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revision 1.13 by cnh, Wed Sep 9 15:24:19 1998 UTC revision 1.288 by edhill, Thu May 6 02:42:49 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52n_post
7    o various build (mostly genmake2) changes including:
8      - ability to build/run more easily within Cygwin and MacOS X
9      - more complicated Makefiles with a stronger dependence on Gnu Make
10    o pkg/seaice modifications
11      - added SEAICE_deltaTtherm and SEAICE_deltaTdyn in order to reduce cost
12        of pkg/seaice.  For time being, SEAICE_deltaTtherm = deltaTtracer
13        and SEAICE_deltaTdyn must be integer multiple of SEAICE_deltaTtherm
14      - changed proxy for geostrophic velocity and updated
15        verification/lab_sea/results/* accordingly
16      - removed ADI dynamic solver from pkg/seaice
17      - replaced all occurrences of 1/CSTICE or 1/CSUICE
18        they caused a segmentation fault under certain circumstances
19      - removed unused field WATR
20    o bug fix in exf-package:
21      -  u/vwind are defined at tracer/pressure points. The values of u/vwindmask
22         now reflect that.
23    o small fixes in the cal-package:
24      - set reference date to first of January for the 'model'-calendar
25      - failing of cal_CheckDate in cal_FullDate now actually results in a
26        warning
27    o small modifications in exf-package to increase flexibility:
28      - change climtempfreeze from a constant to a runtime parameter that
29        is specified in data.exf_clim (default = -1.9)
30      - introduce runtime parameter windstressmax (default = 2.0) that is
31        specified in data.exf
32    o fix in pkg/thsice:
33      - update Evap (Tsf changes) to be consistent with Latent heat flux
34      - maintain snow precipitation unchanged (even if Tsf >=0).
35     both affect global_ocean.cs32x15/(.thsice) results ; update output.txt.thsice
36    
37    checkpoint52m_post
38    o commented out call to cal_GetMonthsRec in swfrac.F and added some comments;
39      this does not change any of the results, because myIter=0 in swfrac always
40      lead to jwtype=2 (the default anyway), but the call makes little sense
41      as a default
42    o no SHORTWAVE HEATING lost at the bottom; affects lab_sea output; updated
43    o re-work pkg/thsice interface with ocean & bulk_force pkg to allow
44      atmospheric model (AIM) to use it ; add a "slab ocean" component.
45    o pkg/aim_v23 : add interface to call thermodynamic sea-ice (thsice)
46    o update global_ocean.cs32x15/output (.thsice) after changes in pkg/thsice
47    o extending useSingleCpuIO option to work with new exch2 I/O format
48      - old-style, missing-tile I/O is still accessible by defining CPP
49        option MISSING_TILE_IO in pkg/mdsio/MDSIO_OPTIONS.h
50    o monitor package can write to NetCDF files and/or STDOUT
51    o fix re-definition bug in MNC_GRID_INIT_ALL()
52    o doc/api_reference added
53      - a framework for building an API Reference Manual using all
54        the "protex" comments embedded in the code
55      - see pkg/generic_advdiff, pkg/mnc for examples
56    o MNC:
57      - make myThid the last argument for all subroutines
58      - new default for the grid files: NO halos
59      - add useMNC and other run-time flags
60      - separate per-file-group handling of the unlimited dimension
61      - early initialization of MNC w/ flags read at the eeboot stage
62        and lookup tables set in initialize_fixed
63      - write all MNC output to a freshly-created directory
64    o thermodynamics sea-ice (thsice) is now tested with testreport.
65    o test exp. advect_cs: use the standard cs32 grid ; update output.
66    o Added functionality to grdchk:
67      pick global i,j,k position (or nearest wet) where to perform check.
68    
69    checkpoint52l_post
70    o new land formulation:
71      a) use ground enthalpy as prognostic variable to ensure exact
72         energy conservation.
73      b) account for water temperature and for latent heat of freezing
74         in all processes (rain, run-off, ground storage)
75      c) compute surface and ground temperature implicitly.
76    o aim_v23 modification for new land model:
77      a) Treat separately land / ocean / sea-ice surface fluxes
78         to allow implicit computation of land & sea-ice surface temp.
79      b) add snow precipitation.
80    checkpoint52l_pre
81    
82    o fix problem (when 1 tile is empty) in min/max monitor.
83    o fix bug in timeAve (u,vZetatave in common block)
84    o no restoring terms under ice for pkg/seaice
85    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
86    o bug fix for pkg/seaice pickups
87    o change MNC call locations and add coordinate attributes
88    o mask vorticity at the corner ; affects global_ocean.cs output
89    o fix ini_curvilinear_grid ; test CS experiments with mpi
90    o aim.5l_cs: modify sea-ice fraction input file ; update output
91    o exf: Adding simple range check routine for exf fields after read
92    
93    checkpoint52k_post
94    o removed top-level directory "diags"
95      - we migrated these functions to pkg/timeave a long time ago
96    o fixed bug introduced in pkg/monitor
97    o accuracy ctrlprec = 32 insuffient for gradient checks using
98      averaged fields (I/O via cost_averages)
99      -> use ctrl.h in active_file*.F to control I/O precision.
100    o paramter list of CALL ADTHE_MAIN_LOOP
101    o added initial do_the_model_io to ecco
102    o set all ...Freq to zero after cost_final
103      taveFreq, dumpFreq, pChkptFreq
104    o MAIN and ECCO differentiability restored
105    
106    checkpoint52j_post
107    o fix nchklev in tamc.h for global_ocean...
108    o Bringing flow and store directives up-to-date
109    o Really weird thing!
110      call do_the_model_io from the_main_loop with parameters
111      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
112      TAF places a faulty re-call of initialise_varia
113      after cost_final call which should not be there!
114    checkpoint52j_pre
115    
116    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
117      error messages
118    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
119    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
120      debug output
121    o modfied mdsio_writefield.F to handle non-global files under exch2
122    o update AIM Cubed-Sphere exp (aim.5l_cs):
123      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
124    o update AIM Equatorial Channel exp:
125      use standard aim_v23 pkg and change the SST fields to be more realistic.
126    o globalFile now works with exch2
127    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
128      mon_vort3.F to make exch2 friendly with >1 tile per cube face
129    o limit timeave output for hi-res integrations
130    
131    checkpoint52i_post
132    o removed CPP_EEOPTIONS.h from verification/*/code
133    o updated the tiling for global_ocean_pressure
134    checkpoint52i_pre
135    
136    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
137      the old pkg/aim).
138    
139    checkpoint52h_pre
140    o shortened offending lines in exch2_send_rx?.template
141    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
142    o genmake2: add build & execute test for NetCDF code
143    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
144      old grid files, moved CPP_EEMACROS.h to pkg/exch2
145    o added useSingleCPUIO flag to monitor.F and mon_out.F
146    o added temporary hack for sea-ice dynamics on the cube:
147      metric terms are ignored and it is assumed that
148      there is no sea-ice on cube faces 1, 2, 4, and 5.
149    
150    checkpoint52f_post
151    o added exch2 cube routines to pkg/exch2
152    o modified hs94.cs-32x32x5 to use it
153    o added new grid files to hs94.cs-32x32x5
154    checkpoint52f_pre
155    
156    checkpoint52e_post
157    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
158      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
159    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
160      to work with implicit vertical advection and AB ;
161    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
162    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
163     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
164    checkpoint52e_pre
165    
166    o fix bug in impldiff when Nr=1 or Nr=2.
167    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
168    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
169    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
170      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
171    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
172    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
173    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
174    
175    checkpoint52d_post
176    o re-tiled many expts to allow comparison in multi-processor mode
177      - updated output accordingly
178      - changed hs94.128x64x5 to use intial T from file rather than use the
179        random number generator
180    o add infrastructure in model routines for fizhi and gridalt packages
181    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
182    o changes to permit hi-res, cubed-sphere, configuration
183      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
184      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
185      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
186        of surface winds for the cube
187      (A verification experiment, based on global_ocean.cs32x15, but with
188       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
189       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
190       complete with example surface forcing files and matlab scripts to look
191       at the output and compare it with that of global_ocean.cs32x15.)
