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revision 1.26 by adcroft, Mon Apr 10 14:41:52 2000 UTC revision 1.209 by heimbach, Mon Nov 17 23:45:57 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint52a_post
7    o modifications to make FREEZE (_SURFACE) flux visible to pkg/kpp
8      - moved surfaceTendencyTice from pkg/seaice to main code
9      - subroutine FREEZE_SURFACE now limits only surface temperature
10        and is called in FORWARD_STEP (if allowFreezing=.TRUE.)
11        => new output.txt for global_ocean.cs32x15 & global_with_exf
12      - keep the old version of FREEZE for backward compatibility;
13        global_ocean.90x40x15 left unchanged using useOldFreezing=.TRUE.
14      - corresponding modifs for TAF directives
15    o added surface flux output variables to TIMEAVE_STATVARS
16    o time-averaged output for pkg/ptracers
17    o fix problem with ECCO-related divided adjoint
18      snapshot file was missing some ad-variables,
19      but no warning issued by TAF
20    
21    checkpoint52a_pre
22    o some bug fixes for #undef REAL4_IS_SLOW
23    
24    checkpoint52 = ecco_c52_e35
25    o after testing adjoints of checkpoint51u_post
26    
27    checkpoint51u_post
28    o this is the post-merge tag of the ecco-branch
29      (needs another clean checkout and re-testing)
30    o various natl_box_adjoint configs and results
31      but no input fields
32    o obcs adjoint not yet merged!
33    o adding ECCO global 1x1 and 2x2 degree configs
34    o updated/extended some store directives for seaice
35    o pkg/ecco now containes ecco-specific part of cost function
36    o top level routines the_main_loop, forward_step
37      supersede those in model/src/
38      previous input data.cost now in data.ecco
39      (new namelist ecco_cost_nml)
40    o in ctrl/ cleaned some cross-dependencies and updated CPP options
41    
42    checkpoint51t_post
43    o this is the pre-merge tag of the ecco-branch
44    
45    checkpoint51s_post
46    o cleanup: removed various obsolete #define-s
47    o pkg/grdchk
48      - renamed 'ph-grd 3' to 'grad-res'
49      - merged from ecco-branch
50        (remaining bug fixes for obcs gradient checks)
51      - additional high-precision output for testreport
52        (grep for 'precision_grdchk_result')
53    
54    checkpoint51r_post
55    o cleaned up or removed CPP_OPTIONS.h files
56    o updated results for some of the tests to reflect the new
57      optfiles (-ieee: -O0 instead of -O3)
58    
59    checkpoint51q_post
60    o cd_code:
61      - moved cd_scheme.F -> cd_code_scheme.F
62      - separate read_checkpoint from cd_code_ini_vars.F
63      - separated cd_code part from write_checkpoint
64      - updated AD_SOURCE, generated .flow
65      - added CD_CODE_VARS.h to the_main_loop
66      - Moving cd_code specific store dir.s to pkg/cd_code
67    o ctrl package totally restructured
68      - pack/unpack now optional and decoupled from
69        xx_/adxx_ I/O
70      - ctrl_pack/unpack cleaned
71        (new routines ctrl_init_ctrlvar.F, pkg/ctrl/ctrl_init_wet.F)
72      - confined inclusion of AD_CONFIG.h to where necessary.
73    o genmake2: changed AD dependencies from SRCFILES to AD_FILES
74    
75    checkpoint51p_post
76    o create initial cd_code package
77      - WARNING: the initialization of fields within packages
78        is broken because INI_FIELDS (where READ_CHECKPOINT is
79        called) is called *before* PACKAGES_INIT_VARIABLES.
80        This seems to be backwards since
81        1) its important to initially zero the entire field including
82           the "halo" region
83        2) zeroing needs to be done *before* reading pickup info
84           and the pickup call might or might not happen in any
85           particular run
86      - this needs an overhaul for R2
87    o cleanup verification/*/code/GMREDI_OPTIONS.h
88    o cleanup testreport
89    
90    checkpoint51o_post
91    o bringing AD-related verif's up to date with genmake2
92      - carbon/
93      - global_ocean.90x40x15/
94      - hs.94.1x64x5/
95      - (front_relax/ )
96    o (more) consistent directory structure for AD-related verif.'s
97    o cleaning ALLOW_GRADIENT_CHECK -> ALLOW_GRDCHK
98    o cleaning some ALLOW_TANGENTLINEAR_RUN -> ALLOW_AUTODIFF
99    o bug fix in find_alpha.F for MDJWF:
100      - modif. to alpha = 1/D*( dN/dT - rho*dD/Dt) to account for
101        change rho -> rho-rhoConst
102      - replace call find_rho to find_rhonum
103    o initialisation of rFlx extended to full array (required by TAF)
104      and shifted to thermodynamics
105    o removed PTRACERS.h in ptracers routine
106    o added surfacetendencyPtr to S/R parameter list pracers_forcing
107    o Correcting initialisations for fVerU, fVerV.
108    o helping TAF to recognize dependency on kUp for
109      fVerU, fVerV
110    o Replacing delZ by delR in pkg/ctrl/
111    checkpoint51o_pre
112    
113    o undid all of cp51 pending some cleanups and discussion
114    o added the [#include "AD_CONFIG.h"] statement to all files that need
115       it for adjoint/tl #defines
116     o re-worked the build logic in genmake2 to support AD_CONFIG.h
117     o removed tools/genmake since it no longer works
118    
119    checkpoint51n_post
120    o modifications to make FREEZE flux visible to pkg/kpp
121      - moved surfaceTendencyTice from pkg/seaice to main code
122      - FREEZE & EXTERNAL_FORCING_SURF moved to FORWARD_STEP
123      - subroutine FREEZE now limits only surface temperature
124        (this means new output.txt for global_ocean.90x40x15,
125         global_ocean.cs32x15, and global_with_exf)
126    o added surface flux output variables to TIMEAVE_STATVARS
127    
128    checkpoint51n_pre
129    o added "#undef ALLOW_USE_MPI" support to eesupp/src/gather_2d.F
130    o added [#include "AD_CONFIG.h"] to all files that use the following
131      defines:
132      - ALLOW_ADJOINT_RUN
133      - ALLOW_TANGENTLINEAR_RUN
134      - ALLOW_ECCO_OPTIMIZATION
135    
136    checkpoint51m_post
137    o incorporating changes to get TAMC/TAF working in genmake2
138      - added new TAMC/TAF targets to the Makefile
139      - various cleanups related to package handling
140      - these changes should have no impact on the forward model
141    
142    checkpoint51l_post
143    o changes to pkg/cal and pkg/exf that allow and speed-up long integrations
144     - faster algorithm for cal_addtime.F
145     - higher precision arithmetic, where needed
146     - pkg/exf *startdate variables changed from calendar date to
147       model integration time
148    
149    checkpoint51l_pre
150    o add salt flux to forcing fields (used when salty sea-ice forms or melts)
151    o enable to apply restoring on S & T only in a latitude band.
