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revision 1.6 by adcroft, Mon Jun 22 16:09:37 1998 UTC revision 1.284 by dimitri, Mon May 3 06:09:39 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 removed ADI dynamic solver from pkg/seaice
7    o replaced all occurrences of 1/CSTICE or 1/CSUICE
8      - they caused a segmentation fault under certain circumstances
9      - removed unused field WATR
10    o bug fix in exf-package:
11      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
12         now reflect that.
13    o small fixes in the cal-package:
14      - set reference date to first of January for the 'model'-calendar
15      - failing of cal_CheckDate in cal_FullDate now actually results in a
16        warning
17    o small modifications in exf-package to increase flexibility:
18      - change climtempfreeze from a constant to a runtime parameter that
19        is specified in data.exf_clim (default = -1.9)
20      - introduce runtime parameter windstressmax (default = 2.0) that is
21        specified in data.exf
22    o fix in pkg/thsice:
23      - update Evap (Tsf changes) to be consistent with Latent heat flux
24      - maintain snow precipitation unchanged (even if Tsf >=0).
25     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
26    
27    checkpoint52m_post
28    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
29      this does not change any of the results, because myIter=0 in swfrac always
30      lead to jwtype=2 (the default anyway), but the call makes little sense
31      as a default
32    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
33    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
34      atmospheric model (AIM) to use it ; add a "slab ocean" component.
35    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
36    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
37    o extending useSingleCpuIO option to work with new exch2 I/O format
38      - old-style, missing-tile I/O is still accessible by defining CPP
39        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
40    o monitor package can write to NetCDF files and/or STDOUT
41    o fix re-definition bug in MNC_GRID_INIT_ALL()
42    o doc/api_reference added
43      - a framework for building an API Reference Manual using all
44        the "protex" comments embedded in the code
45      - see pkg/generic_advdiff, pkg/mnc for examples
46    o MNC:
47      - make myThid the last argument for all subroutines
48      - new default for the grid files: NO halos
49      - add useMNC and other run-time flags
50      - separate per-file-group handling of the unlimited dimension
51      - early initialization of MNC w/ flags read at the eeboot stage
52        and lookup tables set in initialize_fixed
53      - write all MNC output to a freshly-created directory
54    o thermodynamics sea-ice (thsice) is now tested with testreport.
55    o test exp. advect_cs: use the standard cs32 grid ; update output.
56    o Added functionality to grdchk:
57      pick global i,j,k position (or nearest wet) where to perform check.
58    
59    checkpoint52l_post
60    o new land formulation:
61      a) use ground enthalpy as prognostic variable to ensure exact
62         energy conservation.
63      b) account for water temperature and for latent heat of freezing
64         in all processes (rain, run-off, ground storage)
65      c) compute surface and ground temperature implicitly.
66    o aim_v23 modification for new land model:
67      a) Treat separately land / ocean / sea-ice surface fluxes
68         to allow implicit computation of land & sea-ice surface temp.
69      b) add snow precipitation.
70    checkpoint52l_pre
71    
72    o fix problem (when 1 tile is empty) in min/max monitor.
73    o fix bug in timeAve (u,vZetatave in common block)
74    o no restoring terms under ice for pkg/seaice
75    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
76    o bug fix for pkg/seaice pickups
77    o change MNC call locations and add coordinate attributes
78    o mask vorticity at the corner ; affects global_ocean.cs output
79    o fix ini_curvilinear_grid ; test CS experiments with mpi
80    o aim.5l_cs: modify sea-ice fraction input file ; update output
81    o exf: Adding simple range check routine for exf fields after read
82    
83    checkpoint52k_post
84    o removed top-level directory "diags"
85      - we migrated these functions to pkg/timeave a long time ago
86    o fixed bug introduced in pkg/monitor
87    o accuracy ctrlprec = 32 insuffient for gradient checks using
88      averaged fields (I/O via cost_averages)
89      -> use ctrl.h in active_file*.F to control I/O precision.
90    o paramter list of CALL ADTHE_MAIN_LOOP
91    o added initial do_the_model_io to ecco
92    o set all ...Freq to zero after cost_final
93      taveFreq, dumpFreq, pChkptFreq
94    o MAIN and ECCO differentiability restored
95    
96    checkpoint52j_post
97    o fix nchklev in tamc.h for global_ocean...
98    o Bringing flow and store directives up-to-date
99    o Really weird thing!
100      call do_the_model_io from the_main_loop with parameters
101      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
102      TAF places a faulty re-call of initialise_varia
103      after cost_final call which should not be there!
104    checkpoint52j_pre
105    
106    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
107      error messages
108    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
109    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
110      debug output
111    o modfied mdsio_writefield.F to handle non-global files under exch2
112    o update AIM Cubed-Sphere exp (aim.5l_cs):
113      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
114    o update AIM Equatorial Channel exp:
115      use standard aim_v23 pkg and change the SST fields to be more realistic.
116    o globalFile now works with exch2
117    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
118      mon_vort3.F to make exch2 friendly with >1 tile per cube face
119    o limit timeave output for hi-res integrations
120    
121    checkpoint52i_post
122    o removed CPP_EEOPTIONS.h from verification/*/code
123    o updated the tiling for global_ocean_pressure
124    checkpoint52i_pre
125    
126    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
127      the old pkg/aim).
128    
129    checkpoint52h_pre
130    o shortened offending lines in exch2_send_rx?.template
131    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
132    o genmake2: add build & execute test for NetCDF code
133    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
134      old grid files, moved CPP_EEMACROS.h to pkg/exch2
135    o added useSingleCPUIO flag to monitor.F and mon_out.F
136    o added temporary hack for sea-ice dynamics on the cube:
137      metric terms are ignored and it is assumed that
138      there is no sea-ice on cube faces 1, 2, 4, and 5.
139    
140    checkpoint52f_post
141    o added exch2 cube routines to pkg/exch2
142    o modified hs94.cs-32x32x5 to use it
143    o added new grid files to hs94.cs-32x32x5
144    checkpoint52f_pre
145    
146    checkpoint52e_post
147    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
148      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
149    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
150      to work with implicit vertical advection and AB ;
151    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
152    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
153     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
154    checkpoint52e_pre
155    
156    o fix bug in impldiff when Nr=1 or Nr=2.
157    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
158    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
159    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
160      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
161    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
162    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
163    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
164    
165    checkpoint52d_post
166    o re-tiled many expts to allow comparison in multi-processor mode
167      - updated output accordingly
168      - changed hs94.128x64x5 to use intial T from file rather than use the
169        random number generator
170    o add infrastructure in model routines for fizhi and gridalt packages
171    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
172    o changes to permit hi-res, cubed-sphere, configuration
173      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
174      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
175      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
176        of surface winds for the cube
177      (A verification experiment, based on global_ocean.cs32x15, but with
178       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
179       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
180       complete with example surface forcing files and matlab scripts to look
181       at the output and compare it with that of global_ocean.cs32x15.)
182    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
183       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
184       to conform to the common rule.
185    o check-in the first version of the coupler + interfaces for multi-components
186       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
187       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
188       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
189       - ocean and atmos. share the same horizontal grid (no interpolation).
190       - exchanges between component and coupler is done in forward_step
191    o new verification experiment, cpl_aim+ocn:
192       coupled ocean - AIM atmosphere on cs32 grid.
193    
194    checkpoint52d_pre
195    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
196    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
197    
198    checkpoint52c_post
199    o Fixing OPTIONS files for use of exf:
200      - ALLOW_ECCO not needed
201      - ECCO_CPPOPTIONS.h should not be included from
202        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
203        as has been the case in the past
204      - All cal/exf related options are currently set in
205        single header file. Should remain so until we
206        agree on a consistent new policy.
207    o Removed all CPP options for cal package.
208      cal has no more CPP options.
209    o modified STOREs in GAD_ADVECTION
210    o corrected key comp. for passkey
211    
212    checkpoint52b_post
213    o new version: "thsice" of thermodynamic sea-ice pkg:
214     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
215     - modify fluxes but do not change theta directly;
216     - light cleaning of bulk_force pkg (still needed with thsice).
