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revision 1.128 by heimbach, Thu Feb 6 22:43:09 2003 UTC revision 1.293 by jmc, Fri May 14 16:31:58 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o pkg/land: only liquid water can diffuse or run-off
7    o AIM using land: soil wetness availability account for snow
8    o added printMapIncludesZeros to EEPARMS namelist
9    
10    checkpoint53a_post
11    o restore TAMC compatiility for exf_constants.h
12      (no usage of _d in .h)
13    o Additional storing in KPP in an attempt to fix
14      TAMC problem with adjoint of KPP code.
15      (no success...)
16      Identical code works fine with TAF.
17    o Fixed verification/natl_box_adjoint experiments.
18      Initial conditions for Experiments 4 and 5 are now
19      set to "SEAICE_initialHEFF=0", which is more reasonable,
20      and hence gives results closer to that of Experiment 2.
21      Experiment 6 requires "SEAICE_initialHEFF=1" and is working once again.
22    
23    checkpoint53
24    o stable checkpoint with up to date adjoint
25      TLM tests only run for 1st grdchk at the moment. Its unclear if
26      this is a code problem or a problem with resetting code for g_
27      variables that is being autogenerated wrong.
28      Otherwise:
29       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
30       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
31         are both still in chaos following their security messes.
32    
33    checkpoint52n_post
34    o various build (mostly genmake2) changes including:
35      - ability to build/run more easily within Cygwin and MacOS X
36      - more complicated Makefiles with a stronger dependence on Gnu Make
37    o pkg/seaice modifications
38      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
39        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
40        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
41      - changed proxy for geostrophic velocity and updated
42        verification/lab_sea/results/* accordingly
43      - removed ADI dynamic solver from pkg/seaice
44      - replaced all occurrences of 1/CSTICE or 1/CSUICE
45        they caused a segmentation fault under certain circumstances
46      - removed unused field WATR
47    o bug fix in exf-package:
48      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
49         now reflect that.
50    o small fixes in the cal-package:
51      - set reference date to first of January for the 'model'-calendar
52      - failing of cal_CheckDate in cal_FullDate now actually results in a
53        warning
54    o small modifications in exf-package to increase flexibility:
55      - change climtempfreeze from a constant to a runtime parameter that
56        is specified in data.exf_clim (default = -1.9)
57      - introduce runtime parameter windstressmax (default = 2.0) that is
58        specified in data.exf
59    o fix in pkg/thsice:
60      - update Evap (Tsf changes) to be consistent with Latent heat flux
61      - maintain snow precipitation unchanged (even if Tsf >=0).
62     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
63    
64    checkpoint52m_post
65    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
66      this does not change any of the results, because myIter=0 in swfrac always
67      lead to jwtype=2 (the default anyway), but the call makes little sense
68      as a default
69    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
70    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
71      atmospheric model (AIM) to use it ; add a "slab ocean" component.
72    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
73    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
74    o extending useSingleCpuIO option to work with new exch2 I/O format
75      - old-style, missing-tile I/O is still accessible by defining CPP
76        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
77    o monitor package can write to NetCDF files and/or STDOUT
78    o fix re-definition bug in MNC_GRID_INIT_ALL()
79    o doc/api_reference added
80      - a framework for building an API Reference Manual using all
81        the "protex" comments embedded in the code
82      - see pkg/generic_advdiff, pkg/mnc for examples
83    o MNC:
84      - make myThid the last argument for all subroutines
85      - new default for the grid files: NO halos
86      - add useMNC and other run-time flags
87      - separate per-file-group handling of the unlimited dimension
88      - early initialization of MNC w/ flags read at the eeboot stage
89        and lookup tables set in initialize_fixed
90      - write all MNC output to a freshly-created directory
91    o thermodynamics sea-ice (thsice) is now tested with testreport.
92    o test exp. advect_cs: use the standard cs32 grid ; update output.
93    o Added functionality to grdchk:
94      pick global i,j,k position (or nearest wet) where to perform check.
95    
96    checkpoint52l_post
97    o new land formulation:
98      a) use ground enthalpy as prognostic variable to ensure exact
99         energy conservation.
100      b) account for water temperature and for latent heat of freezing
101         in all processes (rain, run-off, ground storage)
102      c) compute surface and ground temperature implicitly.
