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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.156 by adcroft, Thu May 15 16:15:57 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 added missing .cvsignores and made uniform across expts
7     o changed configuration of tidal_basin_2d expt
8     o added pkg/debug functions for tracing code in fatal crashes
9     o tidied pkg/monitor to use MONITOR_OPTIONS.h
10     o new fn in pkg/monitor to stop model if solution grows too big
11     o removed lots of single quotes from comments
12     o fixed gather/scatter inital MPI dialogue in ini_procs.F
13    
14    checkpoint50e_post
15    o make KPP work with PTRACERS
16     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
17       nearly a copy of kpp_transport_s
18     - there is no analogue to SurfaceTendencyS, so I have to use
19       gPtr(of the surface layer) instead
20    o add a new platform SunFire+mpi (SunFire 15000) to genmake
21    checkpoint50e_pre
22    
23    checkpoint50d_post
24    o change kpp output from multiple-record state files to single-record state
25      files analogous to write_state.F
26    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
27      analogous to the cg2d-related output.
28    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
29      so that writing to internal file fn (with length 512) fails.
30    checkpoint50d_pre
31    
32    checkpoint50c_post
33    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
34    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
35    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
36    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
37    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
38    
39    checkpoint50c_pre
40    Merging from release1_p13:
41    o bug fix for pkg/seaice dynamic solver
42    o Added SEAICE_initialHEFF to pkg/seaice
43    
44    checkpoint50b_post
45    o store u*,v* in gU,V instead of in guNm1,gvNm1
46    o in order to put the momForcing out of the Adams-Bashforth:
47      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
48      to timestep.F
49    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
50    o re-generate output for highly sensitive test-exp:
51       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
52    
53    checkpoint50b_pre
54    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
55    o corrected CPP option mismatch in exf_Bulk... functions for case
56      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
57    
58    checkpoint50a_post
59    o Bug fix for merging between c50 and KPP.
60      ikey was passed from thermodynamics to kpp_calc via
61      common block rather than being recomputed in kpp_calc,
62      in contradiction with new key itdkey.
63      New key ikppkey created, and tamc.h headers updated.
64    
65    checkpoint50
66    - 2nd step of merge with ecco-branch:
67      merge changes in ecco-branch back into main trunk
68    - bug fix in find_alpha
69    - more storing in gmredi_calc_tensor.F, kpp_routines.F
70    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
71    - merged some sliced AD support routines
72    
73    checkpoint49
74    merged from ecco-branch:
75    o exf:
76      - Enable initialisation of forcing fields to constant
77        (runtime) values.
78      - in exf_getffields.F
79        Reduce i-/j-loop to interior domain, discarding overlaps.
80        That also fixes wrong TAF-key computations for key_1, key_2
81        with bulf formulae.
82      - exf_init.F modify #ifdef for exf_init_evap
83      - exf_getffieldrec.F, ctrl_getrec.F
84        The following INT-usages are not safe:
85          fldsecs  = int(fldsecs/fldperiod)*fldperiod
86          fldcount = int(fldsecs/fldperiod) + 1
87        and were modified.
88    o autodiff: checkpoint_lev...
89      - updated storing for bulk formulae (some arrays were missing)
90      - added state for seaice package
91      - synchronized with main branch
92    o DIVA:
93      Modif.s in
94      - the_main_loop.F
95      - the_model_main.F
96      and added cost_final_restore.F cost_final_store.F
97      o With these changes, it is possible to fully separate
98        the first forward run to compute the cost function (mdthe_main_loop)
99        and adjoint runs over individual DIVA intervals (adthe_main_loop)
100        into separate model executions.
101        This enables better tuning of DIVA to given queue sizes.
102      o Loss of cost function value in consecutive DIVA runs is
103        fixed by storing to 'costfinal' file.
104      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
105        beginning/end of adjoint integration is accounted for.
106      The current changes apply to TAF-1.4.26.
107      TAF has one remaining bug, requiring one manual change
108      (see MITgcm manual).
109    o cal: synchronized between MAIN and ecco-branch
110    
111    checkpoint48i_post
112    o Changes to restore differentiability of code w.r.t. previous tag
113      (mostly adding new routines to make list and replacing
114      pressure by totPhiHyd).
115    o Updated and merged grdchk package
116      - has both ADM and TLM checks
117      - works for single- and multi-proc.
118      - output cleaned
119      - worked successfully for parallel DIVA
120    o genmake:
121      - Adding -platform=SP4
122      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
123    o Modif. for DIVA:
124      ctrl_unpack should not be called in intermediate DIVA interval.
125      (similar thing would apply for active files such as
126      tbar, sbar, psbar, which should not be reinitialised;
127      only relevant for ecco-branch)
128    
129    checkpoint48h_post
130    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
131    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
132    o Added SEAICE_initialHEFF to pkg/seaice
133    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
134    
135    checkpoint48g_post
136    --- EOS:
137    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
138      store total Potential in totPhyHyd for diagnostics & EOS.
139    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
140    --- Pressure/geopotential gradient:
141    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
142    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
143      ( changes results of global_ocean_pressure )
144    o NLFS + z-coord.: add eta*Rho' contribution.
145    o accurate phiHyd when using interface-W at the middle between 2 centers
146     ( changes results of ideal_2D_oce )
147    o includes r* 2nd term in potential gradient.
