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revision 1.16 by cnh, Tue Nov 3 15:31:08 1998 UTC revision 1.225 by jmc, Mon Dec 15 23:40:21 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    o check-in the first version of the coupler + interfaces for multi-components
21       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
22       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
23       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
24       - ocean and atmos. share the same horizontal grid (no interpolation).
25       - exchanges between component and coupler is done in forward_step
26    o new verification experiment, cpl_aim+ocn:
27       coupled ocean - AIM atmosphere on cs32 grid.
28    
29    checkpoint52d_pre
30    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
31    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
32    
33    checkpoint52c_post
34    o Fixing OPTIONS files for use of exf:
35      - ALLOW_ECCO not needed
36      - ECCO_CPPOPTIONS.h should not be included from
37        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
38        as has been the case in the past
39      - All cal/exf related options are currently set in
40        single header file. Should remain so until we
41        agree on a consistent new policy.
42    o Removed all CPP options for cal package.
43      cal has no more CPP options.
44    o modified STOREs in GAD_ADVECTION
45    o corrected key comp. for passkey
46    
47    checkpoint52b_post
48    o new version: "thsice" of thermodynamic sea-ice pkg:
49     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
50     - modify fluxes but do not change theta directly;
51     - light cleaning of bulk_force pkg (still needed with thsice).
52     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
53       + output_thsice.txt to test thsice & bulk_force pkgs.
54    o put back grid & coriolis monitor output.
55    checkpoint52b_pre
56    
57    o call "do_the_model_io" at the beginning (=> dump initial state)
58    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
59    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
60      (need info on NUMBER_OF_PTRACERS)
61    o missing PTRACERS headers in some routines
62    o default tamc.h in pkg/autodiff supposed to crash
63      to ensure proper customization
64    
65    checkpoint52a_post
66    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
67      - moved surfaceTendencyTice from pkg/seaice to main code
68      - subroutine FREEZE_SURFACE now limits only surface temperature
69        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
70        => new output.txt for global_ocean.cs32x15 & global_with_exf
71      - keep the old version of FREEZE for backward compatibility;
72        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
73      - corresponding modifs for TAF directives
74    o added surface flux output variables to TIMEAVE_STATVARS
75    o time-averaged output for pkg/ptracers
76    o fix problem with ECCO-related divided adjoint
77      snapshot file was missing some ad-variables,
78      but no warning issued by TAF
79    
80    checkpoint52a_pre
81    o some bug fixes for #undef REAL4_IS_SLOW
82    
83    checkpoint52 = ecco_c52_e35
84    o after testing adjoints of checkpoint51u_post
85    
86    checkpoint51u_post
87    o this is the post-merge tag of the ecco-branch
88      (needs another clean checkout and re-testing)
89    o various natl_box_adjoint configs and results
90      but no input fields
91    o obcs adjoint not yet merged!
92    o adding ECCO global 1x1 and 2x2 degree configs
93    o updated/extended some store directives for seaice
94    o pkg/ecco now containes ecco-specific part of cost function
95    o top level routines the_main_loop, forward_step
96      supersede those in model/src/
97      previous input data.cost now in data.ecco
98      (new namelist ecco_cost_nml)
99    o in ctrl/ cleaned some cross-dependencies and updated CPP options
100    
101    checkpoint51t_post
102    o this is the pre-merge tag of the ecco-branch
103    
104    checkpoint51s_post
105    o cleanup: removed various obsolete #define-s
106    o pkg/grdchk
107      - renamed 'ph-grd 3' to 'grad-res'
108      - merged from ecco-branch
109        (remaining bug fixes for obcs gradient checks)
110      - additional high-precision output for testreport
111        (grep for 'precision_grdchk_result')
112    
113    checkpoint51r_post
114    o cleaned up or removed CPP_OPTIONS.h files
115    o updated results for some of the tests to reflect the new
116      optfiles (-ieee: -O0 instead of -O3)
117    
118    checkpoint51q_post
119    o cd_code:
120      - moved cd_scheme.F -> cd_code_scheme.F
121      - separate read_checkpoint from cd_code_ini_vars.F
122      - separated cd_code part from write_checkpoint
123      - updated AD_SOURCE, generated .flow
124      - added CD_CODE_VARS.h to the_main_loop
125      - Moving cd_code specific store dir.s to pkg/cd_code
126    o ctrl package totally restructured
127      - pack/unpack now optional and decoupled from
128        xx_/adxx_ I/O
129      - ctrl_pack/unpack cleaned
130        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
131      - confined inclusion of AD_CONFIG.h to where necessary.
132    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
133    
134    checkpoint51p_post
135    o create initial cd_code package
136      - WARNING: the initialization of fields within packages
137        is broken because INI_FIELDS (where READ_CHECKPOINT is
138        called) is called *before* PACKAGES_INIT_VARIABLES.
139        This seems to be backwards since
140        1) its important to initially zero the entire field including
141           the "halo" region
142        2) zeroing needs to be done *before* reading pickup info
143           and the pickup call might or might not happen in any
144           particular run
145      - this needs an overhaul for R2
146    o cleanup verification/*/code/GMREDI_OPTIONS.h
147    o cleanup testreport
148    
149    checkpoint51o_post
150    o bringing AD-related verif's up to date with genmake2
151      - carbon/
152      - global_ocean.90x40x15/
153      - hs.94.1x64x5/
154      - (front_relax/ )
155    o (more) consistent directory structure for AD-related verif.'s
156    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
157    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
158    o bug fix in find_alpha.F for MDJWF:
159      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
160        change rho -> rho-rhoConst
161      - replace call find_rho to find_rhonum
162    o initialisation of rFlx extended to full array (required by TAF)
163      and shifted to thermodynamics
164    o removed PTRACERS.h in ptracers routine
165    o added surfacetendencyPtr to S/R parameter list pracers_forcing
166    o Correcting initialisations for fVerU, fVerV.
167    o helping TAF to recognize dependency on kUp for
168      fVerU, fVerV
169    o Replacing delZ by delR in pkg/ctrl/
170    checkpoint51o_pre
171    
172    o undid all of cp51 pending some cleanups and discussion
173    o added the [#include "AD_CONFIG.h"] statement to all files that need
174       it for adjoint/tl #defines
175     o re-worked the build logic in genmake2 to support AD_CONFIG.h
176     o removed tools/genmake since it no longer works
177    
178    checkpoint51n_post
179    o modifications to make FREEZE flux visible to pkg/kpp
180      - moved surfaceTendencyTice from pkg/seaice to main code
181      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
182      - subroutine FREEZE now limits only surface temperature
183        (this means new output.txt for global_ocean.90x40x15,
184         global_ocean.cs32x15, and global_with_exf)
185    o added surface flux output variables to TIMEAVE_STATVARS
186    
187    checkpoint51n_pre
188    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
189    o added [#include "AD_CONFIG.h"] to all files that use the following
190      defines:
191      - ALLOW_ADJOINT_RUN
192      - ALLOW_TANGENTLINEAR_RUN
193      - ALLOW_ECCO_OPTIMIZATION
194    
195    checkpoint51m_post
196    o incorporating changes to get TAMC/TAF working in genmake2
197      - added new TAMC/TAF targets to the Makefile
198      - various cleanups related to package handling
199      - these changes should have no impact on the forward model
200    
201    checkpoint51l_post
202    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
203     - faster algorithm for cal_addtime.F
204     - higher precision arithmetic, where needed
205     - pkg/exf *startdate variables changed from calendar date to
206       model integration time
207    
208    checkpoint51l_pre
209    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
210    o enable to apply restoring on S & T only in a latitude band.