217     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
218       + output_thsice.txt to test thsice & bulk_force pkgs.
219    o put back grid & coriolis monitor output.
220    checkpoint52b_pre
221    
222    o call "do_the_model_io" at the beginning (=> dump initial state)
223    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
224    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
225      (need info on NUMBER_OF_PTRACERS)
226    o missing PTRACERS headers in some routines
227    o default tamc.h in pkg/autodiff supposed to crash
228      to ensure proper customization
229    
230    checkpoint52a_post
231    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
232      - moved surfaceTendencyTice from pkg/seaice to main code
233      - subroutine FREEZE_SURFACE now limits only surface temperature
234        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
235        => new output.txt for global_ocean.cs32x15 & global_with_exf
236      - keep the old version of FREEZE for backward compatibility;
237        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
238      - corresponding modifs for TAF directives
239    o added surface flux output variables to TIMEAVE_STATVARS
240    o time-averaged output for pkg/ptracers
241    o fix problem with ECCO-related divided adjoint
242      snapshot file was missing some ad-variables,
243      but no warning issued by TAF
244    
245    checkpoint52a_pre
246    o some bug fixes for #undef REAL4_IS_SLOW
247    
248    checkpoint52 = ecco_c52_e35
249    o after testing adjoints of checkpoint51u_post
250    
251    checkpoint51u_post
252    o this is the post-merge tag of the ecco-branch
253      (needs another clean checkout and re-testing)
254    o various natl_box_adjoint configs and results
255      but no input fields
256    o obcs adjoint not yet merged!
257    o adding ECCO global 1x1 and 2x2 degree configs
258    o updated/extended some store directives for seaice
259    o pkg/ecco now containes ecco-specific part of cost function
260    o top level routines the_main_loop, forward_step
261      supersede those in model/src/
262      previous input data.cost now in data.ecco
263      (new namelist ecco_cost_nml)
264    o in ctrl/ cleaned some cross-dependencies and updated CPP options
265    
266    checkpoint51t_post
267    o this is the pre-merge tag of the ecco-branch
268    
269    checkpoint51s_post
270    o cleanup: removed various obsolete #define-s
271    o pkg/grdchk
272      - renamed 'ph-grd 3' to 'grad-res'
273      - merged from ecco-branch
274        (remaining bug fixes for obcs gradient checks)
275      - additional high-precision output for testreport
276        (grep for 'precision_grdchk_result')
277    
278    checkpoint51r_post
279    o cleaned up or removed CPP_OPTIONS.h files
280    o updated results for some of the tests to reflect the new
281      optfiles (-ieee: -O0 instead of -O3)
282    
283    checkpoint51q_post
284    o cd_code:
285      - moved cd_scheme.F -> cd_code_scheme.F
286      - separate read_checkpoint from cd_code_ini_vars.F
287      - separated cd_code part from write_checkpoint
288      - updated AD_SOURCE, generated .flow
289      - added CD_CODE_VARS.h to the_main_loop
290      - Moving cd_code specific store dir.s to pkg/cd_code
291    o ctrl package totally restructured
292      - pack/unpack now optional and decoupled from
293        xx_/adxx_ I/O
294      - ctrl_pack/unpack cleaned
295        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
296      - confined inclusion of AD_CONFIG.h to where necessary.
297    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
298    
299    checkpoint51p_post
300    o create initial cd_code package
301      - WARNING: the initialization of fields within packages
302        is broken because INI_FIELDS (where READ_CHECKPOINT is
303        called) is called *before* PACKAGES_INIT_VARIABLES.
304        This seems to be backwards since
305        1) its important to initially zero the entire field including
306           the "halo" region
307        2) zeroing needs to be done *before* reading pickup info
308           and the pickup call might or might not happen in any
309           particular run
310      - this needs an overhaul for R2
311    o cleanup verification/*/code/GMREDI_OPTIONS.h
312    o cleanup testreport
313    
314    checkpoint51o_post
315    o bringing AD-related verif's up to date with genmake2
316      - carbon/
317      - global_ocean.90x40x15/
318      - hs.94.1x64x5/
319      - (front_relax/ )
320    o (more) consistent directory structure for AD-related verif.'s
321    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
322    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
323    o bug fix in find_alpha.F for MDJWF:
324      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
325        change rho -> rho-rhoConst
326      - replace call find_rho to find_rhonum
327    o initialisation of rFlx extended to full array (required by TAF)
328      and shifted to thermodynamics
329    o removed PTRACERS.h in ptracers routine
330    o added surfacetendencyPtr to S/R parameter list pracers_forcing
331    o Correcting initialisations for fVerU, fVerV.
332    o helping TAF to recognize dependency on kUp for
333      fVerU, fVerV
334    o Replacing delZ by delR in pkg/ctrl/
335    checkpoint51o_pre
336    
337    o undid all of cp51 pending some cleanups and discussion
338    o added the [#include "AD_CONFIG.h"] statement to all files that need
339       it for adjoint/tl #defines
340     o re-worked the build logic in genmake2 to support AD_CONFIG.h
341     o removed tools/genmake since it no longer works
342    
343    checkpoint51n_post
344    o modifications to make FREEZE flux visible to pkg/kpp
345      - moved surfaceTendencyTice from pkg/seaice to main code
346      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
347      - subroutine FREEZE now limits only surface temperature
348        (this means new output.txt for global_ocean.90x40x15,
349         global_ocean.cs32x15, and global_with_exf)
350    o added surface flux output variables to TIMEAVE_STATVARS
351    
352    checkpoint51n_pre
353    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
354    o added [#include "AD_CONFIG.h"] to all files that use the following
355      defines:
356      - ALLOW_ADJOINT_RUN
357      - ALLOW_TANGENTLINEAR_RUN
358      - ALLOW_ECCO_OPTIMIZATION
359    
360    checkpoint51m_post
361    o incorporating changes to get TAMC/TAF working in genmake2
362      - added new TAMC/TAF targets to the Makefile
363      - various cleanups related to package handling
364      - these changes should have no impact on the forward model
365    
366    checkpoint51l_post
367    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
368     - faster algorithm for cal_addtime.F
369     - higher precision arithmetic, where needed
370     - pkg/exf *startdate variables changed from calendar date to
371       model integration time
372    
373    checkpoint51l_pre
374    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
375    o enable to apply restoring on S & T only in a latitude band.
376    o update output (external_forcing_surf modif. change truncation errors)
377       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
378    
379    checkpoint51k_post
380    o change default to: useNHMTerms=.FALSE.
381     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
382       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
383     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
384        exp1, ideal_2D_oce
385     - change data file of oceanic exp (leave the results unchanged for now)
386       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
387    o set gravitySign automatically according to the vertical coordinate used
388      (and change sign: back to "logical" value: +1 when R increases downward)
389    o added an include barrier to the default CPP_OPTIONS.h and
390      removed the #include "PACKAGES_CONFIG.h" from it
391    o fix a bug in mom_fluxform (from chk51j_post)
392    
393    checkpoint51j_post
394    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
395    o adjusted some flow directives (dynamics, thermodynamics)
396    o added cubed-sphere case to test cost function
397    o heckpoint_lev?_directives.h now include
398      pkg-specific directives, whenever those are enabled.
