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revision 1.47 by heimbach, Tue Aug 21 16:38:41 2001 UTC revision 1.223 by jmc, Sun Dec 14 23:30:13 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 change global_ocean.cs32x15 because of Pb with GM on CS-grid.
7    o changes to permit hi-res, cubed-sphere, configuration
8      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
9      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
10      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
11        of surface winds for the cube
12      (A verification experiment, based on global_ocean.cs32x15, but with
13       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
14       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
15       complete with example surface forcing files and matlab scripts to look
16       at the output and compare it with that of global_ocean.cs32x15.)
17    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
18       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
19       to conform to the common rule.
20    
21    checkpoint52d_pre
22    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
23    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
24    
25    checkpoint52c_post
26    o Fixing OPTIONS files for use of exf:
27      - ALLOW_ECCO not needed
28      - ECCO_CPPOPTIONS.h should not be included from
29        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
30        as has been the case in the past
31      - All cal/exf related options are currently set in
32        single header file. Should remain so until we
33        agree on a consistent new policy.
34    o Removed all CPP options for cal package.
35      cal has no more CPP options.
36    o modified STOREs in GAD_ADVECTION
37    o corrected key comp. for passkey
38    
39    checkpoint52b_post
40    o new version: "thsice" of thermodynamic sea-ice pkg:
41     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
42     - modify fluxes but do not change theta directly;
43     - light cleaning of bulk_force pkg (still needed with thsice).
44     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
45       + output_thsice.txt to test thsice & bulk_force pkgs.
46    o put back grid & coriolis monitor output.
47    checkpoint52b_pre
48    
49    o call "do_the_model_io" at the beginning (=> dump initial state)
50    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
51    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
52      (need info on NUMBER_OF_PTRACERS)
53    o missing PTRACERS headers in some routines
54    o default tamc.h in pkg/autodiff supposed to crash
55      to ensure proper customization
56    
57    checkpoint52a_post
58    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
59      - moved surfaceTendencyTice from pkg/seaice to main code
60      - subroutine FREEZE_SURFACE now limits only surface temperature
61        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
62        => new output.txt for global_ocean.cs32x15 & global_with_exf
63      - keep the old version of FREEZE for backward compatibility;
64        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
65      - corresponding modifs for TAF directives
66    o added surface flux output variables to TIMEAVE_STATVARS
67    o time-averaged output for pkg/ptracers
68    o fix problem with ECCO-related divided adjoint
69      snapshot file was missing some ad-variables,
70      but no warning issued by TAF
71    
72    checkpoint52a_pre
73    o some bug fixes for #undef REAL4_IS_SLOW
74    
75    checkpoint52 = ecco_c52_e35
76    o after testing adjoints of checkpoint51u_post
77    
78    checkpoint51u_post
79    o this is the post-merge tag of the ecco-branch
80      (needs another clean checkout and re-testing)
81    o various natl_box_adjoint configs and results
82      but no input fields
83    o obcs adjoint not yet merged!
84    o adding ECCO global 1x1 and 2x2 degree configs
85    o updated/extended some store directives for seaice
86    o pkg/ecco now containes ecco-specific part of cost function
87    o top level routines the_main_loop, forward_step
88      supersede those in model/src/
89      previous input data.cost now in data.ecco
90      (new namelist ecco_cost_nml)
91    o in ctrl/ cleaned some cross-dependencies and updated CPP options
92    
93    checkpoint51t_post
94    o this is the pre-merge tag of the ecco-branch
95    
96    checkpoint51s_post
97    o cleanup: removed various obsolete #define-s
98    o pkg/grdchk
99      - renamed 'ph-grd 3' to 'grad-res'
100      - merged from ecco-branch
101        (remaining bug fixes for obcs gradient checks)
102      - additional high-precision output for testreport
103        (grep for 'precision_grdchk_result')
104    
105    checkpoint51r_post
106    o cleaned up or removed CPP_OPTIONS.h files
107    o updated results for some of the tests to reflect the new
108      optfiles (-ieee: -O0 instead of -O3)
109    
110    checkpoint51q_post
111    o cd_code:
112      - moved cd_scheme.F -> cd_code_scheme.F
113      - separate read_checkpoint from cd_code_ini_vars.F
114      - separated cd_code part from write_checkpoint
115      - updated AD_SOURCE, generated .flow
116      - added CD_CODE_VARS.h to the_main_loop
117      - Moving cd_code specific store dir.s to pkg/cd_code
118    o ctrl package totally restructured
119      - pack/unpack now optional and decoupled from
120        xx_/adxx_ I/O
121      - ctrl_pack/unpack cleaned
122        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
123      - confined inclusion of AD_CONFIG.h to where necessary.
124    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
125    
126    checkpoint51p_post
127    o create initial cd_code package
128      - WARNING: the initialization of fields within packages
129        is broken because INI_FIELDS (where READ_CHECKPOINT is
130        called) is called *before* PACKAGES_INIT_VARIABLES.
131        This seems to be backwards since
132        1) its important to initially zero the entire field including
133           the "halo" region
134        2) zeroing needs to be done *before* reading pickup info
135           and the pickup call might or might not happen in any
136           particular run
137      - this needs an overhaul for R2
138    o cleanup verification/*/code/GMREDI_OPTIONS.h
139    o cleanup testreport
140    
141    checkpoint51o_post
142    o bringing AD-related verif's up to date with genmake2
143      - carbon/
144      - global_ocean.90x40x15/
145      - hs.94.1x64x5/
146      - (front_relax/ )
147    o (more) consistent directory structure for AD-related verif.'s
148    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
149    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
150    o bug fix in find_alpha.F for MDJWF:
151      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
152        change rho -> rho-rhoConst
153      - replace call find_rho to find_rhonum
154    o initialisation of rFlx extended to full array (required by TAF)
155      and shifted to thermodynamics
156    o removed PTRACERS.h in ptracers routine
157    o added surfacetendencyPtr to S/R parameter list pracers_forcing
158    o Correcting initialisations for fVerU, fVerV.
