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revision 1.2 by cnh, Sat May 30 02:19:49 1998 UTC revision 1.278 by jmc, Sun Apr 18 21:43:24 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52m_post
7    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
8      this does not change any of the results, because myIter=0 in swfrac always
9      lead to jwtype=2 (the default anyway), but the call makes little sense
10      as a default
11    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
12    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
13      atmospheric model (AIM) to use it ; add a "slab ocean" component.
14    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
15    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
16    o extending useSingleCpuIO option to work with new exch2 I/O format
17      - old-style, missing-tile I/O is still accessible by defining CPP
18        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
19    o monitor package can write to NetCDF files and/or STDOUT
20    o fix re-definition bug in MNC_GRID_INIT_ALL()
21    o doc/api_reference added
22      - a framework for building an API Reference Manual using all
23        the "protex" comments embedded in the code
24      - see pkg/generic_advdiff, pkg/mnc for examples
25    o MNC:
26      - make myThid the last argument for all subroutines
27      - new default for the grid files: NO halos
28      - add useMNC and other run-time flags
29      - separate per-file-group handling of the unlimited dimension
30      - early initialization of MNC w/ flags read at the eeboot stage
31        and lookup tables set in initialize_fixed
32      - write all MNC output to a freshly-created directory
33    o thermodynamics sea-ice (thsice) is now tested with testreport.
34    o test exp. advect_cs: use the standard cs32 grid ; update output.
35    o Added functionality to grdchk:
36      pick global i,j,k position (or nearest wet) where to perform check.
37    
38    checkpoint52l_post
39    o new land formulation:
40      a) use ground enthalpy as prognostic variable to ensure exact
41         energy conservation.
42      b) account for water temperature and for latent heat of freezing
43         in all processes (rain, run-off, ground storage)
44      c) compute surface and ground temperature implicitly.
45    o aim_v23 modification for new land model:
46      a) Treat separately land / ocean / sea-ice surface fluxes
47         to allow implicit computation of land & sea-ice surface temp.
48      b) add snow precipitation.
49    checkpoint52l_pre
50    
51    o fix problem (when 1 tile is empty) in min/max monitor.
52    o fix bug in timeAve (u,vZetatave in common block)
53    o no restoring terms under ice for pkg/seaice
54    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
55    o bug fix for pkg/seaice pickups
56    o change MNC call locations and add coordinate attributes
57    o mask vorticity at the corner ; affects global_ocean.cs output
58    o fix ini_curvilinear_grid ; test CS experiments with mpi
59    o aim.5l_cs: modify sea-ice fraction input file ; update output
60    o exf: Adding simple range check routine for exf fields after read
61    
62    checkpoint52k_post
63    o removed top-level directory "diags"
64      - we migrated these functions to pkg/timeave a long time ago
65    o fixed bug introduced in pkg/monitor
66    o accuracy ctrlprec = 32 insuffient for gradient checks using
67      averaged fields (I/O via cost_averages)
68      -> use ctrl.h in active_file*.F to control I/O precision.
69    o paramter list of CALL ADTHE_MAIN_LOOP
70    o added initial do_the_model_io to ecco
71    o set all ...Freq to zero after cost_final
72      taveFreq, dumpFreq, pChkptFreq
73    o MAIN and ECCO differentiability restored
74    
75    checkpoint52j_post
76    o fix nchklev in tamc.h for global_ocean...
77    o Bringing flow and store directives up-to-date
78    o Really weird thing!
79      call do_the_model_io from the_main_loop with parameters
80      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
81      TAF places a faulty re-call of initialise_varia
82      after cost_final call which should not be there!
83    checkpoint52j_pre
84    
85    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
86      error messages
87    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
88    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
89      debug output
90    o modfied mdsio_writefield.F to handle non-global files under exch2
91    o update AIM Cubed-Sphere exp (aim.5l_cs):
92      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
93    o update AIM Equatorial Channel exp:
94      use standard aim_v23 pkg and change the SST fields to be more realistic.
95    o globalFile now works with exch2
96    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
97      mon_vort3.F to make exch2 friendly with >1 tile per cube face
98    o limit timeave output for hi-res integrations
99    
100    checkpoint52i_post
101    o removed CPP_EEOPTIONS.h from verification/*/code
102    o updated the tiling for global_ocean_pressure
103    checkpoint52i_pre
104    
105    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
106      the old pkg/aim).
107    
108    checkpoint52h_pre
109    o shortened offending lines in exch2_send_rx?.template
110    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
111    o genmake2: add build & execute test for NetCDF code
112    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
113      old grid files, moved CPP_EEMACROS.h to pkg/exch2
114    o added useSingleCPUIO flag to monitor.F and mon_out.F
115    o added temporary hack for sea-ice dynamics on the cube:
116      metric terms are ignored and it is assumed that
117      there is no sea-ice on cube faces 1, 2, 4, and 5.
118    
119    checkpoint52f_post
120    o added exch2 cube routines to pkg/exch2
121    o modified hs94.cs-32x32x5 to use it
122    o added new grid files to hs94.cs-32x32x5
123    checkpoint52f_pre
124    
125    checkpoint52e_post
126    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
127      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
128    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
129      to work with implicit vertical advection and AB ;
130    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
131    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
132     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
133    checkpoint52e_pre
134    
135    o fix bug in impldiff when Nr=1 or Nr=2.
136    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
137    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
138    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
139      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
140    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
141    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
142    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
143    
144    checkpoint52d_post
145    o re-tiled many expts to allow comparison in multi-processor mode
146      - updated output accordingly
147      - changed hs94.128x64x5 to use intial T from file rather than use the
148        random number generator
149    o add infrastructure in model routines for fizhi and gridalt packages
150    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
151    o changes to permit hi-res, cubed-sphere, configuration
152      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
153      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
154      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
155        of surface winds for the cube
156      (A verification experiment, based on global_ocean.cs32x15, but with
157       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
158       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
159       complete with example surface forcing files and matlab scripts to look
160       at the output and compare it with that of global_ocean.cs32x15.)
161    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
162       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
163       to conform to the common rule.
164    o check-in the first version of the coupler + interfaces for multi-components
165       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
166       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
167       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
168       - ocean and atmos. share the same horizontal grid (no interpolation).
169       - exchanges between component and coupler is done in forward_step
170    o new verification experiment, cpl_aim+ocn:
171       coupled ocean - AIM atmosphere on cs32 grid.
172    
173    checkpoint52d_pre
174    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
175    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
176    
177    checkpoint52c_post
178    o Fixing OPTIONS files for use of exf:
179      - ALLOW_ECCO not needed
180      - ECCO_CPPOPTIONS.h should not be included from
181        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
182        as has been the case in the past
183      - All cal/exf related options are currently set in
184        single header file. Should remain so until we
185        agree on a consistent new policy.
186    o Removed all CPP options for cal package.
187      cal has no more CPP options.
188    o modified STOREs in GAD_ADVECTION
189    o corrected key comp. for passkey
190    
191    checkpoint52b_post
192    o new version: "thsice" of thermodynamic sea-ice pkg:
193     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
194     - modify fluxes but do not change theta directly;
195     - light cleaning of bulk_force pkg (still needed with thsice).
196     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
197       + output_thsice.txt to test thsice & bulk_force pkgs.
198    o put back grid & coriolis monitor output.
