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revision 1.141 by heimbach, Fri Feb 28 05:21:22 2003 UTC revision 1.271 by heimbach, Tue Mar 23 19:47:05 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    o MNC:
6      - make myThid the last argument for all subroutines
7      - new default for the grid files: NO halos
8      - add useMNC and other run-time flags
9      - separate per-file-group handling of the unlimited dimension
10      - early initialization of MNC w/ flags read at the eeboot stage
11        and lookup tables set in initialize_fixed
12      - write all MNC output to a freshly-created directory
13    o thermodynamics sea-ice (thsice) is now tested with testreport.
14    o test exp. advect_cs: use the standard cs32 grid ; update output.
15    o Added functionality to grdchk:
16      pick global i,j,k position (or nearest wet) where to perform check.
17    
18    checkpoint52l_post
19    o new land formulation:
20      a) use ground enthalpy as prognostic variable to ensure exact
21         energy conservation.
22      b) account for water temperature and for latent heat of freezing
23         in all processes (rain, run-off, ground storage)
24      c) compute surface and ground temperature implicitly.
25    o aim_v23 modification for new land model:
26      a) Treat separately land / ocean / sea-ice surface fluxes
27         to allow implicit computation of land & sea-ice surface temp.
28      b) add snow precipitation.
29    checkpoint52l_pre
30    
31    o fix problem (when 1 tile is empty) in min/max monitor.
32    o fix bug in timeAve (u,vZetatave in common block)
33    o no restoring terms under ice for pkg/seaice
34    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
35    o bug fix for pkg/seaice pickups
36    o change MNC call locations and add coordinate attributes
37    o mask vorticity at the corner ; affects global_ocean.cs output
38    o fix ini_curvilinear_grid ; test CS experiments with mpi
39    o aim.5l_cs: modify sea-ice fraction input file ; update output
40    o exf: Adding simple range check routine for exf fields after read
41    
42    checkpoint52k_post
43    o removed top-level directory "diags"
44      - we migrated these functions to pkg/timeave a long time ago
45    o fixed bug introduced in pkg/monitor
46    o accuracy ctrlprec = 32 insuffient for gradient checks using
47      averaged fields (I/O via cost_averages)
48      -> use ctrl.h in active_file*.F to control I/O precision.
49    o paramter list of CALL ADTHE_MAIN_LOOP
50    o added initial do_the_model_io to ecco
51    o set all ...Freq to zero after cost_final
52      taveFreq, dumpFreq, pChkptFreq
53    o MAIN and ECCO differentiability restored
54    
55    checkpoint52j_post
56    o fix nchklev in tamc.h for global_ocean...
57    o Bringing flow and store directives up-to-date
58    o Really weird thing!
59      call do_the_model_io from the_main_loop with parameters
60      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
61      TAF places a faulty re-call of initialise_varia
62      after cost_final call which should not be there!
63    checkpoint52j_pre
64    
65    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
66      error messages
67    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
68    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
69      debug output
70    o modfied mdsio_writefield.F to handle non-global files under exch2
71    o update AIM Cubed-Sphere exp (aim.5l_cs):
72      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
73    o update AIM Equatorial Channel exp:
74      use standard aim_v23 pkg and change the SST fields to be more realistic.
75    o globalFile now works with exch2
76    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
77      mon_vort3.F to make exch2 friendly with >1 tile per cube face
78    o limit timeave output for hi-res integrations
79    
80    checkpoint52i_post
81    o removed CPP_EEOPTIONS.h from verification/*/code
82    o updated the tiling for global_ocean_pressure
83    checkpoint52i_pre
84    
85    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
86      the old pkg/aim).
87    
88    checkpoint52h_pre
89    o shortened offending lines in exch2_send_rx?.template
90    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
91    o genmake2: add build & execute test for NetCDF code
92    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
93      old grid files, moved CPP_EEMACROS.h to pkg/exch2
94    o added useSingleCPUIO flag to monitor.F and mon_out.F
95    o added temporary hack for sea-ice dynamics on the cube:
96      metric terms are ignored and it is assumed that
97      there is no sea-ice on cube faces 1, 2, 4, and 5.
