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revision 1.7 by adcroft, Mon Jun 22 16:24:50 1998 UTC revision 1.270 by edhill, Mon Mar 22 05:10:10 2004 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    o MNC:
6      - make myThid the last argument for all subroutines
7      - new default for the grid files: NO halos
8      - add useMNC and other run-time flags
9      - separate per-file-group handling of the unlimited dimension
10      - early initialization of MNC w/ flags read at the eeboot stage
11        and lookup tables set in initialize_fixed
12      - write all MNC output to a freshly-created directory
13    o thermodynamics sea-ice (thsice) is now tested with testreport.
14    o test exp. advect_cs: use the standard cs32 grid ; update output.
15    
16    checkpoint52l_post
17    o new land formulation:
18      a) use ground enthalpy as prognostic variable to ensure exact
19         energy conservation.
20      b) account for water temperature and for latent heat of freezing
21         in all processes (rain, run-off, ground storage)
22      c) compute surface and ground temperature implicitly.
23    o aim_v23 modification for new land model:
24      a) Treat separately land / ocean / sea-ice surface fluxes
25         to allow implicit computation of land & sea-ice surface temp.
26      b) add snow precipitation.
27    checkpoint52l_pre
28    
29    o fix problem (when 1 tile is empty) in min/max monitor.
30    o fix bug in timeAve (u,vZetatave in common block)
31    o no restoring terms under ice for pkg/seaice
32    o moved SEAICE_DO_DIAGS to S/R do_the_model_io
33    o bug fix for pkg/seaice pickups
34    o change MNC call locations and add coordinate attributes
35    o mask vorticity at the corner ; affects global_ocean.cs output
36    o fix ini_curvilinear_grid ; test CS experiments with mpi
37    o aim.5l_cs: modify sea-ice fraction input file ; update output
38    o exf: Adding simple range check routine for exf fields after read
39    
40    checkpoint52k_post
41    o removed top-level directory "diags"
42      - we migrated these functions to pkg/timeave a long time ago
43    o fixed bug introduced in pkg/monitor
44    o accuracy ctrlprec = 32 insuffient for gradient checks using
45      averaged fields (I/O via cost_averages)
46      -> use ctrl.h in active_file*.F to control I/O precision.
47    o paramter list of CALL ADTHE_MAIN_LOOP
48    o added initial do_the_model_io to ecco
49    o set all ...Freq to zero after cost_final
50      taveFreq, dumpFreq, pChkptFreq
51    o MAIN and ECCO differentiability restored
52    
53    checkpoint52j_post
54    o fix nchklev in tamc.h for global_ocean...
55    o Bringing flow and store directives up-to-date
56    o Really weird thing!
57      call do_the_model_io from the_main_loop with parameters
58      starttime, niter0, instead of mytime, myiter, screws up the adjoint:
59      TAF places a faulty re-call of initialise_varia
60      after cost_final call which should not be there!
61    checkpoint52j_pre
62    
63    o tweaked pkg/mdsio/mdsio_readfield.F to have more useful logic and
64      error messages
65    o fix errorMessageUnit problem. remove old version of mdsio from eesup/src
66    o modified pkg/mdsio/mdsio_readfield.F -- commented out diskspace-eating
67      debug output
68    o modfied mdsio_writefield.F to handle non-global files under exch2
69    o update AIM Cubed-Sphere exp (aim.5l_cs):
70      use land, p*, and Franco.M forcing fields with fractional land-sea mask.
71    o update AIM Equatorial Channel exp:
72      use standard aim_v23 pkg and change the SST fields to be more realistic.
73    o globalFile now works with exch2
74    o merged mom_vi_calc_relvort3.F, mom_vi_del2uv.F and
75      mon_vort3.F to make exch2 friendly with >1 tile per cube face
76    o limit timeave output for hi-res integrations
77    
78    checkpoint52i_post
79    o removed CPP_EEOPTIONS.h from verification/*/code
80    o updated the tiling for global_ocean_pressure
81    checkpoint52i_pre
82    
83    o update aim.5l_LatLon using the standard aim_v23 pkg (instead of
84      the old pkg/aim).
85    
86    checkpoint52h_pre
87    o shortened offending lines in exch2_send_rx?.template
88    o modified W2_EXCH2_TOPOLOGY.h to reflect current topology generator
89    o genmake2: add build & execute test for NetCDF code
90    o modded aim.5l_cs and global_ocean.cs32x15 to use exch2, removed
91      old grid files, moved CPP_EEMACROS.h to pkg/exch2
92    o added useSingleCPUIO flag to monitor.F and mon_out.F
93    o added temporary hack for sea-ice dynamics on the cube:
94      metric terms are ignored and it is assumed that
95      there is no sea-ice on cube faces 1, 2, 4, and 5.
96    
97    checkpoint52f_post
98    o added exch2 cube routines to pkg/exch2
99    o modified hs94.cs-32x32x5 to use it
100    o added new grid files to hs94.cs-32x32x5
101    checkpoint52f_pre
102    
103    checkpoint52e_post
104    o first attempt to solve vertical advection (momemtum & T,S) Implicitly
105      for now, only implemented with Lax-Wendroff (tracer) and VectInv (mom)
106    o step.1 : rewrite (as in MultiDimAdvec) explicit tracer stepping (gad_calc_rhs.F)
107      to work with implicit vertical advection and AB ;
108    o Implic. vert. advect. implemented with flux-limiter, c2, u3 and c4 scheme.
109    o update output (gad_calc_rhs.F changes affect truncation error) of exp:
110     front_relax, global_ocean .cs32x15 & _pressure, internal_wave, lab_sea, natl_box
111    checkpoint52e_pre
112    
113    o fix bug in impldiff when Nr=1 or Nr=2.
114    o change the albedo in pkg/thsice (as GISS model); update output_thsice.txt
115    o little changes (fftpack, aim/phy_suflux ...) to pass the "checkbounds" test.
116    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
117      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
118    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
119    o eesupp/inc/EEPARAMS.h: MAX_NO_PROCS=1024
120    o pkg/cal/cal_toseconds.F fix for long (>60 years) integrations
121    
122    checkpoint52d_post
123    o re-tiled many expts to allow comparison in multi-processor mode
124      - updated output accordingly
125      - changed hs94.128x64x5 to use intial T from file rather than use the
126        random number generator
127    o add infrastructure in model routines for fizhi and gridalt packages
128    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
129    o changes to permit hi-res, cubed-sphere, configuration
130      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
131      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
132      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
133        of surface winds for the cube
134      (A verification experiment, based on global_ocean.cs32x15, but with
135       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
136       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
137       complete with example surface forcing files and matlab scripts to look
138       at the output and compare it with that of global_ocean.cs32x15.)
139    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
140       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
141       to conform to the common rule.
142    o check-in the first version of the coupler + interfaces for multi-components
143       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
144       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
145       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
146       - ocean and atmos. share the same horizontal grid (no interpolation).
147       - exchanges between component and coupler is done in forward_step
148    o new verification experiment, cpl_aim+ocn:
149       coupled ocean - AIM atmosphere on cs32 grid.
150    
151    checkpoint52d_pre
152    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
153    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
154    
155    checkpoint52c_post
156    o Fixing OPTIONS files for use of exf:
157      - ALLOW_ECCO not needed
158      - ECCO_CPPOPTIONS.h should not be included from
159        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
160        as has been the case in the past
161      - All cal/exf related options are currently set in
162        single header file. Should remain so until we
163        agree on a consistent new policy.
164    o Removed all CPP options for cal package.
165      cal has no more CPP options.
166    o modified STOREs in GAD_ADVECTION
167    o corrected key comp. for passkey
168    
169    checkpoint52b_post
170    o new version: "thsice" of thermodynamic sea-ice pkg:
171     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
172     - modify fluxes but do not change theta directly;
173     - light cleaning of bulk_force pkg (still needed with thsice).
174     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
175       + output_thsice.txt to test thsice & bulk_force pkgs.
