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revision 1.17 by cnh, Mon Nov 30 16:46:45 1998 UTC revision 1.278 by jmc, Sun Apr 18 21:43:24 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52m_post
7    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
8      this does not change any of the results, because myIter=0 in swfrac always
9      lead to jwtype=2 (the default anyway), but the call makes little sense
10      as a default
11    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
12    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
13      atmospheric model (AIM) to use it ; add a "slab ocean" component.
14    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
15    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
16    o extending useSingleCpuIO option to work with new exch2 I/O format
17      - old-style, missing-tile I/O is still accessible by defining CPP
18        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
19    o monitor package can write to NetCDF files and/or STDOUT
20    o fix re-definition bug in MNC_GRID_INIT_ALL()
21    o doc/api_reference added
22      - a framework for building an API Reference Manual using all
23        the "protex" comments embedded in the code
24      - see pkg/generic_advdiff, pkg/mnc for examples
25    o MNC:
26      - make myThid the last argument for all subroutines
27      - new default for the grid files: NO halos
28      - add useMNC and other run-time flags
29      - separate per-file-group handling of the unlimited dimension
30      - early initialization of MNC w/ flags read at the eeboot stage
31        and lookup tables set in initialize_fixed
32      - write all MNC output to a freshly-created directory
33    o thermodynamics sea-ice (thsice) is now tested with testreport.
34    o test exp. advect_cs: use the standard cs32 grid ; update output.
35    o Added functionality to grdchk:
36      pick global i,j,k position (or nearest wet) where to perform check.
37    
38    checkpoint52l_post
39    o new land formulation:
40      a) use ground enthalpy as prognostic variable to ensure exact
41         energy conservation.
42      b) account for water temperature and for latent heat of freezing
43         in all processes (rain, run-off, ground storage)
44      c) compute surface and ground temperature implicitly.
45    o aim_v23 modification for new land model:
46      a) Treat separately land / ocean / sea-ice surface fluxes
47         to allow implicit computation of land & sea-ice surface temp.
48      b) add snow precipitation.
49    checkpoint52l_pre
50    
51    o fix problem (when 1 tile is empty) in min/max monitor.
52    o fix bug in timeAve (u,vZetatave in common block)
53    o no restoring terms under ice for pkg/seaice
54    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
55    o bug fix for pkg/seaice pickups
56    o change MNC call locations and add coordinate attributes
57    o mask vorticity at the corner ; affects global_ocean.cs output
58    o fix ini_curvilinear_grid ; test CS experiments with mpi
59    o aim.5l_cs: modify sea-ice fraction input file ; update output
60    o exf: Adding simple range check routine for exf fields after read
61    
62    checkpoint52k_post
63    o removed top-level directory "diags"
64      - we migrated these functions to pkg/timeave a long time ago
65    o fixed bug introduced in pkg/monitor
66    o accuracy ctrlprec = 32 insuffient for gradient checks using
67      averaged fields (I/O via cost_averages)
68      -> use ctrl.h in active_file*.F to control I/O precision.
69    o paramter list of CALL ADTHE_MAIN_LOOP
70    o added initial do_the_model_io to ecco
71    o set all ...Freq to zero after cost_final
72      taveFreq, dumpFreq, pChkptFreq
73    o MAIN and ECCO differentiability restored
74    
75    checkpoint52j_post
76    o fix nchklev in tamc.h for global_ocean...
77    o Bringing flow and store directives up-to-date
78    o Really weird thing!
79      call do_the_model_io from the_main_loop with parameters
80      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
81      TAF places a faulty re-call of initialise_varia
82      after cost_final call which should not be there!
83    checkpoint52j_pre
84    
85    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
86      error messages
87    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
88    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
89      debug output
90    o modfied mdsio_writefield.F to handle non-global files under exch2
91    o update AIM Cubed-Sphere exp (aim.5l_cs):
92      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
93    o update AIM Equatorial Channel exp:
94      use standard aim_v23 pkg and change the SST fields to be more realistic.
95    o globalFile now works with exch2
96    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
97      mon_vort3.F to make exch2 friendly with >1 tile per cube face
98    o limit timeave output for hi-res integrations
99    
100    checkpoint52i_post
101    o removed CPP_EEOPTIONS.h from verification/*/code
102    o updated the tiling for global_ocean_pressure
103    checkpoint52i_pre
104    
105    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
106      the old pkg/aim).
107    
108    checkpoint52h_pre
109    o shortened offending lines in exch2_send_rx?.template
110    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
111    o genmake2: add build & execute test for NetCDF code
112    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
113      old grid files, moved CPP_EEMACROS.h to pkg/exch2
114    o added useSingleCPUIO flag to monitor.F and mon_out.F
115    o added temporary hack for sea-ice dynamics on the cube:
116      metric terms are ignored and it is assumed that
117      there is no sea-ice on cube faces 1, 2, 4, and 5.
118    
119    checkpoint52f_post
120    o added exch2 cube routines to pkg/exch2
121    o modified hs94.cs-32x32x5 to use it
122    o added new grid files to hs94.cs-32x32x5
123    checkpoint52f_pre
124    
125    checkpoint52e_post
126    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
127      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
128    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
129      to work with implicit vertical advection and AB ;
130    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
131    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
132     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
133    checkpoint52e_pre
134    
135    o fix bug in impldiff when Nr=1 or Nr=2.
136    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
137    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
138    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
139      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
140    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
141    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
142    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
143    
144    checkpoint52d_post
145    o re-tiled many expts to allow comparison in multi-processor mode
146      - updated output accordingly
147      - changed hs94.128x64x5 to use intial T from file rather than use the
148        random number generator
149    o add infrastructure in model routines for fizhi and gridalt packages
150    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
151    o changes to permit hi-res, cubed-sphere, configuration
152      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
153      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
154      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
155        of surface winds for the cube
156      (A verification experiment, based on global_ocean.cs32x15, but with
157       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
158       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
159       complete with example surface forcing files and matlab scripts to look
160       at the output and compare it with that of global_ocean.cs32x15.)
161    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
162       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
163       to conform to the common rule.
164    o check-in the first version of the coupler + interfaces for multi-components
165       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
166       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
167       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
168       - ocean and atmos. share the same horizontal grid (no interpolation).
169       - exchanges between component and coupler is done in forward_step
170    o new verification experiment, cpl_aim+ocn:
171       coupled ocean - AIM atmosphere on cs32 grid.
172    
173    checkpoint52d_pre
174    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
175    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
176    
177    checkpoint52c_post
178    o Fixing OPTIONS files for use of exf:
179      - ALLOW_ECCO not needed
180      - ECCO_CPPOPTIONS.h should not be included from
181        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
182        as has been the case in the past
183      - All cal/exf related options are currently set in
184        single header file. Should remain so until we
185        agree on a consistent new policy.
186    o Removed all CPP options for cal package.
187      cal has no more CPP options.
188    o modified STOREs in GAD_ADVECTION
189    o corrected key comp. for passkey
190    
191    checkpoint52b_post
192    o new version: "thsice" of thermodynamic sea-ice pkg:
193     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
194     - modify fluxes but do not change theta directly;
195     - light cleaning of bulk_force pkg (still needed with thsice).
196     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
197       + output_thsice.txt to test thsice & bulk_force pkgs.
198    o put back grid & coriolis monitor output.