98    
99    checkpoint52f_post
100    o added exch2 cube routines to pkg/exch2
101    o modified hs94.cs-32x32x5 to use it
102    o added new grid files to hs94.cs-32x32x5
103    checkpoint52f_pre
104    
105    checkpoint52e_post
106    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
107      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
108    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
109      to work with implicit vertical advection and AB ;
110    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
111    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
112     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
113    checkpoint52e_pre
114    
115    o fix bug in impldiff when Nr=1 or Nr=2.
116    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
117    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
118    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
119      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
120    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
121    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
122    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
123    
124    checkpoint52d_post
125    o re-tiled many expts to allow comparison in multi-processor mode
126      - updated output accordingly
127      - changed hs94.128x64x5 to use intial T from file rather than use the
128        random number generator
129    o add infrastructure in model routines for fizhi and gridalt packages
130    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
131    o changes to permit hi-res, cubed-sphere, configuration
132      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
133      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
134      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
135        of surface winds for the cube
136      (A verification experiment, based on global_ocean.cs32x15, but with
137       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
138       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
139       complete with example surface forcing files and matlab scripts to look
140       at the output and compare it with that of global_ocean.cs32x15.)
141    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
142       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
143       to conform to the common rule.
144    o check-in the first version of the coupler + interfaces for multi-components
145       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
146       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
147       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
148       - ocean and atmos. share the same horizontal grid (no interpolation).
149       - exchanges between component and coupler is done in forward_step
150    o new verification experiment, cpl_aim+ocn:
151       coupled ocean - AIM atmosphere on cs32 grid.
152    
153    checkpoint52d_pre
154    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
155    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
156    
157    checkpoint52c_post
158    o Fixing OPTIONS files for use of exf:
159      - ALLOW_ECCO not needed
160      - ECCO_CPPOPTIONS.h should not be included from
161        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
162        as has been the case in the past
163      - All cal/exf related options are currently set in
164        single header file. Should remain so until we
165        agree on a consistent new policy.
166    o Removed all CPP options for cal package.
167      cal has no more CPP options.
168    o modified STOREs in GAD_ADVECTION
169    o corrected key comp. for passkey
170    
171    checkpoint52b_post
172    o new version: "thsice" of thermodynamic sea-ice pkg:
173     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
174     - modify fluxes but do not change theta directly;
175     - light cleaning of bulk_force pkg (still needed with thsice).
176     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
177       + output_thsice.txt to test thsice & bulk_force pkgs.
178    o put back grid & coriolis monitor output.
179    checkpoint52b_pre
180    
181    o call "do_the_model_io" at the beginning (=> dump initial state)
182    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
183    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
184      (need info on NUMBER_OF_PTRACERS)
185    o missing PTRACERS headers in some routines
186    o default tamc.h in pkg/autodiff supposed to crash
187      to ensure proper customization
188    
189    checkpoint52a_post
190    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
191      - moved surfaceTendencyTice from pkg/seaice to main code
192      - subroutine FREEZE_SURFACE now limits only surface temperature
193        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
194        => new output.txt for global_ocean.cs32x15 & global_with_exf
195      - keep the old version of FREEZE for backward compatibility;
196        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
197      - corresponding modifs for TAF directives
198    o added surface flux output variables to TIMEAVE_STATVARS
199    o time-averaged output for pkg/ptracers
200    o fix problem with ECCO-related divided adjoint
201      snapshot file was missing some ad-variables,
202      but no warning issued by TAF
203    
204    checkpoint52a_pre
205    o some bug fixes for #undef REAL4_IS_SLOW
206    
207    checkpoint52 = ecco_c52_e35
208    o after testing adjoints of checkpoint51u_post
209    
210    checkpoint51u_post
211    o this is the post-merge tag of the ecco-branch
212      (needs another clean checkout and re-testing)
213    o various natl_box_adjoint configs and results
214      but no input fields
215    o obcs adjoint not yet merged!
