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revision 1.60 by jmc, Sun Feb 10 20:07:14 2002 UTC revision 1.280 by mlosch, Mon Apr 19 22:30:46 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 small modifications in exf-package to increase flexibility:
7      - change climtempfreeze from a constant to a runtime parameter that
8        is specified in data.exf_clim (default = -1.9)
9      - introduce runtime parameter windstressmax (default = 2.0) that is
10        specified in data.exf
11    o fix in pkg/thsice:
12      - update Evap (Tsf changes) to be consistent with Latent heat flux
13      - maintain snow precipitation unchanged (even if Tsf >=0).
14     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
15    
16    checkpoint52m_post
17    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
18      this does not change any of the results, because myIter=0 in swfrac always
19      lead to jwtype=2 (the default anyway), but the call makes little sense
20      as a default
21    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
22    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
23      atmospheric model (AIM) to use it ; add a "slab ocean" component.
24    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
25    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
26    o extending useSingleCpuIO option to work with new exch2 I/O format
27      - old-style, missing-tile I/O is still accessible by defining CPP
28        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
29    o monitor package can write to NetCDF files and/or STDOUT
30    o fix re-definition bug in MNC_GRID_INIT_ALL()
31    o doc/api_reference added
32      - a framework for building an API Reference Manual using all
33        the "protex" comments embedded in the code
34      - see pkg/generic_advdiff, pkg/mnc for examples
35    o MNC:
36      - make myThid the last argument for all subroutines
37      - new default for the grid files: NO halos
38      - add useMNC and other run-time flags
39      - separate per-file-group handling of the unlimited dimension
40      - early initialization of MNC w/ flags read at the eeboot stage
41        and lookup tables set in initialize_fixed
42      - write all MNC output to a freshly-created directory
43    o thermodynamics sea-ice (thsice) is now tested with testreport.
44    o test exp. advect_cs: use the standard cs32 grid ; update output.
45    o Added functionality to grdchk:
46      pick global i,j,k position (or nearest wet) where to perform check.
47    
48    checkpoint52l_post
49    o new land formulation:
50      a) use ground enthalpy as prognostic variable to ensure exact
51         energy conservation.
52      b) account for water temperature and for latent heat of freezing
53         in all processes (rain, run-off, ground storage)
54      c) compute surface and ground temperature implicitly.
55    o aim_v23 modification for new land model:
56      a) Treat separately land / ocean / sea-ice surface fluxes
57         to allow implicit computation of land & sea-ice surface temp.
58      b) add snow precipitation.
59    checkpoint52l_pre
60    
61    o fix problem (when 1 tile is empty) in min/max monitor.
62    o fix bug in timeAve (u,vZetatave in common block)
63    o no restoring terms under ice for pkg/seaice
64    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
65    o bug fix for pkg/seaice pickups
66    o change MNC call locations and add coordinate attributes
67    o mask vorticity at the corner ; affects global_ocean.cs output
68    o fix ini_curvilinear_grid ; test CS experiments with mpi
69    o aim.5l_cs: modify sea-ice fraction input file ; update output
70    o exf: Adding simple range check routine for exf fields after read
71    
72    checkpoint52k_post
73    o removed top-level directory "diags"
74      - we migrated these functions to pkg/timeave a long time ago
75    o fixed bug introduced in pkg/monitor
76    o accuracy ctrlprec = 32 insuffient for gradient checks using
77      averaged fields (I/O via cost_averages)
78      -> use ctrl.h in active_file*.F to control I/O precision.
79    o paramter list of CALL ADTHE_MAIN_LOOP
80    o added initial do_the_model_io to ecco
81    o set all ...Freq to zero after cost_final
82      taveFreq, dumpFreq, pChkptFreq
83    o MAIN and ECCO differentiability restored
84    
85    checkpoint52j_post
86    o fix nchklev in tamc.h for global_ocean...
87    o Bringing flow and store directives up-to-date
88    o Really weird thing!
89      call do_the_model_io from the_main_loop with parameters
90      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
91      TAF places a faulty re-call of initialise_varia
92      after cost_final call which should not be there!
93    checkpoint52j_pre
94    
95    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
96      error messages
97    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
98    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
99      debug output
100    o modfied mdsio_writefield.F to handle non-global files under exch2
101    o update AIM Cubed-Sphere exp (aim.5l_cs):
102      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
103    o update AIM Equatorial Channel exp:
104      use standard aim_v23 pkg and change the SST fields to be more realistic.
105    o globalFile now works with exch2
106    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
107      mon_vort3.F to make exch2 friendly with >1 tile per cube face
108    o limit timeave output for hi-res integrations
109    
110    checkpoint52i_post
111    o removed CPP_EEOPTIONS.h from verification/*/code
112    o updated the tiling for global_ocean_pressure
113    checkpoint52i_pre
114    
115    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
116      the old pkg/aim).
117    
118    checkpoint52h_pre
119    o shortened offending lines in exch2_send_rx?.template
120    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
121    o genmake2: add build & execute test for NetCDF code
122    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
123      old grid files, moved CPP_EEMACROS.h to pkg/exch2
124    o added useSingleCPUIO flag to monitor.F and mon_out.F
125    o added temporary hack for sea-ice dynamics on the cube:
126      metric terms are ignored and it is assumed that
127      there is no sea-ice on cube faces 1, 2, 4, and 5.
128    
129    checkpoint52f_post
130    o added exch2 cube routines to pkg/exch2
131    o modified hs94.cs-32x32x5 to use it
132    o added new grid files to hs94.cs-32x32x5
133    checkpoint52f_pre
134    
135    checkpoint52e_post
136    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
137      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
138    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
139      to work with implicit vertical advection and AB ;
140    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
141    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
142     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
143    checkpoint52e_pre
144    
145    o fix bug in impldiff when Nr=1 or Nr=2.
