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revision 1.2 by cnh, Sat May 30 02:19:49 1998 UTC revision 1.211 by jmc, Sun Nov 23 00:44:11 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52b_pre
7    
8    o call "do_the_model_io" at the beginning (=> dump initial state)
9    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
10    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
11      (need info on NUMBER_OF_PTRACERS)
12    o missing PTRACERS headers in some routines
13    o default tamc.h in pkg/autodiff supposed to crash
14      to ensure proper customization
15    
16    checkpoint52a_post
17    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
18      - moved surfaceTendencyTice from pkg/seaice to main code
19      - subroutine FREEZE_SURFACE now limits only surface temperature
20        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
21        => new output.txt for global_ocean.cs32x15 & global_with_exf
22      - keep the old version of FREEZE for backward compatibility;
23        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
24      - corresponding modifs for TAF directives
25    o added surface flux output variables to TIMEAVE_STATVARS
26    o time-averaged output for pkg/ptracers
27    o fix problem with ECCO-related divided adjoint
28      snapshot file was missing some ad-variables,
29      but no warning issued by TAF
30    
31    checkpoint52a_pre
32    o some bug fixes for #undef REAL4_IS_SLOW
33    
34    checkpoint52 = ecco_c52_e35
35    o after testing adjoints of checkpoint51u_post
36    
37    checkpoint51u_post
38    o this is the post-merge tag of the ecco-branch
39      (needs another clean checkout and re-testing)
40    o various natl_box_adjoint configs and results
41      but no input fields
42    o obcs adjoint not yet merged!
43    o adding ECCO global 1x1 and 2x2 degree configs
44    o updated/extended some store directives for seaice
45    o pkg/ecco now containes ecco-specific part of cost function
46    o top level routines the_main_loop, forward_step
47      supersede those in model/src/
48      previous input data.cost now in data.ecco
49      (new namelist ecco_cost_nml)
50    o in ctrl/ cleaned some cross-dependencies and updated CPP options
51    
52    checkpoint51t_post
53    o this is the pre-merge tag of the ecco-branch
54    
55    checkpoint51s_post
56    o cleanup: removed various obsolete #define-s
57    o pkg/grdchk
58      - renamed 'ph-grd 3' to 'grad-res'
59      - merged from ecco-branch
60        (remaining bug fixes for obcs gradient checks)
61      - additional high-precision output for testreport
62        (grep for 'precision_grdchk_result')
63    
64    checkpoint51r_post
65    o cleaned up or removed CPP_OPTIONS.h files
66    o updated results for some of the tests to reflect the new
67      optfiles (-ieee: -O0 instead of -O3)
68    
69    checkpoint51q_post
70    o cd_code:
71      - moved cd_scheme.F -> cd_code_scheme.F
72      - separate read_checkpoint from cd_code_ini_vars.F
73      - separated cd_code part from write_checkpoint
74      - updated AD_SOURCE, generated .flow
75      - added CD_CODE_VARS.h to the_main_loop
76      - Moving cd_code specific store dir.s to pkg/cd_code
77    o ctrl package totally restructured
78      - pack/unpack now optional and decoupled from
79        xx_/adxx_ I/O
80      - ctrl_pack/unpack cleaned
81        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
82      - confined inclusion of AD_CONFIG.h to where necessary.
83    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
84    
85    checkpoint51p_post
86    o create initial cd_code package
87      - WARNING: the initialization of fields within packages
88        is broken because INI_FIELDS (where READ_CHECKPOINT is
89        called) is called *before* PACKAGES_INIT_VARIABLES.
90        This seems to be backwards since
91        1) its important to initially zero the entire field including
92           the "halo" region
93        2) zeroing needs to be done *before* reading pickup info
94           and the pickup call might or might not happen in any
95           particular run
96      - this needs an overhaul for R2
97    o cleanup verification/*/code/GMREDI_OPTIONS.h
98    o cleanup testreport
99    
100    checkpoint51o_post
101    o bringing AD-related verif's up to date with genmake2
102      - carbon/
103      - global_ocean.90x40x15/
104      - hs.94.1x64x5/
105      - (front_relax/ )
106    o (more) consistent directory structure for AD-related verif.'s
107    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
108    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
109    o bug fix in find_alpha.F for MDJWF:
110      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
111        change rho -> rho-rhoConst
112      - replace call find_rho to find_rhonum
113    o initialisation of rFlx extended to full array (required by TAF)
114      and shifted to thermodynamics
115    o removed PTRACERS.h in ptracers routine
116    o added surfacetendencyPtr to S/R parameter list pracers_forcing
117    o Correcting initialisations for fVerU, fVerV.
118    o helping TAF to recognize dependency on kUp for
119      fVerU, fVerV
120    o Replacing delZ by delR in pkg/ctrl/
121    checkpoint51o_pre
122    
123    o undid all of cp51 pending some cleanups and discussion
124    o added the [#include "AD_CONFIG.h"] statement to all files that need
125       it for adjoint/tl #defines
126     o re-worked the build logic in genmake2 to support AD_CONFIG.h
127     o removed tools/genmake since it no longer works
128    
129    checkpoint51n_post
130    o modifications to make FREEZE flux visible to pkg/kpp
131      - moved surfaceTendencyTice from pkg/seaice to main code
132      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
133      - subroutine FREEZE now limits only surface temperature
134        (this means new output.txt for global_ocean.90x40x15,
135         global_ocean.cs32x15, and global_with_exf)
136    o added surface flux output variables to TIMEAVE_STATVARS
137    
138    checkpoint51n_pre
139    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
140    o added [#include "AD_CONFIG.h"] to all files that use the following
141      defines:
142      - ALLOW_ADJOINT_RUN
143      - ALLOW_TANGENTLINEAR_RUN
144      - ALLOW_ECCO_OPTIMIZATION
145    
146    checkpoint51m_post
147    o incorporating changes to get TAMC/TAF working in genmake2
148      - added new TAMC/TAF targets to the Makefile
149      - various cleanups related to package handling
150      - these changes should have no impact on the forward model
151    
152    checkpoint51l_post
153    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
154     - faster algorithm for cal_addtime.F
155     - higher precision arithmetic, where needed
156     - pkg/exf *startdate variables changed from calendar date to
157       model integration time
158    
159    checkpoint51l_pre
160    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
161    o enable to apply restoring on S & T only in a latitude band.
162    o update output (external_forcing_surf modif. change truncation errors)
163       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
164    
165    checkpoint51k_post
166    o change default to: useNHMTerms=.FALSE.
167     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
168       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
169     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
170        exp1, ideal_2D_oce
171     - change data file of oceanic exp (leave the results unchanged for now)
172       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
173    o set gravitySign automatically according to the vertical coordinate used
174      (and change sign: back to "logical" value: +1 when R increases downward)
175    o added an include barrier to the default CPP_OPTIONS.h and
176      removed the #include "PACKAGES_CONFIG.h" from it
177    o fix a bug in mom_fluxform (from chk51j_post)
178    
179    checkpoint51j_post
180    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
181    o adjusted some flow directives (dynamics, thermodynamics)
182    o added cubed-sphere case to test cost function
183    o heckpoint_lev?_directives.h now include
184      pkg-specific directives, whenever those are enabled.
