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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.275 by jmc, Thu Apr 8 00:25:10 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 re-work pkg/thsice interface with ocean & bulk_force pkg to allow
7      atmospheric model (AIM) to use it ; add a "slab ocean" component.
8    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
9    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
10    o extending useSingleCpuIO option to work with new exch2 I/O format
11      - old-style, missing-tile I/O is still accessible by defining CPP
12        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
13    o monitor package can write to NetCDF files and/or STDOUT
14    o fix re-definition bug in MNC_GRID_INIT_ALL()
15    o doc/api_reference added
16      - a framework for building an API Reference Manual using all
17        the "protex" comments embedded in the code
18      - see pkg/generic_advdiff, pkg/mnc for examples
19    o MNC:
20      - make myThid the last argument for all subroutines
21      - new default for the grid files: NO halos
22      - add useMNC and other run-time flags
23      - separate per-file-group handling of the unlimited dimension
24      - early initialization of MNC w/ flags read at the eeboot stage
25        and lookup tables set in initialize_fixed
26      - write all MNC output to a freshly-created directory
27    o thermodynamics sea-ice (thsice) is now tested with testreport.
28    o test exp. advect_cs: use the standard cs32 grid ; update output.
29    o Added functionality to grdchk:
30      pick global i,j,k position (or nearest wet) where to perform check.
31    
32    checkpoint52l_post
33    o new land formulation:
34      a) use ground enthalpy as prognostic variable to ensure exact
35         energy conservation.
36      b) account for water temperature and for latent heat of freezing
37         in all processes (rain, run-off, ground storage)
38      c) compute surface and ground temperature implicitly.
39    o aim_v23 modification for new land model:
40      a) Treat separately land / ocean / sea-ice surface fluxes
41         to allow implicit computation of land & sea-ice surface temp.
42      b) add snow precipitation.
43    checkpoint52l_pre
44    
45    o fix problem (when 1 tile is empty) in min/max monitor.
46    o fix bug in timeAve (u,vZetatave in common block)
47    o no restoring terms under ice for pkg/seaice
48    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
49    o bug fix for pkg/seaice pickups
50    o change MNC call locations and add coordinate attributes
51    o mask vorticity at the corner ; affects global_ocean.cs output
52    o fix ini_curvilinear_grid ; test CS experiments with mpi
53    o aim.5l_cs: modify sea-ice fraction input file ; update output
54    o exf: Adding simple range check routine for exf fields after read
55    
56    checkpoint52k_post
57    o removed top-level directory "diags"
58      - we migrated these functions to pkg/timeave a long time ago
59    o fixed bug introduced in pkg/monitor
60    o accuracy ctrlprec = 32 insuffient for gradient checks using
61      averaged fields (I/O via cost_averages)
62      -> use ctrl.h in active_file*.F to control I/O precision.
63    o paramter list of CALL ADTHE_MAIN_LOOP
64    o added initial do_the_model_io to ecco
65    o set all ...Freq to zero after cost_final
66      taveFreq, dumpFreq, pChkptFreq
67    o MAIN and ECCO differentiability restored
68    
69    checkpoint52j_post
70    o fix nchklev in tamc.h for global_ocean...
71    o Bringing flow and store directives up-to-date
72    o Really weird thing!
73      call do_the_model_io from the_main_loop with parameters
74      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
75      TAF places a faulty re-call of initialise_varia
76      after cost_final call which should not be there!
77    checkpoint52j_pre
78    
79    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
80      error messages
81    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
82    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
83      debug output
84    o modfied mdsio_writefield.F to handle non-global files under exch2
85    o update AIM Cubed-Sphere exp (aim.5l_cs):
86      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
87    o update AIM Equatorial Channel exp:
88      use standard aim_v23 pkg and change the SST fields to be more realistic.
89    o globalFile now works with exch2
90    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
91      mon_vort3.F to make exch2 friendly with >1 tile per cube face
92    o limit timeave output for hi-res integrations
93    
94    checkpoint52i_post
95    o removed CPP_EEOPTIONS.h from verification/*/code
96    o updated the tiling for global_ocean_pressure
97    checkpoint52i_pre
98    
99    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
100      the old pkg/aim).
101    
102    checkpoint52h_pre
103    o shortened offending lines in exch2_send_rx?.template
104    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
105    o genmake2: add build & execute test for NetCDF code
106    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
107      old grid files, moved CPP_EEMACROS.h to pkg/exch2
108    o added useSingleCPUIO flag to monitor.F and mon_out.F
109    o added temporary hack for sea-ice dynamics on the cube:
110      metric terms are ignored and it is assumed that
111      there is no sea-ice on cube faces 1, 2, 4, and 5.
112    
113    checkpoint52f_post
114    o added exch2 cube routines to pkg/exch2
115    o modified hs94.cs-32x32x5 to use it
116    o added new grid files to hs94.cs-32x32x5
117    checkpoint52f_pre
118    
119    checkpoint52e_post
120    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
121      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
122    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
123      to work with implicit vertical advection and AB ;
124    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
125    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
126     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
127    checkpoint52e_pre
128    
129    o fix bug in impldiff when Nr=1 or Nr=2.
130    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
131    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
132    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
133      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
134    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
135    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
136    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
137    
138    checkpoint52d_post
139    o re-tiled many expts to allow comparison in multi-processor mode
140      - updated output accordingly
141      - changed hs94.128x64x5 to use intial T from file rather than use the
142        random number generator
143    o add infrastructure in model routines for fizhi and gridalt packages
144    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
145    o changes to permit hi-res, cubed-sphere, configuration
146      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
147      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
148      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
149        of surface winds for the cube
150      (A verification experiment, based on global_ocean.cs32x15, but with
151       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
152       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
153       complete with example surface forcing files and matlab scripts to look
154       at the output and compare it with that of global_ocean.cs32x15.)
155    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
156       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
157       to conform to the common rule.
158    o check-in the first version of the coupler + interfaces for multi-components
159       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
160       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
161       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
162       - ocean and atmos. share the same horizontal grid (no interpolation).
163       - exchanges between component and coupler is done in forward_step
164    o new verification experiment, cpl_aim+ocn:
165       coupled ocean - AIM atmosphere on cs32 grid.
166    
167    checkpoint52d_pre
168    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
169    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
170    
171    checkpoint52c_post
172    o Fixing OPTIONS files for use of exf:
173      - ALLOW_ECCO not needed
174      - ECCO_CPPOPTIONS.h should not be included from
175        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
176        as has been the case in the past
177      - All cal/exf related options are currently set in
178        single header file. Should remain so until we
179        agree on a consistent new policy.
180    o Removed all CPP options for cal package.
181      cal has no more CPP options.
182    o modified STOREs in GAD_ADVECTION
183    o corrected key comp. for passkey
184    
185    checkpoint52b_post
186    o new version: "thsice" of thermodynamic sea-ice pkg:
187     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
188     - modify fluxes but do not change theta directly;
189     - light cleaning of bulk_force pkg (still needed with thsice).
190     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
191       + output_thsice.txt to test thsice & bulk_force pkgs.
192    o put back grid & coriolis monitor output.