159    o helping TAF to recognize dependency on kUp for
160      fVerU, fVerV
161    o Replacing delZ by delR in pkg/ctrl/
162    checkpoint51o_pre
163    
164    o undid all of cp51 pending some cleanups and discussion
165    o added the [#include "AD_CONFIG.h"] statement to all files that need
166       it for adjoint/tl #defines
167     o re-worked the build logic in genmake2 to support AD_CONFIG.h
168     o removed tools/genmake since it no longer works
169    
170    checkpoint51n_post
171    o modifications to make FREEZE flux visible to pkg/kpp
172      - moved surfaceTendencyTice from pkg/seaice to main code
173      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
174      - subroutine FREEZE now limits only surface temperature
175        (this means new output.txt for global_ocean.90x40x15,
176         global_ocean.cs32x15, and global_with_exf)
177    o added surface flux output variables to TIMEAVE_STATVARS
178    
179    checkpoint51n_pre
180    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
181    o added [#include "AD_CONFIG.h"] to all files that use the following
182      defines:
183      - ALLOW_ADJOINT_RUN
184      - ALLOW_TANGENTLINEAR_RUN
185      - ALLOW_ECCO_OPTIMIZATION
186    
187    checkpoint51m_post
188    o incorporating changes to get TAMC/TAF working in genmake2
189      - added new TAMC/TAF targets to the Makefile
190      - various cleanups related to package handling
191      - these changes should have no impact on the forward model
192    
193    checkpoint51l_post
194    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
195     - faster algorithm for cal_addtime.F
196     - higher precision arithmetic, where needed
197     - pkg/exf *startdate variables changed from calendar date to
198       model integration time
199    
200    checkpoint51l_pre
201    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
202    o enable to apply restoring on S & T only in a latitude band.
203    o update output (external_forcing_surf modif. change truncation errors)
204       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
205    
206    checkpoint51k_post
207    o change default to: useNHMTerms=.FALSE.
208     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
209       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
210     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
211        exp1, ideal_2D_oce
212     - change data file of oceanic exp (leave the results unchanged for now)
213       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
214    o set gravitySign automatically according to the vertical coordinate used
215      (and change sign: back to "logical" value: +1 when R increases downward)
216    o added an include barrier to the default CPP_OPTIONS.h and
217      removed the #include "PACKAGES_CONFIG.h" from it
218    o fix a bug in mom_fluxform (from chk51j_post)
219    
220    checkpoint51j_post
221    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
222    o adjusted some flow directives (dynamics, thermodynamics)
223    o added cubed-sphere case to test cost function
224    o heckpoint_lev?_directives.h now include
225      pkg-specific directives, whenever those are enabled.
226    o Moving pkg-specific flow directives to corresponding pkg
227      Moving pkg-specific differentiation list to corresponding pkg
228      Moving pkg-specific checkpoint-lev storing to corresponding pkg
229      ---> conventions are
230           - pkg_ad.flow
231           - pkg_ad_diff.list
232           - pkg_ad_check_lev?_dir.h
233    
234    checkpoint51i_post
235    o merge of the branch-genmake2
236      - knowingly breaks the older genmake
237      - automatic generation of all ALLOW_${PKG_NAME} defines
238      - new testreport supersedes older testscript
239    o large number of package inclusion and header cleanups
240    checkpoint51i_pre
241    
242    o new output for adjoin of global ocean vector invariant
243    o fix for checkpoint of thermodynamic seaice and bulk_force
244    o Steph gchem various cleanups
245    
246    checkpoint 51h_pre
247    o fixed some single quotes
248    o modify gchem pkg to be more versatile
249    o modifications to clean up dic pkg
250    o add pkg/cfc
251    
252    checkpoint51g_post
253    o provide links for ARPACK and ADM*TLM
254    o start removing verification/vero/
255    o update AD-related stuff
256      (in particular some IF-statements in model/src/ routines)
257    o adding to verification/global_ocean.90x40x15/ adjoint of
258      vector invariant setup
259    
260    checkpoint51f_post
261    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
262    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
263      of tracer Green's fucntions for ocean inversion project.
264    
265    checkpoint51f_pre
266    o Added on-the-fly spatial interpolation capability
267        "USE_EXF_INTERPOLATION" to pkg/exf.
268      - This is a temporary Cartesian-grid hack until
269        the super-duper ESMF coupler becomes available.
270      - See verification/global_with_exf/README for usage example.
271      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
272        flags and modified pkg/seaice accordingly.
273    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
274        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
275        non-local transport term.
276    
277    checkpoint51e_post
278    o pkg/mom_vecinv:
279      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
280      - add time-ave diagnostic of vorticity advection.
281    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
282    o atmospheric geopotential: - include water vapor effect;
283                                - use p^kappa in p* scaling.
284    o land pkg: read initial state from files.
