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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.162 by adcroft, Thu Jun 5 16:16:00 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o AIM: use true log-P extrapolation for near surface temp (= as in
7        F.Molteni paper) ; update aim.5l_cs output.
8    o New variable in PARM03 for more flexible pickups
9    
10    checkpoint50g_post
11    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
12      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
13      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
14        made the default because of faster convergence than ADI
15    
16    checkpoint50f_post
17    o exf totally restructured
18      - replaced all exf_set_ routines by one generic exf_set_gen.F
19        and made sure it's still differentiable
20      - split exf_getffields.F into new exf_bulkformulae.F
21      - exf_inscal_/exf_outscal_ suffixes consistent with field names
22      - updated adjoint/makefile and relevant verif. accordingly
23    
24    checkpoint50f_pre
25     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
26          + change Evap over land. (update aim.5l_cs output)
27     o added missing .cvsignores and made uniform across expts
28     o changed configuration of tidal_basin_2d expt
29     o added pkg/debug functions for tracing code in fatal crashes
30     o tidied pkg/monitor to use MONITOR_OPTIONS.h
31     o new fn in pkg/monitor to stop model if solution grows too big
32     o removed lots of single quotes from comments
33    
34    checkpoint50e_post
35    o make KPP work with PTRACERS
36     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
37       nearly a copy of kpp_transport_s
38     - there is no analogue to SurfaceTendencyS, so I have to use
39       gPtr(of the surface layer) instead
40    o add a new platform SunFire+mpi (SunFire 15000) to genmake
41    checkpoint50e_pre
42    
43    checkpoint50d_post
44    o change kpp output from multiple-record state files to single-record state
45      files analogous to write_state.F
46    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
47      analogous to the cg2d-related output.
48    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
49      so that writing to internal file fn (with length 512) fails.
50    checkpoint50d_pre
51    
52    checkpoint50c_post
53    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
54    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
55    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
56    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
57    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
58    
59    checkpoint50c_pre
60    Merging from release1_p13:
61    o bug fix for pkg/seaice dynamic solver
62    o Added SEAICE_initialHEFF to pkg/seaice
63    
64    checkpoint50b_post
65    o store u*,v* in gU,V instead of in guNm1,gvNm1
66    o in order to put the momForcing out of the Adams-Bashforth:
67      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
68      to timestep.F
69    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
70    o re-generate output for highly sensitive test-exp:
71       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
72    
73    checkpoint50b_pre
74    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
75    o corrected CPP option mismatch in exf_Bulk... functions for case
76      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
77    
78    checkpoint50a_post
79    o Bug fix for merging between c50 and KPP.
80      ikey was passed from thermodynamics to kpp_calc via
81      common block rather than being recomputed in kpp_calc,
82      in contradiction with new key itdkey.
83      New key ikppkey created, and tamc.h headers updated.
84    
85    checkpoint50
86    - 2nd step of merge with ecco-branch:
87      merge changes in ecco-branch back into main trunk
88    - bug fix in find_alpha
89    - more storing in gmredi_calc_tensor.F, kpp_routines.F
90    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
91    - merged some sliced AD support routines
92    
93    checkpoint49
94    merged from ecco-branch:
95    o exf:
96      - Enable initialisation of forcing fields to constant
97        (runtime) values.
98      - in exf_getffields.F
99        Reduce i-/j-loop to interior domain, discarding overlaps.
100        That also fixes wrong TAF-key computations for key_1, key_2
101        with bulf formulae.
102      - exf_init.F modify #ifdef for exf_init_evap
103      - exf_getffieldrec.F, ctrl_getrec.F
104        The following INT-usages are not safe:
105          fldsecs  = int(fldsecs/fldperiod)*fldperiod
106          fldcount = int(fldsecs/fldperiod) + 1
107        and were modified.
108    o autodiff: checkpoint_lev...
109      - updated storing for bulk formulae (some arrays were missing)
110      - added state for seaice package
111      - synchronized with main branch
112    o DIVA:
113      Modif.s in
114      - the_main_loop.F
115      - the_model_main.F
116      and added cost_final_restore.F cost_final_store.F
117      o With these changes, it is possible to fully separate
118        the first forward run to compute the cost function (mdthe_main_loop)
119        and adjoint runs over individual DIVA intervals (adthe_main_loop)
120        into separate model executions.
121        This enables better tuning of DIVA to given queue sizes.
122      o Loss of cost function value in consecutive DIVA runs is
123        fixed by storing to 'costfinal' file.
124      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
125        beginning/end of adjoint integration is accounted for.
126      The current changes apply to TAF-1.4.26.
127      TAF has one remaining bug, requiring one manual change
128      (see MITgcm manual).
129    o cal: synchronized between MAIN and ecco-branch
130    
131    checkpoint48i_post
132    o Changes to restore differentiability of code w.r.t. previous tag
133      (mostly adding new routines to make list and replacing
134      pressure by totPhiHyd).
135    o Updated and merged grdchk package
136      - has both ADM and TLM checks
137      - works for single- and multi-proc.
138      - output cleaned
139      - worked successfully for parallel DIVA
140    o genmake:
141      - Adding -platform=SP4
142      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
143    o Modif. for DIVA:
144      ctrl_unpack should not be called in intermediate DIVA interval.