148    
149    checkpoint48f_post
150    Merging from release1_p12:
151    o Modifications for using pkg/exf with pkg/seaice
152      - improved description of the various forcing configurations
153      - added basic radiation bulk formulae to pkg/exf
154      - units/sign fix for evap computation in exf_getffields.F
155      - updated verification/global_with_exf/results/output.txt
156    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
157      (SBO) core products, including oceanic mass, center-of-mass,
158      angular, and bottom pressure (see pkg/sbo/README.sbo).
159    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
160      to avoid negative values in shallow regions.
161      - updated verification/natl_box/results/output.txt
162      - updated verification/lab_sea/results/output.txt
163    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
164    o Added useSingleCpuIO option (see PARAMS.h).
165    o Updated useSingleCpuIO option in mdsio_writefield.F to
166      work with multi-field files, e.g., for single-file pickup.
167    o pkg/seaice:
168      - bug fix in growth.F: QNET for no shortwave case
169      - added HeffFile for specifying initial sea-ice thickness
170      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
171    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
172      kpp_transport_t.F, forward_step.F, and the_main_loop.F
173    o pkg/seaice:
174      - adjoint-friendly modifications
175      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
176    
177    checkpoint48e_post
178    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
179    o dynamics: change definition of computational domain & adapt mom_fluxform
180      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
181    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
182        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
183        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
184        global_ocean.90x40x15 global_with_exf global_ocean_pressure
185        inverted_barometer solid-body.cs-32x32x1
186      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
187    
188    checkpoint48d_post
189    o in preparation for r*:
190     a) use pre-computed gradient of hydrostatic potential:
191        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
192     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
193        => affects results of glob_oce_pressure (different truncation error)  
194      update output.txt of ideal_2D_oce & global_ocean_pressure
195    
196    checkpoint48d_pre
197    o in preparation for r*:
198      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
199      pass the 2 comp. of the grad. as arguments to momentum S/R.
200      but for the moment, only used if it does not change the results.
201    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
202    
203    checkpoint48c_post
204    Modifications in treatment of initial flux forcing controls
205    to avoid extra storing of flux fields.
206    
207    checkpoint48c_pre
208    o Added tidal_basin_2d experiment (currently 1D!)
209    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
210    
211    checkpoint48b_post
212    o r* coordinate added in #ifdef NONLIN_FRSURF block.
213     (modification to pressure gradient not yet implemented)
214    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
215      (for U & V) that are used for vertical advection of momentum.
216    
217    checkpoint48a_post
218    o In preparation for r*, use temp. array to compute vertical transport
219       in flux-form momentum pkg. => change results of few test-exp.
220      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
221                        lab_sea, natl_box & plume_on_slope
222    
223    checkpoint48
224    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
225    
226    checkpoint47j_post
227    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
228    o moved adexch from forward_step to addummy_in_stepping
229    o added exch in ctrl_map_...
230    o aveFreq.=0. at end of cost_final to avoid overwrite in
231      reverse checkpointing loop
232    o Yet more changes in gmredi:
233      * adgmredi_calc_tensor
234        avoiding all recomputation of gmredi_slope_limit
235      * adgmredi_x/y/rtransport
236        added flag for excessive storing to avoid recomp. of
237        u/v/rtans, dTdx/y/z
238        -> this is not really necessary and very memory-consuming
239      * adgmredi_slope_psi:
240        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
241      * gmredi_slope_limit
242        re-activated full calculation of taperfct for case 'ac02'
243    o updating verification/ adjoints of carbon, global_ocean.90x40x15
244    
245    checkpoint47i_post
246    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
247    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
248      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
249    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
250    o gmredi: fix few bugs.
251    
252    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
253    This will be a good checkpoint to plug into the ecco-branch.
254    o few modif.'s to get latest version adjointed
255      (mainly kick out code in ini_linear_phisurf)
256    o modif's to run adjoint with exactConserv
257    o case GM_BOLUS_ADVEC should be cleaned
258      S/R gmredi_slope_psi should be cleaned
259    o verification/carbon now has exactConserv=.TRUE.
260    
261    checkpoint47g_post
262    o time-average AIM output: becomes independent from statvars time-average
263      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
264    o After TAF bug fix:
265      Tested adjoint of gmredi package.
266      Tests were done with checkpoint47 rather than with latest
267      checkpoint47f_post since the latter is broken for the adjoint
268      verification/carbon/ contains both ADM and TLM gradient checks.
269    Here they are, before they get changed/lost/stolen.
270    Mostly modif.'s to fix numerical sensitivities.
271    Gradient checks OK for
272    - GM_taper_scheme:
273      * clipping
274      * ac02
275      * linear
276      * glw91
277      * dm95
278      * ldd97
279    - GMREDI_OPTIONS:
280      * GM_VISBECK_VARIABLE_K
281      * GM_NON_UNITY_DIAGONAL
282      * GM_EXTRA_DIAGONAL
283      * GM_BOLUS_ADVEC
284    in conjunction with data.gmredi parameters to be checked in
285    in a few minutes under verification/carbon/code/
286    
287    checkpoint47f_post
288    Merging from release1_p10:
289    o modifications for using pkg/exf with pkg/seaice
290      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
291        and SEAICE_EXTERNAL_FLUXES
292      - pkg/exf CPP options EXF_READ_EVAP and
293        EXF_NO_BULK_COMPUTATIONS
294      - usage examples are Experiments 8 and 9 in
295        verification/lab_sea/README
296      - verification/lab_sea default experiment now uses
297        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
298    
299    checkpoint47e_post
300    o created a tag prior to creating a branch
301    
302    checkpoint47d_post
303    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
304      at the bottom boundary had an erroneous half slip boundary condition
305    o added bottom drag and no slip boundary condition capabilities to
306      oceanic pressure coordinates code
307    o added new verification experiment global_ocean_pressure, this experiment is
308      also described in the tutorial section of the manual
309    checkpoint47d_pre
310    
311    checkpoint47c_post
312    o Added a verification experiment for a global cubed-sphere ocean run
313      -  verification/global_ocean.cubed32x32x30
314      -  uses pkg/therm_seaice and pkg/bulk_forcing
315    
316    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
317    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
318      when using P-coordinate; only implemented for atmospheric config.
