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revision 1.9 by adcroft, Thu Jul 2 14:20:04 1998 UTC revision 1.273 by edhill, Mon Apr 5 06:05:07 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 monitor package can write to NetCDF files and/or STDOUT
7    o fix re-definition bug in MNC_GRID_INIT_ALL()
8    o doc/api_reference added
9      - a framework for building an API Reference Manual using all
10        the "protex" comments embedded in the code
11      - see pkg/generic_advdiff, pkg/mnc for examples
12    o MNC:
13      - make myThid the last argument for all subroutines
14      - new default for the grid files: NO halos
15      - add useMNC and other run-time flags
16      - separate per-file-group handling of the unlimited dimension
17      - early initialization of MNC w/ flags read at the eeboot stage
18        and lookup tables set in initialize_fixed
19      - write all MNC output to a freshly-created directory
20    o thermodynamics sea-ice (thsice) is now tested with testreport.
21    o test exp. advect_cs: use the standard cs32 grid ; update output.
22    o Added functionality to grdchk:
23      pick global i,j,k position (or nearest wet) where to perform check.
24    
25    checkpoint52l_post
26    o new land formulation:
27      a) use ground enthalpy as prognostic variable to ensure exact
28         energy conservation.
29      b) account for water temperature and for latent heat of freezing
30         in all processes (rain, run-off, ground storage)
31      c) compute surface and ground temperature implicitly.
32    o aim_v23 modification for new land model:
33      a) Treat separately land / ocean / sea-ice surface fluxes
34         to allow implicit computation of land & sea-ice surface temp.
35      b) add snow precipitation.
36    checkpoint52l_pre
37    
38    o fix problem (when 1 tile is empty) in min/max monitor.
39    o fix bug in timeAve (u,vZetatave in common block)
40    o no restoring terms under ice for pkg/seaice
41    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
42    o bug fix for pkg/seaice pickups
43    o change MNC call locations and add coordinate attributes
44    o mask vorticity at the corner ; affects global_ocean.cs output
45    o fix ini_curvilinear_grid ; test CS experiments with mpi
46    o aim.5l_cs: modify sea-ice fraction input file ; update output
47    o exf: Adding simple range check routine for exf fields after read
48    
49    checkpoint52k_post
50    o removed top-level directory "diags"
51      - we migrated these functions to pkg/timeave a long time ago
52    o fixed bug introduced in pkg/monitor
53    o accuracy ctrlprec = 32 insuffient for gradient checks using
54      averaged fields (I/O via cost_averages)
55      -> use ctrl.h in active_file*.F to control I/O precision.
56    o paramter list of CALL ADTHE_MAIN_LOOP
57    o added initial do_the_model_io to ecco
58    o set all ...Freq to zero after cost_final
59      taveFreq, dumpFreq, pChkptFreq
60    o MAIN and ECCO differentiability restored
61    
62    checkpoint52j_post
63    o fix nchklev in tamc.h for global_ocean...
64    o Bringing flow and store directives up-to-date
65    o Really weird thing!
66      call do_the_model_io from the_main_loop with parameters
67      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
68      TAF places a faulty re-call of initialise_varia
69      after cost_final call which should not be there!
70    checkpoint52j_pre
71    
72    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
73      error messages
74    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
75    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
76      debug output
77    o modfied mdsio_writefield.F to handle non-global files under exch2
78    o update AIM Cubed-Sphere exp (aim.5l_cs):
79      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
80    o update AIM Equatorial Channel exp:
81      use standard aim_v23 pkg and change the SST fields to be more realistic.
82    o globalFile now works with exch2
83    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
84      mon_vort3.F to make exch2 friendly with >1 tile per cube face
85    o limit timeave output for hi-res integrations
86    
87    checkpoint52i_post
88    o removed CPP_EEOPTIONS.h from verification/*/code
89    o updated the tiling for global_ocean_pressure
90    checkpoint52i_pre
91    
92    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
93      the old pkg/aim).
94    
95    checkpoint52h_pre
96    o shortened offending lines in exch2_send_rx?.template
97    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
98    o genmake2: add build & execute test for NetCDF code
99    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
100      old grid files, moved CPP_EEMACROS.h to pkg/exch2
101    o added useSingleCPUIO flag to monitor.F and mon_out.F
102    o added temporary hack for sea-ice dynamics on the cube:
103      metric terms are ignored and it is assumed that
104      there is no sea-ice on cube faces 1, 2, 4, and 5.
105    
106    checkpoint52f_post
107    o added exch2 cube routines to pkg/exch2
108    o modified hs94.cs-32x32x5 to use it
109    o added new grid files to hs94.cs-32x32x5
110    checkpoint52f_pre
111    
112    checkpoint52e_post
113    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
114      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
115    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
116      to work with implicit vertical advection and AB ;
117    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
118    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
119     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
120    checkpoint52e_pre
121    
122    o fix bug in impldiff when Nr=1 or Nr=2.
123    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
124    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
125    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
126      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
127    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
128    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
129    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
130    
131    checkpoint52d_post
132    o re-tiled many expts to allow comparison in multi-processor mode
133      - updated output accordingly
134      - changed hs94.128x64x5 to use intial T from file rather than use the
135        random number generator
136    o add infrastructure in model routines for fizhi and gridalt packages
137    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
138    o changes to permit hi-res, cubed-sphere, configuration
139      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
140      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
141      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
142        of surface winds for the cube
143      (A verification experiment, based on global_ocean.cs32x15, but with
144       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
145       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
146       complete with example surface forcing files and matlab scripts to look
147       at the output and compare it with that of global_ocean.cs32x15.)
148    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
149       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
150       to conform to the common rule.
151    o check-in the first version of the coupler + interfaces for multi-components
152       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
153       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
154       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
155       - ocean and atmos. share the same horizontal grid (no interpolation).
156       - exchanges between component and coupler is done in forward_step
157    o new verification experiment, cpl_aim+ocn:
158       coupled ocean - AIM atmosphere on cs32 grid.
159    
160    checkpoint52d_pre
161    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
162    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
163    
164    checkpoint52c_post
165    o Fixing OPTIONS files for use of exf:
166      - ALLOW_ECCO not needed
167      - ECCO_CPPOPTIONS.h should not be included from
168        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
169        as has been the case in the past
170      - All cal/exf related options are currently set in
171        single header file. Should remain so until we
172        agree on a consistent new policy.
173    o Removed all CPP options for cal package.
174      cal has no more CPP options.
175    o modified STOREs in GAD_ADVECTION
176    o corrected key comp. for passkey
177    
178    checkpoint52b_post
179    o new version: "thsice" of thermodynamic sea-ice pkg:
180     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
181     - modify fluxes but do not change theta directly;
182     - light cleaning of bulk_force pkg (still needed with thsice).
183     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
184       + output_thsice.txt to test thsice & bulk_force pkgs.
185    o put back grid & coriolis monitor output.
186    checkpoint52b_pre
187    
188    o call "do_the_model_io" at the beginning (=> dump initial state)
189    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
190    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
191      (need info on NUMBER_OF_PTRACERS)
192    o missing PTRACERS headers in some routines
193    o default tamc.h in pkg/autodiff supposed to crash
194      to ensure proper customization
195    
196    checkpoint52a_post
197    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
198      - moved surfaceTendencyTice from pkg/seaice to main code
199      - subroutine FREEZE_SURFACE now limits only surface temperature
200        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
201        => new output.txt for global_ocean.cs32x15 & global_with_exf
202      - keep the old version of FREEZE for backward compatibility;
203        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
204      - corresponding modifs for TAF directives
205    o added surface flux output variables to TIMEAVE_STATVARS
206    o time-averaged output for pkg/ptracers
207    o fix problem with ECCO-related divided adjoint
208      snapshot file was missing some ad-variables,
209      but no warning issued by TAF
210    
211    checkpoint52a_pre
212    o some bug fixes for #undef REAL4_IS_SLOW
213    
214    checkpoint52 = ecco_c52_e35
215    o after testing adjoints of checkpoint51u_post
216    
217    checkpoint51u_post
218    o this is the post-merge tag of the ecco-branch
219      (needs another clean checkout and re-testing)
220    o various natl_box_adjoint configs and results
221      but no input fields
222    o obcs adjoint not yet merged!
