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revision 1.9 by adcroft, Thu Jul 2 14:20:04 1998 UTC revision 1.218 by jmc, Sat Dec 6 00:35:13 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 surface flux time-av diagnostic modified for NLFS & RealFreshWater
7    o add call to AIM pendant S/R in external_forcing & external_fields_load.F
8    
9    checkpoint52c_post
10    o Fixing OPTIONS files for use of exf:
11      - ALLOW_ECCO not needed
12      - ECCO_CPPOPTIONS.h should not be included from
13        EXF_OPTIONS.h/CAL_OPTIONS.h, but from CPP_OPTIONS.h
14        as has been the case in the past
15      - All cal/exf related options are currently set in
16        single header file. Should remain so until we
17        agree on a consistent new policy.
18    o Removed all CPP options for cal package.
19      cal has no more CPP options.
20    o modified STOREs in GAD_ADVECTION
21    o corrected key comp. for passkey
22    
23    checkpoint52b_post
24    o new version: "thsice" of thermodynamic sea-ice pkg:
25     - only 1 call from "forward_step"; conserve energy, fresh-water & salt.
26     - modify fluxes but do not change theta directly;
27     - light cleaning of bulk_force pkg (still needed with thsice).
28     - add forcing fields + data files in global_ocean.cs32x15/inp_thsice
29       + output_thsice.txt to test thsice & bulk_force pkgs.
30    o put back grid & coriolis monitor output.
31    checkpoint52b_pre
32    
33    o call "do_the_model_io" at the beginning (=> dump initial state)
34    o use rhoConstFresh to define convertEmP2rUnit (was done only in ocean-P)
35    o sort out interplay between tamc.h and PTRACERS_OPTIONS.h
36      (need info on NUMBER_OF_PTRACERS)
37    o missing PTRACERS headers in some routines
38    o default tamc.h in pkg/autodiff supposed to crash
39      to ensure proper customization
40    
41    checkpoint52a_post
42    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
43      - moved surfaceTendencyTice from pkg/seaice to main code
44      - subroutine FREEZE_SURFACE now limits only surface temperature
45        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
46        => new output.txt for global_ocean.cs32x15 & global_with_exf
47      - keep the old version of FREEZE for backward compatibility;
48        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
49      - corresponding modifs for TAF directives
50    o added surface flux output variables to TIMEAVE_STATVARS
51    o time-averaged output for pkg/ptracers
52    o fix problem with ECCO-related divided adjoint
53      snapshot file was missing some ad-variables,
54      but no warning issued by TAF
55    
56    checkpoint52a_pre
57    o some bug fixes for #undef REAL4_IS_SLOW
58    
59    checkpoint52 = ecco_c52_e35
60    o after testing adjoints of checkpoint51u_post
61    
62    checkpoint51u_post
63    o this is the post-merge tag of the ecco-branch
64      (needs another clean checkout and re-testing)
65    o various natl_box_adjoint configs and results
66      but no input fields
67    o obcs adjoint not yet merged!
68    o adding ECCO global 1x1 and 2x2 degree configs
69    o updated/extended some store directives for seaice
70    o pkg/ecco now containes ecco-specific part of cost function
71    o top level routines the_main_loop, forward_step
72      supersede those in model/src/
73      previous input data.cost now in data.ecco
74      (new namelist ecco_cost_nml)
75    o in ctrl/ cleaned some cross-dependencies and updated CPP options
76    
77    checkpoint51t_post
78    o this is the pre-merge tag of the ecco-branch
79    
80    checkpoint51s_post
81    o cleanup: removed various obsolete #define-s
82    o pkg/grdchk
83      - renamed 'ph-grd 3' to 'grad-res'
84      - merged from ecco-branch
85        (remaining bug fixes for obcs gradient checks)
86      - additional high-precision output for testreport
87        (grep for 'precision_grdchk_result')
88    
89    checkpoint51r_post
90    o cleaned up or removed CPP_OPTIONS.h files
91    o updated results for some of the tests to reflect the new
92      optfiles (-ieee: -O0 instead of -O3)
93    
94    checkpoint51q_post
95    o cd_code:
96      - moved cd_scheme.F -> cd_code_scheme.F
97      - separate read_checkpoint from cd_code_ini_vars.F
98      - separated cd_code part from write_checkpoint
99      - updated AD_SOURCE, generated .flow
100      - added CD_CODE_VARS.h to the_main_loop
101      - Moving cd_code specific store dir.s to pkg/cd_code
102    o ctrl package totally restructured
103      - pack/unpack now optional and decoupled from
104        xx_/adxx_ I/O
105      - ctrl_pack/unpack cleaned
106        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
107      - confined inclusion of AD_CONFIG.h to where necessary.
108    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
109    
110    checkpoint51p_post
111    o create initial cd_code package
112      - WARNING: the initialization of fields within packages
113        is broken because INI_FIELDS (where READ_CHECKPOINT is
114        called) is called *before* PACKAGES_INIT_VARIABLES.
115        This seems to be backwards since
116        1) its important to initially zero the entire field including
117           the "halo" region
118        2) zeroing needs to be done *before* reading pickup info
119           and the pickup call might or might not happen in any
120           particular run
121      - this needs an overhaul for R2
122    o cleanup verification/*/code/GMREDI_OPTIONS.h
123    o cleanup testreport
124    
125    checkpoint51o_post
126    o bringing AD-related verif's up to date with genmake2
127      - carbon/
128      - global_ocean.90x40x15/
129      - hs.94.1x64x5/
130      - (front_relax/ )
131    o (more) consistent directory structure for AD-related verif.'s
132    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
133    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
134    o bug fix in find_alpha.F for MDJWF:
135      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
136        change rho -> rho-rhoConst
137      - replace call find_rho to find_rhonum
138    o initialisation of rFlx extended to full array (required by TAF)
139      and shifted to thermodynamics
140    o removed PTRACERS.h in ptracers routine
141    o added surfacetendencyPtr to S/R parameter list pracers_forcing
142    o Correcting initialisations for fVerU, fVerV.
143    o helping TAF to recognize dependency on kUp for
144      fVerU, fVerV
145    o Replacing delZ by delR in pkg/ctrl/
146    checkpoint51o_pre
147    
148    o undid all of cp51 pending some cleanups and discussion
149    o added the [#include "AD_CONFIG.h"] statement to all files that need
150       it for adjoint/tl #defines
151     o re-worked the build logic in genmake2 to support AD_CONFIG.h
152     o removed tools/genmake since it no longer works
153    
154    checkpoint51n_post
155    o modifications to make FREEZE flux visible to pkg/kpp
156      - moved surfaceTendencyTice from pkg/seaice to main code
157      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
158      - subroutine FREEZE now limits only surface temperature
159        (this means new output.txt for global_ocean.90x40x15,
160         global_ocean.cs32x15, and global_with_exf)
161    o added surface flux output variables to TIMEAVE_STATVARS
162    
163    checkpoint51n_pre
164    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
165    o added [#include "AD_CONFIG.h"] to all files that use the following
166      defines:
167      - ALLOW_ADJOINT_RUN
168      - ALLOW_TANGENTLINEAR_RUN
169      - ALLOW_ECCO_OPTIMIZATION
170    
171    checkpoint51m_post
172    o incorporating changes to get TAMC/TAF working in genmake2
173      - added new TAMC/TAF targets to the Makefile
174      - various cleanups related to package handling
175      - these changes should have no impact on the forward model
176    
177    checkpoint51l_post
178    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
179     - faster algorithm for cal_addtime.F
180     - higher precision arithmetic, where needed
181     - pkg/exf *startdate variables changed from calendar date to
182       model integration time
183    
184    checkpoint51l_pre
185    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
186    o enable to apply restoring on S & T only in a latitude band.
