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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.277 by mlosch, Sun Apr 18 20:36:56 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 commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
7      this does not change any of the results, because myIter=0 in swfrac always
8      lead to jwtype=2 (the default anyway), but the call makes little sense
9      as a default
10    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
11    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
12      atmospheric model (AIM) to use it ; add a "slab ocean" component.
13    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
14    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
15    o extending useSingleCpuIO option to work with new exch2 I/O format
16      - old-style, missing-tile I/O is still accessible by defining CPP
17        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
18    o monitor package can write to NetCDF files and/or STDOUT
19    o fix re-definition bug in MNC_GRID_INIT_ALL()
20    o doc/api_reference added
21      - a framework for building an API Reference Manual using all
22        the "protex" comments embedded in the code
23      - see pkg/generic_advdiff, pkg/mnc for examples
24    o MNC:
25      - make myThid the last argument for all subroutines
26      - new default for the grid files: NO halos
27      - add useMNC and other run-time flags
28      - separate per-file-group handling of the unlimited dimension
29      - early initialization of MNC w/ flags read at the eeboot stage
30        and lookup tables set in initialize_fixed
31      - write all MNC output to a freshly-created directory
32    o thermodynamics sea-ice (thsice) is now tested with testreport.
33    o test exp. advect_cs: use the standard cs32 grid ; update output.
34    o Added functionality to grdchk:
35      pick global i,j,k position (or nearest wet) where to perform check.
36    
37    checkpoint52l_post
38    o new land formulation:
39      a) use ground enthalpy as prognostic variable to ensure exact
40         energy conservation.
41      b) account for water temperature and for latent heat of freezing
42         in all processes (rain, run-off, ground storage)
43      c) compute surface and ground temperature implicitly.
44    o aim_v23 modification for new land model:
45      a) Treat separately land / ocean / sea-ice surface fluxes
46         to allow implicit computation of land & sea-ice surface temp.
47      b) add snow precipitation.
48    checkpoint52l_pre
49    
50    o fix problem (when 1 tile is empty) in min/max monitor.
51    o fix bug in timeAve (u,vZetatave in common block)
52    o no restoring terms under ice for pkg/seaice
53    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
54    o bug fix for pkg/seaice pickups
55    o change MNC call locations and add coordinate attributes
56    o mask vorticity at the corner ; affects global_ocean.cs output
57    o fix ini_curvilinear_grid ; test CS experiments with mpi
58    o aim.5l_cs: modify sea-ice fraction input file ; update output
59    o exf: Adding simple range check routine for exf fields after read
60    
61    checkpoint52k_post
62    o removed top-level directory "diags"
63      - we migrated these functions to pkg/timeave a long time ago
64    o fixed bug introduced in pkg/monitor
65    o accuracy ctrlprec = 32 insuffient for gradient checks using
66      averaged fields (I/O via cost_averages)
67      -> use ctrl.h in active_file*.F to control I/O precision.
68    o paramter list of CALL ADTHE_MAIN_LOOP
69    o added initial do_the_model_io to ecco
70    o set all ...Freq to zero after cost_final
71      taveFreq, dumpFreq, pChkptFreq
72    o MAIN and ECCO differentiability restored
73    
74    checkpoint52j_post
75    o fix nchklev in tamc.h for global_ocean...
76    o Bringing flow and store directives up-to-date
77    o Really weird thing!
78      call do_the_model_io from the_main_loop with parameters
79      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
80      TAF places a faulty re-call of initialise_varia
81      after cost_final call which should not be there!
82    checkpoint52j_pre
83    
84    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
85      error messages
86    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
87    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
88      debug output
89    o modfied mdsio_writefield.F to handle non-global files under exch2
90    o update AIM Cubed-Sphere exp (aim.5l_cs):
91      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
92    o update AIM Equatorial Channel exp:
93      use standard aim_v23 pkg and change the SST fields to be more realistic.
94    o globalFile now works with exch2
95    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
96      mon_vort3.F to make exch2 friendly with >1 tile per cube face
97    o limit timeave output for hi-res integrations
98    
99    checkpoint52i_post
100    o removed CPP_EEOPTIONS.h from verification/*/code
101    o updated the tiling for global_ocean_pressure
102    checkpoint52i_pre
103    
104    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
105      the old pkg/aim).
106    
107    checkpoint52h_pre
108    o shortened offending lines in exch2_send_rx?.template
109    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
110    o genmake2: add build & execute test for NetCDF code
111    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
112      old grid files, moved CPP_EEMACROS.h to pkg/exch2
113    o added useSingleCPUIO flag to monitor.F and mon_out.F
114    o added temporary hack for sea-ice dynamics on the cube:
115      metric terms are ignored and it is assumed that
116      there is no sea-ice on cube faces 1, 2, 4, and 5.
117    
118    checkpoint52f_post
119    o added exch2 cube routines to pkg/exch2
120    o modified hs94.cs-32x32x5 to use it
121    o added new grid files to hs94.cs-32x32x5
122    checkpoint52f_pre
123    
124    checkpoint52e_post
125    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
126      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
127    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
128      to work with implicit vertical advection and AB ;
129    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
130    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
131     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
132    checkpoint52e_pre
133    
134    o fix bug in impldiff when Nr=1 or Nr=2.
135    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
136    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
137    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
138      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
139    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
140    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
141    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
142    
143    checkpoint52d_post
144    o re-tiled many expts to allow comparison in multi-processor mode
145      - updated output accordingly
146      - changed hs94.128x64x5 to use intial T from file rather than use the
147        random number generator
148    o add infrastructure in model routines for fizhi and gridalt packages
149    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
150    o changes to permit hi-res, cubed-sphere, configuration
151      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
152      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
153      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
154        of surface winds for the cube
155      (A verification experiment, based on global_ocean.cs32x15, but with
156       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
157       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
158       complete with example surface forcing files and matlab scripts to look
159       at the output and compare it with that of global_ocean.cs32x15.)
160    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
161       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
162       to conform to the common rule.
163    o check-in the first version of the coupler + interfaces for multi-components
164       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
165       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
166       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
167       - ocean and atmos. share the same horizontal grid (no interpolation).
168       - exchanges between component and coupler is done in forward_step
169    o new verification experiment, cpl_aim+ocn:
170       coupled ocean - AIM atmosphere on cs32 grid.
171    
172    checkpoint52d_pre
173    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
174    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
175    
176    checkpoint52c_post
177    o Fixing OPTIONS files for use of exf:
178      - ALLOW_ECCO not needed
179      - ECCO_CPPOPTIONS.h should not be included from
180        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
181        as has been the case in the past
182      - All cal/exf related options are currently set in
183        single header file. Should remain so until we
184        agree on a consistent new policy.
185    o Removed all CPP options for cal package.
186      cal has no more CPP options.
187    o modified STOREs in GAD_ADVECTION
188    o corrected key comp. for passkey
189    
190    checkpoint52b_post
191    o new version: "thsice" of thermodynamic sea-ice pkg:
192     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
193     - modify fluxes but do not change theta directly;
194     - light cleaning of bulk_force pkg (still needed with thsice).
195     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
196       + output_thsice.txt to test thsice & bulk_force pkgs.
197    o put back grid & coriolis monitor output.
