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revision 1.13 by cnh, Wed Sep 9 15:24:19 1998 UTC revision 1.246 by jmc, Wed Jan 21 21:37:32 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52i_post
7    o removed CPP_EEOPTIONS.h from verification/*/code
8    o updated the tiling for global_ocean_pressure
9    checkpoint52i_pre
10    
11    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
12      the old pkg/aim).
13    
14    checkpoint52h_pre
15    o shortened offending lines in exch2_send_rx?.template
16    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
17    o genmake2: add build & execute test for NetCDF code
18    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
19      old grid files, moved CPP_EEMACROS.h to pkg/exch2
20    o added useSingleCPUIO flag to monitor.F and mon_out.F
21    o added temporary hack for sea-ice dynamics on the cube:
22      metric terms are ignored and it is assumed that
23      there is no sea-ice on cube faces 1, 2, 4, and 5.
24    
25    checkpoint52f_post
26    o added exch2 cube routines to pkg/exch2
27    o modified hs94.cs-32x32x5 to use it
28    o added new grid files to hs94.cs-32x32x5
29    checkpoint52f_pre
30    
31    checkpoint52e_post
32    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
33      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
34    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
35      to work with implicit vertical advection and AB ;
36    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
37    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
38     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
39    checkpoint52e_pre
40    
41    o fix bug in impldiff when Nr=1 or Nr=2.
42    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
43    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
44    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
45      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
46    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
47    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
48    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
49    
50    checkpoint52d_post
51    o re-tiled many expts to allow comparison in multi-processor mode
52      - updated output accordingly
53      - changed hs94.128x64x5 to use intial T from file rather than use the
54        random number generator
55    o add infrastructure in model routines for fizhi and gridalt packages
56    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
57    o changes to permit hi-res, cubed-sphere, configuration
58      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
59      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
60      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
61        of surface winds for the cube
62      (A verification experiment, based on global_ocean.cs32x15, but with
63       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
64       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
65       complete with example surface forcing files and matlab scripts to look
66       at the output and compare it with that of global_ocean.cs32x15.)
67    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
68       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
69       to conform to the common rule.
70    o check-in the first version of the coupler + interfaces for multi-components
71       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
72       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
73       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
74       - ocean and atmos. share the same horizontal grid (no interpolation).
75       - exchanges between component and coupler is done in forward_step
76    o new verification experiment, cpl_aim+ocn:
77       coupled ocean - AIM atmosphere on cs32 grid.
78    
79    checkpoint52d_pre
80    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
81    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
82    
83    checkpoint52c_post
84    o Fixing OPTIONS files for use of exf:
85      - ALLOW_ECCO not needed
86      - ECCO_CPPOPTIONS.h should not be included from
87        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
88        as has been the case in the past
89      - All cal/exf related options are currently set in
90        single header file. Should remain so until we
91        agree on a consistent new policy.
92    o Removed all CPP options for cal package.
93      cal has no more CPP options.
94    o modified STOREs in GAD_ADVECTION
95    o corrected key comp. for passkey
96    
97    checkpoint52b_post
98    o new version: "thsice" of thermodynamic sea-ice pkg:
99     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
100     - modify fluxes but do not change theta directly;
101     - light cleaning of bulk_force pkg (still needed with thsice).
102     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
103       + output_thsice.txt to test thsice & bulk_force pkgs.
104    o put back grid & coriolis monitor output.
105    checkpoint52b_pre
106    
107    o call "do_the_model_io" at the beginning (=> dump initial state)
108    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
109    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
110      (need info on NUMBER_OF_PTRACERS)
111    o missing PTRACERS headers in some routines
112    o default tamc.h in pkg/autodiff supposed to crash
113      to ensure proper customization
114    
115    checkpoint52a_post
116    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
117      - moved surfaceTendencyTice from pkg/seaice to main code
118      - subroutine FREEZE_SURFACE now limits only surface temperature
119        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
120        => new output.txt for global_ocean.cs32x15 & global_with_exf
121      - keep the old version of FREEZE for backward compatibility;
122        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
123      - corresponding modifs for TAF directives
124    o added surface flux output variables to TIMEAVE_STATVARS
125    o time-averaged output for pkg/ptracers
126    o fix problem with ECCO-related divided adjoint
127      snapshot file was missing some ad-variables,
128      but no warning issued by TAF
129    
130    checkpoint52a_pre
131    o some bug fixes for #undef REAL4_IS_SLOW
132    
133    checkpoint52 = ecco_c52_e35
134    o after testing adjoints of checkpoint51u_post
135    
136    checkpoint51u_post
137    o this is the post-merge tag of the ecco-branch
138      (needs another clean checkout and re-testing)
139    o various natl_box_adjoint configs and results
140      but no input fields
141    o obcs adjoint not yet merged!
142    o adding ECCO global 1x1 and 2x2 degree configs
143    o updated/extended some store directives for seaice
144    o pkg/ecco now containes ecco-specific part of cost function
145    o top level routines the_main_loop, forward_step
146      supersede those in model/src/
147      previous input data.cost now in data.ecco
148      (new namelist ecco_cost_nml)
149    o in ctrl/ cleaned some cross-dependencies and updated CPP options
150    
151    checkpoint51t_post
152    o this is the pre-merge tag of the ecco-branch
153    
154    checkpoint51s_post
155    o cleanup: removed various obsolete #define-s
156    o pkg/grdchk
157      - renamed 'ph-grd 3' to 'grad-res'
158      - merged from ecco-branch
159        (remaining bug fixes for obcs gradient checks)
160      - additional high-precision output for testreport
161        (grep for 'precision_grdchk_result')
162    
163    checkpoint51r_post
164    o cleaned up or removed CPP_OPTIONS.h files
165    o updated results for some of the tests to reflect the new
166      optfiles (-ieee: -O0 instead of -O3)
167    
168    checkpoint51q_post
169    o cd_code:
170      - moved cd_scheme.F -> cd_code_scheme.F
171      - separate read_checkpoint from cd_code_ini_vars.F
172      - separated cd_code part from write_checkpoint
173      - updated AD_SOURCE, generated .flow
174      - added CD_CODE_VARS.h to the_main_loop
175      - Moving cd_code specific store dir.s to pkg/cd_code
176    o ctrl package totally restructured
177      - pack/unpack now optional and decoupled from
178        xx_/adxx_ I/O
179      - ctrl_pack/unpack cleaned
180        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
181      - confined inclusion of AD_CONFIG.h to where necessary.
182    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
183    
184    checkpoint51p_post
185    o create initial cd_code package
186      - WARNING: the initialization of fields within packages
187        is broken because INI_FIELDS (where READ_CHECKPOINT is
188        called) is called *before* PACKAGES_INIT_VARIABLES.