176    o put back grid & coriolis monitor output.
177    checkpoint52b_pre
178    
179    o call "do_the_model_io" at the beginning (=> dump initial state)
180    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
181    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
182      (need info on NUMBER_OF_PTRACERS)
183    o missing PTRACERS headers in some routines
184    o default tamc.h in pkg/autodiff supposed to crash
185      to ensure proper customization
186    
187    checkpoint52a_post
188    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
189      - moved surfaceTendencyTice from pkg/seaice to main code
190      - subroutine FREEZE_SURFACE now limits only surface temperature
191        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
192        => new output.txt for global_ocean.cs32x15 & global_with_exf
193      - keep the old version of FREEZE for backward compatibility;
194        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
195      - corresponding modifs for TAF directives
196    o added surface flux output variables to TIMEAVE_STATVARS
197    o time-averaged output for pkg/ptracers
198    o fix problem with ECCO-related divided adjoint
199      snapshot file was missing some ad-variables,
200      but no warning issued by TAF
201    
202    checkpoint52a_pre
203    o some bug fixes for #undef REAL4_IS_SLOW
204    
205    checkpoint52 = ecco_c52_e35
206    o after testing adjoints of checkpoint51u_post
207    
208    checkpoint51u_post
209    o this is the post-merge tag of the ecco-branch
210      (needs another clean checkout and re-testing)
211    o various natl_box_adjoint configs and results
212      but no input fields
213    o obcs adjoint not yet merged!
214    o adding ECCO global 1x1 and 2x2 degree configs
215    o updated/extended some store directives for seaice
216    o pkg/ecco now containes ecco-specific part of cost function
217    o top level routines the_main_loop, forward_step
218      supersede those in model/src/
219      previous input data.cost now in data.ecco
220      (new namelist ecco_cost_nml)
221    o in ctrl/ cleaned some cross-dependencies and updated CPP options
222    
223    checkpoint51t_post
224    o this is the pre-merge tag of the ecco-branch
225    
226    checkpoint51s_post
227    o cleanup: removed various obsolete #define-s
228    o pkg/grdchk
229      - renamed 'ph-grd 3' to 'grad-res'
230      - merged from ecco-branch
231        (remaining bug fixes for obcs gradient checks)
232      - additional high-precision output for testreport
233        (grep for 'precision_grdchk_result')
234    
235    checkpoint51r_post
236    o cleaned up or removed CPP_OPTIONS.h files
237    o updated results for some of the tests to reflect the new
238      optfiles (-ieee: -O0 instead of -O3)
239    
240    checkpoint51q_post
241    o cd_code:
242      - moved cd_scheme.F -> cd_code_scheme.F
243      - separate read_checkpoint from cd_code_ini_vars.F
244      - separated cd_code part from write_checkpoint
245      - updated AD_SOURCE, generated .flow
246      - added CD_CODE_VARS.h to the_main_loop
247      - Moving cd_code specific store dir.s to pkg/cd_code
248    o ctrl package totally restructured
249      - pack/unpack now optional and decoupled from
250        xx_/adxx_ I/O
251      - ctrl_pack/unpack cleaned
252        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
253      - confined inclusion of AD_CONFIG.h to where necessary.
254    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
255    
256    checkpoint51p_post
257    o create initial cd_code package
258      - WARNING: the initialization of fields within packages
259        is broken because INI_FIELDS (where READ_CHECKPOINT is
260        called) is called *before* PACKAGES_INIT_VARIABLES.
261        This seems to be backwards since
262        1) its important to initially zero the entire field including
263           the "halo" region
264        2) zeroing needs to be done *before* reading pickup info
265           and the pickup call might or might not happen in any
266           particular run
267      - this needs an overhaul for R2
268    o cleanup verification/*/code/GMREDI_OPTIONS.h
269    o cleanup testreport
270    
271    checkpoint51o_post
272    o bringing AD-related verif's up to date with genmake2
273      - carbon/
274      - global_ocean.90x40x15/
275      - hs.94.1x64x5/
276      - (front_relax/ )
277    o (more) consistent directory structure for AD-related verif.'s
278    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
279    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
280    o bug fix in find_alpha.F for MDJWF:
281      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
282        change rho -> rho-rhoConst
283      - replace call find_rho to find_rhonum
284    o initialisation of rFlx extended to full array (required by TAF)
285      and shifted to thermodynamics
286    o removed PTRACERS.h in ptracers routine
287    o added surfacetendencyPtr to S/R parameter list pracers_forcing
288    o Correcting initialisations for fVerU, fVerV.
289    o helping TAF to recognize dependency on kUp for
290      fVerU, fVerV
291    o Replacing delZ by delR in pkg/ctrl/
292    checkpoint51o_pre
293    
294    o undid all of cp51 pending some cleanups and discussion
295    o added the [#include "AD_CONFIG.h"] statement to all files that need
296       it for adjoint/tl #defines
297     o re-worked the build logic in genmake2 to support AD_CONFIG.h
298     o removed tools/genmake since it no longer works
299    
300    checkpoint51n_post
301    o modifications to make FREEZE flux visible to pkg/kpp
302      - moved surfaceTendencyTice from pkg/seaice to main code
303      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
304      - subroutine FREEZE now limits only surface temperature
305        (this means new output.txt for global_ocean.90x40x15,
306         global_ocean.cs32x15, and global_with_exf)
307    o added surface flux output variables to TIMEAVE_STATVARS
308    
309    checkpoint51n_pre
310    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
311    o added [#include "AD_CONFIG.h"] to all files that use the following
312      defines:
313      - ALLOW_ADJOINT_RUN
314      - ALLOW_TANGENTLINEAR_RUN
315      - ALLOW_ECCO_OPTIMIZATION
316    
317    checkpoint51m_post
318    o incorporating changes to get TAMC/TAF working in genmake2
319      - added new TAMC/TAF targets to the Makefile
320      - various cleanups related to package handling
321      - these changes should have no impact on the forward model
322    
323    checkpoint51l_post
324    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
325     - faster algorithm for cal_addtime.F
326     - higher precision arithmetic, where needed
327     - pkg/exf *startdate variables changed from calendar date to
328       model integration time
329    
330    checkpoint51l_pre
331    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
332    o enable to apply restoring on S & T only in a latitude band.
333    o update output (external_forcing_surf modif. change truncation errors)
334       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
335    
336    checkpoint51k_post
337    o change default to: useNHMTerms=.FALSE.
338     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
339       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
340     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
341        exp1, ideal_2D_oce
342     - change data file of oceanic exp (leave the results unchanged for now)
343       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
344    o set gravitySign automatically according to the vertical coordinate used
345      (and change sign: back to "logical" value: +1 when R increases downward)
346    o added an include barrier to the default CPP_OPTIONS.h and
347      removed the #include "PACKAGES_CONFIG.h" from it
348    o fix a bug in mom_fluxform (from chk51j_post)
349    
350    checkpoint51j_post
351    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
352    o adjusted some flow directives (dynamics, thermodynamics)
353    o added cubed-sphere case to test cost function
354    o heckpoint_lev?_directives.h now include
355      pkg-specific directives, whenever those are enabled.
356    o Moving pkg-specific flow directives to corresponding pkg
357      Moving pkg-specific differentiation list to corresponding pkg
358      Moving pkg-specific checkpoint-lev storing to corresponding pkg
359      ---> conventions are
360           - pkg_ad.flow
361           - pkg_ad_diff.list
362           - pkg_ad_check_lev?_dir.h
363    
364    checkpoint51i_post
365    o merge of the branch-genmake2
366      - knowingly breaks the older genmake
367      - automatic generation of all ALLOW_${PKG_NAME} defines
368      - new testreport supersedes older testscript
369    o large number of package inclusion and header cleanups
370    checkpoint51i_pre
371    
372    o new output for adjoin of global ocean vector invariant
373    o fix for checkpoint of thermodynamic seaice and bulk_force
374    o Steph gchem various cleanups
375    
376    checkpoint 51h_pre
377    o fixed some single quotes
378    o modify gchem pkg to be more versatile
379    o modifications to clean up dic pkg
380    o add pkg/cfc
381    
382    checkpoint51g_post
383    o provide links for ARPACK and ADM*TLM
384    o start removing verification/vero/
385    o update AD-related stuff
386      (in particular some IF-statements in model/src/ routines)
387    o adding to verification/global_ocean.90x40x15/ adjoint of
388      vector invariant setup
389    
390    checkpoint51f_post
391    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
392    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
393      of tracer Green's fucntions for ocean inversion project.
