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revision 1.10 by cnh, Wed Jul 8 15:40:09 1998 UTC revision 1.257 by heimbach, Mon Feb 23 19:19:15 2004 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52k_post
7    o removed top-level directory "diags"
8      - we migrated these functions to pkg/timeave a long time ago
9    o fixed bug introduced in pkg/monitor
10    o accuracy ctrlprec = 32 insuffient for gradient checks using
11      averaged fields (I/O via cost_averages)
12      -> use ctrl.h in active_file*.F to control I/O precision.
13    o paramter list of CALL ADTHE_MAIN_LOOP
14    o added initial do_the_model_io to ecco
15    o set all ...Freq to zero after cost_final
16      taveFreq, dumpFreq, pChkptFreq
17    
18    checkpoint52j_post
19    o fix nchklev in tamc.h for global_ocean...
20    o Bringing flow and store directives up-to-date
21    o Really weird thing!
22      call do_the_model_io from the_main_loop with parameters
23      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
24      TAF places a faulty re-call of initialise_varia
25      after cost_final call which should not be there!
26    checkpoint52j_pre
27    
28    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
29      error messages
30    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
31    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
32      debug output
33    o modfied mdsio_writefield.F to handle non-global files under exch2
34    o update AIM Cubed-Sphere exp (aim.5l_cs):
35      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
36    o update AIM Equatorial Channel exp:
37      use standard aim_v23 pkg and change the SST fields to be more realistic.
38    o globalFile now works with exch2
39    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
40      mon_vort3.F to make exch2 friendly with >1 tile per cube face
41    o limit timeave output for hi-res integrations
42    
43    checkpoint52i_post
44    o removed CPP_EEOPTIONS.h from verification/*/code
45    o updated the tiling for global_ocean_pressure
46    checkpoint52i_pre
47    
48    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
49      the old pkg/aim).
50    
51    checkpoint52h_pre
52    o shortened offending lines in exch2_send_rx?.template
53    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
54    o genmake2: add build & execute test for NetCDF code
55    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
56      old grid files, moved CPP_EEMACROS.h to pkg/exch2
57    o added useSingleCPUIO flag to monitor.F and mon_out.F
58    o added temporary hack for sea-ice dynamics on the cube:
59      metric terms are ignored and it is assumed that
60      there is no sea-ice on cube faces 1, 2, 4, and 5.
61    
62    checkpoint52f_post
63    o added exch2 cube routines to pkg/exch2
64    o modified hs94.cs-32x32x5 to use it
65    o added new grid files to hs94.cs-32x32x5
66    checkpoint52f_pre
67    
68    checkpoint52e_post
69    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
70      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
71    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
72      to work with implicit vertical advection and AB ;
73    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
74    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
75     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
76    checkpoint52e_pre
77    
78    o fix bug in impldiff when Nr=1 or Nr=2.
79    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
80    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
81    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
82      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
83    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
84    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
85    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
86    
87    checkpoint52d_post
88    o re-tiled many expts to allow comparison in multi-processor mode
89      - updated output accordingly
90      - changed hs94.128x64x5 to use intial T from file rather than use the
91        random number generator
92    o add infrastructure in model routines for fizhi and gridalt packages
93    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
94    o changes to permit hi-res, cubed-sphere, configuration
95      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
96      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
97      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
98        of surface winds for the cube
99      (A verification experiment, based on global_ocean.cs32x15, but with
100       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
101       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
102       complete with example surface forcing files and matlab scripts to look
103       at the output and compare it with that of global_ocean.cs32x15.)
104    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
105       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
106       to conform to the common rule.
107    o check-in the first version of the coupler + interfaces for multi-components
108       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
109       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
110       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
111       - ocean and atmos. share the same horizontal grid (no interpolation).
112       - exchanges between component and coupler is done in forward_step
113    o new verification experiment, cpl_aim+ocn:
114       coupled ocean - AIM atmosphere on cs32 grid.
115    
116    checkpoint52d_pre
117    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
118    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
119    
120    checkpoint52c_post
121    o Fixing OPTIONS files for use of exf:
122      - ALLOW_ECCO not needed
123      - ECCO_CPPOPTIONS.h should not be included from
124        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
125        as has been the case in the past
126      - All cal/exf related options are currently set in
127        single header file. Should remain so until we
128        agree on a consistent new policy.
129    o Removed all CPP options for cal package.
130      cal has no more CPP options.
131    o modified STOREs in GAD_ADVECTION
132    o corrected key comp. for passkey
133    
134    checkpoint52b_post
135    o new version: "thsice" of thermodynamic sea-ice pkg:
136     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
137     - modify fluxes but do not change theta directly;
138     - light cleaning of bulk_force pkg (still needed with thsice).
139     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
140       + output_thsice.txt to test thsice & bulk_force pkgs.
141    o put back grid & coriolis monitor output.
142    checkpoint52b_pre
143    
144    o call "do_the_model_io" at the beginning (=> dump initial state)
145    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
146    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
147      (need info on NUMBER_OF_PTRACERS)
148    o missing PTRACERS headers in some routines
149    o default tamc.h in pkg/autodiff supposed to crash
150      to ensure proper customization
151    
152    checkpoint52a_post
153    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
154      - moved surfaceTendencyTice from pkg/seaice to main code
155      - subroutine FREEZE_SURFACE now limits only surface temperature
156        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
157        => new output.txt for global_ocean.cs32x15 & global_with_exf
158      - keep the old version of FREEZE for backward compatibility;
159        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
160      - corresponding modifs for TAF directives
161    o added surface flux output variables to TIMEAVE_STATVARS
162    o time-averaged output for pkg/ptracers
163    o fix problem with ECCO-related divided adjoint
164      snapshot file was missing some ad-variables,
165      but no warning issued by TAF
166    
167    checkpoint52a_pre
168    o some bug fixes for #undef REAL4_IS_SLOW
169    
170    checkpoint52 = ecco_c52_e35
171    o after testing adjoints of checkpoint51u_post
172    
173    checkpoint51u_post
174    o this is the post-merge tag of the ecco-branch
175      (needs another clean checkout and re-testing)
176    o various natl_box_adjoint configs and results
177      but no input fields
178    o obcs adjoint not yet merged!
179    o adding ECCO global 1x1 and 2x2 degree configs
180    o updated/extended some store directives for seaice
181    o pkg/ecco now containes ecco-specific part of cost function
182    o top level routines the_main_loop, forward_step
183      supersede those in model/src/
184      previous input data.cost now in data.ecco
185      (new namelist ecco_cost_nml)
186    o in ctrl/ cleaned some cross-dependencies and updated CPP options
187    
188    checkpoint51t_post
189    o this is the pre-merge tag of the ecco-branch
190    
191    checkpoint51s_post
192    o cleanup: removed various obsolete #define-s
193    o pkg/grdchk
194      - renamed 'ph-grd 3' to 'grad-res'
195      - merged from ecco-branch
196        (remaining bug fixes for obcs gradient checks)
197      - additional high-precision output for testreport
198        (grep for 'precision_grdchk_result')
199    
200    checkpoint51r_post
201    o cleaned up or removed CPP_OPTIONS.h files
202    o updated results for some of the tests to reflect the new
203      optfiles (-ieee: -O0 instead of -O3)
204    
205    checkpoint51q_post
206    o cd_code:
207      - moved cd_scheme.F -> cd_code_scheme.F
208      - separate read_checkpoint from cd_code_ini_vars.F
209      - separated cd_code part from write_checkpoint
210      - updated AD_SOURCE, generated .flow
211      - added CD_CODE_VARS.h to the_main_loop
212      - Moving cd_code specific store dir.s to pkg/cd_code
213    o ctrl package totally restructured
214      - pack/unpack now optional and decoupled from
215        xx_/adxx_ I/O
216      - ctrl_pack/unpack cleaned
217        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
218      - confined inclusion of AD_CONFIG.h to where necessary.
