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revision 1.7 by adcroft, Mon Jun 22 16:24:50 1998 UTC revision 1.267 by jmc, Thu Mar 11 14:54:53 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52l_post
7    o new land formulation:
8      a) use ground enthalpy as prognostic variable to ensure exact
9         energy conservation.
10      b) account for water temperature and for latent heat of freezing
11         in all processes (rain, run-off, ground storage)
12      c) compute surface and ground temperature implicitly.
13    o aim_v23 modification for new land model:
14      a) Treat separately land / ocean / sea-ice surface fluxes
15         to allow implicit computation of land & sea-ice surface temp.
16      b) add snow precipitation.
17    checkpoint52l_pre
18    
19    o fix problem (when 1 tile is empty) in min/max monitor.
20    o fix bug in timeAve (u,vZetatave in common block)
21    o no restoring terms under ice for pkg/seaice
22    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
23    o bug fix for pkg/seaice pickups
24    o change MNC call locations and add coordinate attributes
25    o mask vorticity at the corner ; affects global_ocean.cs output
26    o fix ini_curvilinear_grid ; test CS experiments with mpi
27    o aim.5l_cs: modify sea-ice fraction input file ; update output
28    o exf: Adding simple range check routine for exf fields after read
29    
30    checkpoint52k_post
31    o removed top-level directory "diags"
32      - we migrated these functions to pkg/timeave a long time ago
33    o fixed bug introduced in pkg/monitor
34    o accuracy ctrlprec = 32 insuffient for gradient checks using
35      averaged fields (I/O via cost_averages)
36      -> use ctrl.h in active_file*.F to control I/O precision.
37    o paramter list of CALL ADTHE_MAIN_LOOP
38    o added initial do_the_model_io to ecco
39    o set all ...Freq to zero after cost_final
40      taveFreq, dumpFreq, pChkptFreq
41    o MAIN and ECCO differentiability restored
42    
43    checkpoint52j_post
44    o fix nchklev in tamc.h for global_ocean...
45    o Bringing flow and store directives up-to-date
46    o Really weird thing!
47      call do_the_model_io from the_main_loop with parameters
48      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
49      TAF places a faulty re-call of initialise_varia
50      after cost_final call which should not be there!
51    checkpoint52j_pre
52    
53    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
54      error messages
55    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
56    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
57      debug output
58    o modfied mdsio_writefield.F to handle non-global files under exch2
59    o update AIM Cubed-Sphere exp (aim.5l_cs):
60      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
61    o update AIM Equatorial Channel exp:
62      use standard aim_v23 pkg and change the SST fields to be more realistic.
63    o globalFile now works with exch2
64    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
65      mon_vort3.F to make exch2 friendly with >1 tile per cube face
66    o limit timeave output for hi-res integrations
67    
68    checkpoint52i_post
69    o removed CPP_EEOPTIONS.h from verification/*/code
70    o updated the tiling for global_ocean_pressure
71    checkpoint52i_pre
72    
73    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
74      the old pkg/aim).
75    
76    checkpoint52h_pre
77    o shortened offending lines in exch2_send_rx?.template
78    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
79    o genmake2: add build & execute test for NetCDF code
80    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
81      old grid files, moved CPP_EEMACROS.h to pkg/exch2
82    o added useSingleCPUIO flag to monitor.F and mon_out.F
83    o added temporary hack for sea-ice dynamics on the cube:
84      metric terms are ignored and it is assumed that
85      there is no sea-ice on cube faces 1, 2, 4, and 5.
86    
87    checkpoint52f_post
88    o added exch2 cube routines to pkg/exch2
89    o modified hs94.cs-32x32x5 to use it
90    o added new grid files to hs94.cs-32x32x5
91    checkpoint52f_pre
92    
93    checkpoint52e_post
94    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
95      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
96    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
97      to work with implicit vertical advection and AB ;
98    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
99    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
100     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
101    checkpoint52e_pre
102    
103    o fix bug in impldiff when Nr=1 or Nr=2.
104    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
105    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
106    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
107      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
108    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
109    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
110    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
111    
112    checkpoint52d_post
113    o re-tiled many expts to allow comparison in multi-processor mode
114      - updated output accordingly
115      - changed hs94.128x64x5 to use intial T from file rather than use the
116        random number generator
117    o add infrastructure in model routines for fizhi and gridalt packages
118    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
119    o changes to permit hi-res, cubed-sphere, configuration
120      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
121      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
122      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
123        of surface winds for the cube
124      (A verification experiment, based on global_ocean.cs32x15, but with
125       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
126       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
127       complete with example surface forcing files and matlab scripts to look
128       at the output and compare it with that of global_ocean.cs32x15.)
129    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
130       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
131       to conform to the common rule.
132    o check-in the first version of the coupler + interfaces for multi-components
133       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
134       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
135       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
136       - ocean and atmos. share the same horizontal grid (no interpolation).
137       - exchanges between component and coupler is done in forward_step
138    o new verification experiment, cpl_aim+ocn:
139       coupled ocean - AIM atmosphere on cs32 grid.
140    
141    checkpoint52d_pre
142    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
143    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
144    
145    checkpoint52c_post
146    o Fixing OPTIONS files for use of exf:
147      - ALLOW_ECCO not needed
148      - ECCO_CPPOPTIONS.h should not be included from
149        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
150        as has been the case in the past
151      - All cal/exf related options are currently set in
152        single header file. Should remain so until we
153        agree on a consistent new policy.
154    o Removed all CPP options for cal package.
155      cal has no more CPP options.
156    o modified STOREs in GAD_ADVECTION
157    o corrected key comp. for passkey
158    
159    checkpoint52b_post
160    o new version: "thsice" of thermodynamic sea-ice pkg:
161     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
162     - modify fluxes but do not change theta directly;
163     - light cleaning of bulk_force pkg (still needed with thsice).
164     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
165       + output_thsice.txt to test thsice & bulk_force pkgs.
166    o put back grid & coriolis monitor output.
167    checkpoint52b_pre
168    
169    o call "do_the_model_io" at the beginning (=> dump initial state)
170    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
171    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
172      (need info on NUMBER_OF_PTRACERS)
173    o missing PTRACERS headers in some routines
174    o default tamc.h in pkg/autodiff supposed to crash
175      to ensure proper customization
176    
177    checkpoint52a_post
178    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
179      - moved surfaceTendencyTice from pkg/seaice to main code
180      - subroutine FREEZE_SURFACE now limits only surface temperature
181        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
182        => new output.txt for global_ocean.cs32x15 & global_with_exf
183      - keep the old version of FREEZE for backward compatibility;
184        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
185      - corresponding modifs for TAF directives
186    o added surface flux output variables to TIMEAVE_STATVARS
187    o time-averaged output for pkg/ptracers
188    o fix problem with ECCO-related divided adjoint
189      snapshot file was missing some ad-variables,
190      but no warning issued by TAF
191    
192    checkpoint52a_pre
193    o some bug fixes for #undef REAL4_IS_SLOW
194    
195    checkpoint52 = ecco_c52_e35
196    o after testing adjoints of checkpoint51u_post
197    
198    checkpoint51u_post
199    o this is the post-merge tag of the ecco-branch
200      (needs another clean checkout and re-testing)
201    o various natl_box_adjoint configs and results
202      but no input fields
203    o obcs adjoint not yet merged!
