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revision 1.2 by cnh, Sat May 30 02:19:49 1998 UTC revision 1.279 by jmc, Sun Apr 18 22:31:33 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 fix in pkg/thsice:
7      - update Evap (Tsf changes) to be consistent with Latent heat flux
8      - maintain snow precipitation unchanged (even if Tsf >=0).
9     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
10    
11    checkpoint52m_post
12    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
13      this does not change any of the results, because myIter=0 in swfrac always
14      lead to jwtype=2 (the default anyway), but the call makes little sense
15      as a default
16    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
17    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
18      atmospheric model (AIM) to use it ; add a "slab ocean" component.
19    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
20    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
21    o extending useSingleCpuIO option to work with new exch2 I/O format
22      - old-style, missing-tile I/O is still accessible by defining CPP
23        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
24    o monitor package can write to NetCDF files and/or STDOUT
25    o fix re-definition bug in MNC_GRID_INIT_ALL()
26    o doc/api_reference added
27      - a framework for building an API Reference Manual using all
28        the "protex" comments embedded in the code
29      - see pkg/generic_advdiff, pkg/mnc for examples
30    o MNC:
31      - make myThid the last argument for all subroutines
32      - new default for the grid files: NO halos
33      - add useMNC and other run-time flags
34      - separate per-file-group handling of the unlimited dimension
35      - early initialization of MNC w/ flags read at the eeboot stage
36        and lookup tables set in initialize_fixed
37      - write all MNC output to a freshly-created directory
38    o thermodynamics sea-ice (thsice) is now tested with testreport.
39    o test exp. advect_cs: use the standard cs32 grid ; update output.
40    o Added functionality to grdchk:
41      pick global i,j,k position (or nearest wet) where to perform check.
42    
43    checkpoint52l_post
44    o new land formulation:
45      a) use ground enthalpy as prognostic variable to ensure exact
46         energy conservation.
47      b) account for water temperature and for latent heat of freezing
48         in all processes (rain, run-off, ground storage)
49      c) compute surface and ground temperature implicitly.
50    o aim_v23 modification for new land model:
51      a) Treat separately land / ocean / sea-ice surface fluxes
52         to allow implicit computation of land & sea-ice surface temp.
53      b) add snow precipitation.
54    checkpoint52l_pre
55    
56    o fix problem (when 1 tile is empty) in min/max monitor.
57    o fix bug in timeAve (u,vZetatave in common block)
58    o no restoring terms under ice for pkg/seaice
59    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
60    o bug fix for pkg/seaice pickups
61    o change MNC call locations and add coordinate attributes
62    o mask vorticity at the corner ; affects global_ocean.cs output
63    o fix ini_curvilinear_grid ; test CS experiments with mpi
64    o aim.5l_cs: modify sea-ice fraction input file ; update output
65    o exf: Adding simple range check routine for exf fields after read
66    
67    checkpoint52k_post
68    o removed top-level directory "diags"
69      - we migrated these functions to pkg/timeave a long time ago
70    o fixed bug introduced in pkg/monitor
71    o accuracy ctrlprec = 32 insuffient for gradient checks using
72      averaged fields (I/O via cost_averages)
73      -> use ctrl.h in active_file*.F to control I/O precision.
74    o paramter list of CALL ADTHE_MAIN_LOOP
75    o added initial do_the_model_io to ecco
76    o set all ...Freq to zero after cost_final
77      taveFreq, dumpFreq, pChkptFreq
78    o MAIN and ECCO differentiability restored
79    
80    checkpoint52j_post
81    o fix nchklev in tamc.h for global_ocean...
82    o Bringing flow and store directives up-to-date
83    o Really weird thing!
84      call do_the_model_io from the_main_loop with parameters
85      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
86      TAF places a faulty re-call of initialise_varia
87      after cost_final call which should not be there!
88    checkpoint52j_pre
89    
90    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
91      error messages
92    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
93    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
94      debug output
95    o modfied mdsio_writefield.F to handle non-global files under exch2
96    o update AIM Cubed-Sphere exp (aim.5l_cs):
97      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
98    o update AIM Equatorial Channel exp:
99      use standard aim_v23 pkg and change the SST fields to be more realistic.
100    o globalFile now works with exch2
101    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
102      mon_vort3.F to make exch2 friendly with >1 tile per cube face
103    o limit timeave output for hi-res integrations
104    
105    checkpoint52i_post
106    o removed CPP_EEOPTIONS.h from verification/*/code
107    o updated the tiling for global_ocean_pressure
108    checkpoint52i_pre
109    
110    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
111      the old pkg/aim).
112    
113    checkpoint52h_pre
114    o shortened offending lines in exch2_send_rx?.template
115    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
116    o genmake2: add build & execute test for NetCDF code
117    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
118      old grid files, moved CPP_EEMACROS.h to pkg/exch2
119    o added useSingleCPUIO flag to monitor.F and mon_out.F
120    o added temporary hack for sea-ice dynamics on the cube:
121      metric terms are ignored and it is assumed that
122      there is no sea-ice on cube faces 1, 2, 4, and 5.
123    
124    checkpoint52f_post
125    o added exch2 cube routines to pkg/exch2
126    o modified hs94.cs-32x32x5 to use it
127    o added new grid files to hs94.cs-32x32x5
128    checkpoint52f_pre
129    
130    checkpoint52e_post
131    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
132      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
133    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
134      to work with implicit vertical advection and AB ;
135    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
136    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
137     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
138    checkpoint52e_pre
139    
140    o fix bug in impldiff when Nr=1 or Nr=2.
141    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
142    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
143    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
144      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
145    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
146    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
147    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
148    
149    checkpoint52d_post
150    o re-tiled many expts to allow comparison in multi-processor mode
151      - updated output accordingly
152      - changed hs94.128x64x5 to use intial T from file rather than use the
153        random number generator
154    o add infrastructure in model routines for fizhi and gridalt packages
155    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
156    o changes to permit hi-res, cubed-sphere, configuration
157      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
158      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
159      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
160        of surface winds for the cube
161      (A verification experiment, based on global_ocean.cs32x15, but with
162       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
163       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
164       complete with example surface forcing files and matlab scripts to look
165       at the output and compare it with that of global_ocean.cs32x15.)
166    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
167       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
168       to conform to the common rule.
169    o check-in the first version of the coupler + interfaces for multi-components
170       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
171       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
172       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
173       - ocean and atmos. share the same horizontal grid (no interpolation).
174       - exchanges between component and coupler is done in forward_step
175    o new verification experiment, cpl_aim+ocn:
176       coupled ocean - AIM atmosphere on cs32 grid.
177    
178    checkpoint52d_pre
179    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
180    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
181    
182    checkpoint52c_post
183    o Fixing OPTIONS files for use of exf:
184      - ALLOW_ECCO not needed
185      - ECCO_CPPOPTIONS.h should not be included from
186        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
187        as has been the case in the past
188      - All cal/exf related options are currently set in
189        single header file. Should remain so until we
190        agree on a consistent new policy.
191    o Removed all CPP options for cal package.
192      cal has no more CPP options.
193    o modified STOREs in GAD_ADVECTION
194    o corrected key comp. for passkey
195    
196    checkpoint52b_post
197    o new version: "thsice" of thermodynamic sea-ice pkg:
198     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
199     - modify fluxes but do not change theta directly;
200     - light cleaning of bulk_force pkg (still needed with thsice).
201     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
202       + output_thsice.txt to test thsice & bulk_force pkgs.
203    o put back grid & coriolis monitor output.