145      (similar thing would apply for active files such as
146      tbar, sbar, psbar, which should not be reinitialised;
147      only relevant for ecco-branch)
148    
149    checkpoint48h_post
150    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
151    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
152    o Added SEAICE_initialHEFF to pkg/seaice
153    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
154    
155    checkpoint48g_post
156    --- EOS:
157    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
158      store total Potential in totPhyHyd for diagnostics & EOS.
159    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
160    --- Pressure/geopotential gradient:
161    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
162    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
163      ( changes results of global_ocean_pressure )
164    o NLFS + z-coord.: add eta*Rho' contribution.
165    o accurate phiHyd when using interface-W at the middle between 2 centers
166     ( changes results of ideal_2D_oce )
167    o includes r* 2nd term in potential gradient.
168    
169    checkpoint48f_post
170    Merging from release1_p12:
171    o Modifications for using pkg/exf with pkg/seaice
172      - improved description of the various forcing configurations
173      - added basic radiation bulk formulae to pkg/exf
174      - units/sign fix for evap computation in exf_getffields.F
175      - updated verification/global_with_exf/results/output.txt
176    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
177      (SBO) core products, including oceanic mass, center-of-mass,
178      angular, and bottom pressure (see pkg/sbo/README.sbo).
179    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
180      to avoid negative values in shallow regions.
181      - updated verification/natl_box/results/output.txt
182      - updated verification/lab_sea/results/output.txt
183    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
184    o Added useSingleCpuIO option (see PARAMS.h).
185    o Updated useSingleCpuIO option in mdsio_writefield.F to
186      work with multi-field files, e.g., for single-file pickup.
187    o pkg/seaice:
188      - bug fix in growth.F: QNET for no shortwave case
189      - added HeffFile for specifying initial sea-ice thickness
190      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
191    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
192      kpp_transport_t.F, forward_step.F, and the_main_loop.F
193    o pkg/seaice:
194      - adjoint-friendly modifications
195      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
196    
197    checkpoint48e_post
198    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
199    o dynamics: change definition of computational domain & adapt mom_fluxform
200      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
201    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
202        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
203        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
204        global_ocean.90x40x15 global_with_exf global_ocean_pressure
205        inverted_barometer solid-body.cs-32x32x1
206      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
207    
208    checkpoint48d_post
209    o in preparation for r*:
210     a) use pre-computed gradient of hydrostatic potential:
211        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
212     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
213        => affects results of glob_oce_pressure (different truncation error)  
214      update output.txt of ideal_2D_oce & global_ocean_pressure
215    
216    checkpoint48d_pre
217    o in preparation for r*:
218      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
219      pass the 2 comp. of the grad. as arguments to momentum S/R.
220      but for the moment, only used if it does not change the results.
221    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
222    
223    checkpoint48c_post
224    Modifications in treatment of initial flux forcing controls
225    to avoid extra storing of flux fields.
226    
227    checkpoint48c_pre
228    o Added tidal_basin_2d experiment (currently 1D!)
229    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
230    
231    checkpoint48b_post
232    o r* coordinate added in #ifdef NONLIN_FRSURF block.
233     (modification to pressure gradient not yet implemented)
234    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
235      (for U & V) that are used for vertical advection of momentum.
236    
237    checkpoint48a_post
238    o In preparation for r*, use temp. array to compute vertical transport
239       in flux-form momentum pkg. => change results of few test-exp.
240      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
241                        lab_sea, natl_box & plume_on_slope
242    
243    checkpoint48
244    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
245    
246    checkpoint47j_post
247    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
248    o moved adexch from forward_step to addummy_in_stepping
249    o added exch in ctrl_map_...
250    o aveFreq.=0. at end of cost_final to avoid overwrite in
251      reverse checkpointing loop
252    o Yet more changes in gmredi:
253      * adgmredi_calc_tensor
254        avoiding all recomputation of gmredi_slope_limit
255      * adgmredi_x/y/rtransport
256        added flag for excessive storing to avoid recomp. of
257        u/v/rtans, dTdx/y/z
258        -> this is not really necessary and very memory-consuming
259      * adgmredi_slope_psi:
260        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
261      * gmredi_slope_limit
262        re-activated full calculation of taperfct for case 'ac02'
263    o updating verification/ adjoints of carbon, global_ocean.90x40x15
264    
265    checkpoint47i_post
266    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
267    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
268      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
269    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
270    o gmredi: fix few bugs.
271    
272    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
273    This will be a good checkpoint to plug into the ecco-branch.
274    o few modif.'s to get latest version adjointed
275      (mainly kick out code in ini_linear_phisurf)
276    o modif's to run adjoint with exactConserv
277    o case GM_BOLUS_ADVEC should be cleaned
278      S/R gmredi_slope_psi should be cleaned
279    o verification/carbon now has exactConserv=.TRUE.
280    
281    checkpoint47g_post
282    o time-average AIM output: becomes independent from statvars time-average
283      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
284    o After TAF bug fix:
285      Tested adjoint of gmredi package.
286      Tests were done with checkpoint47 rather than with latest
287      checkpoint47f_post since the latter is broken for the adjoint
288      verification/carbon/ contains both ADM and TLM gradient checks.