223    o adding ECCO global 1x1 and 2x2 degree configs
224    o updated/extended some store directives for seaice
225    o pkg/ecco now containes ecco-specific part of cost function
226    o top level routines the_main_loop, forward_step
227      supersede those in model/src/
228      previous input data.cost now in data.ecco
229      (new namelist ecco_cost_nml)
230    o in ctrl/ cleaned some cross-dependencies and updated CPP options
231    
232    checkpoint51t_post
233    o this is the pre-merge tag of the ecco-branch
234    
235    checkpoint51s_post
236    o cleanup: removed various obsolete #define-s
237    o pkg/grdchk
238      - renamed 'ph-grd 3' to 'grad-res'
239      - merged from ecco-branch
240        (remaining bug fixes for obcs gradient checks)
241      - additional high-precision output for testreport
242        (grep for 'precision_grdchk_result')
243    
244    checkpoint51r_post
245    o cleaned up or removed CPP_OPTIONS.h files
246    o updated results for some of the tests to reflect the new
247      optfiles (-ieee: -O0 instead of -O3)
248    
249    checkpoint51q_post
250    o cd_code:
251      - moved cd_scheme.F -> cd_code_scheme.F
252      - separate read_checkpoint from cd_code_ini_vars.F
253      - separated cd_code part from write_checkpoint
254      - updated AD_SOURCE, generated .flow
255      - added CD_CODE_VARS.h to the_main_loop
256      - Moving cd_code specific store dir.s to pkg/cd_code
257    o ctrl package totally restructured
258      - pack/unpack now optional and decoupled from
259        xx_/adxx_ I/O
260      - ctrl_pack/unpack cleaned
261        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
262      - confined inclusion of AD_CONFIG.h to where necessary.
263    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
264    
265    checkpoint51p_post
266    o create initial cd_code package
267      - WARNING: the initialization of fields within packages
268        is broken because INI_FIELDS (where READ_CHECKPOINT is
269        called) is called *before* PACKAGES_INIT_VARIABLES.
270        This seems to be backwards since
271        1) its important to initially zero the entire field including
272           the "halo" region
273        2) zeroing needs to be done *before* reading pickup info
274           and the pickup call might or might not happen in any
275           particular run
276      - this needs an overhaul for R2
277    o cleanup verification/*/code/GMREDI_OPTIONS.h
278    o cleanup testreport
279    
280    checkpoint51o_post
281    o bringing AD-related verif's up to date with genmake2
282      - carbon/
283      - global_ocean.90x40x15/
284      - hs.94.1x64x5/
285      - (front_relax/ )
286    o (more) consistent directory structure for AD-related verif.'s
287    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
288    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
289    o bug fix in find_alpha.F for MDJWF:
290      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
291        change rho -> rho-rhoConst
292      - replace call find_rho to find_rhonum
293    o initialisation of rFlx extended to full array (required by TAF)
294      and shifted to thermodynamics
295    o removed PTRACERS.h in ptracers routine
296    o added surfacetendencyPtr to S/R parameter list pracers_forcing
297    o Correcting initialisations for fVerU, fVerV.
298    o helping TAF to recognize dependency on kUp for
299      fVerU, fVerV
300    o Replacing delZ by delR in pkg/ctrl/
301    checkpoint51o_pre
302    
303    o undid all of cp51 pending some cleanups and discussion
304    o added the [#include "AD_CONFIG.h"] statement to all files that need
305       it for adjoint/tl #defines
306     o re-worked the build logic in genmake2 to support AD_CONFIG.h
307     o removed tools/genmake since it no longer works
308    
309    checkpoint51n_post
310    o modifications to make FREEZE flux visible to pkg/kpp
311      - moved surfaceTendencyTice from pkg/seaice to main code
312      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
313      - subroutine FREEZE now limits only surface temperature
314        (this means new output.txt for global_ocean.90x40x15,
315         global_ocean.cs32x15, and global_with_exf)
316    o added surface flux output variables to TIMEAVE_STATVARS
317    
318    checkpoint51n_pre
319    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
320    o added [#include "AD_CONFIG.h"] to all files that use the following
321      defines:
322      - ALLOW_ADJOINT_RUN
323      - ALLOW_TANGENTLINEAR_RUN
324      - ALLOW_ECCO_OPTIMIZATION
325    
326    checkpoint51m_post
327    o incorporating changes to get TAMC/TAF working in genmake2
328      - added new TAMC/TAF targets to the Makefile
329      - various cleanups related to package handling
330      - these changes should have no impact on the forward model
331    
332    checkpoint51l_post
333    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
334     - faster algorithm for cal_addtime.F
335     - higher precision arithmetic, where needed
336     - pkg/exf *startdate variables changed from calendar date to
337       model integration time
338    
339    checkpoint51l_pre
340    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
341    o enable to apply restoring on S & T only in a latitude band.
342    o update output (external_forcing_surf modif. change truncation errors)
343       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
344    
345    checkpoint51k_post
346    o change default to: useNHMTerms=.FALSE.
347     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
348       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
349     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
350        exp1, ideal_2D_oce
351     - change data file of oceanic exp (leave the results unchanged for now)
352       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
353    o set gravitySign automatically according to the vertical coordinate used
354      (and change sign: back to "logical" value: +1 when R increases downward)
355    o added an include barrier to the default CPP_OPTIONS.h and
356      removed the #include "PACKAGES_CONFIG.h" from it
357    o fix a bug in mom_fluxform (from chk51j_post)
358    
359    checkpoint51j_post
360    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
361    o adjusted some flow directives (dynamics, thermodynamics)
362    o added cubed-sphere case to test cost function
363    o heckpoint_lev?_directives.h now include
364      pkg-specific directives, whenever those are enabled.
365    o Moving pkg-specific flow directives to corresponding pkg
366      Moving pkg-specific differentiation list to corresponding pkg
367      Moving pkg-specific checkpoint-lev storing to corresponding pkg
368      ---> conventions are
369           - pkg_ad.flow
370           - pkg_ad_diff.list
371           - pkg_ad_check_lev?_dir.h
372    
373    checkpoint51i_post
374    o merge of the branch-genmake2
375      - knowingly breaks the older genmake
376      - automatic generation of all ALLOW_${PKG_NAME} defines
377      - new testreport supersedes older testscript
378    o large number of package inclusion and header cleanups
379    checkpoint51i_pre
380    
381    o new output for adjoin of global ocean vector invariant
382    o fix for checkpoint of thermodynamic seaice and bulk_force
383    o Steph gchem various cleanups
384    
385    checkpoint 51h_pre
386    o fixed some single quotes
387    o modify gchem pkg to be more versatile
388    o modifications to clean up dic pkg
389    o add pkg/cfc
390    
391    checkpoint51g_post
392    o provide links for ARPACK and ADM*TLM
393    o start removing verification/vero/
394    o update AD-related stuff
395      (in particular some IF-statements in model/src/ routines)
396    o adding to verification/global_ocean.90x40x15/ adjoint of
397      vector invariant setup
398    
399    checkpoint51f_post
400    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
401    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
402      of tracer Green's fucntions for ocean inversion project.
403    
404    checkpoint51f_pre
405    o Added on-the-fly spatial interpolation capability
406        "USE_EXF_INTERPOLATION" to pkg/exf.
