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revision 1.6 by adcroft, Mon Jun 22 16:09:37 1998 UTC revision 1.154 by mlosch, Tue May 13 13:32:52 2003 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    checkpint50d_post
6    o change kpp output from multiple-record state files to single-record state
7      files analogous to write_state.F
8    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
9      analogous to the cg2d-related output.
10    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512, so that
11      writing to internal file fn (with length 512) fails.
12    checkpoint50d_pre
13    
14    checkpoint50c_post
15    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
16    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
17    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
18    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
19    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
20    
21    checkpoint50c_pre
22    Merging from release1_p13:
23    o bug fix for pkg/seaice dynamic solver
24    o Added SEAICE_initialHEFF to pkg/seaice
25    
26    checkpoint50b_post
27    o store u*,v* in gU,V instead of in guNm1,gvNm1
28    o in order to put the momForcing out of the Adams-Bashforth:
29      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
30      to timestep.F
31    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
32    o re-generate output for highly sensitive test-exp:
33       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
34    
35    checkpoint50b_pre
36    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
37    o corrected CPP option mismatch in exf_Bulk... functions for case
38      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
39    
40    checkpoint50a_post
41    o Bug fix for merging between c50 and KPP.
42      ikey was passed from thermodynamics to kpp_calc via
43      common block rather than being recomputed in kpp_calc,
44      in contradiction with new key itdkey.
45      New key ikppkey created, and tamc.h headers updated.
46    
47    checkpoint50
48    - 2nd step of merge with ecco-branch:
49      merge changes in ecco-branch back into main trunk
50    - bug fix in find_alpha
51    - more storing in gmredi_calc_tensor.F, kpp_routines.F
52    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
53    - merged some sliced AD support routines
54    
55    checkpoint49
56    merged from ecco-branch:
57    o exf:
58      - Enable initialisation of forcing fields to constant
59        (runtime) values.
60      - in exf_getffields.F
61        Reduce i-/j-loop to interior domain, discarding overlaps.
62        That also fixes wrong TAF-key computations for key_1, key_2
63        with bulf formulae.
64      - exf_init.F modify #ifdef for exf_init_evap
65      - exf_getffieldrec.F, ctrl_getrec.F
66        The following INT-usages are not safe:
67          fldsecs  = int(fldsecs/fldperiod)*fldperiod
68          fldcount = int(fldsecs/fldperiod) + 1
69        and were modified.
70    o autodiff: checkpoint_lev...
71      - updated storing for bulk formulae (some arrays were missing)
72      - added state for seaice package
73      - synchronized with main branch
74    o DIVA:
75      Modif.s in
76      - the_main_loop.F
77      - the_model_main.F
78      and added cost_final_restore.F cost_final_store.F
79      o With these changes, it is possible to fully separate
80        the first forward run to compute the cost function (mdthe_main_loop)
81        and adjoint runs over individual DIVA intervals (adthe_main_loop)
82        into separate model executions.
83        This enables better tuning of DIVA to given queue sizes.
84      o Loss of cost function value in consecutive DIVA runs is
85        fixed by storing to 'costfinal' file.
86      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
87        beginning/end of adjoint integration is accounted for.
88      The current changes apply to TAF-1.4.26.
89      TAF has one remaining bug, requiring one manual change
90      (see MITgcm manual).
91    o cal: synchronized between MAIN and ecco-branch
92    
93    checkpoint48i_post
94    o Changes to restore differentiability of code w.r.t. previous tag
95      (mostly adding new routines to make list and replacing
96      pressure by totPhiHyd).
97    o Updated and merged grdchk package
98      - has both ADM and TLM checks
99      - works for single- and multi-proc.
100      - output cleaned
101      - worked successfully for parallel DIVA
102    o genmake:
103      - Adding -platform=SP4
104      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
105    o Modif. for DIVA:
106      ctrl_unpack should not be called in intermediate DIVA interval.
107      (similar thing would apply for active files such as
108      tbar, sbar, psbar, which should not be reinitialised;
109      only relevant for ecco-branch)
110    
111    checkpoint48h_post
112    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
113    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
114    o Added SEAICE_initialHEFF to pkg/seaice
115    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
116    
117    checkpoint48g_post
118    --- EOS:
119    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
120      store total Potential in totPhyHyd for diagnostics & EOS.
121    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
122    --- Pressure/geopotential gradient:
123    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
124    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
125      ( changes results of global_ocean_pressure )
126    o NLFS + z-coord.: add eta*Rho' contribution.
127    o accurate phiHyd when using interface-W at the middle between 2 centers
128     ( changes results of ideal_2D_oce )
129    o includes r* 2nd term in potential gradient.
130    
131    checkpoint48f_post
132    Merging from release1_p12:
133    o Modifications for using pkg/exf with pkg/seaice
134      - improved description of the various forcing configurations
135      - added basic radiation bulk formulae to pkg/exf
136      - units/sign fix for evap computation in exf_getffields.F
137      - updated verification/global_with_exf/results/output.txt
138    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
139      (SBO) core products, including oceanic mass, center-of-mass,
140      angular, and bottom pressure (see pkg/sbo/README.sbo).
141    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
142      to avoid negative values in shallow regions.
143      - updated verification/natl_box/results/output.txt
144      - updated verification/lab_sea/results/output.txt
145    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
146    o Added useSingleCpuIO option (see PARAMS.h).