289    Here they are, before they get changed/lost/stolen.
290    Mostly modif.'s to fix numerical sensitivities.
291    Gradient checks OK for
292    - GM_taper_scheme:
293      * clipping
294      * ac02
295      * linear
296      * glw91
297      * dm95
298      * ldd97
299    - GMREDI_OPTIONS:
300      * GM_VISBECK_VARIABLE_K
301      * GM_NON_UNITY_DIAGONAL
302      * GM_EXTRA_DIAGONAL
303      * GM_BOLUS_ADVEC
304    in conjunction with data.gmredi parameters to be checked in
305    in a few minutes under verification/carbon/code/
306    
307    checkpoint47f_post
308    Merging from release1_p10:
309    o modifications for using pkg/exf with pkg/seaice
310      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
311        and SEAICE_EXTERNAL_FLUXES
312      - pkg/exf CPP options EXF_READ_EVAP and
313        EXF_NO_BULK_COMPUTATIONS
314      - usage examples are Experiments 8 and 9 in
315        verification/lab_sea/README
316      - verification/lab_sea default experiment now uses
317        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
318    
319    checkpoint47e_post
320    o created a tag prior to creating a branch
321    
322    checkpoint47d_post
323    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
324      at the bottom boundary had an erroneous half slip boundary condition
325    o added bottom drag and no slip boundary condition capabilities to
326      oceanic pressure coordinates code
327    o added new verification experiment global_ocean_pressure, this experiment is
328      also described in the tutorial section of the manual
329    checkpoint47d_pre
330    
331    checkpoint47c_post
332    o Added a verification experiment for a global cubed-sphere ocean run
333      -  verification/global_ocean.cubed32x32x30
334      -  uses pkg/therm_seaice and pkg/bulk_forcing
335    
336    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
337    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
338      when using P-coordinate; only implemented for atmospheric config.
339    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
340      NOTES: requires option NONLIN_FRSURF to be "#define".
341    o update advect_xz/results/output.txt (left from checkpoint44g_post)
342    
343    checkpoint47b_post
344    Merging from release1_p9:
345    o pkg/seaice
346      - removed GOTO's and added taf directives
347      - double precision constants to reduce the g77 (Linux)
348        to F77 (SGI) differences reported in release1_p8
349    o tools/genmake
350      - added SGI options
351    o verification/testscript
352      - updated to that of checkpoint47a_post
353    o verification/global_ocean.90x40x15/input/eedata
354      - modified for SGI f77 compatibility
355    o verification/lab_sea
356      - added description of sea-ice model
357      - added missing matlab routines
358      - added test of thermodynamics parallelization
359    
360    checkpoint47a_post
361    o new pkg: aim_v23
362     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
363       for now, keep the same surface forcing as before.
364     - Part-Cell implemented into AIM; check that Heat & Water are conserved
365     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
366     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
367    o add diagnostic of surface correction term in monitor output
368    
369    o bulk_force and therm_seaice
370    - Two packages:  bulk_force (Bulk forcing)
371      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
372    - Earlier integration from Stephaine Dutkiewicz
373      and Patrick Heimbach.
374    - Two ifdef statements for compile time,
375       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
376    
377    checkpoint47
378    differentiable version of checkpoint46n_post
379    o bug fix in quasihydrostaticterms
380    o * "clean" adjoint code (in terms of extensive recomputations)
381        can now be obtained for all GMREDI options (i.e. for
382        - GM_VISBECK_VARIABLE_K
383        - GM_NON_UNITY_DIAGONAL
384        - GM_EXTRA_DIAGONAL
385        - GM_BOLUS_ADVEC )
386      * However, wrong gradient check problem remains unsolved.
387      * New CPP options have been introduced for different
388        tapering schemes
389    o external_fields_load now part of differentiation list
390    o pressure needs multiple storing;
391      would be nice to have store_pressure at beginning or
392      end of forward_step, e.g. by having phiHyd global (5-dim.)
393      (NB: pressure is needed for certain cases in find_rho,
394      which is also invoked through convective_adjustment).
395    o recomputations in find_rho for cases
396     'JMD95'/'UNESCO' or 'MDJWF' are OK.
397    o #define ATMOSPHERIC_LOADING should be differentiable
398    o ini_forcing shifted to begining of initialise_varia
399    o Incorporating QNVS line search routines into MITgcm
400      (this is separate code, and therefore not under pkg)
401      lsopt/, optim/
402    o Updated verification/carbon/
403      - #define GM_VISBECK_VARIABLE_K
404      - GM_taper_scheme    = 'ldd97'    
405    
406    checkpoint46n_post
407    Merging from release1_p8:
408    o verification/natl_box:
409      updating new external_fields_load routine
410    o New package: pkg/seaice
411      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
412      The sea-ice code is based on Hibler (1979-1980).
413      Two sea-ice dynamic solvers, ADI and LSR, are included.
414      In addition to computing prognostic sea-ice variables and diagnosing
415      the forcing/external data fields that drive the ocean model,
416      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
417      The implied surface heat flux is then stored in variable
418      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
419      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
420      non-local transport term.  Because this call precedes model
421      thermodynamics, temperature under sea-ice may not be "exactly" at
422      the freezing point by the time theta is dumped or time-averaged.
423      N.B.: fairly large differences in accuracy occur across
424            different platforms/compilers; comparison between
425            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
426            generated output gives:
427       T           S           U           V
428      C D M    c        m  s        m  s        m  s        m  s
429      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
430      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
431      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
432    
433      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
434    o GAD:
435      - generated new common blocks to account for call of
436        same gad routines with differing traceridentities
437        (needed to modify tracerIdentity indices in GAD.h)
438      - generated separate common blocks for case useCubedSphereExchange
439        (Department of Futurology)
440      - parameter lists to gmredi_?transport: added tracerIdentity
441      - added new key indices to tamc.h
442    o external_fields_load:
443      - added this routine to TAF list
444      - needed to make some common blocks global and additional storing
445        along the same lines as exf package (checkpoint_lev?_directives.h)
446    o exf:
447      updated external forcing package
448      - bug fixes carried over from ecco-branch
449        (missing OBCS_OPTIONS.h in two routines)
450      - enable easy to use "no forcing".