211    o update output (external_forcing_surf modif. change truncation errors)
212       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
213    
214    checkpoint51k_post
215    o change default to: useNHMTerms=.FALSE.
216     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
217       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
218     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
219        exp1, ideal_2D_oce
220     - change data file of oceanic exp (leave the results unchanged for now)
221       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
222    o set gravitySign automatically according to the vertical coordinate used
223      (and change sign: back to "logical" value: +1 when R increases downward)
224    o added an include barrier to the default CPP_OPTIONS.h and
225      removed the #include "PACKAGES_CONFIG.h" from it
226    o fix a bug in mom_fluxform (from chk51j_post)
227    
228    checkpoint51j_post
229    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
230    o adjusted some flow directives (dynamics, thermodynamics)
231    o added cubed-sphere case to test cost function
232    o heckpoint_lev?_directives.h now include
233      pkg-specific directives, whenever those are enabled.
234    o Moving pkg-specific flow directives to corresponding pkg
235      Moving pkg-specific differentiation list to corresponding pkg
236      Moving pkg-specific checkpoint-lev storing to corresponding pkg
237      ---> conventions are
238           - pkg_ad.flow
239           - pkg_ad_diff.list
240           - pkg_ad_check_lev?_dir.h
241    
242    checkpoint51i_post
243    o merge of the branch-genmake2
244      - knowingly breaks the older genmake
245      - automatic generation of all ALLOW_${PKG_NAME} defines
246      - new testreport supersedes older testscript
247    o large number of package inclusion and header cleanups
248    checkpoint51i_pre
249    
250    o new output for adjoin of global ocean vector invariant
251    o fix for checkpoint of thermodynamic seaice and bulk_force
252    o Steph gchem various cleanups
253    
254    checkpoint 51h_pre
255    o fixed some single quotes
256    o modify gchem pkg to be more versatile
257    o modifications to clean up dic pkg
258    o add pkg/cfc
259    
260    checkpoint51g_post
261    o provide links for ARPACK and ADM*TLM
262    o start removing verification/vero/
263    o update AD-related stuff
264      (in particular some IF-statements in model/src/ routines)
265    o adding to verification/global_ocean.90x40x15/ adjoint of
266      vector invariant setup
267    
268    checkpoint51f_post
269    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
270    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
271      of tracer Green's fucntions for ocean inversion project.
272    
273    checkpoint51f_pre
274    o Added on-the-fly spatial interpolation capability
275        "USE_EXF_INTERPOLATION" to pkg/exf.
276      - This is a temporary Cartesian-grid hack until
277        the super-duper ESMF coupler becomes available.
278      - See verification/global_with_exf/README for usage example.
279      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
280        flags and modified pkg/seaice accordingly.
281    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
282        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
283        non-local transport term.
284    
285    checkpoint51e_post
286    o pkg/mom_vecinv:
287      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
288      - add time-ave diagnostic of vorticity advection.
289    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
290    o atmospheric geopotential: - include water vapor effect;
291                                - use p^kappa in p* scaling.
292    o land pkg: read initial state from files.
293    o AIM : add stratospheric drag in the upper level
294    
295    checkpoint51d_post
296    o change function ILNBLNK (=> last non-blank char.) to return zero
297      (instead of the string length) when the string. char is empty
298    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
299    o modif's to restore TAMC compatibility
300      - avoid "_d" constructs in PARAMETER declarations
301      - avoid interrupting lines by comment lines
302    o Use cluster local disks for purely local I/O
303      vs. globally visible disks needed for ctrl stuff
304      (merged from ecco-branch)
305      - new active_file_loc... and mdsio_..._loc routines
306      - affected packages: autodiff, ctrl, grdchk, mdsio
307    
308    checkpoint51c_post
309    o introducing integer flag debugLevel
310      - debLevZero: suppress all output
311      - debLevA: standard
312      - debLevB: equivalent to current debugMode=.TRUE.
313    o introducing pathname variable mdsioLocalDir for mdsio
314      that can be specified at runtime
315      (relevant for cluster I/O to local disk)
316    `
317    >>>checkpoint51b_post
318    adjoint of ptracers
319    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
320    o extended state in checkpoint_lev?, etc.
321    o alternative ctrl/cost with tr1 or ptracer
322    o new comlev1_bibj_ptracers
323    o new ptracers.flow
324    o made ptracers_forcing same as external_forcing_s
325    o added verification for adjoint with ptracers
326      - adm. grdchk fail so far
327      - tlm. grdchk OK
328      - checked tapelev/comlev recomputations: OK
329    <<<checkpoint51b_pre
330    
331    checkpoint51a_post
332    o added code for biogeochemistry package
333      - new pkgs: dic, gchem
334      - new subroutine in ptracers
335    o modify code for biogeo packages
336      - in model/src and pkg/ptracers
337    
338    checkpoint51
339    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
340      - autodiff, ctrl, exf, grdchk, seaice
341      kept separate packages
342      - cost, ecco, obcs
343    o updating verification/internal_wave, verification/lab_sea
344      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
345    
346    checkpoint50i_post
347    o Preparing next differentiable checkpoint and sync
348      of MAIN vs. ecco-branch
349      - 1st step: this one is differentiable
350      - 2nd step: next(! not this) checkpoint will have updated packages
351                  from ecco-branch)
352    
353    checkpoint50h_post
354    o new package "land": provide surface BC for AIM.
