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revision 1.13 by cnh, Wed Sep 9 15:24:19 1998 UTC revision 1.276 by jmc, Thu Apr 8 05:09:20 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 no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
7    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
8      atmospheric model (AIM) to use it ; add a "slab ocean" component.
9    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
10    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
11    o extending useSingleCpuIO option to work with new exch2 I/O format
12      - old-style, missing-tile I/O is still accessible by defining CPP
13        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
14    o monitor package can write to NetCDF files and/or STDOUT
15    o fix re-definition bug in MNC_GRID_INIT_ALL()
16    o doc/api_reference added
17      - a framework for building an API Reference Manual using all
18        the "protex" comments embedded in the code
19      - see pkg/generic_advdiff, pkg/mnc for examples
20    o MNC:
21      - make myThid the last argument for all subroutines
22      - new default for the grid files: NO halos
23      - add useMNC and other run-time flags
24      - separate per-file-group handling of the unlimited dimension
25      - early initialization of MNC w/ flags read at the eeboot stage
26        and lookup tables set in initialize_fixed
27      - write all MNC output to a freshly-created directory
28    o thermodynamics sea-ice (thsice) is now tested with testreport.
29    o test exp. advect_cs: use the standard cs32 grid ; update output.
30    o Added functionality to grdchk:
31      pick global i,j,k position (or nearest wet) where to perform check.
32    
33    checkpoint52l_post
34    o new land formulation:
35      a) use ground enthalpy as prognostic variable to ensure exact
36         energy conservation.
37      b) account for water temperature and for latent heat of freezing
38         in all processes (rain, run-off, ground storage)
39      c) compute surface and ground temperature implicitly.
40    o aim_v23 modification for new land model:
41      a) Treat separately land / ocean / sea-ice surface fluxes
42         to allow implicit computation of land & sea-ice surface temp.
43      b) add snow precipitation.
44    checkpoint52l_pre
45    
46    o fix problem (when 1 tile is empty) in min/max monitor.
47    o fix bug in timeAve (u,vZetatave in common block)
48    o no restoring terms under ice for pkg/seaice
49    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
50    o bug fix for pkg/seaice pickups
51    o change MNC call locations and add coordinate attributes
52    o mask vorticity at the corner ; affects global_ocean.cs output
53    o fix ini_curvilinear_grid ; test CS experiments with mpi
54    o aim.5l_cs: modify sea-ice fraction input file ; update output
55    o exf: Adding simple range check routine for exf fields after read
56    
57    checkpoint52k_post
58    o removed top-level directory "diags"
59      - we migrated these functions to pkg/timeave a long time ago
60    o fixed bug introduced in pkg/monitor
61    o accuracy ctrlprec = 32 insuffient for gradient checks using
62      averaged fields (I/O via cost_averages)
63      -> use ctrl.h in active_file*.F to control I/O precision.
64    o paramter list of CALL ADTHE_MAIN_LOOP
65    o added initial do_the_model_io to ecco
66    o set all ...Freq to zero after cost_final
67      taveFreq, dumpFreq, pChkptFreq
68    o MAIN and ECCO differentiability restored
69    
70    checkpoint52j_post
71    o fix nchklev in tamc.h for global_ocean...
72    o Bringing flow and store directives up-to-date
73    o Really weird thing!
74      call do_the_model_io from the_main_loop with parameters
75      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
76      TAF places a faulty re-call of initialise_varia
77      after cost_final call which should not be there!
78    checkpoint52j_pre
79    
80    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
81      error messages
82    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
83    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
84      debug output
85    o modfied mdsio_writefield.F to handle non-global files under exch2
86    o update AIM Cubed-Sphere exp (aim.5l_cs):
87      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
88    o update AIM Equatorial Channel exp:
89      use standard aim_v23 pkg and change the SST fields to be more realistic.
90    o globalFile now works with exch2
91    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
92      mon_vort3.F to make exch2 friendly with >1 tile per cube face
93    o limit timeave output for hi-res integrations
94    
95    checkpoint52i_post
96    o removed CPP_EEOPTIONS.h from verification/*/code
97    o updated the tiling for global_ocean_pressure
98    checkpoint52i_pre
99    
100    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
101      the old pkg/aim).
102    
103    checkpoint52h_pre
104    o shortened offending lines in exch2_send_rx?.template
105    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
106    o genmake2: add build & execute test for NetCDF code
107    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
108      old grid files, moved CPP_EEMACROS.h to pkg/exch2
109    o added useSingleCPUIO flag to monitor.F and mon_out.F
110    o added temporary hack for sea-ice dynamics on the cube:
111      metric terms are ignored and it is assumed that
112      there is no sea-ice on cube faces 1, 2, 4, and 5.
113    
114    checkpoint52f_post
115    o added exch2 cube routines to pkg/exch2
116    o modified hs94.cs-32x32x5 to use it
117    o added new grid files to hs94.cs-32x32x5
118    checkpoint52f_pre
119    
120    checkpoint52e_post
121    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
122      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
123    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
124      to work with implicit vertical advection and AB ;
125    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
126    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
127     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
128    checkpoint52e_pre
129    
130    o fix bug in impldiff when Nr=1 or Nr=2.
131    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
132    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
133    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
134      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
135    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
136    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
137    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
138    
139    checkpoint52d_post
140    o re-tiled many expts to allow comparison in multi-processor mode
141      - updated output accordingly
142      - changed hs94.128x64x5 to use intial T from file rather than use the
143        random number generator
144    o add infrastructure in model routines for fizhi and gridalt packages
145    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
146    o changes to permit hi-res, cubed-sphere, configuration
147      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
148      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
149      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
150        of surface winds for the cube
151      (A verification experiment, based on global_ocean.cs32x15, but with
152       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
153       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
154       complete with example surface forcing files and matlab scripts to look
155       at the output and compare it with that of global_ocean.cs32x15.)
156    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
157       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
158       to conform to the common rule.
159    o check-in the first version of the coupler + interfaces for multi-components
160       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
161       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
162       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
163       - ocean and atmos. share the same horizontal grid (no interpolation).
164       - exchanges between component and coupler is done in forward_step
165    o new verification experiment, cpl_aim+ocn:
166       coupled ocean - AIM atmosphere on cs32 grid.
167    
168    checkpoint52d_pre
169    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
170    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
171    
172    checkpoint52c_post
173    o Fixing OPTIONS files for use of exf:
174      - ALLOW_ECCO not needed
175      - ECCO_CPPOPTIONS.h should not be included from
176        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
177        as has been the case in the past
178      - All cal/exf related options are currently set in
179        single header file. Should remain so until we
180        agree on a consistent new policy.
181    o Removed all CPP options for cal package.
182      cal has no more CPP options.
183    o modified STOREs in GAD_ADVECTION
184    o corrected key comp. for passkey
185    
186    checkpoint52b_post
187    o new version: "thsice" of thermodynamic sea-ice pkg:
188     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
189     - modify fluxes but do not change theta directly;
190     - light cleaning of bulk_force pkg (still needed with thsice).
191     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
192       + output_thsice.txt to test thsice & bulk_force pkgs.
193    o put back grid & coriolis monitor output.
