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revision 1.9 by adcroft, Thu Jul 2 14:20:04 1998 UTC revision 1.282 by mlosch, Tue Apr 20 19:16:48 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 bug fix in exf-package:
7      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
8         now reflect that.
9    o small fixes in the cal-package:
10      - set reference date to first of January for the 'model'-calendar
11      - failing of cal_CheckDate in cal_FullDate now actually results in a
12        warning
13    o small modifications in exf-package to increase flexibility:
14      - change climtempfreeze from a constant to a runtime parameter that
15        is specified in data.exf_clim (default = -1.9)
16      - introduce runtime parameter windstressmax (default = 2.0) that is
17        specified in data.exf
18    o fix in pkg/thsice:
19      - update Evap (Tsf changes) to be consistent with Latent heat flux
20      - maintain snow precipitation unchanged (even if Tsf >=0).
21     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
22    
23    checkpoint52m_post
24    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
25      this does not change any of the results, because myIter=0 in swfrac always
26      lead to jwtype=2 (the default anyway), but the call makes little sense
27      as a default
28    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
29    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
30      atmospheric model (AIM) to use it ; add a "slab ocean" component.
31    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
32    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
33    o extending useSingleCpuIO option to work with new exch2 I/O format
34      - old-style, missing-tile I/O is still accessible by defining CPP
35        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
36    o monitor package can write to NetCDF files and/or STDOUT
37    o fix re-definition bug in MNC_GRID_INIT_ALL()
38    o doc/api_reference added
39      - a framework for building an API Reference Manual using all
40        the "protex" comments embedded in the code
41      - see pkg/generic_advdiff, pkg/mnc for examples
42    o MNC:
43      - make myThid the last argument for all subroutines
44      - new default for the grid files: NO halos
45      - add useMNC and other run-time flags
46      - separate per-file-group handling of the unlimited dimension
47      - early initialization of MNC w/ flags read at the eeboot stage
48        and lookup tables set in initialize_fixed
49      - write all MNC output to a freshly-created directory
50    o thermodynamics sea-ice (thsice) is now tested with testreport.
51    o test exp. advect_cs: use the standard cs32 grid ; update output.
52    o Added functionality to grdchk:
53      pick global i,j,k position (or nearest wet) where to perform check.
54    
55    checkpoint52l_post
56    o new land formulation:
57      a) use ground enthalpy as prognostic variable to ensure exact
58         energy conservation.
59      b) account for water temperature and for latent heat of freezing
60         in all processes (rain, run-off, ground storage)
61      c) compute surface and ground temperature implicitly.
62    o aim_v23 modification for new land model:
63      a) Treat separately land / ocean / sea-ice surface fluxes
64         to allow implicit computation of land & sea-ice surface temp.
65      b) add snow precipitation.
66    checkpoint52l_pre
67    
68    o fix problem (when 1 tile is empty) in min/max monitor.
69    o fix bug in timeAve (u,vZetatave in common block)
70    o no restoring terms under ice for pkg/seaice
71    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
72    o bug fix for pkg/seaice pickups
73    o change MNC call locations and add coordinate attributes
74    o mask vorticity at the corner ; affects global_ocean.cs output
75    o fix ini_curvilinear_grid ; test CS experiments with mpi
76    o aim.5l_cs: modify sea-ice fraction input file ; update output
77    o exf: Adding simple range check routine for exf fields after read
78    
79    checkpoint52k_post
80    o removed top-level directory "diags"
81      - we migrated these functions to pkg/timeave a long time ago
82    o fixed bug introduced in pkg/monitor
83    o accuracy ctrlprec = 32 insuffient for gradient checks using
84      averaged fields (I/O via cost_averages)
85      -> use ctrl.h in active_file*.F to control I/O precision.
86    o paramter list of CALL ADTHE_MAIN_LOOP
87    o added initial do_the_model_io to ecco
88    o set all ...Freq to zero after cost_final
89      taveFreq, dumpFreq, pChkptFreq
90    o MAIN and ECCO differentiability restored
91    
92    checkpoint52j_post
93    o fix nchklev in tamc.h for global_ocean...
94    o Bringing flow and store directives up-to-date
95    o Really weird thing!
96      call do_the_model_io from the_main_loop with parameters
97      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
98      TAF places a faulty re-call of initialise_varia
99      after cost_final call which should not be there!
100    checkpoint52j_pre
101    
102    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
103      error messages
104    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
105    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
106      debug output
107    o modfied mdsio_writefield.F to handle non-global files under exch2
108    o update AIM Cubed-Sphere exp (aim.5l_cs):
109      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
110    o update AIM Equatorial Channel exp:
111      use standard aim_v23 pkg and change the SST fields to be more realistic.
112    o globalFile now works with exch2
113    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
114      mon_vort3.F to make exch2 friendly with >1 tile per cube face
115    o limit timeave output for hi-res integrations
116    
117    checkpoint52i_post
118    o removed CPP_EEOPTIONS.h from verification/*/code
119    o updated the tiling for global_ocean_pressure
120    checkpoint52i_pre
121    
122    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
123      the old pkg/aim).
124    
125    checkpoint52h_pre
126    o shortened offending lines in exch2_send_rx?.template
127    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
128    o genmake2: add build & execute test for NetCDF code
129    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
130      old grid files, moved CPP_EEMACROS.h to pkg/exch2
131    o added useSingleCPUIO flag to monitor.F and mon_out.F
132    o added temporary hack for sea-ice dynamics on the cube:
133      metric terms are ignored and it is assumed that
134      there is no sea-ice on cube faces 1, 2, 4, and 5.
135    
136    checkpoint52f_post
137    o added exch2 cube routines to pkg/exch2
138    o modified hs94.cs-32x32x5 to use it
139    o added new grid files to hs94.cs-32x32x5
140    checkpoint52f_pre
141    
142    checkpoint52e_post
143    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
144      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
145    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
146      to work with implicit vertical advection and AB ;
147    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
148    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
149     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
150    checkpoint52e_pre
151    
152    o fix bug in impldiff when Nr=1 or Nr=2.
153    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
154    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
155    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
156      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
157    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
158    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
159    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
160    
161    checkpoint52d_post
162    o re-tiled many expts to allow comparison in multi-processor mode
163      - updated output accordingly
164      - changed hs94.128x64x5 to use intial T from file rather than use the
165        random number generator
166    o add infrastructure in model routines for fizhi and gridalt packages
167    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
168    o changes to permit hi-res, cubed-sphere, configuration
169      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
170      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
171      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
172        of surface winds for the cube
173      (A verification experiment, based on global_ocean.cs32x15, but with
174       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
175       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
176       complete with example surface forcing files and matlab scripts to look
177       at the output and compare it with that of global_ocean.cs32x15.)
178    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
179       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
180       to conform to the common rule.
181    o check-in the first version of the coupler + interfaces for multi-components
182       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
183       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
184       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
185       - ocean and atmos. share the same horizontal grid (no interpolation).
186       - exchanges between component and coupler is done in forward_step
187    o new verification experiment, cpl_aim+ocn:
188       coupled ocean - AIM atmosphere on cs32 grid.
189    
190    checkpoint52d_pre
191    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
192    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
193    
194    checkpoint52c_post
195    o Fixing OPTIONS files for use of exf:
196      - ALLOW_ECCO not needed
197      - ECCO_CPPOPTIONS.h should not be included from
198        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
199        as has been the case in the past
200      - All cal/exf related options are currently set in
201        single header file. Should remain so until we
202        agree on a consistent new policy.
203    o Removed all CPP options for cal package.
204      cal has no more CPP options.
205    o modified STOREs in GAD_ADVECTION
206    o corrected key comp. for passkey
207    
208    checkpoint52b_post
209    o new version: "thsice" of thermodynamic sea-ice pkg:
210     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
211     - modify fluxes but do not change theta directly;
212     - light cleaning of bulk_force pkg (still needed with thsice).