199    checkpoint52b_pre
200    
201    o call "do_the_model_io" at the beginning (=> dump initial state)
202    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
203    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
204      (need info on NUMBER_OF_PTRACERS)
205    o missing PTRACERS headers in some routines
206    o default tamc.h in pkg/autodiff supposed to crash
207      to ensure proper customization
208    
209    checkpoint52a_post
210    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
211      - moved surfaceTendencyTice from pkg/seaice to main code
212      - subroutine FREEZE_SURFACE now limits only surface temperature
213        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
214        => new output.txt for global_ocean.cs32x15 & global_with_exf
215      - keep the old version of FREEZE for backward compatibility;
216        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
217      - corresponding modifs for TAF directives
218    o added surface flux output variables to TIMEAVE_STATVARS
219    o time-averaged output for pkg/ptracers
220    o fix problem with ECCO-related divided adjoint
221      snapshot file was missing some ad-variables,
222      but no warning issued by TAF
223    
224    checkpoint52a_pre
225    o some bug fixes for #undef REAL4_IS_SLOW
226    
227    checkpoint52 = ecco_c52_e35
228    o after testing adjoints of checkpoint51u_post
229    
230    checkpoint51u_post
231    o this is the post-merge tag of the ecco-branch
232      (needs another clean checkout and re-testing)
233    o various natl_box_adjoint configs and results
234      but no input fields
235    o obcs adjoint not yet merged!
236    o adding ECCO global 1x1 and 2x2 degree configs
237    o updated/extended some store directives for seaice
238    o pkg/ecco now containes ecco-specific part of cost function
239    o top level routines the_main_loop, forward_step
240      supersede those in model/src/
241      previous input data.cost now in data.ecco
242      (new namelist ecco_cost_nml)
243    o in ctrl/ cleaned some cross-dependencies and updated CPP options
244    
245    checkpoint51t_post
246    o this is the pre-merge tag of the ecco-branch
247    
248    checkpoint51s_post
249    o cleanup: removed various obsolete #define-s
250    o pkg/grdchk
251      - renamed 'ph-grd 3' to 'grad-res'
252      - merged from ecco-branch
253        (remaining bug fixes for obcs gradient checks)
254      - additional high-precision output for testreport
255        (grep for 'precision_grdchk_result')
256    
257    checkpoint51r_post
258    o cleaned up or removed CPP_OPTIONS.h files
259    o updated results for some of the tests to reflect the new
260      optfiles (-ieee: -O0 instead of -O3)
261    
262    checkpoint51q_post
263    o cd_code:
264      - moved cd_scheme.F -> cd_code_scheme.F
265      - separate read_checkpoint from cd_code_ini_vars.F
266      - separated cd_code part from write_checkpoint
267      - updated AD_SOURCE, generated .flow
268      - added CD_CODE_VARS.h to the_main_loop
269      - Moving cd_code specific store dir.s to pkg/cd_code
270    o ctrl package totally restructured
271      - pack/unpack now optional and decoupled from
272        xx_/adxx_ I/O
273      - ctrl_pack/unpack cleaned
274        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
275      - confined inclusion of AD_CONFIG.h to where necessary.
276    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
277    
278    checkpoint51p_post
279    o create initial cd_code package
280      - WARNING: the initialization of fields within packages
281        is broken because INI_FIELDS (where READ_CHECKPOINT is
282        called) is called *before* PACKAGES_INIT_VARIABLES.
283        This seems to be backwards since
284        1) its important to initially zero the entire field including
285           the "halo" region
286        2) zeroing needs to be done *before* reading pickup info
287           and the pickup call might or might not happen in any
288           particular run
289      - this needs an overhaul for R2
290    o cleanup verification/*/code/GMREDI_OPTIONS.h
291    o cleanup testreport
292    
293    checkpoint51o_post
294    o bringing AD-related verif's up to date with genmake2
295      - carbon/
296      - global_ocean.90x40x15/
297      - hs.94.1x64x5/
298      - (front_relax/ )
299    o (more) consistent directory structure for AD-related verif.'s
300    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
301    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
302    o bug fix in find_alpha.F for MDJWF:
303      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
304        change rho -> rho-rhoConst
305      - replace call find_rho to find_rhonum
306    o initialisation of rFlx extended to full array (required by TAF)
307      and shifted to thermodynamics
308    o removed PTRACERS.h in ptracers routine
309    o added surfacetendencyPtr to S/R parameter list pracers_forcing
310    o Correcting initialisations for fVerU, fVerV.
311    o helping TAF to recognize dependency on kUp for
312      fVerU, fVerV
313    o Replacing delZ by delR in pkg/ctrl/
314    checkpoint51o_pre
315    
316    o undid all of cp51 pending some cleanups and discussion
317    o added the [#include "AD_CONFIG.h"] statement to all files that need
318       it for adjoint/tl #defines
319     o re-worked the build logic in genmake2 to support AD_CONFIG.h
320     o removed tools/genmake since it no longer works
321    
322    checkpoint51n_post
323    o modifications to make FREEZE flux visible to pkg/kpp
324      - moved surfaceTendencyTice from pkg/seaice to main code
325      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
326      - subroutine FREEZE now limits only surface temperature
327        (this means new output.txt for global_ocean.90x40x15,
328         global_ocean.cs32x15, and global_with_exf)
329    o added surface flux output variables to TIMEAVE_STATVARS
330    
331    checkpoint51n_pre
332    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
333    o added [#include "AD_CONFIG.h"] to all files that use the following
334      defines:
335      - ALLOW_ADJOINT_RUN
336      - ALLOW_TANGENTLINEAR_RUN
337      - ALLOW_ECCO_OPTIMIZATION
338    
339    checkpoint51m_post
340    o incorporating changes to get TAMC/TAF working in genmake2
341      - added new TAMC/TAF targets to the Makefile
342      - various cleanups related to package handling
343      - these changes should have no impact on the forward model
344    
345    checkpoint51l_post
346    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
347     - faster algorithm for cal_addtime.F
348     - higher precision arithmetic, where needed
349     - pkg/exf *startdate variables changed from calendar date to
350       model integration time
351    
352    checkpoint51l_pre
353    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
354    o enable to apply restoring on S & T only in a latitude band.
355    o update output (external_forcing_surf modif. change truncation errors)
356       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
357    
358    checkpoint51k_post
359    o change default to: useNHMTerms=.FALSE.
360     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
361       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
362     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
363        exp1, ideal_2D_oce
364     - change data file of oceanic exp (leave the results unchanged for now)
365       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
366    o set gravitySign automatically according to the vertical coordinate used
367      (and change sign: back to "logical" value: +1 when R increases downward)
368    o added an include barrier to the default CPP_OPTIONS.h and
369      removed the #include "PACKAGES_CONFIG.h" from it
370    o fix a bug in mom_fluxform (from chk51j_post)
371    
372    checkpoint51j_post
373    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
374    o adjusted some flow directives (dynamics, thermodynamics)
375    o added cubed-sphere case to test cost function
376    o heckpoint_lev?_directives.h now include
377      pkg-specific directives, whenever those are enabled.
378    o Moving pkg-specific flow directives to corresponding pkg
379      Moving pkg-specific differentiation list to corresponding pkg
380      Moving pkg-specific checkpoint-lev storing to corresponding pkg
381      ---> conventions are
382           - pkg_ad.flow
383           - pkg_ad_diff.list
384           - pkg_ad_check_lev?_dir.h
385    
386    checkpoint51i_post
387    o merge of the branch-genmake2
388      - knowingly breaks the older genmake
389      - automatic generation of all ALLOW_${PKG_NAME} defines
390      - new testreport supersedes older testscript
391    o large number of package inclusion and header cleanups
392    checkpoint51i_pre
393    
394    o new output for adjoin of global ocean vector invariant
395    o fix for checkpoint of thermodynamic seaice and bulk_force
396    o Steph gchem various cleanups
397    
398    checkpoint 51h_pre
399    o fixed some single quotes
400    o modify gchem pkg to be more versatile
401    o modifications to clean up dic pkg
402    o add pkg/cfc
403    
404    checkpoint51g_post
405    o provide links for ARPACK and ADM*TLM
406    o start removing verification/vero/
407    o update AD-related stuff
408      (in particular some IF-statements in model/src/ routines)
409    o adding to verification/global_ocean.90x40x15/ adjoint of
410      vector invariant setup
411    
412    checkpoint51f_post
413    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
414    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
415      of tracer Green's fucntions for ocean inversion project.
416    
417    checkpoint51f_pre
418    o Added on-the-fly spatial interpolation capability
419        "USE_EXF_INTERPOLATION" to pkg/exf.