204    checkpoint52b_pre
205    
206    o call "do_the_model_io" at the beginning (=> dump initial state)
207    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
208    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
209      (need info on NUMBER_OF_PTRACERS)
210    o missing PTRACERS headers in some routines
211    o default tamc.h in pkg/autodiff supposed to crash
212      to ensure proper customization
213    
214    checkpoint52a_post
215    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
216      - moved surfaceTendencyTice from pkg/seaice to main code
217      - subroutine FREEZE_SURFACE now limits only surface temperature
218        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
219        => new output.txt for global_ocean.cs32x15 & global_with_exf
220      - keep the old version of FREEZE for backward compatibility;
221        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
222      - corresponding modifs for TAF directives
223    o added surface flux output variables to TIMEAVE_STATVARS
224    o time-averaged output for pkg/ptracers
225    o fix problem with ECCO-related divided adjoint
226      snapshot file was missing some ad-variables,
227      but no warning issued by TAF
228    
229    checkpoint52a_pre
230    o some bug fixes for #undef REAL4_IS_SLOW
231    
232    checkpoint52 = ecco_c52_e35
233    o after testing adjoints of checkpoint51u_post
234    
235    checkpoint51u_post
236    o this is the post-merge tag of the ecco-branch
237      (needs another clean checkout and re-testing)
238    o various natl_box_adjoint configs and results
239      but no input fields
240    o obcs adjoint not yet merged!
241    o adding ECCO global 1x1 and 2x2 degree configs
242    o updated/extended some store directives for seaice
243    o pkg/ecco now containes ecco-specific part of cost function
244    o top level routines the_main_loop, forward_step
245      supersede those in model/src/
246      previous input data.cost now in data.ecco
247      (new namelist ecco_cost_nml)
248    o in ctrl/ cleaned some cross-dependencies and updated CPP options
249    
250    checkpoint51t_post
251    o this is the pre-merge tag of the ecco-branch
252    
253    checkpoint51s_post
254    o cleanup: removed various obsolete #define-s
255    o pkg/grdchk
256      - renamed 'ph-grd 3' to 'grad-res'
257      - merged from ecco-branch
258        (remaining bug fixes for obcs gradient checks)
259      - additional high-precision output for testreport
260        (grep for 'precision_grdchk_result')
261    
262    checkpoint51r_post
263    o cleaned up or removed CPP_OPTIONS.h files
264    o updated results for some of the tests to reflect the new
265      optfiles (-ieee: -O0 instead of -O3)
266    
267    checkpoint51q_post
268    o cd_code:
269      - moved cd_scheme.F -> cd_code_scheme.F
270      - separate read_checkpoint from cd_code_ini_vars.F
271      - separated cd_code part from write_checkpoint
272      - updated AD_SOURCE, generated .flow
273      - added CD_CODE_VARS.h to the_main_loop
274      - Moving cd_code specific store dir.s to pkg/cd_code
275    o ctrl package totally restructured
276      - pack/unpack now optional and decoupled from
277        xx_/adxx_ I/O
278      - ctrl_pack/unpack cleaned
279        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
280      - confined inclusion of AD_CONFIG.h to where necessary.
281    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
282    
283    checkpoint51p_post
284    o create initial cd_code package
285      - WARNING: the initialization of fields within packages
286        is broken because INI_FIELDS (where READ_CHECKPOINT is
287        called) is called *before* PACKAGES_INIT_VARIABLES.
288        This seems to be backwards since
289        1) its important to initially zero the entire field including
290           the "halo" region
291        2) zeroing needs to be done *before* reading pickup info
292           and the pickup call might or might not happen in any
293           particular run
294      - this needs an overhaul for R2
295    o cleanup verification/*/code/GMREDI_OPTIONS.h
296    o cleanup testreport
297    
298    checkpoint51o_post
299    o bringing AD-related verif's up to date with genmake2
300      - carbon/
301      - global_ocean.90x40x15/
302      - hs.94.1x64x5/
303      - (front_relax/ )
304    o (more) consistent directory structure for AD-related verif.'s
305    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
306    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
307    o bug fix in find_alpha.F for MDJWF:
308      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
309        change rho -> rho-rhoConst
310      - replace call find_rho to find_rhonum
311    o initialisation of rFlx extended to full array (required by TAF)
312      and shifted to thermodynamics
313    o removed PTRACERS.h in ptracers routine
314    o added surfacetendencyPtr to S/R parameter list pracers_forcing
315    o Correcting initialisations for fVerU, fVerV.
316    o helping TAF to recognize dependency on kUp for
317      fVerU, fVerV
318    o Replacing delZ by delR in pkg/ctrl/
319    checkpoint51o_pre
320    
321    o undid all of cp51 pending some cleanups and discussion
322    o added the [#include "AD_CONFIG.h"] statement to all files that need
323       it for adjoint/tl #defines
324     o re-worked the build logic in genmake2 to support AD_CONFIG.h
325     o removed tools/genmake since it no longer works
326    
327    checkpoint51n_post
328    o modifications to make FREEZE flux visible to pkg/kpp
329      - moved surfaceTendencyTice from pkg/seaice to main code
330      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
331      - subroutine FREEZE now limits only surface temperature
332        (this means new output.txt for global_ocean.90x40x15,
333         global_ocean.cs32x15, and global_with_exf)
334    o added surface flux output variables to TIMEAVE_STATVARS
335    
336    checkpoint51n_pre
337    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
338    o added [#include "AD_CONFIG.h"] to all files that use the following
339      defines:
340      - ALLOW_ADJOINT_RUN
341      - ALLOW_TANGENTLINEAR_RUN
342      - ALLOW_ECCO_OPTIMIZATION
343    
344    checkpoint51m_post
345    o incorporating changes to get TAMC/TAF working in genmake2
346      - added new TAMC/TAF targets to the Makefile
347      - various cleanups related to package handling
348      - these changes should have no impact on the forward model
349    
350    checkpoint51l_post
351    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
352     - faster algorithm for cal_addtime.F
353     - higher precision arithmetic, where needed
354     - pkg/exf *startdate variables changed from calendar date to
355       model integration time
356    
357    checkpoint51l_pre
358    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
359    o enable to apply restoring on S & T only in a latitude band.
360    o update output (external_forcing_surf modif. change truncation errors)
361       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
362    
363    checkpoint51k_post
364    o change default to: useNHMTerms=.FALSE.
365     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
366       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
367     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
368        exp1, ideal_2D_oce
369     - change data file of oceanic exp (leave the results unchanged for now)
370       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
371    o set gravitySign automatically according to the vertical coordinate used
372      (and change sign: back to "logical" value: +1 when R increases downward)
373    o added an include barrier to the default CPP_OPTIONS.h and
374      removed the #include "PACKAGES_CONFIG.h" from it
375    o fix a bug in mom_fluxform (from chk51j_post)
376    
377    checkpoint51j_post
378    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
379    o adjusted some flow directives (dynamics, thermodynamics)
380    o added cubed-sphere case to test cost function
381    o heckpoint_lev?_directives.h now include
382      pkg-specific directives, whenever those are enabled.
383    o Moving pkg-specific flow directives to corresponding pkg
384      Moving pkg-specific differentiation list to corresponding pkg
385      Moving pkg-specific checkpoint-lev storing to corresponding pkg
386      ---> conventions are
387           - pkg_ad.flow
388           - pkg_ad_diff.list
389           - pkg_ad_check_lev?_dir.h
390    
391    checkpoint51i_post
392    o merge of the branch-genmake2
393      - knowingly breaks the older genmake
394      - automatic generation of all ALLOW_${PKG_NAME} defines
395      - new testreport supersedes older testscript
396    o large number of package inclusion and header cleanups
397    checkpoint51i_pre
398    
399    o new output for adjoin of global ocean vector invariant
400    o fix for checkpoint of thermodynamic seaice and bulk_force
401    o Steph gchem various cleanups
402    
403    checkpoint 51h_pre
404    o fixed some single quotes
405    o modify gchem pkg to be more versatile
406    o modifications to clean up dic pkg
407    o add pkg/cfc
408    
409    checkpoint51g_post
410    o provide links for ARPACK and ADM*TLM
411    o start removing verification/vero/
412    o update AD-related stuff
413      (in particular some IF-statements in model/src/ routines)
414    o adding to verification/global_ocean.90x40x15/ adjoint of
415      vector invariant setup
416    
417    checkpoint51f_post
418    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
419    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
420      of tracer Green's fucntions for ocean inversion project.