192    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
193       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
194       to conform to the common rule.
195    o check-in the first version of the coupler + interfaces for multi-components
196       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
197       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
198       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
199       - ocean and atmos. share the same horizontal grid (no interpolation).
200       - exchanges between component and coupler is done in forward_step
201    o new verification experiment, cpl_aim+ocn:
202       coupled ocean - AIM atmosphere on cs32 grid.
203    
204    checkpoint52d_pre
205    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
206    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
207    
208    checkpoint52c_post
209    o Fixing OPTIONS files for use of exf:
210      - ALLOW_ECCO not needed
211      - ECCO_CPPOPTIONS.h should not be included from
212        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
213        as has been the case in the past
214      - All cal/exf related options are currently set in
215        single header file. Should remain so until we
216        agree on a consistent new policy.
217    o Removed all CPP options for cal package.
218      cal has no more CPP options.
219    o modified STOREs in GAD_ADVECTION
220    o corrected key comp. for passkey
221    
222    checkpoint52b_post
223    o new version: "thsice" of thermodynamic sea-ice pkg:
224     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
225     - modify fluxes but do not change theta directly;
226     - light cleaning of bulk_force pkg (still needed with thsice).
227     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
228       + output_thsice.txt to test thsice & bulk_force pkgs.
229    o put back grid & coriolis monitor output.
230    checkpoint52b_pre
231    
232    o call "do_the_model_io" at the beginning (=> dump initial state)
233    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
234    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
235      (need info on NUMBER_OF_PTRACERS)
236    o missing PTRACERS headers in some routines
237    o default tamc.h in pkg/autodiff supposed to crash
238      to ensure proper customization
239    
240    checkpoint52a_post
241    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
242      - moved surfaceTendencyTice from pkg/seaice to main code
243      - subroutine FREEZE_SURFACE now limits only surface temperature
244        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
245        => new output.txt for global_ocean.cs32x15 & global_with_exf
246      - keep the old version of FREEZE for backward compatibility;
247        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
248      - corresponding modifs for TAF directives
249    o added surface flux output variables to TIMEAVE_STATVARS
250    o time-averaged output for pkg/ptracers
251    o fix problem with ECCO-related divided adjoint
252      snapshot file was missing some ad-variables,
253      but no warning issued by TAF
254    
255    checkpoint52a_pre
256    o some bug fixes for #undef REAL4_IS_SLOW
257    
258    checkpoint52 = ecco_c52_e35
259    o after testing adjoints of checkpoint51u_post
260    
261    checkpoint51u_post
262    o this is the post-merge tag of the ecco-branch
263      (needs another clean checkout and re-testing)
264    o various natl_box_adjoint configs and results
265      but no input fields
266    o obcs adjoint not yet merged!
267    o adding ECCO global 1x1 and 2x2 degree configs
268    o updated/extended some store directives for seaice
269    o pkg/ecco now containes ecco-specific part of cost function
270    o top level routines the_main_loop, forward_step
271      supersede those in model/src/
272      previous input data.cost now in data.ecco
273      (new namelist ecco_cost_nml)
274    o in ctrl/ cleaned some cross-dependencies and updated CPP options
275    
276    checkpoint51t_post
277    o this is the pre-merge tag of the ecco-branch
278    
279    checkpoint51s_post
280    o cleanup: removed various obsolete #define-s
281    o pkg/grdchk
282      - renamed 'ph-grd 3' to 'grad-res'
283      - merged from ecco-branch
284        (remaining bug fixes for obcs gradient checks)
285      - additional high-precision output for testreport
286        (grep for 'precision_grdchk_result')
287    
288    checkpoint51r_post
289    o cleaned up or removed CPP_OPTIONS.h files
290    o updated results for some of the tests to reflect the new
291      optfiles (-ieee: -O0 instead of -O3)
292    
293    checkpoint51q_post
294    o cd_code:
295      - moved cd_scheme.F -> cd_code_scheme.F
296      - separate read_checkpoint from cd_code_ini_vars.F
297      - separated cd_code part from write_checkpoint
298      - updated AD_SOURCE, generated .flow
299      - added CD_CODE_VARS.h to the_main_loop
300      - Moving cd_code specific store dir.s to pkg/cd_code
301    o ctrl package totally restructured
302      - pack/unpack now optional and decoupled from
303        xx_/adxx_ I/O
304      - ctrl_pack/unpack cleaned
305        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
306      - confined inclusion of AD_CONFIG.h to where necessary.
307    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
308    
309    checkpoint51p_post
310    o create initial cd_code package
311      - WARNING: the initialization of fields within packages
312        is broken because INI_FIELDS (where READ_CHECKPOINT is
313        called) is called *before* PACKAGES_INIT_VARIABLES.
314        This seems to be backwards since
315        1) its important to initially zero the entire field including
316           the "halo" region
317        2) zeroing needs to be done *before* reading pickup info
318           and the pickup call might or might not happen in any
319           particular run
320      - this needs an overhaul for R2
321    o cleanup verification/*/code/GMREDI_OPTIONS.h
322    o cleanup testreport
323    
324    checkpoint51o_post
325    o bringing AD-related verif's up to date with genmake2
326      - carbon/
327      - global_ocean.90x40x15/
328      - hs.94.1x64x5/
329      - (front_relax/ )
330    o (more) consistent directory structure for AD-related verif.'s
331    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
332    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
333    o bug fix in find_alpha.F for MDJWF:
334      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
335        change rho -> rho-rhoConst
336      - replace call find_rho to find_rhonum
337    o initialisation of rFlx extended to full array (required by TAF)
338      and shifted to thermodynamics
339    o removed PTRACERS.h in ptracers routine
340    o added surfacetendencyPtr to S/R parameter list pracers_forcing
341    o Correcting initialisations for fVerU, fVerV.
342    o helping TAF to recognize dependency on kUp for
343      fVerU, fVerV
344    o Replacing delZ by delR in pkg/ctrl/
345    checkpoint51o_pre
346    
347    o undid all of cp51 pending some cleanups and discussion
348    o added the [#include "AD_CONFIG.h"] statement to all files that need
349       it for adjoint/tl #defines
350     o re-worked the build logic in genmake2 to support AD_CONFIG.h
351     o removed tools/genmake since it no longer works
352    
353    checkpoint51n_post
354    o modifications to make FREEZE flux visible to pkg/kpp
355      - moved surfaceTendencyTice from pkg/seaice to main code
356      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
357      - subroutine FREEZE now limits only surface temperature
358        (this means new output.txt for global_ocean.90x40x15,
359         global_ocean.cs32x15, and global_with_exf)
360    o added surface flux output variables to TIMEAVE_STATVARS
361    
362    checkpoint51n_pre
363    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
364    o added [#include "AD_CONFIG.h"] to all files that use the following
365      defines:
366      - ALLOW_ADJOINT_RUN
367      - ALLOW_TANGENTLINEAR_RUN
368      - ALLOW_ECCO_OPTIMIZATION
369    
370    checkpoint51m_post
371    o incorporating changes to get TAMC/TAF working in genmake2
372      - added new TAMC/TAF targets to the Makefile
373      - various cleanups related to package handling
374      - these changes should have no impact on the forward model
375    
376    checkpoint51l_post
377    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
378     - faster algorithm for cal_addtime.F
379     - higher precision arithmetic, where needed
380     - pkg/exf *startdate variables changed from calendar date to
381       model integration time
382    
383    checkpoint51l_pre
384    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
385    o enable to apply restoring on S & T only in a latitude band.
386    o update output (external_forcing_surf modif. change truncation errors)
387       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
388    
389    checkpoint51k_post
390    o change default to: useNHMTerms=.FALSE.