198    checkpoint52b_pre
199    
200    o call "do_the_model_io" at the beginning (=> dump initial state)
201    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
202    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
203      (need info on NUMBER_OF_PTRACERS)
204    o missing PTRACERS headers in some routines
205    o default tamc.h in pkg/autodiff supposed to crash
206      to ensure proper customization
207    
208    checkpoint52a_post
209    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
210      - moved surfaceTendencyTice from pkg/seaice to main code
211      - subroutine FREEZE_SURFACE now limits only surface temperature
212        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
213        => new output.txt for global_ocean.cs32x15 & global_with_exf
214      - keep the old version of FREEZE for backward compatibility;
215        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
216      - corresponding modifs for TAF directives
217    o added surface flux output variables to TIMEAVE_STATVARS
218    o time-averaged output for pkg/ptracers
219    o fix problem with ECCO-related divided adjoint
220      snapshot file was missing some ad-variables,
221      but no warning issued by TAF
222    
223    checkpoint52a_pre
224    o some bug fixes for #undef REAL4_IS_SLOW
225    
226    checkpoint52 = ecco_c52_e35
227    o after testing adjoints of checkpoint51u_post
228    
229    checkpoint51u_post
230    o this is the post-merge tag of the ecco-branch
231      (needs another clean checkout and re-testing)
232    o various natl_box_adjoint configs and results
233      but no input fields
234    o obcs adjoint not yet merged!
235    o adding ECCO global 1x1 and 2x2 degree configs
236    o updated/extended some store directives for seaice
237    o pkg/ecco now containes ecco-specific part of cost function
238    o top level routines the_main_loop, forward_step
239      supersede those in model/src/
240      previous input data.cost now in data.ecco
241      (new namelist ecco_cost_nml)
242    o in ctrl/ cleaned some cross-dependencies and updated CPP options
243    
244    checkpoint51t_post
245    o this is the pre-merge tag of the ecco-branch
246    
247    checkpoint51s_post
248    o cleanup: removed various obsolete #define-s
249    o pkg/grdchk
250      - renamed 'ph-grd 3' to 'grad-res'
251      - merged from ecco-branch
252        (remaining bug fixes for obcs gradient checks)
253      - additional high-precision output for testreport
254        (grep for 'precision_grdchk_result')
255    
256    checkpoint51r_post
257    o cleaned up or removed CPP_OPTIONS.h files
258    o updated results for some of the tests to reflect the new
259      optfiles (-ieee: -O0 instead of -O3)
260    
261    checkpoint51q_post
262    o cd_code:
263      - moved cd_scheme.F -> cd_code_scheme.F
264      - separate read_checkpoint from cd_code_ini_vars.F
265      - separated cd_code part from write_checkpoint
266      - updated AD_SOURCE, generated .flow
267      - added CD_CODE_VARS.h to the_main_loop
268      - Moving cd_code specific store dir.s to pkg/cd_code
269    o ctrl package totally restructured
270      - pack/unpack now optional and decoupled from
271        xx_/adxx_ I/O
272      - ctrl_pack/unpack cleaned
273        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
274      - confined inclusion of AD_CONFIG.h to where necessary.
275    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
276    
277    checkpoint51p_post
278    o create initial cd_code package
279      - WARNING: the initialization of fields within packages
280        is broken because INI_FIELDS (where READ_CHECKPOINT is
281        called) is called *before* PACKAGES_INIT_VARIABLES.
282        This seems to be backwards since
283        1) its important to initially zero the entire field including
284           the "halo" region
285        2) zeroing needs to be done *before* reading pickup info
286           and the pickup call might or might not happen in any
287           particular run
288      - this needs an overhaul for R2
289    o cleanup verification/*/code/GMREDI_OPTIONS.h
290    o cleanup testreport
291    
292    checkpoint51o_post
293    o bringing AD-related verif's up to date with genmake2
294      - carbon/
295      - global_ocean.90x40x15/
296      - hs.94.1x64x5/
297      - (front_relax/ )
298    o (more) consistent directory structure for AD-related verif.'s
299    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
300    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
301    o bug fix in find_alpha.F for MDJWF:
302      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
303        change rho -> rho-rhoConst
304      - replace call find_rho to find_rhonum
305    o initialisation of rFlx extended to full array (required by TAF)
306      and shifted to thermodynamics
307    o removed PTRACERS.h in ptracers routine
308    o added surfacetendencyPtr to S/R parameter list pracers_forcing
309    o Correcting initialisations for fVerU, fVerV.
310    o helping TAF to recognize dependency on kUp for
311      fVerU, fVerV
312    o Replacing delZ by delR in pkg/ctrl/
313    checkpoint51o_pre
314    
315    o undid all of cp51 pending some cleanups and discussion
316    o added the [#include "AD_CONFIG.h"] statement to all files that need
317       it for adjoint/tl #defines
318     o re-worked the build logic in genmake2 to support AD_CONFIG.h
319     o removed tools/genmake since it no longer works
320    
321    checkpoint51n_post
322    o modifications to make FREEZE flux visible to pkg/kpp
323      - moved surfaceTendencyTice from pkg/seaice to main code
324      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
325      - subroutine FREEZE now limits only surface temperature
326        (this means new output.txt for global_ocean.90x40x15,
327         global_ocean.cs32x15, and global_with_exf)
328    o added surface flux output variables to TIMEAVE_STATVARS
329    
330    checkpoint51n_pre
331    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
332    o added [#include "AD_CONFIG.h"] to all files that use the following
333      defines:
334      - ALLOW_ADJOINT_RUN
335      - ALLOW_TANGENTLINEAR_RUN
336      - ALLOW_ECCO_OPTIMIZATION
337    
338    checkpoint51m_post
339    o incorporating changes to get TAMC/TAF working in genmake2
340      - added new TAMC/TAF targets to the Makefile
341      - various cleanups related to package handling
342      - these changes should have no impact on the forward model
343    
344    checkpoint51l_post
345    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
346     - faster algorithm for cal_addtime.F
347     - higher precision arithmetic, where needed
348     - pkg/exf *startdate variables changed from calendar date to
349       model integration time
350    
351    checkpoint51l_pre
352    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
353    o enable to apply restoring on S & T only in a latitude band.
354    o update output (external_forcing_surf modif. change truncation errors)
355       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
356    
357    checkpoint51k_post
358    o change default to: useNHMTerms=.FALSE.
359     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
360       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
361     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
362        exp1, ideal_2D_oce
363     - change data file of oceanic exp (leave the results unchanged for now)
364       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
365    o set gravitySign automatically according to the vertical coordinate used
366      (and change sign: back to "logical" value: +1 when R increases downward)
367    o added an include barrier to the default CPP_OPTIONS.h and
368      removed the #include "PACKAGES_CONFIG.h" from it
369    o fix a bug in mom_fluxform (from chk51j_post)
370    
371    checkpoint51j_post
372    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
373    o adjusted some flow directives (dynamics, thermodynamics)
374    o added cubed-sphere case to test cost function
375    o heckpoint_lev?_directives.h now include
376      pkg-specific directives, whenever those are enabled.
377    o Moving pkg-specific flow directives to corresponding pkg
378      Moving pkg-specific differentiation list to corresponding pkg
379      Moving pkg-specific checkpoint-lev storing to corresponding pkg
380      ---> conventions are
381           - pkg_ad.flow
382           - pkg_ad_diff.list
383           - pkg_ad_check_lev?_dir.h
384    
385    checkpoint51i_post
386    o merge of the branch-genmake2
387      - knowingly breaks the older genmake
388      - automatic generation of all ALLOW_${PKG_NAME} defines
389      - new testreport supersedes older testscript
390    o large number of package inclusion and header cleanups
391    checkpoint51i_pre
392    
393    o new output for adjoin of global ocean vector invariant
394    o fix for checkpoint of thermodynamic seaice and bulk_force
395    o Steph gchem various cleanups
396    
397    checkpoint 51h_pre
398    o fixed some single quotes
399    o modify gchem pkg to be more versatile
400    o modifications to clean up dic pkg
401    o add pkg/cfc
402    
403    checkpoint51g_post
404    o provide links for ARPACK and ADM*TLM
405    o start removing verification/vero/
406    o update AD-related stuff
407      (in particular some IF-statements in model/src/ routines)
408    o adding to verification/global_ocean.90x40x15/ adjoint of
409      vector invariant setup
410    
411    checkpoint51f_post
412    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
413    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
414      of tracer Green's fucntions for ocean inversion project.
