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revision 1.4 by cnh, Mon Jun 8 22:38:51 1998 UTC revision 1.165 by heimbach, Mon Jun 23 22:37:30 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint50i_post
7    o Preparing next differentiable checkpoint and sync
8      of MAIN vs. ecco-branch
9      - 1st step: this one is differentiable
10      - 2nd step: next(! not this) checkpoint will have updated packages
11                  from ecco-branch)
12    
13    checkpoint50h_post
14    o new package "land": provide surface BC for AIM.
15    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
16    o AIM: use true log-P extrapolation for near surface temp (= as in
17        F.Molteni paper) ; update aim.5l_cs output.
18    o New variable in PARM03 for more flexible pickups
19    o somewhat cleaned package initialisation sequence for
20      ctrl/ cost/ ecco/ in packages_... routines
21    
22    checkpoint50g_post
23    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
24      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
25      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
26        made the default because of faster convergence than ADI
27    
28    checkpoint50f_post
29    o exf totally restructured
30      - replaced all exf_set_ routines by one generic exf_set_gen.F
31        and made sure it's still differentiable
32      - split exf_getffields.F into new exf_bulkformulae.F
33      - exf_inscal_/exf_outscal_ suffixes consistent with field names
34      - updated adjoint/makefile and relevant verif. accordingly
35    
36    checkpoint50f_pre
37     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
38          + change Evap over land. (update aim.5l_cs output)
39     o added missing .cvsignores and made uniform across expts
40     o changed configuration of tidal_basin_2d expt
41     o added pkg/debug functions for tracing code in fatal crashes
42     o tidied pkg/monitor to use MONITOR_OPTIONS.h
43     o new fn in pkg/monitor to stop model if solution grows too big
44     o removed lots of single quotes from comments
45    
46    checkpoint50e_post
47    o make KPP work with PTRACERS
48     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
49       nearly a copy of kpp_transport_s
50     - there is no analogue to SurfaceTendencyS, so I have to use
51       gPtr(of the surface layer) instead
52    o add a new platform SunFire+mpi (SunFire 15000) to genmake
53    checkpoint50e_pre
54    
55    checkpoint50d_post
56    o change kpp output from multiple-record state files to single-record state
57      files analogous to write_state.F
58    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
59      analogous to the cg2d-related output.
60    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
61      so that writing to internal file fn (with length 512) fails.
62    checkpoint50d_pre
63    
64    checkpoint50c_post
65    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
66    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
67    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
68    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
69    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
70    
71    checkpoint50c_pre
72    Merging from release1_p13:
73    o bug fix for pkg/seaice dynamic solver
74    o Added SEAICE_initialHEFF to pkg/seaice
75    
76    checkpoint50b_post
77    o store u*,v* in gU,V instead of in guNm1,gvNm1
78    o in order to put the momForcing out of the Adams-Bashforth:
79      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
80      to timestep.F
81    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
82    o re-generate output for highly sensitive test-exp:
83       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
84    
85    checkpoint50b_pre
86    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
87    o corrected CPP option mismatch in exf_Bulk... functions for case
88      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
89    
90    checkpoint50a_post
91    o Bug fix for merging between c50 and KPP.
92      ikey was passed from thermodynamics to kpp_calc via
93      common block rather than being recomputed in kpp_calc,
94      in contradiction with new key itdkey.
95      New key ikppkey created, and tamc.h headers updated.
96    
97    checkpoint50
98    - 2nd step of merge with ecco-branch:
99      merge changes in ecco-branch back into main trunk
100    - bug fix in find_alpha
101    - more storing in gmredi_calc_tensor.F, kpp_routines.F
102    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
103    - merged some sliced AD support routines
104    
105    checkpoint49
106    merged from ecco-branch:
107    o exf:
108      - Enable initialisation of forcing fields to constant
109        (runtime) values.
110      - in exf_getffields.F
111        Reduce i-/j-loop to interior domain, discarding overlaps.
112        That also fixes wrong TAF-key computations for key_1, key_2
113        with bulf formulae.
114      - exf_init.F modify #ifdef for exf_init_evap
115      - exf_getffieldrec.F, ctrl_getrec.F
116        The following INT-usages are not safe:
117          fldsecs  = int(fldsecs/fldperiod)*fldperiod
118          fldcount = int(fldsecs/fldperiod) + 1
119        and were modified.
120    o autodiff: checkpoint_lev...
121      - updated storing for bulk formulae (some arrays were missing)
122      - added state for seaice package
123      - synchronized with main branch
124    o DIVA:
125      Modif.s in
126      - the_main_loop.F
127      - the_model_main.F
128      and added cost_final_restore.F cost_final_store.F
129      o With these changes, it is possible to fully separate
130        the first forward run to compute the cost function (mdthe_main_loop)
131        and adjoint runs over individual DIVA intervals (adthe_main_loop)
132        into separate model executions.
133        This enables better tuning of DIVA to given queue sizes.
134      o Loss of cost function value in consecutive DIVA runs is
135        fixed by storing to 'costfinal' file.
136      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
137        beginning/end of adjoint integration is accounted for.
138      The current changes apply to TAF-1.4.26.
139      TAF has one remaining bug, requiring one manual change
140      (see MITgcm manual).
141    o cal: synchronized between MAIN and ecco-branch
142    
143    checkpoint48i_post
144    o Changes to restore differentiability of code w.r.t. previous tag
145      (mostly adding new routines to make list and replacing
146      pressure by totPhiHyd).
147    o Updated and merged grdchk package
148      - has both ADM and TLM checks
149      - works for single- and multi-proc.