187    o update output (external_forcing_surf modif. change truncation errors)
188       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
189    
190    checkpoint51k_post
191    o change default to: useNHMTerms=.FALSE.
192     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
193       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
194     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
195        exp1, ideal_2D_oce
196     - change data file of oceanic exp (leave the results unchanged for now)
197       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
198    o set gravitySign automatically according to the vertical coordinate used
199      (and change sign: back to "logical" value: +1 when R increases downward)
200    o added an include barrier to the default CPP_OPTIONS.h and
201      removed the #include "PACKAGES_CONFIG.h" from it
202    o fix a bug in mom_fluxform (from chk51j_post)
203    
204    checkpoint51j_post
205    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
206    o adjusted some flow directives (dynamics, thermodynamics)
207    o added cubed-sphere case to test cost function
208    o heckpoint_lev?_directives.h now include
209      pkg-specific directives, whenever those are enabled.
210    o Moving pkg-specific flow directives to corresponding pkg
211      Moving pkg-specific differentiation list to corresponding pkg
212      Moving pkg-specific checkpoint-lev storing to corresponding pkg
213      ---> conventions are
214           - pkg_ad.flow
215           - pkg_ad_diff.list
216           - pkg_ad_check_lev?_dir.h
217    
218    checkpoint51i_post
219    o merge of the branch-genmake2
220      - knowingly breaks the older genmake
221      - automatic generation of all ALLOW_${PKG_NAME} defines
222      - new testreport supersedes older testscript
223    o large number of package inclusion and header cleanups
224    checkpoint51i_pre
225    
226    o new output for adjoin of global ocean vector invariant
227    o fix for checkpoint of thermodynamic seaice and bulk_force
228    o Steph gchem various cleanups
229    
230    checkpoint 51h_pre
231    o fixed some single quotes
232    o modify gchem pkg to be more versatile
233    o modifications to clean up dic pkg
234    o add pkg/cfc
235    
236    checkpoint51g_post
237    o provide links for ARPACK and ADM*TLM
238    o start removing verification/vero/
239    o update AD-related stuff
240      (in particular some IF-statements in model/src/ routines)
241    o adding to verification/global_ocean.90x40x15/ adjoint of
242      vector invariant setup
243    
244    checkpoint51f_post
245    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
246    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
247      of tracer Green's fucntions for ocean inversion project.
248    
249    checkpoint51f_pre
250    o Added on-the-fly spatial interpolation capability
251        "USE_EXF_INTERPOLATION" to pkg/exf.
252      - This is a temporary Cartesian-grid hack until
253        the super-duper ESMF coupler becomes available.
254      - See verification/global_with_exf/README for usage example.
255      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
256        flags and modified pkg/seaice accordingly.
257    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
258        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
259        non-local transport term.
260    
261    checkpoint51e_post
262    o pkg/mom_vecinv:
263      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
264      - add time-ave diagnostic of vorticity advection.
265    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
266    o atmospheric geopotential: - include water vapor effect;
267                                - use p^kappa in p* scaling.
268    o land pkg: read initial state from files.
269    o AIM : add stratospheric drag in the upper level
270    
271    checkpoint51d_post
272    o change function ILNBLNK (=> last non-blank char.) to return zero
273      (instead of the string length) when the string. char is empty
274    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
275    o modif's to restore TAMC compatibility
276      - avoid "_d" constructs in PARAMETER declarations
277      - avoid interrupting lines by comment lines
278    o Use cluster local disks for purely local I/O
279      vs. globally visible disks needed for ctrl stuff
280      (merged from ecco-branch)
281      - new active_file_loc... and mdsio_..._loc routines
282      - affected packages: autodiff, ctrl, grdchk, mdsio
283    
284    checkpoint51c_post
285    o introducing integer flag debugLevel
286      - debLevZero: suppress all output
287      - debLevA: standard
288      - debLevB: equivalent to current debugMode=.TRUE.
289    o introducing pathname variable mdsioLocalDir for mdsio
290      that can be specified at runtime
291      (relevant for cluster I/O to local disk)
292    `
293    >>>checkpoint51b_post
294    adjoint of ptracers
295    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
296    o extended state in checkpoint_lev?, etc.
297    o alternative ctrl/cost with tr1 or ptracer
298    o new comlev1_bibj_ptracers
299    o new ptracers.flow
300    o made ptracers_forcing same as external_forcing_s
301    o added verification for adjoint with ptracers
302      - adm. grdchk fail so far
303      - tlm. grdchk OK
304      - checked tapelev/comlev recomputations: OK
305    <<<checkpoint51b_pre
306    
307    checkpoint51a_post
308    o added code for biogeochemistry package
309      - new pkgs: dic, gchem
310      - new subroutine in ptracers
311    o modify code for biogeo packages
312      - in model/src and pkg/ptracers
313    
314    checkpoint51
315    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
316      - autodiff, ctrl, exf, grdchk, seaice
317      kept separate packages
318      - cost, ecco, obcs
319    o updating verification/internal_wave, verification/lab_sea
320      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
321    
322    checkpoint50i_post
323    o Preparing next differentiable checkpoint and sync
324      of MAIN vs. ecco-branch
325      - 1st step: this one is differentiable
326      - 2nd step: next(! not this) checkpoint will have updated packages
327                  from ecco-branch)
328    
329    checkpoint50h_post
330    o new package "land": provide surface BC for AIM.
331    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
332    o AIM: use true log-P extrapolation for near surface temp (= as in
333        F.Molteni paper) ; update aim.5l_cs output.
334    o New variable in PARM03 for more flexible pickups
335    o somewhat cleaned package initialisation sequence for
336      ctrl/ cost/ ecco/ in packages_... routines
337    
338    checkpoint50g_post
339    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
340      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
341      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
342        made the default because of faster convergence than ADI
343    
344    checkpoint50f_post
345    o exf totally restructured
346      - replaced all exf_set_ routines by one generic exf_set_gen.F
347        and made sure it's still differentiable
348      - split exf_getffields.F into new exf_bulkformulae.F
349      - exf_inscal_/exf_outscal_ suffixes consistent with field names
350      - updated adjoint/makefile and relevant verif. accordingly
351    
352    checkpoint50f_pre
353     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
354          + change Evap over land. (update aim.5l_cs output)
355     o added missing .cvsignores and made uniform across expts
356     o changed configuration of tidal_basin_2d expt
357     o added pkg/debug functions for tracing code in fatal crashes
358     o tidied pkg/monitor to use MONITOR_OPTIONS.h
359     o new fn in pkg/monitor to stop model if solution grows too big
360     o removed lots of single quotes from comments
361    
362    checkpoint50e_post
363    o make KPP work with PTRACERS
364     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
365       nearly a copy of kpp_transport_s
366     - there is no analogue to SurfaceTendencyS, so I have to use
367       gPtr(of the surface layer) instead
368    o add a new platform SunFire+mpi (SunFire 15000) to genmake
369    checkpoint50e_pre
370    
371    checkpoint50d_post
372    o change kpp output from multiple-record state files to single-record state
373      files analogous to write_state.F
374    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
375      analogous to the cg2d-related output.