194    checkpoint52b_pre
195    
196    o call "do_the_model_io" at the beginning (=> dump initial state)
197    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
198    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
199      (need info on NUMBER_OF_PTRACERS)
200    o missing PTRACERS headers in some routines
201    o default tamc.h in pkg/autodiff supposed to crash
202      to ensure proper customization
203    
204    checkpoint52a_post
205    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
206      - moved surfaceTendencyTice from pkg/seaice to main code
207      - subroutine FREEZE_SURFACE now limits only surface temperature
208        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
209        => new output.txt for global_ocean.cs32x15 & global_with_exf
210      - keep the old version of FREEZE for backward compatibility;
211        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
212      - corresponding modifs for TAF directives
213    o added surface flux output variables to TIMEAVE_STATVARS
214    o time-averaged output for pkg/ptracers
215    o fix problem with ECCO-related divided adjoint
216      snapshot file was missing some ad-variables,
217      but no warning issued by TAF
218    
219    checkpoint52a_pre
220    o some bug fixes for #undef REAL4_IS_SLOW
221    
222    checkpoint52 = ecco_c52_e35
223    o after testing adjoints of checkpoint51u_post
224    
225    checkpoint51u_post
226    o this is the post-merge tag of the ecco-branch
227      (needs another clean checkout and re-testing)
228    o various natl_box_adjoint configs and results
229      but no input fields
230    o obcs adjoint not yet merged!
231    o adding ECCO global 1x1 and 2x2 degree configs
232    o updated/extended some store directives for seaice
233    o pkg/ecco now containes ecco-specific part of cost function
234    o top level routines the_main_loop, forward_step
235      supersede those in model/src/
236      previous input data.cost now in data.ecco
237      (new namelist ecco_cost_nml)
238    o in ctrl/ cleaned some cross-dependencies and updated CPP options
239    
240    checkpoint51t_post
241    o this is the pre-merge tag of the ecco-branch
242    
243    checkpoint51s_post
244    o cleanup: removed various obsolete #define-s
245    o pkg/grdchk
246      - renamed 'ph-grd 3' to 'grad-res'
247      - merged from ecco-branch
248        (remaining bug fixes for obcs gradient checks)
249      - additional high-precision output for testreport
250        (grep for 'precision_grdchk_result')
251    
252    checkpoint51r_post
253    o cleaned up or removed CPP_OPTIONS.h files
254    o updated results for some of the tests to reflect the new
255      optfiles (-ieee: -O0 instead of -O3)
256    
257    checkpoint51q_post
258    o cd_code:
259      - moved cd_scheme.F -> cd_code_scheme.F
260      - separate read_checkpoint from cd_code_ini_vars.F
261      - separated cd_code part from write_checkpoint
262      - updated AD_SOURCE, generated .flow
263      - added CD_CODE_VARS.h to the_main_loop
264      - Moving cd_code specific store dir.s to pkg/cd_code
265    o ctrl package totally restructured
266      - pack/unpack now optional and decoupled from
267        xx_/adxx_ I/O
268      - ctrl_pack/unpack cleaned
269        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
270      - confined inclusion of AD_CONFIG.h to where necessary.
271    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
272    
273    checkpoint51p_post
274    o create initial cd_code package
275      - WARNING: the initialization of fields within packages
276        is broken because INI_FIELDS (where READ_CHECKPOINT is
277        called) is called *before* PACKAGES_INIT_VARIABLES.
278        This seems to be backwards since
279        1) its important to initially zero the entire field including
280           the "halo" region
281        2) zeroing needs to be done *before* reading pickup info
282           and the pickup call might or might not happen in any
283           particular run
284      - this needs an overhaul for R2
285    o cleanup verification/*/code/GMREDI_OPTIONS.h
286    o cleanup testreport
287    
288    checkpoint51o_post
289    o bringing AD-related verif's up to date with genmake2
290      - carbon/
291      - global_ocean.90x40x15/
292      - hs.94.1x64x5/
293      - (front_relax/ )
294    o (more) consistent directory structure for AD-related verif.'s
295    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
296    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
297    o bug fix in find_alpha.F for MDJWF:
298      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
299        change rho -> rho-rhoConst
300      - replace call find_rho to find_rhonum
301    o initialisation of rFlx extended to full array (required by TAF)
302      and shifted to thermodynamics
303    o removed PTRACERS.h in ptracers routine
304    o added surfacetendencyPtr to S/R parameter list pracers_forcing
305    o Correcting initialisations for fVerU, fVerV.
306    o helping TAF to recognize dependency on kUp for
307      fVerU, fVerV
308    o Replacing delZ by delR in pkg/ctrl/
309    checkpoint51o_pre
310    
311    o undid all of cp51 pending some cleanups and discussion
312    o added the [#include "AD_CONFIG.h"] statement to all files that need
313       it for adjoint/tl #defines
314     o re-worked the build logic in genmake2 to support AD_CONFIG.h
315     o removed tools/genmake since it no longer works
316    
317    checkpoint51n_post
318    o modifications to make FREEZE flux visible to pkg/kpp
319      - moved surfaceTendencyTice from pkg/seaice to main code
320      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
321      - subroutine FREEZE now limits only surface temperature
322        (this means new output.txt for global_ocean.90x40x15,
323         global_ocean.cs32x15, and global_with_exf)
324    o added surface flux output variables to TIMEAVE_STATVARS
325    
326    checkpoint51n_pre
327    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
328    o added [#include "AD_CONFIG.h"] to all files that use the following
329      defines:
330      - ALLOW_ADJOINT_RUN
331      - ALLOW_TANGENTLINEAR_RUN
332      - ALLOW_ECCO_OPTIMIZATION
333    
334    checkpoint51m_post
335    o incorporating changes to get TAMC/TAF working in genmake2
336      - added new TAMC/TAF targets to the Makefile
337      - various cleanups related to package handling
338      - these changes should have no impact on the forward model
339    
340    checkpoint51l_post
341    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
342     - faster algorithm for cal_addtime.F
343     - higher precision arithmetic, where needed
344     - pkg/exf *startdate variables changed from calendar date to
345       model integration time
346    
347    checkpoint51l_pre
348    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
349    o enable to apply restoring on S & T only in a latitude band.
350    o update output (external_forcing_surf modif. change truncation errors)
351       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
352    
353    checkpoint51k_post
354    o change default to: useNHMTerms=.FALSE.
355     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
356       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
357     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
358        exp1, ideal_2D_oce
359     - change data file of oceanic exp (leave the results unchanged for now)
360       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
361    o set gravitySign automatically according to the vertical coordinate used
362      (and change sign: back to "logical" value: +1 when R increases downward)
363    o added an include barrier to the default CPP_OPTIONS.h and
364      removed the #include "PACKAGES_CONFIG.h" from it
365    o fix a bug in mom_fluxform (from chk51j_post)
366    
367    checkpoint51j_post
368    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
369    o adjusted some flow directives (dynamics, thermodynamics)
370    o added cubed-sphere case to test cost function
371    o heckpoint_lev?_directives.h now include
372      pkg-specific directives, whenever those are enabled.
373    o Moving pkg-specific flow directives to corresponding pkg
374      Moving pkg-specific differentiation list to corresponding pkg
375      Moving pkg-specific checkpoint-lev storing to corresponding pkg
376      ---> conventions are
377           - pkg_ad.flow
378           - pkg_ad_diff.list
379           - pkg_ad_check_lev?_dir.h
380    
381    checkpoint51i_post
382    o merge of the branch-genmake2
383      - knowingly breaks the older genmake
384      - automatic generation of all ALLOW_${PKG_NAME} defines
385      - new testreport supersedes older testscript
386    o large number of package inclusion and header cleanups
387    checkpoint51i_pre
388    
389    o new output for adjoin of global ocean vector invariant
390    o fix for checkpoint of thermodynamic seaice and bulk_force
391    o Steph gchem various cleanups
392    
393    checkpoint 51h_pre
394    o fixed some single quotes
395    o modify gchem pkg to be more versatile
396    o modifications to clean up dic pkg
397    o add pkg/cfc
398    
399    checkpoint51g_post
400    o provide links for ARPACK and ADM*TLM
401    o start removing verification/vero/
402    o update AD-related stuff
403      (in particular some IF-statements in model/src/ routines)
404    o adding to verification/global_ocean.90x40x15/ adjoint of
405      vector invariant setup
406    
407    checkpoint51f_post
408    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
409    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
410      of tracer Green's fucntions for ocean inversion project.