355    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
356    o AIM: use true log-P extrapolation for near surface temp (= as in
357        F.Molteni paper) ; update aim.5l_cs output.
358    o New variable in PARM03 for more flexible pickups
359    o somewhat cleaned package initialisation sequence for
360      ctrl/ cost/ ecco/ in packages_... routines
361    
362    checkpoint50g_post
363    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
364      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
365      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
366        made the default because of faster convergence than ADI
367    
368    checkpoint50f_post
369    o exf totally restructured
370      - replaced all exf_set_ routines by one generic exf_set_gen.F
371        and made sure it's still differentiable
372      - split exf_getffields.F into new exf_bulkformulae.F
373      - exf_inscal_/exf_outscal_ suffixes consistent with field names
374      - updated adjoint/makefile and relevant verif. accordingly
375    
376    checkpoint50f_pre
377     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
378          + change Evap over land. (update aim.5l_cs output)
379     o added missing .cvsignores and made uniform across expts
380     o changed configuration of tidal_basin_2d expt
381     o added pkg/debug functions for tracing code in fatal crashes
382     o tidied pkg/monitor to use MONITOR_OPTIONS.h
383     o new fn in pkg/monitor to stop model if solution grows too big
384     o removed lots of single quotes from comments
385    
386    checkpoint50e_post
387    o make KPP work with PTRACERS
388     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
389       nearly a copy of kpp_transport_s
390     - there is no analogue to SurfaceTendencyS, so I have to use
391       gPtr(of the surface layer) instead
392    o add a new platform SunFire+mpi (SunFire 15000) to genmake
393    checkpoint50e_pre
394    
395    checkpoint50d_post
396    o change kpp output from multiple-record state files to single-record state
397      files analogous to write_state.F
398    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
399      analogous to the cg2d-related output.
400    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
401      so that writing to internal file fn (with length 512) fails.
402    checkpoint50d_pre
403    
404    checkpoint50c_post
405    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
406    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
407    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
408    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
409    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
410    
411    checkpoint50c_pre
412    Merging from release1_p13:
413    o bug fix for pkg/seaice dynamic solver
414    o Added SEAICE_initialHEFF to pkg/seaice
415    
416    checkpoint50b_post
417    o store u*,v* in gU,V instead of in guNm1,gvNm1
418    o in order to put the momForcing out of the Adams-Bashforth:
419      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
420      to timestep.F
421    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
422    o re-generate output for highly sensitive test-exp:
423       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
424    
425    checkpoint50b_pre
426    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
427    o corrected CPP option mismatch in exf_Bulk... functions for case
428      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
429    
430    checkpoint50a_post
431    o Bug fix for merging between c50 and KPP.
432      ikey was passed from thermodynamics to kpp_calc via
433      common block rather than being recomputed in kpp_calc,
434      in contradiction with new key itdkey.
435      New key ikppkey created, and tamc.h headers updated.
436    
437    checkpoint50
438    - 2nd step of merge with ecco-branch:
439      merge changes in ecco-branch back into main trunk
440    - bug fix in find_alpha
441    - more storing in gmredi_calc_tensor.F, kpp_routines.F
442    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
443    - merged some sliced AD support routines
444    
445    checkpoint49
446    merged from ecco-branch:
447    o exf:
448      - Enable initialisation of forcing fields to constant
449        (runtime) values.
450      - in exf_getffields.F
451        Reduce i-/j-loop to interior domain, discarding overlaps.
452        That also fixes wrong TAF-key computations for key_1, key_2
453        with bulf formulae.
454      - exf_init.F modify #ifdef for exf_init_evap
455      - exf_getffieldrec.F, ctrl_getrec.F
456        The following INT-usages are not safe:
457          fldsecs  = int(fldsecs/fldperiod)*fldperiod
458          fldcount = int(fldsecs/fldperiod) + 1
459        and were modified.
460    o autodiff: checkpoint_lev...
461      - updated storing for bulk formulae (some arrays were missing)
462      - added state for seaice package
463      - synchronized with main branch
464    o DIVA:
465      Modif.s in
466      - the_main_loop.F
467      - the_model_main.F
468      and added cost_final_restore.F cost_final_store.F
469      o With these changes, it is possible to fully separate
470        the first forward run to compute the cost function (mdthe_main_loop)
471        and adjoint runs over individual DIVA intervals (adthe_main_loop)
472        into separate model executions.
473        This enables better tuning of DIVA to given queue sizes.
474      o Loss of cost function value in consecutive DIVA runs is
475        fixed by storing to 'costfinal' file.
476      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
477        beginning/end of adjoint integration is accounted for.
478      The current changes apply to TAF-1.4.26.
479      TAF has one remaining bug, requiring one manual change
480      (see MITgcm manual).
481    o cal: synchronized between MAIN and ecco-branch
482    
483    checkpoint48i_post
484    o Changes to restore differentiability of code w.r.t. previous tag
485      (mostly adding new routines to make list and replacing
486      pressure by totPhiHyd).
487    o Updated and merged grdchk package
488      - has both ADM and TLM checks
489      - works for single- and multi-proc.
490      - output cleaned
491      - worked successfully for parallel DIVA
492    o genmake:
493      - Adding -platform=SP4
494      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
495    o Modif. for DIVA:
496      ctrl_unpack should not be called in intermediate DIVA interval.
497      (similar thing would apply for active files such as
498      tbar, sbar, psbar, which should not be reinitialised;
499      only relevant for ecco-branch)
500    
501    checkpoint48h_post
502    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
503    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
504    o Added SEAICE_initialHEFF to pkg/seaice
505    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
506    
507    checkpoint48g_post
508    --- EOS:
509    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
510      store total Potential in totPhyHyd for diagnostics & EOS.
511    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
512    --- Pressure/geopotential gradient:
513    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
514    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
515      ( changes results of global_ocean_pressure )
516    o NLFS + z-coord.: add eta*Rho' contribution.
517    o accurate phiHyd when using interface-W at the middle between 2 centers
518     ( changes results of ideal_2D_oce )
519    o includes r* 2nd term in potential gradient.
520    
521    checkpoint48f_post
522    Merging from release1_p12:
523    o Modifications for using pkg/exf with pkg/seaice
524      - improved description of the various forcing configurations
525      - added basic radiation bulk formulae to pkg/exf
526      - units/sign fix for evap computation in exf_getffields.F
527      - updated verification/global_with_exf/results/output.txt
528    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
529      (SBO) core products, including oceanic mass, center-of-mass,
530      angular, and bottom pressure (see pkg/sbo/README.sbo).
531    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
532      to avoid negative values in shallow regions.
533      - updated verification/natl_box/results/output.txt
534      - updated verification/lab_sea/results/output.txt
535    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
536    o Added useSingleCpuIO option (see PARAMS.h).
537    o Updated useSingleCpuIO option in mdsio_writefield.F to
538      work with multi-field files, e.g., for single-file pickup.
539    o pkg/seaice:
540      - bug fix in growth.F: QNET for no shortwave case
541      - added HeffFile for specifying initial sea-ice thickness
542      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
543    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
544      kpp_transport_t.F, forward_step.F, and the_main_loop.F
545    o pkg/seaice:
546      - adjoint-friendly modifications
547      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
548    
549    checkpoint48e_post
550    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
551    o dynamics: change definition of computational domain & adapt mom_fluxform
552      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
553    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
554        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
555        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
556        global_ocean.90x40x15 global_with_exf global_ocean_pressure
557        inverted_barometer solid-body.cs-32x32x1
558      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
559    
560    checkpoint48d_post
561    o in preparation for r*:
562     a) use pre-computed gradient of hydrostatic potential:
563        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
564     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
565        => affects results of glob_oce_pressure (different truncation error)  
566      update output.txt of ideal_2D_oce & global_ocean_pressure
567    
568    checkpoint48d_pre
569    o in preparation for r*:
570      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
571      pass the 2 comp. of the grad. as arguments to momentum S/R.