407      - This is a temporary Cartesian-grid hack until
408        the super-duper ESMF coupler becomes available.
409      - See verification/global_with_exf/README for usage example.
410      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
411        flags and modified pkg/seaice accordingly.
412    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
413        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
414        non-local transport term.
415    
416    checkpoint51e_post
417    o pkg/mom_vecinv:
418      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
419      - add time-ave diagnostic of vorticity advection.
420    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
421    o atmospheric geopotential: - include water vapor effect;
422                                - use p^kappa in p* scaling.
423    o land pkg: read initial state from files.
424    o AIM : add stratospheric drag in the upper level
425    
426    checkpoint51d_post
427    o change function ILNBLNK (=> last non-blank char.) to return zero
428      (instead of the string length) when the string. char is empty
429    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
430    o modif's to restore TAMC compatibility
431      - avoid "_d" constructs in PARAMETER declarations
432      - avoid interrupting lines by comment lines
433    o Use cluster local disks for purely local I/O
434      vs. globally visible disks needed for ctrl stuff
435      (merged from ecco-branch)
436      - new active_file_loc... and mdsio_..._loc routines
437      - affected packages: autodiff, ctrl, grdchk, mdsio
438    
439    checkpoint51c_post
440    o introducing integer flag debugLevel
441      - debLevZero: suppress all output
442      - debLevA: standard
443      - debLevB: equivalent to current debugMode=.TRUE.
444    o introducing pathname variable mdsioLocalDir for mdsio
445      that can be specified at runtime
446      (relevant for cluster I/O to local disk)
447    `
448    >>>checkpoint51b_post
449    adjoint of ptracers
450    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
451    o extended state in checkpoint_lev?, etc.
452    o alternative ctrl/cost with tr1 or ptracer
453    o new comlev1_bibj_ptracers
454    o new ptracers.flow
455    o made ptracers_forcing same as external_forcing_s
456    o added verification for adjoint with ptracers
457      - adm. grdchk fail so far
458      - tlm. grdchk OK
459      - checked tapelev/comlev recomputations: OK
460    <<<checkpoint51b_pre
461    
462    checkpoint51a_post
463    o added code for biogeochemistry package
464      - new pkgs: dic, gchem
465      - new subroutine in ptracers
466    o modify code for biogeo packages
467      - in model/src and pkg/ptracers
468    
469    checkpoint51
470    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
471      - autodiff, ctrl, exf, grdchk, seaice
472      kept separate packages
473      - cost, ecco, obcs
474    o updating verification/internal_wave, verification/lab_sea
475      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
476    
477    checkpoint50i_post
478    o Preparing next differentiable checkpoint and sync
479      of MAIN vs. ecco-branch
480      - 1st step: this one is differentiable
481      - 2nd step: next(! not this) checkpoint will have updated packages
482                  from ecco-branch)
483    
484    checkpoint50h_post
485    o new package "land": provide surface BC for AIM.
486    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
487    o AIM: use true log-P extrapolation for near surface temp (= as in
488        F.Molteni paper) ; update aim.5l_cs output.
489    o New variable in PARM03 for more flexible pickups
490    o somewhat cleaned package initialisation sequence for
491      ctrl/ cost/ ecco/ in packages_... routines
492    
493    checkpoint50g_post
494    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
495      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
496      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
497        made the default because of faster convergence than ADI
498    
499    checkpoint50f_post
500    o exf totally restructured
501      - replaced all exf_set_ routines by one generic exf_set_gen.F
502        and made sure it's still differentiable
503      - split exf_getffields.F into new exf_bulkformulae.F
504      - exf_inscal_/exf_outscal_ suffixes consistent with field names
505      - updated adjoint/makefile and relevant verif. accordingly
506    
507    checkpoint50f_pre
508     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
509          + change Evap over land. (update aim.5l_cs output)
510     o added missing .cvsignores and made uniform across expts
511     o changed configuration of tidal_basin_2d expt
512     o added pkg/debug functions for tracing code in fatal crashes
513     o tidied pkg/monitor to use MONITOR_OPTIONS.h
514     o new fn in pkg/monitor to stop model if solution grows too big
515     o removed lots of single quotes from comments
516    
517    checkpoint50e_post
518    o make KPP work with PTRACERS
519     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
520       nearly a copy of kpp_transport_s
521     - there is no analogue to SurfaceTendencyS, so I have to use
522       gPtr(of the surface layer) instead
523    o add a new platform SunFire+mpi (SunFire 15000) to genmake
524    checkpoint50e_pre
525    
526    checkpoint50d_post
527    o change kpp output from multiple-record state files to single-record state
528      files analogous to write_state.F
529    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
530      analogous to the cg2d-related output.
531    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
532      so that writing to internal file fn (with length 512) fails.
533    checkpoint50d_pre
534    
535    checkpoint50c_post
536    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
537    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
538    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
539    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
540    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
541    
542    checkpoint50c_pre
543    Merging from release1_p13:
544    o bug fix for pkg/seaice dynamic solver
545    o Added SEAICE_initialHEFF to pkg/seaice
546    
547    checkpoint50b_post
548    o store u*,v* in gU,V instead of in guNm1,gvNm1
549    o in order to put the momForcing out of the Adams-Bashforth:
550      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
551      to timestep.F
552    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
553    o re-generate output for highly sensitive test-exp:
554       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
555    
556    checkpoint50b_pre
557    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
558    o corrected CPP option mismatch in exf_Bulk... functions for case
559      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
560    
561    checkpoint50a_post
562    o Bug fix for merging between c50 and KPP.
563      ikey was passed from thermodynamics to kpp_calc via
564      common block rather than being recomputed in kpp_calc,
565      in contradiction with new key itdkey.
566      New key ikppkey created, and tamc.h headers updated.
567    
568    checkpoint50
569    - 2nd step of merge with ecco-branch:
570      merge changes in ecco-branch back into main trunk
571    - bug fix in find_alpha
572    - more storing in gmredi_calc_tensor.F, kpp_routines.F
573    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
574    - merged some sliced AD support routines
575    
576    checkpoint49
577    merged from ecco-branch:
578    o exf:
579      - Enable initialisation of forcing fields to constant
580        (runtime) values.
581      - in exf_getffields.F
582        Reduce i-/j-loop to interior domain, discarding overlaps.
583        That also fixes wrong TAF-key computations for key_1, key_2
584        with bulf formulae.
585      - exf_init.F modify #ifdef for exf_init_evap
586      - exf_getffieldrec.F, ctrl_getrec.F
587        The following INT-usages are not safe:
588          fldsecs  = int(fldsecs/fldperiod)*fldperiod
589          fldcount = int(fldsecs/fldperiod) + 1
590        and were modified.
591    o autodiff: checkpoint_lev...
592      - updated storing for bulk formulae (some arrays were missing)
593      - added state for seaice package
594      - synchronized with main branch
595    o DIVA:
596      Modif.s in
597      - the_main_loop.F
598      - the_model_main.F
599      and added cost_final_restore.F cost_final_store.F
600      o With these changes, it is possible to fully separate
601        the first forward run to compute the cost function (mdthe_main_loop)
602        and adjoint runs over individual DIVA intervals (adthe_main_loop)
603        into separate model executions.
604        This enables better tuning of DIVA to given queue sizes.
605      o Loss of cost function value in consecutive DIVA runs is
606        fixed by storing to 'costfinal' file.
607      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
608        beginning/end of adjoint integration is accounted for.
609      The current changes apply to TAF-1.4.26.
610      TAF has one remaining bug, requiring one manual change
611      (see MITgcm manual).
