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revision 1.13 by cnh, Wed Sep 9 15:24:19 1998 UTC revision 1.176 by dimitri, Thu Aug 7 02:31:28 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint51f_pre
7    o Added on-the-fly spatial interpolation capability
8        "USE_EXF_INTERPOLATION" to pkg/exf.
9      - This is a temporary Cartesian-grid hack until
10        the super-duper ESMF coupler becomes available.
11      - See verification/global_with_exf/README for usage example.
12      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
13        flags and modified pkg/seaice accordingly.
14    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
15        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
16        non-local transport term.
17    
18    checkpoint51e_post
19    o pkg/mom_vecinv:
20      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
21      - add time-ave diagnostic of vorticity advection.
22    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
23    o atmospheric geopotential: - include water vapor effect;
24                                - use p^kappa in p* scaling.
25    o land pkg: read initial state from files.
26    o AIM : add stratospheric drag in the upper level
27    
28    checkpoint51d_post
29    o change function ILNBLNK (=> last non-blank char.) to return zero
30      (instead of the string length) when the string. char is empty
31    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
32    o modif's to restore TAMC compatibility
33      - avoid "_d" constructs in PARAMETER declarations
34      - avoid interrupting lines by comment lines
35    o Use cluster local disks for purely local I/O
36      vs. globally visible disks needed for ctrl stuff
37      (merged from ecco-branch)
38      - new active_file_loc... and mdsio_..._loc routines
39      - affected packages: autodiff, ctrl, grdchk, mdsio
40    
41    checkpoint51c_post
42    o introducing integer flag debugLevel
43      - debLevZero: suppress all output
44      - debLevA: standard
45      - debLevB: equivalent to current debugMode=.TRUE.
46    o introducing pathname variable mdsioLocalDir for mdsio
47      that can be specified at runtime
48      (relevant for cluster I/O to local disk)
49    `
50    >>>checkpoint51b_post
51    adjoint of ptracers
52    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
53    o extended state in checkpoint_lev?, etc.
54    o alternative ctrl/cost with tr1 or ptracer
55    o new comlev1_bibj_ptracers
56    o new ptracers.flow
57    o made ptracers_forcing same as external_forcing_s
58    o added verification for adjoint with ptracers
59      - adm. grdchk fail so far
60      - tlm. grdchk OK
61      - checked tapelev/comlev recomputations: OK
62    <<<checkpoint51b_pre
63    
64    checkpoint51a_post
65    o added code for biogeochemistry package
66      - new pkgs: dic, gchem
67      - new subroutine in ptracers
68    o modify code for biogeo packages
69      - in model/src and pkg/ptracers
70    
71    checkpoint51
72    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
73      - autodiff, ctrl, exf, grdchk, seaice
74      kept separate packages
75      - cost, ecco, obcs
76    o updating verification/internal_wave, verification/lab_sea
77      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
78    
79    checkpoint50i_post
80    o Preparing next differentiable checkpoint and sync
81      of MAIN vs. ecco-branch
82      - 1st step: this one is differentiable
83      - 2nd step: next(! not this) checkpoint will have updated packages
84                  from ecco-branch)
85    
86    checkpoint50h_post
87    o new package "land": provide surface BC for AIM.
88    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
89    o AIM: use true log-P extrapolation for near surface temp (= as in
90        F.Molteni paper) ; update aim.5l_cs output.
91    o New variable in PARM03 for more flexible pickups
92    o somewhat cleaned package initialisation sequence for
93      ctrl/ cost/ ecco/ in packages_... routines
94    
95    checkpoint50g_post
96    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
97      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
98      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
99        made the default because of faster convergence than ADI
100    
101    checkpoint50f_post
102    o exf totally restructured
103      - replaced all exf_set_ routines by one generic exf_set_gen.F
104        and made sure it's still differentiable
105      - split exf_getffields.F into new exf_bulkformulae.F
106      - exf_inscal_/exf_outscal_ suffixes consistent with field names
107      - updated adjoint/makefile and relevant verif. accordingly
108    
109    checkpoint50f_pre
110     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
111          + change Evap over land. (update aim.5l_cs output)
112     o added missing .cvsignores and made uniform across expts
113     o changed configuration of tidal_basin_2d expt
114     o added pkg/debug functions for tracing code in fatal crashes
115     o tidied pkg/monitor to use MONITOR_OPTIONS.h
116     o new fn in pkg/monitor to stop model if solution grows too big
117     o removed lots of single quotes from comments
118    
119    checkpoint50e_post
120    o make KPP work with PTRACERS
121     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
122       nearly a copy of kpp_transport_s
123     - there is no analogue to SurfaceTendencyS, so I have to use
124       gPtr(of the surface layer) instead
125    o add a new platform SunFire+mpi (SunFire 15000) to genmake
126    checkpoint50e_pre
127    
128    checkpoint50d_post
129    o change kpp output from multiple-record state files to single-record state
130      files analogous to write_state.F
131    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
132      analogous to the cg2d-related output.
133    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
134      so that writing to internal file fn (with length 512) fails.
135    checkpoint50d_pre
136    
137    checkpoint50c_post
138    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
139    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
140    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
141    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
142    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
143    
144    checkpoint50c_pre
145    Merging from release1_p13:
146    o bug fix for pkg/seaice dynamic solver
147    o Added SEAICE_initialHEFF to pkg/seaice
148    
149    checkpoint50b_post
150    o store u*,v* in gU,V instead of in guNm1,gvNm1
151    o in order to put the momForcing out of the Adams-Bashforth:
152      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
153      to timestep.F
154    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
155    o re-generate output for highly sensitive test-exp:
156       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
157    
158    checkpoint50b_pre
159    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
160    o corrected CPP option mismatch in exf_Bulk... functions for case
161      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
162    
163    checkpoint50a_post
164    o Bug fix for merging between c50 and KPP.
