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revision 1.13 by cnh, Wed Sep 9 15:24:19 1998 UTC revision 1.164 by heimbach, Fri Jun 20 15:11:40 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint50h_post
7    o new package "land": provide surface BC for AIM.
8    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
9    o AIM: use true log-P extrapolation for near surface temp (= as in
10        F.Molteni paper) ; update aim.5l_cs output.
11    o New variable in PARM03 for more flexible pickups
12    o somewhat cleaned package initialisation sequence for
13      ctrl/ cost/ ecco/ in packages_... routines
14    
15    checkpoint50g_post
16    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
17      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
18      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
19        made the default because of faster convergence than ADI
20    
21    checkpoint50f_post
22    o exf totally restructured
23      - replaced all exf_set_ routines by one generic exf_set_gen.F
24        and made sure it's still differentiable
25      - split exf_getffields.F into new exf_bulkformulae.F
26      - exf_inscal_/exf_outscal_ suffixes consistent with field names
27      - updated adjoint/makefile and relevant verif. accordingly
28    
29    checkpoint50f_pre
30     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
31          + change Evap over land. (update aim.5l_cs output)
32     o added missing .cvsignores and made uniform across expts
33     o changed configuration of tidal_basin_2d expt
34     o added pkg/debug functions for tracing code in fatal crashes
35     o tidied pkg/monitor to use MONITOR_OPTIONS.h
36     o new fn in pkg/monitor to stop model if solution grows too big
37     o removed lots of single quotes from comments
38    
39    checkpoint50e_post
40    o make KPP work with PTRACERS
41     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
42       nearly a copy of kpp_transport_s
43     - there is no analogue to SurfaceTendencyS, so I have to use
44       gPtr(of the surface layer) instead
45    o add a new platform SunFire+mpi (SunFire 15000) to genmake
46    checkpoint50e_pre
47    
48    checkpoint50d_post
49    o change kpp output from multiple-record state files to single-record state
50      files analogous to write_state.F
51    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
52      analogous to the cg2d-related output.
53    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
54      so that writing to internal file fn (with length 512) fails.
55    checkpoint50d_pre
56    
57    checkpoint50c_post
58    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
59    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
60    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
61    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
62    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
63    
64    checkpoint50c_pre
65    Merging from release1_p13:
66    o bug fix for pkg/seaice dynamic solver
67    o Added SEAICE_initialHEFF to pkg/seaice
68    
69    checkpoint50b_post
70    o store u*,v* in gU,V instead of in guNm1,gvNm1
71    o in order to put the momForcing out of the Adams-Bashforth:
72      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
73      to timestep.F
74    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
75    o re-generate output for highly sensitive test-exp:
76       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
77    
78    checkpoint50b_pre
79    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
80    o corrected CPP option mismatch in exf_Bulk... functions for case
81      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
82    
83    checkpoint50a_post
84    o Bug fix for merging between c50 and KPP.
85      ikey was passed from thermodynamics to kpp_calc via
86      common block rather than being recomputed in kpp_calc,
87      in contradiction with new key itdkey.
88      New key ikppkey created, and tamc.h headers updated.
89    
90    checkpoint50
91    - 2nd step of merge with ecco-branch:
92      merge changes in ecco-branch back into main trunk
93    - bug fix in find_alpha
94    - more storing in gmredi_calc_tensor.F, kpp_routines.F
95    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
96    - merged some sliced AD support routines
97    
98    checkpoint49
99    merged from ecco-branch:
100    o exf:
101      - Enable initialisation of forcing fields to constant
102        (runtime) values.
103      - in exf_getffields.F
104        Reduce i-/j-loop to interior domain, discarding overlaps.
105        That also fixes wrong TAF-key computations for key_1, key_2
106        with bulf formulae.
107      - exf_init.F modify #ifdef for exf_init_evap
108      - exf_getffieldrec.F, ctrl_getrec.F
109        The following INT-usages are not safe:
110          fldsecs  = int(fldsecs/fldperiod)*fldperiod
111          fldcount = int(fldsecs/fldperiod) + 1
112        and were modified.
113    o autodiff: checkpoint_lev...
114      - updated storing for bulk formulae (some arrays were missing)
115      - added state for seaice package
116      - synchronized with main branch
117    o DIVA:
118      Modif.s in
119      - the_main_loop.F
120      - the_model_main.F
121      and added cost_final_restore.F cost_final_store.F
122      o With these changes, it is possible to fully separate
123        the first forward run to compute the cost function (mdthe_main_loop)
124        and adjoint runs over individual DIVA intervals (adthe_main_loop)
125        into separate model executions.
126        This enables better tuning of DIVA to given queue sizes.
127      o Loss of cost function value in consecutive DIVA runs is
128        fixed by storing to 'costfinal' file.
129      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
130        beginning/end of adjoint integration is accounted for.
131      The current changes apply to TAF-1.4.26.
132      TAF has one remaining bug, requiring one manual change
133      (see MITgcm manual).
134    o cal: synchronized between MAIN and ecco-branch
135    
136    checkpoint48i_post
137    o Changes to restore differentiability of code w.r.t. previous tag
138      (mostly adding new routines to make list and replacing
139      pressure by totPhiHyd).
140    o Updated and merged grdchk package
141      - has both ADM and TLM checks
142      - works for single- and multi-proc.