391     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
392       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
393     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
394        exp1, ideal_2D_oce
395     - change data file of oceanic exp (leave the results unchanged for now)
396       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
397    o set gravitySign automatically according to the vertical coordinate used
398      (and change sign: back to "logical" value: +1 when R increases downward)
399    o added an include barrier to the default CPP_OPTIONS.h and
400      removed the #include "PACKAGES_CONFIG.h" from it
401    o fix a bug in mom_fluxform (from chk51j_post)
402    
403    checkpoint51j_post
404    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
405    o adjusted some flow directives (dynamics, thermodynamics)
406    o added cubed-sphere case to test cost function
407    o heckpoint_lev?_directives.h now include
408      pkg-specific directives, whenever those are enabled.
409    o Moving pkg-specific flow directives to corresponding pkg
410      Moving pkg-specific differentiation list to corresponding pkg
411      Moving pkg-specific checkpoint-lev storing to corresponding pkg
412      ---> conventions are
413           - pkg_ad.flow
414           - pkg_ad_diff.list
415           - pkg_ad_check_lev?_dir.h
416    
417    checkpoint51i_post
418    o merge of the branch-genmake2
419      - knowingly breaks the older genmake
420      - automatic generation of all ALLOW_${PKG_NAME} defines
421      - new testreport supersedes older testscript
422    o large number of package inclusion and header cleanups
423    checkpoint51i_pre
424    
425    o new output for adjoin of global ocean vector invariant
426    o fix for checkpoint of thermodynamic seaice and bulk_force
427    o Steph gchem various cleanups
428    
429    checkpoint 51h_pre
430    o fixed some single quotes
431    o modify gchem pkg to be more versatile
432    o modifications to clean up dic pkg
433    o add pkg/cfc
434    
435    checkpoint51g_post
436    o provide links for ARPACK and ADM*TLM
437    o start removing verification/vero/
438    o update AD-related stuff
439      (in particular some IF-statements in model/src/ routines)
440    o adding to verification/global_ocean.90x40x15/ adjoint of
441      vector invariant setup
442    
443    checkpoint51f_post
444    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
445    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
446      of tracer Green's fucntions for ocean inversion project.
447    
448    checkpoint51f_pre
449    o Added on-the-fly spatial interpolation capability
450        "USE_EXF_INTERPOLATION" to pkg/exf.
451      - This is a temporary Cartesian-grid hack until
452        the super-duper ESMF coupler becomes available.
453      - See verification/global_with_exf/README for usage example.
454      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
455        flags and modified pkg/seaice accordingly.
456    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
457        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
458        non-local transport term.
459    
460    checkpoint51e_post
461    o pkg/mom_vecinv:
462      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
463      - add time-ave diagnostic of vorticity advection.
464    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
465    o atmospheric geopotential: - include water vapor effect;
466                                - use p^kappa in p* scaling.
467    o land pkg: read initial state from files.
468    o AIM : add stratospheric drag in the upper level
469    
470    checkpoint51d_post
471    o change function ILNBLNK (=> last non-blank char.) to return zero
472      (instead of the string length) when the string. char is empty
473    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
474    o modif's to restore TAMC compatibility
475      - avoid "_d" constructs in PARAMETER declarations
476      - avoid interrupting lines by comment lines
477    o Use cluster local disks for purely local I/O
478      vs. globally visible disks needed for ctrl stuff
479      (merged from ecco-branch)
480      - new active_file_loc... and mdsio_..._loc routines
481      - affected packages: autodiff, ctrl, grdchk, mdsio
482    
483    checkpoint51c_post
484    o introducing integer flag debugLevel
485      - debLevZero: suppress all output
486      - debLevA: standard
487      - debLevB: equivalent to current debugMode=.TRUE.
488    o introducing pathname variable mdsioLocalDir for mdsio
489      that can be specified at runtime
490      (relevant for cluster I/O to local disk)
491    `
492    >>>checkpoint51b_post
493    adjoint of ptracers
494    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
495    o extended state in checkpoint_lev?, etc.
496    o alternative ctrl/cost with tr1 or ptracer
497    o new comlev1_bibj_ptracers
498    o new ptracers.flow
499    o made ptracers_forcing same as external_forcing_s
500    o added verification for adjoint with ptracers
501      - adm. grdchk fail so far
502      - tlm. grdchk OK
503      - checked tapelev/comlev recomputations: OK
504    <<<checkpoint51b_pre
505    
506    checkpoint51a_post
507    o added code for biogeochemistry package
508      - new pkgs: dic, gchem
509      - new subroutine in ptracers
510    o modify code for biogeo packages
511      - in model/src and pkg/ptracers
512    
513    checkpoint51
514    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
515      - autodiff, ctrl, exf, grdchk, seaice
516      kept separate packages
517      - cost, ecco, obcs
518    o updating verification/internal_wave, verification/lab_sea
519      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
520    
521    checkpoint50i_post
522    o Preparing next differentiable checkpoint and sync
523      of MAIN vs. ecco-branch
524      - 1st step: this one is differentiable
525      - 2nd step: next(! not this) checkpoint will have updated packages
526                  from ecco-branch)
527    
528    checkpoint50h_post
529    o new package "land": provide surface BC for AIM.
530    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
531    o AIM: use true log-P extrapolation for near surface temp (= as in
532        F.Molteni paper) ; update aim.5l_cs output.
533    o New variable in PARM03 for more flexible pickups
534    o somewhat cleaned package initialisation sequence for
535      ctrl/ cost/ ecco/ in packages_... routines
536    
537    checkpoint50g_post
538    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
539      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
540      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
541        made the default because of faster convergence than ADI
542    
543    checkpoint50f_post
544    o exf totally restructured
545      - replaced all exf_set_ routines by one generic exf_set_gen.F
546        and made sure it's still differentiable
547      - split exf_getffields.F into new exf_bulkformulae.F
548      - exf_inscal_/exf_outscal_ suffixes consistent with field names
549      - updated adjoint/makefile and relevant verif. accordingly
550    
551    checkpoint50f_pre
552     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
553          + change Evap over land. (update aim.5l_cs output)
554     o added missing .cvsignores and made uniform across expts
555     o changed configuration of tidal_basin_2d expt
556     o added pkg/debug functions for tracing code in fatal crashes
557     o tidied pkg/monitor to use MONITOR_OPTIONS.h
558     o new fn in pkg/monitor to stop model if solution grows too big
559     o removed lots of single quotes from comments
560    
561    checkpoint50e_post
562    o make KPP work with PTRACERS
563     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
564       nearly a copy of kpp_transport_s
565     - there is no analogue to SurfaceTendencyS, so I have to use
566       gPtr(of the surface layer) instead
567    o add a new platform SunFire+mpi (SunFire 15000) to genmake
568    checkpoint50e_pre
569    
570    checkpoint50d_post
571    o change kpp output from multiple-record state files to single-record state
572      files analogous to write_state.F
573    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
574      analogous to the cg2d-related output.
575    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
576      so that writing to internal file fn (with length 512) fails.
577    checkpoint50d_pre
578    
579    checkpoint50c_post
580    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
581    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
582    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
583    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
584    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
585    
586    checkpoint50c_pre
587    Merging from release1_p13:
588    o bug fix for pkg/seaice dynamic solver
589    o Added SEAICE_initialHEFF to pkg/seaice
590    
591    checkpoint50b_post
592    o store u*,v* in gU,V instead of in guNm1,gvNm1
593    o in order to put the momForcing out of the Adams-Bashforth:
594      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
595      to timestep.F
596    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
597    o re-generate output for highly sensitive test-exp:
598       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
599    
600    checkpoint50b_pre
601    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
602    o corrected CPP option mismatch in exf_Bulk... functions for case
603      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
604    
605    checkpoint50a_post
606    o Bug fix for merging between c50 and KPP.
607      ikey was passed from thermodynamics to kpp_calc via
608      common block rather than being recomputed in kpp_calc,
609      in contradiction with new key itdkey.
