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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.186 by edhill, Thu Oct 16 16:29:58 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    o added an include barrier to the default CPP_OPTIONS.h and
7      removed the #include "PACKAGES_CONFIG.h" from it
8    
9    checkpoint51j_post
10    o Added some AD-related initialisations in mom_vecinv/ mom_fluxform/
11    o adjusted some flow directives (dynamics, thermodynamics)
12    o added cubed-sphere case to test cost function
13    o heckpoint_lev?_directives.h now include
14      pkg-specific directives, whenever those are enabled.
15    o Moving pkg-specific flow directives to corresponding pkg
16      Moving pkg-specific differentiation list to corresponding pkg
17      Moving pkg-specific checkpoint-lev storing to corresponding pkg
18      ---> conventions are
19           - pkg_ad.flow
20           - pkg_ad_diff.list
21           - pkg_ad_check_lev?_dir.h
22    
23    checkpoint51i_post
24    o merge of the branch-genmake2
25      - knowingly breaks the older genmake
26      - automatic generation of all ALLOW_${PKG_NAME} defines
27      - new testreport supersedes older testscript
28    o large number of package inclusion and header cleanups
29    checkpoint51i_pre
30    
31    o new output for adjoin of global ocean vector invariant
32    o fix for checkpoint of thermodynamic seaice and bulk_force
33    o Steph gchem various cleanups
34    
35    checkpoint 51h_pre
36    o fixed some single quotes
37    o modify gchem pkg to be more versatile
38    o modifications to clean up dic pkg
39    o add pkg/cfc
40    
41    checkpoint51g_post
42    o provide links for ARPACK and ADM*TLM
43    o start removing verification/vero/
44    o update AD-related stuff
45      (in particular some IF-statements in model/src/ routines)
46    o adding to verification/global_ocean.90x40x15/ adjoint of
47      vector invariant setup
48    
49    checkpoint51f_post
50    o update advect_xz/output.txt (left from chekpoint50f_pre, ini_vel modif)
51    o Mods and bug fixes to pkg/cal, pkg/exf, etc., needed for computation
52      of tracer Green's fucntions for ocean inversion project.
53    
54    checkpoint51f_pre
55    o Added on-the-fly spatial interpolation capability
56        "USE_EXF_INTERPOLATION" to pkg/exf.
57      - This is a temporary Cartesian-grid hack until
58        the super-duper ESMF coupler becomes available.
59      - See verification/global_with_exf/README for usage example.
60      - Removed obsolete EXFwindOnBgrid and SEAICEwindOnCgrid
61        flags and modified pkg/seaice accordingly.
62    o Bug fix to pkg/ptracers, pkg/generic_advdiff/gad_calc_rhs.F,
63        and pkg/kpp/kpp_transport_ptr.F for dealing with tracer
64        non-local transport term.
65    
66    checkpoint51e_post
67    o pkg/mom_vecinv:
68      - changes related to hFac: use S/R from aim.5l_cs/code (coriolis & vort.advec)
69      - add time-ave diagnostic of vorticity advection.
70    o add diagnostic (instantaneous) of Shapiro Filter effect for T,S & UV.
71    o atmospheric geopotential: - include water vapor effect;
72                                - use p^kappa in p* scaling.
73    o land pkg: read initial state from files.
74    o AIM : add stratospheric drag in the upper level
75    
76    checkpoint51d_post
77    o change function ILNBLNK (=> last non-blank char.) to return zero
78      (instead of the string length) when the string. char is empty
79    o fix bug in dxV,dyU definition of cubed-sphere grid (ini_curvilinear_grid)
80    o modif's to restore TAMC compatibility
81      - avoid "_d" constructs in PARAMETER declarations
82      - avoid interrupting lines by comment lines
83    o Use cluster local disks for purely local I/O
84      vs. globally visible disks needed for ctrl stuff
85      (merged from ecco-branch)
86      - new active_file_loc... and mdsio_..._loc routines
87      - affected packages: autodiff, ctrl, grdchk, mdsio
88    
89    checkpoint51c_post
90    o introducing integer flag debugLevel
91      - debLevZero: suppress all output
92      - debLevA: standard
93      - debLevB: equivalent to current debugMode=.TRUE.
94    o introducing pathname variable mdsioLocalDir for mdsio
95      that can be specified at runtime
96      (relevant for cluster I/O to local disk)
97    `
98    >>>checkpoint51b_post
99    adjoint of ptracers
100    o disentangled ALLOW_PTRACERS using new ALLOW_GCHEM
101    o extended state in checkpoint_lev?, etc.
102    o alternative ctrl/cost with tr1 or ptracer
103    o new comlev1_bibj_ptracers
104    o new ptracers.flow
105    o made ptracers_forcing same as external_forcing_s
106    o added verification for adjoint with ptracers
107      - adm. grdchk fail so far
108      - tlm. grdchk OK
109      - checked tapelev/comlev recomputations: OK
110    <<<checkpoint51b_pre
111    
112    checkpoint51a_post
113    o added code for biogeochemistry package
114      - new pkgs: dic, gchem
115      - new subroutine in ptracers
116    o modify code for biogeo packages
117      - in model/src and pkg/ptracers
118    
119    checkpoint51
120    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
121      - autodiff, ctrl, exf, grdchk, seaice
122      kept separate packages
123      - cost, ecco, obcs
124    o updating verification/internal_wave, verification/lab_sea
125      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
126    
127    checkpoint50i_post
128    o Preparing next differentiable checkpoint and sync
129      of MAIN vs. ecco-branch
130      - 1st step: this one is differentiable
131      - 2nd step: next(! not this) checkpoint will have updated packages
132                  from ecco-branch)
133    
134    checkpoint50h_post
135    o new package "land": provide surface BC for AIM.