411    
412    checkpoint51f_pre
413    o Added on-the-fly spatial interpolation capability
414        "USE_EXF_INTERPOLATION" to pkg/exf.
415      - This is a temporary Cartesian-grid hack until
416        the super-duper ESMF coupler becomes available.
417      - See verification/global_with_exf/README for usage example.
418      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
419        flags and modified pkg/seaice accordingly.
420    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
421        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
422        non-local transport term.
423    
424    checkpoint51e_post
425    o pkg/mom_vecinv:
426      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
427      - add time-ave diagnostic of vorticity advection.
428    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
429    o atmospheric geopotential: - include water vapor effect;
430                                - use p^kappa in p* scaling.
431    o land pkg: read initial state from files.
432    o AIM : add stratospheric drag in the upper level
433    
434    checkpoint51d_post
435    o change function ILNBLNK (=> last non-blank char.) to return zero
436      (instead of the string length) when the string. char is empty
437    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
438    o modif's to restore TAMC compatibility
439      - avoid "_d" constructs in PARAMETER declarations
440      - avoid interrupting lines by comment lines
441    o Use cluster local disks for purely local I/O
442      vs. globally visible disks needed for ctrl stuff
443      (merged from ecco-branch)
444      - new active_file_loc... and mdsio_..._loc routines
445      - affected packages: autodiff, ctrl, grdchk, mdsio
446    
447    checkpoint51c_post
448    o introducing integer flag debugLevel
449      - debLevZero: suppress all output
450      - debLevA: standard
451      - debLevB: equivalent to current debugMode=.TRUE.
452    o introducing pathname variable mdsioLocalDir for mdsio
453      that can be specified at runtime
454      (relevant for cluster I/O to local disk)
455    `
456    >>>checkpoint51b_post
457    adjoint of ptracers
458    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
459    o extended state in checkpoint_lev?, etc.
460    o alternative ctrl/cost with tr1 or ptracer
461    o new comlev1_bibj_ptracers
462    o new ptracers.flow
463    o made ptracers_forcing same as external_forcing_s
464    o added verification for adjoint with ptracers
465      - adm. grdchk fail so far
466      - tlm. grdchk OK
467      - checked tapelev/comlev recomputations: OK
468    <<<checkpoint51b_pre
469    
470    checkpoint51a_post
471    o added code for biogeochemistry package
472      - new pkgs: dic, gchem
473      - new subroutine in ptracers
474    o modify code for biogeo packages
475      - in model/src and pkg/ptracers
476    
477    checkpoint51
478    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
479      - autodiff, ctrl, exf, grdchk, seaice
480      kept separate packages
481      - cost, ecco, obcs
482    o updating verification/internal_wave, verification/lab_sea
483      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
484    
485    checkpoint50i_post
486    o Preparing next differentiable checkpoint and sync
487      of MAIN vs. ecco-branch
488      - 1st step: this one is differentiable
489      - 2nd step: next(! not this) checkpoint will have updated packages
490                  from ecco-branch)
491    
492    checkpoint50h_post
493    o new package "land": provide surface BC for AIM.
494    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
495    o AIM: use true log-P extrapolation for near surface temp (= as in
496        F.Molteni paper) ; update aim.5l_cs output.
497    o New variable in PARM03 for more flexible pickups
498    o somewhat cleaned package initialisation sequence for
499      ctrl/ cost/ ecco/ in packages_... routines
500    
501    checkpoint50g_post
502    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
503      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
504      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
505        made the default because of faster convergence than ADI
506    
507    checkpoint50f_post
508    o exf totally restructured
509      - replaced all exf_set_ routines by one generic exf_set_gen.F
510        and made sure it's still differentiable
511      - split exf_getffields.F into new exf_bulkformulae.F
512      - exf_inscal_/exf_outscal_ suffixes consistent with field names
513      - updated adjoint/makefile and relevant verif. accordingly
514    
515    checkpoint50f_pre
516     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
517          + change Evap over land. (update aim.5l_cs output)
518     o added missing .cvsignores and made uniform across expts
519     o changed configuration of tidal_basin_2d expt
520     o added pkg/debug functions for tracing code in fatal crashes
521     o tidied pkg/monitor to use MONITOR_OPTIONS.h
522     o new fn in pkg/monitor to stop model if solution grows too big
523     o removed lots of single quotes from comments
524    
525    checkpoint50e_post
526    o make KPP work with PTRACERS
527     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
528       nearly a copy of kpp_transport_s
529     - there is no analogue to SurfaceTendencyS, so I have to use
530       gPtr(of the surface layer) instead
531    o add a new platform SunFire+mpi (SunFire 15000) to genmake
532    checkpoint50e_pre
533    
534    checkpoint50d_post
535    o change kpp output from multiple-record state files to single-record state
536      files analogous to write_state.F
537    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
538      analogous to the cg2d-related output.
539    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
540      so that writing to internal file fn (with length 512) fails.
541    checkpoint50d_pre
542    
543    checkpoint50c_post
544    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
545    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
546    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
547    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
548    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
549    
550    checkpoint50c_pre
551    Merging from release1_p13:
552    o bug fix for pkg/seaice dynamic solver
553    o Added SEAICE_initialHEFF to pkg/seaice
554    
555    checkpoint50b_post
556    o store u*,v* in gU,V instead of in guNm1,gvNm1
557    o in order to put the momForcing out of the Adams-Bashforth:
558      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
559      to timestep.F
560    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
561    o re-generate output for highly sensitive test-exp:
562       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
563    
564    checkpoint50b_pre
565    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
566    o corrected CPP option mismatch in exf_Bulk... functions for case
567      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
568    
569    checkpoint50a_post
570    o Bug fix for merging between c50 and KPP.
571      ikey was passed from thermodynamics to kpp_calc via
572      common block rather than being recomputed in kpp_calc,
573      in contradiction with new key itdkey.
574      New key ikppkey created, and tamc.h headers updated.
575    
576    checkpoint50
577    - 2nd step of merge with ecco-branch:
578      merge changes in ecco-branch back into main trunk
579    - bug fix in find_alpha
580    - more storing in gmredi_calc_tensor.F, kpp_routines.F
581    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
582    - merged some sliced AD support routines
583    
584    checkpoint49
585    merged from ecco-branch:
586    o exf:
587      - Enable initialisation of forcing fields to constant
588        (runtime) values.
589      - in exf_getffields.F
590        Reduce i-/j-loop to interior domain, discarding overlaps.
591        That also fixes wrong TAF-key computations for key_1, key_2
592        with bulf formulae.
593      - exf_init.F modify #ifdef for exf_init_evap
594      - exf_getffieldrec.F, ctrl_getrec.F
595        The following INT-usages are not safe:
596          fldsecs  = int(fldsecs/fldperiod)*fldperiod
597          fldcount = int(fldsecs/fldperiod) + 1
598        and were modified.
599    o autodiff: checkpoint_lev...
600      - updated storing for bulk formulae (some arrays were missing)
601      - added state for seaice package
602      - synchronized with main branch
603    o DIVA:
604      Modif.s in
605      - the_main_loop.F
606      - the_model_main.F
607      and added cost_final_restore.F cost_final_store.F
608      o With these changes, it is possible to fully separate
609        the first forward run to compute the cost function (mdthe_main_loop)
610        and adjoint runs over individual DIVA intervals (adthe_main_loop)
611        into separate model executions.
