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revision 1.9 by adcroft, Thu Jul 2 14:20:04 1998 UTC revision 1.178 by dimitri, Wed Sep 24 06:50:26 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    untagged
7    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
8      of tracer Green's fucntions for ocean inversion project.
9    
10    checkpoint51f_pre
11    o Added on-the-fly spatial interpolation capability
12        "USE_EXF_INTERPOLATION" to pkg/exf.
13      - This is a temporary Cartesian-grid hack until
14        the super-duper ESMF coupler becomes available.
15      - See verification/global_with_exf/README for usage example.
16      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
17        flags and modified pkg/seaice accordingly.
18    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
19        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
20        non-local transport term.
21    
22    checkpoint51e_post
23    o pkg/mom_vecinv:
24      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
25      - add time-ave diagnostic of vorticity advection.
26    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
27    o atmospheric geopotential: - include water vapor effect;
28                                - use p^kappa in p* scaling.
29    o land pkg: read initial state from files.
30    o AIM : add stratospheric drag in the upper level
31    
32    checkpoint51d_post
33    o change function ILNBLNK (=> last non-blank char.) to return zero
34      (instead of the string length) when the string. char is empty
35    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
36    o modif's to restore TAMC compatibility
37      - avoid "_d" constructs in PARAMETER declarations
38      - avoid interrupting lines by comment lines
39    o Use cluster local disks for purely local I/O
40      vs. globally visible disks needed for ctrl stuff
41      (merged from ecco-branch)
42      - new active_file_loc... and mdsio_..._loc routines
43      - affected packages: autodiff, ctrl, grdchk, mdsio
44    
45    checkpoint51c_post
46    o introducing integer flag debugLevel
47      - debLevZero: suppress all output
48      - debLevA: standard
49      - debLevB: equivalent to current debugMode=.TRUE.
50    o introducing pathname variable mdsioLocalDir for mdsio
51      that can be specified at runtime
52      (relevant for cluster I/O to local disk)
53    `
54    >>>checkpoint51b_post
55    adjoint of ptracers
56    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
57    o extended state in checkpoint_lev?, etc.
58    o alternative ctrl/cost with tr1 or ptracer
59    o new comlev1_bibj_ptracers
60    o new ptracers.flow
61    o made ptracers_forcing same as external_forcing_s
62    o added verification for adjoint with ptracers
63      - adm. grdchk fail so far
64      - tlm. grdchk OK
65      - checked tapelev/comlev recomputations: OK
66    <<<checkpoint51b_pre
67    
68    checkpoint51a_post
69    o added code for biogeochemistry package
70      - new pkgs: dic, gchem
71      - new subroutine in ptracers
72    o modify code for biogeo packages
73      - in model/src and pkg/ptracers
74    
75    checkpoint51
76    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
77      - autodiff, ctrl, exf, grdchk, seaice
78      kept separate packages
79      - cost, ecco, obcs
80    o updating verification/internal_wave, verification/lab_sea
81      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
82    
83    checkpoint50i_post
84    o Preparing next differentiable checkpoint and sync
85      of MAIN vs. ecco-branch
86      - 1st step: this one is differentiable
87      - 2nd step: next(! not this) checkpoint will have updated packages
88                  from ecco-branch)
89    
90    checkpoint50h_post
91    o new package "land": provide surface BC for AIM.
92    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
93    o AIM: use true log-P extrapolation for near surface temp (= as in
94        F.Molteni paper) ; update aim.5l_cs output.
95    o New variable in PARM03 for more flexible pickups
96    o somewhat cleaned package initialisation sequence for
97      ctrl/ cost/ ecco/ in packages_... routines
98    
99    checkpoint50g_post
100    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
101      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
102      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
103        made the default because of faster convergence than ADI
104    
105    checkpoint50f_post
106    o exf totally restructured
107      - replaced all exf_set_ routines by one generic exf_set_gen.F
108        and made sure it's still differentiable
109      - split exf_getffields.F into new exf_bulkformulae.F
110      - exf_inscal_/exf_outscal_ suffixes consistent with field names
111      - updated adjoint/makefile and relevant verif. accordingly
112    
113    checkpoint50f_pre
114     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
115          + change Evap over land. (update aim.5l_cs output)
116     o added missing .cvsignores and made uniform across expts
117     o changed configuration of tidal_basin_2d expt
118     o added pkg/debug functions for tracing code in fatal crashes
119     o tidied pkg/monitor to use MONITOR_OPTIONS.h
120     o new fn in pkg/monitor to stop model if solution grows too big
121     o removed lots of single quotes from comments
122    
123    checkpoint50e_post
124    o make KPP work with PTRACERS
125     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
126       nearly a copy of kpp_transport_s
127     - there is no analogue to SurfaceTendencyS, so I have to use
128       gPtr(of the surface layer) instead
129    o add a new platform SunFire+mpi (SunFire 15000) to genmake
130    checkpoint50e_pre
131    
132    checkpoint50d_post
133    o change kpp output from multiple-record state files to single-record state
134      files analogous to write_state.F
135    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
136      analogous to the cg2d-related output.
137    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
138      so that writing to internal file fn (with length 512) fails.
139    checkpoint50d_pre
140    
141    checkpoint50c_post
142    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
143    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
144    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
145    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
146    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
147    
148    checkpoint50c_pre
149    Merging from release1_p13:
150    o bug fix for pkg/seaice dynamic solver
151    o Added SEAICE_initialHEFF to pkg/seaice
152    
153    checkpoint50b_post
154    o store u*,v* in gU,V instead of in guNm1,gvNm1
155    o in order to put the momForcing out of the Adams-Bashforth:
156      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
157      to timestep.F
158    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
159    o re-generate output for highly sensitive test-exp:
160       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
161    
162    checkpoint50b_pre
163    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
164    o corrected CPP option mismatch in exf_Bulk... functions for case
165      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
166    
167    checkpoint50a_post
168    o Bug fix for merging between c50 and KPP.
