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revision 1.7 by adcroft, Mon Jun 22 16:24:50 1998 UTC revision 1.230 by adcroft, Wed Dec 17 14:22:38 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o fix deltaTfreesurf in update_cg2d.F (left from c45d_post): affects 2
7      ocean exp. that use NLFS: global_ocean.cs32x15 & global_ocean_pressure
8    o added exf_offset_atemp for Celsius to Kelvin conversion of atemp
9    
10    checkpoint52d_post
11    o re-tiled many expts to allow comparison in multi-processor mode
12      - updated output accordingly
13      - changed hs94.128x64x5 to use intial T from file rather than use the
14        random number generator
15    o add infrastructure in model routines for fizhi and gridalt packages
16    o change global_ocean.cs32x15 because of Pb with GM on CS-grid.
17    o changes to permit hi-res, cubed-sphere, configuration
18      - added useSingleCpuIO capability to mdsio_readfield.F and exf_interp.F
19      - added "#undef ALLOW_USE_MPI" support to eesupp/src/scatter_2d.F
20      - added pkg/exf/exf_set_uv.F for on-the-fly interpolation and rotation
21        of surface winds for the cube
22      (A verification experiment, based on global_ocean.cs32x15, but with
23       pkg/seaice turned on and with on-the-fly interpolation from the NCEP
24       Gaussian grid is described in MITgcm_contrib/high_res_cube/README_ice,
25       complete with example surface forcing files and matlab scripts to look
26       at the output and compare it with that of global_ocean.cs32x15.)
27    o packages pickup: $PKG_write_pickup called from packages_write_pickup ;
28       but call to $PKG_read_pickup remains in $PKG_ini_vars: change CD_code
29       to conform to the common rule.
30    o check-in the first version of the coupler + interfaces for multi-components
31       set-up (Chris's version, adapted to work on cubed-sphere grid); use MPI.
32       - imply modification in eesupp (MPI_COMM_MODEL < MPI_COMM_WORLD).
33       - atmosphere: use pkg aim_v23 ; no sea-ice for now.
34       - ocean and atmos. share the same horizontal grid (no interpolation).
35       - exchanges between component and coupler is done in forward_step
36    o new verification experiment, cpl_aim+ocn:
37       coupled ocean - AIM atmosphere on cs32 grid.
38    
39    checkpoint52d_pre
40    o surface flux time-av diagnostic modified for NLFS & RealFreshWater
41    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
42    
43    checkpoint52c_post
44    o Fixing OPTIONS files for use of exf:
45      - ALLOW_ECCO not needed
46      - ECCO_CPPOPTIONS.h should not be included from
47        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
48        as has been the case in the past
49      - All cal/exf related options are currently set in
50        single header file. Should remain so until we
51        agree on a consistent new policy.
52    o Removed all CPP options for cal package.
53      cal has no more CPP options.
54    o modified STOREs in GAD_ADVECTION
55    o corrected key comp. for passkey
56    
57    checkpoint52b_post
58    o new version: "thsice" of thermodynamic sea-ice pkg:
59     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
60     - modify fluxes but do not change theta directly;
61     - light cleaning of bulk_force pkg (still needed with thsice).
62     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
63       + output_thsice.txt to test thsice & bulk_force pkgs.
64    o put back grid & coriolis monitor output.
65    checkpoint52b_pre
66    
67    o call "do_the_model_io" at the beginning (=> dump initial state)
68    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
69    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
70      (need info on NUMBER_OF_PTRACERS)
71    o missing PTRACERS headers in some routines
72    o default tamc.h in pkg/autodiff supposed to crash
73      to ensure proper customization
74    
75    checkpoint52a_post
76    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
77      - moved surfaceTendencyTice from pkg/seaice to main code
78      - subroutine FREEZE_SURFACE now limits only surface temperature
79        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
80        => new output.txt for global_ocean.cs32x15 & global_with_exf
81      - keep the old version of FREEZE for backward compatibility;
82        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
83      - corresponding modifs for TAF directives
84    o added surface flux output variables to TIMEAVE_STATVARS
85    o time-averaged output for pkg/ptracers
86    o fix problem with ECCO-related divided adjoint
87      snapshot file was missing some ad-variables,
88      but no warning issued by TAF
89    
90    checkpoint52a_pre
91    o some bug fixes for #undef REAL4_IS_SLOW
92    
93    checkpoint52 = ecco_c52_e35
94    o after testing adjoints of checkpoint51u_post
95    
96    checkpoint51u_post
97    o this is the post-merge tag of the ecco-branch
98      (needs another clean checkout and re-testing)
99    o various natl_box_adjoint configs and results
100      but no input fields
101    o obcs adjoint not yet merged!
102    o adding ECCO global 1x1 and 2x2 degree configs
103    o updated/extended some store directives for seaice
104    o pkg/ecco now containes ecco-specific part of cost function
105    o top level routines the_main_loop, forward_step
106      supersede those in model/src/
107      previous input data.cost now in data.ecco
108      (new namelist ecco_cost_nml)
109    o in ctrl/ cleaned some cross-dependencies and updated CPP options
110    
111    checkpoint51t_post
112    o this is the pre-merge tag of the ecco-branch
113    
114    checkpoint51s_post
115    o cleanup: removed various obsolete #define-s
116    o pkg/grdchk
117      - renamed 'ph-grd 3' to 'grad-res'
118      - merged from ecco-branch
119        (remaining bug fixes for obcs gradient checks)
120      - additional high-precision output for testreport
121        (grep for 'precision_grdchk_result')
122    
123    checkpoint51r_post
124    o cleaned up or removed CPP_OPTIONS.h files
125    o updated results for some of the tests to reflect the new
126      optfiles (-ieee: -O0 instead of -O3)
127    
128    checkpoint51q_post
129    o cd_code:
130      - moved cd_scheme.F -> cd_code_scheme.F
131      - separate read_checkpoint from cd_code_ini_vars.F
132      - separated cd_code part from write_checkpoint
133      - updated AD_SOURCE, generated .flow
134      - added CD_CODE_VARS.h to the_main_loop
135      - Moving cd_code specific store dir.s to pkg/cd_code
136    o ctrl package totally restructured
137      - pack/unpack now optional and decoupled from
138        xx_/adxx_ I/O
139      - ctrl_pack/unpack cleaned
140        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
141      - confined inclusion of AD_CONFIG.h to where necessary.
142    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
143    
144    checkpoint51p_post
145    o create initial cd_code package
146      - WARNING: the initialization of fields within packages
147        is broken because INI_FIELDS (where READ_CHECKPOINT is
148        called) is called *before* PACKAGES_INIT_VARIABLES.
149        This seems to be backwards since
150        1) its important to initially zero the entire field including
151           the "halo" region
152        2) zeroing needs to be done *before* reading pickup info
153           and the pickup call might or might not happen in any
154           particular run
155      - this needs an overhaul for R2
156    o cleanup verification/*/code/GMREDI_OPTIONS.h
157    o cleanup testreport
158    
159    checkpoint51o_post
160    o bringing AD-related verif's up to date with genmake2
161      - carbon/
162      - global_ocean.90x40x15/
163      - hs.94.1x64x5/
164      - (front_relax/ )
165    o (more) consistent directory structure for AD-related verif.'s
166    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
167    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
168    o bug fix in find_alpha.F for MDJWF:
169      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
170        change rho -> rho-rhoConst
171      - replace call find_rho to find_rhonum
172    o initialisation of rFlx extended to full array (required by TAF)
173      and shifted to thermodynamics
174    o removed PTRACERS.h in ptracers routine
175    o added surfacetendencyPtr to S/R parameter list pracers_forcing
176    o Correcting initialisations for fVerU, fVerV.
