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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.172 by heimbach, Fri Jul 18 21:16:49 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint51d_post
7    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
8    o modif's to restore TAMC compatibility
9      - avoid "_d" constructs in PARAMETER declarations
10      - avoid interrupting lines by comment lines
11    o Use cluster local disks for purely local I/O
12      vs. globally visible disks needed for ctrl stuff
13      (merged from ecco-branch)
14      - new active_file_loc... and mdsio_..._loc routines
15      - affected packages: autodiff, ctrl, grdchk, mdsio
16    
17    checkpoint51c_post
18    o introducing integer flag debugLevel
19      - debLevZero: suppress all output
20      - debLevA: standard
21      - debLevB: equivalent to current debugMode=.TRUE.
22    o introducing pathname variable mdsioLocalDir for mdsio
23      that can be specified at runtime
24      (relevant for cluster I/O to local disk)
25    `
26    >>>checkpoint51b_post
27    adjoint of ptracers
28    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
29    o extended state in checkpoint_lev?, etc.
30    o alternative ctrl/cost with tr1 or ptracer
31    o new comlev1_bibj_ptracers
32    o new ptracers.flow
33    o made ptracers_forcing same as external_forcing_s
34    o added verification for adjoint with ptracers
35      - adm. grdchk fail so far
36      - tlm. grdchk OK
37      - checked tapelev/comlev recomputations: OK
38    <<<checkpoint51b_pre
39    
40    checkpoint51a_post
41    o added code for biogeochemistry package
42      - new pkgs: dic, gchem
43      - new subroutine in ptracers
44    o modify code for biogeo packages
45      - in model/src and pkg/ptracers
46    
47    checkpoint51
48    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
49      - autodiff, ctrl, exf, grdchk, seaice
50      kept separate packages
51      - cost, ecco, obcs
52    o updating verification/internal_wave, verification/lab_sea
53      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
54    
55    checkpoint50i_post
56    o Preparing next differentiable checkpoint and sync
57      of MAIN vs. ecco-branch
58      - 1st step: this one is differentiable
59      - 2nd step: next(! not this) checkpoint will have updated packages
60                  from ecco-branch)
61    
62    checkpoint50h_post
63    o new package "land": provide surface BC for AIM.
64    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
65    o AIM: use true log-P extrapolation for near surface temp (= as in
66        F.Molteni paper) ; update aim.5l_cs output.
67    o New variable in PARM03 for more flexible pickups
68    o somewhat cleaned package initialisation sequence for
69      ctrl/ cost/ ecco/ in packages_... routines
70    
71    checkpoint50g_post
72    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
73      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
74      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
75        made the default because of faster convergence than ADI
76    
77    checkpoint50f_post
78    o exf totally restructured
79      - replaced all exf_set_ routines by one generic exf_set_gen.F
80        and made sure it's still differentiable
81      - split exf_getffields.F into new exf_bulkformulae.F
82      - exf_inscal_/exf_outscal_ suffixes consistent with field names
83      - updated adjoint/makefile and relevant verif. accordingly
84    
85    checkpoint50f_pre
86     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
87          + change Evap over land. (update aim.5l_cs output)
88     o added missing .cvsignores and made uniform across expts
89     o changed configuration of tidal_basin_2d expt
90     o added pkg/debug functions for tracing code in fatal crashes
91     o tidied pkg/monitor to use MONITOR_OPTIONS.h
92     o new fn in pkg/monitor to stop model if solution grows too big
93     o removed lots of single quotes from comments
94    
95    checkpoint50e_post
96    o make KPP work with PTRACERS
97     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
98       nearly a copy of kpp_transport_s
99     - there is no analogue to SurfaceTendencyS, so I have to use
100       gPtr(of the surface layer) instead
101    o add a new platform SunFire+mpi (SunFire 15000) to genmake
102    checkpoint50e_pre
103    
104    checkpoint50d_post
105    o change kpp output from multiple-record state files to single-record state
106      files analogous to write_state.F
107    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
108      analogous to the cg2d-related output.
109    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
110      so that writing to internal file fn (with length 512) fails.
111    checkpoint50d_pre
112    
113    checkpoint50c_post
114    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
115    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
116    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
117    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
118    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
119    
120    checkpoint50c_pre
121    Merging from release1_p13:
122    o bug fix for pkg/seaice dynamic solver
123    o Added SEAICE_initialHEFF to pkg/seaice
124    
125    checkpoint50b_post
126    o store u*,v* in gU,V instead of in guNm1,gvNm1
127    o in order to put the momForcing out of the Adams-Bashforth:
128      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
129      to timestep.F
130    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
131    o re-generate output for highly sensitive test-exp:
132       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
133    
134    checkpoint50b_pre
135    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
136    o corrected CPP option mismatch in exf_Bulk... functions for case
137      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
138    
139    checkpoint50a_post
140    o Bug fix for merging between c50 and KPP.
141      ikey was passed from thermodynamics to kpp_calc via
142      common block rather than being recomputed in kpp_calc,
143      in contradiction with new key itdkey.
144      New key ikppkey created, and tamc.h headers updated.
145    
146    checkpoint50
147    - 2nd step of merge with ecco-branch:
148      merge changes in ecco-branch back into main trunk
149    - bug fix in find_alpha
150    - more storing in gmredi_calc_tensor.F, kpp_routines.F
151    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
152    - merged some sliced AD support routines
153    
154    checkpoint49
155    merged from ecco-branch:
156    o exf:
157      - Enable initialisation of forcing fields to constant
158        (runtime) values.
159      - in exf_getffields.F
160        Reduce i-/j-loop to interior domain, discarding overlaps.
161        That also fixes wrong TAF-key computations for key_1, key_2
162        with bulf formulae.