152    o update output (external_forcing_surf modif. change truncation errors)
153       global_ocean.cs32x15, global_ocean_pressure, lab_sea, natl_box
154    
155    checkpoint51k_post
156    o change default to: useNHMTerms=.FALSE.
157     - new output.txt for atmos. exp (NHMTerms were wrong but now turned off):
158       adjustment.128x64x1, aim.5l_Eq_Ch, aim.5l_LatLon, hs94.128x64x5, hs94.1x64x5
159     - new output.txt for idealized oceanic exp (NHMTerms are now turned off):
160        exp1, ideal_2D_oce
161     - change data file of oceanic exp (leave the results unchanged for now)
162       exp2, global_ocean[90x40x15,pressure,with_exf], lab_sea, natl_box
163    o set gravitySign automatically according to the vertical coordinate used
164      (and change sign: back to "logical" value: +1 when R increases downward)
165    o added an include barrier to the default CPP_OPTIONS.h and
166      removed the #include "PACKAGES_CONFIG.h" from it
167    o fix a bug in mom_fluxform (from chk51j_post)
168    
169    checkpoint51j_post
170    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
171    o adjusted some flow directives (dynamics, thermodynamics)
172    o added cubed-sphere case to test cost function
173    o heckpoint_lev?_directives.h now include
174      pkg-specific directives, whenever those are enabled.
175    o Moving pkg-specific flow directives to corresponding pkg
176      Moving pkg-specific differentiation list to corresponding pkg
177      Moving pkg-specific checkpoint-lev storing to corresponding pkg
178      ---> conventions are
179           - pkg_ad.flow
180           - pkg_ad_diff.list
181           - pkg_ad_check_lev?_dir.h
182    
183    checkpoint51i_post
184    o merge of the branch-genmake2
185      - knowingly breaks the older genmake
186      - automatic generation of all ALLOW_${PKG_NAME} defines
187      - new testreport supersedes older testscript
188    o large number of package inclusion and header cleanups
189    checkpoint51i_pre
190    
191    o new output for adjoin of global ocean vector invariant
192    o fix for checkpoint of thermodynamic seaice and bulk_force
193    o Steph gchem various cleanups
194    
195    checkpoint 51h_pre
196    o fixed some single quotes
197    o modify gchem pkg to be more versatile
198    o modifications to clean up dic pkg
199    o add pkg/cfc
200    
201    checkpoint51g_post
202    o provide links for ARPACK and ADM*TLM
203    o start removing verification/vero/
204    o update AD-related stuff
205      (in particular some IF-statements in model/src/ routines)
206    o adding to verification/global_ocean.90x40x15/ adjoint of
207      vector invariant setup
208    
209    checkpoint51f_post
210    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
211    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
212      of tracer Green's fucntions for ocean inversion project.
213    
214    checkpoint51f_pre
215    o Added on-the-fly spatial interpolation capability
216        "USE_EXF_INTERPOLATION" to pkg/exf.
217      - This is a temporary Cartesian-grid hack until
218        the super-duper ESMF coupler becomes available.
219      - See verification/global_with_exf/README for usage example.
220      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
221        flags and modified pkg/seaice accordingly.
222    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
223        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
224        non-local transport term.
225    
226    checkpoint51e_post
227    o pkg/mom_vecinv:
228      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
229      - add time-ave diagnostic of vorticity advection.
230    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
231    o atmospheric geopotential: - include water vapor effect;
232                                - use p^kappa in p* scaling.
233    o land pkg: read initial state from files.
234    o AIM : add stratospheric drag in the upper level
235    
236    checkpoint51d_post
237    o change function ILNBLNK (=> last non-blank char.) to return zero
238      (instead of the string length) when the string. char is empty
239    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
240    o modif's to restore TAMC compatibility
241      - avoid "_d" constructs in PARAMETER declarations
242      - avoid interrupting lines by comment lines
243    o Use cluster local disks for purely local I/O
244      vs. globally visible disks needed for ctrl stuff
245      (merged from ecco-branch)
246      - new active_file_loc... and mdsio_..._loc routines
247      - affected packages: autodiff, ctrl, grdchk, mdsio
248    
249    checkpoint51c_post
250    o introducing integer flag debugLevel
251      - debLevZero: suppress all output
252      - debLevA: standard
253      - debLevB: equivalent to current debugMode=.TRUE.
254    o introducing pathname variable mdsioLocalDir for mdsio
255      that can be specified at runtime
256      (relevant for cluster I/O to local disk)
257    `
258    >>>checkpoint51b_post
259    adjoint of ptracers
260    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
261    o extended state in checkpoint_lev?, etc.
262    o alternative ctrl/cost with tr1 or ptracer
263    o new comlev1_bibj_ptracers
264    o new ptracers.flow
265    o made ptracers_forcing same as external_forcing_s
266    o added verification for adjoint with ptracers
267      - adm. grdchk fail so far
268      - tlm. grdchk OK
269      - checked tapelev/comlev recomputations: OK
270    <<<checkpoint51b_pre
271    
272    checkpoint51a_post
273    o added code for biogeochemistry package
274      - new pkgs: dic, gchem
275      - new subroutine in ptracers
276    o modify code for biogeo packages
277      - in model/src and pkg/ptracers
278    
279    checkpoint51
280    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
281      - autodiff, ctrl, exf, grdchk, seaice
282      kept separate packages
283      - cost, ecco, obcs
284    o updating verification/internal_wave, verification/lab_sea
285      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
286    
287    checkpoint50i_post
288    o Preparing next differentiable checkpoint and sync
289      of MAIN vs. ecco-branch
290      - 1st step: this one is differentiable
291      - 2nd step: next(! not this) checkpoint will have updated packages
292                  from ecco-branch)
293    
294    checkpoint50h_post
295    o new package "land": provide surface BC for AIM.