394    
395    checkpoint51f_pre
396    o Added on-the-fly spatial interpolation capability
397        "USE_EXF_INTERPOLATION" to pkg/exf.
398      - This is a temporary Cartesian-grid hack until
399        the super-duper ESMF coupler becomes available.
400      - See verification/global_with_exf/README for usage example.
401      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
402        flags and modified pkg/seaice accordingly.
403    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
404        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
405        non-local transport term.
406    
407    checkpoint51e_post
408    o pkg/mom_vecinv:
409      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
410      - add time-ave diagnostic of vorticity advection.
411    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
412    o atmospheric geopotential: - include water vapor effect;
413                                - use p^kappa in p* scaling.
414    o land pkg: read initial state from files.
415    o AIM : add stratospheric drag in the upper level
416    
417    checkpoint51d_post
418    o change function ILNBLNK (=> last non-blank char.) to return zero
419      (instead of the string length) when the string. char is empty
420    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
421    o modif's to restore TAMC compatibility
422      - avoid "_d" constructs in PARAMETER declarations
423      - avoid interrupting lines by comment lines
424    o Use cluster local disks for purely local I/O
425      vs. globally visible disks needed for ctrl stuff
426      (merged from ecco-branch)
427      - new active_file_loc... and mdsio_..._loc routines
428      - affected packages: autodiff, ctrl, grdchk, mdsio
429    
430    checkpoint51c_post
431    o introducing integer flag debugLevel
432      - debLevZero: suppress all output
433      - debLevA: standard
434      - debLevB: equivalent to current debugMode=.TRUE.
435    o introducing pathname variable mdsioLocalDir for mdsio
436      that can be specified at runtime
437      (relevant for cluster I/O to local disk)
438    `
439    >>>checkpoint51b_post
440    adjoint of ptracers
441    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
442    o extended state in checkpoint_lev?, etc.
443    o alternative ctrl/cost with tr1 or ptracer
444    o new comlev1_bibj_ptracers
445    o new ptracers.flow
446    o made ptracers_forcing same as external_forcing_s
447    o added verification for adjoint with ptracers
448      - adm. grdchk fail so far
449      - tlm. grdchk OK
450      - checked tapelev/comlev recomputations: OK
451    <<<checkpoint51b_pre
452    
453    checkpoint51a_post
454    o added code for biogeochemistry package
455      - new pkgs: dic, gchem
456      - new subroutine in ptracers
457    o modify code for biogeo packages
458      - in model/src and pkg/ptracers
459    
460    checkpoint51
461    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
462      - autodiff, ctrl, exf, grdchk, seaice
463      kept separate packages
464      - cost, ecco, obcs
465    o updating verification/internal_wave, verification/lab_sea
466      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
467    
468    checkpoint50i_post
469    o Preparing next differentiable checkpoint and sync
470      of MAIN vs. ecco-branch
471      - 1st step: this one is differentiable
472      - 2nd step: next(! not this) checkpoint will have updated packages
473                  from ecco-branch)
474    
475    checkpoint50h_post
476    o new package "land": provide surface BC for AIM.
477    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
478    o AIM: use true log-P extrapolation for near surface temp (= as in
479        F.Molteni paper) ; update aim.5l_cs output.
480    o New variable in PARM03 for more flexible pickups
481    o somewhat cleaned package initialisation sequence for
482      ctrl/ cost/ ecco/ in packages_... routines
483    
484    checkpoint50g_post
485    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
486      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
487      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
488        made the default because of faster convergence than ADI
489    
490    checkpoint50f_post
491    o exf totally restructured
492      - replaced all exf_set_ routines by one generic exf_set_gen.F
493        and made sure it's still differentiable
494      - split exf_getffields.F into new exf_bulkformulae.F
495      - exf_inscal_/exf_outscal_ suffixes consistent with field names
496      - updated adjoint/makefile and relevant verif. accordingly
497    
498    checkpoint50f_pre
499     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
500          + change Evap over land. (update aim.5l_cs output)
501     o added missing .cvsignores and made uniform across expts
502     o changed configuration of tidal_basin_2d expt
503     o added pkg/debug functions for tracing code in fatal crashes
504     o tidied pkg/monitor to use MONITOR_OPTIONS.h
505     o new fn in pkg/monitor to stop model if solution grows too big
506     o removed lots of single quotes from comments
507    
508    checkpoint50e_post
509    o make KPP work with PTRACERS
510     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
511       nearly a copy of kpp_transport_s
512     - there is no analogue to SurfaceTendencyS, so I have to use
513       gPtr(of the surface layer) instead
514    o add a new platform SunFire+mpi (SunFire 15000) to genmake
515    checkpoint50e_pre
516    
517    checkpoint50d_post
518    o change kpp output from multiple-record state files to single-record state
519      files analogous to write_state.F
520    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
521      analogous to the cg2d-related output.
522    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
523      so that writing to internal file fn (with length 512) fails.
524    checkpoint50d_pre
525    
526    checkpoint50c_post
527    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
528    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
529    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
530    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
531    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
532    
533    checkpoint50c_pre
534    Merging from release1_p13:
535    o bug fix for pkg/seaice dynamic solver
536    o Added SEAICE_initialHEFF to pkg/seaice
537    
538    checkpoint50b_post
539    o store u*,v* in gU,V instead of in guNm1,gvNm1
540    o in order to put the momForcing out of the Adams-Bashforth:
541      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
542      to timestep.F
543    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
544    o re-generate output for highly sensitive test-exp:
545       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
546    
547    checkpoint50b_pre
548    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
549    o corrected CPP option mismatch in exf_Bulk... functions for case
550      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
551    
552    checkpoint50a_post
553    o Bug fix for merging between c50 and KPP.
554      ikey was passed from thermodynamics to kpp_calc via
555      common block rather than being recomputed in kpp_calc,
556      in contradiction with new key itdkey.
557      New key ikppkey created, and tamc.h headers updated.
558    
559    checkpoint50
560    - 2nd step of merge with ecco-branch:
561      merge changes in ecco-branch back into main trunk
562    - bug fix in find_alpha
563    - more storing in gmredi_calc_tensor.F, kpp_routines.F
564    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
565    - merged some sliced AD support routines
566    
567    checkpoint49
568    merged from ecco-branch:
569    o exf:
570      - Enable initialisation of forcing fields to constant
571        (runtime) values.
572      - in exf_getffields.F
573        Reduce i-/j-loop to interior domain, discarding overlaps.
574        That also fixes wrong TAF-key computations for key_1, key_2
575        with bulf formulae.
576      - exf_init.F modify #ifdef for exf_init_evap
577      - exf_getffieldrec.F, ctrl_getrec.F
578        The following INT-usages are not safe:
579          fldsecs  = int(fldsecs/fldperiod)*fldperiod
580          fldcount = int(fldsecs/fldperiod) + 1
581        and were modified.
582    o autodiff: checkpoint_lev...
583      - updated storing for bulk formulae (some arrays were missing)
584      - added state for seaice package
585      - synchronized with main branch
586    o DIVA:
587      Modif.s in
588      - the_main_loop.F
589      - the_model_main.F
590      and added cost_final_restore.F cost_final_store.F
591      o With these changes, it is possible to fully separate
592        the first forward run to compute the cost function (mdthe_main_loop)
593        and adjoint runs over individual DIVA intervals (adthe_main_loop)
594        into separate model executions.