163      - exf_init.F modify #ifdef for exf_init_evap
164      - exf_getffieldrec.F, ctrl_getrec.F
165        The following INT-usages are not safe:
166          fldsecs  = int(fldsecs/fldperiod)*fldperiod
167          fldcount = int(fldsecs/fldperiod) + 1
168        and were modified.
169    o autodiff: checkpoint_lev...
170      - updated storing for bulk formulae (some arrays were missing)
171      - added state for seaice package
172      - synchronized with main branch
173    o DIVA:
174      Modif.s in
175      - the_main_loop.F
176      - the_model_main.F
177      and added cost_final_restore.F cost_final_store.F
178      o With these changes, it is possible to fully separate
179        the first forward run to compute the cost function (mdthe_main_loop)
180        and adjoint runs over individual DIVA intervals (adthe_main_loop)
181        into separate model executions.
182        This enables better tuning of DIVA to given queue sizes.
183      o Loss of cost function value in consecutive DIVA runs is
184        fixed by storing to 'costfinal' file.
185      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
186        beginning/end of adjoint integration is accounted for.
187      The current changes apply to TAF-1.4.26.
188      TAF has one remaining bug, requiring one manual change
189      (see MITgcm manual).
190    o cal: synchronized between MAIN and ecco-branch
191    
192    checkpoint48i_post
193    o Changes to restore differentiability of code w.r.t. previous tag
194      (mostly adding new routines to make list and replacing
195      pressure by totPhiHyd).
196    o Updated and merged grdchk package
197      - has both ADM and TLM checks
198      - works for single- and multi-proc.
199      - output cleaned
200      - worked successfully for parallel DIVA
201    o genmake:
202      - Adding -platform=SP4
203      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
204    o Modif. for DIVA:
205      ctrl_unpack should not be called in intermediate DIVA interval.
206      (similar thing would apply for active files such as
207      tbar, sbar, psbar, which should not be reinitialised;
208      only relevant for ecco-branch)
209    
210    checkpoint48h_post
211    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
212    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
213    o Added SEAICE_initialHEFF to pkg/seaice
214    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
215    
216    checkpoint48g_post
217    --- EOS:
218    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
219      store total Potential in totPhyHyd for diagnostics & EOS.
220    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
221    --- Pressure/geopotential gradient:
222    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
223    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
224      ( changes results of global_ocean_pressure )
225    o NLFS + z-coord.: add eta*Rho' contribution.
226    o accurate phiHyd when using interface-W at the middle between 2 centers
227     ( changes results of ideal_2D_oce )
228    o includes r* 2nd term in potential gradient.
229    
230    checkpoint48f_post
231    Merging from release1_p12:
232    o Modifications for using pkg/exf with pkg/seaice
233      - improved description of the various forcing configurations
234      - added basic radiation bulk formulae to pkg/exf
235      - units/sign fix for evap computation in exf_getffields.F
236      - updated verification/global_with_exf/results/output.txt
237    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
238      (SBO) core products, including oceanic mass, center-of-mass,
239      angular, and bottom pressure (see pkg/sbo/README.sbo).
240    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
241      to avoid negative values in shallow regions.
242      - updated verification/natl_box/results/output.txt
243      - updated verification/lab_sea/results/output.txt
244    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
245    o Added useSingleCpuIO option (see PARAMS.h).
246    o Updated useSingleCpuIO option in mdsio_writefield.F to
247      work with multi-field files, e.g., for single-file pickup.
248    o pkg/seaice:
249      - bug fix in growth.F: QNET for no shortwave case
250      - added HeffFile for specifying initial sea-ice thickness
251      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
252    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
253      kpp_transport_t.F, forward_step.F, and the_main_loop.F
254    o pkg/seaice:
255      - adjoint-friendly modifications
256      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
257    
258    checkpoint48e_post
259    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
260    o dynamics: change definition of computational domain & adapt mom_fluxform
261      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
262    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
263        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
264        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
265        global_ocean.90x40x15 global_with_exf global_ocean_pressure
266        inverted_barometer solid-body.cs-32x32x1
267      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
268    
269    checkpoint48d_post
270    o in preparation for r*:
271     a) use pre-computed gradient of hydrostatic potential:
272        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
273     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
274        => affects results of glob_oce_pressure (different truncation error)  
275      update output.txt of ideal_2D_oce & global_ocean_pressure
276    
277    checkpoint48d_pre
278    o in preparation for r*:
279      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
280      pass the 2 comp. of the grad. as arguments to momentum S/R.
281      but for the moment, only used if it does not change the results.
282    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
283    
284    checkpoint48c_post
285    Modifications in treatment of initial flux forcing controls
286    to avoid extra storing of flux fields.
287    
288    checkpoint48c_pre
289    o Added tidal_basin_2d experiment (currently 1D!)
290    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
291    
292    checkpoint48b_post
293    o r* coordinate added in #ifdef NONLIN_FRSURF block.
294     (modification to pressure gradient not yet implemented)
295    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
296      (for U & V) that are used for vertical advection of momentum.
297    
298    checkpoint48a_post
299    o In preparation for r*, use temp. array to compute vertical transport
300       in flux-form momentum pkg. => change results of few test-exp.
301      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
302                        lab_sea, natl_box & plume_on_slope
303    
304    checkpoint48
305    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
306    
307    checkpoint47j_post
308    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
309    o moved adexch from forward_step to addummy_in_stepping
310    o added exch in ctrl_map_...