421    
422    checkpoint51f_pre
423    o Added on-the-fly spatial interpolation capability
424        "USE_EXF_INTERPOLATION" to pkg/exf.
425      - This is a temporary Cartesian-grid hack until
426        the super-duper ESMF coupler becomes available.
427      - See verification/global_with_exf/README for usage example.
428      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
429        flags and modified pkg/seaice accordingly.
430    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
431        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
432        non-local transport term.
433    
434    checkpoint51e_post
435    o pkg/mom_vecinv:
436      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
437      - add time-ave diagnostic of vorticity advection.
438    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
439    o atmospheric geopotential: - include water vapor effect;
440                                - use p^kappa in p* scaling.
441    o land pkg: read initial state from files.
442    o AIM : add stratospheric drag in the upper level
443    
444    checkpoint51d_post
445    o change function ILNBLNK (=> last non-blank char.) to return zero
446      (instead of the string length) when the string. char is empty
447    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
448    o modif's to restore TAMC compatibility
449      - avoid "_d" constructs in PARAMETER declarations
450      - avoid interrupting lines by comment lines
451    o Use cluster local disks for purely local I/O
452      vs. globally visible disks needed for ctrl stuff
453      (merged from ecco-branch)
454      - new active_file_loc... and mdsio_..._loc routines
455      - affected packages: autodiff, ctrl, grdchk, mdsio
456    
457    checkpoint51c_post
458    o introducing integer flag debugLevel
459      - debLevZero: suppress all output
460      - debLevA: standard
461      - debLevB: equivalent to current debugMode=.TRUE.
462    o introducing pathname variable mdsioLocalDir for mdsio
463      that can be specified at runtime
464      (relevant for cluster I/O to local disk)
465    `
466    >>>checkpoint51b_post
467    adjoint of ptracers
468    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
469    o extended state in checkpoint_lev?, etc.
470    o alternative ctrl/cost with tr1 or ptracer
471    o new comlev1_bibj_ptracers
472    o new ptracers.flow
473    o made ptracers_forcing same as external_forcing_s
474    o added verification for adjoint with ptracers
475      - adm. grdchk fail so far
476      - tlm. grdchk OK
477      - checked tapelev/comlev recomputations: OK
478    <<<checkpoint51b_pre
479    
480    checkpoint51a_post
481    o added code for biogeochemistry package
482      - new pkgs: dic, gchem
483      - new subroutine in ptracers
484    o modify code for biogeo packages
485      - in model/src and pkg/ptracers
486    
487    checkpoint51
488    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
489      - autodiff, ctrl, exf, grdchk, seaice
490      kept separate packages
491      - cost, ecco, obcs
492    o updating verification/internal_wave, verification/lab_sea
493      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
494    
495    checkpoint50i_post
496    o Preparing next differentiable checkpoint and sync
497      of MAIN vs. ecco-branch
498      - 1st step: this one is differentiable
499      - 2nd step: next(! not this) checkpoint will have updated packages
500                  from ecco-branch)
501    
502    checkpoint50h_post
503    o new package "land": provide surface BC for AIM.
504    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
505    o AIM: use true log-P extrapolation for near surface temp (= as in
506        F.Molteni paper) ; update aim.5l_cs output.
507    o New variable in PARM03 for more flexible pickups
508    o somewhat cleaned package initialisation sequence for
509      ctrl/ cost/ ecco/ in packages_... routines
510    
511    checkpoint50g_post
512    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
513      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
514      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
515        made the default because of faster convergence than ADI
516    
517    checkpoint50f_post
518    o exf totally restructured
519      - replaced all exf_set_ routines by one generic exf_set_gen.F
520        and made sure it's still differentiable
521      - split exf_getffields.F into new exf_bulkformulae.F
522      - exf_inscal_/exf_outscal_ suffixes consistent with field names
523      - updated adjoint/makefile and relevant verif. accordingly
524    
525    checkpoint50f_pre
526     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
527          + change Evap over land. (update aim.5l_cs output)
528     o added missing .cvsignores and made uniform across expts
529     o changed configuration of tidal_basin_2d expt
530     o added pkg/debug functions for tracing code in fatal crashes
531     o tidied pkg/monitor to use MONITOR_OPTIONS.h
532     o new fn in pkg/monitor to stop model if solution grows too big
533     o removed lots of single quotes from comments
534    
535    checkpoint50e_post
536    o make KPP work with PTRACERS
537     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
538       nearly a copy of kpp_transport_s
539     - there is no analogue to SurfaceTendencyS, so I have to use
540       gPtr(of the surface layer) instead
541    o add a new platform SunFire+mpi (SunFire 15000) to genmake
542    checkpoint50e_pre
543    
544    checkpoint50d_post
545    o change kpp output from multiple-record state files to single-record state
546      files analogous to write_state.F
547    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
548      analogous to the cg2d-related output.
549    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
550      so that writing to internal file fn (with length 512) fails.
551    checkpoint50d_pre
552    
553    checkpoint50c_post
554    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
555    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
556    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
557    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
558    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
559    
560    checkpoint50c_pre
561    Merging from release1_p13:
562    o bug fix for pkg/seaice dynamic solver
563    o Added SEAICE_initialHEFF to pkg/seaice
564    
565    checkpoint50b_post
566    o store u*,v* in gU,V instead of in guNm1,gvNm1
567    o in order to put the momForcing out of the Adams-Bashforth:
568      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
569      to timestep.F
570    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
571    o re-generate output for highly sensitive test-exp:
572       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
573    
574    checkpoint50b_pre
575    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
576    o corrected CPP option mismatch in exf_Bulk... functions for case
577      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
578    
579    checkpoint50a_post
580    o Bug fix for merging between c50 and KPP.
581      ikey was passed from thermodynamics to kpp_calc via
582      common block rather than being recomputed in kpp_calc,
583      in contradiction with new key itdkey.
584      New key ikppkey created, and tamc.h headers updated.
585    
586    checkpoint50
587    - 2nd step of merge with ecco-branch:
588      merge changes in ecco-branch back into main trunk
589    - bug fix in find_alpha
590    - more storing in gmredi_calc_tensor.F, kpp_routines.F
591    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
592    - merged some sliced AD support routines
593    
594    checkpoint49
595    merged from ecco-branch:
596    o exf:
597      - Enable initialisation of forcing fields to constant
598        (runtime) values.
599      - in exf_getffields.F
600        Reduce i-/j-loop to interior domain, discarding overlaps.
601        That also fixes wrong TAF-key computations for key_1, key_2
602        with bulf formulae.
603      - exf_init.F modify #ifdef for exf_init_evap
604      - exf_getffieldrec.F, ctrl_getrec.F
605        The following INT-usages are not safe:
606          fldsecs  = int(fldsecs/fldperiod)*fldperiod
607          fldcount = int(fldsecs/fldperiod) + 1
608        and were modified.
609    o autodiff: checkpoint_lev...
610      - updated storing for bulk formulae (some arrays were missing)
611      - added state for seaice package
612      - synchronized with main branch
613    o DIVA:
614      Modif.s in
615      - the_main_loop.F
616      - the_model_main.F
617      and added cost_final_restore.F cost_final_store.F
618      o With these changes, it is possible to fully separate
619        the first forward run to compute the cost function (mdthe_main_loop)
620        and adjoint runs over individual DIVA intervals (adthe_main_loop)
621        into separate model executions.
622        This enables better tuning of DIVA to given queue sizes.
623      o Loss of cost function value in consecutive DIVA runs is
624        fixed by storing to 'costfinal' file.
625      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
626        beginning/end of adjoint integration is accounted for.
627      The current changes apply to TAF-1.4.26.
628      TAF has one remaining bug, requiring one manual change
629      (see MITgcm manual).
630    o cal: synchronized between MAIN and ecco-branch
631    
632    checkpoint48i_post
633    o Changes to restore differentiability of code w.r.t. previous tag
634      (mostly adding new routines to make list and replacing
635      pressure by totPhiHyd).