612        This enables better tuning of DIVA to given queue sizes.
613      o Loss of cost function value in consecutive DIVA runs is
614        fixed by storing to 'costfinal' file.
615      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
616        beginning/end of adjoint integration is accounted for.
617      The current changes apply to TAF-1.4.26.
618      TAF has one remaining bug, requiring one manual change
619      (see MITgcm manual).
620    o cal: synchronized between MAIN and ecco-branch
621    
622    checkpoint48i_post
623    o Changes to restore differentiability of code w.r.t. previous tag
624      (mostly adding new routines to make list and replacing
625      pressure by totPhiHyd).
626    o Updated and merged grdchk package
627      - has both ADM and TLM checks
628      - works for single- and multi-proc.
629      - output cleaned
630      - worked successfully for parallel DIVA
631    o genmake:
632      - Adding -platform=SP4
633      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
634    o Modif. for DIVA:
635      ctrl_unpack should not be called in intermediate DIVA interval.
636      (similar thing would apply for active files such as
637      tbar, sbar, psbar, which should not be reinitialised;
638      only relevant for ecco-branch)
639    
640    checkpoint48h_post
641    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
642    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
643    o Added SEAICE_initialHEFF to pkg/seaice
644    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
645    
646    checkpoint48g_post
647    --- EOS:
648    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
649      store total Potential in totPhyHyd for diagnostics & EOS.
650    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
651    --- Pressure/geopotential gradient:
652    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
653    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
654      ( changes results of global_ocean_pressure )
655    o NLFS + z-coord.: add eta*Rho' contribution.
656    o accurate phiHyd when using interface-W at the middle between 2 centers
657     ( changes results of ideal_2D_oce )
658    o includes r* 2nd term in potential gradient.
659    
660    checkpoint48f_post
661    Merging from release1_p12:
662    o Modifications for using pkg/exf with pkg/seaice
663      - improved description of the various forcing configurations
664      - added basic radiation bulk formulae to pkg/exf
665      - units/sign fix for evap computation in exf_getffields.F
666      - updated verification/global_with_exf/results/output.txt
667    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
668      (SBO) core products, including oceanic mass, center-of-mass,
669      angular, and bottom pressure (see pkg/sbo/README.sbo).
670    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
671      to avoid negative values in shallow regions.
672      - updated verification/natl_box/results/output.txt
673      - updated verification/lab_sea/results/output.txt
674    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
675    o Added useSingleCpuIO option (see PARAMS.h).
676    o Updated useSingleCpuIO option in mdsio_writefield.F to
677      work with multi-field files, e.g., for single-file pickup.
678    o pkg/seaice:
679      - bug fix in growth.F: QNET for no shortwave case
680      - added HeffFile for specifying initial sea-ice thickness
681      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
682    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
683      kpp_transport_t.F, forward_step.F, and the_main_loop.F
684    o pkg/seaice:
685      - adjoint-friendly modifications
686      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
687    
688    checkpoint48e_post
689    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
690    o dynamics: change definition of computational domain & adapt mom_fluxform
691      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
692    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
693        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
694        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
695        global_ocean.90x40x15 global_with_exf global_ocean_pressure
696        inverted_barometer solid-body.cs-32x32x1
697      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
698    
699    checkpoint48d_post
700    o in preparation for r*:
701     a) use pre-computed gradient of hydrostatic potential:
702        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
703     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
704        => affects results of glob_oce_pressure (different truncation error)  
705      update output.txt of ideal_2D_oce & global_ocean_pressure
706    
707    checkpoint48d_pre
708    o in preparation for r*:
709      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
710      pass the 2 comp. of the grad. as arguments to momentum S/R.
711      but for the moment, only used if it does not change the results.
712    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
713    
714    checkpoint48c_post
715    Modifications in treatment of initial flux forcing controls
716    to avoid extra storing of flux fields.
717    
718    checkpoint48c_pre
719    o Added tidal_basin_2d experiment (currently 1D!)
720    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
721    
722    checkpoint48b_post
723    o r* coordinate added in #ifdef NONLIN_FRSURF block.
724     (modification to pressure gradient not yet implemented)
725    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
726      (for U & V) that are used for vertical advection of momentum.
727    
728    checkpoint48a_post
729    o In preparation for r*, use temp. array to compute vertical transport
730       in flux-form momentum pkg. => change results of few test-exp.
731      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
732                        lab_sea, natl_box & plume_on_slope
733    
734    checkpoint48
735    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
736    
737    checkpoint47j_post
738    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
739    o moved adexch from forward_step to addummy_in_stepping
740    o added exch in ctrl_map_...
741    o aveFreq.=0. at end of cost_final to avoid overwrite in
742      reverse checkpointing loop
743    o Yet more changes in gmredi:
744      * adgmredi_calc_tensor
745        avoiding all recomputation of gmredi_slope_limit
746      * adgmredi_x/y/rtransport
747        added flag for excessive storing to avoid recomp. of
748        u/v/rtans, dTdx/y/z
749        -> this is not really necessary and very memory-consuming
750      * adgmredi_slope_psi:
751        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
752      * gmredi_slope_limit
753        re-activated full calculation of taperfct for case 'ac02'
754    o updating verification/ adjoints of carbon, global_ocean.90x40x15
755    
756    checkpoint47i_post
757    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
758    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
759      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
760    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
761    o gmredi: fix few bugs.
762    
763    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
764    This will be a good checkpoint to plug into the ecco-branch.
765    o few modif.'s to get latest version adjointed
766      (mainly kick out code in ini_linear_phisurf)
767    o modif's to run adjoint with exactConserv
768    o case GM_BOLUS_ADVEC should be cleaned
769      S/R gmredi_slope_psi should be cleaned
770    o verification/carbon now has exactConserv=.TRUE.
771    
772    checkpoint47g_post
773    o time-average AIM output: becomes independent from statvars time-average
774      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
775    o After TAF bug fix:
776      Tested adjoint of gmredi package.
777      Tests were done with checkpoint47 rather than with latest
778      checkpoint47f_post since the latter is broken for the adjoint
779      verification/carbon/ contains both ADM and TLM gradient checks.
780    Here they are, before they get changed/lost/stolen.
781    Mostly modif.'s to fix numerical sensitivities.
782    Gradient checks OK for
783    - GM_taper_scheme:
784      * clipping
785      * ac02
786      * linear
787      * glw91
788      * dm95
789      * ldd97
790    - GMREDI_OPTIONS:
791      * GM_VISBECK_VARIABLE_K
792      * GM_NON_UNITY_DIAGONAL
793      * GM_EXTRA_DIAGONAL
794      * GM_BOLUS_ADVEC
795    in conjunction with data.gmredi parameters to be checked in
796    in a few minutes under verification/carbon/code/
797    
798    checkpoint47f_post
799    Merging from release1_p10:
800    o modifications for using pkg/exf with pkg/seaice
801      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
802        and SEAICE_EXTERNAL_FLUXES
803      - pkg/exf CPP options EXF_READ_EVAP and
804        EXF_NO_BULK_COMPUTATIONS
805      - usage examples are Experiments 8 and 9 in
806        verification/lab_sea/README
807      - verification/lab_sea default experiment now uses
808        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
809    
810    checkpoint47e_post
811    o created a tag prior to creating a branch
812    
813    checkpoint47d_post
814    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
815      at the bottom boundary had an erroneous half slip boundary condition
816    o added bottom drag and no slip boundary condition capabilities to
817      oceanic pressure coordinates code
818    o added new verification experiment global_ocean_pressure, this experiment is
819      also described in the tutorial section of the manual
820    checkpoint47d_pre
821    
822    checkpoint47c_post
823    o Added a verification experiment for a global cubed-sphere ocean run
824      -  verification/global_ocean.cubed32x32x30
825      -  uses pkg/therm_seaice and pkg/bulk_forcing
826    
827    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
828    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
829      when using P-coordinate; only implemented for atmospheric config.