285    o AIM : add stratospheric drag in the upper level
286    
287    checkpoint51d_post
288    o change function ILNBLNK (=> last non-blank char.) to return zero
289      (instead of the string length) when the string. char is empty
290    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
291    o modif's to restore TAMC compatibility
292      - avoid "_d" constructs in PARAMETER declarations
293      - avoid interrupting lines by comment lines
294    o Use cluster local disks for purely local I/O
295      vs. globally visible disks needed for ctrl stuff
296      (merged from ecco-branch)
297      - new active_file_loc... and mdsio_..._loc routines
298      - affected packages: autodiff, ctrl, grdchk, mdsio
299    
300    checkpoint51c_post
301    o introducing integer flag debugLevel
302      - debLevZero: suppress all output
303      - debLevA: standard
304      - debLevB: equivalent to current debugMode=.TRUE.
305    o introducing pathname variable mdsioLocalDir for mdsio
306      that can be specified at runtime
307      (relevant for cluster I/O to local disk)
308    `
309    >>>checkpoint51b_post
310    adjoint of ptracers
311    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
312    o extended state in checkpoint_lev?, etc.
313    o alternative ctrl/cost with tr1 or ptracer
314    o new comlev1_bibj_ptracers
315    o new ptracers.flow
316    o made ptracers_forcing same as external_forcing_s
317    o added verification for adjoint with ptracers
318      - adm. grdchk fail so far
319      - tlm. grdchk OK
320      - checked tapelev/comlev recomputations: OK
321    <<<checkpoint51b_pre
322    
323    checkpoint51a_post
324    o added code for biogeochemistry package
325      - new pkgs: dic, gchem
326      - new subroutine in ptracers
327    o modify code for biogeo packages
328      - in model/src and pkg/ptracers
329    
330    checkpoint51
331    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
332      - autodiff, ctrl, exf, grdchk, seaice
333      kept separate packages
334      - cost, ecco, obcs
335    o updating verification/internal_wave, verification/lab_sea
336      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
337    
338    checkpoint50i_post
339    o Preparing next differentiable checkpoint and sync
340      of MAIN vs. ecco-branch
341      - 1st step: this one is differentiable
342      - 2nd step: next(! not this) checkpoint will have updated packages
343                  from ecco-branch)
344    
345    checkpoint50h_post
346    o new package "land": provide surface BC for AIM.
347    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
348    o AIM: use true log-P extrapolation for near surface temp (= as in
349        F.Molteni paper) ; update aim.5l_cs output.
350    o New variable in PARM03 for more flexible pickups
351    o somewhat cleaned package initialisation sequence for
352      ctrl/ cost/ ecco/ in packages_... routines
353    
354    checkpoint50g_post
355    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
356      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
357      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
358        made the default because of faster convergence than ADI
359    
360    checkpoint50f_post
361    o exf totally restructured
362      - replaced all exf_set_ routines by one generic exf_set_gen.F
363        and made sure it's still differentiable
364      - split exf_getffields.F into new exf_bulkformulae.F
365      - exf_inscal_/exf_outscal_ suffixes consistent with field names
366      - updated adjoint/makefile and relevant verif. accordingly
367    
368    checkpoint50f_pre
369     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
370          + change Evap over land. (update aim.5l_cs output)
371     o added missing .cvsignores and made uniform across expts
372     o changed configuration of tidal_basin_2d expt
373     o added pkg/debug functions for tracing code in fatal crashes
374     o tidied pkg/monitor to use MONITOR_OPTIONS.h
375     o new fn in pkg/monitor to stop model if solution grows too big
376     o removed lots of single quotes from comments
377    
378    checkpoint50e_post
379    o make KPP work with PTRACERS
380     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
381       nearly a copy of kpp_transport_s
382     - there is no analogue to SurfaceTendencyS, so I have to use
383       gPtr(of the surface layer) instead
384    o add a new platform SunFire+mpi (SunFire 15000) to genmake
385    checkpoint50e_pre
386    
387    checkpoint50d_post
388    o change kpp output from multiple-record state files to single-record state
389      files analogous to write_state.F
390    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
391      analogous to the cg2d-related output.
392    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
393      so that writing to internal file fn (with length 512) fails.
394    checkpoint50d_pre
395    
396    checkpoint50c_post
397    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
398    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
399    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
400    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
401    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
402    
403    checkpoint50c_pre
404    Merging from release1_p13:
405    o bug fix for pkg/seaice dynamic solver
406    o Added SEAICE_initialHEFF to pkg/seaice
407    
408    checkpoint50b_post
409    o store u*,v* in gU,V instead of in guNm1,gvNm1
410    o in order to put the momForcing out of the Adams-Bashforth:
411      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
412      to timestep.F
413    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
414    o re-generate output for highly sensitive test-exp:
415       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
416    
417    checkpoint50b_pre
418    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
419    o corrected CPP option mismatch in exf_Bulk... functions for case
420      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
421    
422    checkpoint50a_post
423    o Bug fix for merging between c50 and KPP.
424      ikey was passed from thermodynamics to kpp_calc via
425      common block rather than being recomputed in kpp_calc,
426      in contradiction with new key itdkey.
427      New key ikppkey created, and tamc.h headers updated.
428    
429    checkpoint50
430    - 2nd step of merge with ecco-branch:
431      merge changes in ecco-branch back into main trunk
432    - bug fix in find_alpha
433    - more storing in gmredi_calc_tensor.F, kpp_routines.F
434    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
435    - merged some sliced AD support routines
436    
437    checkpoint49
438    merged from ecco-branch:
439    o exf:
440      - Enable initialisation of forcing fields to constant
441        (runtime) values.
442      - in exf_getffields.F
443        Reduce i-/j-loop to interior domain, discarding overlaps.
444        That also fixes wrong TAF-key computations for key_1, key_2
445        with bulf formulae.
