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revision 1.54 by jmc, Sat Oct 27 03:10:52 2001 UTC revision 1.289 by cnh, Thu May 6 13:51:15 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5  next checkpoint  
6  o apply Shapiro filter on T&S before calc_PhiHyd (stagger time stepping)  checkpoint53
7    o stable checkpoint with up to date adjoint
8      TLM tests only run for 1st grdchk at the moment. Its unclear if
9      this is a code problem or a problem with resetting code for g_
10      variables that is being autogenerated wrong.
11      Otherwise:
12       o code is testing well on Linux (P4 and AMD), SGI Alitix and Irix.
13       o IBM and HPQ tests could not be run because NCAR (IBM) and NCCS (HPQ)
14         are both still in chaos following their security messes.
15    
16    checkpoint52n_post
17    o various build (mostly genmake2) changes including:
18      - ability to build/run more easily within Cygwin and MacOS X
19      - more complicated Makefiles with a stronger dependence on Gnu Make
20    o pkg/seaice modifications
21      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
22        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
23        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
24      - changed proxy for geostrophic velocity and updated
25        verification/lab_sea/results/* accordingly
26      - removed ADI dynamic solver from pkg/seaice
27      - replaced all occurrences of 1/CSTICE or 1/CSUICE
28        they caused a segmentation fault under certain circumstances
29      - removed unused field WATR
30    o bug fix in exf-package:
31      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
32         now reflect that.
33    o small fixes in the cal-package:
34      - set reference date to first of January for the 'model'-calendar
35      - failing of cal_CheckDate in cal_FullDate now actually results in a
36        warning
37    o small modifications in exf-package to increase flexibility:
38      - change climtempfreeze from a constant to a runtime parameter that
39        is specified in data.exf_clim (default = -1.9)
40      - introduce runtime parameter windstressmax (default = 2.0) that is
41        specified in data.exf
42    o fix in pkg/thsice:
43      - update Evap (Tsf changes) to be consistent with Latent heat flux
44      - maintain snow precipitation unchanged (even if Tsf >=0).
45     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
46    
47    checkpoint52m_post
48    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
49      this does not change any of the results, because myIter=0 in swfrac always
50      lead to jwtype=2 (the default anyway), but the call makes little sense
51      as a default
52    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
53    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
54      atmospheric model (AIM) to use it ; add a "slab ocean" component.
55    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
56    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
57    o extending useSingleCpuIO option to work with new exch2 I/O format
58      - old-style, missing-tile I/O is still accessible by defining CPP
59        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
60    o monitor package can write to NetCDF files and/or STDOUT
61    o fix re-definition bug in MNC_GRID_INIT_ALL()
62    o doc/api_reference added
63      - a framework for building an API Reference Manual using all
64        the "protex" comments embedded in the code
65      - see pkg/generic_advdiff, pkg/mnc for examples
66    o MNC:
67      - make myThid the last argument for all subroutines
68      - new default for the grid files: NO halos
69      - add useMNC and other run-time flags
70      - separate per-file-group handling of the unlimited dimension
71      - early initialization of MNC w/ flags read at the eeboot stage
72        and lookup tables set in initialize_fixed
73      - write all MNC output to a freshly-created directory
74    o thermodynamics sea-ice (thsice) is now tested with testreport.
75    o test exp. advect_cs: use the standard cs32 grid ; update output.
76    o Added functionality to grdchk:
77      pick global i,j,k position (or nearest wet) where to perform check.
78    
79    checkpoint52l_post
80    o new land formulation:
81      a) use ground enthalpy as prognostic variable to ensure exact
82         energy conservation.
83      b) account for water temperature and for latent heat of freezing
84         in all processes (rain, run-off, ground storage)
85      c) compute surface and ground temperature implicitly.
86    o aim_v23 modification for new land model:
87      a) Treat separately land / ocean / sea-ice surface fluxes
88         to allow implicit computation of land & sea-ice surface temp.
89      b) add snow precipitation.
90    checkpoint52l_pre
91    
92    o fix problem (when 1 tile is empty) in min/max monitor.
93    o fix bug in timeAve (u,vZetatave in common block)
94    o no restoring terms under ice for pkg/seaice
95    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
96    o bug fix for pkg/seaice pickups
97    o change MNC call locations and add coordinate attributes
98    o mask vorticity at the corner ; affects global_ocean.cs output
99    o fix ini_curvilinear_grid ; test CS experiments with mpi
100    o aim.5l_cs: modify sea-ice fraction input file ; update output
101    o exf: Adding simple range check routine for exf fields after read
102    
103    checkpoint52k_post
104    o removed top-level directory "diags"
105      - we migrated these functions to pkg/timeave a long time ago
106    o fixed bug introduced in pkg/monitor
107    o accuracy ctrlprec = 32 insuffient for gradient checks using
108      averaged fields (I/O via cost_averages)
109      -> use ctrl.h in active_file*.F to control I/O precision.
110    o paramter list of CALL ADTHE_MAIN_LOOP
111    o added initial do_the_model_io to ecco
112    o set all ...Freq to zero after cost_final
113      taveFreq, dumpFreq, pChkptFreq
114    o MAIN and ECCO differentiability restored
115    
116    checkpoint52j_post
117    o fix nchklev in tamc.h for global_ocean...
118    o Bringing flow and store directives up-to-date
119    o Really weird thing!
120      call do_the_model_io from the_main_loop with parameters
121      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
122      TAF places a faulty re-call of initialise_varia
123      after cost_final call which should not be there!
124    checkpoint52j_pre
125    
126    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
127      error messages
128    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
129    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
130      debug output
131    o modfied mdsio_writefield.F to handle non-global files under exch2
132    o update AIM Cubed-Sphere exp (aim.5l_cs):
133      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
134    o update AIM Equatorial Channel exp:
135      use standard aim_v23 pkg and change the SST fields to be more realistic.
136    o globalFile now works with exch2
137    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
138      mon_vort3.F to make exch2 friendly with >1 tile per cube face
139    o limit timeave output for hi-res integrations
140    
141    checkpoint52i_post
142    o removed CPP_EEOPTIONS.h from verification/*/code
143    o updated the tiling for global_ocean_pressure
144    checkpoint52i_pre
145    
146    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
147      the old pkg/aim).