146    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
147    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
148    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
149      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
150    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
151    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
152    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
153    
154    checkpoint52d_post
155    o re-tiled many expts to allow comparison in multi-processor mode
156      - updated output accordingly
157      - changed hs94.128x64x5 to use intial T from file rather than use the
158        random number generator
159    o add infrastructure in model routines for fizhi and gridalt packages
160    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
161    o changes to permit hi-res, cubed-sphere, configuration
162      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
163      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
164      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
165        of surface winds for the cube
166      (A verification experiment, based on global_ocean.cs32x15, but with
167       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
168       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
169       complete with example surface forcing files and matlab scripts to look
170       at the output and compare it with that of global_ocean.cs32x15.)
171    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
172       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
173       to conform to the common rule.
174    o check-in the first version of the coupler + interfaces for multi-components
175       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
176       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
177       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
178       - ocean and atmos. share the same horizontal grid (no interpolation).
179       - exchanges between component and coupler is done in forward_step
180    o new verification experiment, cpl_aim+ocn:
181       coupled ocean - AIM atmosphere on cs32 grid.
182    
183    checkpoint52d_pre
184    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
185    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
186    
187    checkpoint52c_post
188    o Fixing OPTIONS files for use of exf:
189      - ALLOW_ECCO not needed
190      - ECCO_CPPOPTIONS.h should not be included from
191        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
192        as has been the case in the past
193      - All cal/exf related options are currently set in
194        single header file. Should remain so until we
195        agree on a consistent new policy.
196    o Removed all CPP options for cal package.
197      cal has no more CPP options.
198    o modified STOREs in GAD_ADVECTION
199    o corrected key comp. for passkey
200    
201    checkpoint52b_post
202    o new version: "thsice" of thermodynamic sea-ice pkg:
203     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
204     - modify fluxes but do not change theta directly;
205     - light cleaning of bulk_force pkg (still needed with thsice).
206     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
207       + output_thsice.txt to test thsice & bulk_force pkgs.
208    o put back grid & coriolis monitor output.
209    checkpoint52b_pre
210    
211    o call "do_the_model_io" at the beginning (=> dump initial state)
212    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
213    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
214      (need info on NUMBER_OF_PTRACERS)
215    o missing PTRACERS headers in some routines
216    o default tamc.h in pkg/autodiff supposed to crash
217      to ensure proper customization
218    
219    checkpoint52a_post
220    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
221      - moved surfaceTendencyTice from pkg/seaice to main code
222      - subroutine FREEZE_SURFACE now limits only surface temperature
223        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
224        => new output.txt for global_ocean.cs32x15 & global_with_exf
225      - keep the old version of FREEZE for backward compatibility;
226        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
227      - corresponding modifs for TAF directives
228    o added surface flux output variables to TIMEAVE_STATVARS
229    o time-averaged output for pkg/ptracers
230    o fix problem with ECCO-related divided adjoint
231      snapshot file was missing some ad-variables,
232      but no warning issued by TAF
233    
234    checkpoint52a_pre
235    o some bug fixes for #undef REAL4_IS_SLOW
236    
237    checkpoint52 = ecco_c52_e35
238    o after testing adjoints of checkpoint51u_post
239    
240    checkpoint51u_post
241    o this is the post-merge tag of the ecco-branch
242      (needs another clean checkout and re-testing)
243    o various natl_box_adjoint configs and results
244      but no input fields
245    o obcs adjoint not yet merged!
246    o adding ECCO global 1x1 and 2x2 degree configs
247    o updated/extended some store directives for seaice
248    o pkg/ecco now containes ecco-specific part of cost function
249    o top level routines the_main_loop, forward_step
250      supersede those in model/src/
251      previous input data.cost now in data.ecco
252      (new namelist ecco_cost_nml)
253    o in ctrl/ cleaned some cross-dependencies and updated CPP options
254    
255    checkpoint51t_post
256    o this is the pre-merge tag of the ecco-branch
257    
258    checkpoint51s_post
259    o cleanup: removed various obsolete #define-s
260    o pkg/grdchk
261      - renamed 'ph-grd 3' to 'grad-res'
262      - merged from ecco-branch
263        (remaining bug fixes for obcs gradient checks)
264      - additional high-precision output for testreport
265        (grep for 'precision_grdchk_result')
266    
267    checkpoint51r_post
268    o cleaned up or removed CPP_OPTIONS.h files
269    o updated results for some of the tests to reflect the new
270      optfiles (-ieee: -O0 instead of -O3)
271    
272    checkpoint51q_post
273    o cd_code:
274      - moved cd_scheme.F -> cd_code_scheme.F
275      - separate read_checkpoint from cd_code_ini_vars.F
276      - separated cd_code part from write_checkpoint
277      - updated AD_SOURCE, generated .flow
278      - added CD_CODE_VARS.h to the_main_loop
279      - Moving cd_code specific store dir.s to pkg/cd_code
280    o ctrl package totally restructured
281      - pack/unpack now optional and decoupled from
282        xx_/adxx_ I/O
283      - ctrl_pack/unpack cleaned
284        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
285      - confined inclusion of AD_CONFIG.h to where necessary.
286    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
287    
288    checkpoint51p_post
289    o create initial cd_code package
290      - WARNING: the initialization of fields within packages
291        is broken because INI_FIELDS (where READ_CHECKPOINT is
292        called) is called *before* PACKAGES_INIT_VARIABLES.
293        This seems to be backwards since
294        1) its important to initially zero the entire field including
295           the "halo" region
296        2) zeroing needs to be done *before* reading pickup info
297           and the pickup call might or might not happen in any
298           particular run
299      - this needs an overhaul for R2
300    o cleanup verification/*/code/GMREDI_OPTIONS.h
301    o cleanup testreport
302    
303    checkpoint51o_post
304    o bringing AD-related verif's up to date with genmake2
305      - carbon/
306      - global_ocean.90x40x15/
307      - hs.94.1x64x5/
308      - (front_relax/ )
309    o (more) consistent directory structure for AD-related verif.'s
310    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
311    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
312    o bug fix in find_alpha.F for MDJWF:
313      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
314        change rho -> rho-rhoConst
315      - replace call find_rho to find_rhonum
316    o initialisation of rFlx extended to full array (required by TAF)
317      and shifted to thermodynamics
318    o removed PTRACERS.h in ptracers routine
319    o added surfacetendencyPtr to S/R parameter list pracers_forcing
320    o Correcting initialisations for fVerU, fVerV.