150      - output cleaned
151      - worked successfully for parallel DIVA
152    o genmake:
153      - Adding -platform=SP4
154      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
155    o Modif. for DIVA:
156      ctrl_unpack should not be called in intermediate DIVA interval.
157      (similar thing would apply for active files such as
158      tbar, sbar, psbar, which should not be reinitialised;
159      only relevant for ecco-branch)
160    
161    checkpoint48h_post
162    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
163    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
164    o Added SEAICE_initialHEFF to pkg/seaice
165    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
166    
167    checkpoint48g_post
168    --- EOS:
169    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
170      store total Potential in totPhyHyd for diagnostics & EOS.
171    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
172    --- Pressure/geopotential gradient:
173    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
174    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
175      ( changes results of global_ocean_pressure )
176    o NLFS + z-coord.: add eta*Rho' contribution.
177    o accurate phiHyd when using interface-W at the middle between 2 centers
178     ( changes results of ideal_2D_oce )
179    o includes r* 2nd term in potential gradient.
180    
181    checkpoint48f_post
182    Merging from release1_p12:
183    o Modifications for using pkg/exf with pkg/seaice
184      - improved description of the various forcing configurations
185      - added basic radiation bulk formulae to pkg/exf
186      - units/sign fix for evap computation in exf_getffields.F
187      - updated verification/global_with_exf/results/output.txt
188    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
189      (SBO) core products, including oceanic mass, center-of-mass,
190      angular, and bottom pressure (see pkg/sbo/README.sbo).
191    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
192      to avoid negative values in shallow regions.
193      - updated verification/natl_box/results/output.txt
194      - updated verification/lab_sea/results/output.txt
195    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
196    o Added useSingleCpuIO option (see PARAMS.h).
197    o Updated useSingleCpuIO option in mdsio_writefield.F to
198      work with multi-field files, e.g., for single-file pickup.
199    o pkg/seaice:
200      - bug fix in growth.F: QNET for no shortwave case
201      - added HeffFile for specifying initial sea-ice thickness
202      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
203    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
204      kpp_transport_t.F, forward_step.F, and the_main_loop.F
205    o pkg/seaice:
206      - adjoint-friendly modifications
207      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
208    
209    checkpoint48e_post
210    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
211    o dynamics: change definition of computational domain & adapt mom_fluxform
212      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
213    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
214        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
215        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
216        global_ocean.90x40x15 global_with_exf global_ocean_pressure
217        inverted_barometer solid-body.cs-32x32x1
218      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
219    
220    checkpoint48d_post
221    o in preparation for r*:
222     a) use pre-computed gradient of hydrostatic potential:
223        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
224     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
225        => affects results of glob_oce_pressure (different truncation error)  
226      update output.txt of ideal_2D_oce & global_ocean_pressure
227    
228    checkpoint48d_pre
229    o in preparation for r*:
230      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
231      pass the 2 comp. of the grad. as arguments to momentum S/R.
232      but for the moment, only used if it does not change the results.
233    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
234    
235    checkpoint48c_post
236    Modifications in treatment of initial flux forcing controls
237    to avoid extra storing of flux fields.
238    
239    checkpoint48c_pre
240    o Added tidal_basin_2d experiment (currently 1D!)
241    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
242    
243    checkpoint48b_post
244    o r* coordinate added in #ifdef NONLIN_FRSURF block.
245     (modification to pressure gradient not yet implemented)
246    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
247      (for U & V) that are used for vertical advection of momentum.
248    
249    checkpoint48a_post
250    o In preparation for r*, use temp. array to compute vertical transport
251       in flux-form momentum pkg. => change results of few test-exp.
252      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
253                        lab_sea, natl_box & plume_on_slope
254    
255    checkpoint48
256    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
257    
258    checkpoint47j_post
259    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
260    o moved adexch from forward_step to addummy_in_stepping
261    o added exch in ctrl_map_...
262    o aveFreq.=0. at end of cost_final to avoid overwrite in
263      reverse checkpointing loop
264    o Yet more changes in gmredi:
265      * adgmredi_calc_tensor
266        avoiding all recomputation of gmredi_slope_limit
267      * adgmredi_x/y/rtransport
268        added flag for excessive storing to avoid recomp. of
269        u/v/rtans, dTdx/y/z
270        -> this is not really necessary and very memory-consuming
271      * adgmredi_slope_psi:
272        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
273      * gmredi_slope_limit
274        re-activated full calculation of taperfct for case 'ac02'
275    o updating verification/ adjoints of carbon, global_ocean.90x40x15
276    
277    checkpoint47i_post
278    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
279    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
280      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
281    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
282    o gmredi: fix few bugs.
283    
284    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
285    This will be a good checkpoint to plug into the ecco-branch.
286    o few modif.'s to get latest version adjointed
287      (mainly kick out code in ini_linear_phisurf)
288    o modif's to run adjoint with exactConserv
289    o case GM_BOLUS_ADVEC should be cleaned
290      S/R gmredi_slope_psi should be cleaned
291    o verification/carbon now has exactConserv=.TRUE.
292    
293    checkpoint47g_post
294    o time-average AIM output: becomes independent from statvars time-average
295      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
296    o After TAF bug fix:
297      Tested adjoint of gmredi package.
298      Tests were done with checkpoint47 rather than with latest
299      checkpoint47f_post since the latter is broken for the adjoint
300      verification/carbon/ contains both ADM and TLM gradient checks.
