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revision 1.35 by jmc, Thu Feb 8 20:45:27 2001 UTC revision 1.167 by heimbach, Tue Jun 24 18:27:09 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint51
7    o merged improved packages from ecco-branch (ecco_c51_e34) to MAIN
8      - autodiff, ctrl, exf, grdchk, seaice
9      kept separate packages
10      - cost, ecco, obcs
11    o updating verification/internal_wave, verification/lab_sea
12      (all verif's pass on faulks.lcs.mit.edu RH7.3, g77)
13    
14    checkpoint50i_post
15    o Preparing next differentiable checkpoint and sync
16      of MAIN vs. ecco-branch
17      - 1st step: this one is differentiable
18      - 2nd step: next(! not this) checkpoint will have updated packages
19                  from ecco-branch)
20    
21    checkpoint50h_post
22    o new package "land": provide surface BC for AIM.
23    o pkg/ptracers: apply exchange to all tracers after reading a pickup.
24    o AIM: use true log-P extrapolation for near surface temp (= as in
25        F.Molteni paper) ; update aim.5l_cs output.
26    o New variable in PARM03 for more flexible pickups
27    o somewhat cleaned package initialisation sequence for
28      ctrl/ cost/ ecco/ in packages_... routines
29    
30    checkpoint50g_post
31    o merged with release1_p17 (pkg/seaice and verification/lab_sea)
32      - added SEAICE_MULTILEVEL for 8-category sea-ice thermodynamics
33      - LSR sea-ice dynamic solver moved to SouthWest B-grid location and
34        made the default because of faster convergence than ADI
35    
36    checkpoint50f_post
37    o exf totally restructured
38      - replaced all exf_set_ routines by one generic exf_set_gen.F
39        and made sure it's still differentiable
40      - split exf_getffields.F into new exf_bulkformulae.F
41      - exf_inscal_/exf_outscal_ suffixes consistent with field names
42      - updated adjoint/makefile and relevant verif. accordingly
43    
44    checkpoint50f_pre
45     o AIM: near surface temp evaluated from Pot.Temp: fixed for Part Cell ;
46          + change Evap over land. (update aim.5l_cs output)
47     o added missing .cvsignores and made uniform across expts
48     o changed configuration of tidal_basin_2d expt
49     o added pkg/debug functions for tracing code in fatal crashes
50     o tidied pkg/monitor to use MONITOR_OPTIONS.h
51     o new fn in pkg/monitor to stop model if solution grows too big
52     o removed lots of single quotes from comments
53    
54    checkpoint50e_post
55    o make KPP work with PTRACERS
56     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
57       nearly a copy of kpp_transport_s
58     - there is no analogue to SurfaceTendencyS, so I have to use
59       gPtr(of the surface layer) instead
60    o add a new platform SunFire+mpi (SunFire 15000) to genmake
61    checkpoint50e_pre
62    
63    checkpoint50d_post
64    o change kpp output from multiple-record state files to single-record state
65      files analogous to write_state.F
66    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
67      analogous to the cg2d-related output.
68    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
69      so that writing to internal file fn (with length 512) fails.
70    checkpoint50d_pre
71    
72    checkpoint50c_post
73    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
74    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
75    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
76    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
77    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
78    
79    checkpoint50c_pre
80    Merging from release1_p13:
81    o bug fix for pkg/seaice dynamic solver
82    o Added SEAICE_initialHEFF to pkg/seaice
83    
84    checkpoint50b_post
85    o store u*,v* in gU,V instead of in guNm1,gvNm1
86    o in order to put the momForcing out of the Adams-Bashforth:
87      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
88      to timestep.F
89    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
90    o re-generate output for highly sensitive test-exp:
91       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
92    
93    checkpoint50b_pre
94    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
95    o corrected CPP option mismatch in exf_Bulk... functions for case
96      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
97    
98    checkpoint50a_post
99    o Bug fix for merging between c50 and KPP.
100      ikey was passed from thermodynamics to kpp_calc via
101      common block rather than being recomputed in kpp_calc,
102      in contradiction with new key itdkey.