399    o Moving pkg-specific flow directives to corresponding pkg
400      Moving pkg-specific differentiation list to corresponding pkg
401      Moving pkg-specific checkpoint-lev storing to corresponding pkg
402      ---> conventions are
403           - pkg_ad.flow
404           - pkg_ad_diff.list
405           - pkg_ad_check_lev?_dir.h
406    
407    checkpoint51i_post
408    o merge of the branch-genmake2
409      - knowingly breaks the older genmake
410      - automatic generation of all ALLOW_${PKG_NAME} defines
411      - new testreport supersedes older testscript
412    o large number of package inclusion and header cleanups
413    checkpoint51i_pre
414    
415    o new output for adjoin of global ocean vector invariant
416    o fix for checkpoint of thermodynamic seaice and bulk_force
417    o Steph gchem various cleanups
418    
419    checkpoint 51h_pre
420    o fixed some single quotes
421    o modify gchem pkg to be more versatile
422    o modifications to clean up dic pkg
423    o add pkg/cfc
424    
425    checkpoint51g_post
426    o provide links for ARPACK and ADM*TLM
427    o start removing verification/vero/
428    o update AD-related stuff
429      (in particular some IF-statements in model/src/ routines)
430    o adding to verification/global_ocean.90x40x15/ adjoint of
431      vector invariant setup
432    
433    checkpoint51f_post
434    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
435    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
436      of tracer Green's fucntions for ocean inversion project.
437    
438    checkpoint51f_pre
439    o Added on-the-fly spatial interpolation capability
440        "USE_EXF_INTERPOLATION" to pkg/exf.
441      - This is a temporary Cartesian-grid hack until
442        the super-duper ESMF coupler becomes available.
443      - See verification/global_with_exf/README for usage example.
444      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
445        flags and modified pkg/seaice accordingly.
446    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
447        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
448        non-local transport term.
449    
450    checkpoint51e_post
451    o pkg/mom_vecinv:
452      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
453      - add time-ave diagnostic of vorticity advection.
454    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
455    o atmospheric geopotential: - include water vapor effect;
456                                - use p^kappa in p* scaling.
457    o land pkg: read initial state from files.
458    o AIM : add stratospheric drag in the upper level
459    
460    checkpoint51d_post
461    o change function ILNBLNK (=> last non-blank char.) to return zero
462      (instead of the string length) when the string. char is empty
463    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
464    o modif's to restore TAMC compatibility
465      - avoid "_d" constructs in PARAMETER declarations
466      - avoid interrupting lines by comment lines
467    o Use cluster local disks for purely local I/O
468      vs. globally visible disks needed for ctrl stuff
469      (merged from ecco-branch)
470      - new active_file_loc... and mdsio_..._loc routines
471      - affected packages: autodiff, ctrl, grdchk, mdsio
472    
473    checkpoint51c_post
474    o introducing integer flag debugLevel
475      - debLevZero: suppress all output
476      - debLevA: standard
477      - debLevB: equivalent to current debugMode=.TRUE.
478    o introducing pathname variable mdsioLocalDir for mdsio
479      that can be specified at runtime
480      (relevant for cluster I/O to local disk)
481    `
482    >>>checkpoint51b_post
483    adjoint of ptracers
484    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
485    o extended state in checkpoint_lev?, etc.
486    o alternative ctrl/cost with tr1 or ptracer
487    o new comlev1_bibj_ptracers
488    o new ptracers.flow
489    o made ptracers_forcing same as external_forcing_s
490    o added verification for adjoint with ptracers
491      - adm. grdchk fail so far
492      - tlm. grdchk OK
493      - checked tapelev/comlev recomputations: OK
494    <<<checkpoint51b_pre
495    
496    checkpoint51a_post
497    o added code for biogeochemistry package
498      - new pkgs: dic, gchem
499      - new subroutine in ptracers
500    o modify code for biogeo packages
501      - in model/src and pkg/ptracers
502    
503    checkpoint51
504    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
505      - autodiff, ctrl, exf, grdchk, seaice
506      kept separate packages
507      - cost, ecco, obcs
508    o updating verification/internal_wave, verification/lab_sea
509      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
510    
511    checkpoint50i_post
512    o Preparing next differentiable checkpoint and sync
513      of MAIN vs. ecco-branch
514      - 1st step: this one is differentiable
515      - 2nd step: next(! not this) checkpoint will have updated packages
516                  from ecco-branch)
517    
518    checkpoint50h_post
519    o new package "land": provide surface BC for AIM.
520    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
521    o AIM: use true log-P extrapolation for near surface temp (= as in
522        F.Molteni paper) ; update aim.5l_cs output.
523    o New variable in PARM03 for more flexible pickups
524    o somewhat cleaned package initialisation sequence for
525      ctrl/ cost/ ecco/ in packages_... routines
526    
527    checkpoint50g_post
528    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
529      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
530      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
531        made the default because of faster convergence than ADI
532    
533    checkpoint50f_post
534    o exf totally restructured
535      - replaced all exf_set_ routines by one generic exf_set_gen.F
536        and made sure it's still differentiable
537      - split exf_getffields.F into new exf_bulkformulae.F
538      - exf_inscal_/exf_outscal_ suffixes consistent with field names
539      - updated adjoint/makefile and relevant verif. accordingly
540    
541    checkpoint50f_pre
542     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
543          + change Evap over land. (update aim.5l_cs output)
544     o added missing .cvsignores and made uniform across expts
545     o changed configuration of tidal_basin_2d expt
546     o added pkg/debug functions for tracing code in fatal crashes
547     o tidied pkg/monitor to use MONITOR_OPTIONS.h
548     o new fn in pkg/monitor to stop model if solution grows too big
549     o removed lots of single quotes from comments
550    
551    checkpoint50e_post
552    o make KPP work with PTRACERS
553     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
554       nearly a copy of kpp_transport_s
555     - there is no analogue to SurfaceTendencyS, so I have to use
556       gPtr(of the surface layer) instead
557    o add a new platform SunFire+mpi (SunFire 15000) to genmake
558    checkpoint50e_pre
559    
560    checkpoint50d_post
561    o change kpp output from multiple-record state files to single-record state
562      files analogous to write_state.F
563    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
564      analogous to the cg2d-related output.
565    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
566      so that writing to internal file fn (with length 512) fails.
567    checkpoint50d_pre
568    
569    checkpoint50c_post
570    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
571    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
572    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
573    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
574    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
575    
576    checkpoint50c_pre
577    Merging from release1_p13:
578    o bug fix for pkg/seaice dynamic solver
579    o Added SEAICE_initialHEFF to pkg/seaice
580    
581    checkpoint50b_post
582    o store u*,v* in gU,V instead of in guNm1,gvNm1
583    o in order to put the momForcing out of the Adams-Bashforth:
584      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
585      to timestep.F
586    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
587    o re-generate output for highly sensitive test-exp:
588       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
589    
590    checkpoint50b_pre
591    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
592    o corrected CPP option mismatch in exf_Bulk... functions for case
593      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
594    
595    checkpoint50a_post
596    o Bug fix for merging between c50 and KPP.
597      ikey was passed from thermodynamics to kpp_calc via
598      common block rather than being recomputed in kpp_calc,
599      in contradiction with new key itdkey.
600      New key ikppkey created, and tamc.h headers updated.
601    
602    checkpoint50
603    - 2nd step of merge with ecco-branch:
604      merge changes in ecco-branch back into main trunk
605    - bug fix in find_alpha
606    - more storing in gmredi_calc_tensor.F, kpp_routines.F
607    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
608    - merged some sliced AD support routines
609    
610    checkpoint49
611    merged from ecco-branch:
612    o exf:
613      - Enable initialisation of forcing fields to constant
614        (runtime) values.
615      - in exf_getffields.F
616        Reduce i-/j-loop to interior domain, discarding overlaps.
617        That also fixes wrong TAF-key computations for key_1, key_2
618        with bulf formulae.
619      - exf_init.F modify #ifdef for exf_init_evap
620      - exf_getffieldrec.F, ctrl_getrec.F
621        The following INT-usages are not safe:
622          fldsecs  = int(fldsecs/fldperiod)*fldperiod
623          fldcount = int(fldsecs/fldperiod) + 1
624        and were modified.
625    o autodiff: checkpoint_lev...
626      - updated storing for bulk formulae (some arrays were missing)
627      - added state for seaice package
628      - synchronized with main branch
629    o DIVA:
630      Modif.s in
631      - the_main_loop.F
632      - the_model_main.F
633      and added cost_final_restore.F cost_final_store.F
634      o With these changes, it is possible to fully separate
635        the first forward run to compute the cost function (mdthe_main_loop)
636        and adjoint runs over individual DIVA intervals (adthe_main_loop)
637        into separate model executions.