319    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
320      NOTES: requires option NONLIN_FRSURF to be "#define".
321    o update advect_xz/results/output.txt (left from checkpoint44g_post)
322    
323    checkpoint47b_post
324    Merging from release1_p9:
325    o pkg/seaice
326      - removed GOTO's and added taf directives
327      - double precision constants to reduce the g77 (Linux)
328        to F77 (SGI) differences reported in release1_p8
329    o tools/genmake
330      - added SGI options
331    o verification/testscript
332      - updated to that of checkpoint47a_post
333    o verification/global_ocean.90x40x15/input/eedata
334      - modified for SGI f77 compatibility
335    o verification/lab_sea
336      - added description of sea-ice model
337      - added missing matlab routines
338      - added test of thermodynamics parallelization
339    
340    checkpoint47a_post
341    o new pkg: aim_v23
342     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
343       for now, keep the same surface forcing as before.
344     - Part-Cell implemented into AIM; check that Heat & Water are conserved
345     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
346     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
347    o add diagnostic of surface correction term in monitor output
348    
349    o bulk_force and therm_seaice
350    - Two packages:  bulk_force (Bulk forcing)
351      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
352    - Earlier integration from Stephaine Dutkiewicz
353      and Patrick Heimbach.
354    - Two ifdef statements for compile time,
355       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
356    
357    checkpoint47
358    differentiable version of checkpoint46n_post
359    o bug fix in quasihydrostaticterms
360    o * "clean" adjoint code (in terms of extensive recomputations)
361        can now be obtained for all GMREDI options (i.e. for
362        - GM_VISBECK_VARIABLE_K
363        - GM_NON_UNITY_DIAGONAL
364        - GM_EXTRA_DIAGONAL
365        - GM_BOLUS_ADVEC )
366      * However, wrong gradient check problem remains unsolved.
367      * New CPP options have been introduced for different
368        tapering schemes
369    o external_fields_load now part of differentiation list
370    o pressure needs multiple storing;
371      would be nice to have store_pressure at beginning or
372      end of forward_step, e.g. by having phiHyd global (5-dim.)
373      (NB: pressure is needed for certain cases in find_rho,
374      which is also invoked through convective_adjustment).
375    o recomputations in find_rho for cases
376     'JMD95'/'UNESCO' or 'MDJWF' are OK.
377    o #define ATMOSPHERIC_LOADING should be differentiable
378    o ini_forcing shifted to begining of initialise_varia
379    o Incorporating QNVS line search routines into MITgcm
380      (this is separate code, and therefore not under pkg)
381      lsopt/, optim/
382    o Updated verification/carbon/
383      - #define GM_VISBECK_VARIABLE_K
384      - GM_taper_scheme    = 'ldd97'    
385    
386    checkpoint46n_post
387    Merging from release1_p8:
388    o verification/natl_box:
389      updating new external_fields_load routine
390    o New package: pkg/seaice
391      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
392      The sea-ice code is based on Hibler (1979-1980).
393      Two sea-ice dynamic solvers, ADI and LSR, are included.
394      In addition to computing prognostic sea-ice variables and diagnosing
395      the forcing/external data fields that drive the ocean model,
396      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
397      The implied surface heat flux is then stored in variable
398      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
399      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
400      non-local transport term.  Because this call precedes model
401      thermodynamics, temperature under sea-ice may not be "exactly" at
402      the freezing point by the time theta is dumped or time-averaged.
403      N.B.: fairly large differences in accuracy occur across
404            different platforms/compilers; comparison between
405            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
406            generated output gives:
407       T           S           U           V
408      C D M    c        m  s        m  s        m  s        m  s
409      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
410      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
411      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
412    
413      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
414    o GAD:
415      - generated new common blocks to account for call of
416        same gad routines with differing traceridentities
417        (needed to modify tracerIdentity indices in GAD.h)
418      - generated separate common blocks for case useCubedSphereExchange
419        (Department of Futurology)
420      - parameter lists to gmredi_?transport: added tracerIdentity
421      - added new key indices to tamc.h
422    o external_fields_load:
423      - added this routine to TAF list
424      - needed to make some common blocks global and additional storing
425        along the same lines as exf package (checkpoint_lev?_directives.h)
426    o exf:
427      updated external forcing package
428      - bug fixes carried over from ecco-branch
429        (missing OBCS_OPTIONS.h in two routines)
430      - enable easy to use "no forcing".
431      - added exf I/O for atmospheric loading
432      - added exf I/O for runoff data
433      - transfered scaling between exf <-> MITgcm to exf namelist
434    o Adding new verification experiment global_with_exf.