321    o helping TAF to recognize dependency on kUp for
322      fVerU, fVerV
323    o Replacing delZ by delR in pkg/ctrl/
324    checkpoint51o_pre
325    
326    o undid all of cp51 pending some cleanups and discussion
327    o added the [#include "AD_CONFIG.h"] statement to all files that need
328       it for adjoint/tl #defines
329     o re-worked the build logic in genmake2 to support AD_CONFIG.h
330     o removed tools/genmake since it no longer works
331    
332    checkpoint51n_post
333    o modifications to make FREEZE flux visible to pkg/kpp
334      - moved surfaceTendencyTice from pkg/seaice to main code
335      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
336      - subroutine FREEZE now limits only surface temperature
337        (this means new output.txt for global_ocean.90x40x15,
338         global_ocean.cs32x15, and global_with_exf)
339    o added surface flux output variables to TIMEAVE_STATVARS
340    
341    checkpoint51n_pre
342    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
343    o added [#include "AD_CONFIG.h"] to all files that use the following
344      defines:
345      - ALLOW_ADJOINT_RUN
346      - ALLOW_TANGENTLINEAR_RUN
347      - ALLOW_ECCO_OPTIMIZATION
348    
349    checkpoint51m_post
350    o incorporating changes to get TAMC/TAF working in genmake2
351      - added new TAMC/TAF targets to the Makefile
352      - various cleanups related to package handling
353      - these changes should have no impact on the forward model
354    
355    checkpoint51l_post
356    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
357     - faster algorithm for cal_addtime.F
358     - higher precision arithmetic, where needed
359     - pkg/exf *startdate variables changed from calendar date to
360       model integration time
361    
362    checkpoint51l_pre
363    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
364    o enable to apply restoring on S & T only in a latitude band.
365    o update output (external_forcing_surf modif. change truncation errors)
366       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
367    
368    checkpoint51k_post
369    o change default to: useNHMTerms=.FALSE.
370     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
371       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
372     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
373        exp1, ideal_2D_oce
374     - change data file of oceanic exp (leave the results unchanged for now)
375       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
376    o set gravitySign automatically according to the vertical coordinate used
377      (and change sign: back to "logical" value: +1 when R increases downward)
378    o added an include barrier to the default CPP_OPTIONS.h and
379      removed the #include "PACKAGES_CONFIG.h" from it
380    o fix a bug in mom_fluxform (from chk51j_post)
381    
382    checkpoint51j_post
383    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
384    o adjusted some flow directives (dynamics, thermodynamics)
385    o added cubed-sphere case to test cost function
386    o heckpoint_lev?_directives.h now include
387      pkg-specific directives, whenever those are enabled.
388    o Moving pkg-specific flow directives to corresponding pkg
389      Moving pkg-specific differentiation list to corresponding pkg
390      Moving pkg-specific checkpoint-lev storing to corresponding pkg
391      ---> conventions are
392           - pkg_ad.flow
393           - pkg_ad_diff.list
394           - pkg_ad_check_lev?_dir.h
395    
396    checkpoint51i_post
397    o merge of the branch-genmake2
398      - knowingly breaks the older genmake
399      - automatic generation of all ALLOW_${PKG_NAME} defines
400      - new testreport supersedes older testscript
401    o large number of package inclusion and header cleanups
402    checkpoint51i_pre
403    
404    o new output for adjoin of global ocean vector invariant
405    o fix for checkpoint of thermodynamic seaice and bulk_force
406    o Steph gchem various cleanups
407    
408    checkpoint 51h_pre
409    o fixed some single quotes
410    o modify gchem pkg to be more versatile
411    o modifications to clean up dic pkg
412    o add pkg/cfc
413    
414    checkpoint51g_post
415    o provide links for ARPACK and ADM*TLM
416    o start removing verification/vero/
417    o update AD-related stuff
418      (in particular some IF-statements in model/src/ routines)
419    o adding to verification/global_ocean.90x40x15/ adjoint of
420      vector invariant setup
421    
422    checkpoint51f_post
423    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
424    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
425      of tracer Green's fucntions for ocean inversion project.
426    
427    checkpoint51f_pre
428    o Added on-the-fly spatial interpolation capability
429        "USE_EXF_INTERPOLATION" to pkg/exf.
430      - This is a temporary Cartesian-grid hack until
431        the super-duper ESMF coupler becomes available.
432      - See verification/global_with_exf/README for usage example.
433      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
434        flags and modified pkg/seaice accordingly.
435    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
436        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
437        non-local transport term.
438    
439    checkpoint51e_post
440    o pkg/mom_vecinv:
441      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
442      - add time-ave diagnostic of vorticity advection.
443    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
444    o atmospheric geopotential: - include water vapor effect;
445                                - use p^kappa in p* scaling.
446    o land pkg: read initial state from files.
447    o AIM : add stratospheric drag in the upper level
448    
449    checkpoint51d_post
450    o change function ILNBLNK (=> last non-blank char.) to return zero
451      (instead of the string length) when the string. char is empty
452    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
453    o modif's to restore TAMC compatibility
454      - avoid "_d" constructs in PARAMETER declarations
455      - avoid interrupting lines by comment lines
456    o Use cluster local disks for purely local I/O
457      vs. globally visible disks needed for ctrl stuff
458      (merged from ecco-branch)
459      - new active_file_loc... and mdsio_..._loc routines
460      - affected packages: autodiff, ctrl, grdchk, mdsio
461    
462    checkpoint51c_post
463    o introducing integer flag debugLevel
464      - debLevZero: suppress all output
465      - debLevA: standard
466      - debLevB: equivalent to current debugMode=.TRUE.