420      - This is a temporary Cartesian-grid hack until
421        the super-duper ESMF coupler becomes available.
422      - See verification/global_with_exf/README for usage example.
423      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
424        flags and modified pkg/seaice accordingly.
425    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
426        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
427        non-local transport term.
428    
429    checkpoint51e_post
430    o pkg/mom_vecinv:
431      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
432      - add time-ave diagnostic of vorticity advection.
433    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
434    o atmospheric geopotential: - include water vapor effect;
435                                - use p^kappa in p* scaling.
436    o land pkg: read initial state from files.
437    o AIM : add stratospheric drag in the upper level
438    
439    checkpoint51d_post
440    o change function ILNBLNK (=> last non-blank char.) to return zero
441      (instead of the string length) when the string. char is empty
442    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
443    o modif's to restore TAMC compatibility
444      - avoid "_d" constructs in PARAMETER declarations
445      - avoid interrupting lines by comment lines
446    o Use cluster local disks for purely local I/O
447      vs. globally visible disks needed for ctrl stuff
448      (merged from ecco-branch)
449      - new active_file_loc... and mdsio_..._loc routines
450      - affected packages: autodiff, ctrl, grdchk, mdsio
451    
452    checkpoint51c_post
453    o introducing integer flag debugLevel
454      - debLevZero: suppress all output
455      - debLevA: standard
456      - debLevB: equivalent to current debugMode=.TRUE.
457    o introducing pathname variable mdsioLocalDir for mdsio
458      that can be specified at runtime
459      (relevant for cluster I/O to local disk)
460    `
461    >>>checkpoint51b_post
462    adjoint of ptracers
463    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
464    o extended state in checkpoint_lev?, etc.
465    o alternative ctrl/cost with tr1 or ptracer
466    o new comlev1_bibj_ptracers
467    o new ptracers.flow
468    o made ptracers_forcing same as external_forcing_s
469    o added verification for adjoint with ptracers
470      - adm. grdchk fail so far
471      - tlm. grdchk OK
472      - checked tapelev/comlev recomputations: OK
473    <<<checkpoint51b_pre
474    
475    checkpoint51a_post
476    o added code for biogeochemistry package
477      - new pkgs: dic, gchem
478      - new subroutine in ptracers
479    o modify code for biogeo packages
480      - in model/src and pkg/ptracers
481    
482    checkpoint51
483    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
484      - autodiff, ctrl, exf, grdchk, seaice
485      kept separate packages
486      - cost, ecco, obcs
487    o updating verification/internal_wave, verification/lab_sea
488      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
489    
490    checkpoint50i_post
491    o Preparing next differentiable checkpoint and sync
492      of MAIN vs. ecco-branch
493      - 1st step: this one is differentiable
494      - 2nd step: next(! not this) checkpoint will have updated packages
495                  from ecco-branch)
496    
497    checkpoint50h_post
498    o new package "land": provide surface BC for AIM.
499    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
500    o AIM: use true log-P extrapolation for near surface temp (= as in
501        F.Molteni paper) ; update aim.5l_cs output.
502    o New variable in PARM03 for more flexible pickups
503    o somewhat cleaned package initialisation sequence for
504      ctrl/ cost/ ecco/ in packages_... routines
505    
506    checkpoint50g_post
507    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
508      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
509      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
510        made the default because of faster convergence than ADI
511    
512    checkpoint50f_post
513    o exf totally restructured
514      - replaced all exf_set_ routines by one generic exf_set_gen.F
515        and made sure it's still differentiable
516      - split exf_getffields.F into new exf_bulkformulae.F
517      - exf_inscal_/exf_outscal_ suffixes consistent with field names
518      - updated adjoint/makefile and relevant verif. accordingly
519    
520    checkpoint50f_pre
521     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
522          + change Evap over land. (update aim.5l_cs output)
523     o added missing .cvsignores and made uniform across expts
524     o changed configuration of tidal_basin_2d expt
525     o added pkg/debug functions for tracing code in fatal crashes
526     o tidied pkg/monitor to use MONITOR_OPTIONS.h
527     o new fn in pkg/monitor to stop model if solution grows too big
528     o removed lots of single quotes from comments
529    
530    checkpoint50e_post
531    o make KPP work with PTRACERS
532     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
533       nearly a copy of kpp_transport_s
534     - there is no analogue to SurfaceTendencyS, so I have to use
535       gPtr(of the surface layer) instead
536    o add a new platform SunFire+mpi (SunFire 15000) to genmake
537    checkpoint50e_pre
538    
539    checkpoint50d_post
540    o change kpp output from multiple-record state files to single-record state
541      files analogous to write_state.F
542    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
543      analogous to the cg2d-related output.
544    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
545      so that writing to internal file fn (with length 512) fails.
546    checkpoint50d_pre
547    
548    checkpoint50c_post
549    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
550    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
551    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
552    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
553    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
554    
555    checkpoint50c_pre
556    Merging from release1_p13:
557    o bug fix for pkg/seaice dynamic solver
558    o Added SEAICE_initialHEFF to pkg/seaice
559    
560    checkpoint50b_post
561    o store u*,v* in gU,V instead of in guNm1,gvNm1
562    o in order to put the momForcing out of the Adams-Bashforth:
563      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
564      to timestep.F
565    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
566    o re-generate output for highly sensitive test-exp:
567       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
568    
569    checkpoint50b_pre
570    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
571    o corrected CPP option mismatch in exf_Bulk... functions for case
572      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
573    
574    checkpoint50a_post
575    o Bug fix for merging between c50 and KPP.
576      ikey was passed from thermodynamics to kpp_calc via
577      common block rather than being recomputed in kpp_calc,
578      in contradiction with new key itdkey.
579      New key ikppkey created, and tamc.h headers updated.
580    
581    checkpoint50
582    - 2nd step of merge with ecco-branch:
583      merge changes in ecco-branch back into main trunk
584    - bug fix in find_alpha
585    - more storing in gmredi_calc_tensor.F, kpp_routines.F
586    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
587    - merged some sliced AD support routines
588    
589    checkpoint49
590    merged from ecco-branch:
591    o exf:
592      - Enable initialisation of forcing fields to constant
593        (runtime) values.
594      - in exf_getffields.F
595        Reduce i-/j-loop to interior domain, discarding overlaps.
596        That also fixes wrong TAF-key computations for key_1, key_2
597        with bulf formulae.
598      - exf_init.F modify #ifdef for exf_init_evap
599      - exf_getffieldrec.F, ctrl_getrec.F
600        The following INT-usages are not safe:
601          fldsecs  = int(fldsecs/fldperiod)*fldperiod
602          fldcount = int(fldsecs/fldperiod) + 1
603        and were modified.
604    o autodiff: checkpoint_lev...
605      - updated storing for bulk formulae (some arrays were missing)
606      - added state for seaice package
607      - synchronized with main branch
608    o DIVA:
609      Modif.s in
610      - the_main_loop.F
611      - the_model_main.F
612      and added cost_final_restore.F cost_final_store.F
613      o With these changes, it is possible to fully separate
614        the first forward run to compute the cost function (mdthe_main_loop)
615        and adjoint runs over individual DIVA intervals (adthe_main_loop)
616        into separate model executions.
617        This enables better tuning of DIVA to given queue sizes.
618      o Loss of cost function value in consecutive DIVA runs is
619        fixed by storing to 'costfinal' file.
620      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
621        beginning/end of adjoint integration is accounted for.
622      The current changes apply to TAF-1.4.26.
623      TAF has one remaining bug, requiring one manual change
624      (see MITgcm manual).
625    o cal: synchronized between MAIN and ecco-branch
626    
627    checkpoint48i_post
628    o Changes to restore differentiability of code w.r.t. previous tag
629      (mostly adding new routines to make list and replacing
630      pressure by totPhiHyd).
631    o Updated and merged grdchk package
632      - has both ADM and TLM checks
633      - works for single- and multi-proc.