189        This seems to be backwards since
190        1) its important to initially zero the entire field including
191           the "halo" region
192        2) zeroing needs to be done *before* reading pickup info
193           and the pickup call might or might not happen in any
194           particular run
195      - this needs an overhaul for R2
196    o cleanup verification/*/code/GMREDI_OPTIONS.h
197    o cleanup testreport
198    
199    checkpoint51o_post
200    o bringing AD-related verif's up to date with genmake2
201      - carbon/
202      - global_ocean.90x40x15/
203      - hs.94.1x64x5/
204      - (front_relax/ )
205    o (more) consistent directory structure for AD-related verif.'s
206    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
207    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
208    o bug fix in find_alpha.F for MDJWF:
209      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
210        change rho -> rho-rhoConst
211      - replace call find_rho to find_rhonum
212    o initialisation of rFlx extended to full array (required by TAF)
213      and shifted to thermodynamics
214    o removed PTRACERS.h in ptracers routine
215    o added surfacetendencyPtr to S/R parameter list pracers_forcing
216    o Correcting initialisations for fVerU, fVerV.
217    o helping TAF to recognize dependency on kUp for
218      fVerU, fVerV
219    o Replacing delZ by delR in pkg/ctrl/
220    checkpoint51o_pre
221    
222    o undid all of cp51 pending some cleanups and discussion
223    o added the [#include "AD_CONFIG.h"] statement to all files that need
224       it for adjoint/tl #defines
225     o re-worked the build logic in genmake2 to support AD_CONFIG.h
226     o removed tools/genmake since it no longer works
227    
228    checkpoint51n_post
229    o modifications to make FREEZE flux visible to pkg/kpp
230      - moved surfaceTendencyTice from pkg/seaice to main code
231      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
232      - subroutine FREEZE now limits only surface temperature
233        (this means new output.txt for global_ocean.90x40x15,
234         global_ocean.cs32x15, and global_with_exf)
235    o added surface flux output variables to TIMEAVE_STATVARS
236    
237    checkpoint51n_pre
238    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
239    o added [#include "AD_CONFIG.h"] to all files that use the following
240      defines:
241      - ALLOW_ADJOINT_RUN
242      - ALLOW_TANGENTLINEAR_RUN
243      - ALLOW_ECCO_OPTIMIZATION
244    
245    checkpoint51m_post
246    o incorporating changes to get TAMC/TAF working in genmake2
247      - added new TAMC/TAF targets to the Makefile
248      - various cleanups related to package handling
249      - these changes should have no impact on the forward model
250    
251    checkpoint51l_post
252    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
253     - faster algorithm for cal_addtime.F
254     - higher precision arithmetic, where needed
255     - pkg/exf *startdate variables changed from calendar date to
256       model integration time
257    
258    checkpoint51l_pre
259    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
260    o enable to apply restoring on S & T only in a latitude band.
261    o update output (external_forcing_surf modif. change truncation errors)
262       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
263    
264    checkpoint51k_post
265    o change default to: useNHMTerms=.FALSE.
266     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
267       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
268     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
269        exp1, ideal_2D_oce
270     - change data file of oceanic exp (leave the results unchanged for now)
271       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
272    o set gravitySign automatically according to the vertical coordinate used
273      (and change sign: back to "logical" value: +1 when R increases downward)
274    o added an include barrier to the default CPP_OPTIONS.h and
275      removed the #include "PACKAGES_CONFIG.h" from it
276    o fix a bug in mom_fluxform (from chk51j_post)
277    
278    checkpoint51j_post
279    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
280    o adjusted some flow directives (dynamics, thermodynamics)
281    o added cubed-sphere case to test cost function
282    o heckpoint_lev?_directives.h now include
283      pkg-specific directives, whenever those are enabled.
284    o Moving pkg-specific flow directives to corresponding pkg
285      Moving pkg-specific differentiation list to corresponding pkg
286      Moving pkg-specific checkpoint-lev storing to corresponding pkg
287      ---> conventions are
288           - pkg_ad.flow
289           - pkg_ad_diff.list
290           - pkg_ad_check_lev?_dir.h
291    
292    checkpoint51i_post
293    o merge of the branch-genmake2
294      - knowingly breaks the older genmake
295      - automatic generation of all ALLOW_${PKG_NAME} defines
296      - new testreport supersedes older testscript
297    o large number of package inclusion and header cleanups
298    checkpoint51i_pre
299    
300    o new output for adjoin of global ocean vector invariant
301    o fix for checkpoint of thermodynamic seaice and bulk_force
302    o Steph gchem various cleanups
303    
304    checkpoint 51h_pre
305    o fixed some single quotes
306    o modify gchem pkg to be more versatile
307    o modifications to clean up dic pkg
308    o add pkg/cfc
309    
310    checkpoint51g_post
311    o provide links for ARPACK and ADM*TLM
312    o start removing verification/vero/
313    o update AD-related stuff
314      (in particular some IF-statements in model/src/ routines)
315    o adding to verification/global_ocean.90x40x15/ adjoint of
316      vector invariant setup
317    
318    checkpoint51f_post
319    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
320    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
321      of tracer Green's fucntions for ocean inversion project.
322    
323    checkpoint51f_pre
324    o Added on-the-fly spatial interpolation capability
325        "USE_EXF_INTERPOLATION" to pkg/exf.
326      - This is a temporary Cartesian-grid hack until
327        the super-duper ESMF coupler becomes available.
328      - See verification/global_with_exf/README for usage example.
329      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
330        flags and modified pkg/seaice accordingly.
331    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
332        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
333        non-local transport term.
334    
335    checkpoint51e_post
336    o pkg/mom_vecinv:
337      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
338      - add time-ave diagnostic of vorticity advection.
339    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
340    o atmospheric geopotential: - include water vapor effect;
341                                - use p^kappa in p* scaling.
342    o land pkg: read initial state from files.
343    o AIM : add stratospheric drag in the upper level
344    
345    checkpoint51d_post
346    o change function ILNBLNK (=> last non-blank char.) to return zero
347      (instead of the string length) when the string. char is empty
348    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
349    o modif's to restore TAMC compatibility
350      - avoid "_d" constructs in PARAMETER declarations
351      - avoid interrupting lines by comment lines
352    o Use cluster local disks for purely local I/O
353      vs. globally visible disks needed for ctrl stuff
354      (merged from ecco-branch)
355      - new active_file_loc... and mdsio_..._loc routines
356      - affected packages: autodiff, ctrl, grdchk, mdsio
357    
358    checkpoint51c_post
359    o introducing integer flag debugLevel
360      - debLevZero: suppress all output
361      - debLevA: standard
362      - debLevB: equivalent to current debugMode=.TRUE.
363    o introducing pathname variable mdsioLocalDir for mdsio
364      that can be specified at runtime
365      (relevant for cluster I/O to local disk)
366    `
367    >>>checkpoint51b_post
368    adjoint of ptracers
369    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
370    o extended state in checkpoint_lev?, etc.
371    o alternative ctrl/cost with tr1 or ptracer
372    o new comlev1_bibj_ptracers
373    o new ptracers.flow
374    o made ptracers_forcing same as external_forcing_s
375    o added verification for adjoint with ptracers
376      - adm. grdchk fail so far
377      - tlm. grdchk OK
378      - checked tapelev/comlev recomputations: OK
379    <<<checkpoint51b_pre
380    
381    checkpoint51a_post
382    o added code for biogeochemistry package
383      - new pkgs: dic, gchem
384      - new subroutine in ptracers
385    o modify code for biogeo packages
386      - in model/src and pkg/ptracers
387    
388    checkpoint51
389    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
390      - autodiff, ctrl, exf, grdchk, seaice
391      kept separate packages
392      - cost, ecco, obcs
393    o updating verification/internal_wave, verification/lab_sea
394      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
395    
396    checkpoint50i_post
397    o Preparing next differentiable checkpoint and sync
398      of MAIN vs. ecco-branch
399      - 1st step: this one is differentiable
400      - 2nd step: next(! not this) checkpoint will have updated packages
401                  from ecco-branch)
402    
403    checkpoint50h_post
404    o new package "land": provide surface BC for AIM.