435      This verification experiment is almost identical to the
436      global_ocean.90x40x15 experiment, except that it uses
437      the exf (and cal) package instead of the
438      external_fields_load routine (cf README file).
439    
440    checkpoint46m_post
441    o modified testscript to return -- when there are no lines of "%MON" output
442    o added new flag "quasiHydrostatic" for QH mode
443      and new routine quasihydrostaticterms()
444    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
445      New routine: mom_u_coriolis_nh()
446    o fixed sign of non-hydrostatic metric terms in u and v equations.
447      Depend on correct sign of gravitySign.
448    o added work.pc* to .cvsignore in aim directories using ifc
449    o introduced flag for controllin non-hydrostatic metric terms
450    o removed gravitySign from PARM04
451    o switched to g77/ifc from pgf77 in aim experiments
452    
453    checkpoint46l_post
454    o made convective adjustment work with pressure coordinates:
455     - changed the direction of k-loop in convective_adjustment.F for the
456       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
457     - adjusted the reference pressure k-index in convective_adjustment.F
458     - adjusted the convection condition in convect.F (in analogy to
459       calc_ivdc.F)
460     - convective_adjustment no longer computes anything on the halos
461     - removed the warnings about negative salinity from find_rho.F and
462       find_alpha.F; instead the new routine look_for_neg_salinity, called
463       at the beginning of find_rho, find_alpha, and find_beta, does a
464       check of the entire slice, if CPP-option
465       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
466    checkpoint46l_pre
467    
468    checkpoint46k_post
469    o fixed the verification/global_ocean.90x40x15 experiment:
470     - new bathymetry (the world according to A., JMC, and M.)
471     - new initial fields and forcing fields (*.bin files)
472     - new POLY3.COEFFS (for the next release one should switch to a full
473       equation of state: JMD95P or MDJWF)
474     - fixed several errors and redundancies in the data file
475     - experiment uses looped cells
476     - added matlab directory with diagnostic scripts for plotting of output
477    
478    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
479     - read AIM physics parameters from a file (data.aimphys)
480     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
481    
482    checkpoint46j_post
483    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
484    o move wVel computation at the end of the time step, in S/R integr_continuity
485    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
486    o update timeave pkg for wVel diagnostic.
487    checkpoint46j_pre
488    
489    checkpoint46i_post
490    o Clean up AIM package (and keep the results unchanged):
491      include CPP_OPTION and use IMPLICT NONE in all routines ;
492      declare all the variables _RL ; use _d 0 for all numerical constants.
493      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
494    
495    checkpoint46h_post
496    o cleaned up the use of rhoNil and rhoConst.
497      - rhoNil should only appear in the LINEAR equation of state, everywhere
498        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
499        and the dynamical equations are all divided by rhoConst
500    o introduced new parameter rhoConstFresh, a reference density of fresh
501      water, to remove the fresh water flux's dependence on rhoNil. The default
502      value is 999.8 kg/m^3
503    o cleanup up external_forcing.F and external_forcing_surf.F
504      - can now be used by both OCEANIC and OCEANICP
505    checkpoint46h_pre
506    
507     Added code to convert surface volume flux (fresh water) into
508     a mass flux when using P coordinates in the ocean (OCEANICP).
509     Note: It assumes you have set rho0=rhoConst=density of fresh water.
510    
511    checkpoint46g_post
512    o Include a new diagnostic variable phiHydLow for the ocean model
513      - in z-coordinates, it is the bottom pressure anomaly
514      - in p-coordinates, it is the sea surface elevation
515      - in both cases, these variable have global drift, reflecting the mass
516        drift in z-coordinates and the volume drift in p-coordinates
517      - included time averaging for phiHydLow, be aware of the drift!
518    o depth-dependent computation of Bo_surf for pressure coordinates
519      in the ocean (buoyancyRelation='OCEANICP')
520      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
521        Theta, Salinity, and Pressure in the parameter list. This routine is
522        presently contained in find_rho.F. This routine does not give the
523        correct density for 'POLY3', which would be a z-dependent reference
524        density.
525    o cleaned up find_rho
526      - removed obsolete 'eqn' from the parameter list.
527    o added two new verification experiments: gop and goz
528      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
529    checkpoint46g_pre
530    
531    checkpoint46f_post
532    o Enable tangent linear (forward mode) gradient checks:
533      - extended active file handling to g_... files
534      - added TANGENT_SIMULATION to theSimulationMode
535      - extended grdchk package accordingly
536    o added tangent linear setup in verification/carbon/code_ftl
537    o added adjoint setup in verification/front_relax/code_ad
538    
539    checkpoint46e_post
540    o Added new equation of state -> MDJWF
541      - EOS of McDougall et al., 2002, JAOT, submitted
542      - caveat: the equation of state is only valid for a smaller (more
543        realistic?) range of values than JMD95P/Z and UNESCO
544      - added masks to the calculation of pressure in store_pressure
545      - added more check values for density in check_eos (ini_eos.F), some of
546        the old check values are out of the range of the MDJWF-eos, so don't
547        expect perfect matches for those
548    checkpoint46e_pre
549    
550    checkpoint46d_post
551    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
552      'OCEANICP', also initialised field pressure correctly in ini_eos in the
553      case of pressure coordinates. eosType='JMD95Z' in
554      combination with buoyancyRelation='OCEANICP' now causes an error.
