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revision 1.4 by cnh, Mon Jun 8 22:38:51 1998 UTC revision 1.161 by jmc, Mon May 26 19:03:40 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o AIM: use true log-P extrapolation for near surface temp (= as in
7        F.Molteni paper) ; update aim.5l_cs output.
8    
9    checkpoint50g_post
10    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
11      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
12      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
13        made the default because of faster convergence than ADI
14    
15    checkpoint50f_post
16    o exf totally restructured
17      - replaced all exf_set_ routines by one generic exf_set_gen.F
18        and made sure it's still differentiable
19      - split exf_getffields.F into new exf_bulkformulae.F
20      - exf_inscal_/exf_outscal_ suffixes consistent with field names
21      - updated adjoint/makefile and relevant verif. accordingly
22    
23    checkpoint50f_pre
24     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
25          + change Evap over land. (update aim.5l_cs output)
26     o added missing .cvsignores and made uniform across expts
27     o changed configuration of tidal_basin_2d expt
28     o added pkg/debug functions for tracing code in fatal crashes
29     o tidied pkg/monitor to use MONITOR_OPTIONS.h
30     o new fn in pkg/monitor to stop model if solution grows too big
31     o removed lots of single quotes from comments
32    
33    checkpoint50e_post
34    o make KPP work with PTRACERS
35     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
36       nearly a copy of kpp_transport_s
37     - there is no analogue to SurfaceTendencyS, so I have to use
38       gPtr(of the surface layer) instead
39    o add a new platform SunFire+mpi (SunFire 15000) to genmake
40    checkpoint50e_pre
41    
42    checkpoint50d_post
43    o change kpp output from multiple-record state files to single-record state
44      files analogous to write_state.F
45    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
46      analogous to the cg2d-related output.
47    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
48      so that writing to internal file fn (with length 512) fails.
49    checkpoint50d_pre
50    
51    checkpoint50c_post
52    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
53    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
54    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
55    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
56    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
57    
58    checkpoint50c_pre
59    Merging from release1_p13:
60    o bug fix for pkg/seaice dynamic solver
61    o Added SEAICE_initialHEFF to pkg/seaice
62    
63    checkpoint50b_post
64    o store u*,v* in gU,V instead of in guNm1,gvNm1
65    o in order to put the momForcing out of the Adams-Bashforth:
66      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
67      to timestep.F
68    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
69    o re-generate output for highly sensitive test-exp:
70       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
71    
72    checkpoint50b_pre
73    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
74    o corrected CPP option mismatch in exf_Bulk... functions for case
75      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
76    
77    checkpoint50a_post
78    o Bug fix for merging between c50 and KPP.
79      ikey was passed from thermodynamics to kpp_calc via
80      common block rather than being recomputed in kpp_calc,
81      in contradiction with new key itdkey.
82      New key ikppkey created, and tamc.h headers updated.
83    
84    checkpoint50
85    - 2nd step of merge with ecco-branch:
86      merge changes in ecco-branch back into main trunk
87    - bug fix in find_alpha
88    - more storing in gmredi_calc_tensor.F, kpp_routines.F
89    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
90    - merged some sliced AD support routines
91    
92    checkpoint49
93    merged from ecco-branch:
94    o exf:
95      - Enable initialisation of forcing fields to constant
96        (runtime) values.
97      - in exf_getffields.F
98        Reduce i-/j-loop to interior domain, discarding overlaps.
99        That also fixes wrong TAF-key computations for key_1, key_2
100        with bulf formulae.
101      - exf_init.F modify #ifdef for exf_init_evap
102      - exf_getffieldrec.F, ctrl_getrec.F
103        The following INT-usages are not safe:
104          fldsecs  = int(fldsecs/fldperiod)*fldperiod
105          fldcount = int(fldsecs/fldperiod) + 1
106        and were modified.
107    o autodiff: checkpoint_lev...
108      - updated storing for bulk formulae (some arrays were missing)
109      - added state for seaice package
110      - synchronized with main branch
111    o DIVA:
112      Modif.s in
113      - the_main_loop.F
114      - the_model_main.F
115      and added cost_final_restore.F cost_final_store.F
116      o With these changes, it is possible to fully separate
117        the first forward run to compute the cost function (mdthe_main_loop)
118        and adjoint runs over individual DIVA intervals (adthe_main_loop)
119        into separate model executions.
120        This enables better tuning of DIVA to given queue sizes.
121      o Loss of cost function value in consecutive DIVA runs is
122        fixed by storing to 'costfinal' file.
123      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
124        beginning/end of adjoint integration is accounted for.
125      The current changes apply to TAF-1.4.26.
126      TAF has one remaining bug, requiring one manual change
127      (see MITgcm manual).
128    o cal: synchronized between MAIN and ecco-branch
129    
130    checkpoint48i_post
131    o Changes to restore differentiability of code w.r.t. previous tag
132      (mostly adding new routines to make list and replacing
133      pressure by totPhiHyd).
134    o Updated and merged grdchk package
135      - has both ADM and TLM checks
136      - works for single- and multi-proc.
137      - output cleaned
138      - worked successfully for parallel DIVA
139    o genmake:
140      - Adding -platform=SP4
141      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
142    o Modif. for DIVA:
143      ctrl_unpack should not be called in intermediate DIVA interval.
144      (similar thing would apply for active files such as
145      tbar, sbar, psbar, which should not be reinitialised;
146      only relevant for ecco-branch)
147    
148    checkpoint48h_post
149    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
150    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
151    o Added SEAICE_initialHEFF to pkg/seaice
152    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
153    
154    checkpoint48g_post
155    --- EOS:
156    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
157      store total Potential in totPhyHyd for diagnostics & EOS.
