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revision 1.13 by cnh, Wed Sep 9 15:24:19 1998 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
1137    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/
1157      Added method for dumping intermediate local arrays:
1158      mdsio_writetile - same as mdsio_writefield except works from inside
1159                        bi,bj loop
1160      mdsio_writelocal - same as mdsio_writetile except works for local
1161                         arrays
1162      write_local_r? - higher-level wrapper for mdsio_writelocal
1163      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1164      Example given at end of mom_vecinv.F that dumps some local arrays.
1165    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1166      control flux-form versus vector invariant code.
1167      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1168      or genmake -DISABLE ...
1169    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1170      (additional storing is now needed for case vecinv;
1171      currently nothing implemented to switch this storing off
1172      in case fluxform is used since no CPP flag available).
1173    
1174    checkpoint40pre7
1175    o bug fix in dynamics.F
1176      calc_viscosity called before k=1,Nr loop.
1177    o added some #ifdef's ALLOW_PASSIVE_TRACER
1178    o cleaned initialisations in ctrl_map_ini
1179      related to TAF
1180    
1181    checkpoint40pre6
1182    o split dynamics into thermodynamics & dynamics
1183    o corresponding split of calc_diffusivity into
1184      calc_diffusivity, calc_viscosity
1185      (kpp_calc_diff, kpp_calc_visc).
1186    o Added diffkr, kapgm to control variables
1187    o bug fix in gmredi_slope_limit for ldd97
1188    
1189    checkpoint40pre5
1190    o proper initialization of Adams-Bashforth time stepping
1191      + uses forward step for very first step of model (iter=0)
1192    o re-generated *all* output since almost all output is modified by this
1193      change (sorry but we've been putting this one off for about 2 years)
1194      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1195        *not* regenerated since they are already out of date and I don't
1196        want to create the impression that they are suddenly working.
1197    o removed KAP stuff for DEC's
1198    o modified/added many .cvsignore files in */code and */input
1199    o added new expt "solid-body.cs-32x32x1"
1200      + this uses an alternative form of ini_curvilinear_grid.F which
1201        is not necessarily any better than the current one...
1202    
1203    checkpoint40pre4
1204    o added re-initialisations of utrans,vtrans,rtrans in
1205      calc_common_factors which are crucial for TAF.
1206    o extended iMin,jMin range for calc_common_factors,
1207      calc_diffusivity
1208    o added option ALLOW_PASSIVE_TRACER
1209    o a few minor updates and fixes
1210    
1211    checkpoint40pre3
1212    o created calc_gtr1.F for gad package
1213    o split the_main_loop and re-introduced forward_step
1214    o some recomputations of nIter0 for TAMC
1215    
1216    checkpoint40pre2
1217    o Updated to latest branch of AJA, JMC
1218    o Added gradient check package
1219    o Added routines for passive tracer handling
1220    o Added carbon sequestration sensitivity experiment
1221    
1222    checkpoint39
1223     o Modifications and fixes to support TAMC
1224       (mainly missing or wrong directives)
1225     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1226       in addummy_in_stepping
1227     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1228     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1229     o Included following packages:
1230       cal: calendar
1231       exf: external forcing
1232       ecco: essential routines to control use of cal, exf
1233             (NB: this is not the full ECCO environment)
1234     o disabled some packages by default in genmake
1235    
1236    checkpoint38
1237     o see notes_c37_adj.txt
1238     o corrected wrong layer index in external_forcing_t
1239     o replaced the_main_loop/forward_step by the_main_loop
1240     o removed forceoutput from write_state
1241       (replaced criteria for initial/final state)
1242     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1243    
1244    checkpoint37
1245     o mdsio.F routine split and packaged in pkg/mdsio
1246       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1247        used unless genmake -disable=mdsio)
1248     o allow a more precise surface-geopotential gradient for the atmosphere
1249       taking into account the change in space of Alpha (=1/rho) at the surface.