148    
149    checkpoint52h_pre
150    o shortened offending lines in exch2_send_rx?.template
151    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
152    o genmake2: add build & execute test for NetCDF code
153    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
154      old grid files, moved CPP_EEMACROS.h to pkg/exch2
155    o added useSingleCPUIO flag to monitor.F and mon_out.F
156    o added temporary hack for sea-ice dynamics on the cube:
157      metric terms are ignored and it is assumed that
158      there is no sea-ice on cube faces 1, 2, 4, and 5.
159    
160    checkpoint52f_post
161    o added exch2 cube routines to pkg/exch2
162    o modified hs94.cs-32x32x5 to use it
163    o added new grid files to hs94.cs-32x32x5
164    checkpoint52f_pre
165    
166    checkpoint52e_post
167    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
168      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
169    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
170      to work with implicit vertical advection and AB ;
171    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
172    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
173     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
174    checkpoint52e_pre
175    
176    o fix bug in impldiff when Nr=1 or Nr=2.
177    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
178    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
179    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
180      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
181    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
182    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
183    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
184    
185    checkpoint52d_post
186    o re-tiled many expts to allow comparison in multi-processor mode
187      - updated output accordingly
188      - changed hs94.128x64x5 to use intial T from file rather than use the
189        random number generator
190    o add infrastructure in model routines for fizhi and gridalt packages
191    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
192    o changes to permit hi-res, cubed-sphere, configuration
193      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
194      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
195      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
196        of surface winds for the cube
197      (A verification experiment, based on global_ocean.cs32x15, but with
198       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
199       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
200       complete with example surface forcing files and matlab scripts to look
201       at the output and compare it with that of global_ocean.cs32x15.)
202    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
203       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
204       to conform to the common rule.
205    o check-in the first version of the coupler + interfaces for multi-components
206       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
207       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
208       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
209       - ocean and atmos. share the same horizontal grid (no interpolation).
210       - exchanges between component and coupler is done in forward_step
211    o new verification experiment, cpl_aim+ocn:
212       coupled ocean - AIM atmosphere on cs32 grid.
213    
214    checkpoint52d_pre
215    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
216    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
217    
218    checkpoint52c_post
219    o Fixing OPTIONS files for use of exf:
220      - ALLOW_ECCO not needed
221      - ECCO_CPPOPTIONS.h should not be included from
222        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
223        as has been the case in the past
224      - All cal/exf related options are currently set in
225        single header file. Should remain so until we
226        agree on a consistent new policy.
227    o Removed all CPP options for cal package.
228      cal has no more CPP options.
229    o modified STOREs in GAD_ADVECTION
230    o corrected key comp. for passkey
231    
232    checkpoint52b_post
233    o new version: "thsice" of thermodynamic sea-ice pkg:
234     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
235     - modify fluxes but do not change theta directly;
236     - light cleaning of bulk_force pkg (still needed with thsice).
237     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
238       + output_thsice.txt to test thsice & bulk_force pkgs.
239    o put back grid & coriolis monitor output.
240    checkpoint52b_pre
241    
242    o call "do_the_model_io" at the beginning (=> dump initial state)
243    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
244    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
245      (need info on NUMBER_OF_PTRACERS)
246    o missing PTRACERS headers in some routines
247    o default tamc.h in pkg/autodiff supposed to crash
248      to ensure proper customization
249    
250    checkpoint52a_post
251    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
252      - moved surfaceTendencyTice from pkg/seaice to main code
253      - subroutine FREEZE_SURFACE now limits only surface temperature
254        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
255        => new output.txt for global_ocean.cs32x15 & global_with_exf
256      - keep the old version of FREEZE for backward compatibility;
257        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
258      - corresponding modifs for TAF directives
259    o added surface flux output variables to TIMEAVE_STATVARS
260    o time-averaged output for pkg/ptracers
261    o fix problem with ECCO-related divided adjoint
262      snapshot file was missing some ad-variables,
263      but no warning issued by TAF
264    
265    checkpoint52a_pre
266    o some bug fixes for #undef REAL4_IS_SLOW
267    
268    checkpoint52 = ecco_c52_e35
269    o after testing adjoints of checkpoint51u_post
270    
271    checkpoint51u_post
272    o this is the post-merge tag of the ecco-branch
273      (needs another clean checkout and re-testing)
274    o various natl_box_adjoint configs and results
275      but no input fields
276    o obcs adjoint not yet merged!
277    o adding ECCO global 1x1 and 2x2 degree configs
278    o updated/extended some store directives for seaice
279    o pkg/ecco now containes ecco-specific part of cost function
280    o top level routines the_main_loop, forward_step
281      supersede those in model/src/
282      previous input data.cost now in data.ecco
283      (new namelist ecco_cost_nml)
284    o in ctrl/ cleaned some cross-dependencies and updated CPP options
285    
286    checkpoint51t_post
287    o this is the pre-merge tag of the ecco-branch
288    
289    checkpoint51s_post
290    o cleanup: removed various obsolete #define-s
291    o pkg/grdchk
292      - renamed 'ph-grd 3' to 'grad-res'
293      - merged from ecco-branch
294        (remaining bug fixes for obcs gradient checks)
295      - additional high-precision output for testreport
296        (grep for 'precision_grdchk_result')
297    
298    checkpoint51r_post
299    o cleaned up or removed CPP_OPTIONS.h files
300    o updated results for some of the tests to reflect the new
301      optfiles (-ieee: -O0 instead of -O3)
302    
303    checkpoint51q_post
304    o cd_code:
305      - moved cd_scheme.F -> cd_code_scheme.F
306      - separate read_checkpoint from cd_code_ini_vars.F
307      - separated cd_code part from write_checkpoint
308      - updated AD_SOURCE, generated .flow
309      - added CD_CODE_VARS.h to the_main_loop
310      - Moving cd_code specific store dir.s to pkg/cd_code
311    o ctrl package totally restructured
312      - pack/unpack now optional and decoupled from
313        xx_/adxx_ I/O
314      - ctrl_pack/unpack cleaned
315        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
316      - confined inclusion of AD_CONFIG.h to where necessary.
317    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
318    
319    checkpoint51p_post
320    o create initial cd_code package
321      - WARNING: the initialization of fields within packages
322        is broken because INI_FIELDS (where READ_CHECKPOINT is
323        called) is called *before* PACKAGES_INIT_VARIABLES.