193    checkpoint52b_pre
194    
195    o call "do_the_model_io" at the beginning (=> dump initial state)
196    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
197    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
198      (need info on NUMBER_OF_PTRACERS)
199    o missing PTRACERS headers in some routines
200    o default tamc.h in pkg/autodiff supposed to crash
201      to ensure proper customization
202    
203    checkpoint52a_post
204    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
205      - moved surfaceTendencyTice from pkg/seaice to main code
206      - subroutine FREEZE_SURFACE now limits only surface temperature
207        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
208        => new output.txt for global_ocean.cs32x15 & global_with_exf
209      - keep the old version of FREEZE for backward compatibility;
210        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
211      - corresponding modifs for TAF directives
212    o added surface flux output variables to TIMEAVE_STATVARS
213    o time-averaged output for pkg/ptracers
214    o fix problem with ECCO-related divided adjoint
215      snapshot file was missing some ad-variables,
216      but no warning issued by TAF
217    
218    checkpoint52a_pre
219    o some bug fixes for #undef REAL4_IS_SLOW
220    
221    checkpoint52 = ecco_c52_e35
222    o after testing adjoints of checkpoint51u_post
223    
224    checkpoint51u_post
225    o this is the post-merge tag of the ecco-branch
226      (needs another clean checkout and re-testing)
227    o various natl_box_adjoint configs and results
228      but no input fields
229    o obcs adjoint not yet merged!
230    o adding ECCO global 1x1 and 2x2 degree configs
231    o updated/extended some store directives for seaice
232    o pkg/ecco now containes ecco-specific part of cost function
233    o top level routines the_main_loop, forward_step
234      supersede those in model/src/
235      previous input data.cost now in data.ecco
236      (new namelist ecco_cost_nml)
237    o in ctrl/ cleaned some cross-dependencies and updated CPP options
238    
239    checkpoint51t_post
240    o this is the pre-merge tag of the ecco-branch
241    
242    checkpoint51s_post
243    o cleanup: removed various obsolete #define-s
244    o pkg/grdchk
245      - renamed 'ph-grd 3' to 'grad-res'
246      - merged from ecco-branch
247        (remaining bug fixes for obcs gradient checks)
248      - additional high-precision output for testreport
249        (grep for 'precision_grdchk_result')
250    
251    checkpoint51r_post
252    o cleaned up or removed CPP_OPTIONS.h files
253    o updated results for some of the tests to reflect the new
254      optfiles (-ieee: -O0 instead of -O3)
255    
256    checkpoint51q_post
257    o cd_code:
258      - moved cd_scheme.F -> cd_code_scheme.F
259      - separate read_checkpoint from cd_code_ini_vars.F
260      - separated cd_code part from write_checkpoint
261      - updated AD_SOURCE, generated .flow
262      - added CD_CODE_VARS.h to the_main_loop
263      - Moving cd_code specific store dir.s to pkg/cd_code
264    o ctrl package totally restructured
265      - pack/unpack now optional and decoupled from
266        xx_/adxx_ I/O
267      - ctrl_pack/unpack cleaned
268        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
269      - confined inclusion of AD_CONFIG.h to where necessary.
270    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
271    
272    checkpoint51p_post
273    o create initial cd_code package
274      - WARNING: the initialization of fields within packages
275        is broken because INI_FIELDS (where READ_CHECKPOINT is
276        called) is called *before* PACKAGES_INIT_VARIABLES.
277        This seems to be backwards since
278        1) its important to initially zero the entire field including
279           the "halo" region
280        2) zeroing needs to be done *before* reading pickup info
281           and the pickup call might or might not happen in any
282           particular run
283      - this needs an overhaul for R2
284    o cleanup verification/*/code/GMREDI_OPTIONS.h
285    o cleanup testreport
286    
287    checkpoint51o_post
288    o bringing AD-related verif's up to date with genmake2
289      - carbon/
290      - global_ocean.90x40x15/
291      - hs.94.1x64x5/
292      - (front_relax/ )
293    o (more) consistent directory structure for AD-related verif.'s
294    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
295    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
296    o bug fix in find_alpha.F for MDJWF:
297      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
298        change rho -> rho-rhoConst
299      - replace call find_rho to find_rhonum
300    o initialisation of rFlx extended to full array (required by TAF)
301      and shifted to thermodynamics
302    o removed PTRACERS.h in ptracers routine
303    o added surfacetendencyPtr to S/R parameter list pracers_forcing
304    o Correcting initialisations for fVerU, fVerV.
305    o helping TAF to recognize dependency on kUp for
306      fVerU, fVerV
307    o Replacing delZ by delR in pkg/ctrl/
308    checkpoint51o_pre
309    
310    o undid all of cp51 pending some cleanups and discussion
311    o added the [#include "AD_CONFIG.h"] statement to all files that need
312       it for adjoint/tl #defines
313     o re-worked the build logic in genmake2 to support AD_CONFIG.h
314     o removed tools/genmake since it no longer works
315    
316    checkpoint51n_post
317    o modifications to make FREEZE flux visible to pkg/kpp
318      - moved surfaceTendencyTice from pkg/seaice to main code
319      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
320      - subroutine FREEZE now limits only surface temperature
321        (this means new output.txt for global_ocean.90x40x15,
322         global_ocean.cs32x15, and global_with_exf)
323    o added surface flux output variables to TIMEAVE_STATVARS
324    
325    checkpoint51n_pre
326    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
327    o added [#include "AD_CONFIG.h"] to all files that use the following
328      defines:
329      - ALLOW_ADJOINT_RUN
330      - ALLOW_TANGENTLINEAR_RUN
331      - ALLOW_ECCO_OPTIMIZATION
332    
333    checkpoint51m_post
334    o incorporating changes to get TAMC/TAF working in genmake2
335      - added new TAMC/TAF targets to the Makefile
336      - various cleanups related to package handling
337      - these changes should have no impact on the forward model
338    
339    checkpoint51l_post
340    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
341     - faster algorithm for cal_addtime.F
342     - higher precision arithmetic, where needed
343     - pkg/exf *startdate variables changed from calendar date to
344       model integration time
345    
346    checkpoint51l_pre
347    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
348    o enable to apply restoring on S & T only in a latitude band.
349    o update output (external_forcing_surf modif. change truncation errors)
350       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
351    
352    checkpoint51k_post
353    o change default to: useNHMTerms=.FALSE.
354     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
355       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
356     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
357        exp1, ideal_2D_oce
358     - change data file of oceanic exp (leave the results unchanged for now)
359       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
360    o set gravitySign automatically according to the vertical coordinate used
361      (and change sign: back to "logical" value: +1 when R increases downward)
362    o added an include barrier to the default CPP_OPTIONS.h and
363      removed the #include "PACKAGES_CONFIG.h" from it
364    o fix a bug in mom_fluxform (from chk51j_post)
365    
366    checkpoint51j_post
367    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
368    o adjusted some flow directives (dynamics, thermodynamics)
369    o added cubed-sphere case to test cost function
370    o heckpoint_lev?_directives.h now include
371      pkg-specific directives, whenever those are enabled.