103    o aim_v23 modification for new land model:
104      a) Treat separately land / ocean / sea-ice surface fluxes
105         to allow implicit computation of land & sea-ice surface temp.
106      b) add snow precipitation.
107    checkpoint52l_pre
108    
109    o fix problem (when 1 tile is empty) in min/max monitor.
110    o fix bug in timeAve (u,vZetatave in common block)
111    o no restoring terms under ice for pkg/seaice
112    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
113    o bug fix for pkg/seaice pickups
114    o change MNC call locations and add coordinate attributes
115    o mask vorticity at the corner ; affects global_ocean.cs output
116    o fix ini_curvilinear_grid ; test CS experiments with mpi
117    o aim.5l_cs: modify sea-ice fraction input file ; update output
118    o exf: Adding simple range check routine for exf fields after read
119    
120    checkpoint52k_post
121    o removed top-level directory "diags"
122      - we migrated these functions to pkg/timeave a long time ago
123    o fixed bug introduced in pkg/monitor
124    o accuracy ctrlprec = 32 insuffient for gradient checks using
125      averaged fields (I/O via cost_averages)
126      -> use ctrl.h in active_file*.F to control I/O precision.
127    o paramter list of CALL ADTHE_MAIN_LOOP
128    o added initial do_the_model_io to ecco
129    o set all ...Freq to zero after cost_final
130      taveFreq, dumpFreq, pChkptFreq
131    o MAIN and ECCO differentiability restored
132    
133    checkpoint52j_post
134    o fix nchklev in tamc.h for global_ocean...
135    o Bringing flow and store directives up-to-date
136    o Really weird thing!
137      call do_the_model_io from the_main_loop with parameters
138      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
139      TAF places a faulty re-call of initialise_varia
140      after cost_final call which should not be there!
141    checkpoint52j_pre
142    
143    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
144      error messages
145    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
146    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
147      debug output
148    o modfied mdsio_writefield.F to handle non-global files under exch2
149    o update AIM Cubed-Sphere exp (aim.5l_cs):
150      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
151    o update AIM Equatorial Channel exp:
152      use standard aim_v23 pkg and change the SST fields to be more realistic.
153    o globalFile now works with exch2
154    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
155      mon_vort3.F to make exch2 friendly with >1 tile per cube face
156    o limit timeave output for hi-res integrations
157    
158    checkpoint52i_post
159    o removed CPP_EEOPTIONS.h from verification/*/code
160    o updated the tiling for global_ocean_pressure
161    checkpoint52i_pre
162    
163    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
164      the old pkg/aim).
165    
166    checkpoint52h_pre
167    o shortened offending lines in exch2_send_rx?.template
168    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
169    o genmake2: add build & execute test for NetCDF code
170    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
171      old grid files, moved CPP_EEMACROS.h to pkg/exch2
172    o added useSingleCPUIO flag to monitor.F and mon_out.F
173    o added temporary hack for sea-ice dynamics on the cube:
174      metric terms are ignored and it is assumed that
175      there is no sea-ice on cube faces 1, 2, 4, and 5.
176    
177    checkpoint52f_post
178    o added exch2 cube routines to pkg/exch2
179    o modified hs94.cs-32x32x5 to use it
180    o added new grid files to hs94.cs-32x32x5
181    checkpoint52f_pre
182    
183    checkpoint52e_post
184    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
185      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
186    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
187      to work with implicit vertical advection and AB ;
188    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
189    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
190     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
191    checkpoint52e_pre
192    
193    o fix bug in impldiff when Nr=1 or Nr=2.
194    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
195    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
196    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
197      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
198    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
199    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
200    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
201    
202    checkpoint52d_post
203    o re-tiled many expts to allow comparison in multi-processor mode
204      - updated output accordingly
205      - changed hs94.128x64x5 to use intial T from file rather than use the
206        random number generator
207    o add infrastructure in model routines for fizhi and gridalt packages
208    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
209    o changes to permit hi-res, cubed-sphere, configuration
210      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
211      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
212      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
213        of surface winds for the cube
214      (A verification experiment, based on global_ocean.cs32x15, but with
215       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
216       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
217       complete with example surface forcing files and matlab scripts to look
218       at the output and compare it with that of global_ocean.cs32x15.)