595        This enables better tuning of DIVA to given queue sizes.
596      o Loss of cost function value in consecutive DIVA runs is
597        fixed by storing to 'costfinal' file.
598      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
599        beginning/end of adjoint integration is accounted for.
600      The current changes apply to TAF-1.4.26.
601      TAF has one remaining bug, requiring one manual change
602      (see MITgcm manual).
603    o cal: synchronized between MAIN and ecco-branch
604    
605    checkpoint48i_post
606    o Changes to restore differentiability of code w.r.t. previous tag
607      (mostly adding new routines to make list and replacing
608      pressure by totPhiHyd).
609    o Updated and merged grdchk package
610      - has both ADM and TLM checks
611      - works for single- and multi-proc.
612      - output cleaned
613      - worked successfully for parallel DIVA
614    o genmake:
615      - Adding -platform=SP4
616      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
617    o Modif. for DIVA:
618      ctrl_unpack should not be called in intermediate DIVA interval.
619      (similar thing would apply for active files such as
620      tbar, sbar, psbar, which should not be reinitialised;
621      only relevant for ecco-branch)
622    
623    checkpoint48h_post
624    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
625    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
626    o Added SEAICE_initialHEFF to pkg/seaice
627    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
628    
629    checkpoint48g_post
630    --- EOS:
631    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
632      store total Potential in totPhyHyd for diagnostics & EOS.
633    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
634    --- Pressure/geopotential gradient:
635    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
636    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
637      ( changes results of global_ocean_pressure )
638    o NLFS + z-coord.: add eta*Rho' contribution.
639    o accurate phiHyd when using interface-W at the middle between 2 centers
640     ( changes results of ideal_2D_oce )
641    o includes r* 2nd term in potential gradient.
642    
643    checkpoint48f_post
644    Merging from release1_p12:
645    o Modifications for using pkg/exf with pkg/seaice
646      - improved description of the various forcing configurations
647      - added basic radiation bulk formulae to pkg/exf
648      - units/sign fix for evap computation in exf_getffields.F
649      - updated verification/global_with_exf/results/output.txt
650    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
651      (SBO) core products, including oceanic mass, center-of-mass,
652      angular, and bottom pressure (see pkg/sbo/README.sbo).
653    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
654      to avoid negative values in shallow regions.
655      - updated verification/natl_box/results/output.txt
656      - updated verification/lab_sea/results/output.txt
657    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
658    o Added useSingleCpuIO option (see PARAMS.h).
659    o Updated useSingleCpuIO option in mdsio_writefield.F to
660      work with multi-field files, e.g., for single-file pickup.
661    o pkg/seaice:
662      - bug fix in growth.F: QNET for no shortwave case
663      - added HeffFile for specifying initial sea-ice thickness
664      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
665    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
666      kpp_transport_t.F, forward_step.F, and the_main_loop.F
667    o pkg/seaice:
668      - adjoint-friendly modifications
669      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
670    
671    checkpoint48e_post
672    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
673    o dynamics: change definition of computational domain & adapt mom_fluxform
674      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
675    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
676        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
677        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
678        global_ocean.90x40x15 global_with_exf global_ocean_pressure
679        inverted_barometer solid-body.cs-32x32x1
680      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
681    
682    checkpoint48d_post
683    o in preparation for r*:
684     a) use pre-computed gradient of hydrostatic potential:
685        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
686     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
687        => affects results of glob_oce_pressure (different truncation error)  
688      update output.txt of ideal_2D_oce & global_ocean_pressure
689    
690    checkpoint48d_pre
691    o in preparation for r*:
692      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
693      pass the 2 comp. of the grad. as arguments to momentum S/R.
694      but for the moment, only used if it does not change the results.
695    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
696    
697    checkpoint48c_post
698    Modifications in treatment of initial flux forcing controls
699    to avoid extra storing of flux fields.
700    
701    checkpoint48c_pre
702    o Added tidal_basin_2d experiment (currently 1D!)
703    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
704    
705    checkpoint48b_post
706    o r* coordinate added in #ifdef NONLIN_FRSURF block.
707     (modification to pressure gradient not yet implemented)
708    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
709      (for U & V) that are used for vertical advection of momentum.
710    
711    checkpoint48a_post
712    o In preparation for r*, use temp. array to compute vertical transport
713       in flux-form momentum pkg. => change results of few test-exp.
714      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
715                        lab_sea, natl_box & plume_on_slope
716    
717    checkpoint48
718    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
719    
720    checkpoint47j_post
721    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
722    o moved adexch from forward_step to addummy_in_stepping
723    o added exch in ctrl_map_...
724    o aveFreq.=0. at end of cost_final to avoid overwrite in
725      reverse checkpointing loop
726    o Yet more changes in gmredi:
727      * adgmredi_calc_tensor
728        avoiding all recomputation of gmredi_slope_limit
729      * adgmredi_x/y/rtransport
730        added flag for excessive storing to avoid recomp. of
731        u/v/rtans, dTdx/y/z
732        -> this is not really necessary and very memory-consuming
733      * adgmredi_slope_psi:
734        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
735      * gmredi_slope_limit
736        re-activated full calculation of taperfct for case 'ac02'
737    o updating verification/ adjoints of carbon, global_ocean.90x40x15
738    
739    checkpoint47i_post
740    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
741    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
742      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
743    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
744    o gmredi: fix few bugs.
745    
746    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
747    This will be a good checkpoint to plug into the ecco-branch.
748    o few modif.'s to get latest version adjointed
749      (mainly kick out code in ini_linear_phisurf)
750    o modif's to run adjoint with exactConserv
751    o case GM_BOLUS_ADVEC should be cleaned
752      S/R gmredi_slope_psi should be cleaned
753    o verification/carbon now has exactConserv=.TRUE.
754    
755    checkpoint47g_post
756    o time-average AIM output: becomes independent from statvars time-average
757      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
758    o After TAF bug fix:
759      Tested adjoint of gmredi package.
760      Tests were done with checkpoint47 rather than with latest
761      checkpoint47f_post since the latter is broken for the adjoint
762      verification/carbon/ contains both ADM and TLM gradient checks.
763    Here they are, before they get changed/lost/stolen.
764    Mostly modif.'s to fix numerical sensitivities.
765    Gradient checks OK for
766    - GM_taper_scheme:
767      * clipping
768      * ac02
769      * linear
770      * glw91
771      * dm95
772      * ldd97
773    - GMREDI_OPTIONS:
774      * GM_VISBECK_VARIABLE_K
775      * GM_NON_UNITY_DIAGONAL
776      * GM_EXTRA_DIAGONAL
777      * GM_BOLUS_ADVEC
778    in conjunction with data.gmredi parameters to be checked in
779    in a few minutes under verification/carbon/code/
780    
781    checkpoint47f_post
782    Merging from release1_p10:
783    o modifications for using pkg/exf with pkg/seaice
784      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
785        and SEAICE_EXTERNAL_FLUXES
786      - pkg/exf CPP options EXF_READ_EVAP and
787        EXF_NO_BULK_COMPUTATIONS
788      - usage examples are Experiments 8 and 9 in
789        verification/lab_sea/README
790      - verification/lab_sea default experiment now uses
791        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
792    
793    checkpoint47e_post
794    o created a tag prior to creating a branch
795    
796    checkpoint47d_post
797    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
798      at the bottom boundary had an erroneous half slip boundary condition
799    o added bottom drag and no slip boundary condition capabilities to
800      oceanic pressure coordinates code
801    o added new verification experiment global_ocean_pressure, this experiment is
802      also described in the tutorial section of the manual
803    checkpoint47d_pre
804    
805    checkpoint47c_post
806    o Added a verification experiment for a global cubed-sphere ocean run
807      -  verification/global_ocean.cubed32x32x30
808      -  uses pkg/therm_seaice and pkg/bulk_forcing
809    
810    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
811    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
812      when using P-coordinate; only implemented for atmospheric config.