324        This seems to be backwards since
325        1) its important to initially zero the entire field including
326           the "halo" region
327        2) zeroing needs to be done *before* reading pickup info
328           and the pickup call might or might not happen in any
329           particular run
330      - this needs an overhaul for R2
331    o cleanup verification/*/code/GMREDI_OPTIONS.h
332    o cleanup testreport
333    
334    checkpoint51o_post
335    o bringing AD-related verif's up to date with genmake2
336      - carbon/
337      - global_ocean.90x40x15/
338      - hs.94.1x64x5/
339      - (front_relax/ )
340    o (more) consistent directory structure for AD-related verif.'s
341    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
342    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
343    o bug fix in find_alpha.F for MDJWF:
344      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
345        change rho -> rho-rhoConst
346      - replace call find_rho to find_rhonum
347    o initialisation of rFlx extended to full array (required by TAF)
348      and shifted to thermodynamics
349    o removed PTRACERS.h in ptracers routine
350    o added surfacetendencyPtr to S/R parameter list pracers_forcing
351    o Correcting initialisations for fVerU, fVerV.
352    o helping TAF to recognize dependency on kUp for
353      fVerU, fVerV
354    o Replacing delZ by delR in pkg/ctrl/
355    checkpoint51o_pre
356    
357    o undid all of cp51 pending some cleanups and discussion
358    o added the [#include "AD_CONFIG.h"] statement to all files that need
359       it for adjoint/tl #defines
360     o re-worked the build logic in genmake2 to support AD_CONFIG.h
361     o removed tools/genmake since it no longer works
362    
363    checkpoint51n_post
364    o modifications to make FREEZE flux visible to pkg/kpp
365      - moved surfaceTendencyTice from pkg/seaice to main code
366      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
367      - subroutine FREEZE now limits only surface temperature
368        (this means new output.txt for global_ocean.90x40x15,
369         global_ocean.cs32x15, and global_with_exf)
370    o added surface flux output variables to TIMEAVE_STATVARS
371    
372    checkpoint51n_pre
373    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
374    o added [#include "AD_CONFIG.h"] to all files that use the following
375      defines:
376      - ALLOW_ADJOINT_RUN
377      - ALLOW_TANGENTLINEAR_RUN
378      - ALLOW_ECCO_OPTIMIZATION
379    
380    checkpoint51m_post
381    o incorporating changes to get TAMC/TAF working in genmake2
382      - added new TAMC/TAF targets to the Makefile
383      - various cleanups related to package handling
384      - these changes should have no impact on the forward model
385    
386    checkpoint51l_post
387    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
388     - faster algorithm for cal_addtime.F
389     - higher precision arithmetic, where needed
390     - pkg/exf *startdate variables changed from calendar date to
391       model integration time
392    
393    checkpoint51l_pre
394    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
395    o enable to apply restoring on S & T only in a latitude band.
396    o update output (external_forcing_surf modif. change truncation errors)
397       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
398    
399    checkpoint51k_post
400    o change default to: useNHMTerms=.FALSE.
401     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
402       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
403     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
404        exp1, ideal_2D_oce
405     - change data file of oceanic exp (leave the results unchanged for now)
406       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
407    o set gravitySign automatically according to the vertical coordinate used
408      (and change sign: back to "logical" value: +1 when R increases downward)
409    o added an include barrier to the default CPP_OPTIONS.h and
410      removed the #include "PACKAGES_CONFIG.h" from it
411    o fix a bug in mom_fluxform (from chk51j_post)
412    
413    checkpoint51j_post
414    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
415    o adjusted some flow directives (dynamics, thermodynamics)
416    o added cubed-sphere case to test cost function
417    o heckpoint_lev?_directives.h now include
418      pkg-specific directives, whenever those are enabled.
419    o Moving pkg-specific flow directives to corresponding pkg
420      Moving pkg-specific differentiation list to corresponding pkg
421      Moving pkg-specific checkpoint-lev storing to corresponding pkg
422      ---> conventions are
423           - pkg_ad.flow
424           - pkg_ad_diff.list
425           - pkg_ad_check_lev?_dir.h
426    
427    checkpoint51i_post
428    o merge of the branch-genmake2
429      - knowingly breaks the older genmake
430      - automatic generation of all ALLOW_${PKG_NAME} defines
431      - new testreport supersedes older testscript
432    o large number of package inclusion and header cleanups
433    checkpoint51i_pre
434    
435    o new output for adjoin of global ocean vector invariant
436    o fix for checkpoint of thermodynamic seaice and bulk_force
437    o Steph gchem various cleanups
438    
439    checkpoint 51h_pre
440    o fixed some single quotes
441    o modify gchem pkg to be more versatile
442    o modifications to clean up dic pkg
443    o add pkg/cfc
444    
445    checkpoint51g_post
446    o provide links for ARPACK and ADM*TLM
447    o start removing verification/vero/
448    o update AD-related stuff
449      (in particular some IF-statements in model/src/ routines)
450    o adding to verification/global_ocean.90x40x15/ adjoint of
451      vector invariant setup
452    
453    checkpoint51f_post
454    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
455    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
456      of tracer Green's fucntions for ocean inversion project.
457    
458    checkpoint51f_pre
459    o Added on-the-fly spatial interpolation capability
460        "USE_EXF_INTERPOLATION" to pkg/exf.
461      - This is a temporary Cartesian-grid hack until
462        the super-duper ESMF coupler becomes available.
463      - See verification/global_with_exf/README for usage example.
464      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
465        flags and modified pkg/seaice accordingly.
466    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
467        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
468        non-local transport term.
469    
470    checkpoint51e_post
471    o pkg/mom_vecinv:
472      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
473      - add time-ave diagnostic of vorticity advection.
474    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
475    o atmospheric geopotential: - include water vapor effect;
476                                - use p^kappa in p* scaling.
477    o land pkg: read initial state from files.
478    o AIM : add stratospheric drag in the upper level
479    
480    checkpoint51d_post
481    o change function ILNBLNK (=> last non-blank char.) to return zero
482      (instead of the string length) when the string. char is empty
483    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
484    o modif's to restore TAMC compatibility
485      - avoid "_d" constructs in PARAMETER declarations
486      - avoid interrupting lines by comment lines
487    o Use cluster local disks for purely local I/O
488      vs. globally visible disks needed for ctrl stuff
489      (merged from ecco-branch)
490      - new active_file_loc... and mdsio_..._loc routines
491      - affected packages: autodiff, ctrl, grdchk, mdsio
492    
493    checkpoint51c_post
494    o introducing integer flag debugLevel
495      - debLevZero: suppress all output
496      - debLevA: standard
497      - debLevB: equivalent to current debugMode=.TRUE.