555    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
556      in find_alpha/beta.
557    checkpoint46d_pre
558    
559    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
560      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
561    
562    checkpoint46c_post
563    o Changes necessary for ocean in p-coordinates
564     -  Added new buoyancy relation = 'OCEANICP'
565     -  Added new parameters = gravitySign (this used to be contained inside
566        the factor dRdZ which I added when we first switched to R coordinates).
567     X GM/Redi is not compatible (yet)
568     X bottom drag and no-slip need to be debugged.
569    checkpoint46c_pre
570    
571    checkpoint46b_post
572    o Added new equation of state -> JMD95Z and JMD95P
573      - EOS of Jackett and McDougall, 1995, JAOT
574      - moved all EOS parameters into EOS.h
575      - new routines ini_eos.F, store_pressure.F
576    o Added UNESCO EOS, but not recommended because it requires
577      in-situ temperature (see JMD95)
578    o Modified formatting for knudsen2.f in utils/knudsen2 and added
579      unesco.f to be used with POLY3
580    checkpoint46b_pre
581    
582    checkpoint46a_post
583    o Added (atmospheric) pressure loading
584      - new field in FFIELDS.h, etc...
585      - new cpp flag ATMOSPHERIC_LOADING
586    o Changed hFacC to _hFacC in calc_phi_hyd.F
587    o Added SHORTWAVE_HEATING to some files for consistency
588    checkpoint46a_pre
589    
590    checkpoint46
591    further merges from release1_p5
592    o new ctrl package
593      - adopted from ECCO environment to enable optimization
594      - added Eliassen Palm fluxes to controls
595    o added Eliassen Palm flux controls to gradient check package
596    o cost package
597      - Compatible with new ctrl package
598      - added Eliassen Palm cost hooks
599      - modif's of existing cost functions
600    o Adjoint-related bug fixes in kpp:
601      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
602      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
603    o autodiff package
604      - flow directives:
605        + new for S/R do_the_model_io
606        + enhanced for S/R checkpoint
607        + new gmredi.flow
608      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
609        disable adcommon.h/g_common.h by default.
610      - fixed problem for adjoint of global_max
611    o modified verification/carbon/
612    o New setup for adjoint of global_ocean
613    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
614    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
615    o incorporated hooks for sponge layer code (external_forcing.F)
616    
617    checkpoint45d_post
618    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
619    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
620      (affects plume_on_slope "cg2d" output)
621    o add new parameter deltaTfreesurf for free-surface time stepping
622    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
623    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
624    o change phiMin in exp1 (to agree with documentation)
625    o add new flags:
626     - T,S forcing inside/outside Adams-Bashforth
627     - turn off temp,salt advection and/or forcing
628     - for each tracer, define internal flag for multiDimAdvection & A-B
629    o monitor: change definition of KE to check conservation of Energy
630    
631    checkpoint45c_post
632    o Removed f90 comments ("!")
633    o Modified initialisations to enable exf package for MITgcm
634      (without invoking ECCO_PACKAGE).
635    o modifications to gradient check package (Martin Losch)
636      - enable centered differences
637      - modified format of standard output
638    
639    checkpoint45b_post
640    o cleaned exchange calls in cg2d
641    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
642    o included CPP option SINGLE_LAYER_MODE in thermodynamics
643      to configure barotropic setup (Martin Losch)
644    o moved some initialisations within bi,bj loop in dynamics
645      (TAF flow dependency)
646    o in initialise_varia, moved call packages_init_variables
647      before convective_adjustment_init
648      (corresponding adjustment of TAF tape initialisation).
649    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
650    
651    checkpoint45a_post
652    o compute Rho over the whole domain (extend iMin,jMin indices)
653    o specific exchange for X-slice domain (case Ny=1)
654    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
655    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
656    
657    checkpoint44h_post = checkpoint45
658    o Fix to restore differentiability:
659      place at which packages_init_variables is called in
660      initialise_varia is crucial for reverse control flow.
661    o modifications in GMRedi to enable stable adjoint
662      (corresponding modif's in thermodynamics, dynamics)
663    o added missing hook for sponge layer code in external_forcing
664    o modified test cost functions
665    o storing in gad_advection (plus removal of write(0,*)!
666    o missing headers TR1.h added in convective_adjustment routines
667    o errorMessageUnit set non-equal zero in eeboot
668      (conflict on some platforms, e.g. IBM SP3)
669    o modified carbon verif.
670    
671    checkpoint44h_pre
672    o vertical grid option: allow to put the Interface at the middle between
673      2 cell-centers ; replace delZ in pkg/kpp by drF.
674    o GM Advective form: Tracers are advected using the residual transport (=
675      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
676    
677    checkpoint44g_post
678    o fix surface correction term in multiDimAdvection (affects plume_on_slope
679      results) ; ifdef missing in thermodynamics.F
680    
681    checkpoint44f_pre,checkpoint44f_post
682    o added PTRACERS package
683      This allows an arbitrary number of passive tracers to be integrated
684      forward simultaneously with the dynamicaly model.
685      + Implemented so far:
686        - basic forward algorithm (time-stepping, advection, diffusion, convection)
687        - I/O and checkpointing
688        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
689      + Not implemented so far:
690        - KPP
691        - OBCS
692      + No specific example supplied (yet) but global_ocean.90x40x15 has the
693        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
694        line in data.pkg.
