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revision 1.5 by cnh, Mon Jun 15 05:13:55 1998 UTC revision 1.269 by edhill, Fri Mar 19 05:15:56 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    o MNC:
6      - make myThid the last argument for all subroutines
7      - new default for the grid files: NO halos
8      - add useMNC run-time flag
9    o thermodynamics sea-ice (thsice) is now tested with testreport.
10    o test exp. advect_cs: use the standard cs32 grid ; update output.
11    
12    checkpoint52l_post
13    o new land formulation:
14      a) use ground enthalpy as prognostic variable to ensure exact
15         energy conservation.
16      b) account for water temperature and for latent heat of freezing
17         in all processes (rain, run-off, ground storage)
18      c) compute surface and ground temperature implicitly.
19    o aim_v23 modification for new land model:
20      a) Treat separately land / ocean / sea-ice surface fluxes
21         to allow implicit computation of land & sea-ice surface temp.
22      b) add snow precipitation.
23    checkpoint52l_pre
24    
25    o fix problem (when 1 tile is empty) in min/max monitor.
26    o fix bug in timeAve (u,vZetatave in common block)
27    o no restoring terms under ice for pkg/seaice
28    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
29    o bug fix for pkg/seaice pickups
30    o change MNC call locations and add coordinate attributes
31    o mask vorticity at the corner ; affects global_ocean.cs output
32    o fix ini_curvilinear_grid ; test CS experiments with mpi
33    o aim.5l_cs: modify sea-ice fraction input file ; update output
34    o exf: Adding simple range check routine for exf fields after read
35    
36    checkpoint52k_post
37    o removed top-level directory "diags"
38      - we migrated these functions to pkg/timeave a long time ago
39    o fixed bug introduced in pkg/monitor
40    o accuracy ctrlprec = 32 insuffient for gradient checks using
41      averaged fields (I/O via cost_averages)
42      -> use ctrl.h in active_file*.F to control I/O precision.
43    o paramter list of CALL ADTHE_MAIN_LOOP
44    o added initial do_the_model_io to ecco
45    o set all ...Freq to zero after cost_final
46      taveFreq, dumpFreq, pChkptFreq
47    o MAIN and ECCO differentiability restored
48    
49    checkpoint52j_post
50    o fix nchklev in tamc.h for global_ocean...
51    o Bringing flow and store directives up-to-date
52    o Really weird thing!
53      call do_the_model_io from the_main_loop with parameters
54      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
55      TAF places a faulty re-call of initialise_varia
56      after cost_final call which should not be there!
57    checkpoint52j_pre
58    
59    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
60      error messages
61    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
62    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
63      debug output
64    o modfied mdsio_writefield.F to handle non-global files under exch2
65    o update AIM Cubed-Sphere exp (aim.5l_cs):
66      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
67    o update AIM Equatorial Channel exp:
68      use standard aim_v23 pkg and change the SST fields to be more realistic.
69    o globalFile now works with exch2
70    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
71      mon_vort3.F to make exch2 friendly with >1 tile per cube face
72    o limit timeave output for hi-res integrations
73    
74    checkpoint52i_post
75    o removed CPP_EEOPTIONS.h from verification/*/code
76    o updated the tiling for global_ocean_pressure
77    checkpoint52i_pre
78    
79    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
80      the old pkg/aim).
81    
82    checkpoint52h_pre
83    o shortened offending lines in exch2_send_rx?.template
84    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
85    o genmake2: add build & execute test for NetCDF code
86    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
87      old grid files, moved CPP_EEMACROS.h to pkg/exch2
88    o added useSingleCPUIO flag to monitor.F and mon_out.F
89    o added temporary hack for sea-ice dynamics on the cube:
90      metric terms are ignored and it is assumed that
91      there is no sea-ice on cube faces 1, 2, 4, and 5.
92    
93    checkpoint52f_post
94    o added exch2 cube routines to pkg/exch2
95    o modified hs94.cs-32x32x5 to use it
96    o added new grid files to hs94.cs-32x32x5
97    checkpoint52f_pre
98    
99    checkpoint52e_post
100    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
101      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
102    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
103      to work with implicit vertical advection and AB ;
104    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
105    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
106     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
107    checkpoint52e_pre
108    
109    o fix bug in impldiff when Nr=1 or Nr=2.
110    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
111    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
112    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
113      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
114    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
115    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
116    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
117    
118    checkpoint52d_post
119    o re-tiled many expts to allow comparison in multi-processor mode
120      - updated output accordingly
121      - changed hs94.128x64x5 to use intial T from file rather than use the
122        random number generator
123    o add infrastructure in model routines for fizhi and gridalt packages
124    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
125    o changes to permit hi-res, cubed-sphere, configuration
126      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
127      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
128      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
129        of surface winds for the cube
130      (A verification experiment, based on global_ocean.cs32x15, but with
131       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
132       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
133       complete with example surface forcing files and matlab scripts to look
134       at the output and compare it with that of global_ocean.cs32x15.)
135    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
136       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
137       to conform to the common rule.
138    o check-in the first version of the coupler + interfaces for multi-components
139       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
140       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
141       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
142       - ocean and atmos. share the same horizontal grid (no interpolation).
143       - exchanges between component and coupler is done in forward_step
144    o new verification experiment, cpl_aim+ocn:
145       coupled ocean - AIM atmosphere on cs32 grid.
146    
147    checkpoint52d_pre
148    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
149    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
150    
151    checkpoint52c_post
152    o Fixing OPTIONS files for use of exf:
153      - ALLOW_ECCO not needed
154      - ECCO_CPPOPTIONS.h should not be included from
155        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
156        as has been the case in the past
157      - All cal/exf related options are currently set in
158        single header file. Should remain so until we
159        agree on a consistent new policy.
160    o Removed all CPP options for cal package.
161      cal has no more CPP options.
162    o modified STOREs in GAD_ADVECTION
163    o corrected key comp. for passkey
164    
165    checkpoint52b_post
166    o new version: "thsice" of thermodynamic sea-ice pkg:
167     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
168     - modify fluxes but do not change theta directly;
169     - light cleaning of bulk_force pkg (still needed with thsice).
170     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
171       + output_thsice.txt to test thsice & bulk_force pkgs.
172    o put back grid & coriolis monitor output.
173    checkpoint52b_pre
174    
175    o call "do_the_model_io" at the beginning (=> dump initial state)
176    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
177    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
178      (need info on NUMBER_OF_PTRACERS)
179    o missing PTRACERS headers in some routines
180    o default tamc.h in pkg/autodiff supposed to crash
181      to ensure proper customization
182    
183    checkpoint52a_post
184    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
185      - moved surfaceTendencyTice from pkg/seaice to main code
186      - subroutine FREEZE_SURFACE now limits only surface temperature
187        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
188        => new output.txt for global_ocean.cs32x15 & global_with_exf
189      - keep the old version of FREEZE for backward compatibility;
190        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
191      - corresponding modifs for TAF directives
192    o added surface flux output variables to TIMEAVE_STATVARS
193    o time-averaged output for pkg/ptracers
194    o fix problem with ECCO-related divided adjoint
195      snapshot file was missing some ad-variables,
196      but no warning issued by TAF
197    
198    checkpoint52a_pre
199    o some bug fixes for #undef REAL4_IS_SLOW
200    
201    checkpoint52 = ecco_c52_e35
202    o after testing adjoints of checkpoint51u_post
203    
204    checkpoint51u_post
205    o this is the post-merge tag of the ecco-branch
206      (needs another clean checkout and re-testing)
207    o various natl_box_adjoint configs and results
208      but no input fields
209    o obcs adjoint not yet merged!