634      - output cleaned
635      - worked successfully for parallel DIVA
636    o genmake:
637      - Adding -platform=SP4
638      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
639    o Modif. for DIVA:
640      ctrl_unpack should not be called in intermediate DIVA interval.
641      (similar thing would apply for active files such as
642      tbar, sbar, psbar, which should not be reinitialised;
643      only relevant for ecco-branch)
644    
645    checkpoint48h_post
646    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
647    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
648    o Added SEAICE_initialHEFF to pkg/seaice
649    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
650    
651    checkpoint48g_post
652    --- EOS:
653    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
654      store total Potential in totPhyHyd for diagnostics & EOS.
655    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
656    --- Pressure/geopotential gradient:
657    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
658    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
659      ( changes results of global_ocean_pressure )
660    o NLFS + z-coord.: add eta*Rho' contribution.
661    o accurate phiHyd when using interface-W at the middle between 2 centers
662     ( changes results of ideal_2D_oce )
663    o includes r* 2nd term in potential gradient.
664    
665    checkpoint48f_post
666    Merging from release1_p12:
667    o Modifications for using pkg/exf with pkg/seaice
668      - improved description of the various forcing configurations
669      - added basic radiation bulk formulae to pkg/exf
670      - units/sign fix for evap computation in exf_getffields.F
671      - updated verification/global_with_exf/results/output.txt
672    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
673      (SBO) core products, including oceanic mass, center-of-mass,
674      angular, and bottom pressure (see pkg/sbo/README.sbo).
675    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
676      to avoid negative values in shallow regions.
677      - updated verification/natl_box/results/output.txt
678      - updated verification/lab_sea/results/output.txt
679    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
680    o Added useSingleCpuIO option (see PARAMS.h).
681    o Updated useSingleCpuIO option in mdsio_writefield.F to
682      work with multi-field files, e.g., for single-file pickup.
683    o pkg/seaice:
684      - bug fix in growth.F: QNET for no shortwave case
685      - added HeffFile for specifying initial sea-ice thickness
686      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
687    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
688      kpp_transport_t.F, forward_step.F, and the_main_loop.F
689    o pkg/seaice:
690      - adjoint-friendly modifications
691      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
692    
693    checkpoint48e_post
694    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
695    o dynamics: change definition of computational domain & adapt mom_fluxform
696      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
697    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
698        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
699        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
700        global_ocean.90x40x15 global_with_exf global_ocean_pressure
701        inverted_barometer solid-body.cs-32x32x1
702      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
703    
704    checkpoint48d_post
705    o in preparation for r*:
706     a) use pre-computed gradient of hydrostatic potential:
707        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
708     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
709        => affects results of glob_oce_pressure (different truncation error)  
710      update output.txt of ideal_2D_oce & global_ocean_pressure
711    
712    checkpoint48d_pre
713    o in preparation for r*:
714      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
715      pass the 2 comp. of the grad. as arguments to momentum S/R.
716      but for the moment, only used if it does not change the results.
717    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
718    
719    checkpoint48c_post
720    Modifications in treatment of initial flux forcing controls
721    to avoid extra storing of flux fields.
722    
723    checkpoint48c_pre
724    o Added tidal_basin_2d experiment (currently 1D!)
725    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
726    
727    checkpoint48b_post
728    o r* coordinate added in #ifdef NONLIN_FRSURF block.
729     (modification to pressure gradient not yet implemented)
730    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
731      (for U & V) that are used for vertical advection of momentum.
732    
733    checkpoint48a_post
734    o In preparation for r*, use temp. array to compute vertical transport
735       in flux-form momentum pkg. => change results of few test-exp.
736      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
737                        lab_sea, natl_box & plume_on_slope
738    
739    checkpoint48
740    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
741    
742    checkpoint47j_post
743    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
744    o moved adexch from forward_step to addummy_in_stepping
745    o added exch in ctrl_map_...
746    o aveFreq.=0. at end of cost_final to avoid overwrite in
747      reverse checkpointing loop
748    o Yet more changes in gmredi:
749      * adgmredi_calc_tensor
750        avoiding all recomputation of gmredi_slope_limit
751      * adgmredi_x/y/rtransport
752        added flag for excessive storing to avoid recomp. of
753        u/v/rtans, dTdx/y/z
754        -> this is not really necessary and very memory-consuming
755      * adgmredi_slope_psi:
756        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
757      * gmredi_slope_limit
758        re-activated full calculation of taperfct for case 'ac02'
759    o updating verification/ adjoints of carbon, global_ocean.90x40x15
760    
761    checkpoint47i_post
762    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
763    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
764      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
765    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
766    o gmredi: fix few bugs.
767    
768    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
769    This will be a good checkpoint to plug into the ecco-branch.
770    o few modif.'s to get latest version adjointed
771      (mainly kick out code in ini_linear_phisurf)
772    o modif's to run adjoint with exactConserv
773    o case GM_BOLUS_ADVEC should be cleaned
774      S/R gmredi_slope_psi should be cleaned
775    o verification/carbon now has exactConserv=.TRUE.
776    
777    checkpoint47g_post
778    o time-average AIM output: becomes independent from statvars time-average
779      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
780    o After TAF bug fix:
781      Tested adjoint of gmredi package.
782      Tests were done with checkpoint47 rather than with latest
783      checkpoint47f_post since the latter is broken for the adjoint
784      verification/carbon/ contains both ADM and TLM gradient checks.
785    Here they are, before they get changed/lost/stolen.
786    Mostly modif.'s to fix numerical sensitivities.
787    Gradient checks OK for
788    - GM_taper_scheme:
789      * clipping
790      * ac02
791      * linear
792      * glw91
793      * dm95
794      * ldd97
795    - GMREDI_OPTIONS:
796      * GM_VISBECK_VARIABLE_K
797      * GM_NON_UNITY_DIAGONAL
798      * GM_EXTRA_DIAGONAL
799      * GM_BOLUS_ADVEC
800    in conjunction with data.gmredi parameters to be checked in
801    in a few minutes under verification/carbon/code/
802    
803    checkpoint47f_post
804    Merging from release1_p10:
805    o modifications for using pkg/exf with pkg/seaice
806      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
807        and SEAICE_EXTERNAL_FLUXES
808      - pkg/exf CPP options EXF_READ_EVAP and
809        EXF_NO_BULK_COMPUTATIONS
810      - usage examples are Experiments 8 and 9 in
811        verification/lab_sea/README
812      - verification/lab_sea default experiment now uses
813        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
814    
815    checkpoint47e_post
816    o created a tag prior to creating a branch
817    
818    checkpoint47d_post
819    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
820      at the bottom boundary had an erroneous half slip boundary condition
821    o added bottom drag and no slip boundary condition capabilities to
822      oceanic pressure coordinates code
823    o added new verification experiment global_ocean_pressure, this experiment is
824      also described in the tutorial section of the manual
825    checkpoint47d_pre
826    
827    checkpoint47c_post
828    o Added a verification experiment for a global cubed-sphere ocean run
829      -  verification/global_ocean.cubed32x32x30
830      -  uses pkg/therm_seaice and pkg/bulk_forcing
831    
832    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
833    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
834      when using P-coordinate; only implemented for atmospheric config.
835    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
836      NOTES: requires option NONLIN_FRSURF to be "#define".
837    o update advect_xz/results/output.txt (left from checkpoint44g_post)
838    
839    checkpoint47b_post
840    Merging from release1_p9:
841    o pkg/seaice
842      - removed GOTO's and added taf directives
843      - double precision constants to reduce the g77 (Linux)
844        to F77 (SGI) differences reported in release1_p8
845    o tools/genmake
846      - added SGI options
847    o verification/testscript
848      - updated to that of checkpoint47a_post
849    o verification/global_ocean.90x40x15/input/eedata
850      - modified for SGI f77 compatibility
851    o verification/lab_sea
852      - added description of sea-ice model
853      - added missing matlab routines
854      - added test of thermodynamics parallelization
855    
856    checkpoint47a_post
857    o new pkg: aim_v23
858     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
859       for now, keep the same surface forcing as before.
