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revision 1.6 by adcroft, Mon Jun 22 16:09:37 1998 UTC revision 1.287 by dimitri, Wed May 5 00:23:37 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o pkg/seaice modifications
7      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
8        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
9        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
10      - changed proxy for geostrophic velocity and updated
11        verification/lab_sea/results/* accordingly
12      - removed ADI dynamic solver from pkg/seaice
13      - replaced all occurrences of 1/CSTICE or 1/CSUICE
14        they caused a segmentation fault under certain circumstances
15      - removed unused field WATR
16    o bug fix in exf-package:
17      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
18         now reflect that.
19    o small fixes in the cal-package:
20      - set reference date to first of January for the 'model'-calendar
21      - failing of cal_CheckDate in cal_FullDate now actually results in a
22        warning
23    o small modifications in exf-package to increase flexibility:
24      - change climtempfreeze from a constant to a runtime parameter that
25        is specified in data.exf_clim (default = -1.9)
26      - introduce runtime parameter windstressmax (default = 2.0) that is
27        specified in data.exf
28    o fix in pkg/thsice:
29      - update Evap (Tsf changes) to be consistent with Latent heat flux
30      - maintain snow precipitation unchanged (even if Tsf >=0).
31     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
32    
33    checkpoint52m_post
34    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
35      this does not change any of the results, because myIter=0 in swfrac always
36      lead to jwtype=2 (the default anyway), but the call makes little sense
37      as a default
38    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
39    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
40      atmospheric model (AIM) to use it ; add a "slab ocean" component.
41    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
42    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
43    o extending useSingleCpuIO option to work with new exch2 I/O format
44      - old-style, missing-tile I/O is still accessible by defining CPP
45        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
46    o monitor package can write to NetCDF files and/or STDOUT
47    o fix re-definition bug in MNC_GRID_INIT_ALL()
48    o doc/api_reference added
49      - a framework for building an API Reference Manual using all
50        the "protex" comments embedded in the code
51      - see pkg/generic_advdiff, pkg/mnc for examples
52    o MNC:
53      - make myThid the last argument for all subroutines
54      - new default for the grid files: NO halos
55      - add useMNC and other run-time flags
56      - separate per-file-group handling of the unlimited dimension
57      - early initialization of MNC w/ flags read at the eeboot stage
58        and lookup tables set in initialize_fixed
59      - write all MNC output to a freshly-created directory
60    o thermodynamics sea-ice (thsice) is now tested with testreport.
61    o test exp. advect_cs: use the standard cs32 grid ; update output.
62    o Added functionality to grdchk:
63      pick global i,j,k position (or nearest wet) where to perform check.
64    
65    checkpoint52l_post
66    o new land formulation:
67      a) use ground enthalpy as prognostic variable to ensure exact
68         energy conservation.
69      b) account for water temperature and for latent heat of freezing
70         in all processes (rain, run-off, ground storage)
71      c) compute surface and ground temperature implicitly.
72    o aim_v23 modification for new land model:
73      a) Treat separately land / ocean / sea-ice surface fluxes
74         to allow implicit computation of land & sea-ice surface temp.
75      b) add snow precipitation.
76    checkpoint52l_pre
77    
78    o fix problem (when 1 tile is empty) in min/max monitor.
79    o fix bug in timeAve (u,vZetatave in common block)
80    o no restoring terms under ice for pkg/seaice
81    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
82    o bug fix for pkg/seaice pickups
83    o change MNC call locations and add coordinate attributes
84    o mask vorticity at the corner ; affects global_ocean.cs output
85    o fix ini_curvilinear_grid ; test CS experiments with mpi
86    o aim.5l_cs: modify sea-ice fraction input file ; update output
87    o exf: Adding simple range check routine for exf fields after read
88    
89    checkpoint52k_post
90    o removed top-level directory "diags"
91      - we migrated these functions to pkg/timeave a long time ago
92    o fixed bug introduced in pkg/monitor
93    o accuracy ctrlprec = 32 insuffient for gradient checks using
94      averaged fields (I/O via cost_averages)
95      -> use ctrl.h in active_file*.F to control I/O precision.
96    o paramter list of CALL ADTHE_MAIN_LOOP
97    o added initial do_the_model_io to ecco
98    o set all ...Freq to zero after cost_final
99      taveFreq, dumpFreq, pChkptFreq
100    o MAIN and ECCO differentiability restored
101    
102    checkpoint52j_post
103    o fix nchklev in tamc.h for global_ocean...
104    o Bringing flow and store directives up-to-date
105    o Really weird thing!
106      call do_the_model_io from the_main_loop with parameters
107      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
108      TAF places a faulty re-call of initialise_varia
109      after cost_final call which should not be there!
110    checkpoint52j_pre
111    
112    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
113      error messages
114    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
115    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
116      debug output
117    o modfied mdsio_writefield.F to handle non-global files under exch2
118    o update AIM Cubed-Sphere exp (aim.5l_cs):
119      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
120    o update AIM Equatorial Channel exp:
121      use standard aim_v23 pkg and change the SST fields to be more realistic.
122    o globalFile now works with exch2
123    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
124      mon_vort3.F to make exch2 friendly with >1 tile per cube face
125    o limit timeave output for hi-res integrations
126    
127    checkpoint52i_post
128    o removed CPP_EEOPTIONS.h from verification/*/code
129    o updated the tiling for global_ocean_pressure
130    checkpoint52i_pre
131    
132    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
133      the old pkg/aim).
134    
135    checkpoint52h_pre
136    o shortened offending lines in exch2_send_rx?.template
137    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
138    o genmake2: add build & execute test for NetCDF code
139    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
140      old grid files, moved CPP_EEMACROS.h to pkg/exch2
141    o added useSingleCPUIO flag to monitor.F and mon_out.F
142    o added temporary hack for sea-ice dynamics on the cube:
143      metric terms are ignored and it is assumed that
144      there is no sea-ice on cube faces 1, 2, 4, and 5.
145    
146    checkpoint52f_post
147    o added exch2 cube routines to pkg/exch2
148    o modified hs94.cs-32x32x5 to use it
149    o added new grid files to hs94.cs-32x32x5
150    checkpoint52f_pre
151    
152    checkpoint52e_post
153    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
154      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
155    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
156      to work with implicit vertical advection and AB ;
157    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
158    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
159     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
160    checkpoint52e_pre
161    
162    o fix bug in impldiff when Nr=1 or Nr=2.
163    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
164    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
165    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
166      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
167    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
168    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
169    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
170    
171    checkpoint52d_post
172    o re-tiled many expts to allow comparison in multi-processor mode
173      - updated output accordingly
174      - changed hs94.128x64x5 to use intial T from file rather than use the
175        random number generator
176    o add infrastructure in model routines for fizhi and gridalt packages
177    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
178    o changes to permit hi-res, cubed-sphere, configuration
179      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
180      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
181      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
182        of surface winds for the cube
183      (A verification experiment, based on global_ocean.cs32x15, but with
184       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
185       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
186       complete with example surface forcing files and matlab scripts to look
187       at the output and compare it with that of global_ocean.cs32x15.)
188    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
189       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
190       to conform to the common rule.
191    o check-in the first version of the coupler + interfaces for multi-components
192       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
193       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
194       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
195       - ocean and atmos. share the same horizontal grid (no interpolation).
196       - exchanges between component and coupler is done in forward_step
197    o new verification experiment, cpl_aim+ocn:
198       coupled ocean - AIM atmosphere on cs32 grid.
199    
200    checkpoint52d_pre
201    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
202    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
203    
204    checkpoint52c_post
205    o Fixing OPTIONS files for use of exf:
206      - ALLOW_ECCO not needed
207      - ECCO_CPPOPTIONS.h should not be included from
208        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
209        as has been the case in the past
210      - All cal/exf related options are currently set in
211        single header file. Should remain so until we
212        agree on a consistent new policy.
213    o Removed all CPP options for cal package.
214      cal has no more CPP options.