372    o Moving pkg-specific flow directives to corresponding pkg
373      Moving pkg-specific differentiation list to corresponding pkg
374      Moving pkg-specific checkpoint-lev storing to corresponding pkg
375      ---> conventions are
376           - pkg_ad.flow
377           - pkg_ad_diff.list
378           - pkg_ad_check_lev?_dir.h
379    
380    checkpoint51i_post
381    o merge of the branch-genmake2
382      - knowingly breaks the older genmake
383      - automatic generation of all ALLOW_${PKG_NAME} defines
384      - new testreport supersedes older testscript
385    o large number of package inclusion and header cleanups
386    checkpoint51i_pre
387    
388    o new output for adjoin of global ocean vector invariant
389    o fix for checkpoint of thermodynamic seaice and bulk_force
390    o Steph gchem various cleanups
391    
392    checkpoint 51h_pre
393    o fixed some single quotes
394    o modify gchem pkg to be more versatile
395    o modifications to clean up dic pkg
396    o add pkg/cfc
397    
398    checkpoint51g_post
399    o provide links for ARPACK and ADM*TLM
400    o start removing verification/vero/
401    o update AD-related stuff
402      (in particular some IF-statements in model/src/ routines)
403    o adding to verification/global_ocean.90x40x15/ adjoint of
404      vector invariant setup
405    
406    checkpoint51f_post
407    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
408    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
409      of tracer Green's fucntions for ocean inversion project.
410    
411    checkpoint51f_pre
412    o Added on-the-fly spatial interpolation capability
413        "USE_EXF_INTERPOLATION" to pkg/exf.
414      - This is a temporary Cartesian-grid hack until
415        the super-duper ESMF coupler becomes available.
416      - See verification/global_with_exf/README for usage example.
417      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
418        flags and modified pkg/seaice accordingly.
419    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
420        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
421        non-local transport term.
422    
423    checkpoint51e_post
424    o pkg/mom_vecinv:
425      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
426      - add time-ave diagnostic of vorticity advection.
427    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
428    o atmospheric geopotential: - include water vapor effect;
429                                - use p^kappa in p* scaling.
430    o land pkg: read initial state from files.
431    o AIM : add stratospheric drag in the upper level
432    
433    checkpoint51d_post
434    o change function ILNBLNK (=> last non-blank char.) to return zero
435      (instead of the string length) when the string. char is empty
436    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
437    o modif's to restore TAMC compatibility
438      - avoid "_d" constructs in PARAMETER declarations
439      - avoid interrupting lines by comment lines
440    o Use cluster local disks for purely local I/O
441      vs. globally visible disks needed for ctrl stuff
442      (merged from ecco-branch)
443      - new active_file_loc... and mdsio_..._loc routines
444      - affected packages: autodiff, ctrl, grdchk, mdsio
445    
446    checkpoint51c_post
447    o introducing integer flag debugLevel
448      - debLevZero: suppress all output
449      - debLevA: standard
450      - debLevB: equivalent to current debugMode=.TRUE.
451    o introducing pathname variable mdsioLocalDir for mdsio
452      that can be specified at runtime
453      (relevant for cluster I/O to local disk)
454    `
455    >>>checkpoint51b_post
456    adjoint of ptracers
457    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
458    o extended state in checkpoint_lev?, etc.
459    o alternative ctrl/cost with tr1 or ptracer
460    o new comlev1_bibj_ptracers
461    o new ptracers.flow
462    o made ptracers_forcing same as external_forcing_s
463    o added verification for adjoint with ptracers
464      - adm. grdchk fail so far
465      - tlm. grdchk OK
466      - checked tapelev/comlev recomputations: OK
467    <<<checkpoint51b_pre
468    
469    checkpoint51a_post
470    o added code for biogeochemistry package
471      - new pkgs: dic, gchem
472      - new subroutine in ptracers
473    o modify code for biogeo packages
474      - in model/src and pkg/ptracers
475    
476    checkpoint51
477    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
478      - autodiff, ctrl, exf, grdchk, seaice
479      kept separate packages
480      - cost, ecco, obcs
481    o updating verification/internal_wave, verification/lab_sea
482      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
483    
484    checkpoint50i_post
485    o Preparing next differentiable checkpoint and sync
486      of MAIN vs. ecco-branch
487      - 1st step: this one is differentiable
488      - 2nd step: next(! not this) checkpoint will have updated packages
489                  from ecco-branch)
490    
491    checkpoint50h_post
492    o new package "land": provide surface BC for AIM.
493    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
494    o AIM: use true log-P extrapolation for near surface temp (= as in
495        F.Molteni paper) ; update aim.5l_cs output.
496    o New variable in PARM03 for more flexible pickups
497    o somewhat cleaned package initialisation sequence for
498      ctrl/ cost/ ecco/ in packages_... routines
499    
500    checkpoint50g_post
501    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
502      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
503      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
504        made the default because of faster convergence than ADI
505    
506    checkpoint50f_post
507    o exf totally restructured
508      - replaced all exf_set_ routines by one generic exf_set_gen.F
509        and made sure it's still differentiable
510      - split exf_getffields.F into new exf_bulkformulae.F
511      - exf_inscal_/exf_outscal_ suffixes consistent with field names
512      - updated adjoint/makefile and relevant verif. accordingly
513    
514    checkpoint50f_pre
515     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
516          + change Evap over land. (update aim.5l_cs output)
517     o added missing .cvsignores and made uniform across expts
518     o changed configuration of tidal_basin_2d expt
519     o added pkg/debug functions for tracing code in fatal crashes
520     o tidied pkg/monitor to use MONITOR_OPTIONS.h
521     o new fn in pkg/monitor to stop model if solution grows too big
522     o removed lots of single quotes from comments
523    
524    checkpoint50e_post
525    o make KPP work with PTRACERS
526     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
527       nearly a copy of kpp_transport_s
528     - there is no analogue to SurfaceTendencyS, so I have to use
529       gPtr(of the surface layer) instead
530    o add a new platform SunFire+mpi (SunFire 15000) to genmake
531    checkpoint50e_pre
532    
533    checkpoint50d_post
534    o change kpp output from multiple-record state files to single-record state
535      files analogous to write_state.F
536    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
537      analogous to the cg2d-related output.
538    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
539      so that writing to internal file fn (with length 512) fails.
540    checkpoint50d_pre
541    
542    checkpoint50c_post
543    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
544    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
545    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
546    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
547    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
548    
549    checkpoint50c_pre
550    Merging from release1_p13:
551    o bug fix for pkg/seaice dynamic solver
552    o Added SEAICE_initialHEFF to pkg/seaice
553    
554    checkpoint50b_post
555    o store u*,v* in gU,V instead of in guNm1,gvNm1
556    o in order to put the momForcing out of the Adams-Bashforth:
557      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
558      to timestep.F
559    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
560    o re-generate output for highly sensitive test-exp:
561       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
562    
563    checkpoint50b_pre
564    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
565    o corrected CPP option mismatch in exf_Bulk... functions for case
566      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
567    
568    checkpoint50a_post
569    o Bug fix for merging between c50 and KPP.
570      ikey was passed from thermodynamics to kpp_calc via
571      common block rather than being recomputed in kpp_calc,
572      in contradiction with new key itdkey.
573      New key ikppkey created, and tamc.h headers updated.
574    
575    checkpoint50
576    - 2nd step of merge with ecco-branch:
577      merge changes in ecco-branch back into main trunk
578    - bug fix in find_alpha
579    - more storing in gmredi_calc_tensor.F, kpp_routines.F
580    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
581    - merged some sliced AD support routines
582    
583    checkpoint49
584    merged from ecco-branch:
585    o exf:
586      - Enable initialisation of forcing fields to constant
587        (runtime) values.