415    
416    checkpoint51f_pre
417    o Added on-the-fly spatial interpolation capability
418        "USE_EXF_INTERPOLATION" to pkg/exf.
419      - This is a temporary Cartesian-grid hack until
420        the super-duper ESMF coupler becomes available.
421      - See verification/global_with_exf/README for usage example.
422      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
423        flags and modified pkg/seaice accordingly.
424    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
425        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
426        non-local transport term.
427    
428    checkpoint51e_post
429    o pkg/mom_vecinv:
430      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
431      - add time-ave diagnostic of vorticity advection.
432    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
433    o atmospheric geopotential: - include water vapor effect;
434                                - use p^kappa in p* scaling.
435    o land pkg: read initial state from files.
436    o AIM : add stratospheric drag in the upper level
437    
438    checkpoint51d_post
439    o change function ILNBLNK (=> last non-blank char.) to return zero
440      (instead of the string length) when the string. char is empty
441    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
442    o modif's to restore TAMC compatibility
443      - avoid "_d" constructs in PARAMETER declarations
444      - avoid interrupting lines by comment lines
445    o Use cluster local disks for purely local I/O
446      vs. globally visible disks needed for ctrl stuff
447      (merged from ecco-branch)
448      - new active_file_loc... and mdsio_..._loc routines
449      - affected packages: autodiff, ctrl, grdchk, mdsio
450    
451    checkpoint51c_post
452    o introducing integer flag debugLevel
453      - debLevZero: suppress all output
454      - debLevA: standard
455      - debLevB: equivalent to current debugMode=.TRUE.
456    o introducing pathname variable mdsioLocalDir for mdsio
457      that can be specified at runtime
458      (relevant for cluster I/O to local disk)
459    `
460    >>>checkpoint51b_post
461    adjoint of ptracers
462    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
463    o extended state in checkpoint_lev?, etc.
464    o alternative ctrl/cost with tr1 or ptracer
465    o new comlev1_bibj_ptracers
466    o new ptracers.flow
467    o made ptracers_forcing same as external_forcing_s
468    o added verification for adjoint with ptracers
469      - adm. grdchk fail so far
470      - tlm. grdchk OK
471      - checked tapelev/comlev recomputations: OK
472    <<<checkpoint51b_pre
473    
474    checkpoint51a_post
475    o added code for biogeochemistry package
476      - new pkgs: dic, gchem
477      - new subroutine in ptracers
478    o modify code for biogeo packages
479      - in model/src and pkg/ptracers
480    
481    checkpoint51
482    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
483      - autodiff, ctrl, exf, grdchk, seaice
484      kept separate packages
485      - cost, ecco, obcs
486    o updating verification/internal_wave, verification/lab_sea
487      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
488    
489    checkpoint50i_post
490    o Preparing next differentiable checkpoint and sync
491      of MAIN vs. ecco-branch
492      - 1st step: this one is differentiable
493      - 2nd step: next(! not this) checkpoint will have updated packages
494                  from ecco-branch)
495    
496    checkpoint50h_post
497    o new package "land": provide surface BC for AIM.
498    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
499    o AIM: use true log-P extrapolation for near surface temp (= as in
500        F.Molteni paper) ; update aim.5l_cs output.
501    o New variable in PARM03 for more flexible pickups
502    o somewhat cleaned package initialisation sequence for
503      ctrl/ cost/ ecco/ in packages_... routines
504    
505    checkpoint50g_post
506    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
507      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
508      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
509        made the default because of faster convergence than ADI
510    
511    checkpoint50f_post
512    o exf totally restructured
513      - replaced all exf_set_ routines by one generic exf_set_gen.F
514        and made sure it's still differentiable
515      - split exf_getffields.F into new exf_bulkformulae.F
516      - exf_inscal_/exf_outscal_ suffixes consistent with field names
517      - updated adjoint/makefile and relevant verif. accordingly
518    
519    checkpoint50f_pre
520     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
521          + change Evap over land. (update aim.5l_cs output)
522     o added missing .cvsignores and made uniform across expts
523     o changed configuration of tidal_basin_2d expt
524     o added pkg/debug functions for tracing code in fatal crashes
525     o tidied pkg/monitor to use MONITOR_OPTIONS.h
526     o new fn in pkg/monitor to stop model if solution grows too big
527     o removed lots of single quotes from comments
528    
529    checkpoint50e_post
530    o make KPP work with PTRACERS
531     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
532       nearly a copy of kpp_transport_s
533     - there is no analogue to SurfaceTendencyS, so I have to use
534       gPtr(of the surface layer) instead
535    o add a new platform SunFire+mpi (SunFire 15000) to genmake
536    checkpoint50e_pre
537    
538    checkpoint50d_post
539    o change kpp output from multiple-record state files to single-record state
540      files analogous to write_state.F
541    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
542      analogous to the cg2d-related output.
543    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
544      so that writing to internal file fn (with length 512) fails.
545    checkpoint50d_pre
546    
547    checkpoint50c_post
548    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
549    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
550    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
551    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
552    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
553    
554    checkpoint50c_pre
555    Merging from release1_p13:
556    o bug fix for pkg/seaice dynamic solver
557    o Added SEAICE_initialHEFF to pkg/seaice
558    
559    checkpoint50b_post
560    o store u*,v* in gU,V instead of in guNm1,gvNm1
561    o in order to put the momForcing out of the Adams-Bashforth:
562      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
563      to timestep.F
564    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
565    o re-generate output for highly sensitive test-exp:
566       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
567    
568    checkpoint50b_pre
569    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
570    o corrected CPP option mismatch in exf_Bulk... functions for case
571      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
572    
573    checkpoint50a_post
574    o Bug fix for merging between c50 and KPP.
575      ikey was passed from thermodynamics to kpp_calc via
576      common block rather than being recomputed in kpp_calc,
577      in contradiction with new key itdkey.
578      New key ikppkey created, and tamc.h headers updated.
579    
580    checkpoint50
581    - 2nd step of merge with ecco-branch:
582      merge changes in ecco-branch back into main trunk
583    - bug fix in find_alpha
584    - more storing in gmredi_calc_tensor.F, kpp_routines.F
585    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
586    - merged some sliced AD support routines
587    
588    checkpoint49
589    merged from ecco-branch:
590    o exf:
591      - Enable initialisation of forcing fields to constant
592        (runtime) values.
593      - in exf_getffields.F
594        Reduce i-/j-loop to interior domain, discarding overlaps.
595        That also fixes wrong TAF-key computations for key_1, key_2
596        with bulf formulae.
597      - exf_init.F modify #ifdef for exf_init_evap
598      - exf_getffieldrec.F, ctrl_getrec.F
599        The following INT-usages are not safe:
600          fldsecs  = int(fldsecs/fldperiod)*fldperiod
601          fldcount = int(fldsecs/fldperiod) + 1
602        and were modified.
603    o autodiff: checkpoint_lev...
604      - updated storing for bulk formulae (some arrays were missing)
605      - added state for seaice package
606      - synchronized with main branch
607    o DIVA:
608      Modif.s in
609      - the_main_loop.F
610      - the_model_main.F
611      and added cost_final_restore.F cost_final_store.F
612      o With these changes, it is possible to fully separate
613        the first forward run to compute the cost function (mdthe_main_loop)
614        and adjoint runs over individual DIVA intervals (adthe_main_loop)
615        into separate model executions.
616        This enables better tuning of DIVA to given queue sizes.
617      o Loss of cost function value in consecutive DIVA runs is
618        fixed by storing to 'costfinal' file.
619      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
620        beginning/end of adjoint integration is accounted for.