813    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
814      NOTES: requires option NONLIN_FRSURF to be "#define".
815    o update advect_xz/results/output.txt (left from checkpoint44g_post)
816    
817    checkpoint47b_post
818    Merging from release1_p9:
819    o pkg/seaice
820      - removed GOTO's and added taf directives
821      - double precision constants to reduce the g77 (Linux)
822        to F77 (SGI) differences reported in release1_p8
823    o tools/genmake
824      - added SGI options
825    o verification/testscript
826      - updated to that of checkpoint47a_post
827    o verification/global_ocean.90x40x15/input/eedata
828      - modified for SGI f77 compatibility
829    o verification/lab_sea
830      - added description of sea-ice model
831      - added missing matlab routines
832      - added test of thermodynamics parallelization
833    
834    checkpoint47a_post
835    o new pkg: aim_v23
836     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
837       for now, keep the same surface forcing as before.
838     - Part-Cell implemented into AIM; check that Heat & Water are conserved
839     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
840     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
841    o add diagnostic of surface correction term in monitor output
842    
843    o bulk_force and therm_seaice
844    - Two packages:  bulk_force (Bulk forcing)
845      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
846    - Earlier integration from Stephaine Dutkiewicz
847      and Patrick Heimbach.
848    - Two ifdef statements for compile time,
849       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
850    
851    checkpoint47
852    differentiable version of checkpoint46n_post
853    o bug fix in quasihydrostaticterms
854    o * "clean" adjoint code (in terms of extensive recomputations)
855        can now be obtained for all GMREDI options (i.e. for
856        - GM_VISBECK_VARIABLE_K
857        - GM_NON_UNITY_DIAGONAL
858        - GM_EXTRA_DIAGONAL
859        - GM_BOLUS_ADVEC )
860      * However, wrong gradient check problem remains unsolved.
861      * New CPP options have been introduced for different
862        tapering schemes
863    o external_fields_load now part of differentiation list
864    o pressure needs multiple storing;
865      would be nice to have store_pressure at beginning or
866      end of forward_step, e.g. by having phiHyd global (5-dim.)
867      (NB: pressure is needed for certain cases in find_rho,
868      which is also invoked through convective_adjustment).
869    o recomputations in find_rho for cases
870     'JMD95'/'UNESCO' or 'MDJWF' are OK.
871    o #define ATMOSPHERIC_LOADING should be differentiable
872    o ini_forcing shifted to begining of initialise_varia
873    o Incorporating QNVS line search routines into MITgcm
874      (this is separate code, and therefore not under pkg)
875      lsopt/, optim/
876    o Updated verification/carbon/
877      - #define GM_VISBECK_VARIABLE_K
878      - GM_taper_scheme    = 'ldd97'    
879    
880    checkpoint46n_post
881    Merging from release1_p8:
882    o verification/natl_box:
883      updating new external_fields_load routine
884    o New package: pkg/seaice
885      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
886      The sea-ice code is based on Hibler (1979-1980).
887      Two sea-ice dynamic solvers, ADI and LSR, are included.
888      In addition to computing prognostic sea-ice variables and diagnosing
889      the forcing/external data fields that drive the ocean model,
890      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
891      The implied surface heat flux is then stored in variable
892      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
893      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
894      non-local transport term.  Because this call precedes model
895      thermodynamics, temperature under sea-ice may not be "exactly" at
896      the freezing point by the time theta is dumped or time-averaged.
897      N.B.: fairly large differences in accuracy occur across
898            different platforms/compilers; comparison between
899            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
900            generated output gives:
901       T           S           U           V
902      C D M    c        m  s        m  s        m  s        m  s
903      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
904      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
905      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
906    
907      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
908    o GAD:
909      - generated new common blocks to account for call of
910        same gad routines with differing traceridentities
911        (needed to modify tracerIdentity indices in GAD.h)
912      - generated separate common blocks for case useCubedSphereExchange
913        (Department of Futurology)
914      - parameter lists to gmredi_?transport: added tracerIdentity
915      - added new key indices to tamc.h
916    o external_fields_load:
917      - added this routine to TAF list
918      - needed to make some common blocks global and additional storing
919        along the same lines as exf package (checkpoint_lev?_directives.h)
920    o exf:
921      updated external forcing package
922      - bug fixes carried over from ecco-branch
923        (missing OBCS_OPTIONS.h in two routines)
924      - enable easy to use "no forcing".
925      - added exf I/O for atmospheric loading
926      - added exf I/O for runoff data
927      - transfered scaling between exf <-> MITgcm to exf namelist
928    o Adding new verification experiment global_with_exf.
929      This verification experiment is almost identical to the
930      global_ocean.90x40x15 experiment, except that it uses
931      the exf (and cal) package instead of the
932      external_fields_load routine (cf README file).
933    
934    checkpoint46m_post
935    o modified testscript to return -- when there are no lines of "%MON" output
936    o added new flag "quasiHydrostatic" for QH mode
937      and new routine quasihydrostaticterms()
938    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
939      New routine: mom_u_coriolis_nh()
940    o fixed sign of non-hydrostatic metric terms in u and v equations.
941      Depend on correct sign of gravitySign.
942    o added work.pc* to .cvsignore in aim directories using ifc
943    o introduced flag for controllin non-hydrostatic metric terms
944    o removed gravitySign from PARM04
945    o switched to g77/ifc from pgf77 in aim experiments
946    
947    checkpoint46l_post
948    o made convective adjustment work with pressure coordinates:
949     - changed the direction of k-loop in convective_adjustment.F for the
950       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
951     - adjusted the reference pressure k-index in convective_adjustment.F
952     - adjusted the convection condition in convect.F (in analogy to
953       calc_ivdc.F)
954     - convective_adjustment no longer computes anything on the halos
955     - removed the warnings about negative salinity from find_rho.F and
956       find_alpha.F; instead the new routine look_for_neg_salinity, called
957       at the beginning of find_rho, find_alpha, and find_beta, does a
958       check of the entire slice, if CPP-option
959       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
960    checkpoint46l_pre
961    
962    checkpoint46k_post
963    o fixed the verification/global_ocean.90x40x15 experiment:
964     - new bathymetry (the world according to A., JMC, and M.)
965     - new initial fields and forcing fields (*.bin files)
966     - new POLY3.COEFFS (for the next release one should switch to a full
967       equation of state: JMD95P or MDJWF)
968     - fixed several errors and redundancies in the data file
969     - experiment uses looped cells
970     - added matlab directory with diagnostic scripts for plotting of output
971    
972    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
973     - read AIM physics parameters from a file (data.aimphys)
974     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
975    
976    checkpoint46j_post
977    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
978    o move wVel computation at the end of the time step, in S/R integr_continuity
979    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
980    o update timeave pkg for wVel diagnostic.
981    checkpoint46j_pre
982    
983    checkpoint46i_post
984    o Clean up AIM package (and keep the results unchanged):
985      include CPP_OPTION and use IMPLICT NONE in all routines ;
986      declare all the variables _RL ; use _d 0 for all numerical constants.
987      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
988    
989    checkpoint46h_post
990    o cleaned up the use of rhoNil and rhoConst.
991      - rhoNil should only appear in the LINEAR equation of state, everywhere
992        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
993        and the dynamical equations are all divided by rhoConst
994    o introduced new parameter rhoConstFresh, a reference density of fresh
995      water, to remove the fresh water flux's dependence on rhoNil. The default
996      value is 999.8 kg/m^3
997    o cleanup up external_forcing.F and external_forcing_surf.F
998      - can now be used by both OCEANIC and OCEANICP
999    checkpoint46h_pre
1000    
1001     Added code to convert surface volume flux (fresh water) into
1002     a mass flux when using P coordinates in the ocean (OCEANICP).