136    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
137    o AIM: use true log-P extrapolation for near surface temp (= as in
138        F.Molteni paper) ; update aim.5l_cs output.
139    o New variable in PARM03 for more flexible pickups
140    o somewhat cleaned package initialisation sequence for
141      ctrl/ cost/ ecco/ in packages_... routines
142    
143    checkpoint50g_post
144    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
145      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
146      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
147        made the default because of faster convergence than ADI
148    
149    checkpoint50f_post
150    o exf totally restructured
151      - replaced all exf_set_ routines by one generic exf_set_gen.F
152        and made sure it's still differentiable
153      - split exf_getffields.F into new exf_bulkformulae.F
154      - exf_inscal_/exf_outscal_ suffixes consistent with field names
155      - updated adjoint/makefile and relevant verif. accordingly
156    
157    checkpoint50f_pre
158     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
159          + change Evap over land. (update aim.5l_cs output)
160     o added missing .cvsignores and made uniform across expts
161     o changed configuration of tidal_basin_2d expt
162     o added pkg/debug functions for tracing code in fatal crashes
163     o tidied pkg/monitor to use MONITOR_OPTIONS.h
164     o new fn in pkg/monitor to stop model if solution grows too big
165     o removed lots of single quotes from comments
166    
167    checkpoint50e_post
168    o make KPP work with PTRACERS
169     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
170       nearly a copy of kpp_transport_s
171     - there is no analogue to SurfaceTendencyS, so I have to use
172       gPtr(of the surface layer) instead
173    o add a new platform SunFire+mpi (SunFire 15000) to genmake
174    checkpoint50e_pre
175    
176    checkpoint50d_post
177    o change kpp output from multiple-record state files to single-record state
178      files analogous to write_state.F
179    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
180      analogous to the cg2d-related output.
181    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
182      so that writing to internal file fn (with length 512) fails.
183    checkpoint50d_pre
184    
185    checkpoint50c_post
186    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
187    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
188    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
189    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
190    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
191    
192    checkpoint50c_pre
193    Merging from release1_p13:
194    o bug fix for pkg/seaice dynamic solver
195    o Added SEAICE_initialHEFF to pkg/seaice
196    
197    checkpoint50b_post
198    o store u*,v* in gU,V instead of in guNm1,gvNm1
199    o in order to put the momForcing out of the Adams-Bashforth:
200      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
201      to timestep.F
202    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
203    o re-generate output for highly sensitive test-exp:
204       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
205    
206    checkpoint50b_pre
207    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
208    o corrected CPP option mismatch in exf_Bulk... functions for case
209      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
210    
211    checkpoint50a_post
212    o Bug fix for merging between c50 and KPP.
213      ikey was passed from thermodynamics to kpp_calc via
214      common block rather than being recomputed in kpp_calc,
215      in contradiction with new key itdkey.
216      New key ikppkey created, and tamc.h headers updated.
217    
218    checkpoint50
219    - 2nd step of merge with ecco-branch:
220      merge changes in ecco-branch back into main trunk
221    - bug fix in find_alpha
222    - more storing in gmredi_calc_tensor.F, kpp_routines.F
223    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
224    - merged some sliced AD support routines
225    
226    checkpoint49
227    merged from ecco-branch:
228    o exf:
229      - Enable initialisation of forcing fields to constant
230        (runtime) values.
231      - in exf_getffields.F
232        Reduce i-/j-loop to interior domain, discarding overlaps.
233        That also fixes wrong TAF-key computations for key_1, key_2
234        with bulf formulae.
235      - exf_init.F modify #ifdef for exf_init_evap
236      - exf_getffieldrec.F, ctrl_getrec.F
237        The following INT-usages are not safe:
238          fldsecs  = int(fldsecs/fldperiod)*fldperiod
239          fldcount = int(fldsecs/fldperiod) + 1
240        and were modified.
241    o autodiff: checkpoint_lev...
242      - updated storing for bulk formulae (some arrays were missing)
243      - added state for seaice package
244      - synchronized with main branch
245    o DIVA:
246      Modif.s in
247      - the_main_loop.F
248      - the_model_main.F
249      and added cost_final_restore.F cost_final_store.F
250      o With these changes, it is possible to fully separate
251        the first forward run to compute the cost function (mdthe_main_loop)
252        and adjoint runs over individual DIVA intervals (adthe_main_loop)
253        into separate model executions.
254        This enables better tuning of DIVA to given queue sizes.
255      o Loss of cost function value in consecutive DIVA runs is
256        fixed by storing to 'costfinal' file.
257      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
258        beginning/end of adjoint integration is accounted for.
259      The current changes apply to TAF-1.4.26.
260      TAF has one remaining bug, requiring one manual change
261      (see MITgcm manual).
262    o cal: synchronized between MAIN and ecco-branch
263    
264    checkpoint48i_post
265    o Changes to restore differentiability of code w.r.t. previous tag
266      (mostly adding new routines to make list and replacing
267      pressure by totPhiHyd).
268    o Updated and merged grdchk package
269      - has both ADM and TLM checks
270      - works for single- and multi-proc.
271      - output cleaned
272      - worked successfully for parallel DIVA
273    o genmake:
274      - Adding -platform=SP4
275      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
276    o Modif. for DIVA:
277      ctrl_unpack should not be called in intermediate DIVA interval.
278      (similar thing would apply for active files such as
279      tbar, sbar, psbar, which should not be reinitialised;
280      only relevant for ecco-branch)
281    
282    checkpoint48h_post
283    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
284    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
285    o Added SEAICE_initialHEFF to pkg/seaice
286    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
287    
288    checkpoint48g_post
289    --- EOS:
290    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
291      store total Potential in totPhyHyd for diagnostics & EOS.
292    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
293    --- Pressure/geopotential gradient:
294    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
295    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
296      ( changes results of global_ocean_pressure )
297    o NLFS + z-coord.: add eta*Rho' contribution.
298    o accurate phiHyd when using interface-W at the middle between 2 centers
299     ( changes results of ideal_2D_oce )
300    o includes r* 2nd term in potential gradient.
301    
302    checkpoint48f_post
303    Merging from release1_p12:
304    o Modifications for using pkg/exf with pkg/seaice
305      - improved description of the various forcing configurations
306      - added basic radiation bulk formulae to pkg/exf
307      - units/sign fix for evap computation in exf_getffields.F
308      - updated verification/global_with_exf/results/output.txt
309    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
310      (SBO) core products, including oceanic mass, center-of-mass,
311      angular, and bottom pressure (see pkg/sbo/README.sbo).
312    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
313      to avoid negative values in shallow regions.
314      - updated verification/natl_box/results/output.txt
315      - updated verification/lab_sea/results/output.txt
316    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
317    o Added useSingleCpuIO option (see PARAMS.h).