621      The current changes apply to TAF-1.4.26.
622      TAF has one remaining bug, requiring one manual change
623      (see MITgcm manual).
624    o cal: synchronized between MAIN and ecco-branch
625    
626    checkpoint48i_post
627    o Changes to restore differentiability of code w.r.t. previous tag
628      (mostly adding new routines to make list and replacing
629      pressure by totPhiHyd).
630    o Updated and merged grdchk package
631      - has both ADM and TLM checks
632      - works for single- and multi-proc.
633      - output cleaned
634      - worked successfully for parallel DIVA
635    o genmake:
636      - Adding -platform=SP4
637      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
638    o Modif. for DIVA:
639      ctrl_unpack should not be called in intermediate DIVA interval.
640      (similar thing would apply for active files such as
641      tbar, sbar, psbar, which should not be reinitialised;
642      only relevant for ecco-branch)
643    
644    checkpoint48h_post
645    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
646    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
647    o Added SEAICE_initialHEFF to pkg/seaice
648    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
649    
650    checkpoint48g_post
651    --- EOS:
652    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
653      store total Potential in totPhyHyd for diagnostics & EOS.
654    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
655    --- Pressure/geopotential gradient:
656    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
657    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
658      ( changes results of global_ocean_pressure )
659    o NLFS + z-coord.: add eta*Rho' contribution.
660    o accurate phiHyd when using interface-W at the middle between 2 centers
661     ( changes results of ideal_2D_oce )
662    o includes r* 2nd term in potential gradient.
663    
664    checkpoint48f_post
665    Merging from release1_p12:
666    o Modifications for using pkg/exf with pkg/seaice
667      - improved description of the various forcing configurations
668      - added basic radiation bulk formulae to pkg/exf
669      - units/sign fix for evap computation in exf_getffields.F
670      - updated verification/global_with_exf/results/output.txt
671    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
672      (SBO) core products, including oceanic mass, center-of-mass,
673      angular, and bottom pressure (see pkg/sbo/README.sbo).
674    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
675      to avoid negative values in shallow regions.
676      - updated verification/natl_box/results/output.txt
677      - updated verification/lab_sea/results/output.txt
678    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
679    o Added useSingleCpuIO option (see PARAMS.h).
680    o Updated useSingleCpuIO option in mdsio_writefield.F to
681      work with multi-field files, e.g., for single-file pickup.
682    o pkg/seaice:
683      - bug fix in growth.F: QNET for no shortwave case
684      - added HeffFile for specifying initial sea-ice thickness
685      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
686    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
687      kpp_transport_t.F, forward_step.F, and the_main_loop.F
688    o pkg/seaice:
689      - adjoint-friendly modifications
690      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
691    
692    checkpoint48e_post
693    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
694    o dynamics: change definition of computational domain & adapt mom_fluxform
695      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
696    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
697        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
698        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
699        global_ocean.90x40x15 global_with_exf global_ocean_pressure
700        inverted_barometer solid-body.cs-32x32x1
701      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
702    
703    checkpoint48d_post
704    o in preparation for r*:
705     a) use pre-computed gradient of hydrostatic potential:
706        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
707     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
708        => affects results of glob_oce_pressure (different truncation error)  
709      update output.txt of ideal_2D_oce & global_ocean_pressure
710    
711    checkpoint48d_pre
712    o in preparation for r*:
713      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
714      pass the 2 comp. of the grad. as arguments to momentum S/R.
715      but for the moment, only used if it does not change the results.
716    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
717    
718    checkpoint48c_post
719    Modifications in treatment of initial flux forcing controls
720    to avoid extra storing of flux fields.
721    
722    checkpoint48c_pre
723    o Added tidal_basin_2d experiment (currently 1D!)
724    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
725    
726    checkpoint48b_post
727    o r* coordinate added in #ifdef NONLIN_FRSURF block.
728     (modification to pressure gradient not yet implemented)
729    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
730      (for U & V) that are used for vertical advection of momentum.
731    
732    checkpoint48a_post
733    o In preparation for r*, use temp. array to compute vertical transport
734       in flux-form momentum pkg. => change results of few test-exp.
735      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
736                        lab_sea, natl_box & plume_on_slope
737    
738    checkpoint48
739    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
740    
741    checkpoint47j_post
742    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
743    o moved adexch from forward_step to addummy_in_stepping
744    o added exch in ctrl_map_...
745    o aveFreq.=0. at end of cost_final to avoid overwrite in
746      reverse checkpointing loop
747    o Yet more changes in gmredi:
748      * adgmredi_calc_tensor
749        avoiding all recomputation of gmredi_slope_limit
750      * adgmredi_x/y/rtransport
751        added flag for excessive storing to avoid recomp. of
752        u/v/rtans, dTdx/y/z
753        -> this is not really necessary and very memory-consuming
754      * adgmredi_slope_psi:
755        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
756      * gmredi_slope_limit
757        re-activated full calculation of taperfct for case 'ac02'
758    o updating verification/ adjoints of carbon, global_ocean.90x40x15
759    
760    checkpoint47i_post
761    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
762    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
763      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
764    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
765    o gmredi: fix few bugs.
766    
767    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
768    This will be a good checkpoint to plug into the ecco-branch.
769    o few modif.'s to get latest version adjointed
770      (mainly kick out code in ini_linear_phisurf)
771    o modif's to run adjoint with exactConserv
772    o case GM_BOLUS_ADVEC should be cleaned
773      S/R gmredi_slope_psi should be cleaned
774    o verification/carbon now has exactConserv=.TRUE.
775    
776    checkpoint47g_post
777    o time-average AIM output: becomes independent from statvars time-average
778      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
779    o After TAF bug fix:
780      Tested adjoint of gmredi package.
781      Tests were done with checkpoint47 rather than with latest
782      checkpoint47f_post since the latter is broken for the adjoint
783      verification/carbon/ contains both ADM and TLM gradient checks.
784    Here they are, before they get changed/lost/stolen.
785    Mostly modif.'s to fix numerical sensitivities.
786    Gradient checks OK for
787    - GM_taper_scheme:
788      * clipping
789      * ac02
790      * linear
791      * glw91
792      * dm95
793      * ldd97
794    - GMREDI_OPTIONS:
795      * GM_VISBECK_VARIABLE_K
796      * GM_NON_UNITY_DIAGONAL
797      * GM_EXTRA_DIAGONAL
798      * GM_BOLUS_ADVEC
799    in conjunction with data.gmredi parameters to be checked in
800    in a few minutes under verification/carbon/code/
801    
802    checkpoint47f_post
803    Merging from release1_p10:
804    o modifications for using pkg/exf with pkg/seaice
805      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
806        and SEAICE_EXTERNAL_FLUXES
807      - pkg/exf CPP options EXF_READ_EVAP and
808        EXF_NO_BULK_COMPUTATIONS
809      - usage examples are Experiments 8 and 9 in
810        verification/lab_sea/README
811      - verification/lab_sea default experiment now uses
812        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
813    
814    checkpoint47e_post
815    o created a tag prior to creating a branch
816    
817    checkpoint47d_post
818    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
819      at the bottom boundary had an erroneous half slip boundary condition
820    o added bottom drag and no slip boundary condition capabilities to
821      oceanic pressure coordinates code
822    o added new verification experiment global_ocean_pressure, this experiment is
823      also described in the tutorial section of the manual
824    checkpoint47d_pre
825    
826    checkpoint47c_post
827    o Added a verification experiment for a global cubed-sphere ocean run
828      -  verification/global_ocean.cubed32x32x30
829      -  uses pkg/therm_seaice and pkg/bulk_forcing
830    
831    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
832    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
833      when using P-coordinate; only implemented for atmospheric config.
