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revision 1.23 by adcroft, Mon Aug 2 15:39:41 1999 UTC revision 1.224 by jmc, Mon Dec 15 02:21:14 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    
27    checkpoint52d_pre
28    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
29    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
30    
31    checkpoint52c_post
32    o Fixing OPTIONS files for use of exf:
33      - ALLOW_ECCO not needed
34      - ECCO_CPPOPTIONS.h should not be included from
35        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
36        as has been the case in the past
37      - All cal/exf related options are currently set in
38        single header file. Should remain so until we
39        agree on a consistent new policy.
40    o Removed all CPP options for cal package.
41      cal has no more CPP options.
42    o modified STOREs in GAD_ADVECTION
43    o corrected key comp. for passkey
44    
45    checkpoint52b_post
46    o new version: "thsice" of thermodynamic sea-ice pkg:
47     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
48     - modify fluxes but do not change theta directly;
49     - light cleaning of bulk_force pkg (still needed with thsice).
50     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
51       + output_thsice.txt to test thsice & bulk_force pkgs.
52    o put back grid & coriolis monitor output.
53    checkpoint52b_pre
54    
55    o call "do_the_model_io" at the beginning (=> dump initial state)
56    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
57    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
58      (need info on NUMBER_OF_PTRACERS)
59    o missing PTRACERS headers in some routines
60    o default tamc.h in pkg/autodiff supposed to crash
61      to ensure proper customization
62    
63    checkpoint52a_post
64    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
65      - moved surfaceTendencyTice from pkg/seaice to main code
66      - subroutine FREEZE_SURFACE now limits only surface temperature
67        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
68        => new output.txt for global_ocean.cs32x15 & global_with_exf
69      - keep the old version of FREEZE for backward compatibility;
70        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
71      - corresponding modifs for TAF directives
72    o added surface flux output variables to TIMEAVE_STATVARS
73    o time-averaged output for pkg/ptracers
74    o fix problem with ECCO-related divided adjoint
75      snapshot file was missing some ad-variables,
76      but no warning issued by TAF
77    
78    checkpoint52a_pre
79    o some bug fixes for #undef REAL4_IS_SLOW
80    
81    checkpoint52 = ecco_c52_e35
82    o after testing adjoints of checkpoint51u_post
83    
84    checkpoint51u_post
85    o this is the post-merge tag of the ecco-branch
86      (needs another clean checkout and re-testing)
87    o various natl_box_adjoint configs and results
88      but no input fields
89    o obcs adjoint not yet merged!
90    o adding ECCO global 1x1 and 2x2 degree configs
91    o updated/extended some store directives for seaice
92    o pkg/ecco now containes ecco-specific part of cost function
93    o top level routines the_main_loop, forward_step
94      supersede those in model/src/
95      previous input data.cost now in data.ecco
96      (new namelist ecco_cost_nml)
97    o in ctrl/ cleaned some cross-dependencies and updated CPP options
98    
99    checkpoint51t_post
100    o this is the pre-merge tag of the ecco-branch
101    
102    checkpoint51s_post
103    o cleanup: removed various obsolete #define-s
104    o pkg/grdchk
105      - renamed 'ph-grd 3' to 'grad-res'
106      - merged from ecco-branch
107        (remaining bug fixes for obcs gradient checks)
108      - additional high-precision output for testreport
109        (grep for 'precision_grdchk_result')
110    
111    checkpoint51r_post
112    o cleaned up or removed CPP_OPTIONS.h files
113    o updated results for some of the tests to reflect the new
114      optfiles (-ieee: -O0 instead of -O3)
115    
116    checkpoint51q_post
117    o cd_code:
118      - moved cd_scheme.F -> cd_code_scheme.F
119      - separate read_checkpoint from cd_code_ini_vars.F
120      - separated cd_code part from write_checkpoint
121      - updated AD_SOURCE, generated .flow
122      - added CD_CODE_VARS.h to the_main_loop
123      - Moving cd_code specific store dir.s to pkg/cd_code
124    o ctrl package totally restructured
125      - pack/unpack now optional and decoupled from
126        xx_/adxx_ I/O
127      - ctrl_pack/unpack cleaned
128        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
129      - confined inclusion of AD_CONFIG.h to where necessary.
130    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
131    
132    checkpoint51p_post
133    o create initial cd_code package
134      - WARNING: the initialization of fields within packages
135        is broken because INI_FIELDS (where READ_CHECKPOINT is
136        called) is called *before* PACKAGES_INIT_VARIABLES.
137        This seems to be backwards since
138        1) its important to initially zero the entire field including
139           the "halo" region
140        2) zeroing needs to be done *before* reading pickup info
141           and the pickup call might or might not happen in any
142           particular run
143      - this needs an overhaul for R2
144    o cleanup verification/*/code/GMREDI_OPTIONS.h
145    o cleanup testreport
146    
147    checkpoint51o_post
148    o bringing AD-related verif's up to date with genmake2
149      - carbon/
150      - global_ocean.90x40x15/
151      - hs.94.1x64x5/
152      - (front_relax/ )
153    o (more) consistent directory structure for AD-related verif.'s
154    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
155    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
156    o bug fix in find_alpha.F for MDJWF:
157      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
158        change rho -> rho-rhoConst
159      - replace call find_rho to find_rhonum
160    o initialisation of rFlx extended to full array (required by TAF)
161      and shifted to thermodynamics
162    o removed PTRACERS.h in ptracers routine
163    o added surfacetendencyPtr to S/R parameter list pracers_forcing
164    o Correcting initialisations for fVerU, fVerV.
165    o helping TAF to recognize dependency on kUp for
166      fVerU, fVerV
167    o Replacing delZ by delR in pkg/ctrl/
168    checkpoint51o_pre
169    
170    o undid all of cp51 pending some cleanups and discussion
171    o added the [#include "AD_CONFIG.h"] statement to all files that need
172       it for adjoint/tl #defines
173     o re-worked the build logic in genmake2 to support AD_CONFIG.h
174     o removed tools/genmake since it no longer works
175    
176    checkpoint51n_post
177    o modifications to make FREEZE flux visible to pkg/kpp
178      - moved surfaceTendencyTice from pkg/seaice to main code
179      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
180      - subroutine FREEZE now limits only surface temperature
181        (this means new output.txt for global_ocean.90x40x15,
182         global_ocean.cs32x15, and global_with_exf)
183    o added surface flux output variables to TIMEAVE_STATVARS
184    
185    checkpoint51n_pre
186    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
187    o added [#include "AD_CONFIG.h"] to all files that use the following
188      defines:
189      - ALLOW_ADJOINT_RUN
190      - ALLOW_TANGENTLINEAR_RUN
191      - ALLOW_ECCO_OPTIMIZATION
192    
193    checkpoint51m_post
194    o incorporating changes to get TAMC/TAF working in genmake2
195      - added new TAMC/TAF targets to the Makefile
196      - various cleanups related to package handling
197      - these changes should have no impact on the forward model
198    
199    checkpoint51l_post
200    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
201     - faster algorithm for cal_addtime.F
202     - higher precision arithmetic, where needed
203     - pkg/exf *startdate variables changed from calendar date to
204       model integration time
205    
206    checkpoint51l_pre
207    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
208    o enable to apply restoring on S & T only in a latitude band.