215    o modified STOREs in GAD_ADVECTION
216    o corrected key comp. for passkey
217    
218    checkpoint52b_post
219    o new version: "thsice" of thermodynamic sea-ice pkg:
220     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
221     - modify fluxes but do not change theta directly;
222     - light cleaning of bulk_force pkg (still needed with thsice).
223     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
224       + output_thsice.txt to test thsice & bulk_force pkgs.
225    o put back grid & coriolis monitor output.
226    checkpoint52b_pre
227    
228    o call "do_the_model_io" at the beginning (=> dump initial state)
229    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
230    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
231      (need info on NUMBER_OF_PTRACERS)
232    o missing PTRACERS headers in some routines
233    o default tamc.h in pkg/autodiff supposed to crash
234      to ensure proper customization
235    
236    checkpoint52a_post
237    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
238      - moved surfaceTendencyTice from pkg/seaice to main code
239      - subroutine FREEZE_SURFACE now limits only surface temperature
240        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
241        => new output.txt for global_ocean.cs32x15 & global_with_exf
242      - keep the old version of FREEZE for backward compatibility;
243        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
244      - corresponding modifs for TAF directives
245    o added surface flux output variables to TIMEAVE_STATVARS
246    o time-averaged output for pkg/ptracers
247    o fix problem with ECCO-related divided adjoint
248      snapshot file was missing some ad-variables,
249      but no warning issued by TAF
250    
251    checkpoint52a_pre
252    o some bug fixes for #undef REAL4_IS_SLOW
253    
254    checkpoint52 = ecco_c52_e35
255    o after testing adjoints of checkpoint51u_post
256    
257    checkpoint51u_post
258    o this is the post-merge tag of the ecco-branch
259      (needs another clean checkout and re-testing)
260    o various natl_box_adjoint configs and results
261      but no input fields
262    o obcs adjoint not yet merged!
263    o adding ECCO global 1x1 and 2x2 degree configs
264    o updated/extended some store directives for seaice
265    o pkg/ecco now containes ecco-specific part of cost function
266    o top level routines the_main_loop, forward_step
267      supersede those in model/src/
268      previous input data.cost now in data.ecco
269      (new namelist ecco_cost_nml)
270    o in ctrl/ cleaned some cross-dependencies and updated CPP options
271    
272    checkpoint51t_post
273    o this is the pre-merge tag of the ecco-branch
274    
275    checkpoint51s_post
276    o cleanup: removed various obsolete #define-s
277    o pkg/grdchk
278      - renamed 'ph-grd 3' to 'grad-res'
279      - merged from ecco-branch
280        (remaining bug fixes for obcs gradient checks)
281      - additional high-precision output for testreport
282        (grep for 'precision_grdchk_result')
283    
284    checkpoint51r_post
285    o cleaned up or removed CPP_OPTIONS.h files
286    o updated results for some of the tests to reflect the new
287      optfiles (-ieee: -O0 instead of -O3)
288    
289    checkpoint51q_post
290    o cd_code:
291      - moved cd_scheme.F -> cd_code_scheme.F
292      - separate read_checkpoint from cd_code_ini_vars.F
293      - separated cd_code part from write_checkpoint
294      - updated AD_SOURCE, generated .flow
295      - added CD_CODE_VARS.h to the_main_loop
296      - Moving cd_code specific store dir.s to pkg/cd_code
297    o ctrl package totally restructured
298      - pack/unpack now optional and decoupled from
299        xx_/adxx_ I/O
300      - ctrl_pack/unpack cleaned
301        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
302      - confined inclusion of AD_CONFIG.h to where necessary.
303    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
304    
305    checkpoint51p_post
306    o create initial cd_code package
307      - WARNING: the initialization of fields within packages
308        is broken because INI_FIELDS (where READ_CHECKPOINT is
309        called) is called *before* PACKAGES_INIT_VARIABLES.
310        This seems to be backwards since
311        1) its important to initially zero the entire field including
312           the "halo" region
313        2) zeroing needs to be done *before* reading pickup info
314           and the pickup call might or might not happen in any
315           particular run
316      - this needs an overhaul for R2
317    o cleanup verification/*/code/GMREDI_OPTIONS.h
318    o cleanup testreport
319    
320    checkpoint51o_post
321    o bringing AD-related verif's up to date with genmake2
322      - carbon/
323      - global_ocean.90x40x15/
324      - hs.94.1x64x5/
325      - (front_relax/ )
326    o (more) consistent directory structure for AD-related verif.'s
327    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
328    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
329    o bug fix in find_alpha.F for MDJWF:
330      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
331        change rho -> rho-rhoConst
332      - replace call find_rho to find_rhonum
333    o initialisation of rFlx extended to full array (required by TAF)
334      and shifted to thermodynamics
335    o removed PTRACERS.h in ptracers routine
336    o added surfacetendencyPtr to S/R parameter list pracers_forcing
337    o Correcting initialisations for fVerU, fVerV.
338    o helping TAF to recognize dependency on kUp for
339      fVerU, fVerV
340    o Replacing delZ by delR in pkg/ctrl/
341    checkpoint51o_pre
342    
343    o undid all of cp51 pending some cleanups and discussion
344    o added the [#include "AD_CONFIG.h"] statement to all files that need
345       it for adjoint/tl #defines
346     o re-worked the build logic in genmake2 to support AD_CONFIG.h
347     o removed tools/genmake since it no longer works
348    
349    checkpoint51n_post
350    o modifications to make FREEZE flux visible to pkg/kpp
351      - moved surfaceTendencyTice from pkg/seaice to main code
352      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
353      - subroutine FREEZE now limits only surface temperature
354        (this means new output.txt for global_ocean.90x40x15,
355         global_ocean.cs32x15, and global_with_exf)
356    o added surface flux output variables to TIMEAVE_STATVARS
357    
358    checkpoint51n_pre
359    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
360    o added [#include "AD_CONFIG.h"] to all files that use the following
361      defines:
362      - ALLOW_ADJOINT_RUN
363      - ALLOW_TANGENTLINEAR_RUN
364      - ALLOW_ECCO_OPTIMIZATION
365    
366    checkpoint51m_post
367    o incorporating changes to get TAMC/TAF working in genmake2
368      - added new TAMC/TAF targets to the Makefile
369      - various cleanups related to package handling
370      - these changes should have no impact on the forward model
371    
372    checkpoint51l_post
373    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
374     - faster algorithm for cal_addtime.F
375     - higher precision arithmetic, where needed
376     - pkg/exf *startdate variables changed from calendar date to
377       model integration time
378    
379    checkpoint51l_pre
380    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
381    o enable to apply restoring on S & T only in a latitude band.
382    o update output (external_forcing_surf modif. change truncation errors)
383       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
384    
385    checkpoint51k_post
386    o change default to: useNHMTerms=.FALSE.
387     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
388       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
389     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
390        exp1, ideal_2D_oce
391     - change data file of oceanic exp (leave the results unchanged for now)
392       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
393    o set gravitySign automatically according to the vertical coordinate used
394      (and change sign: back to "logical" value: +1 when R increases downward)
395    o added an include barrier to the default CPP_OPTIONS.h and
396      removed the #include "PACKAGES_CONFIG.h" from it
397    o fix a bug in mom_fluxform (from chk51j_post)
398    
399    checkpoint51j_post
400    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
401    o adjusted some flow directives (dynamics, thermodynamics)
402    o added cubed-sphere case to test cost function
403    o heckpoint_lev?_directives.h now include
404      pkg-specific directives, whenever those are enabled.