376    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
377      so that writing to internal file fn (with length 512) fails.
378    checkpoint50d_pre
379    
380    checkpoint50c_post
381    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
382    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
383    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
384    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
385    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
386    
387    checkpoint50c_pre
388    Merging from release1_p13:
389    o bug fix for pkg/seaice dynamic solver
390    o Added SEAICE_initialHEFF to pkg/seaice
391    
392    checkpoint50b_post
393    o store u*,v* in gU,V instead of in guNm1,gvNm1
394    o in order to put the momForcing out of the Adams-Bashforth:
395      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
396      to timestep.F
397    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
398    o re-generate output for highly sensitive test-exp:
399       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
400    
401    checkpoint50b_pre
402    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
403    o corrected CPP option mismatch in exf_Bulk... functions for case
404      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
405    
406    checkpoint50a_post
407    o Bug fix for merging between c50 and KPP.
408      ikey was passed from thermodynamics to kpp_calc via
409      common block rather than being recomputed in kpp_calc,
410      in contradiction with new key itdkey.
411      New key ikppkey created, and tamc.h headers updated.
412    
413    checkpoint50
414    - 2nd step of merge with ecco-branch:
415      merge changes in ecco-branch back into main trunk
416    - bug fix in find_alpha
417    - more storing in gmredi_calc_tensor.F, kpp_routines.F
418    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
419    - merged some sliced AD support routines
420    
421    checkpoint49
422    merged from ecco-branch:
423    o exf:
424      - Enable initialisation of forcing fields to constant
425        (runtime) values.
426      - in exf_getffields.F
427        Reduce i-/j-loop to interior domain, discarding overlaps.
428        That also fixes wrong TAF-key computations for key_1, key_2
429        with bulf formulae.
430      - exf_init.F modify #ifdef for exf_init_evap
431      - exf_getffieldrec.F, ctrl_getrec.F
432        The following INT-usages are not safe:
433          fldsecs  = int(fldsecs/fldperiod)*fldperiod
434          fldcount = int(fldsecs/fldperiod) + 1
435        and were modified.
436    o autodiff: checkpoint_lev...
437      - updated storing for bulk formulae (some arrays were missing)
438      - added state for seaice package
439      - synchronized with main branch
440    o DIVA:
441      Modif.s in
442      - the_main_loop.F
443      - the_model_main.F
444      and added cost_final_restore.F cost_final_store.F
445      o With these changes, it is possible to fully separate
446        the first forward run to compute the cost function (mdthe_main_loop)
447        and adjoint runs over individual DIVA intervals (adthe_main_loop)
448        into separate model executions.
449        This enables better tuning of DIVA to given queue sizes.
450      o Loss of cost function value in consecutive DIVA runs is
451        fixed by storing to 'costfinal' file.
452      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
453        beginning/end of adjoint integration is accounted for.
454      The current changes apply to TAF-1.4.26.
455      TAF has one remaining bug, requiring one manual change
456      (see MITgcm manual).
457    o cal: synchronized between MAIN and ecco-branch
458    
459    checkpoint48i_post
460    o Changes to restore differentiability of code w.r.t. previous tag
461      (mostly adding new routines to make list and replacing
462      pressure by totPhiHyd).
463    o Updated and merged grdchk package
464      - has both ADM and TLM checks
465      - works for single- and multi-proc.
466      - output cleaned
467      - worked successfully for parallel DIVA
468    o genmake:
469      - Adding -platform=SP4
470      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
471    o Modif. for DIVA:
472      ctrl_unpack should not be called in intermediate DIVA interval.
473      (similar thing would apply for active files such as
474      tbar, sbar, psbar, which should not be reinitialised;
475      only relevant for ecco-branch)
476    
477    checkpoint48h_post
478    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
479    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
480    o Added SEAICE_initialHEFF to pkg/seaice
481    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
482    
483    checkpoint48g_post
484    --- EOS:
485    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
486      store total Potential in totPhyHyd for diagnostics & EOS.
487    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
488    --- Pressure/geopotential gradient:
489    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
490    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
491      ( changes results of global_ocean_pressure )
492    o NLFS + z-coord.: add eta*Rho' contribution.
493    o accurate phiHyd when using interface-W at the middle between 2 centers
494     ( changes results of ideal_2D_oce )
495    o includes r* 2nd term in potential gradient.
496    
497    checkpoint48f_post
498    Merging from release1_p12:
499    o Modifications for using pkg/exf with pkg/seaice
500      - improved description of the various forcing configurations
501      - added basic radiation bulk formulae to pkg/exf
502      - units/sign fix for evap computation in exf_getffields.F
503      - updated verification/global_with_exf/results/output.txt
504    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
505      (SBO) core products, including oceanic mass, center-of-mass,
506      angular, and bottom pressure (see pkg/sbo/README.sbo).
507    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
508      to avoid negative values in shallow regions.
509      - updated verification/natl_box/results/output.txt
510      - updated verification/lab_sea/results/output.txt
511    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
512    o Added useSingleCpuIO option (see PARAMS.h).
513    o Updated useSingleCpuIO option in mdsio_writefield.F to
514      work with multi-field files, e.g., for single-file pickup.
515    o pkg/seaice:
516      - bug fix in growth.F: QNET for no shortwave case
517      - added HeffFile for specifying initial sea-ice thickness
518      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
519    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
520      kpp_transport_t.F, forward_step.F, and the_main_loop.F
521    o pkg/seaice:
522      - adjoint-friendly modifications
523      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
524    
525    checkpoint48e_post
526    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
527    o dynamics: change definition of computational domain & adapt mom_fluxform
528      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
529    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
530        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
531        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
532        global_ocean.90x40x15 global_with_exf global_ocean_pressure
533        inverted_barometer solid-body.cs-32x32x1
534      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
535    
536    checkpoint48d_post
537    o in preparation for r*:
538     a) use pre-computed gradient of hydrostatic potential:
539        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
540     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
541        => affects results of glob_oce_pressure (different truncation error)  
542      update output.txt of ideal_2D_oce & global_ocean_pressure
543    
544    checkpoint48d_pre
545    o in preparation for r*:
546      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
547      pass the 2 comp. of the grad. as arguments to momentum S/R.
548      but for the moment, only used if it does not change the results.
549    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
550    
551    checkpoint48c_post
552    Modifications in treatment of initial flux forcing controls
553    to avoid extra storing of flux fields.