219    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
220    
221    checkpoint51p_post
222    o create initial cd_code package
223      - WARNING: the initialization of fields within packages
224        is broken because INI_FIELDS (where READ_CHECKPOINT is
225        called) is called *before* PACKAGES_INIT_VARIABLES.
226        This seems to be backwards since
227        1) its important to initially zero the entire field including
228           the "halo" region
229        2) zeroing needs to be done *before* reading pickup info
230           and the pickup call might or might not happen in any
231           particular run
232      - this needs an overhaul for R2
233    o cleanup verification/*/code/GMREDI_OPTIONS.h
234    o cleanup testreport
235    
236    checkpoint51o_post
237    o bringing AD-related verif's up to date with genmake2
238      - carbon/
239      - global_ocean.90x40x15/
240      - hs.94.1x64x5/
241      - (front_relax/ )
242    o (more) consistent directory structure for AD-related verif.'s
243    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
244    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
245    o bug fix in find_alpha.F for MDJWF:
246      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
247        change rho -> rho-rhoConst
248      - replace call find_rho to find_rhonum
249    o initialisation of rFlx extended to full array (required by TAF)
250      and shifted to thermodynamics
251    o removed PTRACERS.h in ptracers routine
252    o added surfacetendencyPtr to S/R parameter list pracers_forcing
253    o Correcting initialisations for fVerU, fVerV.
254    o helping TAF to recognize dependency on kUp for
255      fVerU, fVerV
256    o Replacing delZ by delR in pkg/ctrl/
257    checkpoint51o_pre
258    
259    o undid all of cp51 pending some cleanups and discussion
260    o added the [#include "AD_CONFIG.h"] statement to all files that need
261       it for adjoint/tl #defines
262     o re-worked the build logic in genmake2 to support AD_CONFIG.h
263     o removed tools/genmake since it no longer works
264    
265    checkpoint51n_post
266    o modifications to make FREEZE flux visible to pkg/kpp
267      - moved surfaceTendencyTice from pkg/seaice to main code
268      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
269      - subroutine FREEZE now limits only surface temperature
270        (this means new output.txt for global_ocean.90x40x15,
271         global_ocean.cs32x15, and global_with_exf)
272    o added surface flux output variables to TIMEAVE_STATVARS
273    
274    checkpoint51n_pre
275    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
276    o added [#include "AD_CONFIG.h"] to all files that use the following
277      defines:
278      - ALLOW_ADJOINT_RUN
279      - ALLOW_TANGENTLINEAR_RUN
280      - ALLOW_ECCO_OPTIMIZATION
281    
282    checkpoint51m_post
283    o incorporating changes to get TAMC/TAF working in genmake2
284      - added new TAMC/TAF targets to the Makefile
285      - various cleanups related to package handling
286      - these changes should have no impact on the forward model
287    
288    checkpoint51l_post
289    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
290     - faster algorithm for cal_addtime.F
291     - higher precision arithmetic, where needed
292     - pkg/exf *startdate variables changed from calendar date to
293       model integration time
294    
295    checkpoint51l_pre
296    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
297    o enable to apply restoring on S & T only in a latitude band.
298    o update output (external_forcing_surf modif. change truncation errors)
299       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
300    
301    checkpoint51k_post
302    o change default to: useNHMTerms=.FALSE.
303     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
304       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
305     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
306        exp1, ideal_2D_oce
307     - change data file of oceanic exp (leave the results unchanged for now)
308       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
309    o set gravitySign automatically according to the vertical coordinate used
310      (and change sign: back to "logical" value: +1 when R increases downward)
311    o added an include barrier to the default CPP_OPTIONS.h and
312      removed the #include "PACKAGES_CONFIG.h" from it
313    o fix a bug in mom_fluxform (from chk51j_post)
314    
315    checkpoint51j_post
316    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
317    o adjusted some flow directives (dynamics, thermodynamics)
318    o added cubed-sphere case to test cost function
319    o heckpoint_lev?_directives.h now include
320      pkg-specific directives, whenever those are enabled.
321    o Moving pkg-specific flow directives to corresponding pkg
322      Moving pkg-specific differentiation list to corresponding pkg
323      Moving pkg-specific checkpoint-lev storing to corresponding pkg
324      ---> conventions are
325           - pkg_ad.flow
326           - pkg_ad_diff.list
327           - pkg_ad_check_lev?_dir.h
328    
329    checkpoint51i_post
330    o merge of the branch-genmake2
331      - knowingly breaks the older genmake
332      - automatic generation of all ALLOW_${PKG_NAME} defines
333      - new testreport supersedes older testscript
334    o large number of package inclusion and header cleanups
335    checkpoint51i_pre
336    
337    o new output for adjoin of global ocean vector invariant
338    o fix for checkpoint of thermodynamic seaice and bulk_force
339    o Steph gchem various cleanups
340    
341    checkpoint 51h_pre
342    o fixed some single quotes
343    o modify gchem pkg to be more versatile
344    o modifications to clean up dic pkg
345    o add pkg/cfc
346    
347    checkpoint51g_post
348    o provide links for ARPACK and ADM*TLM
349    o start removing verification/vero/
350    o update AD-related stuff
351      (in particular some IF-statements in model/src/ routines)
352    o adding to verification/global_ocean.90x40x15/ adjoint of
353      vector invariant setup
354    
355    checkpoint51f_post
356    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
357    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
358      of tracer Green's fucntions for ocean inversion project.
359    
360    checkpoint51f_pre
361    o Added on-the-fly spatial interpolation capability
362        "USE_EXF_INTERPOLATION" to pkg/exf.
363      - This is a temporary Cartesian-grid hack until
364        the super-duper ESMF coupler becomes available.
365      - See verification/global_with_exf/README for usage example.
366      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
367        flags and modified pkg/seaice accordingly.
368    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
369        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
370        non-local transport term.
371    
372    checkpoint51e_post
373    o pkg/mom_vecinv:
374      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
375      - add time-ave diagnostic of vorticity advection.
376    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
377    o atmospheric geopotential: - include water vapor effect;
378                                - use p^kappa in p* scaling.
379    o land pkg: read initial state from files.
380    o AIM : add stratospheric drag in the upper level
381    
382    checkpoint51d_post
383    o change function ILNBLNK (=> last non-blank char.) to return zero
384      (instead of the string length) when the string. char is empty
385    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
386    o modif's to restore TAMC compatibility
387      - avoid "_d" constructs in PARAMETER declarations
388      - avoid interrupting lines by comment lines
389    o Use cluster local disks for purely local I/O
390      vs. globally visible disks needed for ctrl stuff
391      (merged from ecco-branch)
392      - new active_file_loc... and mdsio_..._loc routines
393      - affected packages: autodiff, ctrl, grdchk, mdsio
394    
395    checkpoint51c_post
396    o introducing integer flag debugLevel
397      - debLevZero: suppress all output
398      - debLevA: standard
399      - debLevB: equivalent to current debugMode=.TRUE.