638        This enables better tuning of DIVA to given queue sizes.
639      o Loss of cost function value in consecutive DIVA runs is
640        fixed by storing to 'costfinal' file.
641      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
642        beginning/end of adjoint integration is accounted for.
643      The current changes apply to TAF-1.4.26.
644      TAF has one remaining bug, requiring one manual change
645      (see MITgcm manual).
646    o cal: synchronized between MAIN and ecco-branch
647    
648    checkpoint48i_post
649    o Changes to restore differentiability of code w.r.t. previous tag
650      (mostly adding new routines to make list and replacing
651      pressure by totPhiHyd).
652    o Updated and merged grdchk package
653      - has both ADM and TLM checks
654      - works for single- and multi-proc.
655      - output cleaned
656      - worked successfully for parallel DIVA
657    o genmake:
658      - Adding -platform=SP4
659      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
660    o Modif. for DIVA:
661      ctrl_unpack should not be called in intermediate DIVA interval.
662      (similar thing would apply for active files such as
663      tbar, sbar, psbar, which should not be reinitialised;
664      only relevant for ecco-branch)
665    
666    checkpoint48h_post
667    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
668    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
669    o Added SEAICE_initialHEFF to pkg/seaice
670    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
671    
672    checkpoint48g_post
673    --- EOS:
674    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
675      store total Potential in totPhyHyd for diagnostics & EOS.
676    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
677    --- Pressure/geopotential gradient:
678    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
679    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
680      ( changes results of global_ocean_pressure )
681    o NLFS + z-coord.: add eta*Rho' contribution.
682    o accurate phiHyd when using interface-W at the middle between 2 centers
683     ( changes results of ideal_2D_oce )
684    o includes r* 2nd term in potential gradient.
685    
686    checkpoint48f_post
687    Merging from release1_p12:
688    o Modifications for using pkg/exf with pkg/seaice
689      - improved description of the various forcing configurations
690      - added basic radiation bulk formulae to pkg/exf
691      - units/sign fix for evap computation in exf_getffields.F
692      - updated verification/global_with_exf/results/output.txt
693    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
694      (SBO) core products, including oceanic mass, center-of-mass,
695      angular, and bottom pressure (see pkg/sbo/README.sbo).
696    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
697      to avoid negative values in shallow regions.
698      - updated verification/natl_box/results/output.txt
699      - updated verification/lab_sea/results/output.txt
700    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
701    o Added useSingleCpuIO option (see PARAMS.h).
702    o Updated useSingleCpuIO option in mdsio_writefield.F to
703      work with multi-field files, e.g., for single-file pickup.
704    o pkg/seaice:
705      - bug fix in growth.F: QNET for no shortwave case
706      - added HeffFile for specifying initial sea-ice thickness
707      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
708    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
709      kpp_transport_t.F, forward_step.F, and the_main_loop.F
710    o pkg/seaice:
711      - adjoint-friendly modifications
712      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
713    
714    checkpoint48e_post
715    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
716    o dynamics: change definition of computational domain & adapt mom_fluxform
717      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
718    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
719        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
720        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
721        global_ocean.90x40x15 global_with_exf global_ocean_pressure
722        inverted_barometer solid-body.cs-32x32x1
723      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
724    
725    checkpoint48d_post
726    o in preparation for r*:
727     a) use pre-computed gradient of hydrostatic potential:
728        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
729     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
730        => affects results of glob_oce_pressure (different truncation error)  
731      update output.txt of ideal_2D_oce & global_ocean_pressure
732    
733    checkpoint48d_pre
734    o in preparation for r*:
735      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
736      pass the 2 comp. of the grad. as arguments to momentum S/R.
737      but for the moment, only used if it does not change the results.
738    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
739    
740    checkpoint48c_post
741    Modifications in treatment of initial flux forcing controls
742    to avoid extra storing of flux fields.
743    
744    checkpoint48c_pre
745    o Added tidal_basin_2d experiment (currently 1D!)
746    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
747    
748    checkpoint48b_post
749    o r* coordinate added in #ifdef NONLIN_FRSURF block.
750     (modification to pressure gradient not yet implemented)
751    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
752      (for U & V) that are used for vertical advection of momentum.
753    
754    checkpoint48a_post
755    o In preparation for r*, use temp. array to compute vertical transport
756       in flux-form momentum pkg. => change results of few test-exp.
757      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
758                        lab_sea, natl_box & plume_on_slope
759    
760    checkpoint48
761    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
762    
763    checkpoint47j_post
764    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
765    o moved adexch from forward_step to addummy_in_stepping
766    o added exch in ctrl_map_...
767    o aveFreq.=0. at end of cost_final to avoid overwrite in
768      reverse checkpointing loop
769    o Yet more changes in gmredi:
770      * adgmredi_calc_tensor
771        avoiding all recomputation of gmredi_slope_limit
772      * adgmredi_x/y/rtransport
773        added flag for excessive storing to avoid recomp. of
774        u/v/rtans, dTdx/y/z
775        -> this is not really necessary and very memory-consuming
776      * adgmredi_slope_psi:
777        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
778      * gmredi_slope_limit
779        re-activated full calculation of taperfct for case 'ac02'
780    o updating verification/ adjoints of carbon, global_ocean.90x40x15
781    
782    checkpoint47i_post
783    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
784    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
785      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
786    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
787    o gmredi: fix few bugs.
788    
789    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
790    This will be a good checkpoint to plug into the ecco-branch.
791    o few modif.'s to get latest version adjointed
792      (mainly kick out code in ini_linear_phisurf)
793    o modif's to run adjoint with exactConserv
794    o case GM_BOLUS_ADVEC should be cleaned
795      S/R gmredi_slope_psi should be cleaned
796    o verification/carbon now has exactConserv=.TRUE.
797    
798    checkpoint47g_post
799    o time-average AIM output: becomes independent from statvars time-average
800      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
801    o After TAF bug fix:
802      Tested adjoint of gmredi package.
803      Tests were done with checkpoint47 rather than with latest
804      checkpoint47f_post since the latter is broken for the adjoint
805      verification/carbon/ contains both ADM and TLM gradient checks.
806    Here they are, before they get changed/lost/stolen.
807    Mostly modif.'s to fix numerical sensitivities.
808    Gradient checks OK for
809    - GM_taper_scheme:
810      * clipping
811      * ac02
812      * linear
813      * glw91
814      * dm95
815      * ldd97
816    - GMREDI_OPTIONS:
817      * GM_VISBECK_VARIABLE_K
818      * GM_NON_UNITY_DIAGONAL
819      * GM_EXTRA_DIAGONAL
820      * GM_BOLUS_ADVEC
821    in conjunction with data.gmredi parameters to be checked in
822    in a few minutes under verification/carbon/code/
823    
824    checkpoint47f_post
825    Merging from release1_p10:
826    o modifications for using pkg/exf with pkg/seaice
827      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
828        and SEAICE_EXTERNAL_FLUXES
829      - pkg/exf CPP options EXF_READ_EVAP and
830        EXF_NO_BULK_COMPUTATIONS
831      - usage examples are Experiments 8 and 9 in
832        verification/lab_sea/README
833      - verification/lab_sea default experiment now uses
834        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
835    
836    checkpoint47e_post
837    o created a tag prior to creating a branch
838    
839    checkpoint47d_post
840    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
841      at the bottom boundary had an erroneous half slip boundary condition
842    o added bottom drag and no slip boundary condition capabilities to
843      oceanic pressure coordinates code
844    o added new verification experiment global_ocean_pressure, this experiment is
845      also described in the tutorial section of the manual
846    checkpoint47d_pre
847    
848    checkpoint47c_post
849    o Added a verification experiment for a global cubed-sphere ocean run
850      -  verification/global_ocean.cubed32x32x30
851      -  uses pkg/therm_seaice and pkg/bulk_forcing
852    
853    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
854    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
855      when using P-coordinate; only implemented for atmospheric config.