860     - Part-Cell implemented into AIM; check that Heat & Water are conserved
861     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
862     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
863    o add diagnostic of surface correction term in monitor output
864    
865    o bulk_force and therm_seaice
866    - Two packages:  bulk_force (Bulk forcing)
867      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
868    - Earlier integration from Stephaine Dutkiewicz
869      and Patrick Heimbach.
870    - Two ifdef statements for compile time,
871       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
872    
873    checkpoint47
874    differentiable version of checkpoint46n_post
875    o bug fix in quasihydrostaticterms
876    o * "clean" adjoint code (in terms of extensive recomputations)
877        can now be obtained for all GMREDI options (i.e. for
878        - GM_VISBECK_VARIABLE_K
879        - GM_NON_UNITY_DIAGONAL
880        - GM_EXTRA_DIAGONAL
881        - GM_BOLUS_ADVEC )
882      * However, wrong gradient check problem remains unsolved.
883      * New CPP options have been introduced for different
884        tapering schemes
885    o external_fields_load now part of differentiation list
886    o pressure needs multiple storing;
887      would be nice to have store_pressure at beginning or
888      end of forward_step, e.g. by having phiHyd global (5-dim.)
889      (NB: pressure is needed for certain cases in find_rho,
890      which is also invoked through convective_adjustment).
891    o recomputations in find_rho for cases
892     'JMD95'/'UNESCO' or 'MDJWF' are OK.
893    o #define ATMOSPHERIC_LOADING should be differentiable
894    o ini_forcing shifted to begining of initialise_varia
895    o Incorporating QNVS line search routines into MITgcm
896      (this is separate code, and therefore not under pkg)
897      lsopt/, optim/
898    o Updated verification/carbon/
899      - #define GM_VISBECK_VARIABLE_K
900      - GM_taper_scheme    = 'ldd97'    
901    
902    checkpoint46n_post
903    Merging from release1_p8:
904    o verification/natl_box:
905      updating new external_fields_load routine
906    o New package: pkg/seaice
907      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
908      The sea-ice code is based on Hibler (1979-1980).
909      Two sea-ice dynamic solvers, ADI and LSR, are included.
910      In addition to computing prognostic sea-ice variables and diagnosing
911      the forcing/external data fields that drive the ocean model,
912      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
913      The implied surface heat flux is then stored in variable
914      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
915      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
916      non-local transport term.  Because this call precedes model
917      thermodynamics, temperature under sea-ice may not be "exactly" at
918      the freezing point by the time theta is dumped or time-averaged.
919      N.B.: fairly large differences in accuracy occur across
920            different platforms/compilers; comparison between
921            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
922            generated output gives:
923       T           S           U           V
924      C D M    c        m  s        m  s        m  s        m  s
925      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
926      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
927      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
928    
929      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
930    o GAD:
931      - generated new common blocks to account for call of
932        same gad routines with differing traceridentities
933        (needed to modify tracerIdentity indices in GAD.h)
934      - generated separate common blocks for case useCubedSphereExchange
935        (Department of Futurology)
936      - parameter lists to gmredi_?transport: added tracerIdentity
937      - added new key indices to tamc.h
938    o external_fields_load:
939      - added this routine to TAF list
940      - needed to make some common blocks global and additional storing
941        along the same lines as exf package (checkpoint_lev?_directives.h)
942    o exf:
943      updated external forcing package
944      - bug fixes carried over from ecco-branch
945        (missing OBCS_OPTIONS.h in two routines)
946      - enable easy to use "no forcing".
947      - added exf I/O for atmospheric loading
948      - added exf I/O for runoff data
949      - transfered scaling between exf <-> MITgcm to exf namelist
950    o Adding new verification experiment global_with_exf.
951      This verification experiment is almost identical to the
952      global_ocean.90x40x15 experiment, except that it uses
953      the exf (and cal) package instead of the
954      external_fields_load routine (cf README file).
955    
956    checkpoint46m_post
957    o modified testscript to return -- when there are no lines of "%MON" output
958    o added new flag "quasiHydrostatic" for QH mode
959      and new routine quasihydrostaticterms()
960    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
961      New routine: mom_u_coriolis_nh()
962    o fixed sign of non-hydrostatic metric terms in u and v equations.
963      Depend on correct sign of gravitySign.
964    o added work.pc* to .cvsignore in aim directories using ifc
965    o introduced flag for controllin non-hydrostatic metric terms
966    o removed gravitySign from PARM04
967    o switched to g77/ifc from pgf77 in aim experiments
968    
969    checkpoint46l_post
970    o made convective adjustment work with pressure coordinates:
971     - changed the direction of k-loop in convective_adjustment.F for the
972       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
973     - adjusted the reference pressure k-index in convective_adjustment.F
974     - adjusted the convection condition in convect.F (in analogy to
975       calc_ivdc.F)
976     - convective_adjustment no longer computes anything on the halos
977     - removed the warnings about negative salinity from find_rho.F and
978       find_alpha.F; instead the new routine look_for_neg_salinity, called
979       at the beginning of find_rho, find_alpha, and find_beta, does a
980       check of the entire slice, if CPP-option
981       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
982    checkpoint46l_pre
983    
984    checkpoint46k_post
985    o fixed the verification/global_ocean.90x40x15 experiment:
986     - new bathymetry (the world according to A., JMC, and M.)
987     - new initial fields and forcing fields (*.bin files)
988     - new POLY3.COEFFS (for the next release one should switch to a full
989       equation of state: JMD95P or MDJWF)
990     - fixed several errors and redundancies in the data file
991     - experiment uses looped cells
992     - added matlab directory with diagnostic scripts for plotting of output
993    
994    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
995     - read AIM physics parameters from a file (data.aimphys)
996     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
997    
998    checkpoint46j_post
999    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1000    o move wVel computation at the end of the time step, in S/R integr_continuity
1001    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1002    o update timeave pkg for wVel diagnostic.
1003    checkpoint46j_pre
1004    
1005    checkpoint46i_post
1006    o Clean up AIM package (and keep the results unchanged):
1007      include CPP_OPTION and use IMPLICT NONE in all routines ;
1008      declare all the variables _RL ; use _d 0 for all numerical constants.
1009      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1010    
1011    checkpoint46h_post
1012    o cleaned up the use of rhoNil and rhoConst.
1013      - rhoNil should only appear in the LINEAR equation of state, everywhere
1014        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1015        and the dynamical equations are all divided by rhoConst
1016    o introduced new parameter rhoConstFresh, a reference density of fresh
1017      water, to remove the fresh water flux's dependence on rhoNil. The default
1018      value is 999.8 kg/m^3
1019    o cleanup up external_forcing.F and external_forcing_surf.F
1020      - can now be used by both OCEANIC and OCEANICP
1021    checkpoint46h_pre
1022    
1023     Added code to convert surface volume flux (fresh water) into
1024     a mass flux when using P coordinates in the ocean (OCEANICP).
1025     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1026    
1027    checkpoint46g_post
1028    o Include a new diagnostic variable phiHydLow for the ocean model
1029      - in z-coordinates, it is the bottom pressure anomaly
1030      - in p-coordinates, it is the sea surface elevation
1031      - in both cases, these variable have global drift, reflecting the mass
1032        drift in z-coordinates and the volume drift in p-coordinates
1033      - included time averaging for phiHydLow, be aware of the drift!
1034    o depth-dependent computation of Bo_surf for pressure coordinates
1035      in the ocean (buoyancyRelation='OCEANICP')
1036      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1037        Theta, Salinity, and Pressure in the parameter list. This routine is
1038        presently contained in find_rho.F. This routine does not give the
1039        correct density for 'POLY3', which would be a z-dependent reference
1040        density.
1041    o cleaned up find_rho
1042      - removed obsolete 'eqn' from the parameter list.
