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revision 1.141 by heimbach, Fri Feb 28 05:21:22 2003 UTC revision 1.260 by jmc, Thu Feb 26 00:05:44 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o mask vorticity at the corner ; affects global_ocean.cs output
7    o fix ini_curvilinear_grid ; test CS experiments with mpi
8    o aim.5l_cs: modify sea-ice fraction input file ; update output
9    
10    checkpoint52k_post
11    o removed top-level directory "diags"
12      - we migrated these functions to pkg/timeave a long time ago
13    o fixed bug introduced in pkg/monitor
14    o accuracy ctrlprec = 32 insuffient for gradient checks using
15      averaged fields (I/O via cost_averages)
16      -> use ctrl.h in active_file*.F to control I/O precision.
17    o paramter list of CALL ADTHE_MAIN_LOOP
18    o added initial do_the_model_io to ecco
19    o set all ...Freq to zero after cost_final
20      taveFreq, dumpFreq, pChkptFreq
21    o MAIN and ECCO differentiability restored
22    
23    checkpoint52j_post
24    o fix nchklev in tamc.h for global_ocean...
25    o Bringing flow and store directives up-to-date
26    o Really weird thing!
27      call do_the_model_io from the_main_loop with parameters
28      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
29      TAF places a faulty re-call of initialise_varia
30      after cost_final call which should not be there!
31    checkpoint52j_pre
32    
33    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
34      error messages
35    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
36    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
37      debug output
38    o modfied mdsio_writefield.F to handle non-global files under exch2
39    o update AIM Cubed-Sphere exp (aim.5l_cs):
40      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
41    o update AIM Equatorial Channel exp:
42      use standard aim_v23 pkg and change the SST fields to be more realistic.
43    o globalFile now works with exch2
44    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
45      mon_vort3.F to make exch2 friendly with >1 tile per cube face
46    o limit timeave output for hi-res integrations
47    
48    checkpoint52i_post
49    o removed CPP_EEOPTIONS.h from verification/*/code
50    o updated the tiling for global_ocean_pressure
51    checkpoint52i_pre
52    
53    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
54      the old pkg/aim).
55    
56    checkpoint52h_pre
57    o shortened offending lines in exch2_send_rx?.template
58    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
59    o genmake2: add build & execute test for NetCDF code
60    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
61      old grid files, moved CPP_EEMACROS.h to pkg/exch2
62    o added useSingleCPUIO flag to monitor.F and mon_out.F
63    o added temporary hack for sea-ice dynamics on the cube:
64      metric terms are ignored and it is assumed that
65      there is no sea-ice on cube faces 1, 2, 4, and 5.
66    
67    checkpoint52f_post
68    o added exch2 cube routines to pkg/exch2
69    o modified hs94.cs-32x32x5 to use it
70    o added new grid files to hs94.cs-32x32x5
71    checkpoint52f_pre
72    
73    checkpoint52e_post
74    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
75      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
76    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
77      to work with implicit vertical advection and AB ;
78    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
79    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
80     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
81    checkpoint52e_pre
82    
83    o fix bug in impldiff when Nr=1 or Nr=2.
84    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
85    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
86    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
87      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
88    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
89    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
90    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
91    
92    checkpoint52d_post
93    o re-tiled many expts to allow comparison in multi-processor mode
94      - updated output accordingly
95      - changed hs94.128x64x5 to use intial T from file rather than use the
96        random number generator
97    o add infrastructure in model routines for fizhi and gridalt packages
98    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
99    o changes to permit hi-res, cubed-sphere, configuration
100      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
101      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
102      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
103        of surface winds for the cube
104      (A verification experiment, based on global_ocean.cs32x15, but with
105       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
106       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
107       complete with example surface forcing files and matlab scripts to look
108       at the output and compare it with that of global_ocean.cs32x15.)
109    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
110       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
111       to conform to the common rule.
112    o check-in the first version of the coupler + interfaces for multi-components
113       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
114       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
115       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
116       - ocean and atmos. share the same horizontal grid (no interpolation).
117       - exchanges between component and coupler is done in forward_step
118    o new verification experiment, cpl_aim+ocn:
119       coupled ocean - AIM atmosphere on cs32 grid.