451      - added exf I/O for atmospheric loading
452      - added exf I/O for runoff data
453      - transfered scaling between exf <-> MITgcm to exf namelist
454    o Adding new verification experiment global_with_exf.
455      This verification experiment is almost identical to the
456      global_ocean.90x40x15 experiment, except that it uses
457      the exf (and cal) package instead of the
458      external_fields_load routine (cf README file).
459    
460    checkpoint46m_post
461    o modified testscript to return -- when there are no lines of "%MON" output
462    o added new flag "quasiHydrostatic" for QH mode
463      and new routine quasihydrostaticterms()
464    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
465      New routine: mom_u_coriolis_nh()
466    o fixed sign of non-hydrostatic metric terms in u and v equations.
467      Depend on correct sign of gravitySign.
468    o added work.pc* to .cvsignore in aim directories using ifc
469    o introduced flag for controllin non-hydrostatic metric terms
470    o removed gravitySign from PARM04
471    o switched to g77/ifc from pgf77 in aim experiments
472    
473    checkpoint46l_post
474    o made convective adjustment work with pressure coordinates:
475     - changed the direction of k-loop in convective_adjustment.F for the
476       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
477     - adjusted the reference pressure k-index in convective_adjustment.F
478     - adjusted the convection condition in convect.F (in analogy to
479       calc_ivdc.F)
480     - convective_adjustment no longer computes anything on the halos
481     - removed the warnings about negative salinity from find_rho.F and
482       find_alpha.F; instead the new routine look_for_neg_salinity, called
483       at the beginning of find_rho, find_alpha, and find_beta, does a
484       check of the entire slice, if CPP-option
485       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
486    checkpoint46l_pre
487    
488    checkpoint46k_post
489    o fixed the verification/global_ocean.90x40x15 experiment:
490     - new bathymetry (the world according to A., JMC, and M.)
491     - new initial fields and forcing fields (*.bin files)
492     - new POLY3.COEFFS (for the next release one should switch to a full
493       equation of state: JMD95P or MDJWF)
494     - fixed several errors and redundancies in the data file
495     - experiment uses looped cells
496     - added matlab directory with diagnostic scripts for plotting of output
497    
498    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
499     - read AIM physics parameters from a file (data.aimphys)
500     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
501    
502    checkpoint46j_post
503    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
504    o move wVel computation at the end of the time step, in S/R integr_continuity
505    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
506    o update timeave pkg for wVel diagnostic.
507    checkpoint46j_pre
508    
509    checkpoint46i_post
510    o Clean up AIM package (and keep the results unchanged):
511      include CPP_OPTION and use IMPLICT NONE in all routines ;
512      declare all the variables _RL ; use _d 0 for all numerical constants.
513      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
514    
515    checkpoint46h_post
516    o cleaned up the use of rhoNil and rhoConst.
517      - rhoNil should only appear in the LINEAR equation of state, everywhere
518        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
519        and the dynamical equations are all divided by rhoConst
520    o introduced new parameter rhoConstFresh, a reference density of fresh
521      water, to remove the fresh water flux's dependence on rhoNil. The default
522      value is 999.8 kg/m^3
523    o cleanup up external_forcing.F and external_forcing_surf.F
524      - can now be used by both OCEANIC and OCEANICP
525    checkpoint46h_pre
526    
527     Added code to convert surface volume flux (fresh water) into
528     a mass flux when using P coordinates in the ocean (OCEANICP).
529     Note: It assumes you have set rho0=rhoConst=density of fresh water.
530    
531    checkpoint46g_post
532    o Include a new diagnostic variable phiHydLow for the ocean model
533      - in z-coordinates, it is the bottom pressure anomaly
534      - in p-coordinates, it is the sea surface elevation
535      - in both cases, these variable have global drift, reflecting the mass
536        drift in z-coordinates and the volume drift in p-coordinates
537      - included time averaging for phiHydLow, be aware of the drift!
538    o depth-dependent computation of Bo_surf for pressure coordinates
539      in the ocean (buoyancyRelation='OCEANICP')
540      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
541        Theta, Salinity, and Pressure in the parameter list. This routine is
542        presently contained in find_rho.F. This routine does not give the
543        correct density for 'POLY3', which would be a z-dependent reference
544        density.
545    o cleaned up find_rho
546      - removed obsolete 'eqn' from the parameter list.
547    o added two new verification experiments: gop and goz
548      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
549    checkpoint46g_pre
550    
551    checkpoint46f_post
552    o Enable tangent linear (forward mode) gradient checks:
553      - extended active file handling to g_... files
554      - added TANGENT_SIMULATION to theSimulationMode
555      - extended grdchk package accordingly
556    o added tangent linear setup in verification/carbon/code_ftl
557    o added adjoint setup in verification/front_relax/code_ad
558    
559    checkpoint46e_post
560    o Added new equation of state -> MDJWF
561      - EOS of McDougall et al., 2002, JAOT, submitted
562      - caveat: the equation of state is only valid for a smaller (more
563        realistic?) range of values than JMD95P/Z and UNESCO
564      - added masks to the calculation of pressure in store_pressure
565      - added more check values for density in check_eos (ini_eos.F), some of
566        the old check values are out of the range of the MDJWF-eos, so don't
567        expect perfect matches for those
568    checkpoint46e_pre
569    
570    checkpoint46d_post
571    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
572      'OCEANICP', also initialised field pressure correctly in ini_eos in the
573      case of pressure coordinates. eosType='JMD95Z' in
574      combination with buoyancyRelation='OCEANICP' now causes an error.