405    o Moving pkg-specific flow directives to corresponding pkg
406      Moving pkg-specific differentiation list to corresponding pkg
407      Moving pkg-specific checkpoint-lev storing to corresponding pkg
408      ---> conventions are
409           - pkg_ad.flow
410           - pkg_ad_diff.list
411           - pkg_ad_check_lev?_dir.h
412    
413    checkpoint51i_post
414    o merge of the branch-genmake2
415      - knowingly breaks the older genmake
416      - automatic generation of all ALLOW_${PKG_NAME} defines
417      - new testreport supersedes older testscript
418    o large number of package inclusion and header cleanups
419    checkpoint51i_pre
420    
421    o new output for adjoin of global ocean vector invariant
422    o fix for checkpoint of thermodynamic seaice and bulk_force
423    o Steph gchem various cleanups
424    
425    checkpoint 51h_pre
426    o fixed some single quotes
427    o modify gchem pkg to be more versatile
428    o modifications to clean up dic pkg
429    o add pkg/cfc
430    
431    checkpoint51g_post
432    o provide links for ARPACK and ADM*TLM
433    o start removing verification/vero/
434    o update AD-related stuff
435      (in particular some IF-statements in model/src/ routines)
436    o adding to verification/global_ocean.90x40x15/ adjoint of
437      vector invariant setup
438    
439    checkpoint51f_post
440    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
441    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
442      of tracer Green's fucntions for ocean inversion project.
443    
444    checkpoint51f_pre
445    o Added on-the-fly spatial interpolation capability
446        "USE_EXF_INTERPOLATION" to pkg/exf.
447      - This is a temporary Cartesian-grid hack until
448        the super-duper ESMF coupler becomes available.
449      - See verification/global_with_exf/README for usage example.
450      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
451        flags and modified pkg/seaice accordingly.
452    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
453        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
454        non-local transport term.
455    
456    checkpoint51e_post
457    o pkg/mom_vecinv:
458      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
459      - add time-ave diagnostic of vorticity advection.
460    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
461    o atmospheric geopotential: - include water vapor effect;
462                                - use p^kappa in p* scaling.
463    o land pkg: read initial state from files.
464    o AIM : add stratospheric drag in the upper level
465    
466    checkpoint51d_post
467    o change function ILNBLNK (=> last non-blank char.) to return zero
468      (instead of the string length) when the string. char is empty
469    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
470    o modif's to restore TAMC compatibility
471      - avoid "_d" constructs in PARAMETER declarations
472      - avoid interrupting lines by comment lines
473    o Use cluster local disks for purely local I/O
474      vs. globally visible disks needed for ctrl stuff
475      (merged from ecco-branch)
476      - new active_file_loc... and mdsio_..._loc routines
477      - affected packages: autodiff, ctrl, grdchk, mdsio
478    
479    checkpoint51c_post
480    o introducing integer flag debugLevel
481      - debLevZero: suppress all output
482      - debLevA: standard
483      - debLevB: equivalent to current debugMode=.TRUE.
484    o introducing pathname variable mdsioLocalDir for mdsio
485      that can be specified at runtime
486      (relevant for cluster I/O to local disk)
487    `
488    >>>checkpoint51b_post
489    adjoint of ptracers
490    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
491    o extended state in checkpoint_lev?, etc.
492    o alternative ctrl/cost with tr1 or ptracer
493    o new comlev1_bibj_ptracers
494    o new ptracers.flow
495    o made ptracers_forcing same as external_forcing_s
496    o added verification for adjoint with ptracers
497      - adm. grdchk fail so far
498      - tlm. grdchk OK
499      - checked tapelev/comlev recomputations: OK
500    <<<checkpoint51b_pre
501    
502    checkpoint51a_post
503    o added code for biogeochemistry package
504      - new pkgs: dic, gchem
505      - new subroutine in ptracers
506    o modify code for biogeo packages
507      - in model/src and pkg/ptracers
508    
509    checkpoint51
510    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
511      - autodiff, ctrl, exf, grdchk, seaice
512      kept separate packages
513      - cost, ecco, obcs
514    o updating verification/internal_wave, verification/lab_sea
515      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
516    
517    checkpoint50i_post
518    o Preparing next differentiable checkpoint and sync
519      of MAIN vs. ecco-branch
520      - 1st step: this one is differentiable
521      - 2nd step: next(! not this) checkpoint will have updated packages
522                  from ecco-branch)
523    
524    checkpoint50h_post
525    o new package "land": provide surface BC for AIM.
526    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
527    o AIM: use true log-P extrapolation for near surface temp (= as in
528        F.Molteni paper) ; update aim.5l_cs output.
529    o New variable in PARM03 for more flexible pickups
530    o somewhat cleaned package initialisation sequence for
531      ctrl/ cost/ ecco/ in packages_... routines
532    
533    checkpoint50g_post
534    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
535      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
536      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
537        made the default because of faster convergence than ADI
538    
539    checkpoint50f_post
540    o exf totally restructured
541      - replaced all exf_set_ routines by one generic exf_set_gen.F
542        and made sure it's still differentiable
543      - split exf_getffields.F into new exf_bulkformulae.F
544      - exf_inscal_/exf_outscal_ suffixes consistent with field names
545      - updated adjoint/makefile and relevant verif. accordingly
546    
547    checkpoint50f_pre
548     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
549          + change Evap over land. (update aim.5l_cs output)
550     o added missing .cvsignores and made uniform across expts
551     o changed configuration of tidal_basin_2d expt
552     o added pkg/debug functions for tracing code in fatal crashes
553     o tidied pkg/monitor to use MONITOR_OPTIONS.h
554     o new fn in pkg/monitor to stop model if solution grows too big
555     o removed lots of single quotes from comments
556    
557    checkpoint50e_post
558    o make KPP work with PTRACERS
559     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
560       nearly a copy of kpp_transport_s
561     - there is no analogue to SurfaceTendencyS, so I have to use
562       gPtr(of the surface layer) instead
563    o add a new platform SunFire+mpi (SunFire 15000) to genmake
564    checkpoint50e_pre
565    
566    checkpoint50d_post
567    o change kpp output from multiple-record state files to single-record state
568      files analogous to write_state.F
569    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
570      analogous to the cg2d-related output.
571    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
572      so that writing to internal file fn (with length 512) fails.
573    checkpoint50d_pre
574    
575    checkpoint50c_post
576    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
577    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
578    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
579    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
580    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
581    
582    checkpoint50c_pre
583    Merging from release1_p13:
584    o bug fix for pkg/seaice dynamic solver
585    o Added SEAICE_initialHEFF to pkg/seaice
586    
587    checkpoint50b_post
588    o store u*,v* in gU,V instead of in guNm1,gvNm1
589    o in order to put the momForcing out of the Adams-Bashforth:
590      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
591      to timestep.F
592    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
593    o re-generate output for highly sensitive test-exp:
594       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
595    
596    checkpoint50b_pre
597    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
598    o corrected CPP option mismatch in exf_Bulk... functions for case
599      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
600    
601    checkpoint50a_post
602    o Bug fix for merging between c50 and KPP.
603      ikey was passed from thermodynamics to kpp_calc via
604      common block rather than being recomputed in kpp_calc,
605      in contradiction with new key itdkey.
606      New key ikppkey created, and tamc.h headers updated.
607    
608    checkpoint50
609    - 2nd step of merge with ecco-branch:
610      merge changes in ecco-branch back into main trunk
611    - bug fix in find_alpha
612    - more storing in gmredi_calc_tensor.F, kpp_routines.F
613    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
614    - merged some sliced AD support routines
615    
616    checkpoint49
617    merged from ecco-branch:
618    o exf:
619      - Enable initialisation of forcing fields to constant
620        (runtime) values.
621      - in exf_getffields.F
622        Reduce i-/j-loop to interior domain, discarding overlaps.
623        That also fixes wrong TAF-key computations for key_1, key_2
624        with bulf formulae.
625      - exf_init.F modify #ifdef for exf_init_evap
626      - exf_getffieldrec.F, ctrl_getrec.F
627        The following INT-usages are not safe:
628          fldsecs  = int(fldsecs/fldperiod)*fldperiod
629          fldcount = int(fldsecs/fldperiod) + 1
630        and were modified.
631    o autodiff: checkpoint_lev...