120    
121    checkpoint52d_pre
122    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
123    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
124    
125    checkpoint52c_post
126    o Fixing OPTIONS files for use of exf:
127      - ALLOW_ECCO not needed
128      - ECCO_CPPOPTIONS.h should not be included from
129        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
130        as has been the case in the past
131      - All cal/exf related options are currently set in
132        single header file. Should remain so until we
133        agree on a consistent new policy.
134    o Removed all CPP options for cal package.
135      cal has no more CPP options.
136    o modified STOREs in GAD_ADVECTION
137    o corrected key comp. for passkey
138    
139    checkpoint52b_post
140    o new version: "thsice" of thermodynamic sea-ice pkg:
141     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
142     - modify fluxes but do not change theta directly;
143     - light cleaning of bulk_force pkg (still needed with thsice).
144     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
145       + output_thsice.txt to test thsice & bulk_force pkgs.
146    o put back grid & coriolis monitor output.
147    checkpoint52b_pre
148    
149    o call "do_the_model_io" at the beginning (=> dump initial state)
150    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
151    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
152      (need info on NUMBER_OF_PTRACERS)
153    o missing PTRACERS headers in some routines
154    o default tamc.h in pkg/autodiff supposed to crash
155      to ensure proper customization
156    
157    checkpoint52a_post
158    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
159      - moved surfaceTendencyTice from pkg/seaice to main code
160      - subroutine FREEZE_SURFACE now limits only surface temperature
161        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
162        => new output.txt for global_ocean.cs32x15 & global_with_exf
163      - keep the old version of FREEZE for backward compatibility;
164        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
165      - corresponding modifs for TAF directives
166    o added surface flux output variables to TIMEAVE_STATVARS
167    o time-averaged output for pkg/ptracers
168    o fix problem with ECCO-related divided adjoint
169      snapshot file was missing some ad-variables,
170      but no warning issued by TAF
171    
172    checkpoint52a_pre
173    o some bug fixes for #undef REAL4_IS_SLOW
174    
175    checkpoint52 = ecco_c52_e35
176    o after testing adjoints of checkpoint51u_post
177    
178    checkpoint51u_post
179    o this is the post-merge tag of the ecco-branch
180      (needs another clean checkout and re-testing)
181    o various natl_box_adjoint configs and results
182      but no input fields
183    o obcs adjoint not yet merged!
184    o adding ECCO global 1x1 and 2x2 degree configs
185    o updated/extended some store directives for seaice
186    o pkg/ecco now containes ecco-specific part of cost function
187    o top level routines the_main_loop, forward_step
188      supersede those in model/src/
189      previous input data.cost now in data.ecco
190      (new namelist ecco_cost_nml)
191    o in ctrl/ cleaned some cross-dependencies and updated CPP options
192    
193    checkpoint51t_post
194    o this is the pre-merge tag of the ecco-branch
195    
196    checkpoint51s_post
197    o cleanup: removed various obsolete #define-s
198    o pkg/grdchk
199      - renamed 'ph-grd 3' to 'grad-res'
200      - merged from ecco-branch
201        (remaining bug fixes for obcs gradient checks)
202      - additional high-precision output for testreport
203        (grep for 'precision_grdchk_result')
204    
205    checkpoint51r_post
206    o cleaned up or removed CPP_OPTIONS.h files
207    o updated results for some of the tests to reflect the new
208      optfiles (-ieee: -O0 instead of -O3)
209    
210    checkpoint51q_post
211    o cd_code:
212      - moved cd_scheme.F -> cd_code_scheme.F
213      - separate read_checkpoint from cd_code_ini_vars.F
214      - separated cd_code part from write_checkpoint
215      - updated AD_SOURCE, generated .flow
216      - added CD_CODE_VARS.h to the_main_loop
217      - Moving cd_code specific store dir.s to pkg/cd_code
218    o ctrl package totally restructured
219      - pack/unpack now optional and decoupled from
220        xx_/adxx_ I/O
221      - ctrl_pack/unpack cleaned
222        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
223      - confined inclusion of AD_CONFIG.h to where necessary.
224    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
225    
226    checkpoint51p_post
227    o create initial cd_code package
228      - WARNING: the initialization of fields within packages
229        is broken because INI_FIELDS (where READ_CHECKPOINT is
230        called) is called *before* PACKAGES_INIT_VARIABLES.
