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revision 1.128 by heimbach, Thu Feb 6 22:43:09 2003 UTC revision 1.229 by jmc, Wed Dec 17 05:39:01 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
7      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
8    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
9    
10    checkpoint52d_post
11    o add infrastructure in model routines for fizhi and gridalt packages
12    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
13    o changes to permit hi-res, cubed-sphere, configuration
14      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
15      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
16      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
17        of surface winds for the cube
18      (A verification experiment, based on global_ocean.cs32x15, but with
19       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
20       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
21       complete with example surface forcing files and matlab scripts to look
22       at the output and compare it with that of global_ocean.cs32x15.)
23    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
24       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
25       to conform to the common rule.
26    o check-in the first version of the coupler + interfaces for multi-components
27       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
28       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
29       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
30       - ocean and atmos. share the same horizontal grid (no interpolation).
31       - exchanges between component and coupler is done in forward_step
32    o new verification experiment, cpl_aim+ocn:
33       coupled ocean - AIM atmosphere on cs32 grid.
34    
35    checkpoint52d_pre
36    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
37    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
38    
39    checkpoint52c_post
40    o Fixing OPTIONS files for use of exf:
41      - ALLOW_ECCO not needed
42      - ECCO_CPPOPTIONS.h should not be included from
43        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
44        as has been the case in the past
45      - All cal/exf related options are currently set in
46        single header file. Should remain so until we
47        agree on a consistent new policy.
48    o Removed all CPP options for cal package.
49      cal has no more CPP options.
50    o modified STOREs in GAD_ADVECTION
51    o corrected key comp. for passkey
52    
53    checkpoint52b_post
54    o new version: "thsice" of thermodynamic sea-ice pkg:
55     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
56     - modify fluxes but do not change theta directly;
57     - light cleaning of bulk_force pkg (still needed with thsice).
58     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
59       + output_thsice.txt to test thsice & bulk_force pkgs.
60    o put back grid & coriolis monitor output.
61    checkpoint52b_pre
62    
63    o call "do_the_model_io" at the beginning (=> dump initial state)
64    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
65    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
66      (need info on NUMBER_OF_PTRACERS)
67    o missing PTRACERS headers in some routines
68    o default tamc.h in pkg/autodiff supposed to crash
69      to ensure proper customization
70    
71    checkpoint52a_post
72    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
73      - moved surfaceTendencyTice from pkg/seaice to main code
74      - subroutine FREEZE_SURFACE now limits only surface temperature
75        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
76        => new output.txt for global_ocean.cs32x15 & global_with_exf
77      - keep the old version of FREEZE for backward compatibility;
78        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
79      - corresponding modifs for TAF directives
80    o added surface flux output variables to TIMEAVE_STATVARS
81    o time-averaged output for pkg/ptracers
82    o fix problem with ECCO-related divided adjoint
83      snapshot file was missing some ad-variables,
84      but no warning issued by TAF
85    
86    checkpoint52a_pre
87    o some bug fixes for #undef REAL4_IS_SLOW
88    
89    checkpoint52 = ecco_c52_e35
90    o after testing adjoints of checkpoint51u_post
91    
92    checkpoint51u_post
93    o this is the post-merge tag of the ecco-branch
94      (needs another clean checkout and re-testing)
95    o various natl_box_adjoint configs and results
96      but no input fields
97    o obcs adjoint not yet merged!
98    o adding ECCO global 1x1 and 2x2 degree configs
99    o updated/extended some store directives for seaice
100    o pkg/ecco now containes ecco-specific part of cost function
101    o top level routines the_main_loop, forward_step
102      supersede those in model/src/
103      previous input data.cost now in data.ecco
104      (new namelist ecco_cost_nml)
105    o in ctrl/ cleaned some cross-dependencies and updated CPP options
106    
107    checkpoint51t_post
108    o this is the pre-merge tag of the ecco-branch
109    
110    checkpoint51s_post
111    o cleanup: removed various obsolete #define-s
112    o pkg/grdchk
113      - renamed 'ph-grd 3' to 'grad-res'
114      - merged from ecco-branch
115        (remaining bug fixes for obcs gradient checks)
116      - additional high-precision output for testreport
117        (grep for 'precision_grdchk_result')
118    
119    checkpoint51r_post
120    o cleaned up or removed CPP_OPTIONS.h files
121    o updated results for some of the tests to reflect the new
122      optfiles (-ieee: -O0 instead of -O3)
123    
124    checkpoint51q_post
125    o cd_code:
126      - moved cd_scheme.F -> cd_code_scheme.F
127      - separate read_checkpoint from cd_code_ini_vars.F
128      - separated cd_code part from write_checkpoint
129      - updated AD_SOURCE, generated .flow
130      - added CD_CODE_VARS.h to the_main_loop
131      - Moving cd_code specific store dir.s to pkg/cd_code
132    o ctrl package totally restructured
133      - pack/unpack now optional and decoupled from
134        xx_/adxx_ I/O
135      - ctrl_pack/unpack cleaned
136        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
137      - confined inclusion of AD_CONFIG.h to where necessary.