143      - output cleaned
144      - worked successfully for parallel DIVA
145    o genmake:
146      - Adding -platform=SP4
147      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
148    o Modif. for DIVA:
149      ctrl_unpack should not be called in intermediate DIVA interval.
150      (similar thing would apply for active files such as
151      tbar, sbar, psbar, which should not be reinitialised;
152      only relevant for ecco-branch)
153    
154    checkpoint48h_post
155    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
156    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
157    o Added SEAICE_initialHEFF to pkg/seaice
158    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
159    
160    checkpoint48g_post
161    --- EOS:
162    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
163      store total Potential in totPhyHyd for diagnostics & EOS.
164    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
165    --- Pressure/geopotential gradient:
166    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
167    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
168      ( changes results of global_ocean_pressure )
169    o NLFS + z-coord.: add eta*Rho' contribution.
170    o accurate phiHyd when using interface-W at the middle between 2 centers
171     ( changes results of ideal_2D_oce )
172    o includes r* 2nd term in potential gradient.
173    
174    checkpoint48f_post
175    Merging from release1_p12:
176    o Modifications for using pkg/exf with pkg/seaice
177      - improved description of the various forcing configurations
178      - added basic radiation bulk formulae to pkg/exf
179      - units/sign fix for evap computation in exf_getffields.F
180      - updated verification/global_with_exf/results/output.txt
181    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
182      (SBO) core products, including oceanic mass, center-of-mass,
183      angular, and bottom pressure (see pkg/sbo/README.sbo).
184    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
185      to avoid negative values in shallow regions.
186      - updated verification/natl_box/results/output.txt
187      - updated verification/lab_sea/results/output.txt
188    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
189    o Added useSingleCpuIO option (see PARAMS.h).
190    o Updated useSingleCpuIO option in mdsio_writefield.F to
191      work with multi-field files, e.g., for single-file pickup.
192    o pkg/seaice:
193      - bug fix in growth.F: QNET for no shortwave case
194      - added HeffFile for specifying initial sea-ice thickness
195      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
196    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
197      kpp_transport_t.F, forward_step.F, and the_main_loop.F
198    o pkg/seaice:
199      - adjoint-friendly modifications
200      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
201    
202    checkpoint48e_post
203    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
204    o dynamics: change definition of computational domain & adapt mom_fluxform
205      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
206    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
207        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
208        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
209        global_ocean.90x40x15 global_with_exf global_ocean_pressure
210        inverted_barometer solid-body.cs-32x32x1
211      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
212    
213    checkpoint48d_post
214    o in preparation for r*:
215     a) use pre-computed gradient of hydrostatic potential:
216        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
217     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
218        => affects results of glob_oce_pressure (different truncation error)  
219      update output.txt of ideal_2D_oce & global_ocean_pressure
220    
221    checkpoint48d_pre
222    o in preparation for r*:
223      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
224      pass the 2 comp. of the grad. as arguments to momentum S/R.
225      but for the moment, only used if it does not change the results.
226    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
227    
228    checkpoint48c_post
229    Modifications in treatment of initial flux forcing controls
230    to avoid extra storing of flux fields.
231    
232    checkpoint48c_pre
233    o Added tidal_basin_2d experiment (currently 1D!)
234    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
235    
236    checkpoint48b_post
237    o r* coordinate added in #ifdef NONLIN_FRSURF block.
238     (modification to pressure gradient not yet implemented)
239    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
240      (for U & V) that are used for vertical advection of momentum.
241    
242    checkpoint48a_post
243    o In preparation for r*, use temp. array to compute vertical transport
244       in flux-form momentum pkg. => change results of few test-exp.
245      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
246                        lab_sea, natl_box & plume_on_slope
247    
248    checkpoint48
249    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
250    
251    checkpoint47j_post
252    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
253    o moved adexch from forward_step to addummy_in_stepping
254    o added exch in ctrl_map_...
255    o aveFreq.=0. at end of cost_final to avoid overwrite in
256      reverse checkpointing loop
257    o Yet more changes in gmredi:
258      * adgmredi_calc_tensor
259        avoiding all recomputation of gmredi_slope_limit
260      * adgmredi_x/y/rtransport
261        added flag for excessive storing to avoid recomp. of
262        u/v/rtans, dTdx/y/z
263        -> this is not really necessary and very memory-consuming
264      * adgmredi_slope_psi:
265        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
266      * gmredi_slope_limit
267        re-activated full calculation of taperfct for case 'ac02'
268    o updating verification/ adjoints of carbon, global_ocean.90x40x15
269    
270    checkpoint47i_post
271    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
272    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
273      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
274    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
275    o gmredi: fix few bugs.
276    
277    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
278    This will be a good checkpoint to plug into the ecco-branch.
279    o few modif.'s to get latest version adjointed
280      (mainly kick out code in ini_linear_phisurf)
281    o modif's to run adjoint with exactConserv
282    o case GM_BOLUS_ADVEC should be cleaned
283      S/R gmredi_slope_psi should be cleaned
284    o verification/carbon now has exactConserv=.TRUE.
285    
286    checkpoint47g_post
287    o time-average AIM output: becomes independent from statvars time-average
288      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
289    o After TAF bug fix:
290      Tested adjoint of gmredi package.
291      Tests were done with checkpoint47 rather than with latest
292      checkpoint47f_post since the latter is broken for the adjoint
293      verification/carbon/ contains both ADM and TLM gradient checks.