498    o introducing pathname variable mdsioLocalDir for mdsio
499      that can be specified at runtime
500      (relevant for cluster I/O to local disk)
501    `
502    >>>checkpoint51b_post
503    adjoint of ptracers
504    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
505    o extended state in checkpoint_lev?, etc.
506    o alternative ctrl/cost with tr1 or ptracer
507    o new comlev1_bibj_ptracers
508    o new ptracers.flow
509    o made ptracers_forcing same as external_forcing_s
510    o added verification for adjoint with ptracers
511      - adm. grdchk fail so far
512      - tlm. grdchk OK
513      - checked tapelev/comlev recomputations: OK
514    <<<checkpoint51b_pre
515    
516    checkpoint51a_post
517    o added code for biogeochemistry package
518      - new pkgs: dic, gchem
519      - new subroutine in ptracers
520    o modify code for biogeo packages
521      - in model/src and pkg/ptracers
522    
523    checkpoint51
524    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
525      - autodiff, ctrl, exf, grdchk, seaice
526      kept separate packages
527      - cost, ecco, obcs
528    o updating verification/internal_wave, verification/lab_sea
529      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
530    
531    checkpoint50i_post
532    o Preparing next differentiable checkpoint and sync
533      of MAIN vs. ecco-branch
534      - 1st step: this one is differentiable
535      - 2nd step: next(! not this) checkpoint will have updated packages
536                  from ecco-branch)
537    
538    checkpoint50h_post
539    o new package "land": provide surface BC for AIM.
540    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
541    o AIM: use true log-P extrapolation for near surface temp (= as in
542        F.Molteni paper) ; update aim.5l_cs output.
543    o New variable in PARM03 for more flexible pickups
544    o somewhat cleaned package initialisation sequence for
545      ctrl/ cost/ ecco/ in packages_... routines
546    
547    checkpoint50g_post
548    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
549      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
550      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
551        made the default because of faster convergence than ADI
552    
553    checkpoint50f_post
554    o exf totally restructured
555      - replaced all exf_set_ routines by one generic exf_set_gen.F
556        and made sure it's still differentiable
557      - split exf_getffields.F into new exf_bulkformulae.F
558      - exf_inscal_/exf_outscal_ suffixes consistent with field names
559      - updated adjoint/makefile and relevant verif. accordingly
560    
561    checkpoint50f_pre
562     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
563          + change Evap over land. (update aim.5l_cs output)
564     o added missing .cvsignores and made uniform across expts
565     o changed configuration of tidal_basin_2d expt
566     o added pkg/debug functions for tracing code in fatal crashes
567     o tidied pkg/monitor to use MONITOR_OPTIONS.h
568     o new fn in pkg/monitor to stop model if solution grows too big
569     o removed lots of single quotes from comments
570    
571    checkpoint50e_post
572    o make KPP work with PTRACERS
573     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
574       nearly a copy of kpp_transport_s
575     - there is no analogue to SurfaceTendencyS, so I have to use
576       gPtr(of the surface layer) instead
577    o add a new platform SunFire+mpi (SunFire 15000) to genmake
578    checkpoint50e_pre
579    
580    checkpoint50d_post
581    o change kpp output from multiple-record state files to single-record state
582      files analogous to write_state.F
583    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
584      analogous to the cg2d-related output.
585    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
586      so that writing to internal file fn (with length 512) fails.
587    checkpoint50d_pre
588    
589    checkpoint50c_post
590    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
591    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
592    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
593    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
594    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
595    
596    checkpoint50c_pre
597    Merging from release1_p13:
598    o bug fix for pkg/seaice dynamic solver
599    o Added SEAICE_initialHEFF to pkg/seaice
600    
601    checkpoint50b_post
602    o store u*,v* in gU,V instead of in guNm1,gvNm1
603    o in order to put the momForcing out of the Adams-Bashforth:
604      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
605      to timestep.F
606    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
607    o re-generate output for highly sensitive test-exp:
608       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
609    
610    checkpoint50b_pre
611    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
612    o corrected CPP option mismatch in exf_Bulk... functions for case
613      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
614    
615    checkpoint50a_post
616    o Bug fix for merging between c50 and KPP.
617      ikey was passed from thermodynamics to kpp_calc via
618      common block rather than being recomputed in kpp_calc,
619      in contradiction with new key itdkey.
620      New key ikppkey created, and tamc.h headers updated.
621    
622    checkpoint50
623    - 2nd step of merge with ecco-branch:
624      merge changes in ecco-branch back into main trunk
625    - bug fix in find_alpha
626    - more storing in gmredi_calc_tensor.F, kpp_routines.F
627    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
628    - merged some sliced AD support routines
629    
630    checkpoint49
631    merged from ecco-branch:
632    o exf:
633      - Enable initialisation of forcing fields to constant
634        (runtime) values.
635      - in exf_getffields.F
636        Reduce i-/j-loop to interior domain, discarding overlaps.
637        That also fixes wrong TAF-key computations for key_1, key_2
638        with bulf formulae.
639      - exf_init.F modify #ifdef for exf_init_evap
640      - exf_getffieldrec.F, ctrl_getrec.F
641        The following INT-usages are not safe:
642          fldsecs  = int(fldsecs/fldperiod)*fldperiod
643          fldcount = int(fldsecs/fldperiod) + 1
644        and were modified.
645    o autodiff: checkpoint_lev...
646      - updated storing for bulk formulae (some arrays were missing)
647      - added state for seaice package
648      - synchronized with main branch
649    o DIVA:
650      Modif.s in
651      - the_main_loop.F
652      - the_model_main.F
653      and added cost_final_restore.F cost_final_store.F
654      o With these changes, it is possible to fully separate
655        the first forward run to compute the cost function (mdthe_main_loop)
656        and adjoint runs over individual DIVA intervals (adthe_main_loop)
657        into separate model executions.
658        This enables better tuning of DIVA to given queue sizes.
659      o Loss of cost function value in consecutive DIVA runs is
660        fixed by storing to 'costfinal' file.