185    o Moving pkg-specific flow directives to corresponding pkg
186      Moving pkg-specific differentiation list to corresponding pkg
187      Moving pkg-specific checkpoint-lev storing to corresponding pkg
188      ---> conventions are
189           - pkg_ad.flow
190           - pkg_ad_diff.list
191           - pkg_ad_check_lev?_dir.h
192    
193    checkpoint51i_post
194    o merge of the branch-genmake2
195      - knowingly breaks the older genmake
196      - automatic generation of all ALLOW_${PKG_NAME} defines
197      - new testreport supersedes older testscript
198    o large number of package inclusion and header cleanups
199    checkpoint51i_pre
200    
201    o new output for adjoin of global ocean vector invariant
202    o fix for checkpoint of thermodynamic seaice and bulk_force
203    o Steph gchem various cleanups
204    
205    checkpoint 51h_pre
206    o fixed some single quotes
207    o modify gchem pkg to be more versatile
208    o modifications to clean up dic pkg
209    o add pkg/cfc
210    
211    checkpoint51g_post
212    o provide links for ARPACK and ADM*TLM
213    o start removing verification/vero/
214    o update AD-related stuff
215      (in particular some IF-statements in model/src/ routines)
216    o adding to verification/global_ocean.90x40x15/ adjoint of
217      vector invariant setup
218    
219    checkpoint51f_post
220    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
221    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
222      of tracer Green's fucntions for ocean inversion project.
223    
224    checkpoint51f_pre
225    o Added on-the-fly spatial interpolation capability
226        "USE_EXF_INTERPOLATION" to pkg/exf.
227      - This is a temporary Cartesian-grid hack until
228        the super-duper ESMF coupler becomes available.
229      - See verification/global_with_exf/README for usage example.
230      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
231        flags and modified pkg/seaice accordingly.
232    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
233        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
234        non-local transport term.
235    
236    checkpoint51e_post
237    o pkg/mom_vecinv:
238      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
239      - add time-ave diagnostic of vorticity advection.
240    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
241    o atmospheric geopotential: - include water vapor effect;
242                                - use p^kappa in p* scaling.
243    o land pkg: read initial state from files.
244    o AIM : add stratospheric drag in the upper level
245    
246    checkpoint51d_post
247    o change function ILNBLNK (=> last non-blank char.) to return zero
248      (instead of the string length) when the string. char is empty
249    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
250    o modif's to restore TAMC compatibility
251      - avoid "_d" constructs in PARAMETER declarations
252      - avoid interrupting lines by comment lines
253    o Use cluster local disks for purely local I/O
254      vs. globally visible disks needed for ctrl stuff
255      (merged from ecco-branch)
256      - new active_file_loc... and mdsio_..._loc routines
257      - affected packages: autodiff, ctrl, grdchk, mdsio
258    
259    checkpoint51c_post
260    o introducing integer flag debugLevel
261      - debLevZero: suppress all output
262      - debLevA: standard
263      - debLevB: equivalent to current debugMode=.TRUE.
264    o introducing pathname variable mdsioLocalDir for mdsio
265      that can be specified at runtime
266      (relevant for cluster I/O to local disk)
267    `
268    >>>checkpoint51b_post
269    adjoint of ptracers
270    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
271    o extended state in checkpoint_lev?, etc.
272    o alternative ctrl/cost with tr1 or ptracer
273    o new comlev1_bibj_ptracers
274    o new ptracers.flow
275    o made ptracers_forcing same as external_forcing_s
276    o added verification for adjoint with ptracers
277      - adm. grdchk fail so far
278      - tlm. grdchk OK
279      - checked tapelev/comlev recomputations: OK
280    <<<checkpoint51b_pre
281    
282    checkpoint51a_post
283    o added code for biogeochemistry package
284      - new pkgs: dic, gchem
285      - new subroutine in ptracers
286    o modify code for biogeo packages
287      - in model/src and pkg/ptracers
288    
289    checkpoint51
290    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
291      - autodiff, ctrl, exf, grdchk, seaice
292      kept separate packages
293      - cost, ecco, obcs
294    o updating verification/internal_wave, verification/lab_sea
295      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
296    
297    checkpoint50i_post
298    o Preparing next differentiable checkpoint and sync
299      of MAIN vs. ecco-branch
300      - 1st step: this one is differentiable
301      - 2nd step: next(! not this) checkpoint will have updated packages
302                  from ecco-branch)
303    
304    checkpoint50h_post
305    o new package "land": provide surface BC for AIM.
306    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
307    o AIM: use true log-P extrapolation for near surface temp (= as in
308        F.Molteni paper) ; update aim.5l_cs output.
309    o New variable in PARM03 for more flexible pickups
310    o somewhat cleaned package initialisation sequence for
311      ctrl/ cost/ ecco/ in packages_... routines
312    
313    checkpoint50g_post
314    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
315      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
316      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
317        made the default because of faster convergence than ADI
318    
319    checkpoint50f_post
320    o exf totally restructured
321      - replaced all exf_set_ routines by one generic exf_set_gen.F
322        and made sure it's still differentiable
323      - split exf_getffields.F into new exf_bulkformulae.F
324      - exf_inscal_/exf_outscal_ suffixes consistent with field names
325      - updated adjoint/makefile and relevant verif. accordingly
326    
327    checkpoint50f_pre
328     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
329          + change Evap over land. (update aim.5l_cs output)
330     o added missing .cvsignores and made uniform across expts
331     o changed configuration of tidal_basin_2d expt
332     o added pkg/debug functions for tracing code in fatal crashes
333     o tidied pkg/monitor to use MONITOR_OPTIONS.h
334     o new fn in pkg/monitor to stop model if solution grows too big
335     o removed lots of single quotes from comments
336    
337    checkpoint50e_post
338    o make KPP work with PTRACERS
339     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
340       nearly a copy of kpp_transport_s
341     - there is no analogue to SurfaceTendencyS, so I have to use
342       gPtr(of the surface layer) instead
343    o add a new platform SunFire+mpi (SunFire 15000) to genmake
344    checkpoint50e_pre
345    
346    checkpoint50d_post
347    o change kpp output from multiple-record state files to single-record state
348      files analogous to write_state.F
349    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
350      analogous to the cg2d-related output.
351    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
352      so that writing to internal file fn (with length 512) fails.
353    checkpoint50d_pre
354    
355    checkpoint50c_post
356    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
357    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
358    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
359    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
360    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
361    
362    checkpoint50c_pre
363    Merging from release1_p13:
364    o bug fix for pkg/seaice dynamic solver
365    o Added SEAICE_initialHEFF to pkg/seaice
366    
367    checkpoint50b_post
368    o store u*,v* in gU,V instead of in guNm1,gvNm1
369    o in order to put the momForcing out of the Adams-Bashforth:
370      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
371      to timestep.F
372    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
373    o re-generate output for highly sensitive test-exp:
374       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
375    
376    checkpoint50b_pre
377    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
378    o corrected CPP option mismatch in exf_Bulk... functions for case
379      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
380    
381    checkpoint50a_post
382    o Bug fix for merging between c50 and KPP.