158    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
159    --- Pressure/geopotential gradient:
160    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
161    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
162      ( changes results of global_ocean_pressure )
163    o NLFS + z-coord.: add eta*Rho' contribution.
164    o accurate phiHyd when using interface-W at the middle between 2 centers
165     ( changes results of ideal_2D_oce )
166    o includes r* 2nd term in potential gradient.
167    
168    checkpoint48f_post
169    Merging from release1_p12:
170    o Modifications for using pkg/exf with pkg/seaice
171      - improved description of the various forcing configurations
172      - added basic radiation bulk formulae to pkg/exf
173      - units/sign fix for evap computation in exf_getffields.F
174      - updated verification/global_with_exf/results/output.txt
175    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
176      (SBO) core products, including oceanic mass, center-of-mass,
177      angular, and bottom pressure (see pkg/sbo/README.sbo).
178    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
179      to avoid negative values in shallow regions.
180      - updated verification/natl_box/results/output.txt
181      - updated verification/lab_sea/results/output.txt
182    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
183    o Added useSingleCpuIO option (see PARAMS.h).
184    o Updated useSingleCpuIO option in mdsio_writefield.F to
185      work with multi-field files, e.g., for single-file pickup.
186    o pkg/seaice:
187      - bug fix in growth.F: QNET for no shortwave case
188      - added HeffFile for specifying initial sea-ice thickness
189      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
190    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
191      kpp_transport_t.F, forward_step.F, and the_main_loop.F
192    o pkg/seaice:
193      - adjoint-friendly modifications
194      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
195    
196    checkpoint48e_post
197    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
198    o dynamics: change definition of computational domain & adapt mom_fluxform
199      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
200    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
201        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
202        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
203        global_ocean.90x40x15 global_with_exf global_ocean_pressure
204        inverted_barometer solid-body.cs-32x32x1
205      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
206    
207    checkpoint48d_post
208    o in preparation for r*:
209     a) use pre-computed gradient of hydrostatic potential:
210        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
211     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
212        => affects results of glob_oce_pressure (different truncation error)  
213      update output.txt of ideal_2D_oce & global_ocean_pressure
214    
215    checkpoint48d_pre
216    o in preparation for r*:
217      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
218      pass the 2 comp. of the grad. as arguments to momentum S/R.
219      but for the moment, only used if it does not change the results.
220    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
221    
222    checkpoint48c_post
223    Modifications in treatment of initial flux forcing controls
224    to avoid extra storing of flux fields.
225    
226    checkpoint48c_pre
227    o Added tidal_basin_2d experiment (currently 1D!)
228    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
229    
230    checkpoint48b_post
231    o r* coordinate added in #ifdef NONLIN_FRSURF block.
232     (modification to pressure gradient not yet implemented)
233    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
234      (for U & V) that are used for vertical advection of momentum.
235    
236    checkpoint48a_post
237    o In preparation for r*, use temp. array to compute vertical transport
238       in flux-form momentum pkg. => change results of few test-exp.
239      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
240                        lab_sea, natl_box & plume_on_slope
241    
242    checkpoint48
243    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
244    
245    checkpoint47j_post
246    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
247    o moved adexch from forward_step to addummy_in_stepping
248    o added exch in ctrl_map_...
249    o aveFreq.=0. at end of cost_final to avoid overwrite in
250      reverse checkpointing loop
251    o Yet more changes in gmredi:
252      * adgmredi_calc_tensor
253        avoiding all recomputation of gmredi_slope_limit
254      * adgmredi_x/y/rtransport
255        added flag for excessive storing to avoid recomp. of
256        u/v/rtans, dTdx/y/z
257        -> this is not really necessary and very memory-consuming
258      * adgmredi_slope_psi:
259        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
260      * gmredi_slope_limit
261        re-activated full calculation of taperfct for case 'ac02'
262    o updating verification/ adjoints of carbon, global_ocean.90x40x15
263    
264    checkpoint47i_post
265    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
266    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
267      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
268    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
269    o gmredi: fix few bugs.
270    
271    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
272    This will be a good checkpoint to plug into the ecco-branch.
273    o few modif.'s to get latest version adjointed
274      (mainly kick out code in ini_linear_phisurf)
275    o modif's to run adjoint with exactConserv
276    o case GM_BOLUS_ADVEC should be cleaned
277      S/R gmredi_slope_psi should be cleaned
278    o verification/carbon now has exactConserv=.TRUE.
279    
280    checkpoint47g_post
281    o time-average AIM output: becomes independent from statvars time-average
282      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
283    o After TAF bug fix:
284      Tested adjoint of gmredi package.
285      Tests were done with checkpoint47 rather than with latest
286      checkpoint47f_post since the latter is broken for the adjoint
287      verification/carbon/ contains both ADM and TLM gradient checks.
