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revision 1.22 by adcroft, Wed May 26 23:01:16 1999 UTC revision 1.166 by heimbach, Tue Jun 24 16:14:59 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint51
7    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
8      - autodiff, ctrl, exf, grdchk, seaice
9      kept separate packages
10      - cost, ecco, obcs
11    
12    checkpoint50i_post
13    o Preparing next differentiable checkpoint and sync
14      of MAIN vs. ecco-branch
15      - 1st step: this one is differentiable
16      - 2nd step: next(! not this) checkpoint will have updated packages
17                  from ecco-branch)
18    
19    checkpoint50h_post
20    o new package "land": provide surface BC for AIM.
21    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
22    o AIM: use true log-P extrapolation for near surface temp (= as in
23        F.Molteni paper) ; update aim.5l_cs output.
24    o New variable in PARM03 for more flexible pickups
25    o somewhat cleaned package initialisation sequence for
26      ctrl/ cost/ ecco/ in packages_... routines
27    
28    checkpoint50g_post
29    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
30      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
31      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
32        made the default because of faster convergence than ADI
33    
34    checkpoint50f_post
35    o exf totally restructured
36      - replaced all exf_set_ routines by one generic exf_set_gen.F
37        and made sure it's still differentiable
38      - split exf_getffields.F into new exf_bulkformulae.F
39      - exf_inscal_/exf_outscal_ suffixes consistent with field names
40      - updated adjoint/makefile and relevant verif. accordingly
41    
42    checkpoint50f_pre
43     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
44          + change Evap over land. (update aim.5l_cs output)
45     o added missing .cvsignores and made uniform across expts
46     o changed configuration of tidal_basin_2d expt
47     o added pkg/debug functions for tracing code in fatal crashes
48     o tidied pkg/monitor to use MONITOR_OPTIONS.h
49     o new fn in pkg/monitor to stop model if solution grows too big
50     o removed lots of single quotes from comments
51    
52    checkpoint50e_post
53    o make KPP work with PTRACERS
54     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
55       nearly a copy of kpp_transport_s
56     - there is no analogue to SurfaceTendencyS, so I have to use
57       gPtr(of the surface layer) instead
58    o add a new platform SunFire+mpi (SunFire 15000) to genmake
59    checkpoint50e_pre
60    
61    checkpoint50d_post
62    o change kpp output from multiple-record state files to single-record state
63      files analogous to write_state.F
64    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
65      analogous to the cg2d-related output.
66    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
67      so that writing to internal file fn (with length 512) fails.
68    checkpoint50d_pre
69    
70    checkpoint50c_post
71    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
72    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
73    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
74    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
75    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
76    
77    checkpoint50c_pre
78    Merging from release1_p13:
79    o bug fix for pkg/seaice dynamic solver
80    o Added SEAICE_initialHEFF to pkg/seaice
81    
82    checkpoint50b_post
83    o store u*,v* in gU,V instead of in guNm1,gvNm1
84    o in order to put the momForcing out of the Adams-Bashforth:
85      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
86      to timestep.F
87    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
88    o re-generate output for highly sensitive test-exp:
89       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
90    
91    checkpoint50b_pre
92    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
93    o corrected CPP option mismatch in exf_Bulk... functions for case
94      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
95    
96    checkpoint50a_post
97    o Bug fix for merging between c50 and KPP.
98      ikey was passed from thermodynamics to kpp_calc via
99      common block rather than being recomputed in kpp_calc,
100      in contradiction with new key itdkey.
101      New key ikppkey created, and tamc.h headers updated.
102    
103    checkpoint50
104    - 2nd step of merge with ecco-branch:
105      merge changes in ecco-branch back into main trunk
106    - bug fix in find_alpha
107    - more storing in gmredi_calc_tensor.F, kpp_routines.F
108    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
109    - merged some sliced AD support routines
110    
111    checkpoint49
112    merged from ecco-branch:
113    o exf:
114      - Enable initialisation of forcing fields to constant
115        (runtime) values.
116      - in exf_getffields.F
117        Reduce i-/j-loop to interior domain, discarding overlaps.
118        That also fixes wrong TAF-key computations for key_1, key_2
119        with bulf formulae.
120      - exf_init.F modify #ifdef for exf_init_evap
121      - exf_getffieldrec.F, ctrl_getrec.F
122        The following INT-usages are not safe:
123          fldsecs  = int(fldsecs/fldperiod)*fldperiod
124          fldcount = int(fldsecs/fldperiod) + 1
125        and were modified.
126    o autodiff: checkpoint_lev...
127      - updated storing for bulk formulae (some arrays were missing)
128      - added state for seaice package
129      - synchronized with main branch
130    o DIVA:
131      Modif.s in
132      - the_main_loop.F
133      - the_model_main.F
134      and added cost_final_restore.F cost_final_store.F
135      o With these changes, it is possible to fully separate
136        the first forward run to compute the cost function (mdthe_main_loop)
137        and adjoint runs over individual DIVA intervals (adthe_main_loop)
138        into separate model executions.
139        This enables better tuning of DIVA to given queue sizes.
140      o Loss of cost function value in consecutive DIVA runs is
141        fixed by storing to 'costfinal' file.