856    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
857      NOTES: requires option NONLIN_FRSURF to be "#define".
858    o update advect_xz/results/output.txt (left from checkpoint44g_post)
859    
860    checkpoint47b_post
861    Merging from release1_p9:
862    o pkg/seaice
863      - removed GOTO's and added taf directives
864      - double precision constants to reduce the g77 (Linux)
865        to F77 (SGI) differences reported in release1_p8
866    o tools/genmake
867      - added SGI options
868    o verification/testscript
869      - updated to that of checkpoint47a_post
870    o verification/global_ocean.90x40x15/input/eedata
871      - modified for SGI f77 compatibility
872    o verification/lab_sea
873      - added description of sea-ice model
874      - added missing matlab routines
875      - added test of thermodynamics parallelization
876    
877    checkpoint47a_post
878    o new pkg: aim_v23
879     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
880       for now, keep the same surface forcing as before.
881     - Part-Cell implemented into AIM; check that Heat & Water are conserved
882     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
883     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
884    o add diagnostic of surface correction term in monitor output
885    
886    o bulk_force and therm_seaice
887    - Two packages:  bulk_force (Bulk forcing)
888      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
889    - Earlier integration from Stephaine Dutkiewicz
890      and Patrick Heimbach.
891    - Two ifdef statements for compile time,
892       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
893    
894    checkpoint47
895    differentiable version of checkpoint46n_post
896    o bug fix in quasihydrostaticterms
897    o * "clean" adjoint code (in terms of extensive recomputations)
898        can now be obtained for all GMREDI options (i.e. for
899        - GM_VISBECK_VARIABLE_K
900        - GM_NON_UNITY_DIAGONAL
901        - GM_EXTRA_DIAGONAL
902        - GM_BOLUS_ADVEC )
903      * However, wrong gradient check problem remains unsolved.
904      * New CPP options have been introduced for different
905        tapering schemes
906    o external_fields_load now part of differentiation list
907    o pressure needs multiple storing;
908      would be nice to have store_pressure at beginning or
909      end of forward_step, e.g. by having phiHyd global (5-dim.)
910      (NB: pressure is needed for certain cases in find_rho,
911      which is also invoked through convective_adjustment).
912    o recomputations in find_rho for cases
913     'JMD95'/'UNESCO' or 'MDJWF' are OK.
914    o #define ATMOSPHERIC_LOADING should be differentiable
915    o ini_forcing shifted to begining of initialise_varia
916    o Incorporating QNVS line search routines into MITgcm
917      (this is separate code, and therefore not under pkg)
918      lsopt/, optim/
919    o Updated verification/carbon/
920      - #define GM_VISBECK_VARIABLE_K
921      - GM_taper_scheme    = 'ldd97'    
922    
923    checkpoint46n_post
924    Merging from release1_p8:
925    o verification/natl_box:
926      updating new external_fields_load routine
927    o New package: pkg/seaice
928      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
929      The sea-ice code is based on Hibler (1979-1980).
930      Two sea-ice dynamic solvers, ADI and LSR, are included.
931      In addition to computing prognostic sea-ice variables and diagnosing
932      the forcing/external data fields that drive the ocean model,
933      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
934      The implied surface heat flux is then stored in variable
935      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
936      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
937      non-local transport term.  Because this call precedes model
938      thermodynamics, temperature under sea-ice may not be "exactly" at
939      the freezing point by the time theta is dumped or time-averaged.
940      N.B.: fairly large differences in accuracy occur across
941            different platforms/compilers; comparison between
942            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
943            generated output gives:
944       T           S           U           V
945      C D M    c        m  s        m  s        m  s        m  s
946      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
947      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
948      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
949    
950      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
951    o GAD:
952      - generated new common blocks to account for call of
953        same gad routines with differing traceridentities
954        (needed to modify tracerIdentity indices in GAD.h)
955      - generated separate common blocks for case useCubedSphereExchange
956        (Department of Futurology)
957      - parameter lists to gmredi_?transport: added tracerIdentity
958      - added new key indices to tamc.h
959    o external_fields_load:
960      - added this routine to TAF list
961      - needed to make some common blocks global and additional storing
962        along the same lines as exf package (checkpoint_lev?_directives.h)
963    o exf:
964      updated external forcing package
965      - bug fixes carried over from ecco-branch
966        (missing OBCS_OPTIONS.h in two routines)
967      - enable easy to use "no forcing".
968      - added exf I/O for atmospheric loading
969      - added exf I/O for runoff data
970      - transfered scaling between exf <-> MITgcm to exf namelist
971    o Adding new verification experiment global_with_exf.
972      This verification experiment is almost identical to the
973      global_ocean.90x40x15 experiment, except that it uses
974      the exf (and cal) package instead of the
975      external_fields_load routine (cf README file).
976    
977    checkpoint46m_post
978    o modified testscript to return -- when there are no lines of "%MON" output
979    o added new flag "quasiHydrostatic" for QH mode
980      and new routine quasihydrostaticterms()
981    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
982      New routine: mom_u_coriolis_nh()
983    o fixed sign of non-hydrostatic metric terms in u and v equations.
984      Depend on correct sign of gravitySign.
985    o added work.pc* to .cvsignore in aim directories using ifc
986    o introduced flag for controllin non-hydrostatic metric terms
987    o removed gravitySign from PARM04
988    o switched to g77/ifc from pgf77 in aim experiments
989    
990    checkpoint46l_post
991    o made convective adjustment work with pressure coordinates:
992     - changed the direction of k-loop in convective_adjustment.F for the
993       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
994     - adjusted the reference pressure k-index in convective_adjustment.F
995     - adjusted the convection condition in convect.F (in analogy to
996       calc_ivdc.F)
997     - convective_adjustment no longer computes anything on the halos
998     - removed the warnings about negative salinity from find_rho.F and
999       find_alpha.F; instead the new routine look_for_neg_salinity, called
1000       at the beginning of find_rho, find_alpha, and find_beta, does a
1001       check of the entire slice, if CPP-option
1002       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1003    checkpoint46l_pre
1004    
1005    checkpoint46k_post
1006    o fixed the verification/global_ocean.90x40x15 experiment:
1007     - new bathymetry (the world according to A., JMC, and M.)
1008     - new initial fields and forcing fields (*.bin files)
1009     - new POLY3.COEFFS (for the next release one should switch to a full
1010       equation of state: JMD95P or MDJWF)
1011     - fixed several errors and redundancies in the data file
1012     - experiment uses looped cells
1013     - added matlab directory with diagnostic scripts for plotting of output
1014    
1015    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1016     - read AIM physics parameters from a file (data.aimphys)
1017     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1018    
1019    checkpoint46j_post
1020    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1021    o move wVel computation at the end of the time step, in S/R integr_continuity
1022    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1023    o update timeave pkg for wVel diagnostic.
1024    checkpoint46j_pre
1025    
1026    checkpoint46i_post
1027    o Clean up AIM package (and keep the results unchanged):
1028      include CPP_OPTION and use IMPLICT NONE in all routines ;
1029      declare all the variables _RL ; use _d 0 for all numerical constants.
1030      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1031    
1032    checkpoint46h_post
1033    o cleaned up the use of rhoNil and rhoConst.
1034      - rhoNil should only appear in the LINEAR equation of state, everywhere
1035        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1036        and the dynamical equations are all divided by rhoConst
1037    o introduced new parameter rhoConstFresh, a reference density of fresh
1038      water, to remove the fresh water flux's dependence on rhoNil. The default
1039      value is 999.8 kg/m^3
1040    o cleanup up external_forcing.F and external_forcing_surf.F
1041      - can now be used by both OCEANIC and OCEANICP
1042    checkpoint46h_pre
1043    
1044     Added code to convert surface volume flux (fresh water) into
1045     a mass flux when using P coordinates in the ocean (OCEANICP).