231        This seems to be backwards since
232        1) its important to initially zero the entire field including
233           the "halo" region
234        2) zeroing needs to be done *before* reading pickup info
235           and the pickup call might or might not happen in any
236           particular run
237      - this needs an overhaul for R2
238    o cleanup verification/*/code/GMREDI_OPTIONS.h
239    o cleanup testreport
240    
241    checkpoint51o_post
242    o bringing AD-related verif's up to date with genmake2
243      - carbon/
244      - global_ocean.90x40x15/
245      - hs.94.1x64x5/
246      - (front_relax/ )
247    o (more) consistent directory structure for AD-related verif.'s
248    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
249    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
250    o bug fix in find_alpha.F for MDJWF:
251      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
252        change rho -> rho-rhoConst
253      - replace call find_rho to find_rhonum
254    o initialisation of rFlx extended to full array (required by TAF)
255      and shifted to thermodynamics
256    o removed PTRACERS.h in ptracers routine
257    o added surfacetendencyPtr to S/R parameter list pracers_forcing
258    o Correcting initialisations for fVerU, fVerV.
259    o helping TAF to recognize dependency on kUp for
260      fVerU, fVerV
261    o Replacing delZ by delR in pkg/ctrl/
262    checkpoint51o_pre
263    
264    o undid all of cp51 pending some cleanups and discussion
265    o added the [#include "AD_CONFIG.h"] statement to all files that need
266       it for adjoint/tl #defines
267     o re-worked the build logic in genmake2 to support AD_CONFIG.h
268     o removed tools/genmake since it no longer works
269    
270    checkpoint51n_post
271    o modifications to make FREEZE flux visible to pkg/kpp
272      - moved surfaceTendencyTice from pkg/seaice to main code
273      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
274      - subroutine FREEZE now limits only surface temperature
275        (this means new output.txt for global_ocean.90x40x15,
276         global_ocean.cs32x15, and global_with_exf)
277    o added surface flux output variables to TIMEAVE_STATVARS
278    
279    checkpoint51n_pre
280    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
281    o added [#include "AD_CONFIG.h"] to all files that use the following
282      defines:
283      - ALLOW_ADJOINT_RUN
284      - ALLOW_TANGENTLINEAR_RUN
285      - ALLOW_ECCO_OPTIMIZATION
286    
287    checkpoint51m_post
288    o incorporating changes to get TAMC/TAF working in genmake2
289      - added new TAMC/TAF targets to the Makefile
290      - various cleanups related to package handling
291      - these changes should have no impact on the forward model
292    
293    checkpoint51l_post
294    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
295     - faster algorithm for cal_addtime.F
296     - higher precision arithmetic, where needed
297     - pkg/exf *startdate variables changed from calendar date to
298       model integration time
299    
300    checkpoint51l_pre
301    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
302    o enable to apply restoring on S & T only in a latitude band.
303    o update output (external_forcing_surf modif. change truncation errors)
304       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
305    
306    checkpoint51k_post
307    o change default to: useNHMTerms=.FALSE.
308     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
309       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
310     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
311        exp1, ideal_2D_oce
312     - change data file of oceanic exp (leave the results unchanged for now)
313       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
314    o set gravitySign automatically according to the vertical coordinate used
315      (and change sign: back to "logical" value: +1 when R increases downward)
316    o added an include barrier to the default CPP_OPTIONS.h and
317      removed the #include "PACKAGES_CONFIG.h" from it
318    o fix a bug in mom_fluxform (from chk51j_post)
319    
320    checkpoint51j_post
321    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
322    o adjusted some flow directives (dynamics, thermodynamics)
323    o added cubed-sphere case to test cost function
324    o heckpoint_lev?_directives.h now include
325      pkg-specific directives, whenever those are enabled.
326    o Moving pkg-specific flow directives to corresponding pkg
327      Moving pkg-specific differentiation list to corresponding pkg
328      Moving pkg-specific checkpoint-lev storing to corresponding pkg
329      ---> conventions are
330           - pkg_ad.flow
331           - pkg_ad_diff.list
332           - pkg_ad_check_lev?_dir.h
333    
334    checkpoint51i_post
335    o merge of the branch-genmake2
336      - knowingly breaks the older genmake
337      - automatic generation of all ALLOW_${PKG_NAME} defines
338      - new testreport supersedes older testscript
339    o large number of package inclusion and header cleanups
340    checkpoint51i_pre
341    
342    o new output for adjoin of global ocean vector invariant
343    o fix for checkpoint of thermodynamic seaice and bulk_force
344    o Steph gchem various cleanups
345    
346    checkpoint 51h_pre
347    o fixed some single quotes
348    o modify gchem pkg to be more versatile
349    o modifications to clean up dic pkg
350    o add pkg/cfc
351    
352    checkpoint51g_post
353    o provide links for ARPACK and ADM*TLM
354    o start removing verification/vero/
355    o update AD-related stuff
356      (in particular some IF-statements in model/src/ routines)
357    o adding to verification/global_ocean.90x40x15/ adjoint of
358      vector invariant setup
359    
360    checkpoint51f_post
361    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
362    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
363      of tracer Green's fucntions for ocean inversion project.