830    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
831      NOTES: requires option NONLIN_FRSURF to be "#define".
832    o update advect_xz/results/output.txt (left from checkpoint44g_post)
833    
834    checkpoint47b_post
835    Merging from release1_p9:
836    o pkg/seaice
837      - removed GOTO's and added taf directives
838      - double precision constants to reduce the g77 (Linux)
839        to F77 (SGI) differences reported in release1_p8
840    o tools/genmake
841      - added SGI options
842    o verification/testscript
843      - updated to that of checkpoint47a_post
844    o verification/global_ocean.90x40x15/input/eedata
845      - modified for SGI f77 compatibility
846    o verification/lab_sea
847      - added description of sea-ice model
848      - added missing matlab routines
849      - added test of thermodynamics parallelization
850    
851    checkpoint47a_post
852    o new pkg: aim_v23
853     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
854       for now, keep the same surface forcing as before.
855     - Part-Cell implemented into AIM; check that Heat & Water are conserved
856     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
857     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
858    o add diagnostic of surface correction term in monitor output
859    
860    o bulk_force and therm_seaice
861    - Two packages:  bulk_force (Bulk forcing)
862      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
863    - Earlier integration from Stephaine Dutkiewicz
864      and Patrick Heimbach.
865    - Two ifdef statements for compile time,
866       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
867    
868    checkpoint47
869    differentiable version of checkpoint46n_post
870    o bug fix in quasihydrostaticterms
871    o * "clean" adjoint code (in terms of extensive recomputations)
872        can now be obtained for all GMREDI options (i.e. for
873        - GM_VISBECK_VARIABLE_K
874        - GM_NON_UNITY_DIAGONAL
875        - GM_EXTRA_DIAGONAL
876        - GM_BOLUS_ADVEC )
877      * However, wrong gradient check problem remains unsolved.
878      * New CPP options have been introduced for different
879        tapering schemes
880    o external_fields_load now part of differentiation list
881    o pressure needs multiple storing;
882      would be nice to have store_pressure at beginning or
883      end of forward_step, e.g. by having phiHyd global (5-dim.)
884      (NB: pressure is needed for certain cases in find_rho,
885      which is also invoked through convective_adjustment).
886    o recomputations in find_rho for cases
887     'JMD95'/'UNESCO' or 'MDJWF' are OK.
888    o #define ATMOSPHERIC_LOADING should be differentiable
889    o ini_forcing shifted to begining of initialise_varia
890    o Incorporating QNVS line search routines into MITgcm
891      (this is separate code, and therefore not under pkg)
892      lsopt/, optim/
893    o Updated verification/carbon/
894      - #define GM_VISBECK_VARIABLE_K
895      - GM_taper_scheme    = 'ldd97'    
896    
897    checkpoint46n_post
898    Merging from release1_p8:
899    o verification/natl_box:
900      updating new external_fields_load routine
901    o New package: pkg/seaice
902      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
903      The sea-ice code is based on Hibler (1979-1980).
904      Two sea-ice dynamic solvers, ADI and LSR, are included.
905      In addition to computing prognostic sea-ice variables and diagnosing
906      the forcing/external data fields that drive the ocean model,
907      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
908      The implied surface heat flux is then stored in variable
909      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
910      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
911      non-local transport term.  Because this call precedes model
912      thermodynamics, temperature under sea-ice may not be "exactly" at
913      the freezing point by the time theta is dumped or time-averaged.
914      N.B.: fairly large differences in accuracy occur across
915            different platforms/compilers; comparison between
916            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
917            generated output gives:
918       T           S           U           V
919      C D M    c        m  s        m  s        m  s        m  s
920      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
921      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
922      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
923    
924      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
925    o GAD:
926      - generated new common blocks to account for call of
927        same gad routines with differing traceridentities
928        (needed to modify tracerIdentity indices in GAD.h)
929      - generated separate common blocks for case useCubedSphereExchange
930        (Department of Futurology)
931      - parameter lists to gmredi_?transport: added tracerIdentity
932      - added new key indices to tamc.h
933    o external_fields_load:
934      - added this routine to TAF list
935      - needed to make some common blocks global and additional storing
936        along the same lines as exf package (checkpoint_lev?_directives.h)
937    o exf:
938      updated external forcing package
939      - bug fixes carried over from ecco-branch
940        (missing OBCS_OPTIONS.h in two routines)
941      - enable easy to use "no forcing".
942      - added exf I/O for atmospheric loading
943      - added exf I/O for runoff data
944      - transfered scaling between exf <-> MITgcm to exf namelist
945    o Adding new verification experiment global_with_exf.
946      This verification experiment is almost identical to the
947      global_ocean.90x40x15 experiment, except that it uses
948      the exf (and cal) package instead of the
949      external_fields_load routine (cf README file).
950    
951    checkpoint46m_post
952    o modified testscript to return -- when there are no lines of "%MON" output
953    o added new flag "quasiHydrostatic" for QH mode
954      and new routine quasihydrostaticterms()
955    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
956      New routine: mom_u_coriolis_nh()
957    o fixed sign of non-hydrostatic metric terms in u and v equations.
958      Depend on correct sign of gravitySign.
959    o added work.pc* to .cvsignore in aim directories using ifc
960    o introduced flag for controllin non-hydrostatic metric terms
961    o removed gravitySign from PARM04
962    o switched to g77/ifc from pgf77 in aim experiments
963    
964    checkpoint46l_post
965    o made convective adjustment work with pressure coordinates:
966     - changed the direction of k-loop in convective_adjustment.F for the
967       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
968     - adjusted the reference pressure k-index in convective_adjustment.F
969     - adjusted the convection condition in convect.F (in analogy to
970       calc_ivdc.F)
971     - convective_adjustment no longer computes anything on the halos
972     - removed the warnings about negative salinity from find_rho.F and
973       find_alpha.F; instead the new routine look_for_neg_salinity, called
974       at the beginning of find_rho, find_alpha, and find_beta, does a
975       check of the entire slice, if CPP-option
976       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
977    checkpoint46l_pre
978    
979    checkpoint46k_post
980    o fixed the verification/global_ocean.90x40x15 experiment:
981     - new bathymetry (the world according to A., JMC, and M.)
982     - new initial fields and forcing fields (*.bin files)
983     - new POLY3.COEFFS (for the next release one should switch to a full
984       equation of state: JMD95P or MDJWF)
985     - fixed several errors and redundancies in the data file
986     - experiment uses looped cells
987     - added matlab directory with diagnostic scripts for plotting of output
988    
989    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
990     - read AIM physics parameters from a file (data.aimphys)
991     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
992    
993    checkpoint46j_post
994    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
995    o move wVel computation at the end of the time step, in S/R integr_continuity
996    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
997    o update timeave pkg for wVel diagnostic.
998    checkpoint46j_pre
999    
1000    checkpoint46i_post
1001    o Clean up AIM package (and keep the results unchanged):
1002      include CPP_OPTION and use IMPLICT NONE in all routines ;
1003      declare all the variables _RL ; use _d 0 for all numerical constants.
1004      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1005    
1006    checkpoint46h_post
1007    o cleaned up the use of rhoNil and rhoConst.