383      ikey was passed from thermodynamics to kpp_calc via
384      common block rather than being recomputed in kpp_calc,
385      in contradiction with new key itdkey.
386      New key ikppkey created, and tamc.h headers updated.
387    
388    checkpoint50
389    - 2nd step of merge with ecco-branch:
390      merge changes in ecco-branch back into main trunk
391    - bug fix in find_alpha
392    - more storing in gmredi_calc_tensor.F, kpp_routines.F
393    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
394    - merged some sliced AD support routines
395    
396    checkpoint49
397    merged from ecco-branch:
398    o exf:
399      - Enable initialisation of forcing fields to constant
400        (runtime) values.
401      - in exf_getffields.F
402        Reduce i-/j-loop to interior domain, discarding overlaps.
403        That also fixes wrong TAF-key computations for key_1, key_2
404        with bulf formulae.
405      - exf_init.F modify #ifdef for exf_init_evap
406      - exf_getffieldrec.F, ctrl_getrec.F
407        The following INT-usages are not safe:
408          fldsecs  = int(fldsecs/fldperiod)*fldperiod
409          fldcount = int(fldsecs/fldperiod) + 1
410        and were modified.
411    o autodiff: checkpoint_lev...
412      - updated storing for bulk formulae (some arrays were missing)
413      - added state for seaice package
414      - synchronized with main branch
415    o DIVA:
416      Modif.s in
417      - the_main_loop.F
418      - the_model_main.F
419      and added cost_final_restore.F cost_final_store.F
420      o With these changes, it is possible to fully separate
421        the first forward run to compute the cost function (mdthe_main_loop)
422        and adjoint runs over individual DIVA intervals (adthe_main_loop)
423        into separate model executions.
424        This enables better tuning of DIVA to given queue sizes.
425      o Loss of cost function value in consecutive DIVA runs is
426        fixed by storing to 'costfinal' file.
427      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
428        beginning/end of adjoint integration is accounted for.
429      The current changes apply to TAF-1.4.26.
430      TAF has one remaining bug, requiring one manual change
431      (see MITgcm manual).
432    o cal: synchronized between MAIN and ecco-branch
433    
434    checkpoint48i_post
435    o Changes to restore differentiability of code w.r.t. previous tag
436      (mostly adding new routines to make list and replacing
437      pressure by totPhiHyd).
438    o Updated and merged grdchk package
439      - has both ADM and TLM checks
440      - works for single- and multi-proc.
441      - output cleaned
442      - worked successfully for parallel DIVA
443    o genmake:
444      - Adding -platform=SP4
445      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
446    o Modif. for DIVA:
447      ctrl_unpack should not be called in intermediate DIVA interval.
448      (similar thing would apply for active files such as
449      tbar, sbar, psbar, which should not be reinitialised;
450      only relevant for ecco-branch)
451    
452    checkpoint48h_post
453    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
454    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
455    o Added SEAICE_initialHEFF to pkg/seaice
456    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
457    
458    checkpoint48g_post
459    --- EOS:
460    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
461      store total Potential in totPhyHyd for diagnostics & EOS.
462    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
463    --- Pressure/geopotential gradient:
464    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
465    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
466      ( changes results of global_ocean_pressure )
467    o NLFS + z-coord.: add eta*Rho' contribution.
468    o accurate phiHyd when using interface-W at the middle between 2 centers
469     ( changes results of ideal_2D_oce )
470    o includes r* 2nd term in potential gradient.
471    
472    checkpoint48f_post
473    Merging from release1_p12:
474    o Modifications for using pkg/exf with pkg/seaice
475      - improved description of the various forcing configurations
476      - added basic radiation bulk formulae to pkg/exf
477      - units/sign fix for evap computation in exf_getffields.F
478      - updated verification/global_with_exf/results/output.txt
479    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
480      (SBO) core products, including oceanic mass, center-of-mass,
481      angular, and bottom pressure (see pkg/sbo/README.sbo).
482    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
483      to avoid negative values in shallow regions.
484      - updated verification/natl_box/results/output.txt
485      - updated verification/lab_sea/results/output.txt
486    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
487    o Added useSingleCpuIO option (see PARAMS.h).
488    o Updated useSingleCpuIO option in mdsio_writefield.F to
489      work with multi-field files, e.g., for single-file pickup.
490    o pkg/seaice:
491      - bug fix in growth.F: QNET for no shortwave case
492      - added HeffFile for specifying initial sea-ice thickness
493      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
494    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
495      kpp_transport_t.F, forward_step.F, and the_main_loop.F
496    o pkg/seaice:
497      - adjoint-friendly modifications
498      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
499    
500    checkpoint48e_post
501    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
502    o dynamics: change definition of computational domain & adapt mom_fluxform
503      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
504    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
505        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
506        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
507        global_ocean.90x40x15 global_with_exf global_ocean_pressure
508        inverted_barometer solid-body.cs-32x32x1
509      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
510    
511    checkpoint48d_post
512    o in preparation for r*:
513     a) use pre-computed gradient of hydrostatic potential:
514        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
515     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
516        => affects results of glob_oce_pressure (different truncation error)  
517      update output.txt of ideal_2D_oce & global_ocean_pressure
518    
519    checkpoint48d_pre
520    o in preparation for r*:
521      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
522      pass the 2 comp. of the grad. as arguments to momentum S/R.
523      but for the moment, only used if it does not change the results.
524    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
525    
526    checkpoint48c_post
527    Modifications in treatment of initial flux forcing controls
528    to avoid extra storing of flux fields.
529    
530    checkpoint48c_pre
531    o Added tidal_basin_2d experiment (currently 1D!)
532    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
533    
534    checkpoint48b_post
535    o r* coordinate added in #ifdef NONLIN_FRSURF block.
536     (modification to pressure gradient not yet implemented)
537    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
538      (for U & V) that are used for vertical advection of momentum.
539    
540    checkpoint48a_post
541    o In preparation for r*, use temp. array to compute vertical transport
542       in flux-form momentum pkg. => change results of few test-exp.
543      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
544                        lab_sea, natl_box & plume_on_slope
545    
546    checkpoint48
547    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
548    
549    checkpoint47j_post
550    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
551    o moved adexch from forward_step to addummy_in_stepping
552    o added exch in ctrl_map_...
553    o aveFreq.=0. at end of cost_final to avoid overwrite in
554      reverse checkpointing loop
555    o Yet more changes in gmredi:
556      * adgmredi_calc_tensor
557        avoiding all recomputation of gmredi_slope_limit
558      * adgmredi_x/y/rtransport
559        added flag for excessive storing to avoid recomp. of
560        u/v/rtans, dTdx/y/z
561        -> this is not really necessary and very memory-consuming
562      * adgmredi_slope_psi:
563        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
564      * gmredi_slope_limit
565        re-activated full calculation of taperfct for case 'ac02'
566    o updating verification/ adjoints of carbon, global_ocean.90x40x15
567    
568    checkpoint47i_post
569    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
570    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
571      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
572    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
573    o gmredi: fix few bugs.