554    
555    checkpoint48c_pre
556    o Added tidal_basin_2d experiment (currently 1D!)
557    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
558    
559    checkpoint48b_post
560    o r* coordinate added in #ifdef NONLIN_FRSURF block.
561     (modification to pressure gradient not yet implemented)
562    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
563      (for U & V) that are used for vertical advection of momentum.
564    
565    checkpoint48a_post
566    o In preparation for r*, use temp. array to compute vertical transport
567       in flux-form momentum pkg. => change results of few test-exp.
568      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
569                        lab_sea, natl_box & plume_on_slope
570    
571    checkpoint48
572    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
573    
574    checkpoint47j_post
575    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
576    o moved adexch from forward_step to addummy_in_stepping
577    o added exch in ctrl_map_...
578    o aveFreq.=0. at end of cost_final to avoid overwrite in
579      reverse checkpointing loop
580    o Yet more changes in gmredi:
581      * adgmredi_calc_tensor
582        avoiding all recomputation of gmredi_slope_limit
583      * adgmredi_x/y/rtransport
584        added flag for excessive storing to avoid recomp. of
585        u/v/rtans, dTdx/y/z
586        -> this is not really necessary and very memory-consuming
587      * adgmredi_slope_psi:
588        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
589      * gmredi_slope_limit
590        re-activated full calculation of taperfct for case 'ac02'
591    o updating verification/ adjoints of carbon, global_ocean.90x40x15
592    
593    checkpoint47i_post
594    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
595    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
596      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
597    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
598    o gmredi: fix few bugs.
599    
600    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
601    This will be a good checkpoint to plug into the ecco-branch.
602    o few modif.'s to get latest version adjointed
603      (mainly kick out code in ini_linear_phisurf)
604    o modif's to run adjoint with exactConserv
605    o case GM_BOLUS_ADVEC should be cleaned
606      S/R gmredi_slope_psi should be cleaned
607    o verification/carbon now has exactConserv=.TRUE.
608    
609    checkpoint47g_post
610    o time-average AIM output: becomes independent from statvars time-average
611      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
612    o After TAF bug fix:
613      Tested adjoint of gmredi package.
614      Tests were done with checkpoint47 rather than with latest
615      checkpoint47f_post since the latter is broken for the adjoint
616      verification/carbon/ contains both ADM and TLM gradient checks.
617    Here they are, before they get changed/lost/stolen.
618    Mostly modif.'s to fix numerical sensitivities.
619    Gradient checks OK for
620    - GM_taper_scheme:
621      * clipping
622      * ac02
623      * linear
624      * glw91
625      * dm95
626      * ldd97
627    - GMREDI_OPTIONS:
628      * GM_VISBECK_VARIABLE_K
629      * GM_NON_UNITY_DIAGONAL
630      * GM_EXTRA_DIAGONAL
631      * GM_BOLUS_ADVEC
632    in conjunction with data.gmredi parameters to be checked in
633    in a few minutes under verification/carbon/code/
634    
635    checkpoint47f_post
636    Merging from release1_p10:
637    o modifications for using pkg/exf with pkg/seaice
638      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
639        and SEAICE_EXTERNAL_FLUXES
640      - pkg/exf CPP options EXF_READ_EVAP and
641        EXF_NO_BULK_COMPUTATIONS
642      - usage examples are Experiments 8 and 9 in
643        verification/lab_sea/README
644      - verification/lab_sea default experiment now uses
645        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
646    
647    checkpoint47e_post
648    o created a tag prior to creating a branch
649    
650    checkpoint47d_post
651    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
652      at the bottom boundary had an erroneous half slip boundary condition
653    o added bottom drag and no slip boundary condition capabilities to
654      oceanic pressure coordinates code
655    o added new verification experiment global_ocean_pressure, this experiment is
656      also described in the tutorial section of the manual
657    checkpoint47d_pre
658    
659    checkpoint47c_post
660    o Added a verification experiment for a global cubed-sphere ocean run
661      -  verification/global_ocean.cubed32x32x30
662      -  uses pkg/therm_seaice and pkg/bulk_forcing
663    
664    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
665    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
666      when using P-coordinate; only implemented for atmospheric config.
667    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
668      NOTES: requires option NONLIN_FRSURF to be "#define".
669    o update advect_xz/results/output.txt (left from checkpoint44g_post)
670    
671    checkpoint47b_post
672    Merging from release1_p9:
673    o pkg/seaice
674      - removed GOTO's and added taf directives
675      - double precision constants to reduce the g77 (Linux)
676        to F77 (SGI) differences reported in release1_p8
677    o tools/genmake
678      - added SGI options
679    o verification/testscript
680      - updated to that of checkpoint47a_post
681    o verification/global_ocean.90x40x15/input/eedata
682      - modified for SGI f77 compatibility
683    o verification/lab_sea
684      - added description of sea-ice model
685      - added missing matlab routines
686      - added test of thermodynamics parallelization
687    
688    checkpoint47a_post
689    o new pkg: aim_v23
690     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
691       for now, keep the same surface forcing as before.
692     - Part-Cell implemented into AIM; check that Heat & Water are conserved
693     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
694     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
695    o add diagnostic of surface correction term in monitor output
696    
697    o bulk_force and therm_seaice
698    - Two packages:  bulk_force (Bulk forcing)
699      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
700    - Earlier integration from Stephaine Dutkiewicz
701      and Patrick Heimbach.
702    - Two ifdef statements for compile time,
703       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
704    
705    checkpoint47
706    differentiable version of checkpoint46n_post
707    o bug fix in quasihydrostaticterms
708    o * "clean" adjoint code (in terms of extensive recomputations)
709        can now be obtained for all GMREDI options (i.e. for
710        - GM_VISBECK_VARIABLE_K
711        - GM_NON_UNITY_DIAGONAL
712        - GM_EXTRA_DIAGONAL
713        - GM_BOLUS_ADVEC )
714      * However, wrong gradient check problem remains unsolved.
715      * New CPP options have been introduced for different
716        tapering schemes
717    o external_fields_load now part of differentiation list
718    o pressure needs multiple storing;
719      would be nice to have store_pressure at beginning or
720      end of forward_step, e.g. by having phiHyd global (5-dim.)
721      (NB: pressure is needed for certain cases in find_rho,
722      which is also invoked through convective_adjustment).
723    o recomputations in find_rho for cases
724     'JMD95'/'UNESCO' or 'MDJWF' are OK.
725    o #define ATMOSPHERIC_LOADING should be differentiable
726    o ini_forcing shifted to begining of initialise_varia
727    o Incorporating QNVS line search routines into MITgcm
728      (this is separate code, and therefore not under pkg)
729      lsopt/, optim/
730    o Updated verification/carbon/
731      - #define GM_VISBECK_VARIABLE_K
732      - GM_taper_scheme    = 'ldd97'    
733    
734    checkpoint46n_post
735    Merging from release1_p8:
736    o verification/natl_box:
737      updating new external_fields_load routine
738    o New package: pkg/seaice
739      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
740      The sea-ice code is based on Hibler (1979-1980).
741      Two sea-ice dynamic solvers, ADI and LSR, are included.
742      In addition to computing prognostic sea-ice variables and diagnosing
743      the forcing/external data fields that drive the ocean model,
744      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
745      The implied surface heat flux is then stored in variable
746      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
747      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
748      non-local transport term.  Because this call precedes model
749      thermodynamics, temperature under sea-ice may not be "exactly" at
750      the freezing point by the time theta is dumped or time-averaged.