142      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
143        beginning/end of adjoint integration is accounted for.
144      The current changes apply to TAF-1.4.26.
145      TAF has one remaining bug, requiring one manual change
146      (see MITgcm manual).
147    o cal: synchronized between MAIN and ecco-branch
148    
149    checkpoint48i_post
150    o Changes to restore differentiability of code w.r.t. previous tag
151      (mostly adding new routines to make list and replacing
152      pressure by totPhiHyd).
153    o Updated and merged grdchk package
154      - has both ADM and TLM checks
155      - works for single- and multi-proc.
156      - output cleaned
157      - worked successfully for parallel DIVA
158    o genmake:
159      - Adding -platform=SP4
160      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
161    o Modif. for DIVA:
162      ctrl_unpack should not be called in intermediate DIVA interval.
163      (similar thing would apply for active files such as
164      tbar, sbar, psbar, which should not be reinitialised;
165      only relevant for ecco-branch)
166    
167    checkpoint48h_post
168    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
169    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
170    o Added SEAICE_initialHEFF to pkg/seaice
171    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
172    
173    checkpoint48g_post
174    --- EOS:
175    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
176      store total Potential in totPhyHyd for diagnostics & EOS.
177    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
178    --- Pressure/geopotential gradient:
179    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
180    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
181      ( changes results of global_ocean_pressure )
182    o NLFS + z-coord.: add eta*Rho' contribution.
183    o accurate phiHyd when using interface-W at the middle between 2 centers
184     ( changes results of ideal_2D_oce )
185    o includes r* 2nd term in potential gradient.
186    
187    checkpoint48f_post
188    Merging from release1_p12:
189    o Modifications for using pkg/exf with pkg/seaice
190      - improved description of the various forcing configurations
191      - added basic radiation bulk formulae to pkg/exf
192      - units/sign fix for evap computation in exf_getffields.F
193      - updated verification/global_with_exf/results/output.txt
194    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
195      (SBO) core products, including oceanic mass, center-of-mass,
196      angular, and bottom pressure (see pkg/sbo/README.sbo).
197    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
198      to avoid negative values in shallow regions.
199      - updated verification/natl_box/results/output.txt
200      - updated verification/lab_sea/results/output.txt
201    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
202    o Added useSingleCpuIO option (see PARAMS.h).
203    o Updated useSingleCpuIO option in mdsio_writefield.F to
204      work with multi-field files, e.g., for single-file pickup.
205    o pkg/seaice:
206      - bug fix in growth.F: QNET for no shortwave case
207      - added HeffFile for specifying initial sea-ice thickness
208      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
209    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
210      kpp_transport_t.F, forward_step.F, and the_main_loop.F
211    o pkg/seaice:
212      - adjoint-friendly modifications
213      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
214    
215    checkpoint48e_post
216    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
217    o dynamics: change definition of computational domain & adapt mom_fluxform
218      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
219    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
220        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
221        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
222        global_ocean.90x40x15 global_with_exf global_ocean_pressure
223        inverted_barometer solid-body.cs-32x32x1
224      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
225    
226    checkpoint48d_post
227    o in preparation for r*:
228     a) use pre-computed gradient of hydrostatic potential:
229        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
230     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
231        => affects results of glob_oce_pressure (different truncation error)  
232      update output.txt of ideal_2D_oce & global_ocean_pressure
233    
234    checkpoint48d_pre
235    o in preparation for r*:
236      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
237      pass the 2 comp. of the grad. as arguments to momentum S/R.
238      but for the moment, only used if it does not change the results.
239    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
240    
241    checkpoint48c_post
242    Modifications in treatment of initial flux forcing controls
243    to avoid extra storing of flux fields.
244    
245    checkpoint48c_pre
246    o Added tidal_basin_2d experiment (currently 1D!)
247    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
248    
249    checkpoint48b_post
250    o r* coordinate added in #ifdef NONLIN_FRSURF block.
251     (modification to pressure gradient not yet implemented)
252    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
253      (for U & V) that are used for vertical advection of momentum.
254    
255    checkpoint48a_post
256    o In preparation for r*, use temp. array to compute vertical transport
257       in flux-form momentum pkg. => change results of few test-exp.
258      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
259                        lab_sea, natl_box & plume_on_slope
260    
261    checkpoint48
262    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
263    
264    checkpoint47j_post
265    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
266    o moved adexch from forward_step to addummy_in_stepping
267    o added exch in ctrl_map_...
268    o aveFreq.=0. at end of cost_final to avoid overwrite in
269      reverse checkpointing loop
270    o Yet more changes in gmredi:
271      * adgmredi_calc_tensor
272        avoiding all recomputation of gmredi_slope_limit
273      * adgmredi_x/y/rtransport
274        added flag for excessive storing to avoid recomp. of
275        u/v/rtans, dTdx/y/z
276        -> this is not really necessary and very memory-consuming
277      * adgmredi_slope_psi:
278        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
279      * gmredi_slope_limit
280        re-activated full calculation of taperfct for case 'ac02'
281    o updating verification/ adjoints of carbon, global_ocean.90x40x15
282    
283    checkpoint47i_post
284    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
285    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
286      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
287    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
288    o gmredi: fix few bugs.