467    o introducing pathname variable mdsioLocalDir for mdsio
468      that can be specified at runtime
469      (relevant for cluster I/O to local disk)
470    `
471    >>>checkpoint51b_post
472    adjoint of ptracers
473    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
474    o extended state in checkpoint_lev?, etc.
475    o alternative ctrl/cost with tr1 or ptracer
476    o new comlev1_bibj_ptracers
477    o new ptracers.flow
478    o made ptracers_forcing same as external_forcing_s
479    o added verification for adjoint with ptracers
480      - adm. grdchk fail so far
481      - tlm. grdchk OK
482      - checked tapelev/comlev recomputations: OK
483    <<<checkpoint51b_pre
484    
485    checkpoint51a_post
486    o added code for biogeochemistry package
487      - new pkgs: dic, gchem
488      - new subroutine in ptracers
489    o modify code for biogeo packages
490      - in model/src and pkg/ptracers
491    
492    checkpoint51
493    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
494      - autodiff, ctrl, exf, grdchk, seaice
495      kept separate packages
496      - cost, ecco, obcs
497    o updating verification/internal_wave, verification/lab_sea
498      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
499    
500    checkpoint50i_post
501    o Preparing next differentiable checkpoint and sync
502      of MAIN vs. ecco-branch
503      - 1st step: this one is differentiable
504      - 2nd step: next(! not this) checkpoint will have updated packages
505                  from ecco-branch)
506    
507    checkpoint50h_post
508    o new package "land": provide surface BC for AIM.
509    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
510    o AIM: use true log-P extrapolation for near surface temp (= as in
511        F.Molteni paper) ; update aim.5l_cs output.
512    o New variable in PARM03 for more flexible pickups
513    o somewhat cleaned package initialisation sequence for
514      ctrl/ cost/ ecco/ in packages_... routines
515    
516    checkpoint50g_post
517    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
518      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
519      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
520        made the default because of faster convergence than ADI
521    
522    checkpoint50f_post
523    o exf totally restructured
524      - replaced all exf_set_ routines by one generic exf_set_gen.F
525        and made sure it's still differentiable
526      - split exf_getffields.F into new exf_bulkformulae.F
527      - exf_inscal_/exf_outscal_ suffixes consistent with field names
528      - updated adjoint/makefile and relevant verif. accordingly
529    
530    checkpoint50f_pre
531     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
532          + change Evap over land. (update aim.5l_cs output)
533     o added missing .cvsignores and made uniform across expts
534     o changed configuration of tidal_basin_2d expt
535     o added pkg/debug functions for tracing code in fatal crashes
536     o tidied pkg/monitor to use MONITOR_OPTIONS.h
537     o new fn in pkg/monitor to stop model if solution grows too big
538     o removed lots of single quotes from comments
539    
540    checkpoint50e_post
541    o make KPP work with PTRACERS
542     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
543       nearly a copy of kpp_transport_s
544     - there is no analogue to SurfaceTendencyS, so I have to use
545       gPtr(of the surface layer) instead
546    o add a new platform SunFire+mpi (SunFire 15000) to genmake
547    checkpoint50e_pre
548    
549    checkpoint50d_post
550    o change kpp output from multiple-record state files to single-record state
551      files analogous to write_state.F
552    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
553      analogous to the cg2d-related output.
554    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
555      so that writing to internal file fn (with length 512) fails.
556    checkpoint50d_pre
557    
558    checkpoint50c_post
559    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
560    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
561    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
562    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
563    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
564    
565    checkpoint50c_pre
566    Merging from release1_p13:
567    o bug fix for pkg/seaice dynamic solver
568    o Added SEAICE_initialHEFF to pkg/seaice
569    
570    checkpoint50b_post
571    o store u*,v* in gU,V instead of in guNm1,gvNm1
572    o in order to put the momForcing out of the Adams-Bashforth:
573      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
574      to timestep.F
575    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
576    o re-generate output for highly sensitive test-exp:
577       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
578    
579    checkpoint50b_pre
580    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
581    o corrected CPP option mismatch in exf_Bulk... functions for case
582      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
583    
584    checkpoint50a_post
585    o Bug fix for merging between c50 and KPP.
586      ikey was passed from thermodynamics to kpp_calc via
587      common block rather than being recomputed in kpp_calc,
588      in contradiction with new key itdkey.
589      New key ikppkey created, and tamc.h headers updated.
590    
591    checkpoint50
592    - 2nd step of merge with ecco-branch:
593      merge changes in ecco-branch back into main trunk
594    - bug fix in find_alpha
595    - more storing in gmredi_calc_tensor.F, kpp_routines.F
596    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
597    - merged some sliced AD support routines
598    
599    checkpoint49
600    merged from ecco-branch:
601    o exf:
602      - Enable initialisation of forcing fields to constant
603        (runtime) values.
604      - in exf_getffields.F
605        Reduce i-/j-loop to interior domain, discarding overlaps.
606        That also fixes wrong TAF-key computations for key_1, key_2
607        with bulf formulae.
608      - exf_init.F modify #ifdef for exf_init_evap
609      - exf_getffieldrec.F, ctrl_getrec.F
610        The following INT-usages are not safe:
611          fldsecs  = int(fldsecs/fldperiod)*fldperiod
612          fldcount = int(fldsecs/fldperiod) + 1
613        and were modified.
614    o autodiff: checkpoint_lev...
615      - updated storing for bulk formulae (some arrays were missing)
616      - added state for seaice package
617      - synchronized with main branch
618    o DIVA:
619      Modif.s in
620      - the_main_loop.F
621      - the_model_main.F
622      and added cost_final_restore.F cost_final_store.F
623      o With these changes, it is possible to fully separate
624        the first forward run to compute the cost function (mdthe_main_loop)
625        and adjoint runs over individual DIVA intervals (adthe_main_loop)
626        into separate model executions.
627        This enables better tuning of DIVA to given queue sizes.
628      o Loss of cost function value in consecutive DIVA runs is
629        fixed by storing to 'costfinal' file.
630      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
631        beginning/end of adjoint integration is accounted for.