751      N.B.: fairly large differences in accuracy occur across
752            different platforms/compilers; comparison between
753            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
754            generated output gives:
755       T           S           U           V
756      C D M    c        m  s        m  s        m  s        m  s
757      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
758      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
759      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
760    
761      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
762    o GAD:
763      - generated new common blocks to account for call of
764        same gad routines with differing traceridentities
765        (needed to modify tracerIdentity indices in GAD.h)
766      - generated separate common blocks for case useCubedSphereExchange
767        (Department of Futurology)
768      - parameter lists to gmredi_?transport: added tracerIdentity
769      - added new key indices to tamc.h
770    o external_fields_load:
771      - added this routine to TAF list
772      - needed to make some common blocks global and additional storing
773        along the same lines as exf package (checkpoint_lev?_directives.h)
774    o exf:
775      updated external forcing package
776      - bug fixes carried over from ecco-branch
777        (missing OBCS_OPTIONS.h in two routines)
778      - enable easy to use "no forcing".
779      - added exf I/O for atmospheric loading
780      - added exf I/O for runoff data
781      - transfered scaling between exf <-> MITgcm to exf namelist
782    o Adding new verification experiment global_with_exf.
783      This verification experiment is almost identical to the
784      global_ocean.90x40x15 experiment, except that it uses
785      the exf (and cal) package instead of the
786      external_fields_load routine (cf README file).
787    
788    checkpoint46m_post
789    o modified testscript to return -- when there are no lines of "%MON" output
790    o added new flag "quasiHydrostatic" for QH mode
791      and new routine quasihydrostaticterms()
792    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
793      New routine: mom_u_coriolis_nh()
794    o fixed sign of non-hydrostatic metric terms in u and v equations.
795      Depend on correct sign of gravitySign.
796    o added work.pc* to .cvsignore in aim directories using ifc
797    o introduced flag for controllin non-hydrostatic metric terms
798    o removed gravitySign from PARM04
799    o switched to g77/ifc from pgf77 in aim experiments
800    
801    checkpoint46l_post
802    o made convective adjustment work with pressure coordinates:
803     - changed the direction of k-loop in convective_adjustment.F for the
804       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
805     - adjusted the reference pressure k-index in convective_adjustment.F
806     - adjusted the convection condition in convect.F (in analogy to
807       calc_ivdc.F)
808     - convective_adjustment no longer computes anything on the halos
809     - removed the warnings about negative salinity from find_rho.F and
810       find_alpha.F; instead the new routine look_for_neg_salinity, called
811       at the beginning of find_rho, find_alpha, and find_beta, does a
812       check of the entire slice, if CPP-option
813       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
814    checkpoint46l_pre
815    
816    checkpoint46k_post
817    o fixed the verification/global_ocean.90x40x15 experiment:
818     - new bathymetry (the world according to A., JMC, and M.)
819     - new initial fields and forcing fields (*.bin files)
820     - new POLY3.COEFFS (for the next release one should switch to a full
821       equation of state: JMD95P or MDJWF)
822     - fixed several errors and redundancies in the data file
823     - experiment uses looped cells
824     - added matlab directory with diagnostic scripts for plotting of output
825    
826    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
827     - read AIM physics parameters from a file (data.aimphys)
828     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
829    
830    checkpoint46j_post
831    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
832    o move wVel computation at the end of the time step, in S/R integr_continuity
833    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
834    o update timeave pkg for wVel diagnostic.
835    checkpoint46j_pre
836    
837    checkpoint46i_post
838    o Clean up AIM package (and keep the results unchanged):
839      include CPP_OPTION and use IMPLICT NONE in all routines ;
840      declare all the variables _RL ; use _d 0 for all numerical constants.
841      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
842    
843    checkpoint46h_post
844    o cleaned up the use of rhoNil and rhoConst.
845      - rhoNil should only appear in the LINEAR equation of state, everywhere
846        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
847        and the dynamical equations are all divided by rhoConst
848    o introduced new parameter rhoConstFresh, a reference density of fresh
849      water, to remove the fresh water flux's dependence on rhoNil. The default
850      value is 999.8 kg/m^3
851    o cleanup up external_forcing.F and external_forcing_surf.F
852      - can now be used by both OCEANIC and OCEANICP
853    checkpoint46h_pre
854    
855     Added code to convert surface volume flux (fresh water) into
856     a mass flux when using P coordinates in the ocean (OCEANICP).
857     Note: It assumes you have set rho0=rhoConst=density of fresh water.
858    
859    checkpoint46g_post
860    o Include a new diagnostic variable phiHydLow for the ocean model
861      - in z-coordinates, it is the bottom pressure anomaly
862      - in p-coordinates, it is the sea surface elevation
863      - in both cases, these variable have global drift, reflecting the mass
864        drift in z-coordinates and the volume drift in p-coordinates
865      - included time averaging for phiHydLow, be aware of the drift!
866    o depth-dependent computation of Bo_surf for pressure coordinates
867      in the ocean (buoyancyRelation='OCEANICP')
868      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
869        Theta, Salinity, and Pressure in the parameter list. This routine is
870        presently contained in find_rho.F. This routine does not give the
871        correct density for 'POLY3', which would be a z-dependent reference
872        density.
873    o cleaned up find_rho
874      - removed obsolete 'eqn' from the parameter list.
875    o added two new verification experiments: gop and goz
876      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
877    checkpoint46g_pre
878    
879    checkpoint46f_post
880    o Enable tangent linear (forward mode) gradient checks:
881      - extended active file handling to g_... files
882      - added TANGENT_SIMULATION to theSimulationMode
883      - extended grdchk package accordingly
884    o added tangent linear setup in verification/carbon/code_ftl
885    o added adjoint setup in verification/front_relax/code_ad
886    
887    checkpoint46e_post
888    o Added new equation of state -> MDJWF
889      - EOS of McDougall et al., 2002, JAOT, submitted
890      - caveat: the equation of state is only valid for a smaller (more
891        realistic?) range of values than JMD95P/Z and UNESCO
892      - added masks to the calculation of pressure in store_pressure
893      - added more check values for density in check_eos (ini_eos.F), some of
894        the old check values are out of the range of the MDJWF-eos, so don't
895        expect perfect matches for those
896    checkpoint46e_pre
897    
898    checkpoint46d_post
899    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
900      'OCEANICP', also initialised field pressure correctly in ini_eos in the
901      case of pressure coordinates. eosType='JMD95Z' in
902      combination with buoyancyRelation='OCEANICP' now causes an error.
903    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
904      in find_alpha/beta.