216    o adding ECCO global 1x1 and 2x2 degree configs
217    o updated/extended some store directives for seaice
218    o pkg/ecco now containes ecco-specific part of cost function
219    o top level routines the_main_loop, forward_step
220      supersede those in model/src/
221      previous input data.cost now in data.ecco
222      (new namelist ecco_cost_nml)
223    o in ctrl/ cleaned some cross-dependencies and updated CPP options
224    
225    checkpoint51t_post
226    o this is the pre-merge tag of the ecco-branch
227    
228    checkpoint51s_post
229    o cleanup: removed various obsolete #define-s
230    o pkg/grdchk
231      - renamed 'ph-grd 3' to 'grad-res'
232      - merged from ecco-branch
233        (remaining bug fixes for obcs gradient checks)
234      - additional high-precision output for testreport
235        (grep for 'precision_grdchk_result')
236    
237    checkpoint51r_post
238    o cleaned up or removed CPP_OPTIONS.h files
239    o updated results for some of the tests to reflect the new
240      optfiles (-ieee: -O0 instead of -O3)
241    
242    checkpoint51q_post
243    o cd_code:
244      - moved cd_scheme.F -> cd_code_scheme.F
245      - separate read_checkpoint from cd_code_ini_vars.F
246      - separated cd_code part from write_checkpoint
247      - updated AD_SOURCE, generated .flow
248      - added CD_CODE_VARS.h to the_main_loop
249      - Moving cd_code specific store dir.s to pkg/cd_code
250    o ctrl package totally restructured
251      - pack/unpack now optional and decoupled from
252        xx_/adxx_ I/O
253      - ctrl_pack/unpack cleaned
254        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
255      - confined inclusion of AD_CONFIG.h to where necessary.
256    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
257    
258    checkpoint51p_post
259    o create initial cd_code package
260      - WARNING: the initialization of fields within packages
261        is broken because INI_FIELDS (where READ_CHECKPOINT is
262        called) is called *before* PACKAGES_INIT_VARIABLES.
263        This seems to be backwards since
264        1) its important to initially zero the entire field including
265           the "halo" region
266        2) zeroing needs to be done *before* reading pickup info
267           and the pickup call might or might not happen in any
268           particular run
269      - this needs an overhaul for R2
270    o cleanup verification/*/code/GMREDI_OPTIONS.h
271    o cleanup testreport
272    
273    checkpoint51o_post
274    o bringing AD-related verif's up to date with genmake2
275      - carbon/
276      - global_ocean.90x40x15/
277      - hs.94.1x64x5/
278      - (front_relax/ )
279    o (more) consistent directory structure for AD-related verif.'s
280    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
281    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
282    o bug fix in find_alpha.F for MDJWF:
283      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
284        change rho -> rho-rhoConst
285      - replace call find_rho to find_rhonum
286    o initialisation of rFlx extended to full array (required by TAF)
287      and shifted to thermodynamics
288    o removed PTRACERS.h in ptracers routine
289    o added surfacetendencyPtr to S/R parameter list pracers_forcing
290    o Correcting initialisations for fVerU, fVerV.