103      New key ikppkey created, and tamc.h headers updated.
104    
105    checkpoint50
106    - 2nd step of merge with ecco-branch:
107      merge changes in ecco-branch back into main trunk
108    - bug fix in find_alpha
109    - more storing in gmredi_calc_tensor.F, kpp_routines.F
110    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
111    - merged some sliced AD support routines
112    
113    checkpoint49
114    merged from ecco-branch:
115    o exf:
116      - Enable initialisation of forcing fields to constant
117        (runtime) values.
118      - in exf_getffields.F
119        Reduce i-/j-loop to interior domain, discarding overlaps.
120        That also fixes wrong TAF-key computations for key_1, key_2
121        with bulf formulae.
122      - exf_init.F modify #ifdef for exf_init_evap
123      - exf_getffieldrec.F, ctrl_getrec.F
124        The following INT-usages are not safe:
125          fldsecs  = int(fldsecs/fldperiod)*fldperiod
126          fldcount = int(fldsecs/fldperiod) + 1
127        and were modified.
128    o autodiff: checkpoint_lev...
129      - updated storing for bulk formulae (some arrays were missing)
130      - added state for seaice package
131      - synchronized with main branch
132    o DIVA:
133      Modif.s in
134      - the_main_loop.F
135      - the_model_main.F
136      and added cost_final_restore.F cost_final_store.F
137      o With these changes, it is possible to fully separate
138        the first forward run to compute the cost function (mdthe_main_loop)
139        and adjoint runs over individual DIVA intervals (adthe_main_loop)
140        into separate model executions.
141        This enables better tuning of DIVA to given queue sizes.
142      o Loss of cost function value in consecutive DIVA runs is
143        fixed by storing to 'costfinal' file.
144      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
145        beginning/end of adjoint integration is accounted for.
146      The current changes apply to TAF-1.4.26.
147      TAF has one remaining bug, requiring one manual change
148      (see MITgcm manual).
149    o cal: synchronized between MAIN and ecco-branch
150    
151    checkpoint48i_post
152    o Changes to restore differentiability of code w.r.t. previous tag
153      (mostly adding new routines to make list and replacing
154      pressure by totPhiHyd).
155    o Updated and merged grdchk package
156      - has both ADM and TLM checks
157      - works for single- and multi-proc.
158      - output cleaned
159      - worked successfully for parallel DIVA
160    o genmake:
161      - Adding -platform=SP4
162      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
163    o Modif. for DIVA:
164      ctrl_unpack should not be called in intermediate DIVA interval.
165      (similar thing would apply for active files such as
166      tbar, sbar, psbar, which should not be reinitialised;
167      only relevant for ecco-branch)
168    
169    checkpoint48h_post
170    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
171    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
172    o Added SEAICE_initialHEFF to pkg/seaice
173    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
174    
175    checkpoint48g_post
176    --- EOS:
177    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
178      store total Potential in totPhyHyd for diagnostics & EOS.
179    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
180    --- Pressure/geopotential gradient:
181    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
182    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
183      ( changes results of global_ocean_pressure )
184    o NLFS + z-coord.: add eta*Rho' contribution.
185    o accurate phiHyd when using interface-W at the middle between 2 centers
186     ( changes results of ideal_2D_oce )
187    o includes r* 2nd term in potential gradient.
188    
189    checkpoint48f_post
190    Merging from release1_p12:
191    o Modifications for using pkg/exf with pkg/seaice
192      - improved description of the various forcing configurations
193      - added basic radiation bulk formulae to pkg/exf
194      - units/sign fix for evap computation in exf_getffields.F
195      - updated verification/global_with_exf/results/output.txt
196    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
197      (SBO) core products, including oceanic mass, center-of-mass,
198      angular, and bottom pressure (see pkg/sbo/README.sbo).
199    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
200      to avoid negative values in shallow regions.
201      - updated verification/natl_box/results/output.txt
202      - updated verification/lab_sea/results/output.txt
203    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
204    o Added useSingleCpuIO option (see PARAMS.h).