288    Here they are, before they get changed/lost/stolen.
289    Mostly modif.'s to fix numerical sensitivities.
290    Gradient checks OK for
291    - GM_taper_scheme:
292      * clipping
293      * ac02
294      * linear
295      * glw91
296      * dm95
297      * ldd97
298    - GMREDI_OPTIONS:
299      * GM_VISBECK_VARIABLE_K
300      * GM_NON_UNITY_DIAGONAL
301      * GM_EXTRA_DIAGONAL
302      * GM_BOLUS_ADVEC
303    in conjunction with data.gmredi parameters to be checked in
304    in a few minutes under verification/carbon/code/
305    
306    checkpoint47f_post
307    Merging from release1_p10:
308    o modifications for using pkg/exf with pkg/seaice
309      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
310        and SEAICE_EXTERNAL_FLUXES
311      - pkg/exf CPP options EXF_READ_EVAP and
312        EXF_NO_BULK_COMPUTATIONS
313      - usage examples are Experiments 8 and 9 in
314        verification/lab_sea/README
315      - verification/lab_sea default experiment now uses
316        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
317    
318    checkpoint47e_post
319    o created a tag prior to creating a branch
320    
321    checkpoint47d_post
322    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
323      at the bottom boundary had an erroneous half slip boundary condition
324    o added bottom drag and no slip boundary condition capabilities to
325      oceanic pressure coordinates code
326    o added new verification experiment global_ocean_pressure, this experiment is
327      also described in the tutorial section of the manual
328    checkpoint47d_pre
329    
330    checkpoint47c_post
331    o Added a verification experiment for a global cubed-sphere ocean run
332      -  verification/global_ocean.cubed32x32x30
333      -  uses pkg/therm_seaice and pkg/bulk_forcing
334    
335    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
336    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
337      when using P-coordinate; only implemented for atmospheric config.
338    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
339      NOTES: requires option NONLIN_FRSURF to be "#define".
340    o update advect_xz/results/output.txt (left from checkpoint44g_post)
341    
342    checkpoint47b_post
343    Merging from release1_p9:
344    o pkg/seaice
345      - removed GOTO's and added taf directives
346      - double precision constants to reduce the g77 (Linux)
347        to F77 (SGI) differences reported in release1_p8
348    o tools/genmake
349      - added SGI options
350    o verification/testscript
351      - updated to that of checkpoint47a_post
352    o verification/global_ocean.90x40x15/input/eedata
353      - modified for SGI f77 compatibility
354    o verification/lab_sea
355      - added description of sea-ice model
356      - added missing matlab routines
357      - added test of thermodynamics parallelization
358    
359    checkpoint47a_post
360    o new pkg: aim_v23
361     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
362       for now, keep the same surface forcing as before.
363     - Part-Cell implemented into AIM; check that Heat & Water are conserved
364     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
365     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
366    o add diagnostic of surface correction term in monitor output
367    
368    o bulk_force and therm_seaice
369    - Two packages:  bulk_force (Bulk forcing)
370      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
371    - Earlier integration from Stephaine Dutkiewicz
372      and Patrick Heimbach.
373    - Two ifdef statements for compile time,
374       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
375    
376    checkpoint47
377    differentiable version of checkpoint46n_post
378    o bug fix in quasihydrostaticterms
379    o * "clean" adjoint code (in terms of extensive recomputations)
380        can now be obtained for all GMREDI options (i.e. for
381        - GM_VISBECK_VARIABLE_K
382        - GM_NON_UNITY_DIAGONAL
383        - GM_EXTRA_DIAGONAL
384        - GM_BOLUS_ADVEC )
385      * However, wrong gradient check problem remains unsolved.
386      * New CPP options have been introduced for different
387        tapering schemes
388    o external_fields_load now part of differentiation list
389    o pressure needs multiple storing;
390      would be nice to have store_pressure at beginning or
391      end of forward_step, e.g. by having phiHyd global (5-dim.)
392      (NB: pressure is needed for certain cases in find_rho,
393      which is also invoked through convective_adjustment).
394    o recomputations in find_rho for cases
395     'JMD95'/'UNESCO' or 'MDJWF' are OK.
396    o #define ATMOSPHERIC_LOADING should be differentiable
397    o ini_forcing shifted to begining of initialise_varia
398    o Incorporating QNVS line search routines into MITgcm
399      (this is separate code, and therefore not under pkg)
400      lsopt/, optim/
401    o Updated verification/carbon/
402      - #define GM_VISBECK_VARIABLE_K
403      - GM_taper_scheme    = 'ldd97'    
404    
405    checkpoint46n_post
406    Merging from release1_p8:
407    o verification/natl_box:
408      updating new external_fields_load routine
409    o New package: pkg/seaice
410      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
411      The sea-ice code is based on Hibler (1979-1980).
412      Two sea-ice dynamic solvers, ADI and LSR, are included.
413      In addition to computing prognostic sea-ice variables and diagnosing
414      the forcing/external data fields that drive the ocean model,
415      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
416      The implied surface heat flux is then stored in variable
417      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
418      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
419      non-local transport term.  Because this call precedes model
420      thermodynamics, temperature under sea-ice may not be "exactly" at
421      the freezing point by the time theta is dumped or time-averaged.
422      N.B.: fairly large differences in accuracy occur across
423            different platforms/compilers; comparison between
424            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
425            generated output gives:
426       T           S           U           V
427      C D M    c        m  s        m  s        m  s        m  s
428      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
429      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
430      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
431    
432      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
433    o GAD:
434      - generated new common blocks to account for call of
435        same gad routines with differing traceridentities
436        (needed to modify tracerIdentity indices in GAD.h)
437      - generated separate common blocks for case useCubedSphereExchange
438        (Department of Futurology)
439      - parameter lists to gmredi_?transport: added tracerIdentity
440      - added new key indices to tamc.h
441    o external_fields_load:
442      - added this routine to TAF list
443      - needed to make some common blocks global and additional storing
444        along the same lines as exf package (checkpoint_lev?_directives.h)
445    o exf:
446      updated external forcing package
447      - bug fixes carried over from ecco-branch
448        (missing OBCS_OPTIONS.h in two routines)
449      - enable easy to use "no forcing".