165      ikey was passed from thermodynamics to kpp_calc via
166      common block rather than being recomputed in kpp_calc,
167      in contradiction with new key itdkey.
168      New key ikppkey created, and tamc.h headers updated.
169    
170    checkpoint50
171    - 2nd step of merge with ecco-branch:
172      merge changes in ecco-branch back into main trunk
173    - bug fix in find_alpha
174    - more storing in gmredi_calc_tensor.F, kpp_routines.F
175    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
176    - merged some sliced AD support routines
177    
178    checkpoint49
179    merged from ecco-branch:
180    o exf:
181      - Enable initialisation of forcing fields to constant
182        (runtime) values.
183      - in exf_getffields.F
184        Reduce i-/j-loop to interior domain, discarding overlaps.
185        That also fixes wrong TAF-key computations for key_1, key_2
186        with bulf formulae.
187      - exf_init.F modify #ifdef for exf_init_evap
188      - exf_getffieldrec.F, ctrl_getrec.F
189        The following INT-usages are not safe:
190          fldsecs  = int(fldsecs/fldperiod)*fldperiod
191          fldcount = int(fldsecs/fldperiod) + 1
192        and were modified.
193    o autodiff: checkpoint_lev...
194      - updated storing for bulk formulae (some arrays were missing)
195      - added state for seaice package
196      - synchronized with main branch
197    o DIVA:
198      Modif.s in
199      - the_main_loop.F
200      - the_model_main.F
201      and added cost_final_restore.F cost_final_store.F
202      o With these changes, it is possible to fully separate
203        the first forward run to compute the cost function (mdthe_main_loop)
204        and adjoint runs over individual DIVA intervals (adthe_main_loop)
205        into separate model executions.
206        This enables better tuning of DIVA to given queue sizes.
207      o Loss of cost function value in consecutive DIVA runs is
208        fixed by storing to 'costfinal' file.
209      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
210        beginning/end of adjoint integration is accounted for.
211      The current changes apply to TAF-1.4.26.
212      TAF has one remaining bug, requiring one manual change
213      (see MITgcm manual).
214    o cal: synchronized between MAIN and ecco-branch
215    
216    checkpoint48i_post
217    o Changes to restore differentiability of code w.r.t. previous tag
218      (mostly adding new routines to make list and replacing
219      pressure by totPhiHyd).
220    o Updated and merged grdchk package
221      - has both ADM and TLM checks
222      - works for single- and multi-proc.
223      - output cleaned
224      - worked successfully for parallel DIVA
225    o genmake:
226      - Adding -platform=SP4
227      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
228    o Modif. for DIVA:
229      ctrl_unpack should not be called in intermediate DIVA interval.
230      (similar thing would apply for active files such as
231      tbar, sbar, psbar, which should not be reinitialised;
232      only relevant for ecco-branch)
233    
234    checkpoint48h_post
235    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
236    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
237    o Added SEAICE_initialHEFF to pkg/seaice
238    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
239    
240    checkpoint48g_post
241    --- EOS:
242    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
243      store total Potential in totPhyHyd for diagnostics & EOS.
244    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
245    --- Pressure/geopotential gradient:
246    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
247    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
248      ( changes results of global_ocean_pressure )
249    o NLFS + z-coord.: add eta*Rho' contribution.
250    o accurate phiHyd when using interface-W at the middle between 2 centers
251     ( changes results of ideal_2D_oce )
252    o includes r* 2nd term in potential gradient.
253    
254    checkpoint48f_post
255    Merging from release1_p12:
256    o Modifications for using pkg/exf with pkg/seaice
257      - improved description of the various forcing configurations
258      - added basic radiation bulk formulae to pkg/exf
259      - units/sign fix for evap computation in exf_getffields.F
260      - updated verification/global_with_exf/results/output.txt
261    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
262      (SBO) core products, including oceanic mass, center-of-mass,
263      angular, and bottom pressure (see pkg/sbo/README.sbo).
264    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
265      to avoid negative values in shallow regions.
266      - updated verification/natl_box/results/output.txt
267      - updated verification/lab_sea/results/output.txt
268    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
269    o Added useSingleCpuIO option (see PARAMS.h).
270    o Updated useSingleCpuIO option in mdsio_writefield.F to
271      work with multi-field files, e.g., for single-file pickup.
272    o pkg/seaice:
273      - bug fix in growth.F: QNET for no shortwave case
274      - added HeffFile for specifying initial sea-ice thickness
275      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
276    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
277      kpp_transport_t.F, forward_step.F, and the_main_loop.F
278    o pkg/seaice:
279      - adjoint-friendly modifications
280      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
281    
282    checkpoint48e_post
283    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
284    o dynamics: change definition of computational domain & adapt mom_fluxform
285      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
286    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
287        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
288        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
289        global_ocean.90x40x15 global_with_exf global_ocean_pressure
290        inverted_barometer solid-body.cs-32x32x1
291      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
292    
293    checkpoint48d_post
294    o in preparation for r*:
295     a) use pre-computed gradient of hydrostatic potential:
296        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
297     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
298        => affects results of glob_oce_pressure (different truncation error)  
299      update output.txt of ideal_2D_oce & global_ocean_pressure
300    
301    checkpoint48d_pre
302    o in preparation for r*:
303      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
304      pass the 2 comp. of the grad. as arguments to momentum S/R.
305      but for the moment, only used if it does not change the results.
306    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
307    
308    checkpoint48c_post
309    Modifications in treatment of initial flux forcing controls
310    to avoid extra storing of flux fields.
311    
312    checkpoint48c_pre
313    o Added tidal_basin_2d experiment (currently 1D!)