289    
290    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
291    This will be a good checkpoint to plug into the ecco-branch.
292    o few modif.'s to get latest version adjointed
293      (mainly kick out code in ini_linear_phisurf)
294    o modif's to run adjoint with exactConserv
295    o case GM_BOLUS_ADVEC should be cleaned
296      S/R gmredi_slope_psi should be cleaned
297    o verification/carbon now has exactConserv=.TRUE.
298    
299    checkpoint47g_post
300    o time-average AIM output: becomes independent from statvars time-average
301      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
302    o After TAF bug fix:
303      Tested adjoint of gmredi package.
304      Tests were done with checkpoint47 rather than with latest
305      checkpoint47f_post since the latter is broken for the adjoint
306      verification/carbon/ contains both ADM and TLM gradient checks.
307    Here they are, before they get changed/lost/stolen.
308    Mostly modif.'s to fix numerical sensitivities.
309    Gradient checks OK for
310    - GM_taper_scheme:
311      * clipping
312      * ac02
313      * linear
314      * glw91
315      * dm95
316      * ldd97
317    - GMREDI_OPTIONS:
318      * GM_VISBECK_VARIABLE_K
319      * GM_NON_UNITY_DIAGONAL
320      * GM_EXTRA_DIAGONAL
321      * GM_BOLUS_ADVEC
322    in conjunction with data.gmredi parameters to be checked in
323    in a few minutes under verification/carbon/code/
324    
325    checkpoint47f_post
326    Merging from release1_p10:
327    o modifications for using pkg/exf with pkg/seaice
328      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
329        and SEAICE_EXTERNAL_FLUXES
330      - pkg/exf CPP options EXF_READ_EVAP and
331        EXF_NO_BULK_COMPUTATIONS
332      - usage examples are Experiments 8 and 9 in
333        verification/lab_sea/README
334      - verification/lab_sea default experiment now uses
335        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
336    
337    checkpoint47e_post
338    o created a tag prior to creating a branch
339    
340    checkpoint47d_post
341    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
342      at the bottom boundary had an erroneous half slip boundary condition
343    o added bottom drag and no slip boundary condition capabilities to
344      oceanic pressure coordinates code
345    o added new verification experiment global_ocean_pressure, this experiment is
346      also described in the tutorial section of the manual
347    checkpoint47d_pre
348    
349    checkpoint47c_post
350    o Added a verification experiment for a global cubed-sphere ocean run
351      -  verification/global_ocean.cubed32x32x30
352      -  uses pkg/therm_seaice and pkg/bulk_forcing
353    
354    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
355    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
356      when using P-coordinate; only implemented for atmospheric config.
357    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
358      NOTES: requires option NONLIN_FRSURF to be "#define".
359    o update advect_xz/results/output.txt (left from checkpoint44g_post)
360    
361    checkpoint47b_post
362    Merging from release1_p9:
363    o pkg/seaice
364      - removed GOTO's and added taf directives
365      - double precision constants to reduce the g77 (Linux)
366        to F77 (SGI) differences reported in release1_p8
367    o tools/genmake
368      - added SGI options
369    o verification/testscript
370      - updated to that of checkpoint47a_post
371    o verification/global_ocean.90x40x15/input/eedata
372      - modified for SGI f77 compatibility
373    o verification/lab_sea
374      - added description of sea-ice model
375      - added missing matlab routines
376      - added test of thermodynamics parallelization
377    
378    checkpoint47a_post
379    o new pkg: aim_v23
380     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
381       for now, keep the same surface forcing as before.
382     - Part-Cell implemented into AIM; check that Heat & Water are conserved
383     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
384     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
385    o add diagnostic of surface correction term in monitor output
386    
387    o bulk_force and therm_seaice
388    - Two packages:  bulk_force (Bulk forcing)
389      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
390    - Earlier integration from Stephaine Dutkiewicz
391      and Patrick Heimbach.
392    - Two ifdef statements for compile time,
393       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
394    
395    checkpoint47
396    differentiable version of checkpoint46n_post
397    o bug fix in quasihydrostaticterms
398    o * "clean" adjoint code (in terms of extensive recomputations)
399        can now be obtained for all GMREDI options (i.e. for
400        - GM_VISBECK_VARIABLE_K
401        - GM_NON_UNITY_DIAGONAL
402        - GM_EXTRA_DIAGONAL
403        - GM_BOLUS_ADVEC )
404      * However, wrong gradient check problem remains unsolved.
405      * New CPP options have been introduced for different
406        tapering schemes
407    o external_fields_load now part of differentiation list
408    o pressure needs multiple storing;
409      would be nice to have store_pressure at beginning or
410      end of forward_step, e.g. by having phiHyd global (5-dim.)
411      (NB: pressure is needed for certain cases in find_rho,
412      which is also invoked through convective_adjustment).
413    o recomputations in find_rho for cases
414     'JMD95'/'UNESCO' or 'MDJWF' are OK.
