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revision 1.54 by jmc, Sat Oct 27 03:10:52 2001 UTC revision 1.182 by heimbach, Tue Oct 7 15:47:00 2003 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5  next checkpoint  
6  o apply Shapiro filter on T&S before calc_PhiHyd (stagger time stepping)  checkpoint 51h_pre
7    o modify gchem pkg to be more versatile
8    o modifications to clean up dic pkg
9    o add pkg/cfc
10    
11    checkpoint51g_post
12    o provide links for ARPACK and ADM*TLM
13    o start removing verification/vero/
14    o update AD-related stuff
15      (in particular some IF-statements in model/src/ routines)
16    o adding to verification/global_ocean.90x40x15/ adjoint of
17      vector invariant setup
18    
19    checkpoint51f_post
20    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
21    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
22      of tracer Green's fucntions for ocean inversion project.
23    
24    checkpoint51f_pre
25    o Added on-the-fly spatial interpolation capability
26        "USE_EXF_INTERPOLATION" to pkg/exf.
27      - This is a temporary Cartesian-grid hack until
28        the super-duper ESMF coupler becomes available.
29      - See verification/global_with_exf/README for usage example.
30      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
31        flags and modified pkg/seaice accordingly.
32    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
33        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
34        non-local transport term.
35    
36    checkpoint51e_post
37    o pkg/mom_vecinv:
38      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
39      - add time-ave diagnostic of vorticity advection.
40    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
41    o atmospheric geopotential: - include water vapor effect;
42                                - use p^kappa in p* scaling.
43    o land pkg: read initial state from files.
44    o AIM : add stratospheric drag in the upper level
45    
46    checkpoint51d_post
47    o change function ILNBLNK (=> last non-blank char.) to return zero
48      (instead of the string length) when the string. char is empty
49    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
50    o modif's to restore TAMC compatibility
51      - avoid "_d" constructs in PARAMETER declarations
52      - avoid interrupting lines by comment lines
53    o Use cluster local disks for purely local I/O
54      vs. globally visible disks needed for ctrl stuff
55      (merged from ecco-branch)
56      - new active_file_loc... and mdsio_..._loc routines
57      - affected packages: autodiff, ctrl, grdchk, mdsio
58    
59    checkpoint51c_post
60    o introducing integer flag debugLevel
61      - debLevZero: suppress all output
62      - debLevA: standard
63      - debLevB: equivalent to current debugMode=.TRUE.
64    o introducing pathname variable mdsioLocalDir for mdsio
65      that can be specified at runtime
66      (relevant for cluster I/O to local disk)
67    `
68    >>>checkpoint51b_post
69    adjoint of ptracers
70    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
71    o extended state in checkpoint_lev?, etc.
72    o alternative ctrl/cost with tr1 or ptracer
73    o new comlev1_bibj_ptracers
74    o new ptracers.flow
75    o made ptracers_forcing same as external_forcing_s
76    o added verification for adjoint with ptracers
77      - adm. grdchk fail so far
78      - tlm. grdchk OK
79      - checked tapelev/comlev recomputations: OK
80    <<<checkpoint51b_pre
81    
82    checkpoint51a_post
83    o added code for biogeochemistry package
84      - new pkgs: dic, gchem
85      - new subroutine in ptracers
86    o modify code for biogeo packages
87      - in model/src and pkg/ptracers
88    
89    checkpoint51
90    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
91      - autodiff, ctrl, exf, grdchk, seaice
92      kept separate packages
93      - cost, ecco, obcs
94    o updating verification/internal_wave, verification/lab_sea
95      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
96    
97    checkpoint50i_post
98    o Preparing next differentiable checkpoint and sync
99      of MAIN vs. ecco-branch
100      - 1st step: this one is differentiable
101      - 2nd step: next(! not this) checkpoint will have updated packages
102                  from ecco-branch)
103    
104    checkpoint50h_post
105    o new package "land": provide surface BC for AIM.