610      New key ikppkey created, and tamc.h headers updated.
611    
612    checkpoint50
613    - 2nd step of merge with ecco-branch:
614      merge changes in ecco-branch back into main trunk
615    - bug fix in find_alpha
616    - more storing in gmredi_calc_tensor.F, kpp_routines.F
617    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
618    - merged some sliced AD support routines
619    
620    checkpoint49
621    merged from ecco-branch:
622    o exf:
623      - Enable initialisation of forcing fields to constant
624        (runtime) values.
625      - in exf_getffields.F
626        Reduce i-/j-loop to interior domain, discarding overlaps.
627        That also fixes wrong TAF-key computations for key_1, key_2
628        with bulf formulae.
629      - exf_init.F modify #ifdef for exf_init_evap
630      - exf_getffieldrec.F, ctrl_getrec.F
631        The following INT-usages are not safe:
632          fldsecs  = int(fldsecs/fldperiod)*fldperiod
633          fldcount = int(fldsecs/fldperiod) + 1
634        and were modified.
635    o autodiff: checkpoint_lev...
636      - updated storing for bulk formulae (some arrays were missing)
637      - added state for seaice package
638      - synchronized with main branch
639    o DIVA:
640      Modif.s in
641      - the_main_loop.F
642      - the_model_main.F
643      and added cost_final_restore.F cost_final_store.F
644      o With these changes, it is possible to fully separate
645        the first forward run to compute the cost function (mdthe_main_loop)
646        and adjoint runs over individual DIVA intervals (adthe_main_loop)
647        into separate model executions.
648        This enables better tuning of DIVA to given queue sizes.
649      o Loss of cost function value in consecutive DIVA runs is
650        fixed by storing to 'costfinal' file.
651      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
652        beginning/end of adjoint integration is accounted for.
653      The current changes apply to TAF-1.4.26.
654      TAF has one remaining bug, requiring one manual change
655      (see MITgcm manual).
656    o cal: synchronized between MAIN and ecco-branch
657    
658    checkpoint48i_post
659    o Changes to restore differentiability of code w.r.t. previous tag
660      (mostly adding new routines to make list and replacing
661      pressure by totPhiHyd).
662    o Updated and merged grdchk package
663      - has both ADM and TLM checks
664      - works for single- and multi-proc.
665      - output cleaned
666      - worked successfully for parallel DIVA
667    o genmake:
668      - Adding -platform=SP4
669      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
670    o Modif. for DIVA:
671      ctrl_unpack should not be called in intermediate DIVA interval.
672      (similar thing would apply for active files such as
673      tbar, sbar, psbar, which should not be reinitialised;
674      only relevant for ecco-branch)
675    
676    checkpoint48h_post
677    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
678    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
679    o Added SEAICE_initialHEFF to pkg/seaice
680    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
681    
682    checkpoint48g_post
683    --- EOS:
684    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
685      store total Potential in totPhyHyd for diagnostics & EOS.
686    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
687    --- Pressure/geopotential gradient:
688    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
689    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
690      ( changes results of global_ocean_pressure )
691    o NLFS + z-coord.: add eta*Rho' contribution.
692    o accurate phiHyd when using interface-W at the middle between 2 centers
693     ( changes results of ideal_2D_oce )
694    o includes r* 2nd term in potential gradient.
695    
696    checkpoint48f_post
697    Merging from release1_p12:
698    o Modifications for using pkg/exf with pkg/seaice
699      - improved description of the various forcing configurations
700      - added basic radiation bulk formulae to pkg/exf
701      - units/sign fix for evap computation in exf_getffields.F
702      - updated verification/global_with_exf/results/output.txt
703    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
704      (SBO) core products, including oceanic mass, center-of-mass,
705      angular, and bottom pressure (see pkg/sbo/README.sbo).
706    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
707      to avoid negative values in shallow regions.
708      - updated verification/natl_box/results/output.txt
709      - updated verification/lab_sea/results/output.txt
710    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
711    o Added useSingleCpuIO option (see PARAMS.h).
712    o Updated useSingleCpuIO option in mdsio_writefield.F to
713      work with multi-field files, e.g., for single-file pickup.
714    o pkg/seaice:
715      - bug fix in growth.F: QNET for no shortwave case
716      - added HeffFile for specifying initial sea-ice thickness
717      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
718    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
719      kpp_transport_t.F, forward_step.F, and the_main_loop.F
720    o pkg/seaice:
721      - adjoint-friendly modifications
722      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
723    
724    checkpoint48e_post
725    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
726    o dynamics: change definition of computational domain & adapt mom_fluxform
727      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
728    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
729        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
730        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
731        global_ocean.90x40x15 global_with_exf global_ocean_pressure
732        inverted_barometer solid-body.cs-32x32x1
733      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
734    
735    checkpoint48d_post
736    o in preparation for r*:
737     a) use pre-computed gradient of hydrostatic potential:
738        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
739     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
740        => affects results of glob_oce_pressure (different truncation error)  
741      update output.txt of ideal_2D_oce & global_ocean_pressure
742    
743    checkpoint48d_pre
744    o in preparation for r*:
745      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
746      pass the 2 comp. of the grad. as arguments to momentum S/R.
747      but for the moment, only used if it does not change the results.
748    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
749    
750    checkpoint48c_post
751    Modifications in treatment of initial flux forcing controls
752    to avoid extra storing of flux fields.
753    
754    checkpoint48c_pre
755    o Added tidal_basin_2d experiment (currently 1D!)
756    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
757    
758    checkpoint48b_post
759    o r* coordinate added in #ifdef NONLIN_FRSURF block.
760     (modification to pressure gradient not yet implemented)
761    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
762      (for U & V) that are used for vertical advection of momentum.
763    
764    checkpoint48a_post
765    o In preparation for r*, use temp. array to compute vertical transport
766       in flux-form momentum pkg. => change results of few test-exp.
767      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
768                        lab_sea, natl_box & plume_on_slope
769    
770    checkpoint48
771    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
772    
773    checkpoint47j_post
774    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
775    o moved adexch from forward_step to addummy_in_stepping
776    o added exch in ctrl_map_...
777    o aveFreq.=0. at end of cost_final to avoid overwrite in
778      reverse checkpointing loop
779    o Yet more changes in gmredi:
780      * adgmredi_calc_tensor
781        avoiding all recomputation of gmredi_slope_limit
782      * adgmredi_x/y/rtransport
783        added flag for excessive storing to avoid recomp. of
784        u/v/rtans, dTdx/y/z
785        -> this is not really necessary and very memory-consuming
786      * adgmredi_slope_psi:
787        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
788      * gmredi_slope_limit
789        re-activated full calculation of taperfct for case 'ac02'
790    o updating verification/ adjoints of carbon, global_ocean.90x40x15
791    
792    checkpoint47i_post
793    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
794    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
795      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
796    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
797    o gmredi: fix few bugs.
798    
799    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
800    This will be a good checkpoint to plug into the ecco-branch.
801    o few modif.'s to get latest version adjointed
802      (mainly kick out code in ini_linear_phisurf)
803    o modif's to run adjoint with exactConserv
804    o case GM_BOLUS_ADVEC should be cleaned
805      S/R gmredi_slope_psi should be cleaned
806    o verification/carbon now has exactConserv=.TRUE.
807    
808    checkpoint47g_post
809    o time-average AIM output: becomes independent from statvars time-average
810      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
811    o After TAF bug fix:
812      Tested adjoint of gmredi package.
813      Tests were done with checkpoint47 rather than with latest
814      checkpoint47f_post since the latter is broken for the adjoint
815      verification/carbon/ contains both ADM and TLM gradient checks.