1008      - rhoNil should only appear in the LINEAR equation of state, everywhere
1009        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1010        and the dynamical equations are all divided by rhoConst
1011    o introduced new parameter rhoConstFresh, a reference density of fresh
1012      water, to remove the fresh water flux's dependence on rhoNil. The default
1013      value is 999.8 kg/m^3
1014    o cleanup up external_forcing.F and external_forcing_surf.F
1015      - can now be used by both OCEANIC and OCEANICP
1016    checkpoint46h_pre
1017    
1018     Added code to convert surface volume flux (fresh water) into
1019     a mass flux when using P coordinates in the ocean (OCEANICP).
1020     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1021    
1022    checkpoint46g_post
1023    o Include a new diagnostic variable phiHydLow for the ocean model
1024      - in z-coordinates, it is the bottom pressure anomaly
1025      - in p-coordinates, it is the sea surface elevation
1026      - in both cases, these variable have global drift, reflecting the mass
1027        drift in z-coordinates and the volume drift in p-coordinates
1028      - included time averaging for phiHydLow, be aware of the drift!
1029    o depth-dependent computation of Bo_surf for pressure coordinates
1030      in the ocean (buoyancyRelation='OCEANICP')
1031      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1032        Theta, Salinity, and Pressure in the parameter list. This routine is
1033        presently contained in find_rho.F. This routine does not give the
1034        correct density for 'POLY3', which would be a z-dependent reference
1035        density.
1036    o cleaned up find_rho
1037      - removed obsolete 'eqn' from the parameter list.
1038    o added two new verification experiments: gop and goz
1039      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1040    checkpoint46g_pre
1041    
1042    checkpoint46f_post
1043    o Enable tangent linear (forward mode) gradient checks:
1044      - extended active file handling to g_... files
1045      - added TANGENT_SIMULATION to theSimulationMode
1046      - extended grdchk package accordingly
1047    o added tangent linear setup in verification/carbon/code_ftl
1048    o added adjoint setup in verification/front_relax/code_ad
1049    
1050    checkpoint46e_post
1051    o Added new equation of state -> MDJWF
1052      - EOS of McDougall et al., 2002, JAOT, submitted
1053      - caveat: the equation of state is only valid for a smaller (more
1054        realistic?) range of values than JMD95P/Z and UNESCO
1055      - added masks to the calculation of pressure in store_pressure
1056      - added more check values for density in check_eos (ini_eos.F), some of
1057        the old check values are out of the range of the MDJWF-eos, so don't
1058        expect perfect matches for those
1059    checkpoint46e_pre
1060    
1061    checkpoint46d_post
1062    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1063      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1064      case of pressure coordinates. eosType='JMD95Z' in
1065      combination with buoyancyRelation='OCEANICP' now causes an error.
1066    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1067      in find_alpha/beta.
1068    checkpoint46d_pre
1069    
1070    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1071      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1072    
1073    checkpoint46c_post
1074    o Changes necessary for ocean in p-coordinates
1075     -  Added new buoyancy relation = 'OCEANICP'
1076     -  Added new parameters = gravitySign (this used to be contained inside
1077        the factor dRdZ which I added when we first switched to R coordinates).
1078     X GM/Redi is not compatible (yet)
1079     X bottom drag and no-slip need to be debugged.
1080    checkpoint46c_pre
1081    
1082    checkpoint46b_post
1083    o Added new equation of state -> JMD95Z and JMD95P
1084      - EOS of Jackett and McDougall, 1995, JAOT
1085      - moved all EOS parameters into EOS.h
1086      - new routines ini_eos.F, store_pressure.F
1087    o Added UNESCO EOS, but not recommended because it requires
1088      in-situ temperature (see JMD95)
1089    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1090      unesco.f to be used with POLY3
1091    checkpoint46b_pre
1092    
1093    checkpoint46a_post
1094    o Added (atmospheric) pressure loading
1095      - new field in FFIELDS.h, etc...
1096      - new cpp flag ATMOSPHERIC_LOADING
1097    o Changed hFacC to _hFacC in calc_phi_hyd.F
1098    o Added SHORTWAVE_HEATING to some files for consistency
1099    checkpoint46a_pre
1100    
1101    checkpoint46
1102    further merges from release1_p5
1103    o new ctrl package
1104      - adopted from ECCO environment to enable optimization
1105      - added Eliassen Palm fluxes to controls
1106    o added Eliassen Palm flux controls to gradient check package
1107    o cost package
1108      - Compatible with new ctrl package
1109      - added Eliassen Palm cost hooks
1110      - modif's of existing cost functions
1111    o Adjoint-related bug fixes in kpp:
1112      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1113      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1114    o autodiff package
1115      - flow directives:
1116        + new for S/R do_the_model_io
1117        + enhanced for S/R checkpoint
1118        + new gmredi.flow
1119      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1120        disable adcommon.h/g_common.h by default.
1121      - fixed problem for adjoint of global_max
1122    o modified verification/carbon/
1123    o New setup for adjoint of global_ocean
1124    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1125    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1126    o incorporated hooks for sponge layer code (external_forcing.F)
1127    
1128    checkpoint45d_post
1129    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1130    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1131      (affects plume_on_slope "cg2d" output)
1132    o add new parameter deltaTfreesurf for free-surface time stepping
1133    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1134    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1135    o change phiMin in exp1 (to agree with documentation)
1136    o add new flags:
1137     - T,S forcing inside/outside Adams-Bashforth
1138     - turn off temp,salt advection and/or forcing
1139     - for each tracer, define internal flag for multiDimAdvection & A-B
1140    o monitor: change definition of KE to check conservation of Energy
1141    
1142    checkpoint45c_post
1143    o Removed f90 comments ("!")
1144    o Modified initialisations to enable exf package for MITgcm
1145      (without invoking ECCO_PACKAGE).
1146    o modifications to gradient check package (Martin Losch)
1147      - enable centered differences
1148      - modified format of standard output
1149    
1150    checkpoint45b_post
1151    o cleaned exchange calls in cg2d
1152    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1153    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1154      to configure barotropic setup (Martin Losch)
1155    o moved some initialisations within bi,bj loop in dynamics
1156      (TAF flow dependency)
1157    o in initialise_varia, moved call packages_init_variables
1158      before convective_adjustment_init
1159      (corresponding adjustment of TAF tape initialisation).
1160    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1161    
1162    checkpoint45a_post
1163    o compute Rho over the whole domain (extend iMin,jMin indices)
1164    o specific exchange for X-slice domain (case Ny=1)
1165    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1166    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1167    
1168    checkpoint44h_post = checkpoint45
1169    o Fix to restore differentiability:
1170      place at which packages_init_variables is called in
1171      initialise_varia is crucial for reverse control flow.
1172    o modifications in GMRedi to enable stable adjoint
1173      (corresponding modif's in thermodynamics, dynamics)
1174    o added missing hook for sponge layer code in external_forcing
1175    o modified test cost functions
1176    o storing in gad_advection (plus removal of write(0,*)!
1177    o missing headers TR1.h added in convective_adjustment routines
1178    o errorMessageUnit set non-equal zero in eeboot
1179      (conflict on some platforms, e.g. IBM SP3)
1180    o modified carbon verif.
1181    
1182    checkpoint44h_pre
1183    o vertical grid option: allow to put the Interface at the middle between
1184      2 cell-centers ; replace delZ in pkg/kpp by drF.
1185    o GM Advective form: Tracers are advected using the residual transport (=
1186      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1187    
1188    checkpoint44g_post
1189    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1190      results) ; ifdef missing in thermodynamics.F
1191    
1192    checkpoint44f_pre,checkpoint44f_post
1193    o added PTRACERS package
1194      This allows an arbitrary number of passive tracers to be integrated
1195      forward simultaneously with the dynamicaly model.