294    Here they are, before they get changed/lost/stolen.
295    Mostly modif.'s to fix numerical sensitivities.
296    Gradient checks OK for
297    - GM_taper_scheme:
298      * clipping
299      * ac02
300      * linear
301      * glw91
302      * dm95
303      * ldd97
304    - GMREDI_OPTIONS:
305      * GM_VISBECK_VARIABLE_K
306      * GM_NON_UNITY_DIAGONAL
307      * GM_EXTRA_DIAGONAL
308      * GM_BOLUS_ADVEC
309    in conjunction with data.gmredi parameters to be checked in
310    in a few minutes under verification/carbon/code/
311    
312    checkpoint47f_post
313    Merging from release1_p10:
314    o modifications for using pkg/exf with pkg/seaice
315      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
316        and SEAICE_EXTERNAL_FLUXES
317      - pkg/exf CPP options EXF_READ_EVAP and
318        EXF_NO_BULK_COMPUTATIONS
319      - usage examples are Experiments 8 and 9 in
320        verification/lab_sea/README
321      - verification/lab_sea default experiment now uses
322        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
323    
324    checkpoint47e_post
325    o created a tag prior to creating a branch
326    
327    checkpoint47d_post
328    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
329      at the bottom boundary had an erroneous half slip boundary condition
330    o added bottom drag and no slip boundary condition capabilities to
331      oceanic pressure coordinates code
332    o added new verification experiment global_ocean_pressure, this experiment is
333      also described in the tutorial section of the manual
334    checkpoint47d_pre
335    
336    checkpoint47c_post
337    o Added a verification experiment for a global cubed-sphere ocean run
338      -  verification/global_ocean.cubed32x32x30
339      -  uses pkg/therm_seaice and pkg/bulk_forcing
340    
341    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
342    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
343      when using P-coordinate; only implemented for atmospheric config.
344    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
345      NOTES: requires option NONLIN_FRSURF to be "#define".
346    o update advect_xz/results/output.txt (left from checkpoint44g_post)
347    
348    checkpoint47b_post
349    Merging from release1_p9:
350    o pkg/seaice
351      - removed GOTO's and added taf directives
352      - double precision constants to reduce the g77 (Linux)
353        to F77 (SGI) differences reported in release1_p8
354    o tools/genmake
355      - added SGI options
356    o verification/testscript
357      - updated to that of checkpoint47a_post
358    o verification/global_ocean.90x40x15/input/eedata
359      - modified for SGI f77 compatibility
360    o verification/lab_sea
361      - added description of sea-ice model
362      - added missing matlab routines
363      - added test of thermodynamics parallelization
364    
365    checkpoint47a_post
366    o new pkg: aim_v23
367     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
368       for now, keep the same surface forcing as before.
369     - Part-Cell implemented into AIM; check that Heat & Water are conserved
370     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
371     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
372    o add diagnostic of surface correction term in monitor output
373    
374    o bulk_force and therm_seaice
375    - Two packages:  bulk_force (Bulk forcing)
376      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
377    - Earlier integration from Stephaine Dutkiewicz
378      and Patrick Heimbach.
379    - Two ifdef statements for compile time,
380       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
381    
382    checkpoint47
383    differentiable version of checkpoint46n_post
384    o bug fix in quasihydrostaticterms
385    o * "clean" adjoint code (in terms of extensive recomputations)
386        can now be obtained for all GMREDI options (i.e. for
387        - GM_VISBECK_VARIABLE_K
388        - GM_NON_UNITY_DIAGONAL
389        - GM_EXTRA_DIAGONAL
390        - GM_BOLUS_ADVEC )
391      * However, wrong gradient check problem remains unsolved.
392      * New CPP options have been introduced for different
393        tapering schemes
394    o external_fields_load now part of differentiation list
395    o pressure needs multiple storing;
396      would be nice to have store_pressure at beginning or
397      end of forward_step, e.g. by having phiHyd global (5-dim.)
398      (NB: pressure is needed for certain cases in find_rho,
399      which is also invoked through convective_adjustment).
400    o recomputations in find_rho for cases
401     'JMD95'/'UNESCO' or 'MDJWF' are OK.
402    o #define ATMOSPHERIC_LOADING should be differentiable
403    o ini_forcing shifted to begining of initialise_varia
404    o Incorporating QNVS line search routines into MITgcm
405      (this is separate code, and therefore not under pkg)
406      lsopt/, optim/
407    o Updated verification/carbon/
408      - #define GM_VISBECK_VARIABLE_K
409      - GM_taper_scheme    = 'ldd97'    
410    
411    checkpoint46n_post
412    Merging from release1_p8:
413    o verification/natl_box:
414      updating new external_fields_load routine
415    o New package: pkg/seaice
416      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
417      The sea-ice code is based on Hibler (1979-1980).
418      Two sea-ice dynamic solvers, ADI and LSR, are included.
419      In addition to computing prognostic sea-ice variables and diagnosing
420      the forcing/external data fields that drive the ocean model,
421      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
422      The implied surface heat flux is then stored in variable
423      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
424      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
425      non-local transport term.  Because this call precedes model
426      thermodynamics, temperature under sea-ice may not be "exactly" at
427      the freezing point by the time theta is dumped or time-averaged.