632      The current changes apply to TAF-1.4.26.
633      TAF has one remaining bug, requiring one manual change
634      (see MITgcm manual).
635    o cal: synchronized between MAIN and ecco-branch
636    
637    checkpoint48i_post
638    o Changes to restore differentiability of code w.r.t. previous tag
639      (mostly adding new routines to make list and replacing
640      pressure by totPhiHyd).
641    o Updated and merged grdchk package
642      - has both ADM and TLM checks
643      - works for single- and multi-proc.
644      - output cleaned
645      - worked successfully for parallel DIVA
646    o genmake:
647      - Adding -platform=SP4
648      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
649    o Modif. for DIVA:
650      ctrl_unpack should not be called in intermediate DIVA interval.
651      (similar thing would apply for active files such as
652      tbar, sbar, psbar, which should not be reinitialised;
653      only relevant for ecco-branch)
654    
655    checkpoint48h_post
656    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
657    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
658    o Added SEAICE_initialHEFF to pkg/seaice
659    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
660    
661    checkpoint48g_post
662    --- EOS:
663    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
664      store total Potential in totPhyHyd for diagnostics & EOS.
665    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
666    --- Pressure/geopotential gradient:
667    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
668    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
669      ( changes results of global_ocean_pressure )
670    o NLFS + z-coord.: add eta*Rho' contribution.
671    o accurate phiHyd when using interface-W at the middle between 2 centers
672     ( changes results of ideal_2D_oce )
673    o includes r* 2nd term in potential gradient.
674    
675    checkpoint48f_post
676    Merging from release1_p12:
677    o Modifications for using pkg/exf with pkg/seaice
678      - improved description of the various forcing configurations
679      - added basic radiation bulk formulae to pkg/exf
680      - units/sign fix for evap computation in exf_getffields.F
681      - updated verification/global_with_exf/results/output.txt
682    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
683      (SBO) core products, including oceanic mass, center-of-mass,
684      angular, and bottom pressure (see pkg/sbo/README.sbo).
685    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
686      to avoid negative values in shallow regions.
687      - updated verification/natl_box/results/output.txt
688      - updated verification/lab_sea/results/output.txt
689    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
690    o Added useSingleCpuIO option (see PARAMS.h).
691    o Updated useSingleCpuIO option in mdsio_writefield.F to
692      work with multi-field files, e.g., for single-file pickup.
693    o pkg/seaice:
694      - bug fix in growth.F: QNET for no shortwave case
695      - added HeffFile for specifying initial sea-ice thickness
696      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
697    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
698      kpp_transport_t.F, forward_step.F, and the_main_loop.F
699    o pkg/seaice:
700      - adjoint-friendly modifications
701      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
702    
703    checkpoint48e_post
704    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
705    o dynamics: change definition of computational domain & adapt mom_fluxform
706      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
707    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
708        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
709        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
710        global_ocean.90x40x15 global_with_exf global_ocean_pressure
711        inverted_barometer solid-body.cs-32x32x1
712      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
713    
714    checkpoint48d_post
715    o in preparation for r*:
716     a) use pre-computed gradient of hydrostatic potential:
717        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
718     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
719        => affects results of glob_oce_pressure (different truncation error)  
720      update output.txt of ideal_2D_oce & global_ocean_pressure
721    
722    checkpoint48d_pre
723    o in preparation for r*:
724      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
725      pass the 2 comp. of the grad. as arguments to momentum S/R.
726      but for the moment, only used if it does not change the results.
727    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
728    
729    checkpoint48c_post
730    Modifications in treatment of initial flux forcing controls
731    to avoid extra storing of flux fields.
732    
733    checkpoint48c_pre
734    o Added tidal_basin_2d experiment (currently 1D!)
735    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
736    
737    checkpoint48b_post
738    o r* coordinate added in #ifdef NONLIN_FRSURF block.
739     (modification to pressure gradient not yet implemented)
740    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
741      (for U & V) that are used for vertical advection of momentum.
742    
743    checkpoint48a_post
744    o In preparation for r*, use temp. array to compute vertical transport
745       in flux-form momentum pkg. => change results of few test-exp.
746      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
747                        lab_sea, natl_box & plume_on_slope
748    
749    checkpoint48
750    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
751    
752    checkpoint47j_post
753    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
754    o moved adexch from forward_step to addummy_in_stepping
755    o added exch in ctrl_map_...
756    o aveFreq.=0. at end of cost_final to avoid overwrite in
757      reverse checkpointing loop
758    o Yet more changes in gmredi:
759      * adgmredi_calc_tensor
760        avoiding all recomputation of gmredi_slope_limit
761      * adgmredi_x/y/rtransport
762        added flag for excessive storing to avoid recomp. of
763        u/v/rtans, dTdx/y/z
764        -> this is not really necessary and very memory-consuming
765      * adgmredi_slope_psi:
766        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
767      * gmredi_slope_limit
768        re-activated full calculation of taperfct for case 'ac02'
769    o updating verification/ adjoints of carbon, global_ocean.90x40x15
770    
771    checkpoint47i_post
772    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
773    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
774      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
775    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
776    o gmredi: fix few bugs.
777    
778    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
779    This will be a good checkpoint to plug into the ecco-branch.
780    o few modif.'s to get latest version adjointed
781      (mainly kick out code in ini_linear_phisurf)
782    o modif's to run adjoint with exactConserv
783    o case GM_BOLUS_ADVEC should be cleaned
784      S/R gmredi_slope_psi should be cleaned
785    o verification/carbon now has exactConserv=.TRUE.
786    
787    checkpoint47g_post
788    o time-average AIM output: becomes independent from statvars time-average
789      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
790    o After TAF bug fix:
791      Tested adjoint of gmredi package.
792      Tests were done with checkpoint47 rather than with latest
793      checkpoint47f_post since the latter is broken for the adjoint
794      verification/carbon/ contains both ADM and TLM gradient checks.