415    o #define ATMOSPHERIC_LOADING should be differentiable
416    o ini_forcing shifted to begining of initialise_varia
417    o Incorporating QNVS line search routines into MITgcm
418      (this is separate code, and therefore not under pkg)
419      lsopt/, optim/
420    o Updated verification/carbon/
421      - #define GM_VISBECK_VARIABLE_K
422      - GM_taper_scheme    = 'ldd97'    
423    
424    checkpoint46n_post
425    Merging from release1_p8:
426    o verification/natl_box:
427      updating new external_fields_load routine
428    o New package: pkg/seaice
429      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
430      The sea-ice code is based on Hibler (1979-1980).
431      Two sea-ice dynamic solvers, ADI and LSR, are included.
432      In addition to computing prognostic sea-ice variables and diagnosing
433      the forcing/external data fields that drive the ocean model,
434      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
435      The implied surface heat flux is then stored in variable
436      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
437      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
438      non-local transport term.  Because this call precedes model
439      thermodynamics, temperature under sea-ice may not be "exactly" at
440      the freezing point by the time theta is dumped or time-averaged.
441      N.B.: fairly large differences in accuracy occur across
442            different platforms/compilers; comparison between
443            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
444            generated output gives:
445       T           S           U           V
446      C D M    c        m  s        m  s        m  s        m  s
447      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
448      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
449      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
450    
451      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
452    o GAD:
453      - generated new common blocks to account for call of
454        same gad routines with differing traceridentities
455        (needed to modify tracerIdentity indices in GAD.h)
456      - generated separate common blocks for case useCubedSphereExchange
457        (Department of Futurology)
458      - parameter lists to gmredi_?transport: added tracerIdentity
459      - added new key indices to tamc.h
460    o external_fields_load:
461      - added this routine to TAF list
462      - needed to make some common blocks global and additional storing
463        along the same lines as exf package (checkpoint_lev?_directives.h)
464    o exf:
465      updated external forcing package
466      - bug fixes carried over from ecco-branch
467        (missing OBCS_OPTIONS.h in two routines)
468      - enable easy to use "no forcing".
469      - added exf I/O for atmospheric loading
470      - added exf I/O for runoff data
471      - transfered scaling between exf <-> MITgcm to exf namelist
472    o Adding new verification experiment global_with_exf.
473      This verification experiment is almost identical to the
474      global_ocean.90x40x15 experiment, except that it uses
475      the exf (and cal) package instead of the
476      external_fields_load routine (cf README file).
477    
478    checkpoint46m_post
479    o modified testscript to return -- when there are no lines of "%MON" output
480    o added new flag "quasiHydrostatic" for QH mode
481      and new routine quasihydrostaticterms()
482    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
483      New routine: mom_u_coriolis_nh()
484    o fixed sign of non-hydrostatic metric terms in u and v equations.
485      Depend on correct sign of gravitySign.
486    o added work.pc* to .cvsignore in aim directories using ifc
487    o introduced flag for controllin non-hydrostatic metric terms
488    o removed gravitySign from PARM04
489    o switched to g77/ifc from pgf77 in aim experiments
490    
491    checkpoint46l_post
492    o made convective adjustment work with pressure coordinates:
493     - changed the direction of k-loop in convective_adjustment.F for the
494       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
495     - adjusted the reference pressure k-index in convective_adjustment.F
496     - adjusted the convection condition in convect.F (in analogy to
497       calc_ivdc.F)
498     - convective_adjustment no longer computes anything on the halos
499     - removed the warnings about negative salinity from find_rho.F and
500       find_alpha.F; instead the new routine look_for_neg_salinity, called
501       at the beginning of find_rho, find_alpha, and find_beta, does a
502       check of the entire slice, if CPP-option
503       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
504    checkpoint46l_pre
505    
506    checkpoint46k_post
507    o fixed the verification/global_ocean.90x40x15 experiment:
508     - new bathymetry (the world according to A., JMC, and M.)
509     - new initial fields and forcing fields (*.bin files)
510     - new POLY3.COEFFS (for the next release one should switch to a full
511       equation of state: JMD95P or MDJWF)
512     - fixed several errors and redundancies in the data file
513     - experiment uses looped cells
514     - added matlab directory with diagnostic scripts for plotting of output
515    
516    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
517     - read AIM physics parameters from a file (data.aimphys)
518     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
519    
520    checkpoint46j_post
521    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
522    o move wVel computation at the end of the time step, in S/R integr_continuity
523    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
524    o update timeave pkg for wVel diagnostic.
525    checkpoint46j_pre
526    
527    checkpoint46i_post
528    o Clean up AIM package (and keep the results unchanged):
529      include CPP_OPTION and use IMPLICT NONE in all routines ;
530      declare all the variables _RL ; use _d 0 for all numerical constants.
531      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
532    
533    checkpoint46h_post
534    o cleaned up the use of rhoNil and rhoConst.
535      - rhoNil should only appear in the LINEAR equation of state, everywhere
536        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
537        and the dynamical equations are all divided by rhoConst
538    o introduced new parameter rhoConstFresh, a reference density of fresh
539      water, to remove the fresh water flux's dependence on rhoNil. The default
540      value is 999.8 kg/m^3
541    o cleanup up external_forcing.F and external_forcing_surf.F
542      - can now be used by both OCEANIC and OCEANICP
543    checkpoint46h_pre
544    
545     Added code to convert surface volume flux (fresh water) into
546     a mass flux when using P coordinates in the ocean (OCEANICP).