661      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
662        beginning/end of adjoint integration is accounted for.
663      The current changes apply to TAF-1.4.26.
664      TAF has one remaining bug, requiring one manual change
665      (see MITgcm manual).
666    o cal: synchronized between MAIN and ecco-branch
667    
668    checkpoint48i_post
669    o Changes to restore differentiability of code w.r.t. previous tag
670      (mostly adding new routines to make list and replacing
671      pressure by totPhiHyd).
672    o Updated and merged grdchk package
673      - has both ADM and TLM checks
674      - works for single- and multi-proc.
675      - output cleaned
676      - worked successfully for parallel DIVA
677    o genmake:
678      - Adding -platform=SP4
679      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
680    o Modif. for DIVA:
681      ctrl_unpack should not be called in intermediate DIVA interval.
682      (similar thing would apply for active files such as
683      tbar, sbar, psbar, which should not be reinitialised;
684      only relevant for ecco-branch)
685    
686    checkpoint48h_post
687    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
688    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
689    o Added SEAICE_initialHEFF to pkg/seaice
690    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
691    
692    checkpoint48g_post
693    --- EOS:
694    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
695      store total Potential in totPhyHyd for diagnostics & EOS.
696    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
697    --- Pressure/geopotential gradient:
698    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
699    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
700      ( changes results of global_ocean_pressure )
701    o NLFS + z-coord.: add eta*Rho' contribution.
702    o accurate phiHyd when using interface-W at the middle between 2 centers
703     ( changes results of ideal_2D_oce )
704    o includes r* 2nd term in potential gradient.
705    
706    checkpoint48f_post
707    Merging from release1_p12:
708    o Modifications for using pkg/exf with pkg/seaice
709      - improved description of the various forcing configurations
710      - added basic radiation bulk formulae to pkg/exf
711      - units/sign fix for evap computation in exf_getffields.F
712      - updated verification/global_with_exf/results/output.txt
713    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
714      (SBO) core products, including oceanic mass, center-of-mass,
715      angular, and bottom pressure (see pkg/sbo/README.sbo).
716    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
717      to avoid negative values in shallow regions.
718      - updated verification/natl_box/results/output.txt
719      - updated verification/lab_sea/results/output.txt
720    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
721    o Added useSingleCpuIO option (see PARAMS.h).
722    o Updated useSingleCpuIO option in mdsio_writefield.F to
723      work with multi-field files, e.g., for single-file pickup.
724    o pkg/seaice:
725      - bug fix in growth.F: QNET for no shortwave case
726      - added HeffFile for specifying initial sea-ice thickness
727      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
728    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
729      kpp_transport_t.F, forward_step.F, and the_main_loop.F
730    o pkg/seaice:
731      - adjoint-friendly modifications
732      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
733    
734    checkpoint48e_post
735    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
736    o dynamics: change definition of computational domain & adapt mom_fluxform
737      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
738    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
739        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
740        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
741        global_ocean.90x40x15 global_with_exf global_ocean_pressure
742        inverted_barometer solid-body.cs-32x32x1
743      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
744    
745    checkpoint48d_post
746    o in preparation for r*:
747     a) use pre-computed gradient of hydrostatic potential:
748        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
749     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
750        => affects results of glob_oce_pressure (different truncation error)  
751      update output.txt of ideal_2D_oce & global_ocean_pressure
752    
753    checkpoint48d_pre
754    o in preparation for r*:
755      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
756      pass the 2 comp. of the grad. as arguments to momentum S/R.
757      but for the moment, only used if it does not change the results.
758    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
759    
760    checkpoint48c_post
761    Modifications in treatment of initial flux forcing controls
762    to avoid extra storing of flux fields.
763    
764    checkpoint48c_pre
765    o Added tidal_basin_2d experiment (currently 1D!)
766    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
767    
768    checkpoint48b_post
769    o r* coordinate added in #ifdef NONLIN_FRSURF block.
770     (modification to pressure gradient not yet implemented)
771    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
772      (for U & V) that are used for vertical advection of momentum.
773    
774    checkpoint48a_post
775    o In preparation for r*, use temp. array to compute vertical transport
776       in flux-form momentum pkg. => change results of few test-exp.
777      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
778                        lab_sea, natl_box & plume_on_slope
779    
780    checkpoint48
781    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
782    
783    checkpoint47j_post
784    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
785    o moved adexch from forward_step to addummy_in_stepping
786    o added exch in ctrl_map_...
787    o aveFreq.=0. at end of cost_final to avoid overwrite in
788      reverse checkpointing loop
789    o Yet more changes in gmredi:
790      * adgmredi_calc_tensor
791        avoiding all recomputation of gmredi_slope_limit
792      * adgmredi_x/y/rtransport
793        added flag for excessive storing to avoid recomp. of
794        u/v/rtans, dTdx/y/z
795        -> this is not really necessary and very memory-consuming
796      * adgmredi_slope_psi:
797        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
798      * gmredi_slope_limit
799        re-activated full calculation of taperfct for case 'ac02'
800    o updating verification/ adjoints of carbon, global_ocean.90x40x15
801    
802    checkpoint47i_post
803    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
804    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
805      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
806    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
807    o gmredi: fix few bugs.
808    
809    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
810    This will be a good checkpoint to plug into the ecco-branch.
811    o few modif.'s to get latest version adjointed
812      (mainly kick out code in ini_linear_phisurf)
813    o modif's to run adjoint with exactConserv
814    o case GM_BOLUS_ADVEC should be cleaned
815      S/R gmredi_slope_psi should be cleaned
816    o verification/carbon now has exactConserv=.TRUE.
817    
818    checkpoint47g_post
819    o time-average AIM output: becomes independent from statvars time-average
820      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
821    o After TAF bug fix:
822      Tested adjoint of gmredi package.
823      Tests were done with checkpoint47 rather than with latest
824      checkpoint47f_post since the latter is broken for the adjoint
825      verification/carbon/ contains both ADM and TLM gradient checks.