1003     Note: It assumes you have set rho0=rhoConst=density of fresh water.
1004    
1005    checkpoint46g_post
1006    o Include a new diagnostic variable phiHydLow for the ocean model
1007      - in z-coordinates, it is the bottom pressure anomaly
1008      - in p-coordinates, it is the sea surface elevation
1009      - in both cases, these variable have global drift, reflecting the mass
1010        drift in z-coordinates and the volume drift in p-coordinates
1011      - included time averaging for phiHydLow, be aware of the drift!
1012    o depth-dependent computation of Bo_surf for pressure coordinates
1013      in the ocean (buoyancyRelation='OCEANICP')
1014      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
1015        Theta, Salinity, and Pressure in the parameter list. This routine is
1016        presently contained in find_rho.F. This routine does not give the
1017        correct density for 'POLY3', which would be a z-dependent reference
1018        density.
1019    o cleaned up find_rho
1020      - removed obsolete 'eqn' from the parameter list.
1021    o added two new verification experiments: gop and goz
1022      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
1023    checkpoint46g_pre
1024    
1025    checkpoint46f_post
1026    o Enable tangent linear (forward mode) gradient checks:
1027      - extended active file handling to g_... files
1028      - added TANGENT_SIMULATION to theSimulationMode
1029      - extended grdchk package accordingly
1030    o added tangent linear setup in verification/carbon/code_ftl
1031    o added adjoint setup in verification/front_relax/code_ad
1032    
1033    checkpoint46e_post
1034    o Added new equation of state -> MDJWF
1035      - EOS of McDougall et al., 2002, JAOT, submitted
1036      - caveat: the equation of state is only valid for a smaller (more
1037        realistic?) range of values than JMD95P/Z and UNESCO
1038      - added masks to the calculation of pressure in store_pressure
1039      - added more check values for density in check_eos (ini_eos.F), some of
1040        the old check values are out of the range of the MDJWF-eos, so don't
1041        expect perfect matches for those
1042    checkpoint46e_pre
1043    
1044    checkpoint46d_post
1045    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
1046      'OCEANICP', also initialised field pressure correctly in ini_eos in the
1047      case of pressure coordinates. eosType='JMD95Z' in
1048      combination with buoyancyRelation='OCEANICP' now causes an error.
1049    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1050      in find_alpha/beta.
1051    checkpoint46d_pre
1052    
1053    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
1054      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
1055    
1056    checkpoint46c_post
1057    o Changes necessary for ocean in p-coordinates
1058     -  Added new buoyancy relation = 'OCEANICP'
1059     -  Added new parameters = gravitySign (this used to be contained inside
1060        the factor dRdZ which I added when we first switched to R coordinates).
1061     X GM/Redi is not compatible (yet)
1062     X bottom drag and no-slip need to be debugged.
1063    checkpoint46c_pre
1064    
1065    checkpoint46b_post
1066    o Added new equation of state -> JMD95Z and JMD95P
1067      - EOS of Jackett and McDougall, 1995, JAOT
1068      - moved all EOS parameters into EOS.h
1069      - new routines ini_eos.F, store_pressure.F
1070    o Added UNESCO EOS, but not recommended because it requires
1071      in-situ temperature (see JMD95)
1072    o Modified formatting for knudsen2.f in utils/knudsen2 and added
1073      unesco.f to be used with POLY3
1074    checkpoint46b_pre
1075    
1076    checkpoint46a_post
1077    o Added (atmospheric) pressure loading
1078      - new field in FFIELDS.h, etc...
1079      - new cpp flag ATMOSPHERIC_LOADING
1080    o Changed hFacC to _hFacC in calc_phi_hyd.F
1081    o Added SHORTWAVE_HEATING to some files for consistency
1082    checkpoint46a_pre
1083    
1084    checkpoint46
1085    further merges from release1_p5
1086    o new ctrl package
1087      - adopted from ECCO environment to enable optimization
1088      - added Eliassen Palm fluxes to controls
1089    o added Eliassen Palm flux controls to gradient check package
1090    o cost package
1091      - Compatible with new ctrl package
1092      - added Eliassen Palm cost hooks
1093      - modif's of existing cost functions
1094    o Adjoint-related bug fixes in kpp:
1095      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
1096      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
1097    o autodiff package
1098      - flow directives:
1099        + new for S/R do_the_model_io
1100        + enhanced for S/R checkpoint
1101        + new gmredi.flow
1102      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
1103        disable adcommon.h/g_common.h by default.
1104      - fixed problem for adjoint of global_max
1105    o modified verification/carbon/
1106    o New setup for adjoint of global_ocean
1107    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
1108    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
1109    o incorporated hooks for sponge layer code (external_forcing.F)
1110    
1111    checkpoint45d_post
1112    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1113    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1114      (affects plume_on_slope "cg2d" output)
1115    o add new parameter deltaTfreesurf for free-surface time stepping
1116    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1117    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1118    o change phiMin in exp1 (to agree with documentation)
1119    o add new flags:
1120     - T,S forcing inside/outside Adams-Bashforth
1121     - turn off temp,salt advection and/or forcing
1122     - for each tracer, define internal flag for multiDimAdvection & A-B
1123    o monitor: change definition of KE to check conservation of Energy
1124    
1125    checkpoint45c_post
1126    o Removed f90 comments ("!")
1127    o Modified initialisations to enable exf package for MITgcm
1128      (without invoking ECCO_PACKAGE).
1129    o modifications to gradient check package (Martin Losch)
1130      - enable centered differences
1131      - modified format of standard output
1132    
1133    checkpoint45b_post
1134    o cleaned exchange calls in cg2d
1135    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1136    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1137      to configure barotropic setup (Martin Losch)
1138    o moved some initialisations within bi,bj loop in dynamics
1139      (TAF flow dependency)
1140    o in initialise_varia, moved call packages_init_variables
1141      before convective_adjustment_init
1142      (corresponding adjustment of TAF tape initialisation).
1143    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1144    
1145    checkpoint45a_post
1146    o compute Rho over the whole domain (extend iMin,jMin indices)
1147    o specific exchange for X-slice domain (case Ny=1)
1148    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1149    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1150    
1151    checkpoint44h_post = checkpoint45
1152    o Fix to restore differentiability:
1153      place at which packages_init_variables is called in
1154      initialise_varia is crucial for reverse control flow.
1155    o modifications in GMRedi to enable stable adjoint
1156      (corresponding modif's in thermodynamics, dynamics)
1157    o added missing hook for sponge layer code in external_forcing
1158    o modified test cost functions
1159    o storing in gad_advection (plus removal of write(0,*)!
1160    o missing headers TR1.h added in convective_adjustment routines
1161    o errorMessageUnit set non-equal zero in eeboot
1162      (conflict on some platforms, e.g. IBM SP3)
1163    o modified carbon verif.
1164    
1165    checkpoint44h_pre
1166    o vertical grid option: allow to put the Interface at the middle between
1167      2 cell-centers ; replace delZ in pkg/kpp by drF.
1168    o GM Advective form: Tracers are advected using the residual transport (=
1169      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1170    
1171    checkpoint44g_post
1172    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1173      results) ; ifdef missing in thermodynamics.F
1174    
1175    checkpoint44f_pre,checkpoint44f_post
1176    o added PTRACERS package
1177      This allows an arbitrary number of passive tracers to be integrated
1178      forward simultaneously with the dynamicaly model.
1179      + Implemented so far:
1180        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1181        - I/O and checkpointing
1182        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1183      + Not implemented so far:
1184        - KPP
1185        - OBCS
1186      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1187        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1188        line in data.pkg.
1189      + This package is disabled by default since it increases storage.
1190    
1191    
1192    o testscript: added -cleanup option
1193    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1194                 b) enable to filter 2D fields.
1195    
1196    checkpoint44e_pre,post
1197    o re-wrote convective adjustment to use pre-calculated weights
1198      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1199      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1200      Original calls to convect() still in place.