632      - updated storing for bulk formulae (some arrays were missing)
633      - added state for seaice package
634      - synchronized with main branch
635    o DIVA:
636      Modif.s in
637      - the_main_loop.F
638      - the_model_main.F
639      and added cost_final_restore.F cost_final_store.F
640      o With these changes, it is possible to fully separate
641        the first forward run to compute the cost function (mdthe_main_loop)
642        and adjoint runs over individual DIVA intervals (adthe_main_loop)
643        into separate model executions.
644        This enables better tuning of DIVA to given queue sizes.
645      o Loss of cost function value in consecutive DIVA runs is
646        fixed by storing to 'costfinal' file.
647      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
648        beginning/end of adjoint integration is accounted for.
649      The current changes apply to TAF-1.4.26.
650      TAF has one remaining bug, requiring one manual change
651      (see MITgcm manual).
652    o cal: synchronized between MAIN and ecco-branch
653    
654    checkpoint48i_post
655    o Changes to restore differentiability of code w.r.t. previous tag
656      (mostly adding new routines to make list and replacing
657      pressure by totPhiHyd).
658    o Updated and merged grdchk package
659      - has both ADM and TLM checks
660      - works for single- and multi-proc.
661      - output cleaned
662      - worked successfully for parallel DIVA
663    o genmake:
664      - Adding -platform=SP4
665      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
666    o Modif. for DIVA:
667      ctrl_unpack should not be called in intermediate DIVA interval.
668      (similar thing would apply for active files such as
669      tbar, sbar, psbar, which should not be reinitialised;
670      only relevant for ecco-branch)
671    
672    checkpoint48h_post
673    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
674    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
675    o Added SEAICE_initialHEFF to pkg/seaice
676    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
677    
678    checkpoint48g_post
679    --- EOS:
680    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
681      store total Potential in totPhyHyd for diagnostics & EOS.
682    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
683    --- Pressure/geopotential gradient:
684    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
685    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
686      ( changes results of global_ocean_pressure )
687    o NLFS + z-coord.: add eta*Rho' contribution.
688    o accurate phiHyd when using interface-W at the middle between 2 centers
689     ( changes results of ideal_2D_oce )
690    o includes r* 2nd term in potential gradient.
691    
692    checkpoint48f_post
693    Merging from release1_p12:
694    o Modifications for using pkg/exf with pkg/seaice
695      - improved description of the various forcing configurations
696      - added basic radiation bulk formulae to pkg/exf
697      - units/sign fix for evap computation in exf_getffields.F
698      - updated verification/global_with_exf/results/output.txt
699    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
700      (SBO) core products, including oceanic mass, center-of-mass,
701      angular, and bottom pressure (see pkg/sbo/README.sbo).
702    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
703      to avoid negative values in shallow regions.
704      - updated verification/natl_box/results/output.txt
705      - updated verification/lab_sea/results/output.txt
706    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
707    o Added useSingleCpuIO option (see PARAMS.h).
708    o Updated useSingleCpuIO option in mdsio_writefield.F to
709      work with multi-field files, e.g., for single-file pickup.
710    o pkg/seaice:
711      - bug fix in growth.F: QNET for no shortwave case
712      - added HeffFile for specifying initial sea-ice thickness
713      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
714    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
715      kpp_transport_t.F, forward_step.F, and the_main_loop.F
716    o pkg/seaice:
717      - adjoint-friendly modifications
718      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
719    
720    checkpoint48e_post
721    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
722    o dynamics: change definition of computational domain & adapt mom_fluxform
723      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
724    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
725        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
726        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
727        global_ocean.90x40x15 global_with_exf global_ocean_pressure
728        inverted_barometer solid-body.cs-32x32x1
729      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
730    
731    checkpoint48d_post
732    o in preparation for r*:
733     a) use pre-computed gradient of hydrostatic potential:
734        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
735     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
736        => affects results of glob_oce_pressure (different truncation error)  
737      update output.txt of ideal_2D_oce & global_ocean_pressure
738    
739    checkpoint48d_pre
740    o in preparation for r*:
741      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
742      pass the 2 comp. of the grad. as arguments to momentum S/R.
743      but for the moment, only used if it does not change the results.
744    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
745    
746    checkpoint48c_post
747    Modifications in treatment of initial flux forcing controls
748    to avoid extra storing of flux fields.
749    
750    checkpoint48c_pre
751    o Added tidal_basin_2d experiment (currently 1D!)
752    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
753    
754    checkpoint48b_post
755    o r* coordinate added in #ifdef NONLIN_FRSURF block.
756     (modification to pressure gradient not yet implemented)
757    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
758      (for U & V) that are used for vertical advection of momentum.
759    
760    checkpoint48a_post
761    o In preparation for r*, use temp. array to compute vertical transport
762       in flux-form momentum pkg. => change results of few test-exp.
763      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
764                        lab_sea, natl_box & plume_on_slope
765    
766    checkpoint48
767    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
768    
769    checkpoint47j_post
770    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
771    o moved adexch from forward_step to addummy_in_stepping
772    o added exch in ctrl_map_...
773    o aveFreq.=0. at end of cost_final to avoid overwrite in
774      reverse checkpointing loop
775    o Yet more changes in gmredi:
776      * adgmredi_calc_tensor
777        avoiding all recomputation of gmredi_slope_limit
778      * adgmredi_x/y/rtransport
779        added flag for excessive storing to avoid recomp. of
780        u/v/rtans, dTdx/y/z
781        -> this is not really necessary and very memory-consuming
782      * adgmredi_slope_psi:
783        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
784      * gmredi_slope_limit
785        re-activated full calculation of taperfct for case 'ac02'
786    o updating verification/ adjoints of carbon, global_ocean.90x40x15
787    
788    checkpoint47i_post
789    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
790    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
791      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
792    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
793    o gmredi: fix few bugs.
794    
795    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
796    This will be a good checkpoint to plug into the ecco-branch.
797    o few modif.'s to get latest version adjointed
798      (mainly kick out code in ini_linear_phisurf)
799    o modif's to run adjoint with exactConserv
800    o case GM_BOLUS_ADVEC should be cleaned
801      S/R gmredi_slope_psi should be cleaned
802    o verification/carbon now has exactConserv=.TRUE.
803    
804    checkpoint47g_post
805    o time-average AIM output: becomes independent from statvars time-average
806      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
807    o After TAF bug fix:
808      Tested adjoint of gmredi package.
809      Tests were done with checkpoint47 rather than with latest
810      checkpoint47f_post since the latter is broken for the adjoint
811      verification/carbon/ contains both ADM and TLM gradient checks.
812    Here they are, before they get changed/lost/stolen.
813    Mostly modif.'s to fix numerical sensitivities.
814    Gradient checks OK for
815    - GM_taper_scheme:
816      * clipping
817      * ac02
818      * linear
819      * glw91
820      * dm95
821      * ldd97
822    - GMREDI_OPTIONS:
823      * GM_VISBECK_VARIABLE_K
824      * GM_NON_UNITY_DIAGONAL
825      * GM_EXTRA_DIAGONAL
826      * GM_BOLUS_ADVEC
827    in conjunction with data.gmredi parameters to be checked in
828    in a few minutes under verification/carbon/code/
829    
830    checkpoint47f_post
831    Merging from release1_p10:
832    o modifications for using pkg/exf with pkg/seaice
833      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
834        and SEAICE_EXTERNAL_FLUXES
835      - pkg/exf CPP options EXF_READ_EVAP and
836        EXF_NO_BULK_COMPUTATIONS
837      - usage examples are Experiments 8 and 9 in
838        verification/lab_sea/README
839      - verification/lab_sea default experiment now uses
840        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
841    
842    checkpoint47e_post
843    o created a tag prior to creating a branch
844    
845    checkpoint47d_post
846    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
847      at the bottom boundary had an erroneous half slip boundary condition
848    o added bottom drag and no slip boundary condition capabilities to
849      oceanic pressure coordinates code
850    o added new verification experiment global_ocean_pressure, this experiment is
851      also described in the tutorial section of the manual
852    checkpoint47d_pre
853    
854    checkpoint47c_post
855    o Added a verification experiment for a global cubed-sphere ocean run
856      -  verification/global_ocean.cubed32x32x30
857      -  uses pkg/therm_seaice and pkg/bulk_forcing
858    
859    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
860    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
861      when using P-coordinate; only implemented for atmospheric config.