364    
365    checkpoint51f_pre
366    o Added on-the-fly spatial interpolation capability
367        "USE_EXF_INTERPOLATION" to pkg/exf.
368      - This is a temporary Cartesian-grid hack until
369        the super-duper ESMF coupler becomes available.
370      - See verification/global_with_exf/README for usage example.
371      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
372        flags and modified pkg/seaice accordingly.
373    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
374        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
375        non-local transport term.
376    
377    checkpoint51e_post
378    o pkg/mom_vecinv:
379      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
380      - add time-ave diagnostic of vorticity advection.
381    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
382    o atmospheric geopotential: - include water vapor effect;
383                                - use p^kappa in p* scaling.
384    o land pkg: read initial state from files.
385    o AIM : add stratospheric drag in the upper level
386    
387    checkpoint51d_post
388    o change function ILNBLNK (=> last non-blank char.) to return zero
389      (instead of the string length) when the string. char is empty
390    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
391    o modif's to restore TAMC compatibility
392      - avoid "_d" constructs in PARAMETER declarations
393      - avoid interrupting lines by comment lines
394    o Use cluster local disks for purely local I/O
395      vs. globally visible disks needed for ctrl stuff
396      (merged from ecco-branch)
397      - new active_file_loc... and mdsio_..._loc routines
398      - affected packages: autodiff, ctrl, grdchk, mdsio
399    
400    checkpoint51c_post
401    o introducing integer flag debugLevel
402      - debLevZero: suppress all output
403      - debLevA: standard
404      - debLevB: equivalent to current debugMode=.TRUE.
405    o introducing pathname variable mdsioLocalDir for mdsio
406      that can be specified at runtime
407      (relevant for cluster I/O to local disk)
408    `
409    >>>checkpoint51b_post
410    adjoint of ptracers
411    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
412    o extended state in checkpoint_lev?, etc.
413    o alternative ctrl/cost with tr1 or ptracer
414    o new comlev1_bibj_ptracers
415    o new ptracers.flow
416    o made ptracers_forcing same as external_forcing_s
417    o added verification for adjoint with ptracers
418      - adm. grdchk fail so far
419      - tlm. grdchk OK
420      - checked tapelev/comlev recomputations: OK
421    <<<checkpoint51b_pre
422    
423    checkpoint51a_post
424    o added code for biogeochemistry package
425      - new pkgs: dic, gchem
426      - new subroutine in ptracers
427    o modify code for biogeo packages
428      - in model/src and pkg/ptracers
429    
430    checkpoint51
431    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
432      - autodiff, ctrl, exf, grdchk, seaice
433      kept separate packages
434      - cost, ecco, obcs
435    o updating verification/internal_wave, verification/lab_sea
436      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
437    
438    checkpoint50i_post
439    o Preparing next differentiable checkpoint and sync
440      of MAIN vs. ecco-branch
441      - 1st step: this one is differentiable
442      - 2nd step: next(! not this) checkpoint will have updated packages
443                  from ecco-branch)
444    
445    checkpoint50h_post
446    o new package "land": provide surface BC for AIM.