219    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
220       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
221       to conform to the common rule.
222    o check-in the first version of the coupler + interfaces for multi-components
223       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
224       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
225       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
226       - ocean and atmos. share the same horizontal grid (no interpolation).
227       - exchanges between component and coupler is done in forward_step
228    o new verification experiment, cpl_aim+ocn:
229       coupled ocean - AIM atmosphere on cs32 grid.
230    
231    checkpoint52d_pre
232    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
233    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
234    
235    checkpoint52c_post
236    o Fixing OPTIONS files for use of exf:
237      - ALLOW_ECCO not needed
238      - ECCO_CPPOPTIONS.h should not be included from
239        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
240        as has been the case in the past
241      - All cal/exf related options are currently set in
242        single header file. Should remain so until we
243        agree on a consistent new policy.
244    o Removed all CPP options for cal package.
245      cal has no more CPP options.
246    o modified STOREs in GAD_ADVECTION
247    o corrected key comp. for passkey
248    
249    checkpoint52b_post
250    o new version: "thsice" of thermodynamic sea-ice pkg:
251     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
252     - modify fluxes but do not change theta directly;
253     - light cleaning of bulk_force pkg (still needed with thsice).
254     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
255       + output_thsice.txt to test thsice & bulk_force pkgs.
256    o put back grid & coriolis monitor output.
257    checkpoint52b_pre
258    
259    o call "do_the_model_io" at the beginning (=> dump initial state)
260    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
261    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
262      (need info on NUMBER_OF_PTRACERS)
263    o missing PTRACERS headers in some routines
264    o default tamc.h in pkg/autodiff supposed to crash
265      to ensure proper customization
266    
267    checkpoint52a_post
268    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
269      - moved surfaceTendencyTice from pkg/seaice to main code
270      - subroutine FREEZE_SURFACE now limits only surface temperature
271        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
272        => new output.txt for global_ocean.cs32x15 & global_with_exf
273      - keep the old version of FREEZE for backward compatibility;
274        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
275      - corresponding modifs for TAF directives
276    o added surface flux output variables to TIMEAVE_STATVARS
277    o time-averaged output for pkg/ptracers
278    o fix problem with ECCO-related divided adjoint
279      snapshot file was missing some ad-variables,
280      but no warning issued by TAF
281    
282    checkpoint52a_pre
283    o some bug fixes for #undef REAL4_IS_SLOW
284    
285    checkpoint52 = ecco_c52_e35
286    o after testing adjoints of checkpoint51u_post
287    
288    checkpoint51u_post
289    o this is the post-merge tag of the ecco-branch
290      (needs another clean checkout and re-testing)
291    o various natl_box_adjoint configs and results
292      but no input fields
293    o obcs adjoint not yet merged!
294    o adding ECCO global 1x1 and 2x2 degree configs
295    o updated/extended some store directives for seaice
296    o pkg/ecco now containes ecco-specific part of cost function
297    o top level routines the_main_loop, forward_step
298      supersede those in model/src/
299      previous input data.cost now in data.ecco
300      (new namelist ecco_cost_nml)
301    o in ctrl/ cleaned some cross-dependencies and updated CPP options
302    
303    checkpoint51t_post
304    o this is the pre-merge tag of the ecco-branch
305    
306    checkpoint51s_post
307    o cleanup: removed various obsolete #define-s
308    o pkg/grdchk
309      - renamed 'ph-grd 3' to 'grad-res'
310      - merged from ecco-branch
311        (remaining bug fixes for obcs gradient checks)
312      - additional high-precision output for testreport
313        (grep for 'precision_grdchk_result')
314    
315    checkpoint51r_post
316    o cleaned up or removed CPP_OPTIONS.h files
317    o updated results for some of the tests to reflect the new
318      optfiles (-ieee: -O0 instead of -O3)
319    
320    checkpoint51q_post
321    o cd_code:
322      - moved cd_scheme.F -> cd_code_scheme.F
323      - separate read_checkpoint from cd_code_ini_vars.F
324      - separated cd_code part from write_checkpoint
325      - updated AD_SOURCE, generated .flow
326      - added CD_CODE_VARS.h to the_main_loop
327      - Moving cd_code specific store dir.s to pkg/cd_code
328    o ctrl package totally restructured
329      - pack/unpack now optional and decoupled from
330        xx_/adxx_ I/O
331      - ctrl_pack/unpack cleaned
332        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
333      - confined inclusion of AD_CONFIG.h to where necessary.