314    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
315    
316    checkpoint48b_post
317    o r* coordinate added in #ifdef NONLIN_FRSURF block.
318     (modification to pressure gradient not yet implemented)
319    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
320      (for U & V) that are used for vertical advection of momentum.
321    
322    checkpoint48a_post
323    o In preparation for r*, use temp. array to compute vertical transport
324       in flux-form momentum pkg. => change results of few test-exp.
325      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
326                        lab_sea, natl_box & plume_on_slope
327    
328    checkpoint48
329    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
330    
331    checkpoint47j_post
332    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
333    o moved adexch from forward_step to addummy_in_stepping
334    o added exch in ctrl_map_...
335    o aveFreq.=0. at end of cost_final to avoid overwrite in
336      reverse checkpointing loop
337    o Yet more changes in gmredi:
338      * adgmredi_calc_tensor
339        avoiding all recomputation of gmredi_slope_limit
340      * adgmredi_x/y/rtransport
341        added flag for excessive storing to avoid recomp. of
342        u/v/rtans, dTdx/y/z
343        -> this is not really necessary and very memory-consuming
344      * adgmredi_slope_psi:
345        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
346      * gmredi_slope_limit
347        re-activated full calculation of taperfct for case 'ac02'
348    o updating verification/ adjoints of carbon, global_ocean.90x40x15
349    
350    checkpoint47i_post
351    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
352    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
353      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
354    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
355    o gmredi: fix few bugs.
356    
357    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
358    This will be a good checkpoint to plug into the ecco-branch.
359    o few modif.'s to get latest version adjointed
360      (mainly kick out code in ini_linear_phisurf)
361    o modif's to run adjoint with exactConserv
362    o case GM_BOLUS_ADVEC should be cleaned
363      S/R gmredi_slope_psi should be cleaned
364    o verification/carbon now has exactConserv=.TRUE.
365    
366    checkpoint47g_post
367    o time-average AIM output: becomes independent from statvars time-average
368      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
369    o After TAF bug fix:
370      Tested adjoint of gmredi package.
371      Tests were done with checkpoint47 rather than with latest
372      checkpoint47f_post since the latter is broken for the adjoint
373      verification/carbon/ contains both ADM and TLM gradient checks.
374    Here they are, before they get changed/lost/stolen.
375    Mostly modif.'s to fix numerical sensitivities.
376    Gradient checks OK for
377    - GM_taper_scheme:
378      * clipping
379      * ac02
380      * linear
381      * glw91
382      * dm95
383      * ldd97
384    - GMREDI_OPTIONS:
385      * GM_VISBECK_VARIABLE_K
386      * GM_NON_UNITY_DIAGONAL
387      * GM_EXTRA_DIAGONAL
388      * GM_BOLUS_ADVEC
389    in conjunction with data.gmredi parameters to be checked in
390    in a few minutes under verification/carbon/code/
391    
392    checkpoint47f_post
393    Merging from release1_p10:
394    o modifications for using pkg/exf with pkg/seaice
395      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
396        and SEAICE_EXTERNAL_FLUXES
397      - pkg/exf CPP options EXF_READ_EVAP and
398        EXF_NO_BULK_COMPUTATIONS
399      - usage examples are Experiments 8 and 9 in
400        verification/lab_sea/README
401      - verification/lab_sea default experiment now uses
402        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
403    
404    checkpoint47e_post
405    o created a tag prior to creating a branch
406    
407    checkpoint47d_post
408    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
409      at the bottom boundary had an erroneous half slip boundary condition
410    o added bottom drag and no slip boundary condition capabilities to
411      oceanic pressure coordinates code
412    o added new verification experiment global_ocean_pressure, this experiment is
413      also described in the tutorial section of the manual
414    checkpoint47d_pre
415    
416    checkpoint47c_post
417    o Added a verification experiment for a global cubed-sphere ocean run
418      -  verification/global_ocean.cubed32x32x30
419      -  uses pkg/therm_seaice and pkg/bulk_forcing
420    
421    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
422    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
423      when using P-coordinate; only implemented for atmospheric config.
424    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
425      NOTES: requires option NONLIN_FRSURF to be "#define".
426    o update advect_xz/results/output.txt (left from checkpoint44g_post)
427    
428    checkpoint47b_post
429    Merging from release1_p9:
430    o pkg/seaice
431      - removed GOTO's and added taf directives
432      - double precision constants to reduce the g77 (Linux)
433        to F77 (SGI) differences reported in release1_p8
434    o tools/genmake
435      - added SGI options
436    o verification/testscript
437      - updated to that of checkpoint47a_post
438    o verification/global_ocean.90x40x15/input/eedata
439      - modified for SGI f77 compatibility
440    o verification/lab_sea
441      - added description of sea-ice model
442      - added missing matlab routines
443      - added test of thermodynamics parallelization
444    
445    checkpoint47a_post
446    o new pkg: aim_v23
447     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
448       for now, keep the same surface forcing as before.
449     - Part-Cell implemented into AIM; check that Heat & Water are conserved
450     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
451     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
452    o add diagnostic of surface correction term in monitor output
453    
454    o bulk_force and therm_seaice
455    - Two packages:  bulk_force (Bulk forcing)
456      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
457    - Earlier integration from Stephaine Dutkiewicz
458      and Patrick Heimbach.
459    - Two ifdef statements for compile time,
460       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
461    
462    checkpoint47
463    differentiable version of checkpoint46n_post
464    o bug fix in quasihydrostaticterms
465    o * "clean" adjoint code (in terms of extensive recomputations)
466        can now be obtained for all GMREDI options (i.e. for
467        - GM_VISBECK_VARIABLE_K
468        - GM_NON_UNITY_DIAGONAL
469        - GM_EXTRA_DIAGONAL
470        - GM_BOLUS_ADVEC )
471      * However, wrong gradient check problem remains unsolved.