400    o introducing pathname variable mdsioLocalDir for mdsio
401      that can be specified at runtime
402      (relevant for cluster I/O to local disk)
403    `
404    >>>checkpoint51b_post
405    adjoint of ptracers
406    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
407    o extended state in checkpoint_lev?, etc.
408    o alternative ctrl/cost with tr1 or ptracer
409    o new comlev1_bibj_ptracers
410    o new ptracers.flow
411    o made ptracers_forcing same as external_forcing_s
412    o added verification for adjoint with ptracers
413      - adm. grdchk fail so far
414      - tlm. grdchk OK
415      - checked tapelev/comlev recomputations: OK
416    <<<checkpoint51b_pre
417    
418    checkpoint51a_post
419    o added code for biogeochemistry package
420      - new pkgs: dic, gchem
421      - new subroutine in ptracers
422    o modify code for biogeo packages
423      - in model/src and pkg/ptracers
424    
425    checkpoint51
426    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
427      - autodiff, ctrl, exf, grdchk, seaice
428      kept separate packages
429      - cost, ecco, obcs
430    o updating verification/internal_wave, verification/lab_sea
431      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
432    
433    checkpoint50i_post
434    o Preparing next differentiable checkpoint and sync
435      of MAIN vs. ecco-branch
436      - 1st step: this one is differentiable
437      - 2nd step: next(! not this) checkpoint will have updated packages
438                  from ecco-branch)
439    
440    checkpoint50h_post
441    o new package "land": provide surface BC for AIM.
442    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
443    o AIM: use true log-P extrapolation for near surface temp (= as in
444        F.Molteni paper) ; update aim.5l_cs output.
445    o New variable in PARM03 for more flexible pickups
446    o somewhat cleaned package initialisation sequence for
447      ctrl/ cost/ ecco/ in packages_... routines
448    
449    checkpoint50g_post
450    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
451      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
452      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
453        made the default because of faster convergence than ADI
454    
455    checkpoint50f_post
456    o exf totally restructured
457      - replaced all exf_set_ routines by one generic exf_set_gen.F
458        and made sure it's still differentiable
459      - split exf_getffields.F into new exf_bulkformulae.F
460      - exf_inscal_/exf_outscal_ suffixes consistent with field names
461      - updated adjoint/makefile and relevant verif. accordingly
462    
463    checkpoint50f_pre
464     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
465          + change Evap over land. (update aim.5l_cs output)
466     o added missing .cvsignores and made uniform across expts
467     o changed configuration of tidal_basin_2d expt
468     o added pkg/debug functions for tracing code in fatal crashes
469     o tidied pkg/monitor to use MONITOR_OPTIONS.h
470     o new fn in pkg/monitor to stop model if solution grows too big
471     o removed lots of single quotes from comments
472    
473    checkpoint50e_post
474    o make KPP work with PTRACERS
475     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
476       nearly a copy of kpp_transport_s
477     - there is no analogue to SurfaceTendencyS, so I have to use
478       gPtr(of the surface layer) instead
479    o add a new platform SunFire+mpi (SunFire 15000) to genmake
480    checkpoint50e_pre
481    
482    checkpoint50d_post
483    o change kpp output from multiple-record state files to single-record state
484      files analogous to write_state.F
485    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
486      analogous to the cg2d-related output.
487    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
488      so that writing to internal file fn (with length 512) fails.
489    checkpoint50d_pre
490    
491    checkpoint50c_post
492    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
493    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
494    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
495    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
496    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
497    
498    checkpoint50c_pre
499    Merging from release1_p13:
500    o bug fix for pkg/seaice dynamic solver
501    o Added SEAICE_initialHEFF to pkg/seaice
502    
503    checkpoint50b_post
504    o store u*,v* in gU,V instead of in guNm1,gvNm1
505    o in order to put the momForcing out of the Adams-Bashforth:
506      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
507      to timestep.F
508    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
509    o re-generate output for highly sensitive test-exp:
510       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
511    
512    checkpoint50b_pre
513    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
514    o corrected CPP option mismatch in exf_Bulk... functions for case
515      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
516    
517    checkpoint50a_post
518    o Bug fix for merging between c50 and KPP.
519      ikey was passed from thermodynamics to kpp_calc via
520      common block rather than being recomputed in kpp_calc,
521      in contradiction with new key itdkey.
522      New key ikppkey created, and tamc.h headers updated.
523    
524    checkpoint50
525    - 2nd step of merge with ecco-branch:
526      merge changes in ecco-branch back into main trunk
527    - bug fix in find_alpha
528    - more storing in gmredi_calc_tensor.F, kpp_routines.F
529    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
530    - merged some sliced AD support routines
531    
532    checkpoint49
533    merged from ecco-branch:
534    o exf:
535      - Enable initialisation of forcing fields to constant
536        (runtime) values.
537      - in exf_getffields.F
538        Reduce i-/j-loop to interior domain, discarding overlaps.
539        That also fixes wrong TAF-key computations for key_1, key_2
540        with bulf formulae.
541      - exf_init.F modify #ifdef for exf_init_evap
542      - exf_getffieldrec.F, ctrl_getrec.F
543        The following INT-usages are not safe:
544          fldsecs  = int(fldsecs/fldperiod)*fldperiod
545          fldcount = int(fldsecs/fldperiod) + 1
546        and were modified.
547    o autodiff: checkpoint_lev...
548      - updated storing for bulk formulae (some arrays were missing)
549      - added state for seaice package
550      - synchronized with main branch
551    o DIVA:
552      Modif.s in
553      - the_main_loop.F
554      - the_model_main.F
555      and added cost_final_restore.F cost_final_store.F
556      o With these changes, it is possible to fully separate
557        the first forward run to compute the cost function (mdthe_main_loop)
558        and adjoint runs over individual DIVA intervals (adthe_main_loop)
559        into separate model executions.
560        This enables better tuning of DIVA to given queue sizes.
561      o Loss of cost function value in consecutive DIVA runs is
562        fixed by storing to 'costfinal' file.
563      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
564        beginning/end of adjoint integration is accounted for.
565      The current changes apply to TAF-1.4.26.
566      TAF has one remaining bug, requiring one manual change
567      (see MITgcm manual).
568    o cal: synchronized between MAIN and ecco-branch
569    
570    checkpoint48i_post
571    o Changes to restore differentiability of code w.r.t. previous tag
572      (mostly adding new routines to make list and replacing
573      pressure by totPhiHyd).
574    o Updated and merged grdchk package
575      - has both ADM and TLM checks
576      - works for single- and multi-proc.
577      - output cleaned
578      - worked successfully for parallel DIVA
579    o genmake:
580      - Adding -platform=SP4
581      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
582    o Modif. for DIVA:
583      ctrl_unpack should not be called in intermediate DIVA interval.
584      (similar thing would apply for active files such as
585      tbar, sbar, psbar, which should not be reinitialised;
586      only relevant for ecco-branch)
587    
588    checkpoint48h_post
589    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
590    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
591    o Added SEAICE_initialHEFF to pkg/seaice
592    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
593    
594    checkpoint48g_post
595    --- EOS:
596    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
597      store total Potential in totPhyHyd for diagnostics & EOS.
598    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
599    --- Pressure/geopotential gradient:
600    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
601    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
602      ( changes results of global_ocean_pressure )
603    o NLFS + z-coord.: add eta*Rho' contribution.
604    o accurate phiHyd when using interface-W at the middle between 2 centers
605     ( changes results of ideal_2D_oce )
606    o includes r* 2nd term in potential gradient.