210    o adding ECCO global 1x1 and 2x2 degree configs
211    o updated/extended some store directives for seaice
212    o pkg/ecco now containes ecco-specific part of cost function
213    o top level routines the_main_loop, forward_step
214      supersede those in model/src/
215      previous input data.cost now in data.ecco
216      (new namelist ecco_cost_nml)
217    o in ctrl/ cleaned some cross-dependencies and updated CPP options
218    
219    checkpoint51t_post
220    o this is the pre-merge tag of the ecco-branch
221    
222    checkpoint51s_post
223    o cleanup: removed various obsolete #define-s
224    o pkg/grdchk
225      - renamed 'ph-grd 3' to 'grad-res'
226      - merged from ecco-branch
227        (remaining bug fixes for obcs gradient checks)
228      - additional high-precision output for testreport
229        (grep for 'precision_grdchk_result')
230    
231    checkpoint51r_post
232    o cleaned up or removed CPP_OPTIONS.h files
233    o updated results for some of the tests to reflect the new
234      optfiles (-ieee: -O0 instead of -O3)
235    
236    checkpoint51q_post
237    o cd_code:
238      - moved cd_scheme.F -> cd_code_scheme.F
239      - separate read_checkpoint from cd_code_ini_vars.F
240      - separated cd_code part from write_checkpoint
241      - updated AD_SOURCE, generated .flow
242      - added CD_CODE_VARS.h to the_main_loop
243      - Moving cd_code specific store dir.s to pkg/cd_code
244    o ctrl package totally restructured
245      - pack/unpack now optional and decoupled from
246        xx_/adxx_ I/O
247      - ctrl_pack/unpack cleaned
248        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
249      - confined inclusion of AD_CONFIG.h to where necessary.
250    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
251    
252    checkpoint51p_post
253    o create initial cd_code package
254      - WARNING: the initialization of fields within packages
255        is broken because INI_FIELDS (where READ_CHECKPOINT is
256        called) is called *before* PACKAGES_INIT_VARIABLES.
257        This seems to be backwards since
258        1) its important to initially zero the entire field including
259           the "halo" region
260        2) zeroing needs to be done *before* reading pickup info
261           and the pickup call might or might not happen in any
262           particular run
263      - this needs an overhaul for R2
264    o cleanup verification/*/code/GMREDI_OPTIONS.h
265    o cleanup testreport
266    
267    checkpoint51o_post
268    o bringing AD-related verif's up to date with genmake2
269      - carbon/
270      - global_ocean.90x40x15/
271      - hs.94.1x64x5/
272      - (front_relax/ )
273    o (more) consistent directory structure for AD-related verif.'s
274    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
275    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
276    o bug fix in find_alpha.F for MDJWF:
277      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
278        change rho -> rho-rhoConst
279      - replace call find_rho to find_rhonum
280    o initialisation of rFlx extended to full array (required by TAF)
281      and shifted to thermodynamics
282    o removed PTRACERS.h in ptracers routine
283    o added surfacetendencyPtr to S/R parameter list pracers_forcing
284    o Correcting initialisations for fVerU, fVerV.
285    o helping TAF to recognize dependency on kUp for
286      fVerU, fVerV
287    o Replacing delZ by delR in pkg/ctrl/
288    checkpoint51o_pre
289    
290    o undid all of cp51 pending some cleanups and discussion
291    o added the [#include "AD_CONFIG.h"] statement to all files that need
292       it for adjoint/tl #defines
293     o re-worked the build logic in genmake2 to support AD_CONFIG.h
294     o removed tools/genmake since it no longer works
295    
296    checkpoint51n_post
297    o modifications to make FREEZE flux visible to pkg/kpp
298      - moved surfaceTendencyTice from pkg/seaice to main code
299      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
300      - subroutine FREEZE now limits only surface temperature
301        (this means new output.txt for global_ocean.90x40x15,
302         global_ocean.cs32x15, and global_with_exf)
303    o added surface flux output variables to TIMEAVE_STATVARS
304    
305    checkpoint51n_pre
306    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
307    o added [#include "AD_CONFIG.h"] to all files that use the following
308      defines:
309      - ALLOW_ADJOINT_RUN
310      - ALLOW_TANGENTLINEAR_RUN
311      - ALLOW_ECCO_OPTIMIZATION
312    
313    checkpoint51m_post
314    o incorporating changes to get TAMC/TAF working in genmake2
315      - added new TAMC/TAF targets to the Makefile
316      - various cleanups related to package handling
317      - these changes should have no impact on the forward model
318    
319    checkpoint51l_post
320    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
321     - faster algorithm for cal_addtime.F
322     - higher precision arithmetic, where needed
323     - pkg/exf *startdate variables changed from calendar date to
324       model integration time
325    
326    checkpoint51l_pre
327    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
328    o enable to apply restoring on S & T only in a latitude band.
329    o update output (external_forcing_surf modif. change truncation errors)
330       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
331    
332    checkpoint51k_post
333    o change default to: useNHMTerms=.FALSE.
334     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
335       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
336     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
337        exp1, ideal_2D_oce
338     - change data file of oceanic exp (leave the results unchanged for now)
339       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
340    o set gravitySign automatically according to the vertical coordinate used
341      (and change sign: back to "logical" value: +1 when R increases downward)
342    o added an include barrier to the default CPP_OPTIONS.h and
343      removed the #include "PACKAGES_CONFIG.h" from it
344    o fix a bug in mom_fluxform (from chk51j_post)
345    
346    checkpoint51j_post
347    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
348    o adjusted some flow directives (dynamics, thermodynamics)
349    o added cubed-sphere case to test cost function
350    o heckpoint_lev?_directives.h now include
351      pkg-specific directives, whenever those are enabled.
352    o Moving pkg-specific flow directives to corresponding pkg
353      Moving pkg-specific differentiation list to corresponding pkg
354      Moving pkg-specific checkpoint-lev storing to corresponding pkg
355      ---> conventions are
356           - pkg_ad.flow
357           - pkg_ad_diff.list
358           - pkg_ad_check_lev?_dir.h
359    
360    checkpoint51i_post
361    o merge of the branch-genmake2
362      - knowingly breaks the older genmake
363      - automatic generation of all ALLOW_${PKG_NAME} defines
364      - new testreport supersedes older testscript
365    o large number of package inclusion and header cleanups
366    checkpoint51i_pre
367    
368    o new output for adjoin of global ocean vector invariant
369    o fix for checkpoint of thermodynamic seaice and bulk_force
370    o Steph gchem various cleanups
371    
372    checkpoint 51h_pre
373    o fixed some single quotes
374    o modify gchem pkg to be more versatile
375    o modifications to clean up dic pkg
376    o add pkg/cfc
377    
378    checkpoint51g_post
379    o provide links for ARPACK and ADM*TLM
380    o start removing verification/vero/
381    o update AD-related stuff
382      (in particular some IF-statements in model/src/ routines)
383    o adding to verification/global_ocean.90x40x15/ adjoint of
384      vector invariant setup
385    
386    checkpoint51f_post
387    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
388    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
389      of tracer Green's fucntions for ocean inversion project.
390    
391    checkpoint51f_pre
392    o Added on-the-fly spatial interpolation capability
393        "USE_EXF_INTERPOLATION" to pkg/exf.
394      - This is a temporary Cartesian-grid hack until
395        the super-duper ESMF coupler becomes available.
396      - See verification/global_with_exf/README for usage example.
397      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
398        flags and modified pkg/seaice accordingly.
399    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
400        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
401        non-local transport term.
402    
403    checkpoint51e_post
404    o pkg/mom_vecinv:
405      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
406      - add time-ave diagnostic of vorticity advection.
407    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
408    o atmospheric geopotential: - include water vapor effect;
409                                - use p^kappa in p* scaling.
410    o land pkg: read initial state from files.