572      but for the moment, only used if it does not change the results.
573    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
574    
575    checkpoint48c_post
576    Modifications in treatment of initial flux forcing controls
577    to avoid extra storing of flux fields.
578    
579    checkpoint48c_pre
580    o Added tidal_basin_2d experiment (currently 1D!)
581    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
582    
583    checkpoint48b_post
584    o r* coordinate added in #ifdef NONLIN_FRSURF block.
585     (modification to pressure gradient not yet implemented)
586    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
587      (for U & V) that are used for vertical advection of momentum.
588    
589    checkpoint48a_post
590    o In preparation for r*, use temp. array to compute vertical transport
591       in flux-form momentum pkg. => change results of few test-exp.
592      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
593                        lab_sea, natl_box & plume_on_slope
594    
595    checkpoint48
596    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
597    
598    checkpoint47j_post
599    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
600    o moved adexch from forward_step to addummy_in_stepping
601    o added exch in ctrl_map_...
602    o aveFreq.=0. at end of cost_final to avoid overwrite in
603      reverse checkpointing loop
604    o Yet more changes in gmredi:
605      * adgmredi_calc_tensor
606        avoiding all recomputation of gmredi_slope_limit
607      * adgmredi_x/y/rtransport
608        added flag for excessive storing to avoid recomp. of
609        u/v/rtans, dTdx/y/z
610        -> this is not really necessary and very memory-consuming
611      * adgmredi_slope_psi:
612        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
613      * gmredi_slope_limit
614        re-activated full calculation of taperfct for case 'ac02'
615    o updating verification/ adjoints of carbon, global_ocean.90x40x15
616    
617    checkpoint47i_post
618    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
619    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
620      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
621    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
622    o gmredi: fix few bugs.
623    
624    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
625    This will be a good checkpoint to plug into the ecco-branch.
626    o few modif.'s to get latest version adjointed
627      (mainly kick out code in ini_linear_phisurf)
628    o modif's to run adjoint with exactConserv
629    o case GM_BOLUS_ADVEC should be cleaned
630      S/R gmredi_slope_psi should be cleaned
631    o verification/carbon now has exactConserv=.TRUE.
632    
633    checkpoint47g_post
634    o time-average AIM output: becomes independent from statvars time-average
635      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
636    o After TAF bug fix:
637      Tested adjoint of gmredi package.
638      Tests were done with checkpoint47 rather than with latest
639      checkpoint47f_post since the latter is broken for the adjoint
640      verification/carbon/ contains both ADM and TLM gradient checks.
641    Here they are, before they get changed/lost/stolen.
642    Mostly modif.'s to fix numerical sensitivities.
643    Gradient checks OK for
644    - GM_taper_scheme:
645      * clipping
646      * ac02
647      * linear
648      * glw91
649      * dm95
650      * ldd97
651    - GMREDI_OPTIONS:
652      * GM_VISBECK_VARIABLE_K
653      * GM_NON_UNITY_DIAGONAL
654      * GM_EXTRA_DIAGONAL
655      * GM_BOLUS_ADVEC
656    in conjunction with data.gmredi parameters to be checked in
657    in a few minutes under verification/carbon/code/
658    
659    checkpoint47f_post
660    Merging from release1_p10:
661    o modifications for using pkg/exf with pkg/seaice
662      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
663        and SEAICE_EXTERNAL_FLUXES
664      - pkg/exf CPP options EXF_READ_EVAP and
665        EXF_NO_BULK_COMPUTATIONS
666      - usage examples are Experiments 8 and 9 in
667        verification/lab_sea/README
668      - verification/lab_sea default experiment now uses
669        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
670    
671    checkpoint47e_post
672    o created a tag prior to creating a branch
673    
674    checkpoint47d_post
675    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
676      at the bottom boundary had an erroneous half slip boundary condition
677    o added bottom drag and no slip boundary condition capabilities to
678      oceanic pressure coordinates code
679    o added new verification experiment global_ocean_pressure, this experiment is
680      also described in the tutorial section of the manual
681    checkpoint47d_pre
682    
683    checkpoint47c_post
684    o Added a verification experiment for a global cubed-sphere ocean run
685      -  verification/global_ocean.cubed32x32x30
686      -  uses pkg/therm_seaice and pkg/bulk_forcing
687    
688    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
689    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
690      when using P-coordinate; only implemented for atmospheric config.
691    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
692      NOTES: requires option NONLIN_FRSURF to be "#define".
693    o update advect_xz/results/output.txt (left from checkpoint44g_post)
694    
695    checkpoint47b_post
696    Merging from release1_p9:
697    o pkg/seaice
698      - removed GOTO's and added taf directives
699      - double precision constants to reduce the g77 (Linux)
700        to F77 (SGI) differences reported in release1_p8
701    o tools/genmake
702      - added SGI options
703    o verification/testscript
704      - updated to that of checkpoint47a_post
705    o verification/global_ocean.90x40x15/input/eedata
706      - modified for SGI f77 compatibility
707    o verification/lab_sea
708      - added description of sea-ice model
709      - added missing matlab routines
710      - added test of thermodynamics parallelization
711    
712    checkpoint47a_post
713    o new pkg: aim_v23
714     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
715       for now, keep the same surface forcing as before.
716     - Part-Cell implemented into AIM; check that Heat & Water are conserved
717     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
718     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
719    o add diagnostic of surface correction term in monitor output
720    
721    o bulk_force and therm_seaice
722    - Two packages:  bulk_force (Bulk forcing)
723      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
724    - Earlier integration from Stephaine Dutkiewicz
725      and Patrick Heimbach.
726    - Two ifdef statements for compile time,
727       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
728    
729    checkpoint47
730    differentiable version of checkpoint46n_post
731    o bug fix in quasihydrostaticterms
732    o * "clean" adjoint code (in terms of extensive recomputations)
733        can now be obtained for all GMREDI options (i.e. for
734        - GM_VISBECK_VARIABLE_K
735        - GM_NON_UNITY_DIAGONAL
736        - GM_EXTRA_DIAGONAL
737        - GM_BOLUS_ADVEC )
738      * However, wrong gradient check problem remains unsolved.
739      * New CPP options have been introduced for different
740        tapering schemes
741    o external_fields_load now part of differentiation list
742    o pressure needs multiple storing;
743      would be nice to have store_pressure at beginning or
744      end of forward_step, e.g. by having phiHyd global (5-dim.)