1046     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1047    
1048    checkpoint46g_post
1049    o Include a new diagnostic variable phiHydLow for the ocean model
1050      - in z-coordinates, it is the bottom pressure anomaly
1051      - in p-coordinates, it is the sea surface elevation
1052      - in both cases, these variable have global drift, reflecting the mass
1053        drift in z-coordinates and the volume drift in p-coordinates
1054      - included time averaging for phiHydLow, be aware of the drift!
1055    o depth-dependent computation of Bo_surf for pressure coordinates
1056      in the ocean (buoyancyRelation='OCEANICP')
1057      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1058        Theta, Salinity, and Pressure in the parameter list. This routine is
1059        presently contained in find_rho.F. This routine does not give the
1060        correct density for 'POLY3', which would be a z-dependent reference
1061        density.
1062    o cleaned up find_rho
1063      - removed obsolete 'eqn' from the parameter list.
1064    o added two new verification experiments: gop and goz
1065      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1066    checkpoint46g_pre
1067    
1068    checkpoint46f_post
1069    o Enable tangent linear (forward mode) gradient checks:
1070      - extended active file handling to g_... files
1071      - added TANGENT_SIMULATION to theSimulationMode
1072      - extended grdchk package accordingly
1073    o added tangent linear setup in verification/carbon/code_ftl
1074    o added adjoint setup in verification/front_relax/code_ad
1075    
1076    checkpoint46e_post
1077    o Added new equation of state -> MDJWF
1078      - EOS of McDougall et al., 2002, JAOT, submitted
1079      - caveat: the equation of state is only valid for a smaller (more
1080        realistic?) range of values than JMD95P/Z and UNESCO
1081      - added masks to the calculation of pressure in store_pressure
1082      - added more check values for density in check_eos (ini_eos.F), some of
1083        the old check values are out of the range of the MDJWF-eos, so don't
1084        expect perfect matches for those
1085    checkpoint46e_pre
1086    
1087    checkpoint46d_post
1088    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1089      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1090      case of pressure coordinates. eosType='JMD95Z' in
1091      combination with buoyancyRelation='OCEANICP' now causes an error.
1092    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1093      in find_alpha/beta.
1094    checkpoint46d_pre
1095    
1096    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1097      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1098    
1099    checkpoint46c_post
1100    o Changes necessary for ocean in p-coordinates
1101     -  Added new buoyancy relation = 'OCEANICP'
1102     -  Added new parameters = gravitySign (this used to be contained inside
1103        the factor dRdZ which I added when we first switched to R coordinates).
1104     X GM/Redi is not compatible (yet)
1105     X bottom drag and no-slip need to be debugged.
1106    checkpoint46c_pre
1107    
1108    checkpoint46b_post
1109    o Added new equation of state -> JMD95Z and JMD95P
1110      - EOS of Jackett and McDougall, 1995, JAOT
1111      - moved all EOS parameters into EOS.h
1112      - new routines ini_eos.F, store_pressure.F
1113    o Added UNESCO EOS, but not recommended because it requires
1114      in-situ temperature (see JMD95)
1115    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1116      unesco.f to be used with POLY3
1117    checkpoint46b_pre
1118    
1119    checkpoint46a_post
1120    o Added (atmospheric) pressure loading
1121      - new field in FFIELDS.h, etc...
1122      - new cpp flag ATMOSPHERIC_LOADING
1123    o Changed hFacC to _hFacC in calc_phi_hyd.F
1124    o Added SHORTWAVE_HEATING to some files for consistency
1125    checkpoint46a_pre
1126    
1127    checkpoint46
1128    further merges from release1_p5
1129    o new ctrl package
1130      - adopted from ECCO environment to enable optimization
1131      - added Eliassen Palm fluxes to controls
1132    o added Eliassen Palm flux controls to gradient check package
1133    o cost package
1134      - Compatible with new ctrl package
1135      - added Eliassen Palm cost hooks
1136      - modif's of existing cost functions
1137    o Adjoint-related bug fixes in kpp:
1138      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1139      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1140    o autodiff package
1141      - flow directives:
1142        + new for S/R do_the_model_io
1143        + enhanced for S/R checkpoint
1144        + new gmredi.flow
1145      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1146        disable adcommon.h/g_common.h by default.
1147      - fixed problem for adjoint of global_max
1148    o modified verification/carbon/
1149    o New setup for adjoint of global_ocean
1150    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1151    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1152    o incorporated hooks for sponge layer code (external_forcing.F)
1153    
1154    checkpoint45d_post
1155    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1156    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1157      (affects plume_on_slope "cg2d" output)
1158    o add new parameter deltaTfreesurf for free-surface time stepping
1159    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1160    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1161    o change phiMin in exp1 (to agree with documentation)
1162    o add new flags:
1163     - T,S forcing inside/outside Adams-Bashforth
1164     - turn off temp,salt advection and/or forcing
1165     - for each tracer, define internal flag for multiDimAdvection & A-B
1166    o monitor: change definition of KE to check conservation of Energy
1167    
1168    checkpoint45c_post
1169    o Removed f90 comments ("!")
1170    o Modified initialisations to enable exf package for MITgcm
1171      (without invoking ECCO_PACKAGE).
1172    o modifications to gradient check package (Martin Losch)
1173      - enable centered differences
1174      - modified format of standard output
1175    
1176    checkpoint45b_post
1177    o cleaned exchange calls in cg2d
1178    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1179    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1180      to configure barotropic setup (Martin Losch)
1181    o moved some initialisations within bi,bj loop in dynamics
1182      (TAF flow dependency)
1183    o in initialise_varia, moved call packages_init_variables
1184      before convective_adjustment_init
1185      (corresponding adjustment of TAF tape initialisation).
1186    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1187    
1188    checkpoint45a_post
1189    o compute Rho over the whole domain (extend iMin,jMin indices)
1190    o specific exchange for X-slice domain (case Ny=1)
1191    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1192    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1193    
1194    checkpoint44h_post = checkpoint45
1195    o Fix to restore differentiability:
1196      place at which packages_init_variables is called in
1197      initialise_varia is crucial for reverse control flow.
1198    o modifications in GMRedi to enable stable adjoint
1199      (corresponding modif's in thermodynamics, dynamics)
1200    o added missing hook for sponge layer code in external_forcing
1201    o modified test cost functions
1202    o storing in gad_advection (plus removal of write(0,*)!
1203    o missing headers TR1.h added in convective_adjustment routines
1204    o errorMessageUnit set non-equal zero in eeboot
1205      (conflict on some platforms, e.g. IBM SP3)
1206    o modified carbon verif.
1207    
1208    checkpoint44h_pre
1209    o vertical grid option: allow to put the Interface at the middle between
1210      2 cell-centers ; replace delZ in pkg/kpp by drF.
1211    o GM Advective form: Tracers are advected using the residual transport (=
1212      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1213    
1214    checkpoint44g_post
1215    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1216      results) ; ifdef missing in thermodynamics.F
1217    
1218    checkpoint44f_pre,checkpoint44f_post
1219    o added PTRACERS package
1220      This allows an arbitrary number of passive tracers to be integrated
1221      forward simultaneously with the dynamicaly model.
1222      + Implemented so far:
1223        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1224        - I/O and checkpointing
1225        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1226      + Not implemented so far:
1227        - KPP
1228        - OBCS
1229      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1230        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1231        line in data.pkg.
1232      + This package is disabled by default since it increases storage.
1233    
1234    
1235    o testscript: added -cleanup option
1236    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1237                 b) enable to filter 2D fields.
1238    
1239    checkpoint44e_pre,post
1240    o re-wrote convective adjustment to use pre-calculated weights
1241      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1242      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1243      Original calls to convect() still in place.
1244    
1245    chkpt44d_pre,post
1246    o added missing EXCLUDE_MONITOR flags
1247    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1248      (incompatible typ in MIN/MAX expressions caused problems
1249      on IBM SP3)
1250    o in genmake added variable MAKEDEPEND
1251      plus resetting for case SunOS
1252    o added timer_stats.c routine for IBM SP3
1253    o removed variables in dynamics
1254    !!! I forgot to create tag chkpt44d_pre !!!