405    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
406    o AIM: use true log-P extrapolation for near surface temp (= as in
407        F.Molteni paper) ; update aim.5l_cs output.
408    o New variable in PARM03 for more flexible pickups
409    o somewhat cleaned package initialisation sequence for
410      ctrl/ cost/ ecco/ in packages_... routines
411    
412    checkpoint50g_post
413    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
414      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
415      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
416        made the default because of faster convergence than ADI
417    
418    checkpoint50f_post
419    o exf totally restructured
420      - replaced all exf_set_ routines by one generic exf_set_gen.F
421        and made sure it's still differentiable
422      - split exf_getffields.F into new exf_bulkformulae.F
423      - exf_inscal_/exf_outscal_ suffixes consistent with field names
424      - updated adjoint/makefile and relevant verif. accordingly
425    
426    checkpoint50f_pre
427     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
428          + change Evap over land. (update aim.5l_cs output)
429     o added missing .cvsignores and made uniform across expts
430     o changed configuration of tidal_basin_2d expt
431     o added pkg/debug functions for tracing code in fatal crashes
432     o tidied pkg/monitor to use MONITOR_OPTIONS.h
433     o new fn in pkg/monitor to stop model if solution grows too big
434     o removed lots of single quotes from comments
435    
436    checkpoint50e_post
437    o make KPP work with PTRACERS
438     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
439       nearly a copy of kpp_transport_s
440     - there is no analogue to SurfaceTendencyS, so I have to use
441       gPtr(of the surface layer) instead
442    o add a new platform SunFire+mpi (SunFire 15000) to genmake
443    checkpoint50e_pre
444    
445    checkpoint50d_post
446    o change kpp output from multiple-record state files to single-record state
447      files analogous to write_state.F
448    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
449      analogous to the cg2d-related output.
450    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
451      so that writing to internal file fn (with length 512) fails.
452    checkpoint50d_pre
453    
454    checkpoint50c_post
455    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
456    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
457    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
458    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
459    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
460    
461    checkpoint50c_pre
462    Merging from release1_p13:
463    o bug fix for pkg/seaice dynamic solver
464    o Added SEAICE_initialHEFF to pkg/seaice
465    
466    checkpoint50b_post
467    o store u*,v* in gU,V instead of in guNm1,gvNm1
468    o in order to put the momForcing out of the Adams-Bashforth:
469      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
470      to timestep.F
471    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
472    o re-generate output for highly sensitive test-exp:
473       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
474    
475    checkpoint50b_pre
476    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
477    o corrected CPP option mismatch in exf_Bulk... functions for case
478      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
479    
480    checkpoint50a_post
481    o Bug fix for merging between c50 and KPP.
482      ikey was passed from thermodynamics to kpp_calc via
483      common block rather than being recomputed in kpp_calc,
484      in contradiction with new key itdkey.
485      New key ikppkey created, and tamc.h headers updated.
486    
487    checkpoint50
488    - 2nd step of merge with ecco-branch:
489      merge changes in ecco-branch back into main trunk
490    - bug fix in find_alpha
491    - more storing in gmredi_calc_tensor.F, kpp_routines.F
492    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
493    - merged some sliced AD support routines
494    
495    checkpoint49
496    merged from ecco-branch:
497    o exf:
498      - Enable initialisation of forcing fields to constant
499        (runtime) values.
500      - in exf_getffields.F
501        Reduce i-/j-loop to interior domain, discarding overlaps.
502        That also fixes wrong TAF-key computations for key_1, key_2
503        with bulf formulae.
504      - exf_init.F modify #ifdef for exf_init_evap
505      - exf_getffieldrec.F, ctrl_getrec.F
506        The following INT-usages are not safe:
507          fldsecs  = int(fldsecs/fldperiod)*fldperiod
508          fldcount = int(fldsecs/fldperiod) + 1
509        and were modified.
510    o autodiff: checkpoint_lev...
511      - updated storing for bulk formulae (some arrays were missing)
512      - added state for seaice package
513      - synchronized with main branch
514    o DIVA:
515      Modif.s in
516      - the_main_loop.F
517      - the_model_main.F
518      and added cost_final_restore.F cost_final_store.F
519      o With these changes, it is possible to fully separate
520        the first forward run to compute the cost function (mdthe_main_loop)
521        and adjoint runs over individual DIVA intervals (adthe_main_loop)
522        into separate model executions.
523        This enables better tuning of DIVA to given queue sizes.
524      o Loss of cost function value in consecutive DIVA runs is
525        fixed by storing to 'costfinal' file.
526      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
527        beginning/end of adjoint integration is accounted for.
528      The current changes apply to TAF-1.4.26.
529      TAF has one remaining bug, requiring one manual change
530      (see MITgcm manual).
531    o cal: synchronized between MAIN and ecco-branch
532    
533    checkpoint48i_post
534    o Changes to restore differentiability of code w.r.t. previous tag
535      (mostly adding new routines to make list and replacing
536      pressure by totPhiHyd).
537    o Updated and merged grdchk package
538      - has both ADM and TLM checks
539      - works for single- and multi-proc.
540      - output cleaned
541      - worked successfully for parallel DIVA
542    o genmake:
543      - Adding -platform=SP4
544      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
545    o Modif. for DIVA:
546      ctrl_unpack should not be called in intermediate DIVA interval.
547      (similar thing would apply for active files such as
548      tbar, sbar, psbar, which should not be reinitialised;
549      only relevant for ecco-branch)
550    
551    checkpoint48h_post
552    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
553    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
554    o Added SEAICE_initialHEFF to pkg/seaice
555    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
556    
557    checkpoint48g_post
558    --- EOS:
559    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
560      store total Potential in totPhyHyd for diagnostics & EOS.
561    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
562    --- Pressure/geopotential gradient:
563    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
564    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
565      ( changes results of global_ocean_pressure )
566    o NLFS + z-coord.: add eta*Rho' contribution.
567    o accurate phiHyd when using interface-W at the middle between 2 centers
568     ( changes results of ideal_2D_oce )
569    o includes r* 2nd term in potential gradient.
570    
571    checkpoint48f_post
572    Merging from release1_p12:
573    o Modifications for using pkg/exf with pkg/seaice
574      - improved description of the various forcing configurations
575      - added basic radiation bulk formulae to pkg/exf
576      - units/sign fix for evap computation in exf_getffields.F
577      - updated verification/global_with_exf/results/output.txt
578    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
579      (SBO) core products, including oceanic mass, center-of-mass,
580      angular, and bottom pressure (see pkg/sbo/README.sbo).
581    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
582      to avoid negative values in shallow regions.