428      N.B.: fairly large differences in accuracy occur across
429            different platforms/compilers; comparison between
430            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
431            generated output gives:
432       T           S           U           V
433      C D M    c        m  s        m  s        m  s        m  s
434      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
435      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
436      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
437    
438      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
439    o GAD:
440      - generated new common blocks to account for call of
441        same gad routines with differing traceridentities
442        (needed to modify tracerIdentity indices in GAD.h)
443      - generated separate common blocks for case useCubedSphereExchange
444        (Department of Futurology)
445      - parameter lists to gmredi_?transport: added tracerIdentity
446      - added new key indices to tamc.h
447    o external_fields_load:
448      - added this routine to TAF list
449      - needed to make some common blocks global and additional storing
450        along the same lines as exf package (checkpoint_lev?_directives.h)
451    o exf:
452      updated external forcing package
453      - bug fixes carried over from ecco-branch
454        (missing OBCS_OPTIONS.h in two routines)
455      - enable easy to use "no forcing".
456      - added exf I/O for atmospheric loading
457      - added exf I/O for runoff data
458      - transfered scaling between exf <-> MITgcm to exf namelist
459    o Adding new verification experiment global_with_exf.
460      This verification experiment is almost identical to the
461      global_ocean.90x40x15 experiment, except that it uses
462      the exf (and cal) package instead of the
463      external_fields_load routine (cf README file).
464    
465    checkpoint46m_post
466    o modified testscript to return -- when there are no lines of "%MON" output
467    o added new flag "quasiHydrostatic" for QH mode
468      and new routine quasihydrostaticterms()
469    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
470      New routine: mom_u_coriolis_nh()
471    o fixed sign of non-hydrostatic metric terms in u and v equations.
472      Depend on correct sign of gravitySign.
473    o added work.pc* to .cvsignore in aim directories using ifc
474    o introduced flag for controllin non-hydrostatic metric terms
475    o removed gravitySign from PARM04
476    o switched to g77/ifc from pgf77 in aim experiments
477    
478    checkpoint46l_post
479    o made convective adjustment work with pressure coordinates:
480     - changed the direction of k-loop in convective_adjustment.F for the
481       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
482     - adjusted the reference pressure k-index in convective_adjustment.F
483     - adjusted the convection condition in convect.F (in analogy to
484       calc_ivdc.F)
485     - convective_adjustment no longer computes anything on the halos
486     - removed the warnings about negative salinity from find_rho.F and
487       find_alpha.F; instead the new routine look_for_neg_salinity, called
488       at the beginning of find_rho, find_alpha, and find_beta, does a
489       check of the entire slice, if CPP-option
490       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
491    checkpoint46l_pre
492    
493    checkpoint46k_post
494    o fixed the verification/global_ocean.90x40x15 experiment:
495     - new bathymetry (the world according to A., JMC, and M.)
496     - new initial fields and forcing fields (*.bin files)
497     - new POLY3.COEFFS (for the next release one should switch to a full
498       equation of state: JMD95P or MDJWF)
499     - fixed several errors and redundancies in the data file
500     - experiment uses looped cells
501     - added matlab directory with diagnostic scripts for plotting of output
502    
503    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
504     - read AIM physics parameters from a file (data.aimphys)
505     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
506    
507    checkpoint46j_post
508    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
509    o move wVel computation at the end of the time step, in S/R integr_continuity
510    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
511    o update timeave pkg for wVel diagnostic.
512    checkpoint46j_pre
513    
514    checkpoint46i_post
515    o Clean up AIM package (and keep the results unchanged):
516      include CPP_OPTION and use IMPLICT NONE in all routines ;
517      declare all the variables _RL ; use _d 0 for all numerical constants.
518      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
519    
520    checkpoint46h_post
521    o cleaned up the use of rhoNil and rhoConst.
522      - rhoNil should only appear in the LINEAR equation of state, everywhere
523        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
524        and the dynamical equations are all divided by rhoConst
525    o introduced new parameter rhoConstFresh, a reference density of fresh
526      water, to remove the fresh water flux's dependence on rhoNil. The default
527      value is 999.8 kg/m^3
528    o cleanup up external_forcing.F and external_forcing_surf.F
529      - can now be used by both OCEANIC and OCEANICP
530    checkpoint46h_pre
531    
532     Added code to convert surface volume flux (fresh water) into
533     a mass flux when using P coordinates in the ocean (OCEANICP).
534     Note: It assumes you have set rho0=rhoConst=density of fresh water.
535    
536    checkpoint46g_post
537    o Include a new diagnostic variable phiHydLow for the ocean model
538      - in z-coordinates, it is the bottom pressure anomaly
539      - in p-coordinates, it is the sea surface elevation
540      - in both cases, these variable have global drift, reflecting the mass
541        drift in z-coordinates and the volume drift in p-coordinates
542      - included time averaging for phiHydLow, be aware of the drift!
543    o depth-dependent computation of Bo_surf for pressure coordinates
544      in the ocean (buoyancyRelation='OCEANICP')
545      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
546        Theta, Salinity, and Pressure in the parameter list. This routine is
547        presently contained in find_rho.F. This routine does not give the
548        correct density for 'POLY3', which would be a z-dependent reference
549        density.
550    o cleaned up find_rho
551      - removed obsolete 'eqn' from the parameter list.