169      ikey was passed from thermodynamics to kpp_calc via
170      common block rather than being recomputed in kpp_calc,
171      in contradiction with new key itdkey.
172      New key ikppkey created, and tamc.h headers updated.
173    
174    checkpoint50
175    - 2nd step of merge with ecco-branch:
176      merge changes in ecco-branch back into main trunk
177    - bug fix in find_alpha
178    - more storing in gmredi_calc_tensor.F, kpp_routines.F
179    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
180    - merged some sliced AD support routines
181    
182    checkpoint49
183    merged from ecco-branch:
184    o exf:
185      - Enable initialisation of forcing fields to constant
186        (runtime) values.
187      - in exf_getffields.F
188        Reduce i-/j-loop to interior domain, discarding overlaps.
189        That also fixes wrong TAF-key computations for key_1, key_2
190        with bulf formulae.
191      - exf_init.F modify #ifdef for exf_init_evap
192      - exf_getffieldrec.F, ctrl_getrec.F
193        The following INT-usages are not safe:
194          fldsecs  = int(fldsecs/fldperiod)*fldperiod
195          fldcount = int(fldsecs/fldperiod) + 1
196        and were modified.
197    o autodiff: checkpoint_lev...
198      - updated storing for bulk formulae (some arrays were missing)
199      - added state for seaice package
200      - synchronized with main branch
201    o DIVA:
202      Modif.s in
203      - the_main_loop.F
204      - the_model_main.F
205      and added cost_final_restore.F cost_final_store.F
206      o With these changes, it is possible to fully separate
207        the first forward run to compute the cost function (mdthe_main_loop)
208        and adjoint runs over individual DIVA intervals (adthe_main_loop)
209        into separate model executions.
210        This enables better tuning of DIVA to given queue sizes.
211      o Loss of cost function value in consecutive DIVA runs is
212        fixed by storing to 'costfinal' file.
213      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
214        beginning/end of adjoint integration is accounted for.
215      The current changes apply to TAF-1.4.26.
216      TAF has one remaining bug, requiring one manual change
217      (see MITgcm manual).
218    o cal: synchronized between MAIN and ecco-branch
219    
220    checkpoint48i_post
221    o Changes to restore differentiability of code w.r.t. previous tag
222      (mostly adding new routines to make list and replacing
223      pressure by totPhiHyd).
224    o Updated and merged grdchk package
225      - has both ADM and TLM checks
226      - works for single- and multi-proc.
227      - output cleaned
228      - worked successfully for parallel DIVA
229    o genmake:
230      - Adding -platform=SP4
231      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
232    o Modif. for DIVA:
233      ctrl_unpack should not be called in intermediate DIVA interval.
234      (similar thing would apply for active files such as
235      tbar, sbar, psbar, which should not be reinitialised;
236      only relevant for ecco-branch)
237    
238    checkpoint48h_post
239    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
240    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
241    o Added SEAICE_initialHEFF to pkg/seaice
242    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
243    
244    checkpoint48g_post
245    --- EOS:
246    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
247      store total Potential in totPhyHyd for diagnostics & EOS.
248    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
249    --- Pressure/geopotential gradient:
250    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
251    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
252      ( changes results of global_ocean_pressure )
253    o NLFS + z-coord.: add eta*Rho' contribution.
254    o accurate phiHyd when using interface-W at the middle between 2 centers
255     ( changes results of ideal_2D_oce )
256    o includes r* 2nd term in potential gradient.
257    
258    checkpoint48f_post
259    Merging from release1_p12:
260    o Modifications for using pkg/exf with pkg/seaice
261      - improved description of the various forcing configurations
262      - added basic radiation bulk formulae to pkg/exf
263      - units/sign fix for evap computation in exf_getffields.F
264      - updated verification/global_with_exf/results/output.txt
265    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
266      (SBO) core products, including oceanic mass, center-of-mass,
267      angular, and bottom pressure (see pkg/sbo/README.sbo).
268    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
269      to avoid negative values in shallow regions.
270      - updated verification/natl_box/results/output.txt
271      - updated verification/lab_sea/results/output.txt
272    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
273    o Added useSingleCpuIO option (see PARAMS.h).
274    o Updated useSingleCpuIO option in mdsio_writefield.F to
275      work with multi-field files, e.g., for single-file pickup.
276    o pkg/seaice:
277      - bug fix in growth.F: QNET for no shortwave case
278      - added HeffFile for specifying initial sea-ice thickness
279      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
280    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
281      kpp_transport_t.F, forward_step.F, and the_main_loop.F
282    o pkg/seaice:
283      - adjoint-friendly modifications
284      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
285    
286    checkpoint48e_post
287    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
288    o dynamics: change definition of computational domain & adapt mom_fluxform
289      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
290    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
291        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
292        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
293        global_ocean.90x40x15 global_with_exf global_ocean_pressure
294        inverted_barometer solid-body.cs-32x32x1
295      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
296    
297    checkpoint48d_post
298    o in preparation for r*:
299     a) use pre-computed gradient of hydrostatic potential:
300        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
301     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
302        => affects results of glob_oce_pressure (different truncation error)  
303      update output.txt of ideal_2D_oce & global_ocean_pressure
304    
305    checkpoint48d_pre
306    o in preparation for r*:
307      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
308      pass the 2 comp. of the grad. as arguments to momentum S/R.
309      but for the moment, only used if it does not change the results.
310    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
311    
312    checkpoint48c_post
313    Modifications in treatment of initial flux forcing controls
314    to avoid extra storing of flux fields.
315    
316    checkpoint48c_pre
317    o Added tidal_basin_2d experiment (currently 1D!)
318    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
319    
320    checkpoint48b_post
321    o r* coordinate added in #ifdef NONLIN_FRSURF block.