834    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
835      NOTES: requires option NONLIN_FRSURF to be "#define".
836    o update advect_xz/results/output.txt (left from checkpoint44g_post)
837    
838    checkpoint47b_post
839    Merging from release1_p9:
840    o pkg/seaice
841      - removed GOTO's and added taf directives
842      - double precision constants to reduce the g77 (Linux)
843        to F77 (SGI) differences reported in release1_p8
844    o tools/genmake
845      - added SGI options
846    o verification/testscript
847      - updated to that of checkpoint47a_post
848    o verification/global_ocean.90x40x15/input/eedata
849      - modified for SGI f77 compatibility
850    o verification/lab_sea
851      - added description of sea-ice model
852      - added missing matlab routines
853      - added test of thermodynamics parallelization
854    
855    checkpoint47a_post
856    o new pkg: aim_v23
857     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
858       for now, keep the same surface forcing as before.
859     - Part-Cell implemented into AIM; check that Heat & Water are conserved
860     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
861     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
862    o add diagnostic of surface correction term in monitor output
863    
864    o bulk_force and therm_seaice
865    - Two packages:  bulk_force (Bulk forcing)
866      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
867    - Earlier integration from Stephaine Dutkiewicz
868      and Patrick Heimbach.
869    - Two ifdef statements for compile time,
870       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
871    
872    checkpoint47
873    differentiable version of checkpoint46n_post
874    o bug fix in quasihydrostaticterms
875    o * "clean" adjoint code (in terms of extensive recomputations)
876        can now be obtained for all GMREDI options (i.e. for
877        - GM_VISBECK_VARIABLE_K
878        - GM_NON_UNITY_DIAGONAL
879        - GM_EXTRA_DIAGONAL
880        - GM_BOLUS_ADVEC )
881      * However, wrong gradient check problem remains unsolved.
882      * New CPP options have been introduced for different
883        tapering schemes
884    o external_fields_load now part of differentiation list
885    o pressure needs multiple storing;
886      would be nice to have store_pressure at beginning or
887      end of forward_step, e.g. by having phiHyd global (5-dim.)
888      (NB: pressure is needed for certain cases in find_rho,
889      which is also invoked through convective_adjustment).
890    o recomputations in find_rho for cases
891     'JMD95'/'UNESCO' or 'MDJWF' are OK.
892    o #define ATMOSPHERIC_LOADING should be differentiable
893    o ini_forcing shifted to begining of initialise_varia
894    o Incorporating QNVS line search routines into MITgcm
895      (this is separate code, and therefore not under pkg)
896      lsopt/, optim/
897    o Updated verification/carbon/
898      - #define GM_VISBECK_VARIABLE_K
899      - GM_taper_scheme    = 'ldd97'    
900    
901    checkpoint46n_post
902    Merging from release1_p8:
903    o verification/natl_box:
904      updating new external_fields_load routine
905    o New package: pkg/seaice
906      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
907      The sea-ice code is based on Hibler (1979-1980).
908      Two sea-ice dynamic solvers, ADI and LSR, are included.
909      In addition to computing prognostic sea-ice variables and diagnosing
910      the forcing/external data fields that drive the ocean model,
911      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
912      The implied surface heat flux is then stored in variable
913      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
914      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
915      non-local transport term.  Because this call precedes model
916      thermodynamics, temperature under sea-ice may not be "exactly" at
917      the freezing point by the time theta is dumped or time-averaged.
918      N.B.: fairly large differences in accuracy occur across
919            different platforms/compilers; comparison between
920            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
921            generated output gives:
922       T           S           U           V
923      C D M    c        m  s        m  s        m  s        m  s
924      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
925      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
926      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
927    
928      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
929    o GAD:
930      - generated new common blocks to account for call of
931        same gad routines with differing traceridentities
932        (needed to modify tracerIdentity indices in GAD.h)
933      - generated separate common blocks for case useCubedSphereExchange
934        (Department of Futurology)
935      - parameter lists to gmredi_?transport: added tracerIdentity
936      - added new key indices to tamc.h
937    o external_fields_load:
938      - added this routine to TAF list
939      - needed to make some common blocks global and additional storing
940        along the same lines as exf package (checkpoint_lev?_directives.h)
941    o exf:
942      updated external forcing package
943      - bug fixes carried over from ecco-branch
944        (missing OBCS_OPTIONS.h in two routines)
945      - enable easy to use "no forcing".
946      - added exf I/O for atmospheric loading
947      - added exf I/O for runoff data
948      - transfered scaling between exf <-> MITgcm to exf namelist
949    o Adding new verification experiment global_with_exf.
950      This verification experiment is almost identical to the
951      global_ocean.90x40x15 experiment, except that it uses
952      the exf (and cal) package instead of the
953      external_fields_load routine (cf README file).
954    
955    checkpoint46m_post
956    o modified testscript to return -- when there are no lines of "%MON" output
957    o added new flag "quasiHydrostatic" for QH mode
958      and new routine quasihydrostaticterms()
959    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
960      New routine: mom_u_coriolis_nh()
961    o fixed sign of non-hydrostatic metric terms in u and v equations.
962      Depend on correct sign of gravitySign.
963    o added work.pc* to .cvsignore in aim directories using ifc
964    o introduced flag for controllin non-hydrostatic metric terms
965    o removed gravitySign from PARM04
966    o switched to g77/ifc from pgf77 in aim experiments
967    
968    checkpoint46l_post
969    o made convective adjustment work with pressure coordinates:
970     - changed the direction of k-loop in convective_adjustment.F for the
971       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
972     - adjusted the reference pressure k-index in convective_adjustment.F
973     - adjusted the convection condition in convect.F (in analogy to
974       calc_ivdc.F)
975     - convective_adjustment no longer computes anything on the halos
976     - removed the warnings about negative salinity from find_rho.F and
977       find_alpha.F; instead the new routine look_for_neg_salinity, called
978       at the beginning of find_rho, find_alpha, and find_beta, does a
979       check of the entire slice, if CPP-option
980       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
981    checkpoint46l_pre
982    
983    checkpoint46k_post
984    o fixed the verification/global_ocean.90x40x15 experiment:
985     - new bathymetry (the world according to A., JMC, and M.)
986     - new initial fields and forcing fields (*.bin files)
987     - new POLY3.COEFFS (for the next release one should switch to a full
988       equation of state: JMD95P or MDJWF)
989     - fixed several errors and redundancies in the data file
990     - experiment uses looped cells
991     - added matlab directory with diagnostic scripts for plotting of output
992    
993    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
994     - read AIM physics parameters from a file (data.aimphys)
995     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
996    
997    checkpoint46j_post
998    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
999    o move wVel computation at the end of the time step, in S/R integr_continuity
1000    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1001    o update timeave pkg for wVel diagnostic.
1002    checkpoint46j_pre
1003    
1004    checkpoint46i_post
1005    o Clean up AIM package (and keep the results unchanged):
1006      include CPP_OPTION and use IMPLICT NONE in all routines ;
1007      declare all the variables _RL ; use _d 0 for all numerical constants.
1008      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1009    
1010    checkpoint46h_post
1011    o cleaned up the use of rhoNil and rhoConst.
1012      - rhoNil should only appear in the LINEAR equation of state, everywhere
1013        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1014        and the dynamical equations are all divided by rhoConst
1015    o introduced new parameter rhoConstFresh, a reference density of fresh
1016      water, to remove the fresh water flux's dependence on rhoNil. The default
1017      value is 999.8 kg/m^3
1018    o cleanup up external_forcing.F and external_forcing_surf.F
1019      - can now be used by both OCEANIC and OCEANICP
1020    checkpoint46h_pre
1021    
1022     Added code to convert surface volume flux (fresh water) into
1023     a mass flux when using P coordinates in the ocean (OCEANICP).