552    o added two new verification experiments: gop and goz
553      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
554    checkpoint46g_pre
555    
556    checkpoint46f_post
557    o Enable tangent linear (forward mode) gradient checks:
558      - extended active file handling to g_... files
559      - added TANGENT_SIMULATION to theSimulationMode
560      - extended grdchk package accordingly
561    o added tangent linear setup in verification/carbon/code_ftl
562    o added adjoint setup in verification/front_relax/code_ad
563    
564    checkpoint46e_post
565    o Added new equation of state -> MDJWF
566      - EOS of McDougall et al., 2002, JAOT, submitted
567      - caveat: the equation of state is only valid for a smaller (more
568        realistic?) range of values than JMD95P/Z and UNESCO
569      - added masks to the calculation of pressure in store_pressure
570      - added more check values for density in check_eos (ini_eos.F), some of
571        the old check values are out of the range of the MDJWF-eos, so don't
572        expect perfect matches for those
573    checkpoint46e_pre
574    
575    checkpoint46d_post
576    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
577      'OCEANICP', also initialised field pressure correctly in ini_eos in the
578      case of pressure coordinates. eosType='JMD95Z' in
579      combination with buoyancyRelation='OCEANICP' now causes an error.
580    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
581      in find_alpha/beta.
582    checkpoint46d_pre
583    
584    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
585      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
586    
587    checkpoint46c_post
588    o Changes necessary for ocean in p-coordinates
589     -  Added new buoyancy relation = 'OCEANICP'
590     -  Added new parameters = gravitySign (this used to be contained inside
591        the factor dRdZ which I added when we first switched to R coordinates).
592     X GM/Redi is not compatible (yet)
593     X bottom drag and no-slip need to be debugged.
594    checkpoint46c_pre
595    
596    checkpoint46b_post
597    o Added new equation of state -> JMD95Z and JMD95P
598      - EOS of Jackett and McDougall, 1995, JAOT
599      - moved all EOS parameters into EOS.h
600      - new routines ini_eos.F, store_pressure.F
601    o Added UNESCO EOS, but not recommended because it requires
602      in-situ temperature (see JMD95)
603    o Modified formatting for knudsen2.f in utils/knudsen2 and added
604      unesco.f to be used with POLY3
605    checkpoint46b_pre
606    
607    checkpoint46a_post
608    o Added (atmospheric) pressure loading
609      - new field in FFIELDS.h, etc...
610      - new cpp flag ATMOSPHERIC_LOADING
611    o Changed hFacC to _hFacC in calc_phi_hyd.F
612    o Added SHORTWAVE_HEATING to some files for consistency
613    checkpoint46a_pre
614    
615    checkpoint46
616    further merges from release1_p5
617    o new ctrl package
618      - adopted from ECCO environment to enable optimization
619      - added Eliassen Palm fluxes to controls
620    o added Eliassen Palm flux controls to gradient check package
621    o cost package
622      - Compatible with new ctrl package
623      - added Eliassen Palm cost hooks
624      - modif's of existing cost functions
625    o Adjoint-related bug fixes in kpp:
626      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
627      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
628    o autodiff package
629      - flow directives:
630        + new for S/R do_the_model_io
631        + enhanced for S/R checkpoint
632        + new gmredi.flow
633      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
634        disable adcommon.h/g_common.h by default.
635      - fixed problem for adjoint of global_max
636    o modified verification/carbon/
637    o New setup for adjoint of global_ocean
638    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
639    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
640    o incorporated hooks for sponge layer code (external_forcing.F)
641    
642    checkpoint45d_post
643    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
644    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
645      (affects plume_on_slope "cg2d" output)
646    o add new parameter deltaTfreesurf for free-surface time stepping
647    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
648    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
649    o change phiMin in exp1 (to agree with documentation)
650    o add new flags:
651     - T,S forcing inside/outside Adams-Bashforth
652     - turn off temp,salt advection and/or forcing
653     - for each tracer, define internal flag for multiDimAdvection & A-B
654    o monitor: change definition of KE to check conservation of Energy
655    
656    checkpoint45c_post
657    o Removed f90 comments ("!")
658    o Modified initialisations to enable exf package for MITgcm
659      (without invoking ECCO_PACKAGE).
660    o modifications to gradient check package (Martin Losch)
661      - enable centered differences
662      - modified format of standard output
663    
664    checkpoint45b_post
665    o cleaned exchange calls in cg2d
666    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
667    o included CPP option SINGLE_LAYER_MODE in thermodynamics
668      to configure barotropic setup (Martin Losch)
669    o moved some initialisations within bi,bj loop in dynamics
670      (TAF flow dependency)
671    o in initialise_varia, moved call packages_init_variables
672      before convective_adjustment_init
673      (corresponding adjustment of TAF tape initialisation).
674    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
675    
676    checkpoint45a_post
677    o compute Rho over the whole domain (extend iMin,jMin indices)
678    o specific exchange for X-slice domain (case Ny=1)
679    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
680    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
681    
682    checkpoint44h_post = checkpoint45
683    o Fix to restore differentiability:
684      place at which packages_init_variables is called in
685      initialise_varia is crucial for reverse control flow.
686    o modifications in GMRedi to enable stable adjoint
687      (corresponding modif's in thermodynamics, dynamics)
688    o added missing hook for sponge layer code in external_forcing
689    o modified test cost functions
690    o storing in gad_advection (plus removal of write(0,*)!