322     (modification to pressure gradient not yet implemented)
323    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
324      (for U & V) that are used for vertical advection of momentum.
325    
326    checkpoint48a_post
327    o In preparation for r*, use temp. array to compute vertical transport
328       in flux-form momentum pkg. => change results of few test-exp.
329      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
330                        lab_sea, natl_box & plume_on_slope
331    
332    checkpoint48
333    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
334    
335    checkpoint47j_post
336    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
337    o moved adexch from forward_step to addummy_in_stepping
338    o added exch in ctrl_map_...
339    o aveFreq.=0. at end of cost_final to avoid overwrite in
340      reverse checkpointing loop
341    o Yet more changes in gmredi:
342      * adgmredi_calc_tensor
343        avoiding all recomputation of gmredi_slope_limit
344      * adgmredi_x/y/rtransport
345        added flag for excessive storing to avoid recomp. of
346        u/v/rtans, dTdx/y/z
347        -> this is not really necessary and very memory-consuming
348      * adgmredi_slope_psi:
349        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
350      * gmredi_slope_limit
351        re-activated full calculation of taperfct for case 'ac02'
352    o updating verification/ adjoints of carbon, global_ocean.90x40x15
353    
354    checkpoint47i_post
355    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
356    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
357      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
358    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
359    o gmredi: fix few bugs.
360    
361    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
362    This will be a good checkpoint to plug into the ecco-branch.
363    o few modif.'s to get latest version adjointed
364      (mainly kick out code in ini_linear_phisurf)
365    o modif's to run adjoint with exactConserv
366    o case GM_BOLUS_ADVEC should be cleaned
367      S/R gmredi_slope_psi should be cleaned
368    o verification/carbon now has exactConserv=.TRUE.
369    
370    checkpoint47g_post
371    o time-average AIM output: becomes independent from statvars time-average
372      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
373    o After TAF bug fix:
374      Tested adjoint of gmredi package.
375      Tests were done with checkpoint47 rather than with latest
376      checkpoint47f_post since the latter is broken for the adjoint
377      verification/carbon/ contains both ADM and TLM gradient checks.
378    Here they are, before they get changed/lost/stolen.
379    Mostly modif.'s to fix numerical sensitivities.
380    Gradient checks OK for
381    - GM_taper_scheme:
382      * clipping
383      * ac02
384      * linear
385      * glw91
386      * dm95
387      * ldd97
388    - GMREDI_OPTIONS:
389      * GM_VISBECK_VARIABLE_K
390      * GM_NON_UNITY_DIAGONAL
391      * GM_EXTRA_DIAGONAL
392      * GM_BOLUS_ADVEC
393    in conjunction with data.gmredi parameters to be checked in
394    in a few minutes under verification/carbon/code/
395    
396    checkpoint47f_post
397    Merging from release1_p10:
398    o modifications for using pkg/exf with pkg/seaice
399      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
400        and SEAICE_EXTERNAL_FLUXES
401      - pkg/exf CPP options EXF_READ_EVAP and
402        EXF_NO_BULK_COMPUTATIONS
403      - usage examples are Experiments 8 and 9 in
404        verification/lab_sea/README
405      - verification/lab_sea default experiment now uses
406        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
407    
408    checkpoint47e_post
409    o created a tag prior to creating a branch
410    
411    checkpoint47d_post
412    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
413      at the bottom boundary had an erroneous half slip boundary condition
414    o added bottom drag and no slip boundary condition capabilities to
415      oceanic pressure coordinates code
416    o added new verification experiment global_ocean_pressure, this experiment is
417      also described in the tutorial section of the manual
418    checkpoint47d_pre
419    
420    checkpoint47c_post
421    o Added a verification experiment for a global cubed-sphere ocean run
422      -  verification/global_ocean.cubed32x32x30
423      -  uses pkg/therm_seaice and pkg/bulk_forcing
424    
425    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
426    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
427      when using P-coordinate; only implemented for atmospheric config.
428    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
429      NOTES: requires option NONLIN_FRSURF to be "#define".
430    o update advect_xz/results/output.txt (left from checkpoint44g_post)
431    
432    checkpoint47b_post
433    Merging from release1_p9:
434    o pkg/seaice
435      - removed GOTO's and added taf directives
436      - double precision constants to reduce the g77 (Linux)
437        to F77 (SGI) differences reported in release1_p8
438    o tools/genmake
439      - added SGI options
440    o verification/testscript
441      - updated to that of checkpoint47a_post
442    o verification/global_ocean.90x40x15/input/eedata
443      - modified for SGI f77 compatibility
444    o verification/lab_sea
445      - added description of sea-ice model
446      - added missing matlab routines
447      - added test of thermodynamics parallelization
448    
449    checkpoint47a_post
450    o new pkg: aim_v23
451     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
452       for now, keep the same surface forcing as before.
453     - Part-Cell implemented into AIM; check that Heat & Water are conserved
454     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
455     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
456    o add diagnostic of surface correction term in monitor output
457    
458    o bulk_force and therm_seaice
459    - Two packages:  bulk_force (Bulk forcing)
460      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
461    - Earlier integration from Stephaine Dutkiewicz
462      and Patrick Heimbach.
463    - Two ifdef statements for compile time,
464       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
465    
466    checkpoint47
467    differentiable version of checkpoint46n_post
468    o bug fix in quasihydrostaticterms
469    o * "clean" adjoint code (in terms of extensive recomputations)
470        can now be obtained for all GMREDI options (i.e. for
471        - GM_VISBECK_VARIABLE_K
472        - GM_NON_UNITY_DIAGONAL
473        - GM_EXTRA_DIAGONAL
474        - GM_BOLUS_ADVEC )
475      * However, wrong gradient check problem remains unsolved.
476      * New CPP options have been introduced for different
477        tapering schemes
478    o external_fields_load now part of differentiation list
479    o pressure needs multiple storing;
480      would be nice to have store_pressure at beginning or
481      end of forward_step, e.g. by having phiHyd global (5-dim.)
