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revision 1.121 by heimbach, Tue Jan 21 19:44:45 2003 UTC revision 1.216 by heimbach, Thu Dec 4 19:43:03 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52c_post
7    o Fixing OPTIONS files for use of exf:
8      - ALLOW_ECCO not needed
9      - ECCO_CPPOPTIONS.h should not be included from
10        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
11        as has been the case in the past
12      - All cal/exf related options are currently set in
13        single header file. Should remain so until we
14        agree on a consistent new policy.
15    o Removed all CPP options for cal package.
16      cal has no more CPP options.
17    o modified STOREs in GAD_ADVECTION
18    o corrected key comp. for passkey
19    
20    checkpoint52b_post
21    o new version: "thsice" of thermodynamic sea-ice pkg:
22     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
23     - modify fluxes but do not change theta directly;
24     - light cleaning of bulk_force pkg (still needed with thsice).
25     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
26       + output_thsice.txt to test thsice & bulk_force pkgs.
27    o put back grid & coriolis monitor output.
28    checkpoint52b_pre
29    
30    o call "do_the_model_io" at the beginning (=> dump initial state)
31    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
32    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
33      (need info on NUMBER_OF_PTRACERS)
34    o missing PTRACERS headers in some routines
35    o default tamc.h in pkg/autodiff supposed to crash
36      to ensure proper customization
37    
38    checkpoint52a_post
39    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
40      - moved surfaceTendencyTice from pkg/seaice to main code
41      - subroutine FREEZE_SURFACE now limits only surface temperature
42        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
43        => new output.txt for global_ocean.cs32x15 & global_with_exf
44      - keep the old version of FREEZE for backward compatibility;
45        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
46      - corresponding modifs for TAF directives
47    o added surface flux output variables to TIMEAVE_STATVARS
48    o time-averaged output for pkg/ptracers
49    o fix problem with ECCO-related divided adjoint
50      snapshot file was missing some ad-variables,
51      but no warning issued by TAF
52    
53    checkpoint52a_pre
54    o some bug fixes for #undef REAL4_IS_SLOW
55    
56    checkpoint52 = ecco_c52_e35
57    o after testing adjoints of checkpoint51u_post
58    
59    checkpoint51u_post
60    o this is the post-merge tag of the ecco-branch
61      (needs another clean checkout and re-testing)
62    o various natl_box_adjoint configs and results
63      but no input fields
64    o obcs adjoint not yet merged!
65    o adding ECCO global 1x1 and 2x2 degree configs
66    o updated/extended some store directives for seaice
67    o pkg/ecco now containes ecco-specific part of cost function
68    o top level routines the_main_loop, forward_step
69      supersede those in model/src/
70      previous input data.cost now in data.ecco
71      (new namelist ecco_cost_nml)
72    o in ctrl/ cleaned some cross-dependencies and updated CPP options
73    
74    checkpoint51t_post
75    o this is the pre-merge tag of the ecco-branch
76    
77    checkpoint51s_post
78    o cleanup: removed various obsolete #define-s
79    o pkg/grdchk
80      - renamed 'ph-grd 3' to 'grad-res'
81      - merged from ecco-branch
82        (remaining bug fixes for obcs gradient checks)
83      - additional high-precision output for testreport
84        (grep for 'precision_grdchk_result')
85    
86    checkpoint51r_post
87    o cleaned up or removed CPP_OPTIONS.h files
88    o updated results for some of the tests to reflect the new
89      optfiles (-ieee: -O0 instead of -O3)
90    
91    checkpoint51q_post
92    o cd_code:
93      - moved cd_scheme.F -> cd_code_scheme.F
94      - separate read_checkpoint from cd_code_ini_vars.F
95      - separated cd_code part from write_checkpoint
96      - updated AD_SOURCE, generated .flow
97      - added CD_CODE_VARS.h to the_main_loop
98      - Moving cd_code specific store dir.s to pkg/cd_code
99    o ctrl package totally restructured
100      - pack/unpack now optional and decoupled from
101        xx_/adxx_ I/O
102      - ctrl_pack/unpack cleaned
103        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
104      - confined inclusion of AD_CONFIG.h to where necessary.
105    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
106    
107    checkpoint51p_post
108    o create initial cd_code package
109      - WARNING: the initialization of fields within packages
110        is broken because INI_FIELDS (where READ_CHECKPOINT is
111        called) is called *before* PACKAGES_INIT_VARIABLES.