296    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
297    o AIM: use true log-P extrapolation for near surface temp (= as in
298        F.Molteni paper) ; update aim.5l_cs output.
299    o New variable in PARM03 for more flexible pickups
300    o somewhat cleaned package initialisation sequence for
301      ctrl/ cost/ ecco/ in packages_... routines
302    
303    checkpoint50g_post
304    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
305      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
306      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
307        made the default because of faster convergence than ADI
308    
309    checkpoint50f_post
310    o exf totally restructured
311      - replaced all exf_set_ routines by one generic exf_set_gen.F
312        and made sure it's still differentiable
313      - split exf_getffields.F into new exf_bulkformulae.F
314      - exf_inscal_/exf_outscal_ suffixes consistent with field names
315      - updated adjoint/makefile and relevant verif. accordingly
316    
317    checkpoint50f_pre
318     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
319          + change Evap over land. (update aim.5l_cs output)
320     o added missing .cvsignores and made uniform across expts
321     o changed configuration of tidal_basin_2d expt
322     o added pkg/debug functions for tracing code in fatal crashes
323     o tidied pkg/monitor to use MONITOR_OPTIONS.h
324     o new fn in pkg/monitor to stop model if solution grows too big
325     o removed lots of single quotes from comments
326    
327    checkpoint50e_post
328    o make KPP work with PTRACERS
329     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
330       nearly a copy of kpp_transport_s
331     - there is no analogue to SurfaceTendencyS, so I have to use
332       gPtr(of the surface layer) instead
333    o add a new platform SunFire+mpi (SunFire 15000) to genmake
334    checkpoint50e_pre
335    
336    checkpoint50d_post
337    o change kpp output from multiple-record state files to single-record state
338      files analogous to write_state.F
339    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
340      analogous to the cg2d-related output.
341    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
342      so that writing to internal file fn (with length 512) fails.
343    checkpoint50d_pre
344    
345    checkpoint50c_post
346    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
347    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
348    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
349    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
350    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
351    
352    checkpoint50c_pre
353    Merging from release1_p13:
354    o bug fix for pkg/seaice dynamic solver
355    o Added SEAICE_initialHEFF to pkg/seaice
356    
357    checkpoint50b_post
358    o store u*,v* in gU,V instead of in guNm1,gvNm1
359    o in order to put the momForcing out of the Adams-Bashforth:
360      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
361      to timestep.F
362    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
363    o re-generate output for highly sensitive test-exp:
364       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
365    
366    checkpoint50b_pre
367    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
368    o corrected CPP option mismatch in exf_Bulk... functions for case
369      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
370    
371    checkpoint50a_post
372    o Bug fix for merging between c50 and KPP.
373      ikey was passed from thermodynamics to kpp_calc via
374      common block rather than being recomputed in kpp_calc,
375      in contradiction with new key itdkey.
376      New key ikppkey created, and tamc.h headers updated.
377    
378    checkpoint50
379    - 2nd step of merge with ecco-branch:
380      merge changes in ecco-branch back into main trunk
381    - bug fix in find_alpha
382    - more storing in gmredi_calc_tensor.F, kpp_routines.F
383    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
384    - merged some sliced AD support routines
385    
386    checkpoint49
387    merged from ecco-branch:
388    o exf:
389      - Enable initialisation of forcing fields to constant
390        (runtime) values.
391      - in exf_getffields.F
392        Reduce i-/j-loop to interior domain, discarding overlaps.
393        That also fixes wrong TAF-key computations for key_1, key_2
394        with bulf formulae.
395      - exf_init.F modify #ifdef for exf_init_evap
396      - exf_getffieldrec.F, ctrl_getrec.F
397        The following INT-usages are not safe:
398          fldsecs  = int(fldsecs/fldperiod)*fldperiod
399          fldcount = int(fldsecs/fldperiod) + 1
400        and were modified.
401    o autodiff: checkpoint_lev...
402      - updated storing for bulk formulae (some arrays were missing)
403      - added state for seaice package
404      - synchronized with main branch
405    o DIVA:
406      Modif.s in
407      - the_main_loop.F
408      - the_model_main.F
409      and added cost_final_restore.F cost_final_store.F
410      o With these changes, it is possible to fully separate
411        the first forward run to compute the cost function (mdthe_main_loop)
412        and adjoint runs over individual DIVA intervals (adthe_main_loop)
413        into separate model executions.
414        This enables better tuning of DIVA to given queue sizes.
415      o Loss of cost function value in consecutive DIVA runs is
416        fixed by storing to 'costfinal' file.
417      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
418        beginning/end of adjoint integration is accounted for.
419      The current changes apply to TAF-1.4.26.
420      TAF has one remaining bug, requiring one manual change
421      (see MITgcm manual).
422    o cal: synchronized between MAIN and ecco-branch
423    
424    checkpoint48i_post
425    o Changes to restore differentiability of code w.r.t. previous tag
426      (mostly adding new routines to make list and replacing
427      pressure by totPhiHyd).
428    o Updated and merged grdchk package
429      - has both ADM and TLM checks
430      - works for single- and multi-proc.
431      - output cleaned
432      - worked successfully for parallel DIVA
433    o genmake:
434      - Adding -platform=SP4
435      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
436    o Modif. for DIVA:
437      ctrl_unpack should not be called in intermediate DIVA interval.
438      (similar thing would apply for active files such as
439      tbar, sbar, psbar, which should not be reinitialised;
440      only relevant for ecco-branch)
441    
442    checkpoint48h_post
443    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
444    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
445    o Added SEAICE_initialHEFF to pkg/seaice
446    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
447    
448    checkpoint48g_post
449    --- EOS:
450    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
451      store total Potential in totPhyHyd for diagnostics & EOS.
452    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
453    --- Pressure/geopotential gradient:
454    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
455    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
456      ( changes results of global_ocean_pressure )
457    o NLFS + z-coord.: add eta*Rho' contribution.
458    o accurate phiHyd when using interface-W at the middle between 2 centers
459     ( changes results of ideal_2D_oce )
460    o includes r* 2nd term in potential gradient.
461    
462    checkpoint48f_post
463    Merging from release1_p12:
464    o Modifications for using pkg/exf with pkg/seaice
465      - improved description of the various forcing configurations
466      - added basic radiation bulk formulae to pkg/exf
467      - units/sign fix for evap computation in exf_getffields.F
468      - updated verification/global_with_exf/results/output.txt
469    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
470      (SBO) core products, including oceanic mass, center-of-mass,
471      angular, and bottom pressure (see pkg/sbo/README.sbo).
472    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
473      to avoid negative values in shallow regions.
474      - updated verification/natl_box/results/output.txt
475      - updated verification/lab_sea/results/output.txt
476    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
477    o Added useSingleCpuIO option (see PARAMS.h).
478    o Updated useSingleCpuIO option in mdsio_writefield.F to
479      work with multi-field files, e.g., for single-file pickup.