147    o Updated useSingleCpuIO option in mdsio_writefield.F to
148      work with multi-field files, e.g., for single-file pickup.
149    o pkg/seaice:
150      - bug fix in growth.F: QNET for no shortwave case
151      - added HeffFile for specifying initial sea-ice thickness
152      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
153    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
154      kpp_transport_t.F, forward_step.F, and the_main_loop.F
155    o pkg/seaice:
156      - adjoint-friendly modifications
157      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
158    
159    checkpoint48e_post
160    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
161    o dynamics: change definition of computational domain & adapt mom_fluxform
162      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
163    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
164        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
165        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
166        global_ocean.90x40x15 global_with_exf global_ocean_pressure
167        inverted_barometer solid-body.cs-32x32x1
168      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
169    
170    checkpoint48d_post
171    o in preparation for r*:
172     a) use pre-computed gradient of hydrostatic potential:
173        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
174     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
175        => affects results of glob_oce_pressure (different truncation error)  
176      update output.txt of ideal_2D_oce & global_ocean_pressure
177    
178    checkpoint48d_pre
179    o in preparation for r*:
180      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
181      pass the 2 comp. of the grad. as arguments to momentum S/R.
182      but for the moment, only used if it does not change the results.
183    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
184    
185    checkpoint48c_post
186    Modifications in treatment of initial flux forcing controls
187    to avoid extra storing of flux fields.
188    
189    checkpoint48c_pre
190    o Added tidal_basin_2d experiment (currently 1D!)
191    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
192    
193    checkpoint48b_post
194    o r* coordinate added in #ifdef NONLIN_FRSURF block.
195     (modification to pressure gradient not yet implemented)
196    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
197      (for U & V) that are used for vertical advection of momentum.
198    
199    checkpoint48a_post
200    o In preparation for r*, use temp. array to compute vertical transport
201       in flux-form momentum pkg. => change results of few test-exp.
202      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
203                        lab_sea, natl_box & plume_on_slope
204    
205    checkpoint48
206    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
207    
208    checkpoint47j_post
209    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
210    o moved adexch from forward_step to addummy_in_stepping
211    o added exch in ctrl_map_...
212    o aveFreq.=0. at end of cost_final to avoid overwrite in
213      reverse checkpointing loop
214    o Yet more changes in gmredi:
215      * adgmredi_calc_tensor
216        avoiding all recomputation of gmredi_slope_limit
217      * adgmredi_x/y/rtransport
218        added flag for excessive storing to avoid recomp. of
219        u/v/rtans, dTdx/y/z
220        -> this is not really necessary and very memory-consuming
221      * adgmredi_slope_psi:
222        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
223      * gmredi_slope_limit
224        re-activated full calculation of taperfct for case 'ac02'
225    o updating verification/ adjoints of carbon, global_ocean.90x40x15
226    
227    checkpoint47i_post
228    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
229    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
230      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
231    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
232    o gmredi: fix few bugs.
233    
234    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
235    This will be a good checkpoint to plug into the ecco-branch.
236    o few modif.'s to get latest version adjointed
237      (mainly kick out code in ini_linear_phisurf)
238    o modif's to run adjoint with exactConserv
239    o case GM_BOLUS_ADVEC should be cleaned
240      S/R gmredi_slope_psi should be cleaned
241    o verification/carbon now has exactConserv=.TRUE.
242    
243    checkpoint47g_post
244    o time-average AIM output: becomes independent from statvars time-average
245      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
246    o After TAF bug fix:
247      Tested adjoint of gmredi package.
248      Tests were done with checkpoint47 rather than with latest
249      checkpoint47f_post since the latter is broken for the adjoint
250      verification/carbon/ contains both ADM and TLM gradient checks.
251    Here they are, before they get changed/lost/stolen.
252    Mostly modif.'s to fix numerical sensitivities.
253    Gradient checks OK for
254    - GM_taper_scheme:
255      * clipping
256      * ac02
257      * linear
258      * glw91
259      * dm95
260      * ldd97
261    - GMREDI_OPTIONS:
262      * GM_VISBECK_VARIABLE_K
263      * GM_NON_UNITY_DIAGONAL
264      * GM_EXTRA_DIAGONAL
265      * GM_BOLUS_ADVEC
266    in conjunction with data.gmredi parameters to be checked in
267    in a few minutes under verification/carbon/code/
268    
269    checkpoint47f_post
270    Merging from release1_p10:
271    o modifications for using pkg/exf with pkg/seaice
272      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
273        and SEAICE_EXTERNAL_FLUXES
274      - pkg/exf CPP options EXF_READ_EVAP and
275        EXF_NO_BULK_COMPUTATIONS
276      - usage examples are Experiments 8 and 9 in
277        verification/lab_sea/README
278      - verification/lab_sea default experiment now uses
279        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
280    
281    checkpoint47e_post
282    o created a tag prior to creating a branch
283    
284    checkpoint47d_post
285    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
286      at the bottom boundary had an erroneous half slip boundary condition
287    o added bottom drag and no slip boundary condition capabilities to
288      oceanic pressure coordinates code
289    o added new verification experiment global_ocean_pressure, this experiment is
290      also described in the tutorial section of the manual
291    checkpoint47d_pre
292    
293    checkpoint47c_post
294    o Added a verification experiment for a global cubed-sphere ocean run
295      -  verification/global_ocean.cubed32x32x30
296      -  uses pkg/therm_seaice and pkg/bulk_forcing
297    
298    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
299    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
300      when using P-coordinate; only implemented for atmospheric config.