574    
575    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
576    This will be a good checkpoint to plug into the ecco-branch.
577    o few modif.'s to get latest version adjointed
578      (mainly kick out code in ini_linear_phisurf)
579    o modif's to run adjoint with exactConserv
580    o case GM_BOLUS_ADVEC should be cleaned
581      S/R gmredi_slope_psi should be cleaned
582    o verification/carbon now has exactConserv=.TRUE.
583    
584    checkpoint47g_post
585    o time-average AIM output: becomes independent from statvars time-average
586      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
587    o After TAF bug fix:
588      Tested adjoint of gmredi package.
589      Tests were done with checkpoint47 rather than with latest
590      checkpoint47f_post since the latter is broken for the adjoint
591      verification/carbon/ contains both ADM and TLM gradient checks.
592    Here they are, before they get changed/lost/stolen.
593    Mostly modif.'s to fix numerical sensitivities.
594    Gradient checks OK for
595    - GM_taper_scheme:
596      * clipping
597      * ac02
598      * linear
599      * glw91
600      * dm95
601      * ldd97
602    - GMREDI_OPTIONS:
603      * GM_VISBECK_VARIABLE_K
604      * GM_NON_UNITY_DIAGONAL
605      * GM_EXTRA_DIAGONAL
606      * GM_BOLUS_ADVEC
607    in conjunction with data.gmredi parameters to be checked in
608    in a few minutes under verification/carbon/code/
609    
610    checkpoint47f_post
611    Merging from release1_p10:
612    o modifications for using pkg/exf with pkg/seaice
613      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
614        and SEAICE_EXTERNAL_FLUXES
615      - pkg/exf CPP options EXF_READ_EVAP and
616        EXF_NO_BULK_COMPUTATIONS
617      - usage examples are Experiments 8 and 9 in
618        verification/lab_sea/README
619      - verification/lab_sea default experiment now uses
620        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
621    
622    checkpoint47e_post
623    o created a tag prior to creating a branch
624    
625    checkpoint47d_post
626    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
627      at the bottom boundary had an erroneous half slip boundary condition
628    o added bottom drag and no slip boundary condition capabilities to
629      oceanic pressure coordinates code
630    o added new verification experiment global_ocean_pressure, this experiment is
631      also described in the tutorial section of the manual
632    checkpoint47d_pre
633    
634    checkpoint47c_post
635    o Added a verification experiment for a global cubed-sphere ocean run
636      -  verification/global_ocean.cubed32x32x30
637      -  uses pkg/therm_seaice and pkg/bulk_forcing
638    
639    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
640    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
641      when using P-coordinate; only implemented for atmospheric config.
642    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
643      NOTES: requires option NONLIN_FRSURF to be "#define".
644    o update advect_xz/results/output.txt (left from checkpoint44g_post)
645    
646    checkpoint47b_post
647    Merging from release1_p9:
648    o pkg/seaice
649      - removed GOTO's and added taf directives
650      - double precision constants to reduce the g77 (Linux)
651        to F77 (SGI) differences reported in release1_p8
652    o tools/genmake
653      - added SGI options
654    o verification/testscript
655      - updated to that of checkpoint47a_post
656    o verification/global_ocean.90x40x15/input/eedata
657      - modified for SGI f77 compatibility
658    o verification/lab_sea
659      - added description of sea-ice model
660      - added missing matlab routines
661      - added test of thermodynamics parallelization
662    
663    checkpoint47a_post
664    o new pkg: aim_v23
665     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
666       for now, keep the same surface forcing as before.
667     - Part-Cell implemented into AIM; check that Heat & Water are conserved
668     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
669     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
670    o add diagnostic of surface correction term in monitor output
671    
672    o bulk_force and therm_seaice
673    - Two packages:  bulk_force (Bulk forcing)
674      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
675    - Earlier integration from Stephaine Dutkiewicz
676      and Patrick Heimbach.
677    - Two ifdef statements for compile time,
678       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
679    
680    checkpoint47
681    differentiable version of checkpoint46n_post
682    o bug fix in quasihydrostaticterms
683    o * "clean" adjoint code (in terms of extensive recomputations)
684        can now be obtained for all GMREDI options (i.e. for
685        - GM_VISBECK_VARIABLE_K
686        - GM_NON_UNITY_DIAGONAL
687        - GM_EXTRA_DIAGONAL
688        - GM_BOLUS_ADVEC )
689      * However, wrong gradient check problem remains unsolved.
690      * New CPP options have been introduced for different
691        tapering schemes
692    o external_fields_load now part of differentiation list
693    o pressure needs multiple storing;
694      would be nice to have store_pressure at beginning or
695      end of forward_step, e.g. by having phiHyd global (5-dim.)
696      (NB: pressure is needed for certain cases in find_rho,
697      which is also invoked through convective_adjustment).
698    o recomputations in find_rho for cases
699     'JMD95'/'UNESCO' or 'MDJWF' are OK.
700    o #define ATMOSPHERIC_LOADING should be differentiable
701    o ini_forcing shifted to begining of initialise_varia
702    o Incorporating QNVS line search routines into MITgcm
703      (this is separate code, and therefore not under pkg)
704      lsopt/, optim/
705    o Updated verification/carbon/
706      - #define GM_VISBECK_VARIABLE_K
707      - GM_taper_scheme    = 'ldd97'    
708    
709    checkpoint46n_post
710    Merging from release1_p8:
711    o verification/natl_box:
712      updating new external_fields_load routine
713    o New package: pkg/seaice
714      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
715      The sea-ice code is based on Hibler (1979-1980).
716      Two sea-ice dynamic solvers, ADI and LSR, are included.
717      In addition to computing prognostic sea-ice variables and diagnosing
718      the forcing/external data fields that drive the ocean model,
719      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
720      The implied surface heat flux is then stored in variable
721      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
722      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
723      non-local transport term.  Because this call precedes model
724      thermodynamics, temperature under sea-ice may not be "exactly" at
725      the freezing point by the time theta is dumped or time-averaged.
726      N.B.: fairly large differences in accuracy occur across
727            different platforms/compilers; comparison between
728            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
729            generated output gives:
730       T           S           U           V
731      C D M    c        m  s        m  s        m  s        m  s
732      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
733      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
734      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
735    
736      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
737    o GAD:
738      - generated new common blocks to account for call of
739        same gad routines with differing traceridentities
740        (needed to modify tracerIdentity indices in GAD.h)
741      - generated separate common blocks for case useCubedSphereExchange
742        (Department of Futurology)
743      - parameter lists to gmredi_?transport: added tracerIdentity
744      - added new key indices to tamc.h
745    o external_fields_load:
746      - added this routine to TAF list
747      - needed to make some common blocks global and additional storing
748        along the same lines as exf package (checkpoint_lev?_directives.h)
749    o exf:
750      updated external forcing package
751      - bug fixes carried over from ecco-branch
752        (missing OBCS_OPTIONS.h in two routines)
753      - enable easy to use "no forcing".