1201    
1202    chkpt44d_pre,post
1203    o added missing EXCLUDE_MONITOR flags
1204    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1205      (incompatible typ in MIN/MAX expressions caused problems
1206      on IBM SP3)
1207    o in genmake added variable MAKEDEPEND
1208      plus resetting for case SunOS
1209    o added timer_stats.c routine for IBM SP3
1210    o removed variables in dynamics
1211    !!! I forgot to create tag chkpt44d_pre !!!
1212    !!! But chkpt44d_pre = chkpt44c_post    !!!
1213    
1214    o real fresh water flux implemented with non-linear free-surface.
1215    
1216    chkpt44c_pre,post
1217    o few fix (mask in shap_s2, EmPmR in external_field_load,
1218      USE_NATURAL_BCS in solve_for_P);
1219    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1220    
1221    checkpoint44b_pre/_post
1222    o merge of relevant stuff from the ecco-branch:
1223      - genmake: removed $S64 overwrite for case SunOS
1224      - pkg/exf: update and corrections for field swapping and obcs
1225      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1226                  harmonized between ECCO and MITgcm
1227      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1228                      updated checkpointing_lev... lists for obcs
1229      - model/src: minor changes in forward_step, plot_field
1230                   added directive for divided adjoint in the_main_loop
1231      - pkg/mdsio: added mdsio_gl_slice
1232    
1233    o check parameters & config (chkpt44a_pre,post)
1234    o OBC and NonLin_FrSurf.
1235    
1236    checkpoint44
1237    o fix bug in mom_vi_del2uv
1238    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1239    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1240    o update AIM experiments (NCEP input files)
1241    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1242    o added some stuff for AD
1243    
1244    checkpoint43
1245    o added two new advection tests
1246    o added global 4x4 degree ocean test
1247    o added test of H&S94 with free surface on cube
1248    o some final mods for gradient check, adjoint,...
1249    
1250    checkpoint42
1251      Fixed AD-related problems:
1252    o Store directives up-to-date with re-arranged Adams-Bashforth
1253      (mainly thermodynamics.F)
1254    o New store directives for multi-dim. advection schemes
1255      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1256      * new common block and key passkey
1257      (mainly gad_advection.F)
1258    o Modified store directives for split of dynamics/thermodynamics
1259      for the case ALLOW_KPP
1260    o Cleaned argument list for timestep_tracer.F
1261    
1262    checkpoint41
1263    o re-formatted/added comments in prologues of key subroutines
1264      to work with protex
1265    
1266    checkpoint40
1267    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1268    o added FLT (floats) package from Arne along with demo. experiment
1269    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1270      implementation of forward-in-time forcing terms
1271    o more mods for non-linear free-surface including new variable
1272    o modified multi-dim method to work on cube
1273    o bug fix in KPP (from DM)
1274    
1275    checkpoint40pre9
1276    o added DST advection schemes
1277    o fix MPI bug on SGI's
1278    o modifications for non-linear free-surface
1279    o fixed conditionals for fixed flow/passive tracer only mode
1280    o added tension/strain form of stress tensor
1281    o changes to commenting of arguments for TAF/TAMC
1282    o added/updated many matlab scripts
1283    o added multi-dimensional advection method for tracers
1284      
1285    checkpoint40pre8
1286    o new package rw/
1287      Added method for dumping intermediate local arrays:
1288      mdsio_writetile - same as mdsio_writefield except works from inside
1289                        bi,bj loop
1290      mdsio_writelocal - same as mdsio_writetile except works for local
1291                         arrays
1292      write_local_r? - higher-level wrapper for mdsio_writelocal
1293      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1294      Example given at end of mom_vecinv.F that dumps some local arrays.
1295    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1296      control flux-form versus vector invariant code.
1297      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1298      or genmake -DISABLE ...
1299    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1300      (additional storing is now needed for case vecinv;
1301      currently nothing implemented to switch this storing off
1302      in case fluxform is used since no CPP flag available).
1303    
1304    checkpoint40pre7
1305    o bug fix in dynamics.F
1306      calc_viscosity called before k=1,Nr loop.
1307    o added some #ifdef's ALLOW_PASSIVE_TRACER
1308    o cleaned initialisations in ctrl_map_ini
1309      related to TAF
1310    
1311    checkpoint40pre6
1312    o split dynamics into thermodynamics & dynamics
1313    o corresponding split of calc_diffusivity into
1314      calc_diffusivity, calc_viscosity
1315      (kpp_calc_diff, kpp_calc_visc).
1316    o Added diffkr, kapgm to control variables
1317    o bug fix in gmredi_slope_limit for ldd97
1318    
1319    checkpoint40pre5
1320    o proper initialization of Adams-Bashforth time stepping
1321      + uses forward step for very first step of model (iter=0)
1322    o re-generated *all* output since almost all output is modified by this
1323      change (sorry but we've been putting this one off for about 2 years)
1324      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1325        *not* regenerated since they are already out of date and I don't
1326        want to create the impression that they are suddenly working.
1327    o removed KAP stuff for DEC's
1328    o modified/added many .cvsignore files in */code and */input
1329    o added new expt "solid-body.cs-32x32x1"
1330      + this uses an alternative form of ini_curvilinear_grid.F which
1331        is not necessarily any better than the current one...
1332    
1333    checkpoint40pre4
1334    o added re-initialisations of utrans,vtrans,rtrans in
1335      calc_common_factors which are crucial for TAF.
1336    o extended iMin,jMin range for calc_common_factors,
1337      calc_diffusivity
1338    o added option ALLOW_PASSIVE_TRACER
1339    o a few minor updates and fixes
1340    
1341    checkpoint40pre3
1342    o created calc_gtr1.F for gad package
1343    o split the_main_loop and re-introduced forward_step
1344    o some recomputations of nIter0 for TAMC
1345    
1346    checkpoint40pre2
1347    o Updated to latest branch of AJA, JMC
1348    o Added gradient check package
1349    o Added routines for passive tracer handling
1350    o Added carbon sequestration sensitivity experiment
1351    
1352    checkpoint39
1353     o Modifications and fixes to support TAMC
1354       (mainly missing or wrong directives)
1355     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1356       in addummy_in_stepping
1357     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1358     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1359     o Included following packages:
1360       cal: calendar
1361       exf: external forcing
1362       ecco: essential routines to control use of cal, exf
1363             (NB: this is not the full ECCO environment)
1364     o disabled some packages by default in genmake
1365    
1366    checkpoint38
1367     o see notes_c37_adj.txt
1368     o corrected wrong layer index in external_forcing_t
1369     o replaced the_main_loop/forward_step by the_main_loop
1370     o removed forceoutput from write_state
1371       (replaced criteria for initial/final state)
1372     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1373    
1374    checkpoint37
1375     o mdsio.F routine split and packaged in pkg/mdsio
1376       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1377        used unless genmake -disable=mdsio)
1378     o allow a more precise surface-geopotential gradient for the atmosphere
1379       taking into account the change in space of Alpha (=1/rho) at the surface.
1380     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1381       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1382     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1383       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1384       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1385     o Time-Average diagnostics defined as a pseudo package "timeave".
1386     o pickup files : old pickup (before c35) did not work with new code (c35
1387       and after) unless activating 2 commented lines in initialise-varia.
1388     o Non-Hydrostatic pickup file Pb fixed.
1389     o bug with Rigid-lid version (since c35) fixed.  
1390    
1391    checkpoint36
1392     o implement Crank-Nickelson barotropic time-stepping
1393     o recover Time-Average diagnostics
1394     o fix Pb in checkpoint (PR#19)
1395     o AIM become a standard package ; clean unused CPP_kees
1396    
1397    checkpoint35
1398     o subtantial rewrite of dynamics.f
1399     o allows staggered time-stepping
1400     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1401     o added bottom drag (linear + quadratic)
1402    
1403    checkpoint34
1404     o Modified exchange routines for correct reverse simulation.
1405     o Added verification output to comply with bug fix in impldiff.F
1406       as of c33 (exp2, natl_box).
