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revision 1.9 by adcroft, Thu Jul 2 14:20:04 1998 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
1391     o Removed some spurious "REAL"s
1392     o Updated KPP to latest version from JPL
1393     o Added a COS(latitude) in horizontal viscosity
1394    
1395    checkpoint23
1396     o Added del^4 diffusion for salt and temperature
1397     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1398    
1399    checkpoint22
1400     o Made many small changes: implicit none, format(i5), etc...
1401     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1402    
1403    checkpoint21
1404     o Introduced new I/O package that supports direct-access records (mdsio.F)
1405     o Split-up mid-level I/O routines
1406     o Updated input data for experiments 0,1,2,4 and 5
1407     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1408    
1409    checkpoint20
1410     o Tidied up open-boundaries some more
1411     o Added non-hydrostatic code
1412     o Fixed some input data
1413     o Modified MPI start-up to work in "coupled" context.
1414    
1415    checkpoint19
1416     o Tidied up directory structure for verification experiments.
1417     o Added new code for open boundaries.
1418     o Corrected advective terms near boundaries.
1419     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1420     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1421     o Split default parameters out of ini_parms.F into set_defaults.F.
1422    
1423    checkpoint18
1424     o Further changes for optional code generation with
1425       CPP - ugh!
1426    
1427    checkpoint17
1428     o Beginning to incorporating modularity
1429       for supporting atmos. and ocean configs.
1430     o Small changes for TAMC complinace
1431     o New ultra simple test case. Barotropic box
1432       configuration "exp0".
1433    
1434    checkpoint16
1435     o Minor changes to exchange routines to support
1436       accumulation in reverse mode. Adjoint of an
1437       assignment is an addition.
1438     o Changes to support compilation by TAMC (LR(1)
1439       syntax) and by g77 under Linux ( 72 character
1440       limit ).
1441    
1442    checkpoint15
1443     Rewrote exchange routines to allow
1444     o General tile <-> tile connectivity.
1445     o TAMC reverse mode flag ( is this really needed? )
1446     o Variable width overlap and exchange region widths.
1447     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1448       shmput/shmget, VIA, SYSV shmem and every other cool
1449       communication method.
1450    
1451    checkpoint14
1452     Consistent isomorphism chages made. These allow dynamical core
1453     to support both pressure and meters as a vertical coordinate.
1454    
1455    checkpoint13
1456     Release which corrects global_max problem and a couple
1457     of KGM time-averaging diagnostic errors. Also contains
1458     a double-gyre experiment setup as well as the baseline
1459     4 degree global template. The double gyre template is
1460     organised to allow it to be applied automatically to
1461     the baseline configuration.
1462    
1463    branch-point-rdot
1464     A few tidy-ups have been made bt the real point of this
1465     check-point (excuse the pun) is to allow a branch to be
1466     made for the purposes of adding the rDot alterations.
1467     I don't want to commit the rDot to the main-trunk until
1468     we've actually tested it...
1469    
1470    checkpoint12
1471     Tidy up and added generic genmake script (formerly
1472     configure script).
1473     Released to testers.
1474    
1475  checkpoint11  checkpoint11
1476   Re-arranged initialise() and introduced ini_vertical_grid()   Re-arranged initialise() and introduced ini_vertical_grid()
1477   and ini_masks_etc().   and ini_masks_etc().

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