472      * New CPP options have been introduced for different
473        tapering schemes
474    o external_fields_load now part of differentiation list
475    o pressure needs multiple storing;
476      would be nice to have store_pressure at beginning or
477      end of forward_step, e.g. by having phiHyd global (5-dim.)
478      (NB: pressure is needed for certain cases in find_rho,
479      which is also invoked through convective_adjustment).
480    o recomputations in find_rho for cases
481     'JMD95'/'UNESCO' or 'MDJWF' are OK.
482    o #define ATMOSPHERIC_LOADING should be differentiable
483    o ini_forcing shifted to begining of initialise_varia
484    o Incorporating QNVS line search routines into MITgcm
485      (this is separate code, and therefore not under pkg)
486      lsopt/, optim/
487    o Updated verification/carbon/
488      - #define GM_VISBECK_VARIABLE_K
489      - GM_taper_scheme    = 'ldd97'    
490    
491    checkpoint46n_post
492    Merging from release1_p8:
493    o verification/natl_box:
494      updating new external_fields_load routine
495    o New package: pkg/seaice
496      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
497      The sea-ice code is based on Hibler (1979-1980).
498      Two sea-ice dynamic solvers, ADI and LSR, are included.
499      In addition to computing prognostic sea-ice variables and diagnosing
500      the forcing/external data fields that drive the ocean model,
501      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
502      The implied surface heat flux is then stored in variable
503      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
504      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
505      non-local transport term.  Because this call precedes model
506      thermodynamics, temperature under sea-ice may not be "exactly" at
507      the freezing point by the time theta is dumped or time-averaged.
508      N.B.: fairly large differences in accuracy occur across
509            different platforms/compilers; comparison between
510            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
511            generated output gives:
512       T           S           U           V
513      C D M    c        m  s        m  s        m  s        m  s
514      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
515      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
516      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
517    
518      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
519    o GAD:
520      - generated new common blocks to account for call of
521        same gad routines with differing traceridentities
522        (needed to modify tracerIdentity indices in GAD.h)
523      - generated separate common blocks for case useCubedSphereExchange
524        (Department of Futurology)
525      - parameter lists to gmredi_?transport: added tracerIdentity
526      - added new key indices to tamc.h
527    o external_fields_load:
528      - added this routine to TAF list
529      - needed to make some common blocks global and additional storing
530        along the same lines as exf package (checkpoint_lev?_directives.h)
531    o exf:
532      updated external forcing package
533      - bug fixes carried over from ecco-branch
534        (missing OBCS_OPTIONS.h in two routines)
535      - enable easy to use "no forcing".
536      - added exf I/O for atmospheric loading
537      - added exf I/O for runoff data
538      - transfered scaling between exf <-> MITgcm to exf namelist
539    o Adding new verification experiment global_with_exf.
540      This verification experiment is almost identical to the
541      global_ocean.90x40x15 experiment, except that it uses
542      the exf (and cal) package instead of the
543      external_fields_load routine (cf README file).
544    
545    checkpoint46m_post
546    o modified testscript to return -- when there are no lines of "%MON" output
547    o added new flag "quasiHydrostatic" for QH mode
548      and new routine quasihydrostaticterms()
549    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
550      New routine: mom_u_coriolis_nh()
551    o fixed sign of non-hydrostatic metric terms in u and v equations.
552      Depend on correct sign of gravitySign.
553    o added work.pc* to .cvsignore in aim directories using ifc
554    o introduced flag for controllin non-hydrostatic metric terms
555    o removed gravitySign from PARM04
556    o switched to g77/ifc from pgf77 in aim experiments
557    
558    checkpoint46l_post
559    o made convective adjustment work with pressure coordinates:
560     - changed the direction of k-loop in convective_adjustment.F for the
561       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
562     - adjusted the reference pressure k-index in convective_adjustment.F
563     - adjusted the convection condition in convect.F (in analogy to
564       calc_ivdc.F)
565     - convective_adjustment no longer computes anything on the halos
566     - removed the warnings about negative salinity from find_rho.F and
567       find_alpha.F; instead the new routine look_for_neg_salinity, called
568       at the beginning of find_rho, find_alpha, and find_beta, does a
569       check of the entire slice, if CPP-option
570       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
571    checkpoint46l_pre
572    
573    checkpoint46k_post
574    o fixed the verification/global_ocean.90x40x15 experiment:
575     - new bathymetry (the world according to A., JMC, and M.)
576     - new initial fields and forcing fields (*.bin files)
577     - new POLY3.COEFFS (for the next release one should switch to a full
578       equation of state: JMD95P or MDJWF)
579     - fixed several errors and redundancies in the data file
580     - experiment uses looped cells
581     - added matlab directory with diagnostic scripts for plotting of output
582    
583    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
584     - read AIM physics parameters from a file (data.aimphys)
585     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
586    
587    checkpoint46j_post
588    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
589    o move wVel computation at the end of the time step, in S/R integr_continuity
590    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
591    o update timeave pkg for wVel diagnostic.
592    checkpoint46j_pre
593    
594    checkpoint46i_post
595    o Clean up AIM package (and keep the results unchanged):
596      include CPP_OPTION and use IMPLICT NONE in all routines ;
597      declare all the variables _RL ; use _d 0 for all numerical constants.
598      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
599    
600    checkpoint46h_post
601    o cleaned up the use of rhoNil and rhoConst.
602      - rhoNil should only appear in the LINEAR equation of state, everywhere
603        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
604        and the dynamical equations are all divided by rhoConst
605    o introduced new parameter rhoConstFresh, a reference density of fresh
606      water, to remove the fresh water flux's dependence on rhoNil. The default
607      value is 999.8 kg/m^3
608    o cleanup up external_forcing.F and external_forcing_surf.F
609      - can now be used by both OCEANIC and OCEANICP
610    checkpoint46h_pre
611    
612     Added code to convert surface volume flux (fresh water) into
613     a mass flux when using P coordinates in the ocean (OCEANICP).