301    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
302      NOTES: requires option NONLIN_FRSURF to be "#define".
303    o update advect_xz/results/output.txt (left from checkpoint44g_post)
304    
305    checkpoint47b_post
306    Merging from release1_p9:
307    o pkg/seaice
308      - removed GOTO's and added taf directives
309      - double precision constants to reduce the g77 (Linux)
310        to F77 (SGI) differences reported in release1_p8
311    o tools/genmake
312      - added SGI options
313    o verification/testscript
314      - updated to that of checkpoint47a_post
315    o verification/global_ocean.90x40x15/input/eedata
316      - modified for SGI f77 compatibility
317    o verification/lab_sea
318      - added description of sea-ice model
319      - added missing matlab routines
320      - added test of thermodynamics parallelization
321    
322    checkpoint47a_post
323    o new pkg: aim_v23
324     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
325       for now, keep the same surface forcing as before.
326     - Part-Cell implemented into AIM; check that Heat & Water are conserved
327     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
328     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
329    o add diagnostic of surface correction term in monitor output
330    
331    o bulk_force and therm_seaice
332    - Two packages:  bulk_force (Bulk forcing)
333      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
334    - Earlier integration from Stephaine Dutkiewicz
335      and Patrick Heimbach.
336    - Two ifdef statements for compile time,
337       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
338    
339    checkpoint47
340    differentiable version of checkpoint46n_post
341    o bug fix in quasihydrostaticterms
342    o * "clean" adjoint code (in terms of extensive recomputations)
343        can now be obtained for all GMREDI options (i.e. for
344        - GM_VISBECK_VARIABLE_K
345        - GM_NON_UNITY_DIAGONAL
346        - GM_EXTRA_DIAGONAL
347        - GM_BOLUS_ADVEC )
348      * However, wrong gradient check problem remains unsolved.
349      * New CPP options have been introduced for different
350        tapering schemes
351    o external_fields_load now part of differentiation list
352    o pressure needs multiple storing;
353      would be nice to have store_pressure at beginning or
354      end of forward_step, e.g. by having phiHyd global (5-dim.)
355      (NB: pressure is needed for certain cases in find_rho,
356      which is also invoked through convective_adjustment).
357    o recomputations in find_rho for cases
358     'JMD95'/'UNESCO' or 'MDJWF' are OK.
359    o #define ATMOSPHERIC_LOADING should be differentiable
360    o ini_forcing shifted to begining of initialise_varia
361    o Incorporating QNVS line search routines into MITgcm
362      (this is separate code, and therefore not under pkg)
363      lsopt/, optim/
364    o Updated verification/carbon/
365      - #define GM_VISBECK_VARIABLE_K
366      - GM_taper_scheme    = 'ldd97'    
367    
368    checkpoint46n_post
369    Merging from release1_p8:
370    o verification/natl_box:
371      updating new external_fields_load routine
372    o New package: pkg/seaice
373      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
374      The sea-ice code is based on Hibler (1979-1980).
375      Two sea-ice dynamic solvers, ADI and LSR, are included.
376      In addition to computing prognostic sea-ice variables and diagnosing
377      the forcing/external data fields that drive the ocean model,
378      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
379      The implied surface heat flux is then stored in variable
380      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
381      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
382      non-local transport term.  Because this call precedes model
383      thermodynamics, temperature under sea-ice may not be "exactly" at
384      the freezing point by the time theta is dumped or time-averaged.
385      N.B.: fairly large differences in accuracy occur across
386            different platforms/compilers; comparison between
387            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
388            generated output gives:
389       T           S           U           V
390      C D M    c        m  s        m  s        m  s        m  s
391      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
392      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
393      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
394    
395      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
396    o GAD:
397      - generated new common blocks to account for call of
398        same gad routines with differing traceridentities
399        (needed to modify tracerIdentity indices in GAD.h)
400      - generated separate common blocks for case useCubedSphereExchange
401        (Department of Futurology)
402      - parameter lists to gmredi_?transport: added tracerIdentity
403      - added new key indices to tamc.h
404    o external_fields_load:
405      - added this routine to TAF list
406      - needed to make some common blocks global and additional storing
407        along the same lines as exf package (checkpoint_lev?_directives.h)
408    o exf:
409      updated external forcing package
410      - bug fixes carried over from ecco-branch
411        (missing OBCS_OPTIONS.h in two routines)
412      - enable easy to use "no forcing".
413      - added exf I/O for atmospheric loading
414      - added exf I/O for runoff data
415      - transfered scaling between exf <-> MITgcm to exf namelist
416    o Adding new verification experiment global_with_exf.
417      This verification experiment is almost identical to the
418      global_ocean.90x40x15 experiment, except that it uses
419      the exf (and cal) package instead of the
420      external_fields_load routine (cf README file).
421    
422    checkpoint46m_post
423    o modified testscript to return -- when there are no lines of "%MON" output
424    o added new flag "quasiHydrostatic" for QH mode
425      and new routine quasihydrostaticterms()
426    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
427      New routine: mom_u_coriolis_nh()
428    o fixed sign of non-hydrostatic metric terms in u and v equations.