745      (NB: pressure is needed for certain cases in find_rho,
746      which is also invoked through convective_adjustment).
747    o recomputations in find_rho for cases
748     'JMD95'/'UNESCO' or 'MDJWF' are OK.
749    o #define ATMOSPHERIC_LOADING should be differentiable
750    o ini_forcing shifted to begining of initialise_varia
751    o Incorporating QNVS line search routines into MITgcm
752      (this is separate code, and therefore not under pkg)
753      lsopt/, optim/
754    o Updated verification/carbon/
755      - #define GM_VISBECK_VARIABLE_K
756      - GM_taper_scheme    = 'ldd97'    
757    
758    checkpoint46n_post
759    Merging from release1_p8:
760    o verification/natl_box:
761      updating new external_fields_load routine
762    o New package: pkg/seaice
763      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
764      The sea-ice code is based on Hibler (1979-1980).
765      Two sea-ice dynamic solvers, ADI and LSR, are included.
766      In addition to computing prognostic sea-ice variables and diagnosing
767      the forcing/external data fields that drive the ocean model,
768      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
769      The implied surface heat flux is then stored in variable
770      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
771      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
772      non-local transport term.  Because this call precedes model
773      thermodynamics, temperature under sea-ice may not be "exactly" at
774      the freezing point by the time theta is dumped or time-averaged.
775      N.B.: fairly large differences in accuracy occur across
776            different platforms/compilers; comparison between
777            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
778            generated output gives:
779       T           S           U           V
780      C D M    c        m  s        m  s        m  s        m  s
781      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
782      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
783      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
784    
785      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
786    o GAD:
787      - generated new common blocks to account for call of
788        same gad routines with differing traceridentities
789        (needed to modify tracerIdentity indices in GAD.h)
790      - generated separate common blocks for case useCubedSphereExchange
791        (Department of Futurology)
792      - parameter lists to gmredi_?transport: added tracerIdentity
793      - added new key indices to tamc.h
794    o external_fields_load:
795      - added this routine to TAF list
796      - needed to make some common blocks global and additional storing
797        along the same lines as exf package (checkpoint_lev?_directives.h)
798    o exf:
799      updated external forcing package
800      - bug fixes carried over from ecco-branch
801        (missing OBCS_OPTIONS.h in two routines)
802      - enable easy to use "no forcing".
803      - added exf I/O for atmospheric loading
804      - added exf I/O for runoff data
805      - transfered scaling between exf <-> MITgcm to exf namelist
806    o Adding new verification experiment global_with_exf.
807      This verification experiment is almost identical to the
808      global_ocean.90x40x15 experiment, except that it uses
809      the exf (and cal) package instead of the
810      external_fields_load routine (cf README file).
811    
812    checkpoint46m_post
813    o modified testscript to return -- when there are no lines of "%MON" output
814    o added new flag "quasiHydrostatic" for QH mode
815      and new routine quasihydrostaticterms()
816    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
817      New routine: mom_u_coriolis_nh()
818    o fixed sign of non-hydrostatic metric terms in u and v equations.
819      Depend on correct sign of gravitySign.
820    o added work.pc* to .cvsignore in aim directories using ifc
821    o introduced flag for controllin non-hydrostatic metric terms
822    o removed gravitySign from PARM04
823    o switched to g77/ifc from pgf77 in aim experiments
824    
825    checkpoint46l_post
826    o made convective adjustment work with pressure coordinates:
827     - changed the direction of k-loop in convective_adjustment.F for the
828       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
829     - adjusted the reference pressure k-index in convective_adjustment.F
830     - adjusted the convection condition in convect.F (in analogy to
831       calc_ivdc.F)
832     - convective_adjustment no longer computes anything on the halos
833     - removed the warnings about negative salinity from find_rho.F and
834       find_alpha.F; instead the new routine look_for_neg_salinity, called
835       at the beginning of find_rho, find_alpha, and find_beta, does a
836       check of the entire slice, if CPP-option
837       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
838    checkpoint46l_pre
839    
840    checkpoint46k_post
841    o fixed the verification/global_ocean.90x40x15 experiment:
842     - new bathymetry (the world according to A., JMC, and M.)
843     - new initial fields and forcing fields (*.bin files)
844     - new POLY3.COEFFS (for the next release one should switch to a full
845       equation of state: JMD95P or MDJWF)
846     - fixed several errors and redundancies in the data file
847     - experiment uses looped cells
848     - added matlab directory with diagnostic scripts for plotting of output
849    
850    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
851     - read AIM physics parameters from a file (data.aimphys)
852     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
853    
854    checkpoint46j_post
855    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
856    o move wVel computation at the end of the time step, in S/R integr_continuity
857    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
858    o update timeave pkg for wVel diagnostic.
859    checkpoint46j_pre
860    
861    checkpoint46i_post
862    o Clean up AIM package (and keep the results unchanged):
863      include CPP_OPTION and use IMPLICT NONE in all routines ;
864      declare all the variables _RL ; use _d 0 for all numerical constants.
865      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
866    
867    checkpoint46h_post
868    o cleaned up the use of rhoNil and rhoConst.
869      - rhoNil should only appear in the LINEAR equation of state, everywhere
870        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
871        and the dynamical equations are all divided by rhoConst
872    o introduced new parameter rhoConstFresh, a reference density of fresh
873      water, to remove the fresh water flux's dependence on rhoNil. The default
874      value is 999.8 kg/m^3
875    o cleanup up external_forcing.F and external_forcing_surf.F
876      - can now be used by both OCEANIC and OCEANICP
877    checkpoint46h_pre
878    
879     Added code to convert surface volume flux (fresh water) into
880     a mass flux when using P coordinates in the ocean (OCEANICP).
881     Note: It assumes you have set rho0=rhoConst=density of fresh water.
882    
883    checkpoint46g_post
884    o Include a new diagnostic variable phiHydLow for the ocean model
885      - in z-coordinates, it is the bottom pressure anomaly
886      - in p-coordinates, it is the sea surface elevation
887      - in both cases, these variable have global drift, reflecting the mass
888        drift in z-coordinates and the volume drift in p-coordinates
889      - included time averaging for phiHydLow, be aware of the drift!
890    o depth-dependent computation of Bo_surf for pressure coordinates
891      in the ocean (buoyancyRelation='OCEANICP')
892      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
893        Theta, Salinity, and Pressure in the parameter list. This routine is
894        presently contained in find_rho.F. This routine does not give the
895        correct density for 'POLY3', which would be a z-dependent reference
896        density.
897    o cleaned up find_rho
898      - removed obsolete 'eqn' from the parameter list.