334    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
335    
336    checkpoint51p_post
337    o create initial cd_code package
338      - WARNING: the initialization of fields within packages
339        is broken because INI_FIELDS (where READ_CHECKPOINT is
340        called) is called *before* PACKAGES_INIT_VARIABLES.
341        This seems to be backwards since
342        1) its important to initially zero the entire field including
343           the "halo" region
344        2) zeroing needs to be done *before* reading pickup info
345           and the pickup call might or might not happen in any
346           particular run
347      - this needs an overhaul for R2
348    o cleanup verification/*/code/GMREDI_OPTIONS.h
349    o cleanup testreport
350    
351    checkpoint51o_post
352    o bringing AD-related verif's up to date with genmake2
353      - carbon/
354      - global_ocean.90x40x15/
355      - hs.94.1x64x5/
356      - (front_relax/ )
357    o (more) consistent directory structure for AD-related verif.'s
358    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
359    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
360    o bug fix in find_alpha.F for MDJWF:
361      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
362        change rho -> rho-rhoConst
363      - replace call find_rho to find_rhonum
364    o initialisation of rFlx extended to full array (required by TAF)
365      and shifted to thermodynamics
366    o removed PTRACERS.h in ptracers routine
367    o added surfacetendencyPtr to S/R parameter list pracers_forcing
368    o Correcting initialisations for fVerU, fVerV.
369    o helping TAF to recognize dependency on kUp for
370      fVerU, fVerV
371    o Replacing delZ by delR in pkg/ctrl/
372    checkpoint51o_pre
373    
374    o undid all of cp51 pending some cleanups and discussion
375    o added the [#include "AD_CONFIG.h"] statement to all files that need
376       it for adjoint/tl #defines
377     o re-worked the build logic in genmake2 to support AD_CONFIG.h
378     o removed tools/genmake since it no longer works
379    
380    checkpoint51n_post
381    o modifications to make FREEZE flux visible to pkg/kpp
382      - moved surfaceTendencyTice from pkg/seaice to main code
383      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
384      - subroutine FREEZE now limits only surface temperature
385        (this means new output.txt for global_ocean.90x40x15,
386         global_ocean.cs32x15, and global_with_exf)
387    o added surface flux output variables to TIMEAVE_STATVARS
388    
389    checkpoint51n_pre
390    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
391    o added [#include "AD_CONFIG.h"] to all files that use the following
392      defines:
393      - ALLOW_ADJOINT_RUN
394      - ALLOW_TANGENTLINEAR_RUN
395      - ALLOW_ECCO_OPTIMIZATION
396    
397    checkpoint51m_post
398    o incorporating changes to get TAMC/TAF working in genmake2
399      - added new TAMC/TAF targets to the Makefile
400      - various cleanups related to package handling
401      - these changes should have no impact on the forward model
402    
403    checkpoint51l_post
404    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
405     - faster algorithm for cal_addtime.F
406     - higher precision arithmetic, where needed
407     - pkg/exf *startdate variables changed from calendar date to
408       model integration time
409    
410    checkpoint51l_pre
411    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
412    o enable to apply restoring on S & T only in a latitude band.
413    o update output (external_forcing_surf modif. change truncation errors)
414       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
415    
416    checkpoint51k_post
417    o change default to: useNHMTerms=.FALSE.
418     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
419       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
420     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
421        exp1, ideal_2D_oce
422     - change data file of oceanic exp (leave the results unchanged for now)
423       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
424    o set gravitySign automatically according to the vertical coordinate used
425      (and change sign: back to "logical" value: +1 when R increases downward)
426    o added an include barrier to the default CPP_OPTIONS.h and
427      removed the #include "PACKAGES_CONFIG.h" from it
428    o fix a bug in mom_fluxform (from chk51j_post)
429    
430    checkpoint51j_post
431    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
432    o adjusted some flow directives (dynamics, thermodynamics)
433    o added cubed-sphere case to test cost function
434    o heckpoint_lev?_directives.h now include
435      pkg-specific directives, whenever those are enabled.