447    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
448    o AIM: use true log-P extrapolation for near surface temp (= as in
449        F.Molteni paper) ; update aim.5l_cs output.
450    o New variable in PARM03 for more flexible pickups
451    o somewhat cleaned package initialisation sequence for
452      ctrl/ cost/ ecco/ in packages_... routines
453    
454    checkpoint50g_post
455    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
456      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
457      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
458        made the default because of faster convergence than ADI
459    
460    checkpoint50f_post
461    o exf totally restructured
462      - replaced all exf_set_ routines by one generic exf_set_gen.F
463        and made sure it's still differentiable
464      - split exf_getffields.F into new exf_bulkformulae.F
465      - exf_inscal_/exf_outscal_ suffixes consistent with field names
466      - updated adjoint/makefile and relevant verif. accordingly
467    
468    checkpoint50f_pre
469     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
470          + change Evap over land. (update aim.5l_cs output)
471     o added missing .cvsignores and made uniform across expts
472     o changed configuration of tidal_basin_2d expt
473     o added pkg/debug functions for tracing code in fatal crashes
474     o tidied pkg/monitor to use MONITOR_OPTIONS.h
475     o new fn in pkg/monitor to stop model if solution grows too big
476     o removed lots of single quotes from comments
477    
478    checkpoint50e_post
479    o make KPP work with PTRACERS
480     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
481       nearly a copy of kpp_transport_s
482     - there is no analogue to SurfaceTendencyS, so I have to use
483       gPtr(of the surface layer) instead
484    o add a new platform SunFire+mpi (SunFire 15000) to genmake
485    checkpoint50e_pre
486    
487    checkpoint50d_post
488    o change kpp output from multiple-record state files to single-record state
489      files analogous to write_state.F
490    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
491      analogous to the cg2d-related output.
492    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
493      so that writing to internal file fn (with length 512) fails.
494    checkpoint50d_pre
495    
496    checkpoint50c_post
497    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
498    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
499    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
500    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
501    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
502    
503    checkpoint50c_pre
504    Merging from release1_p13:
505    o bug fix for pkg/seaice dynamic solver
506    o Added SEAICE_initialHEFF to pkg/seaice
507    
508    checkpoint50b_post
509    o store u*,v* in gU,V instead of in guNm1,gvNm1
510    o in order to put the momForcing out of the Adams-Bashforth:
511      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
512      to timestep.F
513    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
514    o re-generate output for highly sensitive test-exp:
515       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
516    
517    checkpoint50b_pre
518    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
519    o corrected CPP option mismatch in exf_Bulk... functions for case
520      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
521    
522    checkpoint50a_post
523    o Bug fix for merging between c50 and KPP.
524      ikey was passed from thermodynamics to kpp_calc via
525      common block rather than being recomputed in kpp_calc,
526      in contradiction with new key itdkey.
527      New key ikppkey created, and tamc.h headers updated.
528    
529    checkpoint50
530    - 2nd step of merge with ecco-branch:
531      merge changes in ecco-branch back into main trunk
532    - bug fix in find_alpha
533    - more storing in gmredi_calc_tensor.F, kpp_routines.F
534    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
535    - merged some sliced AD support routines
536    
537  checkpoint49  checkpoint49
538    merged from ecco-branch:
539    o exf:
540      - Enable initialisation of forcing fields to constant
541        (runtime) values.
542      - in exf_getffields.F
543        Reduce i-/j-loop to interior domain, discarding overlaps.
544        That also fixes wrong TAF-key computations for key_1, key_2
545        with bulf formulae.
546      - exf_init.F modify #ifdef for exf_init_evap
547      - exf_getffieldrec.F, ctrl_getrec.F
548        The following INT-usages are not safe:
549          fldsecs  = int(fldsecs/fldperiod)*fldperiod
550          fldcount = int(fldsecs/fldperiod) + 1
551        and were modified.
552    o autodiff: checkpoint_lev...
553      - updated storing for bulk formulae (some arrays were missing)
554      - added state for seaice package
555      - synchronized with main branch
556    o DIVA:
557      Modif.s in
558      - the_main_loop.F
559      - the_model_main.F
560      and added cost_final_restore.F cost_final_store.F
561      o With these changes, it is possible to fully separate
562        the first forward run to compute the cost function (mdthe_main_loop)
563        and adjoint runs over individual DIVA intervals (adthe_main_loop)
564        into separate model executions.
565        This enables better tuning of DIVA to given queue sizes.
566      o Loss of cost function value in consecutive DIVA runs is
567        fixed by storing to 'costfinal' file.
568      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
569        beginning/end of adjoint integration is accounted for.
570      The current changes apply to TAF-1.4.26.
571      TAF has one remaining bug, requiring one manual change
572      (see MITgcm manual).
573    o cal: synchronized between MAIN and ecco-branch
574    
575    checkpoint48i_post
576  o Changes to restore differentiability of code w.r.t. previous tag  o Changes to restore differentiability of code w.r.t. previous tag
577    (mostly adding new routines to make list and replacing    (mostly adding new routines to make list and replacing
578    pressure by totPhiHyd).    pressure by totPhiHyd).

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