177    o helping TAF to recognize dependency on kUp for
178      fVerU, fVerV
179    o Replacing delZ by delR in pkg/ctrl/
180    checkpoint51o_pre
181    
182    o undid all of cp51 pending some cleanups and discussion
183    o added the [#include "AD_CONFIG.h"] statement to all files that need
184       it for adjoint/tl #defines
185     o re-worked the build logic in genmake2 to support AD_CONFIG.h
186     o removed tools/genmake since it no longer works
187    
188    checkpoint51n_post
189    o modifications to make FREEZE flux visible to pkg/kpp
190      - moved surfaceTendencyTice from pkg/seaice to main code
191      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
192      - subroutine FREEZE now limits only surface temperature
193        (this means new output.txt for global_ocean.90x40x15,
194         global_ocean.cs32x15, and global_with_exf)
195    o added surface flux output variables to TIMEAVE_STATVARS
196    
197    checkpoint51n_pre
198    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
199    o added [#include "AD_CONFIG.h"] to all files that use the following
200      defines:
201      - ALLOW_ADJOINT_RUN
202      - ALLOW_TANGENTLINEAR_RUN
203      - ALLOW_ECCO_OPTIMIZATION
204    
205    checkpoint51m_post
206    o incorporating changes to get TAMC/TAF working in genmake2
207      - added new TAMC/TAF targets to the Makefile
208      - various cleanups related to package handling
209      - these changes should have no impact on the forward model
210    
211    checkpoint51l_post
212    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
213     - faster algorithm for cal_addtime.F
214     - higher precision arithmetic, where needed
215     - pkg/exf *startdate variables changed from calendar date to
216       model integration time
217    
218    checkpoint51l_pre
219    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
220    o enable to apply restoring on S & T only in a latitude band.
221    o update output (external_forcing_surf modif. change truncation errors)
222       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
223    
224    checkpoint51k_post
225    o change default to: useNHMTerms=.FALSE.
226     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
227       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
228     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
229        exp1, ideal_2D_oce
230     - change data file of oceanic exp (leave the results unchanged for now)
231       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
232    o set gravitySign automatically according to the vertical coordinate used
233      (and change sign: back to "logical" value: +1 when R increases downward)
234    o added an include barrier to the default CPP_OPTIONS.h and
235      removed the #include "PACKAGES_CONFIG.h" from it
236    o fix a bug in mom_fluxform (from chk51j_post)
237    
238    checkpoint51j_post
239    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
240    o adjusted some flow directives (dynamics, thermodynamics)
241    o added cubed-sphere case to test cost function
242    o heckpoint_lev?_directives.h now include
243      pkg-specific directives, whenever those are enabled.
244    o Moving pkg-specific flow directives to corresponding pkg
245      Moving pkg-specific differentiation list to corresponding pkg
246      Moving pkg-specific checkpoint-lev storing to corresponding pkg
247      ---> conventions are
248           - pkg_ad.flow
249           - pkg_ad_diff.list
250           - pkg_ad_check_lev?_dir.h
251    
252    checkpoint51i_post
253    o merge of the branch-genmake2
254      - knowingly breaks the older genmake
255      - automatic generation of all ALLOW_${PKG_NAME} defines
256      - new testreport supersedes older testscript
257    o large number of package inclusion and header cleanups
258    checkpoint51i_pre
259    
260    o new output for adjoin of global ocean vector invariant
261    o fix for checkpoint of thermodynamic seaice and bulk_force
262    o Steph gchem various cleanups
263    
264    checkpoint 51h_pre
265    o fixed some single quotes
266    o modify gchem pkg to be more versatile
267    o modifications to clean up dic pkg
268    o add pkg/cfc
269    
270    checkpoint51g_post
271    o provide links for ARPACK and ADM*TLM
272    o start removing verification/vero/
273    o update AD-related stuff
274      (in particular some IF-statements in model/src/ routines)
275    o adding to verification/global_ocean.90x40x15/ adjoint of
276      vector invariant setup
277    
278    checkpoint51f_post
279    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
280    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
281      of tracer Green's fucntions for ocean inversion project.
282    
283    checkpoint51f_pre
284    o Added on-the-fly spatial interpolation capability
285        "USE_EXF_INTERPOLATION" to pkg/exf.
286      - This is a temporary Cartesian-grid hack until
287        the super-duper ESMF coupler becomes available.
288      - See verification/global_with_exf/README for usage example.
289      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
290        flags and modified pkg/seaice accordingly.
291    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
292        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
293        non-local transport term.
294    
295    checkpoint51e_post
296    o pkg/mom_vecinv:
297      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
298      - add time-ave diagnostic of vorticity advection.
299    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
300    o atmospheric geopotential: - include water vapor effect;
301                                - use p^kappa in p* scaling.
302    o land pkg: read initial state from files.
303    o AIM : add stratospheric drag in the upper level
304    
305    checkpoint51d_post
306    o change function ILNBLNK (=> last non-blank char.) to return zero
307      (instead of the string length) when the string. char is empty
308    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
309    o modif's to restore TAMC compatibility
310      - avoid "_d" constructs in PARAMETER declarations
311      - avoid interrupting lines by comment lines
312    o Use cluster local disks for purely local I/O
313      vs. globally visible disks needed for ctrl stuff
314      (merged from ecco-branch)
315      - new active_file_loc... and mdsio_..._loc routines
316      - affected packages: autodiff, ctrl, grdchk, mdsio
317    
318    checkpoint51c_post
319    o introducing integer flag debugLevel
320      - debLevZero: suppress all output
321      - debLevA: standard
322      - debLevB: equivalent to current debugMode=.TRUE.
323    o introducing pathname variable mdsioLocalDir for mdsio
324      that can be specified at runtime
325      (relevant for cluster I/O to local disk)
326    `
327    >>>checkpoint51b_post
328    adjoint of ptracers
329    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
330    o extended state in checkpoint_lev?, etc.
331    o alternative ctrl/cost with tr1 or ptracer
332    o new comlev1_bibj_ptracers
333    o new ptracers.flow
334    o made ptracers_forcing same as external_forcing_s
335    o added verification for adjoint with ptracers
336      - adm. grdchk fail so far
337      - tlm. grdchk OK
338      - checked tapelev/comlev recomputations: OK
339    <<<checkpoint51b_pre
340    
341    checkpoint51a_post
342    o added code for biogeochemistry package
343      - new pkgs: dic, gchem
344      - new subroutine in ptracers
345    o modify code for biogeo packages
346      - in model/src and pkg/ptracers
347    
348    checkpoint51
349    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
350      - autodiff, ctrl, exf, grdchk, seaice
351      kept separate packages
352      - cost, ecco, obcs
353    o updating verification/internal_wave, verification/lab_sea
354      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
355    
356    checkpoint50i_post
357    o Preparing next differentiable checkpoint and sync
358      of MAIN vs. ecco-branch
359      - 1st step: this one is differentiable
360      - 2nd step: next(! not this) checkpoint will have updated packages
361                  from ecco-branch)
362    
363    checkpoint50h_post
364    o new package "land": provide surface BC for AIM.