614     Note: It assumes you have set rho0=rhoConst=density of fresh water.
615    
616    checkpoint46g_post
617    o Include a new diagnostic variable phiHydLow for the ocean model
618      - in z-coordinates, it is the bottom pressure anomaly
619      - in p-coordinates, it is the sea surface elevation
620      - in both cases, these variable have global drift, reflecting the mass
621        drift in z-coordinates and the volume drift in p-coordinates
622      - included time averaging for phiHydLow, be aware of the drift!
623    o depth-dependent computation of Bo_surf for pressure coordinates
624      in the ocean (buoyancyRelation='OCEANICP')
625      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
626        Theta, Salinity, and Pressure in the parameter list. This routine is
627        presently contained in find_rho.F. This routine does not give the
628        correct density for 'POLY3', which would be a z-dependent reference
629        density.
630    o cleaned up find_rho
631      - removed obsolete 'eqn' from the parameter list.
632    o added two new verification experiments: gop and goz
633      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
634    checkpoint46g_pre
635    
636    checkpoint46f_post
637    o Enable tangent linear (forward mode) gradient checks:
638      - extended active file handling to g_... files
639      - added TANGENT_SIMULATION to theSimulationMode
640      - extended grdchk package accordingly
641    o added tangent linear setup in verification/carbon/code_ftl
642    o added adjoint setup in verification/front_relax/code_ad
643    
644    checkpoint46e_post
645    o Added new equation of state -> MDJWF
646      - EOS of McDougall et al., 2002, JAOT, submitted
647      - caveat: the equation of state is only valid for a smaller (more
648        realistic?) range of values than JMD95P/Z and UNESCO
649      - added masks to the calculation of pressure in store_pressure
650      - added more check values for density in check_eos (ini_eos.F), some of
651        the old check values are out of the range of the MDJWF-eos, so don't
652        expect perfect matches for those
653    checkpoint46e_pre
654    
655    checkpoint46d_post
656    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
657      'OCEANICP', also initialised field pressure correctly in ini_eos in the
658      case of pressure coordinates. eosType='JMD95Z' in
659      combination with buoyancyRelation='OCEANICP' now causes an error.
660    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
661      in find_alpha/beta.
662    checkpoint46d_pre
663    
664    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
665      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
666    
667    checkpoint46c_post
668    o Changes necessary for ocean in p-coordinates
669     -  Added new buoyancy relation = 'OCEANICP'
670     -  Added new parameters = gravitySign (this used to be contained inside
671        the factor dRdZ which I added when we first switched to R coordinates).
672     X GM/Redi is not compatible (yet)
673     X bottom drag and no-slip need to be debugged.
674    checkpoint46c_pre
675    
676    checkpoint46b_post
677    o Added new equation of state -> JMD95Z and JMD95P
678      - EOS of Jackett and McDougall, 1995, JAOT
679      - moved all EOS parameters into EOS.h
680      - new routines ini_eos.F, store_pressure.F
681    o Added UNESCO EOS, but not recommended because it requires
682      in-situ temperature (see JMD95)
683    o Modified formatting for knudsen2.f in utils/knudsen2 and added
684      unesco.f to be used with POLY3
685    checkpoint46b_pre
686    
687    checkpoint46a_post
688    o Added (atmospheric) pressure loading
689      - new field in FFIELDS.h, etc...
690      - new cpp flag ATMOSPHERIC_LOADING
691    o Changed hFacC to _hFacC in calc_phi_hyd.F
692    o Added SHORTWAVE_HEATING to some files for consistency
693    checkpoint46a_pre
694    
695    checkpoint46
696    further merges from release1_p5
697    o new ctrl package
698      - adopted from ECCO environment to enable optimization
699      - added Eliassen Palm fluxes to controls
700    o added Eliassen Palm flux controls to gradient check package
701    o cost package
702      - Compatible with new ctrl package
703      - added Eliassen Palm cost hooks
704      - modif's of existing cost functions
705    o Adjoint-related bug fixes in kpp:
706      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
707      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
708    o autodiff package
709      - flow directives:
710        + new for S/R do_the_model_io
711        + enhanced for S/R checkpoint
712        + new gmredi.flow
713      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
714        disable adcommon.h/g_common.h by default.
715      - fixed problem for adjoint of global_max
716    o modified verification/carbon/
717    o New setup for adjoint of global_ocean
718    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
719    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
720    o incorporated hooks for sponge layer code (external_forcing.F)
721    
722    checkpoint45d_post
723    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
724    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
725      (affects plume_on_slope "cg2d" output)
726    o add new parameter deltaTfreesurf for free-surface time stepping
727    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
728    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
729    o change phiMin in exp1 (to agree with documentation)
730    o add new flags:
731     - T,S forcing inside/outside Adams-Bashforth
732     - turn off temp,salt advection and/or forcing
733     - for each tracer, define internal flag for multiDimAdvection & A-B
734    o monitor: change definition of KE to check conservation of Energy
735    
736    checkpoint45c_post
737    o Removed f90 comments ("!")
738    o Modified initialisations to enable exf package for MITgcm
739      (without invoking ECCO_PACKAGE).
740    o modifications to gradient check package (Martin Losch)
741      - enable centered differences
742      - modified format of standard output
743    
744    checkpoint45b_post
745    o cleaned exchange calls in cg2d
746    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
747    o included CPP option SINGLE_LAYER_MODE in thermodynamics
748      to configure barotropic setup (Martin Losch)
749    o moved some initialisations within bi,bj loop in dynamics
750      (TAF flow dependency)
751    o in initialise_varia, moved call packages_init_variables
752      before convective_adjustment_init
753      (corresponding adjustment of TAF tape initialisation).