311    o aveFreq.=0. at end of cost_final to avoid overwrite in
312      reverse checkpointing loop
313    o Yet more changes in gmredi:
314      * adgmredi_calc_tensor
315        avoiding all recomputation of gmredi_slope_limit
316      * adgmredi_x/y/rtransport
317        added flag for excessive storing to avoid recomp. of
318        u/v/rtans, dTdx/y/z
319        -> this is not really necessary and very memory-consuming
320      * adgmredi_slope_psi:
321        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
322      * gmredi_slope_limit
323        re-activated full calculation of taperfct for case 'ac02'
324    o updating verification/ adjoints of carbon, global_ocean.90x40x15
325    
326    checkpoint47i_post
327    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
328    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
329      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
330    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
331    o gmredi: fix few bugs.
332    
333    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
334    This will be a good checkpoint to plug into the ecco-branch.
335    o few modif.'s to get latest version adjointed
336      (mainly kick out code in ini_linear_phisurf)
337    o modif's to run adjoint with exactConserv
338    o case GM_BOLUS_ADVEC should be cleaned
339      S/R gmredi_slope_psi should be cleaned
340    o verification/carbon now has exactConserv=.TRUE.
341    
342    checkpoint47g_post
343    o time-average AIM output: becomes independent from statvars time-average
344      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
345    o After TAF bug fix:
346      Tested adjoint of gmredi package.
347      Tests were done with checkpoint47 rather than with latest
348      checkpoint47f_post since the latter is broken for the adjoint
349      verification/carbon/ contains both ADM and TLM gradient checks.
350    Here they are, before they get changed/lost/stolen.
351    Mostly modif.'s to fix numerical sensitivities.
352    Gradient checks OK for
353    - GM_taper_scheme:
354      * clipping
355      * ac02
356      * linear
357      * glw91
358      * dm95
359      * ldd97
360    - GMREDI_OPTIONS:
361      * GM_VISBECK_VARIABLE_K
362      * GM_NON_UNITY_DIAGONAL
363      * GM_EXTRA_DIAGONAL
364      * GM_BOLUS_ADVEC
365    in conjunction with data.gmredi parameters to be checked in
366    in a few minutes under verification/carbon/code/
367    
368    checkpoint47f_post
369    Merging from release1_p10:
370    o modifications for using pkg/exf with pkg/seaice
371      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
372        and SEAICE_EXTERNAL_FLUXES
373      - pkg/exf CPP options EXF_READ_EVAP and
374        EXF_NO_BULK_COMPUTATIONS
375      - usage examples are Experiments 8 and 9 in
376        verification/lab_sea/README
377      - verification/lab_sea default experiment now uses
378        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
379    
380    checkpoint47e_post
381    o created a tag prior to creating a branch
382    
383    checkpoint47d_post
384    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
385      at the bottom boundary had an erroneous half slip boundary condition
386    o added bottom drag and no slip boundary condition capabilities to
387      oceanic pressure coordinates code
388    o added new verification experiment global_ocean_pressure, this experiment is
389      also described in the tutorial section of the manual
390    checkpoint47d_pre
391    
392    checkpoint47c_post
393    o Added a verification experiment for a global cubed-sphere ocean run
394      -  verification/global_ocean.cubed32x32x30
395      -  uses pkg/therm_seaice and pkg/bulk_forcing
396    
397    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
398    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
399      when using P-coordinate; only implemented for atmospheric config.
400    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
401      NOTES: requires option NONLIN_FRSURF to be "#define".
402    o update advect_xz/results/output.txt (left from checkpoint44g_post)
403    
404    checkpoint47b_post
405    Merging from release1_p9:
406    o pkg/seaice
407      - removed GOTO's and added taf directives
408      - double precision constants to reduce the g77 (Linux)
409        to F77 (SGI) differences reported in release1_p8
410    o tools/genmake
411      - added SGI options
412    o verification/testscript
413      - updated to that of checkpoint47a_post
414    o verification/global_ocean.90x40x15/input/eedata
415      - modified for SGI f77 compatibility
416    o verification/lab_sea
417      - added description of sea-ice model
418      - added missing matlab routines
419      - added test of thermodynamics parallelization
420    
421    checkpoint47a_post
422    o new pkg: aim_v23
423     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
424       for now, keep the same surface forcing as before.
425     - Part-Cell implemented into AIM; check that Heat & Water are conserved
426     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
427     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
428    o add diagnostic of surface correction term in monitor output
429    
430    o bulk_force and therm_seaice
431    - Two packages:  bulk_force (Bulk forcing)
432      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
433    - Earlier integration from Stephaine Dutkiewicz
434      and Patrick Heimbach.
435    - Two ifdef statements for compile time,
436       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
437    
438    checkpoint47
439    differentiable version of checkpoint46n_post
440    o bug fix in quasihydrostaticterms
441    o * "clean" adjoint code (in terms of extensive recomputations)
442        can now be obtained for all GMREDI options (i.e. for
443        - GM_VISBECK_VARIABLE_K
444        - GM_NON_UNITY_DIAGONAL
445        - GM_EXTRA_DIAGONAL
446        - GM_BOLUS_ADVEC )
447      * However, wrong gradient check problem remains unsolved.
448      * New CPP options have been introduced for different
449        tapering schemes
450    o external_fields_load now part of differentiation list
451    o pressure needs multiple storing;
452      would be nice to have store_pressure at beginning or
453      end of forward_step, e.g. by having phiHyd global (5-dim.)
454      (NB: pressure is needed for certain cases in find_rho,
455      which is also invoked through convective_adjustment).
456    o recomputations in find_rho for cases
457     'JMD95'/'UNESCO' or 'MDJWF' are OK.