795    Here they are, before they get changed/lost/stolen.
796    Mostly modif.'s to fix numerical sensitivities.
797    Gradient checks OK for
798    - GM_taper_scheme:
799      * clipping
800      * ac02
801      * linear
802      * glw91
803      * dm95
804      * ldd97
805    - GMREDI_OPTIONS:
806      * GM_VISBECK_VARIABLE_K
807      * GM_NON_UNITY_DIAGONAL
808      * GM_EXTRA_DIAGONAL
809      * GM_BOLUS_ADVEC
810    in conjunction with data.gmredi parameters to be checked in
811    in a few minutes under verification/carbon/code/
812    
813    checkpoint47f_post
814    Merging from release1_p10:
815    o modifications for using pkg/exf with pkg/seaice
816      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
817        and SEAICE_EXTERNAL_FLUXES
818      - pkg/exf CPP options EXF_READ_EVAP and
819        EXF_NO_BULK_COMPUTATIONS
820      - usage examples are Experiments 8 and 9 in
821        verification/lab_sea/README
822      - verification/lab_sea default experiment now uses
823        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
824    
825    checkpoint47e_post
826    o created a tag prior to creating a branch
827    
828    checkpoint47d_post
829    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
830      at the bottom boundary had an erroneous half slip boundary condition
831    o added bottom drag and no slip boundary condition capabilities to
832      oceanic pressure coordinates code
833    o added new verification experiment global_ocean_pressure, this experiment is
834      also described in the tutorial section of the manual
835    checkpoint47d_pre
836    
837    checkpoint47c_post
838    o Added a verification experiment for a global cubed-sphere ocean run
839      -  verification/global_ocean.cubed32x32x30
840      -  uses pkg/therm_seaice and pkg/bulk_forcing
841    
842    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
843    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
844      when using P-coordinate; only implemented for atmospheric config.
845    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
846      NOTES: requires option NONLIN_FRSURF to be "#define".
847    o update advect_xz/results/output.txt (left from checkpoint44g_post)
848    
849    checkpoint47b_post
850    Merging from release1_p9:
851    o pkg/seaice
852      - removed GOTO's and added taf directives
853      - double precision constants to reduce the g77 (Linux)
854        to F77 (SGI) differences reported in release1_p8
855    o tools/genmake
856      - added SGI options
857    o verification/testscript
858      - updated to that of checkpoint47a_post
859    o verification/global_ocean.90x40x15/input/eedata
860      - modified for SGI f77 compatibility
861    o verification/lab_sea
862      - added description of sea-ice model
863      - added missing matlab routines
864      - added test of thermodynamics parallelization
865    
866    checkpoint47a_post
867    o new pkg: aim_v23
868     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
869       for now, keep the same surface forcing as before.
870     - Part-Cell implemented into AIM; check that Heat & Water are conserved
871     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
872     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
873    o add diagnostic of surface correction term in monitor output
874    
875    o bulk_force and therm_seaice
876    - Two packages:  bulk_force (Bulk forcing)
877      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
878    - Earlier integration from Stephaine Dutkiewicz
879      and Patrick Heimbach.
880    - Two ifdef statements for compile time,
881       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
882    
883    checkpoint47
884    differentiable version of checkpoint46n_post
885    o bug fix in quasihydrostaticterms
886    o * "clean" adjoint code (in terms of extensive recomputations)
887        can now be obtained for all GMREDI options (i.e. for
888        - GM_VISBECK_VARIABLE_K
889        - GM_NON_UNITY_DIAGONAL
890        - GM_EXTRA_DIAGONAL
891        - GM_BOLUS_ADVEC )
892      * However, wrong gradient check problem remains unsolved.
893      * New CPP options have been introduced for different
894        tapering schemes
895    o external_fields_load now part of differentiation list
896    o pressure needs multiple storing;
897      would be nice to have store_pressure at beginning or
898      end of forward_step, e.g. by having phiHyd global (5-dim.)
899      (NB: pressure is needed for certain cases in find_rho,
900      which is also invoked through convective_adjustment).
901    o recomputations in find_rho for cases
902     'JMD95'/'UNESCO' or 'MDJWF' are OK.
903    o #define ATMOSPHERIC_LOADING should be differentiable
904    o ini_forcing shifted to begining of initialise_varia
905    o Incorporating QNVS line search routines into MITgcm
906      (this is separate code, and therefore not under pkg)
907      lsopt/, optim/
908    o Updated verification/carbon/
909      - #define GM_VISBECK_VARIABLE_K
910      - GM_taper_scheme    = 'ldd97'    
911    
912    checkpoint46n_post
913    Merging from release1_p8:
914    o verification/natl_box:
915      updating new external_fields_load routine
916    o New package: pkg/seaice
917      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
918      The sea-ice code is based on Hibler (1979-1980).
919      Two sea-ice dynamic solvers, ADI and LSR, are included.
920      In addition to computing prognostic sea-ice variables and diagnosing
921      the forcing/external data fields that drive the ocean model,
922      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
923      The implied surface heat flux is then stored in variable
924      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
925      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
926      non-local transport term.  Because this call precedes model
927      thermodynamics, temperature under sea-ice may not be "exactly" at
928      the freezing point by the time theta is dumped or time-averaged.
929      N.B.: fairly large differences in accuracy occur across
930            different platforms/compilers; comparison between
931            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
932            generated output gives:
933       T           S           U           V
934      C D M    c        m  s        m  s        m  s        m  s
935      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
936      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
937      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
938    
939      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
940    o GAD:
941      - generated new common blocks to account for call of
942        same gad routines with differing traceridentities
943        (needed to modify tracerIdentity indices in GAD.h)
944      - generated separate common blocks for case useCubedSphereExchange
945        (Department of Futurology)
946      - parameter lists to gmredi_?transport: added tracerIdentity
947      - added new key indices to tamc.h
948    o external_fields_load:
949      - added this routine to TAF list
950      - needed to make some common blocks global and additional storing
951        along the same lines as exf package (checkpoint_lev?_directives.h)
952    o exf:
953      updated external forcing package
954      - bug fixes carried over from ecco-branch
955        (missing OBCS_OPTIONS.h in two routines)
956      - enable easy to use "no forcing".