450      - added exf I/O for atmospheric loading
451      - added exf I/O for runoff data
452      - transfered scaling between exf <-> MITgcm to exf namelist
453    o Adding new verification experiment global_with_exf.
454      This verification experiment is almost identical to the
455      global_ocean.90x40x15 experiment, except that it uses
456      the exf (and cal) package instead of the
457      external_fields_load routine (cf README file).
458    
459    checkpoint46m_post
460    o modified testscript to return -- when there are no lines of "%MON" output
461    o added new flag "quasiHydrostatic" for QH mode
462      and new routine quasihydrostaticterms()
463    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
464      New routine: mom_u_coriolis_nh()
465    o fixed sign of non-hydrostatic metric terms in u and v equations.
466      Depend on correct sign of gravitySign.
467    o added work.pc* to .cvsignore in aim directories using ifc
468    o introduced flag for controllin non-hydrostatic metric terms
469    o removed gravitySign from PARM04
470    o switched to g77/ifc from pgf77 in aim experiments
471    
472    checkpoint46l_post
473    o made convective adjustment work with pressure coordinates:
474     - changed the direction of k-loop in convective_adjustment.F for the
475       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
476     - adjusted the reference pressure k-index in convective_adjustment.F
477     - adjusted the convection condition in convect.F (in analogy to
478       calc_ivdc.F)
479     - convective_adjustment no longer computes anything on the halos
480     - removed the warnings about negative salinity from find_rho.F and
481       find_alpha.F; instead the new routine look_for_neg_salinity, called
482       at the beginning of find_rho, find_alpha, and find_beta, does a
483       check of the entire slice, if CPP-option
484       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
485    checkpoint46l_pre
486    
487    checkpoint46k_post
488    o fixed the verification/global_ocean.90x40x15 experiment:
489     - new bathymetry (the world according to A., JMC, and M.)
490     - new initial fields and forcing fields (*.bin files)
491     - new POLY3.COEFFS (for the next release one should switch to a full
492       equation of state: JMD95P or MDJWF)
493     - fixed several errors and redundancies in the data file
494     - experiment uses looped cells
495     - added matlab directory with diagnostic scripts for plotting of output
496    
497    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
498     - read AIM physics parameters from a file (data.aimphys)
499     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
500    
501    checkpoint46j_post
502    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
503    o move wVel computation at the end of the time step, in S/R integr_continuity
504    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
505    o update timeave pkg for wVel diagnostic.
506    checkpoint46j_pre
507    
508    checkpoint46i_post
509    o Clean up AIM package (and keep the results unchanged):
510      include CPP_OPTION and use IMPLICT NONE in all routines ;
511      declare all the variables _RL ; use _d 0 for all numerical constants.
512      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
513    
514    checkpoint46h_post
515    o cleaned up the use of rhoNil and rhoConst.
516      - rhoNil should only appear in the LINEAR equation of state, everywhere
517        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
518        and the dynamical equations are all divided by rhoConst
519    o introduced new parameter rhoConstFresh, a reference density of fresh
520      water, to remove the fresh water flux's dependence on rhoNil. The default
521      value is 999.8 kg/m^3
522    o cleanup up external_forcing.F and external_forcing_surf.F
523      - can now be used by both OCEANIC and OCEANICP
524    checkpoint46h_pre
525    
526     Added code to convert surface volume flux (fresh water) into
527     a mass flux when using P coordinates in the ocean (OCEANICP).
528     Note: It assumes you have set rho0=rhoConst=density of fresh water.
529    
530    checkpoint46g_post
531    o Include a new diagnostic variable phiHydLow for the ocean model
532      - in z-coordinates, it is the bottom pressure anomaly
533      - in p-coordinates, it is the sea surface elevation
534      - in both cases, these variable have global drift, reflecting the mass
535        drift in z-coordinates and the volume drift in p-coordinates
536      - included time averaging for phiHydLow, be aware of the drift!
537    o depth-dependent computation of Bo_surf for pressure coordinates
538      in the ocean (buoyancyRelation='OCEANICP')
539      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
540        Theta, Salinity, and Pressure in the parameter list. This routine is
541        presently contained in find_rho.F. This routine does not give the
542        correct density for 'POLY3', which would be a z-dependent reference
543        density.
544    o cleaned up find_rho
545      - removed obsolete 'eqn' from the parameter list.
546    o added two new verification experiments: gop and goz
547      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
548    checkpoint46g_pre
549    
550    checkpoint46f_post
551    o Enable tangent linear (forward mode) gradient checks:
552      - extended active file handling to g_... files
553      - added TANGENT_SIMULATION to theSimulationMode
554      - extended grdchk package accordingly
555    o added tangent linear setup in verification/carbon/code_ftl
556    o added adjoint setup in verification/front_relax/code_ad
557    
558    checkpoint46e_post
559    o Added new equation of state -> MDJWF
560      - EOS of McDougall et al., 2002, JAOT, submitted
561      - caveat: the equation of state is only valid for a smaller (more
562        realistic?) range of values than JMD95P/Z and UNESCO
563      - added masks to the calculation of pressure in store_pressure
564      - added more check values for density in check_eos (ini_eos.F), some of
565        the old check values are out of the range of the MDJWF-eos, so don't
566        expect perfect matches for those
567    checkpoint46e_pre
568    
569    checkpoint46d_post
570    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
571      'OCEANICP', also initialised field pressure correctly in ini_eos in the
572      case of pressure coordinates. eosType='JMD95Z' in
573      combination with buoyancyRelation='OCEANICP' now causes an error.
574    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
575      in find_alpha/beta.