583      - updated verification/natl_box/results/output.txt
584      - updated verification/lab_sea/results/output.txt
585    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
586    o Added useSingleCpuIO option (see PARAMS.h).
587    o Updated useSingleCpuIO option in mdsio_writefield.F to
588      work with multi-field files, e.g., for single-file pickup.
589    o pkg/seaice:
590      - bug fix in growth.F: QNET for no shortwave case
591      - added HeffFile for specifying initial sea-ice thickness
592      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
593    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
594      kpp_transport_t.F, forward_step.F, and the_main_loop.F
595    o pkg/seaice:
596      - adjoint-friendly modifications
597      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
598    
599    checkpoint48e_post
600    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
601    o dynamics: change definition of computational domain & adapt mom_fluxform
602      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
603    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
604        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
605        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
606        global_ocean.90x40x15 global_with_exf global_ocean_pressure
607        inverted_barometer solid-body.cs-32x32x1
608      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
609    
610    checkpoint48d_post
611    o in preparation for r*:
612     a) use pre-computed gradient of hydrostatic potential:
613        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
614     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
615        => affects results of glob_oce_pressure (different truncation error)  
616      update output.txt of ideal_2D_oce & global_ocean_pressure
617    
618    checkpoint48d_pre
619    o in preparation for r*:
620      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
621      pass the 2 comp. of the grad. as arguments to momentum S/R.
622      but for the moment, only used if it does not change the results.
623    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
624    
625    checkpoint48c_post
626    Modifications in treatment of initial flux forcing controls
627    to avoid extra storing of flux fields.
628    
629    checkpoint48c_pre
630    o Added tidal_basin_2d experiment (currently 1D!)
631    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
632    
633    checkpoint48b_post
634    o r* coordinate added in #ifdef NONLIN_FRSURF block.
635     (modification to pressure gradient not yet implemented)
636    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
637      (for U & V) that are used for vertical advection of momentum.
638    
639    checkpoint48a_post
640    o In preparation for r*, use temp. array to compute vertical transport
641       in flux-form momentum pkg. => change results of few test-exp.
642      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
643                        lab_sea, natl_box & plume_on_slope
644    
645    checkpoint48
646    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
647    
648    checkpoint47j_post
649    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
650    o moved adexch from forward_step to addummy_in_stepping
651    o added exch in ctrl_map_...
652    o aveFreq.=0. at end of cost_final to avoid overwrite in
653      reverse checkpointing loop
654    o Yet more changes in gmredi:
655      * adgmredi_calc_tensor
656        avoiding all recomputation of gmredi_slope_limit
657      * adgmredi_x/y/rtransport
658        added flag for excessive storing to avoid recomp. of
659        u/v/rtans, dTdx/y/z
660        -> this is not really necessary and very memory-consuming
661      * adgmredi_slope_psi:
662        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
663      * gmredi_slope_limit
664        re-activated full calculation of taperfct for case 'ac02'
665    o updating verification/ adjoints of carbon, global_ocean.90x40x15
666    
667    checkpoint47i_post
668    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
669    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
670      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
671    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
672    o gmredi: fix few bugs.
673    
674    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
675    This will be a good checkpoint to plug into the ecco-branch.
676    o few modif.'s to get latest version adjointed
677      (mainly kick out code in ini_linear_phisurf)
678    o modif's to run adjoint with exactConserv
679    o case GM_BOLUS_ADVEC should be cleaned
680      S/R gmredi_slope_psi should be cleaned
681    o verification/carbon now has exactConserv=.TRUE.
682    
683    checkpoint47g_post
684    o time-average AIM output: becomes independent from statvars time-average
685      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
686    o After TAF bug fix:
687      Tested adjoint of gmredi package.
688      Tests were done with checkpoint47 rather than with latest
689      checkpoint47f_post since the latter is broken for the adjoint
690      verification/carbon/ contains both ADM and TLM gradient checks.
691    Here they are, before they get changed/lost/stolen.
692    Mostly modif.'s to fix numerical sensitivities.
693    Gradient checks OK for
694    - GM_taper_scheme:
695      * clipping
696      * ac02
697      * linear
698      * glw91
699      * dm95
700      * ldd97
701    - GMREDI_OPTIONS:
702      * GM_VISBECK_VARIABLE_K
703      * GM_NON_UNITY_DIAGONAL
704      * GM_EXTRA_DIAGONAL
705      * GM_BOLUS_ADVEC
706    in conjunction with data.gmredi parameters to be checked in
707    in a few minutes under verification/carbon/code/
708    
709    checkpoint47f_post
710    Merging from release1_p10:
711    o modifications for using pkg/exf with pkg/seaice
712      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
713        and SEAICE_EXTERNAL_FLUXES
714      - pkg/exf CPP options EXF_READ_EVAP and
715        EXF_NO_BULK_COMPUTATIONS
716      - usage examples are Experiments 8 and 9 in
717        verification/lab_sea/README
718      - verification/lab_sea default experiment now uses
719        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
720    
721    checkpoint47e_post
722    o created a tag prior to creating a branch
723    
724    checkpoint47d_post
725    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
726      at the bottom boundary had an erroneous half slip boundary condition
727    o added bottom drag and no slip boundary condition capabilities to
728      oceanic pressure coordinates code
729    o added new verification experiment global_ocean_pressure, this experiment is
730      also described in the tutorial section of the manual
731    checkpoint47d_pre
732    
733    checkpoint47c_post
734    o Added a verification experiment for a global cubed-sphere ocean run
735      -  verification/global_ocean.cubed32x32x30
736      -  uses pkg/therm_seaice and pkg/bulk_forcing
737    
738    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
739    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
740      when using P-coordinate; only implemented for atmospheric config.
741    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
742      NOTES: requires option NONLIN_FRSURF to be "#define".
743    o update advect_xz/results/output.txt (left from checkpoint44g_post)
744    
745    checkpoint47b_post
746    Merging from release1_p9:
747    o pkg/seaice
748      - removed GOTO's and added taf directives
749      - double precision constants to reduce the g77 (Linux)
750        to F77 (SGI) differences reported in release1_p8
751    o tools/genmake
752      - added SGI options
753    o verification/testscript
754      - updated to that of checkpoint47a_post
755    o verification/global_ocean.90x40x15/input/eedata
756      - modified for SGI f77 compatibility
757    o verification/lab_sea
758      - added description of sea-ice model
759      - added missing matlab routines
760      - added test of thermodynamics parallelization
761    
762    checkpoint47a_post
763    o new pkg: aim_v23
764     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
765       for now, keep the same surface forcing as before.
766     - Part-Cell implemented into AIM; check that Heat & Water are conserved
767     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
768     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
769    o add diagnostic of surface correction term in monitor output
770    
771    o bulk_force and therm_seaice
772    - Two packages:  bulk_force (Bulk forcing)
773      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
774    - Earlier integration from Stephaine Dutkiewicz
775      and Patrick Heimbach.