411    o AIM : add stratospheric drag in the upper level
412    
413    checkpoint51d_post
414    o change function ILNBLNK (=> last non-blank char.) to return zero
415      (instead of the string length) when the string. char is empty
416    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
417    o modif's to restore TAMC compatibility
418      - avoid "_d" constructs in PARAMETER declarations
419      - avoid interrupting lines by comment lines
420    o Use cluster local disks for purely local I/O
421      vs. globally visible disks needed for ctrl stuff
422      (merged from ecco-branch)
423      - new active_file_loc... and mdsio_..._loc routines
424      - affected packages: autodiff, ctrl, grdchk, mdsio
425    
426    checkpoint51c_post
427    o introducing integer flag debugLevel
428      - debLevZero: suppress all output
429      - debLevA: standard
430      - debLevB: equivalent to current debugMode=.TRUE.
431    o introducing pathname variable mdsioLocalDir for mdsio
432      that can be specified at runtime
433      (relevant for cluster I/O to local disk)
434    `
435    >>>checkpoint51b_post
436    adjoint of ptracers
437    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
438    o extended state in checkpoint_lev?, etc.
439    o alternative ctrl/cost with tr1 or ptracer
440    o new comlev1_bibj_ptracers
441    o new ptracers.flow
442    o made ptracers_forcing same as external_forcing_s
443    o added verification for adjoint with ptracers
444      - adm. grdchk fail so far
445      - tlm. grdchk OK
446      - checked tapelev/comlev recomputations: OK
447    <<<checkpoint51b_pre
448    
449    checkpoint51a_post
450    o added code for biogeochemistry package
451      - new pkgs: dic, gchem
452      - new subroutine in ptracers
453    o modify code for biogeo packages
454      - in model/src and pkg/ptracers
455    
456    checkpoint51
457    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
458      - autodiff, ctrl, exf, grdchk, seaice
459      kept separate packages
460      - cost, ecco, obcs
461    o updating verification/internal_wave, verification/lab_sea
462      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
463    
464    checkpoint50i_post
465    o Preparing next differentiable checkpoint and sync
466      of MAIN vs. ecco-branch
467      - 1st step: this one is differentiable
468      - 2nd step: next(! not this) checkpoint will have updated packages
469                  from ecco-branch)
470    
471    checkpoint50h_post
472    o new package "land": provide surface BC for AIM.
473    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
474    o AIM: use true log-P extrapolation for near surface temp (= as in
475        F.Molteni paper) ; update aim.5l_cs output.
476    o New variable in PARM03 for more flexible pickups
477    o somewhat cleaned package initialisation sequence for
478      ctrl/ cost/ ecco/ in packages_... routines
479    
480    checkpoint50g_post
481    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
482      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
483      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
484        made the default because of faster convergence than ADI
485    
486    checkpoint50f_post
487    o exf totally restructured
488      - replaced all exf_set_ routines by one generic exf_set_gen.F
489        and made sure it's still differentiable
490      - split exf_getffields.F into new exf_bulkformulae.F
491      - exf_inscal_/exf_outscal_ suffixes consistent with field names
492      - updated adjoint/makefile and relevant verif. accordingly
493    
494    checkpoint50f_pre
495     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
496          + change Evap over land. (update aim.5l_cs output)
497     o added missing .cvsignores and made uniform across expts
498     o changed configuration of tidal_basin_2d expt
499     o added pkg/debug functions for tracing code in fatal crashes
500     o tidied pkg/monitor to use MONITOR_OPTIONS.h
501     o new fn in pkg/monitor to stop model if solution grows too big
502     o removed lots of single quotes from comments
503    
504    checkpoint50e_post
505    o make KPP work with PTRACERS
506     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
507       nearly a copy of kpp_transport_s
508     - there is no analogue to SurfaceTendencyS, so I have to use
509       gPtr(of the surface layer) instead
510    o add a new platform SunFire+mpi (SunFire 15000) to genmake
511    checkpoint50e_pre
512    
513    checkpoint50d_post
514    o change kpp output from multiple-record state files to single-record state
515      files analogous to write_state.F
516    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
517      analogous to the cg2d-related output.
518    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
519      so that writing to internal file fn (with length 512) fails.
520    checkpoint50d_pre
521    
522    checkpoint50c_post
523    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
524    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
525    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
526    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
527    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
528    
529    checkpoint50c_pre
530    Merging from release1_p13:
531    o bug fix for pkg/seaice dynamic solver
532    o Added SEAICE_initialHEFF to pkg/seaice
533    
534    checkpoint50b_post
535    o store u*,v* in gU,V instead of in guNm1,gvNm1
536    o in order to put the momForcing out of the Adams-Bashforth:
537      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
538      to timestep.F
539    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
540    o re-generate output for highly sensitive test-exp:
541       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
542    
543    checkpoint50b_pre
544    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
545    o corrected CPP option mismatch in exf_Bulk... functions for case
546      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
547    
548    checkpoint50a_post
549    o Bug fix for merging between c50 and KPP.
550      ikey was passed from thermodynamics to kpp_calc via
551      common block rather than being recomputed in kpp_calc,
552      in contradiction with new key itdkey.
553      New key ikppkey created, and tamc.h headers updated.
554    
555    checkpoint50
556    - 2nd step of merge with ecco-branch:
557      merge changes in ecco-branch back into main trunk
558    - bug fix in find_alpha
559    - more storing in gmredi_calc_tensor.F, kpp_routines.F
560    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
561    - merged some sliced AD support routines
562    
563    checkpoint49
564    merged from ecco-branch:
565    o exf:
566      - Enable initialisation of forcing fields to constant
567        (runtime) values.
568      - in exf_getffields.F
569        Reduce i-/j-loop to interior domain, discarding overlaps.
570        That also fixes wrong TAF-key computations for key_1, key_2
571        with bulf formulae.
572      - exf_init.F modify #ifdef for exf_init_evap
573      - exf_getffieldrec.F, ctrl_getrec.F
574        The following INT-usages are not safe:
575          fldsecs  = int(fldsecs/fldperiod)*fldperiod
576          fldcount = int(fldsecs/fldperiod) + 1
577        and were modified.
578    o autodiff: checkpoint_lev...
579      - updated storing for bulk formulae (some arrays were missing)
580      - added state for seaice package
581      - synchronized with main branch
582    o DIVA:
583      Modif.s in
584      - the_main_loop.F
585      - the_model_main.F
586      and added cost_final_restore.F cost_final_store.F
587      o With these changes, it is possible to fully separate
588        the first forward run to compute the cost function (mdthe_main_loop)
589        and adjoint runs over individual DIVA intervals (adthe_main_loop)
590        into separate model executions.
591        This enables better tuning of DIVA to given queue sizes.
592      o Loss of cost function value in consecutive DIVA runs is
593        fixed by storing to 'costfinal' file.
594      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
595        beginning/end of adjoint integration is accounted for.
596      The current changes apply to TAF-1.4.26.
597      TAF has one remaining bug, requiring one manual change
598      (see MITgcm manual).
599    o cal: synchronized between MAIN and ecco-branch
600    
601    checkpoint48i_post
602    o Changes to restore differentiability of code w.r.t. previous tag
603      (mostly adding new routines to make list and replacing
604      pressure by totPhiHyd).
605    o Updated and merged grdchk package
606      - has both ADM and TLM checks
607      - works for single- and multi-proc.
608      - output cleaned
609      - worked successfully for parallel DIVA
610    o genmake:
611      - Adding -platform=SP4
612      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
613    o Modif. for DIVA:
614      ctrl_unpack should not be called in intermediate DIVA interval.