138    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
139    
140    checkpoint51p_post
141    o create initial cd_code package
142      - WARNING: the initialization of fields within packages
143        is broken because INI_FIELDS (where READ_CHECKPOINT is
144        called) is called *before* PACKAGES_INIT_VARIABLES.
145        This seems to be backwards since
146        1) its important to initially zero the entire field including
147           the "halo" region
148        2) zeroing needs to be done *before* reading pickup info
149           and the pickup call might or might not happen in any
150           particular run
151      - this needs an overhaul for R2
152    o cleanup verification/*/code/GMREDI_OPTIONS.h
153    o cleanup testreport
154    
155    checkpoint51o_post
156    o bringing AD-related verif's up to date with genmake2
157      - carbon/
158      - global_ocean.90x40x15/
159      - hs.94.1x64x5/
160      - (front_relax/ )
161    o (more) consistent directory structure for AD-related verif.'s
162    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
163    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
164    o bug fix in find_alpha.F for MDJWF:
165      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
166        change rho -> rho-rhoConst
167      - replace call find_rho to find_rhonum
168    o initialisation of rFlx extended to full array (required by TAF)
169      and shifted to thermodynamics
170    o removed PTRACERS.h in ptracers routine
171    o added surfacetendencyPtr to S/R parameter list pracers_forcing
172    o Correcting initialisations for fVerU, fVerV.
173    o helping TAF to recognize dependency on kUp for
174      fVerU, fVerV
175    o Replacing delZ by delR in pkg/ctrl/
176    checkpoint51o_pre
177    
178    o undid all of cp51 pending some cleanups and discussion
179    o added the [#include "AD_CONFIG.h"] statement to all files that need
180       it for adjoint/tl #defines
181     o re-worked the build logic in genmake2 to support AD_CONFIG.h
182     o removed tools/genmake since it no longer works
183    
184    checkpoint51n_post
185    o modifications to make FREEZE flux visible to pkg/kpp
186      - moved surfaceTendencyTice from pkg/seaice to main code
187      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
188      - subroutine FREEZE now limits only surface temperature
189        (this means new output.txt for global_ocean.90x40x15,
190         global_ocean.cs32x15, and global_with_exf)
191    o added surface flux output variables to TIMEAVE_STATVARS
192    
193    checkpoint51n_pre
194    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
195    o added [#include "AD_CONFIG.h"] to all files that use the following
196      defines:
197      - ALLOW_ADJOINT_RUN
198      - ALLOW_TANGENTLINEAR_RUN
199      - ALLOW_ECCO_OPTIMIZATION
200    
201    checkpoint51m_post
202    o incorporating changes to get TAMC/TAF working in genmake2
203      - added new TAMC/TAF targets to the Makefile
204      - various cleanups related to package handling
205      - these changes should have no impact on the forward model
206    
207    checkpoint51l_post
208    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
209     - faster algorithm for cal_addtime.F
210     - higher precision arithmetic, where needed
211     - pkg/exf *startdate variables changed from calendar date to
212       model integration time
213    
214    checkpoint51l_pre
215    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
216    o enable to apply restoring on S & T only in a latitude band.
217    o update output (external_forcing_surf modif. change truncation errors)
218       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
219    
220    checkpoint51k_post
221    o change default to: useNHMTerms=.FALSE.
222     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
223       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
224     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
225        exp1, ideal_2D_oce
226     - change data file of oceanic exp (leave the results unchanged for now)
227       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
228    o set gravitySign automatically according to the vertical coordinate used
229      (and change sign: back to "logical" value: +1 when R increases downward)
230    o added an include barrier to the default CPP_OPTIONS.h and
231      removed the #include "PACKAGES_CONFIG.h" from it
232    o fix a bug in mom_fluxform (from chk51j_post)
233    
234    checkpoint51j_post
235    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
236    o adjusted some flow directives (dynamics, thermodynamics)
237    o added cubed-sphere case to test cost function
238    o heckpoint_lev?_directives.h now include
239      pkg-specific directives, whenever those are enabled.