204    o adding ECCO global 1x1 and 2x2 degree configs
205    o updated/extended some store directives for seaice
206    o pkg/ecco now containes ecco-specific part of cost function
207    o top level routines the_main_loop, forward_step
208      supersede those in model/src/
209      previous input data.cost now in data.ecco
210      (new namelist ecco_cost_nml)
211    o in ctrl/ cleaned some cross-dependencies and updated CPP options
212    
213    checkpoint51t_post
214    o this is the pre-merge tag of the ecco-branch
215    
216    checkpoint51s_post
217    o cleanup: removed various obsolete #define-s
218    o pkg/grdchk
219      - renamed 'ph-grd 3' to 'grad-res'
220      - merged from ecco-branch
221        (remaining bug fixes for obcs gradient checks)
222      - additional high-precision output for testreport
223        (grep for 'precision_grdchk_result')
224    
225    checkpoint51r_post
226    o cleaned up or removed CPP_OPTIONS.h files
227    o updated results for some of the tests to reflect the new
228      optfiles (-ieee: -O0 instead of -O3)
229    
230    checkpoint51q_post
231    o cd_code:
232      - moved cd_scheme.F -> cd_code_scheme.F
233      - separate read_checkpoint from cd_code_ini_vars.F
234      - separated cd_code part from write_checkpoint
235      - updated AD_SOURCE, generated .flow
236      - added CD_CODE_VARS.h to the_main_loop
237      - Moving cd_code specific store dir.s to pkg/cd_code
238    o ctrl package totally restructured
239      - pack/unpack now optional and decoupled from
240        xx_/adxx_ I/O
241      - ctrl_pack/unpack cleaned
242        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
243      - confined inclusion of AD_CONFIG.h to where necessary.
244    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
245    
246    checkpoint51p_post
247    o create initial cd_code package
248      - WARNING: the initialization of fields within packages
249        is broken because INI_FIELDS (where READ_CHECKPOINT is
250        called) is called *before* PACKAGES_INIT_VARIABLES.
251        This seems to be backwards since
252        1) its important to initially zero the entire field including
253           the "halo" region
254        2) zeroing needs to be done *before* reading pickup info
255           and the pickup call might or might not happen in any
256           particular run
257      - this needs an overhaul for R2
258    o cleanup verification/*/code/GMREDI_OPTIONS.h
259    o cleanup testreport
260    
261    checkpoint51o_post
262    o bringing AD-related verif's up to date with genmake2
263      - carbon/
264      - global_ocean.90x40x15/
265      - hs.94.1x64x5/
266      - (front_relax/ )
267    o (more) consistent directory structure for AD-related verif.'s
268    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
269    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
270    o bug fix in find_alpha.F for MDJWF:
271      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
272        change rho -> rho-rhoConst
273      - replace call find_rho to find_rhonum
274    o initialisation of rFlx extended to full array (required by TAF)
275      and shifted to thermodynamics
276    o removed PTRACERS.h in ptracers routine
277    o added surfacetendencyPtr to S/R parameter list pracers_forcing
278    o Correcting initialisations for fVerU, fVerV.
279    o helping TAF to recognize dependency on kUp for
280      fVerU, fVerV
281    o Replacing delZ by delR in pkg/ctrl/
282    checkpoint51o_pre
283    
284    o undid all of cp51 pending some cleanups and discussion
285    o added the [#include "AD_CONFIG.h"] statement to all files that need
286       it for adjoint/tl #defines
287     o re-worked the build logic in genmake2 to support AD_CONFIG.h
288     o removed tools/genmake since it no longer works
289    
290    checkpoint51n_post
291    o modifications to make FREEZE flux visible to pkg/kpp
292      - moved surfaceTendencyTice from pkg/seaice to main code
293      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
294      - subroutine FREEZE now limits only surface temperature
295        (this means new output.txt for global_ocean.90x40x15,
296         global_ocean.cs32x15, and global_with_exf)
297    o added surface flux output variables to TIMEAVE_STATVARS
298    
299    checkpoint51n_pre
300    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
301    o added [#include "AD_CONFIG.h"] to all files that use the following
302      defines:
303      - ALLOW_ADJOINT_RUN
304      - ALLOW_TANGENTLINEAR_RUN
305      - ALLOW_ECCO_OPTIMIZATION
306    
307    checkpoint51m_post
308    o incorporating changes to get TAMC/TAF working in genmake2
309      - added new TAMC/TAF targets to the Makefile
310      - various cleanups related to package handling
311      - these changes should have no impact on the forward model
312    
313    checkpoint51l_post
314    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
315     - faster algorithm for cal_addtime.F
316     - higher precision arithmetic, where needed
317     - pkg/exf *startdate variables changed from calendar date to
318       model integration time
319    
320    checkpoint51l_pre
321    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
322    o enable to apply restoring on S & T only in a latitude band.
323    o update output (external_forcing_surf modif. change truncation errors)
324       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
325    
326    checkpoint51k_post
327    o change default to: useNHMTerms=.FALSE.
328     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
329       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
330     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
331        exp1, ideal_2D_oce
332     - change data file of oceanic exp (leave the results unchanged for now)
333       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
334    o set gravitySign automatically according to the vertical coordinate used
335      (and change sign: back to "logical" value: +1 when R increases downward)
336    o added an include barrier to the default CPP_OPTIONS.h and
337      removed the #include "PACKAGES_CONFIG.h" from it
338    o fix a bug in mom_fluxform (from chk51j_post)
339    
340    checkpoint51j_post
341    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
342    o adjusted some flow directives (dynamics, thermodynamics)
343    o added cubed-sphere case to test cost function
344    o heckpoint_lev?_directives.h now include
345      pkg-specific directives, whenever those are enabled.
346    o Moving pkg-specific flow directives to corresponding pkg
347      Moving pkg-specific differentiation list to corresponding pkg
348      Moving pkg-specific checkpoint-lev storing to corresponding pkg
349      ---> conventions are
350           - pkg_ad.flow
351           - pkg_ad_diff.list
352           - pkg_ad_check_lev?_dir.h
353    
354    checkpoint51i_post
355    o merge of the branch-genmake2
356      - knowingly breaks the older genmake
357      - automatic generation of all ALLOW_${PKG_NAME} defines
358      - new testreport supersedes older testscript
359    o large number of package inclusion and header cleanups
360    checkpoint51i_pre
361    
362    o new output for adjoin of global ocean vector invariant
363    o fix for checkpoint of thermodynamic seaice and bulk_force
364    o Steph gchem various cleanups
365    
366    checkpoint 51h_pre
367    o fixed some single quotes
368    o modify gchem pkg to be more versatile
369    o modifications to clean up dic pkg
370    o add pkg/cfc
371    
372    checkpoint51g_post
373    o provide links for ARPACK and ADM*TLM
374    o start removing verification/vero/
375    o update AD-related stuff
376      (in particular some IF-statements in model/src/ routines)
377    o adding to verification/global_ocean.90x40x15/ adjoint of
378      vector invariant setup
379    
380    checkpoint51f_post
381    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
382    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
383      of tracer Green's fucntions for ocean inversion project.
384    
385    checkpoint51f_pre
386    o Added on-the-fly spatial interpolation capability
387        "USE_EXF_INTERPOLATION" to pkg/exf.
388      - This is a temporary Cartesian-grid hack until
389        the super-duper ESMF coupler becomes available.
390      - See verification/global_with_exf/README for usage example.
391      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
392        flags and modified pkg/seaice accordingly.
393    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
394        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
395        non-local transport term.
396    
397    checkpoint51e_post
398    o pkg/mom_vecinv:
399      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
400      - add time-ave diagnostic of vorticity advection.
401    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
402    o atmospheric geopotential: - include water vapor effect;
403                                - use p^kappa in p* scaling.
404    o land pkg: read initial state from files.