213     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
214       + output_thsice.txt to test thsice & bulk_force pkgs.
215    o put back grid & coriolis monitor output.
216    checkpoint52b_pre
217    
218    o call "do_the_model_io" at the beginning (=> dump initial state)
219    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
220    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
221      (need info on NUMBER_OF_PTRACERS)
222    o missing PTRACERS headers in some routines
223    o default tamc.h in pkg/autodiff supposed to crash
224      to ensure proper customization
225    
226    checkpoint52a_post
227    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
228      - moved surfaceTendencyTice from pkg/seaice to main code
229      - subroutine FREEZE_SURFACE now limits only surface temperature
230        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
231        => new output.txt for global_ocean.cs32x15 & global_with_exf
232      - keep the old version of FREEZE for backward compatibility;
233        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
234      - corresponding modifs for TAF directives
235    o added surface flux output variables to TIMEAVE_STATVARS
236    o time-averaged output for pkg/ptracers
237    o fix problem with ECCO-related divided adjoint
238      snapshot file was missing some ad-variables,
239      but no warning issued by TAF
240    
241    checkpoint52a_pre
242    o some bug fixes for #undef REAL4_IS_SLOW
243    
244    checkpoint52 = ecco_c52_e35
245    o after testing adjoints of checkpoint51u_post
246    
247    checkpoint51u_post
248    o this is the post-merge tag of the ecco-branch
249      (needs another clean checkout and re-testing)
250    o various natl_box_adjoint configs and results
251      but no input fields
252    o obcs adjoint not yet merged!
253    o adding ECCO global 1x1 and 2x2 degree configs
254    o updated/extended some store directives for seaice
255    o pkg/ecco now containes ecco-specific part of cost function
256    o top level routines the_main_loop, forward_step
257      supersede those in model/src/
258      previous input data.cost now in data.ecco
259      (new namelist ecco_cost_nml)
260    o in ctrl/ cleaned some cross-dependencies and updated CPP options
261    
262    checkpoint51t_post
263    o this is the pre-merge tag of the ecco-branch
264    
265    checkpoint51s_post
266    o cleanup: removed various obsolete #define-s
267    o pkg/grdchk
268      - renamed 'ph-grd 3' to 'grad-res'
269      - merged from ecco-branch
270        (remaining bug fixes for obcs gradient checks)
271      - additional high-precision output for testreport
272        (grep for 'precision_grdchk_result')
273    
274    checkpoint51r_post
275    o cleaned up or removed CPP_OPTIONS.h files
276    o updated results for some of the tests to reflect the new
277      optfiles (-ieee: -O0 instead of -O3)
278    
279    checkpoint51q_post
280    o cd_code:
281      - moved cd_scheme.F -> cd_code_scheme.F
282      - separate read_checkpoint from cd_code_ini_vars.F
283      - separated cd_code part from write_checkpoint
284      - updated AD_SOURCE, generated .flow
285      - added CD_CODE_VARS.h to the_main_loop
286      - Moving cd_code specific store dir.s to pkg/cd_code
287    o ctrl package totally restructured
288      - pack/unpack now optional and decoupled from
289        xx_/adxx_ I/O
290      - ctrl_pack/unpack cleaned
291        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
292      - confined inclusion of AD_CONFIG.h to where necessary.
293    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
294    
295    checkpoint51p_post
296    o create initial cd_code package
297      - WARNING: the initialization of fields within packages
298        is broken because INI_FIELDS (where READ_CHECKPOINT is
299        called) is called *before* PACKAGES_INIT_VARIABLES.
300        This seems to be backwards since
301        1) its important to initially zero the entire field including
302           the "halo" region
303        2) zeroing needs to be done *before* reading pickup info
304           and the pickup call might or might not happen in any
305           particular run
306      - this needs an overhaul for R2
307    o cleanup verification/*/code/GMREDI_OPTIONS.h
308    o cleanup testreport
309    
310    checkpoint51o_post
311    o bringing AD-related verif's up to date with genmake2
312      - carbon/
313      - global_ocean.90x40x15/
314      - hs.94.1x64x5/
315      - (front_relax/ )
316    o (more) consistent directory structure for AD-related verif.'s
317    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
318    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
319    o bug fix in find_alpha.F for MDJWF:
320      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
321        change rho -> rho-rhoConst
322      - replace call find_rho to find_rhonum
323    o initialisation of rFlx extended to full array (required by TAF)
324      and shifted to thermodynamics
325    o removed PTRACERS.h in ptracers routine
326    o added surfacetendencyPtr to S/R parameter list pracers_forcing
327    o Correcting initialisations for fVerU, fVerV.
328    o helping TAF to recognize dependency on kUp for
329      fVerU, fVerV
330    o Replacing delZ by delR in pkg/ctrl/
331    checkpoint51o_pre
332    
333    o undid all of cp51 pending some cleanups and discussion
334    o added the [#include "AD_CONFIG.h"] statement to all files that need
335       it for adjoint/tl #defines
336     o re-worked the build logic in genmake2 to support AD_CONFIG.h
337     o removed tools/genmake since it no longer works
338    
339    checkpoint51n_post
340    o modifications to make FREEZE flux visible to pkg/kpp
341      - moved surfaceTendencyTice from pkg/seaice to main code
342      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
343      - subroutine FREEZE now limits only surface temperature
344        (this means new output.txt for global_ocean.90x40x15,
345         global_ocean.cs32x15, and global_with_exf)
346    o added surface flux output variables to TIMEAVE_STATVARS
347    
348    checkpoint51n_pre
349    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
350    o added [#include "AD_CONFIG.h"] to all files that use the following
351      defines:
352      - ALLOW_ADJOINT_RUN
353      - ALLOW_TANGENTLINEAR_RUN
354      - ALLOW_ECCO_OPTIMIZATION
355    
356    checkpoint51m_post
357    o incorporating changes to get TAMC/TAF working in genmake2
358      - added new TAMC/TAF targets to the Makefile
359      - various cleanups related to package handling
360      - these changes should have no impact on the forward model
361    
362    checkpoint51l_post
363    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
364     - faster algorithm for cal_addtime.F
365     - higher precision arithmetic, where needed
366     - pkg/exf *startdate variables changed from calendar date to
367       model integration time
368    
369    checkpoint51l_pre
370    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
371    o enable to apply restoring on S & T only in a latitude band.
372    o update output (external_forcing_surf modif. change truncation errors)
373       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
374    
375    checkpoint51k_post
376    o change default to: useNHMTerms=.FALSE.
377     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
378       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
379     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
380        exp1, ideal_2D_oce
381     - change data file of oceanic exp (leave the results unchanged for now)
382       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
383    o set gravitySign automatically according to the vertical coordinate used
384      (and change sign: back to "logical" value: +1 when R increases downward)
385    o added an include barrier to the default CPP_OPTIONS.h and
386      removed the #include "PACKAGES_CONFIG.h" from it
387    o fix a bug in mom_fluxform (from chk51j_post)
388    
389    checkpoint51j_post
390    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
391    o adjusted some flow directives (dynamics, thermodynamics)
392    o added cubed-sphere case to test cost function
393    o heckpoint_lev?_directives.h now include
394      pkg-specific directives, whenever those are enabled.