615      (similar thing would apply for active files such as
616      tbar, sbar, psbar, which should not be reinitialised;
617      only relevant for ecco-branch)
618    
619    checkpoint48h_post
620    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
621    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
622    o Added SEAICE_initialHEFF to pkg/seaice
623    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
624    
625    checkpoint48g_post
626    --- EOS:
627    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
628      store total Potential in totPhyHyd for diagnostics & EOS.
629    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
630    --- Pressure/geopotential gradient:
631    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
632    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
633      ( changes results of global_ocean_pressure )
634    o NLFS + z-coord.: add eta*Rho' contribution.
635    o accurate phiHyd when using interface-W at the middle between 2 centers
636     ( changes results of ideal_2D_oce )
637    o includes r* 2nd term in potential gradient.
638    
639    checkpoint48f_post
640    Merging from release1_p12:
641    o Modifications for using pkg/exf with pkg/seaice
642      - improved description of the various forcing configurations
643      - added basic radiation bulk formulae to pkg/exf
644      - units/sign fix for evap computation in exf_getffields.F
645      - updated verification/global_with_exf/results/output.txt
646    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
647      (SBO) core products, including oceanic mass, center-of-mass,
648      angular, and bottom pressure (see pkg/sbo/README.sbo).
649    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
650      to avoid negative values in shallow regions.
651      - updated verification/natl_box/results/output.txt
652      - updated verification/lab_sea/results/output.txt
653    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
654    o Added useSingleCpuIO option (see PARAMS.h).
655    o Updated useSingleCpuIO option in mdsio_writefield.F to
656      work with multi-field files, e.g., for single-file pickup.
657    o pkg/seaice:
658      - bug fix in growth.F: QNET for no shortwave case
659      - added HeffFile for specifying initial sea-ice thickness
660      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
661    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
662      kpp_transport_t.F, forward_step.F, and the_main_loop.F
663    o pkg/seaice:
664      - adjoint-friendly modifications
665      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
666    
667    checkpoint48e_post
668    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
669    o dynamics: change definition of computational domain & adapt mom_fluxform
670      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
671    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
672        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
673        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
674        global_ocean.90x40x15 global_with_exf global_ocean_pressure
675        inverted_barometer solid-body.cs-32x32x1
676      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
677    
678    checkpoint48d_post
679    o in preparation for r*:
680     a) use pre-computed gradient of hydrostatic potential:
681        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
682     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
683        => affects results of glob_oce_pressure (different truncation error)  
684      update output.txt of ideal_2D_oce & global_ocean_pressure
685    
686    checkpoint48d_pre
687    o in preparation for r*:
688      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
689      pass the 2 comp. of the grad. as arguments to momentum S/R.
690      but for the moment, only used if it does not change the results.
691    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
692    
693    checkpoint48c_post
694    Modifications in treatment of initial flux forcing controls
695    to avoid extra storing of flux fields.
696    
697    checkpoint48c_pre
698    o Added tidal_basin_2d experiment (currently 1D!)
699    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
700    
701    checkpoint48b_post
702    o r* coordinate added in #ifdef NONLIN_FRSURF block.
703     (modification to pressure gradient not yet implemented)
704    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
705      (for U & V) that are used for vertical advection of momentum.
706    
707    checkpoint48a_post
708    o In preparation for r*, use temp. array to compute vertical transport
709       in flux-form momentum pkg. => change results of few test-exp.
710      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
711                        lab_sea, natl_box & plume_on_slope
712    
713    checkpoint48
714    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
715    
716    checkpoint47j_post
717    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
718    o moved adexch from forward_step to addummy_in_stepping
719    o added exch in ctrl_map_...
720    o aveFreq.=0. at end of cost_final to avoid overwrite in
721      reverse checkpointing loop
722    o Yet more changes in gmredi:
723      * adgmredi_calc_tensor
724        avoiding all recomputation of gmredi_slope_limit
725      * adgmredi_x/y/rtransport
726        added flag for excessive storing to avoid recomp. of
727        u/v/rtans, dTdx/y/z
728        -> this is not really necessary and very memory-consuming
729      * adgmredi_slope_psi:
730        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
731      * gmredi_slope_limit
732        re-activated full calculation of taperfct for case 'ac02'
733    o updating verification/ adjoints of carbon, global_ocean.90x40x15
734    
735    checkpoint47i_post
736    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
737    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
738      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
739    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
740    o gmredi: fix few bugs.
741    
742    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
743    This will be a good checkpoint to plug into the ecco-branch.
744    o few modif.'s to get latest version adjointed
745      (mainly kick out code in ini_linear_phisurf)
746    o modif's to run adjoint with exactConserv
747    o case GM_BOLUS_ADVEC should be cleaned
748      S/R gmredi_slope_psi should be cleaned
749    o verification/carbon now has exactConserv=.TRUE.
750    
751    checkpoint47g_post
752    o time-average AIM output: becomes independent from statvars time-average
753      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
754    o After TAF bug fix:
755      Tested adjoint of gmredi package.
756      Tests were done with checkpoint47 rather than with latest
757      checkpoint47f_post since the latter is broken for the adjoint
758      verification/carbon/ contains both ADM and TLM gradient checks.
759    Here they are, before they get changed/lost/stolen.
760    Mostly modif.'s to fix numerical sensitivities.
761    Gradient checks OK for
762    - GM_taper_scheme:
763      * clipping
764      * ac02
765      * linear
766      * glw91
767      * dm95
768      * ldd97
769    - GMREDI_OPTIONS:
770      * GM_VISBECK_VARIABLE_K
771      * GM_NON_UNITY_DIAGONAL
772      * GM_EXTRA_DIAGONAL
773      * GM_BOLUS_ADVEC
774    in conjunction with data.gmredi parameters to be checked in
775    in a few minutes under verification/carbon/code/
776    
777    checkpoint47f_post
778    Merging from release1_p10:
779    o modifications for using pkg/exf with pkg/seaice
780      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
781        and SEAICE_EXTERNAL_FLUXES
782      - pkg/exf CPP options EXF_READ_EVAP and
783        EXF_NO_BULK_COMPUTATIONS
784      - usage examples are Experiments 8 and 9 in
785        verification/lab_sea/README
786      - verification/lab_sea default experiment now uses
787        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
788    
789    checkpoint47e_post
790    o created a tag prior to creating a branch
791    
792    checkpoint47d_post
793    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
794      at the bottom boundary had an erroneous half slip boundary condition
795    o added bottom drag and no slip boundary condition capabilities to
796      oceanic pressure coordinates code
797    o added new verification experiment global_ocean_pressure, this experiment is
798      also described in the tutorial section of the manual
799    checkpoint47d_pre
800    
801    checkpoint47c_post
802    o Added a verification experiment for a global cubed-sphere ocean run
803      -  verification/global_ocean.cubed32x32x30
804      -  uses pkg/therm_seaice and pkg/bulk_forcing
805    
806    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
807    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
808      when using P-coordinate; only implemented for atmospheric config.
809    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
810      NOTES: requires option NONLIN_FRSURF to be "#define".
811    o update advect_xz/results/output.txt (left from checkpoint44g_post)
812    
813    checkpoint47b_post
814    Merging from release1_p9:
815    o pkg/seaice
816      - removed GOTO's and added taf directives
817      - double precision constants to reduce the g77 (Linux)
818        to F77 (SGI) differences reported in release1_p8
819    o tools/genmake
820      - added SGI options
821    o verification/testscript
822      - updated to that of checkpoint47a_post
823    o verification/global_ocean.90x40x15/input/eedata
824      - modified for SGI f77 compatibility
825    o verification/lab_sea
826      - added description of sea-ice model
827      - added missing matlab routines
828      - added test of thermodynamics parallelization
829    
830    checkpoint47a_post
831    o new pkg: aim_v23
832     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
833       for now, keep the same surface forcing as before.