826    Here they are, before they get changed/lost/stolen.
827    Mostly modif.'s to fix numerical sensitivities.
828    Gradient checks OK for
829    - GM_taper_scheme:
830      * clipping
831      * ac02
832      * linear
833      * glw91
834      * dm95
835      * ldd97
836    - GMREDI_OPTIONS:
837      * GM_VISBECK_VARIABLE_K
838      * GM_NON_UNITY_DIAGONAL
839      * GM_EXTRA_DIAGONAL
840      * GM_BOLUS_ADVEC
841    in conjunction with data.gmredi parameters to be checked in
842    in a few minutes under verification/carbon/code/
843    
844    checkpoint47f_post
845    Merging from release1_p10:
846    o modifications for using pkg/exf with pkg/seaice
847      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
848        and SEAICE_EXTERNAL_FLUXES
849      - pkg/exf CPP options EXF_READ_EVAP and
850        EXF_NO_BULK_COMPUTATIONS
851      - usage examples are Experiments 8 and 9 in
852        verification/lab_sea/README
853      - verification/lab_sea default experiment now uses
854        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
855    
856    checkpoint47e_post
857    o created a tag prior to creating a branch
858    
859    checkpoint47d_post
860    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
861      at the bottom boundary had an erroneous half slip boundary condition
862    o added bottom drag and no slip boundary condition capabilities to
863      oceanic pressure coordinates code
864    o added new verification experiment global_ocean_pressure, this experiment is
865      also described in the tutorial section of the manual
866    checkpoint47d_pre
867    
868    checkpoint47c_post
869    o Added a verification experiment for a global cubed-sphere ocean run
870      -  verification/global_ocean.cubed32x32x30
871      -  uses pkg/therm_seaice and pkg/bulk_forcing
872    
873    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
874    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
875      when using P-coordinate; only implemented for atmospheric config.
876    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
877      NOTES: requires option NONLIN_FRSURF to be "#define".
878    o update advect_xz/results/output.txt (left from checkpoint44g_post)
879    
880    checkpoint47b_post
881    Merging from release1_p9:
882    o pkg/seaice
883      - removed GOTO's and added taf directives
884      - double precision constants to reduce the g77 (Linux)
885        to F77 (SGI) differences reported in release1_p8
886    o tools/genmake
887      - added SGI options
888    o verification/testscript
889      - updated to that of checkpoint47a_post
890    o verification/global_ocean.90x40x15/input/eedata
891      - modified for SGI f77 compatibility
892    o verification/lab_sea
893      - added description of sea-ice model
894      - added missing matlab routines
895      - added test of thermodynamics parallelization
896    
897    checkpoint47a_post
898    o new pkg: aim_v23
899     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
900       for now, keep the same surface forcing as before.
901     - Part-Cell implemented into AIM; check that Heat & Water are conserved
902     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
903     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
904    o add diagnostic of surface correction term in monitor output
905    
906    o bulk_force and therm_seaice
907    - Two packages:  bulk_force (Bulk forcing)
908      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
909    - Earlier integration from Stephaine Dutkiewicz
910      and Patrick Heimbach.
911    - Two ifdef statements for compile time,
912       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
913    
914    checkpoint47
915    differentiable version of checkpoint46n_post
916    o bug fix in quasihydrostaticterms
917    o * "clean" adjoint code (in terms of extensive recomputations)
918        can now be obtained for all GMREDI options (i.e. for
919        - GM_VISBECK_VARIABLE_K
920        - GM_NON_UNITY_DIAGONAL
921        - GM_EXTRA_DIAGONAL
922        - GM_BOLUS_ADVEC )
923      * However, wrong gradient check problem remains unsolved.
924      * New CPP options have been introduced for different
925        tapering schemes
926    o external_fields_load now part of differentiation list
927    o pressure needs multiple storing;
928      would be nice to have store_pressure at beginning or
929      end of forward_step, e.g. by having phiHyd global (5-dim.)
930      (NB: pressure is needed for certain cases in find_rho,
931      which is also invoked through convective_adjustment).
932    o recomputations in find_rho for cases
933     'JMD95'/'UNESCO' or 'MDJWF' are OK.
934    o #define ATMOSPHERIC_LOADING should be differentiable
935    o ini_forcing shifted to begining of initialise_varia
936    o Incorporating QNVS line search routines into MITgcm
937      (this is separate code, and therefore not under pkg)
938      lsopt/, optim/
939    o Updated verification/carbon/
940      - #define GM_VISBECK_VARIABLE_K
941      - GM_taper_scheme    = 'ldd97'    
942    
943    checkpoint46n_post
944    Merging from release1_p8:
945    o verification/natl_box:
946      updating new external_fields_load routine
947    o New package: pkg/seaice
948      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
949      The sea-ice code is based on Hibler (1979-1980).
950      Two sea-ice dynamic solvers, ADI and LSR, are included.
951      In addition to computing prognostic sea-ice variables and diagnosing
952      the forcing/external data fields that drive the ocean model,
953      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
954      The implied surface heat flux is then stored in variable
955      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
956      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
957      non-local transport term.  Because this call precedes model
958      thermodynamics, temperature under sea-ice may not be "exactly" at
959      the freezing point by the time theta is dumped or time-averaged.
960      N.B.: fairly large differences in accuracy occur across
961            different platforms/compilers; comparison between
962            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
963            generated output gives:
964       T           S           U           V
965      C D M    c        m  s        m  s        m  s        m  s
966      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
967      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
968      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
969    
970      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
971    o GAD:
972      - generated new common blocks to account for call of
973        same gad routines with differing traceridentities
974        (needed to modify tracerIdentity indices in GAD.h)
975      - generated separate common blocks for case useCubedSphereExchange
976        (Department of Futurology)
977      - parameter lists to gmredi_?transport: added tracerIdentity
978      - added new key indices to tamc.h
979    o external_fields_load:
980      - added this routine to TAF list
981      - needed to make some common blocks global and additional storing
982        along the same lines as exf package (checkpoint_lev?_directives.h)
983    o exf:
984      updated external forcing package
985      - bug fixes carried over from ecco-branch
986        (missing OBCS_OPTIONS.h in two routines)
987      - enable easy to use "no forcing".
988      - added exf I/O for atmospheric loading
989      - added exf I/O for runoff data
990      - transfered scaling between exf <-> MITgcm to exf namelist
991    o Adding new verification experiment global_with_exf.
992      This verification experiment is almost identical to the
993      global_ocean.90x40x15 experiment, except that it uses
994      the exf (and cal) package instead of the
995      external_fields_load routine (cf README file).