816    Here they are, before they get changed/lost/stolen.
817    Mostly modif.'s to fix numerical sensitivities.
818    Gradient checks OK for
819    - GM_taper_scheme:
820      * clipping
821      * ac02
822      * linear
823      * glw91
824      * dm95
825      * ldd97
826    - GMREDI_OPTIONS:
827      * GM_VISBECK_VARIABLE_K
828      * GM_NON_UNITY_DIAGONAL
829      * GM_EXTRA_DIAGONAL
830      * GM_BOLUS_ADVEC
831    in conjunction with data.gmredi parameters to be checked in
832    in a few minutes under verification/carbon/code/
833    
834    checkpoint47f_post
835    Merging from release1_p10:
836    o modifications for using pkg/exf with pkg/seaice
837      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
838        and SEAICE_EXTERNAL_FLUXES
839      - pkg/exf CPP options EXF_READ_EVAP and
840        EXF_NO_BULK_COMPUTATIONS
841      - usage examples are Experiments 8 and 9 in
842        verification/lab_sea/README
843      - verification/lab_sea default experiment now uses
844        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
845    
846    checkpoint47e_post
847    o created a tag prior to creating a branch
848    
849    checkpoint47d_post
850    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
851      at the bottom boundary had an erroneous half slip boundary condition
852    o added bottom drag and no slip boundary condition capabilities to
853      oceanic pressure coordinates code
854    o added new verification experiment global_ocean_pressure, this experiment is
855      also described in the tutorial section of the manual
856    checkpoint47d_pre
857    
858    checkpoint47c_post
859    o Added a verification experiment for a global cubed-sphere ocean run
860      -  verification/global_ocean.cubed32x32x30
861      -  uses pkg/therm_seaice and pkg/bulk_forcing
862    
863    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
864    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
865      when using P-coordinate; only implemented for atmospheric config.
866    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
867      NOTES: requires option NONLIN_FRSURF to be "#define".
868    o update advect_xz/results/output.txt (left from checkpoint44g_post)
869    
870    checkpoint47b_post
871    Merging from release1_p9:
872    o pkg/seaice
873      - removed GOTO's and added taf directives
874      - double precision constants to reduce the g77 (Linux)
875        to F77 (SGI) differences reported in release1_p8
876    o tools/genmake
877      - added SGI options
878    o verification/testscript
879      - updated to that of checkpoint47a_post
880    o verification/global_ocean.90x40x15/input/eedata
881      - modified for SGI f77 compatibility
882    o verification/lab_sea
883      - added description of sea-ice model
884      - added missing matlab routines
885      - added test of thermodynamics parallelization
886    
887    checkpoint47a_post
888    o new pkg: aim_v23
889     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
890       for now, keep the same surface forcing as before.
891     - Part-Cell implemented into AIM; check that Heat & Water are conserved
892     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
893     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
894    o add diagnostic of surface correction term in monitor output
895    
896    o bulk_force and therm_seaice
897    - Two packages:  bulk_force (Bulk forcing)
898      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
899    - Earlier integration from Stephaine Dutkiewicz
900      and Patrick Heimbach.
901    - Two ifdef statements for compile time,
902       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
903    
904    checkpoint47
905    differentiable version of checkpoint46n_post
906    o bug fix in quasihydrostaticterms
907    o * "clean" adjoint code (in terms of extensive recomputations)
908        can now be obtained for all GMREDI options (i.e. for
909        - GM_VISBECK_VARIABLE_K
910        - GM_NON_UNITY_DIAGONAL
911        - GM_EXTRA_DIAGONAL
912        - GM_BOLUS_ADVEC )
913      * However, wrong gradient check problem remains unsolved.
914      * New CPP options have been introduced for different
915        tapering schemes
916    o external_fields_load now part of differentiation list
917    o pressure needs multiple storing;
918      would be nice to have store_pressure at beginning or
919      end of forward_step, e.g. by having phiHyd global (5-dim.)
920      (NB: pressure is needed for certain cases in find_rho,
921      which is also invoked through convective_adjustment).
922    o recomputations in find_rho for cases
923     'JMD95'/'UNESCO' or 'MDJWF' are OK.
924    o #define ATMOSPHERIC_LOADING should be differentiable
925    o ini_forcing shifted to begining of initialise_varia
926    o Incorporating QNVS line search routines into MITgcm
927      (this is separate code, and therefore not under pkg)
928      lsopt/, optim/
929    o Updated verification/carbon/
930      - #define GM_VISBECK_VARIABLE_K
931      - GM_taper_scheme    = 'ldd97'    
932    
933    checkpoint46n_post
934    Merging from release1_p8:
935    o verification/natl_box:
936      updating new external_fields_load routine
937    o New package: pkg/seaice
938      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
939      The sea-ice code is based on Hibler (1979-1980).
940      Two sea-ice dynamic solvers, ADI and LSR, are included.
941      In addition to computing prognostic sea-ice variables and diagnosing
942      the forcing/external data fields that drive the ocean model,
943      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
944      The implied surface heat flux is then stored in variable
945      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
946      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
947      non-local transport term.  Because this call precedes model
948      thermodynamics, temperature under sea-ice may not be "exactly" at
949      the freezing point by the time theta is dumped or time-averaged.
950      N.B.: fairly large differences in accuracy occur across
951            different platforms/compilers; comparison between
952            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
953            generated output gives:
954       T           S           U           V
955      C D M    c        m  s        m  s        m  s        m  s
956      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
957      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
958      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
959    
960      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
961    o GAD:
962      - generated new common blocks to account for call of
963        same gad routines with differing traceridentities
964        (needed to modify tracerIdentity indices in GAD.h)
965      - generated separate common blocks for case useCubedSphereExchange
966        (Department of Futurology)
967      - parameter lists to gmredi_?transport: added tracerIdentity
968      - added new key indices to tamc.h
969    o external_fields_load:
970      - added this routine to TAF list
971      - needed to make some common blocks global and additional storing
972        along the same lines as exf package (checkpoint_lev?_directives.h)
973    o exf:
974      updated external forcing package
975      - bug fixes carried over from ecco-branch
976        (missing OBCS_OPTIONS.h in two routines)
977      - enable easy to use "no forcing".
978      - added exf I/O for atmospheric loading
979      - added exf I/O for runoff data
980      - transfered scaling between exf <-> MITgcm to exf namelist
981    o Adding new verification experiment global_with_exf.
982      This verification experiment is almost identical to the
983      global_ocean.90x40x15 experiment, except that it uses
984      the exf (and cal) package instead of the
985      external_fields_load routine (cf README file).
986    
987    checkpoint46m_post
988    o modified testscript to return -- when there are no lines of "%MON" output
989    o added new flag "quasiHydrostatic" for QH mode
990      and new routine quasihydrostaticterms()
991    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
992      New routine: mom_u_coriolis_nh()
993    o fixed sign of non-hydrostatic metric terms in u and v equations.
994      Depend on correct sign of gravitySign.
995    o added work.pc* to .cvsignore in aim directories using ifc
996    o introduced flag for controllin non-hydrostatic metric terms
997    o removed gravitySign from PARM04
998    o switched to g77/ifc from pgf77 in aim experiments
999    
1000    checkpoint46l_post
1001    o made convective adjustment work with pressure coordinates:
1002     - changed the direction of k-loop in convective_adjustment.F for the
1003       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
1004     - adjusted the reference pressure k-index in convective_adjustment.F
1005     - adjusted the convection condition in convect.F (in analogy to
1006       calc_ivdc.F)
1007     - convective_adjustment no longer computes anything on the halos
1008     - removed the warnings about negative salinity from find_rho.F and
1009       find_alpha.F; instead the new routine look_for_neg_salinity, called
1010       at the beginning of find_rho, find_alpha, and find_beta, does a
1011       check of the entire slice, if CPP-option
1012       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
1013    checkpoint46l_pre
1014    
1015    checkpoint46k_post
1016    o fixed the verification/global_ocean.90x40x15 experiment:
1017     - new bathymetry (the world according to A., JMC, and M.)