106    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
107    o AIM: use true log-P extrapolation for near surface temp (= as in
108        F.Molteni paper) ; update aim.5l_cs output.
109    o New variable in PARM03 for more flexible pickups
110    o somewhat cleaned package initialisation sequence for
111      ctrl/ cost/ ecco/ in packages_... routines
112    
113    checkpoint50g_post
114    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
115      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
116      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
117        made the default because of faster convergence than ADI
118    
119    checkpoint50f_post
120    o exf totally restructured
121      - replaced all exf_set_ routines by one generic exf_set_gen.F
122        and made sure it's still differentiable
123      - split exf_getffields.F into new exf_bulkformulae.F
124      - exf_inscal_/exf_outscal_ suffixes consistent with field names
125      - updated adjoint/makefile and relevant verif. accordingly
126    
127    checkpoint50f_pre
128     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
129          + change Evap over land. (update aim.5l_cs output)
130     o added missing .cvsignores and made uniform across expts
131     o changed configuration of tidal_basin_2d expt
132     o added pkg/debug functions for tracing code in fatal crashes
133     o tidied pkg/monitor to use MONITOR_OPTIONS.h
134     o new fn in pkg/monitor to stop model if solution grows too big
135     o removed lots of single quotes from comments
136    
137    checkpoint50e_post
138    o make KPP work with PTRACERS
139     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
140       nearly a copy of kpp_transport_s
141     - there is no analogue to SurfaceTendencyS, so I have to use
142       gPtr(of the surface layer) instead
143    o add a new platform SunFire+mpi (SunFire 15000) to genmake
144    checkpoint50e_pre
145    
146    checkpoint50d_post
147    o change kpp output from multiple-record state files to single-record state
148      files analogous to write_state.F
149    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
150      analogous to the cg2d-related output.
151    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
152      so that writing to internal file fn (with length 512) fails.
153    checkpoint50d_pre
154    
155    checkpoint50c_post
156    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
157    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
158    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
159    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
160    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
161    
162    checkpoint50c_pre
163    Merging from release1_p13:
164    o bug fix for pkg/seaice dynamic solver
165    o Added SEAICE_initialHEFF to pkg/seaice
166    
167    checkpoint50b_post
168    o store u*,v* in gU,V instead of in guNm1,gvNm1
169    o in order to put the momForcing out of the Adams-Bashforth:
170      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
171      to timestep.F
172    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
173    o re-generate output for highly sensitive test-exp:
174       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
175    
176    checkpoint50b_pre
177    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
178    o corrected CPP option mismatch in exf_Bulk... functions for case
179      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
180    
181    checkpoint50a_post
182    o Bug fix for merging between c50 and KPP.
183      ikey was passed from thermodynamics to kpp_calc via
184      common block rather than being recomputed in kpp_calc,
185      in contradiction with new key itdkey.
186      New key ikppkey created, and tamc.h headers updated.
187    
188    checkpoint50
189    - 2nd step of merge with ecco-branch:
190      merge changes in ecco-branch back into main trunk
191    - bug fix in find_alpha
192    - more storing in gmredi_calc_tensor.F, kpp_routines.F
193    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
194    - merged some sliced AD support routines
195    
196    checkpoint49
197    merged from ecco-branch:
198    o exf:
199      - Enable initialisation of forcing fields to constant
200        (runtime) values.
201      - in exf_getffields.F
202        Reduce i-/j-loop to interior domain, discarding overlaps.
203        That also fixes wrong TAF-key computations for key_1, key_2
204        with bulf formulae.
205      - exf_init.F modify #ifdef for exf_init_evap
206      - exf_getffieldrec.F, ctrl_getrec.F
207        The following INT-usages are not safe:
208          fldsecs  = int(fldsecs/fldperiod)*fldperiod
209          fldcount = int(fldsecs/fldperiod) + 1
210        and were modified.
211    o autodiff: checkpoint_lev...
212      - updated storing for bulk formulae (some arrays were missing)
213      - added state for seaice package
214      - synchronized with main branch
215    o DIVA:
216      Modif.s in
217      - the_main_loop.F
218      - the_model_main.F
219      and added cost_final_restore.F cost_final_store.F
220      o With these changes, it is possible to fully separate
221        the first forward run to compute the cost function (mdthe_main_loop)
222        and adjoint runs over individual DIVA intervals (adthe_main_loop)
223        into separate model executions.
224        This enables better tuning of DIVA to given queue sizes.
225      o Loss of cost function value in consecutive DIVA runs is
226        fixed by storing to 'costfinal' file.