1250     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1251       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1252     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1253       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1254       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1255     o Time-Average diagnostics defined as a pseudo package "timeave".
1256     o pickup files : old pickup (before c35) did not work with new code (c35
1257       and after) unless activating 2 commented lines in initialise-varia.
1258     o Non-Hydrostatic pickup file Pb fixed.
1259     o bug with Rigid-lid version (since c35) fixed.  
1260    
1261    checkpoint36
1262     o implement Crank-Nickelson barotropic time-stepping
1263     o recover Time-Average diagnostics
1264     o fix Pb in checkpoint (PR#19)
1265     o AIM become a standard package ; clean unused CPP_kees
1266    
1267    checkpoint35
1268     o subtantial rewrite of dynamics.f
1269     o allows staggered time-stepping
1270     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1271     o added bottom drag (linear + quadratic)
1272    
1273    checkpoint34
1274     o Modified exchange routines for correct reverse simulation.
1275     o Added verification output to comply with bug fix in impldiff.F
1276       as of c33 (exp2, natl_box).
1277     o Corrected store directives in dynamics.F
1278     o Corrected array boundaries in impldiff.F
1279     o Corrected array dimensions in gmredi.
1280       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1281     o Added routine GLOBAL_SUM_INT to global_sum.F
1282     o Added mdsio_gl.F for ECCO purposes.
1283    
1284    checkpoint33
1285     o Fixed bug in lower BC in impldiff.F
1286     o Fixed confusion about units of forcing arrays in FFIELDS.h
1287       namely Fu,Fv,Qnet,Qsw,EmPmR:
1288       - Removed verification/natl_box/code/external_fields_scale.F
1289         (did not differ from that in model/src)
1290       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1291         (see FFIELDS.h for description)
1292       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1293         kpp_calc.F and kpp_transport_t.F
1294       - Removed model/src/external_fields_scale.F and calls to it
1295       - verification/natl_box uses flux data with "atmospheric" sign so
1296         a special version of external_fields_load.F is used to
1297         change the data as it's read in. This way, the arrays
1298         have the right units and signs at all times tha a user could
1299         possibly use them.
1300     o Corrected genmake to delete a temporary file during configuration
1301    
1302    checkpoint32
1303     o Scaling of forcing fields moved from external_forcing.F to
1304       external_fields_scale.F, called directly after loading fields.
1305     o Surface relaxation terms added to surface tendency fields in
1306       extra subroutine.
1307     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1308       fields.
1309     o Changes in GMRedi to comply with packaging structure.
1310     o Modifications and bug fixes in KPP package.
1311     o Verification experiment for KPP added (verification/nat_box/)
1312    
1313    checkpoint31
1314     o Packages interface brought in line with defined standard
1315       -> new routines packages_...F
1316       -> changes in initialise_fixed.F, initialise_varia.F
1317       -> enables initialisation interface for ECCO package
1318     o Rescaling of external forcing fields immediately after read
1319       (removed from external_forcing.F)
1320       -> new: surface_fields_scale.F
1321       -> affects ini_foorcing.F, external_fields_load.F
1322     o Computation of surface tendencies before tendency updates.
1323       -> new: external_forcing_surf.F
1324     o Change of variable names useGMRedi, useKPP, useECCO
1325     o Further changes in dynamics.F, impldiff.F for TAMC
1326     o Tested for experiments 0, 2, 4.
1327       - not yet tested for GMRedi.
1328       - not yet tested for KPP.
1329    
1330    checkpoint30
1331     o Updates for OBCs
1332     o New experiment for test OBCs (internal_wave)
1333     o New output.txt in verification/exp4/results/
1334     o Updates for KPP: calculation of viscosity corrected, new variables
1335       kpp_dumpFreq and kpp_taveFreq
1336     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1337       and entry for T90 in genmake
1338    
1339    checkpoint29
1340     o packaged KPP and GM/Redi
1341    
1342    checkpoint28
1343     o Corrected initialization of hFacMin for difference vertical coordinates
1344     o Modified calculation of partial cell thickness to more robust algorithm
1345     o config_summary.F: replaced write_1D_... by write_0D_...