996    
997    checkpoint46m_post
998    o modified testscript to return -- when there are no lines of "%MON" output
999    o added new flag "quasiHydrostatic" for QH mode
1000      and new routine quasihydrostaticterms()
1001    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
1002      New routine: mom_u_coriolis_nh()
1003    o fixed sign of non-hydrostatic metric terms in u and v equations.
1004      Depend on correct sign of gravitySign.
1005    o added work.pc* to .cvsignore in aim directories using ifc
1006    o introduced flag for controllin non-hydrostatic metric terms
1007    o removed gravitySign from PARM04
1008    o switched to g77/ifc from pgf77 in aim experiments
1009    
1010    checkpoint46l_post
1011    o made convective adjustment work with pressure coordinates:
1012     - changed the direction of k-loop in convective_adjustment.F for the
1013       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1014     - adjusted the reference pressure k-index in convective_adjustment.F
1015     - adjusted the convection condition in convect.F (in analogy to
1016       calc_ivdc.F)
1017     - convective_adjustment no longer computes anything on the halos
1018     - removed the warnings about negative salinity from find_rho.F and
1019       find_alpha.F; instead the new routine look_for_neg_salinity, called
1020       at the beginning of find_rho, find_alpha, and find_beta, does a
1021       check of the entire slice, if CPP-option
1022       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1023    checkpoint46l_pre
1024    
1025    checkpoint46k_post
1026    o fixed the verification/global_ocean.90x40x15 experiment:
1027     - new bathymetry (the world according to A., JMC, and M.)
1028     - new initial fields and forcing fields (*.bin files)
1029     - new POLY3.COEFFS (for the next release one should switch to a full
1030       equation of state: JMD95P or MDJWF)
1031     - fixed several errors and redundancies in the data file
1032     - experiment uses looped cells
1033     - added matlab directory with diagnostic scripts for plotting of output
1034    
1035    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1036     - read AIM physics parameters from a file (data.aimphys)
1037     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1038    
1039    checkpoint46j_post
1040    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1041    o move wVel computation at the end of the time step, in S/R integr_continuity
1042    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1043    o update timeave pkg for wVel diagnostic.
1044    checkpoint46j_pre
1045    
1046    checkpoint46i_post
1047    o Clean up AIM package (and keep the results unchanged):
1048      include CPP_OPTION and use IMPLICT NONE in all routines ;
1049      declare all the variables _RL ; use _d 0 for all numerical constants.
1050      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1051    
1052    checkpoint46h_post
1053    o cleaned up the use of rhoNil and rhoConst.
1054      - rhoNil should only appear in the LINEAR equation of state, everywhere
1055        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1056        and the dynamical equations are all divided by rhoConst
1057    o introduced new parameter rhoConstFresh, a reference density of fresh
1058      water, to remove the fresh water flux's dependence on rhoNil. The default
1059      value is 999.8 kg/m^3
1060    o cleanup up external_forcing.F and external_forcing_surf.F
1061      - can now be used by both OCEANIC and OCEANICP
1062    checkpoint46h_pre
1063    
1064     Added code to convert surface volume flux (fresh water) into
1065     a mass flux when using P coordinates in the ocean (OCEANICP).
1066     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1067    
1068    checkpoint46g_post
1069    o Include a new diagnostic variable phiHydLow for the ocean model
1070      - in z-coordinates, it is the bottom pressure anomaly
1071      - in p-coordinates, it is the sea surface elevation
1072      - in both cases, these variable have global drift, reflecting the mass
1073        drift in z-coordinates and the volume drift in p-coordinates
1074      - included time averaging for phiHydLow, be aware of the drift!
1075    o depth-dependent computation of Bo_surf for pressure coordinates
1076      in the ocean (buoyancyRelation='OCEANICP')
1077      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1078        Theta, Salinity, and Pressure in the parameter list. This routine is
1079        presently contained in find_rho.F. This routine does not give the
1080        correct density for 'POLY3', which would be a z-dependent reference
1081        density.
1082    o cleaned up find_rho
1083      - removed obsolete 'eqn' from the parameter list.
1084    o added two new verification experiments: gop and goz
1085      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1086    checkpoint46g_pre
1087    
1088    checkpoint46f_post
1089    o Enable tangent linear (forward mode) gradient checks:
1090      - extended active file handling to g_... files
1091      - added TANGENT_SIMULATION to theSimulationMode
1092      - extended grdchk package accordingly
1093    o added tangent linear setup in verification/carbon/code_ftl
1094    o added adjoint setup in verification/front_relax/code_ad
1095    
1096    checkpoint46e_post
1097    o Added new equation of state -> MDJWF
1098      - EOS of McDougall et al., 2002, JAOT, submitted
1099      - caveat: the equation of state is only valid for a smaller (more
1100        realistic?) range of values than JMD95P/Z and UNESCO
1101      - added masks to the calculation of pressure in store_pressure
1102      - added more check values for density in check_eos (ini_eos.F), some of
1103        the old check values are out of the range of the MDJWF-eos, so don't
1104        expect perfect matches for those
1105    checkpoint46e_pre
1106    
1107    checkpoint46d_post
1108    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1109      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1110      case of pressure coordinates. eosType='JMD95Z' in
1111      combination with buoyancyRelation='OCEANICP' now causes an error.
1112    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1113      in find_alpha/beta.
1114    checkpoint46d_pre
1115    
1116    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1117      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1118    
1119    checkpoint46c_post
1120    o Changes necessary for ocean in p-coordinates
1121     -  Added new buoyancy relation = 'OCEANICP'
1122     -  Added new parameters = gravitySign (this used to be contained inside
1123        the factor dRdZ which I added when we first switched to R coordinates).
1124     X GM/Redi is not compatible (yet)
1125     X bottom drag and no-slip need to be debugged.
1126    checkpoint46c_pre
1127    
1128    checkpoint46b_post
1129    o Added new equation of state -> JMD95Z and JMD95P
1130      - EOS of Jackett and McDougall, 1995, JAOT
1131      - moved all EOS parameters into EOS.h
1132      - new routines ini_eos.F, store_pressure.F
1133    o Added UNESCO EOS, but not recommended because it requires
1134      in-situ temperature (see JMD95)
1135    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1136      unesco.f to be used with POLY3
1137    checkpoint46b_pre
1138    
1139    checkpoint46a_post
1140    o Added (atmospheric) pressure loading
1141      - new field in FFIELDS.h, etc...