429      Depend on correct sign of gravitySign.
430    o added work.pc* to .cvsignore in aim directories using ifc
431    o introduced flag for controllin non-hydrostatic metric terms
432    o removed gravitySign from PARM04
433    o switched to g77/ifc from pgf77 in aim experiments
434    
435    checkpoint46l_post
436    o made convective adjustment work with pressure coordinates:
437     - changed the direction of k-loop in convective_adjustment.F for the
438       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
439     - adjusted the reference pressure k-index in convective_adjustment.F
440     - adjusted the convection condition in convect.F (in analogy to
441       calc_ivdc.F)
442     - convective_adjustment no longer computes anything on the halos
443     - removed the warnings about negative salinity from find_rho.F and
444       find_alpha.F; instead the new routine look_for_neg_salinity, called
445       at the beginning of find_rho, find_alpha, and find_beta, does a
446       check of the entire slice, if CPP-option
447       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
448    checkpoint46l_pre
449    
450    checkpoint46k_post
451    o fixed the verification/global_ocean.90x40x15 experiment:
452     - new bathymetry (the world according to A., JMC, and M.)
453     - new initial fields and forcing fields (*.bin files)
454     - new POLY3.COEFFS (for the next release one should switch to a full
455       equation of state: JMD95P or MDJWF)
456     - fixed several errors and redundancies in the data file
457     - experiment uses looped cells
458     - added matlab directory with diagnostic scripts for plotting of output
459    
460    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
461     - read AIM physics parameters from a file (data.aimphys)
462     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
463    
464    checkpoint46j_post
465    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
466    o move wVel computation at the end of the time step, in S/R integr_continuity
467    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
468    o update timeave pkg for wVel diagnostic.
469    checkpoint46j_pre
470    
471    checkpoint46i_post
472    o Clean up AIM package (and keep the results unchanged):
473      include CPP_OPTION and use IMPLICT NONE in all routines ;
474      declare all the variables _RL ; use _d 0 for all numerical constants.
475      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
476    
477    checkpoint46h_post
478    o cleaned up the use of rhoNil and rhoConst.
479      - rhoNil should only appear in the LINEAR equation of state, everywhere
480        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
481        and the dynamical equations are all divided by rhoConst
482    o introduced new parameter rhoConstFresh, a reference density of fresh
483      water, to remove the fresh water flux's dependence on rhoNil. The default
484      value is 999.8 kg/m^3
485    o cleanup up external_forcing.F and external_forcing_surf.F
486      - can now be used by both OCEANIC and OCEANICP
487    checkpoint46h_pre
488    
489     Added code to convert surface volume flux (fresh water) into
490     a mass flux when using P coordinates in the ocean (OCEANICP).
491     Note: It assumes you have set rho0=rhoConst=density of fresh water.
492    
493    checkpoint46g_post
494    o Include a new diagnostic variable phiHydLow for the ocean model
495      - in z-coordinates, it is the bottom pressure anomaly
496      - in p-coordinates, it is the sea surface elevation
497      - in both cases, these variable have global drift, reflecting the mass
498        drift in z-coordinates and the volume drift in p-coordinates
499      - included time averaging for phiHydLow, be aware of the drift!
500    o depth-dependent computation of Bo_surf for pressure coordinates
501      in the ocean (buoyancyRelation='OCEANICP')
502      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
503        Theta, Salinity, and Pressure in the parameter list. This routine is
504        presently contained in find_rho.F. This routine does not give the
505        correct density for 'POLY3', which would be a z-dependent reference
506        density.
507    o cleaned up find_rho
508      - removed obsolete 'eqn' from the parameter list.
509    o added two new verification experiments: gop and goz
510      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
511    checkpoint46g_pre
512    
513    checkpoint46f_post
514    o Enable tangent linear (forward mode) gradient checks:
515      - extended active file handling to g_... files
516      - added TANGENT_SIMULATION to theSimulationMode
517      - extended grdchk package accordingly
518    o added tangent linear setup in verification/carbon/code_ftl
519    o added adjoint setup in verification/front_relax/code_ad
520    
521    checkpoint46e_post
522    o Added new equation of state -> MDJWF
523      - EOS of McDougall et al., 2002, JAOT, submitted
524      - caveat: the equation of state is only valid for a smaller (more
525        realistic?) range of values than JMD95P/Z and UNESCO
526      - added masks to the calculation of pressure in store_pressure
527      - added more check values for density in check_eos (ini_eos.F), some of
528        the old check values are out of the range of the MDJWF-eos, so don't
529        expect perfect matches for those
530    checkpoint46e_pre
531    
532    checkpoint46d_post
533    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
534      'OCEANICP', also initialised field pressure correctly in ini_eos in the
535      case of pressure coordinates. eosType='JMD95Z' in
536      combination with buoyancyRelation='OCEANICP' now causes an error.
537    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
538      in find_alpha/beta.
539    checkpoint46d_pre
540    
541    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
542      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
543    
544    checkpoint46c_post
545    o Changes necessary for ocean in p-coordinates
546     -  Added new buoyancy relation = 'OCEANICP'
547     -  Added new parameters = gravitySign (this used to be contained inside
548        the factor dRdZ which I added when we first switched to R coordinates).