575    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
576      in find_alpha/beta.
577    checkpoint46d_pre
578    
579    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
580      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
581    
582    checkpoint46c_post
583    o Changes necessary for ocean in p-coordinates
584     -  Added new buoyancy relation = 'OCEANICP'
585     -  Added new parameters = gravitySign (this used to be contained inside
586        the factor dRdZ which I added when we first switched to R coordinates).
587     X GM/Redi is not compatible (yet)
588     X bottom drag and no-slip need to be debugged.
589    checkpoint46c_pre
590    
591    checkpoint46b_post
592    o Added new equation of state -> JMD95Z and JMD95P
593      - EOS of Jackett and McDougall, 1995, JAOT
594      - moved all EOS parameters into EOS.h
595      - new routines ini_eos.F, store_pressure.F
596    o Added UNESCO EOS, but not recommended because it requires
597      in-situ temperature (see JMD95)
598    o Modified formatting for knudsen2.f in utils/knudsen2 and added
599      unesco.f to be used with POLY3
600    checkpoint46b_pre
601    
602    checkpoint46a_post
603    o Added (atmospheric) pressure loading
604      - new field in FFIELDS.h, etc...
605      - new cpp flag ATMOSPHERIC_LOADING
606    o Changed hFacC to _hFacC in calc_phi_hyd.F
607    o Added SHORTWAVE_HEATING to some files for consistency
608    checkpoint46a_pre
609    
610    checkpoint46
611    further merges from release1_p5
612    o new ctrl package
613      - adopted from ECCO environment to enable optimization
614      - added Eliassen Palm fluxes to controls
615    o added Eliassen Palm flux controls to gradient check package
616    o cost package
617      - Compatible with new ctrl package
618      - added Eliassen Palm cost hooks
619      - modif's of existing cost functions
620    o Adjoint-related bug fixes in kpp:
621      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
622      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
623    o autodiff package
624      - flow directives:
625        + new for S/R do_the_model_io
626        + enhanced for S/R checkpoint
627        + new gmredi.flow
628      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
629        disable adcommon.h/g_common.h by default.
630      - fixed problem for adjoint of global_max
631    o modified verification/carbon/
632    o New setup for adjoint of global_ocean
633    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
634    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
635    o incorporated hooks for sponge layer code (external_forcing.F)
636    
637    checkpoint45d_post
638    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
639    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
640      (affects plume_on_slope "cg2d" output)
641    o add new parameter deltaTfreesurf for free-surface time stepping
642    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
643    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
644    o change phiMin in exp1 (to agree with documentation)
645    o add new flags:
646     - T,S forcing inside/outside Adams-Bashforth
647     - turn off temp,salt advection and/or forcing
648     - for each tracer, define internal flag for multiDimAdvection & A-B
649    o monitor: change definition of KE to check conservation of Energy
650    
651    checkpoint45c_post
652    o Removed f90 comments ("!")
653    o Modified initialisations to enable exf package for MITgcm
654      (without invoking ECCO_PACKAGE).
655    o modifications to gradient check package (Martin Losch)
656      - enable centered differences
657      - modified format of standard output
658    
659    checkpoint45b_post
660    o cleaned exchange calls in cg2d
661    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
662    o included CPP option SINGLE_LAYER_MODE in thermodynamics
663      to configure barotropic setup (Martin Losch)
664    o moved some initialisations within bi,bj loop in dynamics
665      (TAF flow dependency)
666    o in initialise_varia, moved call packages_init_variables
667      before convective_adjustment_init
668      (corresponding adjustment of TAF tape initialisation).
669    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
670    
671    checkpoint45a_post
672    o compute Rho over the whole domain (extend iMin,jMin indices)
673    o specific exchange for X-slice domain (case Ny=1)
674    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
675    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
676    
677    checkpoint44h_post = checkpoint45
678    o Fix to restore differentiability:
679      place at which packages_init_variables is called in
680      initialise_varia is crucial for reverse control flow.
681    o modifications in GMRedi to enable stable adjoint
682      (corresponding modif's in thermodynamics, dynamics)
683    o added missing hook for sponge layer code in external_forcing
684    o modified test cost functions
685    o storing in gad_advection (plus removal of write(0,*)!
686    o missing headers TR1.h added in convective_adjustment routines
687    o errorMessageUnit set non-equal zero in eeboot
688      (conflict on some platforms, e.g. IBM SP3)
689    o modified carbon verif.
690    
691    checkpoint44h_pre
692    o vertical grid option: allow to put the Interface at the middle between
693      2 cell-centers ; replace delZ in pkg/kpp by drF.
694    o GM Advective form: Tracers are advected using the residual transport (=
695      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
696    
697    checkpoint44g_post
698    o fix surface correction term in multiDimAdvection (affects plume_on_slope
699      results) ; ifdef missing in thermodynamics.F
700    
701    checkpoint44f_pre,checkpoint44f_post
702    o added PTRACERS package
703      This allows an arbitrary number of passive tracers to be integrated
704      forward simultaneously with the dynamicaly model.