636    o Updated and merged grdchk package
637      - has both ADM and TLM checks
638      - works for single- and multi-proc.
639      - output cleaned
640      - worked successfully for parallel DIVA
641    o genmake:
642      - Adding -platform=SP4
643      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
644    o Modif. for DIVA:
645      ctrl_unpack should not be called in intermediate DIVA interval.
646      (similar thing would apply for active files such as
647      tbar, sbar, psbar, which should not be reinitialised;
648      only relevant for ecco-branch)
649    
650    checkpoint48h_post
651    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
652    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
653    o Added SEAICE_initialHEFF to pkg/seaice
654    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
655    
656    checkpoint48g_post
657    --- EOS:
658    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
659      store total Potential in totPhyHyd for diagnostics & EOS.
660    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
661    --- Pressure/geopotential gradient:
662    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
663    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
664      ( changes results of global_ocean_pressure )
665    o NLFS + z-coord.: add eta*Rho' contribution.
666    o accurate phiHyd when using interface-W at the middle between 2 centers
667     ( changes results of ideal_2D_oce )
668    o includes r* 2nd term in potential gradient.
669    
670    checkpoint48f_post
671    Merging from release1_p12:
672    o Modifications for using pkg/exf with pkg/seaice
673      - improved description of the various forcing configurations
674      - added basic radiation bulk formulae to pkg/exf
675      - units/sign fix for evap computation in exf_getffields.F
676      - updated verification/global_with_exf/results/output.txt
677    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
678      (SBO) core products, including oceanic mass, center-of-mass,
679      angular, and bottom pressure (see pkg/sbo/README.sbo).
680    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
681      to avoid negative values in shallow regions.
682      - updated verification/natl_box/results/output.txt
683      - updated verification/lab_sea/results/output.txt
684    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
685    o Added useSingleCpuIO option (see PARAMS.h).
686    o Updated useSingleCpuIO option in mdsio_writefield.F to
687      work with multi-field files, e.g., for single-file pickup.
688    o pkg/seaice:
689      - bug fix in growth.F: QNET for no shortwave case
690      - added HeffFile for specifying initial sea-ice thickness
691      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
692    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
693      kpp_transport_t.F, forward_step.F, and the_main_loop.F
694    o pkg/seaice:
695      - adjoint-friendly modifications
696      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
697    
698    checkpoint48e_post
699    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
700    o dynamics: change definition of computational domain & adapt mom_fluxform
701      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
702    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
703        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
704        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
705        global_ocean.90x40x15 global_with_exf global_ocean_pressure
706        inverted_barometer solid-body.cs-32x32x1
707      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
708    
709    checkpoint48d_post
710    o in preparation for r*:
711     a) use pre-computed gradient of hydrostatic potential:
712        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
713     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
714        => affects results of glob_oce_pressure (different truncation error)  
715      update output.txt of ideal_2D_oce & global_ocean_pressure
716    
717    checkpoint48d_pre
718    o in preparation for r*:
719      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
720      pass the 2 comp. of the grad. as arguments to momentum S/R.
721      but for the moment, only used if it does not change the results.
722    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
723    
724    checkpoint48c_post
725    Modifications in treatment of initial flux forcing controls
726    to avoid extra storing of flux fields.
727    
728    checkpoint48c_pre
729    o Added tidal_basin_2d experiment (currently 1D!)
730    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
731    
732    checkpoint48b_post
733    o r* coordinate added in #ifdef NONLIN_FRSURF block.
734     (modification to pressure gradient not yet implemented)
735    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
736      (for U & V) that are used for vertical advection of momentum.
737    
738    checkpoint48a_post
739    o In preparation for r*, use temp. array to compute vertical transport
740       in flux-form momentum pkg. => change results of few test-exp.
741      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
742                        lab_sea, natl_box & plume_on_slope
743    
744    checkpoint48
745    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
746    
747    checkpoint47j_post
748    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
749    o moved adexch from forward_step to addummy_in_stepping
750    o added exch in ctrl_map_...
751    o aveFreq.=0. at end of cost_final to avoid overwrite in
752      reverse checkpointing loop
753    o Yet more changes in gmredi:
754      * adgmredi_calc_tensor
755        avoiding all recomputation of gmredi_slope_limit
756      * adgmredi_x/y/rtransport
757        added flag for excessive storing to avoid recomp. of
758        u/v/rtans, dTdx/y/z
759        -> this is not really necessary and very memory-consuming
760      * adgmredi_slope_psi:
761        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
762      * gmredi_slope_limit
763        re-activated full calculation of taperfct for case 'ac02'
764    o updating verification/ adjoints of carbon, global_ocean.90x40x15
765    
766    checkpoint47i_post
767    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
768    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
769      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
770    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
771    o gmredi: fix few bugs.
772    
773    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
774    This will be a good checkpoint to plug into the ecco-branch.
775    o few modif.'s to get latest version adjointed
776      (mainly kick out code in ini_linear_phisurf)
777    o modif's to run adjoint with exactConserv
778    o case GM_BOLUS_ADVEC should be cleaned
779      S/R gmredi_slope_psi should be cleaned
780    o verification/carbon now has exactConserv=.TRUE.
781    
782    checkpoint47g_post
783    o time-average AIM output: becomes independent from statvars time-average
784      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
785    o After TAF bug fix:
786      Tested adjoint of gmredi package.
787      Tests were done with checkpoint47 rather than with latest
788      checkpoint47f_post since the latter is broken for the adjoint
789      verification/carbon/ contains both ADM and TLM gradient checks.
790    Here they are, before they get changed/lost/stolen.
791    Mostly modif.'s to fix numerical sensitivities.
792    Gradient checks OK for
793    - GM_taper_scheme:
794      * clipping
795      * ac02
796      * linear
797      * glw91
798      * dm95
799      * ldd97
800    - GMREDI_OPTIONS:
801      * GM_VISBECK_VARIABLE_K
802      * GM_NON_UNITY_DIAGONAL
803      * GM_EXTRA_DIAGONAL
804      * GM_BOLUS_ADVEC
805    in conjunction with data.gmredi parameters to be checked in
806    in a few minutes under verification/carbon/code/
807    
808    checkpoint47f_post
809    Merging from release1_p10:
810    o modifications for using pkg/exf with pkg/seaice
811      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
812        and SEAICE_EXTERNAL_FLUXES
813      - pkg/exf CPP options EXF_READ_EVAP and
814        EXF_NO_BULK_COMPUTATIONS
815      - usage examples are Experiments 8 and 9 in
816        verification/lab_sea/README
817      - verification/lab_sea default experiment now uses
818        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
819    
820    checkpoint47e_post
821    o created a tag prior to creating a branch
822    
823    checkpoint47d_post
824    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
825      at the bottom boundary had an erroneous half slip boundary condition
826    o added bottom drag and no slip boundary condition capabilities to
827      oceanic pressure coordinates code
828    o added new verification experiment global_ocean_pressure, this experiment is
829      also described in the tutorial section of the manual
830    checkpoint47d_pre
831    
832    checkpoint47c_post
833    o Added a verification experiment for a global cubed-sphere ocean run
834      -  verification/global_ocean.cubed32x32x30
835      -  uses pkg/therm_seaice and pkg/bulk_forcing
836    
837    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
838    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
839      when using P-coordinate; only implemented for atmospheric config.
840    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
841      NOTES: requires option NONLIN_FRSURF to be "#define".
842    o update advect_xz/results/output.txt (left from checkpoint44g_post)
843    
844    checkpoint47b_post
845    Merging from release1_p9:
846    o pkg/seaice
847      - removed GOTO's and added taf directives
848      - double precision constants to reduce the g77 (Linux)
849        to F77 (SGI) differences reported in release1_p8
850    o tools/genmake
851      - added SGI options
852    o verification/testscript
853      - updated to that of checkpoint47a_post
854    o verification/global_ocean.90x40x15/input/eedata
855      - modified for SGI f77 compatibility
856    o verification/lab_sea
857      - added description of sea-ice model
858      - added missing matlab routines
859      - added test of thermodynamics parallelization
860    
861    checkpoint47a_post
862    o new pkg: aim_v23
863     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
864       for now, keep the same surface forcing as before.