549     X GM/Redi is not compatible (yet)
550     X bottom drag and no-slip need to be debugged.
551    checkpoint46c_pre
552    
553    checkpoint46b_post
554    o Added new equation of state -> JMD95Z and JMD95P
555      - EOS of Jackett and McDougall, 1995, JAOT
556      - moved all EOS parameters into EOS.h
557      - new routines ini_eos.F, store_pressure.F
558    o Added UNESCO EOS, but not recommended because it requires
559      in-situ temperature (see JMD95)
560    o Modified formatting for knudsen2.f in utils/knudsen2 and added
561      unesco.f to be used with POLY3
562    checkpoint46b_pre
563    
564    checkpoint46a_post
565    o Added (atmospheric) pressure loading
566      - new field in FFIELDS.h, etc...
567      - new cpp flag ATMOSPHERIC_LOADING
568    o Changed hFacC to _hFacC in calc_phi_hyd.F
569    o Added SHORTWAVE_HEATING to some files for consistency
570    checkpoint46a_pre
571    
572    checkpoint46
573    further merges from release1_p5
574    o new ctrl package
575      - adopted from ECCO environment to enable optimization
576      - added Eliassen Palm fluxes to controls
577    o added Eliassen Palm flux controls to gradient check package
578    o cost package
579      - Compatible with new ctrl package
580      - added Eliassen Palm cost hooks
581      - modif's of existing cost functions
582    o Adjoint-related bug fixes in kpp:
583      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
584      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
585    o autodiff package
586      - flow directives:
587        + new for S/R do_the_model_io
588        + enhanced for S/R checkpoint
589        + new gmredi.flow
590      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
591        disable adcommon.h/g_common.h by default.
592      - fixed problem for adjoint of global_max
593    o modified verification/carbon/
594    o New setup for adjoint of global_ocean
595    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
596    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
597    o incorporated hooks for sponge layer code (external_forcing.F)
598    
599    checkpoint45d_post
600    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
601    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
602      (affects plume_on_slope "cg2d" output)
603    o add new parameter deltaTfreesurf for free-surface time stepping
604    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
605    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
606    o change phiMin in exp1 (to agree with documentation)
607    o add new flags:
608     - T,S forcing inside/outside Adams-Bashforth
609     - turn off temp,salt advection and/or forcing
610     - for each tracer, define internal flag for multiDimAdvection & A-B
611    o monitor: change definition of KE to check conservation of Energy
612    
613    checkpoint45c_post
614    o Removed f90 comments ("!")
615    o Modified initialisations to enable exf package for MITgcm
616      (without invoking ECCO_PACKAGE).
617    o modifications to gradient check package (Martin Losch)
618      - enable centered differences
619      - modified format of standard output
620    
621    checkpoint45b_post
622    o cleaned exchange calls in cg2d
623    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
624    o included CPP option SINGLE_LAYER_MODE in thermodynamics
625      to configure barotropic setup (Martin Losch)
626    o moved some initialisations within bi,bj loop in dynamics
627      (TAF flow dependency)
628    o in initialise_varia, moved call packages_init_variables
629      before convective_adjustment_init
630      (corresponding adjustment of TAF tape initialisation).
631    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
632    
633    checkpoint45a_post
634    o compute Rho over the whole domain (extend iMin,jMin indices)
635    o specific exchange for X-slice domain (case Ny=1)
636    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
637    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
638    
639    checkpoint44h_post = checkpoint45
640    o Fix to restore differentiability:
641      place at which packages_init_variables is called in
642      initialise_varia is crucial for reverse control flow.
643    o modifications in GMRedi to enable stable adjoint
644      (corresponding modif's in thermodynamics, dynamics)
645    o added missing hook for sponge layer code in external_forcing
646    o modified test cost functions
647    o storing in gad_advection (plus removal of write(0,*)!
648    o missing headers TR1.h added in convective_adjustment routines
649    o errorMessageUnit set non-equal zero in eeboot
650      (conflict on some platforms, e.g. IBM SP3)
651    o modified carbon verif.
652    
653    checkpoint44h_pre
654    o vertical grid option: allow to put the Interface at the middle between
655      2 cell-centers ; replace delZ in pkg/kpp by drF.
656    o GM Advective form: Tracers are advected using the residual transport (=
657      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
658    
659    checkpoint44g_post
660    o fix surface correction term in multiDimAdvection (affects plume_on_slope
661      results) ; ifdef missing in thermodynamics.F
662    
663    checkpoint44f_pre,checkpoint44f_post
664    o added PTRACERS package
665      This allows an arbitrary number of passive tracers to be integrated
666      forward simultaneously with the dynamicaly model.
667      + Implemented so far:
668        - basic forward algorithm (time-stepping, advection, diffusion, convection)
669        - I/O and checkpointing
670        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
671      + Not implemented so far:
672        - KPP
673        - OBCS
674      + No specific example supplied (yet) but global_ocean.90x40x15 has the
675        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
676        line in data.pkg.
677      + This package is disabled by default since it increases storage.
678    
679    
680    o testscript: added -cleanup option
681    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
682                 b) enable to filter 2D fields.
683    
684    checkpoint44e_pre,post
685    o re-wrote convective adjustment to use pre-calculated weights
686      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
687      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
688      Original calls to convect() still in place.
689    
690    chkpt44d_pre,post
691    o added missing EXCLUDE_MONITOR flags
692    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
693      (incompatible typ in MIN/MAX expressions caused problems
694      on IBM SP3)
695    o in genmake added variable MAKEDEPEND
696      plus resetting for case SunOS
697    o added timer_stats.c routine for IBM SP3
698    o removed variables in dynamics
699    !!! I forgot to create tag chkpt44d_pre !!!