240    o Moving pkg-specific flow directives to corresponding pkg
241      Moving pkg-specific differentiation list to corresponding pkg
242      Moving pkg-specific checkpoint-lev storing to corresponding pkg
243      ---> conventions are
244           - pkg_ad.flow
245           - pkg_ad_diff.list
246           - pkg_ad_check_lev?_dir.h
247    
248    checkpoint51i_post
249    o merge of the branch-genmake2
250      - knowingly breaks the older genmake
251      - automatic generation of all ALLOW_${PKG_NAME} defines
252      - new testreport supersedes older testscript
253    o large number of package inclusion and header cleanups
254    checkpoint51i_pre
255    
256    o new output for adjoin of global ocean vector invariant
257    o fix for checkpoint of thermodynamic seaice and bulk_force
258    o Steph gchem various cleanups
259    
260    checkpoint 51h_pre
261    o fixed some single quotes
262    o modify gchem pkg to be more versatile
263    o modifications to clean up dic pkg
264    o add pkg/cfc
265    
266    checkpoint51g_post
267    o provide links for ARPACK and ADM*TLM
268    o start removing verification/vero/
269    o update AD-related stuff
270      (in particular some IF-statements in model/src/ routines)
271    o adding to verification/global_ocean.90x40x15/ adjoint of
272      vector invariant setup
273    
274    checkpoint51f_post
275    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
276    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
277      of tracer Green's fucntions for ocean inversion project.
278    
279    checkpoint51f_pre
280    o Added on-the-fly spatial interpolation capability
281        "USE_EXF_INTERPOLATION" to pkg/exf.
282      - This is a temporary Cartesian-grid hack until
283        the super-duper ESMF coupler becomes available.
284      - See verification/global_with_exf/README for usage example.
285      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
286        flags and modified pkg/seaice accordingly.
287    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
288        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
289        non-local transport term.
290    
291    checkpoint51e_post
292    o pkg/mom_vecinv:
293      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
294      - add time-ave diagnostic of vorticity advection.
295    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
296    o atmospheric geopotential: - include water vapor effect;
297                                - use p^kappa in p* scaling.
298    o land pkg: read initial state from files.
299    o AIM : add stratospheric drag in the upper level
300    
301    checkpoint51d_post
302    o change function ILNBLNK (=> last non-blank char.) to return zero
303      (instead of the string length) when the string. char is empty
304    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
305    o modif's to restore TAMC compatibility
306      - avoid "_d" constructs in PARAMETER declarations
307      - avoid interrupting lines by comment lines
308    o Use cluster local disks for purely local I/O
309      vs. globally visible disks needed for ctrl stuff
310      (merged from ecco-branch)
311      - new active_file_loc... and mdsio_..._loc routines
312      - affected packages: autodiff, ctrl, grdchk, mdsio
313    
314    checkpoint51c_post
315    o introducing integer flag debugLevel
316      - debLevZero: suppress all output
317      - debLevA: standard
318      - debLevB: equivalent to current debugMode=.TRUE.
319    o introducing pathname variable mdsioLocalDir for mdsio
320      that can be specified at runtime
321      (relevant for cluster I/O to local disk)
322    `
323    >>>checkpoint51b_post
324    adjoint of ptracers
325    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
326    o extended state in checkpoint_lev?, etc.
327    o alternative ctrl/cost with tr1 or ptracer
328    o new comlev1_bibj_ptracers
329    o new ptracers.flow
330    o made ptracers_forcing same as external_forcing_s
331    o added verification for adjoint with ptracers
332      - adm. grdchk fail so far
333      - tlm. grdchk OK
334      - checked tapelev/comlev recomputations: OK
335    <<<checkpoint51b_pre
336    
337    checkpoint51a_post
338    o added code for biogeochemistry package
339      - new pkgs: dic, gchem
340      - new subroutine in ptracers
341    o modify code for biogeo packages
342      - in model/src and pkg/ptracers
343    
344    checkpoint51
345    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
346      - autodiff, ctrl, exf, grdchk, seaice
347      kept separate packages
348      - cost, ecco, obcs
349    o updating verification/internal_wave, verification/lab_sea
350      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
351    
352    checkpoint50i_post
353    o Preparing next differentiable checkpoint and sync
354      of MAIN vs. ecco-branch
355      - 1st step: this one is differentiable
356      - 2nd step: next(! not this) checkpoint will have updated packages
357                  from ecco-branch)
358    
359    checkpoint50h_post
360    o new package "land": provide surface BC for AIM.