301    Here they are, before they get changed/lost/stolen.
302    Mostly modif.'s to fix numerical sensitivities.
303    Gradient checks OK for
304    - GM_taper_scheme:
305      * clipping
306      * ac02
307      * linear
308      * glw91
309      * dm95
310      * ldd97
311    - GMREDI_OPTIONS:
312      * GM_VISBECK_VARIABLE_K
313      * GM_NON_UNITY_DIAGONAL
314      * GM_EXTRA_DIAGONAL
315      * GM_BOLUS_ADVEC
316    in conjunction with data.gmredi parameters to be checked in
317    in a few minutes under verification/carbon/code/
318    
319    checkpoint47f_post
320    Merging from release1_p10:
321    o modifications for using pkg/exf with pkg/seaice
322      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
323        and SEAICE_EXTERNAL_FLUXES
324      - pkg/exf CPP options EXF_READ_EVAP and
325        EXF_NO_BULK_COMPUTATIONS
326      - usage examples are Experiments 8 and 9 in
327        verification/lab_sea/README
328      - verification/lab_sea default experiment now uses
329        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
330    
331    checkpoint47e_post
332    o created a tag prior to creating a branch
333    
334    checkpoint47d_post
335    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
336      at the bottom boundary had an erroneous half slip boundary condition
337    o added bottom drag and no slip boundary condition capabilities to
338      oceanic pressure coordinates code
339    o added new verification experiment global_ocean_pressure, this experiment is
340      also described in the tutorial section of the manual
341    checkpoint47d_pre
342    
343    checkpoint47c_post
344    o Added a verification experiment for a global cubed-sphere ocean run
345      -  verification/global_ocean.cubed32x32x30
346      -  uses pkg/therm_seaice and pkg/bulk_forcing
347    
348    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
349    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
350      when using P-coordinate; only implemented for atmospheric config.
351    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
352      NOTES: requires option NONLIN_FRSURF to be "#define".
353    o update advect_xz/results/output.txt (left from checkpoint44g_post)
354    
355    checkpoint47b_post
356    Merging from release1_p9:
357    o pkg/seaice
358      - removed GOTO's and added taf directives
359      - double precision constants to reduce the g77 (Linux)
360        to F77 (SGI) differences reported in release1_p8
361    o tools/genmake
362      - added SGI options
363    o verification/testscript
364      - updated to that of checkpoint47a_post
365    o verification/global_ocean.90x40x15/input/eedata
366      - modified for SGI f77 compatibility
367    o verification/lab_sea
368      - added description of sea-ice model
369      - added missing matlab routines
370      - added test of thermodynamics parallelization
371    
372    checkpoint47a_post
373    o new pkg: aim_v23
374     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
375       for now, keep the same surface forcing as before.
376     - Part-Cell implemented into AIM; check that Heat & Water are conserved
377     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
378     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
379    o add diagnostic of surface correction term in monitor output
380    
381    o bulk_force and therm_seaice
382    - Two packages:  bulk_force (Bulk forcing)
383      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
384    - Earlier integration from Stephaine Dutkiewicz
385      and Patrick Heimbach.
386    - Two ifdef statements for compile time,
387       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
388    
389    checkpoint47
390    differentiable version of checkpoint46n_post
391    o bug fix in quasihydrostaticterms
392    o * "clean" adjoint code (in terms of extensive recomputations)
393        can now be obtained for all GMREDI options (i.e. for
394        - GM_VISBECK_VARIABLE_K
395        - GM_NON_UNITY_DIAGONAL
396        - GM_EXTRA_DIAGONAL
397        - GM_BOLUS_ADVEC )
398      * However, wrong gradient check problem remains unsolved.
399      * New CPP options have been introduced for different
400        tapering schemes
401    o external_fields_load now part of differentiation list
402    o pressure needs multiple storing;
403      would be nice to have store_pressure at beginning or
404      end of forward_step, e.g. by having phiHyd global (5-dim.)
405      (NB: pressure is needed for certain cases in find_rho,
406      which is also invoked through convective_adjustment).
407    o recomputations in find_rho for cases
408     'JMD95'/'UNESCO' or 'MDJWF' are OK.
409    o #define ATMOSPHERIC_LOADING should be differentiable
410    o ini_forcing shifted to begining of initialise_varia
411    o Incorporating QNVS line search routines into MITgcm
412      (this is separate code, and therefore not under pkg)
413      lsopt/, optim/
414    o Updated verification/carbon/
415      - #define GM_VISBECK_VARIABLE_K
416      - GM_taper_scheme    = 'ldd97'    
417    
418    checkpoint46n_post
419    Merging from release1_p8:
420    o verification/natl_box:
421      updating new external_fields_load routine
422    o New package: pkg/seaice
423      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
424      The sea-ice code is based on Hibler (1979-1980).
425      Two sea-ice dynamic solvers, ADI and LSR, are included.
426      In addition to computing prognostic sea-ice variables and diagnosing
427      the forcing/external data fields that drive the ocean model,
428      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
429      The implied surface heat flux is then stored in variable
430      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
431      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
432      non-local transport term.  Because this call precedes model
433      thermodynamics, temperature under sea-ice may not be "exactly" at
434      the freezing point by the time theta is dumped or time-averaged.
435      N.B.: fairly large differences in accuracy occur across
436            different platforms/compilers; comparison between
437            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
438            generated output gives:
439       T           S           U           V
440      C D M    c        m  s        m  s        m  s        m  s
441      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
442      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
443      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
444    
445      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
446    o GAD:
447      - generated new common blocks to account for call of
448        same gad routines with differing traceridentities
449        (needed to modify tracerIdentity indices in GAD.h)
450      - generated separate common blocks for case useCubedSphereExchange
451        (Department of Futurology)
452      - parameter lists to gmredi_?transport: added tracerIdentity
453      - added new key indices to tamc.h
454    o external_fields_load:
455      - added this routine to TAF list
456      - needed to make some common blocks global and additional storing
457        along the same lines as exf package (checkpoint_lev?_directives.h)
458    o exf:
459      updated external forcing package
460      - bug fixes carried over from ecco-branch
461        (missing OBCS_OPTIONS.h in two routines)
462      - enable easy to use "no forcing".