458    o #define ATMOSPHERIC_LOADING should be differentiable
459    o ini_forcing shifted to begining of initialise_varia
460    o Incorporating QNVS line search routines into MITgcm
461      (this is separate code, and therefore not under pkg)
462      lsopt/, optim/
463    o Updated verification/carbon/
464      - #define GM_VISBECK_VARIABLE_K
465      - GM_taper_scheme    = 'ldd97'    
466    
467    checkpoint46n_post
468    Merging from release1_p8:
469    o verification/natl_box:
470      updating new external_fields_load routine
471    o New package: pkg/seaice
472      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
473      The sea-ice code is based on Hibler (1979-1980).
474      Two sea-ice dynamic solvers, ADI and LSR, are included.
475      In addition to computing prognostic sea-ice variables and diagnosing
476      the forcing/external data fields that drive the ocean model,
477      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
478      The implied surface heat flux is then stored in variable
479      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
480      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
481      non-local transport term.  Because this call precedes model
482      thermodynamics, temperature under sea-ice may not be "exactly" at
483      the freezing point by the time theta is dumped or time-averaged.
484      N.B.: fairly large differences in accuracy occur across
485            different platforms/compilers; comparison between
486            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
487            generated output gives:
488       T           S           U           V
489      C D M    c        m  s        m  s        m  s        m  s
490      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
491      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
492      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
493    
494      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
495    o GAD:
496      - generated new common blocks to account for call of
497        same gad routines with differing traceridentities
498        (needed to modify tracerIdentity indices in GAD.h)
499      - generated separate common blocks for case useCubedSphereExchange
500        (Department of Futurology)
501      - parameter lists to gmredi_?transport: added tracerIdentity
502      - added new key indices to tamc.h
503    o external_fields_load:
504      - added this routine to TAF list
505      - needed to make some common blocks global and additional storing
506        along the same lines as exf package (checkpoint_lev?_directives.h)
507    o exf:
508      updated external forcing package
509      - bug fixes carried over from ecco-branch
510        (missing OBCS_OPTIONS.h in two routines)
511      - enable easy to use "no forcing".
512      - added exf I/O for atmospheric loading
513      - added exf I/O for runoff data
514      - transfered scaling between exf <-> MITgcm to exf namelist
515    o Adding new verification experiment global_with_exf.
516      This verification experiment is almost identical to the
517      global_ocean.90x40x15 experiment, except that it uses
518      the exf (and cal) package instead of the
519      external_fields_load routine (cf README file).
520    
521    checkpoint46m_post
522    o modified testscript to return -- when there are no lines of "%MON" output
523    o added new flag "quasiHydrostatic" for QH mode
524      and new routine quasihydrostaticterms()
525    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
526      New routine: mom_u_coriolis_nh()
527    o fixed sign of non-hydrostatic metric terms in u and v equations.
528      Depend on correct sign of gravitySign.
529    o added work.pc* to .cvsignore in aim directories using ifc
530    o introduced flag for controllin non-hydrostatic metric terms
531    o removed gravitySign from PARM04
532    o switched to g77/ifc from pgf77 in aim experiments
533    
534    checkpoint46l_post
535    o made convective adjustment work with pressure coordinates:
536     - changed the direction of k-loop in convective_adjustment.F for the
537       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
538     - adjusted the reference pressure k-index in convective_adjustment.F
539     - adjusted the convection condition in convect.F (in analogy to
540       calc_ivdc.F)
541     - convective_adjustment no longer computes anything on the halos
542     - removed the warnings about negative salinity from find_rho.F and
543       find_alpha.F; instead the new routine look_for_neg_salinity, called
544       at the beginning of find_rho, find_alpha, and find_beta, does a
545       check of the entire slice, if CPP-option
546       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
547    checkpoint46l_pre
548    
549    checkpoint46k_post
550    o fixed the verification/global_ocean.90x40x15 experiment:
551     - new bathymetry (the world according to A., JMC, and M.)
552     - new initial fields and forcing fields (*.bin files)
553     - new POLY3.COEFFS (for the next release one should switch to a full
554       equation of state: JMD95P or MDJWF)
555     - fixed several errors and redundancies in the data file
556     - experiment uses looped cells
557     - added matlab directory with diagnostic scripts for plotting of output
558    
559    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
560     - read AIM physics parameters from a file (data.aimphys)
561     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
562    
563    checkpoint46j_post
564    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
565    o move wVel computation at the end of the time step, in S/R integr_continuity
566    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
567    o update timeave pkg for wVel diagnostic.
568    checkpoint46j_pre
569    
570    checkpoint46i_post
571    o Clean up AIM package (and keep the results unchanged):
572      include CPP_OPTION and use IMPLICT NONE in all routines ;
573      declare all the variables _RL ; use _d 0 for all numerical constants.
574      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
575    
576    checkpoint46h_post
577    o cleaned up the use of rhoNil and rhoConst.
578      - rhoNil should only appear in the LINEAR equation of state, everywhere
579        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
580        and the dynamical equations are all divided by rhoConst
581    o introduced new parameter rhoConstFresh, a reference density of fresh
582      water, to remove the fresh water flux's dependence on rhoNil. The default
583      value is 999.8 kg/m^3
584    o cleanup up external_forcing.F and external_forcing_surf.F
585      - can now be used by both OCEANIC and OCEANICP
586    checkpoint46h_pre
587    
588     Added code to convert surface volume flux (fresh water) into
589     a mass flux when using P coordinates in the ocean (OCEANICP).
590     Note: It assumes you have set rho0=rhoConst=density of fresh water.
591    
592    checkpoint46g_post
593    o Include a new diagnostic variable phiHydLow for the ocean model
594      - in z-coordinates, it is the bottom pressure anomaly
595      - in p-coordinates, it is the sea surface elevation
596      - in both cases, these variable have global drift, reflecting the mass
597        drift in z-coordinates and the volume drift in p-coordinates
598      - included time averaging for phiHydLow, be aware of the drift!