607    
608    checkpoint48f_post
609    Merging from release1_p12:
610    o Modifications for using pkg/exf with pkg/seaice
611      - improved description of the various forcing configurations
612      - added basic radiation bulk formulae to pkg/exf
613      - units/sign fix for evap computation in exf_getffields.F
614      - updated verification/global_with_exf/results/output.txt
615    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
616      (SBO) core products, including oceanic mass, center-of-mass,
617      angular, and bottom pressure (see pkg/sbo/README.sbo).
618    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
619      to avoid negative values in shallow regions.
620      - updated verification/natl_box/results/output.txt
621      - updated verification/lab_sea/results/output.txt
622    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
623    o Added useSingleCpuIO option (see PARAMS.h).
624    o Updated useSingleCpuIO option in mdsio_writefield.F to
625      work with multi-field files, e.g., for single-file pickup.
626    o pkg/seaice:
627      - bug fix in growth.F: QNET for no shortwave case
628      - added HeffFile for specifying initial sea-ice thickness
629      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
630    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
631      kpp_transport_t.F, forward_step.F, and the_main_loop.F
632    o pkg/seaice:
633      - adjoint-friendly modifications
634      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
635    
636    checkpoint48e_post
637    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
638    o dynamics: change definition of computational domain & adapt mom_fluxform
639      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
640    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
641        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
642        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
643        global_ocean.90x40x15 global_with_exf global_ocean_pressure
644        inverted_barometer solid-body.cs-32x32x1
645      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
646    
647    checkpoint48d_post
648    o in preparation for r*:
649     a) use pre-computed gradient of hydrostatic potential:
650        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
651     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
652        => affects results of glob_oce_pressure (different truncation error)  
653      update output.txt of ideal_2D_oce & global_ocean_pressure
654    
655    checkpoint48d_pre
656    o in preparation for r*:
657      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
658      pass the 2 comp. of the grad. as arguments to momentum S/R.
659      but for the moment, only used if it does not change the results.
660    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
661    
662    checkpoint48c_post
663    Modifications in treatment of initial flux forcing controls
664    to avoid extra storing of flux fields.
665    
666    checkpoint48c_pre
667    o Added tidal_basin_2d experiment (currently 1D!)
668    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
669    
670    checkpoint48b_post
671    o r* coordinate added in #ifdef NONLIN_FRSURF block.
672     (modification to pressure gradient not yet implemented)
673    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
674      (for U & V) that are used for vertical advection of momentum.
675    
676    checkpoint48a_post
677    o In preparation for r*, use temp. array to compute vertical transport
678       in flux-form momentum pkg. => change results of few test-exp.
679      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
680                        lab_sea, natl_box & plume_on_slope
681    
682    checkpoint48
683    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
684    
685    checkpoint47j_post
686    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
687    o moved adexch from forward_step to addummy_in_stepping
688    o added exch in ctrl_map_...
689    o aveFreq.=0. at end of cost_final to avoid overwrite in
690      reverse checkpointing loop
691    o Yet more changes in gmredi:
692      * adgmredi_calc_tensor
693        avoiding all recomputation of gmredi_slope_limit
694      * adgmredi_x/y/rtransport
695        added flag for excessive storing to avoid recomp. of
696        u/v/rtans, dTdx/y/z
697        -> this is not really necessary and very memory-consuming
698      * adgmredi_slope_psi:
699        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
700      * gmredi_slope_limit
701        re-activated full calculation of taperfct for case 'ac02'
702    o updating verification/ adjoints of carbon, global_ocean.90x40x15
703    
704    checkpoint47i_post
705    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
706    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
707      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
708    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
709    o gmredi: fix few bugs.
710    
711    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
712    This will be a good checkpoint to plug into the ecco-branch.
713    o few modif.'s to get latest version adjointed
714      (mainly kick out code in ini_linear_phisurf)
715    o modif's to run adjoint with exactConserv
716    o case GM_BOLUS_ADVEC should be cleaned
717      S/R gmredi_slope_psi should be cleaned
718    o verification/carbon now has exactConserv=.TRUE.
719    
720    checkpoint47g_post
721    o time-average AIM output: becomes independent from statvars time-average
722      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
723    o After TAF bug fix:
724      Tested adjoint of gmredi package.
725      Tests were done with checkpoint47 rather than with latest
726      checkpoint47f_post since the latter is broken for the adjoint
727      verification/carbon/ contains both ADM and TLM gradient checks.
728    Here they are, before they get changed/lost/stolen.
729    Mostly modif.'s to fix numerical sensitivities.
730    Gradient checks OK for
731    - GM_taper_scheme:
732      * clipping
733      * ac02
734      * linear
735      * glw91
736      * dm95
737      * ldd97
738    - GMREDI_OPTIONS:
739      * GM_VISBECK_VARIABLE_K
740      * GM_NON_UNITY_DIAGONAL
741      * GM_EXTRA_DIAGONAL
742      * GM_BOLUS_ADVEC
743    in conjunction with data.gmredi parameters to be checked in
744    in a few minutes under verification/carbon/code/
745    
746    checkpoint47f_post
747    Merging from release1_p10:
748    o modifications for using pkg/exf with pkg/seaice
749      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
750        and SEAICE_EXTERNAL_FLUXES
751      - pkg/exf CPP options EXF_READ_EVAP and
752        EXF_NO_BULK_COMPUTATIONS
753      - usage examples are Experiments 8 and 9 in
754        verification/lab_sea/README
755      - verification/lab_sea default experiment now uses
756        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
757    
758    checkpoint47e_post
759    o created a tag prior to creating a branch
760    
761    checkpoint47d_post
762    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
763      at the bottom boundary had an erroneous half slip boundary condition
764    o added bottom drag and no slip boundary condition capabilities to
765      oceanic pressure coordinates code
766    o added new verification experiment global_ocean_pressure, this experiment is
767      also described in the tutorial section of the manual
768    checkpoint47d_pre
769    
770    checkpoint47c_post
771    o Added a verification experiment for a global cubed-sphere ocean run
772      -  verification/global_ocean.cubed32x32x30
773      -  uses pkg/therm_seaice and pkg/bulk_forcing
774    
775    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
776    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
777      when using P-coordinate; only implemented for atmospheric config.
778    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
779      NOTES: requires option NONLIN_FRSURF to be "#define".
780    o update advect_xz/results/output.txt (left from checkpoint44g_post)
781    
782    checkpoint47b_post
783    Merging from release1_p9:
784    o pkg/seaice
785      - removed GOTO's and added taf directives
786      - double precision constants to reduce the g77 (Linux)
787        to F77 (SGI) differences reported in release1_p8
788    o tools/genmake
789      - added SGI options
790    o verification/testscript
791      - updated to that of checkpoint47a_post
792    o verification/global_ocean.90x40x15/input/eedata
793      - modified for SGI f77 compatibility
794    o verification/lab_sea
795      - added description of sea-ice model
796      - added missing matlab routines
797      - added test of thermodynamics parallelization
798    
799    checkpoint47a_post
800    o new pkg: aim_v23
801     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
802       for now, keep the same surface forcing as before.
803     - Part-Cell implemented into AIM; check that Heat & Water are conserved
804     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
805     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
806    o add diagnostic of surface correction term in monitor output
807    
808    o bulk_force and therm_seaice
809    - Two packages:  bulk_force (Bulk forcing)
810      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
811    - Earlier integration from Stephaine Dutkiewicz
812      and Patrick Heimbach.