695      + This package is disabled by default since it increases storage.
696    
697    
698    o testscript: added -cleanup option
699    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
700                 b) enable to filter 2D fields.
701    
702    checkpoint44e_pre,post
703    o re-wrote convective adjustment to use pre-calculated weights
704      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
705      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
706      Original calls to convect() still in place.
707    
708    chkpt44d_pre,post
709    o added missing EXCLUDE_MONITOR flags
710    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
711      (incompatible typ in MIN/MAX expressions caused problems
712      on IBM SP3)
713    o in genmake added variable MAKEDEPEND
714      plus resetting for case SunOS
715    o added timer_stats.c routine for IBM SP3
716    o removed variables in dynamics
717    !!! I forgot to create tag chkpt44d_pre !!!
718    !!! But chkpt44d_pre = chkpt44c_post    !!!
719    
720    o real fresh water flux implemented with non-linear free-surface.
721    
722    chkpt44c_pre,post
723    o few fix (mask in shap_s2, EmPmR in external_field_load,
724      USE_NATURAL_BCS in solve_for_P);
725    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
726    
727    checkpoint44b_pre/_post
728    o merge of relevant stuff from the ecco-branch:
729      - genmake: removed $S64 overwrite for case SunOS
730      - pkg/exf: update and corrections for field swapping and obcs
731      - pkg/ecco: parameter lists for the_model_main, the_main_loop
732                  harmonized between ECCO and MITgcm
733      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
734                      updated checkpointing_lev... lists for obcs
735      - model/src: minor changes in forward_step, plot_field
736                   added directive for divided adjoint in the_main_loop
737      - pkg/mdsio: added mdsio_gl_slice
738    
739    o check parameters & config (chkpt44a_pre,post)
740    o OBC and NonLin_FrSurf.
741    
742    checkpoint44
743    o fix bug in mom_vi_del2uv
744    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
745    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
746    o update AIM experiments (NCEP input files)
747    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
748    o added some stuff for AD
749    
750    checkpoint43
751    o added two new advection tests
752    o added global 4x4 degree ocean test
753    o added test of H&S94 with free surface on cube
754    o some final mods for gradient check, adjoint,...
755    
756    checkpoint42
757      Fixed AD-related problems:
758    o Store directives up-to-date with re-arranged Adams-Bashforth
759      (mainly thermodynamics.F)
760    o New store directives for multi-dim. advection schemes
761      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
762      * new common block and key passkey
763      (mainly gad_advection.F)
764    o Modified store directives for split of dynamics/thermodynamics
765      for the case ALLOW_KPP
766    o Cleaned argument list for timestep_tracer.F
767    
768    checkpoint41
769    o re-formatted/added comments in prologues of key subroutines
770      to work with protex
771    
772    checkpoint40
773    o moved calc_gs, calc_gt and calc_tr1 back to model/src
774    o added FLT (floats) package from Arne along with demo. experiment
775    o re-arranged Adams-Bashforth scheme for tracers to allow easier
776      implementation of forward-in-time forcing terms
777    o more mods for non-linear free-surface including new variable
778    o modified multi-dim method to work on cube
779    o bug fix in KPP (from DM)
780    
781    checkpoint40pre9
782    o added DST advection schemes
783    o fix MPI bug on SGI's
784    o modifications for non-linear free-surface
785    o fixed conditionals for fixed flow/passive tracer only mode
786    o added tension/strain form of stress tensor
787    o changes to commenting of arguments for TAF/TAMC
788    o added/updated many matlab scripts
789    o added multi-dimensional advection method for tracers
790      
791    checkpoint40pre8
792    o new package rw/
793      Added method for dumping intermediate local arrays:
794      mdsio_writetile - same as mdsio_writefield except works from inside
795                        bi,bj loop
796      mdsio_writelocal - same as mdsio_writetile except works for local
797                         arrays
798      write_local_r? - higher-level wrapper for mdsio_writelocal
799      Controlled by diagFreq. Defaults to zero (ie. no dumps)
800      Example given at end of mom_vecinv.F that dumps some local arrays.
801    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
802      control flux-form versus vector invariant code.
803      Switch is runtime flag vectorInvariantMomentum (defaults to false)
804      or genmake -DISABLE ...
805    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
806      (additional storing is now needed for case vecinv;
807      currently nothing implemented to switch this storing off
808      in case fluxform is used since no CPP flag available).
809    
810    checkpoint40pre7
811    o bug fix in dynamics.F
812      calc_viscosity called before k=1,Nr loop.
813    o added some #ifdef's ALLOW_PASSIVE_TRACER
814    o cleaned initialisations in ctrl_map_ini
815      related to TAF
816    
817    checkpoint40pre6
818    o split dynamics into thermodynamics & dynamics
819    o corresponding split of calc_diffusivity into
820      calc_diffusivity, calc_viscosity
821      (kpp_calc_diff, kpp_calc_visc).
822    o Added diffkr, kapgm to control variables
823    o bug fix in gmredi_slope_limit for ldd97
824    
825    checkpoint40pre5
826    o proper initialization of Adams-Bashforth time stepping
827      + uses forward step for very first step of model (iter=0)
828    o re-generated *all* output since almost all output is modified by this
829      change (sorry but we've been putting this one off for about 2 years)
830      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
831        *not* regenerated since they are already out of date and I don't
832        want to create the impression that they are suddenly working.