361    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
362    o AIM: use true log-P extrapolation for near surface temp (= as in
363        F.Molteni paper) ; update aim.5l_cs output.
364    o New variable in PARM03 for more flexible pickups
365    o somewhat cleaned package initialisation sequence for
366      ctrl/ cost/ ecco/ in packages_... routines
367    
368    checkpoint50g_post
369    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
370      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
371      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
372        made the default because of faster convergence than ADI
373    
374    checkpoint50f_post
375    o exf totally restructured
376      - replaced all exf_set_ routines by one generic exf_set_gen.F
377        and made sure it's still differentiable
378      - split exf_getffields.F into new exf_bulkformulae.F
379      - exf_inscal_/exf_outscal_ suffixes consistent with field names
380      - updated adjoint/makefile and relevant verif. accordingly
381    
382    checkpoint50f_pre
383     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
384          + change Evap over land. (update aim.5l_cs output)
385     o added missing .cvsignores and made uniform across expts
386     o changed configuration of tidal_basin_2d expt
387     o added pkg/debug functions for tracing code in fatal crashes
388     o tidied pkg/monitor to use MONITOR_OPTIONS.h
389     o new fn in pkg/monitor to stop model if solution grows too big
390     o removed lots of single quotes from comments
391    
392    checkpoint50e_post
393    o make KPP work with PTRACERS
394     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
395       nearly a copy of kpp_transport_s
396     - there is no analogue to SurfaceTendencyS, so I have to use
397       gPtr(of the surface layer) instead
398    o add a new platform SunFire+mpi (SunFire 15000) to genmake
399    checkpoint50e_pre
400    
401    checkpoint50d_post
402    o change kpp output from multiple-record state files to single-record state
403      files analogous to write_state.F
404    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
405      analogous to the cg2d-related output.
406    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
407      so that writing to internal file fn (with length 512) fails.
408    checkpoint50d_pre
409    
410    checkpoint50c_post
411    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
412    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
413    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
414    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
415    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
416    
417    checkpoint50c_pre
418    Merging from release1_p13:
419    o bug fix for pkg/seaice dynamic solver
420    o Added SEAICE_initialHEFF to pkg/seaice
421    
422    checkpoint50b_post
423    o store u*,v* in gU,V instead of in guNm1,gvNm1
424    o in order to put the momForcing out of the Adams-Bashforth:
425      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
426      to timestep.F
427    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
428    o re-generate output for highly sensitive test-exp:
429       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
430    
431    checkpoint50b_pre
432    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
433    o corrected CPP option mismatch in exf_Bulk... functions for case
434      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
435    
436    checkpoint50a_post
437    o Bug fix for merging between c50 and KPP.
438      ikey was passed from thermodynamics to kpp_calc via
439      common block rather than being recomputed in kpp_calc,
440      in contradiction with new key itdkey.
441      New key ikppkey created, and tamc.h headers updated.
442    
443    checkpoint50
444    - 2nd step of merge with ecco-branch:
445      merge changes in ecco-branch back into main trunk
446    - bug fix in find_alpha
447    - more storing in gmredi_calc_tensor.F, kpp_routines.F
448    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
449    - merged some sliced AD support routines
450    
451    checkpoint49
452    merged from ecco-branch:
453    o exf:
454      - Enable initialisation of forcing fields to constant
455        (runtime) values.
456      - in exf_getffields.F
457        Reduce i-/j-loop to interior domain, discarding overlaps.
458        That also fixes wrong TAF-key computations for key_1, key_2
459        with bulf formulae.
460      - exf_init.F modify #ifdef for exf_init_evap
461      - exf_getffieldrec.F, ctrl_getrec.F
462        The following INT-usages are not safe:
463          fldsecs  = int(fldsecs/fldperiod)*fldperiod
464          fldcount = int(fldsecs/fldperiod) + 1
465        and were modified.
466    o autodiff: checkpoint_lev...