899    o added two new verification experiments: gop and goz
900      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
901    checkpoint46g_pre
902    
903    checkpoint46f_post
904    o Enable tangent linear (forward mode) gradient checks:
905      - extended active file handling to g_... files
906      - added TANGENT_SIMULATION to theSimulationMode
907      - extended grdchk package accordingly
908    o added tangent linear setup in verification/carbon/code_ftl
909    o added adjoint setup in verification/front_relax/code_ad
910    
911    checkpoint46e_post
912    o Added new equation of state -> MDJWF
913      - EOS of McDougall et al., 2002, JAOT, submitted
914      - caveat: the equation of state is only valid for a smaller (more
915        realistic?) range of values than JMD95P/Z and UNESCO
916      - added masks to the calculation of pressure in store_pressure
917      - added more check values for density in check_eos (ini_eos.F), some of
918        the old check values are out of the range of the MDJWF-eos, so don't
919        expect perfect matches for those
920    checkpoint46e_pre
921    
922    checkpoint46d_post
923    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
924      'OCEANICP', also initialised field pressure correctly in ini_eos in the
925      case of pressure coordinates. eosType='JMD95Z' in
926      combination with buoyancyRelation='OCEANICP' now causes an error.
927    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
928      in find_alpha/beta.
929    checkpoint46d_pre
930    
931    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
932      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
933    
934    checkpoint46c_post
935    o Changes necessary for ocean in p-coordinates
936     -  Added new buoyancy relation = 'OCEANICP'
937     -  Added new parameters = gravitySign (this used to be contained inside
938        the factor dRdZ which I added when we first switched to R coordinates).
939     X GM/Redi is not compatible (yet)
940     X bottom drag and no-slip need to be debugged.
941    checkpoint46c_pre
942    
943    checkpoint46b_post
944    o Added new equation of state -> JMD95Z and JMD95P
945      - EOS of Jackett and McDougall, 1995, JAOT
946      - moved all EOS parameters into EOS.h
947      - new routines ini_eos.F, store_pressure.F
948    o Added UNESCO EOS, but not recommended because it requires
949      in-situ temperature (see JMD95)
950    o Modified formatting for knudsen2.f in utils/knudsen2 and added
951      unesco.f to be used with POLY3
952    checkpoint46b_pre
953    
954    checkpoint46a_post
955    o Added (atmospheric) pressure loading
956      - new field in FFIELDS.h, etc...
957      - new cpp flag ATMOSPHERIC_LOADING
958    o Changed hFacC to _hFacC in calc_phi_hyd.F
959    o Added SHORTWAVE_HEATING to some files for consistency
960    checkpoint46a_pre
961    
962    checkpoint46
963    further merges from release1_p5
964    o new ctrl package
965      - adopted from ECCO environment to enable optimization
966      - added Eliassen Palm fluxes to controls
967    o added Eliassen Palm flux controls to gradient check package
968    o cost package
969      - Compatible with new ctrl package
970      - added Eliassen Palm cost hooks
971      - modif's of existing cost functions
972    o Adjoint-related bug fixes in kpp:
973      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
974      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
975    o autodiff package
976      - flow directives:
977        + new for S/R do_the_model_io
978        + enhanced for S/R checkpoint
979        + new gmredi.flow
980      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
981        disable adcommon.h/g_common.h by default.
982      - fixed problem for adjoint of global_max
983    o modified verification/carbon/
984    o New setup for adjoint of global_ocean
985    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
986    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
987    o incorporated hooks for sponge layer code (external_forcing.F)
988    
989    checkpoint45d_post
990    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
991    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
992      (affects plume_on_slope "cg2d" output)
993    o add new parameter deltaTfreesurf for free-surface time stepping
994    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
995    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
996    o change phiMin in exp1 (to agree with documentation)
997    o add new flags:
998     - T,S forcing inside/outside Adams-Bashforth
999     - turn off temp,salt advection and/or forcing
1000     - for each tracer, define internal flag for multiDimAdvection & A-B
1001    o monitor: change definition of KE to check conservation of Energy
1002    
1003    checkpoint45c_post
1004    o Removed f90 comments ("!")
1005    o Modified initialisations to enable exf package for MITgcm
1006      (without invoking ECCO_PACKAGE).
1007    o modifications to gradient check package (Martin Losch)
1008      - enable centered differences
1009      - modified format of standard output
1010    
1011    checkpoint45b_post
1012    o cleaned exchange calls in cg2d
1013    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1014    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1015      to configure barotropic setup (Martin Losch)
1016    o moved some initialisations within bi,bj loop in dynamics
1017      (TAF flow dependency)
1018    o in initialise_varia, moved call packages_init_variables
1019      before convective_adjustment_init
1020      (corresponding adjustment of TAF tape initialisation).
1021    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1022    
1023    checkpoint45a_post
1024    o compute Rho over the whole domain (extend iMin,jMin indices)
1025    o specific exchange for X-slice domain (case Ny=1)
1026    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1027    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1028    
1029    checkpoint44h_post = checkpoint45
1030    o Fix to restore differentiability:
1031      place at which packages_init_variables is called in
1032      initialise_varia is crucial for reverse control flow.
1033    o modifications in GMRedi to enable stable adjoint
1034      (corresponding modif's in thermodynamics, dynamics)
1035    o added missing hook for sponge layer code in external_forcing
1036    o modified test cost functions
1037    o storing in gad_advection (plus removal of write(0,*)!
1038    o missing headers TR1.h added in convective_adjustment routines
1039    o errorMessageUnit set non-equal zero in eeboot
1040      (conflict on some platforms, e.g. IBM SP3)
1041    o modified carbon verif.
1042    
1043    checkpoint44h_pre
1044    o vertical grid option: allow to put the Interface at the middle between
1045      2 cell-centers ; replace delZ in pkg/kpp by drF.
1046    o GM Advective form: Tracers are advected using the residual transport (=
1047      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1048    
1049    checkpoint44g_post
1050    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1051      results) ; ifdef missing in thermodynamics.F
1052    
1053    checkpoint44f_pre,checkpoint44f_post
1054    o added PTRACERS package
1055      This allows an arbitrary number of passive tracers to be integrated
1056      forward simultaneously with the dynamicaly model.
1057      + Implemented so far:
1058        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1059        - I/O and checkpointing
1060        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1061      + Not implemented so far:
1062        - KPP
1063        - OBCS
1064      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1065        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1066        line in data.pkg.
1067      + This package is disabled by default since it increases storage.
1068    
1069    
1070    o testscript: added -cleanup option
1071    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1072                 b) enable to filter 2D fields.
1073    
1074    checkpoint44e_pre,post
1075    o re-wrote convective adjustment to use pre-calculated weights
1076      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1077      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1078      Original calls to convect() still in place.
1079    
1080    chkpt44d_pre,post
1081    o added missing EXCLUDE_MONITOR flags
1082    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1083      (incompatible typ in MIN/MAX expressions caused problems
1084      on IBM SP3)
1085    o in genmake added variable MAKEDEPEND
1086      plus resetting for case SunOS
1087    o added timer_stats.c routine for IBM SP3
1088    o removed variables in dynamics
1089    !!! I forgot to create tag chkpt44d_pre !!!