612    o cal: synchronized between MAIN and ecco-branch
613    
614    checkpoint48i_post
615    o Changes to restore differentiability of code w.r.t. previous tag
616      (mostly adding new routines to make list and replacing
617      pressure by totPhiHyd).
618    o Updated and merged grdchk package
619      - has both ADM and TLM checks
620      - works for single- and multi-proc.
621      - output cleaned
622      - worked successfully for parallel DIVA
623    o genmake:
624      - Adding -platform=SP4
625      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
626    o Modif. for DIVA:
627      ctrl_unpack should not be called in intermediate DIVA interval.
628      (similar thing would apply for active files such as
629      tbar, sbar, psbar, which should not be reinitialised;
630      only relevant for ecco-branch)
631    
632    checkpoint48h_post
633    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
634    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
635    o Added SEAICE_initialHEFF to pkg/seaice
636    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
637    
638    checkpoint48g_post
639    --- EOS:
640    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
641      store total Potential in totPhyHyd for diagnostics & EOS.
642    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
643    --- Pressure/geopotential gradient:
644    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
645    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
646      ( changes results of global_ocean_pressure )
647    o NLFS + z-coord.: add eta*Rho' contribution.
648    o accurate phiHyd when using interface-W at the middle between 2 centers
649     ( changes results of ideal_2D_oce )
650    o includes r* 2nd term in potential gradient.
651    
652    checkpoint48f_post
653    Merging from release1_p12:
654    o Modifications for using pkg/exf with pkg/seaice
655      - improved description of the various forcing configurations
656      - added basic radiation bulk formulae to pkg/exf
657      - units/sign fix for evap computation in exf_getffields.F
658      - updated verification/global_with_exf/results/output.txt
659    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
660      (SBO) core products, including oceanic mass, center-of-mass,
661      angular, and bottom pressure (see pkg/sbo/README.sbo).
662    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
663      to avoid negative values in shallow regions.
664      - updated verification/natl_box/results/output.txt
665      - updated verification/lab_sea/results/output.txt
666    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
667    o Added useSingleCpuIO option (see PARAMS.h).
668    o Updated useSingleCpuIO option in mdsio_writefield.F to
669      work with multi-field files, e.g., for single-file pickup.
670    o pkg/seaice:
671      - bug fix in growth.F: QNET for no shortwave case
672      - added HeffFile for specifying initial sea-ice thickness
673      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
674    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
675      kpp_transport_t.F, forward_step.F, and the_main_loop.F
676    o pkg/seaice:
677      - adjoint-friendly modifications
678      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
679    
680    checkpoint48e_post
681    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
682    o dynamics: change definition of computational domain & adapt mom_fluxform
683      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
684    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
685        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
686        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
687        global_ocean.90x40x15 global_with_exf global_ocean_pressure
688        inverted_barometer solid-body.cs-32x32x1
689      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
690    
691    checkpoint48d_post
692    o in preparation for r*:
693     a) use pre-computed gradient of hydrostatic potential:
694        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
695     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
696        => affects results of glob_oce_pressure (different truncation error)  
697      update output.txt of ideal_2D_oce & global_ocean_pressure
698    
699    checkpoint48d_pre
700    o in preparation for r*:
701      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
702      pass the 2 comp. of the grad. as arguments to momentum S/R.
703      but for the moment, only used if it does not change the results.
704    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
705    
706    checkpoint48c_post
707    Modifications in treatment of initial flux forcing controls
708    to avoid extra storing of flux fields.
709    
710    checkpoint48c_pre
711    o Added tidal_basin_2d experiment (currently 1D!)
712    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
713    
714    checkpoint48b_post
715    o r* coordinate added in #ifdef NONLIN_FRSURF block.
716     (modification to pressure gradient not yet implemented)
717    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
718      (for U & V) that are used for vertical advection of momentum.
719    
720    checkpoint48a_post
721    o In preparation for r*, use temp. array to compute vertical transport
722       in flux-form momentum pkg. => change results of few test-exp.
723      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
724                        lab_sea, natl_box & plume_on_slope
725    
726    checkpoint48
727    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
728    
729    checkpoint47j_post
730    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
731    o moved adexch from forward_step to addummy_in_stepping
732    o added exch in ctrl_map_...
733    o aveFreq.=0. at end of cost_final to avoid overwrite in
734      reverse checkpointing loop
735    o Yet more changes in gmredi:
736      * adgmredi_calc_tensor
737        avoiding all recomputation of gmredi_slope_limit
738      * adgmredi_x/y/rtransport
739        added flag for excessive storing to avoid recomp. of
740        u/v/rtans, dTdx/y/z
741        -> this is not really necessary and very memory-consuming
742      * adgmredi_slope_psi:
743        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
744      * gmredi_slope_limit
745        re-activated full calculation of taperfct for case 'ac02'
746    o updating verification/ adjoints of carbon, global_ocean.90x40x15
747    
748    checkpoint47i_post
749    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
750    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
751      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
752    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
753    o gmredi: fix few bugs.
754    
755    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
756    This will be a good checkpoint to plug into the ecco-branch.
757    o few modif.'s to get latest version adjointed
758      (mainly kick out code in ini_linear_phisurf)
759    o modif's to run adjoint with exactConserv
760    o case GM_BOLUS_ADVEC should be cleaned
761      S/R gmredi_slope_psi should be cleaned
762    o verification/carbon now has exactConserv=.TRUE.
763    
764    checkpoint47g_post
765    o time-average AIM output: becomes independent from statvars time-average
766      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
767    o After TAF bug fix:
768      Tested adjoint of gmredi package.
769      Tests were done with checkpoint47 rather than with latest
770      checkpoint47f_post since the latter is broken for the adjoint
771      verification/carbon/ contains both ADM and TLM gradient checks.
772    Here they are, before they get changed/lost/stolen.
773    Mostly modif.'s to fix numerical sensitivities.
774    Gradient checks OK for
775    - GM_taper_scheme:
776      * clipping
777      * ac02
778      * linear
779      * glw91
780      * dm95
781      * ldd97
782    - GMREDI_OPTIONS:
783      * GM_VISBECK_VARIABLE_K
784      * GM_NON_UNITY_DIAGONAL
785      * GM_EXTRA_DIAGONAL
786      * GM_BOLUS_ADVEC
787    in conjunction with data.gmredi parameters to be checked in
788    in a few minutes under verification/carbon/code/
789    
790    checkpoint47f_post
791    Merging from release1_p10:
792    o modifications for using pkg/exf with pkg/seaice
793      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
794        and SEAICE_EXTERNAL_FLUXES
795      - pkg/exf CPP options EXF_READ_EVAP and
796        EXF_NO_BULK_COMPUTATIONS
797      - usage examples are Experiments 8 and 9 in
798        verification/lab_sea/README
799      - verification/lab_sea default experiment now uses
800        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
801    
802    checkpoint47e_post
803    o created a tag prior to creating a branch
804    
805    checkpoint47d_post
806    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
807      at the bottom boundary had an erroneous half slip boundary condition
808    o added bottom drag and no slip boundary condition capabilities to
809      oceanic pressure coordinates code
810    o added new verification experiment global_ocean_pressure, this experiment is
811      also described in the tutorial section of the manual
812    checkpoint47d_pre
813    
814    checkpoint47c_post
815    o Added a verification experiment for a global cubed-sphere ocean run
816      -  verification/global_ocean.cubed32x32x30
817      -  uses pkg/therm_seaice and pkg/bulk_forcing
818    
819    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
820    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
821      when using P-coordinate; only implemented for atmospheric config.