205    o Updated useSingleCpuIO option in mdsio_writefield.F to
206      work with multi-field files, e.g., for single-file pickup.
207    o pkg/seaice:
208      - bug fix in growth.F: QNET for no shortwave case
209      - added HeffFile for specifying initial sea-ice thickness
210      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
211    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
212      kpp_transport_t.F, forward_step.F, and the_main_loop.F
213    o pkg/seaice:
214      - adjoint-friendly modifications
215      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
216    
217    checkpoint48e_post
218    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
219    o dynamics: change definition of computational domain & adapt mom_fluxform
220      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
221    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
222        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
223        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
224        global_ocean.90x40x15 global_with_exf global_ocean_pressure
225        inverted_barometer solid-body.cs-32x32x1
226      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
227    
228    checkpoint48d_post
229    o in preparation for r*:
230     a) use pre-computed gradient of hydrostatic potential:
231        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
232     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
233        => affects results of glob_oce_pressure (different truncation error)  
234      update output.txt of ideal_2D_oce & global_ocean_pressure
235    
236    checkpoint48d_pre
237    o in preparation for r*:
238      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
239      pass the 2 comp. of the grad. as arguments to momentum S/R.
240      but for the moment, only used if it does not change the results.
241    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
242    
243    checkpoint48c_post
244    Modifications in treatment of initial flux forcing controls
245    to avoid extra storing of flux fields.
246    
247    checkpoint48c_pre
248    o Added tidal_basin_2d experiment (currently 1D!)
249    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
250    
251    checkpoint48b_post
252    o r* coordinate added in #ifdef NONLIN_FRSURF block.
253     (modification to pressure gradient not yet implemented)
254    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
255      (for U & V) that are used for vertical advection of momentum.
256    
257    checkpoint48a_post
258    o In preparation for r*, use temp. array to compute vertical transport
259       in flux-form momentum pkg. => change results of few test-exp.
260      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
261                        lab_sea, natl_box & plume_on_slope
262    
263    checkpoint48
264    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
265    
266    checkpoint47j_post
267    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
268    o moved adexch from forward_step to addummy_in_stepping
269    o added exch in ctrl_map_...
270    o aveFreq.=0. at end of cost_final to avoid overwrite in
271      reverse checkpointing loop
272    o Yet more changes in gmredi:
273      * adgmredi_calc_tensor
274        avoiding all recomputation of gmredi_slope_limit
275      * adgmredi_x/y/rtransport
276        added flag for excessive storing to avoid recomp. of
277        u/v/rtans, dTdx/y/z
278        -> this is not really necessary and very memory-consuming
279      * adgmredi_slope_psi:
280        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
281      * gmredi_slope_limit
282        re-activated full calculation of taperfct for case 'ac02'
283    o updating verification/ adjoints of carbon, global_ocean.90x40x15
284    
285    checkpoint47i_post
286    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
287    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
288      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
289    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
290    o gmredi: fix few bugs.
291    
292    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
293    This will be a good checkpoint to plug into the ecco-branch.
294    o few modif.'s to get latest version adjointed
295      (mainly kick out code in ini_linear_phisurf)
296    o modif's to run adjoint with exactConserv
297    o case GM_BOLUS_ADVEC should be cleaned
298      S/R gmredi_slope_psi should be cleaned
299    o verification/carbon now has exactConserv=.TRUE.
300    
301    checkpoint47g_post
302    o time-average AIM output: becomes independent from statvars time-average
303      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
304    o After TAF bug fix:
305      Tested adjoint of gmredi package.
306      Tests were done with checkpoint47 rather than with latest
307      checkpoint47f_post since the latter is broken for the adjoint
308      verification/carbon/ contains both ADM and TLM gradient checks.