112        This seems to be backwards since
113        1) its important to initially zero the entire field including
114           the "halo" region
115        2) zeroing needs to be done *before* reading pickup info
116           and the pickup call might or might not happen in any
117           particular run
118      - this needs an overhaul for R2
119    o cleanup verification/*/code/GMREDI_OPTIONS.h
120    o cleanup testreport
121    
122    checkpoint51o_post
123    o bringing AD-related verif's up to date with genmake2
124      - carbon/
125      - global_ocean.90x40x15/
126      - hs.94.1x64x5/
127      - (front_relax/ )
128    o (more) consistent directory structure for AD-related verif.'s
129    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
130    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
131    o bug fix in find_alpha.F for MDJWF:
132      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
133        change rho -> rho-rhoConst
134      - replace call find_rho to find_rhonum
135    o initialisation of rFlx extended to full array (required by TAF)
136      and shifted to thermodynamics
137    o removed PTRACERS.h in ptracers routine
138    o added surfacetendencyPtr to S/R parameter list pracers_forcing
139    o Correcting initialisations for fVerU, fVerV.
140    o helping TAF to recognize dependency on kUp for
141      fVerU, fVerV
142    o Replacing delZ by delR in pkg/ctrl/
143    checkpoint51o_pre
144    
145    o undid all of cp51 pending some cleanups and discussion
146    o added the [#include "AD_CONFIG.h"] statement to all files that need
147       it for adjoint/tl #defines
148     o re-worked the build logic in genmake2 to support AD_CONFIG.h
149     o removed tools/genmake since it no longer works
150    
151    checkpoint51n_post
152    o modifications to make FREEZE flux visible to pkg/kpp
153      - moved surfaceTendencyTice from pkg/seaice to main code
154      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
155      - subroutine FREEZE now limits only surface temperature
156        (this means new output.txt for global_ocean.90x40x15,
157         global_ocean.cs32x15, and global_with_exf)
158    o added surface flux output variables to TIMEAVE_STATVARS
159    
160    checkpoint51n_pre
161    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
162    o added [#include "AD_CONFIG.h"] to all files that use the following
163      defines:
164      - ALLOW_ADJOINT_RUN
165      - ALLOW_TANGENTLINEAR_RUN
166      - ALLOW_ECCO_OPTIMIZATION
167    
168    checkpoint51m_post
169    o incorporating changes to get TAMC/TAF working in genmake2
170      - added new TAMC/TAF targets to the Makefile
171      - various cleanups related to package handling
172      - these changes should have no impact on the forward model
173    
174    checkpoint51l_post
175    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
176     - faster algorithm for cal_addtime.F
177     - higher precision arithmetic, where needed
178     - pkg/exf *startdate variables changed from calendar date to
179       model integration time
180    
181    checkpoint51l_pre
182    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
183    o enable to apply restoring on S & T only in a latitude band.
184    o update output (external_forcing_surf modif. change truncation errors)
185       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
186    
187    checkpoint51k_post
188    o change default to: useNHMTerms=.FALSE.
189     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
190       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
191     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
192        exp1, ideal_2D_oce
193     - change data file of oceanic exp (leave the results unchanged for now)
194       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
195    o set gravitySign automatically according to the vertical coordinate used
196      (and change sign: back to "logical" value: +1 when R increases downward)
197    o added an include barrier to the default CPP_OPTIONS.h and
198      removed the #include "PACKAGES_CONFIG.h" from it
199    o fix a bug in mom_fluxform (from chk51j_post)
200    
201    checkpoint51j_post
202    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
203    o adjusted some flow directives (dynamics, thermodynamics)
204    o added cubed-sphere case to test cost function
205    o heckpoint_lev?_directives.h now include
206      pkg-specific directives, whenever those are enabled.