405    o AIM : add stratospheric drag in the upper level
406    
407    checkpoint51d_post
408    o change function ILNBLNK (=> last non-blank char.) to return zero
409      (instead of the string length) when the string. char is empty
410    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
411    o modif's to restore TAMC compatibility
412      - avoid "_d" constructs in PARAMETER declarations
413      - avoid interrupting lines by comment lines
414    o Use cluster local disks for purely local I/O
415      vs. globally visible disks needed for ctrl stuff
416      (merged from ecco-branch)
417      - new active_file_loc... and mdsio_..._loc routines
418      - affected packages: autodiff, ctrl, grdchk, mdsio
419    
420    checkpoint51c_post
421    o introducing integer flag debugLevel
422      - debLevZero: suppress all output
423      - debLevA: standard
424      - debLevB: equivalent to current debugMode=.TRUE.
425    o introducing pathname variable mdsioLocalDir for mdsio
426      that can be specified at runtime
427      (relevant for cluster I/O to local disk)
428    `
429    >>>checkpoint51b_post
430    adjoint of ptracers
431    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
432    o extended state in checkpoint_lev?, etc.
433    o alternative ctrl/cost with tr1 or ptracer
434    o new comlev1_bibj_ptracers
435    o new ptracers.flow
436    o made ptracers_forcing same as external_forcing_s
437    o added verification for adjoint with ptracers
438      - adm. grdchk fail so far
439      - tlm. grdchk OK
440      - checked tapelev/comlev recomputations: OK
441    <<<checkpoint51b_pre
442    
443    checkpoint51a_post
444    o added code for biogeochemistry package
445      - new pkgs: dic, gchem
446      - new subroutine in ptracers
447    o modify code for biogeo packages
448      - in model/src and pkg/ptracers
449    
450    checkpoint51
451    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
452      - autodiff, ctrl, exf, grdchk, seaice
453      kept separate packages
454      - cost, ecco, obcs
455    o updating verification/internal_wave, verification/lab_sea
456      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
457    
458    checkpoint50i_post
459    o Preparing next differentiable checkpoint and sync
460      of MAIN vs. ecco-branch
461      - 1st step: this one is differentiable
462      - 2nd step: next(! not this) checkpoint will have updated packages
463                  from ecco-branch)
464    
465    checkpoint50h_post
466    o new package "land": provide surface BC for AIM.
467    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
468    o AIM: use true log-P extrapolation for near surface temp (= as in
469        F.Molteni paper) ; update aim.5l_cs output.
470    o New variable in PARM03 for more flexible pickups
471    o somewhat cleaned package initialisation sequence for
472      ctrl/ cost/ ecco/ in packages_... routines
473    
474    checkpoint50g_post
475    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
476      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
477      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
478        made the default because of faster convergence than ADI
479    
480    checkpoint50f_post
481    o exf totally restructured
482      - replaced all exf_set_ routines by one generic exf_set_gen.F
483        and made sure it's still differentiable
484      - split exf_getffields.F into new exf_bulkformulae.F
485      - exf_inscal_/exf_outscal_ suffixes consistent with field names
486      - updated adjoint/makefile and relevant verif. accordingly
487    
488    checkpoint50f_pre
489     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
490          + change Evap over land. (update aim.5l_cs output)
491     o added missing .cvsignores and made uniform across expts
492     o changed configuration of tidal_basin_2d expt
493     o added pkg/debug functions for tracing code in fatal crashes
494     o tidied pkg/monitor to use MONITOR_OPTIONS.h
495     o new fn in pkg/monitor to stop model if solution grows too big
496     o removed lots of single quotes from comments
497    
498    checkpoint50e_post
499    o make KPP work with PTRACERS
500     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
501       nearly a copy of kpp_transport_s
502     - there is no analogue to SurfaceTendencyS, so I have to use
503       gPtr(of the surface layer) instead
504    o add a new platform SunFire+mpi (SunFire 15000) to genmake
505    checkpoint50e_pre
506    
507    checkpoint50d_post
508    o change kpp output from multiple-record state files to single-record state
509      files analogous to write_state.F
510    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
511      analogous to the cg2d-related output.
512    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
513      so that writing to internal file fn (with length 512) fails.
514    checkpoint50d_pre
515    
516    checkpoint50c_post
517    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
518    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
519    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
520    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
521    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
522    
523    checkpoint50c_pre
524    Merging from release1_p13:
525    o bug fix for pkg/seaice dynamic solver
526    o Added SEAICE_initialHEFF to pkg/seaice
527    
528    checkpoint50b_post
529    o store u*,v* in gU,V instead of in guNm1,gvNm1
530    o in order to put the momForcing out of the Adams-Bashforth:
531      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
532      to timestep.F
533    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
534    o re-generate output for highly sensitive test-exp:
535       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
536    
537    checkpoint50b_pre
538    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
539    o corrected CPP option mismatch in exf_Bulk... functions for case
540      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
541    
542    checkpoint50a_post
543    o Bug fix for merging between c50 and KPP.
544      ikey was passed from thermodynamics to kpp_calc via
545      common block rather than being recomputed in kpp_calc,
546      in contradiction with new key itdkey.
547      New key ikppkey created, and tamc.h headers updated.
548    
549    checkpoint50
550    - 2nd step of merge with ecco-branch:
551      merge changes in ecco-branch back into main trunk
552    - bug fix in find_alpha
553    - more storing in gmredi_calc_tensor.F, kpp_routines.F
554    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
555    - merged some sliced AD support routines
556    
557    checkpoint49
558    merged from ecco-branch:
559    o exf:
560      - Enable initialisation of forcing fields to constant
561        (runtime) values.
562      - in exf_getffields.F
563        Reduce i-/j-loop to interior domain, discarding overlaps.
564        That also fixes wrong TAF-key computations for key_1, key_2
565        with bulf formulae.
566      - exf_init.F modify #ifdef for exf_init_evap
567      - exf_getffieldrec.F, ctrl_getrec.F
568        The following INT-usages are not safe:
569          fldsecs  = int(fldsecs/fldperiod)*fldperiod
570          fldcount = int(fldsecs/fldperiod) + 1
571        and were modified.
572    o autodiff: checkpoint_lev...
573      - updated storing for bulk formulae (some arrays were missing)
574      - added state for seaice package
575      - synchronized with main branch
576    o DIVA:
577      Modif.s in
578      - the_main_loop.F
579      - the_model_main.F
580      and added cost_final_restore.F cost_final_store.F
581      o With these changes, it is possible to fully separate
582        the first forward run to compute the cost function (mdthe_main_loop)
583        and adjoint runs over individual DIVA intervals (adthe_main_loop)
584        into separate model executions.
585        This enables better tuning of DIVA to given queue sizes.
586      o Loss of cost function value in consecutive DIVA runs is
587        fixed by storing to 'costfinal' file.
588      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
589        beginning/end of adjoint integration is accounted for.
590      The current changes apply to TAF-1.4.26.
591      TAF has one remaining bug, requiring one manual change
592      (see MITgcm manual).
593    o cal: synchronized between MAIN and ecco-branch
594    
595    checkpoint48i_post
596    o Changes to restore differentiability of code w.r.t. previous tag
597      (mostly adding new routines to make list and replacing
598      pressure by totPhiHyd).
599    o Updated and merged grdchk package
600      - has both ADM and TLM checks
601      - works for single- and multi-proc.
602      - output cleaned
603      - worked successfully for parallel DIVA
604    o genmake:
605      - Adding -platform=SP4
606      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
607    o Modif. for DIVA:
608      ctrl_unpack should not be called in intermediate DIVA interval.
609      (similar thing would apply for active files such as
610      tbar, sbar, psbar, which should not be reinitialised;
611      only relevant for ecco-branch)
612    
613    checkpoint48h_post
614    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
615    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
616    o Added SEAICE_initialHEFF to pkg/seaice
617    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
618    
619    checkpoint48g_post
620    --- EOS:
621    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
622      store total Potential in totPhyHyd for diagnostics & EOS.