705      + Implemented so far:
706        - basic forward algorithm (time-stepping, advection, diffusion, convection)
707        - I/O and checkpointing
708        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
709      + Not implemented so far:
710        - KPP
711        - OBCS
712      + No specific example supplied (yet) but global_ocean.90x40x15 has the
713        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
714        line in data.pkg.
715      + This package is disabled by default since it increases storage.
716    
717    
718    o testscript: added -cleanup option
719    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
720                 b) enable to filter 2D fields.
721    
722    checkpoint44e_pre,post
723    o re-wrote convective adjustment to use pre-calculated weights
724      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
725      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
726      Original calls to convect() still in place.
727    
728    chkpt44d_pre,post
729    o added missing EXCLUDE_MONITOR flags
730    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
731      (incompatible typ in MIN/MAX expressions caused problems
732      on IBM SP3)
733    o in genmake added variable MAKEDEPEND
734      plus resetting for case SunOS
735    o added timer_stats.c routine for IBM SP3
736    o removed variables in dynamics
737    !!! I forgot to create tag chkpt44d_pre !!!
738    !!! But chkpt44d_pre = chkpt44c_post    !!!
739    
740    o real fresh water flux implemented with non-linear free-surface.
741    
742    chkpt44c_pre,post
743    o few fix (mask in shap_s2, EmPmR in external_field_load,
744      USE_NATURAL_BCS in solve_for_P);
745    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
746    
747    checkpoint44b_pre/_post
748    o merge of relevant stuff from the ecco-branch:
749      - genmake: removed $S64 overwrite for case SunOS
750      - pkg/exf: update and corrections for field swapping and obcs
751      - pkg/ecco: parameter lists for the_model_main, the_main_loop
752                  harmonized between ECCO and MITgcm
753      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
754                      updated checkpointing_lev... lists for obcs
755      - model/src: minor changes in forward_step, plot_field
756                   added directive for divided adjoint in the_main_loop
757      - pkg/mdsio: added mdsio_gl_slice
758    
759    o check parameters & config (chkpt44a_pre,post)
760    o OBC and NonLin_FrSurf.
761    
762    checkpoint44
763    o fix bug in mom_vi_del2uv
764    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
765    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
766    o update AIM experiments (NCEP input files)
767    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
768    o added some stuff for AD
769    
770    checkpoint43
771    o added two new advection tests
772    o added global 4x4 degree ocean test
773    o added test of H&S94 with free surface on cube
774    o some final mods for gradient check, adjoint,...
775    
776    checkpoint42
777      Fixed AD-related problems:
778    o Store directives up-to-date with re-arranged Adams-Bashforth
779      (mainly thermodynamics.F)
780    o New store directives for multi-dim. advection schemes
781      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
782      * new common block and key passkey
783      (mainly gad_advection.F)
784    o Modified store directives for split of dynamics/thermodynamics
785      for the case ALLOW_KPP
786    o Cleaned argument list for timestep_tracer.F
787    
788    checkpoint41
789    o re-formatted/added comments in prologues of key subroutines
790      to work with protex
791    
792    checkpoint40
793    o moved calc_gs, calc_gt and calc_tr1 back to model/src
794    o added FLT (floats) package from Arne along with demo. experiment
795    o re-arranged Adams-Bashforth scheme for tracers to allow easier
796      implementation of forward-in-time forcing terms
797    o more mods for non-linear free-surface including new variable
798    o modified multi-dim method to work on cube
799    o bug fix in KPP (from DM)
800    
801    checkpoint40pre9
802    o added DST advection schemes
803    o fix MPI bug on SGI's
804    o modifications for non-linear free-surface
805    o fixed conditionals for fixed flow/passive tracer only mode
806    o added tension/strain form of stress tensor
807    o changes to commenting of arguments for TAF/TAMC
808    o added/updated many matlab scripts
809    o added multi-dimensional advection method for tracers
810      
811    checkpoint40pre8
812    o new package rw/
813      Added method for dumping intermediate local arrays:
814      mdsio_writetile - same as mdsio_writefield except works from inside
815                        bi,bj loop
816      mdsio_writelocal - same as mdsio_writetile except works for local
817                         arrays
818      write_local_r? - higher-level wrapper for mdsio_writelocal
819      Controlled by diagFreq. Defaults to zero (ie. no dumps)
820      Example given at end of mom_vecinv.F that dumps some local arrays.
821    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
822      control flux-form versus vector invariant code.
823      Switch is runtime flag vectorInvariantMomentum (defaults to false)
824      or genmake -DISABLE ...
825    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
826      (additional storing is now needed for case vecinv;
827      currently nothing implemented to switch this storing off
828      in case fluxform is used since no CPP flag available).
829    
830    checkpoint40pre7
831    o bug fix in dynamics.F
832      calc_viscosity called before k=1,Nr loop.
833    o added some #ifdef's ALLOW_PASSIVE_TRACER
834    o cleaned initialisations in ctrl_map_ini
835      related to TAF
836    
837    checkpoint40pre6
838    o split dynamics into thermodynamics & dynamics
839    o corresponding split of calc_diffusivity into
840      calc_diffusivity, calc_viscosity
841      (kpp_calc_diff, kpp_calc_visc).
842    o Added diffkr, kapgm to control variables
843    o bug fix in gmredi_slope_limit for ldd97
844    
845    checkpoint40pre5
846    o proper initialization of Adams-Bashforth time stepping
847      + uses forward step for very first step of model (iter=0)
848    o re-generated *all* output since almost all output is modified by this
849      change (sorry but we've been putting this one off for about 2 years)
850      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
851        *not* regenerated since they are already out of date and I don't
852        want to create the impression that they are suddenly working.