754      - added exf I/O for atmospheric loading
755      - added exf I/O for runoff data
756      - transfered scaling between exf <-> MITgcm to exf namelist
757    o Adding new verification experiment global_with_exf.
758      This verification experiment is almost identical to the
759      global_ocean.90x40x15 experiment, except that it uses
760      the exf (and cal) package instead of the
761      external_fields_load routine (cf README file).
762    
763    checkpoint46m_post
764    o modified testscript to return -- when there are no lines of "%MON" output
765    o added new flag "quasiHydrostatic" for QH mode
766      and new routine quasihydrostaticterms()
767    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
768      New routine: mom_u_coriolis_nh()
769    o fixed sign of non-hydrostatic metric terms in u and v equations.
770      Depend on correct sign of gravitySign.
771    o added work.pc* to .cvsignore in aim directories using ifc
772    o introduced flag for controllin non-hydrostatic metric terms
773    o removed gravitySign from PARM04
774    o switched to g77/ifc from pgf77 in aim experiments
775    
776    checkpoint46l_post
777    o made convective adjustment work with pressure coordinates:
778     - changed the direction of k-loop in convective_adjustment.F for the
779       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
780     - adjusted the reference pressure k-index in convective_adjustment.F
781     - adjusted the convection condition in convect.F (in analogy to
782       calc_ivdc.F)
783     - convective_adjustment no longer computes anything on the halos
784     - removed the warnings about negative salinity from find_rho.F and
785       find_alpha.F; instead the new routine look_for_neg_salinity, called
786       at the beginning of find_rho, find_alpha, and find_beta, does a
787       check of the entire slice, if CPP-option
788       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
789    checkpoint46l_pre
790    
791    checkpoint46k_post
792    o fixed the verification/global_ocean.90x40x15 experiment:
793     - new bathymetry (the world according to A., JMC, and M.)
794     - new initial fields and forcing fields (*.bin files)
795     - new POLY3.COEFFS (for the next release one should switch to a full
796       equation of state: JMD95P or MDJWF)
797     - fixed several errors and redundancies in the data file
798     - experiment uses looped cells
799     - added matlab directory with diagnostic scripts for plotting of output
800    
801    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
802     - read AIM physics parameters from a file (data.aimphys)
803     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
804    
805    checkpoint46j_post
806    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
807    o move wVel computation at the end of the time step, in S/R integr_continuity
808    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
809    o update timeave pkg for wVel diagnostic.
810    checkpoint46j_pre
811    
812    checkpoint46i_post
813    o Clean up AIM package (and keep the results unchanged):
814      include CPP_OPTION and use IMPLICT NONE in all routines ;
815      declare all the variables _RL ; use _d 0 for all numerical constants.
816      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
817    
818    checkpoint46h_post
819    o cleaned up the use of rhoNil and rhoConst.
820      - rhoNil should only appear in the LINEAR equation of state, everywhere
821        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
822        and the dynamical equations are all divided by rhoConst
823    o introduced new parameter rhoConstFresh, a reference density of fresh
824      water, to remove the fresh water flux's dependence on rhoNil. The default
825      value is 999.8 kg/m^3
826    o cleanup up external_forcing.F and external_forcing_surf.F
827      - can now be used by both OCEANIC and OCEANICP
828    checkpoint46h_pre
829    
830     Added code to convert surface volume flux (fresh water) into
831     a mass flux when using P coordinates in the ocean (OCEANICP).
832     Note: It assumes you have set rho0=rhoConst=density of fresh water.
833    
834    checkpoint46g_post
835    o Include a new diagnostic variable phiHydLow for the ocean model
836      - in z-coordinates, it is the bottom pressure anomaly
837      - in p-coordinates, it is the sea surface elevation
838      - in both cases, these variable have global drift, reflecting the mass
839        drift in z-coordinates and the volume drift in p-coordinates
840      - included time averaging for phiHydLow, be aware of the drift!
841    o depth-dependent computation of Bo_surf for pressure coordinates
842      in the ocean (buoyancyRelation='OCEANICP')
843      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
844        Theta, Salinity, and Pressure in the parameter list. This routine is
845        presently contained in find_rho.F. This routine does not give the
846        correct density for 'POLY3', which would be a z-dependent reference
847        density.
848    o cleaned up find_rho
849      - removed obsolete 'eqn' from the parameter list.
850    o added two new verification experiments: gop and goz
851      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
852    checkpoint46g_pre
853    
854    checkpoint46f_post
855    o Enable tangent linear (forward mode) gradient checks:
856      - extended active file handling to g_... files
857      - added TANGENT_SIMULATION to theSimulationMode
858      - extended grdchk package accordingly
859    o added tangent linear setup in verification/carbon/code_ftl
860    o added adjoint setup in verification/front_relax/code_ad
861    
862    checkpoint46e_post
863    o Added new equation of state -> MDJWF
864      - EOS of McDougall et al., 2002, JAOT, submitted
865      - caveat: the equation of state is only valid for a smaller (more
866        realistic?) range of values than JMD95P/Z and UNESCO
867      - added masks to the calculation of pressure in store_pressure
868      - added more check values for density in check_eos (ini_eos.F), some of
869        the old check values are out of the range of the MDJWF-eos, so don't
870        expect perfect matches for those
871    checkpoint46e_pre
872    
873    checkpoint46d_post
874    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
875      'OCEANICP', also initialised field pressure correctly in ini_eos in the
876      case of pressure coordinates. eosType='JMD95Z' in
877      combination with buoyancyRelation='OCEANICP' now causes an error.
878    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
879      in find_alpha/beta.
880    checkpoint46d_pre
881    
882    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
883      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
884    
885    checkpoint46c_post
886    o Changes necessary for ocean in p-coordinates
887     -  Added new buoyancy relation = 'OCEANICP'
888     -  Added new parameters = gravitySign (this used to be contained inside
889        the factor dRdZ which I added when we first switched to R coordinates).
890     X GM/Redi is not compatible (yet)
891     X bottom drag and no-slip need to be debugged.
892    checkpoint46c_pre
893    
894    checkpoint46b_post
895    o Added new equation of state -> JMD95Z and JMD95P
896      - EOS of Jackett and McDougall, 1995, JAOT
897      - moved all EOS parameters into EOS.h
898      - new routines ini_eos.F, store_pressure.F
899    o Added UNESCO EOS, but not recommended because it requires
900      in-situ temperature (see JMD95)
901    o Modified formatting for knudsen2.f in utils/knudsen2 and added
902      unesco.f to be used with POLY3
903    checkpoint46b_pre
904    
905    checkpoint46a_post
906    o Added (atmospheric) pressure loading
907      - new field in FFIELDS.h, etc...