482      (NB: pressure is needed for certain cases in find_rho,
483      which is also invoked through convective_adjustment).
484    o recomputations in find_rho for cases
485     'JMD95'/'UNESCO' or 'MDJWF' are OK.
486    o #define ATMOSPHERIC_LOADING should be differentiable
487    o ini_forcing shifted to begining of initialise_varia
488    o Incorporating QNVS line search routines into MITgcm
489      (this is separate code, and therefore not under pkg)
490      lsopt/, optim/
491    o Updated verification/carbon/
492      - #define GM_VISBECK_VARIABLE_K
493      - GM_taper_scheme    = 'ldd97'    
494    
495    checkpoint46n_post
496    Merging from release1_p8:
497    o verification/natl_box:
498      updating new external_fields_load routine
499    o New package: pkg/seaice
500      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
501      The sea-ice code is based on Hibler (1979-1980).
502      Two sea-ice dynamic solvers, ADI and LSR, are included.
503      In addition to computing prognostic sea-ice variables and diagnosing
504      the forcing/external data fields that drive the ocean model,
505      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
506      The implied surface heat flux is then stored in variable
507      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
508      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
509      non-local transport term.  Because this call precedes model
510      thermodynamics, temperature under sea-ice may not be "exactly" at
511      the freezing point by the time theta is dumped or time-averaged.
512      N.B.: fairly large differences in accuracy occur across
513            different platforms/compilers; comparison between
514            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
515            generated output gives:
516       T           S           U           V
517      C D M    c        m  s        m  s        m  s        m  s
518      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
519      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
520      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
521    
522      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
523    o GAD:
524      - generated new common blocks to account for call of
525        same gad routines with differing traceridentities
526        (needed to modify tracerIdentity indices in GAD.h)
527      - generated separate common blocks for case useCubedSphereExchange
528        (Department of Futurology)
529      - parameter lists to gmredi_?transport: added tracerIdentity
530      - added new key indices to tamc.h
531    o external_fields_load:
532      - added this routine to TAF list
533      - needed to make some common blocks global and additional storing
534        along the same lines as exf package (checkpoint_lev?_directives.h)
535    o exf:
536      updated external forcing package
537      - bug fixes carried over from ecco-branch
538        (missing OBCS_OPTIONS.h in two routines)
539      - enable easy to use "no forcing".
540      - added exf I/O for atmospheric loading
541      - added exf I/O for runoff data
542      - transfered scaling between exf <-> MITgcm to exf namelist
543    o Adding new verification experiment global_with_exf.
544      This verification experiment is almost identical to the
545      global_ocean.90x40x15 experiment, except that it uses
546      the exf (and cal) package instead of the
547      external_fields_load routine (cf README file).
548    
549    checkpoint46m_post
550    o modified testscript to return -- when there are no lines of "%MON" output
551    o added new flag "quasiHydrostatic" for QH mode
552      and new routine quasihydrostaticterms()
553    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
554      New routine: mom_u_coriolis_nh()
555    o fixed sign of non-hydrostatic metric terms in u and v equations.
556      Depend on correct sign of gravitySign.
557    o added work.pc* to .cvsignore in aim directories using ifc
558    o introduced flag for controllin non-hydrostatic metric terms
559    o removed gravitySign from PARM04
560    o switched to g77/ifc from pgf77 in aim experiments
561    
562    checkpoint46l_post
563    o made convective adjustment work with pressure coordinates:
564     - changed the direction of k-loop in convective_adjustment.F for the
565       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
566     - adjusted the reference pressure k-index in convective_adjustment.F
567     - adjusted the convection condition in convect.F (in analogy to
568       calc_ivdc.F)
569     - convective_adjustment no longer computes anything on the halos
570     - removed the warnings about negative salinity from find_rho.F and
571       find_alpha.F; instead the new routine look_for_neg_salinity, called
572       at the beginning of find_rho, find_alpha, and find_beta, does a
573       check of the entire slice, if CPP-option
574       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
575    checkpoint46l_pre
576    
577    checkpoint46k_post
578    o fixed the verification/global_ocean.90x40x15 experiment:
579     - new bathymetry (the world according to A., JMC, and M.)
580     - new initial fields and forcing fields (*.bin files)
581     - new POLY3.COEFFS (for the next release one should switch to a full
582       equation of state: JMD95P or MDJWF)
583     - fixed several errors and redundancies in the data file
584     - experiment uses looped cells
585     - added matlab directory with diagnostic scripts for plotting of output
586    
587    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
588     - read AIM physics parameters from a file (data.aimphys)
589     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
590    
591    checkpoint46j_post
592    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
593    o move wVel computation at the end of the time step, in S/R integr_continuity
594    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
595    o update timeave pkg for wVel diagnostic.
596    checkpoint46j_pre
597    
598    checkpoint46i_post
599    o Clean up AIM package (and keep the results unchanged):
600      include CPP_OPTION and use IMPLICT NONE in all routines ;
601      declare all the variables _RL ; use _d 0 for all numerical constants.
602      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
603    
604    checkpoint46h_post
605    o cleaned up the use of rhoNil and rhoConst.
606      - rhoNil should only appear in the LINEAR equation of state, everywhere
607        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
608        and the dynamical equations are all divided by rhoConst
609    o introduced new parameter rhoConstFresh, a reference density of fresh
610      water, to remove the fresh water flux's dependence on rhoNil. The default
611      value is 999.8 kg/m^3
612    o cleanup up external_forcing.F and external_forcing_surf.F
613      - can now be used by both OCEANIC and OCEANICP
614    checkpoint46h_pre
615    
616     Added code to convert surface volume flux (fresh water) into
617     a mass flux when using P coordinates in the ocean (OCEANICP).