467      - updated storing for bulk formulae (some arrays were missing)
468      - added state for seaice package
469      - synchronized with main branch
470    o DIVA:
471      Modif.s in
472      - the_main_loop.F
473      - the_model_main.F
474      and added cost_final_restore.F cost_final_store.F
475      o With these changes, it is possible to fully separate
476        the first forward run to compute the cost function (mdthe_main_loop)
477        and adjoint runs over individual DIVA intervals (adthe_main_loop)
478        into separate model executions.
479        This enables better tuning of DIVA to given queue sizes.
480      o Loss of cost function value in consecutive DIVA runs is
481        fixed by storing to 'costfinal' file.
482      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
483        beginning/end of adjoint integration is accounted for.
484      The current changes apply to TAF-1.4.26.
485      TAF has one remaining bug, requiring one manual change
486      (see MITgcm manual).
487    o cal: synchronized between MAIN and ecco-branch
488    
489    checkpoint48i_post
490    o Changes to restore differentiability of code w.r.t. previous tag
491      (mostly adding new routines to make list and replacing
492      pressure by totPhiHyd).
493    o Updated and merged grdchk package
494      - has both ADM and TLM checks
495      - works for single- and multi-proc.
496      - output cleaned
497      - worked successfully for parallel DIVA
498    o genmake:
499      - Adding -platform=SP4
500      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
501    o Modif. for DIVA:
502      ctrl_unpack should not be called in intermediate DIVA interval.
503      (similar thing would apply for active files such as
504      tbar, sbar, psbar, which should not be reinitialised;
505      only relevant for ecco-branch)
506    
507    checkpoint48h_post
508    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
509    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
510    o Added SEAICE_initialHEFF to pkg/seaice
511    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
512    
513    checkpoint48g_post
514    --- EOS:
515    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
516      store total Potential in totPhyHyd for diagnostics & EOS.
517    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
518    --- Pressure/geopotential gradient:
519    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
520    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
521      ( changes results of global_ocean_pressure )
522    o NLFS + z-coord.: add eta*Rho' contribution.
523    o accurate phiHyd when using interface-W at the middle between 2 centers
524     ( changes results of ideal_2D_oce )
525    o includes r* 2nd term in potential gradient.
526    
527    checkpoint48f_post
528    Merging from release1_p12:
529    o Modifications for using pkg/exf with pkg/seaice
530      - improved description of the various forcing configurations
531      - added basic radiation bulk formulae to pkg/exf
532      - units/sign fix for evap computation in exf_getffields.F
533      - updated verification/global_with_exf/results/output.txt
534    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
535      (SBO) core products, including oceanic mass, center-of-mass,
536      angular, and bottom pressure (see pkg/sbo/README.sbo).
537    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
538      to avoid negative values in shallow regions.
539      - updated verification/natl_box/results/output.txt
540      - updated verification/lab_sea/results/output.txt
541    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
542    o Added useSingleCpuIO option (see PARAMS.h).
543    o Updated useSingleCpuIO option in mdsio_writefield.F to
544      work with multi-field files, e.g., for single-file pickup.
545    o pkg/seaice:
546      - bug fix in growth.F: QNET for no shortwave case
547      - added HeffFile for specifying initial sea-ice thickness
548      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
549    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
550      kpp_transport_t.F, forward_step.F, and the_main_loop.F
551    o pkg/seaice:
552      - adjoint-friendly modifications
553      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
554    
555    checkpoint48e_post
556    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
557    o dynamics: change definition of computational domain & adapt mom_fluxform
558      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
559    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
560        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
561        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
562        global_ocean.90x40x15 global_with_exf global_ocean_pressure
563        inverted_barometer solid-body.cs-32x32x1
564      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
565    
566    checkpoint48d_post
567    o in preparation for r*:
568     a) use pre-computed gradient of hydrostatic potential:
569        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
570     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
571        => affects results of glob_oce_pressure (different truncation error)  
572      update output.txt of ideal_2D_oce & global_ocean_pressure
573    
574    checkpoint48d_pre
575    o in preparation for r*:
576      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
577      pass the 2 comp. of the grad. as arguments to momentum S/R.
578      but for the moment, only used if it does not change the results.
579    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
580    
581  checkpoint48c_post  checkpoint48c_post
582  Modifications in treatment of initial flux forcing controls  Modifications in treatment of initial flux forcing controls
583  to avoid extra storing of flux fields.  to avoid extra storing of flux fields.

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