623    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
624    --- Pressure/geopotential gradient:
625    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
626    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
627      ( changes results of global_ocean_pressure )
628    o NLFS + z-coord.: add eta*Rho' contribution.
629    o accurate phiHyd when using interface-W at the middle between 2 centers
630     ( changes results of ideal_2D_oce )
631    o includes r* 2nd term in potential gradient.
632    
633    checkpoint48f_post
634    Merging from release1_p12:
635    o Modifications for using pkg/exf with pkg/seaice
636      - improved description of the various forcing configurations
637      - added basic radiation bulk formulae to pkg/exf
638      - units/sign fix for evap computation in exf_getffields.F
639      - updated verification/global_with_exf/results/output.txt
640    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
641      (SBO) core products, including oceanic mass, center-of-mass,
642      angular, and bottom pressure (see pkg/sbo/README.sbo).
643    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
644      to avoid negative values in shallow regions.
645      - updated verification/natl_box/results/output.txt
646      - updated verification/lab_sea/results/output.txt
647    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
648    o Added useSingleCpuIO option (see PARAMS.h).
649    o Updated useSingleCpuIO option in mdsio_writefield.F to
650      work with multi-field files, e.g., for single-file pickup.
651    o pkg/seaice:
652      - bug fix in growth.F: QNET for no shortwave case
653      - added HeffFile for specifying initial sea-ice thickness
654      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
655    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
656      kpp_transport_t.F, forward_step.F, and the_main_loop.F
657    o pkg/seaice:
658      - adjoint-friendly modifications
659      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
660    
661    checkpoint48e_post
662    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
663    o dynamics: change definition of computational domain & adapt mom_fluxform
664      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
665    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
666        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
667        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
668        global_ocean.90x40x15 global_with_exf global_ocean_pressure
669        inverted_barometer solid-body.cs-32x32x1
670      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
671    
672    checkpoint48d_post
673    o in preparation for r*:
674     a) use pre-computed gradient of hydrostatic potential:
675        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
676     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
677        => affects results of glob_oce_pressure (different truncation error)  
678      update output.txt of ideal_2D_oce & global_ocean_pressure
679    
680    checkpoint48d_pre
681    o in preparation for r*:
682      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
683      pass the 2 comp. of the grad. as arguments to momentum S/R.
684      but for the moment, only used if it does not change the results.
685    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
686    
687    checkpoint48c_post
688    Modifications in treatment of initial flux forcing controls
689    to avoid extra storing of flux fields.
690    
691    checkpoint48c_pre
692    o Added tidal_basin_2d experiment (currently 1D!)
693    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
694    
695    checkpoint48b_post
696    o r* coordinate added in #ifdef NONLIN_FRSURF block.
697     (modification to pressure gradient not yet implemented)
698    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
699      (for U & V) that are used for vertical advection of momentum.
700    
701    checkpoint48a_post
702    o In preparation for r*, use temp. array to compute vertical transport
703       in flux-form momentum pkg. => change results of few test-exp.
704      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
705                        lab_sea, natl_box & plume_on_slope
706    
707    checkpoint48
708    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
709    
710    checkpoint47j_post
711    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
712    o moved adexch from forward_step to addummy_in_stepping
713    o added exch in ctrl_map_...
714    o aveFreq.=0. at end of cost_final to avoid overwrite in
715      reverse checkpointing loop
716    o Yet more changes in gmredi:
717      * adgmredi_calc_tensor
718        avoiding all recomputation of gmredi_slope_limit
719      * adgmredi_x/y/rtransport
720        added flag for excessive storing to avoid recomp. of
721        u/v/rtans, dTdx/y/z
722        -> this is not really necessary and very memory-consuming
723      * adgmredi_slope_psi:
724        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
725      * gmredi_slope_limit
726        re-activated full calculation of taperfct for case 'ac02'
727    o updating verification/ adjoints of carbon, global_ocean.90x40x15
728    
729    checkpoint47i_post
730    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
731    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
732      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
733    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
734    o gmredi: fix few bugs.
735    
736    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
737    This will be a good checkpoint to plug into the ecco-branch.
738    o few modif.'s to get latest version adjointed
739      (mainly kick out code in ini_linear_phisurf)
740    o modif's to run adjoint with exactConserv
741    o case GM_BOLUS_ADVEC should be cleaned
742      S/R gmredi_slope_psi should be cleaned
743    o verification/carbon now has exactConserv=.TRUE.
744    
745    checkpoint47g_post
746    o time-average AIM output: becomes independent from statvars time-average
747      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
748    o After TAF bug fix:
749      Tested adjoint of gmredi package.
750      Tests were done with checkpoint47 rather than with latest
751      checkpoint47f_post since the latter is broken for the adjoint
752      verification/carbon/ contains both ADM and TLM gradient checks.
753    Here they are, before they get changed/lost/stolen.
754    Mostly modif.'s to fix numerical sensitivities.
755    Gradient checks OK for
756    - GM_taper_scheme:
757      * clipping
758      * ac02
759      * linear
760      * glw91
761      * dm95
762      * ldd97
763    - GMREDI_OPTIONS:
764      * GM_VISBECK_VARIABLE_K
765      * GM_NON_UNITY_DIAGONAL
766      * GM_EXTRA_DIAGONAL
767      * GM_BOLUS_ADVEC
768    in conjunction with data.gmredi parameters to be checked in
769    in a few minutes under verification/carbon/code/
770    
771    checkpoint47f_post
772    Merging from release1_p10:
773    o modifications for using pkg/exf with pkg/seaice
774      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
775        and SEAICE_EXTERNAL_FLUXES
776      - pkg/exf CPP options EXF_READ_EVAP and
777        EXF_NO_BULK_COMPUTATIONS
778      - usage examples are Experiments 8 and 9 in
779        verification/lab_sea/README
780      - verification/lab_sea default experiment now uses
781        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
782    
783    checkpoint47e_post
784    o created a tag prior to creating a branch
785    
786    checkpoint47d_post
787    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
788      at the bottom boundary had an erroneous half slip boundary condition
789    o added bottom drag and no slip boundary condition capabilities to
790      oceanic pressure coordinates code
791    o added new verification experiment global_ocean_pressure, this experiment is
792      also described in the tutorial section of the manual
793    checkpoint47d_pre
794    
795    checkpoint47c_post
796    o Added a verification experiment for a global cubed-sphere ocean run
797      -  verification/global_ocean.cubed32x32x30
798      -  uses pkg/therm_seaice and pkg/bulk_forcing
799    
800    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
801    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
802      when using P-coordinate; only implemented for atmospheric config.
803    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
804      NOTES: requires option NONLIN_FRSURF to be "#define".
805    o update advect_xz/results/output.txt (left from checkpoint44g_post)
806    
807    checkpoint47b_post
808    Merging from release1_p9:
809    o pkg/seaice
810      - removed GOTO's and added taf directives
811      - double precision constants to reduce the g77 (Linux)
812        to F77 (SGI) differences reported in release1_p8
813    o tools/genmake
814      - added SGI options
815    o verification/testscript
816      - updated to that of checkpoint47a_post
817    o verification/global_ocean.90x40x15/input/eedata
818      - modified for SGI f77 compatibility
819    o verification/lab_sea
820      - added description of sea-ice model
821      - added missing matlab routines
822      - added test of thermodynamics parallelization
823    
824    checkpoint47a_post
825    o new pkg: aim_v23
826     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
827       for now, keep the same surface forcing as before.