618     Note: It assumes you have set rho0=rhoConst=density of fresh water.
619    
620    checkpoint46g_post
621    o Include a new diagnostic variable phiHydLow for the ocean model
622      - in z-coordinates, it is the bottom pressure anomaly
623      - in p-coordinates, it is the sea surface elevation
624      - in both cases, these variable have global drift, reflecting the mass
625        drift in z-coordinates and the volume drift in p-coordinates
626      - included time averaging for phiHydLow, be aware of the drift!
627    o depth-dependent computation of Bo_surf for pressure coordinates
628      in the ocean (buoyancyRelation='OCEANICP')
629      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
630        Theta, Salinity, and Pressure in the parameter list. This routine is
631        presently contained in find_rho.F. This routine does not give the
632        correct density for 'POLY3', which would be a z-dependent reference
633        density.
634    o cleaned up find_rho
635      - removed obsolete 'eqn' from the parameter list.
636    o added two new verification experiments: gop and goz
637      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
638    checkpoint46g_pre
639    
640    checkpoint46f_post
641    o Enable tangent linear (forward mode) gradient checks:
642      - extended active file handling to g_... files
643      - added TANGENT_SIMULATION to theSimulationMode
644      - extended grdchk package accordingly
645    o added tangent linear setup in verification/carbon/code_ftl
646    o added adjoint setup in verification/front_relax/code_ad
647    
648    checkpoint46e_post
649    o Added new equation of state -> MDJWF
650      - EOS of McDougall et al., 2002, JAOT, submitted
651      - caveat: the equation of state is only valid for a smaller (more
652        realistic?) range of values than JMD95P/Z and UNESCO
653      - added masks to the calculation of pressure in store_pressure
654      - added more check values for density in check_eos (ini_eos.F), some of
655        the old check values are out of the range of the MDJWF-eos, so don't
656        expect perfect matches for those
657    checkpoint46e_pre
658    
659    checkpoint46d_post
660    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
661      'OCEANICP', also initialised field pressure correctly in ini_eos in the
662      case of pressure coordinates. eosType='JMD95Z' in
663      combination with buoyancyRelation='OCEANICP' now causes an error.
664    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
665      in find_alpha/beta.
666    checkpoint46d_pre
667    
668    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
669      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
670    
671    checkpoint46c_post
672    o Changes necessary for ocean in p-coordinates
673     -  Added new buoyancy relation = 'OCEANICP'
674     -  Added new parameters = gravitySign (this used to be contained inside
675        the factor dRdZ which I added when we first switched to R coordinates).
676     X GM/Redi is not compatible (yet)
677     X bottom drag and no-slip need to be debugged.
678    checkpoint46c_pre
679    
680    checkpoint46b_post
681    o Added new equation of state -> JMD95Z and JMD95P
682      - EOS of Jackett and McDougall, 1995, JAOT
683      - moved all EOS parameters into EOS.h
684      - new routines ini_eos.F, store_pressure.F
685    o Added UNESCO EOS, but not recommended because it requires
686      in-situ temperature (see JMD95)
687    o Modified formatting for knudsen2.f in utils/knudsen2 and added
688      unesco.f to be used with POLY3
689    checkpoint46b_pre
690    
691    checkpoint46a_post
692    o Added (atmospheric) pressure loading
693      - new field in FFIELDS.h, etc...
694      - new cpp flag ATMOSPHERIC_LOADING
695    o Changed hFacC to _hFacC in calc_phi_hyd.F
696    o Added SHORTWAVE_HEATING to some files for consistency
697    checkpoint46a_pre
698    
699    checkpoint46
700    further merges from release1_p5
701    o new ctrl package
702      - adopted from ECCO environment to enable optimization
703      - added Eliassen Palm fluxes to controls
704    o added Eliassen Palm flux controls to gradient check package
705    o cost package
706      - Compatible with new ctrl package
707      - added Eliassen Palm cost hooks
708      - modif's of existing cost functions
709    o Adjoint-related bug fixes in kpp:
710      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
711      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
712    o autodiff package
713      - flow directives:
714        + new for S/R do_the_model_io
715        + enhanced for S/R checkpoint
716        + new gmredi.flow
717      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
718        disable adcommon.h/g_common.h by default.
719      - fixed problem for adjoint of global_max
720    o modified verification/carbon/
721    o New setup for adjoint of global_ocean
722    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
723    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
724    o incorporated hooks for sponge layer code (external_forcing.F)
725    
726    checkpoint45d_post
727    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
728    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
729      (affects plume_on_slope "cg2d" output)
730    o add new parameter deltaTfreesurf for free-surface time stepping
731    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
732    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
733    o change phiMin in exp1 (to agree with documentation)
734    o add new flags:
735     - T,S forcing inside/outside Adams-Bashforth
736     - turn off temp,salt advection and/or forcing
737     - for each tracer, define internal flag for multiDimAdvection & A-B
738    o monitor: change definition of KE to check conservation of Energy
739    
740    checkpoint45c_post
741    o Removed f90 comments ("!")
742    o Modified initialisations to enable exf package for MITgcm
743      (without invoking ECCO_PACKAGE).
744    o modifications to gradient check package (Martin Losch)
745      - enable centered differences
746      - modified format of standard output
747    
748    checkpoint45b_post
749    o cleaned exchange calls in cg2d
750    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
751    o included CPP option SINGLE_LAYER_MODE in thermodynamics
752      to configure barotropic setup (Martin Losch)
753    o moved some initialisations within bi,bj loop in dynamics
754      (TAF flow dependency)
755    o in initialise_varia, moved call packages_init_variables
756      before convective_adjustment_init
757      (corresponding adjustment of TAF tape initialisation).
758    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
759    
760    checkpoint45a_post
761    o compute Rho over the whole domain (extend iMin,jMin indices)
762    o specific exchange for X-slice domain (case Ny=1)
763    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
764    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
765    
766    checkpoint44h_post = checkpoint45
767    o Fix to restore differentiability:
768      place at which packages_init_variables is called in
769      initialise_varia is crucial for reverse control flow.