318    o Updated useSingleCpuIO option in mdsio_writefield.F to
319      work with multi-field files, e.g., for single-file pickup.
320    o pkg/seaice:
321      - bug fix in growth.F: QNET for no shortwave case
322      - added HeffFile for specifying initial sea-ice thickness
323      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
324    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
325      kpp_transport_t.F, forward_step.F, and the_main_loop.F
326    o pkg/seaice:
327      - adjoint-friendly modifications
328      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
329    
330    checkpoint48e_post
331    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
332    o dynamics: change definition of computational domain & adapt mom_fluxform
333      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
334    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
335        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
336        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
337        global_ocean.90x40x15 global_with_exf global_ocean_pressure
338        inverted_barometer solid-body.cs-32x32x1
339      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
340    
341    checkpoint48d_post
342    o in preparation for r*:
343     a) use pre-computed gradient of hydrostatic potential:
344        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
345     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
346        => affects results of glob_oce_pressure (different truncation error)  
347      update output.txt of ideal_2D_oce & global_ocean_pressure
348    
349    checkpoint48d_pre
350    o in preparation for r*:
351      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
352      pass the 2 comp. of the grad. as arguments to momentum S/R.
353      but for the moment, only used if it does not change the results.
354    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
355    
356    checkpoint48c_post
357    Modifications in treatment of initial flux forcing controls
358    to avoid extra storing of flux fields.
359    
360    checkpoint48c_pre
361    o Added tidal_basin_2d experiment (currently 1D!)
362    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
363    
364    checkpoint48b_post
365    o r* coordinate added in #ifdef NONLIN_FRSURF block.
366     (modification to pressure gradient not yet implemented)
367    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
368      (for U & V) that are used for vertical advection of momentum.
369    
370    checkpoint48a_post
371    o In preparation for r*, use temp. array to compute vertical transport
372       in flux-form momentum pkg. => change results of few test-exp.
373      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
374                        lab_sea, natl_box & plume_on_slope
375    
376    checkpoint48
377    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
378    
379    checkpoint47j_post
380    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
381    o moved adexch from forward_step to addummy_in_stepping
382    o added exch in ctrl_map_...
383    o aveFreq.=0. at end of cost_final to avoid overwrite in
384      reverse checkpointing loop
385    o Yet more changes in gmredi:
386      * adgmredi_calc_tensor
387        avoiding all recomputation of gmredi_slope_limit
388      * adgmredi_x/y/rtransport
389        added flag for excessive storing to avoid recomp. of
390        u/v/rtans, dTdx/y/z
391        -> this is not really necessary and very memory-consuming
392      * adgmredi_slope_psi:
393        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
394      * gmredi_slope_limit
395        re-activated full calculation of taperfct for case 'ac02'
396    o updating verification/ adjoints of carbon, global_ocean.90x40x15
397    
398    checkpoint47i_post
399    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
400    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
401      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
402    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
403    o gmredi: fix few bugs.
404    
405    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
406    This will be a good checkpoint to plug into the ecco-branch.
407    o few modif.'s to get latest version adjointed
408      (mainly kick out code in ini_linear_phisurf)
409    o modif's to run adjoint with exactConserv
410    o case GM_BOLUS_ADVEC should be cleaned
411      S/R gmredi_slope_psi should be cleaned
412    o verification/carbon now has exactConserv=.TRUE.
413    
414    checkpoint47g_post
415    o time-average AIM output: becomes independent from statvars time-average
416      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
417    o After TAF bug fix:
418      Tested adjoint of gmredi package.
419      Tests were done with checkpoint47 rather than with latest
420      checkpoint47f_post since the latter is broken for the adjoint
421      verification/carbon/ contains both ADM and TLM gradient checks.
422    Here they are, before they get changed/lost/stolen.
423    Mostly modif.'s to fix numerical sensitivities.
424    Gradient checks OK for
425    - GM_taper_scheme:
426      * clipping
427      * ac02
428      * linear
429      * glw91
430      * dm95
431      * ldd97
432    - GMREDI_OPTIONS:
433      * GM_VISBECK_VARIABLE_K
434      * GM_NON_UNITY_DIAGONAL
435      * GM_EXTRA_DIAGONAL
436      * GM_BOLUS_ADVEC
437    in conjunction with data.gmredi parameters to be checked in
438    in a few minutes under verification/carbon/code/
439    
440    checkpoint47f_post
441    Merging from release1_p10:
442    o modifications for using pkg/exf with pkg/seaice
443      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
444        and SEAICE_EXTERNAL_FLUXES
445      - pkg/exf CPP options EXF_READ_EVAP and
446        EXF_NO_BULK_COMPUTATIONS
447      - usage examples are Experiments 8 and 9 in
448        verification/lab_sea/README
449      - verification/lab_sea default experiment now uses
450        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
451    
452    checkpoint47e_post
453    o created a tag prior to creating a branch
454    
455    checkpoint47d_post
456    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
457      at the bottom boundary had an erroneous half slip boundary condition
458    o added bottom drag and no slip boundary condition capabilities to
459      oceanic pressure coordinates code
460    o added new verification experiment global_ocean_pressure, this experiment is
461      also described in the tutorial section of the manual
462    checkpoint47d_pre
463    
464    checkpoint47c_post
465    o Added a verification experiment for a global cubed-sphere ocean run
466      -  verification/global_ocean.cubed32x32x30
467      -  uses pkg/therm_seaice and pkg/bulk_forcing
468    
469    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
470    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
471      when using P-coordinate; only implemented for atmospheric config.
472    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
473      NOTES: requires option NONLIN_FRSURF to be "#define".
474    o update advect_xz/results/output.txt (left from checkpoint44g_post)
475    
476    checkpoint47b_post
477    Merging from release1_p9:
478    o pkg/seaice
479      - removed GOTO's and added taf directives
480      - double precision constants to reduce the g77 (Linux)
481        to F77 (SGI) differences reported in release1_p8
482    o tools/genmake
483      - added SGI options
484    o verification/testscript
485      - updated to that of checkpoint47a_post
486    o verification/global_ocean.90x40x15/input/eedata
487      - modified for SGI f77 compatibility
488    o verification/lab_sea
489      - added description of sea-ice model
490      - added missing matlab routines
491      - added test of thermodynamics parallelization
492    
493    checkpoint47a_post
494    o new pkg: aim_v23
495     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
496       for now, keep the same surface forcing as before.