1090    !!! But chkpt44d_pre = chkpt44c_post    !!!
1091    
1092    o real fresh water flux implemented with non-linear free-surface.
1093    
1094    chkpt44c_pre,post
1095    o few fix (mask in shap_s2, EmPmR in external_field_load,
1096      USE_NATURAL_BCS in solve_for_P);
1097    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1098    
1099    checkpoint44b_pre/_post
1100    o merge of relevant stuff from the ecco-branch:
1101      - genmake: removed $S64 overwrite for case SunOS
1102      - pkg/exf: update and corrections for field swapping and obcs
1103      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1104                  harmonized between ECCO and MITgcm
1105      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1106                      updated checkpointing_lev... lists for obcs
1107      - model/src: minor changes in forward_step, plot_field
1108                   added directive for divided adjoint in the_main_loop
1109      - pkg/mdsio: added mdsio_gl_slice
1110    
1111    o check parameters & config (chkpt44a_pre,post)
1112    o OBC and NonLin_FrSurf.
1113    
1114    checkpoint44
1115    o fix bug in mom_vi_del2uv
1116    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1117    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1118    o update AIM experiments (NCEP input files)
1119    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1120    o added some stuff for AD
1121    
1122    checkpoint43
1123    o added two new advection tests
1124    o added global 4x4 degree ocean test
1125    o added test of H&S94 with free surface on cube
1126    o some final mods for gradient check, adjoint,...
1127    
1128    checkpoint42
1129      Fixed AD-related problems:
1130    o Store directives up-to-date with re-arranged Adams-Bashforth
1131      (mainly thermodynamics.F)
1132    o New store directives for multi-dim. advection schemes
1133      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1134      * new common block and key passkey
1135      (mainly gad_advection.F)
1136    o Modified store directives for split of dynamics/thermodynamics
1137      for the case ALLOW_KPP
1138    o Cleaned argument list for timestep_tracer.F
1139    
1140    checkpoint41
1141    o re-formatted/added comments in prologues of key subroutines
1142      to work with protex
1143    
1144    checkpoint40
1145    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1146    o added FLT (floats) package from Arne along with demo. experiment
1147    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1148      implementation of forward-in-time forcing terms
1149    o more mods for non-linear free-surface including new variable
1150    o modified multi-dim method to work on cube
1151    o bug fix in KPP (from DM)
1152    
1153    checkpoint40pre9
1154    o added DST advection schemes
1155    o fix MPI bug on SGI's
1156    o modifications for non-linear free-surface
1157    o fixed conditionals for fixed flow/passive tracer only mode
1158    o added tension/strain form of stress tensor
1159    o changes to commenting of arguments for TAF/TAMC
1160    o added/updated many matlab scripts
1161    o added multi-dimensional advection method for tracers
1162      
1163    checkpoint40pre8
1164    o new package rw/
1165      Added method for dumping intermediate local arrays:
1166      mdsio_writetile - same as mdsio_writefield except works from inside
1167                        bi,bj loop
1168      mdsio_writelocal - same as mdsio_writetile except works for local
1169                         arrays
1170      write_local_r? - higher-level wrapper for mdsio_writelocal
1171      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1172      Example given at end of mom_vecinv.F that dumps some local arrays.
1173    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1174      control flux-form versus vector invariant code.
1175      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1176      or genmake -DISABLE ...
1177    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1178      (additional storing is now needed for case vecinv;
1179      currently nothing implemented to switch this storing off
1180      in case fluxform is used since no CPP flag available).
1181    
1182    checkpoint40pre7
1183    o bug fix in dynamics.F
1184      calc_viscosity called before k=1,Nr loop.
1185    o added some #ifdef's ALLOW_PASSIVE_TRACER
1186    o cleaned initialisations in ctrl_map_ini
1187      related to TAF
1188    
1189    checkpoint40pre6
1190    o split dynamics into thermodynamics & dynamics
1191    o corresponding split of calc_diffusivity into
1192      calc_diffusivity, calc_viscosity
1193      (kpp_calc_diff, kpp_calc_visc).
1194    o Added diffkr, kapgm to control variables
1195    o bug fix in gmredi_slope_limit for ldd97
1196    
1197    checkpoint40pre5
1198    o proper initialization of Adams-Bashforth time stepping
1199      + uses forward step for very first step of model (iter=0)
1200    o re-generated *all* output since almost all output is modified by this
1201      change (sorry but we've been putting this one off for about 2 years)
1202      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1203        *not* regenerated since they are already out of date and I don't
1204        want to create the impression that they are suddenly working.
1205    o removed KAP stuff for DEC's
1206    o modified/added many .cvsignore files in */code and */input
1207    o added new expt "solid-body.cs-32x32x1"
1208      + this uses an alternative form of ini_curvilinear_grid.F which
1209        is not necessarily any better than the current one...
1210    
1211    checkpoint40pre4
1212    o added re-initialisations of utrans,vtrans,rtrans in
1213      calc_common_factors which are crucial for TAF.
1214    o extended iMin,jMin range for calc_common_factors,
1215      calc_diffusivity
1216    o added option ALLOW_PASSIVE_TRACER
1217    o a few minor updates and fixes
1218    
1219    checkpoint40pre3
1220    o created calc_gtr1.F for gad package
1221    o split the_main_loop and re-introduced forward_step
1222    o some recomputations of nIter0 for TAMC
1223    
1224    checkpoint40pre2
1225    o Updated to latest branch of AJA, JMC
1226    o Added gradient check package
1227    o Added routines for passive tracer handling
1228    o Added carbon sequestration sensitivity experiment
1229    
1230    checkpoint39
1231     o Modifications and fixes to support TAMC
1232       (mainly missing or wrong directives)
1233     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1234       in addummy_in_stepping
1235     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1236     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1237     o Included following packages:
1238       cal: calendar
1239       exf: external forcing
1240       ecco: essential routines to control use of cal, exf
1241             (NB: this is not the full ECCO environment)
1242     o disabled some packages by default in genmake
1243    
1244    checkpoint38
1245     o see notes_c37_adj.txt
1246     o corrected wrong layer index in external_forcing_t
1247     o replaced the_main_loop/forward_step by the_main_loop
1248     o removed forceoutput from write_state
1249       (replaced criteria for initial/final state)
1250     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1251    
1252    checkpoint37
1253     o mdsio.F routine split and packaged in pkg/mdsio
1254       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1255        used unless genmake -disable=mdsio)
1256     o allow a more precise surface-geopotential gradient for the atmosphere
1257       taking into account the change in space of Alpha (=1/rho) at the surface.
1258     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1259       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1260     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1261       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1262       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1263     o Time-Average diagnostics defined as a pseudo package "timeave".