365    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
366    o AIM: use true log-P extrapolation for near surface temp (= as in
367        F.Molteni paper) ; update aim.5l_cs output.
368    o New variable in PARM03 for more flexible pickups
369    o somewhat cleaned package initialisation sequence for
370      ctrl/ cost/ ecco/ in packages_... routines
371    
372    checkpoint50g_post
373    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
374      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
375      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
376        made the default because of faster convergence than ADI
377    
378    checkpoint50f_post
379    o exf totally restructured
380      - replaced all exf_set_ routines by one generic exf_set_gen.F
381        and made sure it's still differentiable
382      - split exf_getffields.F into new exf_bulkformulae.F
383      - exf_inscal_/exf_outscal_ suffixes consistent with field names
384      - updated adjoint/makefile and relevant verif. accordingly
385    
386    checkpoint50f_pre
387     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
388          + change Evap over land. (update aim.5l_cs output)
389     o added missing .cvsignores and made uniform across expts
390     o changed configuration of tidal_basin_2d expt
391     o added pkg/debug functions for tracing code in fatal crashes
392     o tidied pkg/monitor to use MONITOR_OPTIONS.h
393     o new fn in pkg/monitor to stop model if solution grows too big
394     o removed lots of single quotes from comments
395    
396    checkpoint50e_post
397    o make KPP work with PTRACERS
398     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
399       nearly a copy of kpp_transport_s
400     - there is no analogue to SurfaceTendencyS, so I have to use
401       gPtr(of the surface layer) instead
402    o add a new platform SunFire+mpi (SunFire 15000) to genmake
403    checkpoint50e_pre
404    
405    checkpoint50d_post
406    o change kpp output from multiple-record state files to single-record state
407      files analogous to write_state.F
408    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
409      analogous to the cg2d-related output.
410    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
411      so that writing to internal file fn (with length 512) fails.
412    checkpoint50d_pre
413    
414    checkpoint50c_post
415    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
416    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
417    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
418    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
419    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
420    
421    checkpoint50c_pre
422    Merging from release1_p13:
423    o bug fix for pkg/seaice dynamic solver
424    o Added SEAICE_initialHEFF to pkg/seaice
425    
426    checkpoint50b_post
427    o store u*,v* in gU,V instead of in guNm1,gvNm1
428    o in order to put the momForcing out of the Adams-Bashforth:
429      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
430      to timestep.F
431    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
432    o re-generate output for highly sensitive test-exp:
433       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
434    
435    checkpoint50b_pre
436    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
437    o corrected CPP option mismatch in exf_Bulk... functions for case
438      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
439    
440    checkpoint50a_post
441    o Bug fix for merging between c50 and KPP.
442      ikey was passed from thermodynamics to kpp_calc via
443      common block rather than being recomputed in kpp_calc,
444      in contradiction with new key itdkey.
445      New key ikppkey created, and tamc.h headers updated.
446    
447    checkpoint50
448    - 2nd step of merge with ecco-branch:
449      merge changes in ecco-branch back into main trunk
450    - bug fix in find_alpha
451    - more storing in gmredi_calc_tensor.F, kpp_routines.F
452    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
453    - merged some sliced AD support routines
454    
455    checkpoint49
456    merged from ecco-branch:
457    o exf:
458      - Enable initialisation of forcing fields to constant
459        (runtime) values.
460      - in exf_getffields.F
461        Reduce i-/j-loop to interior domain, discarding overlaps.
462        That also fixes wrong TAF-key computations for key_1, key_2
463        with bulf formulae.
464      - exf_init.F modify #ifdef for exf_init_evap
465      - exf_getffieldrec.F, ctrl_getrec.F
466        The following INT-usages are not safe:
467          fldsecs  = int(fldsecs/fldperiod)*fldperiod
468          fldcount = int(fldsecs/fldperiod) + 1
469        and were modified.
470    o autodiff: checkpoint_lev...
471      - updated storing for bulk formulae (some arrays were missing)
472      - added state for seaice package
473      - synchronized with main branch
474    o DIVA:
475      Modif.s in
476      - the_main_loop.F
477      - the_model_main.F
478      and added cost_final_restore.F cost_final_store.F
479      o With these changes, it is possible to fully separate
480        the first forward run to compute the cost function (mdthe_main_loop)
481        and adjoint runs over individual DIVA intervals (adthe_main_loop)
482        into separate model executions.
483        This enables better tuning of DIVA to given queue sizes.
484      o Loss of cost function value in consecutive DIVA runs is
485        fixed by storing to 'costfinal' file.
486      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
487        beginning/end of adjoint integration is accounted for.
488      The current changes apply to TAF-1.4.26.
489      TAF has one remaining bug, requiring one manual change
490      (see MITgcm manual).
491    o cal: synchronized between MAIN and ecco-branch
492    
493    checkpoint48i_post
494    o Changes to restore differentiability of code w.r.t. previous tag
495      (mostly adding new routines to make list and replacing
496      pressure by totPhiHyd).
497    o Updated and merged grdchk package
498      - has both ADM and TLM checks
499      - works for single- and multi-proc.
500      - output cleaned
501      - worked successfully for parallel DIVA
502    o genmake:
503      - Adding -platform=SP4
504      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
505    o Modif. for DIVA:
506      ctrl_unpack should not be called in intermediate DIVA interval.
507      (similar thing would apply for active files such as
508      tbar, sbar, psbar, which should not be reinitialised;
509      only relevant for ecco-branch)
510    
511    checkpoint48h_post
512    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
513    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
514    o Added SEAICE_initialHEFF to pkg/seaice
515    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
516    
517    checkpoint48g_post
518    --- EOS:
519    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
520      store total Potential in totPhyHyd for diagnostics & EOS.
521    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
522    --- Pressure/geopotential gradient:
523    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
524    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
525      ( changes results of global_ocean_pressure )
526    o NLFS + z-coord.: add eta*Rho' contribution.
527    o accurate phiHyd when using interface-W at the middle between 2 centers
528     ( changes results of ideal_2D_oce )
529    o includes r* 2nd term in potential gradient.
530    
531    checkpoint48f_post
532    Merging from release1_p12:
533    o Modifications for using pkg/exf with pkg/seaice
534      - improved description of the various forcing configurations
535      - added basic radiation bulk formulae to pkg/exf
536      - units/sign fix for evap computation in exf_getffields.F
537      - updated verification/global_with_exf/results/output.txt
538    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
539      (SBO) core products, including oceanic mass, center-of-mass,
540      angular, and bottom pressure (see pkg/sbo/README.sbo).
541    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
542      to avoid negative values in shallow regions.
543      - updated verification/natl_box/results/output.txt
544      - updated verification/lab_sea/results/output.txt
545    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
546    o Added useSingleCpuIO option (see PARAMS.h).
547    o Updated useSingleCpuIO option in mdsio_writefield.F to
548      work with multi-field files, e.g., for single-file pickup.