1043    o added two new verification experiments: gop and goz
1044      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1045    checkpoint46g_pre
1046    
1047    checkpoint46f_post
1048    o Enable tangent linear (forward mode) gradient checks:
1049      - extended active file handling to g_... files
1050      - added TANGENT_SIMULATION to theSimulationMode
1051      - extended grdchk package accordingly
1052    o added tangent linear setup in verification/carbon/code_ftl
1053    o added adjoint setup in verification/front_relax/code_ad
1054    
1055    checkpoint46e_post
1056    o Added new equation of state -> MDJWF
1057      - EOS of McDougall et al., 2002, JAOT, submitted
1058      - caveat: the equation of state is only valid for a smaller (more
1059        realistic?) range of values than JMD95P/Z and UNESCO
1060      - added masks to the calculation of pressure in store_pressure
1061      - added more check values for density in check_eos (ini_eos.F), some of
1062        the old check values are out of the range of the MDJWF-eos, so don't
1063        expect perfect matches for those
1064    checkpoint46e_pre
1065    
1066    checkpoint46d_post
1067    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1068      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1069      case of pressure coordinates. eosType='JMD95Z' in
1070      combination with buoyancyRelation='OCEANICP' now causes an error.
1071    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1072      in find_alpha/beta.
1073    checkpoint46d_pre
1074    
1075    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1076      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1077    
1078    checkpoint46c_post
1079    o Changes necessary for ocean in p-coordinates
1080     -  Added new buoyancy relation = 'OCEANICP'
1081     -  Added new parameters = gravitySign (this used to be contained inside
1082        the factor dRdZ which I added when we first switched to R coordinates).
1083     X GM/Redi is not compatible (yet)
1084     X bottom drag and no-slip need to be debugged.
1085    checkpoint46c_pre
1086    
1087    checkpoint46b_post
1088    o Added new equation of state -> JMD95Z and JMD95P
1089      - EOS of Jackett and McDougall, 1995, JAOT
1090      - moved all EOS parameters into EOS.h
1091      - new routines ini_eos.F, store_pressure.F
1092    o Added UNESCO EOS, but not recommended because it requires
1093      in-situ temperature (see JMD95)
1094    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1095      unesco.f to be used with POLY3
1096    checkpoint46b_pre
1097    
1098    checkpoint46a_post
1099    o Added (atmospheric) pressure loading
1100      - new field in FFIELDS.h, etc...
1101      - new cpp flag ATMOSPHERIC_LOADING
1102    o Changed hFacC to _hFacC in calc_phi_hyd.F
1103    o Added SHORTWAVE_HEATING to some files for consistency
1104    checkpoint46a_pre
1105    
1106    checkpoint46
1107    further merges from release1_p5
1108    o new ctrl package
1109      - adopted from ECCO environment to enable optimization
1110      - added Eliassen Palm fluxes to controls
1111    o added Eliassen Palm flux controls to gradient check package
1112    o cost package
1113      - Compatible with new ctrl package
1114      - added Eliassen Palm cost hooks
1115      - modif's of existing cost functions
1116    o Adjoint-related bug fixes in kpp:
1117      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1118      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1119    o autodiff package
1120      - flow directives:
1121        + new for S/R do_the_model_io
1122        + enhanced for S/R checkpoint
1123        + new gmredi.flow
1124      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1125        disable adcommon.h/g_common.h by default.
1126      - fixed problem for adjoint of global_max
1127    o modified verification/carbon/
1128    o New setup for adjoint of global_ocean
1129    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1130    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1131    o incorporated hooks for sponge layer code (external_forcing.F)
1132    
1133    checkpoint45d_post
1134    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1135    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1136      (affects plume_on_slope "cg2d" output)
1137    o add new parameter deltaTfreesurf for free-surface time stepping
1138    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1139    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1140    o change phiMin in exp1 (to agree with documentation)
1141    o add new flags:
1142     - T,S forcing inside/outside Adams-Bashforth
1143     - turn off temp,salt advection and/or forcing
1144     - for each tracer, define internal flag for multiDimAdvection & A-B
1145    o monitor: change definition of KE to check conservation of Energy
1146    
1147    checkpoint45c_post
1148    o Removed f90 comments ("!")
1149    o Modified initialisations to enable exf package for MITgcm
1150      (without invoking ECCO_PACKAGE).
1151    o modifications to gradient check package (Martin Losch)
1152      - enable centered differences
1153      - modified format of standard output
1154    
1155    checkpoint45b_post
1156    o cleaned exchange calls in cg2d
1157    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1158    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1159      to configure barotropic setup (Martin Losch)
1160    o moved some initialisations within bi,bj loop in dynamics
1161      (TAF flow dependency)
1162    o in initialise_varia, moved call packages_init_variables
1163      before convective_adjustment_init
1164      (corresponding adjustment of TAF tape initialisation).
1165    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1166    
1167    checkpoint45a_post
1168    o compute Rho over the whole domain (extend iMin,jMin indices)
1169    o specific exchange for X-slice domain (case Ny=1)
1170    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1171    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1172    
1173    checkpoint44h_post = checkpoint45
1174    o Fix to restore differentiability:
1175      place at which packages_init_variables is called in
1176      initialise_varia is crucial for reverse control flow.
1177    o modifications in GMRedi to enable stable adjoint
1178      (corresponding modif's in thermodynamics, dynamics)
1179    o added missing hook for sponge layer code in external_forcing
1180    o modified test cost functions
1181    o storing in gad_advection (plus removal of write(0,*)!
1182    o missing headers TR1.h added in convective_adjustment routines
1183    o errorMessageUnit set non-equal zero in eeboot
1184      (conflict on some platforms, e.g. IBM SP3)
1185    o modified carbon verif.
1186    
1187    checkpoint44h_pre
1188    o vertical grid option: allow to put the Interface at the middle between
1189      2 cell-centers ; replace delZ in pkg/kpp by drF.
1190    o GM Advective form: Tracers are advected using the residual transport (=
1191      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1192    
1193    checkpoint44g_post
1194    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1195      results) ; ifdef missing in thermodynamics.F
1196    
1197    checkpoint44f_pre,checkpoint44f_post
1198    o added PTRACERS package
1199      This allows an arbitrary number of passive tracers to be integrated
1200      forward simultaneously with the dynamicaly model.
1201      + Implemented so far:
1202        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1203        - I/O and checkpointing
1204        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1205      + Not implemented so far:
1206        - KPP
1207        - OBCS
1208      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1209        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1210        line in data.pkg.
1211      + This package is disabled by default since it increases storage.
1212    
1213    
1214    o testscript: added -cleanup option
1215    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1216                 b) enable to filter 2D fields.
1217    
1218    checkpoint44e_pre,post
1219    o re-wrote convective adjustment to use pre-calculated weights
1220      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1221      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1222      Original calls to convect() still in place.
1223    
1224    chkpt44d_pre,post
1225    o added missing EXCLUDE_MONITOR flags
1226    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1227      (incompatible typ in MIN/MAX expressions caused problems
1228      on IBM SP3)
1229    o in genmake added variable MAKEDEPEND
1230      plus resetting for case SunOS
1231    o added timer_stats.c routine for IBM SP3
1232    o removed variables in dynamics
1233    !!! I forgot to create tag chkpt44d_pre !!!
1234    !!! But chkpt44d_pre = chkpt44c_post    !!!
1235    
1236    o real fresh water flux implemented with non-linear free-surface.
1237    
1238    chkpt44c_pre,post
1239    o few fix (mask in shap_s2, EmPmR in external_field_load,
1240      USE_NATURAL_BCS in solve_for_P);
1241    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1242    
1243    checkpoint44b_pre/_post
1244    o merge of relevant stuff from the ecco-branch:
1245      - genmake: removed $S64 overwrite for case SunOS
1246      - pkg/exf: update and corrections for field swapping and obcs
1247      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1248                  harmonized between ECCO and MITgcm
1249      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1250                      updated checkpointing_lev... lists for obcs
1251      - model/src: minor changes in forward_step, plot_field
1252                   added directive for divided adjoint in the_main_loop
1253      - pkg/mdsio: added mdsio_gl_slice
1254    
1255    o check parameters & config (chkpt44a_pre,post)
1256    o OBC and NonLin_FrSurf.