576    checkpoint46d_pre
577    
578    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
579      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
580    
581    checkpoint46c_post
582    o Changes necessary for ocean in p-coordinates
583     -  Added new buoyancy relation = 'OCEANICP'
584     -  Added new parameters = gravitySign (this used to be contained inside
585        the factor dRdZ which I added when we first switched to R coordinates).
586     X GM/Redi is not compatible (yet)
587     X bottom drag and no-slip need to be debugged.
588    checkpoint46c_pre
589    
590    checkpoint46b_post
591    o Added new equation of state -> JMD95Z and JMD95P
592      - EOS of Jackett and McDougall, 1995, JAOT
593      - moved all EOS parameters into EOS.h
594      - new routines ini_eos.F, store_pressure.F
595    o Added UNESCO EOS, but not recommended because it requires
596      in-situ temperature (see JMD95)
597    o Modified formatting for knudsen2.f in utils/knudsen2 and added
598      unesco.f to be used with POLY3
599    checkpoint46b_pre
600    
601    checkpoint46a_post
602    o Added (atmospheric) pressure loading
603      - new field in FFIELDS.h, etc...
604      - new cpp flag ATMOSPHERIC_LOADING
605    o Changed hFacC to _hFacC in calc_phi_hyd.F
606    o Added SHORTWAVE_HEATING to some files for consistency
607    checkpoint46a_pre
608    
609    checkpoint46
610    further merges from release1_p5
611    o new ctrl package
612      - adopted from ECCO environment to enable optimization
613      - added Eliassen Palm fluxes to controls
614    o added Eliassen Palm flux controls to gradient check package
615    o cost package
616      - Compatible with new ctrl package
617      - added Eliassen Palm cost hooks
618      - modif's of existing cost functions
619    o Adjoint-related bug fixes in kpp:
620      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
621      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
622    o autodiff package
623      - flow directives:
624        + new for S/R do_the_model_io
625        + enhanced for S/R checkpoint
626        + new gmredi.flow
627      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
628        disable adcommon.h/g_common.h by default.
629      - fixed problem for adjoint of global_max
630    o modified verification/carbon/
631    o New setup for adjoint of global_ocean
632    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
633    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
634    o incorporated hooks for sponge layer code (external_forcing.F)
635    
636    checkpoint45d_post
637    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
638    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
639      (affects plume_on_slope "cg2d" output)
640    o add new parameter deltaTfreesurf for free-surface time stepping
641    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
642    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
643    o change phiMin in exp1 (to agree with documentation)
644    o add new flags:
645     - T,S forcing inside/outside Adams-Bashforth
646     - turn off temp,salt advection and/or forcing
647     - for each tracer, define internal flag for multiDimAdvection & A-B
648    o monitor: change definition of KE to check conservation of Energy
649    
650    checkpoint45c_post
651    o Removed f90 comments ("!")
652    o Modified initialisations to enable exf package for MITgcm
653      (without invoking ECCO_PACKAGE).
654    o modifications to gradient check package (Martin Losch)
655      - enable centered differences
656      - modified format of standard output
657    
658    checkpoint45b_post
659    o cleaned exchange calls in cg2d
660    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
661    o included CPP option SINGLE_LAYER_MODE in thermodynamics
662      to configure barotropic setup (Martin Losch)
663    o moved some initialisations within bi,bj loop in dynamics
664      (TAF flow dependency)
665    o in initialise_varia, moved call packages_init_variables
666      before convective_adjustment_init
667      (corresponding adjustment of TAF tape initialisation).
668    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
669    
670    checkpoint45a_post
671    o compute Rho over the whole domain (extend iMin,jMin indices)
672    o specific exchange for X-slice domain (case Ny=1)
673    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
674    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
675    
676    checkpoint44h_post = checkpoint45
677    o Fix to restore differentiability:
678      place at which packages_init_variables is called in
679      initialise_varia is crucial for reverse control flow.
680    o modifications in GMRedi to enable stable adjoint
681      (corresponding modif's in thermodynamics, dynamics)
682    o added missing hook for sponge layer code in external_forcing
683    o modified test cost functions
684    o storing in gad_advection (plus removal of write(0,*)!
685    o missing headers TR1.h added in convective_adjustment routines
686    o errorMessageUnit set non-equal zero in eeboot
687      (conflict on some platforms, e.g. IBM SP3)
688    o modified carbon verif.
689    
690    checkpoint44h_pre
691    o vertical grid option: allow to put the Interface at the middle between
692      2 cell-centers ; replace delZ in pkg/kpp by drF.
693    o GM Advective form: Tracers are advected using the residual transport (=
694      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
695    
696    checkpoint44g_post
697    o fix surface correction term in multiDimAdvection (affects plume_on_slope
698      results) ; ifdef missing in thermodynamics.F
699    
700    checkpoint44f_pre,checkpoint44f_post
701    o added PTRACERS package
702      This allows an arbitrary number of passive tracers to be integrated
703      forward simultaneously with the dynamicaly model.
704      + Implemented so far:
705        - basic forward algorithm (time-stepping, advection, diffusion, convection)
706        - I/O and checkpointing
707        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
708      + Not implemented so far:
709        - KPP
710        - OBCS
711      + No specific example supplied (yet) but global_ocean.90x40x15 has the
712        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
713        line in data.pkg.
714      + This package is disabled by default since it increases storage.
715    
716    
717    o testscript: added -cleanup option
718    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
719                 b) enable to filter 2D fields.