908      - new cpp flag ATMOSPHERIC_LOADING
909    o Changed hFacC to _hFacC in calc_phi_hyd.F
910    o Added SHORTWAVE_HEATING to some files for consistency
911    checkpoint46a_pre
912    
913    checkpoint46
914    further merges from release1_p5
915    o new ctrl package
916      - adopted from ECCO environment to enable optimization
917      - added Eliassen Palm fluxes to controls
918    o added Eliassen Palm flux controls to gradient check package
919    o cost package
920      - Compatible with new ctrl package
921      - added Eliassen Palm cost hooks
922      - modif's of existing cost functions
923    o Adjoint-related bug fixes in kpp:
924      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
925      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
926    o autodiff package
927      - flow directives:
928        + new for S/R do_the_model_io
929        + enhanced for S/R checkpoint
930        + new gmredi.flow
931      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
932        disable adcommon.h/g_common.h by default.
933      - fixed problem for adjoint of global_max
934    o modified verification/carbon/
935    o New setup for adjoint of global_ocean
936    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
937    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
938    o incorporated hooks for sponge layer code (external_forcing.F)
939    
940    checkpoint45d_post
941    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
942    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
943      (affects plume_on_slope "cg2d" output)
944    o add new parameter deltaTfreesurf for free-surface time stepping
945    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
946    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
947    o change phiMin in exp1 (to agree with documentation)
948    o add new flags:
949     - T,S forcing inside/outside Adams-Bashforth
950     - turn off temp,salt advection and/or forcing
951     - for each tracer, define internal flag for multiDimAdvection & A-B
952    o monitor: change definition of KE to check conservation of Energy
953    
954    checkpoint45c_post
955    o Removed f90 comments ("!")
956    o Modified initialisations to enable exf package for MITgcm
957      (without invoking ECCO_PACKAGE).
958    o modifications to gradient check package (Martin Losch)
959      - enable centered differences
960      - modified format of standard output
961    
962    checkpoint45b_post
963    o cleaned exchange calls in cg2d
964    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
965    o included CPP option SINGLE_LAYER_MODE in thermodynamics
966      to configure barotropic setup (Martin Losch)
967    o moved some initialisations within bi,bj loop in dynamics
968      (TAF flow dependency)
969    o in initialise_varia, moved call packages_init_variables
970      before convective_adjustment_init
971      (corresponding adjustment of TAF tape initialisation).
972    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
973    
974    checkpoint45a_post
975    o compute Rho over the whole domain (extend iMin,jMin indices)
976    o specific exchange for X-slice domain (case Ny=1)
977    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
978    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
979    
980    checkpoint44h_post = checkpoint45
981    o Fix to restore differentiability:
982      place at which packages_init_variables is called in
983      initialise_varia is crucial for reverse control flow.
984    o modifications in GMRedi to enable stable adjoint
985      (corresponding modif's in thermodynamics, dynamics)
986    o added missing hook for sponge layer code in external_forcing
987    o modified test cost functions
988    o storing in gad_advection (plus removal of write(0,*)!
989    o missing headers TR1.h added in convective_adjustment routines
990    o errorMessageUnit set non-equal zero in eeboot
991      (conflict on some platforms, e.g. IBM SP3)
992    o modified carbon verif.
993    
994    checkpoint44h_pre
995    o vertical grid option: allow to put the Interface at the middle between
996      2 cell-centers ; replace delZ in pkg/kpp by drF.
997    o GM Advective form: Tracers are advected using the residual transport (=
998      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
999    
1000    checkpoint44g_post
1001    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1002      results) ; ifdef missing in thermodynamics.F
1003    
1004    checkpoint44f_pre,checkpoint44f_post
1005    o added PTRACERS package
1006      This allows an arbitrary number of passive tracers to be integrated
1007      forward simultaneously with the dynamicaly model.
1008      + Implemented so far:
1009        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1010        - I/O and checkpointing
1011        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1012      + Not implemented so far:
1013        - KPP
1014        - OBCS
1015      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1016        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1017        line in data.pkg.
1018      + This package is disabled by default since it increases storage.
1019    
1020    
1021    o testscript: added -cleanup option
1022    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1023                 b) enable to filter 2D fields.
1024    
1025    checkpoint44e_pre,post
1026    o re-wrote convective adjustment to use pre-calculated weights
1027      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1028      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1029      Original calls to convect() still in place.
1030    
1031    chkpt44d_pre,post
1032    o added missing EXCLUDE_MONITOR flags
1033    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1034      (incompatible typ in MIN/MAX expressions caused problems
1035      on IBM SP3)
1036    o in genmake added variable MAKEDEPEND
1037      plus resetting for case SunOS
1038    o added timer_stats.c routine for IBM SP3
1039    o removed variables in dynamics
1040    !!! I forgot to create tag chkpt44d_pre !!!
1041    !!! But chkpt44d_pre = chkpt44c_post    !!!
1042    
1043    o real fresh water flux implemented with non-linear free-surface.
1044    
1045    chkpt44c_pre,post
1046    o few fix (mask in shap_s2, EmPmR in external_field_load,
1047      USE_NATURAL_BCS in solve_for_P);
1048    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1049    
1050    checkpoint44b_pre/_post
1051    o merge of relevant stuff from the ecco-branch:
1052      - genmake: removed $S64 overwrite for case SunOS
1053      - pkg/exf: update and corrections for field swapping and obcs
1054      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1055                  harmonized between ECCO and MITgcm
1056      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1057                      updated checkpointing_lev... lists for obcs
1058      - model/src: minor changes in forward_step, plot_field
1059                   added directive for divided adjoint in the_main_loop
1060      - pkg/mdsio: added mdsio_gl_slice
1061    
1062    o check parameters & config (chkpt44a_pre,post)
1063    o OBC and NonLin_FrSurf.
1064    
1065    checkpoint44
1066    o fix bug in mom_vi_del2uv
1067    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1068    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1069    o update AIM experiments (NCEP input files)
1070    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1071    o added some stuff for AD
1072    
1073    checkpoint43
1074    o added two new advection tests
1075    o added global 4x4 degree ocean test
1076    o added test of H&S94 with free surface on cube
1077    o some final mods for gradient check, adjoint,...
1078    
1079    checkpoint42
1080      Fixed AD-related problems:
1081    o Store directives up-to-date with re-arranged Adams-Bashforth
1082      (mainly thermodynamics.F)
1083    o New store directives for multi-dim. advection schemes
1084      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1085      * new common block and key passkey
1086      (mainly gad_advection.F)
1087    o Modified store directives for split of dynamics/thermodynamics
1088      for the case ALLOW_KPP
1089    o Cleaned argument list for timestep_tracer.F
1090    
1091    checkpoint41
1092    o re-formatted/added comments in prologues of key subroutines
1093      to work with protex
1094    
1095    checkpoint40
1096    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1097    o added FLT (floats) package from Arne along with demo. experiment
1098    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1099      implementation of forward-in-time forcing terms
1100    o more mods for non-linear free-surface including new variable
1101    o modified multi-dim method to work on cube
1102    o bug fix in KPP (from DM)
1103    
1104    checkpoint40pre9
1105    o added DST advection schemes
1106    o fix MPI bug on SGI's
1107    o modifications for non-linear free-surface
1108    o fixed conditionals for fixed flow/passive tracer only mode
1109    o added tension/strain form of stress tensor
1110    o changes to commenting of arguments for TAF/TAMC
1111    o added/updated many matlab scripts
1112    o added multi-dimensional advection method for tracers
1113      
1114    checkpoint40pre8
1115    o new package rw/
1116      Added method for dumping intermediate local arrays:
1117      mdsio_writetile - same as mdsio_writefield except works from inside
1118                        bi,bj loop
1119      mdsio_writelocal - same as mdsio_writetile except works for local
1120                         arrays
1121      write_local_r? - higher-level wrapper for mdsio_writelocal
1122      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1123      Example given at end of mom_vecinv.F that dumps some local arrays.