209    o update output (external_forcing_surf modif. change truncation errors)
210       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
211    
212    checkpoint51k_post
213    o change default to: useNHMTerms=.FALSE.
214     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
215       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
216     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
217        exp1, ideal_2D_oce
218     - change data file of oceanic exp (leave the results unchanged for now)
219       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
220    o set gravitySign automatically according to the vertical coordinate used
221      (and change sign: back to "logical" value: +1 when R increases downward)
222    o added an include barrier to the default CPP_OPTIONS.h and
223      removed the #include "PACKAGES_CONFIG.h" from it
224    o fix a bug in mom_fluxform (from chk51j_post)
225    
226    checkpoint51j_post
227    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
228    o adjusted some flow directives (dynamics, thermodynamics)
229    o added cubed-sphere case to test cost function
230    o heckpoint_lev?_directives.h now include
231      pkg-specific directives, whenever those are enabled.
232    o Moving pkg-specific flow directives to corresponding pkg
233      Moving pkg-specific differentiation list to corresponding pkg
234      Moving pkg-specific checkpoint-lev storing to corresponding pkg
235      ---> conventions are
236           - pkg_ad.flow
237           - pkg_ad_diff.list
238           - pkg_ad_check_lev?_dir.h
239    
240    checkpoint51i_post
241    o merge of the branch-genmake2
242      - knowingly breaks the older genmake
243      - automatic generation of all ALLOW_${PKG_NAME} defines
244      - new testreport supersedes older testscript
245    o large number of package inclusion and header cleanups
246    checkpoint51i_pre
247    
248    o new output for adjoin of global ocean vector invariant
249    o fix for checkpoint of thermodynamic seaice and bulk_force
250    o Steph gchem various cleanups
251    
252    checkpoint 51h_pre
253    o fixed some single quotes
254    o modify gchem pkg to be more versatile
255    o modifications to clean up dic pkg
256    o add pkg/cfc
257    
258    checkpoint51g_post
259    o provide links for ARPACK and ADM*TLM
260    o start removing verification/vero/
261    o update AD-related stuff
262      (in particular some IF-statements in model/src/ routines)
263    o adding to verification/global_ocean.90x40x15/ adjoint of
264      vector invariant setup
265    
266    checkpoint51f_post
267    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
268    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
269      of tracer Green's fucntions for ocean inversion project.
270    
271    checkpoint51f_pre
272    o Added on-the-fly spatial interpolation capability
273        "USE_EXF_INTERPOLATION" to pkg/exf.
274      - This is a temporary Cartesian-grid hack until
275        the super-duper ESMF coupler becomes available.
276      - See verification/global_with_exf/README for usage example.
277      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
278        flags and modified pkg/seaice accordingly.
279    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
280        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
281        non-local transport term.
282    
283    checkpoint51e_post
284    o pkg/mom_vecinv:
285      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
286      - add time-ave diagnostic of vorticity advection.
287    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
288    o atmospheric geopotential: - include water vapor effect;
289                                - use p^kappa in p* scaling.
290    o land pkg: read initial state from files.
291    o AIM : add stratospheric drag in the upper level
292    
293    checkpoint51d_post
294    o change function ILNBLNK (=> last non-blank char.) to return zero
295      (instead of the string length) when the string. char is empty
296    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
297    o modif's to restore TAMC compatibility
298      - avoid "_d" constructs in PARAMETER declarations
299      - avoid interrupting lines by comment lines
300    o Use cluster local disks for purely local I/O
301      vs. globally visible disks needed for ctrl stuff
302      (merged from ecco-branch)
303      - new active_file_loc... and mdsio_..._loc routines
304      - affected packages: autodiff, ctrl, grdchk, mdsio
305    
306    checkpoint51c_post
307    o introducing integer flag debugLevel
308      - debLevZero: suppress all output
309      - debLevA: standard
310      - debLevB: equivalent to current debugMode=.TRUE.
311    o introducing pathname variable mdsioLocalDir for mdsio
312      that can be specified at runtime
313      (relevant for cluster I/O to local disk)
314    `
315    >>>checkpoint51b_post
316    adjoint of ptracers
317    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
318    o extended state in checkpoint_lev?, etc.
319    o alternative ctrl/cost with tr1 or ptracer
320    o new comlev1_bibj_ptracers
321    o new ptracers.flow
322    o made ptracers_forcing same as external_forcing_s
323    o added verification for adjoint with ptracers
324      - adm. grdchk fail so far
325      - tlm. grdchk OK
326      - checked tapelev/comlev recomputations: OK
327    <<<checkpoint51b_pre
328    
329    checkpoint51a_post
330    o added code for biogeochemistry package
331      - new pkgs: dic, gchem
332      - new subroutine in ptracers
333    o modify code for biogeo packages
334      - in model/src and pkg/ptracers
335    
336    checkpoint51
337    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
338      - autodiff, ctrl, exf, grdchk, seaice
339      kept separate packages
340      - cost, ecco, obcs
341    o updating verification/internal_wave, verification/lab_sea
342      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
343    
344    checkpoint50i_post
345    o Preparing next differentiable checkpoint and sync
346      of MAIN vs. ecco-branch
347      - 1st step: this one is differentiable
348      - 2nd step: next(! not this) checkpoint will have updated packages
349                  from ecco-branch)
350    
351    checkpoint50h_post
352    o new package "land": provide surface BC for AIM.