822    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
823      NOTES: requires option NONLIN_FRSURF to be "#define".
824    o update advect_xz/results/output.txt (left from checkpoint44g_post)
825    
826    checkpoint47b_post
827    Merging from release1_p9:
828    o pkg/seaice
829      - removed GOTO's and added taf directives
830      - double precision constants to reduce the g77 (Linux)
831        to F77 (SGI) differences reported in release1_p8
832    o tools/genmake
833      - added SGI options
834    o verification/testscript
835      - updated to that of checkpoint47a_post
836    o verification/global_ocean.90x40x15/input/eedata
837      - modified for SGI f77 compatibility
838    o verification/lab_sea
839      - added description of sea-ice model
840      - added missing matlab routines
841      - added test of thermodynamics parallelization
842    
843    checkpoint47a_post
844    o new pkg: aim_v23
845     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
846       for now, keep the same surface forcing as before.
847     - Part-Cell implemented into AIM; check that Heat & Water are conserved
848     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
849     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
850    o add diagnostic of surface correction term in monitor output
851    
852    o bulk_force and therm_seaice
853    - Two packages:  bulk_force (Bulk forcing)
854      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
855    - Earlier integration from Stephaine Dutkiewicz
856      and Patrick Heimbach.
857    - Two ifdef statements for compile time,
858       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
859    
860    checkpoint47
861    differentiable version of checkpoint46n_post
862    o bug fix in quasihydrostaticterms
863    o * "clean" adjoint code (in terms of extensive recomputations)
864        can now be obtained for all GMREDI options (i.e. for
865        - GM_VISBECK_VARIABLE_K
866        - GM_NON_UNITY_DIAGONAL
867        - GM_EXTRA_DIAGONAL
868        - GM_BOLUS_ADVEC )
869      * However, wrong gradient check problem remains unsolved.
870      * New CPP options have been introduced for different
871        tapering schemes
872    o external_fields_load now part of differentiation list
873    o pressure needs multiple storing;
874      would be nice to have store_pressure at beginning or
875      end of forward_step, e.g. by having phiHyd global (5-dim.)
876      (NB: pressure is needed for certain cases in find_rho,
877      which is also invoked through convective_adjustment).
878    o recomputations in find_rho for cases
879     'JMD95'/'UNESCO' or 'MDJWF' are OK.
880    o #define ATMOSPHERIC_LOADING should be differentiable
881    o ini_forcing shifted to begining of initialise_varia
882    o Incorporating QNVS line search routines into MITgcm
883      (this is separate code, and therefore not under pkg)
884      lsopt/, optim/
885    o Updated verification/carbon/
886      - #define GM_VISBECK_VARIABLE_K
887      - GM_taper_scheme    = 'ldd97'    
888    
889    checkpoint46n_post
890    Merging from release1_p8:
891    o verification/natl_box:
892      updating new external_fields_load routine
893    o New package: pkg/seaice
894      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
895      The sea-ice code is based on Hibler (1979-1980).
896      Two sea-ice dynamic solvers, ADI and LSR, are included.
897      In addition to computing prognostic sea-ice variables and diagnosing
898      the forcing/external data fields that drive the ocean model,
899      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
900      The implied surface heat flux is then stored in variable
901      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
902      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
903      non-local transport term.  Because this call precedes model
904      thermodynamics, temperature under sea-ice may not be "exactly" at
905      the freezing point by the time theta is dumped or time-averaged.
906      N.B.: fairly large differences in accuracy occur across
907            different platforms/compilers; comparison between
908            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
909            generated output gives:
910       T           S           U           V
911      C D M    c        m  s        m  s        m  s        m  s
912      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
913      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
914      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
915    
916      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
917    o GAD:
918      - generated new common blocks to account for call of
919        same gad routines with differing traceridentities
920        (needed to modify tracerIdentity indices in GAD.h)
921      - generated separate common blocks for case useCubedSphereExchange
922        (Department of Futurology)
923      - parameter lists to gmredi_?transport: added tracerIdentity
924      - added new key indices to tamc.h
925    o external_fields_load:
926      - added this routine to TAF list
927      - needed to make some common blocks global and additional storing
928        along the same lines as exf package (checkpoint_lev?_directives.h)
929    o exf:
930      updated external forcing package
931      - bug fixes carried over from ecco-branch
932        (missing OBCS_OPTIONS.h in two routines)
933      - enable easy to use "no forcing".
934      - added exf I/O for atmospheric loading
935      - added exf I/O for runoff data
936      - transfered scaling between exf <-> MITgcm to exf namelist
937    o Adding new verification experiment global_with_exf.
938      This verification experiment is almost identical to the
939      global_ocean.90x40x15 experiment, except that it uses
940      the exf (and cal) package instead of the
941      external_fields_load routine (cf README file).
942    
943    checkpoint46m_post
944    o modified testscript to return -- when there are no lines of "%MON" output
945    o added new flag "quasiHydrostatic" for QH mode
946      and new routine quasihydrostaticterms()
947    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
948      New routine: mom_u_coriolis_nh()
949    o fixed sign of non-hydrostatic metric terms in u and v equations.
950      Depend on correct sign of gravitySign.
951    o added work.pc* to .cvsignore in aim directories using ifc
952    o introduced flag for controllin non-hydrostatic metric terms
953    o removed gravitySign from PARM04
954    o switched to g77/ifc from pgf77 in aim experiments
955    
956    checkpoint46l_post
957    o made convective adjustment work with pressure coordinates:
958     - changed the direction of k-loop in convective_adjustment.F for the
959       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
960     - adjusted the reference pressure k-index in convective_adjustment.F
961     - adjusted the convection condition in convect.F (in analogy to
962       calc_ivdc.F)
963     - convective_adjustment no longer computes anything on the halos
964     - removed the warnings about negative salinity from find_rho.F and
965       find_alpha.F; instead the new routine look_for_neg_salinity, called
966       at the beginning of find_rho, find_alpha, and find_beta, does a
967       check of the entire slice, if CPP-option
968       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
969    checkpoint46l_pre
970    
971    checkpoint46k_post
972    o fixed the verification/global_ocean.90x40x15 experiment:
973     - new bathymetry (the world according to A., JMC, and M.)
974     - new initial fields and forcing fields (*.bin files)
975     - new POLY3.COEFFS (for the next release one should switch to a full
976       equation of state: JMD95P or MDJWF)
977     - fixed several errors and redundancies in the data file
978     - experiment uses looped cells
979     - added matlab directory with diagnostic scripts for plotting of output
980    
981    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
982     - read AIM physics parameters from a file (data.aimphys)
983     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
984    
985    checkpoint46j_post
986    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
987    o move wVel computation at the end of the time step, in S/R integr_continuity
988    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
989    o update timeave pkg for wVel diagnostic.
990    checkpoint46j_pre
991    
992    checkpoint46i_post
993    o Clean up AIM package (and keep the results unchanged):
994      include CPP_OPTION and use IMPLICT NONE in all routines ;
995      declare all the variables _RL ; use _d 0 for all numerical constants.
996      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
997    
998    checkpoint46h_post
999    o cleaned up the use of rhoNil and rhoConst.
1000      - rhoNil should only appear in the LINEAR equation of state, everywhere
1001        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1002        and the dynamical equations are all divided by rhoConst
1003    o introduced new parameter rhoConstFresh, a reference density of fresh
1004      water, to remove the fresh water flux's dependence on rhoNil. The default
1005      value is 999.8 kg/m^3
1006    o cleanup up external_forcing.F and external_forcing_surf.F
1007      - can now be used by both OCEANIC and OCEANICP
1008    checkpoint46h_pre
1009    
1010     Added code to convert surface volume flux (fresh water) into
1011     a mass flux when using P coordinates in the ocean (OCEANICP).
1012     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1013    
1014    checkpoint46g_post
1015    o Include a new diagnostic variable phiHydLow for the ocean model
1016      - in z-coordinates, it is the bottom pressure anomaly
1017      - in p-coordinates, it is the sea surface elevation
1018      - in both cases, these variable have global drift, reflecting the mass
1019        drift in z-coordinates and the volume drift in p-coordinates
1020      - included time averaging for phiHydLow, be aware of the drift!