446      - exf_init.F modify #ifdef for exf_init_evap
447      - exf_getffieldrec.F, ctrl_getrec.F
448        The following INT-usages are not safe:
449          fldsecs  = int(fldsecs/fldperiod)*fldperiod
450          fldcount = int(fldsecs/fldperiod) + 1
451        and were modified.
452    o autodiff: checkpoint_lev...
453      - updated storing for bulk formulae (some arrays were missing)
454      - added state for seaice package
455      - synchronized with main branch
456    o DIVA:
457      Modif.s in
458      - the_main_loop.F
459      - the_model_main.F
460      and added cost_final_restore.F cost_final_store.F
461      o With these changes, it is possible to fully separate
462        the first forward run to compute the cost function (mdthe_main_loop)
463        and adjoint runs over individual DIVA intervals (adthe_main_loop)
464        into separate model executions.
465        This enables better tuning of DIVA to given queue sizes.
466      o Loss of cost function value in consecutive DIVA runs is
467        fixed by storing to 'costfinal' file.
468      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
469        beginning/end of adjoint integration is accounted for.
470      The current changes apply to TAF-1.4.26.
471      TAF has one remaining bug, requiring one manual change
472      (see MITgcm manual).
473    o cal: synchronized between MAIN and ecco-branch
474    
475    checkpoint48i_post
476    o Changes to restore differentiability of code w.r.t. previous tag
477      (mostly adding new routines to make list and replacing
478      pressure by totPhiHyd).
479    o Updated and merged grdchk package
480      - has both ADM and TLM checks
481      - works for single- and multi-proc.
482      - output cleaned
483      - worked successfully for parallel DIVA
484    o genmake:
485      - Adding -platform=SP4
486      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
487    o Modif. for DIVA:
488      ctrl_unpack should not be called in intermediate DIVA interval.
489      (similar thing would apply for active files such as
490      tbar, sbar, psbar, which should not be reinitialised;
491      only relevant for ecco-branch)
492    
493    checkpoint48h_post
494    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
495    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
496    o Added SEAICE_initialHEFF to pkg/seaice
497    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
498    
499    checkpoint48g_post
500    --- EOS:
501    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
502      store total Potential in totPhyHyd for diagnostics & EOS.
503    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
504    --- Pressure/geopotential gradient:
505    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
506    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
507      ( changes results of global_ocean_pressure )
508    o NLFS + z-coord.: add eta*Rho' contribution.
509    o accurate phiHyd when using interface-W at the middle between 2 centers
510     ( changes results of ideal_2D_oce )
511    o includes r* 2nd term in potential gradient.
512    
513    checkpoint48f_post
514    Merging from release1_p12:
515    o Modifications for using pkg/exf with pkg/seaice
516      - improved description of the various forcing configurations
517      - added basic radiation bulk formulae to pkg/exf
518      - units/sign fix for evap computation in exf_getffields.F
519      - updated verification/global_with_exf/results/output.txt
520    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
521      (SBO) core products, including oceanic mass, center-of-mass,
522      angular, and bottom pressure (see pkg/sbo/README.sbo).
523    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
524      to avoid negative values in shallow regions.
525      - updated verification/natl_box/results/output.txt
526      - updated verification/lab_sea/results/output.txt
527    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
528    o Added useSingleCpuIO option (see PARAMS.h).
529    o Updated useSingleCpuIO option in mdsio_writefield.F to
530      work with multi-field files, e.g., for single-file pickup.
531    o pkg/seaice:
532      - bug fix in growth.F: QNET for no shortwave case
533      - added HeffFile for specifying initial sea-ice thickness
534      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
535    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
536      kpp_transport_t.F, forward_step.F, and the_main_loop.F
537    o pkg/seaice:
538      - adjoint-friendly modifications
539      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
540    
541    checkpoint48e_post
542    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
543    o dynamics: change definition of computational domain & adapt mom_fluxform
544      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
545    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
546        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
547        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
548        global_ocean.90x40x15 global_with_exf global_ocean_pressure
549        inverted_barometer solid-body.cs-32x32x1
550      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
551    
552    checkpoint48d_post
553    o in preparation for r*:
554     a) use pre-computed gradient of hydrostatic potential:
555        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
556     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
557        => affects results of glob_oce_pressure (different truncation error)  
558      update output.txt of ideal_2D_oce & global_ocean_pressure
559    
560    checkpoint48d_pre
561    o in preparation for r*:
562      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
563      pass the 2 comp. of the grad. as arguments to momentum S/R.
564      but for the moment, only used if it does not change the results.
565    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
566    
567    checkpoint48c_post
568    Modifications in treatment of initial flux forcing controls
569    to avoid extra storing of flux fields.
570    
571    checkpoint48c_pre
572    o Added tidal_basin_2d experiment (currently 1D!)
573    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
574    
575    checkpoint48b_post
576    o r* coordinate added in #ifdef NONLIN_FRSURF block.
577     (modification to pressure gradient not yet implemented)
578    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
579      (for U & V) that are used for vertical advection of momentum.
580    
581    checkpoint48a_post
582    o In preparation for r*, use temp. array to compute vertical transport
583       in flux-form momentum pkg. => change results of few test-exp.
584      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
585                        lab_sea, natl_box & plume_on_slope
586    
587    checkpoint48
588    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
589    
590    checkpoint47j_post
591    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
592    o moved adexch from forward_step to addummy_in_stepping
593    o added exch in ctrl_map_...