497     - Part-Cell implemented into AIM; check that Heat & Water are conserved
498     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
499     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
500    o add diagnostic of surface correction term in monitor output
501    
502    o bulk_force and therm_seaice
503    - Two packages:  bulk_force (Bulk forcing)
504      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
505    - Earlier integration from Stephaine Dutkiewicz
506      and Patrick Heimbach.
507    - Two ifdef statements for compile time,
508       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
509    
510    checkpoint47
511    differentiable version of checkpoint46n_post
512    o bug fix in quasihydrostaticterms
513    o * "clean" adjoint code (in terms of extensive recomputations)
514        can now be obtained for all GMREDI options (i.e. for
515        - GM_VISBECK_VARIABLE_K
516        - GM_NON_UNITY_DIAGONAL
517        - GM_EXTRA_DIAGONAL
518        - GM_BOLUS_ADVEC )
519      * However, wrong gradient check problem remains unsolved.
520      * New CPP options have been introduced for different
521        tapering schemes
522    o external_fields_load now part of differentiation list
523    o pressure needs multiple storing;
524      would be nice to have store_pressure at beginning or
525      end of forward_step, e.g. by having phiHyd global (5-dim.)
526      (NB: pressure is needed for certain cases in find_rho,
527      which is also invoked through convective_adjustment).
528    o recomputations in find_rho for cases
529     'JMD95'/'UNESCO' or 'MDJWF' are OK.
530    o #define ATMOSPHERIC_LOADING should be differentiable
531    o ini_forcing shifted to begining of initialise_varia
532    o Incorporating QNVS line search routines into MITgcm
533      (this is separate code, and therefore not under pkg)
534      lsopt/, optim/
535    o Updated verification/carbon/
536      - #define GM_VISBECK_VARIABLE_K
537      - GM_taper_scheme    = 'ldd97'    
538    
539    checkpoint46n_post
540    Merging from release1_p8:
541    o verification/natl_box:
542      updating new external_fields_load routine
543    o New package: pkg/seaice
544      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
545      The sea-ice code is based on Hibler (1979-1980).
546      Two sea-ice dynamic solvers, ADI and LSR, are included.
547      In addition to computing prognostic sea-ice variables and diagnosing
548      the forcing/external data fields that drive the ocean model,
549      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
550      The implied surface heat flux is then stored in variable
551      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
552      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
553      non-local transport term.  Because this call precedes model
554      thermodynamics, temperature under sea-ice may not be "exactly" at
555      the freezing point by the time theta is dumped or time-averaged.
556      N.B.: fairly large differences in accuracy occur across
557            different platforms/compilers; comparison between
558            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
559            generated output gives:
560       T           S           U           V
561      C D M    c        m  s        m  s        m  s        m  s
562      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
563      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
564      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
565    
566      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
567    o GAD:
568      - generated new common blocks to account for call of
569        same gad routines with differing traceridentities
570        (needed to modify tracerIdentity indices in GAD.h)
571      - generated separate common blocks for case useCubedSphereExchange
572        (Department of Futurology)
573      - parameter lists to gmredi_?transport: added tracerIdentity
574      - added new key indices to tamc.h
575    o external_fields_load:
576      - added this routine to TAF list
577      - needed to make some common blocks global and additional storing
578        along the same lines as exf package (checkpoint_lev?_directives.h)
579    o exf:
580      updated external forcing package
581      - bug fixes carried over from ecco-branch
582        (missing OBCS_OPTIONS.h in two routines)
583      - enable easy to use "no forcing".
584      - added exf I/O for atmospheric loading
585      - added exf I/O for runoff data
586      - transfered scaling between exf <-> MITgcm to exf namelist
587    o Adding new verification experiment global_with_exf.
588      This verification experiment is almost identical to the
589      global_ocean.90x40x15 experiment, except that it uses
590      the exf (and cal) package instead of the
591      external_fields_load routine (cf README file).
592    
593    checkpoint46m_post
594    o modified testscript to return -- when there are no lines of "%MON" output
595    o added new flag "quasiHydrostatic" for QH mode
596      and new routine quasihydrostaticterms()
597    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
598      New routine: mom_u_coriolis_nh()
599    o fixed sign of non-hydrostatic metric terms in u and v equations.
600      Depend on correct sign of gravitySign.
601    o added work.pc* to .cvsignore in aim directories using ifc
602    o introduced flag for controllin non-hydrostatic metric terms
603    o removed gravitySign from PARM04
604    o switched to g77/ifc from pgf77 in aim experiments
605    
606    checkpoint46l_post
607    o made convective adjustment work with pressure coordinates:
608     - changed the direction of k-loop in convective_adjustment.F for the
609       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
610     - adjusted the reference pressure k-index in convective_adjustment.F
611     - adjusted the convection condition in convect.F (in analogy to
612       calc_ivdc.F)
613     - convective_adjustment no longer computes anything on the halos
614     - removed the warnings about negative salinity from find_rho.F and
615       find_alpha.F; instead the new routine look_for_neg_salinity, called
616       at the beginning of find_rho, find_alpha, and find_beta, does a
617       check of the entire slice, if CPP-option
618       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
619    checkpoint46l_pre
620    
621    checkpoint46k_post
622    o fixed the verification/global_ocean.90x40x15 experiment:
623     - new bathymetry (the world according to A., JMC, and M.)
624     - new initial fields and forcing fields (*.bin files)
625     - new POLY3.COEFFS (for the next release one should switch to a full
626       equation of state: JMD95P or MDJWF)
627     - fixed several errors and redundancies in the data file
628     - experiment uses looped cells
629     - added matlab directory with diagnostic scripts for plotting of output
630    
631    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
632     - read AIM physics parameters from a file (data.aimphys)
633     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
634    
635    checkpoint46j_post
636    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
637    o move wVel computation at the end of the time step, in S/R integr_continuity
638    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
639    o update timeave pkg for wVel diagnostic.