547     Note: It assumes you have set rho0=rhoConst=density of fresh water.
548    
549    checkpoint46g_post
550    o Include a new diagnostic variable phiHydLow for the ocean model
551      - in z-coordinates, it is the bottom pressure anomaly
552      - in p-coordinates, it is the sea surface elevation
553      - in both cases, these variable have global drift, reflecting the mass
554        drift in z-coordinates and the volume drift in p-coordinates
555      - included time averaging for phiHydLow, be aware of the drift!
556    o depth-dependent computation of Bo_surf for pressure coordinates
557      in the ocean (buoyancyRelation='OCEANICP')
558      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
559        Theta, Salinity, and Pressure in the parameter list. This routine is
560        presently contained in find_rho.F. This routine does not give the
561        correct density for 'POLY3', which would be a z-dependent reference
562        density.
563    o cleaned up find_rho
564      - removed obsolete 'eqn' from the parameter list.
565    o added two new verification experiments: gop and goz
566      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
567    checkpoint46g_pre
568    
569    checkpoint46f_post
570    o Enable tangent linear (forward mode) gradient checks:
571      - extended active file handling to g_... files
572      - added TANGENT_SIMULATION to theSimulationMode
573      - extended grdchk package accordingly
574    o added tangent linear setup in verification/carbon/code_ftl
575    o added adjoint setup in verification/front_relax/code_ad
576    
577    checkpoint46e_post
578    o Added new equation of state -> MDJWF
579      - EOS of McDougall et al., 2002, JAOT, submitted
580      - caveat: the equation of state is only valid for a smaller (more
581        realistic?) range of values than JMD95P/Z and UNESCO
582      - added masks to the calculation of pressure in store_pressure
583      - added more check values for density in check_eos (ini_eos.F), some of
584        the old check values are out of the range of the MDJWF-eos, so don't
585        expect perfect matches for those
586    checkpoint46e_pre
587    
588    checkpoint46d_post
589    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
590      'OCEANICP', also initialised field pressure correctly in ini_eos in the
591      case of pressure coordinates. eosType='JMD95Z' in
592      combination with buoyancyRelation='OCEANICP' now causes an error.
593    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
594      in find_alpha/beta.
595    checkpoint46d_pre
596    
597    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
598      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
599    
600    checkpoint46c_post
601    o Changes necessary for ocean in p-coordinates
602     -  Added new buoyancy relation = 'OCEANICP'
603     -  Added new parameters = gravitySign (this used to be contained inside
604        the factor dRdZ which I added when we first switched to R coordinates).
605     X GM/Redi is not compatible (yet)
606     X bottom drag and no-slip need to be debugged.
607    checkpoint46c_pre
608    
609    checkpoint46b_post
610    o Added new equation of state -> JMD95Z and JMD95P
611      - EOS of Jackett and McDougall, 1995, JAOT
612      - moved all EOS parameters into EOS.h
613      - new routines ini_eos.F, store_pressure.F
614    o Added UNESCO EOS, but not recommended because it requires
615      in-situ temperature (see JMD95)
616    o Modified formatting for knudsen2.f in utils/knudsen2 and added
617      unesco.f to be used with POLY3
618    checkpoint46b_pre
619    
620    checkpoint46a_post
621    o Added (atmospheric) pressure loading
622      - new field in FFIELDS.h, etc...
623      - new cpp flag ATMOSPHERIC_LOADING
624    o Changed hFacC to _hFacC in calc_phi_hyd.F
625    o Added SHORTWAVE_HEATING to some files for consistency
626    checkpoint46a_pre
627    
628    checkpoint46
629    further merges from release1_p5
630    o new ctrl package
631      - adopted from ECCO environment to enable optimization
632      - added Eliassen Palm fluxes to controls
633    o added Eliassen Palm flux controls to gradient check package
634    o cost package
635      - Compatible with new ctrl package
636      - added Eliassen Palm cost hooks
637      - modif's of existing cost functions
638    o Adjoint-related bug fixes in kpp:
639      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
640      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
641    o autodiff package
642      - flow directives:
643        + new for S/R do_the_model_io
644        + enhanced for S/R checkpoint
645        + new gmredi.flow
646      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
647        disable adcommon.h/g_common.h by default.
648      - fixed problem for adjoint of global_max
649    o modified verification/carbon/
650    o New setup for adjoint of global_ocean
651    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
652    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
653    o incorporated hooks for sponge layer code (external_forcing.F)
654    
655    checkpoint45d_post
656    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
657    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
658      (affects plume_on_slope "cg2d" output)
659    o add new parameter deltaTfreesurf for free-surface time stepping
660    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
661    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
662    o change phiMin in exp1 (to agree with documentation)
663    o add new flags:
664     - T,S forcing inside/outside Adams-Bashforth
665     - turn off temp,salt advection and/or forcing
666     - for each tracer, define internal flag for multiDimAdvection & A-B
667    o monitor: change definition of KE to check conservation of Energy
668    
669    checkpoint45c_post
670    o Removed f90 comments ("!")
671    o Modified initialisations to enable exf package for MITgcm
672      (without invoking ECCO_PACKAGE).