833    o removed KAP stuff for DEC's
834    o modified/added many .cvsignore files in */code and */input
835    o added new expt "solid-body.cs-32x32x1"
836      + this uses an alternative form of ini_curvilinear_grid.F which
837        is not necessarily any better than the current one...
838    
839    checkpoint40pre4
840    o added re-initialisations of utrans,vtrans,rtrans in
841      calc_common_factors which are crucial for TAF.
842    o extended iMin,jMin range for calc_common_factors,
843      calc_diffusivity
844    o added option ALLOW_PASSIVE_TRACER
845    o a few minor updates and fixes
846    
847    checkpoint40pre3
848    o created calc_gtr1.F for gad package
849    o split the_main_loop and re-introduced forward_step
850    o some recomputations of nIter0 for TAMC
851    
852    checkpoint40pre2
853    o Updated to latest branch of AJA, JMC
854    o Added gradient check package
855    o Added routines for passive tracer handling
856    o Added carbon sequestration sensitivity experiment
857    
858    checkpoint39
859     o Modifications and fixes to support TAMC
860       (mainly missing or wrong directives)
861     o Corrected common blocks when fooling TAMC to produce adjoint I/O
862       in addummy_in_stepping
863     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
864     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
865     o Included following packages:
866       cal: calendar
867       exf: external forcing
868       ecco: essential routines to control use of cal, exf
869             (NB: this is not the full ECCO environment)
870     o disabled some packages by default in genmake
871    
872    checkpoint38
873     o see notes_c37_adj.txt
874     o corrected wrong layer index in external_forcing_t
875     o replaced the_main_loop/forward_step by the_main_loop
876     o removed forceoutput from write_state
877       (replaced criteria for initial/final state)
878     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
879    
880    checkpoint37
881     o mdsio.F routine split and packaged in pkg/mdsio
882       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
883        used unless genmake -disable=mdsio)
884     o allow a more precise surface-geopotential gradient for the atmosphere
885       taking into account the change in space of Alpha (=1/rho) at the surface.
886     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
887       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
888     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
889       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
890       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
891     o Time-Average diagnostics defined as a pseudo package "timeave".
892     o pickup files : old pickup (before c35) did not work with new code (c35
893       and after) unless activating 2 commented lines in initialise-varia.
894     o Non-Hydrostatic pickup file Pb fixed.
895     o bug with Rigid-lid version (since c35) fixed.  
896    
897    checkpoint36
898     o implement Crank-Nickelson barotropic time-stepping
899     o recover Time-Average diagnostics
900     o fix Pb in checkpoint (PR#19)
901     o AIM become a standard package ; clean unused CPP_kees
902    
903    checkpoint35
904     o subtantial rewrite of dynamics.f
905     o allows staggered time-stepping
906     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
907     o added bottom drag (linear + quadratic)
908    
909    checkpoint34
910     o Modified exchange routines for correct reverse simulation.
911     o Added verification output to comply with bug fix in impldiff.F
912       as of c33 (exp2, natl_box).
913     o Corrected store directives in dynamics.F
914     o Corrected array boundaries in impldiff.F
915     o Corrected array dimensions in gmredi.
916       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
917     o Added routine GLOBAL_SUM_INT to global_sum.F
918     o Added mdsio_gl.F for ECCO purposes.
919    
920    checkpoint33
921     o Fixed bug in lower BC in impldiff.F
922     o Fixed confusion about units of forcing arrays in FFIELDS.h
923       namely Fu,Fv,Qnet,Qsw,EmPmR:
924       - Removed verification/natl_box/code/external_fields_scale.F
925         (did not differ from that in model/src)
926       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
927         (see FFIELDS.h for description)
928       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
929         kpp_calc.F and kpp_transport_t.F
930       - Removed model/src/external_fields_scale.F and calls to it
931       - verification/natl_box uses flux data with "atmospheric" sign so
932         a special version of external_fields_load.F is used to
933         change the data as it's read in. This way, the arrays
934         have the right units and signs at all times tha a user could
935         possibly use them.
936     o Corrected genmake to delete a temporary file during configuration
937    
938    checkpoint32
939     o Scaling of forcing fields moved from external_forcing.F to
940       external_fields_scale.F, called directly after loading fields.
941     o Surface relaxation terms added to surface tendency fields in
942       extra subroutine.
943     o impldiff.F changed to avoid storing by TAMC of huge intermediate
944       fields.
945     o Changes in GMRedi to comply with packaging structure.
946     o Modifications and bug fixes in KPP package.
947     o Verification experiment for KPP added (verification/nat_box/)
948    
949    checkpoint31
950     o Packages interface brought in line with defined standard
951       -> new routines packages_...F
952       -> changes in initialise_fixed.F, initialise_varia.F
953       -> enables initialisation interface for ECCO package
954     o Rescaling of external forcing fields immediately after read
955       (removed from external_forcing.F)
956       -> new: surface_fields_scale.F
957       -> affects ini_foorcing.F, external_fields_load.F
958     o Computation of surface tendencies before tendency updates.
959       -> new: external_forcing_surf.F
960     o Change of variable names useGMRedi, useKPP, useECCO
961     o Further changes in dynamics.F, impldiff.F for TAMC
962     o Tested for experiments 0, 2, 4.
963       - not yet tested for GMRedi.
964       - not yet tested for KPP.