463      - added exf I/O for atmospheric loading
464      - added exf I/O for runoff data
465      - transfered scaling between exf <-> MITgcm to exf namelist
466    o Adding new verification experiment global_with_exf.
467      This verification experiment is almost identical to the
468      global_ocean.90x40x15 experiment, except that it uses
469      the exf (and cal) package instead of the
470      external_fields_load routine (cf README file).
471    
472    checkpoint46m_post
473    o modified testscript to return -- when there are no lines of "%MON" output
474    o added new flag "quasiHydrostatic" for QH mode
475      and new routine quasihydrostaticterms()
476    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
477      New routine: mom_u_coriolis_nh()
478    o fixed sign of non-hydrostatic metric terms in u and v equations.
479      Depend on correct sign of gravitySign.
480    o added work.pc* to .cvsignore in aim directories using ifc
481    o introduced flag for controllin non-hydrostatic metric terms
482    o removed gravitySign from PARM04
483    o switched to g77/ifc from pgf77 in aim experiments
484    
485    checkpoint46l_post
486    o made convective adjustment work with pressure coordinates:
487     - changed the direction of k-loop in convective_adjustment.F for the
488       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
489     - adjusted the reference pressure k-index in convective_adjustment.F
490     - adjusted the convection condition in convect.F (in analogy to
491       calc_ivdc.F)
492     - convective_adjustment no longer computes anything on the halos
493     - removed the warnings about negative salinity from find_rho.F and
494       find_alpha.F; instead the new routine look_for_neg_salinity, called
495       at the beginning of find_rho, find_alpha, and find_beta, does a
496       check of the entire slice, if CPP-option
497       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
498    checkpoint46l_pre
499    
500    checkpoint46k_post
501    o fixed the verification/global_ocean.90x40x15 experiment:
502     - new bathymetry (the world according to A., JMC, and M.)
503     - new initial fields and forcing fields (*.bin files)
504     - new POLY3.COEFFS (for the next release one should switch to a full
505       equation of state: JMD95P or MDJWF)
506     - fixed several errors and redundancies in the data file
507     - experiment uses looped cells
508     - added matlab directory with diagnostic scripts for plotting of output
509    
510    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
511     - read AIM physics parameters from a file (data.aimphys)
512     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
513    
514    checkpoint46j_post
515    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
516    o move wVel computation at the end of the time step, in S/R integr_continuity
517    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
518    o update timeave pkg for wVel diagnostic.
519    checkpoint46j_pre
520    
521    checkpoint46i_post
522    o Clean up AIM package (and keep the results unchanged):
523      include CPP_OPTION and use IMPLICT NONE in all routines ;
524      declare all the variables _RL ; use _d 0 for all numerical constants.
525      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
526    
527    checkpoint46h_post
528    o cleaned up the use of rhoNil and rhoConst.
529      - rhoNil should only appear in the LINEAR equation of state, everywhere
530        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
531        and the dynamical equations are all divided by rhoConst
532    o introduced new parameter rhoConstFresh, a reference density of fresh
533      water, to remove the fresh water flux's dependence on rhoNil. The default
534      value is 999.8 kg/m^3
535    o cleanup up external_forcing.F and external_forcing_surf.F
536      - can now be used by both OCEANIC and OCEANICP
537    checkpoint46h_pre
538    
539     Added code to convert surface volume flux (fresh water) into
540     a mass flux when using P coordinates in the ocean (OCEANICP).
541     Note: It assumes you have set rho0=rhoConst=density of fresh water.
542    
543    checkpoint46g_post
544    o Include a new diagnostic variable phiHydLow for the ocean model
545      - in z-coordinates, it is the bottom pressure anomaly
546      - in p-coordinates, it is the sea surface elevation
547      - in both cases, these variable have global drift, reflecting the mass
548        drift in z-coordinates and the volume drift in p-coordinates
549      - included time averaging for phiHydLow, be aware of the drift!
550    o depth-dependent computation of Bo_surf for pressure coordinates
551      in the ocean (buoyancyRelation='OCEANICP')
552      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
553        Theta, Salinity, and Pressure in the parameter list. This routine is
554        presently contained in find_rho.F. This routine does not give the
555        correct density for 'POLY3', which would be a z-dependent reference
556        density.
557    o cleaned up find_rho
558      - removed obsolete 'eqn' from the parameter list.
559    o added two new verification experiments: gop and goz
560      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
561    checkpoint46g_pre
562    
563    checkpoint46f_post
564    o Enable tangent linear (forward mode) gradient checks:
565      - extended active file handling to g_... files
566      - added TANGENT_SIMULATION to theSimulationMode
567      - extended grdchk package accordingly
568    o added tangent linear setup in verification/carbon/code_ftl
569    o added adjoint setup in verification/front_relax/code_ad
570    
571    checkpoint46e_post
572    o Added new equation of state -> MDJWF
573      - EOS of McDougall et al., 2002, JAOT, submitted
574      - caveat: the equation of state is only valid for a smaller (more
575        realistic?) range of values than JMD95P/Z and UNESCO
576      - added masks to the calculation of pressure in store_pressure
577      - added more check values for density in check_eos (ini_eos.F), some of
578        the old check values are out of the range of the MDJWF-eos, so don't
579        expect perfect matches for those
580    checkpoint46e_pre
581    
582    checkpoint46d_post
583    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
584      'OCEANICP', also initialised field pressure correctly in ini_eos in the
585      case of pressure coordinates. eosType='JMD95Z' in
586      combination with buoyancyRelation='OCEANICP' now causes an error.