813    - Two ifdef statements for compile time,
814       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
815    
816    checkpoint47
817    differentiable version of checkpoint46n_post
818    o bug fix in quasihydrostaticterms
819    o * "clean" adjoint code (in terms of extensive recomputations)
820        can now be obtained for all GMREDI options (i.e. for
821        - GM_VISBECK_VARIABLE_K
822        - GM_NON_UNITY_DIAGONAL
823        - GM_EXTRA_DIAGONAL
824        - GM_BOLUS_ADVEC )
825      * However, wrong gradient check problem remains unsolved.
826      * New CPP options have been introduced for different
827        tapering schemes
828    o external_fields_load now part of differentiation list
829    o pressure needs multiple storing;
830      would be nice to have store_pressure at beginning or
831      end of forward_step, e.g. by having phiHyd global (5-dim.)
832      (NB: pressure is needed for certain cases in find_rho,
833      which is also invoked through convective_adjustment).
834    o recomputations in find_rho for cases
835     'JMD95'/'UNESCO' or 'MDJWF' are OK.
836    o #define ATMOSPHERIC_LOADING should be differentiable
837    o ini_forcing shifted to begining of initialise_varia
838    o Incorporating QNVS line search routines into MITgcm
839      (this is separate code, and therefore not under pkg)
840      lsopt/, optim/
841    o Updated verification/carbon/
842      - #define GM_VISBECK_VARIABLE_K
843      - GM_taper_scheme    = 'ldd97'    
844    
845    checkpoint46n_post
846    Merging from release1_p8:
847    o verification/natl_box:
848      updating new external_fields_load routine
849    o New package: pkg/seaice
850      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
851      The sea-ice code is based on Hibler (1979-1980).
852      Two sea-ice dynamic solvers, ADI and LSR, are included.
853      In addition to computing prognostic sea-ice variables and diagnosing
854      the forcing/external data fields that drive the ocean model,
855      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
856      The implied surface heat flux is then stored in variable
857      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
858      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
859      non-local transport term.  Because this call precedes model
860      thermodynamics, temperature under sea-ice may not be "exactly" at
861      the freezing point by the time theta is dumped or time-averaged.
862      N.B.: fairly large differences in accuracy occur across
863            different platforms/compilers; comparison between
864            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
865            generated output gives:
866       T           S           U           V
867      C D M    c        m  s        m  s        m  s        m  s
868      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
869      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
870      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
871    
872      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
873    o GAD:
874      - generated new common blocks to account for call of
875        same gad routines with differing traceridentities
876        (needed to modify tracerIdentity indices in GAD.h)
877      - generated separate common blocks for case useCubedSphereExchange
878        (Department of Futurology)
879      - parameter lists to gmredi_?transport: added tracerIdentity
880      - added new key indices to tamc.h
881    o external_fields_load:
882      - added this routine to TAF list
883      - needed to make some common blocks global and additional storing
884        along the same lines as exf package (checkpoint_lev?_directives.h)
885    o exf:
886      updated external forcing package
887      - bug fixes carried over from ecco-branch
888        (missing OBCS_OPTIONS.h in two routines)
889      - enable easy to use "no forcing".
890      - added exf I/O for atmospheric loading
891      - added exf I/O for runoff data
892      - transfered scaling between exf <-> MITgcm to exf namelist
893    o Adding new verification experiment global_with_exf.
894      This verification experiment is almost identical to the
895      global_ocean.90x40x15 experiment, except that it uses
896      the exf (and cal) package instead of the
897      external_fields_load routine (cf README file).
898    
899    checkpoint46m_post
900    o modified testscript to return -- when there are no lines of "%MON" output
901    o added new flag "quasiHydrostatic" for QH mode
902      and new routine quasihydrostaticterms()
903    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
904      New routine: mom_u_coriolis_nh()
905    o fixed sign of non-hydrostatic metric terms in u and v equations.
906      Depend on correct sign of gravitySign.
907    o added work.pc* to .cvsignore in aim directories using ifc
908    o introduced flag for controllin non-hydrostatic metric terms
909    o removed gravitySign from PARM04
910    o switched to g77/ifc from pgf77 in aim experiments
911    
912    checkpoint46l_post
913    o made convective adjustment work with pressure coordinates:
914     - changed the direction of k-loop in convective_adjustment.F for the
915       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
916     - adjusted the reference pressure k-index in convective_adjustment.F
917     - adjusted the convection condition in convect.F (in analogy to
918       calc_ivdc.F)
919     - convective_adjustment no longer computes anything on the halos
920     - removed the warnings about negative salinity from find_rho.F and
921       find_alpha.F; instead the new routine look_for_neg_salinity, called
922       at the beginning of find_rho, find_alpha, and find_beta, does a
923       check of the entire slice, if CPP-option
924       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
925    checkpoint46l_pre
926    
927    checkpoint46k_post
928    o fixed the verification/global_ocean.90x40x15 experiment:
929     - new bathymetry (the world according to A., JMC, and M.)
930     - new initial fields and forcing fields (*.bin files)
931     - new POLY3.COEFFS (for the next release one should switch to a full
932       equation of state: JMD95P or MDJWF)
933     - fixed several errors and redundancies in the data file
934     - experiment uses looped cells
935     - added matlab directory with diagnostic scripts for plotting of output
936    
937    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
938     - read AIM physics parameters from a file (data.aimphys)
939     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
940    
941    checkpoint46j_post
942    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
943    o move wVel computation at the end of the time step, in S/R integr_continuity
944    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
945    o update timeave pkg for wVel diagnostic.
946    checkpoint46j_pre
947    
948    checkpoint46i_post
949    o Clean up AIM package (and keep the results unchanged):
950      include CPP_OPTION and use IMPLICT NONE in all routines ;
951      declare all the variables _RL ; use _d 0 for all numerical constants.
952      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
953    
954    checkpoint46h_post
955    o cleaned up the use of rhoNil and rhoConst.
956      - rhoNil should only appear in the LINEAR equation of state, everywhere
957        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
958        and the dynamical equations are all divided by rhoConst
959    o introduced new parameter rhoConstFresh, a reference density of fresh
960      water, to remove the fresh water flux's dependence on rhoNil. The default
961      value is 999.8 kg/m^3
962    o cleanup up external_forcing.F and external_forcing_surf.F
963      - can now be used by both OCEANIC and OCEANICP
964    checkpoint46h_pre
965    
966     Added code to convert surface volume flux (fresh water) into
967     a mass flux when using P coordinates in the ocean (OCEANICP).
968     Note: It assumes you have set rho0=rhoConst=density of fresh water.
969    
970    checkpoint46g_post
971    o Include a new diagnostic variable phiHydLow for the ocean model
972      - in z-coordinates, it is the bottom pressure anomaly
973      - in p-coordinates, it is the sea surface elevation
974      - in both cases, these variable have global drift, reflecting the mass
975        drift in z-coordinates and the volume drift in p-coordinates
976      - included time averaging for phiHydLow, be aware of the drift!
977    o depth-dependent computation of Bo_surf for pressure coordinates
978      in the ocean (buoyancyRelation='OCEANICP')
979      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
980        Theta, Salinity, and Pressure in the parameter list. This routine is
981        presently contained in find_rho.F. This routine does not give the
982        correct density for 'POLY3', which would be a z-dependent reference
983        density.
984    o cleaned up find_rho
985      - removed obsolete 'eqn' from the parameter list.