828     - Part-Cell implemented into AIM; check that Heat & Water are conserved
829     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
830     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
831    o add diagnostic of surface correction term in monitor output
832    
833    o bulk_force and therm_seaice
834    - Two packages:  bulk_force (Bulk forcing)
835      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
836    - Earlier integration from Stephaine Dutkiewicz
837      and Patrick Heimbach.
838    - Two ifdef statements for compile time,
839       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
840    
841    checkpoint47
842    differentiable version of checkpoint46n_post
843    o bug fix in quasihydrostaticterms
844    o * "clean" adjoint code (in terms of extensive recomputations)
845        can now be obtained for all GMREDI options (i.e. for
846        - GM_VISBECK_VARIABLE_K
847        - GM_NON_UNITY_DIAGONAL
848        - GM_EXTRA_DIAGONAL
849        - GM_BOLUS_ADVEC )
850      * However, wrong gradient check problem remains unsolved.
851      * New CPP options have been introduced for different
852        tapering schemes
853    o external_fields_load now part of differentiation list
854    o pressure needs multiple storing;
855      would be nice to have store_pressure at beginning or
856      end of forward_step, e.g. by having phiHyd global (5-dim.)
857      (NB: pressure is needed for certain cases in find_rho,
858      which is also invoked through convective_adjustment).
859    o recomputations in find_rho for cases
860     'JMD95'/'UNESCO' or 'MDJWF' are OK.
861    o #define ATMOSPHERIC_LOADING should be differentiable
862    o ini_forcing shifted to begining of initialise_varia
863    o Incorporating QNVS line search routines into MITgcm
864      (this is separate code, and therefore not under pkg)
865      lsopt/, optim/
866    o Updated verification/carbon/
867      - #define GM_VISBECK_VARIABLE_K
868      - GM_taper_scheme    = 'ldd97'    
869    
870    checkpoint46n_post
871    Merging from release1_p8:
872    o verification/natl_box:
873      updating new external_fields_load routine
874    o New package: pkg/seaice
875      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
876      The sea-ice code is based on Hibler (1979-1980).
877      Two sea-ice dynamic solvers, ADI and LSR, are included.
878      In addition to computing prognostic sea-ice variables and diagnosing
879      the forcing/external data fields that drive the ocean model,
880      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
881      The implied surface heat flux is then stored in variable
882      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
883      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
884      non-local transport term.  Because this call precedes model
885      thermodynamics, temperature under sea-ice may not be "exactly" at
886      the freezing point by the time theta is dumped or time-averaged.
887      N.B.: fairly large differences in accuracy occur across
888            different platforms/compilers; comparison between
889            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
890            generated output gives:
891       T           S           U           V
892      C D M    c        m  s        m  s        m  s        m  s
893      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
894      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
895      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
896    
897      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
898    o GAD:
899      - generated new common blocks to account for call of
900        same gad routines with differing traceridentities
901        (needed to modify tracerIdentity indices in GAD.h)
902      - generated separate common blocks for case useCubedSphereExchange
903        (Department of Futurology)
904      - parameter lists to gmredi_?transport: added tracerIdentity
905      - added new key indices to tamc.h
906    o external_fields_load:
907      - added this routine to TAF list
908      - needed to make some common blocks global and additional storing
909        along the same lines as exf package (checkpoint_lev?_directives.h)
910    o exf:
911      updated external forcing package
912      - bug fixes carried over from ecco-branch
913        (missing OBCS_OPTIONS.h in two routines)
914      - enable easy to use "no forcing".
915      - added exf I/O for atmospheric loading
916      - added exf I/O for runoff data
917      - transfered scaling between exf <-> MITgcm to exf namelist
918    o Adding new verification experiment global_with_exf.
919      This verification experiment is almost identical to the
920      global_ocean.90x40x15 experiment, except that it uses
921      the exf (and cal) package instead of the
922      external_fields_load routine (cf README file).
923    
924    checkpoint46m_post
925    o modified testscript to return -- when there are no lines of "%MON" output
926    o added new flag "quasiHydrostatic" for QH mode
927      and new routine quasihydrostaticterms()
928    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
929      New routine: mom_u_coriolis_nh()
930    o fixed sign of non-hydrostatic metric terms in u and v equations.
931      Depend on correct sign of gravitySign.
932    o added work.pc* to .cvsignore in aim directories using ifc
933    o introduced flag for controllin non-hydrostatic metric terms
934    o removed gravitySign from PARM04
935    o switched to g77/ifc from pgf77 in aim experiments
936    
937    checkpoint46l_post
938    o made convective adjustment work with pressure coordinates:
939     - changed the direction of k-loop in convective_adjustment.F for the
940       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
941     - adjusted the reference pressure k-index in convective_adjustment.F
942     - adjusted the convection condition in convect.F (in analogy to
943       calc_ivdc.F)
944     - convective_adjustment no longer computes anything on the halos
945     - removed the warnings about negative salinity from find_rho.F and
946       find_alpha.F; instead the new routine look_for_neg_salinity, called
947       at the beginning of find_rho, find_alpha, and find_beta, does a
948       check of the entire slice, if CPP-option
949       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
950    checkpoint46l_pre
951    
952    checkpoint46k_post
953    o fixed the verification/global_ocean.90x40x15 experiment:
954     - new bathymetry (the world according to A., JMC, and M.)
955     - new initial fields and forcing fields (*.bin files)
956     - new POLY3.COEFFS (for the next release one should switch to a full
957       equation of state: JMD95P or MDJWF)
958     - fixed several errors and redundancies in the data file
959     - experiment uses looped cells
960     - added matlab directory with diagnostic scripts for plotting of output
961    
962    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
963     - read AIM physics parameters from a file (data.aimphys)
964     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
965    
966    checkpoint46j_post
967    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
968    o move wVel computation at the end of the time step, in S/R integr_continuity
969    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
970    o update timeave pkg for wVel diagnostic.
971    checkpoint46j_pre
972    
973    checkpoint46i_post
974    o Clean up AIM package (and keep the results unchanged):
975      include CPP_OPTION and use IMPLICT NONE in all routines ;
976      declare all the variables _RL ; use _d 0 for all numerical constants.
977      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
978    
979    checkpoint46h_post
980    o cleaned up the use of rhoNil and rhoConst.
981      - rhoNil should only appear in the LINEAR equation of state, everywhere
982        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
983        and the dynamical equations are all divided by rhoConst
984    o introduced new parameter rhoConstFresh, a reference density of fresh
985      water, to remove the fresh water flux's dependence on rhoNil. The default
986      value is 999.8 kg/m^3
987    o cleanup up external_forcing.F and external_forcing_surf.F
988      - can now be used by both OCEANIC and OCEANICP
989    checkpoint46h_pre
990    
991     Added code to convert surface volume flux (fresh water) into
992     a mass flux when using P coordinates in the ocean (OCEANICP).
993     Note: It assumes you have set rho0=rhoConst=density of fresh water.
994    
995    checkpoint46g_post
996    o Include a new diagnostic variable phiHydLow for the ocean model
997      - in z-coordinates, it is the bottom pressure anomaly
998      - in p-coordinates, it is the sea surface elevation
999      - in both cases, these variable have global drift, reflecting the mass
1000        drift in z-coordinates and the volume drift in p-coordinates
1001      - included time averaging for phiHydLow, be aware of the drift!
1002    o depth-dependent computation of Bo_surf for pressure coordinates
1003      in the ocean (buoyancyRelation='OCEANICP')
1004      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1005        Theta, Salinity, and Pressure in the parameter list. This routine is
1006        presently contained in find_rho.F. This routine does not give the
1007        correct density for 'POLY3', which would be a z-dependent reference
1008        density.