353    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
354    o AIM: use true log-P extrapolation for near surface temp (= as in
355        F.Molteni paper) ; update aim.5l_cs output.
356    o New variable in PARM03 for more flexible pickups
357    o somewhat cleaned package initialisation sequence for
358      ctrl/ cost/ ecco/ in packages_... routines
359    
360    checkpoint50g_post
361    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
362      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
363      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
364        made the default because of faster convergence than ADI
365    
366    checkpoint50f_post
367    o exf totally restructured
368      - replaced all exf_set_ routines by one generic exf_set_gen.F
369        and made sure it's still differentiable
370      - split exf_getffields.F into new exf_bulkformulae.F
371      - exf_inscal_/exf_outscal_ suffixes consistent with field names
372      - updated adjoint/makefile and relevant verif. accordingly
373    
374    checkpoint50f_pre
375     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
376          + change Evap over land. (update aim.5l_cs output)
377     o added missing .cvsignores and made uniform across expts
378     o changed configuration of tidal_basin_2d expt
379     o added pkg/debug functions for tracing code in fatal crashes
380     o tidied pkg/monitor to use MONITOR_OPTIONS.h
381     o new fn in pkg/monitor to stop model if solution grows too big
382     o removed lots of single quotes from comments
383    
384    checkpoint50e_post
385    o make KPP work with PTRACERS
386     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
387       nearly a copy of kpp_transport_s
388     - there is no analogue to SurfaceTendencyS, so I have to use
389       gPtr(of the surface layer) instead
390    o add a new platform SunFire+mpi (SunFire 15000) to genmake
391    checkpoint50e_pre
392    
393    checkpoint50d_post
394    o change kpp output from multiple-record state files to single-record state
395      files analogous to write_state.F
396    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
397      analogous to the cg2d-related output.
398    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
399      so that writing to internal file fn (with length 512) fails.
400    checkpoint50d_pre
401    
402    checkpoint50c_post
403    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
404    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
405    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
406    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
407    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
408    
409    checkpoint50c_pre
410    Merging from release1_p13:
411    o bug fix for pkg/seaice dynamic solver
412    o Added SEAICE_initialHEFF to pkg/seaice
413    
414    checkpoint50b_post
415    o store u*,v* in gU,V instead of in guNm1,gvNm1
416    o in order to put the momForcing out of the Adams-Bashforth:
417      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
418      to timestep.F
419    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
420    o re-generate output for highly sensitive test-exp:
421       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
422    
423    checkpoint50b_pre
424    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
425    o corrected CPP option mismatch in exf_Bulk... functions for case
426      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
427    
428    checkpoint50a_post
429    o Bug fix for merging between c50 and KPP.
430      ikey was passed from thermodynamics to kpp_calc via
431      common block rather than being recomputed in kpp_calc,
432      in contradiction with new key itdkey.
433      New key ikppkey created, and tamc.h headers updated.
434    
435    checkpoint50
436    - 2nd step of merge with ecco-branch:
437      merge changes in ecco-branch back into main trunk
438    - bug fix in find_alpha
439    - more storing in gmredi_calc_tensor.F, kpp_routines.F
440    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
441    - merged some sliced AD support routines
442    
443    checkpoint49
444    merged from ecco-branch:
445    o exf:
446      - Enable initialisation of forcing fields to constant
447        (runtime) values.
448      - in exf_getffields.F
449        Reduce i-/j-loop to interior domain, discarding overlaps.
450        That also fixes wrong TAF-key computations for key_1, key_2
451        with bulf formulae.
452      - exf_init.F modify #ifdef for exf_init_evap
453      - exf_getffieldrec.F, ctrl_getrec.F
454        The following INT-usages are not safe:
455          fldsecs  = int(fldsecs/fldperiod)*fldperiod
456          fldcount = int(fldsecs/fldperiod) + 1
457        and were modified.
458    o autodiff: checkpoint_lev...
459      - updated storing for bulk formulae (some arrays were missing)
460      - added state for seaice package
461      - synchronized with main branch
462    o DIVA:
463      Modif.s in
464      - the_main_loop.F
465      - the_model_main.F
466      and added cost_final_restore.F cost_final_store.F
467      o With these changes, it is possible to fully separate
468        the first forward run to compute the cost function (mdthe_main_loop)
469        and adjoint runs over individual DIVA intervals (adthe_main_loop)
470        into separate model executions.
471        This enables better tuning of DIVA to given queue sizes.
472      o Loss of cost function value in consecutive DIVA runs is
473        fixed by storing to 'costfinal' file.
474      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
475        beginning/end of adjoint integration is accounted for.
476      The current changes apply to TAF-1.4.26.
477      TAF has one remaining bug, requiring one manual change
478      (see MITgcm manual).
479    o cal: synchronized between MAIN and ecco-branch
480    
481    checkpoint48i_post
482    o Changes to restore differentiability of code w.r.t. previous tag
483      (mostly adding new routines to make list and replacing
484      pressure by totPhiHyd).
485    o Updated and merged grdchk package
486      - has both ADM and TLM checks
487      - works for single- and multi-proc.
488      - output cleaned
489      - worked successfully for parallel DIVA
490    o genmake:
491      - Adding -platform=SP4
492      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
493    o Modif. for DIVA:
494      ctrl_unpack should not be called in intermediate DIVA interval.
495      (similar thing would apply for active files such as
496      tbar, sbar, psbar, which should not be reinitialised;
497      only relevant for ecco-branch)
498    
499    checkpoint48h_post
500    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
501    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
502    o Added SEAICE_initialHEFF to pkg/seaice
503    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
504    
505    checkpoint48g_post
506    --- EOS:
507    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
508      store total Potential in totPhyHyd for diagnostics & EOS.
509    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
510    --- Pressure/geopotential gradient:
511    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
512    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
513      ( changes results of global_ocean_pressure )
514    o NLFS + z-coord.: add eta*Rho' contribution.
515    o accurate phiHyd when using interface-W at the middle between 2 centers
516     ( changes results of ideal_2D_oce )
517    o includes r* 2nd term in potential gradient.
518    
519    checkpoint48f_post
520    Merging from release1_p12:
521    o Modifications for using pkg/exf with pkg/seaice
522      - improved description of the various forcing configurations
523      - added basic radiation bulk formulae to pkg/exf
524      - units/sign fix for evap computation in exf_getffields.F
525      - updated verification/global_with_exf/results/output.txt
526    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
527      (SBO) core products, including oceanic mass, center-of-mass,
528      angular, and bottom pressure (see pkg/sbo/README.sbo).
529    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
530      to avoid negative values in shallow regions.
531      - updated verification/natl_box/results/output.txt
532      - updated verification/lab_sea/results/output.txt
533    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
534    o Added useSingleCpuIO option (see PARAMS.h).
535    o Updated useSingleCpuIO option in mdsio_writefield.F to
536      work with multi-field files, e.g., for single-file pickup.