754    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
755    
756    checkpoint45a_post
757    o compute Rho over the whole domain (extend iMin,jMin indices)
758    o specific exchange for X-slice domain (case Ny=1)
759    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
760    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
761    
762    checkpoint44h_post = checkpoint45
763    o Fix to restore differentiability:
764      place at which packages_init_variables is called in
765      initialise_varia is crucial for reverse control flow.
766    o modifications in GMRedi to enable stable adjoint
767      (corresponding modif's in thermodynamics, dynamics)
768    o added missing hook for sponge layer code in external_forcing
769    o modified test cost functions
770    o storing in gad_advection (plus removal of write(0,*)!
771    o missing headers TR1.h added in convective_adjustment routines
772    o errorMessageUnit set non-equal zero in eeboot
773      (conflict on some platforms, e.g. IBM SP3)
774    o modified carbon verif.
775    
776    checkpoint44h_pre
777    o vertical grid option: allow to put the Interface at the middle between
778      2 cell-centers ; replace delZ in pkg/kpp by drF.
779    o GM Advective form: Tracers are advected using the residual transport (=
780      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
781    
782    checkpoint44g_post
783    o fix surface correction term in multiDimAdvection (affects plume_on_slope
784      results) ; ifdef missing in thermodynamics.F
785    
786    checkpoint44f_pre,checkpoint44f_post
787    o added PTRACERS package
788      This allows an arbitrary number of passive tracers to be integrated
789      forward simultaneously with the dynamicaly model.
790      + Implemented so far:
791        - basic forward algorithm (time-stepping, advection, diffusion, convection)
792        - I/O and checkpointing
793        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
794      + Not implemented so far:
795        - KPP
796        - OBCS
797      + No specific example supplied (yet) but global_ocean.90x40x15 has the
798        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
799        line in data.pkg.
800      + This package is disabled by default since it increases storage.
801    
802    
803    o testscript: added -cleanup option
804    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
805                 b) enable to filter 2D fields.
806    
807    checkpoint44e_pre,post
808    o re-wrote convective adjustment to use pre-calculated weights
809      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
810      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
811      Original calls to convect() still in place.
812    
813    chkpt44d_pre,post
814    o added missing EXCLUDE_MONITOR flags
815    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
816      (incompatible typ in MIN/MAX expressions caused problems
817      on IBM SP3)
818    o in genmake added variable MAKEDEPEND
819      plus resetting for case SunOS
820    o added timer_stats.c routine for IBM SP3
821    o removed variables in dynamics
822    !!! I forgot to create tag chkpt44d_pre !!!
823    !!! But chkpt44d_pre = chkpt44c_post    !!!
824    
825    o real fresh water flux implemented with non-linear free-surface.
826    
827    chkpt44c_pre,post
828    o few fix (mask in shap_s2, EmPmR in external_field_load,
829      USE_NATURAL_BCS in solve_for_P);
830    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
831    
832    checkpoint44b_pre/_post
833    o merge of relevant stuff from the ecco-branch:
834      - genmake: removed $S64 overwrite for case SunOS
835      - pkg/exf: update and corrections for field swapping and obcs
836      - pkg/ecco: parameter lists for the_model_main, the_main_loop
837                  harmonized between ECCO and MITgcm
838      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
839                      updated checkpointing_lev... lists for obcs
840      - model/src: minor changes in forward_step, plot_field
841                   added directive for divided adjoint in the_main_loop
842      - pkg/mdsio: added mdsio_gl_slice
843    
844    o check parameters & config (chkpt44a_pre,post)
845    o OBC and NonLin_FrSurf.
846    
847    checkpoint44
848    o fix bug in mom_vi_del2uv
849    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
850    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
851    o update AIM experiments (NCEP input files)
852    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
853    o added some stuff for AD
854    
855    checkpoint43
856    o added two new advection tests
857    o added global 4x4 degree ocean test
858    o added test of H&S94 with free surface on cube
859    o some final mods for gradient check, adjoint,...
860    
861    checkpoint42
862      Fixed AD-related problems:
863    o Store directives up-to-date with re-arranged Adams-Bashforth
864      (mainly thermodynamics.F)
865    o New store directives for multi-dim. advection schemes
866      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
867      * new common block and key passkey
868      (mainly gad_advection.F)
869    o Modified store directives for split of dynamics/thermodynamics
870      for the case ALLOW_KPP
871    o Cleaned argument list for timestep_tracer.F
872    
873    checkpoint41
874    o re-formatted/added comments in prologues of key subroutines
875      to work with protex
876    
877    checkpoint40
878    o moved calc_gs, calc_gt and calc_tr1 back to model/src
879    o added FLT (floats) package from Arne along with demo. experiment
880    o re-arranged Adams-Bashforth scheme for tracers to allow easier
881      implementation of forward-in-time forcing terms
882    o more mods for non-linear free-surface including new variable
883    o modified multi-dim method to work on cube
884    o bug fix in KPP (from DM)
885    
886    checkpoint40pre9
887    o added DST advection schemes
888    o fix MPI bug on SGI's
889    o modifications for non-linear free-surface
890    o fixed conditionals for fixed flow/passive tracer only mode
891    o added tension/strain form of stress tensor
892    o changes to commenting of arguments for TAF/TAMC
893    o added/updated many matlab scripts
894    o added multi-dimensional advection method for tracers
895      
896    checkpoint40pre8
897    o new package rw/
898      Added method for dumping intermediate local arrays:
899      mdsio_writetile - same as mdsio_writefield except works from inside
900                        bi,bj loop
901      mdsio_writelocal - same as mdsio_writetile except works for local
902                         arrays
903      write_local_r? - higher-level wrapper for mdsio_writelocal
904      Controlled by diagFreq. Defaults to zero (ie. no dumps)
905      Example given at end of mom_vecinv.F that dumps some local arrays.
906    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
907      control flux-form versus vector invariant code.