549    o pkg/seaice:
550      - bug fix in growth.F: QNET for no shortwave case
551      - added HeffFile for specifying initial sea-ice thickness
552      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
553    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
554      kpp_transport_t.F, forward_step.F, and the_main_loop.F
555    o pkg/seaice:
556      - adjoint-friendly modifications
557      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
558    
559    checkpoint48e_post
560    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
561    o dynamics: change definition of computational domain & adapt mom_fluxform
562      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
563    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
564        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
565        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
566        global_ocean.90x40x15 global_with_exf global_ocean_pressure
567        inverted_barometer solid-body.cs-32x32x1
568      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
569    
570    checkpoint48d_post
571    o in preparation for r*:
572     a) use pre-computed gradient of hydrostatic potential:
573        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
574     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
575        => affects results of glob_oce_pressure (different truncation error)  
576      update output.txt of ideal_2D_oce & global_ocean_pressure
577    
578    checkpoint48d_pre
579    o in preparation for r*:
580      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
581      pass the 2 comp. of the grad. as arguments to momentum S/R.
582      but for the moment, only used if it does not change the results.
583    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
584    
585    checkpoint48c_post
586    Modifications in treatment of initial flux forcing controls
587    to avoid extra storing of flux fields.
588    
589    checkpoint48c_pre
590    o Added tidal_basin_2d experiment (currently 1D!)
591    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
592    
593    checkpoint48b_post
594    o r* coordinate added in #ifdef NONLIN_FRSURF block.
595     (modification to pressure gradient not yet implemented)
596    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
597      (for U & V) that are used for vertical advection of momentum.
598    
599    checkpoint48a_post
600    o In preparation for r*, use temp. array to compute vertical transport
601       in flux-form momentum pkg. => change results of few test-exp.
602      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
603                        lab_sea, natl_box & plume_on_slope
604    
605    checkpoint48
606    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
607    
608    checkpoint47j_post
609    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
610    o moved adexch from forward_step to addummy_in_stepping
611    o added exch in ctrl_map_...
612    o aveFreq.=0. at end of cost_final to avoid overwrite in
613      reverse checkpointing loop
614    o Yet more changes in gmredi:
615      * adgmredi_calc_tensor
616        avoiding all recomputation of gmredi_slope_limit
617      * adgmredi_x/y/rtransport
618        added flag for excessive storing to avoid recomp. of
619        u/v/rtans, dTdx/y/z
620        -> this is not really necessary and very memory-consuming
621      * adgmredi_slope_psi:
622        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
623      * gmredi_slope_limit
624        re-activated full calculation of taperfct for case 'ac02'
625    o updating verification/ adjoints of carbon, global_ocean.90x40x15
626    
627    checkpoint47i_post
628    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
629    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
630      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
631    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
632    o gmredi: fix few bugs.
633    
634    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
635    This will be a good checkpoint to plug into the ecco-branch.
636    o few modif.'s to get latest version adjointed
637      (mainly kick out code in ini_linear_phisurf)
638    o modif's to run adjoint with exactConserv
639    o case GM_BOLUS_ADVEC should be cleaned
640      S/R gmredi_slope_psi should be cleaned
641    o verification/carbon now has exactConserv=.TRUE.
642    
643    checkpoint47g_post
644    o time-average AIM output: becomes independent from statvars time-average
645      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
646    o After TAF bug fix:
647      Tested adjoint of gmredi package.
648      Tests were done with checkpoint47 rather than with latest
649      checkpoint47f_post since the latter is broken for the adjoint
650      verification/carbon/ contains both ADM and TLM gradient checks.
651    Here they are, before they get changed/lost/stolen.
652    Mostly modif.'s to fix numerical sensitivities.
653    Gradient checks OK for
654    - GM_taper_scheme:
655      * clipping
656      * ac02
657      * linear
658      * glw91
659      * dm95
660      * ldd97
661    - GMREDI_OPTIONS:
662      * GM_VISBECK_VARIABLE_K
663      * GM_NON_UNITY_DIAGONAL
664      * GM_EXTRA_DIAGONAL
665      * GM_BOLUS_ADVEC
666    in conjunction with data.gmredi parameters to be checked in
667    in a few minutes under verification/carbon/code/
668    
669    checkpoint47f_post
670    Merging from release1_p10:
671    o modifications for using pkg/exf with pkg/seaice
672      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
673        and SEAICE_EXTERNAL_FLUXES
674      - pkg/exf CPP options EXF_READ_EVAP and
675        EXF_NO_BULK_COMPUTATIONS
676      - usage examples are Experiments 8 and 9 in
677        verification/lab_sea/README
678      - verification/lab_sea default experiment now uses
679        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
680    
681    checkpoint47e_post
682    o created a tag prior to creating a branch
683    
684    checkpoint47d_post
685    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
686      at the bottom boundary had an erroneous half slip boundary condition
687    o added bottom drag and no slip boundary condition capabilities to
688      oceanic pressure coordinates code
689    o added new verification experiment global_ocean_pressure, this experiment is
690      also described in the tutorial section of the manual
691    checkpoint47d_pre
692    
693    checkpoint47c_post
694    o Added a verification experiment for a global cubed-sphere ocean run
695      -  verification/global_ocean.cubed32x32x30
696      -  uses pkg/therm_seaice and pkg/bulk_forcing
697    
698    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
699    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
700      when using P-coordinate; only implemented for atmospheric config.
701    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
702      NOTES: requires option NONLIN_FRSURF to be "#define".
703    o update advect_xz/results/output.txt (left from checkpoint44g_post)
704    
705    checkpoint47b_post
706    Merging from release1_p9:
707    o pkg/seaice
708      - removed GOTO's and added taf directives
709      - double precision constants to reduce the g77 (Linux)
710        to F77 (SGI) differences reported in release1_p8
711    o tools/genmake
712      - added SGI options
713    o verification/testscript
714      - updated to that of checkpoint47a_post
715    o verification/global_ocean.90x40x15/input/eedata
716      - modified for SGI f77 compatibility
717    o verification/lab_sea
718      - added description of sea-ice model
719      - added missing matlab routines
720      - added test of thermodynamics parallelization
721    
722    checkpoint47a_post
723    o new pkg: aim_v23
724     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
725       for now, keep the same surface forcing as before.
726     - Part-Cell implemented into AIM; check that Heat & Water are conserved
727     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
728     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
729    o add diagnostic of surface correction term in monitor output
730    
731    o bulk_force and therm_seaice
732    - Two packages:  bulk_force (Bulk forcing)
733      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
734    - Earlier integration from Stephaine Dutkiewicz
735      and Patrick Heimbach.
736    - Two ifdef statements for compile time,
737       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
738    
739    checkpoint47
740    differentiable version of checkpoint46n_post
741    o bug fix in quasihydrostaticterms
742    o * "clean" adjoint code (in terms of extensive recomputations)
743        can now be obtained for all GMREDI options (i.e. for
744        - GM_VISBECK_VARIABLE_K
745        - GM_NON_UNITY_DIAGONAL
746        - GM_EXTRA_DIAGONAL
747        - GM_BOLUS_ADVEC )
748      * However, wrong gradient check problem remains unsolved.
749      * New CPP options have been introduced for different
750        tapering schemes
751    o external_fields_load now part of differentiation list
752    o pressure needs multiple storing;
753      would be nice to have store_pressure at beginning or
754      end of forward_step, e.g. by having phiHyd global (5-dim.)
755      (NB: pressure is needed for certain cases in find_rho,
756      which is also invoked through convective_adjustment).
757    o recomputations in find_rho for cases
758     'JMD95'/'UNESCO' or 'MDJWF' are OK.