395    o Moving pkg-specific flow directives to corresponding pkg
396      Moving pkg-specific differentiation list to corresponding pkg
397      Moving pkg-specific checkpoint-lev storing to corresponding pkg
398      ---> conventions are
399           - pkg_ad.flow
400           - pkg_ad_diff.list
401           - pkg_ad_check_lev?_dir.h
402    
403    checkpoint51i_post
404    o merge of the branch-genmake2
405      - knowingly breaks the older genmake
406      - automatic generation of all ALLOW_${PKG_NAME} defines
407      - new testreport supersedes older testscript
408    o large number of package inclusion and header cleanups
409    checkpoint51i_pre
410    
411    o new output for adjoin of global ocean vector invariant
412    o fix for checkpoint of thermodynamic seaice and bulk_force
413    o Steph gchem various cleanups
414    
415    checkpoint 51h_pre
416    o fixed some single quotes
417    o modify gchem pkg to be more versatile
418    o modifications to clean up dic pkg
419    o add pkg/cfc
420    
421    checkpoint51g_post
422    o provide links for ARPACK and ADM*TLM
423    o start removing verification/vero/
424    o update AD-related stuff
425      (in particular some IF-statements in model/src/ routines)
426    o adding to verification/global_ocean.90x40x15/ adjoint of
427      vector invariant setup
428    
429    checkpoint51f_post
430    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
431    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
432      of tracer Green's fucntions for ocean inversion project.
433    
434    checkpoint51f_pre
435    o Added on-the-fly spatial interpolation capability
436        "USE_EXF_INTERPOLATION" to pkg/exf.
437      - This is a temporary Cartesian-grid hack until
438        the super-duper ESMF coupler becomes available.
439      - See verification/global_with_exf/README for usage example.
440      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
441        flags and modified pkg/seaice accordingly.
442    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
443        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
444        non-local transport term.
445    
446    checkpoint51e_post
447    o pkg/mom_vecinv:
448      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
449      - add time-ave diagnostic of vorticity advection.
450    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
451    o atmospheric geopotential: - include water vapor effect;
452                                - use p^kappa in p* scaling.
453    o land pkg: read initial state from files.
454    o AIM : add stratospheric drag in the upper level
455    
456    checkpoint51d_post
457    o change function ILNBLNK (=> last non-blank char.) to return zero
458      (instead of the string length) when the string. char is empty
459    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
460    o modif's to restore TAMC compatibility
461      - avoid "_d" constructs in PARAMETER declarations
462      - avoid interrupting lines by comment lines
463    o Use cluster local disks for purely local I/O
464      vs. globally visible disks needed for ctrl stuff
465      (merged from ecco-branch)
466      - new active_file_loc... and mdsio_..._loc routines
467      - affected packages: autodiff, ctrl, grdchk, mdsio
468    
469    checkpoint51c_post
470    o introducing integer flag debugLevel
471      - debLevZero: suppress all output
472      - debLevA: standard
473      - debLevB: equivalent to current debugMode=.TRUE.
474    o introducing pathname variable mdsioLocalDir for mdsio
475      that can be specified at runtime
476      (relevant for cluster I/O to local disk)
477    `
478    >>>checkpoint51b_post
479    adjoint of ptracers
480    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
481    o extended state in checkpoint_lev?, etc.
482    o alternative ctrl/cost with tr1 or ptracer
483    o new comlev1_bibj_ptracers
484    o new ptracers.flow
485    o made ptracers_forcing same as external_forcing_s
486    o added verification for adjoint with ptracers
487      - adm. grdchk fail so far
488      - tlm. grdchk OK
489      - checked tapelev/comlev recomputations: OK
490    <<<checkpoint51b_pre
491    
492    checkpoint51a_post
493    o added code for biogeochemistry package
494      - new pkgs: dic, gchem
495      - new subroutine in ptracers
496    o modify code for biogeo packages
497      - in model/src and pkg/ptracers
498    
499    checkpoint51
500    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
501      - autodiff, ctrl, exf, grdchk, seaice
502      kept separate packages
503      - cost, ecco, obcs
504    o updating verification/internal_wave, verification/lab_sea
505      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
506    
507    checkpoint50i_post
508    o Preparing next differentiable checkpoint and sync
509      of MAIN vs. ecco-branch
510      - 1st step: this one is differentiable
511      - 2nd step: next(! not this) checkpoint will have updated packages
512                  from ecco-branch)
513    
514    checkpoint50h_post
515    o new package "land": provide surface BC for AIM.
516    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
517    o AIM: use true log-P extrapolation for near surface temp (= as in
518        F.Molteni paper) ; update aim.5l_cs output.
519    o New variable in PARM03 for more flexible pickups
520    o somewhat cleaned package initialisation sequence for
521      ctrl/ cost/ ecco/ in packages_... routines
522    
523    checkpoint50g_post
524    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
525      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
526      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
527        made the default because of faster convergence than ADI
528    
529    checkpoint50f_post
530    o exf totally restructured
531      - replaced all exf_set_ routines by one generic exf_set_gen.F
532        and made sure it's still differentiable
533      - split exf_getffields.F into new exf_bulkformulae.F
534      - exf_inscal_/exf_outscal_ suffixes consistent with field names
535      - updated adjoint/makefile and relevant verif. accordingly
536    
537    checkpoint50f_pre
538     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
539          + change Evap over land. (update aim.5l_cs output)
540     o added missing .cvsignores and made uniform across expts
541     o changed configuration of tidal_basin_2d expt
542     o added pkg/debug functions for tracing code in fatal crashes
543     o tidied pkg/monitor to use MONITOR_OPTIONS.h
544     o new fn in pkg/monitor to stop model if solution grows too big
545     o removed lots of single quotes from comments
546    
547    checkpoint50e_post
548    o make KPP work with PTRACERS
549     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
550       nearly a copy of kpp_transport_s
551     - there is no analogue to SurfaceTendencyS, so I have to use
552       gPtr(of the surface layer) instead
553    o add a new platform SunFire+mpi (SunFire 15000) to genmake
554    checkpoint50e_pre
555    
556    checkpoint50d_post
557    o change kpp output from multiple-record state files to single-record state
558      files analogous to write_state.F
559    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
560      analogous to the cg2d-related output.
561    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
562      so that writing to internal file fn (with length 512) fails.
563    checkpoint50d_pre
564    
565    checkpoint50c_post
566    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
567    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
568    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
569    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
570    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
571    
572    checkpoint50c_pre
573    Merging from release1_p13:
574    o bug fix for pkg/seaice dynamic solver
575    o Added SEAICE_initialHEFF to pkg/seaice
576    
577    checkpoint50b_post
578    o store u*,v* in gU,V instead of in guNm1,gvNm1
579    o in order to put the momForcing out of the Adams-Bashforth:
580      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
581      to timestep.F
582    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
583    o re-generate output for highly sensitive test-exp:
584       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
585    
586    checkpoint50b_pre
587    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
588    o corrected CPP option mismatch in exf_Bulk... functions for case
589      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
590    
591    checkpoint50a_post
592    o Bug fix for merging between c50 and KPP.
593      ikey was passed from thermodynamics to kpp_calc via
594      common block rather than being recomputed in kpp_calc,
595      in contradiction with new key itdkey.
596      New key ikppkey created, and tamc.h headers updated.
597    
598    checkpoint50
599    - 2nd step of merge with ecco-branch:
600      merge changes in ecco-branch back into main trunk
601    - bug fix in find_alpha
602    - more storing in gmredi_calc_tensor.F, kpp_routines.F
603    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
604    - merged some sliced AD support routines
605    
606    checkpoint49
607    merged from ecco-branch:
608    o exf:
609      - Enable initialisation of forcing fields to constant
610        (runtime) values.
611      - in exf_getffields.F
612        Reduce i-/j-loop to interior domain, discarding overlaps.
613        That also fixes wrong TAF-key computations for key_1, key_2
614        with bulf formulae.
615      - exf_init.F modify #ifdef for exf_init_evap
616      - exf_getffieldrec.F, ctrl_getrec.F
617        The following INT-usages are not safe:
618          fldsecs  = int(fldsecs/fldperiod)*fldperiod
619          fldcount = int(fldsecs/fldperiod) + 1
620        and were modified.
621    o autodiff: checkpoint_lev...