594    o aveFreq.=0. at end of cost_final to avoid overwrite in
595      reverse checkpointing loop
596    o Yet more changes in gmredi:
597      * adgmredi_calc_tensor
598        avoiding all recomputation of gmredi_slope_limit
599      * adgmredi_x/y/rtransport
600        added flag for excessive storing to avoid recomp. of
601        u/v/rtans, dTdx/y/z
602        -> this is not really necessary and very memory-consuming
603      * adgmredi_slope_psi:
604        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
605      * gmredi_slope_limit
606        re-activated full calculation of taperfct for case 'ac02'
607    o updating verification/ adjoints of carbon, global_ocean.90x40x15
608    
609    checkpoint47i_post
610    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
611    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
612      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
613    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
614    o gmredi: fix few bugs.
615    
616    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
617    This will be a good checkpoint to plug into the ecco-branch.
618    o few modif.'s to get latest version adjointed
619      (mainly kick out code in ini_linear_phisurf)
620    o modif's to run adjoint with exactConserv
621    o case GM_BOLUS_ADVEC should be cleaned
622      S/R gmredi_slope_psi should be cleaned
623    o verification/carbon now has exactConserv=.TRUE.
624    
625    checkpoint47g_post
626    o time-average AIM output: becomes independent from statvars time-average
627      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
628    o After TAF bug fix:
629      Tested adjoint of gmredi package.
630      Tests were done with checkpoint47 rather than with latest
631      checkpoint47f_post since the latter is broken for the adjoint
632      verification/carbon/ contains both ADM and TLM gradient checks.
633    Here they are, before they get changed/lost/stolen.
634    Mostly modif.'s to fix numerical sensitivities.
635    Gradient checks OK for
636    - GM_taper_scheme:
637      * clipping
638      * ac02
639      * linear
640      * glw91
641      * dm95
642      * ldd97
643    - GMREDI_OPTIONS:
644      * GM_VISBECK_VARIABLE_K
645      * GM_NON_UNITY_DIAGONAL
646      * GM_EXTRA_DIAGONAL
647      * GM_BOLUS_ADVEC
648    in conjunction with data.gmredi parameters to be checked in
649    in a few minutes under verification/carbon/code/
650    
651    checkpoint47f_post
652    Merging from release1_p10:
653    o modifications for using pkg/exf with pkg/seaice
654      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
655        and SEAICE_EXTERNAL_FLUXES
656      - pkg/exf CPP options EXF_READ_EVAP and
657        EXF_NO_BULK_COMPUTATIONS
658      - usage examples are Experiments 8 and 9 in
659        verification/lab_sea/README
660      - verification/lab_sea default experiment now uses
661        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
662    
663    checkpoint47e_post
664    o created a tag prior to creating a branch
665    
666    checkpoint47d_post
667    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
668      at the bottom boundary had an erroneous half slip boundary condition
669    o added bottom drag and no slip boundary condition capabilities to
670      oceanic pressure coordinates code
671    o added new verification experiment global_ocean_pressure, this experiment is
672      also described in the tutorial section of the manual
673    checkpoint47d_pre
674    
675    checkpoint47c_post
676    o Added a verification experiment for a global cubed-sphere ocean run
677      -  verification/global_ocean.cubed32x32x30
678      -  uses pkg/therm_seaice and pkg/bulk_forcing
679    
680    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
681    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
682      when using P-coordinate; only implemented for atmospheric config.
683    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
684      NOTES: requires option NONLIN_FRSURF to be "#define".
685    o update advect_xz/results/output.txt (left from checkpoint44g_post)
686    
687    checkpoint47b_post
688    Merging from release1_p9:
689    o pkg/seaice
690      - removed GOTO's and added taf directives
691      - double precision constants to reduce the g77 (Linux)
692        to F77 (SGI) differences reported in release1_p8
693    o tools/genmake
694      - added SGI options
695    o verification/testscript
696      - updated to that of checkpoint47a_post
697    o verification/global_ocean.90x40x15/input/eedata
698      - modified for SGI f77 compatibility
699    o verification/lab_sea
700      - added description of sea-ice model
701      - added missing matlab routines
702      - added test of thermodynamics parallelization
703    
704    checkpoint47a_post
705    o new pkg: aim_v23
706     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
707       for now, keep the same surface forcing as before.
708     - Part-Cell implemented into AIM; check that Heat & Water are conserved
709     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
710     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
711    o add diagnostic of surface correction term in monitor output
712    
713    o bulk_force and therm_seaice
714    - Two packages:  bulk_force (Bulk forcing)
715      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
716    - Earlier integration from Stephaine Dutkiewicz
717      and Patrick Heimbach.
718    - Two ifdef statements for compile time,
719       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
720    
721    checkpoint47
722    differentiable version of checkpoint46n_post
723    o bug fix in quasihydrostaticterms
724    o * "clean" adjoint code (in terms of extensive recomputations)
725        can now be obtained for all GMREDI options (i.e. for
726        - GM_VISBECK_VARIABLE_K
727        - GM_NON_UNITY_DIAGONAL
728        - GM_EXTRA_DIAGONAL
729        - GM_BOLUS_ADVEC )
730      * However, wrong gradient check problem remains unsolved.
731      * New CPP options have been introduced for different
732        tapering schemes
733    o external_fields_load now part of differentiation list
734    o pressure needs multiple storing;
735      would be nice to have store_pressure at beginning or
736      end of forward_step, e.g. by having phiHyd global (5-dim.)
737      (NB: pressure is needed for certain cases in find_rho,
738      which is also invoked through convective_adjustment).
739    o recomputations in find_rho for cases
740     'JMD95'/'UNESCO' or 'MDJWF' are OK.