537    o pkg/seaice:
538      - bug fix in growth.F: QNET for no shortwave case
539      - added HeffFile for specifying initial sea-ice thickness
540      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
541    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
542      kpp_transport_t.F, forward_step.F, and the_main_loop.F
543    o pkg/seaice:
544      - adjoint-friendly modifications
545      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
546    
547    checkpoint48e_post
548    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
549    o dynamics: change definition of computational domain & adapt mom_fluxform
550      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
551    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
552        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
553        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
554        global_ocean.90x40x15 global_with_exf global_ocean_pressure
555        inverted_barometer solid-body.cs-32x32x1
556      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
557    
558    checkpoint48d_post
559    o in preparation for r*:
560     a) use pre-computed gradient of hydrostatic potential:
561        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
562     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
563        => affects results of glob_oce_pressure (different truncation error)  
564      update output.txt of ideal_2D_oce & global_ocean_pressure
565    
566    checkpoint48d_pre
567    o in preparation for r*:
568      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
569      pass the 2 comp. of the grad. as arguments to momentum S/R.
570      but for the moment, only used if it does not change the results.
571    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
572    
573    checkpoint48c_post
574    Modifications in treatment of initial flux forcing controls
575    to avoid extra storing of flux fields.
576    
577    checkpoint48c_pre
578    o Added tidal_basin_2d experiment (currently 1D!)
579    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
580    
581    checkpoint48b_post
582    o r* coordinate added in #ifdef NONLIN_FRSURF block.
583     (modification to pressure gradient not yet implemented)
584    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
585      (for U & V) that are used for vertical advection of momentum.
586    
587    checkpoint48a_post
588    o In preparation for r*, use temp. array to compute vertical transport
589       in flux-form momentum pkg. => change results of few test-exp.
590      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
591                        lab_sea, natl_box & plume_on_slope
592    
593    checkpoint48
594    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
595    
596    checkpoint47j_post
597    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
598    o moved adexch from forward_step to addummy_in_stepping
599    o added exch in ctrl_map_...
600    o aveFreq.=0. at end of cost_final to avoid overwrite in
601      reverse checkpointing loop
602    o Yet more changes in gmredi:
603      * adgmredi_calc_tensor
604        avoiding all recomputation of gmredi_slope_limit
605      * adgmredi_x/y/rtransport
606        added flag for excessive storing to avoid recomp. of
607        u/v/rtans, dTdx/y/z
608        -> this is not really necessary and very memory-consuming
609      * adgmredi_slope_psi:
610        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
611      * gmredi_slope_limit
612        re-activated full calculation of taperfct for case 'ac02'
613    o updating verification/ adjoints of carbon, global_ocean.90x40x15
614    
615    checkpoint47i_post
616    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
617    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
618      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
619    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
620    o gmredi: fix few bugs.
621    
622    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
623    This will be a good checkpoint to plug into the ecco-branch.
624    o few modif.'s to get latest version adjointed
625      (mainly kick out code in ini_linear_phisurf)
626    o modif's to run adjoint with exactConserv
627    o case GM_BOLUS_ADVEC should be cleaned
628      S/R gmredi_slope_psi should be cleaned
629    o verification/carbon now has exactConserv=.TRUE.
630    
631    checkpoint47g_post
632    o time-average AIM output: becomes independent from statvars time-average
633      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
634    o After TAF bug fix:
635      Tested adjoint of gmredi package.
636      Tests were done with checkpoint47 rather than with latest
637      checkpoint47f_post since the latter is broken for the adjoint
638      verification/carbon/ contains both ADM and TLM gradient checks.
639    Here they are, before they get changed/lost/stolen.
640    Mostly modif.'s to fix numerical sensitivities.
641    Gradient checks OK for
642    - GM_taper_scheme:
643      * clipping
644      * ac02
645      * linear
646      * glw91
647      * dm95
648      * ldd97
649    - GMREDI_OPTIONS:
650      * GM_VISBECK_VARIABLE_K
651      * GM_NON_UNITY_DIAGONAL
652      * GM_EXTRA_DIAGONAL
653      * GM_BOLUS_ADVEC
654    in conjunction with data.gmredi parameters to be checked in
655    in a few minutes under verification/carbon/code/
656    
657    checkpoint47f_post
658    Merging from release1_p10:
659    o modifications for using pkg/exf with pkg/seaice
660      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
661        and SEAICE_EXTERNAL_FLUXES
662      - pkg/exf CPP options EXF_READ_EVAP and
663        EXF_NO_BULK_COMPUTATIONS
664      - usage examples are Experiments 8 and 9 in
665        verification/lab_sea/README
666      - verification/lab_sea default experiment now uses
667        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
668    
669    checkpoint47e_post
670    o created a tag prior to creating a branch
671    
672    checkpoint47d_post
673    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
674      at the bottom boundary had an erroneous half slip boundary condition
675    o added bottom drag and no slip boundary condition capabilities to
676      oceanic pressure coordinates code
677    o added new verification experiment global_ocean_pressure, this experiment is
678      also described in the tutorial section of the manual
679    checkpoint47d_pre
680    
681    checkpoint47c_post
682    o Added a verification experiment for a global cubed-sphere ocean run
683      -  verification/global_ocean.cubed32x32x30
684      -  uses pkg/therm_seaice and pkg/bulk_forcing
685    
686    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
687    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
688      when using P-coordinate; only implemented for atmospheric config.
689    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
690      NOTES: requires option NONLIN_FRSURF to be "#define".
691    o update advect_xz/results/output.txt (left from checkpoint44g_post)
692    
693    checkpoint47b_post
694    Merging from release1_p9:
695    o pkg/seaice
696      - removed GOTO's and added taf directives
697      - double precision constants to reduce the g77 (Linux)
698        to F77 (SGI) differences reported in release1_p8
699    o tools/genmake
700      - added SGI options
701    o verification/testscript
702      - updated to that of checkpoint47a_post
703    o verification/global_ocean.90x40x15/input/eedata
704      - modified for SGI f77 compatibility
705    o verification/lab_sea
706      - added description of sea-ice model
707      - added missing matlab routines
708      - added test of thermodynamics parallelization
709    
710    checkpoint47a_post
711    o new pkg: aim_v23
712     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
713       for now, keep the same surface forcing as before.
714     - Part-Cell implemented into AIM; check that Heat & Water are conserved
715     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
716     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
717    o add diagnostic of surface correction term in monitor output
718    
719    o bulk_force and therm_seaice
720    - Two packages:  bulk_force (Bulk forcing)
721      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
722    - Earlier integration from Stephaine Dutkiewicz
723      and Patrick Heimbach.
724    - Two ifdef statements for compile time,
725       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
726    
727    checkpoint47
728    differentiable version of checkpoint46n_post
729    o bug fix in quasihydrostaticterms
730    o * "clean" adjoint code (in terms of extensive recomputations)
731        can now be obtained for all GMREDI options (i.e. for
732        - GM_VISBECK_VARIABLE_K
733        - GM_NON_UNITY_DIAGONAL
734        - GM_EXTRA_DIAGONAL
735        - GM_BOLUS_ADVEC )
736      * However, wrong gradient check problem remains unsolved.