770    o modifications in GMRedi to enable stable adjoint
771      (corresponding modif's in thermodynamics, dynamics)
772    o added missing hook for sponge layer code in external_forcing
773    o modified test cost functions
774    o storing in gad_advection (plus removal of write(0,*)!
775    o missing headers TR1.h added in convective_adjustment routines
776    o errorMessageUnit set non-equal zero in eeboot
777      (conflict on some platforms, e.g. IBM SP3)
778    o modified carbon verif.
779    
780    checkpoint44h_pre
781    o vertical grid option: allow to put the Interface at the middle between
782      2 cell-centers ; replace delZ in pkg/kpp by drF.
783    o GM Advective form: Tracers are advected using the residual transport (=
784      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
785    
786    checkpoint44g_post
787    o fix surface correction term in multiDimAdvection (affects plume_on_slope
788      results) ; ifdef missing in thermodynamics.F
789    
790    checkpoint44f_pre,checkpoint44f_post
791    o added PTRACERS package
792      This allows an arbitrary number of passive tracers to be integrated
793      forward simultaneously with the dynamicaly model.
794      + Implemented so far:
795        - basic forward algorithm (time-stepping, advection, diffusion, convection)
796        - I/O and checkpointing
797        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
798      + Not implemented so far:
799        - KPP
800        - OBCS
801      + No specific example supplied (yet) but global_ocean.90x40x15 has the
802        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
803        line in data.pkg.
804      + This package is disabled by default since it increases storage.
805    
806    
807    o testscript: added -cleanup option
808    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
809                 b) enable to filter 2D fields.
810    
811    checkpoint44e_pre,post
812    o re-wrote convective adjustment to use pre-calculated weights
813      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
814      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
815      Original calls to convect() still in place.
816    
817    chkpt44d_pre,post
818    o added missing EXCLUDE_MONITOR flags
819    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
820      (incompatible typ in MIN/MAX expressions caused problems
821      on IBM SP3)
822    o in genmake added variable MAKEDEPEND
823      plus resetting for case SunOS
824    o added timer_stats.c routine for IBM SP3
825    o removed variables in dynamics
826    !!! I forgot to create tag chkpt44d_pre !!!
827    !!! But chkpt44d_pre = chkpt44c_post    !!!
828    
829    o real fresh water flux implemented with non-linear free-surface.
830    
831    chkpt44c_pre,post
832    o few fix (mask in shap_s2, EmPmR in external_field_load,
833      USE_NATURAL_BCS in solve_for_P);
834    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
835    
836    checkpoint44b_pre/_post
837    o merge of relevant stuff from the ecco-branch:
838      - genmake: removed $S64 overwrite for case SunOS
839      - pkg/exf: update and corrections for field swapping and obcs
840      - pkg/ecco: parameter lists for the_model_main, the_main_loop
841                  harmonized between ECCO and MITgcm
842      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
843                      updated checkpointing_lev... lists for obcs
844      - model/src: minor changes in forward_step, plot_field
845                   added directive for divided adjoint in the_main_loop
846      - pkg/mdsio: added mdsio_gl_slice
847    
848    o check parameters & config (chkpt44a_pre,post)
849    o OBC and NonLin_FrSurf.
850    
851    checkpoint44
852    o fix bug in mom_vi_del2uv
853    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
854    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
855    o update AIM experiments (NCEP input files)
856    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
857    o added some stuff for AD
858    
859    checkpoint43
860    o added two new advection tests
861    o added global 4x4 degree ocean test
862    o added test of H&S94 with free surface on cube
863    o some final mods for gradient check, adjoint,...
864    
865    checkpoint42
866      Fixed AD-related problems:
867    o Store directives up-to-date with re-arranged Adams-Bashforth
868      (mainly thermodynamics.F)
869    o New store directives for multi-dim. advection schemes
870      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
871      * new common block and key passkey
872      (mainly gad_advection.F)
873    o Modified store directives for split of dynamics/thermodynamics
874      for the case ALLOW_KPP
875    o Cleaned argument list for timestep_tracer.F
876    
877    checkpoint41
878    o re-formatted/added comments in prologues of key subroutines
879      to work with protex
880    
881    checkpoint40
882    o moved calc_gs, calc_gt and calc_tr1 back to model/src
883    o added FLT (floats) package from Arne along with demo. experiment
884    o re-arranged Adams-Bashforth scheme for tracers to allow easier
885      implementation of forward-in-time forcing terms
886    o more mods for non-linear free-surface including new variable
887    o modified multi-dim method to work on cube
888    o bug fix in KPP (from DM)
889    
890    checkpoint40pre9
891    o added DST advection schemes
892    o fix MPI bug on SGI's
893    o modifications for non-linear free-surface
894    o fixed conditionals for fixed flow/passive tracer only mode
895    o added tension/strain form of stress tensor
896    o changes to commenting of arguments for TAF/TAMC
897    o added/updated many matlab scripts
898    o added multi-dimensional advection method for tracers
899      
900    checkpoint40pre8
901    o new package rw/
902      Added method for dumping intermediate local arrays:
903      mdsio_writetile - same as mdsio_writefield except works from inside
904                        bi,bj loop
905      mdsio_writelocal - same as mdsio_writetile except works for local
906                         arrays
907      write_local_r? - higher-level wrapper for mdsio_writelocal
908      Controlled by diagFreq. Defaults to zero (ie. no dumps)
909      Example given at end of mom_vecinv.F that dumps some local arrays.
910    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
911      control flux-form versus vector invariant code.
912      Switch is runtime flag vectorInvariantMomentum (defaults to false)
913      or genmake -DISABLE ...
914    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
915      (additional storing is now needed for case vecinv;
916      currently nothing implemented to switch this storing off
917      in case fluxform is used since no CPP flag available).