700    !!! But chkpt44d_pre = chkpt44c_post    !!!
701    
702    o real fresh water flux implemented with non-linear free-surface.
703    
704    chkpt44c_pre,post
705    o few fix (mask in shap_s2, EmPmR in external_field_load,
706      USE_NATURAL_BCS in solve_for_P);
707    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
708    
709    checkpoint44b_pre/_post
710    o merge of relevant stuff from the ecco-branch:
711      - genmake: removed $S64 overwrite for case SunOS
712      - pkg/exf: update and corrections for field swapping and obcs
713      - pkg/ecco: parameter lists for the_model_main, the_main_loop
714                  harmonized between ECCO and MITgcm
715      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
716                      updated checkpointing_lev... lists for obcs
717      - model/src: minor changes in forward_step, plot_field
718                   added directive for divided adjoint in the_main_loop
719      - pkg/mdsio: added mdsio_gl_slice
720    
721    o check parameters & config (chkpt44a_pre,post)
722    o OBC and NonLin_FrSurf.
723    
724    checkpoint44
725    o fix bug in mom_vi_del2uv
726    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
727    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
728    o update AIM experiments (NCEP input files)
729    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
730    o added some stuff for AD
731    
732    checkpoint43
733    o added two new advection tests
734    o added global 4x4 degree ocean test
735    o added test of H&S94 with free surface on cube
736    o some final mods for gradient check, adjoint,...
737    
738    checkpoint42
739      Fixed AD-related problems:
740    o Store directives up-to-date with re-arranged Adams-Bashforth
741      (mainly thermodynamics.F)
742    o New store directives for multi-dim. advection schemes
743      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
744      * new common block and key passkey
745      (mainly gad_advection.F)
746    o Modified store directives for split of dynamics/thermodynamics
747      for the case ALLOW_KPP
748    o Cleaned argument list for timestep_tracer.F
749    
750    checkpoint41
751    o re-formatted/added comments in prologues of key subroutines
752      to work with protex
753    
754    checkpoint40
755    o moved calc_gs, calc_gt and calc_tr1 back to model/src
756    o added FLT (floats) package from Arne along with demo. experiment
757    o re-arranged Adams-Bashforth scheme for tracers to allow easier
758      implementation of forward-in-time forcing terms
759    o more mods for non-linear free-surface including new variable
760    o modified multi-dim method to work on cube
761    o bug fix in KPP (from DM)
762    
763    checkpoint40pre9
764    o added DST advection schemes
765    o fix MPI bug on SGI's
766    o modifications for non-linear free-surface
767    o fixed conditionals for fixed flow/passive tracer only mode
768    o added tension/strain form of stress tensor
769    o changes to commenting of arguments for TAF/TAMC
770    o added/updated many matlab scripts
771    o added multi-dimensional advection method for tracers
772      
773    checkpoint40pre8
774    o new package rw/
775      Added method for dumping intermediate local arrays:
776      mdsio_writetile - same as mdsio_writefield except works from inside
777                        bi,bj loop
778      mdsio_writelocal - same as mdsio_writetile except works for local
779                         arrays
780      write_local_r? - higher-level wrapper for mdsio_writelocal
781      Controlled by diagFreq. Defaults to zero (ie. no dumps)
782      Example given at end of mom_vecinv.F that dumps some local arrays.
783    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
784      control flux-form versus vector invariant code.
785      Switch is runtime flag vectorInvariantMomentum (defaults to false)
786      or genmake -DISABLE ...
787    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
788      (additional storing is now needed for case vecinv;
789      currently nothing implemented to switch this storing off
790      in case fluxform is used since no CPP flag available).
791    
792    checkpoint40pre7
793    o bug fix in dynamics.F
794      calc_viscosity called before k=1,Nr loop.
795    o added some #ifdef's ALLOW_PASSIVE_TRACER
796    o cleaned initialisations in ctrl_map_ini
797      related to TAF
798    
799    checkpoint40pre6
800    o split dynamics into thermodynamics & dynamics
801    o corresponding split of calc_diffusivity into
802      calc_diffusivity, calc_viscosity
803      (kpp_calc_diff, kpp_calc_visc).
804    o Added diffkr, kapgm to control variables
805    o bug fix in gmredi_slope_limit for ldd97
806    
807    checkpoint40pre5
808    o proper initialization of Adams-Bashforth time stepping
809      + uses forward step for very first step of model (iter=0)
810    o re-generated *all* output since almost all output is modified by this
811      change (sorry but we've been putting this one off for about 2 years)
812      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
813        *not* regenerated since they are already out of date and I don't
814        want to create the impression that they are suddenly working.
815    o removed KAP stuff for DEC's
816    o modified/added many .cvsignore files in */code and */input
817    o added new expt "solid-body.cs-32x32x1"
818      + this uses an alternative form of ini_curvilinear_grid.F which
819        is not necessarily any better than the current one...
820    
821    checkpoint40pre4
822    o added re-initialisations of utrans,vtrans,rtrans in
823      calc_common_factors which are crucial for TAF.