834     - Part-Cell implemented into AIM; check that Heat & Water are conserved
835     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
836     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
837    o add diagnostic of surface correction term in monitor output
838    
839    o bulk_force and therm_seaice
840    - Two packages:  bulk_force (Bulk forcing)
841      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
842    - Earlier integration from Stephaine Dutkiewicz
843      and Patrick Heimbach.
844    - Two ifdef statements for compile time,
845       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
846    
847    checkpoint47
848    differentiable version of checkpoint46n_post
849    o bug fix in quasihydrostaticterms
850    o * "clean" adjoint code (in terms of extensive recomputations)
851        can now be obtained for all GMREDI options (i.e. for
852        - GM_VISBECK_VARIABLE_K
853        - GM_NON_UNITY_DIAGONAL
854        - GM_EXTRA_DIAGONAL
855        - GM_BOLUS_ADVEC )
856      * However, wrong gradient check problem remains unsolved.
857      * New CPP options have been introduced for different
858        tapering schemes
859    o external_fields_load now part of differentiation list
860    o pressure needs multiple storing;
861      would be nice to have store_pressure at beginning or
862      end of forward_step, e.g. by having phiHyd global (5-dim.)
863      (NB: pressure is needed for certain cases in find_rho,
864      which is also invoked through convective_adjustment).
865    o recomputations in find_rho for cases
866     'JMD95'/'UNESCO' or 'MDJWF' are OK.
867    o #define ATMOSPHERIC_LOADING should be differentiable
868    o ini_forcing shifted to begining of initialise_varia
869    o Incorporating QNVS line search routines into MITgcm
870      (this is separate code, and therefore not under pkg)
871      lsopt/, optim/
872    o Updated verification/carbon/
873      - #define GM_VISBECK_VARIABLE_K
874      - GM_taper_scheme    = 'ldd97'    
875    
876    checkpoint46n_post
877    Merging from release1_p8:
878    o verification/natl_box:
879      updating new external_fields_load routine
880    o New package: pkg/seaice
881      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
882      The sea-ice code is based on Hibler (1979-1980).
883      Two sea-ice dynamic solvers, ADI and LSR, are included.
884      In addition to computing prognostic sea-ice variables and diagnosing
885      the forcing/external data fields that drive the ocean model,
886      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
887      The implied surface heat flux is then stored in variable
888      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
889      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
890      non-local transport term.  Because this call precedes model
891      thermodynamics, temperature under sea-ice may not be "exactly" at
892      the freezing point by the time theta is dumped or time-averaged.
893      N.B.: fairly large differences in accuracy occur across
894            different platforms/compilers; comparison between
895            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
896            generated output gives:
897       T           S           U           V
898      C D M    c        m  s        m  s        m  s        m  s
899      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
900      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
901      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
902    
903      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
904    o GAD:
905      - generated new common blocks to account for call of
906        same gad routines with differing traceridentities
907        (needed to modify tracerIdentity indices in GAD.h)
908      - generated separate common blocks for case useCubedSphereExchange
909        (Department of Futurology)
910      - parameter lists to gmredi_?transport: added tracerIdentity
911      - added new key indices to tamc.h
912    o external_fields_load:
913      - added this routine to TAF list
914      - needed to make some common blocks global and additional storing
915        along the same lines as exf package (checkpoint_lev?_directives.h)
916    o exf:
917      updated external forcing package
918      - bug fixes carried over from ecco-branch
919        (missing OBCS_OPTIONS.h in two routines)
920      - enable easy to use "no forcing".
921      - added exf I/O for atmospheric loading
922      - added exf I/O for runoff data
923      - transfered scaling between exf <-> MITgcm to exf namelist
924    o Adding new verification experiment global_with_exf.
925      This verification experiment is almost identical to the
926      global_ocean.90x40x15 experiment, except that it uses
927      the exf (and cal) package instead of the
928      external_fields_load routine (cf README file).
929    
930    checkpoint46m_post
931    o modified testscript to return -- when there are no lines of "%MON" output
932    o added new flag "quasiHydrostatic" for QH mode
933      and new routine quasihydrostaticterms()
934    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
935      New routine: mom_u_coriolis_nh()
936    o fixed sign of non-hydrostatic metric terms in u and v equations.
937      Depend on correct sign of gravitySign.
938    o added work.pc* to .cvsignore in aim directories using ifc
939    o introduced flag for controllin non-hydrostatic metric terms
940    o removed gravitySign from PARM04
941    o switched to g77/ifc from pgf77 in aim experiments
942    
943    checkpoint46l_post
944    o made convective adjustment work with pressure coordinates:
945     - changed the direction of k-loop in convective_adjustment.F for the
946       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
947     - adjusted the reference pressure k-index in convective_adjustment.F
948     - adjusted the convection condition in convect.F (in analogy to
949       calc_ivdc.F)
950     - convective_adjustment no longer computes anything on the halos
951     - removed the warnings about negative salinity from find_rho.F and
952       find_alpha.F; instead the new routine look_for_neg_salinity, called
953       at the beginning of find_rho, find_alpha, and find_beta, does a
954       check of the entire slice, if CPP-option
955       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
956    checkpoint46l_pre
957    
958    checkpoint46k_post
959    o fixed the verification/global_ocean.90x40x15 experiment:
960     - new bathymetry (the world according to A., JMC, and M.)
961     - new initial fields and forcing fields (*.bin files)
962     - new POLY3.COEFFS (for the next release one should switch to a full
963       equation of state: JMD95P or MDJWF)
964     - fixed several errors and redundancies in the data file
965     - experiment uses looped cells
966     - added matlab directory with diagnostic scripts for plotting of output
967    
968    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
969     - read AIM physics parameters from a file (data.aimphys)
970     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
971    
972    checkpoint46j_post
973    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
974    o move wVel computation at the end of the time step, in S/R integr_continuity
975    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
976    o update timeave pkg for wVel diagnostic.
977    checkpoint46j_pre
978    
979    checkpoint46i_post
980    o Clean up AIM package (and keep the results unchanged):
981      include CPP_OPTION and use IMPLICT NONE in all routines ;
982      declare all the variables _RL ; use _d 0 for all numerical constants.
983      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
984    
985    checkpoint46h_post
986    o cleaned up the use of rhoNil and rhoConst.
987      - rhoNil should only appear in the LINEAR equation of state, everywhere
988        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
989        and the dynamical equations are all divided by rhoConst
990    o introduced new parameter rhoConstFresh, a reference density of fresh
991      water, to remove the fresh water flux's dependence on rhoNil. The default
992      value is 999.8 kg/m^3
993    o cleanup up external_forcing.F and external_forcing_surf.F
994      - can now be used by both OCEANIC and OCEANICP
995    checkpoint46h_pre
996    
997     Added code to convert surface volume flux (fresh water) into
998     a mass flux when using P coordinates in the ocean (OCEANICP).
999     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1000    
1001    checkpoint46g_post
1002    o Include a new diagnostic variable phiHydLow for the ocean model
1003      - in z-coordinates, it is the bottom pressure anomaly
1004      - in p-coordinates, it is the sea surface elevation
1005      - in both cases, these variable have global drift, reflecting the mass
1006        drift in z-coordinates and the volume drift in p-coordinates
1007      - included time averaging for phiHydLow, be aware of the drift!
1008    o depth-dependent computation of Bo_surf for pressure coordinates
1009      in the ocean (buoyancyRelation='OCEANICP')
1010      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1011        Theta, Salinity, and Pressure in the parameter list. This routine is
1012        presently contained in find_rho.F. This routine does not give the
1013        correct density for 'POLY3', which would be a z-dependent reference
1014        density.
1015    o cleaned up find_rho
1016      - removed obsolete 'eqn' from the parameter list.