737      * New CPP options have been introduced for different
738        tapering schemes
739    o external_fields_load now part of differentiation list
740    o pressure needs multiple storing;
741      would be nice to have store_pressure at beginning or
742      end of forward_step, e.g. by having phiHyd global (5-dim.)
743      (NB: pressure is needed for certain cases in find_rho,
744      which is also invoked through convective_adjustment).
745    o recomputations in find_rho for cases
746     'JMD95'/'UNESCO' or 'MDJWF' are OK.
747    o #define ATMOSPHERIC_LOADING should be differentiable
748    o ini_forcing shifted to begining of initialise_varia
749    o Incorporating QNVS line search routines into MITgcm
750      (this is separate code, and therefore not under pkg)
751      lsopt/, optim/
752    o Updated verification/carbon/
753      - #define GM_VISBECK_VARIABLE_K
754      - GM_taper_scheme    = 'ldd97'    
755    
756    checkpoint46n_post
757    Merging from release1_p8:
758    o verification/natl_box:
759      updating new external_fields_load routine
760    o New package: pkg/seaice
761      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
762      The sea-ice code is based on Hibler (1979-1980).
763      Two sea-ice dynamic solvers, ADI and LSR, are included.
764      In addition to computing prognostic sea-ice variables and diagnosing
765      the forcing/external data fields that drive the ocean model,
766      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
767      The implied surface heat flux is then stored in variable
768      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
769      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
770      non-local transport term.  Because this call precedes model
771      thermodynamics, temperature under sea-ice may not be "exactly" at
772      the freezing point by the time theta is dumped or time-averaged.
773      N.B.: fairly large differences in accuracy occur across
774            different platforms/compilers; comparison between
775            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
776            generated output gives:
777       T           S           U           V
778      C D M    c        m  s        m  s        m  s        m  s
779      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
780      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
781      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
782    
783      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
784    o GAD:
785      - generated new common blocks to account for call of
786        same gad routines with differing traceridentities
787        (needed to modify tracerIdentity indices in GAD.h)
788      - generated separate common blocks for case useCubedSphereExchange
789        (Department of Futurology)
790      - parameter lists to gmredi_?transport: added tracerIdentity
791      - added new key indices to tamc.h
792    o external_fields_load:
793      - added this routine to TAF list
794      - needed to make some common blocks global and additional storing
795        along the same lines as exf package (checkpoint_lev?_directives.h)
796    o exf:
797      updated external forcing package
798      - bug fixes carried over from ecco-branch
799        (missing OBCS_OPTIONS.h in two routines)
800      - enable easy to use "no forcing".
801      - added exf I/O for atmospheric loading
802      - added exf I/O for runoff data
803      - transfered scaling between exf <-> MITgcm to exf namelist
804    o Adding new verification experiment global_with_exf.
805      This verification experiment is almost identical to the
806      global_ocean.90x40x15 experiment, except that it uses
807      the exf (and cal) package instead of the
808      external_fields_load routine (cf README file).
809    
810    checkpoint46m_post
811    o modified testscript to return -- when there are no lines of "%MON" output
812    o added new flag "quasiHydrostatic" for QH mode
813      and new routine quasihydrostaticterms()
814    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
815      New routine: mom_u_coriolis_nh()
816    o fixed sign of non-hydrostatic metric terms in u and v equations.
817      Depend on correct sign of gravitySign.
818    o added work.pc* to .cvsignore in aim directories using ifc
819    o introduced flag for controllin non-hydrostatic metric terms
820    o removed gravitySign from PARM04
821    o switched to g77/ifc from pgf77 in aim experiments
822    
823    checkpoint46l_post
824    o made convective adjustment work with pressure coordinates:
825     - changed the direction of k-loop in convective_adjustment.F for the
826       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
827     - adjusted the reference pressure k-index in convective_adjustment.F
828     - adjusted the convection condition in convect.F (in analogy to
829       calc_ivdc.F)
830     - convective_adjustment no longer computes anything on the halos
831     - removed the warnings about negative salinity from find_rho.F and
832       find_alpha.F; instead the new routine look_for_neg_salinity, called
833       at the beginning of find_rho, find_alpha, and find_beta, does a
834       check of the entire slice, if CPP-option
835       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
836    checkpoint46l_pre
837    
838    checkpoint46k_post
839    o fixed the verification/global_ocean.90x40x15 experiment:
840     - new bathymetry (the world according to A., JMC, and M.)
841     - new initial fields and forcing fields (*.bin files)
842     - new POLY3.COEFFS (for the next release one should switch to a full
843       equation of state: JMD95P or MDJWF)
844     - fixed several errors and redundancies in the data file
845     - experiment uses looped cells
846     - added matlab directory with diagnostic scripts for plotting of output
847    
848    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
849     - read AIM physics parameters from a file (data.aimphys)
850     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
851    
852    checkpoint46j_post
853    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
854    o move wVel computation at the end of the time step, in S/R integr_continuity
855    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
856    o update timeave pkg for wVel diagnostic.
857    checkpoint46j_pre
858    
859    checkpoint46i_post
860    o Clean up AIM package (and keep the results unchanged):
861      include CPP_OPTION and use IMPLICT NONE in all routines ;
862      declare all the variables _RL ; use _d 0 for all numerical constants.
863      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
864    
865    checkpoint46h_post
866    o cleaned up the use of rhoNil and rhoConst.
867      - rhoNil should only appear in the LINEAR equation of state, everywhere
868        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
869        and the dynamical equations are all divided by rhoConst
870    o introduced new parameter rhoConstFresh, a reference density of fresh
871      water, to remove the fresh water flux's dependence on rhoNil. The default
872      value is 999.8 kg/m^3
873    o cleanup up external_forcing.F and external_forcing_surf.F
874      - can now be used by both OCEANIC and OCEANICP
875    checkpoint46h_pre
876    
877     Added code to convert surface volume flux (fresh water) into
878     a mass flux when using P coordinates in the ocean (OCEANICP).
879     Note: It assumes you have set rho0=rhoConst=density of fresh water.
880    
881    checkpoint46g_post
882    o Include a new diagnostic variable phiHydLow for the ocean model
883      - in z-coordinates, it is the bottom pressure anomaly
884      - in p-coordinates, it is the sea surface elevation
885      - in both cases, these variable have global drift, reflecting the mass
886        drift in z-coordinates and the volume drift in p-coordinates
887      - included time averaging for phiHydLow, be aware of the drift!