776    - Two ifdef statements for compile time,
777       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
778    
779    checkpoint47
780    differentiable version of checkpoint46n_post
781    o bug fix in quasihydrostaticterms
782    o * "clean" adjoint code (in terms of extensive recomputations)
783        can now be obtained for all GMREDI options (i.e. for
784        - GM_VISBECK_VARIABLE_K
785        - GM_NON_UNITY_DIAGONAL
786        - GM_EXTRA_DIAGONAL
787        - GM_BOLUS_ADVEC )
788      * However, wrong gradient check problem remains unsolved.
789      * New CPP options have been introduced for different
790        tapering schemes
791    o external_fields_load now part of differentiation list
792    o pressure needs multiple storing;
793      would be nice to have store_pressure at beginning or
794      end of forward_step, e.g. by having phiHyd global (5-dim.)
795      (NB: pressure is needed for certain cases in find_rho,
796      which is also invoked through convective_adjustment).
797    o recomputations in find_rho for cases
798     'JMD95'/'UNESCO' or 'MDJWF' are OK.
799    o #define ATMOSPHERIC_LOADING should be differentiable
800    o ini_forcing shifted to begining of initialise_varia
801    o Incorporating QNVS line search routines into MITgcm
802      (this is separate code, and therefore not under pkg)
803      lsopt/, optim/
804    o Updated verification/carbon/
805      - #define GM_VISBECK_VARIABLE_K
806      - GM_taper_scheme    = 'ldd97'    
807    
808    checkpoint46n_post
809    Merging from release1_p8:
810    o verification/natl_box:
811      updating new external_fields_load routine
812    o New package: pkg/seaice
813      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
814      The sea-ice code is based on Hibler (1979-1980).
815      Two sea-ice dynamic solvers, ADI and LSR, are included.
816      In addition to computing prognostic sea-ice variables and diagnosing
817      the forcing/external data fields that drive the ocean model,
818      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
819      The implied surface heat flux is then stored in variable
820      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
821      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
822      non-local transport term.  Because this call precedes model
823      thermodynamics, temperature under sea-ice may not be "exactly" at
824      the freezing point by the time theta is dumped or time-averaged.
825      N.B.: fairly large differences in accuracy occur across
826            different platforms/compilers; comparison between
827            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
828            generated output gives:
829       T           S           U           V
830      C D M    c        m  s        m  s        m  s        m  s
831      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
832      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
833      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
834    
835      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
836    o GAD:
837      - generated new common blocks to account for call of
838        same gad routines with differing traceridentities
839        (needed to modify tracerIdentity indices in GAD.h)
840      - generated separate common blocks for case useCubedSphereExchange
841        (Department of Futurology)
842      - parameter lists to gmredi_?transport: added tracerIdentity
843      - added new key indices to tamc.h
844    o external_fields_load:
845      - added this routine to TAF list
846      - needed to make some common blocks global and additional storing
847        along the same lines as exf package (checkpoint_lev?_directives.h)
848    o exf:
849      updated external forcing package
850      - bug fixes carried over from ecco-branch
851        (missing OBCS_OPTIONS.h in two routines)
852      - enable easy to use "no forcing".
853      - added exf I/O for atmospheric loading
854      - added exf I/O for runoff data
855      - transfered scaling between exf <-> MITgcm to exf namelist
856    o Adding new verification experiment global_with_exf.
857      This verification experiment is almost identical to the
858      global_ocean.90x40x15 experiment, except that it uses
859      the exf (and cal) package instead of the
860      external_fields_load routine (cf README file).
861    
862    checkpoint46m_post
863    o modified testscript to return -- when there are no lines of "%MON" output
864    o added new flag "quasiHydrostatic" for QH mode
865      and new routine quasihydrostaticterms()
866    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
867      New routine: mom_u_coriolis_nh()
868    o fixed sign of non-hydrostatic metric terms in u and v equations.
869      Depend on correct sign of gravitySign.
870    o added work.pc* to .cvsignore in aim directories using ifc
871    o introduced flag for controllin non-hydrostatic metric terms
872    o removed gravitySign from PARM04
873    o switched to g77/ifc from pgf77 in aim experiments
874    
875    checkpoint46l_post
876    o made convective adjustment work with pressure coordinates:
877     - changed the direction of k-loop in convective_adjustment.F for the
878       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
879     - adjusted the reference pressure k-index in convective_adjustment.F
880     - adjusted the convection condition in convect.F (in analogy to
881       calc_ivdc.F)
882     - convective_adjustment no longer computes anything on the halos
883     - removed the warnings about negative salinity from find_rho.F and
884       find_alpha.F; instead the new routine look_for_neg_salinity, called
885       at the beginning of find_rho, find_alpha, and find_beta, does a
886       check of the entire slice, if CPP-option
887       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
888    checkpoint46l_pre
889    
890    checkpoint46k_post
891    o fixed the verification/global_ocean.90x40x15 experiment:
892     - new bathymetry (the world according to A., JMC, and M.)
893     - new initial fields and forcing fields (*.bin files)
894     - new POLY3.COEFFS (for the next release one should switch to a full
895       equation of state: JMD95P or MDJWF)
896     - fixed several errors and redundancies in the data file
897     - experiment uses looped cells
898     - added matlab directory with diagnostic scripts for plotting of output
899    
900    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
901     - read AIM physics parameters from a file (data.aimphys)
902     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
903    
904    checkpoint46j_post
905    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
906    o move wVel computation at the end of the time step, in S/R integr_continuity
907    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
908    o update timeave pkg for wVel diagnostic.
909    checkpoint46j_pre
910    
911    checkpoint46i_post
912    o Clean up AIM package (and keep the results unchanged):
913      include CPP_OPTION and use IMPLICT NONE in all routines ;
914      declare all the variables _RL ; use _d 0 for all numerical constants.
915      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
916    
917    checkpoint46h_post
918    o cleaned up the use of rhoNil and rhoConst.
919      - rhoNil should only appear in the LINEAR equation of state, everywhere
920        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
921        and the dynamical equations are all divided by rhoConst
922    o introduced new parameter rhoConstFresh, a reference density of fresh
923      water, to remove the fresh water flux's dependence on rhoNil. The default
924      value is 999.8 kg/m^3
925    o cleanup up external_forcing.F and external_forcing_surf.F
926      - can now be used by both OCEANIC and OCEANICP
927    checkpoint46h_pre
928    
929     Added code to convert surface volume flux (fresh water) into
930     a mass flux when using P coordinates in the ocean (OCEANICP).
931     Note: It assumes you have set rho0=rhoConst=density of fresh water.
932    
933    checkpoint46g_post
934    o Include a new diagnostic variable phiHydLow for the ocean model
935      - in z-coordinates, it is the bottom pressure anomaly
936      - in p-coordinates, it is the sea surface elevation
937      - in both cases, these variable have global drift, reflecting the mass
938        drift in z-coordinates and the volume drift in p-coordinates
939      - included time averaging for phiHydLow, be aware of the drift!
940    o depth-dependent computation of Bo_surf for pressure coordinates
941      in the ocean (buoyancyRelation='OCEANICP')
942      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
943        Theta, Salinity, and Pressure in the parameter list. This routine is
944        presently contained in find_rho.F. This routine does not give the
945        correct density for 'POLY3', which would be a z-dependent reference
946        density.
947    o cleaned up find_rho
948      - removed obsolete 'eqn' from the parameter list.