622      - updated storing for bulk formulae (some arrays were missing)
623      - added state for seaice package
624      - synchronized with main branch
625    o DIVA:
626      Modif.s in
627      - the_main_loop.F
628      - the_model_main.F
629      and added cost_final_restore.F cost_final_store.F
630      o With these changes, it is possible to fully separate
631        the first forward run to compute the cost function (mdthe_main_loop)
632        and adjoint runs over individual DIVA intervals (adthe_main_loop)
633        into separate model executions.
634        This enables better tuning of DIVA to given queue sizes.
635      o Loss of cost function value in consecutive DIVA runs is
636        fixed by storing to 'costfinal' file.
637      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
638        beginning/end of adjoint integration is accounted for.
639      The current changes apply to TAF-1.4.26.
640      TAF has one remaining bug, requiring one manual change
641      (see MITgcm manual).
642    o cal: synchronized between MAIN and ecco-branch
643    
644    checkpoint48i_post
645    o Changes to restore differentiability of code w.r.t. previous tag
646      (mostly adding new routines to make list and replacing
647      pressure by totPhiHyd).
648    o Updated and merged grdchk package
649      - has both ADM and TLM checks
650      - works for single- and multi-proc.
651      - output cleaned
652      - worked successfully for parallel DIVA
653    o genmake:
654      - Adding -platform=SP4
655      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
656    o Modif. for DIVA:
657      ctrl_unpack should not be called in intermediate DIVA interval.
658      (similar thing would apply for active files such as
659      tbar, sbar, psbar, which should not be reinitialised;
660      only relevant for ecco-branch)
661    
662    checkpoint48h_post
663    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
664    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
665    o Added SEAICE_initialHEFF to pkg/seaice
666    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
667    
668    checkpoint48g_post
669    --- EOS:
670    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
671      store total Potential in totPhyHyd for diagnostics & EOS.
672    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
673    --- Pressure/geopotential gradient:
674    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
675    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
676      ( changes results of global_ocean_pressure )
677    o NLFS + z-coord.: add eta*Rho' contribution.
678    o accurate phiHyd when using interface-W at the middle between 2 centers
679     ( changes results of ideal_2D_oce )
680    o includes r* 2nd term in potential gradient.
681    
682    checkpoint48f_post
683    Merging from release1_p12:
684    o Modifications for using pkg/exf with pkg/seaice
685      - improved description of the various forcing configurations
686      - added basic radiation bulk formulae to pkg/exf
687      - units/sign fix for evap computation in exf_getffields.F
688      - updated verification/global_with_exf/results/output.txt
689    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
690      (SBO) core products, including oceanic mass, center-of-mass,
691      angular, and bottom pressure (see pkg/sbo/README.sbo).
692    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
693      to avoid negative values in shallow regions.
694      - updated verification/natl_box/results/output.txt
695      - updated verification/lab_sea/results/output.txt
696    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
697    o Added useSingleCpuIO option (see PARAMS.h).
698    o Updated useSingleCpuIO option in mdsio_writefield.F to
699      work with multi-field files, e.g., for single-file pickup.
700    o pkg/seaice:
701      - bug fix in growth.F: QNET for no shortwave case
702      - added HeffFile for specifying initial sea-ice thickness
703      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
704    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
705      kpp_transport_t.F, forward_step.F, and the_main_loop.F
706    o pkg/seaice:
707      - adjoint-friendly modifications
708      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
709    
710    checkpoint48e_post
711    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
712    o dynamics: change definition of computational domain & adapt mom_fluxform
713      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
714    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
715        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
716        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
717        global_ocean.90x40x15 global_with_exf global_ocean_pressure
718        inverted_barometer solid-body.cs-32x32x1
719      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
720    
721    checkpoint48d_post
722    o in preparation for r*:
723     a) use pre-computed gradient of hydrostatic potential:
724        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
725     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
726        => affects results of glob_oce_pressure (different truncation error)  
727      update output.txt of ideal_2D_oce & global_ocean_pressure
728    
729    checkpoint48d_pre
730    o in preparation for r*:
731      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
732      pass the 2 comp. of the grad. as arguments to momentum S/R.
733      but for the moment, only used if it does not change the results.
734    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
735    
736    checkpoint48c_post
737    Modifications in treatment of initial flux forcing controls
738    to avoid extra storing of flux fields.
739    
740    checkpoint48c_pre
741    o Added tidal_basin_2d experiment (currently 1D!)
742    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
743    
744    checkpoint48b_post
745    o r* coordinate added in #ifdef NONLIN_FRSURF block.
746     (modification to pressure gradient not yet implemented)
747    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
748      (for U & V) that are used for vertical advection of momentum.
749    
750    checkpoint48a_post
751    o In preparation for r*, use temp. array to compute vertical transport
752       in flux-form momentum pkg. => change results of few test-exp.
753      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
754                        lab_sea, natl_box & plume_on_slope
755    
756    checkpoint48
757    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
758    
759    checkpoint47j_post
760    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
761    o moved adexch from forward_step to addummy_in_stepping
762    o added exch in ctrl_map_...
763    o aveFreq.=0. at end of cost_final to avoid overwrite in
764      reverse checkpointing loop
765    o Yet more changes in gmredi:
766      * adgmredi_calc_tensor
767        avoiding all recomputation of gmredi_slope_limit
768      * adgmredi_x/y/rtransport
769        added flag for excessive storing to avoid recomp. of
770        u/v/rtans, dTdx/y/z
771        -> this is not really necessary and very memory-consuming
772      * adgmredi_slope_psi:
773        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
774      * gmredi_slope_limit
775        re-activated full calculation of taperfct for case 'ac02'
776    o updating verification/ adjoints of carbon, global_ocean.90x40x15
777    
778    checkpoint47i_post
779    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
780    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
781      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
782    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
783    o gmredi: fix few bugs.
784    
785    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
786    This will be a good checkpoint to plug into the ecco-branch.
787    o few modif.'s to get latest version adjointed
788      (mainly kick out code in ini_linear_phisurf)
789    o modif's to run adjoint with exactConserv
790    o case GM_BOLUS_ADVEC should be cleaned
791      S/R gmredi_slope_psi should be cleaned
792    o verification/carbon now has exactConserv=.TRUE.
793    
794    checkpoint47g_post
795    o time-average AIM output: becomes independent from statvars time-average
796      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
797    o After TAF bug fix:
798      Tested adjoint of gmredi package.
799      Tests were done with checkpoint47 rather than with latest
800      checkpoint47f_post since the latter is broken for the adjoint
801      verification/carbon/ contains both ADM and TLM gradient checks.
802    Here they are, before they get changed/lost/stolen.
803    Mostly modif.'s to fix numerical sensitivities.
804    Gradient checks OK for
805    - GM_taper_scheme:
806      * clipping
807      * ac02
808      * linear
809      * glw91
810      * dm95
811      * ldd97
812    - GMREDI_OPTIONS:
813      * GM_VISBECK_VARIABLE_K
814      * GM_NON_UNITY_DIAGONAL
815      * GM_EXTRA_DIAGONAL
816      * GM_BOLUS_ADVEC
817    in conjunction with data.gmredi parameters to be checked in
818    in a few minutes under verification/carbon/code/
819    
820    checkpoint47f_post
821    Merging from release1_p10:
822    o modifications for using pkg/exf with pkg/seaice
823      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
824        and SEAICE_EXTERNAL_FLUXES
825      - pkg/exf CPP options EXF_READ_EVAP and
826        EXF_NO_BULK_COMPUTATIONS
827      - usage examples are Experiments 8 and 9 in
828        verification/lab_sea/README
829      - verification/lab_sea default experiment now uses
830        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
831    
832    checkpoint47e_post
833    o created a tag prior to creating a branch
834    
835    checkpoint47d_post
836    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
837      at the bottom boundary had an erroneous half slip boundary condition
838    o added bottom drag and no slip boundary condition capabilities to
839      oceanic pressure coordinates code
840    o added new verification experiment global_ocean_pressure, this experiment is
841      also described in the tutorial section of the manual
842    checkpoint47d_pre
843    
844    checkpoint47c_post
845    o Added a verification experiment for a global cubed-sphere ocean run
846      -  verification/global_ocean.cubed32x32x30
847      -  uses pkg/therm_seaice and pkg/bulk_forcing
848    
849    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
850    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
851      when using P-coordinate; only implemented for atmospheric config.