986    o added two new verification experiments: gop and goz
987      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
988    checkpoint46g_pre
989    
990    checkpoint46f_post
991    o Enable tangent linear (forward mode) gradient checks:
992      - extended active file handling to g_... files
993      - added TANGENT_SIMULATION to theSimulationMode
994      - extended grdchk package accordingly
995    o added tangent linear setup in verification/carbon/code_ftl
996    o added adjoint setup in verification/front_relax/code_ad
997    
998    checkpoint46e_post
999    o Added new equation of state -> MDJWF
1000      - EOS of McDougall et al., 2002, JAOT, submitted
1001      - caveat: the equation of state is only valid for a smaller (more
1002        realistic?) range of values than JMD95P/Z and UNESCO
1003      - added masks to the calculation of pressure in store_pressure
1004      - added more check values for density in check_eos (ini_eos.F), some of
1005        the old check values are out of the range of the MDJWF-eos, so don't
1006        expect perfect matches for those
1007    checkpoint46e_pre
1008    
1009    checkpoint46d_post
1010    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1011      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1012      case of pressure coordinates. eosType='JMD95Z' in
1013      combination with buoyancyRelation='OCEANICP' now causes an error.
1014    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1015      in find_alpha/beta.
1016    checkpoint46d_pre
1017    
1018    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1019      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1020    
1021    checkpoint46c_post
1022    o Changes necessary for ocean in p-coordinates
1023     -  Added new buoyancy relation = 'OCEANICP'
1024     -  Added new parameters = gravitySign (this used to be contained inside
1025        the factor dRdZ which I added when we first switched to R coordinates).
1026     X GM/Redi is not compatible (yet)
1027     X bottom drag and no-slip need to be debugged.
1028    checkpoint46c_pre
1029    
1030    checkpoint46b_post
1031    o Added new equation of state -> JMD95Z and JMD95P
1032      - EOS of Jackett and McDougall, 1995, JAOT
1033      - moved all EOS parameters into EOS.h
1034      - new routines ini_eos.F, store_pressure.F
1035    o Added UNESCO EOS, but not recommended because it requires
1036      in-situ temperature (see JMD95)
1037    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1038      unesco.f to be used with POLY3
1039    checkpoint46b_pre
1040    
1041    checkpoint46a_post
1042    o Added (atmospheric) pressure loading
1043      - new field in FFIELDS.h, etc...
1044      - new cpp flag ATMOSPHERIC_LOADING
1045    o Changed hFacC to _hFacC in calc_phi_hyd.F
1046    o Added SHORTWAVE_HEATING to some files for consistency
1047    checkpoint46a_pre
1048    
1049    checkpoint46
1050    further merges from release1_p5
1051    o new ctrl package
1052      - adopted from ECCO environment to enable optimization
1053      - added Eliassen Palm fluxes to controls
1054    o added Eliassen Palm flux controls to gradient check package
1055    o cost package
1056      - Compatible with new ctrl package
1057      - added Eliassen Palm cost hooks
1058      - modif's of existing cost functions
1059    o Adjoint-related bug fixes in kpp:
1060      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1061      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1062    o autodiff package
1063      - flow directives:
1064        + new for S/R do_the_model_io
1065        + enhanced for S/R checkpoint
1066        + new gmredi.flow
1067      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1068        disable adcommon.h/g_common.h by default.
1069      - fixed problem for adjoint of global_max
1070    o modified verification/carbon/
1071    o New setup for adjoint of global_ocean
1072    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1073    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1074    o incorporated hooks for sponge layer code (external_forcing.F)
1075    
1076    checkpoint45d_post
1077    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1078    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1079      (affects plume_on_slope "cg2d" output)
1080    o add new parameter deltaTfreesurf for free-surface time stepping
1081    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1082    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1083    o change phiMin in exp1 (to agree with documentation)
1084    o add new flags:
1085     - T,S forcing inside/outside Adams-Bashforth
1086     - turn off temp,salt advection and/or forcing
1087     - for each tracer, define internal flag for multiDimAdvection & A-B
1088    o monitor: change definition of KE to check conservation of Energy
1089    
1090    checkpoint45c_post
1091    o Removed f90 comments ("!")
1092    o Modified initialisations to enable exf package for MITgcm
1093      (without invoking ECCO_PACKAGE).
1094    o modifications to gradient check package (Martin Losch)
1095      - enable centered differences
1096      - modified format of standard output
1097    
1098    checkpoint45b_post
1099    o cleaned exchange calls in cg2d
1100    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1101    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1102      to configure barotropic setup (Martin Losch)
1103    o moved some initialisations within bi,bj loop in dynamics
1104      (TAF flow dependency)
1105    o in initialise_varia, moved call packages_init_variables
1106      before convective_adjustment_init
1107      (corresponding adjustment of TAF tape initialisation).
1108    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1109    
1110    checkpoint45a_post
1111    o compute Rho over the whole domain (extend iMin,jMin indices)
1112    o specific exchange for X-slice domain (case Ny=1)
1113    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1114    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1115    
1116    checkpoint44h_post = checkpoint45
1117    o Fix to restore differentiability:
1118      place at which packages_init_variables is called in
1119      initialise_varia is crucial for reverse control flow.
1120    o modifications in GMRedi to enable stable adjoint
1121      (corresponding modif's in thermodynamics, dynamics)
1122    o added missing hook for sponge layer code in external_forcing
1123    o modified test cost functions
1124    o storing in gad_advection (plus removal of write(0,*)!
1125    o missing headers TR1.h added in convective_adjustment routines
1126    o errorMessageUnit set non-equal zero in eeboot
1127      (conflict on some platforms, e.g. IBM SP3)
1128    o modified carbon verif.
1129    
1130    checkpoint44h_pre
1131    o vertical grid option: allow to put the Interface at the middle between
1132      2 cell-centers ; replace delZ in pkg/kpp by drF.
1133    o GM Advective form: Tracers are advected using the residual transport (=
1134      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1135    
1136    checkpoint44g_post
1137    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1138      results) ; ifdef missing in thermodynamics.F
1139    
1140    checkpoint44f_pre,checkpoint44f_post
1141    o added PTRACERS package
1142      This allows an arbitrary number of passive tracers to be integrated
1143      forward simultaneously with the dynamicaly model.
1144      + Implemented so far:
1145        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1146        - I/O and checkpointing
1147        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1148      + Not implemented so far:
1149        - KPP
1150        - OBCS
1151      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1152        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1153        line in data.pkg.
1154      + This package is disabled by default since it increases storage.
1155    
1156    
1157    o testscript: added -cleanup option
1158    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1159                 b) enable to filter 2D fields.
1160    
1161    checkpoint44e_pre,post
1162    o re-wrote convective adjustment to use pre-calculated weights
1163      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1164      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1165      Original calls to convect() still in place.
1166    
1167    chkpt44d_pre,post
1168    o added missing EXCLUDE_MONITOR flags
1169    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1170      (incompatible typ in MIN/MAX expressions caused problems
1171      on IBM SP3)
1172    o in genmake added variable MAKEDEPEND
1173      plus resetting for case SunOS
1174    o added timer_stats.c routine for IBM SP3
1175    o removed variables in dynamics
1176    !!! I forgot to create tag chkpt44d_pre !!!
1177    !!! But chkpt44d_pre = chkpt44c_post    !!!
1178    
1179    o real fresh water flux implemented with non-linear free-surface.