599    o depth-dependent computation of Bo_surf for pressure coordinates
600      in the ocean (buoyancyRelation='OCEANICP')
601      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
602        Theta, Salinity, and Pressure in the parameter list. This routine is
603        presently contained in find_rho.F. This routine does not give the
604        correct density for 'POLY3', which would be a z-dependent reference
605        density.
606    o cleaned up find_rho
607      - removed obsolete 'eqn' from the parameter list.
608    o added two new verification experiments: gop and goz
609      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
610    checkpoint46g_pre
611    
612    checkpoint46f_post
613    o Enable tangent linear (forward mode) gradient checks:
614      - extended active file handling to g_... files
615      - added TANGENT_SIMULATION to theSimulationMode
616      - extended grdchk package accordingly
617    o added tangent linear setup in verification/carbon/code_ftl
618    o added adjoint setup in verification/front_relax/code_ad
619    
620    checkpoint46e_post
621    o Added new equation of state -> MDJWF
622      - EOS of McDougall et al., 2002, JAOT, submitted
623      - caveat: the equation of state is only valid for a smaller (more
624        realistic?) range of values than JMD95P/Z and UNESCO
625      - added masks to the calculation of pressure in store_pressure
626      - added more check values for density in check_eos (ini_eos.F), some of
627        the old check values are out of the range of the MDJWF-eos, so don't
628        expect perfect matches for those
629    checkpoint46e_pre
630    
631    checkpoint46d_post
632    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
633      'OCEANICP', also initialised field pressure correctly in ini_eos in the
634      case of pressure coordinates. eosType='JMD95Z' in
635      combination with buoyancyRelation='OCEANICP' now causes an error.
636    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
637      in find_alpha/beta.
638    checkpoint46d_pre
639    
640    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
641      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
642    
643    checkpoint46c_post
644    o Changes necessary for ocean in p-coordinates
645     -  Added new buoyancy relation = 'OCEANICP'
646     -  Added new parameters = gravitySign (this used to be contained inside
647        the factor dRdZ which I added when we first switched to R coordinates).
648     X GM/Redi is not compatible (yet)
649     X bottom drag and no-slip need to be debugged.
650    checkpoint46c_pre
651    
652    checkpoint46b_post
653    o Added new equation of state -> JMD95Z and JMD95P
654      - EOS of Jackett and McDougall, 1995, JAOT
655      - moved all EOS parameters into EOS.h
656      - new routines ini_eos.F, store_pressure.F
657    o Added UNESCO EOS, but not recommended because it requires
658      in-situ temperature (see JMD95)
659    o Modified formatting for knudsen2.f in utils/knudsen2 and added
660      unesco.f to be used with POLY3
661    checkpoint46b_pre
662    
663    checkpoint46a_post
664    o Added (atmospheric) pressure loading
665      - new field in FFIELDS.h, etc...
666      - new cpp flag ATMOSPHERIC_LOADING
667    o Changed hFacC to _hFacC in calc_phi_hyd.F
668    o Added SHORTWAVE_HEATING to some files for consistency
669    checkpoint46a_pre
670    
671    checkpoint46
672    further merges from release1_p5
673    o new ctrl package
674      - adopted from ECCO environment to enable optimization
675      - added Eliassen Palm fluxes to controls
676    o added Eliassen Palm flux controls to gradient check package
677    o cost package
678      - Compatible with new ctrl package
679      - added Eliassen Palm cost hooks
680      - modif's of existing cost functions
681    o Adjoint-related bug fixes in kpp:
682      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
683      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
684    o autodiff package
685      - flow directives:
686        + new for S/R do_the_model_io
687        + enhanced for S/R checkpoint
688        + new gmredi.flow
689      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
690        disable adcommon.h/g_common.h by default.
691      - fixed problem for adjoint of global_max
692    o modified verification/carbon/
693    o New setup for adjoint of global_ocean
694    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
695    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
696    o incorporated hooks for sponge layer code (external_forcing.F)
697    
698    checkpoint45d_post
699    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
700    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
701      (affects plume_on_slope "cg2d" output)
702    o add new parameter deltaTfreesurf for free-surface time stepping
703    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
704    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
705    o change phiMin in exp1 (to agree with documentation)
706    o add new flags:
707     - T,S forcing inside/outside Adams-Bashforth
708     - turn off temp,salt advection and/or forcing
709     - for each tracer, define internal flag for multiDimAdvection & A-B
710    o monitor: change definition of KE to check conservation of Energy
711    
712    checkpoint45c_post
713    o Removed f90 comments ("!")
714    o Modified initialisations to enable exf package for MITgcm
715      (without invoking ECCO_PACKAGE).
716    o modifications to gradient check package (Martin Losch)
717      - enable centered differences
718      - modified format of standard output
719    
720    checkpoint45b_post
721    o cleaned exchange calls in cg2d
722    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
723    o included CPP option SINGLE_LAYER_MODE in thermodynamics
724      to configure barotropic setup (Martin Losch)
725    o moved some initialisations within bi,bj loop in dynamics
726      (TAF flow dependency)
727    o in initialise_varia, moved call packages_init_variables
728      before convective_adjustment_init
729      (corresponding adjustment of TAF tape initialisation).
730    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
731    
732    checkpoint45a_post
733    o compute Rho over the whole domain (extend iMin,jMin indices)
734    o specific exchange for X-slice domain (case Ny=1)
735    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
736    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
737    
738    checkpoint44h_post = checkpoint45
739    o Fix to restore differentiability:
740      place at which packages_init_variables is called in
741      initialise_varia is crucial for reverse control flow.
742    o modifications in GMRedi to enable stable adjoint
743      (corresponding modif's in thermodynamics, dynamics)
744    o added missing hook for sponge layer code in external_forcing
745    o modified test cost functions
746    o storing in gad_advection (plus removal of write(0,*)!
