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revision 1.7 by adcroft, Mon Jun 22 16:24:50 1998 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
1305     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1306       formulation works properly with variable resolution.
1307     o restructured the calling tree between the_model_main() and dynamics()
1308     o split initialise() into initialise_fixed() and initialise_varia()
1309     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1310       in new routine ini_psurf()
1311    
1312    checkpoint26
1313     o moved some #ifdef in optional routines to encompass everything
1314       except the argument declarations. This was using up some memory.
1315     o fixed macros like _ADT to work with both versions of Linux cpp
1316     o cleaned up some unused and uninitialized variables
1317       (helps when debugging with strict compile options)
1318     o split up CPP_EEOPTIONS.h into options and macros
1319       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1320     o patch for 2 processor JAM mode
1321    
1322    checkpoint25
1323     o updates for OBCs and NH
1324     o dramatically reduced memory usage
1325     o added "JAM" routines for use on Artic network
1326     o parameterization of convection by implicit vertical diffusion
1327     o added a diagnostic of convective index
1328     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1329       (this is was partly for OBCs and NH but also in anticipation of
1330        an explicit free-surface option)
1331     o initial state input files for U and V
1332    
1333    checkpoint24
1334     o Removed some spurious "REAL"s
1335     o Updated KPP to latest version from JPL
1336     o Added a COS(latitude) in horizontal viscosity
1337    
1338    checkpoint23
1339     o Added del^4 diffusion for salt and temperature
1340     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1341    
1342    checkpoint22
1343     o Made many small changes: implicit none, format(i5), etc...
1344     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1345    
1346    checkpoint21
1347     o Introduced new I/O package that supports direct-access records (mdsio.F)
1348     o Split-up mid-level I/O routines
1349     o Updated input data for experiments 0,1,2,4 and 5
1350     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1351    
1352    checkpoint20
1353     o Tidied up open-boundaries some more
1354     o Added non-hydrostatic code
1355     o Fixed some input data
1356     o Modified MPI start-up to work in "coupled" context.
1357    
1358    checkpoint19
1359     o Tidied up directory structure for verification experiments.
1360     o Added new code for open boundaries.
1361     o Corrected advective terms near boundaries.
1362     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1363     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1364     o Split default parameters out of ini_parms.F into set_defaults.F.
1365    
1366    checkpoint18
1367     o Further changes for optional code generation with
1368       CPP - ugh!
1369    
1370    checkpoint17
1371     o Beginning to incorporating modularity
1372       for supporting atmos. and ocean configs.
1373     o Small changes for TAMC complinace
1374     o New ultra simple test case. Barotropic box
1375       configuration "exp0".
1376    
1377    checkpoint16
1378     o Minor changes to exchange routines to support
1379       accumulation in reverse mode. Adjoint of an
1380       assignment is an addition.
1381     o Changes to support compilation by TAMC (LR(1)
1382       syntax) and by g77 under Linux ( 72 character
1383       limit ).
1384    
1385    checkpoint15
1386     Rewrote exchange routines to allow
1387     o General tile <-> tile connectivity.
1388     o TAMC reverse mode flag ( is this really needed? )
1389     o Variable width overlap and exchange region widths.
1390     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1391       shmput/shmget, VIA, SYSV shmem and every other cool
1392       communication method.
1393    
1394    checkpoint14
1395     Consistent isomorphism chages made. These allow dynamical core
1396     to support both pressure and meters as a vertical coordinate.
1397    
1398    checkpoint13
1399     Release which corrects global_max problem and a couple
1400     of KGM time-averaging diagnostic errors. Also contains
1401     a double-gyre experiment setup as well as the baseline
1402     4 degree global template. The double gyre template is
1403     organised to allow it to be applied automatically to
1404     the baseline configuration.
1405    
1406    branch-point-rdot
1407     A few tidy-ups have been made bt the real point of this
1408     check-point (excuse the pun) is to allow a branch to be
1409     made for the purposes of adding the rDot alterations.
1410     I don't want to commit the rDot to the main-trunk until
1411     we've actually tested it...
1412    
1413    checkpoint12
1414     Tidy up and added generic genmake script (formerly
1415     configure script).
1416     Released to testers.
1417    
1418    checkpoint11
1419     Re-arranged initialise() and introduced ini_vertical_grid()
1420     and ini_masks_etc().
1421    
1422    checkpoint10
1423     Introduced the configure script.
1424     Separated out the diags package.
1425     Added template for writing time-averages of tile/intermediate quantities.
1426     Updated SIZE.h in exp2 and made the data big-endian.
1427    
1428  checkpoint9  checkpoint9
1429   MPI fix. Filename changes (meta/data). salbin*y stuff.   MPI fix. Filename changes (meta/data). salbin*y stuff.
1430   General tidy-up.   General tidy-up.

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