588      - in exf_getffields.F
589        Reduce i-/j-loop to interior domain, discarding overlaps.
590        That also fixes wrong TAF-key computations for key_1, key_2
591        with bulf formulae.
592      - exf_init.F modify #ifdef for exf_init_evap
593      - exf_getffieldrec.F, ctrl_getrec.F
594        The following INT-usages are not safe:
595          fldsecs  = int(fldsecs/fldperiod)*fldperiod
596          fldcount = int(fldsecs/fldperiod) + 1
597        and were modified.
598    o autodiff: checkpoint_lev...
599      - updated storing for bulk formulae (some arrays were missing)
600      - added state for seaice package
601      - synchronized with main branch
602    o DIVA:
603      Modif.s in
604      - the_main_loop.F
605      - the_model_main.F
606      and added cost_final_restore.F cost_final_store.F
607      o With these changes, it is possible to fully separate
608        the first forward run to compute the cost function (mdthe_main_loop)
609        and adjoint runs over individual DIVA intervals (adthe_main_loop)
610        into separate model executions.
611        This enables better tuning of DIVA to given queue sizes.
612      o Loss of cost function value in consecutive DIVA runs is
613        fixed by storing to 'costfinal' file.
614      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
615        beginning/end of adjoint integration is accounted for.
616      The current changes apply to TAF-1.4.26.
617      TAF has one remaining bug, requiring one manual change
618      (see MITgcm manual).
619    o cal: synchronized between MAIN and ecco-branch
620    
621    checkpoint48i_post
622    o Changes to restore differentiability of code w.r.t. previous tag
623      (mostly adding new routines to make list and replacing
624      pressure by totPhiHyd).
625    o Updated and merged grdchk package
626      - has both ADM and TLM checks
627      - works for single- and multi-proc.
628      - output cleaned
629      - worked successfully for parallel DIVA
630    o genmake:
631      - Adding -platform=SP4
632      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
633    o Modif. for DIVA:
634      ctrl_unpack should not be called in intermediate DIVA interval.
635      (similar thing would apply for active files such as
636      tbar, sbar, psbar, which should not be reinitialised;
637      only relevant for ecco-branch)
638    
639    checkpoint48h_post
640    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
641    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
642    o Added SEAICE_initialHEFF to pkg/seaice
643    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
644    
645    checkpoint48g_post
646    --- EOS:
647    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
648      store total Potential in totPhyHyd for diagnostics & EOS.
649    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
650    --- Pressure/geopotential gradient:
651    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
652    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
653      ( changes results of global_ocean_pressure )
654    o NLFS + z-coord.: add eta*Rho' contribution.
655    o accurate phiHyd when using interface-W at the middle between 2 centers
656     ( changes results of ideal_2D_oce )
657    o includes r* 2nd term in potential gradient.
658    
659    checkpoint48f_post
660    Merging from release1_p12:
661    o Modifications for using pkg/exf with pkg/seaice
662      - improved description of the various forcing configurations
663      - added basic radiation bulk formulae to pkg/exf
664      - units/sign fix for evap computation in exf_getffields.F
665      - updated verification/global_with_exf/results/output.txt
666    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
667      (SBO) core products, including oceanic mass, center-of-mass,
668      angular, and bottom pressure (see pkg/sbo/README.sbo).
669    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
670      to avoid negative values in shallow regions.
671      - updated verification/natl_box/results/output.txt
672      - updated verification/lab_sea/results/output.txt
673    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
674    o Added useSingleCpuIO option (see PARAMS.h).
675    o Updated useSingleCpuIO option in mdsio_writefield.F to
676      work with multi-field files, e.g., for single-file pickup.
677    o pkg/seaice:
678      - bug fix in growth.F: QNET for no shortwave case
679      - added HeffFile for specifying initial sea-ice thickness
680      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
681    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
682      kpp_transport_t.F, forward_step.F, and the_main_loop.F
683    o pkg/seaice:
684      - adjoint-friendly modifications
685      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
686    
687    checkpoint48e_post
688    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
689    o dynamics: change definition of computational domain & adapt mom_fluxform
690      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
691    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
692        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
693        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
694        global_ocean.90x40x15 global_with_exf global_ocean_pressure
695        inverted_barometer solid-body.cs-32x32x1
696      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
697    
698    checkpoint48d_post
699    o in preparation for r*:
700     a) use pre-computed gradient of hydrostatic potential:
701        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
702     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
703        => affects results of glob_oce_pressure (different truncation error)  
704      update output.txt of ideal_2D_oce & global_ocean_pressure
705    
706    checkpoint48d_pre
707    o in preparation for r*:
708      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
709      pass the 2 comp. of the grad. as arguments to momentum S/R.
710      but for the moment, only used if it does not change the results.
711    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
712    
713    checkpoint48c_post
714    Modifications in treatment of initial flux forcing controls
715    to avoid extra storing of flux fields.
716    
717    checkpoint48c_pre
718    o Added tidal_basin_2d experiment (currently 1D!)
719    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
720    
721    checkpoint48b_post
722    o r* coordinate added in #ifdef NONLIN_FRSURF block.
723     (modification to pressure gradient not yet implemented)
724    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
725      (for U & V) that are used for vertical advection of momentum.
726    
727    checkpoint48a_post
728    o In preparation for r*, use temp. array to compute vertical transport
729       in flux-form momentum pkg. => change results of few test-exp.
730      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
731                        lab_sea, natl_box & plume_on_slope
732    
733    checkpoint48
734    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
735    
736    checkpoint47j_post
737    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
738    o moved adexch from forward_step to addummy_in_stepping
739    o added exch in ctrl_map_...
740    o aveFreq.=0. at end of cost_final to avoid overwrite in
741      reverse checkpointing loop
742    o Yet more changes in gmredi:
743      * adgmredi_calc_tensor
744        avoiding all recomputation of gmredi_slope_limit
745      * adgmredi_x/y/rtransport
746        added flag for excessive storing to avoid recomp. of
747        u/v/rtans, dTdx/y/z
748        -> this is not really necessary and very memory-consuming
749      * adgmredi_slope_psi:
750        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
751      * gmredi_slope_limit
752        re-activated full calculation of taperfct for case 'ac02'
753    o updating verification/ adjoints of carbon, global_ocean.90x40x15
754    
755    checkpoint47i_post
756    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
757    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
758      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
759    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
760    o gmredi: fix few bugs.
761    
762    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
763    This will be a good checkpoint to plug into the ecco-branch.
764    o few modif.'s to get latest version adjointed
765      (mainly kick out code in ini_linear_phisurf)
766    o modif's to run adjoint with exactConserv
767    o case GM_BOLUS_ADVEC should be cleaned
768      S/R gmredi_slope_psi should be cleaned
769    o verification/carbon now has exactConserv=.TRUE.
770    
771    checkpoint47g_post
772    o time-average AIM output: becomes independent from statvars time-average
773      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
774    o After TAF bug fix:
775      Tested adjoint of gmredi package.
776      Tests were done with checkpoint47 rather than with latest
777      checkpoint47f_post since the latter is broken for the adjoint
778      verification/carbon/ contains both ADM and TLM gradient checks.