1407     o Corrected store directives in dynamics.F
1408     o Corrected array boundaries in impldiff.F
1409     o Corrected array dimensions in gmredi.
1410       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1411     o Added routine GLOBAL_SUM_INT to global_sum.F
1412     o Added mdsio_gl.F for ECCO purposes.
1413    
1414    checkpoint33
1415     o Fixed bug in lower BC in impldiff.F
1416     o Fixed confusion about units of forcing arrays in FFIELDS.h
1417       namely Fu,Fv,Qnet,Qsw,EmPmR:
1418       - Removed verification/natl_box/code/external_fields_scale.F
1419         (did not differ from that in model/src)
1420       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1421         (see FFIELDS.h for description)
1422       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1423         kpp_calc.F and kpp_transport_t.F
1424       - Removed model/src/external_fields_scale.F and calls to it
1425       - verification/natl_box uses flux data with "atmospheric" sign so
1426         a special version of external_fields_load.F is used to
1427         change the data as it's read in. This way, the arrays
1428         have the right units and signs at all times tha a user could
1429         possibly use them.
1430     o Corrected genmake to delete a temporary file during configuration
1431    
1432    checkpoint32
1433     o Scaling of forcing fields moved from external_forcing.F to
1434       external_fields_scale.F, called directly after loading fields.
1435     o Surface relaxation terms added to surface tendency fields in
1436       extra subroutine.
1437     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1438       fields.
1439     o Changes in GMRedi to comply with packaging structure.
1440     o Modifications and bug fixes in KPP package.
1441     o Verification experiment for KPP added (verification/nat_box/)
1442    
1443    checkpoint31
1444     o Packages interface brought in line with defined standard
1445       -> new routines packages_...F
1446       -> changes in initialise_fixed.F, initialise_varia.F
1447       -> enables initialisation interface for ECCO package
1448     o Rescaling of external forcing fields immediately after read
1449       (removed from external_forcing.F)
1450       -> new: surface_fields_scale.F
1451       -> affects ini_foorcing.F, external_fields_load.F
1452     o Computation of surface tendencies before tendency updates.
1453       -> new: external_forcing_surf.F
1454     o Change of variable names useGMRedi, useKPP, useECCO
1455     o Further changes in dynamics.F, impldiff.F for TAMC
1456     o Tested for experiments 0, 2, 4.
1457       - not yet tested for GMRedi.
1458       - not yet tested for KPP.
1459    
1460    checkpoint30
1461     o Updates for OBCs
1462     o New experiment for test OBCs (internal_wave)
1463     o New output.txt in verification/exp4/results/
1464     o Updates for KPP: calculation of viscosity corrected, new variables
1465       kpp_dumpFreq and kpp_taveFreq
1466     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1467       and entry for T90 in genmake
1468    
1469    checkpoint29
1470     o packaged KPP and GM/Redi
1471    
1472    checkpoint28
1473     o Corrected initialization of hFacMin for difference vertical coordinates
1474     o Modified calculation of partial cell thickness to more robust algorithm
1475     o config_summary.F: replaced write_1D_... by write_0D_...
1476       read_write.F: added subroutines write_0D_...
1477     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1478       included some initialisations required for TAMC.
1479     o routine calc_isoslopes: modified sqrt computation to make it
1480       differentiable for zero argument.
1481     o routines dynamics, impldiff:
1482       included store directives and tape key computations required for TAMC.
1483     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1484    
1485    checkpoint27
1486     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1487       formulation works properly with variable resolution.
1488     o restructured the calling tree between the_model_main() and dynamics()
1489     o split initialise() into initialise_fixed() and initialise_varia()
1490     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1491       in new routine ini_psurf()
1492    
1493    checkpoint26
1494     o moved some #ifdef in optional routines to encompass everything
1495       except the argument declarations. This was using up some memory.
1496     o fixed macros like _ADT to work with both versions of Linux cpp
1497     o cleaned up some unused and uninitialized variables
1498       (helps when debugging with strict compile options)
1499     o split up CPP_EEOPTIONS.h into options and macros
1500       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1501     o patch for 2 processor JAM mode
1502    
1503    checkpoint25
1504     o updates for OBCs and NH
1505     o dramatically reduced memory usage
1506     o added "JAM" routines for use on Artic network
1507     o parameterization of convection by implicit vertical diffusion
1508     o added a diagnostic of convective index
1509     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1510       (this is was partly for OBCs and NH but also in anticipation of
1511        an explicit free-surface option)
1512     o initial state input files for U and V
1513    
1514    checkpoint24
1515     o Removed some spurious "REAL"s
1516     o Updated KPP to latest version from JPL
1517     o Added a COS(latitude) in horizontal viscosity
1518    
1519    checkpoint23
1520     o Added del^4 diffusion for salt and temperature
1521     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1522    
1523    checkpoint22
1524     o Made many small changes: implicit none, format(i5), etc...
1525     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1526    
1527    checkpoint21
1528     o Introduced new I/O package that supports direct-access records (mdsio.F)
1529     o Split-up mid-level I/O routines
1530     o Updated input data for experiments 0,1,2,4 and 5
1531     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1532    
1533    checkpoint20
1534     o Tidied up open-boundaries some more
1535     o Added non-hydrostatic code
1536     o Fixed some input data
1537     o Modified MPI start-up to work in "coupled" context.
1538    
1539    checkpoint19
1540     o Tidied up directory structure for verification experiments.
1541     o Added new code for open boundaries.
1542     o Corrected advective terms near boundaries.
1543     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1544     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1545     o Split default parameters out of ini_parms.F into set_defaults.F.
1546    
1547    checkpoint18
1548     o Further changes for optional code generation with
1549       CPP - ugh!
1550    
1551    checkpoint17
1552     o Beginning to incorporating modularity
1553       for supporting atmos. and ocean configs.
1554     o Small changes for TAMC complinace
1555     o New ultra simple test case. Barotropic box
1556       configuration "exp0".
1557    
1558    checkpoint16
1559     o Minor changes to exchange routines to support
1560       accumulation in reverse mode. Adjoint of an
1561       assignment is an addition.
1562     o Changes to support compilation by TAMC (LR(1)
1563       syntax) and by g77 under Linux ( 72 character
1564       limit ).
1565    
1566    checkpoint15
1567     Rewrote exchange routines to allow
1568     o General tile <-> tile connectivity.
1569     o TAMC reverse mode flag ( is this really needed? )
1570     o Variable width overlap and exchange region widths.
1571     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1572       shmput/shmget, VIA, SYSV shmem and every other cool
1573       communication method.
1574    
1575    checkpoint14
1576     Consistent isomorphism chages made. These allow dynamical core
1577     to support both pressure and meters as a vertical coordinate.
1578    
1579    checkpoint13
1580     Release which corrects global_max problem and a couple
1581     of KGM time-averaging diagnostic errors. Also contains
1582     a double-gyre experiment setup as well as the baseline
1583     4 degree global template. The double gyre template is
1584     organised to allow it to be applied automatically to
1585     the baseline configuration.
1586    
1587    branch-point-rdot
1588     A few tidy-ups have been made bt the real point of this
1589     check-point (excuse the pun) is to allow a branch to be
1590     made for the purposes of adding the rDot alterations.
1591     I don't want to commit the rDot to the main-trunk until
1592     we've actually tested it...
1593    
1594    checkpoint12
1595     Tidy up and added generic genmake script (formerly
1596     configure script).
1597     Released to testers.
1598    
1599    checkpoint11
1600     Re-arranged initialise() and introduced ini_vertical_grid()
1601     and ini_masks_etc().
1602    
1603    checkpoint10
1604     Introduced the configure script.
1605     Separated out the diags package.
1606     Added template for writing time-averages of tile/intermediate quantities.
1607     Updated SIZE.h in exp2 and made the data big-endian.
1608    
1609  checkpoint9  checkpoint9
1610   MPI fix. Filename changes (meta/data). salbin*y stuff.   MPI fix. Filename changes (meta/data). salbin*y stuff.

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