199    checkpoint52b_pre
200    
201    o call "do_the_model_io" at the beginning (=> dump initial state)
202    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
203    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
204      (need info on NUMBER_OF_PTRACERS)
205    o missing PTRACERS headers in some routines
206    o default tamc.h in pkg/autodiff supposed to crash
207      to ensure proper customization
208    
209    checkpoint52a_post
210    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
211      - moved surfaceTendencyTice from pkg/seaice to main code
212      - subroutine FREEZE_SURFACE now limits only surface temperature
213        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
214        => new output.txt for global_ocean.cs32x15 & global_with_exf
215      - keep the old version of FREEZE for backward compatibility;
216        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
217      - corresponding modifs for TAF directives
218    o added surface flux output variables to TIMEAVE_STATVARS
219    o time-averaged output for pkg/ptracers
220    o fix problem with ECCO-related divided adjoint
221      snapshot file was missing some ad-variables,
222      but no warning issued by TAF
223    
224    checkpoint52a_pre
225    o some bug fixes for #undef REAL4_IS_SLOW
226    
227    checkpoint52 = ecco_c52_e35
228    o after testing adjoints of checkpoint51u_post
229    
230    checkpoint51u_post
231    o this is the post-merge tag of the ecco-branch
232      (needs another clean checkout and re-testing)
233    o various natl_box_adjoint configs and results
234      but no input fields
235    o obcs adjoint not yet merged!
236    o adding ECCO global 1x1 and 2x2 degree configs
237    o updated/extended some store directives for seaice
238    o pkg/ecco now containes ecco-specific part of cost function
239    o top level routines the_main_loop, forward_step
240      supersede those in model/src/
241      previous input data.cost now in data.ecco
242      (new namelist ecco_cost_nml)
243    o in ctrl/ cleaned some cross-dependencies and updated CPP options
244    
245    checkpoint51t_post
246    o this is the pre-merge tag of the ecco-branch
247    
248    checkpoint51s_post
249    o cleanup: removed various obsolete #define-s
250    o pkg/grdchk
251      - renamed 'ph-grd 3' to 'grad-res'
252      - merged from ecco-branch
253        (remaining bug fixes for obcs gradient checks)
254      - additional high-precision output for testreport
255        (grep for 'precision_grdchk_result')
256    
257    checkpoint51r_post
258    o cleaned up or removed CPP_OPTIONS.h files
259    o updated results for some of the tests to reflect the new
260      optfiles (-ieee: -O0 instead of -O3)
261    
262    checkpoint51q_post
263    o cd_code:
264      - moved cd_scheme.F -> cd_code_scheme.F
265      - separate read_checkpoint from cd_code_ini_vars.F
266      - separated cd_code part from write_checkpoint
267      - updated AD_SOURCE, generated .flow
268      - added CD_CODE_VARS.h to the_main_loop
269      - Moving cd_code specific store dir.s to pkg/cd_code
270    o ctrl package totally restructured
271      - pack/unpack now optional and decoupled from
272        xx_/adxx_ I/O
273      - ctrl_pack/unpack cleaned
274        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
275      - confined inclusion of AD_CONFIG.h to where necessary.
276    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
277    
278    checkpoint51p_post
279    o create initial cd_code package
280      - WARNING: the initialization of fields within packages
281        is broken because INI_FIELDS (where READ_CHECKPOINT is
282        called) is called *before* PACKAGES_INIT_VARIABLES.
283        This seems to be backwards since
284        1) its important to initially zero the entire field including
285           the "halo" region
286        2) zeroing needs to be done *before* reading pickup info
287           and the pickup call might or might not happen in any
288           particular run
289      - this needs an overhaul for R2
290    o cleanup verification/*/code/GMREDI_OPTIONS.h
291    o cleanup testreport
292    
293    checkpoint51o_post
294    o bringing AD-related verif's up to date with genmake2
295      - carbon/
296      - global_ocean.90x40x15/
297      - hs.94.1x64x5/
298      - (front_relax/ )
299    o (more) consistent directory structure for AD-related verif.'s
300    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
301    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
302    o bug fix in find_alpha.F for MDJWF:
303      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
304        change rho -> rho-rhoConst
305      - replace call find_rho to find_rhonum
306    o initialisation of rFlx extended to full array (required by TAF)
307      and shifted to thermodynamics
308    o removed PTRACERS.h in ptracers routine
309    o added surfacetendencyPtr to S/R parameter list pracers_forcing
310    o Correcting initialisations for fVerU, fVerV.
311    o helping TAF to recognize dependency on kUp for
312      fVerU, fVerV
313    o Replacing delZ by delR in pkg/ctrl/
314    checkpoint51o_pre
315    
316    o undid all of cp51 pending some cleanups and discussion
317    o added the [#include "AD_CONFIG.h"] statement to all files that need
318       it for adjoint/tl #defines
319     o re-worked the build logic in genmake2 to support AD_CONFIG.h
320     o removed tools/genmake since it no longer works
321    
322    checkpoint51n_post
323    o modifications to make FREEZE flux visible to pkg/kpp
324      - moved surfaceTendencyTice from pkg/seaice to main code
325      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
326      - subroutine FREEZE now limits only surface temperature
327        (this means new output.txt for global_ocean.90x40x15,
328         global_ocean.cs32x15, and global_with_exf)
329    o added surface flux output variables to TIMEAVE_STATVARS
330    
331    checkpoint51n_pre
332    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
333    o added [#include "AD_CONFIG.h"] to all files that use the following
334      defines:
335      - ALLOW_ADJOINT_RUN
336      - ALLOW_TANGENTLINEAR_RUN
337      - ALLOW_ECCO_OPTIMIZATION
338    
339    checkpoint51m_post
340    o incorporating changes to get TAMC/TAF working in genmake2
341      - added new TAMC/TAF targets to the Makefile
342      - various cleanups related to package handling
343      - these changes should have no impact on the forward model
344    
345    checkpoint51l_post
346    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
347     - faster algorithm for cal_addtime.F
348     - higher precision arithmetic, where needed
349     - pkg/exf *startdate variables changed from calendar date to
350       model integration time
351    
352    checkpoint51l_pre
353    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
354    o enable to apply restoring on S & T only in a latitude band.
355    o update output (external_forcing_surf modif. change truncation errors)
356       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
357    
358    checkpoint51k_post
359    o change default to: useNHMTerms=.FALSE.
360     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
361       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
362     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
363        exp1, ideal_2D_oce
364     - change data file of oceanic exp (leave the results unchanged for now)
365       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
366    o set gravitySign automatically according to the vertical coordinate used
367      (and change sign: back to "logical" value: +1 when R increases downward)
368    o added an include barrier to the default CPP_OPTIONS.h and
369      removed the #include "PACKAGES_CONFIG.h" from it
370    o fix a bug in mom_fluxform (from chk51j_post)
371    
372    checkpoint51j_post
373    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
374    o adjusted some flow directives (dynamics, thermodynamics)
375    o added cubed-sphere case to test cost function
376    o heckpoint_lev?_directives.h now include
377      pkg-specific directives, whenever those are enabled.