865     - Part-Cell implemented into AIM; check that Heat & Water are conserved
866     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
867     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
868    o add diagnostic of surface correction term in monitor output
869    
870    o bulk_force and therm_seaice
871    - Two packages:  bulk_force (Bulk forcing)
872      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
873    - Earlier integration from Stephaine Dutkiewicz
874      and Patrick Heimbach.
875    - Two ifdef statements for compile time,
876       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
877    
878    checkpoint47
879    differentiable version of checkpoint46n_post
880    o bug fix in quasihydrostaticterms
881    o * "clean" adjoint code (in terms of extensive recomputations)
882        can now be obtained for all GMREDI options (i.e. for
883        - GM_VISBECK_VARIABLE_K
884        - GM_NON_UNITY_DIAGONAL
885        - GM_EXTRA_DIAGONAL
886        - GM_BOLUS_ADVEC )
887      * However, wrong gradient check problem remains unsolved.
888      * New CPP options have been introduced for different
889        tapering schemes
890    o external_fields_load now part of differentiation list
891    o pressure needs multiple storing;
892      would be nice to have store_pressure at beginning or
893      end of forward_step, e.g. by having phiHyd global (5-dim.)
894      (NB: pressure is needed for certain cases in find_rho,
895      which is also invoked through convective_adjustment).
896    o recomputations in find_rho for cases
897     'JMD95'/'UNESCO' or 'MDJWF' are OK.
898    o #define ATMOSPHERIC_LOADING should be differentiable
899    o ini_forcing shifted to begining of initialise_varia
900    o Incorporating QNVS line search routines into MITgcm
901      (this is separate code, and therefore not under pkg)
902      lsopt/, optim/
903    o Updated verification/carbon/
904      - #define GM_VISBECK_VARIABLE_K
905      - GM_taper_scheme    = 'ldd97'    
906    
907    checkpoint46n_post
908    Merging from release1_p8:
909    o verification/natl_box:
910      updating new external_fields_load routine
911    o New package: pkg/seaice
912      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
913      The sea-ice code is based on Hibler (1979-1980).
914      Two sea-ice dynamic solvers, ADI and LSR, are included.
915      In addition to computing prognostic sea-ice variables and diagnosing
916      the forcing/external data fields that drive the ocean model,
917      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
918      The implied surface heat flux is then stored in variable
919      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
920      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
921      non-local transport term.  Because this call precedes model
922      thermodynamics, temperature under sea-ice may not be "exactly" at
923      the freezing point by the time theta is dumped or time-averaged.
924      N.B.: fairly large differences in accuracy occur across
925            different platforms/compilers; comparison between
926            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
927            generated output gives:
928       T           S           U           V
929      C D M    c        m  s        m  s        m  s        m  s
930      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
931      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
932      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
933    
934      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
935    o GAD:
936      - generated new common blocks to account for call of
937        same gad routines with differing traceridentities
938        (needed to modify tracerIdentity indices in GAD.h)
939      - generated separate common blocks for case useCubedSphereExchange
940        (Department of Futurology)
941      - parameter lists to gmredi_?transport: added tracerIdentity
942      - added new key indices to tamc.h
943    o external_fields_load:
944      - added this routine to TAF list
945      - needed to make some common blocks global and additional storing
946        along the same lines as exf package (checkpoint_lev?_directives.h)
947    o exf:
948      updated external forcing package
949      - bug fixes carried over from ecco-branch
950        (missing OBCS_OPTIONS.h in two routines)
951      - enable easy to use "no forcing".
952      - added exf I/O for atmospheric loading
953      - added exf I/O for runoff data
954      - transfered scaling between exf <-> MITgcm to exf namelist
955    o Adding new verification experiment global_with_exf.
956      This verification experiment is almost identical to the
957      global_ocean.90x40x15 experiment, except that it uses
958      the exf (and cal) package instead of the
959      external_fields_load routine (cf README file).
960    
961    checkpoint46m_post
962    o modified testscript to return -- when there are no lines of "%MON" output
963    o added new flag "quasiHydrostatic" for QH mode
964      and new routine quasihydrostaticterms()
965    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
966      New routine: mom_u_coriolis_nh()
967    o fixed sign of non-hydrostatic metric terms in u and v equations.
968      Depend on correct sign of gravitySign.
969    o added work.pc* to .cvsignore in aim directories using ifc
970    o introduced flag for controllin non-hydrostatic metric terms
971    o removed gravitySign from PARM04
972    o switched to g77/ifc from pgf77 in aim experiments
973    
974    checkpoint46l_post
975    o made convective adjustment work with pressure coordinates:
976     - changed the direction of k-loop in convective_adjustment.F for the
977       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
978     - adjusted the reference pressure k-index in convective_adjustment.F
979     - adjusted the convection condition in convect.F (in analogy to
980       calc_ivdc.F)
981     - convective_adjustment no longer computes anything on the halos
982     - removed the warnings about negative salinity from find_rho.F and
983       find_alpha.F; instead the new routine look_for_neg_salinity, called
984       at the beginning of find_rho, find_alpha, and find_beta, does a
985       check of the entire slice, if CPP-option
986       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
987    checkpoint46l_pre
988    
989    checkpoint46k_post
990    o fixed the verification/global_ocean.90x40x15 experiment:
991     - new bathymetry (the world according to A., JMC, and M.)
992     - new initial fields and forcing fields (*.bin files)
993     - new POLY3.COEFFS (for the next release one should switch to a full
994       equation of state: JMD95P or MDJWF)
995     - fixed several errors and redundancies in the data file
996     - experiment uses looped cells
997     - added matlab directory with diagnostic scripts for plotting of output
998    
999    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1000     - read AIM physics parameters from a file (data.aimphys)
1001     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1002    
1003    checkpoint46j_post
1004    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1005    o move wVel computation at the end of the time step, in S/R integr_continuity
1006    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1007    o update timeave pkg for wVel diagnostic.
1008    checkpoint46j_pre
1009    
1010    checkpoint46i_post
1011    o Clean up AIM package (and keep the results unchanged):
1012      include CPP_OPTION and use IMPLICT NONE in all routines ;
1013      declare all the variables _RL ; use _d 0 for all numerical constants.
1014      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1015    
1016    checkpoint46h_post
1017    o cleaned up the use of rhoNil and rhoConst.
1018      - rhoNil should only appear in the LINEAR equation of state, everywhere
1019        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1020        and the dynamical equations are all divided by rhoConst
1021    o introduced new parameter rhoConstFresh, a reference density of fresh
1022      water, to remove the fresh water flux's dependence on rhoNil. The default
1023      value is 999.8 kg/m^3
1024    o cleanup up external_forcing.F and external_forcing_surf.F
1025      - can now be used by both OCEANIC and OCEANICP
1026    checkpoint46h_pre
1027    
1028     Added code to convert surface volume flux (fresh water) into
1029     a mass flux when using P coordinates in the ocean (OCEANICP).
1030     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1031    
1032    checkpoint46g_post
1033    o Include a new diagnostic variable phiHydLow for the ocean model
1034      - in z-coordinates, it is the bottom pressure anomaly
1035      - in p-coordinates, it is the sea surface elevation
1036      - in both cases, these variable have global drift, reflecting the mass
1037        drift in z-coordinates and the volume drift in p-coordinates
1038      - included time averaging for phiHydLow, be aware of the drift!
1039    o depth-dependent computation of Bo_surf for pressure coordinates
1040      in the ocean (buoyancyRelation='OCEANICP')
1041      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1042        Theta, Salinity, and Pressure in the parameter list. This routine is
1043        presently contained in find_rho.F. This routine does not give the
1044        correct density for 'POLY3', which would be a z-dependent reference
1045        density.
1046    o cleaned up find_rho
1047      - removed obsolete 'eqn' from the parameter list.