779    Here they are, before they get changed/lost/stolen.
780    Mostly modif.'s to fix numerical sensitivities.
781    Gradient checks OK for
782    - GM_taper_scheme:
783      * clipping
784      * ac02
785      * linear
786      * glw91
787      * dm95
788      * ldd97
789    - GMREDI_OPTIONS:
790      * GM_VISBECK_VARIABLE_K
791      * GM_NON_UNITY_DIAGONAL
792      * GM_EXTRA_DIAGONAL
793      * GM_BOLUS_ADVEC
794    in conjunction with data.gmredi parameters to be checked in
795    in a few minutes under verification/carbon/code/
796    
797    checkpoint47f_post
798    Merging from release1_p10:
799    o modifications for using pkg/exf with pkg/seaice
800      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
801        and SEAICE_EXTERNAL_FLUXES
802      - pkg/exf CPP options EXF_READ_EVAP and
803        EXF_NO_BULK_COMPUTATIONS
804      - usage examples are Experiments 8 and 9 in
805        verification/lab_sea/README
806      - verification/lab_sea default experiment now uses
807        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
808    
809    checkpoint47e_post
810    o created a tag prior to creating a branch
811    
812    checkpoint47d_post
813    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
814      at the bottom boundary had an erroneous half slip boundary condition
815    o added bottom drag and no slip boundary condition capabilities to
816      oceanic pressure coordinates code
817    o added new verification experiment global_ocean_pressure, this experiment is
818      also described in the tutorial section of the manual
819    checkpoint47d_pre
820    
821    checkpoint47c_post
822    o Added a verification experiment for a global cubed-sphere ocean run
823      -  verification/global_ocean.cubed32x32x30
824      -  uses pkg/therm_seaice and pkg/bulk_forcing
825    
826    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
827    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
828      when using P-coordinate; only implemented for atmospheric config.
829    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
830      NOTES: requires option NONLIN_FRSURF to be "#define".
831    o update advect_xz/results/output.txt (left from checkpoint44g_post)
832    
833    checkpoint47b_post
834    Merging from release1_p9:
835    o pkg/seaice
836      - removed GOTO's and added taf directives
837      - double precision constants to reduce the g77 (Linux)
838        to F77 (SGI) differences reported in release1_p8
839    o tools/genmake
840      - added SGI options
841    o verification/testscript
842      - updated to that of checkpoint47a_post
843    o verification/global_ocean.90x40x15/input/eedata
844      - modified for SGI f77 compatibility
845    o verification/lab_sea
846      - added description of sea-ice model
847      - added missing matlab routines
848      - added test of thermodynamics parallelization
849    
850    checkpoint47a_post
851    o new pkg: aim_v23
852     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
853       for now, keep the same surface forcing as before.
854     - Part-Cell implemented into AIM; check that Heat & Water are conserved
855     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
856     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
857    o add diagnostic of surface correction term in monitor output
858    
859    o bulk_force and therm_seaice
860    - Two packages:  bulk_force (Bulk forcing)
861      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
862    - Earlier integration from Stephaine Dutkiewicz
863      and Patrick Heimbach.
864    - Two ifdef statements for compile time,
865       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
866    
867    checkpoint47
868    differentiable version of checkpoint46n_post
869    o bug fix in quasihydrostaticterms
870    o * "clean" adjoint code (in terms of extensive recomputations)
871        can now be obtained for all GMREDI options (i.e. for
872        - GM_VISBECK_VARIABLE_K
873        - GM_NON_UNITY_DIAGONAL
874        - GM_EXTRA_DIAGONAL
875        - GM_BOLUS_ADVEC )
876      * However, wrong gradient check problem remains unsolved.
877      * New CPP options have been introduced for different
878        tapering schemes
879    o external_fields_load now part of differentiation list
880    o pressure needs multiple storing;
881      would be nice to have store_pressure at beginning or
882      end of forward_step, e.g. by having phiHyd global (5-dim.)
883      (NB: pressure is needed for certain cases in find_rho,
884      which is also invoked through convective_adjustment).
885    o recomputations in find_rho for cases
886     'JMD95'/'UNESCO' or 'MDJWF' are OK.
887    o #define ATMOSPHERIC_LOADING should be differentiable
888    o ini_forcing shifted to begining of initialise_varia
889    o Incorporating QNVS line search routines into MITgcm
890      (this is separate code, and therefore not under pkg)
891      lsopt/, optim/
892    o Updated verification/carbon/
893      - #define GM_VISBECK_VARIABLE_K
894      - GM_taper_scheme    = 'ldd97'    
895    
896    checkpoint46n_post
897    Merging from release1_p8:
898    o verification/natl_box:
899      updating new external_fields_load routine
900    o New package: pkg/seaice
901      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
902      The sea-ice code is based on Hibler (1979-1980).
903      Two sea-ice dynamic solvers, ADI and LSR, are included.
904      In addition to computing prognostic sea-ice variables and diagnosing
905      the forcing/external data fields that drive the ocean model,
906      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
907      The implied surface heat flux is then stored in variable
908      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
909      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
910      non-local transport term.  Because this call precedes model
911      thermodynamics, temperature under sea-ice may not be "exactly" at
912      the freezing point by the time theta is dumped or time-averaged.
913      N.B.: fairly large differences in accuracy occur across
914            different platforms/compilers; comparison between
915            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
916            generated output gives:
917       T           S           U           V
918      C D M    c        m  s        m  s        m  s        m  s
919      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
920      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
921      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
922    
923      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
924    o GAD:
925      - generated new common blocks to account for call of
926        same gad routines with differing traceridentities
927        (needed to modify tracerIdentity indices in GAD.h)
928      - generated separate common blocks for case useCubedSphereExchange
929        (Department of Futurology)
930      - parameter lists to gmredi_?transport: added tracerIdentity
931      - added new key indices to tamc.h
932    o external_fields_load:
933      - added this routine to TAF list
934      - needed to make some common blocks global and additional storing
935        along the same lines as exf package (checkpoint_lev?_directives.h)
936    o exf:
937      updated external forcing package
938      - bug fixes carried over from ecco-branch
939        (missing OBCS_OPTIONS.h in two routines)
940      - enable easy to use "no forcing".
941      - added exf I/O for atmospheric loading
942      - added exf I/O for runoff data
943      - transfered scaling between exf <-> MITgcm to exf namelist
944    o Adding new verification experiment global_with_exf.
945      This verification experiment is almost identical to the
946      global_ocean.90x40x15 experiment, except that it uses
947      the exf (and cal) package instead of the
948      external_fields_load routine (cf README file).
949    
950    checkpoint46m_post
951    o modified testscript to return -- when there are no lines of "%MON" output
952    o added new flag "quasiHydrostatic" for QH mode
953      and new routine quasihydrostaticterms()
954    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
955      New routine: mom_u_coriolis_nh()
956    o fixed sign of non-hydrostatic metric terms in u and v equations.