691    o missing headers TR1.h added in convective_adjustment routines
692    o errorMessageUnit set non-equal zero in eeboot
693      (conflict on some platforms, e.g. IBM SP3)
694    o modified carbon verif.
695    
696    checkpoint44h_pre
697    o vertical grid option: allow to put the Interface at the middle between
698      2 cell-centers ; replace delZ in pkg/kpp by drF.
699    o GM Advective form: Tracers are advected using the residual transport (=
700      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
701    
702    checkpoint44g_post
703    o fix surface correction term in multiDimAdvection (affects plume_on_slope
704      results) ; ifdef missing in thermodynamics.F
705    
706    checkpoint44f_pre,checkpoint44f_post
707    o added PTRACERS package
708      This allows an arbitrary number of passive tracers to be integrated
709      forward simultaneously with the dynamicaly model.
710      + Implemented so far:
711        - basic forward algorithm (time-stepping, advection, diffusion, convection)
712        - I/O and checkpointing
713        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
714      + Not implemented so far:
715        - KPP
716        - OBCS
717      + No specific example supplied (yet) but global_ocean.90x40x15 has the
718        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
719        line in data.pkg.
720      + This package is disabled by default since it increases storage.
721    
722    
723    o testscript: added -cleanup option
724    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
725                 b) enable to filter 2D fields.
726    
727    checkpoint44e_pre,post
728    o re-wrote convective adjustment to use pre-calculated weights
729      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
730      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
731      Original calls to convect() still in place.
732    
733    chkpt44d_pre,post
734    o added missing EXCLUDE_MONITOR flags
735    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
736      (incompatible typ in MIN/MAX expressions caused problems
737      on IBM SP3)
738    o in genmake added variable MAKEDEPEND
739      plus resetting for case SunOS
740    o added timer_stats.c routine for IBM SP3
741    o removed variables in dynamics
742    !!! I forgot to create tag chkpt44d_pre !!!
743    !!! But chkpt44d_pre = chkpt44c_post    !!!
744    
745    o real fresh water flux implemented with non-linear free-surface.
746    
747    chkpt44c_pre,post
748    o few fix (mask in shap_s2, EmPmR in external_field_load,
749      USE_NATURAL_BCS in solve_for_P);
750    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
751    
752    checkpoint44b_pre/_post
753    o merge of relevant stuff from the ecco-branch:
754      - genmake: removed $S64 overwrite for case SunOS
755      - pkg/exf: update and corrections for field swapping and obcs
756      - pkg/ecco: parameter lists for the_model_main, the_main_loop
757                  harmonized between ECCO and MITgcm
758      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
759                      updated checkpointing_lev... lists for obcs
760      - model/src: minor changes in forward_step, plot_field
761                   added directive for divided adjoint in the_main_loop
762      - pkg/mdsio: added mdsio_gl_slice
763    
764    o check parameters & config (chkpt44a_pre,post)
765    o OBC and NonLin_FrSurf.
766    
767    checkpoint44
768    o fix bug in mom_vi_del2uv
769    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
770    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
771    o update AIM experiments (NCEP input files)
772    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
773    o added some stuff for AD
774    
775    checkpoint43
776    o added two new advection tests
777    o added global 4x4 degree ocean test
778    o added test of H&S94 with free surface on cube
779    o some final mods for gradient check, adjoint,...
780    
781    checkpoint42
782      Fixed AD-related problems:
783    o Store directives up-to-date with re-arranged Adams-Bashforth
784      (mainly thermodynamics.F)
785    o New store directives for multi-dim. advection schemes
786      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
787      * new common block and key passkey
788      (mainly gad_advection.F)
789    o Modified store directives for split of dynamics/thermodynamics
790      for the case ALLOW_KPP
791    o Cleaned argument list for timestep_tracer.F
792    
793    checkpoint41
794    o re-formatted/added comments in prologues of key subroutines
795      to work with protex
796    
797    checkpoint40
798    o moved calc_gs, calc_gt and calc_tr1 back to model/src
799    o added FLT (floats) package from Arne along with demo. experiment
800    o re-arranged Adams-Bashforth scheme for tracers to allow easier
801      implementation of forward-in-time forcing terms
802    o more mods for non-linear free-surface including new variable
803    o modified multi-dim method to work on cube
804    o bug fix in KPP (from DM)
805    
806    checkpoint40pre9
807    o added DST advection schemes
808    o fix MPI bug on SGI's
809    o modifications for non-linear free-surface
810    o fixed conditionals for fixed flow/passive tracer only mode
811    o added tension/strain form of stress tensor
812    o changes to commenting of arguments for TAF/TAMC
813    o added/updated many matlab scripts
814    o added multi-dimensional advection method for tracers
815      
816    checkpoint40pre8
817    o new package rw/
818      Added method for dumping intermediate local arrays:
819      mdsio_writetile - same as mdsio_writefield except works from inside
820                        bi,bj loop
821      mdsio_writelocal - same as mdsio_writetile except works for local
822                         arrays
823      write_local_r? - higher-level wrapper for mdsio_writelocal
824      Controlled by diagFreq. Defaults to zero (ie. no dumps)
825      Example given at end of mom_vecinv.F that dumps some local arrays.
826    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
827      control flux-form versus vector invariant code.
828      Switch is runtime flag vectorInvariantMomentum (defaults to false)
829      or genmake -DISABLE ...