1048    o added two new verification experiments: gop and goz
1049      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1050    checkpoint46g_pre
1051    
1052    checkpoint46f_post
1053    o Enable tangent linear (forward mode) gradient checks:
1054      - extended active file handling to g_... files
1055      - added TANGENT_SIMULATION to theSimulationMode
1056      - extended grdchk package accordingly
1057    o added tangent linear setup in verification/carbon/code_ftl
1058    o added adjoint setup in verification/front_relax/code_ad
1059    
1060    checkpoint46e_post
1061    o Added new equation of state -> MDJWF
1062      - EOS of McDougall et al., 2002, JAOT, submitted
1063      - caveat: the equation of state is only valid for a smaller (more
1064        realistic?) range of values than JMD95P/Z and UNESCO
1065      - added masks to the calculation of pressure in store_pressure
1066      - added more check values for density in check_eos (ini_eos.F), some of
1067        the old check values are out of the range of the MDJWF-eos, so don't
1068        expect perfect matches for those
1069    checkpoint46e_pre
1070    
1071    checkpoint46d_post
1072    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1073      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1074      case of pressure coordinates. eosType='JMD95Z' in
1075      combination with buoyancyRelation='OCEANICP' now causes an error.
1076    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1077      in find_alpha/beta.
1078    checkpoint46d_pre
1079    
1080    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1081      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1082    
1083    checkpoint46c_post
1084    o Changes necessary for ocean in p-coordinates
1085     -  Added new buoyancy relation = 'OCEANICP'
1086     -  Added new parameters = gravitySign (this used to be contained inside
1087        the factor dRdZ which I added when we first switched to R coordinates).
1088     X GM/Redi is not compatible (yet)
1089     X bottom drag and no-slip need to be debugged.
1090    checkpoint46c_pre
1091    
1092    checkpoint46b_post
1093    o Added new equation of state -> JMD95Z and JMD95P
1094      - EOS of Jackett and McDougall, 1995, JAOT
1095      - moved all EOS parameters into EOS.h
1096      - new routines ini_eos.F, store_pressure.F
1097    o Added UNESCO EOS, but not recommended because it requires
1098      in-situ temperature (see JMD95)
1099    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1100      unesco.f to be used with POLY3
1101    checkpoint46b_pre
1102    
1103    checkpoint46a_post
1104    o Added (atmospheric) pressure loading
1105      - new field in FFIELDS.h, etc...
1106      - new cpp flag ATMOSPHERIC_LOADING
1107    o Changed hFacC to _hFacC in calc_phi_hyd.F
1108    o Added SHORTWAVE_HEATING to some files for consistency
1109    checkpoint46a_pre
1110    
1111    checkpoint46
1112    further merges from release1_p5
1113    o new ctrl package
1114      - adopted from ECCO environment to enable optimization
1115      - added Eliassen Palm fluxes to controls
1116    o added Eliassen Palm flux controls to gradient check package
1117    o cost package
1118      - Compatible with new ctrl package
1119      - added Eliassen Palm cost hooks
1120      - modif's of existing cost functions
1121    o Adjoint-related bug fixes in kpp:
1122      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1123      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1124    o autodiff package
1125      - flow directives:
1126        + new for S/R do_the_model_io
1127        + enhanced for S/R checkpoint
1128        + new gmredi.flow
1129      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1130        disable adcommon.h/g_common.h by default.
1131      - fixed problem for adjoint of global_max
1132    o modified verification/carbon/
1133    o New setup for adjoint of global_ocean
1134    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1135    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1136    o incorporated hooks for sponge layer code (external_forcing.F)
1137    
1138    checkpoint45d_post
1139    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1140    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1141      (affects plume_on_slope "cg2d" output)
1142    o add new parameter deltaTfreesurf for free-surface time stepping
1143    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1144    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1145    o change phiMin in exp1 (to agree with documentation)
1146    o add new flags:
1147     - T,S forcing inside/outside Adams-Bashforth
1148     - turn off temp,salt advection and/or forcing
1149     - for each tracer, define internal flag for multiDimAdvection & A-B
1150    o monitor: change definition of KE to check conservation of Energy
1151    
1152    checkpoint45c_post
1153    o Removed f90 comments ("!")
1154    o Modified initialisations to enable exf package for MITgcm
1155      (without invoking ECCO_PACKAGE).
1156    o modifications to gradient check package (Martin Losch)
1157      - enable centered differences
1158      - modified format of standard output
1159    
1160    checkpoint45b_post
1161    o cleaned exchange calls in cg2d
1162    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1163    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1164      to configure barotropic setup (Martin Losch)
1165    o moved some initialisations within bi,bj loop in dynamics
1166      (TAF flow dependency)
1167    o in initialise_varia, moved call packages_init_variables
1168      before convective_adjustment_init
1169      (corresponding adjustment of TAF tape initialisation).
1170    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1171    
1172    checkpoint45a_post
1173    o compute Rho over the whole domain (extend iMin,jMin indices)
1174    o specific exchange for X-slice domain (case Ny=1)
1175    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1176    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1177    
1178    checkpoint44h_post = checkpoint45
1179    o Fix to restore differentiability:
1180      place at which packages_init_variables is called in
1181      initialise_varia is crucial for reverse control flow.
1182    o modifications in GMRedi to enable stable adjoint
1183      (corresponding modif's in thermodynamics, dynamics)
1184    o added missing hook for sponge layer code in external_forcing
1185    o modified test cost functions
1186    o storing in gad_advection (plus removal of write(0,*)!
1187    o missing headers TR1.h added in convective_adjustment routines
1188    o errorMessageUnit set non-equal zero in eeboot
1189      (conflict on some platforms, e.g. IBM SP3)
1190    o modified carbon verif.
1191    
1192    checkpoint44h_pre
1193    o vertical grid option: allow to put the Interface at the middle between
1194      2 cell-centers ; replace delZ in pkg/kpp by drF.
1195    o GM Advective form: Tracers are advected using the residual transport (=
1196      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1197    
1198    checkpoint44g_post
1199    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1200      results) ; ifdef missing in thermodynamics.F
1201    
1202    checkpoint44f_pre,checkpoint44f_post
1203    o added PTRACERS package
1204      This allows an arbitrary number of passive tracers to be integrated
1205      forward simultaneously with the dynamicaly model.
1206      + Implemented so far:
1207        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1208        - I/O and checkpointing
1209        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1210      + Not implemented so far:
1211        - KPP
1212        - OBCS
1213      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1214        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1215        line in data.pkg.
1216      + This package is disabled by default since it increases storage.
1217    
1218    
1219    o testscript: added -cleanup option
1220    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1221                 b) enable to filter 2D fields.
1222    
1223    checkpoint44e_pre,post
1224    o re-wrote convective adjustment to use pre-calculated weights
1225      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1226      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1227      Original calls to convect() still in place.
1228    
1229    chkpt44d_pre,post
1230    o added missing EXCLUDE_MONITOR flags
1231    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1232      (incompatible typ in MIN/MAX expressions caused problems
1233      on IBM SP3)
1234    o in genmake added variable MAKEDEPEND
1235      plus resetting for case SunOS
1236    o added timer_stats.c routine for IBM SP3
1237    o removed variables in dynamics
1238    !!! I forgot to create tag chkpt44d_pre !!!
1239    !!! But chkpt44d_pre = chkpt44c_post    !!!
1240    
1241    o real fresh water flux implemented with non-linear free-surface.
1242    
1243    chkpt44c_pre,post
1244    o few fix (mask in shap_s2, EmPmR in external_field_load,
1245      USE_NATURAL_BCS in solve_for_P);
1246    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1247    
1248    checkpoint44b_pre/_post
1249    o merge of relevant stuff from the ecco-branch:
1250      - genmake: removed $S64 overwrite for case SunOS
1251      - pkg/exf: update and corrections for field swapping and obcs
1252      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1253                  harmonized between ECCO and MITgcm
1254      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1255                      updated checkpointing_lev... lists for obcs
1256      - model/src: minor changes in forward_step, plot_field
1257                   added directive for divided adjoint in the_main_loop
1258      - pkg/mdsio: added mdsio_gl_slice
1259    
1260    o check parameters & config (chkpt44a_pre,post)
1261    o OBC and NonLin_FrSurf.