309    Here they are, before they get changed/lost/stolen.
310    Mostly modif.'s to fix numerical sensitivities.
311    Gradient checks OK for
312    - GM_taper_scheme:
313      * clipping
314      * ac02
315      * linear
316      * glw91
317      * dm95
318      * ldd97
319    - GMREDI_OPTIONS:
320      * GM_VISBECK_VARIABLE_K
321      * GM_NON_UNITY_DIAGONAL
322      * GM_EXTRA_DIAGONAL
323      * GM_BOLUS_ADVEC
324    in conjunction with data.gmredi parameters to be checked in
325    in a few minutes under verification/carbon/code/
326    
327    checkpoint47f_post
328    Merging from release1_p10:
329    o modifications for using pkg/exf with pkg/seaice
330      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
331        and SEAICE_EXTERNAL_FLUXES
332      - pkg/exf CPP options EXF_READ_EVAP and
333        EXF_NO_BULK_COMPUTATIONS
334      - usage examples are Experiments 8 and 9 in
335        verification/lab_sea/README
336      - verification/lab_sea default experiment now uses
337        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
338    
339    checkpoint47e_post
340    o created a tag prior to creating a branch
341    
342    checkpoint47d_post
343    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
344      at the bottom boundary had an erroneous half slip boundary condition
345    o added bottom drag and no slip boundary condition capabilities to
346      oceanic pressure coordinates code
347    o added new verification experiment global_ocean_pressure, this experiment is
348      also described in the tutorial section of the manual
349    checkpoint47d_pre
350    
351    checkpoint47c_post
352    o Added a verification experiment for a global cubed-sphere ocean run
353      -  verification/global_ocean.cubed32x32x30
354      -  uses pkg/therm_seaice and pkg/bulk_forcing
355    
356    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
357    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
358      when using P-coordinate; only implemented for atmospheric config.
359    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
360      NOTES: requires option NONLIN_FRSURF to be "#define".
361    o update advect_xz/results/output.txt (left from checkpoint44g_post)
362    
363    checkpoint47b_post
364    Merging from release1_p9:
365    o pkg/seaice
366      - removed GOTO's and added taf directives
367      - double precision constants to reduce the g77 (Linux)
368        to F77 (SGI) differences reported in release1_p8
369    o tools/genmake
370      - added SGI options
371    o verification/testscript
372      - updated to that of checkpoint47a_post
373    o verification/global_ocean.90x40x15/input/eedata
374      - modified for SGI f77 compatibility
375    o verification/lab_sea
376      - added description of sea-ice model
377      - added missing matlab routines
378      - added test of thermodynamics parallelization
379    
380    checkpoint47a_post
381    o new pkg: aim_v23
382     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
383       for now, keep the same surface forcing as before.
384     - Part-Cell implemented into AIM; check that Heat & Water are conserved
385     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
386     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
387    o add diagnostic of surface correction term in monitor output
388    
389    o bulk_force and therm_seaice
390    - Two packages:  bulk_force (Bulk forcing)
391      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
392    - Earlier integration from Stephaine Dutkiewicz
393      and Patrick Heimbach.
394    - Two ifdef statements for compile time,
395       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
396    
397    checkpoint47
398    differentiable version of checkpoint46n_post
399    o bug fix in quasihydrostaticterms
400    o * "clean" adjoint code (in terms of extensive recomputations)
401        can now be obtained for all GMREDI options (i.e. for
402        - GM_VISBECK_VARIABLE_K
403        - GM_NON_UNITY_DIAGONAL
404        - GM_EXTRA_DIAGONAL
405        - GM_BOLUS_ADVEC )
406      * However, wrong gradient check problem remains unsolved.
407      * New CPP options have been introduced for different
408        tapering schemes
409    o external_fields_load now part of differentiation list
410    o pressure needs multiple storing;
411      would be nice to have store_pressure at beginning or
412      end of forward_step, e.g. by having phiHyd global (5-dim.)
413      (NB: pressure is needed for certain cases in find_rho,
414      which is also invoked through convective_adjustment).
415    o recomputations in find_rho for cases
416     'JMD95'/'UNESCO' or 'MDJWF' are OK.