918    
919    checkpoint40pre7
920    o bug fix in dynamics.F
921      calc_viscosity called before k=1,Nr loop.
922    o added some #ifdef's ALLOW_PASSIVE_TRACER
923    o cleaned initialisations in ctrl_map_ini
924      related to TAF
925    
926    checkpoint40pre6
927    o split dynamics into thermodynamics & dynamics
928    o corresponding split of calc_diffusivity into
929      calc_diffusivity, calc_viscosity
930      (kpp_calc_diff, kpp_calc_visc).
931    o Added diffkr, kapgm to control variables
932    o bug fix in gmredi_slope_limit for ldd97
933    
934    checkpoint40pre5
935    o proper initialization of Adams-Bashforth time stepping
936      + uses forward step for very first step of model (iter=0)
937    o re-generated *all* output since almost all output is modified by this
938      change (sorry but we've been putting this one off for about 2 years)
939      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
940        *not* regenerated since they are already out of date and I don't
941        want to create the impression that they are suddenly working.
942    o removed KAP stuff for DEC's
943    o modified/added many .cvsignore files in */code and */input
944    o added new expt "solid-body.cs-32x32x1"
945      + this uses an alternative form of ini_curvilinear_grid.F which
946        is not necessarily any better than the current one...
947    
948    checkpoint40pre4
949    o added re-initialisations of utrans,vtrans,rtrans in
950      calc_common_factors which are crucial for TAF.
951    o extended iMin,jMin range for calc_common_factors,
952      calc_diffusivity
953    o added option ALLOW_PASSIVE_TRACER
954    o a few minor updates and fixes
955    
956    checkpoint40pre3
957    o created calc_gtr1.F for gad package
958    o split the_main_loop and re-introduced forward_step
959    o some recomputations of nIter0 for TAMC
960    
961    checkpoint40pre2
962    o Updated to latest branch of AJA, JMC
963    o Added gradient check package
964    o Added routines for passive tracer handling
965    o Added carbon sequestration sensitivity experiment
966    
967    checkpoint39
968     o Modifications and fixes to support TAMC
969       (mainly missing or wrong directives)
970     o Corrected common blocks when fooling TAMC to produce adjoint I/O
971       in addummy_in_stepping
972     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
973     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
974     o Included following packages:
975       cal: calendar
976       exf: external forcing
977       ecco: essential routines to control use of cal, exf
978             (NB: this is not the full ECCO environment)
979     o disabled some packages by default in genmake
980    
981    checkpoint38
982     o see notes_c37_adj.txt
983     o corrected wrong layer index in external_forcing_t
984     o replaced the_main_loop/forward_step by the_main_loop
985     o removed forceoutput from write_state
986       (replaced criteria for initial/final state)
987     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
988    
989    checkpoint37
990     o mdsio.F routine split and packaged in pkg/mdsio
991       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
992        used unless genmake -disable=mdsio)
993     o allow a more precise surface-geopotential gradient for the atmosphere
994       taking into account the change in space of Alpha (=1/rho) at the surface.
995     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
996       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
997     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
998       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
999       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1000     o Time-Average diagnostics defined as a pseudo package "timeave".
1001     o pickup files : old pickup (before c35) did not work with new code (c35
1002       and after) unless activating 2 commented lines in initialise-varia.
1003     o Non-Hydrostatic pickup file Pb fixed.
1004     o bug with Rigid-lid version (since c35) fixed.  
1005    
1006    checkpoint36
1007     o implement Crank-Nickelson barotropic time-stepping
1008     o recover Time-Average diagnostics
1009     o fix Pb in checkpoint (PR#19)
1010     o AIM become a standard package ; clean unused CPP_kees
1011    
1012    checkpoint35
1013     o subtantial rewrite of dynamics.f
1014     o allows staggered time-stepping
1015     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1016     o added bottom drag (linear + quadratic)
1017    
1018    checkpoint34
1019     o Modified exchange routines for correct reverse simulation.
1020     o Added verification output to comply with bug fix in impldiff.F
1021       as of c33 (exp2, natl_box).
1022     o Corrected store directives in dynamics.F
1023     o Corrected array boundaries in impldiff.F
1024     o Corrected array dimensions in gmredi.
1025       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1026     o Added routine GLOBAL_SUM_INT to global_sum.F
1027     o Added mdsio_gl.F for ECCO purposes.
1028    
1029    checkpoint33
1030     o Fixed bug in lower BC in impldiff.F
1031     o Fixed confusion about units of forcing arrays in FFIELDS.h
1032       namely Fu,Fv,Qnet,Qsw,EmPmR:
1033       - Removed verification/natl_box/code/external_fields_scale.F
1034         (did not differ from that in model/src)
1035       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1036         (see FFIELDS.h for description)
1037       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1038         kpp_calc.F and kpp_transport_t.F
1039       - Removed model/src/external_fields_scale.F and calls to it
1040       - verification/natl_box uses flux data with "atmospheric" sign so
1041         a special version of external_fields_load.F is used to
1042         change the data as it's read in. This way, the arrays
1043         have the right units and signs at all times tha a user could
1044         possibly use them.
1045     o Corrected genmake to delete a temporary file during configuration
1046    
1047    checkpoint32
1048     o Scaling of forcing fields moved from external_forcing.F to
1049       external_fields_scale.F, called directly after loading fields.
1050     o Surface relaxation terms added to surface tendency fields in
1051       extra subroutine.
1052     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1053       fields.
1054     o Changes in GMRedi to comply with packaging structure.
1055     o Modifications and bug fixes in KPP package.
1056     o Verification experiment for KPP added (verification/nat_box/)
1057    
1058    checkpoint31
1059     o Packages interface brought in line with defined standard
1060       -> new routines packages_...F
1061       -> changes in initialise_fixed.F, initialise_varia.F
1062       -> enables initialisation interface for ECCO package
1063     o Rescaling of external forcing fields immediately after read
1064       (removed from external_forcing.F)
1065       -> new: surface_fields_scale.F
1066       -> affects ini_foorcing.F, external_fields_load.F
1067     o Computation of surface tendencies before tendency updates.