640    checkpoint46j_pre
641    
642    checkpoint46i_post
643    o Clean up AIM package (and keep the results unchanged):
644      include CPP_OPTION and use IMPLICT NONE in all routines ;
645      declare all the variables _RL ; use _d 0 for all numerical constants.
646      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
647    
648    checkpoint46h_post
649    o cleaned up the use of rhoNil and rhoConst.
650      - rhoNil should only appear in the LINEAR equation of state, everywhere
651        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
652        and the dynamical equations are all divided by rhoConst
653    o introduced new parameter rhoConstFresh, a reference density of fresh
654      water, to remove the fresh water flux's dependence on rhoNil. The default
655      value is 999.8 kg/m^3
656    o cleanup up external_forcing.F and external_forcing_surf.F
657      - can now be used by both OCEANIC and OCEANICP
658    checkpoint46h_pre
659    
660     Added code to convert surface volume flux (fresh water) into
661     a mass flux when using P coordinates in the ocean (OCEANICP).
662     Note: It assumes you have set rho0=rhoConst=density of fresh water.
663    
664    checkpoint46g_post
665    o Include a new diagnostic variable phiHydLow for the ocean model
666      - in z-coordinates, it is the bottom pressure anomaly
667      - in p-coordinates, it is the sea surface elevation
668      - in both cases, these variable have global drift, reflecting the mass
669        drift in z-coordinates and the volume drift in p-coordinates
670      - included time averaging for phiHydLow, be aware of the drift!
671    o depth-dependent computation of Bo_surf for pressure coordinates
672      in the ocean (buoyancyRelation='OCEANICP')
673      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
674        Theta, Salinity, and Pressure in the parameter list. This routine is
675        presently contained in find_rho.F. This routine does not give the
676        correct density for 'POLY3', which would be a z-dependent reference
677        density.
678    o cleaned up find_rho
679      - removed obsolete 'eqn' from the parameter list.
680    o added two new verification experiments: gop and goz
681      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
682    checkpoint46g_pre
683    
684    checkpoint46f_post
685    o Enable tangent linear (forward mode) gradient checks:
686      - extended active file handling to g_... files
687      - added TANGENT_SIMULATION to theSimulationMode
688      - extended grdchk package accordingly
689    o added tangent linear setup in verification/carbon/code_ftl
690    o added adjoint setup in verification/front_relax/code_ad
691    
692    checkpoint46e_post
693    o Added new equation of state -> MDJWF
694      - EOS of McDougall et al., 2002, JAOT, submitted
695      - caveat: the equation of state is only valid for a smaller (more
696        realistic?) range of values than JMD95P/Z and UNESCO
697      - added masks to the calculation of pressure in store_pressure
698      - added more check values for density in check_eos (ini_eos.F), some of
699        the old check values are out of the range of the MDJWF-eos, so don't
700        expect perfect matches for those
701    checkpoint46e_pre
702    
703    checkpoint46d_post
704    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
705      'OCEANICP', also initialised field pressure correctly in ini_eos in the
706      case of pressure coordinates. eosType='JMD95Z' in
707      combination with buoyancyRelation='OCEANICP' now causes an error.
708    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
709      in find_alpha/beta.
710    checkpoint46d_pre
711    
712    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
713      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
714    
715    checkpoint46c_post
716    o Changes necessary for ocean in p-coordinates
717     -  Added new buoyancy relation = 'OCEANICP'
718     -  Added new parameters = gravitySign (this used to be contained inside
719        the factor dRdZ which I added when we first switched to R coordinates).
720     X GM/Redi is not compatible (yet)
721     X bottom drag and no-slip need to be debugged.
722    checkpoint46c_pre
723    
724    checkpoint46b_post
725    o Added new equation of state -> JMD95Z and JMD95P
726      - EOS of Jackett and McDougall, 1995, JAOT
727      - moved all EOS parameters into EOS.h
728      - new routines ini_eos.F, store_pressure.F
729    o Added UNESCO EOS, but not recommended because it requires
730      in-situ temperature (see JMD95)
731    o Modified formatting for knudsen2.f in utils/knudsen2 and added
732      unesco.f to be used with POLY3
733    checkpoint46b_pre
734    
735    checkpoint46a_post
736    o Added (atmospheric) pressure loading
737      - new field in FFIELDS.h, etc...
738      - new cpp flag ATMOSPHERIC_LOADING
739    o Changed hFacC to _hFacC in calc_phi_hyd.F
740    o Added SHORTWAVE_HEATING to some files for consistency
741    checkpoint46a_pre
742    
743    checkpoint46
744    further merges from release1_p5
745    o new ctrl package
746      - adopted from ECCO environment to enable optimization
747      - added Eliassen Palm fluxes to controls
748    o added Eliassen Palm flux controls to gradient check package
749    o cost package
750      - Compatible with new ctrl package
751      - added Eliassen Palm cost hooks
752      - modif's of existing cost functions
753    o Adjoint-related bug fixes in kpp:
754      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
755      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
756    o autodiff package
757      - flow directives:
758        + new for S/R do_the_model_io
759        + enhanced for S/R checkpoint
760        + new gmredi.flow
761      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
762        disable adcommon.h/g_common.h by default.
763      - fixed problem for adjoint of global_max
764    o modified verification/carbon/
765    o New setup for adjoint of global_ocean
766    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
767    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
768    o incorporated hooks for sponge layer code (external_forcing.F)
769    
770    checkpoint45d_post
771    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
772    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
773      (affects plume_on_slope "cg2d" output)
774    o add new parameter deltaTfreesurf for free-surface time stepping
775    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
776    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
777    o change phiMin in exp1 (to agree with documentation)
778    o add new flags:
779     - T,S forcing inside/outside Adams-Bashforth
780     - turn off temp,salt advection and/or forcing
781     - for each tracer, define internal flag for multiDimAdvection & A-B
782    o monitor: change definition of KE to check conservation of Energy
783    
784    checkpoint45c_post
785    o Removed f90 comments ("!")
786    o Modified initialisations to enable exf package for MITgcm
787      (without invoking ECCO_PACKAGE).