207    o Moving pkg-specific flow directives to corresponding pkg
208      Moving pkg-specific differentiation list to corresponding pkg
209      Moving pkg-specific checkpoint-lev storing to corresponding pkg
210      ---> conventions are
211           - pkg_ad.flow
212           - pkg_ad_diff.list
213           - pkg_ad_check_lev?_dir.h
214    
215    checkpoint51i_post
216    o merge of the branch-genmake2
217      - knowingly breaks the older genmake
218      - automatic generation of all ALLOW_${PKG_NAME} defines
219      - new testreport supersedes older testscript
220    o large number of package inclusion and header cleanups
221    checkpoint51i_pre
222    
223    o new output for adjoin of global ocean vector invariant
224    o fix for checkpoint of thermodynamic seaice and bulk_force
225    o Steph gchem various cleanups
226    
227    checkpoint 51h_pre
228    o fixed some single quotes
229    o modify gchem pkg to be more versatile
230    o modifications to clean up dic pkg
231    o add pkg/cfc
232    
233    checkpoint51g_post
234    o provide links for ARPACK and ADM*TLM
235    o start removing verification/vero/
236    o update AD-related stuff
237      (in particular some IF-statements in model/src/ routines)
238    o adding to verification/global_ocean.90x40x15/ adjoint of
239      vector invariant setup
240    
241    checkpoint51f_post
242    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
243    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
244      of tracer Green's fucntions for ocean inversion project.
245    
246    checkpoint51f_pre
247    o Added on-the-fly spatial interpolation capability
248        "USE_EXF_INTERPOLATION" to pkg/exf.
249      - This is a temporary Cartesian-grid hack until
250        the super-duper ESMF coupler becomes available.
251      - See verification/global_with_exf/README for usage example.
252      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
253        flags and modified pkg/seaice accordingly.
254    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
255        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
256        non-local transport term.
257    
258    checkpoint51e_post
259    o pkg/mom_vecinv:
260      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
261      - add time-ave diagnostic of vorticity advection.
262    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
263    o atmospheric geopotential: - include water vapor effect;
264                                - use p^kappa in p* scaling.
265    o land pkg: read initial state from files.
266    o AIM : add stratospheric drag in the upper level
267    
268    checkpoint51d_post
269    o change function ILNBLNK (=> last non-blank char.) to return zero
270      (instead of the string length) when the string. char is empty
271    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
272    o modif's to restore TAMC compatibility
273      - avoid "_d" constructs in PARAMETER declarations
274      - avoid interrupting lines by comment lines
275    o Use cluster local disks for purely local I/O
276      vs. globally visible disks needed for ctrl stuff
277      (merged from ecco-branch)
278      - new active_file_loc... and mdsio_..._loc routines
279      - affected packages: autodiff, ctrl, grdchk, mdsio
280    
281    checkpoint51c_post
282    o introducing integer flag debugLevel
283      - debLevZero: suppress all output
284      - debLevA: standard
285      - debLevB: equivalent to current debugMode=.TRUE.
286    o introducing pathname variable mdsioLocalDir for mdsio
287      that can be specified at runtime
288      (relevant for cluster I/O to local disk)
289    `
290    >>>checkpoint51b_post
291    adjoint of ptracers
292    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
293    o extended state in checkpoint_lev?, etc.
294    o alternative ctrl/cost with tr1 or ptracer
295    o new comlev1_bibj_ptracers
296    o new ptracers.flow
297    o made ptracers_forcing same as external_forcing_s
298    o added verification for adjoint with ptracers
299      - adm. grdchk fail so far
300      - tlm. grdchk OK
301      - checked tapelev/comlev recomputations: OK
302    <<<checkpoint51b_pre
303    
304    checkpoint51a_post
305    o added code for biogeochemistry package
306      - new pkgs: dic, gchem
307      - new subroutine in ptracers
308    o modify code for biogeo packages
309      - in model/src and pkg/ptracers
310    
311    checkpoint51
312    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
313      - autodiff, ctrl, exf, grdchk, seaice
314      kept separate packages
315      - cost, ecco, obcs
316    o updating verification/internal_wave, verification/lab_sea
317      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
318    
319    checkpoint50i_post
320    o Preparing next differentiable checkpoint and sync
321      of MAIN vs. ecco-branch
322      - 1st step: this one is differentiable
323      - 2nd step: next(! not this) checkpoint will have updated packages
324                  from ecco-branch)
325    
326    checkpoint50h_post
327    o new package "land": provide surface BC for AIM.