957      - added exf I/O for atmospheric loading
958      - added exf I/O for runoff data
959      - transfered scaling between exf <-> MITgcm to exf namelist
960    o Adding new verification experiment global_with_exf.
961      This verification experiment is almost identical to the
962      global_ocean.90x40x15 experiment, except that it uses
963      the exf (and cal) package instead of the
964      external_fields_load routine (cf README file).
965    
966    checkpoint46m_post
967    o modified testscript to return -- when there are no lines of "%MON" output
968    o added new flag "quasiHydrostatic" for QH mode
969      and new routine quasihydrostaticterms()
970    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
971      New routine: mom_u_coriolis_nh()
972    o fixed sign of non-hydrostatic metric terms in u and v equations.
973      Depend on correct sign of gravitySign.
974    o added work.pc* to .cvsignore in aim directories using ifc
975    o introduced flag for controllin non-hydrostatic metric terms
976    o removed gravitySign from PARM04
977    o switched to g77/ifc from pgf77 in aim experiments
978    
979    checkpoint46l_post
980    o made convective adjustment work with pressure coordinates:
981     - changed the direction of k-loop in convective_adjustment.F for the
982       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
983     - adjusted the reference pressure k-index in convective_adjustment.F
984     - adjusted the convection condition in convect.F (in analogy to
985       calc_ivdc.F)
986     - convective_adjustment no longer computes anything on the halos
987     - removed the warnings about negative salinity from find_rho.F and
988       find_alpha.F; instead the new routine look_for_neg_salinity, called
989       at the beginning of find_rho, find_alpha, and find_beta, does a
990       check of the entire slice, if CPP-option
991       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
992    checkpoint46l_pre
993    
994    checkpoint46k_post
995    o fixed the verification/global_ocean.90x40x15 experiment:
996     - new bathymetry (the world according to A., JMC, and M.)
997     - new initial fields and forcing fields (*.bin files)
998     - new POLY3.COEFFS (for the next release one should switch to a full
999       equation of state: JMD95P or MDJWF)
1000     - fixed several errors and redundancies in the data file
1001     - experiment uses looped cells
1002     - added matlab directory with diagnostic scripts for plotting of output
1003    
1004    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1005     - read AIM physics parameters from a file (data.aimphys)
1006     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1007    
1008    checkpoint46j_post
1009    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1010    o move wVel computation at the end of the time step, in S/R integr_continuity
1011    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1012    o update timeave pkg for wVel diagnostic.
1013    checkpoint46j_pre
1014    
1015    checkpoint46i_post
1016    o Clean up AIM package (and keep the results unchanged):
1017      include CPP_OPTION and use IMPLICT NONE in all routines ;
1018      declare all the variables _RL ; use _d 0 for all numerical constants.
1019      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1020    
1021    checkpoint46h_post
1022    o cleaned up the use of rhoNil and rhoConst.
1023      - rhoNil should only appear in the LINEAR equation of state, everywhere
1024        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1025        and the dynamical equations are all divided by rhoConst
1026    o introduced new parameter rhoConstFresh, a reference density of fresh
1027      water, to remove the fresh water flux's dependence on rhoNil. The default
1028      value is 999.8 kg/m^3
1029    o cleanup up external_forcing.F and external_forcing_surf.F
1030      - can now be used by both OCEANIC and OCEANICP
1031    checkpoint46h_pre
1032    
1033     Added code to convert surface volume flux (fresh water) into
1034     a mass flux when using P coordinates in the ocean (OCEANICP).
1035     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1036    
1037    checkpoint46g_post
1038    o Include a new diagnostic variable phiHydLow for the ocean model
1039      - in z-coordinates, it is the bottom pressure anomaly
1040      - in p-coordinates, it is the sea surface elevation
1041      - in both cases, these variable have global drift, reflecting the mass
1042        drift in z-coordinates and the volume drift in p-coordinates
1043      - included time averaging for phiHydLow, be aware of the drift!
1044    o depth-dependent computation of Bo_surf for pressure coordinates
1045      in the ocean (buoyancyRelation='OCEANICP')
1046      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1047        Theta, Salinity, and Pressure in the parameter list. This routine is
1048        presently contained in find_rho.F. This routine does not give the
1049        correct density for 'POLY3', which would be a z-dependent reference
1050        density.
1051    o cleaned up find_rho
1052      - removed obsolete 'eqn' from the parameter list.
1053    o added two new verification experiments: gop and goz
1054      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1055    checkpoint46g_pre
1056    
1057    checkpoint46f_post
1058    o Enable tangent linear (forward mode) gradient checks:
1059      - extended active file handling to g_... files
1060      - added TANGENT_SIMULATION to theSimulationMode
1061      - extended grdchk package accordingly
1062    o added tangent linear setup in verification/carbon/code_ftl
1063    o added adjoint setup in verification/front_relax/code_ad
1064    
1065    checkpoint46e_post
1066    o Added new equation of state -> MDJWF
1067      - EOS of McDougall et al., 2002, JAOT, submitted
1068      - caveat: the equation of state is only valid for a smaller (more
1069        realistic?) range of values than JMD95P/Z and UNESCO
1070      - added masks to the calculation of pressure in store_pressure
1071      - added more check values for density in check_eos (ini_eos.F), some of
1072        the old check values are out of the range of the MDJWF-eos, so don't
1073        expect perfect matches for those
1074    checkpoint46e_pre
1075    
1076    checkpoint46d_post
1077    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1078      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1079      case of pressure coordinates. eosType='JMD95Z' in
1080      combination with buoyancyRelation='OCEANICP' now causes an error.
1081    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1082      in find_alpha/beta.
1083    checkpoint46d_pre
1084    
1085    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1086      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1087    
1088    checkpoint46c_post
1089    o Changes necessary for ocean in p-coordinates
1090     -  Added new buoyancy relation = 'OCEANICP'
1091     -  Added new parameters = gravitySign (this used to be contained inside
1092        the factor dRdZ which I added when we first switched to R coordinates).