1264     o pickup files : old pickup (before c35) did not work with new code (c35
1265       and after) unless activating 2 commented lines in initialise-varia.
1266     o Non-Hydrostatic pickup file Pb fixed.
1267     o bug with Rigid-lid version (since c35) fixed.  
1268    
1269    checkpoint36
1270     o implement Crank-Nickelson barotropic time-stepping
1271     o recover Time-Average diagnostics
1272     o fix Pb in checkpoint (PR#19)
1273     o AIM become a standard package ; clean unused CPP_kees
1274    
1275    checkpoint35
1276     o subtantial rewrite of dynamics.f
1277     o allows staggered time-stepping
1278     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1279     o added bottom drag (linear + quadratic)
1280    
1281    checkpoint34
1282     o Modified exchange routines for correct reverse simulation.
1283     o Added verification output to comply with bug fix in impldiff.F
1284       as of c33 (exp2, natl_box).
1285     o Corrected store directives in dynamics.F
1286     o Corrected array boundaries in impldiff.F
1287     o Corrected array dimensions in gmredi.
1288       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1289     o Added routine GLOBAL_SUM_INT to global_sum.F
1290     o Added mdsio_gl.F for ECCO purposes.
1291    
1292    checkpoint33
1293     o Fixed bug in lower BC in impldiff.F
1294     o Fixed confusion about units of forcing arrays in FFIELDS.h
1295       namely Fu,Fv,Qnet,Qsw,EmPmR:
1296       - Removed verification/natl_box/code/external_fields_scale.F
1297         (did not differ from that in model/src)
1298       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1299         (see FFIELDS.h for description)
1300       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1301         kpp_calc.F and kpp_transport_t.F
1302       - Removed model/src/external_fields_scale.F and calls to it
1303       - verification/natl_box uses flux data with "atmospheric" sign so
1304         a special version of external_fields_load.F is used to
1305         change the data as it's read in. This way, the arrays
1306         have the right units and signs at all times tha a user could
1307         possibly use them.
1308     o Corrected genmake to delete a temporary file during configuration
1309    
1310    checkpoint32
1311     o Scaling of forcing fields moved from external_forcing.F to
1312       external_fields_scale.F, called directly after loading fields.
1313     o Surface relaxation terms added to surface tendency fields in
1314       extra subroutine.
1315     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1316       fields.
1317     o Changes in GMRedi to comply with packaging structure.
1318     o Modifications and bug fixes in KPP package.
1319     o Verification experiment for KPP added (verification/nat_box/)
1320    
1321    checkpoint31
1322     o Packages interface brought in line with defined standard
1323       -> new routines packages_...F
1324       -> changes in initialise_fixed.F, initialise_varia.F
1325       -> enables initialisation interface for ECCO package
1326     o Rescaling of external forcing fields immediately after read
1327       (removed from external_forcing.F)
1328       -> new: surface_fields_scale.F
1329       -> affects ini_foorcing.F, external_fields_load.F
1330     o Computation of surface tendencies before tendency updates.
1331       -> new: external_forcing_surf.F
1332     o Change of variable names useGMRedi, useKPP, useECCO
1333     o Further changes in dynamics.F, impldiff.F for TAMC
1334     o Tested for experiments 0, 2, 4.
1335       - not yet tested for GMRedi.
1336       - not yet tested for KPP.
1337    
1338    checkpoint30
1339     o Updates for OBCs
1340     o New experiment for test OBCs (internal_wave)
1341     o New output.txt in verification/exp4/results/
1342     o Updates for KPP: calculation of viscosity corrected, new variables
1343       kpp_dumpFreq and kpp_taveFreq
1344     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1345       and entry for T90 in genmake
1346    
1347    checkpoint29
1348     o packaged KPP and GM/Redi
1349    
1350    checkpoint28
1351     o Corrected initialization of hFacMin for difference vertical coordinates
1352     o Modified calculation of partial cell thickness to more robust algorithm
1353     o config_summary.F: replaced write_1D_... by write_0D_...
1354       read_write.F: added subroutines write_0D_...
1355     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1356       included some initialisations required for TAMC.
1357     o routine calc_isoslopes: modified sqrt computation to make it
1358       differentiable for zero argument.
1359     o routines dynamics, impldiff:
1360       included store directives and tape key computations required for TAMC.
1361     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1362    
1363    checkpoint27
1364     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1365       formulation works properly with variable resolution.
1366     o restructured the calling tree between the_model_main() and dynamics()
1367     o split initialise() into initialise_fixed() and initialise_varia()
1368     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1369       in new routine ini_psurf()
1370    
1371    checkpoint26
1372     o moved some #ifdef in optional routines to encompass everything
1373       except the argument declarations. This was using up some memory.
1374     o fixed macros like _ADT to work with both versions of Linux cpp
1375     o cleaned up some unused and uninitialized variables
1376       (helps when debugging with strict compile options)
1377     o split up CPP_EEOPTIONS.h into options and macros
1378       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1379     o patch for 2 processor JAM mode
1380    
1381    checkpoint25
1382     o updates for OBCs and NH
1383     o dramatically reduced memory usage
1384     o added "JAM" routines for use on Artic network
1385     o parameterization of convection by implicit vertical diffusion
1386     o added a diagnostic of convective index
1387     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1388       (this is was partly for OBCs and NH but also in anticipation of
1389        an explicit free-surface option)
1390     o initial state input files for U and V
1391    
1392    checkpoint24
1393     o Removed some spurious "REAL"s
1394     o Updated KPP to latest version from JPL
1395     o Added a COS(latitude) in horizontal viscosity
1396    
1397    checkpoint23
1398     o Added del^4 diffusion for salt and temperature
1399     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1400    
1401    checkpoint22
1402     o Made many small changes: implicit none, format(i5), etc...
1403     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1404    
1405    checkpoint21
1406     o Introduced new I/O package that supports direct-access records (mdsio.F)
1407     o Split-up mid-level I/O routines
1408     o Updated input data for experiments 0,1,2,4 and 5
1409     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1410    
1411    checkpoint20
1412     o Tidied up open-boundaries some more
1413     o Added non-hydrostatic code
1414     o Fixed some input data
1415     o Modified MPI start-up to work in "coupled" context.
1416    
1417    checkpoint19
1418     o Tidied up directory structure for verification experiments.
1419     o Added new code for open boundaries.
1420     o Corrected advective terms near boundaries.
1421     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1422     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1423     o Split default parameters out of ini_parms.F into set_defaults.F.
1424    
1425    checkpoint18
1426     o Further changes for optional code generation with
1427       CPP - ugh!
1428    
1429  checkpoint17  checkpoint17
1430   o Beginning to incorporating modularity   o Beginning to incorporating modularity
1431     for supporting atmos. and ocean configs.     for supporting atmos. and ocean configs.

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