673    o modifications to gradient check package (Martin Losch)
674      - enable centered differences
675      - modified format of standard output
676    
677    checkpoint45b_post
678    o cleaned exchange calls in cg2d
679    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
680    o included CPP option SINGLE_LAYER_MODE in thermodynamics
681      to configure barotropic setup (Martin Losch)
682    o moved some initialisations within bi,bj loop in dynamics
683      (TAF flow dependency)
684    o in initialise_varia, moved call packages_init_variables
685      before convective_adjustment_init
686      (corresponding adjustment of TAF tape initialisation).
687    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
688    
689    checkpoint45a_post
690    o compute Rho over the whole domain (extend iMin,jMin indices)
691    o specific exchange for X-slice domain (case Ny=1)
692    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
693    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
694    
695    checkpoint44h_post = checkpoint45
696    o Fix to restore differentiability:
697      place at which packages_init_variables is called in
698      initialise_varia is crucial for reverse control flow.
699    o modifications in GMRedi to enable stable adjoint
700      (corresponding modif's in thermodynamics, dynamics)
701    o added missing hook for sponge layer code in external_forcing
702    o modified test cost functions
703    o storing in gad_advection (plus removal of write(0,*)!
704    o missing headers TR1.h added in convective_adjustment routines
705    o errorMessageUnit set non-equal zero in eeboot
706      (conflict on some platforms, e.g. IBM SP3)
707    o modified carbon verif.
708    
709    checkpoint44h_pre
710    o vertical grid option: allow to put the Interface at the middle between
711      2 cell-centers ; replace delZ in pkg/kpp by drF.
712    o GM Advective form: Tracers are advected using the residual transport (=
713      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
714    
715    checkpoint44g_post
716    o fix surface correction term in multiDimAdvection (affects plume_on_slope
717      results) ; ifdef missing in thermodynamics.F
718    
719    checkpoint44f_pre,checkpoint44f_post
720    o added PTRACERS package
721      This allows an arbitrary number of passive tracers to be integrated
722      forward simultaneously with the dynamicaly model.
723      + Implemented so far:
724        - basic forward algorithm (time-stepping, advection, diffusion, convection)
725        - I/O and checkpointing
726        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
727      + Not implemented so far:
728        - KPP
729        - OBCS
730      + No specific example supplied (yet) but global_ocean.90x40x15 has the
731        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
732        line in data.pkg.
733      + This package is disabled by default since it increases storage.
734    
735    
736    o testscript: added -cleanup option
737    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
738                 b) enable to filter 2D fields.
739    
740    checkpoint44e_pre,post
741    o re-wrote convective adjustment to use pre-calculated weights
742      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
743      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
744      Original calls to convect() still in place.
745    
746    chkpt44d_pre,post
747    o added missing EXCLUDE_MONITOR flags
748    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
749      (incompatible typ in MIN/MAX expressions caused problems
750      on IBM SP3)
751    o in genmake added variable MAKEDEPEND
752      plus resetting for case SunOS
753    o added timer_stats.c routine for IBM SP3
754    o removed variables in dynamics
755    !!! I forgot to create tag chkpt44d_pre !!!
756    !!! But chkpt44d_pre = chkpt44c_post    !!!
757    
758    o real fresh water flux implemented with non-linear free-surface.
759    
760    chkpt44c_pre,post
761    o few fix (mask in shap_s2, EmPmR in external_field_load,
762      USE_NATURAL_BCS in solve_for_P);
763    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
764    
765    checkpoint44b_pre/_post
766    o merge of relevant stuff from the ecco-branch:
767      - genmake: removed $S64 overwrite for case SunOS
768      - pkg/exf: update and corrections for field swapping and obcs
769      - pkg/ecco: parameter lists for the_model_main, the_main_loop
770                  harmonized between ECCO and MITgcm
771      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
772                      updated checkpointing_lev... lists for obcs
773      - model/src: minor changes in forward_step, plot_field
774                   added directive for divided adjoint in the_main_loop
775      - pkg/mdsio: added mdsio_gl_slice
776    
777    o check parameters & config (chkpt44a_pre,post)
778    o OBC and NonLin_FrSurf.
779    
780    checkpoint44
781    o fix bug in mom_vi_del2uv
782    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
783    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
784    o update AIM experiments (NCEP input files)
785    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
786    o added some stuff for AD
787    
788    checkpoint43
789    o added two new advection tests
790    o added global 4x4 degree ocean test
791    o added test of H&S94 with free surface on cube
792    o some final mods for gradient check, adjoint,...