587    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
588      in find_alpha/beta.
589    checkpoint46d_pre
590    
591    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
592      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
593    
594    checkpoint46c_post
595    o Changes necessary for ocean in p-coordinates
596     -  Added new buoyancy relation = 'OCEANICP'
597     -  Added new parameters = gravitySign (this used to be contained inside
598        the factor dRdZ which I added when we first switched to R coordinates).
599     X GM/Redi is not compatible (yet)
600     X bottom drag and no-slip need to be debugged.
601    checkpoint46c_pre
602    
603    checkpoint46b_post
604    o Added new equation of state -> JMD95Z and JMD95P
605      - EOS of Jackett and McDougall, 1995, JAOT
606      - moved all EOS parameters into EOS.h
607      - new routines ini_eos.F, store_pressure.F
608    o Added UNESCO EOS, but not recommended because it requires
609      in-situ temperature (see JMD95)
610    o Modified formatting for knudsen2.f in utils/knudsen2 and added
611      unesco.f to be used with POLY3
612    checkpoint46b_pre
613    
614    checkpoint46a_post
615    o Added (atmospheric) pressure loading
616      - new field in FFIELDS.h, etc...
617      - new cpp flag ATMOSPHERIC_LOADING
618    o Changed hFacC to _hFacC in calc_phi_hyd.F
619    o Added SHORTWAVE_HEATING to some files for consistency
620    checkpoint46a_pre
621    
622    checkpoint46
623    further merges from release1_p5
624    o new ctrl package
625      - adopted from ECCO environment to enable optimization
626      - added Eliassen Palm fluxes to controls
627    o added Eliassen Palm flux controls to gradient check package
628    o cost package
629      - Compatible with new ctrl package
630      - added Eliassen Palm cost hooks
631      - modif's of existing cost functions
632    o Adjoint-related bug fixes in kpp:
633      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
634      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
635    o autodiff package
636      - flow directives:
637        + new for S/R do_the_model_io
638        + enhanced for S/R checkpoint
639        + new gmredi.flow
640      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
641        disable adcommon.h/g_common.h by default.
642      - fixed problem for adjoint of global_max
643    o modified verification/carbon/
644    o New setup for adjoint of global_ocean
645    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
646    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
647    o incorporated hooks for sponge layer code (external_forcing.F)
648    
649    checkpoint45d_post
650    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
651    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
652      (affects plume_on_slope "cg2d" output)
653    o add new parameter deltaTfreesurf for free-surface time stepping
654    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
655    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
656    o change phiMin in exp1 (to agree with documentation)
657    o add new flags:
658     - T,S forcing inside/outside Adams-Bashforth
659     - turn off temp,salt advection and/or forcing
660     - for each tracer, define internal flag for multiDimAdvection & A-B
661    o monitor: change definition of KE to check conservation of Energy
662    
663    checkpoint45c_post
664    o Removed f90 comments ("!")
665    o Modified initialisations to enable exf package for MITgcm
666      (without invoking ECCO_PACKAGE).
667    o modifications to gradient check package (Martin Losch)
668      - enable centered differences
669      - modified format of standard output
670    
671    checkpoint45b_post
672    o cleaned exchange calls in cg2d
673    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
674    o included CPP option SINGLE_LAYER_MODE in thermodynamics
675      to configure barotropic setup (Martin Losch)
676    o moved some initialisations within bi,bj loop in dynamics
677      (TAF flow dependency)
678    o in initialise_varia, moved call packages_init_variables
679      before convective_adjustment_init
680      (corresponding adjustment of TAF tape initialisation).
681    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
682    
683    checkpoint45a_post
684    o compute Rho over the whole domain (extend iMin,jMin indices)
685    o specific exchange for X-slice domain (case Ny=1)
686    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
687    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
688    
689    checkpoint44h_post = checkpoint45
690    o Fix to restore differentiability:
691      place at which packages_init_variables is called in
692      initialise_varia is crucial for reverse control flow.
693    o modifications in GMRedi to enable stable adjoint
694      (corresponding modif's in thermodynamics, dynamics)
695    o added missing hook for sponge layer code in external_forcing
696    o modified test cost functions
697    o storing in gad_advection (plus removal of write(0,*)!
698    o missing headers TR1.h added in convective_adjustment routines
699    o errorMessageUnit set non-equal zero in eeboot
700      (conflict on some platforms, e.g. IBM SP3)
701    o modified carbon verif.
702    
703    checkpoint44h_pre
704    o vertical grid option: allow to put the Interface at the middle between
705      2 cell-centers ; replace delZ in pkg/kpp by drF.
706    o GM Advective form: Tracers are advected using the residual transport (=
707      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
708    
709    checkpoint44g_post
710    o fix surface correction term in multiDimAdvection (affects plume_on_slope
711      results) ; ifdef missing in thermodynamics.F
712    
713    checkpoint44f_pre,checkpoint44f_post
714    o added PTRACERS package
715      This allows an arbitrary number of passive tracers to be integrated
716      forward simultaneously with the dynamicaly model.
717      + Implemented so far:
718        - basic forward algorithm (time-stepping, advection, diffusion, convection)
719        - I/O and checkpointing
720        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
721      + Not implemented so far:
722        - KPP
723        - OBCS
724      + No specific example supplied (yet) but global_ocean.90x40x15 has the
725        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
726        line in data.pkg.
727      + This package is disabled by default since it increases storage.
728    
729    
730    o testscript: added -cleanup option
731    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
732                 b) enable to filter 2D fields.