759    o #define ATMOSPHERIC_LOADING should be differentiable
760    o ini_forcing shifted to begining of initialise_varia
761    o Incorporating QNVS line search routines into MITgcm
762      (this is separate code, and therefore not under pkg)
763      lsopt/, optim/
764    o Updated verification/carbon/
765      - #define GM_VISBECK_VARIABLE_K
766      - GM_taper_scheme    = 'ldd97'    
767    
768    checkpoint46n_post
769    Merging from release1_p8:
770    o verification/natl_box:
771      updating new external_fields_load routine
772    o New package: pkg/seaice
773      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
774      The sea-ice code is based on Hibler (1979-1980).
775      Two sea-ice dynamic solvers, ADI and LSR, are included.
776      In addition to computing prognostic sea-ice variables and diagnosing
777      the forcing/external data fields that drive the ocean model,
778      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
779      The implied surface heat flux is then stored in variable
780      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
781      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
782      non-local transport term.  Because this call precedes model
783      thermodynamics, temperature under sea-ice may not be "exactly" at
784      the freezing point by the time theta is dumped or time-averaged.
785      N.B.: fairly large differences in accuracy occur across
786            different platforms/compilers; comparison between
787            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
788            generated output gives:
789       T           S           U           V
790      C D M    c        m  s        m  s        m  s        m  s
791      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
792      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
793      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
794    
795      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
796    o GAD:
797      - generated new common blocks to account for call of
798        same gad routines with differing traceridentities
799        (needed to modify tracerIdentity indices in GAD.h)
800      - generated separate common blocks for case useCubedSphereExchange
801        (Department of Futurology)
802      - parameter lists to gmredi_?transport: added tracerIdentity
803      - added new key indices to tamc.h
804    o external_fields_load:
805      - added this routine to TAF list
806      - needed to make some common blocks global and additional storing
807        along the same lines as exf package (checkpoint_lev?_directives.h)
808    o exf:
809      updated external forcing package
810      - bug fixes carried over from ecco-branch
811        (missing OBCS_OPTIONS.h in two routines)
812      - enable easy to use "no forcing".
813      - added exf I/O for atmospheric loading
814      - added exf I/O for runoff data
815      - transfered scaling between exf <-> MITgcm to exf namelist
816    o Adding new verification experiment global_with_exf.
817      This verification experiment is almost identical to the
818      global_ocean.90x40x15 experiment, except that it uses
819      the exf (and cal) package instead of the
820      external_fields_load routine (cf README file).
821    
822    checkpoint46m_post
823    o modified testscript to return -- when there are no lines of "%MON" output
824    o added new flag "quasiHydrostatic" for QH mode
825      and new routine quasihydrostaticterms()
826    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
827      New routine: mom_u_coriolis_nh()
828    o fixed sign of non-hydrostatic metric terms in u and v equations.
829      Depend on correct sign of gravitySign.
830    o added work.pc* to .cvsignore in aim directories using ifc
831    o introduced flag for controllin non-hydrostatic metric terms
832    o removed gravitySign from PARM04
833    o switched to g77/ifc from pgf77 in aim experiments
834    
835    checkpoint46l_post
836    o made convective adjustment work with pressure coordinates:
837     - changed the direction of k-loop in convective_adjustment.F for the
838       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
839     - adjusted the reference pressure k-index in convective_adjustment.F
840     - adjusted the convection condition in convect.F (in analogy to
841       calc_ivdc.F)
842     - convective_adjustment no longer computes anything on the halos
843     - removed the warnings about negative salinity from find_rho.F and
844       find_alpha.F; instead the new routine look_for_neg_salinity, called
845       at the beginning of find_rho, find_alpha, and find_beta, does a
846       check of the entire slice, if CPP-option
847       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
848    checkpoint46l_pre
849    
850    checkpoint46k_post
851    o fixed the verification/global_ocean.90x40x15 experiment:
852     - new bathymetry (the world according to A., JMC, and M.)
853     - new initial fields and forcing fields (*.bin files)
854     - new POLY3.COEFFS (for the next release one should switch to a full
855       equation of state: JMD95P or MDJWF)
856     - fixed several errors and redundancies in the data file
857     - experiment uses looped cells
858     - added matlab directory with diagnostic scripts for plotting of output
859    
860    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
861     - read AIM physics parameters from a file (data.aimphys)
862     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
863    
864    checkpoint46j_post
865    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
866    o move wVel computation at the end of the time step, in S/R integr_continuity
867    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
868    o update timeave pkg for wVel diagnostic.
869    checkpoint46j_pre
870    
871    checkpoint46i_post
872    o Clean up AIM package (and keep the results unchanged):
873      include CPP_OPTION and use IMPLICT NONE in all routines ;
874      declare all the variables _RL ; use _d 0 for all numerical constants.
875      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
876    
877    checkpoint46h_post
878    o cleaned up the use of rhoNil and rhoConst.
879      - rhoNil should only appear in the LINEAR equation of state, everywhere
880        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
881        and the dynamical equations are all divided by rhoConst
882    o introduced new parameter rhoConstFresh, a reference density of fresh
883      water, to remove the fresh water flux's dependence on rhoNil. The default
884      value is 999.8 kg/m^3
885    o cleanup up external_forcing.F and external_forcing_surf.F
886      - can now be used by both OCEANIC and OCEANICP
887    checkpoint46h_pre
888    
889     Added code to convert surface volume flux (fresh water) into
890     a mass flux when using P coordinates in the ocean (OCEANICP).
891     Note: It assumes you have set rho0=rhoConst=density of fresh water.
892    
893    checkpoint46g_post
894    o Include a new diagnostic variable phiHydLow for the ocean model
895      - in z-coordinates, it is the bottom pressure anomaly
896      - in p-coordinates, it is the sea surface elevation
897      - in both cases, these variable have global drift, reflecting the mass
898        drift in z-coordinates and the volume drift in p-coordinates
899      - included time averaging for phiHydLow, be aware of the drift!
900    o depth-dependent computation of Bo_surf for pressure coordinates
901      in the ocean (buoyancyRelation='OCEANICP')
902      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
903        Theta, Salinity, and Pressure in the parameter list. This routine is
904        presently contained in find_rho.F. This routine does not give the
905        correct density for 'POLY3', which would be a z-dependent reference
906        density.
907    o cleaned up find_rho
908      - removed obsolete 'eqn' from the parameter list.
909    o added two new verification experiments: gop and goz
910      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
911    checkpoint46g_pre
912    
913    checkpoint46f_post
914    o Enable tangent linear (forward mode) gradient checks:
915      - extended active file handling to g_... files
916      - added TANGENT_SIMULATION to theSimulationMode
917      - extended grdchk package accordingly
918    o added tangent linear setup in verification/carbon/code_ftl
919    o added adjoint setup in verification/front_relax/code_ad
920    
921    checkpoint46e_post
922    o Added new equation of state -> MDJWF
923      - EOS of McDougall et al., 2002, JAOT, submitted
924      - caveat: the equation of state is only valid for a smaller (more
925        realistic?) range of values than JMD95P/Z and UNESCO
926      - added masks to the calculation of pressure in store_pressure
927      - added more check values for density in check_eos (ini_eos.F), some of
928        the old check values are out of the range of the MDJWF-eos, so don't
929        expect perfect matches for those
930    checkpoint46e_pre
931    
932    checkpoint46d_post
933    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
934      'OCEANICP', also initialised field pressure correctly in ini_eos in the
935      case of pressure coordinates. eosType='JMD95Z' in
936      combination with buoyancyRelation='OCEANICP' now causes an error.