1018     - new initial fields and forcing fields (*.bin files)
1019     - new POLY3.COEFFS (for the next release one should switch to a full
1020       equation of state: JMD95P or MDJWF)
1021     - fixed several errors and redundancies in the data file
1022     - experiment uses looped cells
1023     - added matlab directory with diagnostic scripts for plotting of output
1024    
1025    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
1026     - read AIM physics parameters from a file (data.aimphys)
1027     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
1028    
1029    checkpoint46j_post
1030    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
1031    o move wVel computation at the end of the time step, in S/R integr_continuity
1032    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
1033    o update timeave pkg for wVel diagnostic.
1034    checkpoint46j_pre
1035    
1036    checkpoint46i_post
1037    o Clean up AIM package (and keep the results unchanged):
1038      include CPP_OPTION and use IMPLICT NONE in all routines ;
1039      declare all the variables _RL ; use _d 0 for all numerical constants.
1040      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
1041    
1042    checkpoint46h_post
1043    o cleaned up the use of rhoNil and rhoConst.
1044      - rhoNil should only appear in the LINEAR equation of state, everywhere
1045        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
1046        and the dynamical equations are all divided by rhoConst
1047    o introduced new parameter rhoConstFresh, a reference density of fresh
1048      water, to remove the fresh water flux's dependence on rhoNil. The default
1049      value is 999.8 kg/m^3
1050    o cleanup up external_forcing.F and external_forcing_surf.F
1051      - can now be used by both OCEANIC and OCEANICP
1052    checkpoint46h_pre
1053    
1054     Added code to convert surface volume flux (fresh water) into
1055     a mass flux when using P coordinates in the ocean (OCEANICP).
1056     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1057    
1058    checkpoint46g_post
1059    o Include a new diagnostic variable phiHydLow for the ocean model
1060      - in z-coordinates, it is the bottom pressure anomaly
1061      - in p-coordinates, it is the sea surface elevation
1062      - in both cases, these variable have global drift, reflecting the mass
1063        drift in z-coordinates and the volume drift in p-coordinates
1064      - included time averaging for phiHydLow, be aware of the drift!
1065    o depth-dependent computation of Bo_surf for pressure coordinates
1066      in the ocean (buoyancyRelation='OCEANICP')
1067      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1068        Theta, Salinity, and Pressure in the parameter list. This routine is
1069        presently contained in find_rho.F. This routine does not give the
1070        correct density for 'POLY3', which would be a z-dependent reference
1071        density.
1072    o cleaned up find_rho
1073      - removed obsolete 'eqn' from the parameter list.
1074    o added two new verification experiments: gop and goz
1075      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1076    checkpoint46g_pre
1077    
1078    checkpoint46f_post
1079    o Enable tangent linear (forward mode) gradient checks:
1080      - extended active file handling to g_... files
1081      - added TANGENT_SIMULATION to theSimulationMode
1082      - extended grdchk package accordingly
1083    o added tangent linear setup in verification/carbon/code_ftl
1084    o added adjoint setup in verification/front_relax/code_ad
1085    
1086    checkpoint46e_post
1087    o Added new equation of state -> MDJWF
1088      - EOS of McDougall et al., 2002, JAOT, submitted
1089      - caveat: the equation of state is only valid for a smaller (more
1090        realistic?) range of values than JMD95P/Z and UNESCO
1091      - added masks to the calculation of pressure in store_pressure
1092      - added more check values for density in check_eos (ini_eos.F), some of
1093        the old check values are out of the range of the MDJWF-eos, so don't
1094        expect perfect matches for those
1095    checkpoint46e_pre
1096    
1097    checkpoint46d_post
1098    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1099      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1100      case of pressure coordinates. eosType='JMD95Z' in
1101      combination with buoyancyRelation='OCEANICP' now causes an error.
1102    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1103      in find_alpha/beta.
1104    checkpoint46d_pre
1105    
1106    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1107      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1108    
1109    checkpoint46c_post
1110    o Changes necessary for ocean in p-coordinates
1111     -  Added new buoyancy relation = 'OCEANICP'
1112     -  Added new parameters = gravitySign (this used to be contained inside
1113        the factor dRdZ which I added when we first switched to R coordinates).
1114     X GM/Redi is not compatible (yet)
1115     X bottom drag and no-slip need to be debugged.
1116    checkpoint46c_pre
1117    
1118    checkpoint46b_post
1119    o Added new equation of state -> JMD95Z and JMD95P
1120      - EOS of Jackett and McDougall, 1995, JAOT
1121      - moved all EOS parameters into EOS.h
1122      - new routines ini_eos.F, store_pressure.F
1123    o Added UNESCO EOS, but not recommended because it requires
1124      in-situ temperature (see JMD95)
1125    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1126      unesco.f to be used with POLY3
1127    checkpoint46b_pre
1128    
1129    checkpoint46a_post
1130    o Added (atmospheric) pressure loading
1131      - new field in FFIELDS.h, etc...
1132      - new cpp flag ATMOSPHERIC_LOADING
1133    o Changed hFacC to _hFacC in calc_phi_hyd.F
1134    o Added SHORTWAVE_HEATING to some files for consistency
1135    checkpoint46a_pre
1136    
1137    checkpoint46
1138    further merges from release1_p5
1139    o new ctrl package
1140      - adopted from ECCO environment to enable optimization
1141      - added Eliassen Palm fluxes to controls
1142    o added Eliassen Palm flux controls to gradient check package
1143    o cost package
1144      - Compatible with new ctrl package
1145      - added Eliassen Palm cost hooks
1146      - modif's of existing cost functions
1147    o Adjoint-related bug fixes in kpp:
1148      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1149      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1150    o autodiff package
1151      - flow directives:
1152        + new for S/R do_the_model_io
1153        + enhanced for S/R checkpoint
1154        + new gmredi.flow
1155      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1156        disable adcommon.h/g_common.h by default.
1157      - fixed problem for adjoint of global_max
1158    o modified verification/carbon/
1159    o New setup for adjoint of global_ocean
1160    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1161    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1162    o incorporated hooks for sponge layer code (external_forcing.F)
1163    
1164    checkpoint45d_post
1165    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1166    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1167      (affects plume_on_slope "cg2d" output)
1168    o add new parameter deltaTfreesurf for free-surface time stepping
1169    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1170    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1171    o change phiMin in exp1 (to agree with documentation)
1172    o add new flags:
1173     - T,S forcing inside/outside Adams-Bashforth
1174     - turn off temp,salt advection and/or forcing
1175     - for each tracer, define internal flag for multiDimAdvection & A-B
1176    o monitor: change definition of KE to check conservation of Energy
1177    
1178    checkpoint45c_post
1179    o Removed f90 comments ("!")
1180    o Modified initialisations to enable exf package for MITgcm
1181      (without invoking ECCO_PACKAGE).
1182    o modifications to gradient check package (Martin Losch)
1183      - enable centered differences
1184      - modified format of standard output
1185    
1186    checkpoint45b_post
1187    o cleaned exchange calls in cg2d
1188    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1189    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1190      to configure barotropic setup (Martin Losch)
1191    o moved some initialisations within bi,bj loop in dynamics
1192      (TAF flow dependency)
1193    o in initialise_varia, moved call packages_init_variables
1194      before convective_adjustment_init
1195      (corresponding adjustment of TAF tape initialisation).
1196    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1197    
1198    checkpoint45a_post
1199    o compute Rho over the whole domain (extend iMin,jMin indices)
1200    o specific exchange for X-slice domain (case Ny=1)
1201    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1202    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1203    
1204    checkpoint44h_post = checkpoint45
1205    o Fix to restore differentiability:
1206      place at which packages_init_variables is called in
1207      initialise_varia is crucial for reverse control flow.
1208    o modifications in GMRedi to enable stable adjoint
1209      (corresponding modif's in thermodynamics, dynamics)
1210    o added missing hook for sponge layer code in external_forcing
1211    o modified test cost functions
1212    o storing in gad_advection (plus removal of write(0,*)!
1213    o missing headers TR1.h added in convective_adjustment routines
1214    o errorMessageUnit set non-equal zero in eeboot
1215      (conflict on some platforms, e.g. IBM SP3)
1216    o modified carbon verif.