862    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
863      NOTES: requires option NONLIN_FRSURF to be "#define".
864    o update advect_xz/results/output.txt (left from checkpoint44g_post)
865    
866    checkpoint47b_post
867    Merging from release1_p9:
868    o pkg/seaice
869      - removed GOTO's and added taf directives
870      - double precision constants to reduce the g77 (Linux)
871        to F77 (SGI) differences reported in release1_p8
872    o tools/genmake
873      - added SGI options
874    o verification/testscript
875      - updated to that of checkpoint47a_post
876    o verification/global_ocean.90x40x15/input/eedata
877      - modified for SGI f77 compatibility
878    o verification/lab_sea
879      - added description of sea-ice model
880      - added missing matlab routines
881      - added test of thermodynamics parallelization
882    
883    checkpoint47a_post
884    o new pkg: aim_v23
885     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
886       for now, keep the same surface forcing as before.
887     - Part-Cell implemented into AIM; check that Heat & Water are conserved
888     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
889     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
890    o add diagnostic of surface correction term in monitor output
891    
892    o bulk_force and therm_seaice
893    - Two packages:  bulk_force (Bulk forcing)
894      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
895    - Earlier integration from Stephaine Dutkiewicz
896      and Patrick Heimbach.
897    - Two ifdef statements for compile time,
898       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
899    
900    checkpoint47
901    differentiable version of checkpoint46n_post
902    o bug fix in quasihydrostaticterms
903    o * "clean" adjoint code (in terms of extensive recomputations)
904        can now be obtained for all GMREDI options (i.e. for
905        - GM_VISBECK_VARIABLE_K
906        - GM_NON_UNITY_DIAGONAL
907        - GM_EXTRA_DIAGONAL
908        - GM_BOLUS_ADVEC )
909      * However, wrong gradient check problem remains unsolved.
910      * New CPP options have been introduced for different
911        tapering schemes
912    o external_fields_load now part of differentiation list
913    o pressure needs multiple storing;
914      would be nice to have store_pressure at beginning or
915      end of forward_step, e.g. by having phiHyd global (5-dim.)
916      (NB: pressure is needed for certain cases in find_rho,
917      which is also invoked through convective_adjustment).
918    o recomputations in find_rho for cases
919     'JMD95'/'UNESCO' or 'MDJWF' are OK.
920    o #define ATMOSPHERIC_LOADING should be differentiable
921    o ini_forcing shifted to begining of initialise_varia
922    o Incorporating QNVS line search routines into MITgcm
923      (this is separate code, and therefore not under pkg)
924      lsopt/, optim/
925    o Updated verification/carbon/
926      - #define GM_VISBECK_VARIABLE_K
927      - GM_taper_scheme    = 'ldd97'    
928    
929    checkpoint46n_post
930    Merging from release1_p8:
931    o verification/natl_box:
932      updating new external_fields_load routine
933    o New package: pkg/seaice
934      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
935      The sea-ice code is based on Hibler (1979-1980).
936      Two sea-ice dynamic solvers, ADI and LSR, are included.
937      In addition to computing prognostic sea-ice variables and diagnosing
938      the forcing/external data fields that drive the ocean model,
939      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
940      The implied surface heat flux is then stored in variable
941      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
942      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
943      non-local transport term.  Because this call precedes model
944      thermodynamics, temperature under sea-ice may not be "exactly" at
945      the freezing point by the time theta is dumped or time-averaged.
946      N.B.: fairly large differences in accuracy occur across
947            different platforms/compilers; comparison between
948            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
949            generated output gives:
950       T           S           U           V
951      C D M    c        m  s        m  s        m  s        m  s
952      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
953      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
954      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
955    
956      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
957    o GAD:
958      - generated new common blocks to account for call of
959        same gad routines with differing traceridentities
960        (needed to modify tracerIdentity indices in GAD.h)
961      - generated separate common blocks for case useCubedSphereExchange
962        (Department of Futurology)
963      - parameter lists to gmredi_?transport: added tracerIdentity
964      - added new key indices to tamc.h
965    o external_fields_load:
966      - added this routine to TAF list
967      - needed to make some common blocks global and additional storing
968        along the same lines as exf package (checkpoint_lev?_directives.h)
969    o exf:
970      updated external forcing package
971      - bug fixes carried over from ecco-branch
972        (missing OBCS_OPTIONS.h in two routines)
973      - enable easy to use "no forcing".
974      - added exf I/O for atmospheric loading
975      - added exf I/O for runoff data
976      - transfered scaling between exf <-> MITgcm to exf namelist
977    o Adding new verification experiment global_with_exf.
978      This verification experiment is almost identical to the
979      global_ocean.90x40x15 experiment, except that it uses
980      the exf (and cal) package instead of the
981      external_fields_load routine (cf README file).
982    
983    checkpoint46m_post
984    o modified testscript to return -- when there are no lines of "%MON" output
985    o added new flag "quasiHydrostatic" for QH mode
986      and new routine quasihydrostaticterms()
987    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
988      New routine: mom_u_coriolis_nh()
989    o fixed sign of non-hydrostatic metric terms in u and v equations.
990      Depend on correct sign of gravitySign.
991    o added work.pc* to .cvsignore in aim directories using ifc
992    o introduced flag for controllin non-hydrostatic metric terms
993    o removed gravitySign from PARM04
994    o switched to g77/ifc from pgf77 in aim experiments
995    
996    checkpoint46l_post
997    o made convective adjustment work with pressure coordinates:
998     - changed the direction of k-loop in convective_adjustment.F for the
999       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1000     - adjusted the reference pressure k-index in convective_adjustment.F
1001     - adjusted the convection condition in convect.F (in analogy to
1002       calc_ivdc.F)
1003     - convective_adjustment no longer computes anything on the halos
1004     - removed the warnings about negative salinity from find_rho.F and
1005       find_alpha.F; instead the new routine look_for_neg_salinity, called
1006       at the beginning of find_rho, find_alpha, and find_beta, does a
1007       check of the entire slice, if CPP-option
1008       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1009    checkpoint46l_pre
1010    
1011    checkpoint46k_post
1012    o fixed the verification/global_ocean.90x40x15 experiment:
1013     - new bathymetry (the world according to A., JMC, and M.)
1014     - new initial fields and forcing fields (*.bin files)
1015     - new POLY3.COEFFS (for the next release one should switch to a full
1016       equation of state: JMD95P or MDJWF)
1017     - fixed several errors and redundancies in the data file
1018     - experiment uses looped cells
1019     - added matlab directory with diagnostic scripts for plotting of output
1020    
1021    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1022     - read AIM physics parameters from a file (data.aimphys)
1023     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1024    
1025    checkpoint46j_post
1026    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1027    o move wVel computation at the end of the time step, in S/R integr_continuity
1028    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1029    o update timeave pkg for wVel diagnostic.
1030    checkpoint46j_pre
1031    
1032    checkpoint46i_post
1033    o Clean up AIM package (and keep the results unchanged):
1034      include CPP_OPTION and use IMPLICT NONE in all routines ;
1035      declare all the variables _RL ; use _d 0 for all numerical constants.
1036      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1037    
1038    checkpoint46h_post
1039    o cleaned up the use of rhoNil and rhoConst.
1040      - rhoNil should only appear in the LINEAR equation of state, everywhere
1041        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1042        and the dynamical equations are all divided by rhoConst
1043    o introduced new parameter rhoConstFresh, a reference density of fresh
1044      water, to remove the fresh water flux's dependence on rhoNil. The default
1045      value is 999.8 kg/m^3
1046    o cleanup up external_forcing.F and external_forcing_surf.F
1047      - can now be used by both OCEANIC and OCEANICP
1048    checkpoint46h_pre
1049    
1050     Added code to convert surface volume flux (fresh water) into
1051     a mass flux when using P coordinates in the ocean (OCEANICP).