741    o #define ATMOSPHERIC_LOADING should be differentiable
742    o ini_forcing shifted to begining of initialise_varia
743    o Incorporating QNVS line search routines into MITgcm
744      (this is separate code, and therefore not under pkg)
745      lsopt/, optim/
746    o Updated verification/carbon/
747      - #define GM_VISBECK_VARIABLE_K
748      - GM_taper_scheme    = 'ldd97'    
749    
750    checkpoint46n_post
751    Merging from release1_p8:
752    o verification/natl_box:
753      updating new external_fields_load routine
754    o New package: pkg/seaice
755      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
756      The sea-ice code is based on Hibler (1979-1980).
757      Two sea-ice dynamic solvers, ADI and LSR, are included.
758      In addition to computing prognostic sea-ice variables and diagnosing
759      the forcing/external data fields that drive the ocean model,
760      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
761      The implied surface heat flux is then stored in variable
762      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
763      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
764      non-local transport term.  Because this call precedes model
765      thermodynamics, temperature under sea-ice may not be "exactly" at
766      the freezing point by the time theta is dumped or time-averaged.
767      N.B.: fairly large differences in accuracy occur across
768            different platforms/compilers; comparison between
769            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
770            generated output gives:
771       T           S           U           V
772      C D M    c        m  s        m  s        m  s        m  s
773      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
774      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
775      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
776    
777      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
778    o GAD:
779      - generated new common blocks to account for call of
780        same gad routines with differing traceridentities
781        (needed to modify tracerIdentity indices in GAD.h)
782      - generated separate common blocks for case useCubedSphereExchange
783        (Department of Futurology)
784      - parameter lists to gmredi_?transport: added tracerIdentity
785      - added new key indices to tamc.h
786    o external_fields_load:
787      - added this routine to TAF list
788      - needed to make some common blocks global and additional storing
789        along the same lines as exf package (checkpoint_lev?_directives.h)
790    o exf:
791      updated external forcing package
792      - bug fixes carried over from ecco-branch
793        (missing OBCS_OPTIONS.h in two routines)
794      - enable easy to use "no forcing".
795      - added exf I/O for atmospheric loading
796      - added exf I/O for runoff data
797      - transfered scaling between exf <-> MITgcm to exf namelist
798    o Adding new verification experiment global_with_exf.
799      This verification experiment is almost identical to the
800      global_ocean.90x40x15 experiment, except that it uses
801      the exf (and cal) package instead of the
802      external_fields_load routine (cf README file).
803    
804    checkpoint46m_post
805    o modified testscript to return -- when there are no lines of "%MON" output
806    o added new flag "quasiHydrostatic" for QH mode
807      and new routine quasihydrostaticterms()
808    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
809      New routine: mom_u_coriolis_nh()
810    o fixed sign of non-hydrostatic metric terms in u and v equations.
811      Depend on correct sign of gravitySign.
812    o added work.pc* to .cvsignore in aim directories using ifc
813    o introduced flag for controllin non-hydrostatic metric terms
814    o removed gravitySign from PARM04
815    o switched to g77/ifc from pgf77 in aim experiments
816    
817    checkpoint46l_post
818    o made convective adjustment work with pressure coordinates:
819     - changed the direction of k-loop in convective_adjustment.F for the
820       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
821     - adjusted the reference pressure k-index in convective_adjustment.F
822     - adjusted the convection condition in convect.F (in analogy to
823       calc_ivdc.F)
824     - convective_adjustment no longer computes anything on the halos
825     - removed the warnings about negative salinity from find_rho.F and
826       find_alpha.F; instead the new routine look_for_neg_salinity, called
827       at the beginning of find_rho, find_alpha, and find_beta, does a
828       check of the entire slice, if CPP-option
829       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
830    checkpoint46l_pre
831    
832    checkpoint46k_post
833    o fixed the verification/global_ocean.90x40x15 experiment:
834     - new bathymetry (the world according to A., JMC, and M.)
835     - new initial fields and forcing fields (*.bin files)
836     - new POLY3.COEFFS (for the next release one should switch to a full
837       equation of state: JMD95P or MDJWF)
838     - fixed several errors and redundancies in the data file
839     - experiment uses looped cells
840     - added matlab directory with diagnostic scripts for plotting of output
841    
842    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
843     - read AIM physics parameters from a file (data.aimphys)
844     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
845    
846    checkpoint46j_post
847    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
848    o move wVel computation at the end of the time step, in S/R integr_continuity
849    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
850    o update timeave pkg for wVel diagnostic.
851    checkpoint46j_pre
852    
853    checkpoint46i_post
854    o Clean up AIM package (and keep the results unchanged):
855      include CPP_OPTION and use IMPLICT NONE in all routines ;
856      declare all the variables _RL ; use _d 0 for all numerical constants.
857      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
858    
859    checkpoint46h_post
860    o cleaned up the use of rhoNil and rhoConst.
861      - rhoNil should only appear in the LINEAR equation of state, everywhere
862        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
863        and the dynamical equations are all divided by rhoConst
864    o introduced new parameter rhoConstFresh, a reference density of fresh
865      water, to remove the fresh water flux's dependence on rhoNil. The default
866      value is 999.8 kg/m^3
867    o cleanup up external_forcing.F and external_forcing_surf.F
868      - can now be used by both OCEANIC and OCEANICP
869    checkpoint46h_pre
870    
871     Added code to convert surface volume flux (fresh water) into
872     a mass flux when using P coordinates in the ocean (OCEANICP).