908      Switch is runtime flag vectorInvariantMomentum (defaults to false)
909      or genmake -DISABLE ...
910    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
911      (additional storing is now needed for case vecinv;
912      currently nothing implemented to switch this storing off
913      in case fluxform is used since no CPP flag available).
914    
915    checkpoint40pre7
916    o bug fix in dynamics.F
917      calc_viscosity called before k=1,Nr loop.
918    o added some #ifdef's ALLOW_PASSIVE_TRACER
919    o cleaned initialisations in ctrl_map_ini
920      related to TAF
921    
922    checkpoint40pre6
923    o split dynamics into thermodynamics & dynamics
924    o corresponding split of calc_diffusivity into
925      calc_diffusivity, calc_viscosity
926      (kpp_calc_diff, kpp_calc_visc).
927    o Added diffkr, kapgm to control variables
928    o bug fix in gmredi_slope_limit for ldd97
929    
930    checkpoint40pre5
931    o proper initialization of Adams-Bashforth time stepping
932      + uses forward step for very first step of model (iter=0)
933    o re-generated *all* output since almost all output is modified by this
934      change (sorry but we've been putting this one off for about 2 years)
935      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
936        *not* regenerated since they are already out of date and I don't
937        want to create the impression that they are suddenly working.
938    o removed KAP stuff for DEC's
939    o modified/added many .cvsignore files in */code and */input
940    o added new expt "solid-body.cs-32x32x1"
941      + this uses an alternative form of ini_curvilinear_grid.F which
942        is not necessarily any better than the current one...
943    
944    checkpoint40pre4
945    o added re-initialisations of utrans,vtrans,rtrans in
946      calc_common_factors which are crucial for TAF.
947    o extended iMin,jMin range for calc_common_factors,
948      calc_diffusivity
949    o added option ALLOW_PASSIVE_TRACER
950    o a few minor updates and fixes
951    
952    checkpoint40pre3
953    o created calc_gtr1.F for gad package
954    o split the_main_loop and re-introduced forward_step
955    o some recomputations of nIter0 for TAMC
956    
957    checkpoint40pre2
958    o Updated to latest branch of AJA, JMC
959    o Added gradient check package
960    o Added routines for passive tracer handling
961    o Added carbon sequestration sensitivity experiment
962    
963    checkpoint39
964     o Modifications and fixes to support TAMC
965       (mainly missing or wrong directives)
966     o Corrected common blocks when fooling TAMC to produce adjoint I/O
967       in addummy_in_stepping
968     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
969     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
970     o Included following packages:
971       cal: calendar
972       exf: external forcing
973       ecco: essential routines to control use of cal, exf
974             (NB: this is not the full ECCO environment)
975     o disabled some packages by default in genmake
976    
977    checkpoint38
978     o see notes_c37_adj.txt
979     o corrected wrong layer index in external_forcing_t
980     o replaced the_main_loop/forward_step by the_main_loop
981     o removed forceoutput from write_state
982       (replaced criteria for initial/final state)
983     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
984    
985    checkpoint37
986     o mdsio.F routine split and packaged in pkg/mdsio
987       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
988        used unless genmake -disable=mdsio)
989     o allow a more precise surface-geopotential gradient for the atmosphere
990       taking into account the change in space of Alpha (=1/rho) at the surface.
991     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
992       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
993     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
994       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
995       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
996     o Time-Average diagnostics defined as a pseudo package "timeave".
997     o pickup files : old pickup (before c35) did not work with new code (c35
998       and after) unless activating 2 commented lines in initialise-varia.
999     o Non-Hydrostatic pickup file Pb fixed.
1000     o bug with Rigid-lid version (since c35) fixed.  
1001    
1002    checkpoint36
1003     o implement Crank-Nickelson barotropic time-stepping
1004     o recover Time-Average diagnostics
1005     o fix Pb in checkpoint (PR#19)
1006     o AIM become a standard package ; clean unused CPP_kees
1007    
1008    checkpoint35
1009     o subtantial rewrite of dynamics.f
1010     o allows staggered time-stepping
1011     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1012     o added bottom drag (linear + quadratic)
1013    
1014    checkpoint34
1015     o Modified exchange routines for correct reverse simulation.
1016     o Added verification output to comply with bug fix in impldiff.F
1017       as of c33 (exp2, natl_box).
1018     o Corrected store directives in dynamics.F
1019     o Corrected array boundaries in impldiff.F
1020     o Corrected array dimensions in gmredi.
1021       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1022     o Added routine GLOBAL_SUM_INT to global_sum.F
1023     o Added mdsio_gl.F for ECCO purposes.
1024    
1025    checkpoint33
1026     o Fixed bug in lower BC in impldiff.F
1027     o Fixed confusion about units of forcing arrays in FFIELDS.h
1028       namely Fu,Fv,Qnet,Qsw,EmPmR:
1029       - Removed verification/natl_box/code/external_fields_scale.F
1030         (did not differ from that in model/src)
1031       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1032         (see FFIELDS.h for description)
1033       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1034         kpp_calc.F and kpp_transport_t.F
1035       - Removed model/src/external_fields_scale.F and calls to it
1036       - verification/natl_box uses flux data with "atmospheric" sign so
1037         a special version of external_fields_load.F is used to
1038         change the data as it's read in. This way, the arrays
1039         have the right units and signs at all times tha a user could
1040         possibly use them.