227      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
228        beginning/end of adjoint integration is accounted for.
229      The current changes apply to TAF-1.4.26.
230      TAF has one remaining bug, requiring one manual change
231      (see MITgcm manual).
232    o cal: synchronized between MAIN and ecco-branch
233    
234    checkpoint48i_post
235    o Changes to restore differentiability of code w.r.t. previous tag
236      (mostly adding new routines to make list and replacing
237      pressure by totPhiHyd).
238    o Updated and merged grdchk package
239      - has both ADM and TLM checks
240      - works for single- and multi-proc.
241      - output cleaned
242      - worked successfully for parallel DIVA
243    o genmake:
244      - Adding -platform=SP4
245      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
246    o Modif. for DIVA:
247      ctrl_unpack should not be called in intermediate DIVA interval.
248      (similar thing would apply for active files such as
249      tbar, sbar, psbar, which should not be reinitialised;
250      only relevant for ecco-branch)
251    
252    checkpoint48h_post
253    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
254    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
255    o Added SEAICE_initialHEFF to pkg/seaice
256    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
257    
258    checkpoint48g_post
259    --- EOS:
260    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
261      store total Potential in totPhyHyd for diagnostics & EOS.
262    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
263    --- Pressure/geopotential gradient:
264    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
265    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
266      ( changes results of global_ocean_pressure )
267    o NLFS + z-coord.: add eta*Rho' contribution.
268    o accurate phiHyd when using interface-W at the middle between 2 centers
269     ( changes results of ideal_2D_oce )
270    o includes r* 2nd term in potential gradient.
271    
272    checkpoint48f_post
273    Merging from release1_p12:
274    o Modifications for using pkg/exf with pkg/seaice
275      - improved description of the various forcing configurations
276      - added basic radiation bulk formulae to pkg/exf
277      - units/sign fix for evap computation in exf_getffields.F
278      - updated verification/global_with_exf/results/output.txt
279    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
280      (SBO) core products, including oceanic mass, center-of-mass,
281      angular, and bottom pressure (see pkg/sbo/README.sbo).
282    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
283      to avoid negative values in shallow regions.
284      - updated verification/natl_box/results/output.txt
285      - updated verification/lab_sea/results/output.txt
286    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
287    o Added useSingleCpuIO option (see PARAMS.h).
288    o Updated useSingleCpuIO option in mdsio_writefield.F to
289      work with multi-field files, e.g., for single-file pickup.
290    o pkg/seaice:
291      - bug fix in growth.F: QNET for no shortwave case
292      - added HeffFile for specifying initial sea-ice thickness
293      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
294    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
295      kpp_transport_t.F, forward_step.F, and the_main_loop.F
296    o pkg/seaice:
297      - adjoint-friendly modifications
298      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
299    
300    checkpoint48e_post
301    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
302    o dynamics: change definition of computational domain & adapt mom_fluxform
303      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
304    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
305        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
306        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
307        global_ocean.90x40x15 global_with_exf global_ocean_pressure
308        inverted_barometer solid-body.cs-32x32x1
309      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
310    
311    checkpoint48d_post
312    o in preparation for r*:
313     a) use pre-computed gradient of hydrostatic potential:
314        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
315     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
316        => affects results of glob_oce_pressure (different truncation error)  
317      update output.txt of ideal_2D_oce & global_ocean_pressure
318    
319    checkpoint48d_pre
320    o in preparation for r*:
321      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
322      pass the 2 comp. of the grad. as arguments to momentum S/R.
323      but for the moment, only used if it does not change the results.
324    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
325    
326    checkpoint48c_post
327    Modifications in treatment of initial flux forcing controls
328    to avoid extra storing of flux fields.
329    
330    checkpoint48c_pre
331    o Added tidal_basin_2d experiment (currently 1D!)
332    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
333    
334    checkpoint48b_post
335    o r* coordinate added in #ifdef NONLIN_FRSURF block.
336     (modification to pressure gradient not yet implemented)
337    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
338      (for U & V) that are used for vertical advection of momentum.
339    
340    checkpoint48a_post
341    o In preparation for r*, use temp. array to compute vertical transport
342       in flux-form momentum pkg. => change results of few test-exp.