1024     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1025    
1026    checkpoint46g_post
1027    o Include a new diagnostic variable phiHydLow for the ocean model
1028      - in z-coordinates, it is the bottom pressure anomaly
1029      - in p-coordinates, it is the sea surface elevation
1030      - in both cases, these variable have global drift, reflecting the mass
1031        drift in z-coordinates and the volume drift in p-coordinates
1032      - included time averaging for phiHydLow, be aware of the drift!
1033    o depth-dependent computation of Bo_surf for pressure coordinates
1034      in the ocean (buoyancyRelation='OCEANICP')
1035      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1036        Theta, Salinity, and Pressure in the parameter list. This routine is
1037        presently contained in find_rho.F. This routine does not give the
1038        correct density for 'POLY3', which would be a z-dependent reference
1039        density.
1040    o cleaned up find_rho
1041      - removed obsolete 'eqn' from the parameter list.
1042    o added two new verification experiments: gop and goz
1043      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1044    checkpoint46g_pre
1045    
1046    checkpoint46f_post
1047    o Enable tangent linear (forward mode) gradient checks:
1048      - extended active file handling to g_... files
1049      - added TANGENT_SIMULATION to theSimulationMode
1050      - extended grdchk package accordingly
1051    o added tangent linear setup in verification/carbon/code_ftl
1052    o added adjoint setup in verification/front_relax/code_ad
1053    
1054    checkpoint46e_post
1055    o Added new equation of state -> MDJWF
1056      - EOS of McDougall et al., 2002, JAOT, submitted
1057      - caveat: the equation of state is only valid for a smaller (more
1058        realistic?) range of values than JMD95P/Z and UNESCO
1059      - added masks to the calculation of pressure in store_pressure
1060      - added more check values for density in check_eos (ini_eos.F), some of
1061        the old check values are out of the range of the MDJWF-eos, so don't
1062        expect perfect matches for those
1063    checkpoint46e_pre
1064    
1065    checkpoint46d_post
1066    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1067      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1068      case of pressure coordinates. eosType='JMD95Z' in
1069      combination with buoyancyRelation='OCEANICP' now causes an error.
1070    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1071      in find_alpha/beta.
1072    checkpoint46d_pre
1073    
1074    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1075      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1076    
1077    checkpoint46c_post
1078    o Changes necessary for ocean in p-coordinates
1079     -  Added new buoyancy relation = 'OCEANICP'
1080     -  Added new parameters = gravitySign (this used to be contained inside
1081        the factor dRdZ which I added when we first switched to R coordinates).
1082     X GM/Redi is not compatible (yet)
1083     X bottom drag and no-slip need to be debugged.
1084    checkpoint46c_pre
1085    
1086    checkpoint46b_post
1087    o Added new equation of state -> JMD95Z and JMD95P
1088      - EOS of Jackett and McDougall, 1995, JAOT
1089      - moved all EOS parameters into EOS.h
1090      - new routines ini_eos.F, store_pressure.F
1091    o Added UNESCO EOS, but not recommended because it requires
1092      in-situ temperature (see JMD95)
1093    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1094      unesco.f to be used with POLY3
1095    checkpoint46b_pre
1096    
1097    checkpoint46a_post
1098    o Added (atmospheric) pressure loading
1099      - new field in FFIELDS.h, etc...
1100      - new cpp flag ATMOSPHERIC_LOADING
1101    o Changed hFacC to _hFacC in calc_phi_hyd.F
1102    o Added SHORTWAVE_HEATING to some files for consistency
1103    checkpoint46a_pre
1104    
1105    checkpoint46
1106    further merges from release1_p5
1107    o new ctrl package
1108      - adopted from ECCO environment to enable optimization
1109      - added Eliassen Palm fluxes to controls
1110    o added Eliassen Palm flux controls to gradient check package
1111    o cost package
1112      - Compatible with new ctrl package
1113      - added Eliassen Palm cost hooks
1114      - modif's of existing cost functions
1115    o Adjoint-related bug fixes in kpp:
1116      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1117      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1118    o autodiff package
1119      - flow directives:
1120        + new for S/R do_the_model_io
1121        + enhanced for S/R checkpoint
1122        + new gmredi.flow
1123      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1124        disable adcommon.h/g_common.h by default.
1125      - fixed problem for adjoint of global_max
1126    o modified verification/carbon/
1127    o New setup for adjoint of global_ocean
1128    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1129    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1130    o incorporated hooks for sponge layer code (external_forcing.F)
1131    
1132    checkpoint45d_post
1133    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1134    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1135      (affects plume_on_slope "cg2d" output)
1136    o add new parameter deltaTfreesurf for free-surface time stepping
1137    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1138    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1139    o change phiMin in exp1 (to agree with documentation)
1140    o add new flags:
1141     - T,S forcing inside/outside Adams-Bashforth
1142     - turn off temp,salt advection and/or forcing
1143     - for each tracer, define internal flag for multiDimAdvection & A-B
1144    o monitor: change definition of KE to check conservation of Energy
1145    
1146    checkpoint45c_post
1147    o Removed f90 comments ("!")
1148    o Modified initialisations to enable exf package for MITgcm
1149      (without invoking ECCO_PACKAGE).
1150    o modifications to gradient check package (Martin Losch)
1151      - enable centered differences
1152      - modified format of standard output
1153    
1154    checkpoint45b_post
1155    o cleaned exchange calls in cg2d
1156    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1157    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1158      to configure barotropic setup (Martin Losch)
1159    o moved some initialisations within bi,bj loop in dynamics
1160      (TAF flow dependency)
1161    o in initialise_varia, moved call packages_init_variables
1162      before convective_adjustment_init
1163      (corresponding adjustment of TAF tape initialisation).
1164    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1165    
1166    checkpoint45a_post
1167    o compute Rho over the whole domain (extend iMin,jMin indices)
1168    o specific exchange for X-slice domain (case Ny=1)
1169    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1170    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1171    
1172    checkpoint44h_post = checkpoint45
1173    o Fix to restore differentiability:
1174      place at which packages_init_variables is called in
1175      initialise_varia is crucial for reverse control flow.
1176    o modifications in GMRedi to enable stable adjoint
1177      (corresponding modif's in thermodynamics, dynamics)
1178    o added missing hook for sponge layer code in external_forcing
1179    o modified test cost functions
1180    o storing in gad_advection (plus removal of write(0,*)!
1181    o missing headers TR1.h added in convective_adjustment routines
1182    o errorMessageUnit set non-equal zero in eeboot
1183      (conflict on some platforms, e.g. IBM SP3)
1184    o modified carbon verif.
1185    
1186    checkpoint44h_pre
1187    o vertical grid option: allow to put the Interface at the middle between
1188      2 cell-centers ; replace delZ in pkg/kpp by drF.
1189    o GM Advective form: Tracers are advected using the residual transport (=
1190      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1191    
1192    checkpoint44g_post
1193    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1194      results) ; ifdef missing in thermodynamics.F
1195    
1196    checkpoint44f_pre,checkpoint44f_post
1197    o added PTRACERS package
1198      This allows an arbitrary number of passive tracers to be integrated
1199      forward simultaneously with the dynamicaly model.
1200      + Implemented so far:
1201        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1202        - I/O and checkpointing
1203        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1204      + Not implemented so far:
1205        - KPP
1206        - OBCS
1207      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1208        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1209        line in data.pkg.
1210      + This package is disabled by default since it increases storage.
1211    
1212    
1213    o testscript: added -cleanup option
1214    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1215                 b) enable to filter 2D fields.
1216    
1217    checkpoint44e_pre,post
1218    o re-wrote convective adjustment to use pre-calculated weights
1219      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1220      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1221      Original calls to convect() still in place.