852    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
853      NOTES: requires option NONLIN_FRSURF to be "#define".
854    o update advect_xz/results/output.txt (left from checkpoint44g_post)
855    
856    checkpoint47b_post
857    Merging from release1_p9:
858    o pkg/seaice
859      - removed GOTO's and added taf directives
860      - double precision constants to reduce the g77 (Linux)
861        to F77 (SGI) differences reported in release1_p8
862    o tools/genmake
863      - added SGI options
864    o verification/testscript
865      - updated to that of checkpoint47a_post
866    o verification/global_ocean.90x40x15/input/eedata
867      - modified for SGI f77 compatibility
868    o verification/lab_sea
869      - added description of sea-ice model
870      - added missing matlab routines
871      - added test of thermodynamics parallelization
872    
873    checkpoint47a_post
874    o new pkg: aim_v23
875     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
876       for now, keep the same surface forcing as before.
877     - Part-Cell implemented into AIM; check that Heat & Water are conserved
878     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
879     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
880    o add diagnostic of surface correction term in monitor output
881    
882    o bulk_force and therm_seaice
883    - Two packages:  bulk_force (Bulk forcing)
884      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
885    - Earlier integration from Stephaine Dutkiewicz
886      and Patrick Heimbach.
887    - Two ifdef statements for compile time,
888       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
889    
890    checkpoint47
891    differentiable version of checkpoint46n_post
892    o bug fix in quasihydrostaticterms
893    o * "clean" adjoint code (in terms of extensive recomputations)
894        can now be obtained for all GMREDI options (i.e. for
895        - GM_VISBECK_VARIABLE_K
896        - GM_NON_UNITY_DIAGONAL
897        - GM_EXTRA_DIAGONAL
898        - GM_BOLUS_ADVEC )
899      * However, wrong gradient check problem remains unsolved.
900      * New CPP options have been introduced for different
901        tapering schemes
902    o external_fields_load now part of differentiation list
903    o pressure needs multiple storing;
904      would be nice to have store_pressure at beginning or
905      end of forward_step, e.g. by having phiHyd global (5-dim.)
906      (NB: pressure is needed for certain cases in find_rho,
907      which is also invoked through convective_adjustment).
908    o recomputations in find_rho for cases
909     'JMD95'/'UNESCO' or 'MDJWF' are OK.
910    o #define ATMOSPHERIC_LOADING should be differentiable
911    o ini_forcing shifted to begining of initialise_varia
912    o Incorporating QNVS line search routines into MITgcm
913      (this is separate code, and therefore not under pkg)
914      lsopt/, optim/
915    o Updated verification/carbon/
916      - #define GM_VISBECK_VARIABLE_K
917      - GM_taper_scheme    = 'ldd97'    
918    
919    checkpoint46n_post
920    Merging from release1_p8:
921    o verification/natl_box:
922      updating new external_fields_load routine
923    o New package: pkg/seaice
924      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
925      The sea-ice code is based on Hibler (1979-1980).
926      Two sea-ice dynamic solvers, ADI and LSR, are included.
927      In addition to computing prognostic sea-ice variables and diagnosing
928      the forcing/external data fields that drive the ocean model,
929      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
930      The implied surface heat flux is then stored in variable
931      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
932      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
933      non-local transport term.  Because this call precedes model
934      thermodynamics, temperature under sea-ice may not be "exactly" at
935      the freezing point by the time theta is dumped or time-averaged.
936      N.B.: fairly large differences in accuracy occur across
937            different platforms/compilers; comparison between
938            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
939            generated output gives:
940       T           S           U           V
941      C D M    c        m  s        m  s        m  s        m  s
942      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
943      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
944      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
945    
946      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
947    o GAD:
948      - generated new common blocks to account for call of
949        same gad routines with differing traceridentities
950        (needed to modify tracerIdentity indices in GAD.h)
951      - generated separate common blocks for case useCubedSphereExchange
952        (Department of Futurology)
953      - parameter lists to gmredi_?transport: added tracerIdentity
954      - added new key indices to tamc.h
955    o external_fields_load:
956      - added this routine to TAF list
957      - needed to make some common blocks global and additional storing
958        along the same lines as exf package (checkpoint_lev?_directives.h)
959    o exf:
960      updated external forcing package
961      - bug fixes carried over from ecco-branch
962        (missing OBCS_OPTIONS.h in two routines)
963      - enable easy to use "no forcing".
964      - added exf I/O for atmospheric loading
965      - added exf I/O for runoff data
966      - transfered scaling between exf <-> MITgcm to exf namelist
967    o Adding new verification experiment global_with_exf.
968      This verification experiment is almost identical to the
969      global_ocean.90x40x15 experiment, except that it uses
970      the exf (and cal) package instead of the
971      external_fields_load routine (cf README file).
972    
973    checkpoint46m_post
974    o modified testscript to return -- when there are no lines of "%MON" output
975    o added new flag "quasiHydrostatic" for QH mode
976      and new routine quasihydrostaticterms()
977    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
978      New routine: mom_u_coriolis_nh()
979    o fixed sign of non-hydrostatic metric terms in u and v equations.
980      Depend on correct sign of gravitySign.
981    o added work.pc* to .cvsignore in aim directories using ifc
982    o introduced flag for controllin non-hydrostatic metric terms
983    o removed gravitySign from PARM04
984    o switched to g77/ifc from pgf77 in aim experiments
985    
986    checkpoint46l_post
987    o made convective adjustment work with pressure coordinates:
988     - changed the direction of k-loop in convective_adjustment.F for the
989       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
990     - adjusted the reference pressure k-index in convective_adjustment.F
991     - adjusted the convection condition in convect.F (in analogy to
992       calc_ivdc.F)
993     - convective_adjustment no longer computes anything on the halos
994     - removed the warnings about negative salinity from find_rho.F and
995       find_alpha.F; instead the new routine look_for_neg_salinity, called
996       at the beginning of find_rho, find_alpha, and find_beta, does a
997       check of the entire slice, if CPP-option
998       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
999    checkpoint46l_pre
1000    
1001    checkpoint46k_post
1002    o fixed the verification/global_ocean.90x40x15 experiment:
1003     - new bathymetry (the world according to A., JMC, and M.)
1004     - new initial fields and forcing fields (*.bin files)
1005     - new POLY3.COEFFS (for the next release one should switch to a full
1006       equation of state: JMD95P or MDJWF)
1007     - fixed several errors and redundancies in the data file
1008     - experiment uses looped cells
1009     - added matlab directory with diagnostic scripts for plotting of output
1010    
1011    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1012     - read AIM physics parameters from a file (data.aimphys)
1013     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1014    
1015    checkpoint46j_post
1016    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1017    o move wVel computation at the end of the time step, in S/R integr_continuity
1018    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1019    o update timeave pkg for wVel diagnostic.
1020    checkpoint46j_pre
1021    
1022    checkpoint46i_post
1023    o Clean up AIM package (and keep the results unchanged):
1024      include CPP_OPTION and use IMPLICT NONE in all routines ;
1025      declare all the variables _RL ; use _d 0 for all numerical constants.
1026      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1027    
1028    checkpoint46h_post
1029    o cleaned up the use of rhoNil and rhoConst.
1030      - rhoNil should only appear in the LINEAR equation of state, everywhere
1031        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1032        and the dynamical equations are all divided by rhoConst
1033    o introduced new parameter rhoConstFresh, a reference density of fresh
1034      water, to remove the fresh water flux's dependence on rhoNil. The default
1035      value is 999.8 kg/m^3
1036    o cleanup up external_forcing.F and external_forcing_surf.F
1037      - can now be used by both OCEANIC and OCEANICP
1038    checkpoint46h_pre
1039    
1040     Added code to convert surface volume flux (fresh water) into
1041     a mass flux when using P coordinates in the ocean (OCEANICP).