1262    
1263    checkpoint44
1264    o fix bug in mom_vi_del2uv
1265    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1266    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1267    o update AIM experiments (NCEP input files)
1268    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1269    o added some stuff for AD
1270    
1271    checkpoint43
1272    o added two new advection tests
1273    o added global 4x4 degree ocean test
1274    o added test of H&S94 with free surface on cube
1275    o some final mods for gradient check, adjoint,...
1276    
1277    checkpoint42
1278      Fixed AD-related problems:
1279    o Store directives up-to-date with re-arranged Adams-Bashforth
1280      (mainly thermodynamics.F)
1281    o New store directives for multi-dim. advection schemes
1282      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1283      * new common block and key passkey
1284      (mainly gad_advection.F)
1285    o Modified store directives for split of dynamics/thermodynamics
1286      for the case ALLOW_KPP
1287    o Cleaned argument list for timestep_tracer.F
1288    
1289    checkpoint41
1290    o re-formatted/added comments in prologues of key subroutines
1291      to work with protex
1292    
1293    checkpoint40
1294    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1295    o added FLT (floats) package from Arne along with demo. experiment
1296    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1297      implementation of forward-in-time forcing terms
1298    o more mods for non-linear free-surface including new variable
1299    o modified multi-dim method to work on cube
1300    o bug fix in KPP (from DM)
1301    
1302    checkpoint40pre9
1303    o added DST advection schemes
1304    o fix MPI bug on SGI's
1305    o modifications for non-linear free-surface
1306    o fixed conditionals for fixed flow/passive tracer only mode
1307    o added tension/strain form of stress tensor
1308    o changes to commenting of arguments for TAF/TAMC
1309    o added/updated many matlab scripts
1310    o added multi-dimensional advection method for tracers
1311      
1312    checkpoint40pre8
1313    o new package rw/
1314      Added method for dumping intermediate local arrays:
1315      mdsio_writetile - same as mdsio_writefield except works from inside
1316                        bi,bj loop
1317      mdsio_writelocal - same as mdsio_writetile except works for local
1318                         arrays
1319      write_local_r? - higher-level wrapper for mdsio_writelocal
1320      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1321      Example given at end of mom_vecinv.F that dumps some local arrays.
1322    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1323      control flux-form versus vector invariant code.
1324      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1325      or genmake -DISABLE ...
1326    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1327      (additional storing is now needed for case vecinv;
1328      currently nothing implemented to switch this storing off
1329      in case fluxform is used since no CPP flag available).
1330    
1331    checkpoint40pre7
1332    o bug fix in dynamics.F
1333      calc_viscosity called before k=1,Nr loop.
1334    o added some #ifdef's ALLOW_PASSIVE_TRACER
1335    o cleaned initialisations in ctrl_map_ini
1336      related to TAF
1337    
1338    checkpoint40pre6
1339    o split dynamics into thermodynamics & dynamics
1340    o corresponding split of calc_diffusivity into
1341      calc_diffusivity, calc_viscosity
1342      (kpp_calc_diff, kpp_calc_visc).
1343    o Added diffkr, kapgm to control variables
1344    o bug fix in gmredi_slope_limit for ldd97
1345    
1346    checkpoint40pre5
1347    o proper initialization of Adams-Bashforth time stepping
1348      + uses forward step for very first step of model (iter=0)
1349    o re-generated *all* output since almost all output is modified by this
1350      change (sorry but we've been putting this one off for about 2 years)
1351      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1352        *not* regenerated since they are already out of date and I don't
1353        want to create the impression that they are suddenly working.
1354    o removed KAP stuff for DEC's
1355    o modified/added many .cvsignore files in */code and */input
1356    o added new expt "solid-body.cs-32x32x1"
1357      + this uses an alternative form of ini_curvilinear_grid.F which
1358        is not necessarily any better than the current one...
1359    
1360    checkpoint40pre4
1361    o added re-initialisations of utrans,vtrans,rtrans in
1362      calc_common_factors which are crucial for TAF.
1363    o extended iMin,jMin range for calc_common_factors,
1364      calc_diffusivity
1365    o added option ALLOW_PASSIVE_TRACER
1366    o a few minor updates and fixes
1367    
1368    checkpoint40pre3
1369    o created calc_gtr1.F for gad package
1370    o split the_main_loop and re-introduced forward_step
1371    o some recomputations of nIter0 for TAMC
1372    
1373    checkpoint40pre2
1374    o Updated to latest branch of AJA, JMC
1375    o Added gradient check package
1376    o Added routines for passive tracer handling
1377    o Added carbon sequestration sensitivity experiment
1378    
1379    checkpoint39
1380     o Modifications and fixes to support TAMC
1381       (mainly missing or wrong directives)
1382     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1383       in addummy_in_stepping
1384     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1385     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1386     o Included following packages:
1387       cal: calendar
1388       exf: external forcing
1389       ecco: essential routines to control use of cal, exf
1390             (NB: this is not the full ECCO environment)
1391     o disabled some packages by default in genmake
1392    
1393    checkpoint38
1394     o see notes_c37_adj.txt
1395     o corrected wrong layer index in external_forcing_t
1396     o replaced the_main_loop/forward_step by the_main_loop
1397     o removed forceoutput from write_state
1398       (replaced criteria for initial/final state)
1399     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1400    
1401    checkpoint37
1402     o mdsio.F routine split and packaged in pkg/mdsio
1403       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1404        used unless genmake -disable=mdsio)
1405     o allow a more precise surface-geopotential gradient for the atmosphere
1406       taking into account the change in space of Alpha (=1/rho) at the surface.
1407     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1408       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1409     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1410       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1411       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1412     o Time-Average diagnostics defined as a pseudo package "timeave".
1413     o pickup files : old pickup (before c35) did not work with new code (c35
1414       and after) unless activating 2 commented lines in initialise-varia.
1415     o Non-Hydrostatic pickup file Pb fixed.
1416     o bug with Rigid-lid version (since c35) fixed.  
1417    
1418    checkpoint36
1419     o implement Crank-Nickelson barotropic time-stepping
1420     o recover Time-Average diagnostics
1421     o fix Pb in checkpoint (PR#19)
1422     o AIM become a standard package ; clean unused CPP_kees
1423    
1424    checkpoint35
1425     o subtantial rewrite of dynamics.f
1426     o allows staggered time-stepping
1427     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1428     o added bottom drag (linear + quadratic)
1429    
1430    checkpoint34
1431     o Modified exchange routines for correct reverse simulation.
1432     o Added verification output to comply with bug fix in impldiff.F
1433       as of c33 (exp2, natl_box).
1434     o Corrected store directives in dynamics.F
1435     o Corrected array boundaries in impldiff.F
1436     o Corrected array dimensions in gmredi.
1437       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1438     o Added routine GLOBAL_SUM_INT to global_sum.F
1439     o Added mdsio_gl.F for ECCO purposes.
1440    
1441    checkpoint33
1442     o Fixed bug in lower BC in impldiff.F
1443     o Fixed confusion about units of forcing arrays in FFIELDS.h
1444       namely Fu,Fv,Qnet,Qsw,EmPmR:
1445       - Removed verification/natl_box/code/external_fields_scale.F
1446         (did not differ from that in model/src)
1447       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1448         (see FFIELDS.h for description)
1449       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1450         kpp_calc.F and kpp_transport_t.F
1451       - Removed model/src/external_fields_scale.F and calls to it
1452       - verification/natl_box uses flux data with "atmospheric" sign so
1453         a special version of external_fields_load.F is used to
1454         change the data as it's read in. This way, the arrays
1455         have the right units and signs at all times tha a user could
1456         possibly use them.
1457     o Corrected genmake to delete a temporary file during configuration
1458    
1459    checkpoint32
1460     o Scaling of forcing fields moved from external_forcing.F to
1461       external_fields_scale.F, called directly after loading fields.