1257    
1258    checkpoint44
1259    o fix bug in mom_vi_del2uv
1260    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1261    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1262    o update AIM experiments (NCEP input files)
1263    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1264    o added some stuff for AD
1265    
1266    checkpoint43
1267    o added two new advection tests
1268    o added global 4x4 degree ocean test
1269    o added test of H&S94 with free surface on cube
1270    o some final mods for gradient check, adjoint,...
1271    
1272    checkpoint42
1273      Fixed AD-related problems:
1274    o Store directives up-to-date with re-arranged Adams-Bashforth
1275      (mainly thermodynamics.F)
1276    o New store directives for multi-dim. advection schemes
1277      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1278      * new common block and key passkey
1279      (mainly gad_advection.F)
1280    o Modified store directives for split of dynamics/thermodynamics
1281      for the case ALLOW_KPP
1282    o Cleaned argument list for timestep_tracer.F
1283    
1284    checkpoint41
1285    o re-formatted/added comments in prologues of key subroutines
1286      to work with protex
1287    
1288    checkpoint40
1289    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1290    o added FLT (floats) package from Arne along with demo. experiment
1291    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1292      implementation of forward-in-time forcing terms
1293    o more mods for non-linear free-surface including new variable
1294    o modified multi-dim method to work on cube
1295    o bug fix in KPP (from DM)
1296    
1297    checkpoint40pre9
1298    o added DST advection schemes
1299    o fix MPI bug on SGI's
1300    o modifications for non-linear free-surface
1301    o fixed conditionals for fixed flow/passive tracer only mode
1302    o added tension/strain form of stress tensor
1303    o changes to commenting of arguments for TAF/TAMC
1304    o added/updated many matlab scripts
1305    o added multi-dimensional advection method for tracers
1306      
1307    checkpoint40pre8
1308    o new package rw/
1309      Added method for dumping intermediate local arrays:
1310      mdsio_writetile - same as mdsio_writefield except works from inside
1311                        bi,bj loop
1312      mdsio_writelocal - same as mdsio_writetile except works for local
1313                         arrays
1314      write_local_r? - higher-level wrapper for mdsio_writelocal
1315      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1316      Example given at end of mom_vecinv.F that dumps some local arrays.
1317    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1318      control flux-form versus vector invariant code.
1319      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1320      or genmake -DISABLE ...
1321    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1322      (additional storing is now needed for case vecinv;
1323      currently nothing implemented to switch this storing off
1324      in case fluxform is used since no CPP flag available).
1325    
1326    checkpoint40pre7
1327    o bug fix in dynamics.F
1328      calc_viscosity called before k=1,Nr loop.
1329    o added some #ifdef's ALLOW_PASSIVE_TRACER
1330    o cleaned initialisations in ctrl_map_ini
1331      related to TAF
1332    
1333    checkpoint40pre6
1334    o split dynamics into thermodynamics & dynamics
1335    o corresponding split of calc_diffusivity into
1336      calc_diffusivity, calc_viscosity
1337      (kpp_calc_diff, kpp_calc_visc).
1338    o Added diffkr, kapgm to control variables
1339    o bug fix in gmredi_slope_limit for ldd97
1340    
1341    checkpoint40pre5
1342    o proper initialization of Adams-Bashforth time stepping
1343      + uses forward step for very first step of model (iter=0)
1344    o re-generated *all* output since almost all output is modified by this
1345      change (sorry but we've been putting this one off for about 2 years)
1346      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1347        *not* regenerated since they are already out of date and I don't
1348        want to create the impression that they are suddenly working.
1349    o removed KAP stuff for DEC's
1350    o modified/added many .cvsignore files in */code and */input
1351    o added new expt "solid-body.cs-32x32x1"
1352      + this uses an alternative form of ini_curvilinear_grid.F which
1353        is not necessarily any better than the current one...
1354    
1355    checkpoint40pre4
1356    o added re-initialisations of utrans,vtrans,rtrans in
1357      calc_common_factors which are crucial for TAF.
1358    o extended iMin,jMin range for calc_common_factors,
1359      calc_diffusivity
1360    o added option ALLOW_PASSIVE_TRACER
1361    o a few minor updates and fixes
1362    
1363    checkpoint40pre3
1364    o created calc_gtr1.F for gad package
1365    o split the_main_loop and re-introduced forward_step
1366    o some recomputations of nIter0 for TAMC
1367    
1368    checkpoint40pre2
1369    o Updated to latest branch of AJA, JMC
1370    o Added gradient check package
1371    o Added routines for passive tracer handling
1372    o Added carbon sequestration sensitivity experiment
1373    
1374    checkpoint39
1375     o Modifications and fixes to support TAMC
1376       (mainly missing or wrong directives)
1377     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1378       in addummy_in_stepping
1379     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1380     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1381     o Included following packages:
1382       cal: calendar
1383       exf: external forcing
1384       ecco: essential routines to control use of cal, exf
1385             (NB: this is not the full ECCO environment)
1386     o disabled some packages by default in genmake
1387    
1388    checkpoint38
1389     o see notes_c37_adj.txt
1390     o corrected wrong layer index in external_forcing_t
1391     o replaced the_main_loop/forward_step by the_main_loop
1392     o removed forceoutput from write_state
1393       (replaced criteria for initial/final state)
1394     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1395    
1396    checkpoint37
1397     o mdsio.F routine split and packaged in pkg/mdsio
1398       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1399        used unless genmake -disable=mdsio)
1400     o allow a more precise surface-geopotential gradient for the atmosphere
1401       taking into account the change in space of Alpha (=1/rho) at the surface.
1402     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1403       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1404     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1405       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1406       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1407     o Time-Average diagnostics defined as a pseudo package "timeave".
1408     o pickup files : old pickup (before c35) did not work with new code (c35
1409       and after) unless activating 2 commented lines in initialise-varia.
1410     o Non-Hydrostatic pickup file Pb fixed.
1411     o bug with Rigid-lid version (since c35) fixed.  
1412    
1413    checkpoint36
1414     o implement Crank-Nickelson barotropic time-stepping
1415     o recover Time-Average diagnostics
1416     o fix Pb in checkpoint (PR#19)
1417     o AIM become a standard package ; clean unused CPP_kees
1418    
1419    checkpoint35
1420     o subtantial rewrite of dynamics.f
1421     o allows staggered time-stepping
1422     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1423     o added bottom drag (linear + quadratic)
1424    
1425    checkpoint34
1426     o Modified exchange routines for correct reverse simulation.
1427     o Added verification output to comply with bug fix in impldiff.F
1428       as of c33 (exp2, natl_box).
1429     o Corrected store directives in dynamics.F
1430     o Corrected array boundaries in impldiff.F
1431     o Corrected array dimensions in gmredi.
1432       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1433     o Added routine GLOBAL_SUM_INT to global_sum.F
1434     o Added mdsio_gl.F for ECCO purposes.
1435    
1436    checkpoint33
1437     o Fixed bug in lower BC in impldiff.F
1438     o Fixed confusion about units of forcing arrays in FFIELDS.h
1439       namely Fu,Fv,Qnet,Qsw,EmPmR:
1440       - Removed verification/natl_box/code/external_fields_scale.F
1441         (did not differ from that in model/src)
1442       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1443         (see FFIELDS.h for description)
1444       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1445         kpp_calc.F and kpp_transport_t.F
1446       - Removed model/src/external_fields_scale.F and calls to it
1447       - verification/natl_box uses flux data with "atmospheric" sign so
1448         a special version of external_fields_load.F is used to
1449         change the data as it's read in. This way, the arrays
1450         have the right units and signs at all times tha a user could
1451         possibly use them.
1452     o Corrected genmake to delete a temporary file during configuration
1453    
1454    checkpoint32
1455     o Scaling of forcing fields moved from external_forcing.F to
1456       external_fields_scale.F, called directly after loading fields.