436    o Moving pkg-specific flow directives to corresponding pkg
437      Moving pkg-specific differentiation list to corresponding pkg
438      Moving pkg-specific checkpoint-lev storing to corresponding pkg
439      ---> conventions are
440           - pkg_ad.flow
441           - pkg_ad_diff.list
442           - pkg_ad_check_lev?_dir.h
443    
444    checkpoint51i_post
445    o merge of the branch-genmake2
446      - knowingly breaks the older genmake
447      - automatic generation of all ALLOW_${PKG_NAME} defines
448      - new testreport supersedes older testscript
449    o large number of package inclusion and header cleanups
450    checkpoint51i_pre
451    
452    o new output for adjoin of global ocean vector invariant
453    o fix for checkpoint of thermodynamic seaice and bulk_force
454    o Steph gchem various cleanups
455    
456    checkpoint 51h_pre
457    o fixed some single quotes
458    o modify gchem pkg to be more versatile
459    o modifications to clean up dic pkg
460    o add pkg/cfc
461    
462    checkpoint51g_post
463    o provide links for ARPACK and ADM*TLM
464    o start removing verification/vero/
465    o update AD-related stuff
466      (in particular some IF-statements in model/src/ routines)
467    o adding to verification/global_ocean.90x40x15/ adjoint of
468      vector invariant setup
469    
470    checkpoint51f_post
471    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
472    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
473      of tracer Green's fucntions for ocean inversion project.
474    
475    checkpoint51f_pre
476    o Added on-the-fly spatial interpolation capability
477        "USE_EXF_INTERPOLATION" to pkg/exf.
478      - This is a temporary Cartesian-grid hack until
479        the super-duper ESMF coupler becomes available.
480      - See verification/global_with_exf/README for usage example.
481      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
482        flags and modified pkg/seaice accordingly.
483    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
484        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
485        non-local transport term.
486    
487    checkpoint51e_post
488    o pkg/mom_vecinv:
489      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
490      - add time-ave diagnostic of vorticity advection.
491    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
492    o atmospheric geopotential: - include water vapor effect;
493                                - use p^kappa in p* scaling.
494    o land pkg: read initial state from files.
495    o AIM : add stratospheric drag in the upper level
496    
497    checkpoint51d_post
498    o change function ILNBLNK (=> last non-blank char.) to return zero
499      (instead of the string length) when the string. char is empty
500    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
501    o modif's to restore TAMC compatibility
502      - avoid "_d" constructs in PARAMETER declarations
503      - avoid interrupting lines by comment lines
504    o Use cluster local disks for purely local I/O
505      vs. globally visible disks needed for ctrl stuff
506      (merged from ecco-branch)
507      - new active_file_loc... and mdsio_..._loc routines
508      - affected packages: autodiff, ctrl, grdchk, mdsio
509    
510    checkpoint51c_post
511    o introducing integer flag debugLevel
512      - debLevZero: suppress all output
513      - debLevA: standard
514      - debLevB: equivalent to current debugMode=.TRUE.
515    o introducing pathname variable mdsioLocalDir for mdsio
516      that can be specified at runtime
517      (relevant for cluster I/O to local disk)
518    `
519    >>>checkpoint51b_post
520    adjoint of ptracers
521    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
522    o extended state in checkpoint_lev?, etc.
523    o alternative ctrl/cost with tr1 or ptracer
524    o new comlev1_bibj_ptracers
525    o new ptracers.flow
526    o made ptracers_forcing same as external_forcing_s
527    o added verification for adjoint with ptracers
528      - adm. grdchk fail so far
529      - tlm. grdchk OK
530      - checked tapelev/comlev recomputations: OK
531    <<<checkpoint51b_pre
532    
533    checkpoint51a_post
534    o added code for biogeochemistry package
535      - new pkgs: dic, gchem
536      - new subroutine in ptracers
537    o modify code for biogeo packages
538      - in model/src and pkg/ptracers
539    
540    checkpoint51
541    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
542      - autodiff, ctrl, exf, grdchk, seaice
543      kept separate packages
544      - cost, ecco, obcs
545    o updating verification/internal_wave, verification/lab_sea
546      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
547    
548    checkpoint50i_post
549    o Preparing next differentiable checkpoint and sync
550      of MAIN vs. ecco-branch
551      - 1st step: this one is differentiable
552      - 2nd step: next(! not this) checkpoint will have updated packages
553                  from ecco-branch)
554    
555    checkpoint50h_post
556    o new package "land": provide surface BC for AIM.