747    o missing headers TR1.h added in convective_adjustment routines
748    o errorMessageUnit set non-equal zero in eeboot
749      (conflict on some platforms, e.g. IBM SP3)
750    o modified carbon verif.
751    
752    checkpoint44h_pre
753    o vertical grid option: allow to put the Interface at the middle between
754      2 cell-centers ; replace delZ in pkg/kpp by drF.
755    o GM Advective form: Tracers are advected using the residual transport (=
756      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
757    
758    checkpoint44g_post
759    o fix surface correction term in multiDimAdvection (affects plume_on_slope
760      results) ; ifdef missing in thermodynamics.F
761    
762    checkpoint44f_pre,checkpoint44f_post
763    o added PTRACERS package
764      This allows an arbitrary number of passive tracers to be integrated
765      forward simultaneously with the dynamicaly model.
766      + Implemented so far:
767        - basic forward algorithm (time-stepping, advection, diffusion, convection)
768        - I/O and checkpointing
769        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
770      + Not implemented so far:
771        - KPP
772        - OBCS
773      + No specific example supplied (yet) but global_ocean.90x40x15 has the
774        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
775        line in data.pkg.
776      + This package is disabled by default since it increases storage.
777    
778    
779    o testscript: added -cleanup option
780    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
781                 b) enable to filter 2D fields.
782    
783    checkpoint44e_pre,post
784    o re-wrote convective adjustment to use pre-calculated weights
785      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
786      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
787      Original calls to convect() still in place.
788    
789    chkpt44d_pre,post
790    o added missing EXCLUDE_MONITOR flags
791    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
792      (incompatible typ in MIN/MAX expressions caused problems
793      on IBM SP3)
794    o in genmake added variable MAKEDEPEND
795      plus resetting for case SunOS
796    o added timer_stats.c routine for IBM SP3
797    o removed variables in dynamics
798    !!! I forgot to create tag chkpt44d_pre !!!
799    !!! But chkpt44d_pre = chkpt44c_post    !!!
800    
801    o real fresh water flux implemented with non-linear free-surface.
802    
803    chkpt44c_pre,post
804    o few fix (mask in shap_s2, EmPmR in external_field_load,
805      USE_NATURAL_BCS in solve_for_P);
806    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
807    
808    checkpoint44b_pre/_post
809    o merge of relevant stuff from the ecco-branch:
810      - genmake: removed $S64 overwrite for case SunOS
811      - pkg/exf: update and corrections for field swapping and obcs
812      - pkg/ecco: parameter lists for the_model_main, the_main_loop
813                  harmonized between ECCO and MITgcm
814      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
815                      updated checkpointing_lev... lists for obcs
816      - model/src: minor changes in forward_step, plot_field
817                   added directive for divided adjoint in the_main_loop
818      - pkg/mdsio: added mdsio_gl_slice
819    
820    o check parameters & config (chkpt44a_pre,post)
821    o OBC and NonLin_FrSurf.
822    
823    checkpoint44
824    o fix bug in mom_vi_del2uv
825    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
826    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
827    o update AIM experiments (NCEP input files)
828    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
829    o added some stuff for AD
830    
831    checkpoint43
832    o added two new advection tests
833    o added global 4x4 degree ocean test
834    o added test of H&S94 with free surface on cube
835    o some final mods for gradient check, adjoint,...
836    
837    checkpoint42
838      Fixed AD-related problems:
839    o Store directives up-to-date with re-arranged Adams-Bashforth
840      (mainly thermodynamics.F)
841    o New store directives for multi-dim. advection schemes
842      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
843      * new common block and key passkey
844      (mainly gad_advection.F)
845    o Modified store directives for split of dynamics/thermodynamics
846      for the case ALLOW_KPP
847    o Cleaned argument list for timestep_tracer.F
848    
849    checkpoint41
850    o re-formatted/added comments in prologues of key subroutines
851      to work with protex
852    
853    checkpoint40
854    o moved calc_gs, calc_gt and calc_tr1 back to model/src
855    o added FLT (floats) package from Arne along with demo. experiment
856    o re-arranged Adams-Bashforth scheme for tracers to allow easier
857      implementation of forward-in-time forcing terms
858    o more mods for non-linear free-surface including new variable
859    o modified multi-dim method to work on cube
860    o bug fix in KPP (from DM)
861    
862    checkpoint40pre9
863    o added DST advection schemes
864    o fix MPI bug on SGI's
865    o modifications for non-linear free-surface
866    o fixed conditionals for fixed flow/passive tracer only mode
867    o added tension/strain form of stress tensor
868    o changes to commenting of arguments for TAF/TAMC
869    o added/updated many matlab scripts
870    o added multi-dimensional advection method for tracers
871      
872    checkpoint40pre8
873    o new package rw/
874      Added method for dumping intermediate local arrays:
875      mdsio_writetile - same as mdsio_writefield except works from inside
876                        bi,bj loop
877      mdsio_writelocal - same as mdsio_writetile except works for local
878                         arrays
879      write_local_r? - higher-level wrapper for mdsio_writelocal
880      Controlled by diagFreq. Defaults to zero (ie. no dumps)
881      Example given at end of mom_vecinv.F that dumps some local arrays.
882    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
883      control flux-form versus vector invariant code.
884      Switch is runtime flag vectorInvariantMomentum (defaults to false)
885      or genmake -DISABLE ...
886    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
887      (additional storing is now needed for case vecinv;
888      currently nothing implemented to switch this storing off
889      in case fluxform is used since no CPP flag available).
890    
891    checkpoint40pre7
892    o bug fix in dynamics.F
893      calc_viscosity called before k=1,Nr loop.