417    o #define ATMOSPHERIC_LOADING should be differentiable
418    o ini_forcing shifted to begining of initialise_varia
419    o Incorporating QNVS line search routines into MITgcm
420      (this is separate code, and therefore not under pkg)
421      lsopt/, optim/
422    o Updated verification/carbon/
423      - #define GM_VISBECK_VARIABLE_K
424      - GM_taper_scheme    = 'ldd97'    
425    
426    checkpoint46n_post
427    Merging from release1_p8:
428    o verification/natl_box:
429      updating new external_fields_load routine
430    o New package: pkg/seaice
431      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
432      The sea-ice code is based on Hibler (1979-1980).
433      Two sea-ice dynamic solvers, ADI and LSR, are included.
434      In addition to computing prognostic sea-ice variables and diagnosing
435      the forcing/external data fields that drive the ocean model,
436      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
437      The implied surface heat flux is then stored in variable
438      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
439      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
440      non-local transport term.  Because this call precedes model
441      thermodynamics, temperature under sea-ice may not be "exactly" at
442      the freezing point by the time theta is dumped or time-averaged.
443      N.B.: fairly large differences in accuracy occur across
444            different platforms/compilers; comparison between
445            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
446            generated output gives:
447       T           S           U           V
448      C D M    c        m  s        m  s        m  s        m  s
449      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
450      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
451      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
452    
453      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
454    o GAD:
455      - generated new common blocks to account for call of
456        same gad routines with differing traceridentities
457        (needed to modify tracerIdentity indices in GAD.h)
458      - generated separate common blocks for case useCubedSphereExchange
459        (Department of Futurology)
460      - parameter lists to gmredi_?transport: added tracerIdentity
461      - added new key indices to tamc.h
462    o external_fields_load:
463      - added this routine to TAF list
464      - needed to make some common blocks global and additional storing
465        along the same lines as exf package (checkpoint_lev?_directives.h)
466    o exf:
467      updated external forcing package
468      - bug fixes carried over from ecco-branch
469        (missing OBCS_OPTIONS.h in two routines)
470      - enable easy to use "no forcing".
471      - added exf I/O for atmospheric loading
472      - added exf I/O for runoff data
473      - transfered scaling between exf <-> MITgcm to exf namelist
474    o Adding new verification experiment global_with_exf.
475      This verification experiment is almost identical to the
476      global_ocean.90x40x15 experiment, except that it uses
477      the exf (and cal) package instead of the
478      external_fields_load routine (cf README file).
479    
480    checkpoint46m_post
481    o modified testscript to return -- when there are no lines of "%MON" output
482    o added new flag "quasiHydrostatic" for QH mode
483      and new routine quasihydrostaticterms()
484    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
485      New routine: mom_u_coriolis_nh()
486    o fixed sign of non-hydrostatic metric terms in u and v equations.
487      Depend on correct sign of gravitySign.
488    o added work.pc* to .cvsignore in aim directories using ifc
489    o introduced flag for controllin non-hydrostatic metric terms
490    o removed gravitySign from PARM04
491    o switched to g77/ifc from pgf77 in aim experiments
492    
493    checkpoint46l_post
494    o made convective adjustment work with pressure coordinates:
495     - changed the direction of k-loop in convective_adjustment.F for the
496       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
497     - adjusted the reference pressure k-index in convective_adjustment.F
498     - adjusted the convection condition in convect.F (in analogy to
499       calc_ivdc.F)
500     - convective_adjustment no longer computes anything on the halos
501     - removed the warnings about negative salinity from find_rho.F and
502       find_alpha.F; instead the new routine look_for_neg_salinity, called
503       at the beginning of find_rho, find_alpha, and find_beta, does a
504       check of the entire slice, if CPP-option
505       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
506    checkpoint46l_pre
507    
508    checkpoint46k_post
509    o fixed the verification/global_ocean.90x40x15 experiment:
510     - new bathymetry (the world according to A., JMC, and M.)