824    o extended iMin,jMin range for calc_common_factors,
825      calc_diffusivity
826    o added option ALLOW_PASSIVE_TRACER
827    o a few minor updates and fixes
828    
829    checkpoint40pre3
830    o created calc_gtr1.F for gad package
831    o split the_main_loop and re-introduced forward_step
832    o some recomputations of nIter0 for TAMC
833    
834    checkpoint40pre2
835    o Updated to latest branch of AJA, JMC
836    o Added gradient check package
837    o Added routines for passive tracer handling
838    o Added carbon sequestration sensitivity experiment
839    
840    checkpoint39
841     o Modifications and fixes to support TAMC
842       (mainly missing or wrong directives)
843     o Corrected common blocks when fooling TAMC to produce adjoint I/O
844       in addummy_in_stepping
845     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
846     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
847     o Included following packages:
848       cal: calendar
849       exf: external forcing
850       ecco: essential routines to control use of cal, exf
851             (NB: this is not the full ECCO environment)
852     o disabled some packages by default in genmake
853    
854    checkpoint38
855     o see notes_c37_adj.txt
856     o corrected wrong layer index in external_forcing_t
857     o replaced the_main_loop/forward_step by the_main_loop
858     o removed forceoutput from write_state
859       (replaced criteria for initial/final state)
860     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
861    
862    checkpoint37
863     o mdsio.F routine split and packaged in pkg/mdsio
864       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
865        used unless genmake -disable=mdsio)
866     o allow a more precise surface-geopotential gradient for the atmosphere
867       taking into account the change in space of Alpha (=1/rho) at the surface.
868     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
869       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
870     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
871       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
872       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
873     o Time-Average diagnostics defined as a pseudo package "timeave".
874     o pickup files : old pickup (before c35) did not work with new code (c35
875       and after) unless activating 2 commented lines in initialise-varia.
876     o Non-Hydrostatic pickup file Pb fixed.
877     o bug with Rigid-lid version (since c35) fixed.  
878    
879    checkpoint36
880     o implement Crank-Nickelson barotropic time-stepping
881     o recover Time-Average diagnostics
882     o fix Pb in checkpoint (PR#19)
883     o AIM become a standard package ; clean unused CPP_kees
884    
885    checkpoint35
886     o subtantial rewrite of dynamics.f
887     o allows staggered time-stepping
888     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
889     o added bottom drag (linear + quadratic)
890    
891    checkpoint34
892     o Modified exchange routines for correct reverse simulation.
893     o Added verification output to comply with bug fix in impldiff.F
894       as of c33 (exp2, natl_box).
895     o Corrected store directives in dynamics.F
896     o Corrected array boundaries in impldiff.F
897     o Corrected array dimensions in gmredi.
898       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
899     o Added routine GLOBAL_SUM_INT to global_sum.F
900     o Added mdsio_gl.F for ECCO purposes.
901    
902    checkpoint33
903     o Fixed bug in lower BC in impldiff.F
904     o Fixed confusion about units of forcing arrays in FFIELDS.h
905       namely Fu,Fv,Qnet,Qsw,EmPmR:
906       - Removed verification/natl_box/code/external_fields_scale.F
907         (did not differ from that in model/src)
908       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
909         (see FFIELDS.h for description)
910       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
911         kpp_calc.F and kpp_transport_t.F
912       - Removed model/src/external_fields_scale.F and calls to it
913       - verification/natl_box uses flux data with "atmospheric" sign so
914         a special version of external_fields_load.F is used to
915         change the data as it's read in. This way, the arrays
916         have the right units and signs at all times tha a user could
917         possibly use them.
918     o Corrected genmake to delete a temporary file during configuration
919    
920    checkpoint32
921     o Scaling of forcing fields moved from external_forcing.F to
922       external_fields_scale.F, called directly after loading fields.
923     o Surface relaxation terms added to surface tendency fields in
924       extra subroutine.
925     o impldiff.F changed to avoid storing by TAMC of huge intermediate
926       fields.
927     o Changes in GMRedi to comply with packaging structure.
928     o Modifications and bug fixes in KPP package.
929     o Verification experiment for KPP added (verification/nat_box/)
930    
931    checkpoint31
932     o Packages interface brought in line with defined standard
933       -> new routines packages_...F
934       -> changes in initialise_fixed.F, initialise_varia.F
935       -> enables initialisation interface for ECCO package
936     o Rescaling of external forcing fields immediately after read
937       (removed from external_forcing.F)
938       -> new: surface_fields_scale.F
939       -> affects ini_foorcing.F, external_fields_load.F
940     o Computation of surface tendencies before tendency updates.
941       -> new: external_forcing_surf.F
942     o Change of variable names useGMRedi, useKPP, useECCO
943     o Further changes in dynamics.F, impldiff.F for TAMC
944     o Tested for experiments 0, 2, 4.
945       - not yet tested for GMRedi.
946       - not yet tested for KPP.
947    
948    checkpoint30
949     o Updates for OBCs
950     o New experiment for test OBCs (internal_wave)
951     o New output.txt in verification/exp4/results/
952     o Updates for KPP: calculation of viscosity corrected, new variables
953       kpp_dumpFreq and kpp_taveFreq
954     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
955       and entry for T90 in genmake
956    
957    checkpoint29
958     o packaged KPP and GM/Redi
959    
960    checkpoint28
961     o Corrected initialization of hFacMin for difference vertical coordinates
962     o Modified calculation of partial cell thickness to more robust algorithm
963     o config_summary.F: replaced write_1D_... by write_0D_...