378    o Moving pkg-specific flow directives to corresponding pkg
379      Moving pkg-specific differentiation list to corresponding pkg
380      Moving pkg-specific checkpoint-lev storing to corresponding pkg
381      ---> conventions are
382           - pkg_ad.flow
383           - pkg_ad_diff.list
384           - pkg_ad_check_lev?_dir.h
385    
386    checkpoint51i_post
387    o merge of the branch-genmake2
388      - knowingly breaks the older genmake
389      - automatic generation of all ALLOW_${PKG_NAME} defines
390      - new testreport supersedes older testscript
391    o large number of package inclusion and header cleanups
392    checkpoint51i_pre
393    
394    o new output for adjoin of global ocean vector invariant
395    o fix for checkpoint of thermodynamic seaice and bulk_force
396    o Steph gchem various cleanups
397    
398    checkpoint 51h_pre
399    o fixed some single quotes
400    o modify gchem pkg to be more versatile
401    o modifications to clean up dic pkg
402    o add pkg/cfc
403    
404    checkpoint51g_post
405    o provide links for ARPACK and ADM*TLM
406    o start removing verification/vero/
407    o update AD-related stuff
408      (in particular some IF-statements in model/src/ routines)
409    o adding to verification/global_ocean.90x40x15/ adjoint of
410      vector invariant setup
411    
412    checkpoint51f_post
413    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
414    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
415      of tracer Green's fucntions for ocean inversion project.
416    
417    checkpoint51f_pre
418    o Added on-the-fly spatial interpolation capability
419        "USE_EXF_INTERPOLATION" to pkg/exf.
420      - This is a temporary Cartesian-grid hack until
421        the super-duper ESMF coupler becomes available.
422      - See verification/global_with_exf/README for usage example.
423      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
424        flags and modified pkg/seaice accordingly.
425    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
426        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
427        non-local transport term.
428    
429    checkpoint51e_post
430    o pkg/mom_vecinv:
431      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
432      - add time-ave diagnostic of vorticity advection.
433    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
434    o atmospheric geopotential: - include water vapor effect;
435                                - use p^kappa in p* scaling.
436    o land pkg: read initial state from files.
437    o AIM : add stratospheric drag in the upper level
438    
439    checkpoint51d_post
440    o change function ILNBLNK (=> last non-blank char.) to return zero
441      (instead of the string length) when the string. char is empty
442    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
443    o modif's to restore TAMC compatibility
444      - avoid "_d" constructs in PARAMETER declarations
445      - avoid interrupting lines by comment lines
446    o Use cluster local disks for purely local I/O
447      vs. globally visible disks needed for ctrl stuff
448      (merged from ecco-branch)
449      - new active_file_loc... and mdsio_..._loc routines
450      - affected packages: autodiff, ctrl, grdchk, mdsio
451    
452    checkpoint51c_post
453    o introducing integer flag debugLevel
454      - debLevZero: suppress all output
455      - debLevA: standard
456      - debLevB: equivalent to current debugMode=.TRUE.
457    o introducing pathname variable mdsioLocalDir for mdsio
458      that can be specified at runtime
459      (relevant for cluster I/O to local disk)
460    `
461    >>>checkpoint51b_post
462    adjoint of ptracers
463    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
464    o extended state in checkpoint_lev?, etc.
465    o alternative ctrl/cost with tr1 or ptracer
466    o new comlev1_bibj_ptracers
467    o new ptracers.flow
468    o made ptracers_forcing same as external_forcing_s
469    o added verification for adjoint with ptracers
470      - adm. grdchk fail so far
471      - tlm. grdchk OK
472      - checked tapelev/comlev recomputations: OK
473    <<<checkpoint51b_pre
474    
475    checkpoint51a_post
476    o added code for biogeochemistry package
477      - new pkgs: dic, gchem
478      - new subroutine in ptracers
479    o modify code for biogeo packages
480      - in model/src and pkg/ptracers
481    
482    checkpoint51
483    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
484      - autodiff, ctrl, exf, grdchk, seaice
485      kept separate packages
486      - cost, ecco, obcs
487    o updating verification/internal_wave, verification/lab_sea
488      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
489    
490    checkpoint50i_post
491    o Preparing next differentiable checkpoint and sync
492      of MAIN vs. ecco-branch
493      - 1st step: this one is differentiable
494      - 2nd step: next(! not this) checkpoint will have updated packages
495                  from ecco-branch)
496    
497    checkpoint50h_post
498    o new package "land": provide surface BC for AIM.
499    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
500    o AIM: use true log-P extrapolation for near surface temp (= as in
501        F.Molteni paper) ; update aim.5l_cs output.
502    o New variable in PARM03 for more flexible pickups
503    o somewhat cleaned package initialisation sequence for
504      ctrl/ cost/ ecco/ in packages_... routines
505    
506    checkpoint50g_post
507    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
508      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
509      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
510        made the default because of faster convergence than ADI
511    
512    checkpoint50f_post
513    o exf totally restructured
514      - replaced all exf_set_ routines by one generic exf_set_gen.F
515        and made sure it's still differentiable
516      - split exf_getffields.F into new exf_bulkformulae.F
517      - exf_inscal_/exf_outscal_ suffixes consistent with field names
518      - updated adjoint/makefile and relevant verif. accordingly
519    
520    checkpoint50f_pre
521     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
522          + change Evap over land. (update aim.5l_cs output)
523     o added missing .cvsignores and made uniform across expts
524     o changed configuration of tidal_basin_2d expt
525     o added pkg/debug functions for tracing code in fatal crashes
526     o tidied pkg/monitor to use MONITOR_OPTIONS.h
527     o new fn in pkg/monitor to stop model if solution grows too big
528     o removed lots of single quotes from comments
529    
530    checkpoint50e_post
531    o make KPP work with PTRACERS
532     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
533       nearly a copy of kpp_transport_s
534     - there is no analogue to SurfaceTendencyS, so I have to use
535       gPtr(of the surface layer) instead
536    o add a new platform SunFire+mpi (SunFire 15000) to genmake
537    checkpoint50e_pre
538    
539    checkpoint50d_post
540    o change kpp output from multiple-record state files to single-record state
541      files analogous to write_state.F
542    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
543      analogous to the cg2d-related output.
544    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
545      so that writing to internal file fn (with length 512) fails.
546    checkpoint50d_pre
547    
548    checkpoint50c_post
549    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
550    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
551    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
552    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
553    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
554    
555    checkpoint50c_pre
556    Merging from release1_p13:
557    o bug fix for pkg/seaice dynamic solver
558    o Added SEAICE_initialHEFF to pkg/seaice
559    
560    checkpoint50b_post
561    o store u*,v* in gU,V instead of in guNm1,gvNm1
562    o in order to put the momForcing out of the Adams-Bashforth:
563      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
564      to timestep.F
565    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
566    o re-generate output for highly sensitive test-exp:
567       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
568    
569    checkpoint50b_pre
570    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
571    o corrected CPP option mismatch in exf_Bulk... functions for case
572      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
573    
574    checkpoint50a_post
575    o Bug fix for merging between c50 and KPP.
576      ikey was passed from thermodynamics to kpp_calc via
577      common block rather than being recomputed in kpp_calc,
578      in contradiction with new key itdkey.
579      New key ikppkey created, and tamc.h headers updated.
580    
581    checkpoint50
582    - 2nd step of merge with ecco-branch:
583      merge changes in ecco-branch back into main trunk
584    - bug fix in find_alpha
585    - more storing in gmredi_calc_tensor.F, kpp_routines.F
586    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
587    - merged some sliced AD support routines
588    
589    checkpoint49
590    merged from ecco-branch:
591    o exf:
592      - Enable initialisation of forcing fields to constant
593        (runtime) values.
594      - in exf_getffields.F
595        Reduce i-/j-loop to interior domain, discarding overlaps.
596        That also fixes wrong TAF-key computations for key_1, key_2
597        with bulf formulae.
598      - exf_init.F modify #ifdef for exf_init_evap
599      - exf_getffieldrec.F, ctrl_getrec.F
600        The following INT-usages are not safe:
601          fldsecs  = int(fldsecs/fldperiod)*fldperiod
602          fldcount = int(fldsecs/fldperiod) + 1
603        and were modified.