480    o pkg/seaice:
481      - bug fix in growth.F: QNET for no shortwave case
482      - added HeffFile for specifying initial sea-ice thickness
483      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
484    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
485      kpp_transport_t.F, forward_step.F, and the_main_loop.F
486    o pkg/seaice:
487      - adjoint-friendly modifications
488      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
489    
490    checkpoint48e_post
491    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
492    o dynamics: change definition of computational domain & adapt mom_fluxform
493      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
494    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
495        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
496        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
497        global_ocean.90x40x15 global_with_exf global_ocean_pressure
498        inverted_barometer solid-body.cs-32x32x1
499      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
500    
501    checkpoint48d_post
502    o in preparation for r*:
503     a) use pre-computed gradient of hydrostatic potential:
504        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
505     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
506        => affects results of glob_oce_pressure (different truncation error)  
507      update output.txt of ideal_2D_oce & global_ocean_pressure
508    
509    checkpoint48d_pre
510    o in preparation for r*:
511      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
512      pass the 2 comp. of the grad. as arguments to momentum S/R.
513      but for the moment, only used if it does not change the results.
514    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
515    
516    checkpoint48c_post
517    Modifications in treatment of initial flux forcing controls
518    to avoid extra storing of flux fields.
519    
520    checkpoint48c_pre
521    o Added tidal_basin_2d experiment (currently 1D!)
522    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
523    
524    checkpoint48b_post
525    o r* coordinate added in #ifdef NONLIN_FRSURF block.
526     (modification to pressure gradient not yet implemented)
527    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
528      (for U & V) that are used for vertical advection of momentum.
529    
530    checkpoint48a_post
531    o In preparation for r*, use temp. array to compute vertical transport
532       in flux-form momentum pkg. => change results of few test-exp.
533      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
534                        lab_sea, natl_box & plume_on_slope
535    
536    checkpoint48
537    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
538    
539    checkpoint47j_post
540    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
541    o moved adexch from forward_step to addummy_in_stepping
542    o added exch in ctrl_map_...
543    o aveFreq.=0. at end of cost_final to avoid overwrite in
544      reverse checkpointing loop
545    o Yet more changes in gmredi:
546      * adgmredi_calc_tensor
547        avoiding all recomputation of gmredi_slope_limit
548      * adgmredi_x/y/rtransport
549        added flag for excessive storing to avoid recomp. of
550        u/v/rtans, dTdx/y/z
551        -> this is not really necessary and very memory-consuming
552      * adgmredi_slope_psi:
553        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
554      * gmredi_slope_limit
555        re-activated full calculation of taperfct for case 'ac02'
556    o updating verification/ adjoints of carbon, global_ocean.90x40x15
557    
558    checkpoint47i_post
559    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
560    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
561      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
562    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
563    o gmredi: fix few bugs.
564    
565    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
566    This will be a good checkpoint to plug into the ecco-branch.
567    o few modif.'s to get latest version adjointed
568      (mainly kick out code in ini_linear_phisurf)
569    o modif's to run adjoint with exactConserv
570    o case GM_BOLUS_ADVEC should be cleaned
571      S/R gmredi_slope_psi should be cleaned
572    o verification/carbon now has exactConserv=.TRUE.
573    
574    checkpoint47g_post
575    o time-average AIM output: becomes independent from statvars time-average
576      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
577    o After TAF bug fix:
578      Tested adjoint of gmredi package.
579      Tests were done with checkpoint47 rather than with latest
580      checkpoint47f_post since the latter is broken for the adjoint
581      verification/carbon/ contains both ADM and TLM gradient checks.
582    Here they are, before they get changed/lost/stolen.
583    Mostly modif.'s to fix numerical sensitivities.
584    Gradient checks OK for
585    - GM_taper_scheme:
586      * clipping
587      * ac02
588      * linear
589      * glw91
590      * dm95
591      * ldd97
592    - GMREDI_OPTIONS:
593      * GM_VISBECK_VARIABLE_K
594      * GM_NON_UNITY_DIAGONAL
595      * GM_EXTRA_DIAGONAL
596      * GM_BOLUS_ADVEC
597    in conjunction with data.gmredi parameters to be checked in
598    in a few minutes under verification/carbon/code/
599    
600    checkpoint47f_post
601    Merging from release1_p10:
602    o modifications for using pkg/exf with pkg/seaice
603      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
604        and SEAICE_EXTERNAL_FLUXES
605      - pkg/exf CPP options EXF_READ_EVAP and
606        EXF_NO_BULK_COMPUTATIONS
607      - usage examples are Experiments 8 and 9 in
608        verification/lab_sea/README
609      - verification/lab_sea default experiment now uses
610        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
611    
612    checkpoint47e_post
613    o created a tag prior to creating a branch
614    
615    checkpoint47d_post
616    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
617      at the bottom boundary had an erroneous half slip boundary condition
618    o added bottom drag and no slip boundary condition capabilities to
619      oceanic pressure coordinates code
620    o added new verification experiment global_ocean_pressure, this experiment is
621      also described in the tutorial section of the manual
622    checkpoint47d_pre
623    
624    checkpoint47c_post
625    o Added a verification experiment for a global cubed-sphere ocean run
626      -  verification/global_ocean.cubed32x32x30
627      -  uses pkg/therm_seaice and pkg/bulk_forcing
628    
629    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
630    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
631      when using P-coordinate; only implemented for atmospheric config.
632    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
633      NOTES: requires option NONLIN_FRSURF to be "#define".
634    o update advect_xz/results/output.txt (left from checkpoint44g_post)
635    
636    checkpoint47b_post
637    Merging from release1_p9:
638    o pkg/seaice
639      - removed GOTO's and added taf directives
640      - double precision constants to reduce the g77 (Linux)
641        to F77 (SGI) differences reported in release1_p8
642    o tools/genmake
643      - added SGI options
644    o verification/testscript
645      - updated to that of checkpoint47a_post
646    o verification/global_ocean.90x40x15/input/eedata
647      - modified for SGI f77 compatibility
648    o verification/lab_sea
649      - added description of sea-ice model
650      - added missing matlab routines
651      - added test of thermodynamics parallelization
652    
653    checkpoint47a_post
654    o new pkg: aim_v23
655     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
656       for now, keep the same surface forcing as before.
657     - Part-Cell implemented into AIM; check that Heat & Water are conserved
658     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
659     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
660    o add diagnostic of surface correction term in monitor output
661    
662    o bulk_force and therm_seaice
663    - Two packages:  bulk_force (Bulk forcing)
664      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
665    - Earlier integration from Stephaine Dutkiewicz
666      and Patrick Heimbach.