853    o removed KAP stuff for DEC's
854    o modified/added many .cvsignore files in */code and */input
855    o added new expt "solid-body.cs-32x32x1"
856      + this uses an alternative form of ini_curvilinear_grid.F which
857        is not necessarily any better than the current one...
858    
859    checkpoint40pre4
860    o added re-initialisations of utrans,vtrans,rtrans in
861      calc_common_factors which are crucial for TAF.
862    o extended iMin,jMin range for calc_common_factors,
863      calc_diffusivity
864    o added option ALLOW_PASSIVE_TRACER
865    o a few minor updates and fixes
866    
867    checkpoint40pre3
868    o created calc_gtr1.F for gad package
869    o split the_main_loop and re-introduced forward_step
870    o some recomputations of nIter0 for TAMC
871    
872    checkpoint40pre2
873    o Updated to latest branch of AJA, JMC
874    o Added gradient check package
875    o Added routines for passive tracer handling
876    o Added carbon sequestration sensitivity experiment
877    
878    checkpoint39
879     o Modifications and fixes to support TAMC
880       (mainly missing or wrong directives)
881     o Corrected common blocks when fooling TAMC to produce adjoint I/O
882       in addummy_in_stepping
883     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
884     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
885     o Included following packages:
886       cal: calendar
887       exf: external forcing
888       ecco: essential routines to control use of cal, exf
889             (NB: this is not the full ECCO environment)
890     o disabled some packages by default in genmake
891    
892    checkpoint38
893     o see notes_c37_adj.txt
894     o corrected wrong layer index in external_forcing_t
895     o replaced the_main_loop/forward_step by the_main_loop
896     o removed forceoutput from write_state
897       (replaced criteria for initial/final state)
898     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
899    
900    checkpoint37
901     o mdsio.F routine split and packaged in pkg/mdsio
902       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
903        used unless genmake -disable=mdsio)
904     o allow a more precise surface-geopotential gradient for the atmosphere
905       taking into account the change in space of Alpha (=1/rho) at the surface.
906     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
907       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
908     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
909       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
910       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
911     o Time-Average diagnostics defined as a pseudo package "timeave".
912     o pickup files : old pickup (before c35) did not work with new code (c35
913       and after) unless activating 2 commented lines in initialise-varia.
914     o Non-Hydrostatic pickup file Pb fixed.
915     o bug with Rigid-lid version (since c35) fixed.  
916    
917    checkpoint36
918     o implement Crank-Nickelson barotropic time-stepping
919     o recover Time-Average diagnostics
920     o fix Pb in checkpoint (PR#19)
921     o AIM become a standard package ; clean unused CPP_kees
922    
923    checkpoint35
924     o subtantial rewrite of dynamics.f
925     o allows staggered time-stepping
926     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
927     o added bottom drag (linear + quadratic)
928    
929    checkpoint34
930     o Modified exchange routines for correct reverse simulation.
931     o Added verification output to comply with bug fix in impldiff.F
932       as of c33 (exp2, natl_box).
933     o Corrected store directives in dynamics.F
934     o Corrected array boundaries in impldiff.F
935     o Corrected array dimensions in gmredi.
936       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
937     o Added routine GLOBAL_SUM_INT to global_sum.F
938     o Added mdsio_gl.F for ECCO purposes.
939    
940    checkpoint33
941     o Fixed bug in lower BC in impldiff.F
942     o Fixed confusion about units of forcing arrays in FFIELDS.h
943       namely Fu,Fv,Qnet,Qsw,EmPmR:
944       - Removed verification/natl_box/code/external_fields_scale.F
945         (did not differ from that in model/src)
946       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
947         (see FFIELDS.h for description)
948       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
949         kpp_calc.F and kpp_transport_t.F
950       - Removed model/src/external_fields_scale.F and calls to it
951       - verification/natl_box uses flux data with "atmospheric" sign so
952         a special version of external_fields_load.F is used to
953         change the data as it's read in. This way, the arrays
954         have the right units and signs at all times tha a user could
955         possibly use them.
956     o Corrected genmake to delete a temporary file during configuration
957    
958    checkpoint32
959     o Scaling of forcing fields moved from external_forcing.F to
960       external_fields_scale.F, called directly after loading fields.
961     o Surface relaxation terms added to surface tendency fields in
962       extra subroutine.
963     o impldiff.F changed to avoid storing by TAMC of huge intermediate
964       fields.
965     o Changes in GMRedi to comply with packaging structure.
966     o Modifications and bug fixes in KPP package.
967     o Verification experiment for KPP added (verification/nat_box/)
968    
969    checkpoint31
970     o Packages interface brought in line with defined standard
971       -> new routines packages_...F
972       -> changes in initialise_fixed.F, initialise_varia.F
973       -> enables initialisation interface for ECCO package
974     o Rescaling of external forcing fields immediately after read
975       (removed from external_forcing.F)
976       -> new: surface_fields_scale.F
977       -> affects ini_foorcing.F, external_fields_load.F
978     o Computation of surface tendencies before tendency updates.
979       -> new: external_forcing_surf.F
980     o Change of variable names useGMRedi, useKPP, useECCO
981     o Further changes in dynamics.F, impldiff.F for TAMC
982     o Tested for experiments 0, 2, 4.