1255    !!! But chkpt44d_pre = chkpt44c_post    !!!
1256    
1257    o real fresh water flux implemented with non-linear free-surface.
1258    
1259    chkpt44c_pre,post
1260    o few fix (mask in shap_s2, EmPmR in external_field_load,
1261      USE_NATURAL_BCS in solve_for_P);
1262    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1263    
1264    checkpoint44b_pre/_post
1265    o merge of relevant stuff from the ecco-branch:
1266      - genmake: removed $S64 overwrite for case SunOS
1267      - pkg/exf: update and corrections for field swapping and obcs
1268      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1269                  harmonized between ECCO and MITgcm
1270      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1271                      updated checkpointing_lev... lists for obcs
1272      - model/src: minor changes in forward_step, plot_field
1273                   added directive for divided adjoint in the_main_loop
1274      - pkg/mdsio: added mdsio_gl_slice
1275    
1276    o check parameters & config (chkpt44a_pre,post)
1277    o OBC and NonLin_FrSurf.
1278    
1279    checkpoint44
1280    o fix bug in mom_vi_del2uv
1281    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1282    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1283    o update AIM experiments (NCEP input files)
1284    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1285    o added some stuff for AD
1286    
1287    checkpoint43
1288    o added two new advection tests
1289    o added global 4x4 degree ocean test
1290    o added test of H&S94 with free surface on cube
1291    o some final mods for gradient check, adjoint,...
1292    
1293    checkpoint42
1294      Fixed AD-related problems:
1295    o Store directives up-to-date with re-arranged Adams-Bashforth
1296      (mainly thermodynamics.F)
1297    o New store directives for multi-dim. advection schemes
1298      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1299      * new common block and key passkey
1300      (mainly gad_advection.F)
1301    o Modified store directives for split of dynamics/thermodynamics
1302      for the case ALLOW_KPP
1303    o Cleaned argument list for timestep_tracer.F
1304    
1305    checkpoint41
1306    o re-formatted/added comments in prologues of key subroutines
1307      to work with protex
1308    
1309    checkpoint40
1310    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1311    o added FLT (floats) package from Arne along with demo. experiment
1312    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1313      implementation of forward-in-time forcing terms
1314    o more mods for non-linear free-surface including new variable
1315    o modified multi-dim method to work on cube
1316    o bug fix in KPP (from DM)
1317    
1318    checkpoint40pre9
1319    o added DST advection schemes
1320    o fix MPI bug on SGI's
1321    o modifications for non-linear free-surface
1322    o fixed conditionals for fixed flow/passive tracer only mode
1323    o added tension/strain form of stress tensor
1324    o changes to commenting of arguments for TAF/TAMC
1325    o added/updated many matlab scripts
1326    o added multi-dimensional advection method for tracers
1327      
1328    checkpoint40pre8
1329    o new package rw/
1330      Added method for dumping intermediate local arrays:
1331      mdsio_writetile - same as mdsio_writefield except works from inside
1332                        bi,bj loop
1333      mdsio_writelocal - same as mdsio_writetile except works for local
1334                         arrays
1335      write_local_r? - higher-level wrapper for mdsio_writelocal
1336      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1337      Example given at end of mom_vecinv.F that dumps some local arrays.
1338    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1339      control flux-form versus vector invariant code.
1340      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1341      or genmake -DISABLE ...
1342    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1343      (additional storing is now needed for case vecinv;
1344      currently nothing implemented to switch this storing off
1345      in case fluxform is used since no CPP flag available).
1346    
1347    checkpoint40pre7
1348    o bug fix in dynamics.F
1349      calc_viscosity called before k=1,Nr loop.
1350    o added some #ifdef's ALLOW_PASSIVE_TRACER
1351    o cleaned initialisations in ctrl_map_ini
1352      related to TAF
1353    
1354    checkpoint40pre6
1355    o split dynamics into thermodynamics & dynamics
1356    o corresponding split of calc_diffusivity into
1357      calc_diffusivity, calc_viscosity
1358      (kpp_calc_diff, kpp_calc_visc).
1359    o Added diffkr, kapgm to control variables
1360    o bug fix in gmredi_slope_limit for ldd97
1361    
1362    checkpoint40pre5
1363    o proper initialization of Adams-Bashforth time stepping
1364      + uses forward step for very first step of model (iter=0)
1365    o re-generated *all* output since almost all output is modified by this
1366      change (sorry but we've been putting this one off for about 2 years)
1367      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1368        *not* regenerated since they are already out of date and I don't
1369        want to create the impression that they are suddenly working.
1370    o removed KAP stuff for DEC's
1371    o modified/added many .cvsignore files in */code and */input
1372    o added new expt "solid-body.cs-32x32x1"
1373      + this uses an alternative form of ini_curvilinear_grid.F which
1374        is not necessarily any better than the current one...
1375    
1376    checkpoint40pre4
1377    o added re-initialisations of utrans,vtrans,rtrans in
1378      calc_common_factors which are crucial for TAF.
1379    o extended iMin,jMin range for calc_common_factors,
1380      calc_diffusivity
1381    o added option ALLOW_PASSIVE_TRACER
1382    o a few minor updates and fixes
1383    
1384    checkpoint40pre3
1385    o created calc_gtr1.F for gad package
1386    o split the_main_loop and re-introduced forward_step
1387    o some recomputations of nIter0 for TAMC
1388    
1389    checkpoint40pre2
1390    o Updated to latest branch of AJA, JMC
1391    o Added gradient check package
1392    o Added routines for passive tracer handling
1393    o Added carbon sequestration sensitivity experiment
1394    
1395    checkpoint39
1396     o Modifications and fixes to support TAMC
1397       (mainly missing or wrong directives)
1398     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1399       in addummy_in_stepping
1400     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1401     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1402     o Included following packages:
1403       cal: calendar
1404       exf: external forcing
1405       ecco: essential routines to control use of cal, exf
1406             (NB: this is not the full ECCO environment)
1407     o disabled some packages by default in genmake
1408    
1409    checkpoint38
1410     o see notes_c37_adj.txt
1411     o corrected wrong layer index in external_forcing_t
1412     o replaced the_main_loop/forward_step by the_main_loop
1413     o removed forceoutput from write_state
1414       (replaced criteria for initial/final state)
1415     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1416    
1417    checkpoint37
1418     o mdsio.F routine split and packaged in pkg/mdsio
1419       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1420        used unless genmake -disable=mdsio)
1421     o allow a more precise surface-geopotential gradient for the atmosphere
1422       taking into account the change in space of Alpha (=1/rho) at the surface.
1423     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1424       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1425     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1426       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1427       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1428     o Time-Average diagnostics defined as a pseudo package "timeave".
1429     o pickup files : old pickup (before c35) did not work with new code (c35
1430       and after) unless activating 2 commented lines in initialise-varia.
1431     o Non-Hydrostatic pickup file Pb fixed.
1432     o bug with Rigid-lid version (since c35) fixed.  
1433    
1434    checkpoint36
1435     o implement Crank-Nickelson barotropic time-stepping
1436     o recover Time-Average diagnostics
1437     o fix Pb in checkpoint (PR#19)
1438     o AIM become a standard package ; clean unused CPP_kees
1439    
1440    checkpoint35
1441     o subtantial rewrite of dynamics.f
1442     o allows staggered time-stepping
1443     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1444     o added bottom drag (linear + quadratic)
1445    
1446    checkpoint34
1447     o Modified exchange routines for correct reverse simulation.
1448     o Added verification output to comply with bug fix in impldiff.F
1449       as of c33 (exp2, natl_box).
1450     o Corrected store directives in dynamics.F
1451     o Corrected array boundaries in impldiff.F
1452     o Corrected array dimensions in gmredi.
1453       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1454     o Added routine GLOBAL_SUM_INT to global_sum.F
1455     o Added mdsio_gl.F for ECCO purposes.