1068       -> new: external_forcing_surf.F
1069     o Change of variable names useGMRedi, useKPP, useECCO
1070     o Further changes in dynamics.F, impldiff.F for TAMC
1071     o Tested for experiments 0, 2, 4.
1072       - not yet tested for GMRedi.
1073       - not yet tested for KPP.
1074    
1075    checkpoint30
1076     o Updates for OBCs
1077     o New experiment for test OBCs (internal_wave)
1078     o New output.txt in verification/exp4/results/
1079     o Updates for KPP: calculation of viscosity corrected, new variables
1080       kpp_dumpFreq and kpp_taveFreq
1081     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1082       and entry for T90 in genmake
1083    
1084    checkpoint29
1085     o packaged KPP and GM/Redi
1086    
1087    checkpoint28
1088     o Corrected initialization of hFacMin for difference vertical coordinates
1089     o Modified calculation of partial cell thickness to more robust algorithm
1090     o config_summary.F: replaced write_1D_... by write_0D_...
1091       read_write.F: added subroutines write_0D_...
1092     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1093       included some initialisations required for TAMC.
1094     o routine calc_isoslopes: modified sqrt computation to make it
1095       differentiable for zero argument.
1096     o routines dynamics, impldiff:
1097       included store directives and tape key computations required for TAMC.
1098     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1099    
1100    checkpoint27
1101     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1102       formulation works properly with variable resolution.
1103     o restructured the calling tree between the_model_main() and dynamics()
1104     o split initialise() into initialise_fixed() and initialise_varia()
1105     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1106       in new routine ini_psurf()
1107    
1108    checkpoint26
1109     o moved some #ifdef in optional routines to encompass everything
1110       except the argument declarations. This was using up some memory.
1111     o fixed macros like _ADT to work with both versions of Linux cpp
1112     o cleaned up some unused and uninitialized variables
1113       (helps when debugging with strict compile options)
1114     o split up CPP_EEOPTIONS.h into options and macros
1115       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1116     o patch for 2 processor JAM mode
1117    
1118    checkpoint25
1119     o updates for OBCs and NH
1120     o dramatically reduced memory usage
1121     o added "JAM" routines for use on Artic network
1122     o parameterization of convection by implicit vertical diffusion
1123     o added a diagnostic of convective index
1124     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1125       (this is was partly for OBCs and NH but also in anticipation of
1126        an explicit free-surface option)
1127     o initial state input files for U and V
1128    
1129    checkpoint24
1130     o Removed some spurious "REAL"s
1131     o Updated KPP to latest version from JPL
1132     o Added a COS(latitude) in horizontal viscosity
1133    
1134    checkpoint23
1135     o Added del^4 diffusion for salt and temperature
1136     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1137    
1138    checkpoint22
1139     o Made many small changes: implicit none, format(i5), etc...
1140     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1141    
1142    checkpoint21
1143     o Introduced new I/O package that supports direct-access records (mdsio.F)
1144     o Split-up mid-level I/O routines
1145     o Updated input data for experiments 0,1,2,4 and 5
1146     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1147    
1148    checkpoint20
1149     o Tidied up open-boundaries some more
1150     o Added non-hydrostatic code
1151     o Fixed some input data
1152     o Modified MPI start-up to work in "coupled" context.
1153    
1154    checkpoint19
1155     o Tidied up directory structure for verification experiments.
1156     o Added new code for open boundaries.
1157     o Corrected advective terms near boundaries.
1158     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1159     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1160     o Split default parameters out of ini_parms.F into set_defaults.F.
1161    
1162    checkpoint18
1163     o Further changes for optional code generation with
1164       CPP - ugh!
1165    
1166    checkpoint17
1167     o Beginning to incorporating modularity
1168       for supporting atmos. and ocean configs.
1169     o Small changes for TAMC complinace
1170     o New ultra simple test case. Barotropic box
1171       configuration "exp0".
1172    
1173    checkpoint16
1174     o Minor changes to exchange routines to support
1175       accumulation in reverse mode. Adjoint of an
1176       assignment is an addition.
1177     o Changes to support compilation by TAMC (LR(1)
1178       syntax) and by g77 under Linux ( 72 character
1179       limit ).
1180    
1181    checkpoint15
1182     Rewrote exchange routines to allow
1183     o General tile <-> tile connectivity.
1184     o TAMC reverse mode flag ( is this really needed? )
1185     o Variable width overlap and exchange region widths.
1186     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1187       shmput/shmget, VIA, SYSV shmem and every other cool
1188       communication method.
1189    
1190    checkpoint14
1191     Consistent isomorphism chages made. These allow dynamical core
1192     to support both pressure and meters as a vertical coordinate.
1193    
1194    checkpoint13
1195     Release which corrects global_max problem and a couple
1196     of KGM time-averaging diagnostic errors. Also contains
1197     a double-gyre experiment setup as well as the baseline
1198     4 degree global template. The double gyre template is
1199     organised to allow it to be applied automatically to
1200     the baseline configuration.
1201    
1202    branch-point-rdot
1203     A few tidy-ups have been made bt the real point of this
1204     check-point (excuse the pun) is to allow a branch to be
1205     made for the purposes of adding the rDot alterations.
1206     I don't want to commit the rDot to the main-trunk until
1207     we've actually tested it...
1208    
1209    checkpoint12
1210     Tidy up and added generic genmake script (formerly
1211     configure script).
1212     Released to testers.
1213    
1214  checkpoint11  checkpoint11
1215   Re-arranged initialise() and introduced ini_vertical_grid()   Re-arranged initialise() and introduced ini_vertical_grid()
1216   and ini_masks_etc().   and ini_masks_etc().

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