1021    o depth-dependent computation of Bo_surf for pressure coordinates
1022      in the ocean (buoyancyRelation='OCEANICP')
1023      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1024        Theta, Salinity, and Pressure in the parameter list. This routine is
1025        presently contained in find_rho.F. This routine does not give the
1026        correct density for 'POLY3', which would be a z-dependent reference
1027        density.
1028    o cleaned up find_rho
1029      - removed obsolete 'eqn' from the parameter list.
1030    o added two new verification experiments: gop and goz
1031      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1032    checkpoint46g_pre
1033    
1034    checkpoint46f_post
1035    o Enable tangent linear (forward mode) gradient checks:
1036      - extended active file handling to g_... files
1037      - added TANGENT_SIMULATION to theSimulationMode
1038      - extended grdchk package accordingly
1039    o added tangent linear setup in verification/carbon/code_ftl
1040    o added adjoint setup in verification/front_relax/code_ad
1041    
1042    checkpoint46e_post
1043    o Added new equation of state -> MDJWF
1044      - EOS of McDougall et al., 2002, JAOT, submitted
1045      - caveat: the equation of state is only valid for a smaller (more
1046        realistic?) range of values than JMD95P/Z and UNESCO
1047      - added masks to the calculation of pressure in store_pressure
1048      - added more check values for density in check_eos (ini_eos.F), some of
1049        the old check values are out of the range of the MDJWF-eos, so don't
1050        expect perfect matches for those
1051    checkpoint46e_pre
1052    
1053    checkpoint46d_post
1054    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1055      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1056      case of pressure coordinates. eosType='JMD95Z' in
1057      combination with buoyancyRelation='OCEANICP' now causes an error.
1058    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1059      in find_alpha/beta.
1060    checkpoint46d_pre
1061    
1062    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1063      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1064    
1065    checkpoint46c_post
1066    o Changes necessary for ocean in p-coordinates
1067     -  Added new buoyancy relation = 'OCEANICP'
1068     -  Added new parameters = gravitySign (this used to be contained inside
1069        the factor dRdZ which I added when we first switched to R coordinates).
1070     X GM/Redi is not compatible (yet)
1071     X bottom drag and no-slip need to be debugged.
1072    checkpoint46c_pre
1073    
1074    checkpoint46b_post
1075    o Added new equation of state -> JMD95Z and JMD95P
1076      - EOS of Jackett and McDougall, 1995, JAOT
1077      - moved all EOS parameters into EOS.h
1078      - new routines ini_eos.F, store_pressure.F
1079    o Added UNESCO EOS, but not recommended because it requires
1080      in-situ temperature (see JMD95)
1081    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1082      unesco.f to be used with POLY3
1083    checkpoint46b_pre
1084    
1085    checkpoint46a_post
1086    o Added (atmospheric) pressure loading
1087      - new field in FFIELDS.h, etc...
1088      - new cpp flag ATMOSPHERIC_LOADING
1089    o Changed hFacC to _hFacC in calc_phi_hyd.F
1090    o Added SHORTWAVE_HEATING to some files for consistency
1091    checkpoint46a_pre
1092    
1093    checkpoint46
1094    further merges from release1_p5
1095    o new ctrl package
1096      - adopted from ECCO environment to enable optimization
1097      - added Eliassen Palm fluxes to controls
1098    o added Eliassen Palm flux controls to gradient check package
1099    o cost package
1100      - Compatible with new ctrl package
1101      - added Eliassen Palm cost hooks
1102      - modif's of existing cost functions
1103    o Adjoint-related bug fixes in kpp:
1104      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1105      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1106    o autodiff package
1107      - flow directives:
1108        + new for S/R do_the_model_io
1109        + enhanced for S/R checkpoint
1110        + new gmredi.flow
1111      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1112        disable adcommon.h/g_common.h by default.
1113      - fixed problem for adjoint of global_max
1114    o modified verification/carbon/
1115    o New setup for adjoint of global_ocean
1116    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1117    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1118    o incorporated hooks for sponge layer code (external_forcing.F)
1119    
1120    checkpoint45d_post
1121    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1122    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1123      (affects plume_on_slope "cg2d" output)
1124    o add new parameter deltaTfreesurf for free-surface time stepping
1125    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1126    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1127    o change phiMin in exp1 (to agree with documentation)
1128    o add new flags:
1129     - T,S forcing inside/outside Adams-Bashforth
1130     - turn off temp,salt advection and/or forcing
1131     - for each tracer, define internal flag for multiDimAdvection & A-B
1132    o monitor: change definition of KE to check conservation of Energy
1133    
1134    checkpoint45c_post
1135    o Removed f90 comments ("!")
1136    o Modified initialisations to enable exf package for MITgcm
1137      (without invoking ECCO_PACKAGE).
1138    o modifications to gradient check package (Martin Losch)
1139      - enable centered differences
1140      - modified format of standard output
1141    
1142    checkpoint45b_post
1143    o cleaned exchange calls in cg2d
1144    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1145    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1146      to configure barotropic setup (Martin Losch)
1147    o moved some initialisations within bi,bj loop in dynamics
1148      (TAF flow dependency)
1149    o in initialise_varia, moved call packages_init_variables
1150      before convective_adjustment_init
1151      (corresponding adjustment of TAF tape initialisation).
1152    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1153    
1154    checkpoint45a_post
1155    o compute Rho over the whole domain (extend iMin,jMin indices)
1156    o specific exchange for X-slice domain (case Ny=1)
1157    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1158    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1159    
1160    checkpoint44h_post = checkpoint45
1161    o Fix to restore differentiability:
1162      place at which packages_init_variables is called in
1163      initialise_varia is crucial for reverse control flow.
1164    o modifications in GMRedi to enable stable adjoint
1165      (corresponding modif's in thermodynamics, dynamics)
1166    o added missing hook for sponge layer code in external_forcing
1167    o modified test cost functions
1168    o storing in gad_advection (plus removal of write(0,*)!
1169    o missing headers TR1.h added in convective_adjustment routines
1170    o errorMessageUnit set non-equal zero in eeboot
1171      (conflict on some platforms, e.g. IBM SP3)
1172    o modified carbon verif.
1173    
1174    checkpoint44h_pre
1175    o vertical grid option: allow to put the Interface at the middle between
1176      2 cell-centers ; replace delZ in pkg/kpp by drF.
1177    o GM Advective form: Tracers are advected using the residual transport (=
1178      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1179    
1180    checkpoint44g_post
1181    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1182      results) ; ifdef missing in thermodynamics.F
1183    
1184    checkpoint44f_pre,checkpoint44f_post
1185    o added PTRACERS package
1186      This allows an arbitrary number of passive tracers to be integrated
1187      forward simultaneously with the dynamicaly model.
1188      + Implemented so far:
1189        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1190        - I/O and checkpointing
1191        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1192      + Not implemented so far:
1193        - KPP
1194        - OBCS
1195      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1196        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1197        line in data.pkg.
1198      + This package is disabled by default since it increases storage.
1199    
1200    
1201    o testscript: added -cleanup option
1202    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1203                 b) enable to filter 2D fields.
1204    
1205    checkpoint44e_pre,post
1206    o re-wrote convective adjustment to use pre-calculated weights
1207      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1208      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1209      Original calls to convect() still in place.
1210    
1211    chkpt44d_pre,post
1212    o added missing EXCLUDE_MONITOR flags
1213    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1214      (incompatible typ in MIN/MAX expressions caused problems
1215      on IBM SP3)
1216    o in genmake added variable MAKEDEPEND
1217      plus resetting for case SunOS
1218    o added timer_stats.c routine for IBM SP3
1219    o removed variables in dynamics
1220    !!! I forgot to create tag chkpt44d_pre !!!