343      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
344                        lab_sea, natl_box & plume_on_slope
345    
346    checkpoint48
347    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
348    
349    checkpoint47j_post
350    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
351    o moved adexch from forward_step to addummy_in_stepping
352    o added exch in ctrl_map_...
353    o aveFreq.=0. at end of cost_final to avoid overwrite in
354      reverse checkpointing loop
355    o Yet more changes in gmredi:
356      * adgmredi_calc_tensor
357        avoiding all recomputation of gmredi_slope_limit
358      * adgmredi_x/y/rtransport
359        added flag for excessive storing to avoid recomp. of
360        u/v/rtans, dTdx/y/z
361        -> this is not really necessary and very memory-consuming
362      * adgmredi_slope_psi:
363        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
364      * gmredi_slope_limit
365        re-activated full calculation of taperfct for case 'ac02'
366    o updating verification/ adjoints of carbon, global_ocean.90x40x15
367    
368    checkpoint47i_post
369    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
370    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
371      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
372    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
373    o gmredi: fix few bugs.
374    
375    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
376    This will be a good checkpoint to plug into the ecco-branch.
377    o few modif.'s to get latest version adjointed
378      (mainly kick out code in ini_linear_phisurf)
379    o modif's to run adjoint with exactConserv
380    o case GM_BOLUS_ADVEC should be cleaned
381      S/R gmredi_slope_psi should be cleaned
382    o verification/carbon now has exactConserv=.TRUE.
383    
384    checkpoint47g_post
385    o time-average AIM output: becomes independent from statvars time-average
386      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
387    o After TAF bug fix:
388      Tested adjoint of gmredi package.
389      Tests were done with checkpoint47 rather than with latest
390      checkpoint47f_post since the latter is broken for the adjoint
391      verification/carbon/ contains both ADM and TLM gradient checks.
392    Here they are, before they get changed/lost/stolen.
393    Mostly modif.'s to fix numerical sensitivities.
394    Gradient checks OK for
395    - GM_taper_scheme:
396      * clipping
397      * ac02
398      * linear
399      * glw91
400      * dm95
401      * ldd97
402    - GMREDI_OPTIONS:
403      * GM_VISBECK_VARIABLE_K
404      * GM_NON_UNITY_DIAGONAL
405      * GM_EXTRA_DIAGONAL
406      * GM_BOLUS_ADVEC
407    in conjunction with data.gmredi parameters to be checked in
408    in a few minutes under verification/carbon/code/
409    
410    checkpoint47f_post
411    Merging from release1_p10:
412    o modifications for using pkg/exf with pkg/seaice
413      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
414        and SEAICE_EXTERNAL_FLUXES
415      - pkg/exf CPP options EXF_READ_EVAP and
416        EXF_NO_BULK_COMPUTATIONS
417      - usage examples are Experiments 8 and 9 in
418        verification/lab_sea/README
419      - verification/lab_sea default experiment now uses
420        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
421    
422    checkpoint47e_post
423    o created a tag prior to creating a branch
424    
425    checkpoint47d_post
426    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
427      at the bottom boundary had an erroneous half slip boundary condition
428    o added bottom drag and no slip boundary condition capabilities to
429      oceanic pressure coordinates code
430    o added new verification experiment global_ocean_pressure, this experiment is
431      also described in the tutorial section of the manual
432    checkpoint47d_pre
433    
434    checkpoint47c_post
435    o Added a verification experiment for a global cubed-sphere ocean run
436      -  verification/global_ocean.cubed32x32x30
437      -  uses pkg/therm_seaice and pkg/bulk_forcing
438    
439    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
440    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
441      when using P-coordinate; only implemented for atmospheric config.
442    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
443      NOTES: requires option NONLIN_FRSURF to be "#define".
444    o update advect_xz/results/output.txt (left from checkpoint44g_post)
445    
446    checkpoint47b_post
447    Merging from release1_p9:
448    o pkg/seaice
449      - removed GOTO's and added taf directives
450      - double precision constants to reduce the g77 (Linux)
451        to F77 (SGI) differences reported in release1_p8
452    o tools/genmake
453      - added SGI options
454    o verification/testscript
455      - updated to that of checkpoint47a_post
456    o verification/global_ocean.90x40x15/input/eedata
457      - modified for SGI f77 compatibility
458    o verification/lab_sea
459      - added description of sea-ice model
460      - added missing matlab routines
461      - added test of thermodynamics parallelization
462    
463    checkpoint47a_post
464    o new pkg: aim_v23
465     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
466       for now, keep the same surface forcing as before.