720    
721    checkpoint44e_pre,post
722    o re-wrote convective adjustment to use pre-calculated weights
723      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
724      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
725      Original calls to convect() still in place.
726    
727    chkpt44d_pre,post
728    o added missing EXCLUDE_MONITOR flags
729    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
730      (incompatible typ in MIN/MAX expressions caused problems
731      on IBM SP3)
732    o in genmake added variable MAKEDEPEND
733      plus resetting for case SunOS
734    o added timer_stats.c routine for IBM SP3
735    o removed variables in dynamics
736    !!! I forgot to create tag chkpt44d_pre !!!
737    !!! But chkpt44d_pre = chkpt44c_post    !!!
738    
739    o real fresh water flux implemented with non-linear free-surface.
740    
741    chkpt44c_pre,post
742    o few fix (mask in shap_s2, EmPmR in external_field_load,
743      USE_NATURAL_BCS in solve_for_P);
744    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
745    
746    checkpoint44b_pre/_post
747    o merge of relevant stuff from the ecco-branch:
748      - genmake: removed $S64 overwrite for case SunOS
749      - pkg/exf: update and corrections for field swapping and obcs
750      - pkg/ecco: parameter lists for the_model_main, the_main_loop
751                  harmonized between ECCO and MITgcm
752      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
753                      updated checkpointing_lev... lists for obcs
754      - model/src: minor changes in forward_step, plot_field
755                   added directive for divided adjoint in the_main_loop
756      - pkg/mdsio: added mdsio_gl_slice
757    
758    o check parameters & config (chkpt44a_pre,post)
759    o OBC and NonLin_FrSurf.
760    
761    checkpoint44
762    o fix bug in mom_vi_del2uv
763    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
764    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
765    o update AIM experiments (NCEP input files)
766    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
767    o added some stuff for AD
768    
769    checkpoint43
770    o added two new advection tests
771    o added global 4x4 degree ocean test
772    o added test of H&S94 with free surface on cube
773    o some final mods for gradient check, adjoint,...
774    
775    checkpoint42
776      Fixed AD-related problems:
777    o Store directives up-to-date with re-arranged Adams-Bashforth
778      (mainly thermodynamics.F)
779    o New store directives for multi-dim. advection schemes
780      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
781      * new common block and key passkey
782      (mainly gad_advection.F)
783    o Modified store directives for split of dynamics/thermodynamics
784      for the case ALLOW_KPP
785    o Cleaned argument list for timestep_tracer.F
786    
787    checkpoint41
788    o re-formatted/added comments in prologues of key subroutines
789      to work with protex
790    
791    checkpoint40
792    o moved calc_gs, calc_gt and calc_tr1 back to model/src
793    o added FLT (floats) package from Arne along with demo. experiment
794    o re-arranged Adams-Bashforth scheme for tracers to allow easier
795      implementation of forward-in-time forcing terms
796    o more mods for non-linear free-surface including new variable
797    o modified multi-dim method to work on cube
798    o bug fix in KPP (from DM)
799    
800    checkpoint40pre9
801    o added DST advection schemes
802    o fix MPI bug on SGI's
803    o modifications for non-linear free-surface
804    o fixed conditionals for fixed flow/passive tracer only mode
805    o added tension/strain form of stress tensor
806    o changes to commenting of arguments for TAF/TAMC
807    o added/updated many matlab scripts
808    o added multi-dimensional advection method for tracers
809      
810    checkpoint40pre8
811    o new package rw/
812      Added method for dumping intermediate local arrays:
813      mdsio_writetile - same as mdsio_writefield except works from inside
814                        bi,bj loop
815      mdsio_writelocal - same as mdsio_writetile except works for local
816                         arrays
817      write_local_r? - higher-level wrapper for mdsio_writelocal
818      Controlled by diagFreq. Defaults to zero (ie. no dumps)
819      Example given at end of mom_vecinv.F that dumps some local arrays.
820    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
821      control flux-form versus vector invariant code.
822      Switch is runtime flag vectorInvariantMomentum (defaults to false)
823      or genmake -DISABLE ...
824    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
825      (additional storing is now needed for case vecinv;
826      currently nothing implemented to switch this storing off
827      in case fluxform is used since no CPP flag available).
828    
829    checkpoint40pre7
830    o bug fix in dynamics.F
831      calc_viscosity called before k=1,Nr loop.
832    o added some #ifdef's ALLOW_PASSIVE_TRACER
833    o cleaned initialisations in ctrl_map_ini
834      related to TAF
835    
836    checkpoint40pre6
837    o split dynamics into thermodynamics & dynamics
838    o corresponding split of calc_diffusivity into
839      calc_diffusivity, calc_viscosity
840      (kpp_calc_diff, kpp_calc_visc).
841    o Added diffkr, kapgm to control variables
842    o bug fix in gmredi_slope_limit for ldd97
843    
844    checkpoint40pre5
845    o proper initialization of Adams-Bashforth time stepping
846      + uses forward step for very first step of model (iter=0)
847    o re-generated *all* output since almost all output is modified by this
848      change (sorry but we've been putting this one off for about 2 years)
849      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
850        *not* regenerated since they are already out of date and I don't
851        want to create the impression that they are suddenly working.
852    o removed KAP stuff for DEC's
853    o modified/added many .cvsignore files in */code and */input
854    o added new expt "solid-body.cs-32x32x1"
855      + this uses an alternative form of ini_curvilinear_grid.F which
856        is not necessarily any better than the current one...
857    
858    checkpoint40pre4
859    o added re-initialisations of utrans,vtrans,rtrans in
860      calc_common_factors which are crucial for TAF.