604    o autodiff: checkpoint_lev...
605      - updated storing for bulk formulae (some arrays were missing)
606      - added state for seaice package
607      - synchronized with main branch
608    o DIVA:
609      Modif.s in
610      - the_main_loop.F
611      - the_model_main.F
612      and added cost_final_restore.F cost_final_store.F
613      o With these changes, it is possible to fully separate
614        the first forward run to compute the cost function (mdthe_main_loop)
615        and adjoint runs over individual DIVA intervals (adthe_main_loop)
616        into separate model executions.
617        This enables better tuning of DIVA to given queue sizes.
618      o Loss of cost function value in consecutive DIVA runs is
619        fixed by storing to 'costfinal' file.
620      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
621        beginning/end of adjoint integration is accounted for.
622      The current changes apply to TAF-1.4.26.
623      TAF has one remaining bug, requiring one manual change
624      (see MITgcm manual).
625    o cal: synchronized between MAIN and ecco-branch
626    
627    checkpoint48i_post
628    o Changes to restore differentiability of code w.r.t. previous tag
629      (mostly adding new routines to make list and replacing
630      pressure by totPhiHyd).
631    o Updated and merged grdchk package
632      - has both ADM and TLM checks
633      - works for single- and multi-proc.
634      - output cleaned
635      - worked successfully for parallel DIVA
636    o genmake:
637      - Adding -platform=SP4
638      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
639    o Modif. for DIVA:
640      ctrl_unpack should not be called in intermediate DIVA interval.
641      (similar thing would apply for active files such as
642      tbar, sbar, psbar, which should not be reinitialised;
643      only relevant for ecco-branch)
644    
645    checkpoint48h_post
646    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
647    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
648    o Added SEAICE_initialHEFF to pkg/seaice
649    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
650    
651    checkpoint48g_post
652    --- EOS:
653    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
654      store total Potential in totPhyHyd for diagnostics & EOS.
655    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
656    --- Pressure/geopotential gradient:
657    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
658    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
659      ( changes results of global_ocean_pressure )
660    o NLFS + z-coord.: add eta*Rho' contribution.
661    o accurate phiHyd when using interface-W at the middle between 2 centers
662     ( changes results of ideal_2D_oce )
663    o includes r* 2nd term in potential gradient.
664    
665    checkpoint48f_post
666    Merging from release1_p12:
667    o Modifications for using pkg/exf with pkg/seaice
668      - improved description of the various forcing configurations
669      - added basic radiation bulk formulae to pkg/exf
670      - units/sign fix for evap computation in exf_getffields.F
671      - updated verification/global_with_exf/results/output.txt
672    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
673      (SBO) core products, including oceanic mass, center-of-mass,
674      angular, and bottom pressure (see pkg/sbo/README.sbo).
675    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
676      to avoid negative values in shallow regions.
677      - updated verification/natl_box/results/output.txt
678      - updated verification/lab_sea/results/output.txt
679    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
680    o Added useSingleCpuIO option (see PARAMS.h).
681    o Updated useSingleCpuIO option in mdsio_writefield.F to
682      work with multi-field files, e.g., for single-file pickup.
683    o pkg/seaice:
684      - bug fix in growth.F: QNET for no shortwave case
685      - added HeffFile for specifying initial sea-ice thickness
686      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
687    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
688      kpp_transport_t.F, forward_step.F, and the_main_loop.F
689    o pkg/seaice:
690      - adjoint-friendly modifications
691      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
692    
693    checkpoint48e_post
694    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
695    o dynamics: change definition of computational domain & adapt mom_fluxform
696      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
697    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
698        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
699        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
700        global_ocean.90x40x15 global_with_exf global_ocean_pressure
701        inverted_barometer solid-body.cs-32x32x1
702      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
703    
704    checkpoint48d_post
705    o in preparation for r*:
706     a) use pre-computed gradient of hydrostatic potential:
707        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
708     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
709        => affects results of glob_oce_pressure (different truncation error)  
710      update output.txt of ideal_2D_oce & global_ocean_pressure
711    
712    checkpoint48d_pre
713    o in preparation for r*:
714      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
715      pass the 2 comp. of the grad. as arguments to momentum S/R.
716      but for the moment, only used if it does not change the results.
717    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
718    
719    checkpoint48c_post
720    Modifications in treatment of initial flux forcing controls
721    to avoid extra storing of flux fields.
722    
723    checkpoint48c_pre
724    o Added tidal_basin_2d experiment (currently 1D!)
725    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
726    
727    checkpoint48b_post
728    o r* coordinate added in #ifdef NONLIN_FRSURF block.
729     (modification to pressure gradient not yet implemented)
730    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
731      (for U & V) that are used for vertical advection of momentum.
732    
733    checkpoint48a_post
734    o In preparation for r*, use temp. array to compute vertical transport
735       in flux-form momentum pkg. => change results of few test-exp.
736      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
737                        lab_sea, natl_box & plume_on_slope
738    
739    checkpoint48
740    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
741    
742    checkpoint47j_post
743    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
744    o moved adexch from forward_step to addummy_in_stepping
745    o added exch in ctrl_map_...
746    o aveFreq.=0. at end of cost_final to avoid overwrite in
747      reverse checkpointing loop
748    o Yet more changes in gmredi:
749      * adgmredi_calc_tensor
750        avoiding all recomputation of gmredi_slope_limit
751      * adgmredi_x/y/rtransport
752        added flag for excessive storing to avoid recomp. of
753        u/v/rtans, dTdx/y/z
754        -> this is not really necessary and very memory-consuming
755      * adgmredi_slope_psi:
756        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
757      * gmredi_slope_limit
758        re-activated full calculation of taperfct for case 'ac02'
759    o updating verification/ adjoints of carbon, global_ocean.90x40x15
760    
761    checkpoint47i_post
762    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
763    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
764      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
765    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
766    o gmredi: fix few bugs.
767    
768    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
769    This will be a good checkpoint to plug into the ecco-branch.
770    o few modif.'s to get latest version adjointed
771      (mainly kick out code in ini_linear_phisurf)
772    o modif's to run adjoint with exactConserv
773    o case GM_BOLUS_ADVEC should be cleaned
774      S/R gmredi_slope_psi should be cleaned
775    o verification/carbon now has exactConserv=.TRUE.
776    
777    checkpoint47g_post
778    o time-average AIM output: becomes independent from statvars time-average
779      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
780    o After TAF bug fix:
781      Tested adjoint of gmredi package.
782      Tests were done with checkpoint47 rather than with latest
783      checkpoint47f_post since the latter is broken for the adjoint
784      verification/carbon/ contains both ADM and TLM gradient checks.