467     - Part-Cell implemented into AIM; check that Heat & Water are conserved
468     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
469     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
470    o add diagnostic of surface correction term in monitor output
471    
472    o bulk_force and therm_seaice
473    - Two packages:  bulk_force (Bulk forcing)
474      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
475    - Earlier integration from Stephaine Dutkiewicz
476      and Patrick Heimbach.
477    - Two ifdef statements for compile time,
478       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
479    
480    checkpoint47
481    differentiable version of checkpoint46n_post
482    o bug fix in quasihydrostaticterms
483    o * "clean" adjoint code (in terms of extensive recomputations)
484        can now be obtained for all GMREDI options (i.e. for
485        - GM_VISBECK_VARIABLE_K
486        - GM_NON_UNITY_DIAGONAL
487        - GM_EXTRA_DIAGONAL
488        - GM_BOLUS_ADVEC )
489      * However, wrong gradient check problem remains unsolved.
490      * New CPP options have been introduced for different
491        tapering schemes
492    o external_fields_load now part of differentiation list
493    o pressure needs multiple storing;
494      would be nice to have store_pressure at beginning or
495      end of forward_step, e.g. by having phiHyd global (5-dim.)
496      (NB: pressure is needed for certain cases in find_rho,
497      which is also invoked through convective_adjustment).
498    o recomputations in find_rho for cases
499     'JMD95'/'UNESCO' or 'MDJWF' are OK.
500    o #define ATMOSPHERIC_LOADING should be differentiable
501    o ini_forcing shifted to begining of initialise_varia
502    o Incorporating QNVS line search routines into MITgcm
503      (this is separate code, and therefore not under pkg)
504      lsopt/, optim/
505    o Updated verification/carbon/
506      - #define GM_VISBECK_VARIABLE_K
507      - GM_taper_scheme    = 'ldd97'    
508    
509    checkpoint46n_post
510    Merging from release1_p8:
511    o verification/natl_box:
512      updating new external_fields_load routine
513    o New package: pkg/seaice
514      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
515      The sea-ice code is based on Hibler (1979-1980).
516      Two sea-ice dynamic solvers, ADI and LSR, are included.
517      In addition to computing prognostic sea-ice variables and diagnosing
518      the forcing/external data fields that drive the ocean model,
519      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
520      The implied surface heat flux is then stored in variable
521      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
522      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
523      non-local transport term.  Because this call precedes model
524      thermodynamics, temperature under sea-ice may not be "exactly" at
525      the freezing point by the time theta is dumped or time-averaged.
526      N.B.: fairly large differences in accuracy occur across
527            different platforms/compilers; comparison between
528            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
529            generated output gives:
530       T           S           U           V
531      C D M    c        m  s        m  s        m  s        m  s
532      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
533      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
534      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
535    
536      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
537    o GAD:
538      - generated new common blocks to account for call of
539        same gad routines with differing traceridentities
540        (needed to modify tracerIdentity indices in GAD.h)
541      - generated separate common blocks for case useCubedSphereExchange
542        (Department of Futurology)
543      - parameter lists to gmredi_?transport: added tracerIdentity
544      - added new key indices to tamc.h
545    o external_fields_load:
546      - added this routine to TAF list
547      - needed to make some common blocks global and additional storing
548        along the same lines as exf package (checkpoint_lev?_directives.h)
549    o exf:
550      updated external forcing package
551      - bug fixes carried over from ecco-branch
552        (missing OBCS_OPTIONS.h in two routines)
553      - enable easy to use "no forcing".
554      - added exf I/O for atmospheric loading
555      - added exf I/O for runoff data
556      - transfered scaling between exf <-> MITgcm to exf namelist
557    o Adding new verification experiment global_with_exf.
558      This verification experiment is almost identical to the
559      global_ocean.90x40x15 experiment, except that it uses
560      the exf (and cal) package instead of the
561      external_fields_load routine (cf README file).