1052     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1053    
1054    checkpoint46g_post
1055    o Include a new diagnostic variable phiHydLow for the ocean model
1056      - in z-coordinates, it is the bottom pressure anomaly
1057      - in p-coordinates, it is the sea surface elevation
1058      - in both cases, these variable have global drift, reflecting the mass
1059        drift in z-coordinates and the volume drift in p-coordinates
1060      - included time averaging for phiHydLow, be aware of the drift!
1061    o depth-dependent computation of Bo_surf for pressure coordinates
1062      in the ocean (buoyancyRelation='OCEANICP')
1063      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1064        Theta, Salinity, and Pressure in the parameter list. This routine is
1065        presently contained in find_rho.F. This routine does not give the
1066        correct density for 'POLY3', which would be a z-dependent reference
1067        density.
1068    o cleaned up find_rho
1069      - removed obsolete 'eqn' from the parameter list.
1070    o added two new verification experiments: gop and goz
1071      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1072    checkpoint46g_pre
1073    
1074    checkpoint46f_post
1075    o Enable tangent linear (forward mode) gradient checks:
1076      - extended active file handling to g_... files
1077      - added TANGENT_SIMULATION to theSimulationMode
1078      - extended grdchk package accordingly
1079    o added tangent linear setup in verification/carbon/code_ftl
1080    o added adjoint setup in verification/front_relax/code_ad
1081    
1082    checkpoint46e_post
1083    o Added new equation of state -> MDJWF
1084      - EOS of McDougall et al., 2002, JAOT, submitted
1085      - caveat: the equation of state is only valid for a smaller (more
1086        realistic?) range of values than JMD95P/Z and UNESCO
1087      - added masks to the calculation of pressure in store_pressure
1088      - added more check values for density in check_eos (ini_eos.F), some of
1089        the old check values are out of the range of the MDJWF-eos, so don't
1090        expect perfect matches for those
1091    checkpoint46e_pre
1092    
1093    checkpoint46d_post
1094    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1095      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1096      case of pressure coordinates. eosType='JMD95Z' in
1097      combination with buoyancyRelation='OCEANICP' now causes an error.
1098    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1099      in find_alpha/beta.
1100    checkpoint46d_pre
1101    
1102    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1103      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1104    
1105    checkpoint46c_post
1106    o Changes necessary for ocean in p-coordinates
1107     -  Added new buoyancy relation = 'OCEANICP'
1108     -  Added new parameters = gravitySign (this used to be contained inside
1109        the factor dRdZ which I added when we first switched to R coordinates).
1110     X GM/Redi is not compatible (yet)
1111     X bottom drag and no-slip need to be debugged.
1112    checkpoint46c_pre
1113    
1114    checkpoint46b_post
1115    o Added new equation of state -> JMD95Z and JMD95P
1116      - EOS of Jackett and McDougall, 1995, JAOT
1117      - moved all EOS parameters into EOS.h
1118      - new routines ini_eos.F, store_pressure.F
1119    o Added UNESCO EOS, but not recommended because it requires
1120      in-situ temperature (see JMD95)
1121    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1122      unesco.f to be used with POLY3
1123    checkpoint46b_pre
1124    
1125    checkpoint46a_post
1126    o Added (atmospheric) pressure loading
1127      - new field in FFIELDS.h, etc...
1128      - new cpp flag ATMOSPHERIC_LOADING
1129    o Changed hFacC to _hFacC in calc_phi_hyd.F
1130    o Added SHORTWAVE_HEATING to some files for consistency
1131    checkpoint46a_pre
1132    
1133    checkpoint46
1134    further merges from release1_p5
1135    o new ctrl package
1136      - adopted from ECCO environment to enable optimization
1137      - added Eliassen Palm fluxes to controls
1138    o added Eliassen Palm flux controls to gradient check package
1139    o cost package
1140      - Compatible with new ctrl package
1141      - added Eliassen Palm cost hooks
1142      - modif's of existing cost functions
1143    o Adjoint-related bug fixes in kpp:
1144      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1145      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1146    o autodiff package
1147      - flow directives:
1148        + new for S/R do_the_model_io
1149        + enhanced for S/R checkpoint
1150        + new gmredi.flow
1151      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1152        disable adcommon.h/g_common.h by default.
1153      - fixed problem for adjoint of global_max
1154    o modified verification/carbon/
1155    o New setup for adjoint of global_ocean
1156    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1157    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1158    o incorporated hooks for sponge layer code (external_forcing.F)
1159    
1160    checkpoint45d_post
1161    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1162    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1163      (affects plume_on_slope "cg2d" output)
1164    o add new parameter deltaTfreesurf for free-surface time stepping
1165    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1166    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1167    o change phiMin in exp1 (to agree with documentation)
1168    o add new flags:
1169     - T,S forcing inside/outside Adams-Bashforth
1170     - turn off temp,salt advection and/or forcing
1171     - for each tracer, define internal flag for multiDimAdvection & A-B
1172    o monitor: change definition of KE to check conservation of Energy
1173    
1174    checkpoint45c_post
1175    o Removed f90 comments ("!")
1176    o Modified initialisations to enable exf package for MITgcm
1177      (without invoking ECCO_PACKAGE).
1178    o modifications to gradient check package (Martin Losch)
1179      - enable centered differences
1180      - modified format of standard output
1181    
1182    checkpoint45b_post
1183    o cleaned exchange calls in cg2d
1184    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1185    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1186      to configure barotropic setup (Martin Losch)
1187    o moved some initialisations within bi,bj loop in dynamics
1188      (TAF flow dependency)
1189    o in initialise_varia, moved call packages_init_variables
1190      before convective_adjustment_init
1191      (corresponding adjustment of TAF tape initialisation).
1192    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1193    
1194    checkpoint45a_post
1195    o compute Rho over the whole domain (extend iMin,jMin indices)
1196    o specific exchange for X-slice domain (case Ny=1)
1197    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1198    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1199    
1200    checkpoint44h_post = checkpoint45
1201    o Fix to restore differentiability:
1202      place at which packages_init_variables is called in
1203      initialise_varia is crucial for reverse control flow.
1204    o modifications in GMRedi to enable stable adjoint
1205      (corresponding modif's in thermodynamics, dynamics)
1206    o added missing hook for sponge layer code in external_forcing
1207    o modified test cost functions
1208    o storing in gad_advection (plus removal of write(0,*)!
1209    o missing headers TR1.h added in convective_adjustment routines
1210    o errorMessageUnit set non-equal zero in eeboot
1211      (conflict on some platforms, e.g. IBM SP3)
1212    o modified carbon verif.
1213    
1214    checkpoint44h_pre
1215    o vertical grid option: allow to put the Interface at the middle between
1216      2 cell-centers ; replace delZ in pkg/kpp by drF.
1217    o GM Advective form: Tracers are advected using the residual transport (=
1218      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1219    
1220    checkpoint44g_post
1221    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1222      results) ; ifdef missing in thermodynamics.F
1223    
1224    checkpoint44f_pre,checkpoint44f_post
1225    o added PTRACERS package
1226      This allows an arbitrary number of passive tracers to be integrated
1227      forward simultaneously with the dynamicaly model.
1228      + Implemented so far:
1229        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1230        - I/O and checkpointing
1231        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1232      + Not implemented so far:
1233        - KPP
1234        - OBCS
1235      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1236        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1237        line in data.pkg.
1238      + This package is disabled by default since it increases storage.
1239    
1240    
1241    o testscript: added -cleanup option
1242    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1243                 b) enable to filter 2D fields.
1244    
1245    checkpoint44e_pre,post
1246    o re-wrote convective adjustment to use pre-calculated weights
1247      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1248      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1249      Original calls to convect() still in place.
1250    
1251    chkpt44d_pre,post
1252    o added missing EXCLUDE_MONITOR flags
1253    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1254      (incompatible typ in MIN/MAX expressions caused problems
1255      on IBM SP3)
1256    o in genmake added variable MAKEDEPEND
1257      plus resetting for case SunOS
1258    o added timer_stats.c routine for IBM SP3
1259    o removed variables in dynamics
1260    !!! I forgot to create tag chkpt44d_pre !!!