894    o added some #ifdef's ALLOW_PASSIVE_TRACER
895    o cleaned initialisations in ctrl_map_ini
896      related to TAF
897    
898    checkpoint40pre6
899    o split dynamics into thermodynamics & dynamics
900    o corresponding split of calc_diffusivity into
901      calc_diffusivity, calc_viscosity
902      (kpp_calc_diff, kpp_calc_visc).
903    o Added diffkr, kapgm to control variables
904    o bug fix in gmredi_slope_limit for ldd97
905    
906    checkpoint40pre5
907    o proper initialization of Adams-Bashforth time stepping
908      + uses forward step for very first step of model (iter=0)
909    o re-generated *all* output since almost all output is modified by this
910      change (sorry but we've been putting this one off for about 2 years)
911      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
912        *not* regenerated since they are already out of date and I don't
913        want to create the impression that they are suddenly working.
914    o removed KAP stuff for DEC's
915    o modified/added many .cvsignore files in */code and */input
916    o added new expt "solid-body.cs-32x32x1"
917      + this uses an alternative form of ini_curvilinear_grid.F which
918        is not necessarily any better than the current one...
919    
920    checkpoint40pre4
921    o added re-initialisations of utrans,vtrans,rtrans in
922      calc_common_factors which are crucial for TAF.
923    o extended iMin,jMin range for calc_common_factors,
924      calc_diffusivity
925    o added option ALLOW_PASSIVE_TRACER
926    o a few minor updates and fixes
927    
928    checkpoint40pre3
929    o created calc_gtr1.F for gad package
930    o split the_main_loop and re-introduced forward_step
931    o some recomputations of nIter0 for TAMC
932    
933    checkpoint40pre2
934    o Updated to latest branch of AJA, JMC
935    o Added gradient check package
936    o Added routines for passive tracer handling
937    o Added carbon sequestration sensitivity experiment
938    
939    checkpoint39
940     o Modifications and fixes to support TAMC
941       (mainly missing or wrong directives)
942     o Corrected common blocks when fooling TAMC to produce adjoint I/O
943       in addummy_in_stepping
944     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
945     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
946     o Included following packages:
947       cal: calendar
948       exf: external forcing
949       ecco: essential routines to control use of cal, exf
950             (NB: this is not the full ECCO environment)
951     o disabled some packages by default in genmake
952    
953    checkpoint38
954     o see notes_c37_adj.txt
955     o corrected wrong layer index in external_forcing_t
956     o replaced the_main_loop/forward_step by the_main_loop
957     o removed forceoutput from write_state
958       (replaced criteria for initial/final state)
959     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
960    
961    checkpoint37
962     o mdsio.F routine split and packaged in pkg/mdsio
963       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
964        used unless genmake -disable=mdsio)
965     o allow a more precise surface-geopotential gradient for the atmosphere
966       taking into account the change in space of Alpha (=1/rho) at the surface.
967     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
968       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
969     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
970       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
971       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
972     o Time-Average diagnostics defined as a pseudo package "timeave".
973     o pickup files : old pickup (before c35) did not work with new code (c35
974       and after) unless activating 2 commented lines in initialise-varia.
975     o Non-Hydrostatic pickup file Pb fixed.
976     o bug with Rigid-lid version (since c35) fixed.  
977    
978    checkpoint36
979     o implement Crank-Nickelson barotropic time-stepping
980     o recover Time-Average diagnostics
981     o fix Pb in checkpoint (PR#19)
982     o AIM become a standard package ; clean unused CPP_kees
983    
984    checkpoint35
985     o subtantial rewrite of dynamics.f
986     o allows staggered time-stepping
987     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
988     o added bottom drag (linear + quadratic)
989    
990    checkpoint34
991     o Modified exchange routines for correct reverse simulation.
992     o Added verification output to comply with bug fix in impldiff.F
993       as of c33 (exp2, natl_box).
994     o Corrected store directives in dynamics.F
995     o Corrected array boundaries in impldiff.F
996     o Corrected array dimensions in gmredi.
997       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
998     o Added routine GLOBAL_SUM_INT to global_sum.F
999     o Added mdsio_gl.F for ECCO purposes.
1000    
1001    checkpoint33
1002     o Fixed bug in lower BC in impldiff.F
1003     o Fixed confusion about units of forcing arrays in FFIELDS.h
1004       namely Fu,Fv,Qnet,Qsw,EmPmR:
1005       - Removed verification/natl_box/code/external_fields_scale.F
1006         (did not differ from that in model/src)
1007       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1008         (see FFIELDS.h for description)
1009       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1010         kpp_calc.F and kpp_transport_t.F
1011       - Removed model/src/external_fields_scale.F and calls to it
1012       - verification/natl_box uses flux data with "atmospheric" sign so
1013         a special version of external_fields_load.F is used to
1014         change the data as it's read in. This way, the arrays
1015         have the right units and signs at all times tha a user could
1016         possibly use them.
1017     o Corrected genmake to delete a temporary file during configuration
1018    
1019    checkpoint32
1020     o Scaling of forcing fields moved from external_forcing.F to
1021       external_fields_scale.F, called directly after loading fields.
1022     o Surface relaxation terms added to surface tendency fields in
1023       extra subroutine.
1024     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1025       fields.
1026     o Changes in GMRedi to comply with packaging structure.
1027     o Modifications and bug fixes in KPP package.
1028     o Verification experiment for KPP added (verification/nat_box/)
1029    
1030    checkpoint31
1031     o Packages interface brought in line with defined standard
1032       -> new routines packages_...F
1033       -> changes in initialise_fixed.F, initialise_varia.F
1034       -> enables initialisation interface for ECCO package
1035     o Rescaling of external forcing fields immediately after read
1036       (removed from external_forcing.F)
1037       -> new: surface_fields_scale.F
1038       -> affects ini_foorcing.F, external_fields_load.F
1039     o Computation of surface tendencies before tendency updates.