562    
563    checkpoint46m_post
564    o modified testscript to return -- when there are no lines of "%MON" output
565    o added new flag "quasiHydrostatic" for QH mode
566      and new routine quasihydrostaticterms()
567    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
568      New routine: mom_u_coriolis_nh()
569    o fixed sign of non-hydrostatic metric terms in u and v equations.
570      Depend on correct sign of gravitySign.
571    o added work.pc* to .cvsignore in aim directories using ifc
572    o introduced flag for controllin non-hydrostatic metric terms
573    o removed gravitySign from PARM04
574    o switched to g77/ifc from pgf77 in aim experiments
575    
576    checkpoint46l_post
577    o made convective adjustment work with pressure coordinates:
578     - changed the direction of k-loop in convective_adjustment.F for the
579       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
580     - adjusted the reference pressure k-index in convective_adjustment.F
581     - adjusted the convection condition in convect.F (in analogy to
582       calc_ivdc.F)
583     - convective_adjustment no longer computes anything on the halos
584     - removed the warnings about negative salinity from find_rho.F and
585       find_alpha.F; instead the new routine look_for_neg_salinity, called
586       at the beginning of find_rho, find_alpha, and find_beta, does a
587       check of the entire slice, if CPP-option
588       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
589    checkpoint46l_pre
590    
591    checkpoint46k_post
592    o fixed the verification/global_ocean.90x40x15 experiment:
593     - new bathymetry (the world according to A., JMC, and M.)
594     - new initial fields and forcing fields (*.bin files)
595     - new POLY3.COEFFS (for the next release one should switch to a full
596       equation of state: JMD95P or MDJWF)
597     - fixed several errors and redundancies in the data file
598     - experiment uses looped cells
599     - added matlab directory with diagnostic scripts for plotting of output
600    
601    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
602     - read AIM physics parameters from a file (data.aimphys)
603     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
604    
605    checkpoint46j_post
606    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
607    o move wVel computation at the end of the time step, in S/R integr_continuity
608    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
609    o update timeave pkg for wVel diagnostic.
610    checkpoint46j_pre
611    
612    checkpoint46i_post
613    o Clean up AIM package (and keep the results unchanged):
614      include CPP_OPTION and use IMPLICT NONE in all routines ;
615      declare all the variables _RL ; use _d 0 for all numerical constants.
616      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
617    
618    checkpoint46h_post
619    o cleaned up the use of rhoNil and rhoConst.
620      - rhoNil should only appear in the LINEAR equation of state, everywhere
621        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
622        and the dynamical equations are all divided by rhoConst
623    o introduced new parameter rhoConstFresh, a reference density of fresh
624      water, to remove the fresh water flux's dependence on rhoNil. The default
625      value is 999.8 kg/m^3
626    o cleanup up external_forcing.F and external_forcing_surf.F
627      - can now be used by both OCEANIC and OCEANICP
628    checkpoint46h_pre
629    
630     Added code to convert surface volume flux (fresh water) into
631     a mass flux when using P coordinates in the ocean (OCEANICP).
632     Note: It assumes you have set rho0=rhoConst=density of fresh water.
633    
634    checkpoint46g_post
635    o Include a new diagnostic variable phiHydLow for the ocean model
636      - in z-coordinates, it is the bottom pressure anomaly
637      - in p-coordinates, it is the sea surface elevation
638      - in both cases, these variable have global drift, reflecting the mass
639        drift in z-coordinates and the volume drift in p-coordinates
640      - included time averaging for phiHydLow, be aware of the drift!
641    o depth-dependent computation of Bo_surf for pressure coordinates
642      in the ocean (buoyancyRelation='OCEANICP')
643      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
644        Theta, Salinity, and Pressure in the parameter list. This routine is
645        presently contained in find_rho.F. This routine does not give the
646        correct density for 'POLY3', which would be a z-dependent reference
647        density.
648    o cleaned up find_rho
649      - removed obsolete 'eqn' from the parameter list.