1124    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1125      control flux-form versus vector invariant code.
1126      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1127      or genmake -DISABLE ...
1128    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1129      (additional storing is now needed for case vecinv;
1130      currently nothing implemented to switch this storing off
1131      in case fluxform is used since no CPP flag available).
1132    
1133    checkpoint40pre7
1134    o bug fix in dynamics.F
1135      calc_viscosity called before k=1,Nr loop.
1136    o added some #ifdef's ALLOW_PASSIVE_TRACER
1137    o cleaned initialisations in ctrl_map_ini
1138      related to TAF
1139    
1140    checkpoint40pre6
1141    o split dynamics into thermodynamics & dynamics
1142    o corresponding split of calc_diffusivity into
1143      calc_diffusivity, calc_viscosity
1144      (kpp_calc_diff, kpp_calc_visc).
1145    o Added diffkr, kapgm to control variables
1146    o bug fix in gmredi_slope_limit for ldd97
1147    
1148    checkpoint40pre5
1149    o proper initialization of Adams-Bashforth time stepping
1150      + uses forward step for very first step of model (iter=0)
1151    o re-generated *all* output since almost all output is modified by this
1152      change (sorry but we've been putting this one off for about 2 years)
1153      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1154        *not* regenerated since they are already out of date and I don't
1155        want to create the impression that they are suddenly working.
1156    o removed KAP stuff for DEC's
1157    o modified/added many .cvsignore files in */code and */input
1158    o added new expt "solid-body.cs-32x32x1"
1159      + this uses an alternative form of ini_curvilinear_grid.F which
1160        is not necessarily any better than the current one...
1161    
1162    checkpoint40pre4
1163    o added re-initialisations of utrans,vtrans,rtrans in
1164      calc_common_factors which are crucial for TAF.
1165    o extended iMin,jMin range for calc_common_factors,
1166      calc_diffusivity
1167    o added option ALLOW_PASSIVE_TRACER
1168    o a few minor updates and fixes
1169    
1170    checkpoint40pre3
1171    o created calc_gtr1.F for gad package
1172    o split the_main_loop and re-introduced forward_step
1173    o some recomputations of nIter0 for TAMC
1174    
1175    checkpoint40pre2
1176    o Updated to latest branch of AJA, JMC
1177    o Added gradient check package
1178    o Added routines for passive tracer handling
1179    o Added carbon sequestration sensitivity experiment
1180    
1181    checkpoint39
1182     o Modifications and fixes to support TAMC
1183       (mainly missing or wrong directives)
1184     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1185       in addummy_in_stepping
1186     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1187     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1188     o Included following packages:
1189       cal: calendar
1190       exf: external forcing
1191       ecco: essential routines to control use of cal, exf
1192             (NB: this is not the full ECCO environment)
1193     o disabled some packages by default in genmake
1194    
1195    checkpoint38
1196     o see notes_c37_adj.txt
1197     o corrected wrong layer index in external_forcing_t
1198     o replaced the_main_loop/forward_step by the_main_loop
1199     o removed forceoutput from write_state
1200       (replaced criteria for initial/final state)
1201     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1202    
1203    checkpoint37
1204     o mdsio.F routine split and packaged in pkg/mdsio
1205       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1206        used unless genmake -disable=mdsio)
1207     o allow a more precise surface-geopotential gradient for the atmosphere
1208       taking into account the change in space of Alpha (=1/rho) at the surface.
1209     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1210       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1211     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1212       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1213       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1214     o Time-Average diagnostics defined as a pseudo package "timeave".
1215     o pickup files : old pickup (before c35) did not work with new code (c35
1216       and after) unless activating 2 commented lines in initialise-varia.
1217     o Non-Hydrostatic pickup file Pb fixed.
1218     o bug with Rigid-lid version (since c35) fixed.  
1219    
1220    checkpoint36
1221     o implement Crank-Nickelson barotropic time-stepping
1222     o recover Time-Average diagnostics
1223     o fix Pb in checkpoint (PR#19)
1224     o AIM become a standard package ; clean unused CPP_kees
1225    
1226    checkpoint35
1227     o subtantial rewrite of dynamics.f
1228     o allows staggered time-stepping
1229     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1230     o added bottom drag (linear + quadratic)
1231    
1232    checkpoint34
1233     o Modified exchange routines for correct reverse simulation.
1234     o Added verification output to comply with bug fix in impldiff.F
1235       as of c33 (exp2, natl_box).
1236     o Corrected store directives in dynamics.F
1237     o Corrected array boundaries in impldiff.F
1238     o Corrected array dimensions in gmredi.
1239       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1240     o Added routine GLOBAL_SUM_INT to global_sum.F
1241     o Added mdsio_gl.F for ECCO purposes.
1242    
1243    checkpoint33
1244     o Fixed bug in lower BC in impldiff.F
1245     o Fixed confusion about units of forcing arrays in FFIELDS.h
1246       namely Fu,Fv,Qnet,Qsw,EmPmR:
1247       - Removed verification/natl_box/code/external_fields_scale.F
1248         (did not differ from that in model/src)
1249       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1250         (see FFIELDS.h for description)
1251       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1252         kpp_calc.F and kpp_transport_t.F
1253       - Removed model/src/external_fields_scale.F and calls to it
1254       - verification/natl_box uses flux data with "atmospheric" sign so
1255         a special version of external_fields_load.F is used to
1256         change the data as it's read in. This way, the arrays
1257         have the right units and signs at all times tha a user could
1258         possibly use them.
1259     o Corrected genmake to delete a temporary file during configuration
1260    
1261    checkpoint32
1262     o Scaling of forcing fields moved from external_forcing.F to
1263       external_fields_scale.F, called directly after loading fields.
1264     o Surface relaxation terms added to surface tendency fields in
1265       extra subroutine.
1266     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1267       fields.
1268     o Changes in GMRedi to comply with packaging structure.
1269     o Modifications and bug fixes in KPP package.
1270     o Verification experiment for KPP added (verification/nat_box/)
1271    
1272    checkpoint31
1273     o Packages interface brought in line with defined standard
1274       -> new routines packages_...F
1275       -> changes in initialise_fixed.F, initialise_varia.F
1276       -> enables initialisation interface for ECCO package
1277     o Rescaling of external forcing fields immediately after read
1278       (removed from external_forcing.F)
1279       -> new: surface_fields_scale.F
1280       -> affects ini_foorcing.F, external_fields_load.F
1281     o Computation of surface tendencies before tendency updates.