1009    o cleaned up find_rho
1010      - removed obsolete 'eqn' from the parameter list.
1011    o added two new verification experiments: gop and goz
1012      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1013    checkpoint46g_pre
1014    
1015    checkpoint46f_post
1016    o Enable tangent linear (forward mode) gradient checks:
1017      - extended active file handling to g_... files
1018      - added TANGENT_SIMULATION to theSimulationMode
1019      - extended grdchk package accordingly
1020    o added tangent linear setup in verification/carbon/code_ftl
1021    o added adjoint setup in verification/front_relax/code_ad
1022    
1023    checkpoint46e_post
1024    o Added new equation of state -> MDJWF
1025      - EOS of McDougall et al., 2002, JAOT, submitted
1026      - caveat: the equation of state is only valid for a smaller (more
1027        realistic?) range of values than JMD95P/Z and UNESCO
1028      - added masks to the calculation of pressure in store_pressure
1029      - added more check values for density in check_eos (ini_eos.F), some of
1030        the old check values are out of the range of the MDJWF-eos, so don't
1031        expect perfect matches for those
1032    checkpoint46e_pre
1033    
1034    checkpoint46d_post
1035    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1036      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1037      case of pressure coordinates. eosType='JMD95Z' in
1038      combination with buoyancyRelation='OCEANICP' now causes an error.
1039    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1040      in find_alpha/beta.
1041    checkpoint46d_pre
1042    
1043    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1044      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1045    
1046    checkpoint46c_post
1047    o Changes necessary for ocean in p-coordinates
1048     -  Added new buoyancy relation = 'OCEANICP'
1049     -  Added new parameters = gravitySign (this used to be contained inside
1050        the factor dRdZ which I added when we first switched to R coordinates).
1051     X GM/Redi is not compatible (yet)
1052     X bottom drag and no-slip need to be debugged.
1053    checkpoint46c_pre
1054    
1055    checkpoint46b_post
1056    o Added new equation of state -> JMD95Z and JMD95P
1057      - EOS of Jackett and McDougall, 1995, JAOT
1058      - moved all EOS parameters into EOS.h
1059      - new routines ini_eos.F, store_pressure.F
1060    o Added UNESCO EOS, but not recommended because it requires
1061      in-situ temperature (see JMD95)
1062    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1063      unesco.f to be used with POLY3
1064    checkpoint46b_pre
1065    
1066    checkpoint46a_post
1067    o Added (atmospheric) pressure loading
1068      - new field in FFIELDS.h, etc...
1069      - new cpp flag ATMOSPHERIC_LOADING
1070    o Changed hFacC to _hFacC in calc_phi_hyd.F
1071    o Added SHORTWAVE_HEATING to some files for consistency
1072    checkpoint46a_pre
1073    
1074    checkpoint46
1075    further merges from release1_p5
1076    o new ctrl package
1077      - adopted from ECCO environment to enable optimization
1078      - added Eliassen Palm fluxes to controls
1079    o added Eliassen Palm flux controls to gradient check package
1080    o cost package
1081      - Compatible with new ctrl package
1082      - added Eliassen Palm cost hooks
1083      - modif's of existing cost functions
1084    o Adjoint-related bug fixes in kpp:
1085      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1086      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1087    o autodiff package
1088      - flow directives:
1089        + new for S/R do_the_model_io
1090        + enhanced for S/R checkpoint
1091        + new gmredi.flow
1092      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1093        disable adcommon.h/g_common.h by default.
1094      - fixed problem for adjoint of global_max
1095    o modified verification/carbon/
1096    o New setup for adjoint of global_ocean
1097    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1098    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1099    o incorporated hooks for sponge layer code (external_forcing.F)
1100    
1101    checkpoint45d_post
1102    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1103    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1104      (affects plume_on_slope "cg2d" output)
1105    o add new parameter deltaTfreesurf for free-surface time stepping
1106    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1107    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1108    o change phiMin in exp1 (to agree with documentation)
1109    o add new flags:
1110     - T,S forcing inside/outside Adams-Bashforth
1111     - turn off temp,salt advection and/or forcing
1112     - for each tracer, define internal flag for multiDimAdvection & A-B
1113    o monitor: change definition of KE to check conservation of Energy
1114    
1115    checkpoint45c_post
1116    o Removed f90 comments ("!")
1117    o Modified initialisations to enable exf package for MITgcm
1118      (without invoking ECCO_PACKAGE).
1119    o modifications to gradient check package (Martin Losch)
1120      - enable centered differences
1121      - modified format of standard output
1122    
1123    checkpoint45b_post
1124    o cleaned exchange calls in cg2d
1125    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1126    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1127      to configure barotropic setup (Martin Losch)
1128    o moved some initialisations within bi,bj loop in dynamics
1129      (TAF flow dependency)
1130    o in initialise_varia, moved call packages_init_variables
1131      before convective_adjustment_init
1132      (corresponding adjustment of TAF tape initialisation).
1133    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1134    
1135    checkpoint45a_post
1136    o compute Rho over the whole domain (extend iMin,jMin indices)
1137    o specific exchange for X-slice domain (case Ny=1)
1138    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1139    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1140    
1141    checkpoint44h_post = checkpoint45
1142    o Fix to restore differentiability:
1143      place at which packages_init_variables is called in
1144      initialise_varia is crucial for reverse control flow.
1145    o modifications in GMRedi to enable stable adjoint
1146      (corresponding modif's in thermodynamics, dynamics)
1147    o added missing hook for sponge layer code in external_forcing
1148    o modified test cost functions
1149    o storing in gad_advection (plus removal of write(0,*)!
1150    o missing headers TR1.h added in convective_adjustment routines
1151    o errorMessageUnit set non-equal zero in eeboot
1152      (conflict on some platforms, e.g. IBM SP3)
1153    o modified carbon verif.
1154    
1155    checkpoint44h_pre
1156    o vertical grid option: allow to put the Interface at the middle between
1157      2 cell-centers ; replace delZ in pkg/kpp by drF.
1158    o GM Advective form: Tracers are advected using the residual transport (=
1159      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1160    
1161    checkpoint44g_post
1162    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1163      results) ; ifdef missing in thermodynamics.F
1164    
1165    checkpoint44f_pre,checkpoint44f_post
1166    o added PTRACERS package
1167      This allows an arbitrary number of passive tracers to be integrated
1168      forward simultaneously with the dynamicaly model.
1169      + Implemented so far:
1170        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1171        - I/O and checkpointing
1172        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1173      + Not implemented so far:
1174        - KPP
1175        - OBCS
1176      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1177        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1178        line in data.pkg.
1179      + This package is disabled by default since it increases storage.
1180    
1181    
1182    o testscript: added -cleanup option
1183    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1184                 b) enable to filter 2D fields.
1185    
1186    checkpoint44e_pre,post
1187    o re-wrote convective adjustment to use pre-calculated weights
1188      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1189      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1190      Original calls to convect() still in place.
1191    
1192    chkpt44d_pre,post
1193    o added missing EXCLUDE_MONITOR flags
1194    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1195      (incompatible typ in MIN/MAX expressions caused problems
1196      on IBM SP3)
1197    o in genmake added variable MAKEDEPEND
1198      plus resetting for case SunOS
1199    o added timer_stats.c routine for IBM SP3
1200    o removed variables in dynamics
1201    !!! I forgot to create tag chkpt44d_pre !!!
1202    !!! But chkpt44d_pre = chkpt44c_post    !!!
1203    
1204    o real fresh water flux implemented with non-linear free-surface.