1222    
1223    chkpt44d_pre,post
1224    o added missing EXCLUDE_MONITOR flags
1225    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1226      (incompatible typ in MIN/MAX expressions caused problems
1227      on IBM SP3)
1228    o in genmake added variable MAKEDEPEND
1229      plus resetting for case SunOS
1230    o added timer_stats.c routine for IBM SP3
1231    o removed variables in dynamics
1232    !!! I forgot to create tag chkpt44d_pre !!!
1233    !!! But chkpt44d_pre = chkpt44c_post    !!!
1234    
1235    o real fresh water flux implemented with non-linear free-surface.
1236    
1237    chkpt44c_pre,post
1238    o few fix (mask in shap_s2, EmPmR in external_field_load,
1239      USE_NATURAL_BCS in solve_for_P);
1240    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1241    
1242    checkpoint44b_pre/_post
1243    o merge of relevant stuff from the ecco-branch:
1244      - genmake: removed $S64 overwrite for case SunOS
1245      - pkg/exf: update and corrections for field swapping and obcs
1246      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1247                  harmonized between ECCO and MITgcm
1248      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1249                      updated checkpointing_lev... lists for obcs
1250      - model/src: minor changes in forward_step, plot_field
1251                   added directive for divided adjoint in the_main_loop
1252      - pkg/mdsio: added mdsio_gl_slice
1253    
1254    o check parameters & config (chkpt44a_pre,post)
1255    o OBC and NonLin_FrSurf.
1256    
1257    checkpoint44
1258    o fix bug in mom_vi_del2uv
1259    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1260    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1261    o update AIM experiments (NCEP input files)
1262    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1263    o added some stuff for AD
1264    
1265    checkpoint43
1266    o added two new advection tests
1267    o added global 4x4 degree ocean test
1268    o added test of H&S94 with free surface on cube
1269    o some final mods for gradient check, adjoint,...
1270    
1271    checkpoint42
1272      Fixed AD-related problems:
1273    o Store directives up-to-date with re-arranged Adams-Bashforth
1274      (mainly thermodynamics.F)
1275    o New store directives for multi-dim. advection schemes
1276      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1277      * new common block and key passkey
1278      (mainly gad_advection.F)
1279    o Modified store directives for split of dynamics/thermodynamics
1280      for the case ALLOW_KPP
1281    o Cleaned argument list for timestep_tracer.F
1282    
1283    checkpoint41
1284    o re-formatted/added comments in prologues of key subroutines
1285      to work with protex
1286    
1287    checkpoint40
1288    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1289    o added FLT (floats) package from Arne along with demo. experiment
1290    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1291      implementation of forward-in-time forcing terms
1292    o more mods for non-linear free-surface including new variable
1293    o modified multi-dim method to work on cube
1294    o bug fix in KPP (from DM)
1295    
1296    checkpoint40pre9
1297    o added DST advection schemes
1298    o fix MPI bug on SGI's
1299    o modifications for non-linear free-surface
1300    o fixed conditionals for fixed flow/passive tracer only mode
1301    o added tension/strain form of stress tensor
1302    o changes to commenting of arguments for TAF/TAMC
1303    o added/updated many matlab scripts
1304    o added multi-dimensional advection method for tracers
1305      
1306    checkpoint40pre8
1307    o new package rw/
1308      Added method for dumping intermediate local arrays:
1309      mdsio_writetile - same as mdsio_writefield except works from inside
1310                        bi,bj loop
1311      mdsio_writelocal - same as mdsio_writetile except works for local
1312                         arrays
1313      write_local_r? - higher-level wrapper for mdsio_writelocal
1314      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1315      Example given at end of mom_vecinv.F that dumps some local arrays.
1316    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1317      control flux-form versus vector invariant code.
1318      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1319      or genmake -DISABLE ...
1320    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1321      (additional storing is now needed for case vecinv;
1322      currently nothing implemented to switch this storing off
1323      in case fluxform is used since no CPP flag available).
1324    
1325    checkpoint40pre7
1326    o bug fix in dynamics.F
1327      calc_viscosity called before k=1,Nr loop.
1328    o added some #ifdef's ALLOW_PASSIVE_TRACER
1329    o cleaned initialisations in ctrl_map_ini
1330      related to TAF
1331    
1332    checkpoint40pre6
1333    o split dynamics into thermodynamics & dynamics
1334    o corresponding split of calc_diffusivity into
1335      calc_diffusivity, calc_viscosity
1336      (kpp_calc_diff, kpp_calc_visc).
1337    o Added diffkr, kapgm to control variables
1338    o bug fix in gmredi_slope_limit for ldd97
1339    
1340    checkpoint40pre5
1341    o proper initialization of Adams-Bashforth time stepping
1342      + uses forward step for very first step of model (iter=0)
1343    o re-generated *all* output since almost all output is modified by this
1344      change (sorry but we've been putting this one off for about 2 years)
1345      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1346        *not* regenerated since they are already out of date and I don't
1347        want to create the impression that they are suddenly working.
1348    o removed KAP stuff for DEC's
1349    o modified/added many .cvsignore files in */code and */input
1350    o added new expt "solid-body.cs-32x32x1"
1351      + this uses an alternative form of ini_curvilinear_grid.F which
1352        is not necessarily any better than the current one...
1353    
1354    checkpoint40pre4
1355    o added re-initialisations of utrans,vtrans,rtrans in
1356      calc_common_factors which are crucial for TAF.
1357    o extended iMin,jMin range for calc_common_factors,
1358      calc_diffusivity
1359    o added option ALLOW_PASSIVE_TRACER
1360    o a few minor updates and fixes
1361    
1362    checkpoint40pre3
1363    o created calc_gtr1.F for gad package
1364    o split the_main_loop and re-introduced forward_step
1365    o some recomputations of nIter0 for TAMC
1366    
1367    checkpoint40pre2
1368    o Updated to latest branch of AJA, JMC
1369    o Added gradient check package
1370    o Added routines for passive tracer handling
1371    o Added carbon sequestration sensitivity experiment
1372    
1373    checkpoint39
1374     o Modifications and fixes to support TAMC
1375       (mainly missing or wrong directives)
1376     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1377       in addummy_in_stepping
1378     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1379     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1380     o Included following packages:
1381       cal: calendar
1382       exf: external forcing
1383       ecco: essential routines to control use of cal, exf
1384             (NB: this is not the full ECCO environment)
1385     o disabled some packages by default in genmake
1386    
1387    checkpoint38
1388     o see notes_c37_adj.txt
1389     o corrected wrong layer index in external_forcing_t
1390     o replaced the_main_loop/forward_step by the_main_loop
1391     o removed forceoutput from write_state
1392       (replaced criteria for initial/final state)
1393     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1394    
1395    checkpoint37
1396     o mdsio.F routine split and packaged in pkg/mdsio
1397       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1398        used unless genmake -disable=mdsio)
1399     o allow a more precise surface-geopotential gradient for the atmosphere
1400       taking into account the change in space of Alpha (=1/rho) at the surface.
1401     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1402       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1403     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1404       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1405       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1406     o Time-Average diagnostics defined as a pseudo package "timeave".
1407     o pickup files : old pickup (before c35) did not work with new code (c35
1408       and after) unless activating 2 commented lines in initialise-varia.
1409     o Non-Hydrostatic pickup file Pb fixed.
1410     o bug with Rigid-lid version (since c35) fixed.  
1411    
1412    checkpoint36
1413     o implement Crank-Nickelson barotropic time-stepping
1414     o recover Time-Average diagnostics
1415     o fix Pb in checkpoint (PR#19)
1416     o AIM become a standard package ; clean unused CPP_kees
1417    
1418    checkpoint35
1419     o subtantial rewrite of dynamics.f
1420     o allows staggered time-stepping
1421     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1422     o added bottom drag (linear + quadratic)
1423    
1424    checkpoint34
1425     o Modified exchange routines for correct reverse simulation.
1426     o Added verification output to comply with bug fix in impldiff.F
1427       as of c33 (exp2, natl_box).