1456    
1457    checkpoint33
1458     o Fixed bug in lower BC in impldiff.F
1459     o Fixed confusion about units of forcing arrays in FFIELDS.h
1460       namely Fu,Fv,Qnet,Qsw,EmPmR:
1461       - Removed verification/natl_box/code/external_fields_scale.F
1462         (did not differ from that in model/src)
1463       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1464         (see FFIELDS.h for description)
1465       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1466         kpp_calc.F and kpp_transport_t.F
1467       - Removed model/src/external_fields_scale.F and calls to it
1468       - verification/natl_box uses flux data with "atmospheric" sign so
1469         a special version of external_fields_load.F is used to
1470         change the data as it's read in. This way, the arrays
1471         have the right units and signs at all times tha a user could
1472         possibly use them.
1473     o Corrected genmake to delete a temporary file during configuration
1474    
1475    checkpoint32
1476     o Scaling of forcing fields moved from external_forcing.F to
1477       external_fields_scale.F, called directly after loading fields.
1478     o Surface relaxation terms added to surface tendency fields in
1479       extra subroutine.
1480     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1481       fields.
1482     o Changes in GMRedi to comply with packaging structure.
1483     o Modifications and bug fixes in KPP package.
1484     o Verification experiment for KPP added (verification/nat_box/)
1485    
1486    checkpoint31
1487     o Packages interface brought in line with defined standard
1488       -> new routines packages_...F
1489       -> changes in initialise_fixed.F, initialise_varia.F
1490       -> enables initialisation interface for ECCO package
1491     o Rescaling of external forcing fields immediately after read
1492       (removed from external_forcing.F)
1493       -> new: surface_fields_scale.F
1494       -> affects ini_foorcing.F, external_fields_load.F
1495     o Computation of surface tendencies before tendency updates.
1496       -> new: external_forcing_surf.F
1497     o Change of variable names useGMRedi, useKPP, useECCO
1498     o Further changes in dynamics.F, impldiff.F for TAMC
1499     o Tested for experiments 0, 2, 4.
1500       - not yet tested for GMRedi.
1501       - not yet tested for KPP.
1502    
1503    checkpoint30
1504     o Updates for OBCs
1505     o New experiment for test OBCs (internal_wave)
1506     o New output.txt in verification/exp4/results/
1507     o Updates for KPP: calculation of viscosity corrected, new variables
1508       kpp_dumpFreq and kpp_taveFreq
1509     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1510       and entry for T90 in genmake
1511    
1512    checkpoint29
1513     o packaged KPP and GM/Redi
1514    
1515    checkpoint28
1516     o Corrected initialization of hFacMin for difference vertical coordinates
1517     o Modified calculation of partial cell thickness to more robust algorithm
1518     o config_summary.F: replaced write_1D_... by write_0D_...
1519       read_write.F: added subroutines write_0D_...
1520     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1521       included some initialisations required for TAMC.
1522     o routine calc_isoslopes: modified sqrt computation to make it
1523       differentiable for zero argument.
1524     o routines dynamics, impldiff:
1525       included store directives and tape key computations required for TAMC.
1526     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1527    
1528    checkpoint27
1529     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1530       formulation works properly with variable resolution.
1531     o restructured the calling tree between the_model_main() and dynamics()
1532     o split initialise() into initialise_fixed() and initialise_varia()
1533     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1534       in new routine ini_psurf()
1535    
1536    checkpoint26
1537     o moved some #ifdef in optional routines to encompass everything
1538       except the argument declarations. This was using up some memory.
1539     o fixed macros like _ADT to work with both versions of Linux cpp
1540     o cleaned up some unused and uninitialized variables
1541       (helps when debugging with strict compile options)
1542     o split up CPP_EEOPTIONS.h into options and macros
1543       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1544     o patch for 2 processor JAM mode
1545    
1546    checkpoint25
1547     o updates for OBCs and NH
1548     o dramatically reduced memory usage
1549     o added "JAM" routines for use on Artic network
1550     o parameterization of convection by implicit vertical diffusion
1551     o added a diagnostic of convective index
1552     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1553       (this is was partly for OBCs and NH but also in anticipation of
1554        an explicit free-surface option)
1555     o initial state input files for U and V
1556    
1557    checkpoint24
1558     o Removed some spurious "REAL"s
1559     o Updated KPP to latest version from JPL
1560     o Added a COS(latitude) in horizontal viscosity
1561    
1562    checkpoint23
1563     o Added del^4 diffusion for salt and temperature
1564     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1565    
1566    checkpoint22
1567     o Made many small changes: implicit none, format(i5), etc...
1568     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1569    
1570    checkpoint21
1571     o Introduced new I/O package that supports direct-access records (mdsio.F)
1572     o Split-up mid-level I/O routines
1573     o Updated input data for experiments 0,1,2,4 and 5
1574     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1575    
1576    checkpoint20
1577     o Tidied up open-boundaries some more
1578     o Added non-hydrostatic code
1579     o Fixed some input data
1580     o Modified MPI start-up to work in "coupled" context.
1581    
1582    checkpoint19
1583     o Tidied up directory structure for verification experiments.
1584     o Added new code for open boundaries.
1585     o Corrected advective terms near boundaries.
1586     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1587     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1588     o Split default parameters out of ini_parms.F into set_defaults.F.
1589    
1590    checkpoint18
1591     o Further changes for optional code generation with
1592       CPP - ugh!
1593    
1594    checkpoint17
1595     o Beginning to incorporating modularity
1596       for supporting atmos. and ocean configs.
1597     o Small changes for TAMC complinace
1598     o New ultra simple test case. Barotropic box
1599       configuration "exp0".
1600    
1601    checkpoint16
1602     o Minor changes to exchange routines to support
1603       accumulation in reverse mode. Adjoint of an
1604       assignment is an addition.
1605     o Changes to support compilation by TAMC (LR(1)
1606       syntax) and by g77 under Linux ( 72 character
1607       limit ).
1608    
1609    checkpoint15
1610     Rewrote exchange routines to allow
1611     o General tile <-> tile connectivity.
1612     o TAMC reverse mode flag ( is this really needed? )
1613     o Variable width overlap and exchange region widths.
1614     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1615       shmput/shmget, VIA, SYSV shmem and every other cool
1616       communication method.
1617    
1618    checkpoint14
1619     Consistent isomorphism chages made. These allow dynamical core
1620     to support both pressure and meters as a vertical coordinate.
1621    
1622    checkpoint13
1623     Release which corrects global_max problem and a couple
1624     of KGM time-averaging diagnostic errors. Also contains
1625     a double-gyre experiment setup as well as the baseline
1626     4 degree global template. The double gyre template is
1627     organised to allow it to be applied automatically to
1628     the baseline configuration.
1629    
1630    branch-point-rdot
1631     A few tidy-ups have been made bt the real point of this
1632     check-point (excuse the pun) is to allow a branch to be
1633     made for the purposes of adding the rDot alterations.
1634     I don't want to commit the rDot to the main-trunk until
1635     we've actually tested it...
1636    
1637    checkpoint12
1638     Tidy up and added generic genmake script (formerly
1639     configure script).
1640     Released to testers.
1641    
1642    checkpoint11
1643     Re-arranged initialise() and introduced ini_vertical_grid()
1644     and ini_masks_etc().
1645    
1646    checkpoint10
1647     Introduced the configure script.
1648     Separated out the diags package.
1649     Added template for writing time-averages of tile/intermediate quantities.
1650     Updated SIZE.h in exp2 and made the data big-endian.
1651    
1652    checkpoint9
1653     MPI fix. Filename changes (meta/data). salbin*y stuff.
1654     General tidy-up.
1655     SST.bin SSS.bin added to verification/exp2
1656    
1657  checkpoint8  checkpoint8
1658   Inludes time-dependant forcing and time-averaging.   Inludes time-dependant forcing and time-averaging.
1659   Works at 4x4 and 2.8125x2.8125 global   Works at 4x4 and 2.8125x2.8125 global

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