328    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
329    o AIM: use true log-P extrapolation for near surface temp (= as in
330        F.Molteni paper) ; update aim.5l_cs output.
331    o New variable in PARM03 for more flexible pickups
332    o somewhat cleaned package initialisation sequence for
333      ctrl/ cost/ ecco/ in packages_... routines
334    
335    checkpoint50g_post
336    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
337      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
338      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
339        made the default because of faster convergence than ADI
340    
341    checkpoint50f_post
342    o exf totally restructured
343      - replaced all exf_set_ routines by one generic exf_set_gen.F
344        and made sure it's still differentiable
345      - split exf_getffields.F into new exf_bulkformulae.F
346      - exf_inscal_/exf_outscal_ suffixes consistent with field names
347      - updated adjoint/makefile and relevant verif. accordingly
348    
349    checkpoint50f_pre
350     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
351          + change Evap over land. (update aim.5l_cs output)
352     o added missing .cvsignores and made uniform across expts
353     o changed configuration of tidal_basin_2d expt
354     o added pkg/debug functions for tracing code in fatal crashes
355     o tidied pkg/monitor to use MONITOR_OPTIONS.h
356     o new fn in pkg/monitor to stop model if solution grows too big
357     o removed lots of single quotes from comments
358    
359    checkpoint50e_post
360    o make KPP work with PTRACERS
361     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
362       nearly a copy of kpp_transport_s
363     - there is no analogue to SurfaceTendencyS, so I have to use
364       gPtr(of the surface layer) instead
365    o add a new platform SunFire+mpi (SunFire 15000) to genmake
366    checkpoint50e_pre
367    
368    checkpoint50d_post
369    o change kpp output from multiple-record state files to single-record state
370      files analogous to write_state.F
371    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
372      analogous to the cg2d-related output.
373    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
374      so that writing to internal file fn (with length 512) fails.
375    checkpoint50d_pre
376    
377    checkpoint50c_post
378    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
379    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
380    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
381    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
382    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
383    
384    checkpoint50c_pre
385    Merging from release1_p13:
386    o bug fix for pkg/seaice dynamic solver
387    o Added SEAICE_initialHEFF to pkg/seaice
388    
389    checkpoint50b_post
390    o store u*,v* in gU,V instead of in guNm1,gvNm1
391    o in order to put the momForcing out of the Adams-Bashforth:
392      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
393      to timestep.F
394    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
395    o re-generate output for highly sensitive test-exp:
396       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
397    
398    checkpoint50b_pre
399    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
400    o corrected CPP option mismatch in exf_Bulk... functions for case
401      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
402    
403    checkpoint50a_post
404    o Bug fix for merging between c50 and KPP.
405      ikey was passed from thermodynamics to kpp_calc via
406      common block rather than being recomputed in kpp_calc,
407      in contradiction with new key itdkey.
408      New key ikppkey created, and tamc.h headers updated.
409    
410    checkpoint50
411    - 2nd step of merge with ecco-branch:
412      merge changes in ecco-branch back into main trunk
413    - bug fix in find_alpha
414    - more storing in gmredi_calc_tensor.F, kpp_routines.F
415    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
416    - merged some sliced AD support routines
417    
418    checkpoint49
419    merged from ecco-branch:
420    o exf:
421      - Enable initialisation of forcing fields to constant
422        (runtime) values.
423      - in exf_getffields.F
424        Reduce i-/j-loop to interior domain, discarding overlaps.
425        That also fixes wrong TAF-key computations for key_1, key_2
426        with bulf formulae.
427      - exf_init.F modify #ifdef for exf_init_evap
428      - exf_getffieldrec.F, ctrl_getrec.F
429        The following INT-usages are not safe:
430          fldsecs  = int(fldsecs/fldperiod)*fldperiod
431          fldcount = int(fldsecs/fldperiod) + 1
432        and were modified.
433    o autodiff: checkpoint_lev...
434      - updated storing for bulk formulae (some arrays were missing)
435      - added state for seaice package
436      - synchronized with main branch
437    o DIVA:
438      Modif.s in
439      - the_main_loop.F
440      - the_model_main.F
441      and added cost_final_restore.F cost_final_store.F
442      o With these changes, it is possible to fully separate
443        the first forward run to compute the cost function (mdthe_main_loop)
444        and adjoint runs over individual DIVA intervals (adthe_main_loop)
445        into separate model executions.
446        This enables better tuning of DIVA to given queue sizes.
447      o Loss of cost function value in consecutive DIVA runs is
448        fixed by storing to 'costfinal' file.
449      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
450        beginning/end of adjoint integration is accounted for.
451      The current changes apply to TAF-1.4.26.
452      TAF has one remaining bug, requiring one manual change
453      (see MITgcm manual).