1428     o Corrected store directives in dynamics.F
1429     o Corrected array boundaries in impldiff.F
1430     o Corrected array dimensions in gmredi.
1431       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1432     o Added routine GLOBAL_SUM_INT to global_sum.F
1433     o Added mdsio_gl.F for ECCO purposes.
1434    
1435    checkpoint33
1436     o Fixed bug in lower BC in impldiff.F
1437     o Fixed confusion about units of forcing arrays in FFIELDS.h
1438       namely Fu,Fv,Qnet,Qsw,EmPmR:
1439       - Removed verification/natl_box/code/external_fields_scale.F
1440         (did not differ from that in model/src)
1441       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1442         (see FFIELDS.h for description)
1443       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1444         kpp_calc.F and kpp_transport_t.F
1445       - Removed model/src/external_fields_scale.F and calls to it
1446       - verification/natl_box uses flux data with "atmospheric" sign so
1447         a special version of external_fields_load.F is used to
1448         change the data as it's read in. This way, the arrays
1449         have the right units and signs at all times tha a user could
1450         possibly use them.
1451     o Corrected genmake to delete a temporary file during configuration
1452    
1453    checkpoint32
1454     o Scaling of forcing fields moved from external_forcing.F to
1455       external_fields_scale.F, called directly after loading fields.
1456     o Surface relaxation terms added to surface tendency fields in
1457       extra subroutine.
1458     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1459       fields.
1460     o Changes in GMRedi to comply with packaging structure.
1461     o Modifications and bug fixes in KPP package.
1462     o Verification experiment for KPP added (verification/nat_box/)
1463    
1464    checkpoint31
1465     o Packages interface brought in line with defined standard
1466       -> new routines packages_...F
1467       -> changes in initialise_fixed.F, initialise_varia.F
1468       -> enables initialisation interface for ECCO package
1469     o Rescaling of external forcing fields immediately after read
1470       (removed from external_forcing.F)
1471       -> new: surface_fields_scale.F
1472       -> affects ini_foorcing.F, external_fields_load.F
1473     o Computation of surface tendencies before tendency updates.
1474       -> new: external_forcing_surf.F
1475     o Change of variable names useGMRedi, useKPP, useECCO
1476     o Further changes in dynamics.F, impldiff.F for TAMC
1477     o Tested for experiments 0, 2, 4.
1478       - not yet tested for GMRedi.
1479       - not yet tested for KPP.
1480    
1481    checkpoint30
1482     o Updates for OBCs
1483     o New experiment for test OBCs (internal_wave)
1484     o New output.txt in verification/exp4/results/
1485     o Updates for KPP: calculation of viscosity corrected, new variables
1486       kpp_dumpFreq and kpp_taveFreq
1487     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1488       and entry for T90 in genmake
1489    
1490    checkpoint29
1491     o packaged KPP and GM/Redi
1492    
1493    checkpoint28
1494     o Corrected initialization of hFacMin for difference vertical coordinates
1495     o Modified calculation of partial cell thickness to more robust algorithm
1496     o config_summary.F: replaced write_1D_... by write_0D_...
1497       read_write.F: added subroutines write_0D_...
1498     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1499       included some initialisations required for TAMC.
1500     o routine calc_isoslopes: modified sqrt computation to make it
1501       differentiable for zero argument.
1502     o routines dynamics, impldiff:
1503       included store directives and tape key computations required for TAMC.
1504     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1505    
1506    checkpoint27
1507     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1508       formulation works properly with variable resolution.
1509     o restructured the calling tree between the_model_main() and dynamics()
1510     o split initialise() into initialise_fixed() and initialise_varia()
1511     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1512       in new routine ini_psurf()
1513    
1514    checkpoint26
1515     o moved some #ifdef in optional routines to encompass everything
1516       except the argument declarations. This was using up some memory.
1517     o fixed macros like _ADT to work with both versions of Linux cpp
1518     o cleaned up some unused and uninitialized variables
1519       (helps when debugging with strict compile options)
1520     o split up CPP_EEOPTIONS.h into options and macros
1521       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1522     o patch for 2 processor JAM mode
1523    
1524    checkpoint25
1525     o updates for OBCs and NH
1526     o dramatically reduced memory usage
1527     o added "JAM" routines for use on Artic network
1528     o parameterization of convection by implicit vertical diffusion
1529     o added a diagnostic of convective index
1530     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1531       (this is was partly for OBCs and NH but also in anticipation of
1532        an explicit free-surface option)
1533     o initial state input files for U and V
1534    
1535    checkpoint24
1536     o Removed some spurious "REAL"s
1537     o Updated KPP to latest version from JPL
1538     o Added a COS(latitude) in horizontal viscosity
1539    
1540    checkpoint23
1541     o Added del^4 diffusion for salt and temperature
1542     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1543    
1544    checkpoint22
1545     o Made many small changes: implicit none, format(i5), etc...
1546     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1547    
1548    checkpoint21
1549     o Introduced new I/O package that supports direct-access records (mdsio.F)
1550     o Split-up mid-level I/O routines
1551     o Updated input data for experiments 0,1,2,4 and 5
1552     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1553    
1554    checkpoint20
1555     o Tidied up open-boundaries some more
1556     o Added non-hydrostatic code
1557     o Fixed some input data
1558     o Modified MPI start-up to work in "coupled" context.
1559    
1560    checkpoint19
1561     o Tidied up directory structure for verification experiments.
1562     o Added new code for open boundaries.
1563     o Corrected advective terms near boundaries.
1564     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1565     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1566     o Split default parameters out of ini_parms.F into set_defaults.F.
1567    
1568    checkpoint18
1569     o Further changes for optional code generation with
1570       CPP - ugh!
1571    
1572    checkpoint17
1573     o Beginning to incorporating modularity
1574       for supporting atmos. and ocean configs.
1575     o Small changes for TAMC complinace
1576     o New ultra simple test case. Barotropic box
1577       configuration "exp0".
1578    
1579    checkpoint16
1580     o Minor changes to exchange routines to support
1581       accumulation in reverse mode. Adjoint of an
1582       assignment is an addition.
1583     o Changes to support compilation by TAMC (LR(1)
1584       syntax) and by g77 under Linux ( 72 character
1585       limit ).
1586    
1587    checkpoint15
1588     Rewrote exchange routines to allow
1589     o General tile <-> tile connectivity.
1590     o TAMC reverse mode flag ( is this really needed? )
1591     o Variable width overlap and exchange region widths.
1592     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1593       shmput/shmget, VIA, SYSV shmem and every other cool
1594       communication method.
1595    
1596    checkpoint14
1597     Consistent isomorphism chages made. These allow dynamical core
1598     to support both pressure and meters as a vertical coordinate.
1599    
1600    checkpoint13
1601     Release which corrects global_max problem and a couple
1602     of KGM time-averaging diagnostic errors. Also contains
1603     a double-gyre experiment setup as well as the baseline
1604     4 degree global template. The double gyre template is
1605     organised to allow it to be applied automatically to
1606     the baseline configuration.
1607    
1608    branch-point-rdot
1609     A few tidy-ups have been made bt the real point of this
1610     check-point (excuse the pun) is to allow a branch to be
1611     made for the purposes of adding the rDot alterations.
1612     I don't want to commit the rDot to the main-trunk until
1613     we've actually tested it...
1614    
1615    checkpoint12
1616     Tidy up and added generic genmake script (formerly
1617     configure script).
1618     Released to testers.
1619    
1620    checkpoint11
1621     Re-arranged initialise() and introduced ini_vertical_grid()
1622     and ini_masks_etc().
1623    
1624  checkpoint10  checkpoint10
1625   Introduced the configure script.   Introduced the configure script.
1626   Separated out the diags package.   Separated out the diags package.

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