788    o modifications to gradient check package (Martin Losch)
789      - enable centered differences
790      - modified format of standard output
791    
792    checkpoint45b_post
793    o cleaned exchange calls in cg2d
794    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
795    o included CPP option SINGLE_LAYER_MODE in thermodynamics
796      to configure barotropic setup (Martin Losch)
797    o moved some initialisations within bi,bj loop in dynamics
798      (TAF flow dependency)
799    o in initialise_varia, moved call packages_init_variables
800      before convective_adjustment_init
801      (corresponding adjustment of TAF tape initialisation).
802    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
803    
804    checkpoint45a_post
805    o compute Rho over the whole domain (extend iMin,jMin indices)
806    o specific exchange for X-slice domain (case Ny=1)
807    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
808    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
809    
810    checkpoint44h_post = checkpoint45
811    o Fix to restore differentiability:
812      place at which packages_init_variables is called in
813      initialise_varia is crucial for reverse control flow.
814    o modifications in GMRedi to enable stable adjoint
815      (corresponding modif's in thermodynamics, dynamics)
816    o added missing hook for sponge layer code in external_forcing
817    o modified test cost functions
818    o storing in gad_advection (plus removal of write(0,*)!
819    o missing headers TR1.h added in convective_adjustment routines
820    o errorMessageUnit set non-equal zero in eeboot
821      (conflict on some platforms, e.g. IBM SP3)
822    o modified carbon verif.
823    
824    checkpoint44h_pre
825    o vertical grid option: allow to put the Interface at the middle between
826      2 cell-centers ; replace delZ in pkg/kpp by drF.
827    o GM Advective form: Tracers are advected using the residual transport (=
828      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
829    
830    checkpoint44g_post
831    o fix surface correction term in multiDimAdvection (affects plume_on_slope
832      results) ; ifdef missing in thermodynamics.F
833    
834    checkpoint44f_pre,checkpoint44f_post
835    o added PTRACERS package
836      This allows an arbitrary number of passive tracers to be integrated
837      forward simultaneously with the dynamicaly model.
838      + Implemented so far:
839        - basic forward algorithm (time-stepping, advection, diffusion, convection)
840        - I/O and checkpointing
841        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
842      + Not implemented so far:
843        - KPP
844        - OBCS
845      + No specific example supplied (yet) but global_ocean.90x40x15 has the
846        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
847        line in data.pkg.
848      + This package is disabled by default since it increases storage.
849    
850    
851    o testscript: added -cleanup option
852    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
853                 b) enable to filter 2D fields.
854    
855    checkpoint44e_pre,post
856    o re-wrote convective adjustment to use pre-calculated weights
857      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
858      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
859      Original calls to convect() still in place.
860    
861    chkpt44d_pre,post
862    o added missing EXCLUDE_MONITOR flags
863    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
864      (incompatible typ in MIN/MAX expressions caused problems
865      on IBM SP3)
866    o in genmake added variable MAKEDEPEND
867      plus resetting for case SunOS
868    o added timer_stats.c routine for IBM SP3
869    o removed variables in dynamics
870    !!! I forgot to create tag chkpt44d_pre !!!
871    !!! But chkpt44d_pre = chkpt44c_post    !!!
872    
873    o real fresh water flux implemented with non-linear free-surface.
874    
875    chkpt44c_pre,post
876    o few fix (mask in shap_s2, EmPmR in external_field_load,
877      USE_NATURAL_BCS in solve_for_P);
878    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
879    
880    checkpoint44b_pre/_post
881    o merge of relevant stuff from the ecco-branch:
882      - genmake: removed $S64 overwrite for case SunOS
883      - pkg/exf: update and corrections for field swapping and obcs
884      - pkg/ecco: parameter lists for the_model_main, the_main_loop
885                  harmonized between ECCO and MITgcm
886      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
887                      updated checkpointing_lev... lists for obcs
888      - model/src: minor changes in forward_step, plot_field
889                   added directive for divided adjoint in the_main_loop
890      - pkg/mdsio: added mdsio_gl_slice
891    
892    o check parameters & config (chkpt44a_pre,post)
893    o OBC and NonLin_FrSurf.
894    
895    checkpoint44
896    o fix bug in mom_vi_del2uv
897    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
898    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
899    o update AIM experiments (NCEP input files)
900    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
901    o added some stuff for AD
902    
903    checkpoint43
904    o added two new advection tests
905    o added global 4x4 degree ocean test
906    o added test of H&S94 with free surface on cube
907    o some final mods for gradient check, adjoint,...
908    
909    checkpoint42
910      Fixed AD-related problems:
911    o Store directives up-to-date with re-arranged Adams-Bashforth
912      (mainly thermodynamics.F)
913    o New store directives for multi-dim. advection schemes
914      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
915      * new common block and key passkey
916      (mainly gad_advection.F)
917    o Modified store directives for split of dynamics/thermodynamics
918      for the case ALLOW_KPP
919    o Cleaned argument list for timestep_tracer.F
920    
921    checkpoint41
922    o re-formatted/added comments in prologues of key subroutines
923      to work with protex
924    
925    checkpoint40
926    o moved calc_gs, calc_gt and calc_tr1 back to model/src
927    o added FLT (floats) package from Arne along with demo. experiment
928    o re-arranged Adams-Bashforth scheme for tracers to allow easier
929      implementation of forward-in-time forcing terms
930    o more mods for non-linear free-surface including new variable
931    o modified multi-dim method to work on cube
932    o bug fix in KPP (from DM)
933    
934    checkpoint40pre9
935    o added DST advection schemes
936    o fix MPI bug on SGI's
937    o modifications for non-linear free-surface
938    o fixed conditionals for fixed flow/passive tracer only mode
939    o added tension/strain form of stress tensor
940    o changes to commenting of arguments for TAF/TAMC
941    o added/updated many matlab scripts
942    o added multi-dimensional advection method for tracers
943      
944    checkpoint40pre8
945    o new package rw/
946      Added method for dumping intermediate local arrays:
947      mdsio_writetile - same as mdsio_writefield except works from inside
948                        bi,bj loop
949      mdsio_writelocal - same as mdsio_writetile except works for local
950                         arrays
951      write_local_r? - higher-level wrapper for mdsio_writelocal
952      Controlled by diagFreq. Defaults to zero (ie. no dumps)
953      Example given at end of mom_vecinv.F that dumps some local arrays.
954    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
955      control flux-form versus vector invariant code.
956      Switch is runtime flag vectorInvariantMomentum (defaults to false)
957      or genmake -DISABLE ...