557    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
558    o AIM: use true log-P extrapolation for near surface temp (= as in
559        F.Molteni paper) ; update aim.5l_cs output.
560    o New variable in PARM03 for more flexible pickups
561    o somewhat cleaned package initialisation sequence for
562      ctrl/ cost/ ecco/ in packages_... routines
563    
564    checkpoint50g_post
565    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
566      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
567      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
568        made the default because of faster convergence than ADI
569    
570    checkpoint50f_post
571    o exf totally restructured
572      - replaced all exf_set_ routines by one generic exf_set_gen.F
573        and made sure it's still differentiable
574      - split exf_getffields.F into new exf_bulkformulae.F
575      - exf_inscal_/exf_outscal_ suffixes consistent with field names
576      - updated adjoint/makefile and relevant verif. accordingly
577    
578    checkpoint50f_pre
579     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
580          + change Evap over land. (update aim.5l_cs output)
581     o added missing .cvsignores and made uniform across expts
582     o changed configuration of tidal_basin_2d expt
583     o added pkg/debug functions for tracing code in fatal crashes
584     o tidied pkg/monitor to use MONITOR_OPTIONS.h
585     o new fn in pkg/monitor to stop model if solution grows too big
586     o removed lots of single quotes from comments
587    
588    checkpoint50e_post
589    o make KPP work with PTRACERS
590     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
591       nearly a copy of kpp_transport_s
592     - there is no analogue to SurfaceTendencyS, so I have to use
593       gPtr(of the surface layer) instead
594    o add a new platform SunFire+mpi (SunFire 15000) to genmake
595    checkpoint50e_pre
596    
597    checkpoint50d_post
598    o change kpp output from multiple-record state files to single-record state
599      files analogous to write_state.F
600    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
601      analogous to the cg2d-related output.
602    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
603      so that writing to internal file fn (with length 512) fails.
604    checkpoint50d_pre
605    
606    checkpoint50c_post
607    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
608    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
609    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
610    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
611    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
612    
613    checkpoint50c_pre
614    Merging from release1_p13:
615    o bug fix for pkg/seaice dynamic solver
616    o Added SEAICE_initialHEFF to pkg/seaice
617    
618    checkpoint50b_post
619    o store u*,v* in gU,V instead of in guNm1,gvNm1
620    o in order to put the momForcing out of the Adams-Bashforth:
621      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
622      to timestep.F
623    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
624    o re-generate output for highly sensitive test-exp:
625       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
626    
627    checkpoint50b_pre
628    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
629    o corrected CPP option mismatch in exf_Bulk... functions for case
630      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
631    
632    checkpoint50a_post
633    o Bug fix for merging between c50 and KPP.
634      ikey was passed from thermodynamics to kpp_calc via
635      common block rather than being recomputed in kpp_calc,
636      in contradiction with new key itdkey.
637      New key ikppkey created, and tamc.h headers updated.
638    
639    checkpoint50
640    - 2nd step of merge with ecco-branch:
641      merge changes in ecco-branch back into main trunk
642    - bug fix in find_alpha
643    - more storing in gmredi_calc_tensor.F, kpp_routines.F
644    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
645    - merged some sliced AD support routines
646    
647    checkpoint49
648    merged from ecco-branch:
649    o exf:
650      - Enable initialisation of forcing fields to constant
651        (runtime) values.
652      - in exf_getffields.F
653        Reduce i-/j-loop to interior domain, discarding overlaps.
654        That also fixes wrong TAF-key computations for key_1, key_2
655        with bulf formulae.
656      - exf_init.F modify #ifdef for exf_init_evap
657      - exf_getffieldrec.F, ctrl_getrec.F
658        The following INT-usages are not safe:
659          fldsecs  = int(fldsecs/fldperiod)*fldperiod
660          fldcount = int(fldsecs/fldperiod) + 1
661        and were modified.
662    o autodiff: checkpoint_lev...