888    o depth-dependent computation of Bo_surf for pressure coordinates
889      in the ocean (buoyancyRelation='OCEANICP')
890      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
891        Theta, Salinity, and Pressure in the parameter list. This routine is
892        presently contained in find_rho.F. This routine does not give the
893        correct density for 'POLY3', which would be a z-dependent reference
894        density.
895    o cleaned up find_rho
896      - removed obsolete 'eqn' from the parameter list.
897    o added two new verification experiments: gop and goz
898      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
899    checkpoint46g_pre
900    
901    checkpoint46f_post
902    o Enable tangent linear (forward mode) gradient checks:
903      - extended active file handling to g_... files
904      - added TANGENT_SIMULATION to theSimulationMode
905      - extended grdchk package accordingly
906    o added tangent linear setup in verification/carbon/code_ftl
907    o added adjoint setup in verification/front_relax/code_ad
908    
909    checkpoint46e_post
910    o Added new equation of state -> MDJWF
911      - EOS of McDougall et al., 2002, JAOT, submitted
912      - caveat: the equation of state is only valid for a smaller (more
913        realistic?) range of values than JMD95P/Z and UNESCO
914      - added masks to the calculation of pressure in store_pressure
915      - added more check values for density in check_eos (ini_eos.F), some of
916        the old check values are out of the range of the MDJWF-eos, so don't
917        expect perfect matches for those
918    checkpoint46e_pre
919    
920    checkpoint46d_post
921    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
922      'OCEANICP', also initialised field pressure correctly in ini_eos in the
923      case of pressure coordinates. eosType='JMD95Z' in
924      combination with buoyancyRelation='OCEANICP' now causes an error.
925    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
926      in find_alpha/beta.
927    checkpoint46d_pre
928    
929    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
930      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
931    
932    checkpoint46c_post
933    o Changes necessary for ocean in p-coordinates
934     -  Added new buoyancy relation = 'OCEANICP'
935     -  Added new parameters = gravitySign (this used to be contained inside
936        the factor dRdZ which I added when we first switched to R coordinates).
937     X GM/Redi is not compatible (yet)
938     X bottom drag and no-slip need to be debugged.
939    checkpoint46c_pre
940    
941    checkpoint46b_post
942    o Added new equation of state -> JMD95Z and JMD95P
943      - EOS of Jackett and McDougall, 1995, JAOT
944      - moved all EOS parameters into EOS.h
945      - new routines ini_eos.F, store_pressure.F
946    o Added UNESCO EOS, but not recommended because it requires
947      in-situ temperature (see JMD95)
948    o Modified formatting for knudsen2.f in utils/knudsen2 and added
949      unesco.f to be used with POLY3
950    checkpoint46b_pre
951    
952    checkpoint46a_post
953    o Added (atmospheric) pressure loading
954      - new field in FFIELDS.h, etc...
955      - new cpp flag ATMOSPHERIC_LOADING
956    o Changed hFacC to _hFacC in calc_phi_hyd.F
957    o Added SHORTWAVE_HEATING to some files for consistency
958    checkpoint46a_pre
959    
960    checkpoint46
961    further merges from release1_p5
962    o new ctrl package
963      - adopted from ECCO environment to enable optimization
964      - added Eliassen Palm fluxes to controls
965    o added Eliassen Palm flux controls to gradient check package
966    o cost package
967      - Compatible with new ctrl package
968      - added Eliassen Palm cost hooks
969      - modif's of existing cost functions
970    o Adjoint-related bug fixes in kpp:
971      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
972      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
973    o autodiff package
974      - flow directives:
975        + new for S/R do_the_model_io
976        + enhanced for S/R checkpoint
977        + new gmredi.flow
978      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
979        disable adcommon.h/g_common.h by default.
980      - fixed problem for adjoint of global_max
981    o modified verification/carbon/
982    o New setup for adjoint of global_ocean
983    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
984    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
985    o incorporated hooks for sponge layer code (external_forcing.F)
986    
987    checkpoint45d_post
988    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
989    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
990      (affects plume_on_slope "cg2d" output)
991    o add new parameter deltaTfreesurf for free-surface time stepping
992    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
993    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
994    o change phiMin in exp1 (to agree with documentation)
995    o add new flags:
996     - T,S forcing inside/outside Adams-Bashforth
997     - turn off temp,salt advection and/or forcing
998     - for each tracer, define internal flag for multiDimAdvection & A-B
999    o monitor: change definition of KE to check conservation of Energy
1000    
1001    checkpoint45c_post
1002    o Removed f90 comments ("!")
1003    o Modified initialisations to enable exf package for MITgcm
1004      (without invoking ECCO_PACKAGE).
1005    o modifications to gradient check package (Martin Losch)
1006      - enable centered differences
1007      - modified format of standard output
1008    
1009    checkpoint45b_post
1010    o cleaned exchange calls in cg2d
1011    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1012    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1013      to configure barotropic setup (Martin Losch)
1014    o moved some initialisations within bi,bj loop in dynamics
1015      (TAF flow dependency)
1016    o in initialise_varia, moved call packages_init_variables
1017      before convective_adjustment_init
1018      (corresponding adjustment of TAF tape initialisation).
1019    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1020    
1021    checkpoint45a_post
1022    o compute Rho over the whole domain (extend iMin,jMin indices)
1023    o specific exchange for X-slice domain (case Ny=1)
1024    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1025    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1026    
1027    checkpoint44h_post = checkpoint45
1028    o Fix to restore differentiability:
1029      place at which packages_init_variables is called in
1030      initialise_varia is crucial for reverse control flow.
1031    o modifications in GMRedi to enable stable adjoint
1032      (corresponding modif's in thermodynamics, dynamics)
1033    o added missing hook for sponge layer code in external_forcing
1034    o modified test cost functions
1035    o storing in gad_advection (plus removal of write(0,*)!
1036    o missing headers TR1.h added in convective_adjustment routines
1037    o errorMessageUnit set non-equal zero in eeboot
1038      (conflict on some platforms, e.g. IBM SP3)
1039    o modified carbon verif.
1040    
1041    checkpoint44h_pre
1042    o vertical grid option: allow to put the Interface at the middle between
1043      2 cell-centers ; replace delZ in pkg/kpp by drF.
1044    o GM Advective form: Tracers are advected using the residual transport (=
1045      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1046    
1047    checkpoint44g_post
1048    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1049      results) ; ifdef missing in thermodynamics.F
1050    
1051    checkpoint44f_pre,checkpoint44f_post
1052    o added PTRACERS package
1053      This allows an arbitrary number of passive tracers to be integrated
1054      forward simultaneously with the dynamicaly model.