937    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
938      in find_alpha/beta.
939    checkpoint46d_pre
940    
941    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
942      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
943    
944    checkpoint46c_post
945    o Changes necessary for ocean in p-coordinates
946     -  Added new buoyancy relation = 'OCEANICP'
947     -  Added new parameters = gravitySign (this used to be contained inside
948        the factor dRdZ which I added when we first switched to R coordinates).
949     X GM/Redi is not compatible (yet)
950     X bottom drag and no-slip need to be debugged.
951    checkpoint46c_pre
952    
953    checkpoint46b_post
954    o Added new equation of state -> JMD95Z and JMD95P
955      - EOS of Jackett and McDougall, 1995, JAOT
956      - moved all EOS parameters into EOS.h
957      - new routines ini_eos.F, store_pressure.F
958    o Added UNESCO EOS, but not recommended because it requires
959      in-situ temperature (see JMD95)
960    o Modified formatting for knudsen2.f in utils/knudsen2 and added
961      unesco.f to be used with POLY3
962    checkpoint46b_pre
963    
964    checkpoint46a_post
965    o Added (atmospheric) pressure loading
966      - new field in FFIELDS.h, etc...
967      - new cpp flag ATMOSPHERIC_LOADING
968    o Changed hFacC to _hFacC in calc_phi_hyd.F
969    o Added SHORTWAVE_HEATING to some files for consistency
970    checkpoint46a_pre
971    
972    checkpoint46
973    further merges from release1_p5
974    o new ctrl package
975      - adopted from ECCO environment to enable optimization
976      - added Eliassen Palm fluxes to controls
977    o added Eliassen Palm flux controls to gradient check package
978    o cost package
979      - Compatible with new ctrl package
980      - added Eliassen Palm cost hooks
981      - modif's of existing cost functions
982    o Adjoint-related bug fixes in kpp:
983      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
984      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
985    o autodiff package
986      - flow directives:
987        + new for S/R do_the_model_io
988        + enhanced for S/R checkpoint
989        + new gmredi.flow
990      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
991        disable adcommon.h/g_common.h by default.
992      - fixed problem for adjoint of global_max
993    o modified verification/carbon/
994    o New setup for adjoint of global_ocean
995    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
996    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
997    o incorporated hooks for sponge layer code (external_forcing.F)
998    
999    checkpoint45d_post
1000    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
1001    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
1002      (affects plume_on_slope "cg2d" output)
1003    o add new parameter deltaTfreesurf for free-surface time stepping
1004    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
1005    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
1006    o change phiMin in exp1 (to agree with documentation)
1007    o add new flags:
1008     - T,S forcing inside/outside Adams-Bashforth
1009     - turn off temp,salt advection and/or forcing
1010     - for each tracer, define internal flag for multiDimAdvection & A-B
1011    o monitor: change definition of KE to check conservation of Energy
1012    
1013    checkpoint45c_post
1014    o Removed f90 comments ("!")
1015    o Modified initialisations to enable exf package for MITgcm
1016      (without invoking ECCO_PACKAGE).
1017    o modifications to gradient check package (Martin Losch)
1018      - enable centered differences
1019      - modified format of standard output
1020    
1021    checkpoint45b_post
1022    o cleaned exchange calls in cg2d
1023    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
1024    o included CPP option SINGLE_LAYER_MODE in thermodynamics
1025      to configure barotropic setup (Martin Losch)
1026    o moved some initialisations within bi,bj loop in dynamics
1027      (TAF flow dependency)
1028    o in initialise_varia, moved call packages_init_variables
1029      before convective_adjustment_init
1030      (corresponding adjustment of TAF tape initialisation).
1031    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
1032    
1033    checkpoint45a_post
1034    o compute Rho over the whole domain (extend iMin,jMin indices)
1035    o specific exchange for X-slice domain (case Ny=1)
1036    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1037    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1038    
1039    checkpoint44h_post = checkpoint45
1040    o Fix to restore differentiability:
1041      place at which packages_init_variables is called in
1042      initialise_varia is crucial for reverse control flow.
1043    o modifications in GMRedi to enable stable adjoint
1044      (corresponding modif's in thermodynamics, dynamics)
1045    o added missing hook for sponge layer code in external_forcing
1046    o modified test cost functions
1047    o storing in gad_advection (plus removal of write(0,*)!
1048    o missing headers TR1.h added in convective_adjustment routines
1049    o errorMessageUnit set non-equal zero in eeboot
1050      (conflict on some platforms, e.g. IBM SP3)
1051    o modified carbon verif.
1052    
1053    checkpoint44h_pre
1054    o vertical grid option: allow to put the Interface at the middle between
1055      2 cell-centers ; replace delZ in pkg/kpp by drF.
1056    o GM Advective form: Tracers are advected using the residual transport (=
1057      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1058    
1059    checkpoint44g_post
1060    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1061      results) ; ifdef missing in thermodynamics.F
1062    
1063    checkpoint44f_pre,checkpoint44f_post
1064    o added PTRACERS package
1065      This allows an arbitrary number of passive tracers to be integrated
1066      forward simultaneously with the dynamicaly model.
1067      + Implemented so far:
1068        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1069        - I/O and checkpointing
1070        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1071      + Not implemented so far:
1072        - KPP
1073        - OBCS
1074      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1075        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1076        line in data.pkg.
1077      + This package is disabled by default since it increases storage.
1078    
1079    
1080    o testscript: added -cleanup option
1081    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1082                 b) enable to filter 2D fields.
1083    
1084    checkpoint44e_pre,post
1085    o re-wrote convective adjustment to use pre-calculated weights
1086      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1087      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1088      Original calls to convect() still in place.
1089    
1090    chkpt44d_pre,post
1091    o added missing EXCLUDE_MONITOR flags
1092    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1093      (incompatible typ in MIN/MAX expressions caused problems
1094      on IBM SP3)
1095    o in genmake added variable MAKEDEPEND
1096      plus resetting for case SunOS
1097    o added timer_stats.c routine for IBM SP3
1098    o removed variables in dynamics
1099    !!! I forgot to create tag chkpt44d_pre !!!
1100    !!! But chkpt44d_pre = chkpt44c_post    !!!
1101    
1102    o real fresh water flux implemented with non-linear free-surface.
1103    
1104    chkpt44c_pre,post
1105    o few fix (mask in shap_s2, EmPmR in external_field_load,
1106      USE_NATURAL_BCS in solve_for_P);
1107    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1108    
1109    checkpoint44b_pre/_post
1110    o merge of relevant stuff from the ecco-branch:
1111      - genmake: removed $S64 overwrite for case SunOS
1112      - pkg/exf: update and corrections for field swapping and obcs
1113      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1114                  harmonized between ECCO and MITgcm
1115      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1116                      updated checkpointing_lev... lists for obcs
1117      - model/src: minor changes in forward_step, plot_field
1118                   added directive for divided adjoint in the_main_loop
1119      - pkg/mdsio: added mdsio_gl_slice
1120    
1121    o check parameters & config (chkpt44a_pre,post)
1122    o OBC and NonLin_FrSurf.