667    - Two ifdef statements for compile time,
668       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
669    
670    checkpoint47
671    differentiable version of checkpoint46n_post
672    o bug fix in quasihydrostaticterms
673    o * "clean" adjoint code (in terms of extensive recomputations)
674        can now be obtained for all GMREDI options (i.e. for
675        - GM_VISBECK_VARIABLE_K
676        - GM_NON_UNITY_DIAGONAL
677        - GM_EXTRA_DIAGONAL
678        - GM_BOLUS_ADVEC )
679      * However, wrong gradient check problem remains unsolved.
680      * New CPP options have been introduced for different
681        tapering schemes
682    o external_fields_load now part of differentiation list
683    o pressure needs multiple storing;
684      would be nice to have store_pressure at beginning or
685      end of forward_step, e.g. by having phiHyd global (5-dim.)
686      (NB: pressure is needed for certain cases in find_rho,
687      which is also invoked through convective_adjustment).
688    o recomputations in find_rho for cases
689     'JMD95'/'UNESCO' or 'MDJWF' are OK.
690    o #define ATMOSPHERIC_LOADING should be differentiable
691    o ini_forcing shifted to begining of initialise_varia
692    o Incorporating QNVS line search routines into MITgcm
693      (this is separate code, and therefore not under pkg)
694      lsopt/, optim/
695    o Updated verification/carbon/
696      - #define GM_VISBECK_VARIABLE_K
697      - GM_taper_scheme    = 'ldd97'    
698    
699    checkpoint46n_post
700    Merging from release1_p8:
701    o verification/natl_box:
702      updating new external_fields_load routine
703    o New package: pkg/seaice
704      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
705      The sea-ice code is based on Hibler (1979-1980).
706      Two sea-ice dynamic solvers, ADI and LSR, are included.
707      In addition to computing prognostic sea-ice variables and diagnosing
708      the forcing/external data fields that drive the ocean model,
709      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
710      The implied surface heat flux is then stored in variable
711      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
712      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
713      non-local transport term.  Because this call precedes model
714      thermodynamics, temperature under sea-ice may not be "exactly" at
715      the freezing point by the time theta is dumped or time-averaged.
716      N.B.: fairly large differences in accuracy occur across
717            different platforms/compilers; comparison between
718            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
719            generated output gives:
720       T           S           U           V
721      C D M    c        m  s        m  s        m  s        m  s
722      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
723      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
724      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
725    
726      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
727    o GAD:
728      - generated new common blocks to account for call of
729        same gad routines with differing traceridentities
730        (needed to modify tracerIdentity indices in GAD.h)
731      - generated separate common blocks for case useCubedSphereExchange
732        (Department of Futurology)
733      - parameter lists to gmredi_?transport: added tracerIdentity
734      - added new key indices to tamc.h
735    o external_fields_load:
736      - added this routine to TAF list
737      - needed to make some common blocks global and additional storing
738        along the same lines as exf package (checkpoint_lev?_directives.h)
739    o exf:
740      updated external forcing package
741      - bug fixes carried over from ecco-branch
742        (missing OBCS_OPTIONS.h in two routines)
743      - enable easy to use "no forcing".
744      - added exf I/O for atmospheric loading
745      - added exf I/O for runoff data
746      - transfered scaling between exf <-> MITgcm to exf namelist
747    o Adding new verification experiment global_with_exf.
748      This verification experiment is almost identical to the
749      global_ocean.90x40x15 experiment, except that it uses
750      the exf (and cal) package instead of the
751      external_fields_load routine (cf README file).
752    
753    checkpoint46m_post
754    o modified testscript to return -- when there are no lines of "%MON" output
755    o added new flag "quasiHydrostatic" for QH mode
756      and new routine quasihydrostaticterms()
757    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
758      New routine: mom_u_coriolis_nh()
759    o fixed sign of non-hydrostatic metric terms in u and v equations.
760      Depend on correct sign of gravitySign.
761    o added work.pc* to .cvsignore in aim directories using ifc
762    o introduced flag for controllin non-hydrostatic metric terms
763    o removed gravitySign from PARM04
764    o switched to g77/ifc from pgf77 in aim experiments
765    
766    checkpoint46l_post
767    o made convective adjustment work with pressure coordinates:
768     - changed the direction of k-loop in convective_adjustment.F for the
769       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
770     - adjusted the reference pressure k-index in convective_adjustment.F
771     - adjusted the convection condition in convect.F (in analogy to
772       calc_ivdc.F)
773     - convective_adjustment no longer computes anything on the halos
774     - removed the warnings about negative salinity from find_rho.F and
775       find_alpha.F; instead the new routine look_for_neg_salinity, called
776       at the beginning of find_rho, find_alpha, and find_beta, does a
777       check of the entire slice, if CPP-option
778       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
779    checkpoint46l_pre
780    
781    checkpoint46k_post
782    o fixed the verification/global_ocean.90x40x15 experiment:
783     - new bathymetry (the world according to A., JMC, and M.)
784     - new initial fields and forcing fields (*.bin files)
785     - new POLY3.COEFFS (for the next release one should switch to a full
786       equation of state: JMD95P or MDJWF)
787     - fixed several errors and redundancies in the data file
788     - experiment uses looped cells
789     - added matlab directory with diagnostic scripts for plotting of output
790    
791    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
792     - read AIM physics parameters from a file (data.aimphys)
793     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
794    
795    checkpoint46j_post
796    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
797    o move wVel computation at the end of the time step, in S/R integr_continuity
798    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
799    o update timeave pkg for wVel diagnostic.
800    checkpoint46j_pre
801    
802    checkpoint46i_post
803    o Clean up AIM package (and keep the results unchanged):
804      include CPP_OPTION and use IMPLICT NONE in all routines ;
805      declare all the variables _RL ; use _d 0 for all numerical constants.
806      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
807    
808    checkpoint46h_post
809    o cleaned up the use of rhoNil and rhoConst.
810      - rhoNil should only appear in the LINEAR equation of state, everywhere
811        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
812        and the dynamical equations are all divided by rhoConst
813    o introduced new parameter rhoConstFresh, a reference density of fresh
814      water, to remove the fresh water flux's dependence on rhoNil. The default
815      value is 999.8 kg/m^3
816    o cleanup up external_forcing.F and external_forcing_surf.F
817      - can now be used by both OCEANIC and OCEANICP
818    checkpoint46h_pre
819    
820     Added code to convert surface volume flux (fresh water) into
821     a mass flux when using P coordinates in the ocean (OCEANICP).