1142      - new cpp flag ATMOSPHERIC_LOADING
1143    o Changed hFacC to _hFacC in calc_phi_hyd.F
1144    o Added SHORTWAVE_HEATING to some files for consistency
1145    checkpoint46a_pre
1146    
1147    checkpoint46
1148    further merges from release1_p5
1149    o new ctrl package
1150      - adopted from ECCO environment to enable optimization
1151      - added Eliassen Palm fluxes to controls
1152    o added Eliassen Palm flux controls to gradient check package
1153    o cost package
1154      - Compatible with new ctrl package
1155      - added Eliassen Palm cost hooks
1156      - modif's of existing cost functions
1157    o Adjoint-related bug fixes in kpp:
1158      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1159      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1160    o autodiff package
1161      - flow directives:
1162        + new for S/R do_the_model_io
1163        + enhanced for S/R checkpoint
1164        + new gmredi.flow
1165      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1166        disable adcommon.h/g_common.h by default.
1167      - fixed problem for adjoint of global_max
1168    o modified verification/carbon/
1169    o New setup for adjoint of global_ocean
1170    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1171    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1172    o incorporated hooks for sponge layer code (external_forcing.F)
1173    
1174    checkpoint45d_post
1175    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1176    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1177      (affects plume_on_slope "cg2d" output)
1178    o add new parameter deltaTfreesurf for free-surface time stepping
1179    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1180    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1181    o change phiMin in exp1 (to agree with documentation)
1182    o add new flags:
1183     - T,S forcing inside/outside Adams-Bashforth
1184     - turn off temp,salt advection and/or forcing
1185     - for each tracer, define internal flag for multiDimAdvection & A-B
1186    o monitor: change definition of KE to check conservation of Energy
1187    
1188    checkpoint45c_post
1189    o Removed f90 comments ("!")
1190    o Modified initialisations to enable exf package for MITgcm
1191      (without invoking ECCO_PACKAGE).
1192    o modifications to gradient check package (Martin Losch)
1193      - enable centered differences
1194      - modified format of standard output
1195    
1196    checkpoint45b_post
1197    o cleaned exchange calls in cg2d
1198    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1199    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1200      to configure barotropic setup (Martin Losch)
1201    o moved some initialisations within bi,bj loop in dynamics
1202      (TAF flow dependency)
1203    o in initialise_varia, moved call packages_init_variables
1204      before convective_adjustment_init
1205      (corresponding adjustment of TAF tape initialisation).
1206    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1207    
1208    checkpoint45a_post
1209    o compute Rho over the whole domain (extend iMin,jMin indices)
1210    o specific exchange for X-slice domain (case Ny=1)
1211    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1212    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1213    
1214    checkpoint44h_post = checkpoint45
1215    o Fix to restore differentiability:
1216      place at which packages_init_variables is called in
1217      initialise_varia is crucial for reverse control flow.
1218    o modifications in GMRedi to enable stable adjoint
1219      (corresponding modif's in thermodynamics, dynamics)
1220    o added missing hook for sponge layer code in external_forcing
1221    o modified test cost functions
1222    o storing in gad_advection (plus removal of write(0,*)!
1223    o missing headers TR1.h added in convective_adjustment routines
1224    o errorMessageUnit set non-equal zero in eeboot
1225      (conflict on some platforms, e.g. IBM SP3)
1226    o modified carbon verif.
1227    
1228    checkpoint44h_pre
1229    o vertical grid option: allow to put the Interface at the middle between
1230      2 cell-centers ; replace delZ in pkg/kpp by drF.
1231    o GM Advective form: Tracers are advected using the residual transport (=
1232      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1233    
1234    checkpoint44g_post
1235    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1236      results) ; ifdef missing in thermodynamics.F
1237    
1238    checkpoint44f_pre,checkpoint44f_post
1239    o added PTRACERS package
1240      This allows an arbitrary number of passive tracers to be integrated
1241      forward simultaneously with the dynamicaly model.
1242      + Implemented so far:
1243        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1244        - I/O and checkpointing
1245        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1246      + Not implemented so far:
1247        - KPP
1248        - OBCS
1249      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1250        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1251        line in data.pkg.
1252      + This package is disabled by default since it increases storage.
1253    
1254    
1255    o testscript: added -cleanup option
1256    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1257                 b) enable to filter 2D fields.
1258    
1259    checkpoint44e_pre,post
1260    o re-wrote convective adjustment to use pre-calculated weights
1261      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1262      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1263      Original calls to convect() still in place.
1264    
1265    chkpt44d_pre,post
1266    o added missing EXCLUDE_MONITOR flags
1267    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1268      (incompatible typ in MIN/MAX expressions caused problems
1269      on IBM SP3)
1270    o in genmake added variable MAKEDEPEND
1271      plus resetting for case SunOS
1272    o added timer_stats.c routine for IBM SP3
1273    o removed variables in dynamics
1274    !!! I forgot to create tag chkpt44d_pre !!!
1275    !!! But chkpt44d_pre = chkpt44c_post    !!!
1276    
1277    o real fresh water flux implemented with non-linear free-surface.
1278    
1279    chkpt44c_pre,post
1280    o few fix (mask in shap_s2, EmPmR in external_field_load,
1281      USE_NATURAL_BCS in solve_for_P);
1282    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1283    
1284    checkpoint44b_pre/_post
1285    o merge of relevant stuff from the ecco-branch:
1286      - genmake: removed $S64 overwrite for case SunOS
1287      - pkg/exf: update and corrections for field swapping and obcs
1288      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1289                  harmonized between ECCO and MITgcm
1290      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1291                      updated checkpointing_lev... lists for obcs
1292      - model/src: minor changes in forward_step, plot_field
1293                   added directive for divided adjoint in the_main_loop
1294      - pkg/mdsio: added mdsio_gl_slice
1295    
1296    o check parameters & config (chkpt44a_pre,post)
1297    o OBC and NonLin_FrSurf.
1298    
1299    checkpoint44
1300  o fix bug in mom_vi_del2uv  o fix bug in mom_vi_del2uv
1301    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1302    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1303    o update AIM experiments (NCEP input files)
1304    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1305    o added some stuff for AD
1306    
1307  checkpoint43  checkpoint43
1308  o added two new advection tests  o added two new advection tests

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