1093     X GM/Redi is not compatible (yet)
1094     X bottom drag and no-slip need to be debugged.
1095    checkpoint46c_pre
1096    
1097    checkpoint46b_post
1098    o Added new equation of state -> JMD95Z and JMD95P
1099      - EOS of Jackett and McDougall, 1995, JAOT
1100      - moved all EOS parameters into EOS.h
1101      - new routines ini_eos.F, store_pressure.F
1102    o Added UNESCO EOS, but not recommended because it requires
1103      in-situ temperature (see JMD95)
1104    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1105      unesco.f to be used with POLY3
1106    checkpoint46b_pre
1107    
1108    checkpoint46a_post
1109    o Added (atmospheric) pressure loading
1110      - new field in FFIELDS.h, etc...
1111      - new cpp flag ATMOSPHERIC_LOADING
1112    o Changed hFacC to _hFacC in calc_phi_hyd.F
1113    o Added SHORTWAVE_HEATING to some files for consistency
1114    checkpoint46a_pre
1115    
1116    checkpoint46
1117    further merges from release1_p5
1118    o new ctrl package
1119      - adopted from ECCO environment to enable optimization
1120      - added Eliassen Palm fluxes to controls
1121    o added Eliassen Palm flux controls to gradient check package
1122    o cost package
1123      - Compatible with new ctrl package
1124      - added Eliassen Palm cost hooks
1125      - modif's of existing cost functions
1126    o Adjoint-related bug fixes in kpp:
1127      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1128      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1129    o autodiff package
1130      - flow directives:
1131        + new for S/R do_the_model_io
1132        + enhanced for S/R checkpoint
1133        + new gmredi.flow
1134      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1135        disable adcommon.h/g_common.h by default.
1136      - fixed problem for adjoint of global_max
1137    o modified verification/carbon/
1138    o New setup for adjoint of global_ocean
1139    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1140    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1141    o incorporated hooks for sponge layer code (external_forcing.F)
1142    
1143    checkpoint45d_post
1144    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1145    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1146      (affects plume_on_slope "cg2d" output)
1147    o add new parameter deltaTfreesurf for free-surface time stepping
1148    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1149    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1150    o change phiMin in exp1 (to agree with documentation)
1151    o add new flags:
1152     - T,S forcing inside/outside Adams-Bashforth
1153     - turn off temp,salt advection and/or forcing
1154     - for each tracer, define internal flag for multiDimAdvection & A-B
1155    o monitor: change definition of KE to check conservation of Energy
1156    
1157    checkpoint45c_post
1158    o Removed f90 comments ("!")
1159    o Modified initialisations to enable exf package for MITgcm
1160      (without invoking ECCO_PACKAGE).
1161    o modifications to gradient check package (Martin Losch)
1162      - enable centered differences
1163      - modified format of standard output
1164    
1165    checkpoint45b_post
1166    o cleaned exchange calls in cg2d
1167    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1168    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1169      to configure barotropic setup (Martin Losch)
1170    o moved some initialisations within bi,bj loop in dynamics
1171      (TAF flow dependency)
1172    o in initialise_varia, moved call packages_init_variables
1173      before convective_adjustment_init
1174      (corresponding adjustment of TAF tape initialisation).
1175    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1176    
1177    checkpoint45a_post
1178    o compute Rho over the whole domain (extend iMin,jMin indices)
1179    o specific exchange for X-slice domain (case Ny=1)
1180    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1181    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1182    
1183    checkpoint44h_post = checkpoint45
1184    o Fix to restore differentiability:
1185      place at which packages_init_variables is called in
1186      initialise_varia is crucial for reverse control flow.
1187    o modifications in GMRedi to enable stable adjoint
1188      (corresponding modif's in thermodynamics, dynamics)
1189    o added missing hook for sponge layer code in external_forcing
1190    o modified test cost functions
1191    o storing in gad_advection (plus removal of write(0,*)!
1192    o missing headers TR1.h added in convective_adjustment routines
1193    o errorMessageUnit set non-equal zero in eeboot
1194      (conflict on some platforms, e.g. IBM SP3)
1195    o modified carbon verif.
1196    
1197    checkpoint44h_pre
1198    o vertical grid option: allow to put the Interface at the middle between
1199      2 cell-centers ; replace delZ in pkg/kpp by drF.
1200    o GM Advective form: Tracers are advected using the residual transport (=
1201      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1202    
1203    checkpoint44g_post
1204    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1205      results) ; ifdef missing in thermodynamics.F
1206    
1207    checkpoint44f_pre,checkpoint44f_post
1208    o added PTRACERS package
1209      This allows an arbitrary number of passive tracers to be integrated
1210      forward simultaneously with the dynamicaly model.
1211      + Implemented so far:
1212        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1213        - I/O and checkpointing
1214        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1215      + Not implemented so far:
1216        - KPP
1217        - OBCS
1218      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1219        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1220        line in data.pkg.
1221      + This package is disabled by default since it increases storage.
1222    
1223    
1224    o testscript: added -cleanup option
1225    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1226                 b) enable to filter 2D fields.
1227    
1228    checkpoint44e_pre,post
1229    o re-wrote convective adjustment to use pre-calculated weights
1230      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1231      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1232      Original calls to convect() still in place.
1233    
1234    chkpt44d_pre,post
1235    o added missing EXCLUDE_MONITOR flags
1236    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1237      (incompatible typ in MIN/MAX expressions caused problems
1238      on IBM SP3)
1239    o in genmake added variable MAKEDEPEND
1240      plus resetting for case SunOS
1241    o added timer_stats.c routine for IBM SP3
1242    o removed variables in dynamics
1243    !!! I forgot to create tag chkpt44d_pre !!!
1244    !!! But chkpt44d_pre = chkpt44c_post    !!!
1245    
1246  o real fresh water flux implemented with non-linear free-surface.  o real fresh water flux implemented with non-linear free-surface.
1247    
1248  chkpt44c_pre,post  chkpt44c_pre,post

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