1040       -> new: external_forcing_surf.F
1041     o Change of variable names useGMRedi, useKPP, useECCO
1042     o Further changes in dynamics.F, impldiff.F for TAMC
1043     o Tested for experiments 0, 2, 4.
1044       - not yet tested for GMRedi.
1045       - not yet tested for KPP.
1046    
1047    checkpoint30
1048     o Updates for OBCs
1049     o New experiment for test OBCs (internal_wave)
1050     o New output.txt in verification/exp4/results/
1051     o Updates for KPP: calculation of viscosity corrected, new variables
1052       kpp_dumpFreq and kpp_taveFreq
1053     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1054       and entry for T90 in genmake
1055    
1056    checkpoint29
1057     o packaged KPP and GM/Redi
1058    
1059    checkpoint28
1060     o Corrected initialization of hFacMin for difference vertical coordinates
1061     o Modified calculation of partial cell thickness to more robust algorithm
1062     o config_summary.F: replaced write_1D_... by write_0D_...
1063       read_write.F: added subroutines write_0D_...
1064     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1065       included some initialisations required for TAMC.
1066     o routine calc_isoslopes: modified sqrt computation to make it
1067       differentiable for zero argument.
1068     o routines dynamics, impldiff:
1069       included store directives and tape key computations required for TAMC.
1070     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1071    
1072    checkpoint27
1073     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1074       formulation works properly with variable resolution.
1075     o restructured the calling tree between the_model_main() and dynamics()
1076     o split initialise() into initialise_fixed() and initialise_varia()
1077     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1078       in new routine ini_psurf()
1079    
1080    checkpoint26
1081     o moved some #ifdef in optional routines to encompass everything
1082       except the argument declarations. This was using up some memory.
1083     o fixed macros like _ADT to work with both versions of Linux cpp
1084     o cleaned up some unused and uninitialized variables
1085       (helps when debugging with strict compile options)
1086     o split up CPP_EEOPTIONS.h into options and macros
1087       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1088     o patch for 2 processor JAM mode
1089    
1090    checkpoint25
1091     o updates for OBCs and NH
1092     o dramatically reduced memory usage
1093     o added "JAM" routines for use on Artic network
1094     o parameterization of convection by implicit vertical diffusion
1095     o added a diagnostic of convective index
1096     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1097       (this is was partly for OBCs and NH but also in anticipation of
1098        an explicit free-surface option)
1099     o initial state input files for U and V
1100    
1101    checkpoint24
1102     o Removed some spurious "REAL"s
1103     o Updated KPP to latest version from JPL
1104     o Added a COS(latitude) in horizontal viscosity
1105    
1106    checkpoint23
1107     o Added del^4 diffusion for salt and temperature
1108     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1109    
1110    checkpoint22
1111     o Made many small changes: implicit none, format(i5), etc...
1112     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1113    
1114    checkpoint21
1115     o Introduced new I/O package that supports direct-access records (mdsio.F)
1116     o Split-up mid-level I/O routines
1117     o Updated input data for experiments 0,1,2,4 and 5
1118     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1119    
1120    checkpoint20
1121     o Tidied up open-boundaries some more
1122     o Added non-hydrostatic code
1123     o Fixed some input data
1124     o Modified MPI start-up to work in "coupled" context.
1125    
1126    checkpoint19
1127     o Tidied up directory structure for verification experiments.
1128     o Added new code for open boundaries.
1129     o Corrected advective terms near boundaries.
1130     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1131     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1132     o Split default parameters out of ini_parms.F into set_defaults.F.
1133    
1134    checkpoint18
1135     o Further changes for optional code generation with
1136       CPP - ugh!
1137    
1138    checkpoint17
1139     o Beginning to incorporating modularity
1140       for supporting atmos. and ocean configs.
1141     o Small changes for TAMC complinace
1142     o New ultra simple test case. Barotropic box
1143       configuration "exp0".
1144    
1145    checkpoint16
1146     o Minor changes to exchange routines to support
1147       accumulation in reverse mode. Adjoint of an
1148       assignment is an addition.
1149     o Changes to support compilation by TAMC (LR(1)
1150       syntax) and by g77 under Linux ( 72 character
1151       limit ).
1152    
1153    checkpoint15
1154     Rewrote exchange routines to allow
1155     o General tile <-> tile connectivity.
1156     o TAMC reverse mode flag ( is this really needed? )
1157     o Variable width overlap and exchange region widths.
1158     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1159       shmput/shmget, VIA, SYSV shmem and every other cool
1160       communication method.
1161    
1162    checkpoint14
1163     Consistent isomorphism chages made. These allow dynamical core
1164     to support both pressure and meters as a vertical coordinate.
1165    
1166    checkpoint13
1167     Release which corrects global_max problem and a couple
1168     of KGM time-averaging diagnostic errors. Also contains
1169     a double-gyre experiment setup as well as the baseline
1170     4 degree global template. The double gyre template is
1171     organised to allow it to be applied automatically to
1172     the baseline configuration.
1173    
1174    branch-point-rdot
1175     A few tidy-ups have been made bt the real point of this
1176     check-point (excuse the pun) is to allow a branch to be
1177     made for the purposes of adding the rDot alterations.
1178     I don't want to commit the rDot to the main-trunk until
1179     we've actually tested it...
1180    
1181    checkpoint12
1182     Tidy up and added generic genmake script (formerly
1183     configure script).
1184     Released to testers.
1185    
1186    checkpoint11
1187     Re-arranged initialise() and introduced ini_vertical_grid()
1188     and ini_masks_etc().
1189    
1190  checkpoint10  checkpoint10
1191   Introduced the configure script.   Introduced the configure script.
1192   Separated out the diags package.   Separated out the diags package.

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