983       - not yet tested for GMRedi.
984       - not yet tested for KPP.
985    
986    checkpoint30
987     o Updates for OBCs
988     o New experiment for test OBCs (internal_wave)
989     o New output.txt in verification/exp4/results/
990     o Updates for KPP: calculation of viscosity corrected, new variables
991       kpp_dumpFreq and kpp_taveFreq
992     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
993       and entry for T90 in genmake
994    
995    checkpoint29
996     o packaged KPP and GM/Redi
997    
998    checkpoint28
999     o Corrected initialization of hFacMin for difference vertical coordinates
1000     o Modified calculation of partial cell thickness to more robust algorithm
1001     o config_summary.F: replaced write_1D_... by write_0D_...
1002       read_write.F: added subroutines write_0D_...
1003     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1004       included some initialisations required for TAMC.
1005     o routine calc_isoslopes: modified sqrt computation to make it
1006       differentiable for zero argument.
1007     o routines dynamics, impldiff:
1008       included store directives and tape key computations required for TAMC.
1009     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1010    
1011    checkpoint27
1012     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1013       formulation works properly with variable resolution.
1014     o restructured the calling tree between the_model_main() and dynamics()
1015     o split initialise() into initialise_fixed() and initialise_varia()
1016     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1017       in new routine ini_psurf()
1018    
1019    checkpoint26
1020     o moved some #ifdef in optional routines to encompass everything
1021       except the argument declarations. This was using up some memory.
1022     o fixed macros like _ADT to work with both versions of Linux cpp
1023     o cleaned up some unused and uninitialized variables
1024       (helps when debugging with strict compile options)
1025     o split up CPP_EEOPTIONS.h into options and macros
1026       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1027     o patch for 2 processor JAM mode
1028    
1029    checkpoint25
1030     o updates for OBCs and NH
1031     o dramatically reduced memory usage
1032     o added "JAM" routines for use on Artic network
1033     o parameterization of convection by implicit vertical diffusion
1034     o added a diagnostic of convective index
1035     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1036       (this is was partly for OBCs and NH but also in anticipation of
1037        an explicit free-surface option)
1038     o initial state input files for U and V
1039    
1040    checkpoint24
1041     o Removed some spurious "REAL"s
1042     o Updated KPP to latest version from JPL
1043     o Added a COS(latitude) in horizontal viscosity
1044    
1045    checkpoint23
1046     o Added del^4 diffusion for salt and temperature
1047     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1048    
1049    checkpoint22
1050     o Made many small changes: implicit none, format(i5), etc...
1051     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1052    
1053    checkpoint21
1054     o Introduced new I/O package that supports direct-access records (mdsio.F)
1055     o Split-up mid-level I/O routines
1056     o Updated input data for experiments 0,1,2,4 and 5
1057     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1058    
1059    checkpoint20
1060     o Tidied up open-boundaries some more
1061     o Added non-hydrostatic code
1062     o Fixed some input data
1063     o Modified MPI start-up to work in "coupled" context.
1064    
1065    checkpoint19
1066     o Tidied up directory structure for verification experiments.
1067     o Added new code for open boundaries.
1068     o Corrected advective terms near boundaries.
1069     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1070     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1071     o Split default parameters out of ini_parms.F into set_defaults.F.
1072    
1073    checkpoint18
1074     o Further changes for optional code generation with
1075       CPP - ugh!
1076    
1077    checkpoint17
1078     o Beginning to incorporating modularity
1079       for supporting atmos. and ocean configs.
1080     o Small changes for TAMC complinace
1081     o New ultra simple test case. Barotropic box
1082       configuration "exp0".
1083    
1084    checkpoint16
1085     o Minor changes to exchange routines to support
1086       accumulation in reverse mode. Adjoint of an
1087       assignment is an addition.
1088     o Changes to support compilation by TAMC (LR(1)
1089       syntax) and by g77 under Linux ( 72 character
1090       limit ).
1091    
1092    checkpoint15
1093     Rewrote exchange routines to allow
1094     o General tile <-> tile connectivity.
1095     o TAMC reverse mode flag ( is this really needed? )
1096     o Variable width overlap and exchange region widths.
1097     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1098       shmput/shmget, VIA, SYSV shmem and every other cool
1099       communication method.
1100    
1101    checkpoint14
1102     Consistent isomorphism chages made. These allow dynamical core
1103     to support both pressure and meters as a vertical coordinate.
1104    
1105    checkpoint13
1106     Release which corrects global_max problem and a couple
1107     of KGM time-averaging diagnostic errors. Also contains
1108     a double-gyre experiment setup as well as the baseline
1109     4 degree global template. The double gyre template is
1110     organised to allow it to be applied automatically to
1111     the baseline configuration.
1112    
1113    branch-point-rdot
1114     A few tidy-ups have been made bt the real point of this
1115     check-point (excuse the pun) is to allow a branch to be
1116     made for the purposes of adding the rDot alterations.
1117     I don't want to commit the rDot to the main-trunk until
1118     we've actually tested it...
1119    
1120    checkpoint12
1121     Tidy up and added generic genmake script (formerly
1122     configure script).
1123     Released to testers.
1124    
1125    checkpoint11
1126     Re-arranged initialise() and introduced ini_vertical_grid()
1127     and ini_masks_etc().
1128    
1129  checkpoint10  checkpoint10
1130   Introduced the configure script.   Introduced the configure script.
1131   Separated out the diags package.   Separated out the diags package.

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