1217    
1218    checkpoint44h_pre
1219    o vertical grid option: allow to put the Interface at the middle between
1220      2 cell-centers ; replace delZ in pkg/kpp by drF.
1221    o GM Advective form: Tracers are advected using the residual transport (=
1222      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1223    
1224    checkpoint44g_post
1225    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1226      results) ; ifdef missing in thermodynamics.F
1227    
1228    checkpoint44f_pre,checkpoint44f_post
1229    o added PTRACERS package
1230      This allows an arbitrary number of passive tracers to be integrated
1231      forward simultaneously with the dynamicaly model.
1232      + Implemented so far:
1233        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1234        - I/O and checkpointing
1235        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1236      + Not implemented so far:
1237        - KPP
1238        - OBCS
1239      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1240        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1241        line in data.pkg.
1242      + This package is disabled by default since it increases storage.
1243    
1244    
1245    o testscript: added -cleanup option
1246    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1247                 b) enable to filter 2D fields.
1248    
1249    checkpoint44e_pre,post
1250    o re-wrote convective adjustment to use pre-calculated weights
1251      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1252      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1253      Original calls to convect() still in place.
1254    
1255    chkpt44d_pre,post
1256    o added missing EXCLUDE_MONITOR flags
1257    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1258      (incompatible typ in MIN/MAX expressions caused problems
1259      on IBM SP3)
1260    o in genmake added variable MAKEDEPEND
1261      plus resetting for case SunOS
1262    o added timer_stats.c routine for IBM SP3
1263    o removed variables in dynamics
1264    !!! I forgot to create tag chkpt44d_pre !!!
1265    !!! But chkpt44d_pre = chkpt44c_post    !!!
1266    
1267    o real fresh water flux implemented with non-linear free-surface.
1268    
1269    chkpt44c_pre,post
1270    o few fix (mask in shap_s2, EmPmR in external_field_load,
1271      USE_NATURAL_BCS in solve_for_P);
1272    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1273    
1274    checkpoint44b_pre/_post
1275    o merge of relevant stuff from the ecco-branch:
1276      - genmake: removed $S64 overwrite for case SunOS
1277      - pkg/exf: update and corrections for field swapping and obcs
1278      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1279                  harmonized between ECCO and MITgcm
1280      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1281                      updated checkpointing_lev... lists for obcs
1282      - model/src: minor changes in forward_step, plot_field
1283                   added directive for divided adjoint in the_main_loop
1284      - pkg/mdsio: added mdsio_gl_slice
1285    
1286    o check parameters & config (chkpt44a_pre,post)
1287    o OBC and NonLin_FrSurf.
1288    
1289    checkpoint44
1290    o fix bug in mom_vi_del2uv
1291    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1292    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1293    o update AIM experiments (NCEP input files)
1294    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1295    o added some stuff for AD
1296    
1297    checkpoint43
1298    o added two new advection tests
1299    o added global 4x4 degree ocean test
1300    o added test of H&S94 with free surface on cube
1301    o some final mods for gradient check, adjoint,...
1302    
1303    checkpoint42
1304      Fixed AD-related problems:
1305    o Store directives up-to-date with re-arranged Adams-Bashforth
1306      (mainly thermodynamics.F)
1307    o New store directives for multi-dim. advection schemes
1308      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1309      * new common block and key passkey
1310      (mainly gad_advection.F)
1311    o Modified store directives for split of dynamics/thermodynamics
1312      for the case ALLOW_KPP
1313    o Cleaned argument list for timestep_tracer.F
1314    
1315    checkpoint41
1316    o re-formatted/added comments in prologues of key subroutines
1317      to work with protex
1318    
1319    checkpoint40
1320    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1321    o added FLT (floats) package from Arne along with demo. experiment
1322    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1323      implementation of forward-in-time forcing terms
1324    o more mods for non-linear free-surface including new variable
1325    o modified multi-dim method to work on cube
1326    o bug fix in KPP (from DM)
1327    
1328    checkpoint40pre9
1329    o added DST advection schemes
1330    o fix MPI bug on SGI's
1331    o modifications for non-linear free-surface
1332    o fixed conditionals for fixed flow/passive tracer only mode
1333    o added tension/strain form of stress tensor
1334    o changes to commenting of arguments for TAF/TAMC
1335    o added/updated many matlab scripts
1336    o added multi-dimensional advection method for tracers
1337      
1338    checkpoint40pre8
1339    o new package rw/
1340      Added method for dumping intermediate local arrays:
1341      mdsio_writetile - same as mdsio_writefield except works from inside
1342                        bi,bj loop
1343      mdsio_writelocal - same as mdsio_writetile except works for local
1344                         arrays
1345      write_local_r? - higher-level wrapper for mdsio_writelocal
1346      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1347      Example given at end of mom_vecinv.F that dumps some local arrays.
1348    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1349      control flux-form versus vector invariant code.
1350      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1351      or genmake -DISABLE ...
1352    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1353      (additional storing is now needed for case vecinv;
1354      currently nothing implemented to switch this storing off
1355      in case fluxform is used since no CPP flag available).
1356    
1357    checkpoint40pre7
1358    o bug fix in dynamics.F
1359      calc_viscosity called before k=1,Nr loop.
1360    o added some #ifdef's ALLOW_PASSIVE_TRACER
1361    o cleaned initialisations in ctrl_map_ini
1362      related to TAF
1363    
1364    checkpoint40pre6
1365    o split dynamics into thermodynamics & dynamics
1366    o corresponding split of calc_diffusivity into
1367      calc_diffusivity, calc_viscosity
1368      (kpp_calc_diff, kpp_calc_visc).
1369    o Added diffkr, kapgm to control variables
1370    o bug fix in gmredi_slope_limit for ldd97
1371    
1372    checkpoint40pre5
1373    o proper initialization of Adams-Bashforth time stepping
1374      + uses forward step for very first step of model (iter=0)
1375    o re-generated *all* output since almost all output is modified by this
1376      change (sorry but we've been putting this one off for about 2 years)
1377      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1378        *not* regenerated since they are already out of date and I don't
1379        want to create the impression that they are suddenly working.
1380    o removed KAP stuff for DEC's
1381    o modified/added many .cvsignore files in */code and */input
1382    o added new expt "solid-body.cs-32x32x1"
1383      + this uses an alternative form of ini_curvilinear_grid.F which
1384        is not necessarily any better than the current one...
1385    
1386    checkpoint40pre4
1387    o added re-initialisations of utrans,vtrans,rtrans in
1388      calc_common_factors which are crucial for TAF.
1389    o extended iMin,jMin range for calc_common_factors,
1390      calc_diffusivity
1391    o added option ALLOW_PASSIVE_TRACER
1392    o a few minor updates and fixes
1393    
1394    checkpoint40pre3
1395    o created calc_gtr1.F for gad package
1396    o split the_main_loop and re-introduced forward_step
1397    o some recomputations of nIter0 for TAMC
1398    
1399    checkpoint40pre2
1400    o Updated to latest branch of AJA, JMC
1401    o Added gradient check package
1402    o Added routines for passive tracer handling
1403    o Added carbon sequestration sensitivity experiment
1404    
1405    checkpoint39
1406     o Modifications and fixes to support TAMC
1407       (mainly missing or wrong directives)
1408     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1409       in addummy_in_stepping
1410     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1411     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1412     o Included following packages:
1413       cal: calendar
1414       exf: external forcing
1415       ecco: essential routines to control use of cal, exf
1416             (NB: this is not the full ECCO environment)
1417     o disabled some packages by default in genmake
1418    
1419    checkpoint38
1420     o see notes_c37_adj.txt
1421     o corrected wrong layer index in external_forcing_t
1422     o replaced the_main_loop/forward_step by the_main_loop
1423     o removed forceoutput from write_state
1424       (replaced criteria for initial/final state)
1425     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1426    
1427    checkpoint37
1428     o mdsio.F routine split and packaged in pkg/mdsio
1429       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1430        used unless genmake -disable=mdsio)
1431     o allow a more precise surface-geopotential gradient for the atmosphere
1432       taking into account the change in space of Alpha (=1/rho) at the surface.