861    o extended iMin,jMin range for calc_common_factors,
862      calc_diffusivity
863    o added option ALLOW_PASSIVE_TRACER
864    o a few minor updates and fixes
865    
866    checkpoint40pre3
867    o created calc_gtr1.F for gad package
868    o split the_main_loop and re-introduced forward_step
869    o some recomputations of nIter0 for TAMC
870    
871    checkpoint40pre2
872    o Updated to latest branch of AJA, JMC
873    o Added gradient check package
874    o Added routines for passive tracer handling
875    o Added carbon sequestration sensitivity experiment
876    
877    checkpoint39
878     o Modifications and fixes to support TAMC
879       (mainly missing or wrong directives)
880     o Corrected common blocks when fooling TAMC to produce adjoint I/O
881       in addummy_in_stepping
882     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
883     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
884     o Included following packages:
885       cal: calendar
886       exf: external forcing
887       ecco: essential routines to control use of cal, exf
888             (NB: this is not the full ECCO environment)
889     o disabled some packages by default in genmake
890    
891    checkpoint38
892     o see notes_c37_adj.txt
893     o corrected wrong layer index in external_forcing_t
894     o replaced the_main_loop/forward_step by the_main_loop
895     o removed forceoutput from write_state
896       (replaced criteria for initial/final state)
897     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
898    
899    checkpoint37
900     o mdsio.F routine split and packaged in pkg/mdsio
901       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
902        used unless genmake -disable=mdsio)
903     o allow a more precise surface-geopotential gradient for the atmosphere
904       taking into account the change in space of Alpha (=1/rho) at the surface.
905     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
906       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
907     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
908       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
909       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
910     o Time-Average diagnostics defined as a pseudo package "timeave".
911     o pickup files : old pickup (before c35) did not work with new code (c35
912       and after) unless activating 2 commented lines in initialise-varia.
913     o Non-Hydrostatic pickup file Pb fixed.
914     o bug with Rigid-lid version (since c35) fixed.  
915    
916    checkpoint36
917     o implement Crank-Nickelson barotropic time-stepping
918     o recover Time-Average diagnostics
919     o fix Pb in checkpoint (PR#19)
920     o AIM become a standard package ; clean unused CPP_kees
921    
922    checkpoint35
923     o subtantial rewrite of dynamics.f
924     o allows staggered time-stepping
925     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
926     o added bottom drag (linear + quadratic)
927    
928    checkpoint34
929     o Modified exchange routines for correct reverse simulation.
930     o Added verification output to comply with bug fix in impldiff.F
931       as of c33 (exp2, natl_box).
932     o Corrected store directives in dynamics.F
933     o Corrected array boundaries in impldiff.F
934     o Corrected array dimensions in gmredi.
935       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
936     o Added routine GLOBAL_SUM_INT to global_sum.F
937     o Added mdsio_gl.F for ECCO purposes.
938    
939    checkpoint33
940     o Fixed bug in lower BC in impldiff.F
941     o Fixed confusion about units of forcing arrays in FFIELDS.h
942       namely Fu,Fv,Qnet,Qsw,EmPmR:
943       - Removed verification/natl_box/code/external_fields_scale.F
944         (did not differ from that in model/src)
945       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
946         (see FFIELDS.h for description)
947       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
948         kpp_calc.F and kpp_transport_t.F
949       - Removed model/src/external_fields_scale.F and calls to it
950       - verification/natl_box uses flux data with "atmospheric" sign so
951         a special version of external_fields_load.F is used to
952         change the data as it's read in. This way, the arrays
953         have the right units and signs at all times tha a user could
954         possibly use them.
955     o Corrected genmake to delete a temporary file during configuration
956    
957    checkpoint32
958     o Scaling of forcing fields moved from external_forcing.F to
959       external_fields_scale.F, called directly after loading fields.
960     o Surface relaxation terms added to surface tendency fields in
961       extra subroutine.
962     o impldiff.F changed to avoid storing by TAMC of huge intermediate
963       fields.
964     o Changes in GMRedi to comply with packaging structure.
965     o Modifications and bug fixes in KPP package.
966     o Verification experiment for KPP added (verification/nat_box/)
967    
968    checkpoint31
969     o Packages interface brought in line with defined standard
970       -> new routines packages_...F
971       -> changes in initialise_fixed.F, initialise_varia.F
972       -> enables initialisation interface for ECCO package
973     o Rescaling of external forcing fields immediately after read
974       (removed from external_forcing.F)
975       -> new: surface_fields_scale.F
976       -> affects ini_foorcing.F, external_fields_load.F
977     o Computation of surface tendencies before tendency updates.
978       -> new: external_forcing_surf.F
979     o Change of variable names useGMRedi, useKPP, useECCO
980     o Further changes in dynamics.F, impldiff.F for TAMC
981     o Tested for experiments 0, 2, 4.
982       - not yet tested for GMRedi.
983       - not yet tested for KPP.
984    
985    checkpoint30
986     o Updates for OBCs
987     o New experiment for test OBCs (internal_wave)
988     o New output.txt in verification/exp4/results/
989     o Updates for KPP: calculation of viscosity corrected, new variables
990       kpp_dumpFreq and kpp_taveFreq
991     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
992       and entry for T90 in genmake
993    
994    checkpoint29
995     o packaged KPP and GM/Redi
996    
997    checkpoint28
998     o Corrected initialization of hFacMin for difference vertical coordinates
999     o Modified calculation of partial cell thickness to more robust algorithm
1000     o config_summary.F: replaced write_1D_... by write_0D_...
1001       read_write.F: added subroutines write_0D_...
1002     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1003       included some initialisations required for TAMC.
1004     o routine calc_isoslopes: modified sqrt computation to make it
1005       differentiable for zero argument.