1457     o Surface relaxation terms added to surface tendency fields in
1458       extra subroutine.
1459     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1460       fields.
1461     o Changes in GMRedi to comply with packaging structure.
1462     o Modifications and bug fixes in KPP package.
1463     o Verification experiment for KPP added (verification/nat_box/)
1464    
1465    checkpoint31
1466     o Packages interface brought in line with defined standard
1467       -> new routines packages_...F
1468       -> changes in initialise_fixed.F, initialise_varia.F
1469       -> enables initialisation interface for ECCO package
1470     o Rescaling of external forcing fields immediately after read
1471       (removed from external_forcing.F)
1472       -> new: surface_fields_scale.F
1473       -> affects ini_foorcing.F, external_fields_load.F
1474     o Computation of surface tendencies before tendency updates.
1475       -> new: external_forcing_surf.F
1476     o Change of variable names useGMRedi, useKPP, useECCO
1477     o Further changes in dynamics.F, impldiff.F for TAMC
1478     o Tested for experiments 0, 2, 4.
1479       - not yet tested for GMRedi.
1480       - not yet tested for KPP.
1481    
1482    checkpoint30
1483     o Updates for OBCs
1484     o New experiment for test OBCs (internal_wave)
1485     o New output.txt in verification/exp4/results/
1486     o Updates for KPP: calculation of viscosity corrected, new variables
1487       kpp_dumpFreq and kpp_taveFreq
1488     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1489       and entry for T90 in genmake
1490    
1491    checkpoint29
1492     o packaged KPP and GM/Redi
1493    
1494    checkpoint28
1495     o Corrected initialization of hFacMin for difference vertical coordinates
1496     o Modified calculation of partial cell thickness to more robust algorithm
1497     o config_summary.F: replaced write_1D_... by write_0D_...
1498       read_write.F: added subroutines write_0D_...
1499     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1500       included some initialisations required for TAMC.
1501     o routine calc_isoslopes: modified sqrt computation to make it
1502       differentiable for zero argument.
1503     o routines dynamics, impldiff:
1504       included store directives and tape key computations required for TAMC.
1505     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1506    
1507    checkpoint27
1508     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1509       formulation works properly with variable resolution.
1510     o restructured the calling tree between the_model_main() and dynamics()
1511     o split initialise() into initialise_fixed() and initialise_varia()
1512     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1513       in new routine ini_psurf()
1514    
1515    checkpoint26
1516     o moved some #ifdef in optional routines to encompass everything
1517       except the argument declarations. This was using up some memory.
1518     o fixed macros like _ADT to work with both versions of Linux cpp
1519     o cleaned up some unused and uninitialized variables
1520       (helps when debugging with strict compile options)
1521     o split up CPP_EEOPTIONS.h into options and macros
1522       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1523     o patch for 2 processor JAM mode
1524    
1525    checkpoint25
1526     o updates for OBCs and NH
1527     o dramatically reduced memory usage
1528     o added "JAM" routines for use on Artic network
1529     o parameterization of convection by implicit vertical diffusion
1530     o added a diagnostic of convective index
1531     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1532       (this is was partly for OBCs and NH but also in anticipation of
1533        an explicit free-surface option)
1534     o initial state input files for U and V
1535    
1536    checkpoint24
1537     o Removed some spurious "REAL"s
1538     o Updated KPP to latest version from JPL
1539     o Added a COS(latitude) in horizontal viscosity
1540    
1541    checkpoint23
1542     o Added del^4 diffusion for salt and temperature
1543     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1544    
1545    checkpoint22
1546     o Made many small changes: implicit none, format(i5), etc...
1547     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1548    
1549    checkpoint21
1550     o Introduced new I/O package that supports direct-access records (mdsio.F)
1551     o Split-up mid-level I/O routines
1552     o Updated input data for experiments 0,1,2,4 and 5
1553     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1554    
1555    checkpoint20
1556     o Tidied up open-boundaries some more
1557     o Added non-hydrostatic code
1558     o Fixed some input data
1559     o Modified MPI start-up to work in "coupled" context.
1560    
1561    checkpoint19
1562     o Tidied up directory structure for verification experiments.
1563     o Added new code for open boundaries.
1564     o Corrected advective terms near boundaries.
1565     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1566     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1567     o Split default parameters out of ini_parms.F into set_defaults.F.
1568    
1569    checkpoint18
1570     o Further changes for optional code generation with
1571       CPP - ugh!
1572    
1573    checkpoint17
1574     o Beginning to incorporating modularity
1575       for supporting atmos. and ocean configs.
1576     o Small changes for TAMC complinace
1577     o New ultra simple test case. Barotropic box
1578       configuration "exp0".
1579    
1580    checkpoint16
1581     o Minor changes to exchange routines to support
1582       accumulation in reverse mode. Adjoint of an
1583       assignment is an addition.
1584     o Changes to support compilation by TAMC (LR(1)
1585       syntax) and by g77 under Linux ( 72 character
1586       limit ).
1587    
1588    checkpoint15
1589     Rewrote exchange routines to allow
1590     o General tile <-> tile connectivity.
1591     o TAMC reverse mode flag ( is this really needed? )
1592     o Variable width overlap and exchange region widths.
1593     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1594       shmput/shmget, VIA, SYSV shmem and every other cool
1595       communication method.
1596    
1597    checkpoint14
1598     Consistent isomorphism chages made. These allow dynamical core
1599     to support both pressure and meters as a vertical coordinate.
1600    
1601    checkpoint13
1602     Release which corrects global_max problem and a couple
1603     of KGM time-averaging diagnostic errors. Also contains
1604     a double-gyre experiment setup as well as the baseline
1605     4 degree global template. The double gyre template is
1606     organised to allow it to be applied automatically to
1607     the baseline configuration.
1608    
1609    branch-point-rdot
1610     A few tidy-ups have been made bt the real point of this
1611     check-point (excuse the pun) is to allow a branch to be
1612     made for the purposes of adding the rDot alterations.
1613     I don't want to commit the rDot to the main-trunk until
1614     we've actually tested it...
1615    
1616    checkpoint12
1617     Tidy up and added generic genmake script (formerly
1618     configure script).
1619     Released to testers.
1620    
1621    checkpoint11
1622     Re-arranged initialise() and introduced ini_vertical_grid()
1623     and ini_masks_etc().
1624    
1625    checkpoint10
1626     Introduced the configure script.
1627     Separated out the diags package.
1628     Added template for writing time-averages of tile/intermediate quantities.
1629     Updated SIZE.h in exp2 and made the data big-endian.
1630    
1631    checkpoint9
1632     MPI fix. Filename changes (meta/data). salbin*y stuff.
1633     General tidy-up.
1634     SST.bin SSS.bin added to verification/exp2
1635    
1636    checkpoint8
1637     Inludes time-dependant forcing and time-averaging.
1638     Works at 4x4 and 2.8125x2.8125 global
1639    
1640    checkpoint7-4degree-ref
1641     Branch from checkpoint7. Released for application to
1642     global modeling and general modeling - process studies, regional
1643     model etc..
1644     Configured for verification/exp2 - 4 degree global, two process.
1645    
1646    checkpoint7
1647     Created by cnh
1648     Simple 4 degree global simulation
1649     configuration.
1650     Includes climatological wind,
1651     hydrography, bathymetry etc
1652     Does not include Heat Flux and E-P
1653    
1654    checkpoint6
1655     Created by cnh
1656     merged checkpoint5 with CD and
1657     spherical polar code.
1658     Still some problems with GM Redi
1659     abd full topography.
1660    
1661    checkpoint5
1662     Created by AJA
1663     contains updates to GM Redi
1664     and reordered timestepping loop
1665     for Implicit Diffusion.
1666    
1667  checkpoint4  checkpoint4
1668   Created by cnh   Created by cnh
1669   Contains memory saving macros ( _rdxc etc..) for when   Contains memory saving macros ( _rdxc etc..) for when

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