873     Note: It assumes you have set rho0=rhoConst=density of fresh water.
874    
875    checkpoint46g_post
876    o Include a new diagnostic variable phiHydLow for the ocean model
877      - in z-coordinates, it is the bottom pressure anomaly
878      - in p-coordinates, it is the sea surface elevation
879      - in both cases, these variable have global drift, reflecting the mass
880        drift in z-coordinates and the volume drift in p-coordinates
881      - included time averaging for phiHydLow, be aware of the drift!
882    o depth-dependent computation of Bo_surf for pressure coordinates
883      in the ocean (buoyancyRelation='OCEANICP')
884      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
885        Theta, Salinity, and Pressure in the parameter list. This routine is
886        presently contained in find_rho.F. This routine does not give the
887        correct density for 'POLY3', which would be a z-dependent reference
888        density.
889    o cleaned up find_rho
890      - removed obsolete 'eqn' from the parameter list.
891    o added two new verification experiments: gop and goz
892      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
893    checkpoint46g_pre
894    
895    checkpoint46f_post
896    o Enable tangent linear (forward mode) gradient checks:
897      - extended active file handling to g_... files
898      - added TANGENT_SIMULATION to theSimulationMode
899      - extended grdchk package accordingly
900    o added tangent linear setup in verification/carbon/code_ftl
901    o added adjoint setup in verification/front_relax/code_ad
902    
903    checkpoint46e_post
904    o Added new equation of state -> MDJWF
905      - EOS of McDougall et al., 2002, JAOT, submitted
906      - caveat: the equation of state is only valid for a smaller (more
907        realistic?) range of values than JMD95P/Z and UNESCO
908      - added masks to the calculation of pressure in store_pressure
909      - added more check values for density in check_eos (ini_eos.F), some of
910        the old check values are out of the range of the MDJWF-eos, so don't
911        expect perfect matches for those
912    checkpoint46e_pre
913    
914    checkpoint46d_post
915    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
916      'OCEANICP', also initialised field pressure correctly in ini_eos in the
917      case of pressure coordinates. eosType='JMD95Z' in
918      combination with buoyancyRelation='OCEANICP' now causes an error.
919    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
920      in find_alpha/beta.
921    checkpoint46d_pre
922    
923    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
924      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
925    
926    checkpoint46c_post
927    o Changes necessary for ocean in p-coordinates
928     -  Added new buoyancy relation = 'OCEANICP'
929     -  Added new parameters = gravitySign (this used to be contained inside
930        the factor dRdZ which I added when we first switched to R coordinates).
931     X GM/Redi is not compatible (yet)
932     X bottom drag and no-slip need to be debugged.
933    checkpoint46c_pre
934    
935    checkpoint46b_post
936    o Added new equation of state -> JMD95Z and JMD95P
937      - EOS of Jackett and McDougall, 1995, JAOT
938      - moved all EOS parameters into EOS.h
939      - new routines ini_eos.F, store_pressure.F
940    o Added UNESCO EOS, but not recommended because it requires
941      in-situ temperature (see JMD95)
942    o Modified formatting for knudsen2.f in utils/knudsen2 and added
943      unesco.f to be used with POLY3
944    checkpoint46b_pre
945    
946    checkpoint46a_post
947    o Added (atmospheric) pressure loading
948      - new field in FFIELDS.h, etc...
949      - new cpp flag ATMOSPHERIC_LOADING
950    o Changed hFacC to _hFacC in calc_phi_hyd.F
951    o Added SHORTWAVE_HEATING to some files for consistency
952    checkpoint46a_pre
953    
954    checkpoint46
955    further merges from release1_p5
956    o new ctrl package
957      - adopted from ECCO environment to enable optimization
958      - added Eliassen Palm fluxes to controls
959    o added Eliassen Palm flux controls to gradient check package
960    o cost package
961      - Compatible with new ctrl package
962      - added Eliassen Palm cost hooks
963      - modif's of existing cost functions
964    o Adjoint-related bug fixes in kpp:
965      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
966      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
967    o autodiff package
968      - flow directives:
969        + new for S/R do_the_model_io
970        + enhanced for S/R checkpoint
971        + new gmredi.flow
972      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
973        disable adcommon.h/g_common.h by default.
974      - fixed problem for adjoint of global_max
975    o modified verification/carbon/
976    o New setup for adjoint of global_ocean
977    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
978    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
979    o incorporated hooks for sponge layer code (external_forcing.F)
980    
981    checkpoint45d_post
982    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
983    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
984      (affects plume_on_slope "cg2d" output)
985    o add new parameter deltaTfreesurf for free-surface time stepping
986    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
987    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
988    o change phiMin in exp1 (to agree with documentation)
989    o add new flags:
990     - T,S forcing inside/outside Adams-Bashforth
991     - turn off temp,salt advection and/or forcing
992     - for each tracer, define internal flag for multiDimAdvection & A-B
993    o monitor: change definition of KE to check conservation of Energy
994    
995    checkpoint45c_post
996    o Removed f90 comments ("!")
997    o Modified initialisations to enable exf package for MITgcm
998      (without invoking ECCO_PACKAGE).
999    o modifications to gradient check package (Martin Losch)
1000      - enable centered differences
1001      - modified format of standard output
1002    
1003    checkpoint45b_post
1004    o cleaned exchange calls in cg2d
1005    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1006    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1007      to configure barotropic setup (Martin Losch)
1008    o moved some initialisations within bi,bj loop in dynamics
1009      (TAF flow dependency)
1010    o in initialise_varia, moved call packages_init_variables
1011      before convective_adjustment_init
1012      (corresponding adjustment of TAF tape initialisation).