733    
734    checkpoint44e_pre,post
735    o re-wrote convective adjustment to use pre-calculated weights
736      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
737      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
738      Original calls to convect() still in place.
739    
740    chkpt44d_pre,post
741    o added missing EXCLUDE_MONITOR flags
742    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
743      (incompatible typ in MIN/MAX expressions caused problems
744      on IBM SP3)
745    o in genmake added variable MAKEDEPEND
746      plus resetting for case SunOS
747    o added timer_stats.c routine for IBM SP3
748    o removed variables in dynamics
749    !!! I forgot to create tag chkpt44d_pre !!!
750    !!! But chkpt44d_pre = chkpt44c_post    !!!
751    
752    o real fresh water flux implemented with non-linear free-surface.
753    
754    chkpt44c_pre,post
755    o few fix (mask in shap_s2, EmPmR in external_field_load,
756      USE_NATURAL_BCS in solve_for_P);
757    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
758    
759    checkpoint44b_pre/_post
760    o merge of relevant stuff from the ecco-branch:
761      - genmake: removed $S64 overwrite for case SunOS
762      - pkg/exf: update and corrections for field swapping and obcs
763      - pkg/ecco: parameter lists for the_model_main, the_main_loop
764                  harmonized between ECCO and MITgcm
765      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
766                      updated checkpointing_lev... lists for obcs
767      - model/src: minor changes in forward_step, plot_field
768                   added directive for divided adjoint in the_main_loop
769      - pkg/mdsio: added mdsio_gl_slice
770    
771    o check parameters & config (chkpt44a_pre,post)
772    o OBC and NonLin_FrSurf.
773    
774    checkpoint44
775    o fix bug in mom_vi_del2uv
776    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
777    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
778    o update AIM experiments (NCEP input files)
779    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
780    o added some stuff for AD
781    
782    checkpoint43
783    o added two new advection tests
784    o added global 4x4 degree ocean test
785    o added test of H&S94 with free surface on cube
786    o some final mods for gradient check, adjoint,...
787    
788    checkpoint42
789      Fixed AD-related problems:
790    o Store directives up-to-date with re-arranged Adams-Bashforth
791      (mainly thermodynamics.F)
792    o New store directives for multi-dim. advection schemes
793      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
794      * new common block and key passkey
795      (mainly gad_advection.F)
796    o Modified store directives for split of dynamics/thermodynamics
797      for the case ALLOW_KPP
798    o Cleaned argument list for timestep_tracer.F
799    
800    checkpoint41
801    o re-formatted/added comments in prologues of key subroutines
802      to work with protex
803    
804    checkpoint40
805    o moved calc_gs, calc_gt and calc_tr1 back to model/src
806    o added FLT (floats) package from Arne along with demo. experiment
807    o re-arranged Adams-Bashforth scheme for tracers to allow easier
808      implementation of forward-in-time forcing terms
809    o more mods for non-linear free-surface including new variable
810    o modified multi-dim method to work on cube
811    o bug fix in KPP (from DM)
812    
813    checkpoint40pre9
814    o added DST advection schemes
815    o fix MPI bug on SGI's
816    o modifications for non-linear free-surface
817    o fixed conditionals for fixed flow/passive tracer only mode
818    o added tension/strain form of stress tensor
819    o changes to commenting of arguments for TAF/TAMC
820    o added/updated many matlab scripts
821    o added multi-dimensional advection method for tracers
822      
823    checkpoint40pre8
824    o new package rw/
825      Added method for dumping intermediate local arrays:
826      mdsio_writetile - same as mdsio_writefield except works from inside
827                        bi,bj loop
828      mdsio_writelocal - same as mdsio_writetile except works for local
829                         arrays
830      write_local_r? - higher-level wrapper for mdsio_writelocal
831      Controlled by diagFreq. Defaults to zero (ie. no dumps)
832      Example given at end of mom_vecinv.F that dumps some local arrays.
833    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
834      control flux-form versus vector invariant code.
835      Switch is runtime flag vectorInvariantMomentum (defaults to false)
836      or genmake -DISABLE ...
837    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
838      (additional storing is now needed for case vecinv;
839      currently nothing implemented to switch this storing off
840      in case fluxform is used since no CPP flag available).
841    
842    checkpoint40pre7
843    o bug fix in dynamics.F
844      calc_viscosity called before k=1,Nr loop.
845    o added some #ifdef's ALLOW_PASSIVE_TRACER
846    o cleaned initialisations in ctrl_map_ini
847      related to TAF
848    
849    checkpoint40pre6
850    o split dynamics into thermodynamics & dynamics
851    o corresponding split of calc_diffusivity into
852      calc_diffusivity, calc_viscosity
853      (kpp_calc_diff, kpp_calc_visc).
854    o Added diffkr, kapgm to control variables
855    o bug fix in gmredi_slope_limit for ldd97
856    
857    checkpoint40pre5
858    o proper initialization of Adams-Bashforth time stepping
859      + uses forward step for very first step of model (iter=0)
860    o re-generated *all* output since almost all output is modified by this
861      change (sorry but we've been putting this one off for about 2 years)
862      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
863        *not* regenerated since they are already out of date and I don't
864        want to create the impression that they are suddenly working.
865    o removed KAP stuff for DEC's
866    o modified/added many .cvsignore files in */code and */input
867    o added new expt "solid-body.cs-32x32x1"
868      + this uses an alternative form of ini_curvilinear_grid.F which
869        is not necessarily any better than the current one...
870    
871    checkpoint40pre4
872    o added re-initialisations of utrans,vtrans,rtrans in
873      calc_common_factors which are crucial for TAF.