650    o added two new verification experiments: gop and goz
651      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
652    checkpoint46g_pre
653    
654    checkpoint46f_post
655    o Enable tangent linear (forward mode) gradient checks:
656      - extended active file handling to g_... files
657      - added TANGENT_SIMULATION to theSimulationMode
658      - extended grdchk package accordingly
659    o added tangent linear setup in verification/carbon/code_ftl
660    o added adjoint setup in verification/front_relax/code_ad
661    
662    checkpoint46e_post
663    o Added new equation of state -> MDJWF
664      - EOS of McDougall et al., 2002, JAOT, submitted
665      - caveat: the equation of state is only valid for a smaller (more
666        realistic?) range of values than JMD95P/Z and UNESCO
667      - added masks to the calculation of pressure in store_pressure
668      - added more check values for density in check_eos (ini_eos.F), some of
669        the old check values are out of the range of the MDJWF-eos, so don't
670        expect perfect matches for those
671    checkpoint46e_pre
672    
673    checkpoint46d_post
674    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
675      'OCEANICP', also initialised field pressure correctly in ini_eos in the
676      case of pressure coordinates. eosType='JMD95Z' in
677      combination with buoyancyRelation='OCEANICP' now causes an error.
678    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
679      in find_alpha/beta.
680    checkpoint46d_pre
681    
682    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
683      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
684    
685    checkpoint46c_post
686    o Changes necessary for ocean in p-coordinates
687     -  Added new buoyancy relation = 'OCEANICP'
688     -  Added new parameters = gravitySign (this used to be contained inside
689        the factor dRdZ which I added when we first switched to R coordinates).
690     X GM/Redi is not compatible (yet)
691     X bottom drag and no-slip need to be debugged.
692    checkpoint46c_pre
693    
694    checkpoint46b_post
695    o Added new equation of state -> JMD95Z and JMD95P
696      - EOS of Jackett and McDougall, 1995, JAOT
697      - moved all EOS parameters into EOS.h
698      - new routines ini_eos.F, store_pressure.F
699    o Added UNESCO EOS, but not recommended because it requires
700      in-situ temperature (see JMD95)
701    o Modified formatting for knudsen2.f in utils/knudsen2 and added
702      unesco.f to be used with POLY3
703    checkpoint46b_pre
704    
705    checkpoint46a_post
706    o Added (atmospheric) pressure loading
707      - new field in FFIELDS.h, etc...
708      - new cpp flag ATMOSPHERIC_LOADING
709    o Changed hFacC to _hFacC in calc_phi_hyd.F
710    o Added SHORTWAVE_HEATING to some files for consistency
711    checkpoint46a_pre
712    
713    checkpoint46
714    further merges from release1_p5
715    o new ctrl package
716      - adopted from ECCO environment to enable optimization
717      - added Eliassen Palm fluxes to controls
718    o added Eliassen Palm flux controls to gradient check package
719    o cost package
720      - Compatible with new ctrl package
721      - added Eliassen Palm cost hooks
722      - modif's of existing cost functions
723    o Adjoint-related bug fixes in kpp:
724      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
725      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
726    o autodiff package
727      - flow directives:
728        + new for S/R do_the_model_io
729        + enhanced for S/R checkpoint
730        + new gmredi.flow
731      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
732        disable adcommon.h/g_common.h by default.
733      - fixed problem for adjoint of global_max
734    o modified verification/carbon/
735    o New setup for adjoint of global_ocean
736    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
737    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
738    o incorporated hooks for sponge layer code (external_forcing.F)
739    
740    checkpoint45d_post
741    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
742    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
743      (affects plume_on_slope "cg2d" output)
744    o add new parameter deltaTfreesurf for free-surface time stepping
745    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
746    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
747    o change phiMin in exp1 (to agree with documentation)
748    o add new flags:
749     - T,S forcing inside/outside Adams-Bashforth
750     - turn off temp,salt advection and/or forcing
751     - for each tracer, define internal flag for multiDimAdvection & A-B
752    o monitor: change definition of KE to check conservation of Energy
753    
754    checkpoint45c_post
755    o Removed f90 comments ("!")
756    o Modified initialisations to enable exf package for MITgcm
757      (without invoking ECCO_PACKAGE).