822     Note: It assumes you have set rho0=rhoConst=density of fresh water.
823    
824    checkpoint46g_post
825    o Include a new diagnostic variable phiHydLow for the ocean model
826      - in z-coordinates, it is the bottom pressure anomaly
827      - in p-coordinates, it is the sea surface elevation
828      - in both cases, these variable have global drift, reflecting the mass
829        drift in z-coordinates and the volume drift in p-coordinates
830      - included time averaging for phiHydLow, be aware of the drift!
831    o depth-dependent computation of Bo_surf for pressure coordinates
832      in the ocean (buoyancyRelation='OCEANICP')
833      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
834        Theta, Salinity, and Pressure in the parameter list. This routine is
835        presently contained in find_rho.F. This routine does not give the
836        correct density for 'POLY3', which would be a z-dependent reference
837        density.
838    o cleaned up find_rho
839      - removed obsolete 'eqn' from the parameter list.
840    o added two new verification experiments: gop and goz
841      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
842    checkpoint46g_pre
843    
844    checkpoint46f_post
845    o Enable tangent linear (forward mode) gradient checks:
846      - extended active file handling to g_... files
847      - added TANGENT_SIMULATION to theSimulationMode
848      - extended grdchk package accordingly
849    o added tangent linear setup in verification/carbon/code_ftl
850    o added adjoint setup in verification/front_relax/code_ad
851    
852    checkpoint46e_post
853    o Added new equation of state -> MDJWF
854      - EOS of McDougall et al., 2002, JAOT, submitted
855      - caveat: the equation of state is only valid for a smaller (more
856        realistic?) range of values than JMD95P/Z and UNESCO
857      - added masks to the calculation of pressure in store_pressure
858      - added more check values for density in check_eos (ini_eos.F), some of
859        the old check values are out of the range of the MDJWF-eos, so don't
860        expect perfect matches for those
861    checkpoint46e_pre
862    
863    checkpoint46d_post
864    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
865      'OCEANICP', also initialised field pressure correctly in ini_eos in the
866      case of pressure coordinates. eosType='JMD95Z' in
867      combination with buoyancyRelation='OCEANICP' now causes an error.
868    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
869      in find_alpha/beta.
870    checkpoint46d_pre
871    
872    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
873      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
874    
875    checkpoint46c_post
876    o Changes necessary for ocean in p-coordinates
877     -  Added new buoyancy relation = 'OCEANICP'
878     -  Added new parameters = gravitySign (this used to be contained inside
879        the factor dRdZ which I added when we first switched to R coordinates).
880     X GM/Redi is not compatible (yet)
881     X bottom drag and no-slip need to be debugged.
882    checkpoint46c_pre
883    
884    checkpoint46b_post
885    o Added new equation of state -> JMD95Z and JMD95P
886      - EOS of Jackett and McDougall, 1995, JAOT
887      - moved all EOS parameters into EOS.h
888      - new routines ini_eos.F, store_pressure.F
889    o Added UNESCO EOS, but not recommended because it requires
890      in-situ temperature (see JMD95)
891    o Modified formatting for knudsen2.f in utils/knudsen2 and added
892      unesco.f to be used with POLY3
893    checkpoint46b_pre
894    
895    checkpoint46a_post
896    o Added (atmospheric) pressure loading
897      - new field in FFIELDS.h, etc...
898      - new cpp flag ATMOSPHERIC_LOADING
899    o Changed hFacC to _hFacC in calc_phi_hyd.F
900    o Added SHORTWAVE_HEATING to some files for consistency
901    checkpoint46a_pre
902    
903    checkpoint46
904    further merges from release1_p5
905    o new ctrl package
906      - adopted from ECCO environment to enable optimization
907      - added Eliassen Palm fluxes to controls
908    o added Eliassen Palm flux controls to gradient check package
909    o cost package
910      - Compatible with new ctrl package
911      - added Eliassen Palm cost hooks
912      - modif's of existing cost functions
913    o Adjoint-related bug fixes in kpp:
914      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
915      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
916    o autodiff package
917      - flow directives:
918        + new for S/R do_the_model_io
919        + enhanced for S/R checkpoint
920        + new gmredi.flow
921      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
922        disable adcommon.h/g_common.h by default.
923      - fixed problem for adjoint of global_max
924    o modified verification/carbon/
925    o New setup for adjoint of global_ocean
926    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
927    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
928    o incorporated hooks for sponge layer code (external_forcing.F)
929    
930    checkpoint45d_post
931    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
932    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
933      (affects plume_on_slope "cg2d" output)
934    o add new parameter deltaTfreesurf for free-surface time stepping
935    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
936    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
937    o change phiMin in exp1 (to agree with documentation)
938    o add new flags:
939     - T,S forcing inside/outside Adams-Bashforth
940     - turn off temp,salt advection and/or forcing
941     - for each tracer, define internal flag for multiDimAdvection & A-B
942    o monitor: change definition of KE to check conservation of Energy
943    
944    checkpoint45c_post
945    o Removed f90 comments ("!")
946    o Modified initialisations to enable exf package for MITgcm
947      (without invoking ECCO_PACKAGE).
948    o modifications to gradient check package (Martin Losch)
949      - enable centered differences
950      - modified format of standard output
951    
952    checkpoint45b_post
953    o cleaned exchange calls in cg2d
954    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
955    o included CPP option SINGLE_LAYER_MODE in thermodynamics
956      to configure barotropic setup (Martin Losch)
957    o moved some initialisations within bi,bj loop in dynamics
958      (TAF flow dependency)
959    o in initialise_varia, moved call packages_init_variables
960      before convective_adjustment_init
961      (corresponding adjustment of TAF tape initialisation).
962    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
963    
964    checkpoint45a_post
965    o compute Rho over the whole domain (extend iMin,jMin indices)
966    o specific exchange for X-slice domain (case Ny=1)
967    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
968    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
969    
970    checkpoint44h_post = checkpoint45
971    o Fix to restore differentiability:
972      place at which packages_init_variables is called in
973      initialise_varia is crucial for reverse control flow.
974    o modifications in GMRedi to enable stable adjoint
975      (corresponding modif's in thermodynamics, dynamics)
976    o added missing hook for sponge layer code in external_forcing
977    o modified test cost functions
978    o storing in gad_advection (plus removal of write(0,*)!
979    o missing headers TR1.h added in convective_adjustment routines
980    o errorMessageUnit set non-equal zero in eeboot
981      (conflict on some platforms, e.g. IBM SP3)
982    o modified carbon verif.
983    
984    checkpoint44h_pre
985    o vertical grid option: allow to put the Interface at the middle between
986      2 cell-centers ; replace delZ in pkg/kpp by drF.