830    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
831      (additional storing is now needed for case vecinv;
832      currently nothing implemented to switch this storing off
833      in case fluxform is used since no CPP flag available).
834    
835    checkpoint40pre7
836    o bug fix in dynamics.F
837      calc_viscosity called before k=1,Nr loop.
838    o added some #ifdef's ALLOW_PASSIVE_TRACER
839    o cleaned initialisations in ctrl_map_ini
840      related to TAF
841    
842    checkpoint40pre6
843    o split dynamics into thermodynamics & dynamics
844    o corresponding split of calc_diffusivity into
845      calc_diffusivity, calc_viscosity
846      (kpp_calc_diff, kpp_calc_visc).
847    o Added diffkr, kapgm to control variables
848    o bug fix in gmredi_slope_limit for ldd97
849    
850    checkpoint40pre5
851    o proper initialization of Adams-Bashforth time stepping
852      + uses forward step for very first step of model (iter=0)
853    o re-generated *all* output since almost all output is modified by this
854      change (sorry but we've been putting this one off for about 2 years)
855      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
856        *not* regenerated since they are already out of date and I don't
857        want to create the impression that they are suddenly working.
858    o removed KAP stuff for DEC's
859    o modified/added many .cvsignore files in */code and */input
860    o added new expt "solid-body.cs-32x32x1"
861      + this uses an alternative form of ini_curvilinear_grid.F which
862        is not necessarily any better than the current one...
863    
864    checkpoint40pre4
865    o added re-initialisations of utrans,vtrans,rtrans in
866      calc_common_factors which are crucial for TAF.
867    o extended iMin,jMin range for calc_common_factors,
868      calc_diffusivity
869    o added option ALLOW_PASSIVE_TRACER
870    o a few minor updates and fixes
871    
872    checkpoint40pre3
873    o created calc_gtr1.F for gad package
874    o split the_main_loop and re-introduced forward_step
875    o some recomputations of nIter0 for TAMC
876    
877    checkpoint40pre2
878    o Updated to latest branch of AJA, JMC
879    o Added gradient check package
880    o Added routines for passive tracer handling
881    o Added carbon sequestration sensitivity experiment
882    
883    checkpoint39
884     o Modifications and fixes to support TAMC
885       (mainly missing or wrong directives)
886     o Corrected common blocks when fooling TAMC to produce adjoint I/O
887       in addummy_in_stepping
888     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
889     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
890     o Included following packages:
891       cal: calendar
892       exf: external forcing
893       ecco: essential routines to control use of cal, exf
894             (NB: this is not the full ECCO environment)
895     o disabled some packages by default in genmake
896    
897    checkpoint38
898     o see notes_c37_adj.txt
899     o corrected wrong layer index in external_forcing_t
900     o replaced the_main_loop/forward_step by the_main_loop
901     o removed forceoutput from write_state
902       (replaced criteria for initial/final state)
903     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
904    
905    checkpoint37
906     o mdsio.F routine split and packaged in pkg/mdsio
907       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
908        used unless genmake -disable=mdsio)
909     o allow a more precise surface-geopotential gradient for the atmosphere
910       taking into account the change in space of Alpha (=1/rho) at the surface.
911     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
912       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
913     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
914       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
915       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
916     o Time-Average diagnostics defined as a pseudo package "timeave".
917     o pickup files : old pickup (before c35) did not work with new code (c35
918       and after) unless activating 2 commented lines in initialise-varia.
919     o Non-Hydrostatic pickup file Pb fixed.
920     o bug with Rigid-lid version (since c35) fixed.  
921    
922    checkpoint36
923     o implement Crank-Nickelson barotropic time-stepping
924     o recover Time-Average diagnostics
925     o fix Pb in checkpoint (PR#19)
926     o AIM become a standard package ; clean unused CPP_kees
927    
928    checkpoint35
929     o subtantial rewrite of dynamics.f
930     o allows staggered time-stepping
931     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
932     o added bottom drag (linear + quadratic)
933    
934    checkpoint34
935     o Modified exchange routines for correct reverse simulation.
936     o Added verification output to comply with bug fix in impldiff.F
937       as of c33 (exp2, natl_box).
938     o Corrected store directives in dynamics.F
939     o Corrected array boundaries in impldiff.F
940     o Corrected array dimensions in gmredi.
941       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
942     o Added routine GLOBAL_SUM_INT to global_sum.F
943     o Added mdsio_gl.F for ECCO purposes.
944    
945    checkpoint33
946     o Fixed bug in lower BC in impldiff.F
947     o Fixed confusion about units of forcing arrays in FFIELDS.h
948       namely Fu,Fv,Qnet,Qsw,EmPmR:
949       - Removed verification/natl_box/code/external_fields_scale.F
950         (did not differ from that in model/src)
951       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
952         (see FFIELDS.h for description)
953       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
954         kpp_calc.F and kpp_transport_t.F
955       - Removed model/src/external_fields_scale.F and calls to it
956       - verification/natl_box uses flux data with "atmospheric" sign so
957         a special version of external_fields_load.F is used to
958         change the data as it's read in. This way, the arrays
959         have the right units and signs at all times tha a user could
960         possibly use them.
961     o Corrected genmake to delete a temporary file during configuration
962    
963    checkpoint32
964     o Scaling of forcing fields moved from external_forcing.F to
965       external_fields_scale.F, called directly after loading fields.