964       read_write.F: added subroutines write_0D_...
965     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
966       included some initialisations required for TAMC.
967     o routine calc_isoslopes: modified sqrt computation to make it
968       differentiable for zero argument.
969     o routines dynamics, impldiff:
970       included store directives and tape key computations required for TAMC.
971     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
972    
973    checkpoint27
974     o fixed calc_isoslopes() to so that cancellation of terms in tensor
975       formulation works properly with variable resolution.
976     o restructured the calling tree between the_model_main() and dynamics()
977     o split initialise() into initialise_fixed() and initialise_varia()
978     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
979       in new routine ini_psurf()
980    
981    checkpoint26
982     o moved some #ifdef in optional routines to encompass everything
983       except the argument declarations. This was using up some memory.
984     o fixed macros like _ADT to work with both versions of Linux cpp
985     o cleaned up some unused and uninitialized variables
986       (helps when debugging with strict compile options)
987     o split up CPP_EEOPTIONS.h into options and macros
988       (macros are now in eesupp/inc/CPP_EEMACROS.h)
989     o patch for 2 processor JAM mode
990    
991    checkpoint25
992     o updates for OBCs and NH
993     o dramatically reduced memory usage
994     o added "JAM" routines for use on Artic network
995     o parameterization of convection by implicit vertical diffusion
996     o added a diagnostic of convective index
997     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
998       (this is was partly for OBCs and NH but also in anticipation of
999        an explicit free-surface option)
1000     o initial state input files for U and V
1001    
1002    checkpoint24
1003     o Removed some spurious "REAL"s
1004     o Updated KPP to latest version from JPL
1005     o Added a COS(latitude) in horizontal viscosity
1006    
1007    checkpoint23
1008     o Added del^4 diffusion for salt and temperature
1009     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1010    
1011    checkpoint22
1012     o Made many small changes: implicit none, format(i5), etc...
1013     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1014    
1015    checkpoint21
1016     o Introduced new I/O package that supports direct-access records (mdsio.F)
1017     o Split-up mid-level I/O routines
1018     o Updated input data for experiments 0,1,2,4 and 5
1019     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1020    
1021    checkpoint20
1022     o Tidied up open-boundaries some more
1023     o Added non-hydrostatic code
1024     o Fixed some input data
1025     o Modified MPI start-up to work in "coupled" context.
1026    
1027    checkpoint19
1028     o Tidied up directory structure for verification experiments.
1029     o Added new code for open boundaries.
1030     o Corrected advective terms near boundaries.
1031     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1032     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1033     o Split default parameters out of ini_parms.F into set_defaults.F.
1034    
1035    checkpoint18
1036     o Further changes for optional code generation with
1037       CPP - ugh!
1038    
1039    checkpoint17
1040     o Beginning to incorporating modularity
1041       for supporting atmos. and ocean configs.
1042     o Small changes for TAMC complinace
1043     o New ultra simple test case. Barotropic box
1044       configuration "exp0".
1045    
1046    checkpoint16
1047     o Minor changes to exchange routines to support
1048       accumulation in reverse mode. Adjoint of an
1049       assignment is an addition.
1050     o Changes to support compilation by TAMC (LR(1)
1051       syntax) and by g77 under Linux ( 72 character
1052       limit ).
1053    
1054    checkpoint15
1055     Rewrote exchange routines to allow
1056     o General tile <-> tile connectivity.
1057     o TAMC reverse mode flag ( is this really needed? )
1058     o Variable width overlap and exchange region widths.
1059     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1060       shmput/shmget, VIA, SYSV shmem and every other cool
1061       communication method.
1062    
1063    checkpoint14
1064     Consistent isomorphism chages made. These allow dynamical core
1065     to support both pressure and meters as a vertical coordinate.
1066    
1067    checkpoint13
1068     Release which corrects global_max problem and a couple
1069     of KGM time-averaging diagnostic errors. Also contains
1070     a double-gyre experiment setup as well as the baseline
1071     4 degree global template. The double gyre template is
1072     organised to allow it to be applied automatically to
1073     the baseline configuration.
1074    
1075    branch-point-rdot
1076     A few tidy-ups have been made bt the real point of this
1077     check-point (excuse the pun) is to allow a branch to be
1078     made for the purposes of adding the rDot alterations.
1079     I don't want to commit the rDot to the main-trunk until
1080     we've actually tested it...
1081    
1082    checkpoint12
1083     Tidy up and added generic genmake script (formerly
1084     configure script).
1085     Released to testers.
1086    
1087    checkpoint11
1088     Re-arranged initialise() and introduced ini_vertical_grid()
1089     and ini_masks_etc().
1090    
1091    checkpoint10
1092     Introduced the configure script.
1093     Separated out the diags package.
1094     Added template for writing time-averages of tile/intermediate quantities.
1095     Updated SIZE.h in exp2 and made the data big-endian.
1096    
1097    checkpoint9
1098     MPI fix. Filename changes (meta/data). salbin*y stuff.
1099     General tidy-up.
1100     SST.bin SSS.bin added to verification/exp2
1101    
1102  checkpoint8  checkpoint8
1103   Inludes time-dependant forcing and time-averaging.   Inludes time-dependant forcing and time-averaging.

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