965    
966    checkpoint30
967     o Updates for OBCs
968     o New experiment for test OBCs (internal_wave)
969     o New output.txt in verification/exp4/results/
970     o Updates for KPP: calculation of viscosity corrected, new variables
971       kpp_dumpFreq and kpp_taveFreq
972     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
973       and entry for T90 in genmake
974    
975    checkpoint29
976     o packaged KPP and GM/Redi
977    
978    checkpoint28
979     o Corrected initialization of hFacMin for difference vertical coordinates
980     o Modified calculation of partial cell thickness to more robust algorithm
981     o config_summary.F: replaced write_1D_... by write_0D_...
982       read_write.F: added subroutines write_0D_...
983     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
984       included some initialisations required for TAMC.
985     o routine calc_isoslopes: modified sqrt computation to make it
986       differentiable for zero argument.
987     o routines dynamics, impldiff:
988       included store directives and tape key computations required for TAMC.
989     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
990    
991    checkpoint27
992     o fixed calc_isoslopes() to so that cancellation of terms in tensor
993       formulation works properly with variable resolution.
994     o restructured the calling tree between the_model_main() and dynamics()
995     o split initialise() into initialise_fixed() and initialise_varia()
996     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
997       in new routine ini_psurf()
998    
999    checkpoint26
1000     o moved some #ifdef in optional routines to encompass everything
1001       except the argument declarations. This was using up some memory.
1002     o fixed macros like _ADT to work with both versions of Linux cpp
1003     o cleaned up some unused and uninitialized variables
1004       (helps when debugging with strict compile options)
1005     o split up CPP_EEOPTIONS.h into options and macros
1006       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1007     o patch for 2 processor JAM mode
1008    
1009    checkpoint25
1010     o updates for OBCs and NH
1011     o dramatically reduced memory usage
1012     o added "JAM" routines for use on Artic network
1013     o parameterization of convection by implicit vertical diffusion
1014     o added a diagnostic of convective index
1015     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1016       (this is was partly for OBCs and NH but also in anticipation of
1017        an explicit free-surface option)
1018     o initial state input files for U and V
1019    
1020    checkpoint24
1021     o Removed some spurious "REAL"s
1022     o Updated KPP to latest version from JPL
1023     o Added a COS(latitude) in horizontal viscosity
1024    
1025    checkpoint23
1026     o Added del^4 diffusion for salt and temperature
1027     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1028    
1029    checkpoint22
1030     o Made many small changes: implicit none, format(i5), etc...
1031     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1032    
1033    checkpoint21
1034     o Introduced new I/O package that supports direct-access records (mdsio.F)
1035     o Split-up mid-level I/O routines
1036     o Updated input data for experiments 0,1,2,4 and 5
1037     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1038    
1039    checkpoint20
1040     o Tidied up open-boundaries some more
1041     o Added non-hydrostatic code
1042     o Fixed some input data
1043     o Modified MPI start-up to work in "coupled" context.
1044    
1045    checkpoint19
1046     o Tidied up directory structure for verification experiments.
1047     o Added new code for open boundaries.
1048     o Corrected advective terms near boundaries.
1049     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1050     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1051     o Split default parameters out of ini_parms.F into set_defaults.F.
1052    
1053    checkpoint18
1054     o Further changes for optional code generation with
1055       CPP - ugh!
1056    
1057    checkpoint17
1058     o Beginning to incorporating modularity
1059       for supporting atmos. and ocean configs.
1060     o Small changes for TAMC complinace
1061     o New ultra simple test case. Barotropic box
1062       configuration "exp0".
1063    
1064    checkpoint16
1065     o Minor changes to exchange routines to support
1066       accumulation in reverse mode. Adjoint of an
1067       assignment is an addition.
1068     o Changes to support compilation by TAMC (LR(1)
1069       syntax) and by g77 under Linux ( 72 character
1070       limit ).
1071    
1072    checkpoint15
1073     Rewrote exchange routines to allow
1074     o General tile <-> tile connectivity.
1075     o TAMC reverse mode flag ( is this really needed? )
1076     o Variable width overlap and exchange region widths.
1077     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1078       shmput/shmget, VIA, SYSV shmem and every other cool
1079       communication method.
1080    
1081    checkpoint14
1082     Consistent isomorphism chages made. These allow dynamical core
1083     to support both pressure and meters as a vertical coordinate.
1084    
1085    checkpoint13
1086     Release which corrects global_max problem and a couple
1087     of KGM time-averaging diagnostic errors. Also contains
1088     a double-gyre experiment setup as well as the baseline
1089     4 degree global template. The double gyre template is
1090     organised to allow it to be applied automatically to
1091     the baseline configuration.
1092    
1093    branch-point-rdot
1094     A few tidy-ups have been made bt the real point of this
1095     check-point (excuse the pun) is to allow a branch to be
1096     made for the purposes of adding the rDot alterations.
1097     I don't want to commit the rDot to the main-trunk until
1098     we've actually tested it...
1099    
1100    checkpoint12
1101     Tidy up and added generic genmake script (formerly
1102     configure script).
1103     Released to testers.
1104    
1105    checkpoint11
1106     Re-arranged initialise() and introduced ini_vertical_grid()
1107     and ini_masks_etc().
1108    
1109  checkpoint10  checkpoint10
1110   Introduced the configure script.   Introduced the configure script.
1111   Separated out the diags package.   Separated out the diags package.

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