966     o Surface relaxation terms added to surface tendency fields in
967       extra subroutine.
968     o impldiff.F changed to avoid storing by TAMC of huge intermediate
969       fields.
970     o Changes in GMRedi to comply with packaging structure.
971     o Modifications and bug fixes in KPP package.
972     o Verification experiment for KPP added (verification/nat_box/)
973    
974    checkpoint31
975     o Packages interface brought in line with defined standard
976       -> new routines packages_...F
977       -> changes in initialise_fixed.F, initialise_varia.F
978       -> enables initialisation interface for ECCO package
979     o Rescaling of external forcing fields immediately after read
980       (removed from external_forcing.F)
981       -> new: surface_fields_scale.F
982       -> affects ini_foorcing.F, external_fields_load.F
983     o Computation of surface tendencies before tendency updates.
984       -> new: external_forcing_surf.F
985     o Change of variable names useGMRedi, useKPP, useECCO
986     o Further changes in dynamics.F, impldiff.F for TAMC
987     o Tested for experiments 0, 2, 4.
988       - not yet tested for GMRedi.
989       - not yet tested for KPP.
990    
991    checkpoint30
992     o Updates for OBCs
993     o New experiment for test OBCs (internal_wave)
994     o New output.txt in verification/exp4/results/
995     o Updates for KPP: calculation of viscosity corrected, new variables
996       kpp_dumpFreq and kpp_taveFreq
997     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
998       and entry for T90 in genmake
999    
1000    checkpoint29
1001     o packaged KPP and GM/Redi
1002    
1003    checkpoint28
1004     o Corrected initialization of hFacMin for difference vertical coordinates
1005     o Modified calculation of partial cell thickness to more robust algorithm
1006     o config_summary.F: replaced write_1D_... by write_0D_...
1007       read_write.F: added subroutines write_0D_...
1008     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1009       included some initialisations required for TAMC.
1010     o routine calc_isoslopes: modified sqrt computation to make it
1011       differentiable for zero argument.
1012     o routines dynamics, impldiff:
1013       included store directives and tape key computations required for TAMC.
1014     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1015    
1016    checkpoint27
1017     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1018       formulation works properly with variable resolution.
1019     o restructured the calling tree between the_model_main() and dynamics()
1020     o split initialise() into initialise_fixed() and initialise_varia()
1021     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1022       in new routine ini_psurf()
1023    
1024    checkpoint26
1025     o moved some #ifdef in optional routines to encompass everything
1026       except the argument declarations. This was using up some memory.
1027     o fixed macros like _ADT to work with both versions of Linux cpp
1028     o cleaned up some unused and uninitialized variables
1029       (helps when debugging with strict compile options)
1030     o split up CPP_EEOPTIONS.h into options and macros
1031       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1032     o patch for 2 processor JAM mode
1033    
1034    checkpoint25
1035     o updates for OBCs and NH
1036     o dramatically reduced memory usage
1037     o added "JAM" routines for use on Artic network
1038     o parameterization of convection by implicit vertical diffusion
1039     o added a diagnostic of convective index
1040     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1041       (this is was partly for OBCs and NH but also in anticipation of
1042        an explicit free-surface option)
1043     o initial state input files for U and V
1044    
1045    checkpoint24
1046     o Removed some spurious "REAL"s
1047     o Updated KPP to latest version from JPL
1048     o Added a COS(latitude) in horizontal viscosity
1049    
1050    checkpoint23
1051     o Added del^4 diffusion for salt and temperature
1052     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1053    
1054    checkpoint22
1055     o Made many small changes: implicit none, format(i5), etc...
1056     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1057    
1058    checkpoint21
1059     o Introduced new I/O package that supports direct-access records (mdsio.F)
1060     o Split-up mid-level I/O routines
1061     o Updated input data for experiments 0,1,2,4 and 5
1062     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1063    
1064    checkpoint20
1065     o Tidied up open-boundaries some more
1066     o Added non-hydrostatic code
1067     o Fixed some input data
1068     o Modified MPI start-up to work in "coupled" context.
1069    
1070    checkpoint19
1071     o Tidied up directory structure for verification experiments.
1072     o Added new code for open boundaries.
1073     o Corrected advective terms near boundaries.
1074     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1075     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1076     o Split default parameters out of ini_parms.F into set_defaults.F.
1077    
1078    checkpoint18
1079     o Further changes for optional code generation with
1080       CPP - ugh!
1081    
1082    checkpoint17
1083     o Beginning to incorporating modularity
1084       for supporting atmos. and ocean configs.
1085     o Small changes for TAMC complinace
1086     o New ultra simple test case. Barotropic box
1087       configuration "exp0".
1088    
1089    checkpoint16
1090     o Minor changes to exchange routines to support
1091       accumulation in reverse mode. Adjoint of an
1092       assignment is an addition.
1093     o Changes to support compilation by TAMC (LR(1)
1094       syntax) and by g77 under Linux ( 72 character
1095       limit ).
1096    
1097    checkpoint15
1098     Rewrote exchange routines to allow
1099     o General tile <-> tile connectivity.
1100     o TAMC reverse mode flag ( is this really needed? )
1101     o Variable width overlap and exchange region widths.
1102     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1103       shmput/shmget, VIA, SYSV shmem and every other cool
1104       communication method.
1105    
1106  checkpoint14  checkpoint14
1107   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
1108   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.

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