957      Depend on correct sign of gravitySign.
958    o added work.pc* to .cvsignore in aim directories using ifc
959    o introduced flag for controllin non-hydrostatic metric terms
960    o removed gravitySign from PARM04
961    o switched to g77/ifc from pgf77 in aim experiments
962    
963    checkpoint46l_post
964    o made convective adjustment work with pressure coordinates:
965     - changed the direction of k-loop in convective_adjustment.F for the
966       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
967     - adjusted the reference pressure k-index in convective_adjustment.F
968     - adjusted the convection condition in convect.F (in analogy to
969       calc_ivdc.F)
970     - convective_adjustment no longer computes anything on the halos
971     - removed the warnings about negative salinity from find_rho.F and
972       find_alpha.F; instead the new routine look_for_neg_salinity, called
973       at the beginning of find_rho, find_alpha, and find_beta, does a
974       check of the entire slice, if CPP-option
975       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
976    checkpoint46l_pre
977    
978    checkpoint46k_post
979    o fixed the verification/global_ocean.90x40x15 experiment:
980     - new bathymetry (the world according to A., JMC, and M.)
981     - new initial fields and forcing fields (*.bin files)
982     - new POLY3.COEFFS (for the next release one should switch to a full
983       equation of state: JMD95P or MDJWF)
984     - fixed several errors and redundancies in the data file
985     - experiment uses looped cells
986     - added matlab directory with diagnostic scripts for plotting of output
987    
988    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
989     - read AIM physics parameters from a file (data.aimphys)
990     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
991    
992    checkpoint46j_post
993    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
994    o move wVel computation at the end of the time step, in S/R integr_continuity
995    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
996    o update timeave pkg for wVel diagnostic.
997    checkpoint46j_pre
998    
999    checkpoint46i_post
1000    o Clean up AIM package (and keep the results unchanged):
1001      include CPP_OPTION and use IMPLICT NONE in all routines ;
1002      declare all the variables _RL ; use _d 0 for all numerical constants.
1003      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1004    
1005    checkpoint46h_post
1006    o cleaned up the use of rhoNil and rhoConst.
1007      - rhoNil should only appear in the LINEAR equation of state, everywhere
1008        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1009        and the dynamical equations are all divided by rhoConst
1010    o introduced new parameter rhoConstFresh, a reference density of fresh
1011      water, to remove the fresh water flux's dependence on rhoNil. The default
1012      value is 999.8 kg/m^3
1013    o cleanup up external_forcing.F and external_forcing_surf.F
1014      - can now be used by both OCEANIC and OCEANICP
1015    checkpoint46h_pre
1016    
1017     Added code to convert surface volume flux (fresh water) into
1018     a mass flux when using P coordinates in the ocean (OCEANICP).
1019     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1020    
1021    checkpoint46g_post
1022    o Include a new diagnostic variable phiHydLow for the ocean model
1023      - in z-coordinates, it is the bottom pressure anomaly
1024      - in p-coordinates, it is the sea surface elevation
1025      - in both cases, these variable have global drift, reflecting the mass
1026        drift in z-coordinates and the volume drift in p-coordinates
1027      - included time averaging for phiHydLow, be aware of the drift!
1028    o depth-dependent computation of Bo_surf for pressure coordinates
1029      in the ocean (buoyancyRelation='OCEANICP')
1030      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1031        Theta, Salinity, and Pressure in the parameter list. This routine is
1032        presently contained in find_rho.F. This routine does not give the
1033        correct density for 'POLY3', which would be a z-dependent reference
1034        density.
1035    o cleaned up find_rho
1036      - removed obsolete 'eqn' from the parameter list.
1037    o added two new verification experiments: gop and goz
1038      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1039    checkpoint46g_pre
1040    
1041    checkpoint46f_post
1042    o Enable tangent linear (forward mode) gradient checks:
1043      - extended active file handling to g_... files
1044      - added TANGENT_SIMULATION to theSimulationMode
1045      - extended grdchk package accordingly
1046    o added tangent linear setup in verification/carbon/code_ftl
1047    o added adjoint setup in verification/front_relax/code_ad
1048    
1049    checkpoint46e_post
1050    o Added new equation of state -> MDJWF
1051      - EOS of McDougall et al., 2002, JAOT, submitted
1052      - caveat: the equation of state is only valid for a smaller (more
1053        realistic?) range of values than JMD95P/Z and UNESCO
1054      - added masks to the calculation of pressure in store_pressure
1055      - added more check values for density in check_eos (ini_eos.F), some of
1056        the old check values are out of the range of the MDJWF-eos, so don't
1057        expect perfect matches for those
1058    checkpoint46e_pre
1059    
1060    checkpoint46d_post
1061    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1062      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1063      case of pressure coordinates. eosType='JMD95Z' in
1064      combination with buoyancyRelation='OCEANICP' now causes an error.
1065    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1066      in find_alpha/beta.
1067    checkpoint46d_pre
1068    
1069    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1070      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1071    
1072    checkpoint46c_post
1073    o Changes necessary for ocean in p-coordinates
1074     -  Added new buoyancy relation = 'OCEANICP'
1075     -  Added new parameters = gravitySign (this used to be contained inside
1076        the factor dRdZ which I added when we first switched to R coordinates).
1077     X GM/Redi is not compatible (yet)
1078     X bottom drag and no-slip need to be debugged.
1079    checkpoint46c_pre
1080    
1081    checkpoint46b_post
1082    o Added new equation of state -> JMD95Z and JMD95P
1083      - EOS of Jackett and McDougall, 1995, JAOT
1084      - moved all EOS parameters into EOS.h
1085      - new routines ini_eos.F, store_pressure.F
1086    o Added UNESCO EOS, but not recommended because it requires
1087      in-situ temperature (see JMD95)
1088    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1089      unesco.f to be used with POLY3
1090    checkpoint46b_pre
1091    
1092    checkpoint46a_post
1093    o Added (atmospheric) pressure loading
1094      - new field in FFIELDS.h, etc...
1095      - new cpp flag ATMOSPHERIC_LOADING
1096    o Changed hFacC to _hFacC in calc_phi_hyd.F
1097    o Added SHORTWAVE_HEATING to some files for consistency
1098    checkpoint46a_pre
1099    
1100    checkpoint46
1101    further merges from release1_p5
1102    o new ctrl package
1103      - adopted from ECCO environment to enable optimization
1104      - added Eliassen Palm fluxes to controls
1105    o added Eliassen Palm flux controls to gradient check package
1106    o cost package
1107      - Compatible with new ctrl package
1108      - added Eliassen Palm cost hooks
1109      - modif's of existing cost functions
1110    o Adjoint-related bug fixes in kpp:
1111      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1112      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1113    o autodiff package
1114      - flow directives:
1115        + new for S/R do_the_model_io
1116        + enhanced for S/R checkpoint
1117        + new gmredi.flow
1118      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1119        disable adcommon.h/g_common.h by default.
1120      - fixed problem for adjoint of global_max
1121    o modified verification/carbon/
1122    o New setup for adjoint of global_ocean
1123    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1124    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1125    o incorporated hooks for sponge layer code (external_forcing.F)
1126    
1127    checkpoint45d_post
1128    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1129    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1130      (affects plume_on_slope "cg2d" output)
1131    o add new parameter deltaTfreesurf for free-surface time stepping
1132    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1133    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1134    o change phiMin in exp1 (to agree with documentation)
1135    o add new flags:
1136     - T,S forcing inside/outside Adams-Bashforth
1137     - turn off temp,salt advection and/or forcing
1138     - for each tracer, define internal flag for multiDimAdvection & A-B
1139    o monitor: change definition of KE to check conservation of Energy
1140    
1141    checkpoint45c_post
1142    o Removed f90 comments ("!")