1042     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1043    
1044    checkpoint46g_post
1045    o Include a new diagnostic variable phiHydLow for the ocean model
1046      - in z-coordinates, it is the bottom pressure anomaly
1047      - in p-coordinates, it is the sea surface elevation
1048      - in both cases, these variable have global drift, reflecting the mass
1049        drift in z-coordinates and the volume drift in p-coordinates
1050      - included time averaging for phiHydLow, be aware of the drift!
1051    o depth-dependent computation of Bo_surf for pressure coordinates
1052      in the ocean (buoyancyRelation='OCEANICP')
1053      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1054        Theta, Salinity, and Pressure in the parameter list. This routine is
1055        presently contained in find_rho.F. This routine does not give the
1056        correct density for 'POLY3', which would be a z-dependent reference
1057        density.
1058    o cleaned up find_rho
1059      - removed obsolete 'eqn' from the parameter list.
1060    o added two new verification experiments: gop and goz
1061      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1062    checkpoint46g_pre
1063    
1064    checkpoint46f_post
1065    o Enable tangent linear (forward mode) gradient checks:
1066      - extended active file handling to g_... files
1067      - added TANGENT_SIMULATION to theSimulationMode
1068      - extended grdchk package accordingly
1069    o added tangent linear setup in verification/carbon/code_ftl
1070    o added adjoint setup in verification/front_relax/code_ad
1071    
1072    checkpoint46e_post
1073    o Added new equation of state -> MDJWF
1074      - EOS of McDougall et al., 2002, JAOT, submitted
1075      - caveat: the equation of state is only valid for a smaller (more
1076        realistic?) range of values than JMD95P/Z and UNESCO
1077      - added masks to the calculation of pressure in store_pressure
1078      - added more check values for density in check_eos (ini_eos.F), some of
1079        the old check values are out of the range of the MDJWF-eos, so don't
1080        expect perfect matches for those
1081    checkpoint46e_pre
1082    
1083    checkpoint46d_post
1084    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1085      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1086      case of pressure coordinates. eosType='JMD95Z' in
1087      combination with buoyancyRelation='OCEANICP' now causes an error.
1088    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1089      in find_alpha/beta.
1090    checkpoint46d_pre
1091    
1092    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1093      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1094    
1095    checkpoint46c_post
1096    o Changes necessary for ocean in p-coordinates
1097     -  Added new buoyancy relation = 'OCEANICP'
1098     -  Added new parameters = gravitySign (this used to be contained inside
1099        the factor dRdZ which I added when we first switched to R coordinates).
1100     X GM/Redi is not compatible (yet)
1101     X bottom drag and no-slip need to be debugged.
1102    checkpoint46c_pre
1103    
1104    checkpoint46b_post
1105    o Added new equation of state -> JMD95Z and JMD95P
1106      - EOS of Jackett and McDougall, 1995, JAOT
1107      - moved all EOS parameters into EOS.h
1108      - new routines ini_eos.F, store_pressure.F
1109    o Added UNESCO EOS, but not recommended because it requires
1110      in-situ temperature (see JMD95)
1111    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1112      unesco.f to be used with POLY3
1113    checkpoint46b_pre
1114    
1115    checkpoint46a_post
1116    o Added (atmospheric) pressure loading
1117      - new field in FFIELDS.h, etc...
1118      - new cpp flag ATMOSPHERIC_LOADING
1119    o Changed hFacC to _hFacC in calc_phi_hyd.F
1120    o Added SHORTWAVE_HEATING to some files for consistency
1121    checkpoint46a_pre
1122    
1123    checkpoint46
1124    further merges from release1_p5
1125    o new ctrl package
1126      - adopted from ECCO environment to enable optimization
1127      - added Eliassen Palm fluxes to controls
1128    o added Eliassen Palm flux controls to gradient check package
1129    o cost package
1130      - Compatible with new ctrl package
1131      - added Eliassen Palm cost hooks
1132      - modif's of existing cost functions
1133    o Adjoint-related bug fixes in kpp:
1134      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1135      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1136    o autodiff package
1137      - flow directives:
1138        + new for S/R do_the_model_io
1139        + enhanced for S/R checkpoint
1140        + new gmredi.flow
1141      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1142        disable adcommon.h/g_common.h by default.
1143      - fixed problem for adjoint of global_max
1144    o modified verification/carbon/
1145    o New setup for adjoint of global_ocean
1146    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1147    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1148    o incorporated hooks for sponge layer code (external_forcing.F)
1149    
1150    checkpoint45d_post
1151    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1152    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1153      (affects plume_on_slope "cg2d" output)
1154    o add new parameter deltaTfreesurf for free-surface time stepping
1155    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1156    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1157    o change phiMin in exp1 (to agree with documentation)
1158    o add new flags:
1159     - T,S forcing inside/outside Adams-Bashforth
1160     - turn off temp,salt advection and/or forcing
1161     - for each tracer, define internal flag for multiDimAdvection & A-B
1162    o monitor: change definition of KE to check conservation of Energy
1163    
1164    checkpoint45c_post
1165    o Removed f90 comments ("!")
1166    o Modified initialisations to enable exf package for MITgcm
1167      (without invoking ECCO_PACKAGE).
1168    o modifications to gradient check package (Martin Losch)
1169      - enable centered differences
1170      - modified format of standard output
1171    
1172    checkpoint45b_post
1173    o cleaned exchange calls in cg2d
1174    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1175    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1176      to configure barotropic setup (Martin Losch)
1177    o moved some initialisations within bi,bj loop in dynamics
1178      (TAF flow dependency)
1179    o in initialise_varia, moved call packages_init_variables
1180      before convective_adjustment_init
1181      (corresponding adjustment of TAF tape initialisation).
1182    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1183    
1184    checkpoint45a_post
1185    o compute Rho over the whole domain (extend iMin,jMin indices)
1186    o specific exchange for X-slice domain (case Ny=1)
1187    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1188    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1189    
1190    checkpoint44h_post = checkpoint45
1191    o Fix to restore differentiability:
1192      place at which packages_init_variables is called in
1193      initialise_varia is crucial for reverse control flow.
1194    o modifications in GMRedi to enable stable adjoint
1195      (corresponding modif's in thermodynamics, dynamics)
1196    o added missing hook for sponge layer code in external_forcing
1197    o modified test cost functions
1198    o storing in gad_advection (plus removal of write(0,*)!
1199    o missing headers TR1.h added in convective_adjustment routines
1200    o errorMessageUnit set non-equal zero in eeboot
1201      (conflict on some platforms, e.g. IBM SP3)
1202    o modified carbon verif.
1203    
1204    checkpoint44h_pre
1205    o vertical grid option: allow to put the Interface at the middle between
1206      2 cell-centers ; replace delZ in pkg/kpp by drF.
1207    o GM Advective form: Tracers are advected using the residual transport (=
1208      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1209    
1210    checkpoint44g_post
1211    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1212      results) ; ifdef missing in thermodynamics.F
1213    
1214    checkpoint44f_pre,checkpoint44f_post
1215    o added PTRACERS package
1216      This allows an arbitrary number of passive tracers to be integrated
1217      forward simultaneously with the dynamicaly model.
1218      + Implemented so far:
1219        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1220        - I/O and checkpointing
1221        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1222      + Not implemented so far:
1223        - KPP
1224        - OBCS
1225      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1226        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1227        line in data.pkg.
1228      + This package is disabled by default since it increases storage.
1229    
1230    
1231    o testscript: added -cleanup option
1232    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1233                 b) enable to filter 2D fields.
1234    
1235    checkpoint44e_pre,post
1236    o re-wrote convective adjustment to use pre-calculated weights
1237      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1238      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1239      Original calls to convect() still in place.