1433     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1434       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1435     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1436       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1437       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1438     o Time-Average diagnostics defined as a pseudo package "timeave".
1439     o pickup files : old pickup (before c35) did not work with new code (c35
1440       and after) unless activating 2 commented lines in initialise-varia.
1441     o Non-Hydrostatic pickup file Pb fixed.
1442     o bug with Rigid-lid version (since c35) fixed.  
1443    
1444    checkpoint36
1445     o implement Crank-Nickelson barotropic time-stepping
1446     o recover Time-Average diagnostics
1447     o fix Pb in checkpoint (PR#19)
1448     o AIM become a standard package ; clean unused CPP_kees
1449    
1450    checkpoint35
1451     o subtantial rewrite of dynamics.f
1452     o allows staggered time-stepping
1453     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1454     o added bottom drag (linear + quadratic)
1455    
1456    checkpoint34
1457     o Modified exchange routines for correct reverse simulation.
1458     o Added verification output to comply with bug fix in impldiff.F
1459       as of c33 (exp2, natl_box).
1460     o Corrected store directives in dynamics.F
1461     o Corrected array boundaries in impldiff.F
1462     o Corrected array dimensions in gmredi.
1463       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1464     o Added routine GLOBAL_SUM_INT to global_sum.F
1465     o Added mdsio_gl.F for ECCO purposes.
1466    
1467    checkpoint33
1468     o Fixed bug in lower BC in impldiff.F
1469     o Fixed confusion about units of forcing arrays in FFIELDS.h
1470       namely Fu,Fv,Qnet,Qsw,EmPmR:
1471       - Removed verification/natl_box/code/external_fields_scale.F
1472         (did not differ from that in model/src)
1473       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1474         (see FFIELDS.h for description)
1475       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1476         kpp_calc.F and kpp_transport_t.F
1477       - Removed model/src/external_fields_scale.F and calls to it
1478       - verification/natl_box uses flux data with "atmospheric" sign so
1479         a special version of external_fields_load.F is used to
1480         change the data as it's read in. This way, the arrays
1481         have the right units and signs at all times tha a user could
1482         possibly use them.
1483     o Corrected genmake to delete a temporary file during configuration
1484    
1485    checkpoint32
1486     o Scaling of forcing fields moved from external_forcing.F to
1487       external_fields_scale.F, called directly after loading fields.
1488     o Surface relaxation terms added to surface tendency fields in
1489       extra subroutine.
1490     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1491       fields.
1492     o Changes in GMRedi to comply with packaging structure.
1493     o Modifications and bug fixes in KPP package.
1494     o Verification experiment for KPP added (verification/nat_box/)
1495    
1496    checkpoint31
1497     o Packages interface brought in line with defined standard
1498       -> new routines packages_...F
1499       -> changes in initialise_fixed.F, initialise_varia.F
1500       -> enables initialisation interface for ECCO package
1501     o Rescaling of external forcing fields immediately after read
1502       (removed from external_forcing.F)
1503       -> new: surface_fields_scale.F
1504       -> affects ini_foorcing.F, external_fields_load.F
1505     o Computation of surface tendencies before tendency updates.
1506       -> new: external_forcing_surf.F
1507     o Change of variable names useGMRedi, useKPP, useECCO
1508     o Further changes in dynamics.F, impldiff.F for TAMC
1509     o Tested for experiments 0, 2, 4.
1510       - not yet tested for GMRedi.
1511       - not yet tested for KPP.
1512    
1513    checkpoint30
1514     o Updates for OBCs
1515     o New experiment for test OBCs (internal_wave)
1516     o New output.txt in verification/exp4/results/
1517     o Updates for KPP: calculation of viscosity corrected, new variables
1518       kpp_dumpFreq and kpp_taveFreq
1519     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1520       and entry for T90 in genmake
1521    
1522    checkpoint29
1523     o packaged KPP and GM/Redi
1524    
1525    checkpoint28
1526     o Corrected initialization of hFacMin for difference vertical coordinates
1527     o Modified calculation of partial cell thickness to more robust algorithm
1528     o config_summary.F: replaced write_1D_... by write_0D_...
1529       read_write.F: added subroutines write_0D_...
1530     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1531       included some initialisations required for TAMC.
1532     o routine calc_isoslopes: modified sqrt computation to make it
1533       differentiable for zero argument.
1534     o routines dynamics, impldiff:
1535       included store directives and tape key computations required for TAMC.
1536     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1537    
1538    checkpoint27
1539     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1540       formulation works properly with variable resolution.
1541     o restructured the calling tree between the_model_main() and dynamics()
1542     o split initialise() into initialise_fixed() and initialise_varia()
1543     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1544       in new routine ini_psurf()
1545    
1546    checkpoint26
1547     o moved some #ifdef in optional routines to encompass everything
1548       except the argument declarations. This was using up some memory.
1549     o fixed macros like _ADT to work with both versions of Linux cpp
1550     o cleaned up some unused and uninitialized variables
1551       (helps when debugging with strict compile options)
1552     o split up CPP_EEOPTIONS.h into options and macros
1553       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1554     o patch for 2 processor JAM mode
1555    
1556    checkpoint25
1557     o updates for OBCs and NH
1558     o dramatically reduced memory usage
1559     o added "JAM" routines for use on Artic network
1560     o parameterization of convection by implicit vertical diffusion
1561     o added a diagnostic of convective index
1562     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1563       (this is was partly for OBCs and NH but also in anticipation of
1564        an explicit free-surface option)
1565     o initial state input files for U and V
1566    
1567    checkpoint24
1568     o Removed some spurious "REAL"s
1569     o Updated KPP to latest version from JPL
1570     o Added a COS(latitude) in horizontal viscosity
1571    
1572    checkpoint23
1573     o Added del^4 diffusion for salt and temperature
1574     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1575    
1576    checkpoint22
1577     o Made many small changes: implicit none, format(i5), etc...
1578     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1579    
1580    checkpoint21
1581     o Introduced new I/O package that supports direct-access records (mdsio.F)
1582     o Split-up mid-level I/O routines
1583     o Updated input data for experiments 0,1,2,4 and 5
1584     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1585    
1586    checkpoint20
1587     o Tidied up open-boundaries some more
1588     o Added non-hydrostatic code
1589     o Fixed some input data
1590     o Modified MPI start-up to work in "coupled" context.
1591    
1592    checkpoint19
1593     o Tidied up directory structure for verification experiments.
1594     o Added new code for open boundaries.
1595     o Corrected advective terms near boundaries.
1596     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1597     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1598     o Split default parameters out of ini_parms.F into set_defaults.F.
1599    
1600    checkpoint18
1601     o Further changes for optional code generation with
1602       CPP - ugh!
1603    
1604    checkpoint17
1605     o Beginning to incorporating modularity
1606       for supporting atmos. and ocean configs.
1607     o Small changes for TAMC complinace
1608     o New ultra simple test case. Barotropic box
1609       configuration "exp0".
1610    
1611    checkpoint16
1612     o Minor changes to exchange routines to support
1613       accumulation in reverse mode. Adjoint of an
1614       assignment is an addition.
1615     o Changes to support compilation by TAMC (LR(1)
1616       syntax) and by g77 under Linux ( 72 character
1617       limit ).
1618    
1619    checkpoint15
1620     Rewrote exchange routines to allow
1621     o General tile <-> tile connectivity.
1622     o TAMC reverse mode flag ( is this really needed? )
1623     o Variable width overlap and exchange region widths.
1624     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1625       shmput/shmget, VIA, SYSV shmem and every other cool
1626       communication method.
1627    
1628  checkpoint14  checkpoint14
1629   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
1630   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.

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