949    o added two new verification experiments: gop and goz
950      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
951    checkpoint46g_pre
952    
953    checkpoint46f_post
954    o Enable tangent linear (forward mode) gradient checks:
955      - extended active file handling to g_... files
956      - added TANGENT_SIMULATION to theSimulationMode
957      - extended grdchk package accordingly
958    o added tangent linear setup in verification/carbon/code_ftl
959    o added adjoint setup in verification/front_relax/code_ad
960    
961    checkpoint46e_post
962    o Added new equation of state -> MDJWF
963      - EOS of McDougall et al., 2002, JAOT, submitted
964      - caveat: the equation of state is only valid for a smaller (more
965        realistic?) range of values than JMD95P/Z and UNESCO
966      - added masks to the calculation of pressure in store_pressure
967      - added more check values for density in check_eos (ini_eos.F), some of
968        the old check values are out of the range of the MDJWF-eos, so don't
969        expect perfect matches for those
970    checkpoint46e_pre
971    
972    checkpoint46d_post
973    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
974      'OCEANICP', also initialised field pressure correctly in ini_eos in the
975      case of pressure coordinates. eosType='JMD95Z' in
976      combination with buoyancyRelation='OCEANICP' now causes an error.
977    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
978      in find_alpha/beta.
979    checkpoint46d_pre
980    
981    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
982      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
983    
984    checkpoint46c_post
985    o Changes necessary for ocean in p-coordinates
986     -  Added new buoyancy relation = 'OCEANICP'
987     -  Added new parameters = gravitySign (this used to be contained inside
988        the factor dRdZ which I added when we first switched to R coordinates).
989     X GM/Redi is not compatible (yet)
990     X bottom drag and no-slip need to be debugged.
991    checkpoint46c_pre
992    
993    checkpoint46b_post
994    o Added new equation of state -> JMD95Z and JMD95P
995      - EOS of Jackett and McDougall, 1995, JAOT
996      - moved all EOS parameters into EOS.h
997      - new routines ini_eos.F, store_pressure.F
998    o Added UNESCO EOS, but not recommended because it requires
999      in-situ temperature (see JMD95)
1000    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1001      unesco.f to be used with POLY3
1002    checkpoint46b_pre
1003    
1004    checkpoint46a_post
1005    o Added (atmospheric) pressure loading
1006      - new field in FFIELDS.h, etc...
1007      - new cpp flag ATMOSPHERIC_LOADING
1008    o Changed hFacC to _hFacC in calc_phi_hyd.F
1009    o Added SHORTWAVE_HEATING to some files for consistency
1010    checkpoint46a_pre
1011    
1012    checkpoint46
1013    further merges from release1_p5
1014    o new ctrl package
1015      - adopted from ECCO environment to enable optimization
1016      - added Eliassen Palm fluxes to controls
1017    o added Eliassen Palm flux controls to gradient check package
1018    o cost package
1019      - Compatible with new ctrl package
1020      - added Eliassen Palm cost hooks
1021      - modif's of existing cost functions
1022    o Adjoint-related bug fixes in kpp:
1023      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1024      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1025    o autodiff package
1026      - flow directives:
1027        + new for S/R do_the_model_io
1028        + enhanced for S/R checkpoint
1029        + new gmredi.flow
1030      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1031        disable adcommon.h/g_common.h by default.
1032      - fixed problem for adjoint of global_max
1033    o modified verification/carbon/
1034    o New setup for adjoint of global_ocean
1035    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1036    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1037    o incorporated hooks for sponge layer code (external_forcing.F)
1038    
1039    checkpoint45d_post
1040    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1041    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1042      (affects plume_on_slope "cg2d" output)
1043    o add new parameter deltaTfreesurf for free-surface time stepping
1044    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1045    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1046    o change phiMin in exp1 (to agree with documentation)
1047    o add new flags:
1048     - T,S forcing inside/outside Adams-Bashforth
1049     - turn off temp,salt advection and/or forcing
1050     - for each tracer, define internal flag for multiDimAdvection & A-B
1051    o monitor: change definition of KE to check conservation of Energy
1052    
1053    checkpoint45c_post
1054    o Removed f90 comments ("!")
1055    o Modified initialisations to enable exf package for MITgcm
1056      (without invoking ECCO_PACKAGE).
1057    o modifications to gradient check package (Martin Losch)
1058      - enable centered differences
1059      - modified format of standard output
1060    
1061    checkpoint45b_post
1062    o cleaned exchange calls in cg2d
1063    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1064    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1065      to configure barotropic setup (Martin Losch)
1066    o moved some initialisations within bi,bj loop in dynamics
1067      (TAF flow dependency)
1068    o in initialise_varia, moved call packages_init_variables
1069      before convective_adjustment_init
1070      (corresponding adjustment of TAF tape initialisation).
1071    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1072    
1073    checkpoint45a_post
1074    o compute Rho over the whole domain (extend iMin,jMin indices)
1075    o specific exchange for X-slice domain (case Ny=1)
1076    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1077    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1078    
1079    checkpoint44h_post = checkpoint45
1080    o Fix to restore differentiability:
1081      place at which packages_init_variables is called in
1082      initialise_varia is crucial for reverse control flow.
1083    o modifications in GMRedi to enable stable adjoint
1084      (corresponding modif's in thermodynamics, dynamics)
1085    o added missing hook for sponge layer code in external_forcing
1086    o modified test cost functions
1087    o storing in gad_advection (plus removal of write(0,*)!
1088    o missing headers TR1.h added in convective_adjustment routines
1089    o errorMessageUnit set non-equal zero in eeboot
1090      (conflict on some platforms, e.g. IBM SP3)
1091    o modified carbon verif.
1092    
1093    checkpoint44h_pre
1094    o vertical grid option: allow to put the Interface at the middle between
1095      2 cell-centers ; replace delZ in pkg/kpp by drF.
1096    o GM Advective form: Tracers are advected using the residual transport (=
1097      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1098    
1099    checkpoint44g_post
1100    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1101      results) ; ifdef missing in thermodynamics.F
1102    
1103    checkpoint44f_pre,checkpoint44f_post
1104    o added PTRACERS package
1105      This allows an arbitrary number of passive tracers to be integrated
1106      forward simultaneously with the dynamicaly model.
1107      + Implemented so far:
1108        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1109        - I/O and checkpointing
1110        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1111      + Not implemented so far:
1112        - KPP
1113        - OBCS
1114      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1115        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1116        line in data.pkg.
1117      + This package is disabled by default since it increases storage.
1118    
1119    
1120    o testscript: added -cleanup option
1121    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1122                 b) enable to filter 2D fields.
1123    
1124    checkpoint44e_pre,post
1125    o re-wrote convective adjustment to use pre-calculated weights
1126      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1127      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1128      Original calls to convect() still in place.
1129    
1130    chkpt44d_pre,post
1131    o added missing EXCLUDE_MONITOR flags
1132    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1133      (incompatible typ in MIN/MAX expressions caused problems
1134      on IBM SP3)
1135    o in genmake added variable MAKEDEPEND
1136      plus resetting for case SunOS
1137    o added timer_stats.c routine for IBM SP3
1138    o removed variables in dynamics
1139    !!! I forgot to create tag chkpt44d_pre !!!