905    checkpoint46d_pre
906    
907    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
908      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
909    
910    checkpoint46c_post
911    o Changes necessary for ocean in p-coordinates
912     -  Added new buoyancy relation = 'OCEANICP'
913     -  Added new parameters = gravitySign (this used to be contained inside
914        the factor dRdZ which I added when we first switched to R coordinates).
915     X GM/Redi is not compatible (yet)
916     X bottom drag and no-slip need to be debugged.
917    checkpoint46c_pre
918    
919    checkpoint46b_post
920    o Added new equation of state -> JMD95Z and JMD95P
921      - EOS of Jackett and McDougall, 1995, JAOT
922      - moved all EOS parameters into EOS.h
923      - new routines ini_eos.F, store_pressure.F
924    o Added UNESCO EOS, but not recommended because it requires
925      in-situ temperature (see JMD95)
926    o Modified formatting for knudsen2.f in utils/knudsen2 and added
927      unesco.f to be used with POLY3
928    checkpoint46b_pre
929    
930    checkpoint46a_post
931    o Added (atmospheric) pressure loading
932      - new field in FFIELDS.h, etc...
933      - new cpp flag ATMOSPHERIC_LOADING
934    o Changed hFacC to _hFacC in calc_phi_hyd.F
935    o Added SHORTWAVE_HEATING to some files for consistency
936    checkpoint46a_pre
937    
938    checkpoint46
939    further merges from release1_p5
940    o new ctrl package
941      - adopted from ECCO environment to enable optimization
942      - added Eliassen Palm fluxes to controls
943    o added Eliassen Palm flux controls to gradient check package
944    o cost package
945      - Compatible with new ctrl package
946      - added Eliassen Palm cost hooks
947      - modif's of existing cost functions
948    o Adjoint-related bug fixes in kpp:
949      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
950      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
951    o autodiff package
952      - flow directives:
953        + new for S/R do_the_model_io
954        + enhanced for S/R checkpoint
955        + new gmredi.flow
956      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
957        disable adcommon.h/g_common.h by default.
958      - fixed problem for adjoint of global_max
959    o modified verification/carbon/
960    o New setup for adjoint of global_ocean
961    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
962    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
963    o incorporated hooks for sponge layer code (external_forcing.F)
964    
965    checkpoint45d_post
966    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
967    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
968      (affects plume_on_slope "cg2d" output)
969    o add new parameter deltaTfreesurf for free-surface time stepping
970    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
971    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
972    o change phiMin in exp1 (to agree with documentation)
973    o add new flags:
974     - T,S forcing inside/outside Adams-Bashforth
975     - turn off temp,salt advection and/or forcing
976     - for each tracer, define internal flag for multiDimAdvection & A-B
977    o monitor: change definition of KE to check conservation of Energy
978    
979    checkpoint45c_post
980    o Removed f90 comments ("!")
981    o Modified initialisations to enable exf package for MITgcm
982      (without invoking ECCO_PACKAGE).
983    o modifications to gradient check package (Martin Losch)
984      - enable centered differences
985      - modified format of standard output
986    
987    checkpoint45b_post
988    o cleaned exchange calls in cg2d
989    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
990    o included CPP option SINGLE_LAYER_MODE in thermodynamics
991      to configure barotropic setup (Martin Losch)
992    o moved some initialisations within bi,bj loop in dynamics
993      (TAF flow dependency)
994    o in initialise_varia, moved call packages_init_variables
995      before convective_adjustment_init
996      (corresponding adjustment of TAF tape initialisation).
997    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
998    
999    checkpoint45a_post
1000    o compute Rho over the whole domain (extend iMin,jMin indices)
1001    o specific exchange for X-slice domain (case Ny=1)
1002    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
1003    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
1004    
1005    checkpoint44h_post = checkpoint45
1006    o Fix to restore differentiability:
1007      place at which packages_init_variables is called in
1008      initialise_varia is crucial for reverse control flow.
1009    o modifications in GMRedi to enable stable adjoint
1010      (corresponding modif's in thermodynamics, dynamics)
1011    o added missing hook for sponge layer code in external_forcing
1012    o modified test cost functions
1013    o storing in gad_advection (plus removal of write(0,*)!
1014    o missing headers TR1.h added in convective_adjustment routines
1015    o errorMessageUnit set non-equal zero in eeboot
1016      (conflict on some platforms, e.g. IBM SP3)
1017    o modified carbon verif.
1018    
1019    checkpoint44h_pre
1020    o vertical grid option: allow to put the Interface at the middle between
1021      2 cell-centers ; replace delZ in pkg/kpp by drF.
1022    o GM Advective form: Tracers are advected using the residual transport (=
1023      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
1024    
1025    checkpoint44g_post
1026    o fix surface correction term in multiDimAdvection (affects plume_on_slope
1027      results) ; ifdef missing in thermodynamics.F
1028    
1029    checkpoint44f_pre,checkpoint44f_post
1030    o added PTRACERS package
1031      This allows an arbitrary number of passive tracers to be integrated
1032      forward simultaneously with the dynamicaly model.
1033      + Implemented so far:
1034        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1035        - I/O and checkpointing
1036        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1037      + Not implemented so far:
1038        - KPP
1039        - OBCS
1040      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1041        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1042        line in data.pkg.
1043      + This package is disabled by default since it increases storage.
1044    
1045    
1046    o testscript: added -cleanup option
1047    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1048                 b) enable to filter 2D fields.
1049    
1050    checkpoint44e_pre,post
1051    o re-wrote convective adjustment to use pre-calculated weights
1052      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1053      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1054      Original calls to convect() still in place.
1055    
1056    chkpt44d_pre,post
1057    o added missing EXCLUDE_MONITOR flags
1058    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1059      (incompatible typ in MIN/MAX expressions caused problems
1060      on IBM SP3)
1061    o in genmake added variable MAKEDEPEND
1062      plus resetting for case SunOS
1063    o added timer_stats.c routine for IBM SP3
1064    o removed variables in dynamics
1065    !!! I forgot to create tag chkpt44d_pre !!!
1066    !!! But chkpt44d_pre = chkpt44c_post    !!!
1067    
1068    o real fresh water flux implemented with non-linear free-surface.
1069    
1070    chkpt44c_pre,post
1071    o few fix (mask in shap_s2, EmPmR in external_field_load,
1072      USE_NATURAL_BCS in solve_for_P);
1073    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1074    
1075    checkpoint44b_pre/_post
1076    o merge of relevant stuff from the ecco-branch:
1077      - genmake: removed $S64 overwrite for case SunOS
1078      - pkg/exf: update and corrections for field swapping and obcs
1079      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1080                  harmonized between ECCO and MITgcm
1081      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1082                      updated checkpointing_lev... lists for obcs
1083      - model/src: minor changes in forward_step, plot_field
1084                   added directive for divided adjoint in the_main_loop
1085      - pkg/mdsio: added mdsio_gl_slice
1086    
1087    o check parameters & config (chkpt44a_pre,post)
1088    o OBC and NonLin_FrSurf.