874    o extended iMin,jMin range for calc_common_factors,
875      calc_diffusivity
876    o added option ALLOW_PASSIVE_TRACER
877    o a few minor updates and fixes
878    
879    checkpoint40pre3
880    o created calc_gtr1.F for gad package
881    o split the_main_loop and re-introduced forward_step
882    o some recomputations of nIter0 for TAMC
883    
884    checkpoint40pre2
885    o Updated to latest branch of AJA, JMC
886    o Added gradient check package
887    o Added routines for passive tracer handling
888    o Added carbon sequestration sensitivity experiment
889    
890    checkpoint39
891     o Modifications and fixes to support TAMC
892       (mainly missing or wrong directives)
893     o Corrected common blocks when fooling TAMC to produce adjoint I/O
894       in addummy_in_stepping
895     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
896     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
897     o Included following packages:
898       cal: calendar
899       exf: external forcing
900       ecco: essential routines to control use of cal, exf
901             (NB: this is not the full ECCO environment)
902     o disabled some packages by default in genmake
903    
904    checkpoint38
905     o see notes_c37_adj.txt
906     o corrected wrong layer index in external_forcing_t
907     o replaced the_main_loop/forward_step by the_main_loop
908     o removed forceoutput from write_state
909       (replaced criteria for initial/final state)
910     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
911    
912    checkpoint37
913     o mdsio.F routine split and packaged in pkg/mdsio
914       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
915        used unless genmake -disable=mdsio)
916     o allow a more precise surface-geopotential gradient for the atmosphere
917       taking into account the change in space of Alpha (=1/rho) at the surface.
918     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
919       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
920     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
921       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
922       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
923     o Time-Average diagnostics defined as a pseudo package "timeave".
924     o pickup files : old pickup (before c35) did not work with new code (c35
925       and after) unless activating 2 commented lines in initialise-varia.
926     o Non-Hydrostatic pickup file Pb fixed.
927     o bug with Rigid-lid version (since c35) fixed.  
928    
929    checkpoint36
930     o implement Crank-Nickelson barotropic time-stepping
931     o recover Time-Average diagnostics
932     o fix Pb in checkpoint (PR#19)
933     o AIM become a standard package ; clean unused CPP_kees
934    
935    checkpoint35
936     o subtantial rewrite of dynamics.f
937     o allows staggered time-stepping
938     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
939     o added bottom drag (linear + quadratic)
940    
941    checkpoint34
942     o Modified exchange routines for correct reverse simulation.
943     o Added verification output to comply with bug fix in impldiff.F
944       as of c33 (exp2, natl_box).
945     o Corrected store directives in dynamics.F
946     o Corrected array boundaries in impldiff.F
947     o Corrected array dimensions in gmredi.
948       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
949     o Added routine GLOBAL_SUM_INT to global_sum.F
950     o Added mdsio_gl.F for ECCO purposes.
951    
952    checkpoint33
953     o Fixed bug in lower BC in impldiff.F
954     o Fixed confusion about units of forcing arrays in FFIELDS.h
955       namely Fu,Fv,Qnet,Qsw,EmPmR:
956       - Removed verification/natl_box/code/external_fields_scale.F
957         (did not differ from that in model/src)
958       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
959         (see FFIELDS.h for description)
960       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
961         kpp_calc.F and kpp_transport_t.F
962       - Removed model/src/external_fields_scale.F and calls to it
963       - verification/natl_box uses flux data with "atmospheric" sign so
964         a special version of external_fields_load.F is used to
965         change the data as it's read in. This way, the arrays
966         have the right units and signs at all times tha a user could
967         possibly use them.
968     o Corrected genmake to delete a temporary file during configuration
969    
970    checkpoint32
971     o Scaling of forcing fields moved from external_forcing.F to
972       external_fields_scale.F, called directly after loading fields.
973     o Surface relaxation terms added to surface tendency fields in
974       extra subroutine.
975     o impldiff.F changed to avoid storing by TAMC of huge intermediate
976       fields.
977     o Changes in GMRedi to comply with packaging structure.
978     o Modifications and bug fixes in KPP package.
979     o Verification experiment for KPP added (verification/nat_box/)
980    
981    checkpoint31
982     o Packages interface brought in line with defined standard
983       -> new routines packages_...F
984       -> changes in initialise_fixed.F, initialise_varia.F
985       -> enables initialisation interface for ECCO package
986     o Rescaling of external forcing fields immediately after read
987       (removed from external_forcing.F)
988       -> new: surface_fields_scale.F
989       -> affects ini_foorcing.F, external_fields_load.F
990     o Computation of surface tendencies before tendency updates.
991       -> new: external_forcing_surf.F
992     o Change of variable names useGMRedi, useKPP, useECCO
993     o Further changes in dynamics.F, impldiff.F for TAMC
994     o Tested for experiments 0, 2, 4.
995       - not yet tested for GMRedi.
996       - not yet tested for KPP.
997    
998    checkpoint30
999     o Updates for OBCs
1000     o New experiment for test OBCs (internal_wave)
1001     o New output.txt in verification/exp4/results/
1002     o Updates for KPP: calculation of viscosity corrected, new variables
1003       kpp_dumpFreq and kpp_taveFreq
1004     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1005       and entry for T90 in genmake
1006    
1007    checkpoint29
1008     o packaged KPP and GM/Redi
1009    
1010    checkpoint28
1011     o Corrected initialization of hFacMin for difference vertical coordinates
1012     o Modified calculation of partial cell thickness to more robust algorithm
1013     o config_summary.F: replaced write_1D_... by write_0D_...
1014       read_write.F: added subroutines write_0D_...
1015     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1016       included some initialisations required for TAMC.