1143    o Modified initialisations to enable exf package for MITgcm
1144      (without invoking ECCO_PACKAGE).
1145    o modifications to gradient check package (Martin Losch)
1146      - enable centered differences
1147      - modified format of standard output
1148    
1149    checkpoint45b_post
1150    o cleaned exchange calls in cg2d
1151    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1152    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1153      to configure barotropic setup (Martin Losch)
1154    o moved some initialisations within bi,bj loop in dynamics
1155      (TAF flow dependency)
1156    o in initialise_varia, moved call packages_init_variables
1157      before convective_adjustment_init
1158      (corresponding adjustment of TAF tape initialisation).
1159    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1160    
1161    checkpoint45a_post
1162    o compute Rho over the whole domain (extend iMin,jMin indices)
1163    o specific exchange for X-slice domain (case Ny=1)
1164    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1165    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1166    
1167    checkpoint44h_post = checkpoint45
1168    o Fix to restore differentiability:
1169      place at which packages_init_variables is called in
1170      initialise_varia is crucial for reverse control flow.
1171    o modifications in GMRedi to enable stable adjoint
1172      (corresponding modif's in thermodynamics, dynamics)
1173    o added missing hook for sponge layer code in external_forcing
1174    o modified test cost functions
1175    o storing in gad_advection (plus removal of write(0,*)!
1176    o missing headers TR1.h added in convective_adjustment routines
1177    o errorMessageUnit set non-equal zero in eeboot
1178      (conflict on some platforms, e.g. IBM SP3)
1179    o modified carbon verif.
1180    
1181    checkpoint44h_pre
1182    o vertical grid option: allow to put the Interface at the middle between
1183      2 cell-centers ; replace delZ in pkg/kpp by drF.
1184    o GM Advective form: Tracers are advected using the residual transport (=
1185      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1186    
1187    checkpoint44g_post
1188    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1189      results) ; ifdef missing in thermodynamics.F
1190    
1191    checkpoint44f_pre,checkpoint44f_post
1192    o added PTRACERS package
1193      This allows an arbitrary number of passive tracers to be integrated
1194      forward simultaneously with the dynamicaly model.
1195      + Implemented so far:
1196        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1197        - I/O and checkpointing
1198        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1199      + Not implemented so far:
1200        - KPP
1201        - OBCS
1202      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1203        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1204        line in data.pkg.
1205      + This package is disabled by default since it increases storage.
1206    
1207    
1208    o testscript: added -cleanup option
1209    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1210                 b) enable to filter 2D fields.
1211    
1212    checkpoint44e_pre,post
1213    o re-wrote convective adjustment to use pre-calculated weights
1214      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1215      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1216      Original calls to convect() still in place.
1217    
1218    chkpt44d_pre,post
1219    o added missing EXCLUDE_MONITOR flags
1220    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1221      (incompatible typ in MIN/MAX expressions caused problems
1222      on IBM SP3)
1223    o in genmake added variable MAKEDEPEND
1224      plus resetting for case SunOS
1225    o added timer_stats.c routine for IBM SP3
1226    o removed variables in dynamics
1227    !!! I forgot to create tag chkpt44d_pre !!!
1228    !!! But chkpt44d_pre = chkpt44c_post    !!!
1229    
1230    o real fresh water flux implemented with non-linear free-surface.
1231    
1232    chkpt44c_pre,post
1233    o few fix (mask in shap_s2, EmPmR in external_field_load,
1234      USE_NATURAL_BCS in solve_for_P);
1235    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1236    
1237    checkpoint44b_pre/_post
1238    o merge of relevant stuff from the ecco-branch:
1239      - genmake: removed $S64 overwrite for case SunOS
1240      - pkg/exf: update and corrections for field swapping and obcs
1241      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1242                  harmonized between ECCO and MITgcm
1243      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1244                      updated checkpointing_lev... lists for obcs
1245      - model/src: minor changes in forward_step, plot_field
1246                   added directive for divided adjoint in the_main_loop
1247      - pkg/mdsio: added mdsio_gl_slice
1248    
1249    o check parameters & config (chkpt44a_pre,post)
1250    o OBC and NonLin_FrSurf.
1251    
1252    checkpoint44
1253    o fix bug in mom_vi_del2uv
1254    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1255    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1256    o update AIM experiments (NCEP input files)
1257    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1258    o added some stuff for AD
1259    
1260    checkpoint43
1261    o added two new advection tests
1262    o added global 4x4 degree ocean test
1263    o added test of H&S94 with free surface on cube
1264    o some final mods for gradient check, adjoint,...
1265    
1266    checkpoint42
1267      Fixed AD-related problems:
1268    o Store directives up-to-date with re-arranged Adams-Bashforth
1269      (mainly thermodynamics.F)
1270    o New store directives for multi-dim. advection schemes
1271      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1272      * new common block and key passkey
1273      (mainly gad_advection.F)
1274    o Modified store directives for split of dynamics/thermodynamics
1275      for the case ALLOW_KPP
1276    o Cleaned argument list for timestep_tracer.F
1277    
1278    checkpoint41
1279    o re-formatted/added comments in prologues of key subroutines
1280      to work with protex
1281    
1282    checkpoint40
1283    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1284    o added FLT (floats) package from Arne along with demo. experiment
1285    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1286      implementation of forward-in-time forcing terms
1287    o more mods for non-linear free-surface including new variable
1288    o modified multi-dim method to work on cube
1289    o bug fix in KPP (from DM)
1290    
1291    checkpoint40pre9
1292    o added DST advection schemes
1293    o fix MPI bug on SGI's
1294    o modifications for non-linear free-surface
1295    o fixed conditionals for fixed flow/passive tracer only mode
1296    o added tension/strain form of stress tensor
1297    o changes to commenting of arguments for TAF/TAMC
1298    o added/updated many matlab scripts
1299    o added multi-dimensional advection method for tracers
1300      
1301    checkpoint40pre8
1302    o new package rw/
1303      Added method for dumping intermediate local arrays:
1304      mdsio_writetile - same as mdsio_writefield except works from inside
1305                        bi,bj loop
1306      mdsio_writelocal - same as mdsio_writetile except works for local
1307                         arrays
1308      write_local_r? - higher-level wrapper for mdsio_writelocal
1309      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1310      Example given at end of mom_vecinv.F that dumps some local arrays.
1311    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1312      control flux-form versus vector invariant code.
1313      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1314      or genmake -DISABLE ...
1315    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1316      (additional storing is now needed for case vecinv;
1317      currently nothing implemented to switch this storing off
1318      in case fluxform is used since no CPP flag available).
1319    
1320    checkpoint40pre7
1321    o bug fix in dynamics.F
1322      calc_viscosity called before k=1,Nr loop.