291    o helping TAF to recognize dependency on kUp for
292      fVerU, fVerV
293    o Replacing delZ by delR in pkg/ctrl/
294    checkpoint51o_pre
295    
296    o undid all of cp51 pending some cleanups and discussion
297    o added the [#include "AD_CONFIG.h"] statement to all files that need
298       it for adjoint/tl #defines
299     o re-worked the build logic in genmake2 to support AD_CONFIG.h
300     o removed tools/genmake since it no longer works
301    
302    checkpoint51n_post
303    o modifications to make FREEZE flux visible to pkg/kpp
304      - moved surfaceTendencyTice from pkg/seaice to main code
305      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
306      - subroutine FREEZE now limits only surface temperature
307        (this means new output.txt for global_ocean.90x40x15,
308         global_ocean.cs32x15, and global_with_exf)
309    o added surface flux output variables to TIMEAVE_STATVARS
310    
311    checkpoint51n_pre
312    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
313    o added [#include "AD_CONFIG.h"] to all files that use the following
314      defines:
315      - ALLOW_ADJOINT_RUN
316      - ALLOW_TANGENTLINEAR_RUN
317      - ALLOW_ECCO_OPTIMIZATION
318    
319    checkpoint51m_post
320    o incorporating changes to get TAMC/TAF working in genmake2
321      - added new TAMC/TAF targets to the Makefile
322      - various cleanups related to package handling
323      - these changes should have no impact on the forward model
324    
325    checkpoint51l_post
326    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
327     - faster algorithm for cal_addtime.F
328     - higher precision arithmetic, where needed
329     - pkg/exf *startdate variables changed from calendar date to
330       model integration time
331    
332    checkpoint51l_pre
333    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
334    o enable to apply restoring on S & T only in a latitude band.
335    o update output (external_forcing_surf modif. change truncation errors)
336       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
337    
338    checkpoint51k_post
339    o change default to: useNHMTerms=.FALSE.
340     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
341       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
342     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
343        exp1, ideal_2D_oce
344     - change data file of oceanic exp (leave the results unchanged for now)
345       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
346    o set gravitySign automatically according to the vertical coordinate used
347      (and change sign: back to "logical" value: +1 when R increases downward)
348    o added an include barrier to the default CPP_OPTIONS.h and
349      removed the #include "PACKAGES_CONFIG.h" from it
350    o fix a bug in mom_fluxform (from chk51j_post)
351    
352    checkpoint51j_post
353    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
354    o adjusted some flow directives (dynamics, thermodynamics)
355    o added cubed-sphere case to test cost function
356    o heckpoint_lev?_directives.h now include
357      pkg-specific directives, whenever those are enabled.
358    o Moving pkg-specific flow directives to corresponding pkg
359      Moving pkg-specific differentiation list to corresponding pkg
360      Moving pkg-specific checkpoint-lev storing to corresponding pkg
361      ---> conventions are
362           - pkg_ad.flow
363           - pkg_ad_diff.list
364           - pkg_ad_check_lev?_dir.h
365    
366    checkpoint51i_post
367    o merge of the branch-genmake2
368      - knowingly breaks the older genmake
369      - automatic generation of all ALLOW_${PKG_NAME} defines
370      - new testreport supersedes older testscript
371    o large number of package inclusion and header cleanups
372    checkpoint51i_pre
373    
374    o new output for adjoin of global ocean vector invariant
375    o fix for checkpoint of thermodynamic seaice and bulk_force
376    o Steph gchem various cleanups
377    
378    checkpoint 51h_pre
379    o fixed some single quotes
380    o modify gchem pkg to be more versatile
381    o modifications to clean up dic pkg
382    o add pkg/cfc
383    
384    checkpoint51g_post
385    o provide links for ARPACK and ADM*TLM
386    o start removing verification/vero/
387    o update AD-related stuff
388      (in particular some IF-statements in model/src/ routines)
389    o adding to verification/global_ocean.90x40x15/ adjoint of
390      vector invariant setup
391    
392    checkpoint51f_post
393    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
394    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
395      of tracer Green's fucntions for ocean inversion project.
396    
397    checkpoint51f_pre
398    o Added on-the-fly spatial interpolation capability
399        "USE_EXF_INTERPOLATION" to pkg/exf.
400      - This is a temporary Cartesian-grid hack until
401        the super-duper ESMF coupler becomes available.
402      - See verification/global_with_exf/README for usage example.
403      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
404        flags and modified pkg/seaice accordingly.
405    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
406        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
407        non-local transport term.