1180    
1181    chkpt44c_pre,post
1182    o few fix (mask in shap_s2, EmPmR in external_field_load,
1183      USE_NATURAL_BCS in solve_for_P);
1184    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1185    
1186    checkpoint44b_pre/_post
1187    o merge of relevant stuff from the ecco-branch:
1188      - genmake: removed $S64 overwrite for case SunOS
1189      - pkg/exf: update and corrections for field swapping and obcs
1190      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1191                  harmonized between ECCO and MITgcm
1192      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1193                      updated checkpointing_lev... lists for obcs
1194      - model/src: minor changes in forward_step, plot_field
1195                   added directive for divided adjoint in the_main_loop
1196      - pkg/mdsio: added mdsio_gl_slice
1197    
1198    o check parameters & config (chkpt44a_pre,post)
1199    o OBC and NonLin_FrSurf.
1200    
1201    checkpoint44
1202    o fix bug in mom_vi_del2uv
1203    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1204    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1205    o update AIM experiments (NCEP input files)
1206    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1207    o added some stuff for AD
1208    
1209    checkpoint43
1210    o added two new advection tests
1211    o added global 4x4 degree ocean test
1212    o added test of H&S94 with free surface on cube
1213    o some final mods for gradient check, adjoint,...
1214    
1215    checkpoint42
1216      Fixed AD-related problems:
1217    o Store directives up-to-date with re-arranged Adams-Bashforth
1218      (mainly thermodynamics.F)
1219    o New store directives for multi-dim. advection schemes
1220      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1221      * new common block and key passkey
1222      (mainly gad_advection.F)
1223    o Modified store directives for split of dynamics/thermodynamics
1224      for the case ALLOW_KPP
1225    o Cleaned argument list for timestep_tracer.F
1226    
1227    checkpoint41
1228    o re-formatted/added comments in prologues of key subroutines
1229      to work with protex
1230    
1231    checkpoint40
1232    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1233    o added FLT (floats) package from Arne along with demo. experiment
1234    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1235      implementation of forward-in-time forcing terms
1236    o more mods for non-linear free-surface including new variable
1237    o modified multi-dim method to work on cube
1238    o bug fix in KPP (from DM)
1239    
1240    checkpoint40pre9
1241    o added DST advection schemes
1242    o fix MPI bug on SGI's
1243    o modifications for non-linear free-surface
1244    o fixed conditionals for fixed flow/passive tracer only mode
1245    o added tension/strain form of stress tensor
1246    o changes to commenting of arguments for TAF/TAMC
1247    o added/updated many matlab scripts
1248    o added multi-dimensional advection method for tracers
1249      
1250    checkpoint40pre8
1251    o new package rw/
1252      Added method for dumping intermediate local arrays:
1253      mdsio_writetile - same as mdsio_writefield except works from inside
1254                        bi,bj loop
1255      mdsio_writelocal - same as mdsio_writetile except works for local
1256                         arrays
1257      write_local_r? - higher-level wrapper for mdsio_writelocal
1258      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1259      Example given at end of mom_vecinv.F that dumps some local arrays.
1260    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1261      control flux-form versus vector invariant code.
1262      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1263      or genmake -DISABLE ...
1264    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1265      (additional storing is now needed for case vecinv;
1266      currently nothing implemented to switch this storing off
1267      in case fluxform is used since no CPP flag available).
1268    
1269    checkpoint40pre7
1270    o bug fix in dynamics.F
1271      calc_viscosity called before k=1,Nr loop.
1272    o added some #ifdef's ALLOW_PASSIVE_TRACER
1273    o cleaned initialisations in ctrl_map_ini
1274      related to TAF
1275    
1276    checkpoint40pre6
1277    o split dynamics into thermodynamics & dynamics
1278    o corresponding split of calc_diffusivity into
1279      calc_diffusivity, calc_viscosity
1280      (kpp_calc_diff, kpp_calc_visc).
1281    o Added diffkr, kapgm to control variables
1282    o bug fix in gmredi_slope_limit for ldd97
1283    
1284    checkpoint40pre5
1285    o proper initialization of Adams-Bashforth time stepping
1286      + uses forward step for very first step of model (iter=0)
1287    o re-generated *all* output since almost all output is modified by this
1288      change (sorry but we've been putting this one off for about 2 years)
1289      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1290        *not* regenerated since they are already out of date and I don't
1291        want to create the impression that they are suddenly working.
1292    o removed KAP stuff for DEC's
1293    o modified/added many .cvsignore files in */code and */input
1294    o added new expt "solid-body.cs-32x32x1"
1295      + this uses an alternative form of ini_curvilinear_grid.F which
1296        is not necessarily any better than the current one...
1297    
1298    checkpoint40pre4
1299    o added re-initialisations of utrans,vtrans,rtrans in
1300      calc_common_factors which are crucial for TAF.
1301    o extended iMin,jMin range for calc_common_factors,
1302      calc_diffusivity
1303    o added option ALLOW_PASSIVE_TRACER
1304    o a few minor updates and fixes
1305    
1306    checkpoint40pre3
1307    o created calc_gtr1.F for gad package
1308    o split the_main_loop and re-introduced forward_step
1309    o some recomputations of nIter0 for TAMC
1310    
1311    checkpoint40pre2
1312    o Updated to latest branch of AJA, JMC
1313    o Added gradient check package
1314    o Added routines for passive tracer handling
1315    o Added carbon sequestration sensitivity experiment
1316    
1317    checkpoint39
1318     o Modifications and fixes to support TAMC
1319       (mainly missing or wrong directives)
1320     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1321       in addummy_in_stepping
1322     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1323     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1324     o Included following packages:
1325       cal: calendar
1326       exf: external forcing
1327       ecco: essential routines to control use of cal, exf
1328             (NB: this is not the full ECCO environment)
1329     o disabled some packages by default in genmake
1330    
1331    checkpoint38
1332     o see notes_c37_adj.txt
1333     o corrected wrong layer index in external_forcing_t
1334     o replaced the_main_loop/forward_step by the_main_loop
1335     o removed forceoutput from write_state
1336       (replaced criteria for initial/final state)
1337     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1338    
1339    checkpoint37
1340     o mdsio.F routine split and packaged in pkg/mdsio
1341       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1342        used unless genmake -disable=mdsio)
1343     o allow a more precise surface-geopotential gradient for the atmosphere
1344       taking into account the change in space of Alpha (=1/rho) at the surface.
1345     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1346       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1347     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1348       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1349       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1350     o Time-Average diagnostics defined as a pseudo package "timeave".
1351     o pickup files : old pickup (before c35) did not work with new code (c35
1352       and after) unless activating 2 commented lines in initialise-varia.
1353     o Non-Hydrostatic pickup file Pb fixed.
1354     o bug with Rigid-lid version (since c35) fixed.  
1355    
1356    checkpoint36
1357     o implement Crank-Nickelson barotropic time-stepping
1358     o recover Time-Average diagnostics
1359     o fix Pb in checkpoint (PR#19)
1360     o AIM become a standard package ; clean unused CPP_kees
1361    
1362    checkpoint35
1363     o subtantial rewrite of dynamics.f
1364     o allows staggered time-stepping
1365     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1366     o added bottom drag (linear + quadratic)
1367    
1368    checkpoint34
1369     o Modified exchange routines for correct reverse simulation.
1370     o Added verification output to comply with bug fix in impldiff.F
1371       as of c33 (exp2, natl_box).