1123    
1124    checkpoint44
1125    o fix bug in mom_vi_del2uv
1126    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1127    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1128    o update AIM experiments (NCEP input files)
1129    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1130    o added some stuff for AD
1131    
1132    checkpoint43
1133    o added two new advection tests
1134    o added global 4x4 degree ocean test
1135    o added test of H&S94 with free surface on cube
1136    o some final mods for gradient check, adjoint,...
1137    
1138    checkpoint42
1139      Fixed AD-related problems:
1140    o Store directives up-to-date with re-arranged Adams-Bashforth
1141      (mainly thermodynamics.F)
1142    o New store directives for multi-dim. advection schemes
1143      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1144      * new common block and key passkey
1145      (mainly gad_advection.F)
1146    o Modified store directives for split of dynamics/thermodynamics
1147      for the case ALLOW_KPP
1148    o Cleaned argument list for timestep_tracer.F
1149    
1150    checkpoint41
1151    o re-formatted/added comments in prologues of key subroutines
1152      to work with protex
1153    
1154    checkpoint40
1155    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1156    o added FLT (floats) package from Arne along with demo. experiment
1157    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1158      implementation of forward-in-time forcing terms
1159    o more mods for non-linear free-surface including new variable
1160    o modified multi-dim method to work on cube
1161    o bug fix in KPP (from DM)
1162    
1163    checkpoint40pre9
1164    o added DST advection schemes
1165    o fix MPI bug on SGI's
1166    o modifications for non-linear free-surface
1167    o fixed conditionals for fixed flow/passive tracer only mode
1168    o added tension/strain form of stress tensor
1169    o changes to commenting of arguments for TAF/TAMC
1170    o added/updated many matlab scripts
1171    o added multi-dimensional advection method for tracers
1172      
1173    checkpoint40pre8
1174    o new package rw/
1175      Added method for dumping intermediate local arrays:
1176      mdsio_writetile - same as mdsio_writefield except works from inside
1177                        bi,bj loop
1178      mdsio_writelocal - same as mdsio_writetile except works for local
1179                         arrays
1180      write_local_r? - higher-level wrapper for mdsio_writelocal
1181      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1182      Example given at end of mom_vecinv.F that dumps some local arrays.
1183    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1184      control flux-form versus vector invariant code.
1185      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1186      or genmake -DISABLE ...
1187    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1188      (additional storing is now needed for case vecinv;
1189      currently nothing implemented to switch this storing off
1190      in case fluxform is used since no CPP flag available).
1191    
1192    checkpoint40pre7
1193    o bug fix in dynamics.F
1194      calc_viscosity called before k=1,Nr loop.
1195    o added some #ifdef's ALLOW_PASSIVE_TRACER
1196    o cleaned initialisations in ctrl_map_ini
1197      related to TAF
1198    
1199    checkpoint40pre6
1200    o split dynamics into thermodynamics & dynamics
1201    o corresponding split of calc_diffusivity into
1202      calc_diffusivity, calc_viscosity
1203      (kpp_calc_diff, kpp_calc_visc).
1204    o Added diffkr, kapgm to control variables
1205    o bug fix in gmredi_slope_limit for ldd97
1206    
1207    checkpoint40pre5
1208    o proper initialization of Adams-Bashforth time stepping
1209      + uses forward step for very first step of model (iter=0)
1210    o re-generated *all* output since almost all output is modified by this
1211      change (sorry but we've been putting this one off for about 2 years)
1212      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1213        *not* regenerated since they are already out of date and I don't
1214        want to create the impression that they are suddenly working.
1215    o removed KAP stuff for DEC's
1216    o modified/added many .cvsignore files in */code and */input
1217    o added new expt "solid-body.cs-32x32x1"
1218      + this uses an alternative form of ini_curvilinear_grid.F which
1219        is not necessarily any better than the current one...
1220    
1221    checkpoint40pre4
1222    o added re-initialisations of utrans,vtrans,rtrans in
1223      calc_common_factors which are crucial for TAF.
1224    o extended iMin,jMin range for calc_common_factors,
1225      calc_diffusivity
1226    o added option ALLOW_PASSIVE_TRACER
1227    o a few minor updates and fixes
1228    
1229    checkpoint40pre3
1230    o created calc_gtr1.F for gad package
1231    o split the_main_loop and re-introduced forward_step
1232    o some recomputations of nIter0 for TAMC
1233    
1234    checkpoint40pre2
1235    o Updated to latest branch of AJA, JMC
1236    o Added gradient check package
1237    o Added routines for passive tracer handling
1238    o Added carbon sequestration sensitivity experiment
1239    
1240    checkpoint39
1241     o Modifications and fixes to support TAMC
1242       (mainly missing or wrong directives)
1243     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1244       in addummy_in_stepping
1245     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1246     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1247     o Included following packages:
1248       cal: calendar
1249       exf: external forcing
1250       ecco: essential routines to control use of cal, exf
1251             (NB: this is not the full ECCO environment)
1252     o disabled some packages by default in genmake
1253    
1254    checkpoint38
1255     o see notes_c37_adj.txt
1256     o corrected wrong layer index in external_forcing_t
1257     o replaced the_main_loop/forward_step by the_main_loop
1258     o removed forceoutput from write_state
1259       (replaced criteria for initial/final state)
1260     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1261    
1262    checkpoint37
1263     o mdsio.F routine split and packaged in pkg/mdsio
1264       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1265        used unless genmake -disable=mdsio)
1266     o allow a more precise surface-geopotential gradient for the atmosphere
1267       taking into account the change in space of Alpha (=1/rho) at the surface.
1268     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1269       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1270     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1271       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1272       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1273     o Time-Average diagnostics defined as a pseudo package "timeave".
1274     o pickup files : old pickup (before c35) did not work with new code (c35
1275       and after) unless activating 2 commented lines in initialise-varia.
1276     o Non-Hydrostatic pickup file Pb fixed.
1277     o bug with Rigid-lid version (since c35) fixed.  
1278    
1279    checkpoint36
1280     o implement Crank-Nickelson barotropic time-stepping
1281     o recover Time-Average diagnostics
1282     o fix Pb in checkpoint (PR#19)
1283     o AIM become a standard package ; clean unused CPP_kees
1284    
1285    checkpoint35
1286     o subtantial rewrite of dynamics.f
1287     o allows staggered time-stepping
1288     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1289     o added bottom drag (linear + quadratic)
1290    
1291    checkpoint34
1292     o Modified exchange routines for correct reverse simulation.
1293     o Added verification output to comply with bug fix in impldiff.F
1294       as of c33 (exp2, natl_box).
1295     o Corrected store directives in dynamics.F
1296     o Corrected array boundaries in impldiff.F
1297     o Corrected array dimensions in gmredi.
1298       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1299     o Added routine GLOBAL_SUM_INT to global_sum.F
1300     o Added mdsio_gl.F for ECCO purposes.
1301    
1302    checkpoint33
1303     o Fixed bug in lower BC in impldiff.F
1304     o Fixed confusion about units of forcing arrays in FFIELDS.h
1305       namely Fu,Fv,Qnet,Qsw,EmPmR:
1306       - Removed verification/natl_box/code/external_fields_scale.F
1307         (did not differ from that in model/src)
1308       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1309         (see FFIELDS.h for description)
1310       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1311         kpp_calc.F and kpp_transport_t.F
1312       - Removed model/src/external_fields_scale.F and calls to it
1313       - verification/natl_box uses flux data with "atmospheric" sign so
1314         a special version of external_fields_load.F is used to
1315         change the data as it's read in. This way, the arrays
1316         have the right units and signs at all times tha a user could
1317         possibly use them.