987    o GM Advective form: Tracers are advected using the residual transport (=
988      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
989    
990    checkpoint44g_post
991    o fix surface correction term in multiDimAdvection (affects plume_on_slope
992      results) ; ifdef missing in thermodynamics.F
993    
994    checkpoint44f_pre,checkpoint44f_post
995    o added PTRACERS package
996      This allows an arbitrary number of passive tracers to be integrated
997      forward simultaneously with the dynamicaly model.
998      + Implemented so far:
999        - basic forward algorithm (time-stepping, advection, diffusion, convection)
1000        - I/O and checkpointing
1001        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
1002      + Not implemented so far:
1003        - KPP
1004        - OBCS
1005      + No specific example supplied (yet) but global_ocean.90x40x15 has the
1006        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
1007        line in data.pkg.
1008      + This package is disabled by default since it increases storage.
1009    
1010    
1011    o testscript: added -cleanup option
1012    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
1013                 b) enable to filter 2D fields.
1014    
1015    checkpoint44e_pre,post
1016    o re-wrote convective adjustment to use pre-calculated weights
1017      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
1018      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
1019      Original calls to convect() still in place.
1020    
1021    chkpt44d_pre,post
1022    o added missing EXCLUDE_MONITOR flags
1023    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
1024      (incompatible typ in MIN/MAX expressions caused problems
1025      on IBM SP3)
1026    o in genmake added variable MAKEDEPEND
1027      plus resetting for case SunOS
1028    o added timer_stats.c routine for IBM SP3
1029    o removed variables in dynamics
1030    !!! I forgot to create tag chkpt44d_pre !!!
1031    !!! But chkpt44d_pre = chkpt44c_post    !!!
1032    
1033    o real fresh water flux implemented with non-linear free-surface.
1034    
1035    chkpt44c_pre,post
1036    o few fix (mask in shap_s2, EmPmR in external_field_load,
1037      USE_NATURAL_BCS in solve_for_P);
1038    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
1039    
1040    checkpoint44b_pre/_post
1041    o merge of relevant stuff from the ecco-branch:
1042      - genmake: removed $S64 overwrite for case SunOS
1043      - pkg/exf: update and corrections for field swapping and obcs
1044      - pkg/ecco: parameter lists for the_model_main, the_main_loop
1045                  harmonized between ECCO and MITgcm
1046      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
1047                      updated checkpointing_lev... lists for obcs
1048      - model/src: minor changes in forward_step, plot_field
1049                   added directive for divided adjoint in the_main_loop
1050      - pkg/mdsio: added mdsio_gl_slice
1051    
1052    o check parameters & config (chkpt44a_pre,post)
1053    o OBC and NonLin_FrSurf.
1054    
1055    checkpoint44
1056    o fix bug in mom_vi_del2uv
1057    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
1058    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
1059    o update AIM experiments (NCEP input files)
1060    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
1061    o added some stuff for AD
1062    
1063    checkpoint43
1064    o added two new advection tests
1065    o added global 4x4 degree ocean test
1066    o added test of H&S94 with free surface on cube
1067    o some final mods for gradient check, adjoint,...
1068    
1069    checkpoint42
1070      Fixed AD-related problems:
1071    o Store directives up-to-date with re-arranged Adams-Bashforth
1072      (mainly thermodynamics.F)
1073    o New store directives for multi-dim. advection schemes
1074      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
1075      * new common block and key passkey
1076      (mainly gad_advection.F)
1077    o Modified store directives for split of dynamics/thermodynamics
1078      for the case ALLOW_KPP
1079    o Cleaned argument list for timestep_tracer.F
1080    
1081    checkpoint41
1082    o re-formatted/added comments in prologues of key subroutines
1083      to work with protex
1084    
1085    checkpoint40
1086    o moved calc_gs, calc_gt and calc_tr1 back to model/src
1087    o added FLT (floats) package from Arne along with demo. experiment
1088    o re-arranged Adams-Bashforth scheme for tracers to allow easier
1089      implementation of forward-in-time forcing terms
1090    o more mods for non-linear free-surface including new variable
1091    o modified multi-dim method to work on cube
1092    o bug fix in KPP (from DM)
1093    
1094    checkpoint40pre9
1095    o added DST advection schemes
1096    o fix MPI bug on SGI's
1097    o modifications for non-linear free-surface
1098    o fixed conditionals for fixed flow/passive tracer only mode
1099    o added tension/strain form of stress tensor
1100    o changes to commenting of arguments for TAF/TAMC
1101    o added/updated many matlab scripts
1102    o added multi-dimensional advection method for tracers
1103      
1104    checkpoint40pre8
1105    o new package rw/
1106      Added method for dumping intermediate local arrays:
1107      mdsio_writetile - same as mdsio_writefield except works from inside
1108                        bi,bj loop
1109      mdsio_writelocal - same as mdsio_writetile except works for local
1110                         arrays
1111      write_local_r? - higher-level wrapper for mdsio_writelocal
1112      Controlled by diagFreq. Defaults to zero (ie. no dumps)
1113      Example given at end of mom_vecinv.F that dumps some local arrays.
1114    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
1115      control flux-form versus vector invariant code.
1116      Switch is runtime flag vectorInvariantMomentum (defaults to false)
1117      or genmake -DISABLE ...
1118    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
1119      (additional storing is now needed for case vecinv;
1120      currently nothing implemented to switch this storing off
1121      in case fluxform is used since no CPP flag available).
1122    
1123    checkpoint40pre7
1124    o bug fix in dynamics.F
1125      calc_viscosity called before k=1,Nr loop.
1126    o added some #ifdef's ALLOW_PASSIVE_TRACER
1127    o cleaned initialisations in ctrl_map_ini
1128      related to TAF
1129    
1130    checkpoint40pre6
1131    o split dynamics into thermodynamics & dynamics
1132    o corresponding split of calc_diffusivity into
1133      calc_diffusivity, calc_viscosity
1134      (kpp_calc_diff, kpp_calc_visc).
1135    o Added diffkr, kapgm to control variables
1136    o bug fix in gmredi_slope_limit for ldd97
1137    
1138    checkpoint40pre5
1139    o proper initialization of Adams-Bashforth time stepping
1140      + uses forward step for very first step of model (iter=0)
1141    o re-generated *all* output since almost all output is modified by this
1142      change (sorry but we've been putting this one off for about 2 years)
1143      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
1144        *not* regenerated since they are already out of date and I don't
1145        want to create the impression that they are suddenly working.