1140    !!! But chkpt44d_pre = chkpt44c_post    !!!
1141    
1142    o real fresh water flux implemented with non-linear free-surface.
1143    
1144    chkpt44c_pre,post
1145    o few fix (mask in shap_s2, EmPmR in external_field_load,
1146      USE_NATURAL_BCS in solve_for_P);
1147    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1148    
1149    checkpoint44b_pre/_post
1150    o merge of relevant stuff from the ecco-branch:
1151      - genmake: removed $S64 overwrite for case SunOS
1152      - pkg/exf: update and corrections for field swapping and obcs
1153      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1154                  harmonized between ECCO and MITgcm
1155      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1156                      updated checkpointing_lev... lists for obcs
1157      - model/src: minor changes in forward_step, plot_field
1158                   added directive for divided adjoint in the_main_loop
1159      - pkg/mdsio: added mdsio_gl_slice
1160    
1161    o check parameters & config (chkpt44a_pre,post)
1162    o OBC and NonLin_FrSurf.
1163    
1164    checkpoint44
1165    o fix bug in mom_vi_del2uv
1166    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1167    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1168    o update AIM experiments (NCEP input files)
1169    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1170    o added some stuff for AD
1171    
1172    checkpoint43
1173    o added two new advection tests
1174    o added global 4x4 degree ocean test
1175    o added test of H&S94 with free surface on cube
1176    o some final mods for gradient check, adjoint,...
1177    
1178    checkpoint42
1179      Fixed AD-related problems:
1180    o Store directives up-to-date with re-arranged Adams-Bashforth
1181      (mainly thermodynamics.F)
1182    o New store directives for multi-dim. advection schemes
1183      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1184      * new common block and key passkey
1185      (mainly gad_advection.F)
1186    o Modified store directives for split of dynamics/thermodynamics
1187      for the case ALLOW_KPP
1188    o Cleaned argument list for timestep_tracer.F
1189    
1190    checkpoint41
1191    o re-formatted/added comments in prologues of key subroutines
1192      to work with protex
1193    
1194    checkpoint40
1195    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1196    o added FLT (floats) package from Arne along with demo. experiment
1197    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1198      implementation of forward-in-time forcing terms
1199    o more mods for non-linear free-surface including new variable
1200    o modified multi-dim method to work on cube
1201    o bug fix in KPP (from DM)
1202    
1203    checkpoint40pre9
1204    o added DST advection schemes
1205    o fix MPI bug on SGI's
1206    o modifications for non-linear free-surface
1207    o fixed conditionals for fixed flow/passive tracer only mode
1208    o added tension/strain form of stress tensor
1209    o changes to commenting of arguments for TAF/TAMC
1210    o added/updated many matlab scripts
1211    o added multi-dimensional advection method for tracers
1212      
1213    checkpoint40pre8
1214    o new package rw/
1215      Added method for dumping intermediate local arrays:
1216      mdsio_writetile - same as mdsio_writefield except works from inside
1217                        bi,bj loop
1218      mdsio_writelocal - same as mdsio_writetile except works for local
1219                         arrays
1220      write_local_r? - higher-level wrapper for mdsio_writelocal
1221      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1222      Example given at end of mom_vecinv.F that dumps some local arrays.
1223    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1224      control flux-form versus vector invariant code.
1225      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1226      or genmake -DISABLE ...
1227    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1228      (additional storing is now needed for case vecinv;
1229      currently nothing implemented to switch this storing off
1230      in case fluxform is used since no CPP flag available).
1231    
1232    checkpoint40pre7
1233    o bug fix in dynamics.F
1234      calc_viscosity called before k=1,Nr loop.
1235    o added some #ifdef's ALLOW_PASSIVE_TRACER
1236    o cleaned initialisations in ctrl_map_ini
1237      related to TAF
1238    
1239    checkpoint40pre6
1240    o split dynamics into thermodynamics & dynamics
1241    o corresponding split of calc_diffusivity into
1242      calc_diffusivity, calc_viscosity
1243      (kpp_calc_diff, kpp_calc_visc).
1244    o Added diffkr, kapgm to control variables
1245    o bug fix in gmredi_slope_limit for ldd97
1246    
1247    checkpoint40pre5
1248    o proper initialization of Adams-Bashforth time stepping
1249      + uses forward step for very first step of model (iter=0)
1250    o re-generated *all* output since almost all output is modified by this
1251      change (sorry but we've been putting this one off for about 2 years)
1252      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1253        *not* regenerated since they are already out of date and I don't
1254        want to create the impression that they are suddenly working.
1255    o removed KAP stuff for DEC's
1256    o modified/added many .cvsignore files in */code and */input
1257    o added new expt "solid-body.cs-32x32x1"
1258      + this uses an alternative form of ini_curvilinear_grid.F which
1259        is not necessarily any better than the current one...
1260    
1261    checkpoint40pre4
1262    o added re-initialisations of utrans,vtrans,rtrans in
1263      calc_common_factors which are crucial for TAF.
1264    o extended iMin,jMin range for calc_common_factors,
1265      calc_diffusivity
1266    o added option ALLOW_PASSIVE_TRACER
1267    o a few minor updates and fixes
1268    
1269    checkpoint40pre3
1270    o created calc_gtr1.F for gad package
1271    o split the_main_loop and re-introduced forward_step
1272    o some recomputations of nIter0 for TAMC
1273    
1274    checkpoint40pre2
1275    o Updated to latest branch of AJA, JMC
1276    o Added gradient check package
1277    o Added routines for passive tracer handling
1278    o Added carbon sequestration sensitivity experiment
1279    
1280    checkpoint39
1281     o Modifications and fixes to support TAMC
1282       (mainly missing or wrong directives)
1283     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1284       in addummy_in_stepping
1285     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1286     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1287     o Included following packages:
1288       cal: calendar
1289       exf: external forcing
1290       ecco: essential routines to control use of cal, exf
1291             (NB: this is not the full ECCO environment)
1292     o disabled some packages by default in genmake
1293    
1294    checkpoint38
1295     o see notes_c37_adj.txt
1296     o corrected wrong layer index in external_forcing_t
1297     o replaced the_main_loop/forward_step by the_main_loop
1298     o removed forceoutput from write_state
1299       (replaced criteria for initial/final state)
1300     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1301    
1302    checkpoint37
1303     o mdsio.F routine split and packaged in pkg/mdsio
1304       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1305        used unless genmake -disable=mdsio)
1306     o allow a more precise surface-geopotential gradient for the atmosphere
1307       taking into account the change in space of Alpha (=1/rho) at the surface.
1308     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1309       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1310     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1311       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1312       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1313     o Time-Average diagnostics defined as a pseudo package "timeave".
1314     o pickup files : old pickup (before c35) did not work with new code (c35
1315       and after) unless activating 2 commented lines in initialise-varia.
1316     o Non-Hydrostatic pickup file Pb fixed.
1317     o bug with Rigid-lid version (since c35) fixed.  