454    o cal: synchronized between MAIN and ecco-branch
455    
456    checkpoint48i_post
457    o Changes to restore differentiability of code w.r.t. previous tag
458      (mostly adding new routines to make list and replacing
459      pressure by totPhiHyd).
460    o Updated and merged grdchk package
461      - has both ADM and TLM checks
462      - works for single- and multi-proc.
463      - output cleaned
464      - worked successfully for parallel DIVA
465    o genmake:
466      - Adding -platform=SP4
467      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
468    o Modif. for DIVA:
469      ctrl_unpack should not be called in intermediate DIVA interval.
470      (similar thing would apply for active files such as
471      tbar, sbar, psbar, which should not be reinitialised;
472      only relevant for ecco-branch)
473    
474    checkpoint48h_post
475    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
476    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
477    o Added SEAICE_initialHEFF to pkg/seaice
478    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
479    
480    checkpoint48g_post
481    --- EOS:
482    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
483      store total Potential in totPhyHyd for diagnostics & EOS.
484    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
485    --- Pressure/geopotential gradient:
486    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
487    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
488      ( changes results of global_ocean_pressure )
489    o NLFS + z-coord.: add eta*Rho' contribution.
490    o accurate phiHyd when using interface-W at the middle between 2 centers
491     ( changes results of ideal_2D_oce )
492    o includes r* 2nd term in potential gradient.
493    
494    checkpoint48f_post
495    Merging from release1_p12:
496    o Modifications for using pkg/exf with pkg/seaice
497      - improved description of the various forcing configurations
498      - added basic radiation bulk formulae to pkg/exf
499      - units/sign fix for evap computation in exf_getffields.F
500      - updated verification/global_with_exf/results/output.txt
501    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
502      (SBO) core products, including oceanic mass, center-of-mass,
503      angular, and bottom pressure (see pkg/sbo/README.sbo).
504    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
505      to avoid negative values in shallow regions.
506      - updated verification/natl_box/results/output.txt
507      - updated verification/lab_sea/results/output.txt
508    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
509    o Added useSingleCpuIO option (see PARAMS.h).
510    o Updated useSingleCpuIO option in mdsio_writefield.F to
511      work with multi-field files, e.g., for single-file pickup.
512    o pkg/seaice:
513      - bug fix in growth.F: QNET for no shortwave case
514      - added HeffFile for specifying initial sea-ice thickness
515      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
516    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
517      kpp_transport_t.F, forward_step.F, and the_main_loop.F
518    o pkg/seaice:
519      - adjoint-friendly modifications
520      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
521    
522    checkpoint48e_post
523    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
524    o dynamics: change definition of computational domain & adapt mom_fluxform
525      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
526    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
527        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
528        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
529        global_ocean.90x40x15 global_with_exf global_ocean_pressure
530        inverted_barometer solid-body.cs-32x32x1
531      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
532    
533    checkpoint48d_post
534    o in preparation for r*:
535     a) use pre-computed gradient of hydrostatic potential:
536        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
537     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
538        => affects results of glob_oce_pressure (different truncation error)  
539      update output.txt of ideal_2D_oce & global_ocean_pressure
540    
541    checkpoint48d_pre
542    o in preparation for r*:
543      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
544      pass the 2 comp. of the grad. as arguments to momentum S/R.
545      but for the moment, only used if it does not change the results.
546    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
547    
548    checkpoint48c_post
549    Modifications in treatment of initial flux forcing controls
550    to avoid extra storing of flux fields.
551    
552    checkpoint48c_pre
553    o Added tidal_basin_2d experiment (currently 1D!)
554    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
555    
556    checkpoint48b_post
557    o r* coordinate added in #ifdef NONLIN_FRSURF block.
558     (modification to pressure gradient not yet implemented)
559    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
560      (for U & V) that are used for vertical advection of momentum.
561    
562    checkpoint48a_post
563    o In preparation for r*, use temp. array to compute vertical transport
564       in flux-form momentum pkg. => change results of few test-exp.
565      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
566                        lab_sea, natl_box & plume_on_slope
567    
568    checkpoint48
569    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
570    
571  checkpoint47j_post  checkpoint47j_post
572  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.  o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
573  o moved adexch from forward_step to addummy_in_stepping  o moved adexch from forward_step to addummy_in_stepping

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