785    Here they are, before they get changed/lost/stolen.
786    Mostly modif.'s to fix numerical sensitivities.
787    Gradient checks OK for
788    - GM_taper_scheme:
789      * clipping
790      * ac02
791      * linear
792      * glw91
793      * dm95
794      * ldd97
795    - GMREDI_OPTIONS:
796      * GM_VISBECK_VARIABLE_K
797      * GM_NON_UNITY_DIAGONAL
798      * GM_EXTRA_DIAGONAL
799      * GM_BOLUS_ADVEC
800    in conjunction with data.gmredi parameters to be checked in
801    in a few minutes under verification/carbon/code/
802    
803    checkpoint47f_post
804    Merging from release1_p10:
805    o modifications for using pkg/exf with pkg/seaice
806      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
807        and SEAICE_EXTERNAL_FLUXES
808      - pkg/exf CPP options EXF_READ_EVAP and
809        EXF_NO_BULK_COMPUTATIONS
810      - usage examples are Experiments 8 and 9 in
811        verification/lab_sea/README
812      - verification/lab_sea default experiment now uses
813        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
814    
815    checkpoint47e_post
816    o created a tag prior to creating a branch
817    
818    checkpoint47d_post
819    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
820      at the bottom boundary had an erroneous half slip boundary condition
821    o added bottom drag and no slip boundary condition capabilities to
822      oceanic pressure coordinates code
823    o added new verification experiment global_ocean_pressure, this experiment is
824      also described in the tutorial section of the manual
825    checkpoint47d_pre
826    
827    checkpoint47c_post
828    o Added a verification experiment for a global cubed-sphere ocean run
829      -  verification/global_ocean.cubed32x32x30
830      -  uses pkg/therm_seaice and pkg/bulk_forcing
831    
832    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
833    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
834      when using P-coordinate; only implemented for atmospheric config.
835    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
836      NOTES: requires option NONLIN_FRSURF to be "#define".
837    o update advect_xz/results/output.txt (left from checkpoint44g_post)
838    
839    checkpoint47b_post
840    Merging from release1_p9:
841    o pkg/seaice
842      - removed GOTO's and added taf directives
843      - double precision constants to reduce the g77 (Linux)
844        to F77 (SGI) differences reported in release1_p8
845    o tools/genmake
846      - added SGI options
847    o verification/testscript
848      - updated to that of checkpoint47a_post
849    o verification/global_ocean.90x40x15/input/eedata
850      - modified for SGI f77 compatibility
851    o verification/lab_sea
852      - added description of sea-ice model
853      - added missing matlab routines
854      - added test of thermodynamics parallelization
855    
856    checkpoint47a_post
857    o new pkg: aim_v23
858     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
859       for now, keep the same surface forcing as before.
860     - Part-Cell implemented into AIM; check that Heat & Water are conserved
861     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
862     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
863    o add diagnostic of surface correction term in monitor output
864    
865    o bulk_force and therm_seaice
866    - Two packages:  bulk_force (Bulk forcing)
867      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
868    - Earlier integration from Stephaine Dutkiewicz
869      and Patrick Heimbach.
870    - Two ifdef statements for compile time,
871       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
872    
873    checkpoint47
874    differentiable version of checkpoint46n_post
875    o bug fix in quasihydrostaticterms
876    o * "clean" adjoint code (in terms of extensive recomputations)
877        can now be obtained for all GMREDI options (i.e. for
878        - GM_VISBECK_VARIABLE_K
879        - GM_NON_UNITY_DIAGONAL
880        - GM_EXTRA_DIAGONAL
881        - GM_BOLUS_ADVEC )
882      * However, wrong gradient check problem remains unsolved.
883      * New CPP options have been introduced for different
884        tapering schemes
885    o external_fields_load now part of differentiation list
886    o pressure needs multiple storing;
887      would be nice to have store_pressure at beginning or
888      end of forward_step, e.g. by having phiHyd global (5-dim.)
889      (NB: pressure is needed for certain cases in find_rho,
890      which is also invoked through convective_adjustment).
891    o recomputations in find_rho for cases
892     'JMD95'/'UNESCO' or 'MDJWF' are OK.
893    o #define ATMOSPHERIC_LOADING should be differentiable
894    o ini_forcing shifted to begining of initialise_varia
895    o Incorporating QNVS line search routines into MITgcm
896      (this is separate code, and therefore not under pkg)
897      lsopt/, optim/
898    o Updated verification/carbon/
899      - #define GM_VISBECK_VARIABLE_K
900      - GM_taper_scheme    = 'ldd97'    
901    
902    checkpoint46n_post
903    Merging from release1_p8:
904    o verification/natl_box:
905      updating new external_fields_load routine
906    o New package: pkg/seaice
907      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
908      The sea-ice code is based on Hibler (1979-1980).
909      Two sea-ice dynamic solvers, ADI and LSR, are included.
910      In addition to computing prognostic sea-ice variables and diagnosing
911      the forcing/external data fields that drive the ocean model,
912      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
913      The implied surface heat flux is then stored in variable
914      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
915      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
916      non-local transport term.  Because this call precedes model
917      thermodynamics, temperature under sea-ice may not be "exactly" at
918      the freezing point by the time theta is dumped or time-averaged.
919      N.B.: fairly large differences in accuracy occur across
920            different platforms/compilers; comparison between
921            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
922            generated output gives:
923       T           S           U           V
924      C D M    c        m  s        m  s        m  s        m  s
925      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
926      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
927      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
928    
929      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
930    o GAD:
931      - generated new common blocks to account for call of
932        same gad routines with differing traceridentities
933        (needed to modify tracerIdentity indices in GAD.h)
934      - generated separate common blocks for case useCubedSphereExchange
935        (Department of Futurology)
936      - parameter lists to gmredi_?transport: added tracerIdentity
937      - added new key indices to tamc.h
938    o external_fields_load:
939      - added this routine to TAF list
940      - needed to make some common blocks global and additional storing
941        along the same lines as exf package (checkpoint_lev?_directives.h)
942    o exf:
943      updated external forcing package
944      - bug fixes carried over from ecco-branch
945        (missing OBCS_OPTIONS.h in two routines)
946      - enable easy to use "no forcing".
947      - added exf I/O for atmospheric loading
948      - added exf I/O for runoff data
949      - transfered scaling between exf <-> MITgcm to exf namelist
950    o Adding new verification experiment global_with_exf.
951      This verification experiment is almost identical to the
952      global_ocean.90x40x15 experiment, except that it uses
953      the exf (and cal) package instead of the
954      external_fields_load routine (cf README file).
955    
956    checkpoint46m_post
957    o modified testscript to return -- when there are no lines of "%MON" output
958    o added new flag "quasiHydrostatic" for QH mode
959      and new routine quasihydrostaticterms()
960    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
961      New routine: mom_u_coriolis_nh()
962    o fixed sign of non-hydrostatic metric terms in u and v equations.
963      Depend on correct sign of gravitySign.
964    o added work.pc* to .cvsignore in aim directories using ifc
965    o introduced flag for controllin non-hydrostatic metric terms
966    o removed gravitySign from PARM04
967    o switched to g77/ifc from pgf77 in aim experiments
968    
969    checkpoint46l_post
970    o made convective adjustment work with pressure coordinates:
971     - changed the direction of k-loop in convective_adjustment.F for the
972       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
973     - adjusted the reference pressure k-index in convective_adjustment.F
974     - adjusted the convection condition in convect.F (in analogy to
975       calc_ivdc.F)
976     - convective_adjustment no longer computes anything on the halos
977     - removed the warnings about negative salinity from find_rho.F and
978       find_alpha.F; instead the new routine look_for_neg_salinity, called
979       at the beginning of find_rho, find_alpha, and find_beta, does a
980       check of the entire slice, if CPP-option
981       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
982    checkpoint46l_pre
983    
984    checkpoint46k_post
985    o fixed the verification/global_ocean.90x40x15 experiment:
986     - new bathymetry (the world according to A., JMC, and M.)
987     - new initial fields and forcing fields (*.bin files)
988     - new POLY3.COEFFS (for the next release one should switch to a full
989       equation of state: JMD95P or MDJWF)
990     - fixed several errors and redundancies in the data file
991     - experiment uses looped cells
992     - added matlab directory with diagnostic scripts for plotting of output
993    
994    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
995     - read AIM physics parameters from a file (data.aimphys)
996     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
997    
998    checkpoint46j_post
999    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1000    o move wVel computation at the end of the time step, in S/R integr_continuity
1001    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1002    o update timeave pkg for wVel diagnostic.