1196      + Implemented so far:
1197        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1198        - I/O and checkpointing
1199        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1200      + Not implemented so far:
1201        - KPP
1202        - OBCS
1203      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1204        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1205        line in data.pkg.
1206      + This package is disabled by default since it increases storage.
1207    
1208    
1209    o testscript: added -cleanup option
1210    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1211                 b) enable to filter 2D fields.
1212    
1213    checkpoint44e_pre,post
1214    o re-wrote convective adjustment to use pre-calculated weights
1215      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1216      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1217      Original calls to convect() still in place.
1218    
1219    chkpt44d_pre,post
1220    o added missing EXCLUDE_MONITOR flags
1221    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1222      (incompatible typ in MIN/MAX expressions caused problems
1223      on IBM SP3)
1224    o in genmake added variable MAKEDEPEND
1225      plus resetting for case SunOS
1226    o added timer_stats.c routine for IBM SP3
1227    o removed variables in dynamics
1228    !!! I forgot to create tag chkpt44d_pre !!!
1229    !!! But chkpt44d_pre = chkpt44c_post    !!!
1230    
1231    o real fresh water flux implemented with non-linear free-surface.
1232    
1233    chkpt44c_pre,post
1234    o few fix (mask in shap_s2, EmPmR in external_field_load,
1235      USE_NATURAL_BCS in solve_for_P);
1236    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1237    
1238    checkpoint44b_pre/_post
1239    o merge of relevant stuff from the ecco-branch:
1240      - genmake: removed $S64 overwrite for case SunOS
1241      - pkg/exf: update and corrections for field swapping and obcs
1242      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1243                  harmonized between ECCO and MITgcm
1244      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1245                      updated checkpointing_lev... lists for obcs
1246      - model/src: minor changes in forward_step, plot_field
1247                   added directive for divided adjoint in the_main_loop
1248      - pkg/mdsio: added mdsio_gl_slice
1249    
1250    o check parameters & config (chkpt44a_pre,post)
1251    o OBC and NonLin_FrSurf.
1252    
1253    checkpoint44
1254    o fix bug in mom_vi_del2uv
1255    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1256    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1257    o update AIM experiments (NCEP input files)
1258    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1259    o added some stuff for AD
1260    
1261    checkpoint43
1262    o added two new advection tests
1263    o added global 4x4 degree ocean test
1264    o added test of H&S94 with free surface on cube
1265    o some final mods for gradient check, adjoint,...
1266    
1267    checkpoint42
1268      Fixed AD-related problems:
1269    o Store directives up-to-date with re-arranged Adams-Bashforth
1270      (mainly thermodynamics.F)
1271    o New store directives for multi-dim. advection schemes
1272      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1273      * new common block and key passkey
1274      (mainly gad_advection.F)
1275    o Modified store directives for split of dynamics/thermodynamics
1276      for the case ALLOW_KPP
1277    o Cleaned argument list for timestep_tracer.F
1278    
1279    checkpoint41
1280    o re-formatted/added comments in prologues of key subroutines
1281      to work with protex
1282    
1283    checkpoint40
1284    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1285    o added FLT (floats) package from Arne along with demo. experiment
1286    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1287      implementation of forward-in-time forcing terms
1288    o more mods for non-linear free-surface including new variable
1289    o modified multi-dim method to work on cube
1290    o bug fix in KPP (from DM)
1291    
1292    checkpoint40pre9
1293    o added DST advection schemes
1294    o fix MPI bug on SGI's
1295    o modifications for non-linear free-surface
1296    o fixed conditionals for fixed flow/passive tracer only mode
1297    o added tension/strain form of stress tensor
1298    o changes to commenting of arguments for TAF/TAMC
1299    o added/updated many matlab scripts
1300    o added multi-dimensional advection method for tracers
1301      
1302    checkpoint40pre8
1303    o new package rw/
1304      Added method for dumping intermediate local arrays:
1305      mdsio_writetile - same as mdsio_writefield except works from inside
1306                        bi,bj loop
1307      mdsio_writelocal - same as mdsio_writetile except works for local
1308                         arrays
1309      write_local_r? - higher-level wrapper for mdsio_writelocal
1310      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1311      Example given at end of mom_vecinv.F that dumps some local arrays.
1312    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1313      control flux-form versus vector invariant code.
1314      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1315      or genmake -DISABLE ...
1316    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1317      (additional storing is now needed for case vecinv;
1318      currently nothing implemented to switch this storing off
1319      in case fluxform is used since no CPP flag available).
1320    
1321    checkpoint40pre7
1322    o bug fix in dynamics.F
1323      calc_viscosity called before k=1,Nr loop.
1324    o added some #ifdef's ALLOW_PASSIVE_TRACER
1325    o cleaned initialisations in ctrl_map_ini
1326      related to TAF
1327    
1328    checkpoint40pre6
1329    o split dynamics into thermodynamics & dynamics
1330    o corresponding split of calc_diffusivity into
1331      calc_diffusivity, calc_viscosity
1332      (kpp_calc_diff, kpp_calc_visc).
1333    o Added diffkr, kapgm to control variables
1334    o bug fix in gmredi_slope_limit for ldd97
1335    
1336    checkpoint40pre5
1337    o proper initialization of Adams-Bashforth time stepping
1338      + uses forward step for very first step of model (iter=0)
1339    o re-generated *all* output since almost all output is modified by this
1340      change (sorry but we've been putting this one off for about 2 years)
1341      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1342        *not* regenerated since they are already out of date and I don't
1343        want to create the impression that they are suddenly working.
1344    o removed KAP stuff for DEC's
1345    o modified/added many .cvsignore files in */code and */input
1346    o added new expt "solid-body.cs-32x32x1"
1347      + this uses an alternative form of ini_curvilinear_grid.F which
1348        is not necessarily any better than the current one...
1349    
1350    checkpoint40pre4
1351    o added re-initialisations of utrans,vtrans,rtrans in
1352      calc_common_factors which are crucial for TAF.
1353    o extended iMin,jMin range for calc_common_factors,
1354      calc_diffusivity
1355    o added option ALLOW_PASSIVE_TRACER
1356    o a few minor updates and fixes
1357    
1358    checkpoint40pre3
1359    o created calc_gtr1.F for gad package
1360    o split the_main_loop and re-introduced forward_step
1361    o some recomputations of nIter0 for TAMC
1362    
1363    checkpoint40pre2
1364    o Updated to latest branch of AJA, JMC
1365    o Added gradient check package
1366    o Added routines for passive tracer handling
1367    o Added carbon sequestration sensitivity experiment
1368    
1369    checkpoint39
1370     o Modifications and fixes to support TAMC
1371       (mainly missing or wrong directives)
1372     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1373       in addummy_in_stepping
1374     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1375     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1376     o Included following packages:
1377       cal: calendar
1378       exf: external forcing
1379       ecco: essential routines to control use of cal, exf
1380             (NB: this is not the full ECCO environment)
1381     o disabled some packages by default in genmake
1382    
1383    checkpoint38
1384     o see notes_c37_adj.txt
1385     o corrected wrong layer index in external_forcing_t
1386     o replaced the_main_loop/forward_step by the_main_loop
1387     o removed forceoutput from write_state
1388       (replaced criteria for initial/final state)
1389     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1390    
1391    checkpoint37
1392     o mdsio.F routine split and packaged in pkg/mdsio
1393       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1394        used unless genmake -disable=mdsio)
1395     o allow a more precise surface-geopotential gradient for the atmosphere
1396       taking into account the change in space of Alpha (=1/rho) at the surface.