408    
409    checkpoint51e_post
410    o pkg/mom_vecinv:
411      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
412      - add time-ave diagnostic of vorticity advection.
413    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
414    o atmospheric geopotential: - include water vapor effect;
415                                - use p^kappa in p* scaling.
416    o land pkg: read initial state from files.
417    o AIM : add stratospheric drag in the upper level
418    
419    checkpoint51d_post
420    o change function ILNBLNK (=> last non-blank char.) to return zero
421      (instead of the string length) when the string. char is empty
422    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
423    o modif's to restore TAMC compatibility
424      - avoid "_d" constructs in PARAMETER declarations
425      - avoid interrupting lines by comment lines
426    o Use cluster local disks for purely local I/O
427      vs. globally visible disks needed for ctrl stuff
428      (merged from ecco-branch)
429      - new active_file_loc... and mdsio_..._loc routines
430      - affected packages: autodiff, ctrl, grdchk, mdsio
431    
432    checkpoint51c_post
433    o introducing integer flag debugLevel
434      - debLevZero: suppress all output
435      - debLevA: standard
436      - debLevB: equivalent to current debugMode=.TRUE.
437    o introducing pathname variable mdsioLocalDir for mdsio
438      that can be specified at runtime
439      (relevant for cluster I/O to local disk)
440    `
441    >>>checkpoint51b_post
442    adjoint of ptracers
443    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
444    o extended state in checkpoint_lev?, etc.
445    o alternative ctrl/cost with tr1 or ptracer
446    o new comlev1_bibj_ptracers
447    o new ptracers.flow
448    o made ptracers_forcing same as external_forcing_s
449    o added verification for adjoint with ptracers
450      - adm. grdchk fail so far
451      - tlm. grdchk OK
452      - checked tapelev/comlev recomputations: OK
453    <<<checkpoint51b_pre
454    
455    checkpoint51a_post
456    o added code for biogeochemistry package
457      - new pkgs: dic, gchem
458      - new subroutine in ptracers
459    o modify code for biogeo packages
460      - in model/src and pkg/ptracers
461    
462    checkpoint51
463    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
464      - autodiff, ctrl, exf, grdchk, seaice
465      kept separate packages
466      - cost, ecco, obcs
467    o updating verification/internal_wave, verification/lab_sea
468      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
469    
470    checkpoint50i_post
471    o Preparing next differentiable checkpoint and sync
472      of MAIN vs. ecco-branch
473      - 1st step: this one is differentiable
474      - 2nd step: next(! not this) checkpoint will have updated packages
475                  from ecco-branch)
476    
477    checkpoint50h_post
478    o new package "land": provide surface BC for AIM.
479    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
480    o AIM: use true log-P extrapolation for near surface temp (= as in
481        F.Molteni paper) ; update aim.5l_cs output.
482    o New variable in PARM03 for more flexible pickups
483    o somewhat cleaned package initialisation sequence for
484      ctrl/ cost/ ecco/ in packages_... routines
485    
486    checkpoint50g_post
487    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
488      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
489      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
490        made the default because of faster convergence than ADI
491    
492    checkpoint50f_post
493    o exf totally restructured
494      - replaced all exf_set_ routines by one generic exf_set_gen.F
495        and made sure it's still differentiable
496      - split exf_getffields.F into new exf_bulkformulae.F
497      - exf_inscal_/exf_outscal_ suffixes consistent with field names
498      - updated adjoint/makefile and relevant verif. accordingly
499    
500    checkpoint50f_pre
501     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
502          + change Evap over land. (update aim.5l_cs output)
503     o added missing .cvsignores and made uniform across expts
504     o changed configuration of tidal_basin_2d expt
505     o added pkg/debug functions for tracing code in fatal crashes
506     o tidied pkg/monitor to use MONITOR_OPTIONS.h
507     o new fn in pkg/monitor to stop model if solution grows too big
508     o removed lots of single quotes from comments
509    
510    checkpoint50e_post
511    o make KPP work with PTRACERS
512     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
513       nearly a copy of kpp_transport_s
514     - there is no analogue to SurfaceTendencyS, so I have to use
515       gPtr(of the surface layer) instead
516    o add a new platform SunFire+mpi (SunFire 15000) to genmake
517    checkpoint50e_pre
518    
519    checkpoint50d_post
520    o change kpp output from multiple-record state files to single-record state
521      files analogous to write_state.F
522    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
523      analogous to the cg2d-related output.