1003    checkpoint46j_pre
1004    
1005    checkpoint46i_post
1006    o Clean up AIM package (and keep the results unchanged):
1007      include CPP_OPTION and use IMPLICT NONE in all routines ;
1008      declare all the variables _RL ; use _d 0 for all numerical constants.
1009      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1010    
1011    checkpoint46h_post
1012    o cleaned up the use of rhoNil and rhoConst.
1013      - rhoNil should only appear in the LINEAR equation of state, everywhere
1014        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1015        and the dynamical equations are all divided by rhoConst
1016    o introduced new parameter rhoConstFresh, a reference density of fresh
1017      water, to remove the fresh water flux's dependence on rhoNil. The default
1018      value is 999.8 kg/m^3
1019    o cleanup up external_forcing.F and external_forcing_surf.F
1020      - can now be used by both OCEANIC and OCEANICP
1021    checkpoint46h_pre
1022    
1023     Added code to convert surface volume flux (fresh water) into
1024     a mass flux when using P coordinates in the ocean (OCEANICP).
1025     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1026    
1027    checkpoint46g_post
1028    o Include a new diagnostic variable phiHydLow for the ocean model
1029      - in z-coordinates, it is the bottom pressure anomaly
1030      - in p-coordinates, it is the sea surface elevation
1031      - in both cases, these variable have global drift, reflecting the mass
1032        drift in z-coordinates and the volume drift in p-coordinates
1033      - included time averaging for phiHydLow, be aware of the drift!
1034    o depth-dependent computation of Bo_surf for pressure coordinates
1035      in the ocean (buoyancyRelation='OCEANICP')
1036      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1037        Theta, Salinity, and Pressure in the parameter list. This routine is
1038        presently contained in find_rho.F. This routine does not give the
1039        correct density for 'POLY3', which would be a z-dependent reference
1040        density.
1041    o cleaned up find_rho
1042      - removed obsolete 'eqn' from the parameter list.
1043    o added two new verification experiments: gop and goz
1044      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1045    checkpoint46g_pre
1046    
1047    checkpoint46f_post
1048    o Enable tangent linear (forward mode) gradient checks:
1049      - extended active file handling to g_... files
1050      - added TANGENT_SIMULATION to theSimulationMode
1051      - extended grdchk package accordingly
1052    o added tangent linear setup in verification/carbon/code_ftl
1053    o added adjoint setup in verification/front_relax/code_ad
1054    
1055    checkpoint46e_post
1056    o Added new equation of state -> MDJWF
1057      - EOS of McDougall et al., 2002, JAOT, submitted
1058      - caveat: the equation of state is only valid for a smaller (more
1059        realistic?) range of values than JMD95P/Z and UNESCO
1060      - added masks to the calculation of pressure in store_pressure
1061      - added more check values for density in check_eos (ini_eos.F), some of
1062        the old check values are out of the range of the MDJWF-eos, so don't
1063        expect perfect matches for those
1064    checkpoint46e_pre
1065    
1066    checkpoint46d_post
1067    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1068      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1069      case of pressure coordinates. eosType='JMD95Z' in
1070      combination with buoyancyRelation='OCEANICP' now causes an error.
1071    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1072      in find_alpha/beta.
1073    checkpoint46d_pre
1074    
1075    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1076      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1077    
1078    checkpoint46c_post
1079    o Changes necessary for ocean in p-coordinates
1080     -  Added new buoyancy relation = 'OCEANICP'
1081     -  Added new parameters = gravitySign (this used to be contained inside
1082        the factor dRdZ which I added when we first switched to R coordinates).
1083     X GM/Redi is not compatible (yet)
1084     X bottom drag and no-slip need to be debugged.
1085    checkpoint46c_pre
1086    
1087    checkpoint46b_post
1088    o Added new equation of state -> JMD95Z and JMD95P
1089      - EOS of Jackett and McDougall, 1995, JAOT
1090      - moved all EOS parameters into EOS.h
1091      - new routines ini_eos.F, store_pressure.F
1092    o Added UNESCO EOS, but not recommended because it requires
1093      in-situ temperature (see JMD95)
1094    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1095      unesco.f to be used with POLY3
1096    checkpoint46b_pre
1097    
1098    checkpoint46a_post
1099    o Added (atmospheric) pressure loading
1100      - new field in FFIELDS.h, etc...
1101      - new cpp flag ATMOSPHERIC_LOADING
1102    o Changed hFacC to _hFacC in calc_phi_hyd.F
1103    o Added SHORTWAVE_HEATING to some files for consistency
1104    checkpoint46a_pre
1105    
1106    checkpoint46
1107    further merges from release1_p5
1108    o new ctrl package
1109      - adopted from ECCO environment to enable optimization
1110      - added Eliassen Palm fluxes to controls
1111    o added Eliassen Palm flux controls to gradient check package
1112    o cost package
1113      - Compatible with new ctrl package
1114      - added Eliassen Palm cost hooks
1115      - modif's of existing cost functions
1116    o Adjoint-related bug fixes in kpp:
1117      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1118      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1119    o autodiff package
1120      - flow directives:
1121        + new for S/R do_the_model_io
1122        + enhanced for S/R checkpoint
1123        + new gmredi.flow
1124      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1125        disable adcommon.h/g_common.h by default.
1126      - fixed problem for adjoint of global_max
1127    o modified verification/carbon/
1128    o New setup for adjoint of global_ocean
1129    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1130    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1131    o incorporated hooks for sponge layer code (external_forcing.F)
1132    
1133    checkpoint45d_post
1134    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1135    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1136      (affects plume_on_slope "cg2d" output)
1137    o add new parameter deltaTfreesurf for free-surface time stepping
1138    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1139    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1140    o change phiMin in exp1 (to agree with documentation)
1141    o add new flags:
1142     - T,S forcing inside/outside Adams-Bashforth
1143     - turn off temp,salt advection and/or forcing
1144     - for each tracer, define internal flag for multiDimAdvection & A-B
1145    o monitor: change definition of KE to check conservation of Energy
1146    
1147    checkpoint45c_post
1148    o Removed f90 comments ("!")
1149    o Modified initialisations to enable exf package for MITgcm
1150      (without invoking ECCO_PACKAGE).
1151    o modifications to gradient check package (Martin Losch)
1152      - enable centered differences
1153      - modified format of standard output
1154    
1155    checkpoint45b_post
1156    o cleaned exchange calls in cg2d
1157    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1158    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1159      to configure barotropic setup (Martin Losch)
1160    o moved some initialisations within bi,bj loop in dynamics
1161      (TAF flow dependency)
1162    o in initialise_varia, moved call packages_init_variables
1163      before convective_adjustment_init
1164      (corresponding adjustment of TAF tape initialisation).
1165    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1166    
1167    checkpoint45a_post
1168    o compute Rho over the whole domain (extend iMin,jMin indices)
1169    o specific exchange for X-slice domain (case Ny=1)
1170    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1171    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1172    
1173    checkpoint44h_post = checkpoint45
1174    o Fix to restore differentiability:
1175      place at which packages_init_variables is called in
1176      initialise_varia is crucial for reverse control flow.
1177    o modifications in GMRedi to enable stable adjoint
1178      (corresponding modif's in thermodynamics, dynamics)
1179    o added missing hook for sponge layer code in external_forcing
1180    o modified test cost functions
1181    o storing in gad_advection (plus removal of write(0,*)!