1261    !!! But chkpt44d_pre = chkpt44c_post    !!!
1262    
1263    o real fresh water flux implemented with non-linear free-surface.
1264    
1265    chkpt44c_pre,post
1266    o few fix (mask in shap_s2, EmPmR in external_field_load,
1267      USE_NATURAL_BCS in solve_for_P);
1268    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1269    
1270    checkpoint44b_pre/_post
1271    o merge of relevant stuff from the ecco-branch:
1272      - genmake: removed $S64 overwrite for case SunOS
1273      - pkg/exf: update and corrections for field swapping and obcs
1274      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1275                  harmonized between ECCO and MITgcm
1276      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1277                      updated checkpointing_lev... lists for obcs
1278      - model/src: minor changes in forward_step, plot_field
1279                   added directive for divided adjoint in the_main_loop
1280      - pkg/mdsio: added mdsio_gl_slice
1281    
1282    o check parameters & config (chkpt44a_pre,post)
1283    o OBC and NonLin_FrSurf.
1284    
1285    checkpoint44
1286    o fix bug in mom_vi_del2uv
1287    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1288    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1289    o update AIM experiments (NCEP input files)
1290    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1291    o added some stuff for AD
1292    
1293    checkpoint43
1294    o added two new advection tests
1295    o added global 4x4 degree ocean test
1296    o added test of H&S94 with free surface on cube
1297    o some final mods for gradient check, adjoint,...
1298    
1299    checkpoint42
1300      Fixed AD-related problems:
1301    o Store directives up-to-date with re-arranged Adams-Bashforth
1302      (mainly thermodynamics.F)
1303    o New store directives for multi-dim. advection schemes
1304      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1305      * new common block and key passkey
1306      (mainly gad_advection.F)
1307    o Modified store directives for split of dynamics/thermodynamics
1308      for the case ALLOW_KPP
1309    o Cleaned argument list for timestep_tracer.F
1310    
1311    checkpoint41
1312    o re-formatted/added comments in prologues of key subroutines
1313      to work with protex
1314    
1315    checkpoint40
1316    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1317    o added FLT (floats) package from Arne along with demo. experiment
1318    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1319      implementation of forward-in-time forcing terms
1320    o more mods for non-linear free-surface including new variable
1321    o modified multi-dim method to work on cube
1322    o bug fix in KPP (from DM)
1323    
1324    checkpoint40pre9
1325    o added DST advection schemes
1326    o fix MPI bug on SGI's
1327    o modifications for non-linear free-surface
1328    o fixed conditionals for fixed flow/passive tracer only mode
1329    o added tension/strain form of stress tensor
1330    o changes to commenting of arguments for TAF/TAMC
1331    o added/updated many matlab scripts
1332    o added multi-dimensional advection method for tracers
1333      
1334    checkpoint40pre8
1335    o new package rw/
1336      Added method for dumping intermediate local arrays:
1337      mdsio_writetile - same as mdsio_writefield except works from inside
1338                        bi,bj loop
1339      mdsio_writelocal - same as mdsio_writetile except works for local
1340                         arrays
1341      write_local_r? - higher-level wrapper for mdsio_writelocal
1342      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1343      Example given at end of mom_vecinv.F that dumps some local arrays.
1344    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1345      control flux-form versus vector invariant code.
1346      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1347      or genmake -DISABLE ...
1348    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1349      (additional storing is now needed for case vecinv;
1350      currently nothing implemented to switch this storing off
1351      in case fluxform is used since no CPP flag available).
1352    
1353    checkpoint40pre7
1354    o bug fix in dynamics.F
1355      calc_viscosity called before k=1,Nr loop.
1356    o added some #ifdef's ALLOW_PASSIVE_TRACER
1357    o cleaned initialisations in ctrl_map_ini
1358      related to TAF
1359    
1360    checkpoint40pre6
1361    o split dynamics into thermodynamics & dynamics
1362    o corresponding split of calc_diffusivity into
1363      calc_diffusivity, calc_viscosity
1364      (kpp_calc_diff, kpp_calc_visc).
1365    o Added diffkr, kapgm to control variables
1366    o bug fix in gmredi_slope_limit for ldd97
1367    
1368    checkpoint40pre5
1369    o proper initialization of Adams-Bashforth time stepping
1370      + uses forward step for very first step of model (iter=0)
1371    o re-generated *all* output since almost all output is modified by this
1372      change (sorry but we've been putting this one off for about 2 years)
1373      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1374        *not* regenerated since they are already out of date and I don't
1375        want to create the impression that they are suddenly working.
1376    o removed KAP stuff for DEC's
1377    o modified/added many .cvsignore files in */code and */input
1378    o added new expt "solid-body.cs-32x32x1"
1379      + this uses an alternative form of ini_curvilinear_grid.F which
1380        is not necessarily any better than the current one...
1381    
1382    checkpoint40pre4
1383    o added re-initialisations of utrans,vtrans,rtrans in
1384      calc_common_factors which are crucial for TAF.
1385    o extended iMin,jMin range for calc_common_factors,
1386      calc_diffusivity
1387    o added option ALLOW_PASSIVE_TRACER
1388    o a few minor updates and fixes
1389    
1390    checkpoint40pre3
1391    o created calc_gtr1.F for gad package
1392    o split the_main_loop and re-introduced forward_step
1393    o some recomputations of nIter0 for TAMC
1394    
1395    checkpoint40pre2
1396    o Updated to latest branch of AJA, JMC
1397    o Added gradient check package
1398    o Added routines for passive tracer handling
1399    o Added carbon sequestration sensitivity experiment
1400    
1401    checkpoint39
1402     o Modifications and fixes to support TAMC
1403       (mainly missing or wrong directives)
1404     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1405       in addummy_in_stepping
1406     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1407     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1408     o Included following packages:
1409       cal: calendar
1410       exf: external forcing
1411       ecco: essential routines to control use of cal, exf
1412             (NB: this is not the full ECCO environment)
1413     o disabled some packages by default in genmake
1414    
1415    checkpoint38
1416     o see notes_c37_adj.txt
1417     o corrected wrong layer index in external_forcing_t
1418     o replaced the_main_loop/forward_step by the_main_loop
1419     o removed forceoutput from write_state
1420       (replaced criteria for initial/final state)
1421     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1422    
1423    checkpoint37
1424     o mdsio.F routine split and packaged in pkg/mdsio
1425       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1426        used unless genmake -disable=mdsio)
1427     o allow a more precise surface-geopotential gradient for the atmosphere
1428       taking into account the change in space of Alpha (=1/rho) at the surface.
1429     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1430       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1431     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1432       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1433       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1434     o Time-Average diagnostics defined as a pseudo package "timeave".
1435     o pickup files : old pickup (before c35) did not work with new code (c35
1436       and after) unless activating 2 commented lines in initialise-varia.
1437     o Non-Hydrostatic pickup file Pb fixed.
1438     o bug with Rigid-lid version (since c35) fixed.  
1439    
1440    checkpoint36
1441     o implement Crank-Nickelson barotropic time-stepping
1442     o recover Time-Average diagnostics
1443     o fix Pb in checkpoint (PR#19)
1444     o AIM become a standard package ; clean unused CPP_kees
1445    
1446    checkpoint35
1447     o subtantial rewrite of dynamics.f
1448     o allows staggered time-stepping
1449     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1450     o added bottom drag (linear + quadratic)
1451    
1452    checkpoint34
1453     o Modified exchange routines for correct reverse simulation.
1454     o Added verification output to comply with bug fix in impldiff.F
1455       as of c33 (exp2, natl_box).
1456     o Corrected store directives in dynamics.F
1457     o Corrected array boundaries in impldiff.F
1458     o Corrected array dimensions in gmredi.
1459       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1460     o Added routine GLOBAL_SUM_INT to global_sum.F
1461     o Added mdsio_gl.F for ECCO purposes.