1323    o added some #ifdef's ALLOW_PASSIVE_TRACER
1324    o cleaned initialisations in ctrl_map_ini
1325      related to TAF
1326    
1327    checkpoint40pre6
1328    o split dynamics into thermodynamics & dynamics
1329    o corresponding split of calc_diffusivity into
1330      calc_diffusivity, calc_viscosity
1331      (kpp_calc_diff, kpp_calc_visc).
1332    o Added diffkr, kapgm to control variables
1333    o bug fix in gmredi_slope_limit for ldd97
1334    
1335    checkpoint40pre5
1336    o proper initialization of Adams-Bashforth time stepping
1337      + uses forward step for very first step of model (iter=0)
1338    o re-generated *all* output since almost all output is modified by this
1339      change (sorry but we've been putting this one off for about 2 years)
1340      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1341        *not* regenerated since they are already out of date and I don't
1342        want to create the impression that they are suddenly working.
1343    o removed KAP stuff for DEC's
1344    o modified/added many .cvsignore files in */code and */input
1345    o added new expt "solid-body.cs-32x32x1"
1346      + this uses an alternative form of ini_curvilinear_grid.F which
1347        is not necessarily any better than the current one...
1348    
1349    checkpoint40pre4
1350    o added re-initialisations of utrans,vtrans,rtrans in
1351      calc_common_factors which are crucial for TAF.
1352    o extended iMin,jMin range for calc_common_factors,
1353      calc_diffusivity
1354    o added option ALLOW_PASSIVE_TRACER
1355    o a few minor updates and fixes
1356    
1357    checkpoint40pre3
1358    o created calc_gtr1.F for gad package
1359    o split the_main_loop and re-introduced forward_step
1360    o some recomputations of nIter0 for TAMC
1361    
1362    checkpoint40pre2
1363    o Updated to latest branch of AJA, JMC
1364    o Added gradient check package
1365    o Added routines for passive tracer handling
1366    o Added carbon sequestration sensitivity experiment
1367    
1368    checkpoint39
1369     o Modifications and fixes to support TAMC
1370       (mainly missing or wrong directives)
1371     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1372       in addummy_in_stepping
1373     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1374     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1375     o Included following packages:
1376       cal: calendar
1377       exf: external forcing
1378       ecco: essential routines to control use of cal, exf
1379             (NB: this is not the full ECCO environment)
1380     o disabled some packages by default in genmake
1381    
1382    checkpoint38
1383     o see notes_c37_adj.txt
1384     o corrected wrong layer index in external_forcing_t
1385     o replaced the_main_loop/forward_step by the_main_loop
1386     o removed forceoutput from write_state
1387       (replaced criteria for initial/final state)
1388     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1389    
1390    checkpoint37
1391     o mdsio.F routine split and packaged in pkg/mdsio
1392       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1393        used unless genmake -disable=mdsio)
1394     o allow a more precise surface-geopotential gradient for the atmosphere
1395       taking into account the change in space of Alpha (=1/rho) at the surface.
1396     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1397       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1398     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1399       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1400       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1401     o Time-Average diagnostics defined as a pseudo package "timeave".
1402     o pickup files : old pickup (before c35) did not work with new code (c35
1403       and after) unless activating 2 commented lines in initialise-varia.
1404     o Non-Hydrostatic pickup file Pb fixed.
1405     o bug with Rigid-lid version (since c35) fixed.  
1406    
1407    checkpoint36
1408     o implement Crank-Nickelson barotropic time-stepping
1409     o recover Time-Average diagnostics
1410     o fix Pb in checkpoint (PR#19)
1411     o AIM become a standard package ; clean unused CPP_kees
1412    
1413    checkpoint35
1414     o subtantial rewrite of dynamics.f
1415     o allows staggered time-stepping
1416     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1417     o added bottom drag (linear + quadratic)
1418    
1419    checkpoint34
1420     o Modified exchange routines for correct reverse simulation.
1421     o Added verification output to comply with bug fix in impldiff.F
1422       as of c33 (exp2, natl_box).
1423     o Corrected store directives in dynamics.F
1424     o Corrected array boundaries in impldiff.F
1425     o Corrected array dimensions in gmredi.
1426       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1427     o Added routine GLOBAL_SUM_INT to global_sum.F
1428     o Added mdsio_gl.F for ECCO purposes.
1429    
1430    checkpoint33
1431     o Fixed bug in lower BC in impldiff.F
1432     o Fixed confusion about units of forcing arrays in FFIELDS.h
1433       namely Fu,Fv,Qnet,Qsw,EmPmR:
1434       - Removed verification/natl_box/code/external_fields_scale.F
1435         (did not differ from that in model/src)
1436       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1437         (see FFIELDS.h for description)
1438       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1439         kpp_calc.F and kpp_transport_t.F
1440       - Removed model/src/external_fields_scale.F and calls to it
1441       - verification/natl_box uses flux data with "atmospheric" sign so
1442         a special version of external_fields_load.F is used to
1443         change the data as it's read in. This way, the arrays
1444         have the right units and signs at all times tha a user could
1445         possibly use them.
1446     o Corrected genmake to delete a temporary file during configuration
1447    
1448    checkpoint32
1449     o Scaling of forcing fields moved from external_forcing.F to
1450       external_fields_scale.F, called directly after loading fields.
1451     o Surface relaxation terms added to surface tendency fields in
1452       extra subroutine.
1453     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1454       fields.
1455     o Changes in GMRedi to comply with packaging structure.
1456     o Modifications and bug fixes in KPP package.
1457     o Verification experiment for KPP added (verification/nat_box/)
1458    
1459    checkpoint31
1460     o Packages interface brought in line with defined standard
1461       -> new routines packages_...F
1462       -> changes in initialise_fixed.F, initialise_varia.F
1463       -> enables initialisation interface for ECCO package
1464     o Rescaling of external forcing fields immediately after read
1465       (removed from external_forcing.F)
1466       -> new: surface_fields_scale.F
1467       -> affects ini_foorcing.F, external_fields_load.F
1468     o Computation of surface tendencies before tendency updates.
1469       -> new: external_forcing_surf.F
1470     o Change of variable names useGMRedi, useKPP, useECCO
1471     o Further changes in dynamics.F, impldiff.F for TAMC
1472     o Tested for experiments 0, 2, 4.
1473       - not yet tested for GMRedi.
1474       - not yet tested for KPP.
1475    
1476    checkpoint30
1477     o Updates for OBCs
1478     o New experiment for test OBCs (internal_wave)
1479     o New output.txt in verification/exp4/results/
1480     o Updates for KPP: calculation of viscosity corrected, new variables
1481       kpp_dumpFreq and kpp_taveFreq
1482     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1483       and entry for T90 in genmake
1484    
1485    checkpoint29
1486     o packaged KPP and GM/Redi
1487    
1488    checkpoint28
1489     o Corrected initialization of hFacMin for difference vertical coordinates
1490     o Modified calculation of partial cell thickness to more robust algorithm
1491     o config_summary.F: replaced write_1D_... by write_0D_...
1492       read_write.F: added subroutines write_0D_...
1493     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1494       included some initialisations required for TAMC.
1495     o routine calc_isoslopes: modified sqrt computation to make it
1496       differentiable for zero argument.
1497     o routines dynamics, impldiff:
1498       included store directives and tape key computations required for TAMC.
1499     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1500    
1501  checkpoint27  checkpoint27
1502   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
1503     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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