1318     o Corrected genmake to delete a temporary file during configuration
1319    
1320    checkpoint32
1321     o Scaling of forcing fields moved from external_forcing.F to
1322       external_fields_scale.F, called directly after loading fields.
1323     o Surface relaxation terms added to surface tendency fields in
1324       extra subroutine.
1325     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1326       fields.
1327     o Changes in GMRedi to comply with packaging structure.
1328     o Modifications and bug fixes in KPP package.
1329     o Verification experiment for KPP added (verification/nat_box/)
1330    
1331    checkpoint31
1332     o Packages interface brought in line with defined standard
1333       -> new routines packages_...F
1334       -> changes in initialise_fixed.F, initialise_varia.F
1335       -> enables initialisation interface for ECCO package
1336     o Rescaling of external forcing fields immediately after read
1337       (removed from external_forcing.F)
1338       -> new: surface_fields_scale.F
1339       -> affects ini_foorcing.F, external_fields_load.F
1340     o Computation of surface tendencies before tendency updates.
1341       -> new: external_forcing_surf.F
1342     o Change of variable names useGMRedi, useKPP, useECCO
1343     o Further changes in dynamics.F, impldiff.F for TAMC
1344     o Tested for experiments 0, 2, 4.
1345       - not yet tested for GMRedi.
1346       - not yet tested for KPP.
1347    
1348    checkpoint30
1349     o Updates for OBCs
1350     o New experiment for test OBCs (internal_wave)
1351     o New output.txt in verification/exp4/results/
1352     o Updates for KPP: calculation of viscosity corrected, new variables
1353       kpp_dumpFreq and kpp_taveFreq
1354     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1355       and entry for T90 in genmake
1356    
1357    checkpoint29
1358     o packaged KPP and GM/Redi
1359    
1360    checkpoint28
1361     o Corrected initialization of hFacMin for difference vertical coordinates
1362     o Modified calculation of partial cell thickness to more robust algorithm
1363     o config_summary.F: replaced write_1D_... by write_0D_...
1364       read_write.F: added subroutines write_0D_...
1365     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1366       included some initialisations required for TAMC.
1367     o routine calc_isoslopes: modified sqrt computation to make it
1368       differentiable for zero argument.
1369     o routines dynamics, impldiff:
1370       included store directives and tape key computations required for TAMC.
1371     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1372    
1373    checkpoint27
1374     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1375       formulation works properly with variable resolution.
1376     o restructured the calling tree between the_model_main() and dynamics()
1377     o split initialise() into initialise_fixed() and initialise_varia()
1378     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1379       in new routine ini_psurf()
1380    
1381    checkpoint26
1382     o moved some #ifdef in optional routines to encompass everything
1383       except the argument declarations. This was using up some memory.
1384     o fixed macros like _ADT to work with both versions of Linux cpp
1385     o cleaned up some unused and uninitialized variables
1386       (helps when debugging with strict compile options)
1387     o split up CPP_EEOPTIONS.h into options and macros
1388       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1389     o patch for 2 processor JAM mode
1390    
1391    checkpoint25
1392     o updates for OBCs and NH
1393     o dramatically reduced memory usage
1394     o added "JAM" routines for use on Artic network
1395     o parameterization of convection by implicit vertical diffusion
1396     o added a diagnostic of convective index
1397     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1398       (this is was partly for OBCs and NH but also in anticipation of
1399        an explicit free-surface option)
1400     o initial state input files for U and V
1401    
1402    checkpoint24
1403     o Removed some spurious "REAL"s
1404     o Updated KPP to latest version from JPL
1405     o Added a COS(latitude) in horizontal viscosity
1406    
1407    checkpoint23
1408     o Added del^4 diffusion for salt and temperature
1409     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1410    
1411    checkpoint22
1412     o Made many small changes: implicit none, format(i5), etc...
1413     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1414    
1415    checkpoint21
1416     o Introduced new I/O package that supports direct-access records (mdsio.F)
1417     o Split-up mid-level I/O routines
1418     o Updated input data for experiments 0,1,2,4 and 5
1419     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1420    
1421    checkpoint20
1422     o Tidied up open-boundaries some more
1423     o Added non-hydrostatic code
1424     o Fixed some input data
1425     o Modified MPI start-up to work in "coupled" context.
1426    
1427    checkpoint19
1428     o Tidied up directory structure for verification experiments.
1429     o Added new code for open boundaries.
1430     o Corrected advective terms near boundaries.
1431     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1432     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1433     o Split default parameters out of ini_parms.F into set_defaults.F.
1434    
1435    checkpoint18
1436     o Further changes for optional code generation with
1437       CPP - ugh!
1438    
1439    checkpoint17
1440     o Beginning to incorporating modularity
1441       for supporting atmos. and ocean configs.
1442     o Small changes for TAMC complinace
1443     o New ultra simple test case. Barotropic box
1444       configuration "exp0".
1445    
1446    checkpoint16
1447     o Minor changes to exchange routines to support
1448       accumulation in reverse mode. Adjoint of an
1449       assignment is an addition.
1450     o Changes to support compilation by TAMC (LR(1)
1451       syntax) and by g77 under Linux ( 72 character
1452       limit ).
1453    
1454    checkpoint15
1455     Rewrote exchange routines to allow
1456     o General tile <-> tile connectivity.
1457     o TAMC reverse mode flag ( is this really needed? )
1458     o Variable width overlap and exchange region widths.
1459     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1460       shmput/shmget, VIA, SYSV shmem and every other cool
1461       communication method.
1462    
1463    checkpoint14
1464     Consistent isomorphism chages made. These allow dynamical core
1465     to support both pressure and meters as a vertical coordinate.
1466    
1467    checkpoint13
1468     Release which corrects global_max problem and a couple
1469     of KGM time-averaging diagnostic errors. Also contains
1470     a double-gyre experiment setup as well as the baseline
1471     4 degree global template. The double gyre template is
1472     organised to allow it to be applied automatically to
1473     the baseline configuration.
1474    
1475    branch-point-rdot
1476     A few tidy-ups have been made bt the real point of this
1477     check-point (excuse the pun) is to allow a branch to be
1478     made for the purposes of adding the rDot alterations.
1479     I don't want to commit the rDot to the main-trunk until
1480     we've actually tested it...
1481    
1482    checkpoint12
1483     Tidy up and added generic genmake script (formerly
1484     configure script).
1485     Released to testers.
1486    
1487    checkpoint11
1488     Re-arranged initialise() and introduced ini_vertical_grid()
1489     and ini_masks_etc().
1490    
1491    checkpoint10
1492     Introduced the configure script.
1493     Separated out the diags package.
1494     Added template for writing time-averages of tile/intermediate quantities.
1495     Updated SIZE.h in exp2 and made the data big-endian.
1496    
1497  checkpoint9  checkpoint9
1498   MPI fix. Filename changes (meta/data). salbin*y stuff.   MPI fix. Filename changes (meta/data). salbin*y stuff.
1499   General tidy-up.   General tidy-up.

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