_post
525    --- EOS:
526    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
527      store total Potential in totPhyHyd for diagnostics & EOS.
528    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
529    --- Pressure/geopotential gradient:
530    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
531    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
532      ( changes results of global_ocean_pressure )
533    o NLFS + z-coord.: add eta*Rho' contribution.
534    o accurate phiHyd when using interface-W at the middle between 2 centers
535     ( changes results of ideal_2D_oce )
536    o includes r* 2nd term in potential gradient.
537    
538    checkpoint48f_post
539    Merging from release1_p12:
540    o Modifications for using pkg/exf with pkg/seaice
541      - improved description of the various forcing configurations
542      - added basic radiation bulk formulae to pkg/exf
543      - units/sign fix for evap computation in exf_getffields.F
544      - updated verification/global_with_exf/results/output.txt
545    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
546      (SBO) core products, including oceanic mass, center-of-mass,
547      angular, and bottom pressure (see pkg/sbo/README.sbo).
548    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
549      to avoid negative values in shallow regions.
550      - updated verification/natl_box/results/output.txt
551      - updated verification/lab_sea/results/output.txt
552    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
553    o Added useSingleCpuIO option (see PARAMS.h).
554    o Updated useSingleCpuIO option in mdsio_writefield.F to
555      work with multi-field files, e.g., for single-file pickup.
556    o pkg/seaice:
557      - bug fix in growth.F: QNET for no shortwave case
558      - added HeffFile for specifying initial sea-ice thickness
559      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
560    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
561      kpp_transport_t.F, forward_step.F, and the_main_loop.F
562    o pkg/seaice:
563      - adjoint-friendly modifications
564      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
565    
566    checkpoint48e_post
567    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
568    o dynamics: change definition of computational domain & adapt mom_fluxform
569      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
570    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
571        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
572        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
573        global_ocean.90x40x15 global_with_exf global_ocean_pressure
574        inverted_barometer solid-body.cs-32x32x1
575      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
576    
577    checkpoint48d_post
578    o in preparation for r*:
579     a) use pre-computed gradient of hydrostatic potential:
580        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
581     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
582        => affects results of glob_oce_pressure (different truncation error)  
583      update output.txt of ideal_2D_oce & global_ocean_pressure
584    
585    checkpoint48d_pre
586    o in preparation for r*:
587      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
588      pass the 2 comp. of the grad. as arguments to momentum S/R.
589      but for the moment, only used if it does not change the results.
590    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
591    
592  checkpoint48c_post  checkpoint48c_post
593  Modifications in treatment of initial flux forcing controls  Modifications in treatment of initial flux forcing controls
594  to avoid extra storing of flux fields.  to avoid extra storing of flux fields.

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