1221    !!! But chkpt44d_pre = chkpt44c_post    !!!
1222    
1223    o real fresh water flux implemented with non-linear free-surface.
1224    
1225    chkpt44c_pre,post
1226    o few fix (mask in shap_s2, EmPmR in external_field_load,
1227      USE_NATURAL_BCS in solve_for_P);
1228    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1229    
1230    checkpoint44b_pre/_post
1231    o merge of relevant stuff from the ecco-branch:
1232      - genmake: removed $S64 overwrite for case SunOS
1233      - pkg/exf: update and corrections for field swapping and obcs
1234      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1235                  harmonized between ECCO and MITgcm
1236      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1237                      updated checkpointing_lev... lists for obcs
1238      - model/src: minor changes in forward_step, plot_field
1239                   added directive for divided adjoint in the_main_loop
1240      - pkg/mdsio: added mdsio_gl_slice
1241    
1242    o check parameters & config (chkpt44a_pre,post)
1243    o OBC and NonLin_FrSurf.
1244    
1245    checkpoint44
1246    o fix bug in mom_vi_del2uv
1247    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1248    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1249    o update AIM experiments (NCEP input files)
1250    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1251    o added some stuff for AD
1252    
1253    checkpoint43
1254    o added two new advection tests
1255    o added global 4x4 degree ocean test
1256    o added test of H&S94 with free surface on cube
1257    o some final mods for gradient check, adjoint,...
1258    
1259    checkpoint42
1260      Fixed AD-related problems:
1261    o Store directives up-to-date with re-arranged Adams-Bashforth
1262      (mainly thermodynamics.F)
1263    o New store directives for multi-dim. advection schemes
1264      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1265      * new common block and key passkey
1266      (mainly gad_advection.F)
1267    o Modified store directives for split of dynamics/thermodynamics
1268      for the case ALLOW_KPP
1269    o Cleaned argument list for timestep_tracer.F
1270    
1271    checkpoint41
1272    o re-formatted/added comments in prologues of key subroutines
1273      to work with protex
1274    
1275    checkpoint40
1276    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1277    o added FLT (floats) package from Arne along with demo. experiment
1278    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1279      implementation of forward-in-time forcing terms
1280    o more mods for non-linear free-surface including new variable
1281    o modified multi-dim method to work on cube
1282    o bug fix in KPP (from DM)
1283    
1284    checkpoint40pre9
1285    o added DST advection schemes
1286    o fix MPI bug on SGI's
1287    o modifications for non-linear free-surface
1288    o fixed conditionals for fixed flow/passive tracer only mode
1289    o added tension/strain form of stress tensor
1290    o changes to commenting of arguments for TAF/TAMC
1291    o added/updated many matlab scripts
1292    o added multi-dimensional advection method for tracers
1293      
1294    checkpoint40pre8
1295    o new package rw/
1296      Added method for dumping intermediate local arrays:
1297      mdsio_writetile - same as mdsio_writefield except works from inside
1298                        bi,bj loop
1299      mdsio_writelocal - same as mdsio_writetile except works for local
1300                         arrays
1301      write_local_r? - higher-level wrapper for mdsio_writelocal
1302      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1303      Example given at end of mom_vecinv.F that dumps some local arrays.
1304    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1305      control flux-form versus vector invariant code.
1306      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1307      or genmake -DISABLE ...
1308    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1309      (additional storing is now needed for case vecinv;
1310      currently nothing implemented to switch this storing off
1311      in case fluxform is used since no CPP flag available).
1312    
1313    checkpoint40pre7
1314    o bug fix in dynamics.F
1315      calc_viscosity called before k=1,Nr loop.
1316    o added some #ifdef's ALLOW_PASSIVE_TRACER
1317    o cleaned initialisations in ctrl_map_ini
1318      related to TAF
1319    
1320    checkpoint40pre6
1321    o split dynamics into thermodynamics & dynamics
1322    o corresponding split of calc_diffusivity into
1323      calc_diffusivity, calc_viscosity
1324      (kpp_calc_diff, kpp_calc_visc).
1325    o Added diffkr, kapgm to control variables
1326    o bug fix in gmredi_slope_limit for ldd97
1327    
1328    checkpoint40pre5
1329    o proper initialization of Adams-Bashforth time stepping
1330      + uses forward step for very first step of model (iter=0)
1331    o re-generated *all* output since almost all output is modified by this
1332      change (sorry but we've been putting this one off for about 2 years)
1333      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1334        *not* regenerated since they are already out of date and I don't
1335        want to create the impression that they are suddenly working.
1336    o removed KAP stuff for DEC's
1337    o modified/added many .cvsignore files in */code and */input
1338    o added new expt "solid-body.cs-32x32x1"
1339      + this uses an alternative form of ini_curvilinear_grid.F which
1340        is not necessarily any better than the current one...
1341    
1342    checkpoint40pre4
1343    o added re-initialisations of utrans,vtrans,rtrans in
1344      calc_common_factors which are crucial for TAF.
1345    o extended iMin,jMin range for calc_common_factors,
1346      calc_diffusivity
1347    o added option ALLOW_PASSIVE_TRACER
1348    o a few minor updates and fixes
1349    
1350    checkpoint40pre3
1351    o created calc_gtr1.F for gad package
1352    o split the_main_loop and re-introduced forward_step
1353    o some recomputations of nIter0 for TAMC
1354    
1355    checkpoint40pre2
1356    o Updated to latest branch of AJA, JMC
1357    o Added gradient check package
1358    o Added routines for passive tracer handling
1359    o Added carbon sequestration sensitivity experiment
1360    
1361    checkpoint39
1362     o Modifications and fixes to support TAMC
1363       (mainly missing or wrong directives)
1364     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1365       in addummy_in_stepping
1366     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1367     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1368     o Included following packages:
1369       cal: calendar
1370       exf: external forcing
1371       ecco: essential routines to control use of cal, exf
1372             (NB: this is not the full ECCO environment)
1373     o disabled some packages by default in genmake
1374    
1375    checkpoint38
1376     o see notes_c37_adj.txt
1377     o corrected wrong layer index in external_forcing_t
1378     o replaced the_main_loop/forward_step by the_main_loop
1379     o removed forceoutput from write_state
1380       (replaced criteria for initial/final state)
1381     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1382    
1383    checkpoint37
1384     o mdsio.F routine split and packaged in pkg/mdsio
1385       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1386        used unless genmake -disable=mdsio)
1387     o allow a more precise surface-geopotential gradient for the atmosphere
1388       taking into account the change in space of Alpha (=1/rho) at the surface.
1389     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1390       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1391     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1392       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1393       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1394     o Time-Average diagnostics defined as a pseudo package "timeave".
1395     o pickup files : old pickup (before c35) did not work with new code (c35
1396       and after) unless activating 2 commented lines in initialise-varia.
1397     o Non-Hydrostatic pickup file Pb fixed.
1398     o bug with Rigid-lid version (since c35) fixed.  
1399    
1400    checkpoint36
1401     o implement Crank-Nickelson barotropic time-stepping
1402     o recover Time-Average diagnostics
1403     o fix Pb in checkpoint (PR#19)
1404     o AIM become a standard package ; clean unused CPP_kees
1405    
1406    checkpoint35
1407     o subtantial rewrite of dynamics.f
1408     o allows staggered time-stepping
1409     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1410     o added bottom drag (linear + quadratic)
1411    
1412    checkpoint34
1413     o Modified exchange routines for correct reverse simulation.
1414     o Added verification output to comply with bug fix in impldiff.F
1415       as of c33 (exp2, natl_box).