958    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
959      (additional storing is now needed for case vecinv;
960      currently nothing implemented to switch this storing off
961      in case fluxform is used since no CPP flag available).
962    
963    checkpoint40pre7
964    o bug fix in dynamics.F
965      calc_viscosity called before k=1,Nr loop.
966    o added some #ifdef's ALLOW_PASSIVE_TRACER
967    o cleaned initialisations in ctrl_map_ini
968      related to TAF
969    
970    checkpoint40pre6
971    o split dynamics into thermodynamics & dynamics
972    o corresponding split of calc_diffusivity into
973      calc_diffusivity, calc_viscosity
974      (kpp_calc_diff, kpp_calc_visc).
975    o Added diffkr, kapgm to control variables
976    o bug fix in gmredi_slope_limit for ldd97
977    
978    checkpoint40pre5
979    o proper initialization of Adams-Bashforth time stepping
980      + uses forward step for very first step of model (iter=0)
981    o re-generated *all* output since almost all output is modified by this
982      change (sorry but we've been putting this one off for about 2 years)
983      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
984        *not* regenerated since they are already out of date and I don't
985        want to create the impression that they are suddenly working.
986    o removed KAP stuff for DEC's
987    o modified/added many .cvsignore files in */code and */input
988    o added new expt "solid-body.cs-32x32x1"
989      + this uses an alternative form of ini_curvilinear_grid.F which
990        is not necessarily any better than the current one...
991    
992    checkpoint40pre4
993    o added re-initialisations of utrans,vtrans,rtrans in
994      calc_common_factors which are crucial for TAF.
995    o extended iMin,jMin range for calc_common_factors,
996      calc_diffusivity
997    o added option ALLOW_PASSIVE_TRACER
998    o a few minor updates and fixes
999    
1000    checkpoint40pre3
1001    o created calc_gtr1.F for gad package
1002    o split the_main_loop and re-introduced forward_step
1003    o some recomputations of nIter0 for TAMC
1004    
1005    checkpoint40pre2
1006    o Updated to latest branch of AJA, JMC
1007    o Added gradient check package
1008    o Added routines for passive tracer handling
1009    o Added carbon sequestration sensitivity experiment
1010    
1011    checkpoint39
1012     o Modifications and fixes to support TAMC
1013       (mainly missing or wrong directives)
1014     o Corrected common blocks when fooling TAMC to produce adjoint I/O
1015       in addummy_in_stepping
1016     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
1017     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
1018     o Included following packages:
1019       cal: calendar
1020       exf: external forcing
1021       ecco: essential routines to control use of cal, exf
1022             (NB: this is not the full ECCO environment)
1023     o disabled some packages by default in genmake
1024    
1025    checkpoint38
1026     o see notes_c37_adj.txt
1027     o corrected wrong layer index in external_forcing_t
1028     o replaced the_main_loop/forward_step by the_main_loop
1029     o removed forceoutput from write_state
1030       (replaced criteria for initial/final state)
1031     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
1032    
1033    checkpoint37
1034     o mdsio.F routine split and packaged in pkg/mdsio
1035       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
1036        used unless genmake -disable=mdsio)
1037     o allow a more precise surface-geopotential gradient for the atmosphere
1038       taking into account the change in space of Alpha (=1/rho) at the surface.
1039     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
1040       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
1041     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
1042       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
1043       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
1044     o Time-Average diagnostics defined as a pseudo package "timeave".
1045     o pickup files : old pickup (before c35) did not work with new code (c35
1046       and after) unless activating 2 commented lines in initialise-varia.
1047     o Non-Hydrostatic pickup file Pb fixed.
1048     o bug with Rigid-lid version (since c35) fixed.  
1049    
1050    checkpoint36
1051     o implement Crank-Nickelson barotropic time-stepping
1052     o recover Time-Average diagnostics
1053     o fix Pb in checkpoint (PR#19)
1054     o AIM become a standard package ; clean unused CPP_kees
1055    
1056    checkpoint35
1057     o subtantial rewrite of dynamics.f
1058     o allows staggered time-stepping
1059     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
1060     o added bottom drag (linear + quadratic)
1061    
1062    checkpoint34
1063     o Modified exchange routines for correct reverse simulation.
1064     o Added verification output to comply with bug fix in impldiff.F
1065       as of c33 (exp2, natl_box).
1066     o Corrected store directives in dynamics.F
1067     o Corrected array boundaries in impldiff.F
1068     o Corrected array dimensions in gmredi.
1069       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
1070     o Added routine GLOBAL_SUM_INT to global_sum.F
1071     o Added mdsio_gl.F for ECCO purposes.
1072    
1073    checkpoint33
1074     o Fixed bug in lower BC in impldiff.F
1075     o Fixed confusion about units of forcing arrays in FFIELDS.h
1076       namely Fu,Fv,Qnet,Qsw,EmPmR:
1077       - Removed verification/natl_box/code/external_fields_scale.F
1078         (did not differ from that in model/src)
1079       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
1080         (see FFIELDS.h for description)
1081       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
1082         kpp_calc.F and kpp_transport_t.F
1083       - Removed model/src/external_fields_scale.F and calls to it
1084       - verification/natl_box uses flux data with "atmospheric" sign so
1085         a special version of external_fields_load.F is used to
1086         change the data as it's read in. This way, the arrays
1087         have the right units and signs at all times tha a user could
1088         possibly use them.
1089     o Corrected genmake to delete a temporary file during configuration
1090    
1091    checkpoint32
1092     o Scaling of forcing fields moved from external_forcing.F to
1093       external_fields_scale.F, called directly after loading fields.
1094     o Surface relaxation terms added to surface tendency fields in
1095       extra subroutine.
1096     o impldiff.F changed to avoid storing by TAMC of huge intermediate
1097       fields.
1098     o Changes in GMRedi to comply with packaging structure.
1099     o Modifications and bug fixes in KPP package.
1100     o Verification experiment for KPP added (verification/nat_box/)
1101    
1102    checkpoint31
1103     o Packages interface brought in line with defined standard
1104       -> new routines packages_...F
1105       -> changes in initialise_fixed.F, initialise_varia.F
1106       -> enables initialisation interface for ECCO package
1107     o Rescaling of external forcing fields immediately after read
1108       (removed from external_forcing.F)
1109       -> new: surface_fields_scale.F
1110       -> affects ini_foorcing.F, external_fields_load.F
1111     o Computation of surface tendencies before tendency updates.