1240    
1241    chkpt44d_pre,post
1242    o added missing EXCLUDE_MONITOR flags
1243    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1244      (incompatible typ in MIN/MAX expressions caused problems
1245      on IBM SP3)
1246    o in genmake added variable MAKEDEPEND
1247      plus resetting for case SunOS
1248    o added timer_stats.c routine for IBM SP3
1249    o removed variables in dynamics
1250    !!! I forgot to create tag chkpt44d_pre !!!
1251    !!! But chkpt44d_pre = chkpt44c_post    !!!
1252    
1253    o real fresh water flux implemented with non-linear free-surface.
1254    
1255    chkpt44c_pre,post
1256    o few fix (mask in shap_s2, EmPmR in external_field_load,
1257      USE_NATURAL_BCS in solve_for_P);
1258    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1259    
1260    checkpoint44b_pre/_post
1261    o merge of relevant stuff from the ecco-branch:
1262      - genmake: removed $S64 overwrite for case SunOS
1263      - pkg/exf: update and corrections for field swapping and obcs
1264      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1265                  harmonized between ECCO and MITgcm
1266      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1267                      updated checkpointing_lev... lists for obcs
1268      - model/src: minor changes in forward_step, plot_field
1269                   added directive for divided adjoint in the_main_loop
1270      - pkg/mdsio: added mdsio_gl_slice
1271    
1272    o check parameters & config (chkpt44a_pre,post)
1273    o OBC and NonLin_FrSurf.
1274    
1275    checkpoint44
1276    o fix bug in mom_vi_del2uv
1277    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1278    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1279    o update AIM experiments (NCEP input files)
1280    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1281    o added some stuff for AD
1282    
1283    checkpoint43
1284    o added two new advection tests
1285    o added global 4x4 degree ocean test
1286    o added test of H&S94 with free surface on cube
1287    o some final mods for gradient check, adjoint,...
1288    
1289    checkpoint42
1290      Fixed AD-related problems:
1291    o Store directives up-to-date with re-arranged Adams-Bashforth
1292      (mainly thermodynamics.F)
1293    o New store directives for multi-dim. advection schemes
1294      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1295      * new common block and key passkey
1296      (mainly gad_advection.F)
1297    o Modified store directives for split of dynamics/thermodynamics
1298      for the case ALLOW_KPP
1299    o Cleaned argument list for timestep_tracer.F
1300    
1301    checkpoint41
1302    o re-formatted/added comments in prologues of key subroutines
1303      to work with protex
1304    
1305    checkpoint40
1306    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1307    o added FLT (floats) package from Arne along with demo. experiment
1308    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1309      implementation of forward-in-time forcing terms
1310    o more mods for non-linear free-surface including new variable
1311    o modified multi-dim method to work on cube
1312    o bug fix in KPP (from DM)
1313    
1314    checkpoint40pre9
1315    o added DST advection schemes
1316    o fix MPI bug on SGI's
1317    o modifications for non-linear free-surface
1318    o fixed conditionals for fixed flow/passive tracer only mode
1319    o added tension/strain form of stress tensor
1320    o changes to commenting of arguments for TAF/TAMC
1321    o added/updated many matlab scripts
1322    o added multi-dimensional advection method for tracers
1323      
1324    checkpoint40pre8
1325    o new package rw/
1326      Added method for dumping intermediate local arrays:
1327      mdsio_writetile - same as mdsio_writefield except works from inside
1328                        bi,bj loop
1329      mdsio_writelocal - same as mdsio_writetile except works for local
1330                         arrays
1331      write_local_r? - higher-level wrapper for mdsio_writelocal
1332      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1333      Example given at end of mom_vecinv.F that dumps some local arrays.
1334    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1335      control flux-form versus vector invariant code.
1336      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1337      or genmake -DISABLE ...
1338    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1339      (additional storing is now needed for case vecinv;
1340      currently nothing implemented to switch this storing off
1341      in case fluxform is used since no CPP flag available).
1342    
1343    checkpoint40pre7
1344    o bug fix in dynamics.F
1345      calc_viscosity called before k=1,Nr loop.
1346    o added some #ifdef's ALLOW_PASSIVE_TRACER
1347    o cleaned initialisations in ctrl_map_ini
1348      related to TAF
1349    
1350    checkpoint40pre6
1351    o split dynamics into thermodynamics & dynamics
1352    o corresponding split of calc_diffusivity into
1353      calc_diffusivity, calc_viscosity
1354      (kpp_calc_diff, kpp_calc_visc).
1355    o Added diffkr, kapgm to control variables
1356    o bug fix in gmredi_slope_limit for ldd97
1357    
1358    checkpoint40pre5
1359    o proper initialization of Adams-Bashforth time stepping
1360      + uses forward step for very first step of model (iter=0)
1361    o re-generated *all* output since almost all output is modified by this
1362      change (sorry but we've been putting this one off for about 2 years)
1363      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1364        *not* regenerated since they are already out of date and I don't
1365        want to create the impression that they are suddenly working.
1366    o removed KAP stuff for DEC's
1367    o modified/added many .cvsignore files in */code and */input
1368    o added new expt "solid-body.cs-32x32x1"
1369      + this uses an alternative form of ini_curvilinear_grid.F which
1370        is not necessarily any better than the current one...
1371    
1372    checkpoint40pre4
1373    o added re-initialisations of utrans,vtrans,rtrans in
1374      calc_common_factors which are crucial for TAF.
1375    o extended iMin,jMin range for calc_common_factors,
1376      calc_diffusivity
1377    o added option ALLOW_PASSIVE_TRACER
1378    o a few minor updates and fixes
1379    
1380    checkpoint40pre3
1381    o created calc_gtr1.F for gad package
1382    o split the_main_loop and re-introduced forward_step
1383    o some recomputations of nIter0 for TAMC
1384    
1385    checkpoint40pre2
1386    o Updated to latest branch of AJA, JMC
1387    o Added gradient check package
1388    o Added routines for passive tracer handling
1389    o Added carbon sequestration sensitivity experiment
1390    
1391    checkpoint39
1392     o Modifications and fixes to support TAMC
1393       (mainly missing or wrong directives)
1394     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1395       in addummy_in_stepping
1396     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1397     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1398     o Included following packages:
1399       cal: calendar
1400       exf: external forcing
1401       ecco: essential routines to control use of cal, exf
1402             (NB: this is not the full ECCO environment)
1403     o disabled some packages by default in genmake
1404    
1405    checkpoint38
1406     o see notes_c37_adj.txt
1407     o corrected wrong layer index in external_forcing_t
1408     o replaced the_main_loop/forward_step by the_main_loop
1409     o removed forceoutput from write_state
1410       (replaced criteria for initial/final state)
1411     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1412    
1413    checkpoint37
1414     o mdsio.F routine split and packaged in pkg/mdsio
1415       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1416        used unless genmake -disable=mdsio)
1417     o allow a more precise surface-geopotential gradient for the atmosphere
1418       taking into account the change in space of Alpha (=1/rho) at the surface.
1419     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1420       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1421     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1422       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1423       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1424     o Time-Average diagnostics defined as a pseudo package "timeave".
1425     o pickup files : old pickup (before c35) did not work with new code (c35
1426       and after) unless activating 2 commented lines in initialise-varia.
1427     o Non-Hydrostatic pickup file Pb fixed.
1428     o bug with Rigid-lid version (since c35) fixed.  
1429    
1430    checkpoint36
1431     o implement Crank-Nickelson barotropic time-stepping
1432     o recover Time-Average diagnostics
1433     o fix Pb in checkpoint (PR#19)
1434     o AIM become a standard package ; clean unused CPP_kees
1435    
1436    checkpoint35
1437     o subtantial rewrite of dynamics.f
1438     o allows staggered time-stepping
1439     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1440     o added bottom drag (linear + quadratic)
1441    
1442    checkpoint34
1443     o Modified exchange routines for correct reverse simulation.