663      - updated storing for bulk formulae (some arrays were missing)
664      - added state for seaice package
665      - synchronized with main branch
666    o DIVA:
667      Modif.s in
668      - the_main_loop.F
669      - the_model_main.F
670      and added cost_final_restore.F cost_final_store.F
671      o With these changes, it is possible to fully separate
672        the first forward run to compute the cost function (mdthe_main_loop)
673        and adjoint runs over individual DIVA intervals (adthe_main_loop)
674        into separate model executions.
675        This enables better tuning of DIVA to given queue sizes.
676      o Loss of cost function value in consecutive DIVA runs is
677        fixed by storing to 'costfinal' file.
678      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
679        beginning/end of adjoint integration is accounted for.
680      The current changes apply to TAF-1.4.26.
681      TAF has one remaining bug, requiring one manual change
682      (see MITgcm manual).
683    o cal: synchronized between MAIN and ecco-branch
684    
685    checkpoint48i_post
686    o Changes to restore differentiability of code w.r.t. previous tag
687      (mostly adding new routines to make list and replacing
688      pressure by totPhiHyd).
689    o Updated and merged grdchk package
690      - has both ADM and TLM checks
691      - works for single- and multi-proc.
692      - output cleaned
693      - worked successfully for parallel DIVA
694    o genmake:
695      - Adding -platform=SP4
696      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
697    o Modif. for DIVA:
698      ctrl_unpack should not be called in intermediate DIVA interval.
699      (similar thing would apply for active files such as
700      tbar, sbar, psbar, which should not be reinitialised;
701      only relevant for ecco-branch)
702    
703    checkpoint48h_post
704    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
705    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
706    o Added SEAICE_initialHEFF to pkg/seaice
707    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
708    
709    checkpoint48g_post
710    --- EOS:
711    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
712      store total Potential in totPhyHyd for diagnostics & EOS.
713    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
714    --- Pressure/geopotential gradient:
715    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
716    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
717      ( changes results of global_ocean_pressure )
718    o NLFS + z-coord.: add eta*Rho' contribution.
719    o accurate phiHyd when using interface-W at the middle between 2 centers
720     ( changes results of ideal_2D_oce )
721    o includes r* 2nd term in potential gradient.
722    
723    checkpoint48f_post
724    Merging from release1_p12:
725    o Modifications for using pkg/exf with pkg/seaice
726      - improved description of the various forcing configurations
727      - added basic radiation bulk formulae to pkg/exf
728      - units/sign fix for evap computation in exf_getffields.F
729      - updated verification/global_with_exf/results/output.txt
730    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
731      (SBO) core products, including oceanic mass, center-of-mass,
732      angular, and bottom pressure (see pkg/sbo/README.sbo).
733    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
734      to avoid negative values in shallow regions.
735      - updated verification/natl_box/results/output.txt
736      - updated verification/lab_sea/results/output.txt
737    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
738    o Added useSingleCpuIO option (see PARAMS.h).
739    o Updated useSingleCpuIO option in mdsio_writefield.F to
740      work with multi-field files, e.g., for single-file pickup.
741    o pkg/seaice:
742      - bug fix in growth.F: QNET for no shortwave case
743      - added HeffFile for specifying initial sea-ice thickness
744      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
745    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
746      kpp_transport_t.F, forward_step.F, and the_main_loop.F
747    o pkg/seaice:
748      - adjoint-friendly modifications
749      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
750    
751    checkpoint48e_post
752    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
753    o dynamics: change definition of computational domain & adapt mom_fluxform
754      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
755    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
756        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
757        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
758        global_ocean.90x40x15 global_with_exf global_ocean_pressure
759        inverted_barometer solid-body.cs-32x32x1
760      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
761    
762    checkpoint48d_post
763    o in preparation for r*:
764     a) use pre-computed gradient of hydrostatic potential:
765        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
766     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
767        => affects results of glob_oce_pressure (different truncation error)  
768      update output.txt of ideal_2D_oce & global_ocean_pressure
769    
770    checkpoint48d_pre
771    o in preparation for r*:
772      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
773      pass the 2 comp. of the grad. as arguments to momentum S/R.
774      but for the moment, only used if it does not change the results.
775    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
776    
777  checkpoint48c_post  checkpoint48c_post
778  Modifications in treatment of initial flux forcing controls  Modifications in treatment of initial flux forcing controls
779  to avoid extra storing of flux fields.  to avoid extra storing of flux fields.

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