1017    o added two new verification experiments: gop and goz
1018      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1019    checkpoint46g_pre
1020    
1021    checkpoint46f_post
1022    o Enable tangent linear (forward mode) gradient checks:
1023      - extended active file handling to g_... files
1024      - added TANGENT_SIMULATION to theSimulationMode
1025      - extended grdchk package accordingly
1026    o added tangent linear setup in verification/carbon/code_ftl
1027    o added adjoint setup in verification/front_relax/code_ad
1028    
1029    checkpoint46e_post
1030    o Added new equation of state -> MDJWF
1031      - EOS of McDougall et al., 2002, JAOT, submitted
1032      - caveat: the equation of state is only valid for a smaller (more
1033        realistic?) range of values than JMD95P/Z and UNESCO
1034      - added masks to the calculation of pressure in store_pressure
1035      - added more check values for density in check_eos (ini_eos.F), some of
1036        the old check values are out of the range of the MDJWF-eos, so don't
1037        expect perfect matches for those
1038    checkpoint46e_pre
1039    
1040    checkpoint46d_post
1041    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1042      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1043      case of pressure coordinates. eosType='JMD95Z' in
1044      combination with buoyancyRelation='OCEANICP' now causes an error.
1045    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1046      in find_alpha/beta.
1047    checkpoint46d_pre
1048    
1049    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1050      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1051    
1052    checkpoint46c_post
1053    o Changes necessary for ocean in p-coordinates
1054     -  Added new buoyancy relation = 'OCEANICP'
1055     -  Added new parameters = gravitySign (this used to be contained inside
1056        the factor dRdZ which I added when we first switched to R coordinates).
1057     X GM/Redi is not compatible (yet)
1058     X bottom drag and no-slip need to be debugged.
1059    checkpoint46c_pre
1060    
1061    checkpoint46b_post
1062    o Added new equation of state -> JMD95Z and JMD95P
1063      - EOS of Jackett and McDougall, 1995, JAOT
1064      - moved all EOS parameters into EOS.h
1065      - new routines ini_eos.F, store_pressure.F
1066    o Added UNESCO EOS, but not recommended because it requires
1067      in-situ temperature (see JMD95)
1068    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1069      unesco.f to be used with POLY3
1070    checkpoint46b_pre
1071    
1072    checkpoint46a_post
1073    o Added (atmospheric) pressure loading
1074      - new field in FFIELDS.h, etc...
1075      - new cpp flag ATMOSPHERIC_LOADING
1076    o Changed hFacC to _hFacC in calc_phi_hyd.F
1077    o Added SHORTWAVE_HEATING to some files for consistency
1078    checkpoint46a_pre
1079    
1080    checkpoint46
1081    further merges from release1_p5
1082    o new ctrl package
1083      - adopted from ECCO environment to enable optimization
1084      - added Eliassen Palm fluxes to controls
1085    o added Eliassen Palm flux controls to gradient check package
1086    o cost package
1087      - Compatible with new ctrl package
1088      - added Eliassen Palm cost hooks
1089      - modif's of existing cost functions
1090    o Adjoint-related bug fixes in kpp:
1091      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1092      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1093    o autodiff package
1094      - flow directives:
1095        + new for S/R do_the_model_io
1096        + enhanced for S/R checkpoint
1097        + new gmredi.flow
1098      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1099        disable adcommon.h/g_common.h by default.
1100      - fixed problem for adjoint of global_max
1101    o modified verification/carbon/
1102    o New setup for adjoint of global_ocean
1103    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1104    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1105    o incorporated hooks for sponge layer code (external_forcing.F)
1106    
1107    checkpoint45d_post
1108    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1109    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1110      (affects plume_on_slope "cg2d" output)
1111    o add new parameter deltaTfreesurf for free-surface time stepping
1112    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1113    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1114    o change phiMin in exp1 (to agree with documentation)
1115    o add new flags:
1116     - T,S forcing inside/outside Adams-Bashforth
1117     - turn off temp,salt advection and/or forcing
1118     - for each tracer, define internal flag for multiDimAdvection & A-B
1119    o monitor: change definition of KE to check conservation of Energy
1120    
1121    checkpoint45c_post
1122    o Removed f90 comments ("!")
1123    o Modified initialisations to enable exf package for MITgcm
1124      (without invoking ECCO_PACKAGE).
1125    o modifications to gradient check package (Martin Losch)
1126      - enable centered differences
1127      - modified format of standard output
1128    
1129    checkpoint45b_post
1130    o cleaned exchange calls in cg2d
1131    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1132    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1133      to configure barotropic setup (Martin Losch)
1134    o moved some initialisations within bi,bj loop in dynamics
1135      (TAF flow dependency)
1136    o in initialise_varia, moved call packages_init_variables
1137      before convective_adjustment_init
1138      (corresponding adjustment of TAF tape initialisation).
1139    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1140    
1141    checkpoint45a_post
1142    o compute Rho over the whole domain (extend iMin,jMin indices)
1143    o specific exchange for X-slice domain (case Ny=1)
1144    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1145    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1146    
1147    checkpoint44h_post = checkpoint45
1148    o Fix to restore differentiability:
1149      place at which packages_init_variables is called in
1150      initialise_varia is crucial for reverse control flow.
1151    o modifications in GMRedi to enable stable adjoint
1152      (corresponding modif's in thermodynamics, dynamics)
1153    o added missing hook for sponge layer code in external_forcing
1154    o modified test cost functions
1155    o storing in gad_advection (plus removal of write(0,*)!
1156    o missing headers TR1.h added in convective_adjustment routines
1157    o errorMessageUnit set non-equal zero in eeboot
1158      (conflict on some platforms, e.g. IBM SP3)
1159    o modified carbon verif.
1160    
1161    checkpoint44h_pre
1162    o vertical grid option: allow to put the Interface at the middle between
1163      2 cell-centers ; replace delZ in pkg/kpp by drF.
1164    o GM Advective form: Tracers are advected using the residual transport (=
1165      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1166    
1167    checkpoint44g_post
1168    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1169      results) ; ifdef missing in thermodynamics.F
1170    
1171    checkpoint44f_pre,checkpoint44f_post
1172    o added PTRACERS package
1173      This allows an arbitrary number of passive tracers to be integrated
1174      forward simultaneously with the dynamicaly model.
1175      + Implemented so far:
1176        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1177        - I/O and checkpointing
1178        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1179      + Not implemented so far:
1180        - KPP
1181        - OBCS
1182      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1183        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1184        line in data.pkg.
1185      + This package is disabled by default since it increases storage.
1186    
1187    
1188    o testscript: added -cleanup option
1189    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1190                 b) enable to filter 2D fields.
1191    
1192    checkpoint44e_pre,post
1193    o re-wrote convective adjustment to use pre-calculated weights
1194      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1195      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1196      Original calls to convect() still in place.
1197    
1198    chkpt44d_pre,post
1199    o added missing EXCLUDE_MONITOR flags
1200    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1201      (incompatible typ in MIN/MAX expressions caused problems
1202      on IBM SP3)
1203    o in genmake added variable MAKEDEPEND
1204      plus resetting for case SunOS
1205    o added timer_stats.c routine for IBM SP3
1206    o removed variables in dynamics
1207    !!! I forgot to create tag chkpt44d_pre !!!
1208    !!! But chkpt44d_pre = chkpt44c_post    !!!
1209    
1210    o real fresh water flux implemented with non-linear free-surface.