1372     o Corrected store directives in dynamics.F
1373     o Corrected array boundaries in impldiff.F
1374     o Corrected array dimensions in gmredi.
1375       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1376     o Added routine GLOBAL_SUM_INT to global_sum.F
1377     o Added mdsio_gl.F for ECCO purposes.
1378    
1379    checkpoint33
1380     o Fixed bug in lower BC in impldiff.F
1381     o Fixed confusion about units of forcing arrays in FFIELDS.h
1382       namely Fu,Fv,Qnet,Qsw,EmPmR:
1383       - Removed verification/natl_box/code/external_fields_scale.F
1384         (did not differ from that in model/src)
1385       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1386         (see FFIELDS.h for description)
1387       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1388         kpp_calc.F and kpp_transport_t.F
1389       - Removed model/src/external_fields_scale.F and calls to it
1390       - verification/natl_box uses flux data with "atmospheric" sign so
1391         a special version of external_fields_load.F is used to
1392         change the data as it's read in. This way, the arrays
1393         have the right units and signs at all times tha a user could
1394         possibly use them.
1395     o Corrected genmake to delete a temporary file during configuration
1396    
1397    checkpoint32
1398     o Scaling of forcing fields moved from external_forcing.F to
1399       external_fields_scale.F, called directly after loading fields.
1400     o Surface relaxation terms added to surface tendency fields in
1401       extra subroutine.
1402     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1403       fields.
1404     o Changes in GMRedi to comply with packaging structure.
1405     o Modifications and bug fixes in KPP package.
1406     o Verification experiment for KPP added (verification/nat_box/)
1407    
1408    checkpoint31
1409     o Packages interface brought in line with defined standard
1410       -> new routines packages_...F
1411       -> changes in initialise_fixed.F, initialise_varia.F
1412       -> enables initialisation interface for ECCO package
1413     o Rescaling of external forcing fields immediately after read
1414       (removed from external_forcing.F)
1415       -> new: surface_fields_scale.F
1416       -> affects ini_foorcing.F, external_fields_load.F
1417     o Computation of surface tendencies before tendency updates.
1418       -> new: external_forcing_surf.F
1419     o Change of variable names useGMRedi, useKPP, useECCO
1420     o Further changes in dynamics.F, impldiff.F for TAMC
1421     o Tested for experiments 0, 2, 4.
1422       - not yet tested for GMRedi.
1423       - not yet tested for KPP.
1424    
1425    checkpoint30
1426     o Updates for OBCs
1427     o New experiment for test OBCs (internal_wave)
1428     o New output.txt in verification/exp4/results/
1429     o Updates for KPP: calculation of viscosity corrected, new variables
1430       kpp_dumpFreq and kpp_taveFreq
1431     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1432       and entry for T90 in genmake
1433    
1434    checkpoint29
1435     o packaged KPP and GM/Redi
1436    
1437    checkpoint28
1438     o Corrected initialization of hFacMin for difference vertical coordinates
1439     o Modified calculation of partial cell thickness to more robust algorithm
1440     o config_summary.F: replaced write_1D_... by write_0D_...
1441       read_write.F: added subroutines write_0D_...
1442     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1443       included some initialisations required for TAMC.
1444     o routine calc_isoslopes: modified sqrt computation to make it
1445       differentiable for zero argument.
1446     o routines dynamics, impldiff:
1447       included store directives and tape key computations required for TAMC.
1448     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1449    
1450    checkpoint27
1451     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1452       formulation works properly with variable resolution.
1453     o restructured the calling tree between the_model_main() and dynamics()
1454     o split initialise() into initialise_fixed() and initialise_varia()
1455     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1456       in new routine ini_psurf()
1457    
1458    checkpoint26
1459     o moved some #ifdef in optional routines to encompass everything
1460       except the argument declarations. This was using up some memory.
1461     o fixed macros like _ADT to work with both versions of Linux cpp
1462     o cleaned up some unused and uninitialized variables
1463       (helps when debugging with strict compile options)
1464     o split up CPP_EEOPTIONS.h into options and macros
1465       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1466     o patch for 2 processor JAM mode
1467    
1468    checkpoint25
1469     o updates for OBCs and NH
1470     o dramatically reduced memory usage
1471     o added "JAM" routines for use on Artic network
1472     o parameterization of convection by implicit vertical diffusion
1473     o added a diagnostic of convective index
1474     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1475       (this is was partly for OBCs and NH but also in anticipation of
1476        an explicit free-surface option)
1477     o initial state input files for U and V
1478    
1479    checkpoint24
1480     o Removed some spurious "REAL"s
1481     o Updated KPP to latest version from JPL
1482     o Added a COS(latitude) in horizontal viscosity
1483    
1484    checkpoint23
1485     o Added del^4 diffusion for salt and temperature
1486     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1487    
1488    checkpoint22
1489     o Made many small changes: implicit none, format(i5), etc...
1490     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1491    
1492    checkpoint21
1493     o Introduced new I/O package that supports direct-access records (mdsio.F)
1494     o Split-up mid-level I/O routines
1495     o Updated input data for experiments 0,1,2,4 and 5
1496     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1497    
1498    checkpoint20
1499     o Tidied up open-boundaries some more
1500     o Added non-hydrostatic code
1501     o Fixed some input data
1502     o Modified MPI start-up to work in "coupled" context.
1503    
1504    checkpoint19
1505     o Tidied up directory structure for verification experiments.
1506     o Added new code for open boundaries.
1507     o Corrected advective terms near boundaries.
1508     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1509     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1510     o Split default parameters out of ini_parms.F into set_defaults.F.
1511    
1512    checkpoint18
1513     o Further changes for optional code generation with
1514       CPP - ugh!
1515    
1516    checkpoint17
1517     o Beginning to incorporating modularity
1518       for supporting atmos. and ocean configs.
1519     o Small changes for TAMC complinace
1520     o New ultra simple test case. Barotropic box
1521       configuration "exp0".
1522    
1523    checkpoint16
1524     o Minor changes to exchange routines to support
1525       accumulation in reverse mode. Adjoint of an
1526       assignment is an addition.
1527     o Changes to support compilation by TAMC (LR(1)
1528       syntax) and by g77 under Linux ( 72 character
1529       limit ).
1530    
1531    checkpoint15
1532     Rewrote exchange routines to allow
1533     o General tile <-> tile connectivity.
1534     o TAMC reverse mode flag ( is this really needed? )
1535     o Variable width overlap and exchange region widths.
1536     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1537       shmput/shmget, VIA, SYSV shmem and every other cool
1538       communication method.
1539    
1540    checkpoint14
1541     Consistent isomorphism chages made. These allow dynamical core
1542     to support both pressure and meters as a vertical coordinate.
1543    
1544    checkpoint13
1545     Release which corrects global_max problem and a couple
1546     of KGM time-averaging diagnostic errors. Also contains
1547     a double-gyre experiment setup as well as the baseline
1548     4 degree global template. The double gyre template is
1549     organised to allow it to be applied automatically to
1550     the baseline configuration.
1551    
1552    branch-point-rdot
1553     A few tidy-ups have been made bt the real point of this
1554     check-point (excuse the pun) is to allow a branch to be
1555     made for the purposes of adding the rDot alterations.
1556     I don't want to commit the rDot to the main-trunk until
1557     we've actually tested it...
1558    
1559  checkpoint12  checkpoint12
1560   Tidy up and added generic genmake script (formerly   Tidy up and added generic genmake script (formerly
1561   configure script).   configure script).

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