1397     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1398       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1399     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1400       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1401       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1402     o Time-Average diagnostics defined as a pseudo package "timeave".
1403     o pickup files : old pickup (before c35) did not work with new code (c35
1404       and after) unless activating 2 commented lines in initialise-varia.
1405     o Non-Hydrostatic pickup file Pb fixed.
1406     o bug with Rigid-lid version (since c35) fixed.  
1407    
1408    checkpoint36
1409     o implement Crank-Nickelson barotropic time-stepping
1410     o recover Time-Average diagnostics
1411     o fix Pb in checkpoint (PR#19)
1412     o AIM become a standard package ; clean unused CPP_kees
1413    
1414    checkpoint35
1415     o subtantial rewrite of dynamics.f
1416     o allows staggered time-stepping
1417     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1418     o added bottom drag (linear + quadratic)
1419    
1420    checkpoint34
1421     o Modified exchange routines for correct reverse simulation.
1422     o Added verification output to comply with bug fix in impldiff.F
1423       as of c33 (exp2, natl_box).
1424     o Corrected store directives in dynamics.F
1425     o Corrected array boundaries in impldiff.F
1426     o Corrected array dimensions in gmredi.
1427       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1428     o Added routine GLOBAL_SUM_INT to global_sum.F
1429     o Added mdsio_gl.F for ECCO purposes.
1430    
1431    checkpoint33
1432     o Fixed bug in lower BC in impldiff.F
1433     o Fixed confusion about units of forcing arrays in FFIELDS.h
1434       namely Fu,Fv,Qnet,Qsw,EmPmR:
1435       - Removed verification/natl_box/code/external_fields_scale.F
1436         (did not differ from that in model/src)
1437       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1438         (see FFIELDS.h for description)
1439       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1440         kpp_calc.F and kpp_transport_t.F
1441       - Removed model/src/external_fields_scale.F and calls to it
1442       - verification/natl_box uses flux data with "atmospheric" sign so
1443         a special version of external_fields_load.F is used to
1444         change the data as it's read in. This way, the arrays
1445         have the right units and signs at all times tha a user could
1446         possibly use them.
1447     o Corrected genmake to delete a temporary file during configuration
1448    
1449    checkpoint32
1450     o Scaling of forcing fields moved from external_forcing.F to
1451       external_fields_scale.F, called directly after loading fields.
1452     o Surface relaxation terms added to surface tendency fields in
1453       extra subroutine.
1454     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1455       fields.
1456     o Changes in GMRedi to comply with packaging structure.
1457     o Modifications and bug fixes in KPP package.
1458     o Verification experiment for KPP added (verification/nat_box/)
1459    
1460    checkpoint31
1461     o Packages interface brought in line with defined standard
1462       -> new routines packages_...F
1463       -> changes in initialise_fixed.F, initialise_varia.F
1464       -> enables initialisation interface for ECCO package
1465     o Rescaling of external forcing fields immediately after read
1466       (removed from external_forcing.F)
1467       -> new: surface_fields_scale.F
1468       -> affects ini_foorcing.F, external_fields_load.F
1469     o Computation of surface tendencies before tendency updates.
1470       -> new: external_forcing_surf.F
1471     o Change of variable names useGMRedi, useKPP, useECCO
1472     o Further changes in dynamics.F, impldiff.F for TAMC
1473     o Tested for experiments 0, 2, 4.
1474       - not yet tested for GMRedi.
1475       - not yet tested for KPP.
1476    
1477    checkpoint30
1478     o Updates for OBCs
1479     o New experiment for test OBCs (internal_wave)
1480     o New output.txt in verification/exp4/results/
1481     o Updates for KPP: calculation of viscosity corrected, new variables
1482       kpp_dumpFreq and kpp_taveFreq
1483     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1484       and entry for T90 in genmake
1485    
1486    checkpoint29
1487     o packaged KPP and GM/Redi
1488    
1489    checkpoint28
1490     o Corrected initialization of hFacMin for difference vertical coordinates
1491     o Modified calculation of partial cell thickness to more robust algorithm
1492     o config_summary.F: replaced write_1D_... by write_0D_...
1493       read_write.F: added subroutines write_0D_...
1494     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1495       included some initialisations required for TAMC.
1496     o routine calc_isoslopes: modified sqrt computation to make it
1497       differentiable for zero argument.
1498     o routines dynamics, impldiff:
1499       included store directives and tape key computations required for TAMC.
1500     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1501    
1502    checkpoint27
1503     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1504       formulation works properly with variable resolution.
1505     o restructured the calling tree between the_model_main() and dynamics()
1506     o split initialise() into initialise_fixed() and initialise_varia()
1507     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1508       in new routine ini_psurf()
1509    
1510    checkpoint26
1511     o moved some #ifdef in optional routines to encompass everything
1512       except the argument declarations. This was using up some memory.
1513     o fixed macros like _ADT to work with both versions of Linux cpp
1514     o cleaned up some unused and uninitialized variables
1515       (helps when debugging with strict compile options)
1516     o split up CPP_EEOPTIONS.h into options and macros
1517       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1518     o patch for 2 processor JAM mode
1519    
1520    checkpoint25
1521     o updates for OBCs and NH
1522     o dramatically reduced memory usage
1523     o added "JAM" routines for use on Artic network
1524     o parameterization of convection by implicit vertical diffusion
1525     o added a diagnostic of convective index
1526     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1527       (this is was partly for OBCs and NH but also in anticipation of
1528        an explicit free-surface option)
1529     o initial state input files for U and V
1530    
1531    checkpoint24
1532     o Removed some spurious "REAL"s
1533     o Updated KPP to latest version from JPL
1534     o Added a COS(latitude) in horizontal viscosity
1535    
1536    checkpoint23
1537     o Added del^4 diffusion for salt and temperature
1538     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1539    
1540    checkpoint22
1541     o Made many small changes: implicit none, format(i5), etc...
1542     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1543    
1544    checkpoint21
1545     o Introduced new I/O package that supports direct-access records (mdsio.F)
1546     o Split-up mid-level I/O routines
1547     o Updated input data for experiments 0,1,2,4 and 5
1548     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1549    
1550    checkpoint20
1551     o Tidied up open-boundaries some more
1552     o Added non-hydrostatic code
1553     o Fixed some input data
1554     o Modified MPI start-up to work in "coupled" context.
1555    
1556    checkpoint19
1557     o Tidied up directory structure for verification experiments.
1558     o Added new code for open boundaries.
1559     o Corrected advective terms near boundaries.
1560     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1561     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1562     o Split default parameters out of ini_parms.F into set_defaults.F.
1563    
1564    checkpoint18
1565     o Further changes for optional code generation with
1566       CPP - ugh!
1567    
1568    checkpoint17
1569     o Beginning to incorporating modularity
1570       for supporting atmos. and ocean configs.
1571     o Small changes for TAMC complinace
1572     o New ultra simple test case. Barotropic box
1573       configuration "exp0".
1574    
1575    checkpoint16
1576     o Minor changes to exchange routines to support
1577       accumulation in reverse mode. Adjoint of an
1578       assignment is an addition.
1579     o Changes to support compilation by TAMC (LR(1)
1580       syntax) and by g77 under Linux ( 72 character
1581       limit ).
1582    
1583    checkpoint15
1584     Rewrote exchange routines to allow
1585     o General tile <-> tile connectivity.
1586     o TAMC reverse mode flag ( is this really needed? )
1587     o Variable width overlap and exchange region widths.
1588     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1589       shmput/shmget, VIA, SYSV shmem and every other cool
1590       communication method.
1591    
1592  checkpoint14  checkpoint14
1593   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
1594   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.

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