793    
794    checkpoint42
795      Fixed AD-related problems:
796    o Store directives up-to-date with re-arranged Adams-Bashforth
797      (mainly thermodynamics.F)
798    o New store directives for multi-dim. advection schemes
799      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
800      * new common block and key passkey
801      (mainly gad_advection.F)
802    o Modified store directives for split of dynamics/thermodynamics
803      for the case ALLOW_KPP
804    o Cleaned argument list for timestep_tracer.F
805    
806    checkpoint41
807    o re-formatted/added comments in prologues of key subroutines
808      to work with protex
809    
810    checkpoint40
811    o moved calc_gs, calc_gt and calc_tr1 back to model/src
812    o added FLT (floats) package from Arne along with demo. experiment
813    o re-arranged Adams-Bashforth scheme for tracers to allow easier
814      implementation of forward-in-time forcing terms
815    o more mods for non-linear free-surface including new variable
816    o modified multi-dim method to work on cube
817    o bug fix in KPP (from DM)
818    
819    checkpoint40pre9
820    o added DST advection schemes
821    o fix MPI bug on SGI's
822    o modifications for non-linear free-surface
823    o fixed conditionals for fixed flow/passive tracer only mode
824    o added tension/strain form of stress tensor
825    o changes to commenting of arguments for TAF/TAMC
826    o added/updated many matlab scripts
827    o added multi-dimensional advection method for tracers
828      
829    checkpoint40pre8
830    o new package rw/
831      Added method for dumping intermediate local arrays:
832      mdsio_writetile - same as mdsio_writefield except works from inside
833                        bi,bj loop
834      mdsio_writelocal - same as mdsio_writetile except works for local
835                         arrays
836      write_local_r? - higher-level wrapper for mdsio_writelocal
837      Controlled by diagFreq. Defaults to zero (ie. no dumps)
838      Example given at end of mom_vecinv.F that dumps some local arrays.
839    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
840      control flux-form versus vector invariant code.
841      Switch is runtime flag vectorInvariantMomentum (defaults to false)
842      or genmake -DISABLE ...
843    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
844      (additional storing is now needed for case vecinv;
845      currently nothing implemented to switch this storing off
846      in case fluxform is used since no CPP flag available).
847    
848    checkpoint40pre7
849    o bug fix in dynamics.F
850      calc_viscosity called before k=1,Nr loop.
851    o added some #ifdef's ALLOW_PASSIVE_TRACER
852    o cleaned initialisations in ctrl_map_ini
853      related to TAF
854    
855    checkpoint40pre6
856    o split dynamics into thermodynamics & dynamics
857    o corresponding split of calc_diffusivity into
858      calc_diffusivity, calc_viscosity
859      (kpp_calc_diff, kpp_calc_visc).
860    o Added diffkr, kapgm to control variables
861    o bug fix in gmredi_slope_limit for ldd97
862    
863    checkpoint40pre5
864    o proper initialization of Adams-Bashforth time stepping
865      + uses forward step for very first step of model (iter=0)
866    o re-generated *all* output since almost all output is modified by this
867      change (sorry but we've been putting this one off for about 2 years)
868      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
869        *not* regenerated since they are already out of date and I don't
870        want to create the impression that they are suddenly working.
871    o removed KAP stuff for DEC's
872    o modified/added many .cvsignore files in */code and */input
873    o added new expt "solid-body.cs-32x32x1"
874      + this uses an alternative form of ini_curvilinear_grid.F which
875        is not necessarily any better than the current one...
876    
877    checkpoint40pre4
878    o added re-initialisations of utrans,vtrans,rtrans in
879      calc_common_factors which are crucial for TAF.
880    o extended iMin,jMin range for calc_common_factors,
881      calc_diffusivity
882    o added option ALLOW_PASSIVE_TRACER
883    o a few minor updates and fixes
884    
885    checkpoint40pre3
886    o created calc_gtr1.F for gad package
887    o split the_main_loop and re-introduced forward_step
888    o some recomputations of nIter0 for TAMC
889    
890    checkpoint40pre2
891    o Updated to latest branch of AJA, JMC
892    o Added gradient check package
893    o Added routines for passive tracer handling
894    o Added carbon sequestration sensitivity experiment
895    
896    checkpoint39
897     o Modifications and fixes to support TAMC
898       (mainly missing or wrong directives)
899     o Corrected common blocks when fooling TAMC to produce adjoint I/O
900       in addummy_in_stepping
901     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
902     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
903     o Included following packages:
904       cal: calendar
905       exf: external forcing
906       ecco: essential routines to control use of cal, exf
907             (NB: this is not the full ECCO environment)
908     o disabled some packages by default in genmake
909    
910    checkpoint38
911     o see notes_c37_adj.txt
912     o corrected wrong layer index in external_forcing_t
913     o replaced the_main_loop/forward_step by the_main_loop
914     o removed forceoutput from write_state
915       (replaced criteria for initial/final state)
916     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
917    
918    checkpoint37
919     o mdsio.F routine split and packaged in pkg/mdsio
920       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
921        used unless genmake -disable=mdsio)
922     o allow a more precise surface-geopotential gradient for the atmosphere
923       taking into account the change in space of Alpha (=1/rho) at the surface.
924     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
925       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
926     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
927       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
928       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
929     o Time-Average diagnostics defined as a pseudo package "timeave".
930     o pickup files : old pickup (before c35) did not work with new code (c35
931       and after) unless activating 2 commented lines in initialise-varia.
932     o Non-Hydrostatic pickup file Pb fixed.
933     o bug with Rigid-lid version (since c35) fixed.  