1182    o missing headers TR1.h added in convective_adjustment routines
1183    o errorMessageUnit set non-equal zero in eeboot
1184      (conflict on some platforms, e.g. IBM SP3)
1185    o modified carbon verif.
1186    
1187    checkpoint44h_pre
1188    o vertical grid option: allow to put the Interface at the middle between
1189      2 cell-centers ; replace delZ in pkg/kpp by drF.
1190    o GM Advective form: Tracers are advected using the residual transport (=
1191      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1192    
1193    checkpoint44g_post
1194    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1195      results) ; ifdef missing in thermodynamics.F
1196    
1197    checkpoint44f_pre,checkpoint44f_post
1198    o added PTRACERS package
1199      This allows an arbitrary number of passive tracers to be integrated
1200      forward simultaneously with the dynamicaly model.
1201      + Implemented so far:
1202        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1203        - I/O and checkpointing
1204        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1205      + Not implemented so far:
1206        - KPP
1207        - OBCS
1208      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1209        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1210        line in data.pkg.
1211      + This package is disabled by default since it increases storage.
1212    
1213    
1214    o testscript: added -cleanup option
1215    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1216                 b) enable to filter 2D fields.
1217    
1218    checkpoint44e_pre,post
1219    o re-wrote convective adjustment to use pre-calculated weights
1220      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1221      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1222      Original calls to convect() still in place.
1223    
1224    chkpt44d_pre,post
1225    o added missing EXCLUDE_MONITOR flags
1226    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1227      (incompatible typ in MIN/MAX expressions caused problems
1228      on IBM SP3)
1229    o in genmake added variable MAKEDEPEND
1230      plus resetting for case SunOS
1231    o added timer_stats.c routine for IBM SP3
1232    o removed variables in dynamics
1233    !!! I forgot to create tag chkpt44d_pre !!!
1234    !!! But chkpt44d_pre = chkpt44c_post    !!!
1235    
1236    o real fresh water flux implemented with non-linear free-surface.
1237    
1238    chkpt44c_pre,post
1239    o few fix (mask in shap_s2, EmPmR in external_field_load,
1240      USE_NATURAL_BCS in solve_for_P);
1241    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1242    
1243    checkpoint44b_pre/_post
1244    o merge of relevant stuff from the ecco-branch:
1245      - genmake: removed $S64 overwrite for case SunOS
1246      - pkg/exf: update and corrections for field swapping and obcs
1247      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1248                  harmonized between ECCO and MITgcm
1249      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1250                      updated checkpointing_lev... lists for obcs
1251      - model/src: minor changes in forward_step, plot_field
1252                   added directive for divided adjoint in the_main_loop
1253      - pkg/mdsio: added mdsio_gl_slice
1254    
1255    o check parameters & config (chkpt44a_pre,post)
1256    o OBC and NonLin_FrSurf.
1257    
1258    checkpoint44
1259    o fix bug in mom_vi_del2uv
1260    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1261    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1262    o update AIM experiments (NCEP input files)
1263    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1264    o added some stuff for AD
1265    
1266    checkpoint43
1267    o added two new advection tests
1268    o added global 4x4 degree ocean test
1269    o added test of H&S94 with free surface on cube
1270    o some final mods for gradient check, adjoint,...
1271    
1272    checkpoint42
1273      Fixed AD-related problems:
1274    o Store directives up-to-date with re-arranged Adams-Bashforth
1275      (mainly thermodynamics.F)
1276    o New store directives for multi-dim. advection schemes
1277      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1278      * new common block and key passkey
1279      (mainly gad_advection.F)
1280    o Modified store directives for split of dynamics/thermodynamics
1281      for the case ALLOW_KPP
1282    o Cleaned argument list for timestep_tracer.F
1283    
1284    checkpoint41
1285    o re-formatted/added comments in prologues of key subroutines
1286      to work with protex
1287    
1288    checkpoint40
1289    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1290    o added FLT (floats) package from Arne along with demo. experiment
1291    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1292      implementation of forward-in-time forcing terms
1293    o more mods for non-linear free-surface including new variable
1294    o modified multi-dim method to work on cube
1295    o bug fix in KPP (from DM)
1296    
1297    checkpoint40pre9
1298    o added DST advection schemes
1299    o fix MPI bug on SGI's
1300    o modifications for non-linear free-surface
1301    o fixed conditionals for fixed flow/passive tracer only mode
1302    o added tension/strain form of stress tensor
1303    o changes to commenting of arguments for TAF/TAMC
1304    o added/updated many matlab scripts
1305    o added multi-dimensional advection method for tracers
1306      
1307    checkpoint40pre8
1308    o new package rw/
1309      Added method for dumping intermediate local arrays:
1310      mdsio_writetile - same as mdsio_writefield except works from inside
1311                        bi,bj loop
1312      mdsio_writelocal - same as mdsio_writetile except works for local
1313                         arrays
1314      write_local_r? - higher-level wrapper for mdsio_writelocal
1315      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1316      Example given at end of mom_vecinv.F that dumps some local arrays.
1317    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1318      control flux-form versus vector invariant code.
1319      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1320      or genmake -DISABLE ...
1321    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1322      (additional storing is now needed for case vecinv;
1323      currently nothing implemented to switch this storing off
1324      in case fluxform is used since no CPP flag available).
1325    
1326    checkpoint40pre7
1327    o bug fix in dynamics.F
1328      calc_viscosity called before k=1,Nr loop.
1329    o added some #ifdef's ALLOW_PASSIVE_TRACER
1330    o cleaned initialisations in ctrl_map_ini
1331      related to TAF
1332    
1333    checkpoint40pre6
1334    o split dynamics into thermodynamics & dynamics
1335    o corresponding split of calc_diffusivity into
1336      calc_diffusivity, calc_viscosity
1337      (kpp_calc_diff, kpp_calc_visc).
1338    o Added diffkr, kapgm to control variables
1339    o bug fix in gmredi_slope_limit for ldd97
1340    
1341    checkpoint40pre5
1342    o proper initialization of Adams-Bashforth time stepping
1343      + uses forward step for very first step of model (iter=0)
1344    o re-generated *all* output since almost all output is modified by this
1345      change (sorry but we've been putting this one off for about 2 years)
1346      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1347        *not* regenerated since they are already out of date and I don't
1348        want to create the impression that they are suddenly working.
1349    o removed KAP stuff for DEC's
1350    o modified/added many .cvsignore files in */code and */input
1351    o added new expt "solid-body.cs-32x32x1"
1352      + this uses an alternative form of ini_curvilinear_grid.F which
1353        is not necessarily any better than the current one...
1354    
1355    checkpoint40pre4
1356    o added re-initialisations of utrans,vtrans,rtrans in
1357      calc_common_factors which are crucial for TAF.
1358    o extended iMin,jMin range for calc_common_factors,
1359      calc_diffusivity
1360    o added option ALLOW_PASSIVE_TRACER
1361    o a few minor updates and fixes
1362    
1363    checkpoint40pre3
1364    o created calc_gtr1.F for gad package
1365    o split the_main_loop and re-introduced forward_step
1366    o some recomputations of nIter0 for TAMC
1367    
1368    checkpoint40pre2
1369    o Updated to latest branch of AJA, JMC
1370    o Added gradient check package
1371    o Added routines for passive tracer handling
1372    o Added carbon sequestration sensitivity experiment
1373    
1374    checkpoint39
1375     o Modifications and fixes to support TAMC
1376       (mainly missing or wrong directives)
1377     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1378       in addummy_in_stepping
1379     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1380     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1381     o Included following packages:
1382       cal: calendar
1383       exf: external forcing
1384       ecco: essential routines to control use of cal, exf
1385             (NB: this is not the full ECCO environment)
1386     o disabled some packages by default in genmake
1387    
1388    checkpoint38
1389     o see notes_c37_adj.txt
1390     o corrected wrong layer index in external_forcing_t
1391     o replaced the_main_loop/forward_step by the_main_loop
1392     o removed forceoutput from write_state
1393       (replaced criteria for initial/final state)
1394     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1395    
1396    checkpoint37
1397     o mdsio.F routine split and packaged in pkg/mdsio
1398       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1399        used unless genmake -disable=mdsio)
1400     o allow a more precise surface-geopotential gradient for the atmosphere
1401       taking into account the change in space of Alpha (=1/rho) at the surface.