1017     o routine calc_isoslopes: modified sqrt computation to make it
1018       differentiable for zero argument.
1019     o routines dynamics, impldiff:
1020       included store directives and tape key computations required for TAMC.
1021     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1022    
1023    checkpoint27
1024     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1025       formulation works properly with variable resolution.
1026     o restructured the calling tree between the_model_main() and dynamics()
1027     o split initialise() into initialise_fixed() and initialise_varia()
1028     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1029       in new routine ini_psurf()
1030    
1031    checkpoint26
1032     o moved some #ifdef in optional routines to encompass everything
1033       except the argument declarations. This was using up some memory.
1034     o fixed macros like _ADT to work with both versions of Linux cpp
1035     o cleaned up some unused and uninitialized variables
1036       (helps when debugging with strict compile options)
1037     o split up CPP_EEOPTIONS.h into options and macros
1038       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1039     o patch for 2 processor JAM mode
1040    
1041    checkpoint25
1042     o updates for OBCs and NH
1043     o dramatically reduced memory usage
1044     o added "JAM" routines for use on Artic network
1045     o parameterization of convection by implicit vertical diffusion
1046     o added a diagnostic of convective index
1047     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1048       (this is was partly for OBCs and NH but also in anticipation of
1049        an explicit free-surface option)
1050     o initial state input files for U and V
1051    
1052    checkpoint24
1053     o Removed some spurious "REAL"s
1054     o Updated KPP to latest version from JPL
1055     o Added a COS(latitude) in horizontal viscosity
1056    
1057    checkpoint23
1058     o Added del^4 diffusion for salt and temperature
1059     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1060    
1061    checkpoint22
1062     o Made many small changes: implicit none, format(i5), etc...
1063     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1064    
1065    checkpoint21
1066     o Introduced new I/O package that supports direct-access records (mdsio.F)
1067     o Split-up mid-level I/O routines
1068     o Updated input data for experiments 0,1,2,4 and 5
1069     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1070    
1071    checkpoint20
1072     o Tidied up open-boundaries some more
1073     o Added non-hydrostatic code
1074     o Fixed some input data
1075     o Modified MPI start-up to work in "coupled" context.
1076    
1077    checkpoint19
1078     o Tidied up directory structure for verification experiments.
1079     o Added new code for open boundaries.
1080     o Corrected advective terms near boundaries.
1081     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1082     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1083     o Split default parameters out of ini_parms.F into set_defaults.F.
1084    
1085    checkpoint18
1086     o Further changes for optional code generation with
1087       CPP - ugh!
1088    
1089    checkpoint17
1090     o Beginning to incorporating modularity
1091       for supporting atmos. and ocean configs.
1092     o Small changes for TAMC complinace
1093     o New ultra simple test case. Barotropic box
1094       configuration "exp0".
1095    
1096    checkpoint16
1097     o Minor changes to exchange routines to support
1098       accumulation in reverse mode. Adjoint of an
1099       assignment is an addition.
1100     o Changes to support compilation by TAMC (LR(1)
1101       syntax) and by g77 under Linux ( 72 character
1102       limit ).
1103    
1104    checkpoint15
1105     Rewrote exchange routines to allow
1106     o General tile <-> tile connectivity.
1107     o TAMC reverse mode flag ( is this really needed? )
1108     o Variable width overlap and exchange region widths.
1109     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1110       shmput/shmget, VIA, SYSV shmem and every other cool
1111       communication method.
1112    
1113    checkpoint14
1114     Consistent isomorphism chages made. These allow dynamical core
1115     to support both pressure and meters as a vertical coordinate.
1116    
1117    checkpoint13
1118     Release which corrects global_max problem and a couple
1119     of KGM time-averaging diagnostic errors. Also contains
1120     a double-gyre experiment setup as well as the baseline
1121     4 degree global template. The double gyre template is
1122     organised to allow it to be applied automatically to
1123     the baseline configuration.
1124    
1125    branch-point-rdot
1126     A few tidy-ups have been made bt the real point of this
1127     check-point (excuse the pun) is to allow a branch to be
1128     made for the purposes of adding the rDot alterations.
1129     I don't want to commit the rDot to the main-trunk until
1130     we've actually tested it...
1131    
1132    checkpoint12
1133     Tidy up and added generic genmake script (formerly
1134     configure script).
1135     Released to testers.
1136    
1137    checkpoint11
1138     Re-arranged initialise() and introduced ini_vertical_grid()
1139     and ini_masks_etc().
1140    
1141    checkpoint10
1142     Introduced the configure script.
1143     Separated out the diags package.
1144     Added template for writing time-averages of tile/intermediate quantities.
1145     Updated SIZE.h in exp2 and made the data big-endian.
1146    
1147    checkpoint9
1148     MPI fix. Filename changes (meta/data). salbin*y stuff.
1149     General tidy-up.
1150     SST.bin SSS.bin added to verification/exp2
1151    
1152    checkpoint8
1153     Inludes time-dependant forcing and time-averaging.
1154     Works at 4x4 and 2.8125x2.8125 global
1155    
1156    checkpoint7-4degree-ref
1157     Branch from checkpoint7. Released for application to
1158     global modeling and general modeling - process studies, regional
1159     model etc..
1160     Configured for verification/exp2 - 4 degree global, two process.
1161    
1162    checkpoint7
1163     Created by cnh
1164     Simple 4 degree global simulation
1165     configuration.
1166     Includes climatological wind,
1167     hydrography, bathymetry etc
1168     Does not include Heat Flux and E-P
1169    
1170  checkpoint6  checkpoint6
1171   Created by cnh   Created by cnh
1172   merged checkpoint5 with CD and   merged checkpoint5 with CD and

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