1416     o Corrected store directives in dynamics.F
1417     o Corrected array boundaries in impldiff.F
1418     o Corrected array dimensions in gmredi.
1419       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1420     o Added routine GLOBAL_SUM_INT to global_sum.F
1421     o Added mdsio_gl.F for ECCO purposes.
1422    
1423    checkpoint33
1424     o Fixed bug in lower BC in impldiff.F
1425     o Fixed confusion about units of forcing arrays in FFIELDS.h
1426       namely Fu,Fv,Qnet,Qsw,EmPmR:
1427       - Removed verification/natl_box/code/external_fields_scale.F
1428         (did not differ from that in model/src)
1429       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1430         (see FFIELDS.h for description)
1431       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1432         kpp_calc.F and kpp_transport_t.F
1433       - Removed model/src/external_fields_scale.F and calls to it
1434       - verification/natl_box uses flux data with "atmospheric" sign so
1435         a special version of external_fields_load.F is used to
1436         change the data as it's read in. This way, the arrays
1437         have the right units and signs at all times tha a user could
1438         possibly use them.
1439     o Corrected genmake to delete a temporary file during configuration
1440    
1441    checkpoint32
1442     o Scaling of forcing fields moved from external_forcing.F to
1443       external_fields_scale.F, called directly after loading fields.
1444     o Surface relaxation terms added to surface tendency fields in
1445       extra subroutine.
1446     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1447       fields.
1448     o Changes in GMRedi to comply with packaging structure.
1449     o Modifications and bug fixes in KPP package.
1450     o Verification experiment for KPP added (verification/nat_box/)
1451    
1452    checkpoint31
1453     o Packages interface brought in line with defined standard
1454       -> new routines packages_...F
1455       -> changes in initialise_fixed.F, initialise_varia.F
1456       -> enables initialisation interface for ECCO package
1457     o Rescaling of external forcing fields immediately after read
1458       (removed from external_forcing.F)
1459       -> new: surface_fields_scale.F
1460       -> affects ini_foorcing.F, external_fields_load.F
1461     o Computation of surface tendencies before tendency updates.
1462       -> new: external_forcing_surf.F
1463     o Change of variable names useGMRedi, useKPP, useECCO
1464     o Further changes in dynamics.F, impldiff.F for TAMC
1465     o Tested for experiments 0, 2, 4.
1466       - not yet tested for GMRedi.
1467       - not yet tested for KPP.
1468    
1469    checkpoint30
1470     o Updates for OBCs
1471     o New experiment for test OBCs (internal_wave)
1472     o New output.txt in verification/exp4/results/
1473     o Updates for KPP: calculation of viscosity corrected, new variables
1474       kpp_dumpFreq and kpp_taveFreq
1475     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1476       and entry for T90 in genmake
1477    
1478    checkpoint29
1479     o packaged KPP and GM/Redi
1480    
1481    checkpoint28
1482     o Corrected initialization of hFacMin for difference vertical coordinates
1483     o Modified calculation of partial cell thickness to more robust algorithm
1484     o config_summary.F: replaced write_1D_... by write_0D_...
1485       read_write.F: added subroutines write_0D_...
1486     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1487       included some initialisations required for TAMC.
1488     o routine calc_isoslopes: modified sqrt computation to make it
1489       differentiable for zero argument.
1490     o routines dynamics, impldiff:
1491       included store directives and tape key computations required for TAMC.
1492     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1493    
1494    checkpoint27
1495     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1496       formulation works properly with variable resolution.
1497     o restructured the calling tree between the_model_main() and dynamics()
1498     o split initialise() into initialise_fixed() and initialise_varia()
1499     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1500       in new routine ini_psurf()
1501    
1502    checkpoint26
1503     o moved some #ifdef in optional routines to encompass everything
1504       except the argument declarations. This was using up some memory.
1505     o fixed macros like _ADT to work with both versions of Linux cpp
1506     o cleaned up some unused and uninitialized variables
1507       (helps when debugging with strict compile options)
1508     o split up CPP_EEOPTIONS.h into options and macros
1509       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1510     o patch for 2 processor JAM mode
1511    
1512    checkpoint25
1513     o updates for OBCs and NH
1514     o dramatically reduced memory usage
1515     o added "JAM" routines for use on Artic network
1516     o parameterization of convection by implicit vertical diffusion
1517     o added a diagnostic of convective index
1518     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1519       (this is was partly for OBCs and NH but also in anticipation of
1520        an explicit free-surface option)
1521     o initial state input files for U and V
1522    
1523    checkpoint24
1524     o Removed some spurious "REAL"s
1525     o Updated KPP to latest version from JPL
1526     o Added a COS(latitude) in horizontal viscosity
1527    
1528    checkpoint23
1529     o Added del^4 diffusion for salt and temperature
1530     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1531    
1532    checkpoint22
1533     o Made many small changes: implicit none, format(i5), etc...
1534     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1535    
1536    checkpoint21
1537     o Introduced new I/O package that supports direct-access records (mdsio.F)
1538     o Split-up mid-level I/O routines
1539     o Updated input data for experiments 0,1,2,4 and 5
1540     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1541    
1542    checkpoint20
1543     o Tidied up open-boundaries some more
1544     o Added non-hydrostatic code
1545     o Fixed some input data
1546     o Modified MPI start-up to work in "coupled" context.
1547    
1548    checkpoint19
1549     o Tidied up directory structure for verification experiments.
1550     o Added new code for open boundaries.
1551     o Corrected advective terms near boundaries.
1552     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1553     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1554     o Split default parameters out of ini_parms.F into set_defaults.F.
1555    
1556    checkpoint18
1557     o Further changes for optional code generation with
1558       CPP - ugh!
1559    
1560    checkpoint17
1561     o Beginning to incorporating modularity
1562       for supporting atmos. and ocean configs.
1563     o Small changes for TAMC complinace
1564     o New ultra simple test case. Barotropic box
1565       configuration "exp0".
1566    
1567    checkpoint16
1568     o Minor changes to exchange routines to support
1569       accumulation in reverse mode. Adjoint of an
1570       assignment is an addition.
1571     o Changes to support compilation by TAMC (LR(1)
1572       syntax) and by g77 under Linux ( 72 character
1573       limit ).
1574    
1575    checkpoint15
1576     Rewrote exchange routines to allow
1577     o General tile <-> tile connectivity.
1578     o TAMC reverse mode flag ( is this really needed? )
1579     o Variable width overlap and exchange region widths.
1580     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1581       shmput/shmget, VIA, SYSV shmem and every other cool
1582       communication method.
1583    
1584    checkpoint14
1585     Consistent isomorphism chages made. These allow dynamical core
1586     to support both pressure and meters as a vertical coordinate.
1587    
1588    checkpoint13
1589     Release which corrects global_max problem and a couple
1590     of KGM time-averaging diagnostic errors. Also contains
1591     a double-gyre experiment setup as well as the baseline
1592     4 degree global template. The double gyre template is
1593     organised to allow it to be applied automatically to
1594     the baseline configuration.
1595    
1596    branch-point-rdot
1597     A few tidy-ups have been made bt the real point of this
1598     check-point (excuse the pun) is to allow a branch to be
1599     made for the purposes of adding the rDot alterations.
1600     I don't want to commit the rDot to the main-trunk until
1601     we've actually tested it...
1602    
1603    checkpoint12
1604     Tidy up and added generic genmake script (formerly
1605     configure script).
1606     Released to testers.
1607    
1608  checkpoint11  checkpoint11
1609   Re-arranged initialise() and introduced ini_vertical_grid()   Re-arranged initialise() and introduced ini_vertical_grid()
1610   and ini_masks_etc().   and ini_masks_etc().

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