1205    
1206    chkpt44c_pre,post
1207    o few fix (mask in shap_s2, EmPmR in external_field_load,
1208      USE_NATURAL_BCS in solve_for_P);
1209    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1210    
1211    checkpoint44b_pre/_post
1212    o merge of relevant stuff from the ecco-branch:
1213      - genmake: removed $S64 overwrite for case SunOS
1214      - pkg/exf: update and corrections for field swapping and obcs
1215      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1216                  harmonized between ECCO and MITgcm
1217      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1218                      updated checkpointing_lev... lists for obcs
1219      - model/src: minor changes in forward_step, plot_field
1220                   added directive for divided adjoint in the_main_loop
1221      - pkg/mdsio: added mdsio_gl_slice
1222    
1223    o check parameters & config (chkpt44a_pre,post)
1224    o OBC and NonLin_FrSurf.
1225    
1226    checkpoint44
1227    o fix bug in mom_vi_del2uv
1228    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1229    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1230    o update AIM experiments (NCEP input files)
1231    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1232    o added some stuff for AD
1233    
1234    checkpoint43
1235    o added two new advection tests
1236    o added global 4x4 degree ocean test
1237    o added test of H&S94 with free surface on cube
1238    o some final mods for gradient check, adjoint,...
1239    
1240    checkpoint42
1241      Fixed AD-related problems:
1242    o Store directives up-to-date with re-arranged Adams-Bashforth
1243      (mainly thermodynamics.F)
1244    o New store directives for multi-dim. advection schemes
1245      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1246      * new common block and key passkey
1247      (mainly gad_advection.F)
1248    o Modified store directives for split of dynamics/thermodynamics
1249      for the case ALLOW_KPP
1250    o Cleaned argument list for timestep_tracer.F
1251    
1252    checkpoint41
1253    o re-formatted/added comments in prologues of key subroutines
1254      to work with protex
1255    
1256    checkpoint40
1257    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1258    o added FLT (floats) package from Arne along with demo. experiment
1259    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1260      implementation of forward-in-time forcing terms
1261    o more mods for non-linear free-surface including new variable
1262    o modified multi-dim method to work on cube
1263    o bug fix in KPP (from DM)
1264    
1265    checkpoint40pre9
1266    o added DST advection schemes
1267    o fix MPI bug on SGI's
1268    o modifications for non-linear free-surface
1269    o fixed conditionals for fixed flow/passive tracer only mode
1270    o added tension/strain form of stress tensor
1271    o changes to commenting of arguments for TAF/TAMC
1272    o added/updated many matlab scripts
1273    o added multi-dimensional advection method for tracers
1274      
1275    checkpoint40pre8
1276    o new package rw/
1277      Added method for dumping intermediate local arrays:
1278      mdsio_writetile - same as mdsio_writefield except works from inside
1279                        bi,bj loop
1280      mdsio_writelocal - same as mdsio_writetile except works for local
1281                         arrays
1282      write_local_r? - higher-level wrapper for mdsio_writelocal
1283      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1284      Example given at end of mom_vecinv.F that dumps some local arrays.
1285    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1286      control flux-form versus vector invariant code.
1287      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1288      or genmake -DISABLE ...
1289    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1290      (additional storing is now needed for case vecinv;
1291      currently nothing implemented to switch this storing off
1292      in case fluxform is used since no CPP flag available).
1293    
1294    checkpoint40pre7
1295    o bug fix in dynamics.F
1296      calc_viscosity called before k=1,Nr loop.
1297    o added some #ifdef's ALLOW_PASSIVE_TRACER
1298    o cleaned initialisations in ctrl_map_ini
1299      related to TAF
1300    
1301    checkpoint40pre6
1302    o split dynamics into thermodynamics & dynamics
1303    o corresponding split of calc_diffusivity into
1304      calc_diffusivity, calc_viscosity
1305      (kpp_calc_diff, kpp_calc_visc).
1306    o Added diffkr, kapgm to control variables
1307    o bug fix in gmredi_slope_limit for ldd97
1308    
1309    checkpoint40pre5
1310    o proper initialization of Adams-Bashforth time stepping
1311      + uses forward step for very first step of model (iter=0)
1312    o re-generated *all* output since almost all output is modified by this
1313      change (sorry but we've been putting this one off for about 2 years)
1314      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1315        *not* regenerated since they are already out of date and I don't
1316        want to create the impression that they are suddenly working.
1317    o removed KAP stuff for DEC's
1318    o modified/added many .cvsignore files in */code and */input
1319    o added new expt "solid-body.cs-32x32x1"
1320      + this uses an alternative form of ini_curvilinear_grid.F which
1321        is not necessarily any better than the current one...
1322    
1323    checkpoint40pre4
1324    o added re-initialisations of utrans,vtrans,rtrans in
1325      calc_common_factors which are crucial for TAF.
1326    o extended iMin,jMin range for calc_common_factors,
1327      calc_diffusivity
1328    o added option ALLOW_PASSIVE_TRACER
1329    o a few minor updates and fixes
1330    
1331    checkpoint40pre3
1332    o created calc_gtr1.F for gad package
1333    o split the_main_loop and re-introduced forward_step
1334    o some recomputations of nIter0 for TAMC
1335    
1336    checkpoint40pre2
1337    o Updated to latest branch of AJA, JMC
1338    o Added gradient check package
1339    o Added routines for passive tracer handling
1340    o Added carbon sequestration sensitivity experiment
1341    
1342    checkpoint39
1343     o Modifications and fixes to support TAMC
1344       (mainly missing or wrong directives)
1345     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1346       in addummy_in_stepping
1347     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1348     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1349     o Included following packages:
1350       cal: calendar
1351       exf: external forcing
1352       ecco: essential routines to control use of cal, exf
1353             (NB: this is not the full ECCO environment)
1354     o disabled some packages by default in genmake
1355    
1356    checkpoint38
1357     o see notes_c37_adj.txt
1358     o corrected wrong layer index in external_forcing_t
1359     o replaced the_main_loop/forward_step by the_main_loop
1360     o removed forceoutput from write_state
1361       (replaced criteria for initial/final state)
1362     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1363    
1364    checkpoint37
1365     o mdsio.F routine split and packaged in pkg/mdsio
1366       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1367        used unless genmake -disable=mdsio)
1368     o allow a more precise surface-geopotential gradient for the atmosphere
1369       taking into account the change in space of Alpha (=1/rho) at the surface.
1370     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1371       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1372     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1373       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1374       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1375     o Time-Average diagnostics defined as a pseudo package "timeave".
1376     o pickup files : old pickup (before c35) did not work with new code (c35
1377       and after) unless activating 2 commented lines in initialise-varia.
1378     o Non-Hydrostatic pickup file Pb fixed.
1379     o bug with Rigid-lid version (since c35) fixed.  
1380    
1381    checkpoint36
1382     o implement Crank-Nickelson barotropic time-stepping
1383     o recover Time-Average diagnostics
1384     o fix Pb in checkpoint (PR#19)
1385     o AIM become a standard package ; clean unused CPP_kees
1386    
1387    checkpoint35
1388     o subtantial rewrite of dynamics.f
1389     o allows staggered time-stepping
1390     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1391     o added bottom drag (linear + quadratic)
1392    
1393    checkpoint34
1394     o Modified exchange routines for correct reverse simulation.
1395     o Added verification output to comply with bug fix in impldiff.F
1396       as of c33 (exp2, natl_box).
1397     o Corrected store directives in dynamics.F
1398     o Corrected array boundaries in impldiff.F
1399     o Corrected array dimensions in gmredi.
1400       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1401     o Added routine GLOBAL_SUM_INT to global_sum.F
1402     o Added mdsio_gl.F for ECCO purposes.