1055      + Implemented so far:
1056        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1057        - I/O and checkpointing
1058        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1059      + Not implemented so far:
1060        - KPP
1061        - OBCS
1062      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1063        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1064        line in data.pkg.
1065      + This package is disabled by default since it increases storage.
1066    
1067    
1068    o testscript: added -cleanup option
1069    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1070                 b) enable to filter 2D fields.
1071    
1072    checkpoint44e_pre,post
1073    o re-wrote convective adjustment to use pre-calculated weights
1074      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1075      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1076      Original calls to convect() still in place.
1077    
1078    chkpt44d_pre,post
1079    o added missing EXCLUDE_MONITOR flags
1080    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1081      (incompatible typ in MIN/MAX expressions caused problems
1082      on IBM SP3)
1083    o in genmake added variable MAKEDEPEND
1084      plus resetting for case SunOS
1085    o added timer_stats.c routine for IBM SP3
1086    o removed variables in dynamics
1087    !!! I forgot to create tag chkpt44d_pre !!!
1088    !!! But chkpt44d_pre = chkpt44c_post    !!!
1089    
1090    o real fresh water flux implemented with non-linear free-surface.
1091    
1092    chkpt44c_pre,post
1093    o few fix (mask in shap_s2, EmPmR in external_field_load,
1094      USE_NATURAL_BCS in solve_for_P);
1095    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1096    
1097    checkpoint44b_pre/_post
1098    o merge of relevant stuff from the ecco-branch:
1099      - genmake: removed $S64 overwrite for case SunOS
1100      - pkg/exf: update and corrections for field swapping and obcs
1101      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1102                  harmonized between ECCO and MITgcm
1103      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1104                      updated checkpointing_lev... lists for obcs
1105      - model/src: minor changes in forward_step, plot_field
1106                   added directive for divided adjoint in the_main_loop
1107      - pkg/mdsio: added mdsio_gl_slice
1108    
1109    o check parameters & config (chkpt44a_pre,post)
1110    o OBC and NonLin_FrSurf.
1111    
1112    checkpoint44
1113    o fix bug in mom_vi_del2uv
1114    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1115    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1116    o update AIM experiments (NCEP input files)
1117    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1118    o added some stuff for AD
1119    
1120    checkpoint43
1121    o added two new advection tests
1122    o added global 4x4 degree ocean test
1123    o added test of H&S94 with free surface on cube
1124    o some final mods for gradient check, adjoint,...
1125    
1126    checkpoint42
1127      Fixed AD-related problems:
1128    o Store directives up-to-date with re-arranged Adams-Bashforth
1129      (mainly thermodynamics.F)
1130    o New store directives for multi-dim. advection schemes
1131      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1132      * new common block and key passkey
1133      (mainly gad_advection.F)
1134    o Modified store directives for split of dynamics/thermodynamics
1135      for the case ALLOW_KPP
1136    o Cleaned argument list for timestep_tracer.F
1137    
1138    checkpoint41
1139    o re-formatted/added comments in prologues of key subroutines
1140      to work with protex
1141    
1142    checkpoint40
1143    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1144    o added FLT (floats) package from Arne along with demo. experiment
1145    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1146      implementation of forward-in-time forcing terms
1147    o more mods for non-linear free-surface including new variable
1148    o modified multi-dim method to work on cube
1149    o bug fix in KPP (from DM)
1150    
1151    checkpoint40pre9
1152    o added DST advection schemes
1153    o fix MPI bug on SGI's
1154    o modifications for non-linear free-surface
1155    o fixed conditionals for fixed flow/passive tracer only mode
1156    o added tension/strain form of stress tensor
1157    o changes to commenting of arguments for TAF/TAMC
1158    o added/updated many matlab scripts
1159    o added multi-dimensional advection method for tracers
1160      
1161    checkpoint40pre8
1162    o new package rw/
1163      Added method for dumping intermediate local arrays:
1164      mdsio_writetile - same as mdsio_writefield except works from inside
1165                        bi,bj loop
1166      mdsio_writelocal - same as mdsio_writetile except works for local
1167                         arrays
1168      write_local_r? - higher-level wrapper for mdsio_writelocal
1169      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1170      Example given at end of mom_vecinv.F that dumps some local arrays.
1171    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1172      control flux-form versus vector invariant code.
1173      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1174      or genmake -DISABLE ...
1175    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1176      (additional storing is now needed for case vecinv;
1177      currently nothing implemented to switch this storing off
1178      in case fluxform is used since no CPP flag available).
1179    
1180    checkpoint40pre7
1181    o bug fix in dynamics.F
1182      calc_viscosity called before k=1,Nr loop.
1183    o added some #ifdef's ALLOW_PASSIVE_TRACER
1184    o cleaned initialisations in ctrl_map_ini
1185      related to TAF
1186    
1187    checkpoint40pre6
1188    o split dynamics into thermodynamics & dynamics
1189    o corresponding split of calc_diffusivity into
1190      calc_diffusivity, calc_viscosity
1191      (kpp_calc_diff, kpp_calc_visc).
1192    o Added diffkr, kapgm to control variables
1193    o bug fix in gmredi_slope_limit for ldd97
1194    
1195    checkpoint40pre5
1196    o proper initialization of Adams-Bashforth time stepping
1197      + uses forward step for very first step of model (iter=0)
1198    o re-generated *all* output since almost all output is modified by this
1199      change (sorry but we've been putting this one off for about 2 years)
1200      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1201        *not* regenerated since they are already out of date and I don't
1202        want to create the impression that they are suddenly working.
1203    o removed KAP stuff for DEC's
1204    o modified/added many .cvsignore files in */code and */input
1205    o added new expt "solid-body.cs-32x32x1"
1206      + this uses an alternative form of ini_curvilinear_grid.F which
1207        is not necessarily any better than the current one...
1208    
1209    checkpoint40pre4
1210    o added re-initialisations of utrans,vtrans,rtrans in
1211      calc_common_factors which are crucial for TAF.