524    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
525      so that writing to internal file fn (with length 512) fails.
526    checkpoint50d_pre
527    
528    checkpoint50c_post
529    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
530    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
531    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
532    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
533    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
534    
535    checkpoint50c_pre
536    Merging from release1_p13:
537    o bug fix for pkg/seaice dynamic solver
538    o Added SEAICE_initialHEFF to pkg/seaice
539    
540    checkpoint50b_post
541    o store u*,v* in gU,V instead of in guNm1,gvNm1
542    o in order to put the momForcing out of the Adams-Bashforth:
543      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
544      to timestep.F
545    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
546    o re-generate output for highly sensitive test-exp:
547       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
548    
549    checkpoint50b_pre
550    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
551    o corrected CPP option mismatch in exf_Bulk... functions for case
552      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
553    
554    checkpoint50a_post
555    o Bug fix for merging between c50 and KPP.
556      ikey was passed from thermodynamics to kpp_calc via
557      common block rather than being recomputed in kpp_calc,
558      in contradiction with new key itdkey.
559      New key ikppkey created, and tamc.h headers updated.
560    
561    checkpoint50
562    - 2nd step of merge with ecco-branch:
563      merge changes in ecco-branch back into main trunk
564    - bug fix in find_alpha
565    - more storing in gmredi_calc_tensor.F, kpp_routines.F
566    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
567    - merged some sliced AD support routines
568    
569  checkpoint49  checkpoint49
570    merged from ecco-branch:
571    o exf:
572      - Enable initialisation of forcing fields to constant
573        (runtime) values.
574      - in exf_getffields.F
575        Reduce i-/j-loop to interior domain, discarding overlaps.
576        That also fixes wrong TAF-key computations for key_1, key_2
577        with bulf formulae.
578      - exf_init.F modify #ifdef for exf_init_evap
579      - exf_getffieldrec.F, ctrl_getrec.F
580        The following INT-usages are not safe:
581          fldsecs  = int(fldsecs/fldperiod)*fldperiod
582          fldcount = int(fldsecs/fldperiod) + 1
583        and were modified.
584    o autodiff: checkpoint_lev...
585      - updated storing for bulk formulae (some arrays were missing)
586      - added state for seaice package
587      - synchronized with main branch
588    o DIVA:
589      Modif.s in
590      - the_main_loop.F
591      - the_model_main.F
592      and added cost_final_restore.F cost_final_store.F
593      o With these changes, it is possible to fully separate
594        the first forward run to compute the cost function (mdthe_main_loop)
595        and adjoint runs over individual DIVA intervals (adthe_main_loop)
596        into separate model executions.
597        This enables better tuning of DIVA to given queue sizes.
598      o Loss of cost function value in consecutive DIVA runs is
599        fixed by storing to 'costfinal' file.
600      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
601        beginning/end of adjoint integration is accounted for.
602      The current changes apply to TAF-1.4.26.
603      TAF has one remaining bug, requiring one manual change
604      (see MITgcm manual).
605    o cal: synchronized between MAIN and ecco-branch
606    
607    checkpoint48i_post
608  o Changes to restore differentiability of code w.r.t. previous tag  o Changes to restore differentiability of code w.r.t. previous tag
609    (mostly adding new routines to make list and replacing    (mostly adding new routines to make list and replacing
610    pressure by totPhiHyd).    pressure by totPhiHyd).

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