1089    
1090    checkpoint44
1091    o fix bug in mom_vi_del2uv
1092    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1093    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1094    o update AIM experiments (NCEP input files)
1095    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1096    o added some stuff for AD
1097    
1098    checkpoint43
1099    o added two new advection tests
1100    o added global 4x4 degree ocean test
1101    o added test of H&S94 with free surface on cube
1102    o some final mods for gradient check, adjoint,...
1103    
1104    checkpoint42
1105      Fixed AD-related problems:
1106    o Store directives up-to-date with re-arranged Adams-Bashforth
1107      (mainly thermodynamics.F)
1108    o New store directives for multi-dim. advection schemes
1109      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1110      * new common block and key passkey
1111      (mainly gad_advection.F)
1112    o Modified store directives for split of dynamics/thermodynamics
1113      for the case ALLOW_KPP
1114    o Cleaned argument list for timestep_tracer.F
1115    
1116    checkpoint41
1117    o re-formatted/added comments in prologues of key subroutines
1118      to work with protex
1119    
1120    checkpoint40
1121    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1122    o added FLT (floats) package from Arne along with demo. experiment
1123    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1124      implementation of forward-in-time forcing terms
1125    o more mods for non-linear free-surface including new variable
1126    o modified multi-dim method to work on cube
1127    o bug fix in KPP (from DM)
1128    
1129    checkpoint40pre9
1130    o added DST advection schemes
1131    o fix MPI bug on SGI's
1132    o modifications for non-linear free-surface
1133    o fixed conditionals for fixed flow/passive tracer only mode
1134    o added tension/strain form of stress tensor
1135    o changes to commenting of arguments for TAF/TAMC
1136    o added/updated many matlab scripts
1137    o added multi-dimensional advection method for tracers
1138      
1139    checkpoint40pre8
1140    o new package rw/
1141      Added method for dumping intermediate local arrays:
1142      mdsio_writetile - same as mdsio_writefield except works from inside
1143                        bi,bj loop
1144      mdsio_writelocal - same as mdsio_writetile except works for local
1145                         arrays
1146      write_local_r? - higher-level wrapper for mdsio_writelocal
1147      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1148      Example given at end of mom_vecinv.F that dumps some local arrays.
1149    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1150      control flux-form versus vector invariant code.
1151      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1152      or genmake -DISABLE ...
1153    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1154      (additional storing is now needed for case vecinv;
1155      currently nothing implemented to switch this storing off
1156      in case fluxform is used since no CPP flag available).
1157    
1158    checkpoint40pre7
1159    o bug fix in dynamics.F
1160      calc_viscosity called before k=1,Nr loop.
1161    o added some #ifdef's ALLOW_PASSIVE_TRACER
1162    o cleaned initialisations in ctrl_map_ini
1163      related to TAF
1164    
1165    checkpoint40pre6
1166    o split dynamics into thermodynamics & dynamics
1167    o corresponding split of calc_diffusivity into
1168      calc_diffusivity, calc_viscosity
1169      (kpp_calc_diff, kpp_calc_visc).
1170    o Added diffkr, kapgm to control variables
1171    o bug fix in gmredi_slope_limit for ldd97
1172    
1173    checkpoint40pre5
1174    o proper initialization of Adams-Bashforth time stepping
1175      + uses forward step for very first step of model (iter=0)
1176    o re-generated *all* output since almost all output is modified by this
1177      change (sorry but we've been putting this one off for about 2 years)
1178      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1179        *not* regenerated since they are already out of date and I don't
1180        want to create the impression that they are suddenly working.
1181    o removed KAP stuff for DEC's
1182    o modified/added many .cvsignore files in */code and */input
1183    o added new expt "solid-body.cs-32x32x1"
1184      + this uses an alternative form of ini_curvilinear_grid.F which
1185        is not necessarily any better than the current one...
1186    
1187    checkpoint40pre4
1188    o added re-initialisations of utrans,vtrans,rtrans in
1189      calc_common_factors which are crucial for TAF.
1190    o extended iMin,jMin range for calc_common_factors,
1191      calc_diffusivity
1192    o added option ALLOW_PASSIVE_TRACER
1193    o a few minor updates and fixes
1194    
1195    checkpoint40pre3
1196    o created calc_gtr1.F for gad package
1197    o split the_main_loop and re-introduced forward_step
1198    o some recomputations of nIter0 for TAMC
1199    
1200    checkpoint40pre2
1201    o Updated to latest branch of AJA, JMC
1202    o Added gradient check package
1203    o Added routines for passive tracer handling
1204    o Added carbon sequestration sensitivity experiment
1205    
1206    checkpoint39
1207     o Modifications and fixes to support TAMC
1208       (mainly missing or wrong directives)
1209     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1210       in addummy_in_stepping
1211     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1212     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1213     o Included following packages:
1214       cal: calendar
1215       exf: external forcing
1216       ecco: essential routines to control use of cal, exf
1217             (NB: this is not the full ECCO environment)
1218     o disabled some packages by default in genmake
1219    
1220    checkpoint38
1221     o see notes_c37_adj.txt
1222     o corrected wrong layer index in external_forcing_t
1223     o replaced the_main_loop/forward_step by the_main_loop
1224     o removed forceoutput from write_state
1225       (replaced criteria for initial/final state)
1226     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1227    
1228    checkpoint37
1229     o mdsio.F routine split and packaged in pkg/mdsio
1230       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1231        used unless genmake -disable=mdsio)
1232     o allow a more precise surface-geopotential gradient for the atmosphere
1233       taking into account the change in space of Alpha (=1/rho) at the surface.
1234     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1235       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1236     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1237       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1238       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1239     o Time-Average diagnostics defined as a pseudo package "timeave".
1240     o pickup files : old pickup (before c35) did not work with new code (c35
1241       and after) unless activating 2 commented lines in initialise-varia.
1242     o Non-Hydrostatic pickup file Pb fixed.
1243     o bug with Rigid-lid version (since c35) fixed.  
1244    
1245    checkpoint36
1246     o implement Crank-Nickelson barotropic time-stepping
1247     o recover Time-Average diagnostics
1248     o fix Pb in checkpoint (PR#19)
1249     o AIM become a standard package ; clean unused CPP_kees
1250    
1251    checkpoint35
1252     o subtantial rewrite of dynamics.f
1253     o allows staggered time-stepping
1254     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1255     o added bottom drag (linear + quadratic)
1256    
1257    checkpoint34
1258     o Modified exchange routines for correct reverse simulation.
1259     o Added verification output to comply with bug fix in impldiff.F
1260       as of c33 (exp2, natl_box).
1261     o Corrected store directives in dynamics.F
1262     o Corrected array boundaries in impldiff.F
1263     o Corrected array dimensions in gmredi.
1264       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1265     o Added routine GLOBAL_SUM_INT to global_sum.F
1266     o Added mdsio_gl.F for ECCO purposes.