758    o modifications to gradient check package (Martin Losch)
759      - enable centered differences
760      - modified format of standard output
761    
762    checkpoint45b_post
763    o cleaned exchange calls in cg2d
764    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
765    o included CPP option SINGLE_LAYER_MODE in thermodynamics
766      to configure barotropic setup (Martin Losch)
767    o moved some initialisations within bi,bj loop in dynamics
768      (TAF flow dependency)
769    o in initialise_varia, moved call packages_init_variables
770      before convective_adjustment_init
771      (corresponding adjustment of TAF tape initialisation).
772    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
773    
774    checkpoint45a_post
775    o compute Rho over the whole domain (extend iMin,jMin indices)
776    o specific exchange for X-slice domain (case Ny=1)
777    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
778    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
779    
780    checkpoint44h_post = checkpoint45
781    o Fix to restore differentiability:
782      place at which packages_init_variables is called in
783      initialise_varia is crucial for reverse control flow.
784    o modifications in GMRedi to enable stable adjoint
785      (corresponding modif's in thermodynamics, dynamics)
786    o added missing hook for sponge layer code in external_forcing
787    o modified test cost functions
788    o storing in gad_advection (plus removal of write(0,*)!
789    o missing headers TR1.h added in convective_adjustment routines
790    o errorMessageUnit set non-equal zero in eeboot
791      (conflict on some platforms, e.g. IBM SP3)
792    o modified carbon verif.
793    
794    checkpoint44h_pre
795    o vertical grid option: allow to put the Interface at the middle between
796      2 cell-centers ; replace delZ in pkg/kpp by drF.
797    o GM Advective form: Tracers are advected using the residual transport (=
798      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
799    
800    checkpoint44g_post
801    o fix surface correction term in multiDimAdvection (affects plume_on_slope
802      results) ; ifdef missing in thermodynamics.F
803    
804    checkpoint44f_pre,checkpoint44f_post
805    o added PTRACERS package
806      This allows an arbitrary number of passive tracers to be integrated
807      forward simultaneously with the dynamicaly model.
808      + Implemented so far:
809        - basic forward algorithm (time-stepping, advection, diffusion, convection)
810        - I/O and checkpointing
811        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
812      + Not implemented so far:
813        - KPP
814        - OBCS
815      + No specific example supplied (yet) but global_ocean.90x40x15 has the
816        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
817        line in data.pkg.
818      + This package is disabled by default since it increases storage.
819    
820    
821    o testscript: added -cleanup option
822    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
823                 b) enable to filter 2D fields.
824    
825    checkpoint44e_pre,post
826    o re-wrote convective adjustment to use pre-calculated weights
827      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
828      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
829      Original calls to convect() still in place.
830    
831    chkpt44d_pre,post
832    o added missing EXCLUDE_MONITOR flags
833    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
834      (incompatible typ in MIN/MAX expressions caused problems
835      on IBM SP3)
836    o in genmake added variable MAKEDEPEND
837      plus resetting for case SunOS
838    o added timer_stats.c routine for IBM SP3
839    o removed variables in dynamics
840    !!! I forgot to create tag chkpt44d_pre !!!
841    !!! But chkpt44d_pre = chkpt44c_post    !!!
842    
843    o real fresh water flux implemented with non-linear free-surface.
844    
845    chkpt44c_pre,post
846    o few fix (mask in shap_s2, EmPmR in external_field_load,
847      USE_NATURAL_BCS in solve_for_P);
848    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
849    
850    checkpoint44b_pre/_post
851    o merge of relevant stuff from the ecco-branch:
852      - genmake: removed $S64 overwrite for case SunOS
853      - pkg/exf: update and corrections for field swapping and obcs
854      - pkg/ecco: parameter lists for the_model_main, the_main_loop
855                  harmonized between ECCO and MITgcm
856      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
857                      updated checkpointing_lev... lists for obcs
858      - model/src: minor changes in forward_step, plot_field
859                   added directive for divided adjoint in the_main_loop
860      - pkg/mdsio: added mdsio_gl_slice
861    
862    o check parameters & config (chkpt44a_pre,post)
863    o OBC and NonLin_FrSurf.
864    
865    checkpoint44
866  o fix bug in mom_vi_del2uv  o fix bug in mom_vi_del2uv
867    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
868    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
869    o update AIM experiments (NCEP input files)
870    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
871    o added some stuff for AD
872    
873  checkpoint43  checkpoint43
874  o added two new advection tests  o added two new advection tests

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