1013    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1014    
1015    checkpoint45a_post
1016    o compute Rho over the whole domain (extend iMin,jMin indices)
1017    o specific exchange for X-slice domain (case Ny=1)
1018    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1019    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1020    
1021    checkpoint44h_post = checkpoint45
1022    o Fix to restore differentiability:
1023      place at which packages_init_variables is called in
1024      initialise_varia is crucial for reverse control flow.
1025    o modifications in GMRedi to enable stable adjoint
1026      (corresponding modif's in thermodynamics, dynamics)
1027    o added missing hook for sponge layer code in external_forcing
1028    o modified test cost functions
1029    o storing in gad_advection (plus removal of write(0,*)!
1030    o missing headers TR1.h added in convective_adjustment routines
1031    o errorMessageUnit set non-equal zero in eeboot
1032      (conflict on some platforms, e.g. IBM SP3)
1033    o modified carbon verif.
1034    
1035    checkpoint44h_pre
1036    o vertical grid option: allow to put the Interface at the middle between
1037      2 cell-centers ; replace delZ in pkg/kpp by drF.
1038    o GM Advective form: Tracers are advected using the residual transport (=
1039      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1040    
1041    checkpoint44g_post
1042    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1043      results) ; ifdef missing in thermodynamics.F
1044    
1045    checkpoint44f_pre,checkpoint44f_post
1046    o added PTRACERS package
1047      This allows an arbitrary number of passive tracers to be integrated
1048      forward simultaneously with the dynamicaly model.
1049      + Implemented so far:
1050        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1051        - I/O and checkpointing
1052        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1053      + Not implemented so far:
1054        - KPP
1055        - OBCS
1056      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1057        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1058        line in data.pkg.
1059      + This package is disabled by default since it increases storage.
1060    
1061    
1062    o testscript: added -cleanup option
1063    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1064                 b) enable to filter 2D fields.
1065    
1066    checkpoint44e_pre,post
1067    o re-wrote convective adjustment to use pre-calculated weights
1068      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1069      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1070      Original calls to convect() still in place.
1071    
1072    chkpt44d_pre,post
1073    o added missing EXCLUDE_MONITOR flags
1074    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1075      (incompatible typ in MIN/MAX expressions caused problems
1076      on IBM SP3)
1077    o in genmake added variable MAKEDEPEND
1078      plus resetting for case SunOS
1079    o added timer_stats.c routine for IBM SP3
1080    o removed variables in dynamics
1081    !!! I forgot to create tag chkpt44d_pre !!!
1082    !!! But chkpt44d_pre = chkpt44c_post    !!!
1083    
1084    o real fresh water flux implemented with non-linear free-surface.
1085    
1086    chkpt44c_pre,post
1087    o few fix (mask in shap_s2, EmPmR in external_field_load,
1088      USE_NATURAL_BCS in solve_for_P);
1089    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1090    
1091    checkpoint44b_pre/_post
1092    o merge of relevant stuff from the ecco-branch:
1093      - genmake: removed $S64 overwrite for case SunOS
1094      - pkg/exf: update and corrections for field swapping and obcs
1095      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1096                  harmonized between ECCO and MITgcm
1097      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1098                      updated checkpointing_lev... lists for obcs
1099      - model/src: minor changes in forward_step, plot_field
1100                   added directive for divided adjoint in the_main_loop
1101      - pkg/mdsio: added mdsio_gl_slice
1102    
1103    o check parameters & config (chkpt44a_pre,post)
1104    o OBC and NonLin_FrSurf.
1105    
1106    checkpoint44
1107    o fix bug in mom_vi_del2uv
1108    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1109    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1110    o update AIM experiments (NCEP input files)
1111    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1112    o added some stuff for AD
1113    
1114    checkpoint43
1115    o added two new advection tests
1116    o added global 4x4 degree ocean test
1117    o added test of H&S94 with free surface on cube
1118    o some final mods for gradient check, adjoint,...
1119    
1120    checkpoint42
1121      Fixed AD-related problems:
1122    o Store directives up-to-date with re-arranged Adams-Bashforth
1123      (mainly thermodynamics.F)
1124    o New store directives for multi-dim. advection schemes
1125      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1126      * new common block and key passkey
1127      (mainly gad_advection.F)
1128    o Modified store directives for split of dynamics/thermodynamics
1129      for the case ALLOW_KPP
1130    o Cleaned argument list for timestep_tracer.F
1131    
1132    checkpoint41
1133    o re-formatted/added comments in prologues of key subroutines
1134      to work with protex
1135    
1136  checkpoint40  checkpoint40
1137  o all changes of checkpoint40pre?  o moved calc_gs, calc_gt and calc_tr1 back to model/src
1138    o added FLT (floats) package from Arne along with demo. experiment
1139    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1140      implementation of forward-in-time forcing terms
1141    o more mods for non-linear free-surface including new variable
1142    o modified multi-dim method to work on cube
1143    o bug fix in KPP (from DM)
1144    
1145    checkpoint40pre9
1146    o added DST advection schemes
1147    o fix MPI bug on SGI's
1148    o modifications for non-linear free-surface
1149    o fixed conditionals for fixed flow/passive tracer only mode
1150    o added tension/strain form of stress tensor
1151    o changes to commenting of arguments for TAF/TAMC
1152    o added/updated many matlab scripts
1153    o added multi-dimensional advection method for tracers
1154      
1155    checkpoint40pre8
1156  o new package rw/  o new package rw/
1157    Added method for dumping intermediate local arrays:    Added method for dumping intermediate local arrays:
1158    mdsio_writetile - same as mdsio_writefield except works from inside    mdsio_writetile - same as mdsio_writefield except works from inside

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