1444     o Added verification output to comply with bug fix in impldiff.F
1445       as of c33 (exp2, natl_box).
1446     o Corrected store directives in dynamics.F
1447     o Corrected array boundaries in impldiff.F
1448     o Corrected array dimensions in gmredi.
1449       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1450     o Added routine GLOBAL_SUM_INT to global_sum.F
1451     o Added mdsio_gl.F for ECCO purposes.
1452    
1453    checkpoint33
1454     o Fixed bug in lower BC in impldiff.F
1455     o Fixed confusion about units of forcing arrays in FFIELDS.h
1456       namely Fu,Fv,Qnet,Qsw,EmPmR:
1457       - Removed verification/natl_box/code/external_fields_scale.F
1458         (did not differ from that in model/src)
1459       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1460         (see FFIELDS.h for description)
1461       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1462         kpp_calc.F and kpp_transport_t.F
1463       - Removed model/src/external_fields_scale.F and calls to it
1464       - verification/natl_box uses flux data with "atmospheric" sign so
1465         a special version of external_fields_load.F is used to
1466         change the data as it's read in. This way, the arrays
1467         have the right units and signs at all times tha a user could
1468         possibly use them.
1469     o Corrected genmake to delete a temporary file during configuration
1470    
1471    checkpoint32
1472     o Scaling of forcing fields moved from external_forcing.F to
1473       external_fields_scale.F, called directly after loading fields.
1474     o Surface relaxation terms added to surface tendency fields in
1475       extra subroutine.
1476     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1477       fields.
1478     o Changes in GMRedi to comply with packaging structure.
1479     o Modifications and bug fixes in KPP package.
1480     o Verification experiment for KPP added (verification/nat_box/)
1481    
1482    checkpoint31
1483     o Packages interface brought in line with defined standard
1484       -> new routines packages_...F
1485       -> changes in initialise_fixed.F, initialise_varia.F
1486       -> enables initialisation interface for ECCO package
1487     o Rescaling of external forcing fields immediately after read
1488       (removed from external_forcing.F)
1489       -> new: surface_fields_scale.F
1490       -> affects ini_foorcing.F, external_fields_load.F
1491     o Computation of surface tendencies before tendency updates.
1492       -> new: external_forcing_surf.F
1493     o Change of variable names useGMRedi, useKPP, useECCO
1494     o Further changes in dynamics.F, impldiff.F for TAMC
1495     o Tested for experiments 0, 2, 4.
1496       - not yet tested for GMRedi.
1497       - not yet tested for KPP.
1498    
1499    checkpoint30
1500     o Updates for OBCs
1501     o New experiment for test OBCs (internal_wave)
1502     o New output.txt in verification/exp4/results/
1503     o Updates for KPP: calculation of viscosity corrected, new variables
1504       kpp_dumpFreq and kpp_taveFreq
1505     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1506       and entry for T90 in genmake
1507    
1508    checkpoint29
1509     o packaged KPP and GM/Redi
1510    
1511    checkpoint28
1512     o Corrected initialization of hFacMin for difference vertical coordinates
1513     o Modified calculation of partial cell thickness to more robust algorithm
1514     o config_summary.F: replaced write_1D_... by write_0D_...
1515       read_write.F: added subroutines write_0D_...
1516     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1517       included some initialisations required for TAMC.
1518     o routine calc_isoslopes: modified sqrt computation to make it
1519       differentiable for zero argument.
1520     o routines dynamics, impldiff:
1521       included store directives and tape key computations required for TAMC.
1522     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1523    
1524    checkpoint27
1525     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1526       formulation works properly with variable resolution.
1527     o restructured the calling tree between the_model_main() and dynamics()
1528     o split initialise() into initialise_fixed() and initialise_varia()
1529     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1530       in new routine ini_psurf()
1531    
1532    checkpoint26
1533     o moved some #ifdef in optional routines to encompass everything
1534       except the argument declarations. This was using up some memory.
1535     o fixed macros like _ADT to work with both versions of Linux cpp
1536     o cleaned up some unused and uninitialized variables
1537       (helps when debugging with strict compile options)
1538     o split up CPP_EEOPTIONS.h into options and macros
1539       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1540     o patch for 2 processor JAM mode
1541    
1542    checkpoint25
1543     o updates for OBCs and NH
1544     o dramatically reduced memory usage
1545     o added "JAM" routines for use on Artic network
1546     o parameterization of convection by implicit vertical diffusion
1547     o added a diagnostic of convective index
1548     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1549       (this is was partly for OBCs and NH but also in anticipation of
1550        an explicit free-surface option)
1551     o initial state input files for U and V
1552    
1553    checkpoint24
1554     o Removed some spurious "REAL"s
1555     o Updated KPP to latest version from JPL
1556     o Added a COS(latitude) in horizontal viscosity
1557    
1558    checkpoint23
1559     o Added del^4 diffusion for salt and temperature
1560     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1561    
1562    checkpoint22
1563     o Made many small changes: implicit none, format(i5), etc...
1564     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1565    
1566    checkpoint21
1567     o Introduced new I/O package that supports direct-access records (mdsio.F)
1568     o Split-up mid-level I/O routines
1569     o Updated input data for experiments 0,1,2,4 and 5
1570     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1571    
1572    checkpoint20
1573     o Tidied up open-boundaries some more
1574     o Added non-hydrostatic code
1575     o Fixed some input data
1576     o Modified MPI start-up to work in "coupled" context.
1577    
1578    checkpoint19
1579     o Tidied up directory structure for verification experiments.
1580     o Added new code for open boundaries.
1581     o Corrected advective terms near boundaries.
1582     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1583     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1584     o Split default parameters out of ini_parms.F into set_defaults.F.
1585    
1586    checkpoint18
1587     o Further changes for optional code generation with
1588       CPP - ugh!
1589    
1590    checkpoint17
1591     o Beginning to incorporating modularity
1592       for supporting atmos. and ocean configs.
1593     o Small changes for TAMC complinace
1594     o New ultra simple test case. Barotropic box
1595       configuration "exp0".
1596    
1597    checkpoint16
1598     o Minor changes to exchange routines to support
1599       accumulation in reverse mode. Adjoint of an
1600       assignment is an addition.
1601     o Changes to support compilation by TAMC (LR(1)
1602       syntax) and by g77 under Linux ( 72 character
1603       limit ).
1604    
1605    checkpoint15
1606     Rewrote exchange routines to allow
1607     o General tile <-> tile connectivity.
1608     o TAMC reverse mode flag ( is this really needed? )
1609     o Variable width overlap and exchange region widths.
1610     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1611       shmput/shmget, VIA, SYSV shmem and every other cool
1612       communication method.
1613    
1614    checkpoint14
1615     Consistent isomorphism chages made. These allow dynamical core
1616     to support both pressure and meters as a vertical coordinate.
1617    
1618    checkpoint13
1619     Release which corrects global_max problem and a couple
1620     of KGM time-averaging diagnostic errors. Also contains
1621     a double-gyre experiment setup as well as the baseline
1622     4 degree global template. The double gyre template is
1623     organised to allow it to be applied automatically to
1624     the baseline configuration.
1625    
1626    branch-point-rdot
1627     A few tidy-ups have been made bt the real point of this
1628     check-point (excuse the pun) is to allow a branch to be
1629     made for the purposes of adding the rDot alterations.
1630     I don't want to commit the rDot to the main-trunk until
1631     we've actually tested it...
1632    
1633    checkpoint12
1634     Tidy up and added generic genmake script (formerly
1635     configure script).
1636     Released to testers.
1637    
1638  checkpoint11  checkpoint11
1639   Re-arranged initialise() and introduced ini_vertical_grid()   Re-arranged initialise() and introduced ini_vertical_grid()
1640   and ini_masks_etc().   and ini_masks_etc().

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