1211    
1212    chkpt44c_pre,post
1213    o few fix (mask in shap_s2, EmPmR in external_field_load,
1214      USE_NATURAL_BCS in solve_for_P);
1215    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1216    
1217    checkpoint44b_pre/_post
1218    o merge of relevant stuff from the ecco-branch:
1219      - genmake: removed $S64 overwrite for case SunOS
1220      - pkg/exf: update and corrections for field swapping and obcs
1221      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1222                  harmonized between ECCO and MITgcm
1223      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1224                      updated checkpointing_lev... lists for obcs
1225      - model/src: minor changes in forward_step, plot_field
1226                   added directive for divided adjoint in the_main_loop
1227      - pkg/mdsio: added mdsio_gl_slice
1228    
1229    o check parameters & config (chkpt44a_pre,post)
1230    o OBC and NonLin_FrSurf.
1231    
1232    checkpoint44
1233    o fix bug in mom_vi_del2uv
1234    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1235    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1236    o update AIM experiments (NCEP input files)
1237    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1238    o added some stuff for AD
1239    
1240    checkpoint43
1241    o added two new advection tests
1242    o added global 4x4 degree ocean test
1243    o added test of H&S94 with free surface on cube
1244    o some final mods for gradient check, adjoint,...
1245    
1246    checkpoint42
1247      Fixed AD-related problems:
1248    o Store directives up-to-date with re-arranged Adams-Bashforth
1249      (mainly thermodynamics.F)
1250    o New store directives for multi-dim. advection schemes
1251      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1252      * new common block and key passkey
1253      (mainly gad_advection.F)
1254    o Modified store directives for split of dynamics/thermodynamics
1255      for the case ALLOW_KPP
1256    o Cleaned argument list for timestep_tracer.F
1257    
1258    checkpoint41
1259    o re-formatted/added comments in prologues of key subroutines
1260      to work with protex
1261    
1262    checkpoint40
1263    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1264    o added FLT (floats) package from Arne along with demo. experiment
1265    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1266      implementation of forward-in-time forcing terms
1267    o more mods for non-linear free-surface including new variable
1268    o modified multi-dim method to work on cube
1269    o bug fix in KPP (from DM)
1270    
1271    checkpoint40pre9
1272    o added DST advection schemes
1273    o fix MPI bug on SGI's
1274    o modifications for non-linear free-surface
1275    o fixed conditionals for fixed flow/passive tracer only mode
1276    o added tension/strain form of stress tensor
1277    o changes to commenting of arguments for TAF/TAMC
1278    o added/updated many matlab scripts
1279    o added multi-dimensional advection method for tracers
1280      
1281    checkpoint40pre8
1282    o new package rw/
1283      Added method for dumping intermediate local arrays:
1284      mdsio_writetile - same as mdsio_writefield except works from inside
1285                        bi,bj loop
1286      mdsio_writelocal - same as mdsio_writetile except works for local
1287                         arrays
1288      write_local_r? - higher-level wrapper for mdsio_writelocal
1289      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1290      Example given at end of mom_vecinv.F that dumps some local arrays.
1291    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1292      control flux-form versus vector invariant code.
1293      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1294      or genmake -DISABLE ...
1295    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1296      (additional storing is now needed for case vecinv;
1297      currently nothing implemented to switch this storing off
1298      in case fluxform is used since no CPP flag available).
1299    
1300    checkpoint40pre7
1301    o bug fix in dynamics.F
1302      calc_viscosity called before k=1,Nr loop.
1303    o added some #ifdef's ALLOW_PASSIVE_TRACER
1304    o cleaned initialisations in ctrl_map_ini
1305      related to TAF
1306    
1307    checkpoint40pre6
1308    o split dynamics into thermodynamics & dynamics
1309    o corresponding split of calc_diffusivity into
1310      calc_diffusivity, calc_viscosity
1311      (kpp_calc_diff, kpp_calc_visc).
1312    o Added diffkr, kapgm to control variables
1313    o bug fix in gmredi_slope_limit for ldd97
1314    
1315    checkpoint40pre5
1316    o proper initialization of Adams-Bashforth time stepping
1317      + uses forward step for very first step of model (iter=0)
1318    o re-generated *all* output since almost all output is modified by this
1319      change (sorry but we've been putting this one off for about 2 years)
1320      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1321        *not* regenerated since they are already out of date and I don't
1322        want to create the impression that they are suddenly working.
1323    o removed KAP stuff for DEC's
1324    o modified/added many .cvsignore files in */code and */input
1325    o added new expt "solid-body.cs-32x32x1"
1326      + this uses an alternative form of ini_curvilinear_grid.F which
1327        is not necessarily any better than the current one...
1328    
1329    checkpoint40pre4
1330    o added re-initialisations of utrans,vtrans,rtrans in
1331      calc_common_factors which are crucial for TAF.
1332    o extended iMin,jMin range for calc_common_factors,
1333      calc_diffusivity
1334    o added option ALLOW_PASSIVE_TRACER
1335    o a few minor updates and fixes
1336    
1337    checkpoint40pre3
1338    o created calc_gtr1.F for gad package
1339    o split the_main_loop and re-introduced forward_step
1340    o some recomputations of nIter0 for TAMC
1341    
1342    checkpoint40pre2
1343    o Updated to latest branch of AJA, JMC
1344    o Added gradient check package
1345    o Added routines for passive tracer handling
1346    o Added carbon sequestration sensitivity experiment
1347    
1348    checkpoint39
1349     o Modifications and fixes to support TAMC
1350       (mainly missing or wrong directives)
1351     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1352       in addummy_in_stepping
1353     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1354     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1355     o Included following packages:
1356       cal: calendar
1357       exf: external forcing
1358       ecco: essential routines to control use of cal, exf
1359             (NB: this is not the full ECCO environment)
1360     o disabled some packages by default in genmake
1361    
1362    checkpoint38
1363     o see notes_c37_adj.txt
1364     o corrected wrong layer index in external_forcing_t
1365     o replaced the_main_loop/forward_step by the_main_loop
1366     o removed forceoutput from write_state
1367       (replaced criteria for initial/final state)
1368     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1369    
1370    checkpoint37
1371     o mdsio.F routine split and packaged in pkg/mdsio
1372       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1373        used unless genmake -disable=mdsio)
1374     o allow a more precise surface-geopotential gradient for the atmosphere
1375       taking into account the change in space of Alpha (=1/rho) at the surface.
1376     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1377       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1378     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1379       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1380       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1381     o Time-Average diagnostics defined as a pseudo package "timeave".
1382     o pickup files : old pickup (before c35) did not work with new code (c35
1383       and after) unless activating 2 commented lines in initialise-varia.
1384     o Non-Hydrostatic pickup file Pb fixed.
1385     o bug with Rigid-lid version (since c35) fixed.  
1386    
1387    checkpoint36
1388     o implement Crank-Nickelson barotropic time-stepping
1389     o recover Time-Average diagnostics
1390     o fix Pb in checkpoint (PR#19)
1391     o AIM become a standard package ; clean unused CPP_kees
1392    
1393    checkpoint35
1394     o subtantial rewrite of dynamics.f
1395     o allows staggered time-stepping
1396     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1397     o added bottom drag (linear + quadratic)
1398    
1399    checkpoint34
1400     o Modified exchange routines for correct reverse simulation.
1401     o Added verification output to comply with bug fix in impldiff.F
1402       as of c33 (exp2, natl_box).
1403     o Corrected store directives in dynamics.F
1404     o Corrected array boundaries in impldiff.F
1405     o Corrected array dimensions in gmredi.
1406       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1407     o Added routine GLOBAL_SUM_INT to global_sum.F
1408     o Added mdsio_gl.F for ECCO purposes.
1409    
1410    checkpoint33
1411     o Fixed bug in lower BC in impldiff.F
1412     o Fixed confusion about units of forcing arrays in FFIELDS.h
1413       namely Fu,Fv,Qnet,Qsw,EmPmR:
1414       - Removed verification/natl_box/code/external_fields_scale.F
1415         (did not differ from that in model/src)
1416       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1417         (see FFIELDS.h for description)
1418       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1419         kpp_calc.F and kpp_transport_t.F
1420       - Removed model/src/external_fields_scale.F and calls to it
1421       - verification/natl_box uses flux data with "atmospheric" sign so
1422         a special version of external_fields_load.F is used to
1423         change the data as it's read in. This way, the arrays
1424         have the right units and signs at all times tha a user could
1425         possibly use them.