1402     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1403       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1404     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1405       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1406       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1407     o Time-Average diagnostics defined as a pseudo package "timeave".
1408     o pickup files : old pickup (before c35) did not work with new code (c35
1409       and after) unless activating 2 commented lines in initialise-varia.
1410     o Non-Hydrostatic pickup file Pb fixed.
1411     o bug with Rigid-lid version (since c35) fixed.  
1412    
1413    checkpoint36
1414     o implement Crank-Nickelson barotropic time-stepping
1415     o recover Time-Average diagnostics
1416     o fix Pb in checkpoint (PR#19)
1417     o AIM become a standard package ; clean unused CPP_kees
1418    
1419    checkpoint35
1420     o subtantial rewrite of dynamics.f
1421     o allows staggered time-stepping
1422     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1423     o added bottom drag (linear + quadratic)
1424    
1425    checkpoint34
1426     o Modified exchange routines for correct reverse simulation.
1427     o Added verification output to comply with bug fix in impldiff.F
1428       as of c33 (exp2, natl_box).
1429     o Corrected store directives in dynamics.F
1430     o Corrected array boundaries in impldiff.F
1431     o Corrected array dimensions in gmredi.
1432       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1433     o Added routine GLOBAL_SUM_INT to global_sum.F
1434     o Added mdsio_gl.F for ECCO purposes.
1435    
1436    checkpoint33
1437     o Fixed bug in lower BC in impldiff.F
1438     o Fixed confusion about units of forcing arrays in FFIELDS.h
1439       namely Fu,Fv,Qnet,Qsw,EmPmR:
1440       - Removed verification/natl_box/code/external_fields_scale.F
1441         (did not differ from that in model/src)
1442       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1443         (see FFIELDS.h for description)
1444       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1445         kpp_calc.F and kpp_transport_t.F
1446       - Removed model/src/external_fields_scale.F and calls to it
1447       - verification/natl_box uses flux data with "atmospheric" sign so
1448         a special version of external_fields_load.F is used to
1449         change the data as it's read in. This way, the arrays
1450         have the right units and signs at all times tha a user could
1451         possibly use them.
1452     o Corrected genmake to delete a temporary file during configuration
1453    
1454    checkpoint32
1455     o Scaling of forcing fields moved from external_forcing.F to
1456       external_fields_scale.F, called directly after loading fields.
1457     o Surface relaxation terms added to surface tendency fields in
1458       extra subroutine.
1459     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1460       fields.
1461     o Changes in GMRedi to comply with packaging structure.
1462     o Modifications and bug fixes in KPP package.
1463     o Verification experiment for KPP added (verification/nat_box/)
1464    
1465    checkpoint31
1466     o Packages interface brought in line with defined standard
1467       -> new routines packages_...F
1468       -> changes in initialise_fixed.F, initialise_varia.F
1469       -> enables initialisation interface for ECCO package
1470     o Rescaling of external forcing fields immediately after read
1471       (removed from external_forcing.F)
1472       -> new: surface_fields_scale.F
1473       -> affects ini_foorcing.F, external_fields_load.F
1474     o Computation of surface tendencies before tendency updates.
1475       -> new: external_forcing_surf.F
1476     o Change of variable names useGMRedi, useKPP, useECCO
1477     o Further changes in dynamics.F, impldiff.F for TAMC
1478     o Tested for experiments 0, 2, 4.
1479       - not yet tested for GMRedi.
1480       - not yet tested for KPP.
1481    
1482    checkpoint30
1483     o Updates for OBCs
1484     o New experiment for test OBCs (internal_wave)
1485     o New output.txt in verification/exp4/results/
1486     o Updates for KPP: calculation of viscosity corrected, new variables
1487       kpp_dumpFreq and kpp_taveFreq
1488     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1489       and entry for T90 in genmake
1490    
1491    checkpoint29
1492     o packaged KPP and GM/Redi
1493    
1494    checkpoint28
1495     o Corrected initialization of hFacMin for difference vertical coordinates
1496     o Modified calculation of partial cell thickness to more robust algorithm
1497     o config_summary.F: replaced write_1D_... by write_0D_...
1498       read_write.F: added subroutines write_0D_...
1499     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1500       included some initialisations required for TAMC.
1501     o routine calc_isoslopes: modified sqrt computation to make it
1502       differentiable for zero argument.
1503     o routines dynamics, impldiff:
1504       included store directives and tape key computations required for TAMC.
1505     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1506    
1507    checkpoint27
1508     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1509       formulation works properly with variable resolution.
1510     o restructured the calling tree between the_model_main() and dynamics()
1511     o split initialise() into initialise_fixed() and initialise_varia()
1512     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1513       in new routine ini_psurf()
1514    
1515    checkpoint26
1516     o moved some #ifdef in optional routines to encompass everything
1517       except the argument declarations. This was using up some memory.
1518     o fixed macros like _ADT to work with both versions of Linux cpp
1519     o cleaned up some unused and uninitialized variables
1520       (helps when debugging with strict compile options)
1521     o split up CPP_EEOPTIONS.h into options and macros
1522       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1523     o patch for 2 processor JAM mode
1524    
1525    checkpoint25
1526     o updates for OBCs and NH
1527     o dramatically reduced memory usage
1528     o added "JAM" routines for use on Artic network
1529     o parameterization of convection by implicit vertical diffusion
1530     o added a diagnostic of convective index
1531     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1532       (this is was partly for OBCs and NH but also in anticipation of
1533        an explicit free-surface option)
1534     o initial state input files for U and V
1535    
1536    checkpoint24
1537     o Removed some spurious "REAL"s
1538     o Updated KPP to latest version from JPL
1539     o Added a COS(latitude) in horizontal viscosity
1540    
1541    checkpoint23
1542     o Added del^4 diffusion for salt and temperature
1543     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1544    
1545    checkpoint22
1546     o Made many small changes: implicit none, format(i5), etc...
1547     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1548    
1549    checkpoint21
1550     o Introduced new I/O package that supports direct-access records (mdsio.F)
1551     o Split-up mid-level I/O routines
1552     o Updated input data for experiments 0,1,2,4 and 5
1553     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1554    
1555    checkpoint20
1556     o Tidied up open-boundaries some more
1557     o Added non-hydrostatic code
1558     o Fixed some input data
1559     o Modified MPI start-up to work in "coupled" context.
1560    
1561    checkpoint19
1562     o Tidied up directory structure for verification experiments.
1563     o Added new code for open boundaries.
1564     o Corrected advective terms near boundaries.
1565     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1566     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1567     o Split default parameters out of ini_parms.F into set_defaults.F.
1568    
1569  checkpoint18  checkpoint18
1570   o Further changes for optional code generation with   o Further changes for optional code generation with
1571     CPP - ugh!     CPP - ugh!

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