1282       -> new: external_forcing_surf.F
1283     o Change of variable names useGMRedi, useKPP, useECCO
1284     o Further changes in dynamics.F, impldiff.F for TAMC
1285     o Tested for experiments 0, 2, 4.
1286       - not yet tested for GMRedi.
1287       - not yet tested for KPP.
1288    
1289    checkpoint30
1290     o Updates for OBCs
1291     o New experiment for test OBCs (internal_wave)
1292     o New output.txt in verification/exp4/results/
1293     o Updates for KPP: calculation of viscosity corrected, new variables
1294       kpp_dumpFreq and kpp_taveFreq
1295     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1296       and entry for T90 in genmake
1297    
1298    checkpoint29
1299     o packaged KPP and GM/Redi
1300    
1301    checkpoint28
1302     o Corrected initialization of hFacMin for difference vertical coordinates
1303     o Modified calculation of partial cell thickness to more robust algorithm
1304     o config_summary.F: replaced write_1D_... by write_0D_...
1305       read_write.F: added subroutines write_0D_...
1306     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1307       included some initialisations required for TAMC.
1308     o routine calc_isoslopes: modified sqrt computation to make it
1309       differentiable for zero argument.
1310     o routines dynamics, impldiff:
1311       included store directives and tape key computations required for TAMC.
1312     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1313    
1314    checkpoint27
1315     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1316       formulation works properly with variable resolution.
1317     o restructured the calling tree between the_model_main() and dynamics()
1318     o split initialise() into initialise_fixed() and initialise_varia()
1319     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1320       in new routine ini_psurf()
1321    
1322    checkpoint26
1323     o moved some #ifdef in optional routines to encompass everything
1324       except the argument declarations. This was using up some memory.
1325     o fixed macros like _ADT to work with both versions of Linux cpp
1326     o cleaned up some unused and uninitialized variables
1327       (helps when debugging with strict compile options)
1328     o split up CPP_EEOPTIONS.h into options and macros
1329       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1330     o patch for 2 processor JAM mode
1331    
1332    checkpoint25
1333     o updates for OBCs and NH
1334     o dramatically reduced memory usage
1335     o added "JAM" routines for use on Artic network
1336     o parameterization of convection by implicit vertical diffusion
1337     o added a diagnostic of convective index
1338     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1339       (this is was partly for OBCs and NH but also in anticipation of
1340        an explicit free-surface option)
1341     o initial state input files for U and V
1342    
1343    checkpoint24
1344     o Removed some spurious "REAL"s
1345     o Updated KPP to latest version from JPL
1346     o Added a COS(latitude) in horizontal viscosity
1347    
1348    checkpoint23
1349     o Added del^4 diffusion for salt and temperature
1350     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1351    
1352    checkpoint22
1353     o Made many small changes: implicit none, format(i5), etc...
1354     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1355    
1356    checkpoint21
1357     o Introduced new I/O package that supports direct-access records (mdsio.F)
1358     o Split-up mid-level I/O routines
1359     o Updated input data for experiments 0,1,2,4 and 5
1360     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1361    
1362    checkpoint20
1363     o Tidied up open-boundaries some more
1364     o Added non-hydrostatic code
1365     o Fixed some input data
1366     o Modified MPI start-up to work in "coupled" context.
1367    
1368    checkpoint19
1369     o Tidied up directory structure for verification experiments.
1370     o Added new code for open boundaries.
1371     o Corrected advective terms near boundaries.
1372     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1373     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1374     o Split default parameters out of ini_parms.F into set_defaults.F.
1375    
1376    checkpoint18
1377     o Further changes for optional code generation with
1378       CPP - ugh!
1379    
1380    checkpoint17
1381     o Beginning to incorporating modularity
1382       for supporting atmos. and ocean configs.
1383     o Small changes for TAMC complinace
1384     o New ultra simple test case. Barotropic box
1385       configuration "exp0".
1386    
1387    checkpoint16
1388     o Minor changes to exchange routines to support
1389       accumulation in reverse mode. Adjoint of an
1390       assignment is an addition.
1391     o Changes to support compilation by TAMC (LR(1)
1392       syntax) and by g77 under Linux ( 72 character
1393       limit ).
1394    
1395    checkpoint15
1396     Rewrote exchange routines to allow
1397     o General tile <-> tile connectivity.
1398     o TAMC reverse mode flag ( is this really needed? )
1399     o Variable width overlap and exchange region widths.
1400     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1401       shmput/shmget, VIA, SYSV shmem and every other cool
1402       communication method.
1403    
1404    checkpoint14
1405     Consistent isomorphism chages made. These allow dynamical core
1406     to support both pressure and meters as a vertical coordinate.
1407    
1408    checkpoint13
1409     Release which corrects global_max problem and a couple
1410     of KGM time-averaging diagnostic errors. Also contains
1411     a double-gyre experiment setup as well as the baseline
1412     4 degree global template. The double gyre template is
1413     organised to allow it to be applied automatically to
1414     the baseline configuration.
1415    
1416    branch-point-rdot
1417     A few tidy-ups have been made bt the real point of this
1418     check-point (excuse the pun) is to allow a branch to be
1419     made for the purposes of adding the rDot alterations.
1420     I don't want to commit the rDot to the main-trunk until
1421     we've actually tested it...
1422    
1423    checkpoint12
1424     Tidy up and added generic genmake script (formerly
1425     configure script).
1426     Released to testers.
1427    
1428    checkpoint11
1429     Re-arranged initialise() and introduced ini_vertical_grid()
1430     and ini_masks_etc().
1431    
1432    checkpoint10
1433     Introduced the configure script.
1434     Separated out the diags package.
1435     Added template for writing time-averages of tile/intermediate quantities.
1436     Updated SIZE.h in exp2 and made the data big-endian.
1437    
1438    checkpoint9
1439     MPI fix. Filename changes (meta/data). salbin*y stuff.
1440     General tidy-up.
1441     SST.bin SSS.bin added to verification/exp2
1442    
1443    checkpoint8
1444     Inludes time-dependant forcing and time-averaging.
1445     Works at 4x4 and 2.8125x2.8125 global
1446    
1447    checkpoint7-4degree-ref
1448     Branch from checkpoint7. Released for application to
1449     global modeling and general modeling - process studies, regional
1450     model etc..
1451     Configured for verification/exp2 - 4 degree global, two process.
1452    
1453    checkpoint7
1454     Created by cnh
1455     Simple 4 degree global simulation
1456     configuration.
1457     Includes climatological wind,
1458     hydrography, bathymetry etc
1459     Does not include Heat Flux and E-P
1460    
1461    checkpoint6
1462     Created by cnh
1463     merged checkpoint5 with CD and
1464     spherical polar code.
1465     Still some problems with GM Redi
1466     abd full topography.
1467    
1468    checkpoint5
1469     Created by AJA
1470     contains updates to GM Redi
1471     and reordered timestepping loop
1472     for Implicit Diffusion.
1473    
1474  checkpoint4  checkpoint4
1475   Created by cnh   Created by cnh
1476   Contains memory saving macros ( _rdxc etc..) for when   Contains memory saving macros ( _rdxc etc..) for when

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