1426     o Corrected genmake to delete a temporary file during configuration
1427    
1428    checkpoint32
1429     o Scaling of forcing fields moved from external_forcing.F to
1430       external_fields_scale.F, called directly after loading fields.
1431     o Surface relaxation terms added to surface tendency fields in
1432       extra subroutine.
1433     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1434       fields.
1435     o Changes in GMRedi to comply with packaging structure.
1436     o Modifications and bug fixes in KPP package.
1437     o Verification experiment for KPP added (verification/nat_box/)
1438    
1439    checkpoint31
1440     o Packages interface brought in line with defined standard
1441       -> new routines packages_...F
1442       -> changes in initialise_fixed.F, initialise_varia.F
1443       -> enables initialisation interface for ECCO package
1444     o Rescaling of external forcing fields immediately after read
1445       (removed from external_forcing.F)
1446       -> new: surface_fields_scale.F
1447       -> affects ini_foorcing.F, external_fields_load.F
1448     o Computation of surface tendencies before tendency updates.
1449       -> new: external_forcing_surf.F
1450     o Change of variable names useGMRedi, useKPP, useECCO
1451     o Further changes in dynamics.F, impldiff.F for TAMC
1452     o Tested for experiments 0, 2, 4.
1453       - not yet tested for GMRedi.
1454       - not yet tested for KPP.
1455    
1456    checkpoint30
1457     o Updates for OBCs
1458     o New experiment for test OBCs (internal_wave)
1459     o New output.txt in verification/exp4/results/
1460     o Updates for KPP: calculation of viscosity corrected, new variables
1461       kpp_dumpFreq and kpp_taveFreq
1462     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1463       and entry for T90 in genmake
1464    
1465    checkpoint29
1466     o packaged KPP and GM/Redi
1467    
1468    checkpoint28
1469     o Corrected initialization of hFacMin for difference vertical coordinates
1470     o Modified calculation of partial cell thickness to more robust algorithm
1471     o config_summary.F: replaced write_1D_... by write_0D_...
1472       read_write.F: added subroutines write_0D_...
1473     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1474       included some initialisations required for TAMC.
1475     o routine calc_isoslopes: modified sqrt computation to make it
1476       differentiable for zero argument.
1477     o routines dynamics, impldiff:
1478       included store directives and tape key computations required for TAMC.
1479     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1480    
1481    checkpoint27
1482     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1483       formulation works properly with variable resolution.
1484     o restructured the calling tree between the_model_main() and dynamics()
1485     o split initialise() into initialise_fixed() and initialise_varia()
1486     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1487       in new routine ini_psurf()
1488    
1489    checkpoint26
1490     o moved some #ifdef in optional routines to encompass everything
1491       except the argument declarations. This was using up some memory.
1492     o fixed macros like _ADT to work with both versions of Linux cpp
1493     o cleaned up some unused and uninitialized variables
1494       (helps when debugging with strict compile options)
1495     o split up CPP_EEOPTIONS.h into options and macros
1496       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1497     o patch for 2 processor JAM mode
1498    
1499    checkpoint25
1500     o updates for OBCs and NH
1501     o dramatically reduced memory usage
1502     o added "JAM" routines for use on Artic network
1503     o parameterization of convection by implicit vertical diffusion
1504     o added a diagnostic of convective index
1505     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1506       (this is was partly for OBCs and NH but also in anticipation of
1507        an explicit free-surface option)
1508     o initial state input files for U and V
1509    
1510    checkpoint24
1511     o Removed some spurious "REAL"s
1512     o Updated KPP to latest version from JPL
1513     o Added a COS(latitude) in horizontal viscosity
1514    
1515    checkpoint23
1516     o Added del^4 diffusion for salt and temperature
1517     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1518    
1519    checkpoint22
1520     o Made many small changes: implicit none, format(i5), etc...
1521     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1522    
1523    checkpoint21
1524     o Introduced new I/O package that supports direct-access records (mdsio.F)
1525     o Split-up mid-level I/O routines
1526     o Updated input data for experiments 0,1,2,4 and 5
1527     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1528    
1529    checkpoint20
1530     o Tidied up open-boundaries some more
1531     o Added non-hydrostatic code
1532     o Fixed some input data
1533     o Modified MPI start-up to work in "coupled" context.
1534    
1535    checkpoint19
1536     o Tidied up directory structure for verification experiments.
1537     o Added new code for open boundaries.
1538     o Corrected advective terms near boundaries.
1539     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1540     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1541     o Split default parameters out of ini_parms.F into set_defaults.F.
1542    
1543    checkpoint18
1544     o Further changes for optional code generation with
1545       CPP - ugh!
1546    
1547    checkpoint17
1548     o Beginning to incorporating modularity
1549       for supporting atmos. and ocean configs.
1550     o Small changes for TAMC complinace
1551     o New ultra simple test case. Barotropic box
1552       configuration "exp0".
1553    
1554    checkpoint16
1555     o Minor changes to exchange routines to support
1556       accumulation in reverse mode. Adjoint of an
1557       assignment is an addition.
1558     o Changes to support compilation by TAMC (LR(1)
1559       syntax) and by g77 under Linux ( 72 character
1560       limit ).
1561    
1562    checkpoint15
1563     Rewrote exchange routines to allow
1564     o General tile <-> tile connectivity.
1565     o TAMC reverse mode flag ( is this really needed? )
1566     o Variable width overlap and exchange region widths.
1567     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1568       shmput/shmget, VIA, SYSV shmem and every other cool
1569       communication method.
1570    
1571    checkpoint14
1572     Consistent isomorphism chages made. These allow dynamical core
1573     to support both pressure and meters as a vertical coordinate.
1574    
1575    checkpoint13
1576     Release which corrects global_max problem and a couple
1577     of KGM time-averaging diagnostic errors. Also contains
1578     a double-gyre experiment setup as well as the baseline
1579     4 degree global template. The double gyre template is
1580     organised to allow it to be applied automatically to
1581     the baseline configuration.
1582    
1583    branch-point-rdot
1584     A few tidy-ups have been made bt the real point of this
1585     check-point (excuse the pun) is to allow a branch to be
1586     made for the purposes of adding the rDot alterations.
1587     I don't want to commit the rDot to the main-trunk until
1588     we've actually tested it...
1589    
1590    checkpoint12
1591     Tidy up and added generic genmake script (formerly
1592     configure script).
1593     Released to testers.
1594    
1595    checkpoint11
1596     Re-arranged initialise() and introduced ini_vertical_grid()
1597     and ini_masks_etc().
1598    
1599    checkpoint10
1600     Introduced the configure script.
1601     Separated out the diags package.
1602     Added template for writing time-averages of tile/intermediate quantities.
1603     Updated SIZE.h in exp2 and made the data big-endian.
1604    
1605    checkpoint9
1606     MPI fix. Filename changes (meta/data). salbin*y stuff.
1607     General tidy-up.
1608     SST.bin SSS.bin added to verification/exp2
1609    
1610    checkpoint8
1611     Inludes time-dependant forcing and time-averaging.
1612     Works at 4x4 and 2.8125x2.8125 global
1613    
1614    checkpoint7-4degree-ref
1615     Branch from checkpoint7. Released for application to
1616     global modeling and general modeling - process studies, regional
1617     model etc..
1618     Configured for verification/exp2 - 4 degree global, two process.
1619    
1620  checkpoint7  checkpoint7
1621   Created by cnh   Created by cnh

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