934    
935    checkpoint36
936     o implement Crank-Nickelson barotropic time-stepping
937     o recover Time-Average diagnostics
938     o fix Pb in checkpoint (PR#19)
939     o AIM become a standard package ; clean unused CPP_kees
940    
941    checkpoint35
942     o subtantial rewrite of dynamics.f
943     o allows staggered time-stepping
944     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
945     o added bottom drag (linear + quadratic)
946    
947    checkpoint34
948     o Modified exchange routines for correct reverse simulation.
949     o Added verification output to comply with bug fix in impldiff.F
950       as of c33 (exp2, natl_box).
951     o Corrected store directives in dynamics.F
952     o Corrected array boundaries in impldiff.F
953     o Corrected array dimensions in gmredi.
954       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
955     o Added routine GLOBAL_SUM_INT to global_sum.F
956     o Added mdsio_gl.F for ECCO purposes.
957    
958    checkpoint33
959     o Fixed bug in lower BC in impldiff.F
960     o Fixed confusion about units of forcing arrays in FFIELDS.h
961       namely Fu,Fv,Qnet,Qsw,EmPmR:
962       - Removed verification/natl_box/code/external_fields_scale.F
963         (did not differ from that in model/src)
964       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
965         (see FFIELDS.h for description)
966       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
967         kpp_calc.F and kpp_transport_t.F
968       - Removed model/src/external_fields_scale.F and calls to it
969       - verification/natl_box uses flux data with "atmospheric" sign so
970         a special version of external_fields_load.F is used to
971         change the data as it's read in. This way, the arrays
972         have the right units and signs at all times tha a user could
973         possibly use them.
974     o Corrected genmake to delete a temporary file during configuration
975    
976    checkpoint32
977     o Scaling of forcing fields moved from external_forcing.F to
978       external_fields_scale.F, called directly after loading fields.
979     o Surface relaxation terms added to surface tendency fields in
980       extra subroutine.
981     o impldiff.F changed to avoid storing by TAMC of huge intermediate
982       fields.
983     o Changes in GMRedi to comply with packaging structure.
984     o Modifications and bug fixes in KPP package.
985     o Verification experiment for KPP added (verification/nat_box/)
986    
987    checkpoint31
988     o Packages interface brought in line with defined standard
989       -> new routines packages_...F
990       -> changes in initialise_fixed.F, initialise_varia.F
991       -> enables initialisation interface for ECCO package
992     o Rescaling of external forcing fields immediately after read
993       (removed from external_forcing.F)
994       -> new: surface_fields_scale.F
995       -> affects ini_foorcing.F, external_fields_load.F
996     o Computation of surface tendencies before tendency updates.
997       -> new: external_forcing_surf.F
998     o Change of variable names useGMRedi, useKPP, useECCO
999     o Further changes in dynamics.F, impldiff.F for TAMC
1000     o Tested for experiments 0, 2, 4.
1001       - not yet tested for GMRedi.
1002       - not yet tested for KPP.
1003    
1004    checkpoint30
1005     o Updates for OBCs
1006     o New experiment for test OBCs (internal_wave)
1007     o New output.txt in verification/exp4/results/
1008     o Updates for KPP: calculation of viscosity corrected, new variables
1009       kpp_dumpFreq and kpp_taveFreq
1010     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1011       and entry for T90 in genmake
1012    
1013    checkpoint29
1014     o packaged KPP and GM/Redi
1015    
1016    checkpoint28
1017     o Corrected initialization of hFacMin for difference vertical coordinates
1018     o Modified calculation of partial cell thickness to more robust algorithm
1019     o config_summary.F: replaced write_1D_... by write_0D_...
1020       read_write.F: added subroutines write_0D_...
1021     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1022       included some initialisations required for TAMC.
1023     o routine calc_isoslopes: modified sqrt computation to make it
1024       differentiable for zero argument.
1025     o routines dynamics, impldiff:
1026       included store directives and tape key computations required for TAMC.
1027     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1028    
1029    checkpoint27
1030     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1031       formulation works properly with variable resolution.
1032     o restructured the calling tree between the_model_main() and dynamics()
1033     o split initialise() into initialise_fixed() and initialise_varia()
1034     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1035       in new routine ini_psurf()
1036    
1037    checkpoint26
1038     o moved some #ifdef in optional routines to encompass everything
1039       except the argument declarations. This was using up some memory.
1040     o fixed macros like _ADT to work with both versions of Linux cpp
1041     o cleaned up some unused and uninitialized variables
1042       (helps when debugging with strict compile options)
1043     o split up CPP_EEOPTIONS.h into options and macros
1044       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1045     o patch for 2 processor JAM mode
1046    
1047    checkpoint25
1048     o updates for OBCs and NH
1049     o dramatically reduced memory usage
1050     o added "JAM" routines for use on Artic network
1051     o parameterization of convection by implicit vertical diffusion
1052     o added a diagnostic of convective index
1053     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1054       (this is was partly for OBCs and NH but also in anticipation of
1055        an explicit free-surface option)
1056     o initial state input files for U and V
1057    
1058    checkpoint24
1059     o Removed some spurious "REAL"s
1060     o Updated KPP to latest version from JPL
1061     o Added a COS(latitude) in horizontal viscosity
1062    
1063  checkpoint23  checkpoint23
1064   o Added del^4 diffusion for salt and temperature   o Added del^4 diffusion for salt and temperature
1065   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)   o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)

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