1403    
1404    checkpoint33
1405     o Fixed bug in lower BC in impldiff.F
1406     o Fixed confusion about units of forcing arrays in FFIELDS.h
1407       namely Fu,Fv,Qnet,Qsw,EmPmR:
1408       - Removed verification/natl_box/code/external_fields_scale.F
1409         (did not differ from that in model/src)
1410       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1411         (see FFIELDS.h for description)
1412       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1413         kpp_calc.F and kpp_transport_t.F
1414       - Removed model/src/external_fields_scale.F and calls to it
1415       - verification/natl_box uses flux data with "atmospheric" sign so
1416         a special version of external_fields_load.F is used to
1417         change the data as it's read in. This way, the arrays
1418         have the right units and signs at all times tha a user could
1419         possibly use them.
1420     o Corrected genmake to delete a temporary file during configuration
1421    
1422    checkpoint32
1423     o Scaling of forcing fields moved from external_forcing.F to
1424       external_fields_scale.F, called directly after loading fields.
1425     o Surface relaxation terms added to surface tendency fields in
1426       extra subroutine.
1427     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1428       fields.
1429     o Changes in GMRedi to comply with packaging structure.
1430     o Modifications and bug fixes in KPP package.
1431     o Verification experiment for KPP added (verification/nat_box/)
1432    
1433    checkpoint31
1434     o Packages interface brought in line with defined standard
1435       -> new routines packages_...F
1436       -> changes in initialise_fixed.F, initialise_varia.F
1437       -> enables initialisation interface for ECCO package
1438     o Rescaling of external forcing fields immediately after read
1439       (removed from external_forcing.F)
1440       -> new: surface_fields_scale.F
1441       -> affects ini_foorcing.F, external_fields_load.F
1442     o Computation of surface tendencies before tendency updates.
1443       -> new: external_forcing_surf.F
1444     o Change of variable names useGMRedi, useKPP, useECCO
1445     o Further changes in dynamics.F, impldiff.F for TAMC
1446     o Tested for experiments 0, 2, 4.
1447       - not yet tested for GMRedi.
1448       - not yet tested for KPP.
1449    
1450    checkpoint30
1451     o Updates for OBCs
1452     o New experiment for test OBCs (internal_wave)
1453     o New output.txt in verification/exp4/results/
1454     o Updates for KPP: calculation of viscosity corrected, new variables
1455       kpp_dumpFreq and kpp_taveFreq
1456     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1457       and entry for T90 in genmake
1458    
1459    checkpoint29
1460     o packaged KPP and GM/Redi
1461    
1462    checkpoint28
1463     o Corrected initialization of hFacMin for difference vertical coordinates
1464     o Modified calculation of partial cell thickness to more robust algorithm
1465     o config_summary.F: replaced write_1D_... by write_0D_...
1466       read_write.F: added subroutines write_0D_...
1467     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1468       included some initialisations required for TAMC.
1469     o routine calc_isoslopes: modified sqrt computation to make it
1470       differentiable for zero argument.
1471     o routines dynamics, impldiff:
1472       included store directives and tape key computations required for TAMC.
1473     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1474    
1475    checkpoint27
1476     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1477       formulation works properly with variable resolution.
1478     o restructured the calling tree between the_model_main() and dynamics()
1479     o split initialise() into initialise_fixed() and initialise_varia()
1480     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1481       in new routine ini_psurf()
1482    
1483    checkpoint26
1484     o moved some #ifdef in optional routines to encompass everything
1485       except the argument declarations. This was using up some memory.
1486     o fixed macros like _ADT to work with both versions of Linux cpp
1487     o cleaned up some unused and uninitialized variables
1488       (helps when debugging with strict compile options)
1489     o split up CPP_EEOPTIONS.h into options and macros
1490       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1491     o patch for 2 processor JAM mode
1492    
1493    checkpoint25
1494     o updates for OBCs and NH
1495     o dramatically reduced memory usage
1496     o added "JAM" routines for use on Artic network
1497     o parameterization of convection by implicit vertical diffusion
1498     o added a diagnostic of convective index
1499     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1500       (this is was partly for OBCs and NH but also in anticipation of
1501        an explicit free-surface option)
1502     o initial state input files for U and V
1503    
1504    checkpoint24
1505     o Removed some spurious "REAL"s
1506     o Updated KPP to latest version from JPL
1507     o Added a COS(latitude) in horizontal viscosity
1508    
1509    checkpoint23
1510     o Added del^4 diffusion for salt and temperature
1511     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1512    
1513    checkpoint22
1514     o Made many small changes: implicit none, format(i5), etc...
1515     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1516    
1517    checkpoint21
1518     o Introduced new I/O package that supports direct-access records (mdsio.F)
1519     o Split-up mid-level I/O routines
1520     o Updated input data for experiments 0,1,2,4 and 5
1521     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1522    
1523    checkpoint20
1524     o Tidied up open-boundaries some more
1525     o Added non-hydrostatic code
1526     o Fixed some input data
1527     o Modified MPI start-up to work in "coupled" context.
1528    
1529    checkpoint19
1530     o Tidied up directory structure for verification experiments.
1531     o Added new code for open boundaries.
1532     o Corrected advective terms near boundaries.
1533     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1534     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1535     o Split default parameters out of ini_parms.F into set_defaults.F.
1536    
1537    checkpoint18
1538     o Further changes for optional code generation with
1539       CPP - ugh!
1540    
1541    checkpoint17
1542     o Beginning to incorporating modularity
1543       for supporting atmos. and ocean configs.
1544     o Small changes for TAMC complinace
1545     o New ultra simple test case. Barotropic box
1546       configuration "exp0".
1547    
1548    checkpoint16
1549     o Minor changes to exchange routines to support
1550       accumulation in reverse mode. Adjoint of an
1551       assignment is an addition.
1552     o Changes to support compilation by TAMC (LR(1)
1553       syntax) and by g77 under Linux ( 72 character
1554       limit ).
1555    
1556    checkpoint15
1557     Rewrote exchange routines to allow
1558     o General tile <-> tile connectivity.
1559     o TAMC reverse mode flag ( is this really needed? )
1560     o Variable width overlap and exchange region widths.
1561     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1562       shmput/shmget, VIA, SYSV shmem and every other cool
1563       communication method.
1564    
1565    checkpoint14
1566     Consistent isomorphism chages made. These allow dynamical core
1567     to support both pressure and meters as a vertical coordinate.
1568    
1569    checkpoint13
1570     Release which corrects global_max problem and a couple
1571     of KGM time-averaging diagnostic errors. Also contains
1572     a double-gyre experiment setup as well as the baseline
1573     4 degree global template. The double gyre template is
1574     organised to allow it to be applied automatically to
1575     the baseline configuration.
1576    
1577    branch-point-rdot
1578     A few tidy-ups have been made bt the real point of this
1579     check-point (excuse the pun) is to allow a branch to be
1580     made for the purposes of adding the rDot alterations.
1581     I don't want to commit the rDot to the main-trunk until
1582     we've actually tested it...
1583    
1584    checkpoint12
1585     Tidy up and added generic genmake script (formerly
1586     configure script).
1587     Released to testers.
1588    
1589    checkpoint11
1590     Re-arranged initialise() and introduced ini_vertical_grid()
1591     and ini_masks_etc().
1592    
1593    checkpoint10
1594     Introduced the configure script.
1595     Separated out the diags package.
1596     Added template for writing time-averages of tile/intermediate quantities.
1597     Updated SIZE.h in exp2 and made the data big-endian.
1598    
1599  checkpoint9  checkpoint9
1600   MPI fix. Filename changes (meta/data). salbin*y stuff.   MPI fix. Filename changes (meta/data). salbin*y stuff.
1601   General tidy-up.   General tidy-up.

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