1318    
1319    checkpoint36
1320     o implement Crank-Nickelson barotropic time-stepping
1321     o recover Time-Average diagnostics
1322     o fix Pb in checkpoint (PR#19)
1323     o AIM become a standard package ; clean unused CPP_kees
1324    
1325    checkpoint35
1326     o subtantial rewrite of dynamics.f
1327     o allows staggered time-stepping
1328     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1329     o added bottom drag (linear + quadratic)
1330    
1331    checkpoint34
1332     o Modified exchange routines for correct reverse simulation.
1333     o Added verification output to comply with bug fix in impldiff.F
1334       as of c33 (exp2, natl_box).
1335     o Corrected store directives in dynamics.F
1336     o Corrected array boundaries in impldiff.F
1337     o Corrected array dimensions in gmredi.
1338       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1339     o Added routine GLOBAL_SUM_INT to global_sum.F
1340     o Added mdsio_gl.F for ECCO purposes.
1341    
1342    checkpoint33
1343     o Fixed bug in lower BC in impldiff.F
1344     o Fixed confusion about units of forcing arrays in FFIELDS.h
1345       namely Fu,Fv,Qnet,Qsw,EmPmR:
1346       - Removed verification/natl_box/code/external_fields_scale.F
1347         (did not differ from that in model/src)
1348       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1349         (see FFIELDS.h for description)
1350       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1351         kpp_calc.F and kpp_transport_t.F
1352       - Removed model/src/external_fields_scale.F and calls to it
1353       - verification/natl_box uses flux data with "atmospheric" sign so
1354         a special version of external_fields_load.F is used to
1355         change the data as it's read in. This way, the arrays
1356         have the right units and signs at all times tha a user could
1357         possibly use them.
1358     o Corrected genmake to delete a temporary file during configuration
1359    
1360    checkpoint32
1361     o Scaling of forcing fields moved from external_forcing.F to
1362       external_fields_scale.F, called directly after loading fields.
1363     o Surface relaxation terms added to surface tendency fields in
1364       extra subroutine.
1365     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1366       fields.
1367     o Changes in GMRedi to comply with packaging structure.
1368     o Modifications and bug fixes in KPP package.
1369     o Verification experiment for KPP added (verification/nat_box/)
1370    
1371    checkpoint31
1372     o Packages interface brought in line with defined standard
1373       -> new routines packages_...F
1374       -> changes in initialise_fixed.F, initialise_varia.F
1375       -> enables initialisation interface for ECCO package
1376     o Rescaling of external forcing fields immediately after read
1377       (removed from external_forcing.F)
1378       -> new: surface_fields_scale.F
1379       -> affects ini_foorcing.F, external_fields_load.F
1380     o Computation of surface tendencies before tendency updates.
1381       -> new: external_forcing_surf.F
1382     o Change of variable names useGMRedi, useKPP, useECCO
1383     o Further changes in dynamics.F, impldiff.F for TAMC
1384     o Tested for experiments 0, 2, 4.
1385       - not yet tested for GMRedi.
1386       - not yet tested for KPP.
1387    
1388    checkpoint30
1389     o Updates for OBCs
1390     o New experiment for test OBCs (internal_wave)
1391     o New output.txt in verification/exp4/results/
1392     o Updates for KPP: calculation of viscosity corrected, new variables
1393       kpp_dumpFreq and kpp_taveFreq
1394     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1395       and entry for T90 in genmake
1396    
1397    checkpoint29
1398     o packaged KPP and GM/Redi
1399    
1400    checkpoint28
1401     o Corrected initialization of hFacMin for difference vertical coordinates
1402     o Modified calculation of partial cell thickness to more robust algorithm
1403     o config_summary.F: replaced write_1D_... by write_0D_...
1404       read_write.F: added subroutines write_0D_...
1405     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1406       included some initialisations required for TAMC.
1407     o routine calc_isoslopes: modified sqrt computation to make it
1408       differentiable for zero argument.
1409     o routines dynamics, impldiff:
1410       included store directives and tape key computations required for TAMC.
1411     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1412    
1413    checkpoint27
1414     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1415       formulation works properly with variable resolution.
1416     o restructured the calling tree between the_model_main() and dynamics()
1417     o split initialise() into initialise_fixed() and initialise_varia()
1418     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1419       in new routine ini_psurf()
1420    
1421    checkpoint26
1422     o moved some #ifdef in optional routines to encompass everything
1423       except the argument declarations. This was using up some memory.
1424     o fixed macros like _ADT to work with both versions of Linux cpp
1425     o cleaned up some unused and uninitialized variables
1426       (helps when debugging with strict compile options)
1427     o split up CPP_EEOPTIONS.h into options and macros
1428       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1429     o patch for 2 processor JAM mode
1430    
1431    checkpoint25
1432     o updates for OBCs and NH
1433     o dramatically reduced memory usage
1434     o added "JAM" routines for use on Artic network
1435     o parameterization of convection by implicit vertical diffusion
1436     o added a diagnostic of convective index
1437     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1438       (this is was partly for OBCs and NH but also in anticipation of
1439        an explicit free-surface option)
1440     o initial state input files for U and V
1441    
1442    checkpoint24
1443     o Removed some spurious "REAL"s
1444     o Updated KPP to latest version from JPL
1445     o Added a COS(latitude) in horizontal viscosity
1446    
1447    checkpoint23
1448     o Added del^4 diffusion for salt and temperature
1449     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1450    
1451    checkpoint22
1452     o Made many small changes: implicit none, format(i5), etc...
1453     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1454    
1455    checkpoint21
1456     o Introduced new I/O package that supports direct-access records (mdsio.F)
1457     o Split-up mid-level I/O routines
1458     o Updated input data for experiments 0,1,2,4 and 5
1459     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1460    
1461    checkpoint20
1462     o Tidied up open-boundaries some more
1463     o Added non-hydrostatic code
1464     o Fixed some input data
1465     o Modified MPI start-up to work in "coupled" context.
1466    
1467    checkpoint19
1468     o Tidied up directory structure for verification experiments.
1469     o Added new code for open boundaries.
1470     o Corrected advective terms near boundaries.
1471     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1472     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1473     o Split default parameters out of ini_parms.F into set_defaults.F.
1474    
1475    checkpoint18
1476     o Further changes for optional code generation with
1477       CPP - ugh!
1478    
1479    checkpoint17
1480     o Beginning to incorporating modularity
1481       for supporting atmos. and ocean configs.
1482     o Small changes for TAMC complinace
1483     o New ultra simple test case. Barotropic box
1484       configuration "exp0".
1485    
1486    checkpoint16
1487     o Minor changes to exchange routines to support
1488       accumulation in reverse mode. Adjoint of an
1489       assignment is an addition.
1490     o Changes to support compilation by TAMC (LR(1)
1491       syntax) and by g77 under Linux ( 72 character
1492       limit ).
1493    
1494    checkpoint15
1495     Rewrote exchange routines to allow
1496     o General tile <-> tile connectivity.
1497     o TAMC reverse mode flag ( is this really needed? )
1498     o Variable width overlap and exchange region widths.
1499     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1500       shmput/shmget, VIA, SYSV shmem and every other cool
1501       communication method.
1502    
1503  checkpoint14  checkpoint14
1504   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
1505   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.

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