1146    o removed KAP stuff for DEC's
1147    o modified/added many .cvsignore files in */code and */input
1148    o added new expt "solid-body.cs-32x32x1"
1149      + this uses an alternative form of ini_curvilinear_grid.F which
1150        is not necessarily any better than the current one...
1151    
1152    checkpoint40pre4
1153    o added re-initialisations of utrans,vtrans,rtrans in
1154      calc_common_factors which are crucial for TAF.
1155    o extended iMin,jMin range for calc_common_factors,
1156      calc_diffusivity
1157    o added option ALLOW_PASSIVE_TRACER
1158    o a few minor updates and fixes
1159    
1160    checkpoint40pre3
1161    o created calc_gtr1.F for gad package
1162    o split the_main_loop and re-introduced forward_step
1163    o some recomputations of nIter0 for TAMC
1164    
1165    checkpoint40pre2
1166    o Updated to latest branch of AJA, JMC
1167    o Added gradient check package
1168    o Added routines for passive tracer handling
1169    o Added carbon sequestration sensitivity experiment
1170    
1171    checkpoint39
1172     o Modifications and fixes to support TAMC
1173       (mainly missing or wrong directives)
1174     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1175       in addummy_in_stepping
1176     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1177     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1178     o Included following packages:
1179       cal: calendar
1180       exf: external forcing
1181       ecco: essential routines to control use of cal, exf
1182             (NB: this is not the full ECCO environment)
1183     o disabled some packages by default in genmake
1184    
1185    checkpoint38
1186     o see notes_c37_adj.txt
1187     o corrected wrong layer index in external_forcing_t
1188     o replaced the_main_loop/forward_step by the_main_loop
1189     o removed forceoutput from write_state
1190       (replaced criteria for initial/final state)
1191     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1192    
1193    checkpoint37
1194     o mdsio.F routine split and packaged in pkg/mdsio
1195       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1196        used unless genmake -disable=mdsio)
1197     o allow a more precise surface-geopotential gradient for the atmosphere
1198       taking into account the change in space of Alpha (=1/rho) at the surface.
1199     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1200       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1201     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1202       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1203       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1204     o Time-Average diagnostics defined as a pseudo package "timeave".
1205     o pickup files : old pickup (before c35) did not work with new code (c35
1206       and after) unless activating 2 commented lines in initialise-varia.
1207     o Non-Hydrostatic pickup file Pb fixed.
1208     o bug with Rigid-lid version (since c35) fixed.  
1209    
1210    checkpoint36
1211     o implement Crank-Nickelson barotropic time-stepping
1212     o recover Time-Average diagnostics
1213     o fix Pb in checkpoint (PR#19)
1214     o AIM become a standard package ; clean unused CPP_kees
1215    
1216    checkpoint35
1217     o subtantial rewrite of dynamics.f
1218     o allows staggered time-stepping
1219     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1220     o added bottom drag (linear + quadratic)
1221    
1222    checkpoint34
1223     o Modified exchange routines for correct reverse simulation.
1224     o Added verification output to comply with bug fix in impldiff.F
1225       as of c33 (exp2, natl_box).
1226     o Corrected store directives in dynamics.F
1227     o Corrected array boundaries in impldiff.F
1228     o Corrected array dimensions in gmredi.
1229       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1230     o Added routine GLOBAL_SUM_INT to global_sum.F
1231     o Added mdsio_gl.F for ECCO purposes.
1232    
1233    checkpoint33
1234     o Fixed bug in lower BC in impldiff.F
1235     o Fixed confusion about units of forcing arrays in FFIELDS.h
1236       namely Fu,Fv,Qnet,Qsw,EmPmR:
1237       - Removed verification/natl_box/code/external_fields_scale.F
1238         (did not differ from that in model/src)
1239       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1240         (see FFIELDS.h for description)
1241       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1242         kpp_calc.F and kpp_transport_t.F
1243       - Removed model/src/external_fields_scale.F and calls to it
1244       - verification/natl_box uses flux data with "atmospheric" sign so
1245         a special version of external_fields_load.F is used to
1246         change the data as it's read in. This way, the arrays
1247         have the right units and signs at all times tha a user could
1248         possibly use them.
1249     o Corrected genmake to delete a temporary file during configuration
1250    
1251    checkpoint32
1252     o Scaling of forcing fields moved from external_forcing.F to
1253       external_fields_scale.F, called directly after loading fields.
1254     o Surface relaxation terms added to surface tendency fields in
1255       extra subroutine.
1256     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1257       fields.
1258     o Changes in GMRedi to comply with packaging structure.
1259     o Modifications and bug fixes in KPP package.
1260     o Verification experiment for KPP added (verification/nat_box/)
1261    
1262    checkpoint31
1263     o Packages interface brought in line with defined standard
1264       -> new routines packages_...F
1265       -> changes in initialise_fixed.F, initialise_varia.F
1266       -> enables initialisation interface for ECCO package
1267     o Rescaling of external forcing fields immediately after read
1268       (removed from external_forcing.F)
1269       -> new: surface_fields_scale.F
1270       -> affects ini_foorcing.F, external_fields_load.F
1271     o Computation of surface tendencies before tendency updates.
1272       -> new: external_forcing_surf.F
1273     o Change of variable names useGMRedi, useKPP, useECCO
1274     o Further changes in dynamics.F, impldiff.F for TAMC
1275     o Tested for experiments 0, 2, 4.
1276       - not yet tested for GMRedi.
1277       - not yet tested for KPP.
1278    
1279    checkpoint30
1280     o Updates for OBCs
1281     o New experiment for test OBCs (internal_wave)
1282     o New output.txt in verification/exp4/results/
1283     o Updates for KPP: calculation of viscosity corrected, new variables
1284       kpp_dumpFreq and kpp_taveFreq
1285     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1286       and entry for T90 in genmake
1287    
1288    checkpoint29
1289     o packaged KPP and GM/Redi
1290    
1291    checkpoint28
1292     o Corrected initialization of hFacMin for difference vertical coordinates
1293     o Modified calculation of partial cell thickness to more robust algorithm
1294     o config_summary.F: replaced write_1D_... by write_0D_...
1295       read_write.F: added subroutines write_0D_...
1296     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1297       included some initialisations required for TAMC.
1298     o routine calc_isoslopes: modified sqrt computation to make it
1299       differentiable for zero argument.
1300     o routines dynamics, impldiff:
1301       included store directives and tape key computations required for TAMC.
1302     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1303    
1304  checkpoint27  checkpoint27
1305   o fixed calc_isoslopes() to so that cancellation of terms in tensor   o fixed calc_isoslopes() to so that cancellation of terms in tensor
1306     formulation works properly with variable resolution.     formulation works properly with variable resolution.

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