1267    
1268    checkpoint33
1269     o Fixed bug in lower BC in impldiff.F
1270     o Fixed confusion about units of forcing arrays in FFIELDS.h
1271       namely Fu,Fv,Qnet,Qsw,EmPmR:
1272       - Removed verification/natl_box/code/external_fields_scale.F
1273         (did not differ from that in model/src)
1274       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1275         (see FFIELDS.h for description)
1276       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1277         kpp_calc.F and kpp_transport_t.F
1278       - Removed model/src/external_fields_scale.F and calls to it
1279       - verification/natl_box uses flux data with "atmospheric" sign so
1280         a special version of external_fields_load.F is used to
1281         change the data as it's read in. This way, the arrays
1282         have the right units and signs at all times tha a user could
1283         possibly use them.
1284     o Corrected genmake to delete a temporary file during configuration
1285    
1286    checkpoint32
1287     o Scaling of forcing fields moved from external_forcing.F to
1288       external_fields_scale.F, called directly after loading fields.
1289     o Surface relaxation terms added to surface tendency fields in
1290       extra subroutine.
1291     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1292       fields.
1293     o Changes in GMRedi to comply with packaging structure.
1294     o Modifications and bug fixes in KPP package.
1295     o Verification experiment for KPP added (verification/nat_box/)
1296    
1297    checkpoint31
1298     o Packages interface brought in line with defined standard
1299       -> new routines packages_...F
1300       -> changes in initialise_fixed.F, initialise_varia.F
1301       -> enables initialisation interface for ECCO package
1302     o Rescaling of external forcing fields immediately after read
1303       (removed from external_forcing.F)
1304       -> new: surface_fields_scale.F
1305       -> affects ini_foorcing.F, external_fields_load.F
1306     o Computation of surface tendencies before tendency updates.
1307       -> new: external_forcing_surf.F
1308     o Change of variable names useGMRedi, useKPP, useECCO
1309     o Further changes in dynamics.F, impldiff.F for TAMC
1310     o Tested for experiments 0, 2, 4.
1311       - not yet tested for GMRedi.
1312       - not yet tested for KPP.
1313    
1314    checkpoint30
1315     o Updates for OBCs
1316     o New experiment for test OBCs (internal_wave)
1317     o New output.txt in verification/exp4/results/
1318     o Updates for KPP: calculation of viscosity corrected, new variables
1319       kpp_dumpFreq and kpp_taveFreq
1320     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1321       and entry for T90 in genmake
1322    
1323    checkpoint29
1324     o packaged KPP and GM/Redi
1325    
1326    checkpoint28
1327     o Corrected initialization of hFacMin for difference vertical coordinates
1328     o Modified calculation of partial cell thickness to more robust algorithm
1329     o config_summary.F: replaced write_1D_... by write_0D_...
1330       read_write.F: added subroutines write_0D_...
1331     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1332       included some initialisations required for TAMC.
1333     o routine calc_isoslopes: modified sqrt computation to make it
1334       differentiable for zero argument.
1335     o routines dynamics, impldiff:
1336       included store directives and tape key computations required for TAMC.
1337     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1338    
1339    checkpoint27
1340     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1341       formulation works properly with variable resolution.
1342     o restructured the calling tree between the_model_main() and dynamics()
1343     o split initialise() into initialise_fixed() and initialise_varia()
1344     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1345       in new routine ini_psurf()
1346    
1347    checkpoint26
1348     o moved some #ifdef in optional routines to encompass everything
1349       except the argument declarations. This was using up some memory.
1350     o fixed macros like _ADT to work with both versions of Linux cpp
1351     o cleaned up some unused and uninitialized variables
1352       (helps when debugging with strict compile options)
1353     o split up CPP_EEOPTIONS.h into options and macros
1354       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1355     o patch for 2 processor JAM mode
1356    
1357    checkpoint25
1358     o updates for OBCs and NH
1359     o dramatically reduced memory usage
1360     o added "JAM" routines for use on Artic network
1361     o parameterization of convection by implicit vertical diffusion
1362     o added a diagnostic of convective index
1363     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1364       (this is was partly for OBCs and NH but also in anticipation of
1365        an explicit free-surface option)
1366     o initial state input files for U and V
1367    
1368    checkpoint24
1369     o Removed some spurious "REAL"s
1370     o Updated KPP to latest version from JPL
1371     o Added a COS(latitude) in horizontal viscosity
1372    
1373    checkpoint23
1374     o Added del^4 diffusion for salt and temperature
1375     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1376    
1377    checkpoint22
1378     o Made many small changes: implicit none, format(i5), etc...
1379     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1380    
1381    checkpoint21
1382     o Introduced new I/O package that supports direct-access records (mdsio.F)
1383     o Split-up mid-level I/O routines
1384     o Updated input data for experiments 0,1,2,4 and 5
1385     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1386    
1387    checkpoint20
1388     o Tidied up open-boundaries some more
1389     o Added non-hydrostatic code
1390     o Fixed some input data
1391     o Modified MPI start-up to work in "coupled" context.
1392    
1393    checkpoint19
1394     o Tidied up directory structure for verification experiments.
1395     o Added new code for open boundaries.
1396     o Corrected advective terms near boundaries.
1397     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1398     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1399     o Split default parameters out of ini_parms.F into set_defaults.F.
1400    
1401    checkpoint18
1402     o Further changes for optional code generation with
1403       CPP - ugh!
1404    
1405    checkpoint17
1406     o Beginning to incorporating modularity
1407       for supporting atmos. and ocean configs.
1408     o Small changes for TAMC complinace
1409     o New ultra simple test case. Barotropic box
1410       configuration "exp0".
1411    
1412    checkpoint16
1413     o Minor changes to exchange routines to support
1414       accumulation in reverse mode. Adjoint of an
1415       assignment is an addition.
1416     o Changes to support compilation by TAMC (LR(1)
1417       syntax) and by g77 under Linux ( 72 character
1418       limit ).
1419    
1420    checkpoint15
1421     Rewrote exchange routines to allow
1422     o General tile <-> tile connectivity.
1423     o TAMC reverse mode flag ( is this really needed? )
1424     o Variable width overlap and exchange region widths.
1425     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1426       shmput/shmget, VIA, SYSV shmem and every other cool
1427       communication method.
1428    
1429    checkpoint14
1430     Consistent isomorphism chages made. These allow dynamical core
1431     to support both pressure and meters as a vertical coordinate.
1432    
1433    checkpoint13
1434     Release which corrects global_max problem and a couple
1435     of KGM time-averaging diagnostic errors. Also contains
1436     a double-gyre experiment setup as well as the baseline
1437     4 degree global template. The double gyre template is
1438     organised to allow it to be applied automatically to
1439     the baseline configuration.
1440    
1441    branch-point-rdot
1442     A few tidy-ups have been made bt the real point of this
1443     check-point (excuse the pun) is to allow a branch to be
1444     made for the purposes of adding the rDot alterations.
1445     I don't want to commit the rDot to the main-trunk until
1446     we've actually tested it...
1447    
1448    checkpoint12
1449     Tidy up and added generic genmake script (formerly
1450     configure script).
1451     Released to testers.
1452    
1453  checkpoint11  checkpoint11
1454   Re-arranged initialise() and introduced ini_vertical_grid()   Re-arranged initialise() and introduced ini_vertical_grid()
1455   and ini_masks_etc().   and ini_masks_etc().

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