1212    o extended iMin,jMin range for calc_common_factors,
1213      calc_diffusivity
1214    o added option ALLOW_PASSIVE_TRACER
1215    o a few minor updates and fixes
1216    
1217    checkpoint40pre3
1218    o created calc_gtr1.F for gad package
1219    o split the_main_loop and re-introduced forward_step
1220    o some recomputations of nIter0 for TAMC
1221    
1222    checkpoint40pre2
1223    o Updated to latest branch of AJA, JMC
1224    o Added gradient check package
1225    o Added routines for passive tracer handling
1226    o Added carbon sequestration sensitivity experiment
1227    
1228    checkpoint39
1229     o Modifications and fixes to support TAMC
1230       (mainly missing or wrong directives)
1231     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1232       in addummy_in_stepping
1233     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1234     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1235     o Included following packages:
1236       cal: calendar
1237       exf: external forcing
1238       ecco: essential routines to control use of cal, exf
1239             (NB: this is not the full ECCO environment)
1240     o disabled some packages by default in genmake
1241    
1242    checkpoint38
1243     o see notes_c37_adj.txt
1244     o corrected wrong layer index in external_forcing_t
1245     o replaced the_main_loop/forward_step by the_main_loop
1246     o removed forceoutput from write_state
1247       (replaced criteria for initial/final state)
1248     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1249    
1250    checkpoint37
1251     o mdsio.F routine split and packaged in pkg/mdsio
1252       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1253        used unless genmake -disable=mdsio)
1254     o allow a more precise surface-geopotential gradient for the atmosphere
1255       taking into account the change in space of Alpha (=1/rho) at the surface.
1256     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1257       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1258     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1259       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1260       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1261     o Time-Average diagnostics defined as a pseudo package "timeave".
1262     o pickup files : old pickup (before c35) did not work with new code (c35
1263       and after) unless activating 2 commented lines in initialise-varia.
1264     o Non-Hydrostatic pickup file Pb fixed.
1265     o bug with Rigid-lid version (since c35) fixed.  
1266    
1267    checkpoint36
1268     o implement Crank-Nickelson barotropic time-stepping
1269     o recover Time-Average diagnostics
1270     o fix Pb in checkpoint (PR#19)
1271     o AIM become a standard package ; clean unused CPP_kees
1272    
1273    checkpoint35
1274     o subtantial rewrite of dynamics.f
1275     o allows staggered time-stepping
1276     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1277     o added bottom drag (linear + quadratic)
1278    
1279    checkpoint34
1280     o Modified exchange routines for correct reverse simulation.
1281     o Added verification output to comply with bug fix in impldiff.F
1282       as of c33 (exp2, natl_box).
1283     o Corrected store directives in dynamics.F
1284     o Corrected array boundaries in impldiff.F
1285     o Corrected array dimensions in gmredi.
1286       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1287     o Added routine GLOBAL_SUM_INT to global_sum.F
1288     o Added mdsio_gl.F for ECCO purposes.
1289    
1290    checkpoint33
1291     o Fixed bug in lower BC in impldiff.F
1292     o Fixed confusion about units of forcing arrays in FFIELDS.h
1293       namely Fu,Fv,Qnet,Qsw,EmPmR:
1294       - Removed verification/natl_box/code/external_fields_scale.F
1295         (did not differ from that in model/src)
1296       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1297         (see FFIELDS.h for description)
1298       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1299         kpp_calc.F and kpp_transport_t.F
1300       - Removed model/src/external_fields_scale.F and calls to it
1301       - verification/natl_box uses flux data with "atmospheric" sign so
1302         a special version of external_fields_load.F is used to
1303         change the data as it's read in. This way, the arrays
1304         have the right units and signs at all times tha a user could
1305         possibly use them.
1306     o Corrected genmake to delete a temporary file during configuration
1307    
1308    checkpoint32
1309     o Scaling of forcing fields moved from external_forcing.F to
1310       external_fields_scale.F, called directly after loading fields.
1311     o Surface relaxation terms added to surface tendency fields in
1312       extra subroutine.
1313     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1314       fields.
1315     o Changes in GMRedi to comply with packaging structure.
1316     o Modifications and bug fixes in KPP package.
1317     o Verification experiment for KPP added (verification/nat_box/)
1318    
1319    checkpoint31
1320     o Packages interface brought in line with defined standard
1321       -> new routines packages_...F
1322       -> changes in initialise_fixed.F, initialise_varia.F
1323       -> enables initialisation interface for ECCO package
1324     o Rescaling of external forcing fields immediately after read
1325       (removed from external_forcing.F)
1326       -> new: surface_fields_scale.F
1327       -> affects ini_foorcing.F, external_fields_load.F
1328     o Computation of surface tendencies before tendency updates.
1329       -> new: external_forcing_surf.F
1330     o Change of variable names useGMRedi, useKPP, useECCO
1331     o Further changes in dynamics.F, impldiff.F for TAMC
1332     o Tested for experiments 0, 2, 4.
1333       - not yet tested for GMRedi.
1334       - not yet tested for KPP.
1335    
1336    checkpoint30
1337     o Updates for OBCs
1338     o New experiment for test OBCs (internal_wave)
1339     o New output.txt in verification/exp4/results/
1340     o Updates for KPP: calculation of viscosity corrected, new variables
1341       kpp_dumpFreq and kpp_taveFreq
1342     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1343       and entry for T90 in genmake
1344    
1345    checkpoint29
1346     o packaged KPP and GM/Redi
1347    
1348    checkpoint28
1349     o Corrected initialization of hFacMin for difference vertical coordinates
1350     o Modified calculation of partial cell thickness to more robust algorithm
1351     o config_summary.F: replaced write_1D_... by write_0D_...
1352       read_write.F: added subroutines write_0D_...
1353     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1354       included some initialisations required for TAMC.
1355     o routine calc_isoslopes: modified sqrt computation to make it
1356       differentiable for zero argument.
1357     o routines dynamics, impldiff:
1358       included store directives and tape key computations required for TAMC.
1359     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1360    
1361    checkpoint27
1362     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1363       formulation works properly with variable resolution.
1364     o restructured the calling tree between the_model_main() and dynamics()
1365     o split initialise() into initialise_fixed() and initialise_varia()
1366     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1367       in new routine ini_psurf()
1368    
1369    checkpoint26
1370     o moved some #ifdef in optional routines to encompass everything
1371       except the argument declarations. This was using up some memory.
1372     o fixed macros like _ADT to work with both versions of Linux cpp
1373     o cleaned up some unused and uninitialized variables
1374       (helps when debugging with strict compile options)
1375     o split up CPP_EEOPTIONS.h into options and macros
1376       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1377     o patch for 2 processor JAM mode
1378    
1379    checkpoint25
1380     o updates for OBCs and NH
1381     o dramatically reduced memory usage
1382     o added "JAM" routines for use on Artic network
1383     o parameterization of convection by implicit vertical diffusion
1384     o added a diagnostic of convective index
1385     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1386       (this is was partly for OBCs and NH but also in anticipation of
1387        an explicit free-surface option)
1388     o initial state input files for U and V
1389    
1390  checkpoint24  checkpoint24
1391   o Removed some spurious "REAL"s   o Removed some spurious "REAL"s
1392   o Updated KPP to latest version from JPL   o Updated KPP to latest version from JPL

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