1346       read_write.F: added subroutines write_0D_...
1347     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1348       included some initialisations required for TAMC.
1349     o routine calc_isoslopes: modified sqrt computation to make it
1350       differentiable for zero argument.
1351     o routines dynamics, impldiff:
1352       included store directives and tape key computations required for TAMC.
1353     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1354    
1355    checkpoint27
1356     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1357       formulation works properly with variable resolution.
1358     o restructured the calling tree between the_model_main() and dynamics()
1359     o split initialise() into initialise_fixed() and initialise_varia()
1360     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1361       in new routine ini_psurf()
1362    
1363    checkpoint26
1364     o moved some #ifdef in optional routines to encompass everything
1365       except the argument declarations. This was using up some memory.
1366     o fixed macros like _ADT to work with both versions of Linux cpp
1367     o cleaned up some unused and uninitialized variables
1368       (helps when debugging with strict compile options)
1369     o split up CPP_EEOPTIONS.h into options and macros
1370       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1371     o patch for 2 processor JAM mode
1372    
1373    checkpoint25
1374     o updates for OBCs and NH
1375     o dramatically reduced memory usage
1376     o added "JAM" routines for use on Artic network
1377     o parameterization of convection by implicit vertical diffusion
1378     o added a diagnostic of convective index
1379     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1380       (this is was partly for OBCs and NH but also in anticipation of
1381        an explicit free-surface option)
1382     o initial state input files for U and V
1383    
1384    checkpoint24
1385     o Removed some spurious "REAL"s
1386     o Updated KPP to latest version from JPL
1387     o Added a COS(latitude) in horizontal viscosity
1388    
1389    checkpoint23
1390     o Added del^4 diffusion for salt and temperature
1391     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1392    
1393    checkpoint22
1394     o Made many small changes: implicit none, format(i5), etc...
1395     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1396    
1397    checkpoint21
1398     o Introduced new I/O package that supports direct-access records (mdsio.F)
1399     o Split-up mid-level I/O routines
1400     o Updated input data for experiments 0,1,2,4 and 5
1401     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1402    
1403    checkpoint20
1404     o Tidied up open-boundaries some more
1405     o Added non-hydrostatic code
1406     o Fixed some input data
1407     o Modified MPI start-up to work in "coupled" context.
1408    
1409    checkpoint19
1410     o Tidied up directory structure for verification experiments.
1411     o Added new code for open boundaries.
1412     o Corrected advective terms near boundaries.
1413     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1414     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1415     o Split default parameters out of ini_parms.F into set_defaults.F.
1416    
1417    checkpoint18
1418     o Further changes for optional code generation with
1419       CPP - ugh!
1420    
1421    checkpoint17
1422     o Beginning to incorporating modularity
1423       for supporting atmos. and ocean configs.
1424     o Small changes for TAMC complinace
1425     o New ultra simple test case. Barotropic box
1426       configuration "exp0".
1427    
1428    checkpoint16
1429     o Minor changes to exchange routines to support
1430       accumulation in reverse mode. Adjoint of an
1431       assignment is an addition.
1432     o Changes to support compilation by TAMC (LR(1)
1433       syntax) and by g77 under Linux ( 72 character
1434       limit ).
1435    
1436    checkpoint15
1437     Rewrote exchange routines to allow
1438     o General tile <-> tile connectivity.
1439     o TAMC reverse mode flag ( is this really needed? )
1440     o Variable width overlap and exchange region widths.
1441     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1442       shmput/shmget, VIA, SYSV shmem and every other cool
1443       communication method.
1444    
1445  checkpoint14  checkpoint14
1446   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
1447   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.

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