1041     o Corrected genmake to delete a temporary file during configuration
1042    
1043    checkpoint32
1044     o Scaling of forcing fields moved from external_forcing.F to
1045       external_fields_scale.F, called directly after loading fields.
1046     o Surface relaxation terms added to surface tendency fields in
1047       extra subroutine.
1048     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1049       fields.
1050     o Changes in GMRedi to comply with packaging structure.
1051     o Modifications and bug fixes in KPP package.
1052     o Verification experiment for KPP added (verification/nat_box/)
1053    
1054    checkpoint31
1055     o Packages interface brought in line with defined standard
1056       -> new routines packages_...F
1057       -> changes in initialise_fixed.F, initialise_varia.F
1058       -> enables initialisation interface for ECCO package
1059     o Rescaling of external forcing fields immediately after read
1060       (removed from external_forcing.F)
1061       -> new: surface_fields_scale.F
1062       -> affects ini_foorcing.F, external_fields_load.F
1063     o Computation of surface tendencies before tendency updates.
1064       -> new: external_forcing_surf.F
1065     o Change of variable names useGMRedi, useKPP, useECCO
1066     o Further changes in dynamics.F, impldiff.F for TAMC
1067     o Tested for experiments 0, 2, 4.
1068       - not yet tested for GMRedi.
1069       - not yet tested for KPP.
1070    
1071    checkpoint30
1072     o Updates for OBCs
1073     o New experiment for test OBCs (internal_wave)
1074     o New output.txt in verification/exp4/results/
1075     o Updates for KPP: calculation of viscosity corrected, new variables
1076       kpp_dumpFreq and kpp_taveFreq
1077     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1078       and entry for T90 in genmake
1079    
1080    checkpoint29
1081     o packaged KPP and GM/Redi
1082    
1083    checkpoint28
1084     o Corrected initialization of hFacMin for difference vertical coordinates
1085     o Modified calculation of partial cell thickness to more robust algorithm
1086     o config_summary.F: replaced write_1D_... by write_0D_...
1087       read_write.F: added subroutines write_0D_...
1088     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1089       included some initialisations required for TAMC.
1090     o routine calc_isoslopes: modified sqrt computation to make it
1091       differentiable for zero argument.
1092     o routines dynamics, impldiff:
1093       included store directives and tape key computations required for TAMC.
1094     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1095    
1096    checkpoint27
1097     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1098       formulation works properly with variable resolution.
1099     o restructured the calling tree between the_model_main() and dynamics()
1100     o split initialise() into initialise_fixed() and initialise_varia()
1101     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1102       in new routine ini_psurf()
1103    
1104    checkpoint26
1105     o moved some #ifdef in optional routines to encompass everything
1106       except the argument declarations. This was using up some memory.
1107     o fixed macros like _ADT to work with both versions of Linux cpp
1108     o cleaned up some unused and uninitialized variables
1109       (helps when debugging with strict compile options)
1110     o split up CPP_EEOPTIONS.h into options and macros
1111       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1112     o patch for 2 processor JAM mode
1113    
1114    checkpoint25
1115     o updates for OBCs and NH
1116     o dramatically reduced memory usage
1117     o added "JAM" routines for use on Artic network
1118     o parameterization of convection by implicit vertical diffusion
1119     o added a diagnostic of convective index
1120     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1121       (this is was partly for OBCs and NH but also in anticipation of
1122        an explicit free-surface option)
1123     o initial state input files for U and V
1124    
1125    checkpoint24
1126     o Removed some spurious "REAL"s
1127     o Updated KPP to latest version from JPL
1128     o Added a COS(latitude) in horizontal viscosity
1129    
1130    checkpoint23
1131     o Added del^4 diffusion for salt and temperature
1132     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1133    
1134    checkpoint22
1135     o Made many small changes: implicit none, format(i5), etc...
1136     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1137    
1138    checkpoint21
1139     o Introduced new I/O package that supports direct-access records (mdsio.F)
1140     o Split-up mid-level I/O routines
1141     o Updated input data for experiments 0,1,2,4 and 5
1142     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1143    
1144    checkpoint20
1145     o Tidied up open-boundaries some more
1146     o Added non-hydrostatic code
1147     o Fixed some input data
1148     o Modified MPI start-up to work in "coupled" context.
1149    
1150    checkpoint19
1151     o Tidied up directory structure for verification experiments.
1152     o Added new code for open boundaries.
1153     o Corrected advective terms near boundaries.
1154     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1155     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1156     o Split default parameters out of ini_parms.F into set_defaults.F.
1157    
1158    checkpoint18
1159     o Further changes for optional code generation with
1160       CPP - ugh!
1161    
1162    checkpoint17
1163     o Beginning to incorporating modularity
1164       for supporting atmos. and ocean configs.
1165     o Small changes for TAMC complinace
1166     o New ultra simple test case. Barotropic box
1167       configuration "exp0".
1168    
1169    checkpoint16
1170     o Minor changes to exchange routines to support
1171       accumulation in reverse mode. Adjoint of an
1172       assignment is an addition.
1173     o Changes to support compilation by TAMC (LR(1)
1174       syntax) and by g77 under Linux ( 72 character
1175       limit ).
1176    
1177    checkpoint15
1178     Rewrote exchange routines to allow
1179     o General tile <-> tile connectivity.
1180     o TAMC reverse mode flag ( is this really needed? )
1181     o Variable width overlap and exchange region widths.
1182     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1183       shmput/shmget, VIA, SYSV shmem and every other cool
1184       communication method.
1185    
1186  checkpoint14  checkpoint14
1187   Consistent isomorphism chages made. These allow dynamical core   Consistent isomorphism chages made. These allow dynamical core
1188   to support both pressure and meters as a vertical coordinate.   to support both pressure and meters as a vertical coordinate.

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