1112       -> new: external_forcing_surf.F
1113     o Change of variable names useGMRedi, useKPP, useECCO
1114     o Further changes in dynamics.F, impldiff.F for TAMC
1115     o Tested for experiments 0, 2, 4.
1116       - not yet tested for GMRedi.
1117       - not yet tested for KPP.
1118    
1119    checkpoint30
1120     o Updates for OBCs
1121     o New experiment for test OBCs (internal_wave)
1122     o New output.txt in verification/exp4/results/
1123     o Updates for KPP: calculation of viscosity corrected, new variables
1124       kpp_dumpFreq and kpp_taveFreq
1125     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
1126       and entry for T90 in genmake
1127    
1128    checkpoint29
1129     o packaged KPP and GM/Redi
1130    
1131    checkpoint28
1132     o Corrected initialization of hFacMin for difference vertical coordinates
1133     o Modified calculation of partial cell thickness to more robust algorithm
1134     o config_summary.F: replaced write_1D_... by write_0D_...
1135       read_write.F: added subroutines write_0D_...
1136     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
1137       included some initialisations required for TAMC.
1138     o routine calc_isoslopes: modified sqrt computation to make it
1139       differentiable for zero argument.
1140     o routines dynamics, impldiff:
1141       included store directives and tape key computations required for TAMC.
1142     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
1143    
1144    checkpoint27
1145     o fixed calc_isoslopes() to so that cancellation of terms in tensor
1146       formulation works properly with variable resolution.
1147     o restructured the calling tree between the_model_main() and dynamics()
1148     o split initialise() into initialise_fixed() and initialise_varia()
1149     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
1150       in new routine ini_psurf()
1151    
1152    checkpoint26
1153     o moved some #ifdef in optional routines to encompass everything
1154       except the argument declarations. This was using up some memory.
1155     o fixed macros like _ADT to work with both versions of Linux cpp
1156     o cleaned up some unused and uninitialized variables
1157       (helps when debugging with strict compile options)
1158     o split up CPP_EEOPTIONS.h into options and macros
1159       (macros are now in eesupp/inc/CPP_EEMACROS.h)
1160     o patch for 2 processor JAM mode
1161    
1162    checkpoint25
1163     o updates for OBCs and NH
1164     o dramatically reduced memory usage
1165     o added "JAM" routines for use on Artic network
1166     o parameterization of convection by implicit vertical diffusion
1167     o added a diagnostic of convective index
1168     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
1169       (this is was partly for OBCs and NH but also in anticipation of
1170        an explicit free-surface option)
1171     o initial state input files for U and V
1172    
1173    checkpoint24
1174     o Removed some spurious "REAL"s
1175     o Updated KPP to latest version from JPL
1176     o Added a COS(latitude) in horizontal viscosity
1177    
1178    checkpoint23
1179     o Added del^4 diffusion for salt and temperature
1180     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
1181    
1182    checkpoint22
1183     o Made many small changes: implicit none, format(i5), etc...
1184     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
1185    
1186    checkpoint21
1187     o Introduced new I/O package that supports direct-access records (mdsio.F)
1188     o Split-up mid-level I/O routines
1189     o Updated input data for experiments 0,1,2,4 and 5
1190     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
1191    
1192    checkpoint20
1193     o Tidied up open-boundaries some more
1194     o Added non-hydrostatic code
1195     o Fixed some input data
1196     o Modified MPI start-up to work in "coupled" context.
1197    
1198    checkpoint19
1199     o Tidied up directory structure for verification experiments.
1200     o Added new code for open boundaries.
1201     o Corrected advective terms near boundaries.
1202     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
1203     o Implemented free-slip/no-slip BCs and del^4 dissipation.
1204     o Split default parameters out of ini_parms.F into set_defaults.F.
1205    
1206    checkpoint18
1207     o Further changes for optional code generation with
1208       CPP - ugh!
1209    
1210    checkpoint17
1211     o Beginning to incorporating modularity
1212       for supporting atmos. and ocean configs.
1213     o Small changes for TAMC complinace
1214     o New ultra simple test case. Barotropic box
1215       configuration "exp0".
1216    
1217    checkpoint16
1218     o Minor changes to exchange routines to support
1219       accumulation in reverse mode. Adjoint of an
1220       assignment is an addition.
1221     o Changes to support compilation by TAMC (LR(1)
1222       syntax) and by g77 under Linux ( 72 character
1223       limit ).
1224    
1225    checkpoint15
1226     Rewrote exchange routines to allow
1227     o General tile <-> tile connectivity.
1228     o TAMC reverse mode flag ( is this really needed? )
1229     o Variable width overlap and exchange region widths.
1230     o Hooks for sharing data via DMA, Arctic, Memory Channel,
1231       shmput/shmget, VIA, SYSV shmem and every other cool
1232       communication method.
1233    
1234    checkpoint14
1235     Consistent isomorphism chages made. These allow dynamical core
1236     to support both pressure and meters as a vertical coordinate.
1237    
1238    checkpoint13
1239     Release which corrects global_max problem and a couple
1240     of KGM time-averaging diagnostic errors. Also contains
1241     a double-gyre experiment setup as well as the baseline
1242     4 degree global template. The double gyre template is
1243     organised to allow it to be applied automatically to
1244     the baseline configuration.
1245    
1246    branch-point-rdot
1247     A few tidy-ups have been made bt the real point of this
1248     check-point (excuse the pun) is to allow a branch to be
1249     made for the purposes of adding the rDot alterations.
1250     I don't want to commit the rDot to the main-trunk until
1251     we've actually tested it...
1252    
1253    checkpoint12
1254     Tidy up and added generic genmake script (formerly
1255     configure script).
1256     Released to testers.
1257    
1258    checkpoint11
1259     Re-arranged initialise() and introduced ini_vertical_grid()
1260     and ini_masks_etc().
1261    
1262  checkpoint10  checkpoint10
1263   Introduced the configure script.   Introduced the configure script.
1264   Separated out the diags package.   Separated out the diags package.

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