1462     o Surface relaxation terms added to surface tendency fields in
1463       extra subroutine.
1464     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1465       fields.
1466     o Changes in GMRedi to comply with packaging structure.
1467     o Modifications and bug fixes in KPP package.
1468     o Verification experiment for KPP added (verification/nat_box/)
1469    
1470    checkpoint31
1471     o Packages interface brought in line with defined standard
1472       -> new routines packages_...F
1473       -> changes in initialise_fixed.F, initialise_varia.F
1474       -> enables initialisation interface for ECCO package
1475     o Rescaling of external forcing fields immediately after read
1476       (removed from external_forcing.F)
1477       -> new: surface_fields_scale.F
1478       -> affects ini_foorcing.F, external_fields_load.F
1479     o Computation of surface tendencies before tendency updates.
1480       -> new: external_forcing_surf.F
1481     o Change of variable names useGMRedi, useKPP, useECCO
1482     o Further changes in dynamics.F, impldiff.F for TAMC
1483     o Tested for experiments 0, 2, 4.
1484       - not yet tested for GMRedi.
1485       - not yet tested for KPP.
1486    
1487    checkpoint30
1488     o Updates for OBCs
1489     o New experiment for test OBCs (internal_wave)
1490     o New output.txt in verification/exp4/results/
1491     o Updates for KPP: calculation of viscosity corrected, new variables
1492       kpp_dumpFreq and kpp_taveFreq
1493     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1494       and entry for T90 in genmake
1495    
1496    checkpoint29
1497     o packaged KPP and GM/Redi
1498    
1499    checkpoint28
1500     o Corrected initialization of hFacMin for difference vertical coordinates
1501     o Modified calculation of partial cell thickness to more robust algorithm
1502     o config_summary.F: replaced write_1D_... by write_0D_...
1503       read_write.F: added subroutines write_0D_...
1504     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1505       included some initialisations required for TAMC.
1506     o routine calc_isoslopes: modified sqrt computation to make it
1507       differentiable for zero argument.
1508     o routines dynamics, impldiff:
1509       included store directives and tape key computations required for TAMC.
1510     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1511    
1512    checkpoint27
1513     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1514       formulation works properly with variable resolution.
1515     o restructured the calling tree between the_model_main() and dynamics()
1516     o split initialise() into initialise_fixed() and initialise_varia()
1517     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1518       in new routine ini_psurf()
1519    
1520    checkpoint26
1521     o moved some #ifdef in optional routines to encompass everything
1522       except the argument declarations. This was using up some memory.
1523     o fixed macros like _ADT to work with both versions of Linux cpp
1524     o cleaned up some unused and uninitialized variables
1525       (helps when debugging with strict compile options)
1526     o split up CPP_EEOPTIONS.h into options and macros
1527       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1528     o patch for 2 processor JAM mode
1529    
1530    checkpoint25
1531     o updates for OBCs and NH
1532     o dramatically reduced memory usage
1533     o added "JAM" routines for use on Artic network
1534     o parameterization of convection by implicit vertical diffusion
1535     o added a diagnostic of convective index
1536     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1537       (this is was partly for OBCs and NH but also in anticipation of
1538        an explicit free-surface option)
1539     o initial state input files for U and V
1540    
1541    checkpoint24
1542     o Removed some spurious "REAL"s
1543     o Updated KPP to latest version from JPL
1544     o Added a COS(latitude) in horizontal viscosity
1545    
1546    checkpoint23
1547     o Added del^4 diffusion for salt and temperature
1548     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1549    
1550    checkpoint22
1551     o Made many small changes: implicit none, format(i5), etc...
1552     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1553    
1554    checkpoint21
1555     o Introduced new I/O package that supports direct-access records (mdsio.F)
1556     o Split-up mid-level I/O routines
1557     o Updated input data for experiments 0,1,2,4 and 5
1558     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1559    
1560    checkpoint20
1561     o Tidied up open-boundaries some more
1562     o Added non-hydrostatic code
1563     o Fixed some input data
1564     o Modified MPI start-up to work in "coupled" context.
1565    
1566    checkpoint19
1567     o Tidied up directory structure for verification experiments.
1568     o Added new code for open boundaries.
1569     o Corrected advective terms near boundaries.
1570     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1571     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1572     o Split default parameters out of ini_parms.F into set_defaults.F.
1573    
1574    checkpoint18
1575     o Further changes for optional code generation with
1576       CPP - ugh!
1577    
1578    checkpoint17
1579     o Beginning to incorporating modularity
1580       for supporting atmos. and ocean configs.
1581     o Small changes for TAMC complinace
1582     o New ultra simple test case. Barotropic box
1583       configuration "exp0".
1584    
1585    checkpoint16
1586     o Minor changes to exchange routines to support
1587       accumulation in reverse mode. Adjoint of an
1588       assignment is an addition.
1589     o Changes to support compilation by TAMC (LR(1)
1590       syntax) and by g77 under Linux ( 72 character
1591       limit ).
1592    
1593    checkpoint15
1594     Rewrote exchange routines to allow
1595     o General tile <-> tile connectivity.
1596     o TAMC reverse mode flag ( is this really needed? )
1597     o Variable width overlap and exchange region widths.
1598     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1599       shmput/shmget, VIA, SYSV shmem and every other cool
1600       communication method.
1601    
1602    checkpoint14
1603     Consistent isomorphism chages made. These allow dynamical core
1604     to support both pressure and meters as a vertical coordinate.
1605    
1606    checkpoint13
1607     Release which corrects global_max problem and a couple
1608     of KGM time-averaging diagnostic errors. Also contains
1609     a double-gyre experiment setup as well as the baseline
1610     4 degree global template. The double gyre template is
1611     organised to allow it to be applied automatically to
1612     the baseline configuration.
1613    
1614    branch-point-rdot
1615     A few tidy-ups have been made bt the real point of this
1616     check-point (excuse the pun) is to allow a branch to be
1617     made for the purposes of adding the rDot alterations.
1618     I don't want to commit the rDot to the main-trunk until
1619     we've actually tested it...
1620    
1621    checkpoint12
1622     Tidy up and added generic genmake script (formerly
1623     configure script).
1624     Released to testers.
1625    
1626    checkpoint11
1627     Re-arranged initialise() and introduced ini_vertical_grid()
1628     and ini_masks_etc().
1629    
1630    checkpoint10
1631     Introduced the configure script.
1632     Separated out the diags package.
1633     Added template for writing time-averages of tile/intermediate quantities.
1634     Updated SIZE.h in exp2 and made the data big-endian.
1635    
1636    checkpoint9
1637     MPI fix. Filename changes (meta/data). salbin*y stuff.
1638     General tidy-up.
1639     SST.bin SSS.bin added to verification/exp2
1640    
1641    checkpoint8
1642     Inludes time-dependant forcing and time-averaging.
1643     Works at 4x4 and 2.8125x2.8125 global
1644    
1645    checkpoint7-4degree-ref
1646     Branch from checkpoint7. Released for application to
1647     global modeling and general modeling - process studies, regional
1648     model etc..
1649     Configured for verification/exp2 - 4 degree global, two process.
1650    
1651    checkpoint7
1652     Created by cnh
1653     Simple 4 degree global simulation
1654     configuration.
1655     Includes climatological wind,
1656     hydrography, bathymetry etc
1657     Does not include Heat Flux and E-P
1658    
1659    checkpoint6
1660     Created by cnh
1661     merged checkpoint5 with CD and
1662     spherical polar code.
1663     Still some problems with GM Redi
1664     abd full topography.
1665    
1666    checkpoint5
1667     Created by AJA
1668     contains updates to GM Redi
1669     and reordered timestepping loop
1670     for Implicit Diffusion.
1671    
1672  checkpoint4  checkpoint4
1673   Created by cnh   Created by cnh
1674   Contains memory saving macros ( _rdxc etc..) for when   Contains memory saving macros ( _rdxc etc..) for when

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