1006     o routines dynamics, impldiff:
1007       included store directives and tape key computations required for TAMC.
1008     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1009    
1010    checkpoint27
1011     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1012       formulation works properly with variable resolution.
1013     o restructured the calling tree between the_model_main() and dynamics()
1014     o split initialise() into initialise_fixed() and initialise_varia()
1015     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1016       in new routine ini_psurf()
1017    
1018    checkpoint26
1019     o moved some #ifdef in optional routines to encompass everything
1020       except the argument declarations. This was using up some memory.
1021     o fixed macros like _ADT to work with both versions of Linux cpp
1022     o cleaned up some unused and uninitialized variables
1023       (helps when debugging with strict compile options)
1024     o split up CPP_EEOPTIONS.h into options and macros
1025       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1026     o patch for 2 processor JAM mode
1027    
1028    checkpoint25
1029     o updates for OBCs and NH
1030     o dramatically reduced memory usage
1031     o added "JAM" routines for use on Artic network
1032     o parameterization of convection by implicit vertical diffusion
1033     o added a diagnostic of convective index
1034     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1035       (this is was partly for OBCs and NH but also in anticipation of
1036        an explicit free-surface option)
1037     o initial state input files for U and V
1038    
1039    checkpoint24
1040     o Removed some spurious "REAL"s
1041     o Updated KPP to latest version from JPL
1042     o Added a COS(latitude) in horizontal viscosity
1043    
1044    checkpoint23
1045     o Added del^4 diffusion for salt and temperature
1046     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1047    
1048    checkpoint22
1049     o Made many small changes: implicit none, format(i5), etc...
1050     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1051    
1052    checkpoint21
1053     o Introduced new I/O package that supports direct-access records (mdsio.F)
1054     o Split-up mid-level I/O routines
1055     o Updated input data for experiments 0,1,2,4 and 5
1056     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1057    
1058    checkpoint20
1059     o Tidied up open-boundaries some more
1060     o Added non-hydrostatic code
1061     o Fixed some input data
1062     o Modified MPI start-up to work in "coupled" context.
1063    
1064    checkpoint19
1065     o Tidied up directory structure for verification experiments.
1066     o Added new code for open boundaries.
1067     o Corrected advective terms near boundaries.
1068     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1069     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1070     o Split default parameters out of ini_parms.F into set_defaults.F.
1071    
1072    checkpoint18
1073     o Further changes for optional code generation with
1074       CPP - ugh!
1075    
1076    checkpoint17
1077     o Beginning to incorporating modularity
1078       for supporting atmos. and ocean configs.
1079     o Small changes for TAMC complinace
1080     o New ultra simple test case. Barotropic box
1081       configuration "exp0".
1082    
1083    checkpoint16
1084     o Minor changes to exchange routines to support
1085       accumulation in reverse mode. Adjoint of an
1086       assignment is an addition.
1087     o Changes to support compilation by TAMC (LR(1)
1088       syntax) and by g77 under Linux ( 72 character
1089       limit ).
1090    
1091    checkpoint15
1092     Rewrote exchange routines to allow
1093     o General tile <-> tile connectivity.
1094     o TAMC reverse mode flag ( is this really needed? )
1095     o Variable width overlap and exchange region widths.
1096     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1097       shmput/shmget, VIA, SYSV shmem and every other cool
1098       communication method.
1099    
1100    checkpoint14
1101     Consistent isomorphism chages made. These allow dynamical core
1102     to support both pressure and meters as a vertical coordinate.
1103    
1104    checkpoint13
1105     Release which corrects global_max problem and a couple
1106     of KGM time-averaging diagnostic errors. Also contains
1107     a double-gyre experiment setup as well as the baseline
1108     4 degree global template. The double gyre template is
1109     organised to allow it to be applied automatically to
1110     the baseline configuration.
1111    
1112    branch-point-rdot
1113     A few tidy-ups have been made bt the real point of this
1114     check-point (excuse the pun) is to allow a branch to be
1115     made for the purposes of adding the rDot alterations.
1116     I don't want to commit the rDot to the main-trunk until
1117     we've actually tested it...
1118    
1119    checkpoint12
1120     Tidy up and added generic genmake script (formerly
1121     configure script).
1122     Released to testers.
1123    
1124    checkpoint11
1125     Re-arranged initialise() and introduced ini_vertical_grid()
1126     and ini_masks_etc().
1127    
1128    checkpoint10
1129     Introduced the configure script.
1130     Separated out the diags package.
1131     Added template for writing time-averages of tile/intermediate quantities.
1132     Updated SIZE.h in exp2 and made the data big-endian.
1133    
1134    checkpoint9
1135     MPI fix. Filename changes (meta/data). salbin*y stuff.
1136     General tidy-up.
1137     SST.bin SSS.bin added to verification/exp2
1138    
1139    checkpoint8
1140     Inludes time-dependant forcing and time-averaging.
1141     Works at 4x4 and 2.8125x2.8125 global
1142    
1143    checkpoint7-4degree-ref
1144     Branch from checkpoint7. Released for application to
1145     global modeling and general modeling - process studies, regional
1146     model etc..
1147     Configured for verification/exp2 - 4 degree global, two process.
1148    
1149    checkpoint7
1150     Created by cnh
1151     Simple 4 degree global simulation
1152     configuration.
1153     Includes climatological wind,
1154     hydrography, bathymetry etc
1155     Does not include Heat Flux and E-P
1156    
1157  checkpoint6  checkpoint6
1158   Created by cnh   Created by cnh
1159   merged checkpoint5 with CD and   merged checkpoint5 with CD and

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