1462    
1463    checkpoint33
1464     o Fixed bug in lower BC in impldiff.F
1465     o Fixed confusion about units of forcing arrays in FFIELDS.h
1466       namely Fu,Fv,Qnet,Qsw,EmPmR:
1467       - Removed verification/natl_box/code/external_fields_scale.F
1468         (did not differ from that in model/src)
1469       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1470         (see FFIELDS.h for description)
1471       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1472         kpp_calc.F and kpp_transport_t.F
1473       - Removed model/src/external_fields_scale.F and calls to it
1474       - verification/natl_box uses flux data with "atmospheric" sign so
1475         a special version of external_fields_load.F is used to
1476         change the data as it's read in. This way, the arrays
1477         have the right units and signs at all times tha a user could
1478         possibly use them.
1479     o Corrected genmake to delete a temporary file during configuration
1480    
1481    checkpoint32
1482     o Scaling of forcing fields moved from external_forcing.F to
1483       external_fields_scale.F, called directly after loading fields.
1484     o Surface relaxation terms added to surface tendency fields in
1485       extra subroutine.
1486     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1487       fields.
1488     o Changes in GMRedi to comply with packaging structure.
1489     o Modifications and bug fixes in KPP package.
1490     o Verification experiment for KPP added (verification/nat_box/)
1491    
1492    checkpoint31
1493     o Packages interface brought in line with defined standard
1494       -> new routines packages_...F
1495       -> changes in initialise_fixed.F, initialise_varia.F
1496       -> enables initialisation interface for ECCO package
1497     o Rescaling of external forcing fields immediately after read
1498       (removed from external_forcing.F)
1499       -> new: surface_fields_scale.F
1500       -> affects ini_foorcing.F, external_fields_load.F
1501     o Computation of surface tendencies before tendency updates.
1502       -> new: external_forcing_surf.F
1503     o Change of variable names useGMRedi, useKPP, useECCO
1504     o Further changes in dynamics.F, impldiff.F for TAMC
1505     o Tested for experiments 0, 2, 4.
1506       - not yet tested for GMRedi.
1507       - not yet tested for KPP.
1508    
1509    checkpoint30
1510     o Updates for OBCs
1511     o New experiment for test OBCs (internal_wave)
1512     o New output.txt in verification/exp4/results/
1513     o Updates for KPP: calculation of viscosity corrected, new variables
1514       kpp_dumpFreq and kpp_taveFreq
1515     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1516       and entry for T90 in genmake
1517    
1518    checkpoint29
1519     o packaged KPP and GM/Redi
1520    
1521    checkpoint28
1522     o Corrected initialization of hFacMin for difference vertical coordinates
1523     o Modified calculation of partial cell thickness to more robust algorithm
1524     o config_summary.F: replaced write_1D_... by write_0D_...
1525       read_write.F: added subroutines write_0D_...
1526     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1527       included some initialisations required for TAMC.
1528     o routine calc_isoslopes: modified sqrt computation to make it
1529       differentiable for zero argument.
1530     o routines dynamics, impldiff:
1531       included store directives and tape key computations required for TAMC.
1532     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1533    
1534    checkpoint27
1535     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1536       formulation works properly with variable resolution.
1537     o restructured the calling tree between the_model_main() and dynamics()
1538     o split initialise() into initialise_fixed() and initialise_varia()
1539     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1540       in new routine ini_psurf()
1541    
1542    checkpoint26
1543     o moved some #ifdef in optional routines to encompass everything
1544       except the argument declarations. This was using up some memory.
1545     o fixed macros like _ADT to work with both versions of Linux cpp
1546     o cleaned up some unused and uninitialized variables
1547       (helps when debugging with strict compile options)
1548     o split up CPP_EEOPTIONS.h into options and macros
1549       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1550     o patch for 2 processor JAM mode
1551    
1552    checkpoint25
1553     o updates for OBCs and NH
1554     o dramatically reduced memory usage
1555     o added "JAM" routines for use on Artic network
1556     o parameterization of convection by implicit vertical diffusion
1557     o added a diagnostic of convective index
1558     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1559       (this is was partly for OBCs and NH but also in anticipation of
1560        an explicit free-surface option)
1561     o initial state input files for U and V
1562    
1563    checkpoint24
1564     o Removed some spurious "REAL"s
1565     o Updated KPP to latest version from JPL
1566     o Added a COS(latitude) in horizontal viscosity
1567    
1568    checkpoint23
1569     o Added del^4 diffusion for salt and temperature
1570     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1571    
1572    checkpoint22
1573     o Made many small changes: implicit none, format(i5), etc...
1574     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1575    
1576    checkpoint21
1577     o Introduced new I/O package that supports direct-access records (mdsio.F)
1578     o Split-up mid-level I/O routines
1579     o Updated input data for experiments 0,1,2,4 and 5
1580     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1581    
1582    checkpoint20
1583     o Tidied up open-boundaries some more
1584     o Added non-hydrostatic code
1585     o Fixed some input data
1586     o Modified MPI start-up to work in "coupled" context.
1587    
1588    checkpoint19
1589     o Tidied up directory structure for verification experiments.
1590     o Added new code for open boundaries.
1591     o Corrected advective terms near boundaries.
1592     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1593     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1594     o Split default parameters out of ini_parms.F into set_defaults.F.
1595    
1596    checkpoint18
1597     o Further changes for optional code generation with
1598       CPP - ugh!
1599    
1600    checkpoint17
1601     o Beginning to incorporating modularity
1602       for supporting atmos. and ocean configs.
1603     o Small changes for TAMC complinace
1604     o New ultra simple test case. Barotropic box
1605       configuration "exp0".
1606    
1607    checkpoint16
1608     o Minor changes to exchange routines to support
1609       accumulation in reverse mode. Adjoint of an
1610       assignment is an addition.
1611     o Changes to support compilation by TAMC (LR(1)
1612       syntax) and by g77 under Linux ( 72 character
1613       limit ).
1614    
1615    checkpoint15
1616     Rewrote exchange routines to allow
1617     o General tile <-> tile connectivity.
1618     o TAMC reverse mode flag ( is this really needed? )
1619     o Variable width overlap and exchange region widths.
1620     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1621       shmput/shmget, VIA, SYSV shmem and every other cool
1622       communication method.
1623    
1624    checkpoint14
1625     Consistent isomorphism chages made. These allow dynamical core
1626     to support both pressure and meters as a vertical coordinate.
1627    
1628    checkpoint13
1629     Release which corrects global_max problem and a couple
1630     of KGM time-averaging diagnostic errors. Also contains
1631     a double-gyre experiment setup as well as the baseline
1632     4 degree global template. The double gyre template is
1633     organised to allow it to be applied automatically to
1634     the baseline configuration.
1635    
1636    branch-point-rdot
1637     A few tidy-ups have been made bt the real point of this
1638     check-point (excuse the pun) is to allow a branch to be
1639     made for the purposes of adding the rDot alterations.
1640     I don't want to commit the rDot to the main-trunk until
1641     we've actually tested it...
1642    
1643    checkpoint12
1644     Tidy up and added generic genmake script (formerly
1645     configure script).
1646     Released to testers.
1647    
1648    checkpoint11
1649     Re-arranged initialise() and introduced ini_vertical_grid()
1650     and ini_masks_etc().
1651    
1652    checkpoint10
1653     Introduced the configure script.
1654     Separated out the diags package.
1655     Added template for writing time-averages of tile/intermediate quantities.
1656     Updated SIZE.h in exp2 and made the data big-endian.
1657    
1658    checkpoint9
1659     MPI fix. Filename changes (meta/data). salbin*y stuff.
1660     General tidy-up.
1661     SST.bin SSS.bin added to verification/exp2
1662    
1663  checkpoint8  checkpoint8
1664   Inludes time-dependant forcing and time-averaging.   Inludes time-dependant forcing and time-averaging.
1665   Works at 4x4 and 2.8125x2.8125 global   Works at 4x4 and 2.8125x2.8125 global

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