511     - new initial fields and forcing fields (*.bin files)
512     - new POLY3.COEFFS (for the next release one should switch to a full
513       equation of state: JMD95P or MDJWF)
514     - fixed several errors and redundancies in the data file
515     - experiment uses looped cells
516     - added matlab directory with diagnostic scripts for plotting of output
517    
518    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
519     - read AIM physics parameters from a file (data.aimphys)
520     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
521    
522    checkpoint46j_post
523    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
524    o move wVel computation at the end of the time step, in S/R integr_continuity
525    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
526    o update timeave pkg for wVel diagnostic.
527    checkpoint46j_pre
528    
529    checkpoint46i_post
530    o Clean up AIM package (and keep the results unchanged):
531      include CPP_OPTION and use IMPLICT NONE in all routines ;
532      declare all the variables _RL ; use _d 0 for all numerical constants.
533      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
534    
535    checkpoint46h_post
536    o cleaned up the use of rhoNil and rhoConst.
537      - rhoNil should only appear in the LINEAR equation of state, everywhere
538        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
539        and the dynamical equations are all divided by rhoConst
540    o introduced new parameter rhoConstFresh, a reference density of fresh
541      water, to remove the fresh water flux's dependence on rhoNil. The default
542      value is 999.8 kg/m^3
543    o cleanup up external_forcing.F and external_forcing_surf.F
544      - can now be used by both OCEANIC and OCEANICP
545    checkpoint46h_pre
546    
547     Added code to convert surface volume flux (fresh water) into
548     a mass flux when using P coordinates in the ocean (OCEANICP).
549     Note: It assumes you have set rho0=rhoConst=density of fresh water.
550    
551    checkpoint46g_post
552    o Include a new diagnostic variable phiHydLow for the ocean model
553      - in z-coordinates, it is the bottom pressure anomaly
554      - in p-coordinates, it is the sea surface elevation
555      - in both cases, these variable have global drift, reflecting the mass
556        drift in z-coordinates and the volume drift in p-coordinates
557      - included time averaging for phiHydLow, be aware of the drift!
558    o depth-dependent computation of Bo_surf for pressure coordinates
559      in the ocean (buoyancyRelation='OCEANICP')
560      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
561        Theta, Salinity, and Pressure in the parameter list. This routine is
562        presently contained in find_rho.F. This routine does not give the
563        correct density for 'POLY3', which would be a z-dependent reference
564        density.
565    o cleaned up find_rho
566      - removed obsolete 'eqn' from the parameter list.
567    o added two new verification experiments: gop and goz
568      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
569    checkpoint46g_pre
570    
571    checkpoint46f_post
572    o Enable tangent linear (forward mode) gradient checks:
573      - extended active file handling to g_... files
574      - added TANGENT_SIMULATION to theSimulationMode
575      - extended grdchk package accordingly
576    o added tangent linear setup in verification/carbon/code_ftl
577    o added adjoint setup in verification/front_relax/code_ad
578    
579    checkpoint46e_post
580    o Added new equation of state -> MDJWF
581      - EOS of McDougall et al., 2002, JAOT, submitted
582      - caveat: the equation of state is only valid for a smaller (more
583        realistic?) range of values than JMD95P/Z and UNESCO
584      - added masks to the calculation of pressure in store_pressure
585      - added more check values for density in check_eos (ini_eos.F), some of
586        the old check values are out of the range of the MDJWF-eos, so don't
587        expect perfect matches for those
588    checkpoint46e_pre
589    
590    checkpoint46d_post
591    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
592      'OCEANICP', also initialised field pressure correctly in ini_eos in the
593      case of pressure coordinates. eosType='JMD95Z' in
594      combination with buoyancyRelation='OCEANICP' now causes an error.
595    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
596      in find_alpha/beta.
597    checkpoint46d_pre
598    
599    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
600      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
601    
602    checkpoint46c_post
603    o Changes necessary for ocean in p-coordinates
604     -  Added new buoyancy relation = 'OCEANICP'
605     -  Added new parameters = gravitySign (this used to be contained inside
606        the factor dRdZ which I added when we first switched to R coordinates).
607     X GM/Redi is not compatible (yet)
608     X bottom drag and no-slip need to be debugged.
609    checkpoint46c_pre
610    
611    checkpoint46b_post
612    o Added new equation of state -> JMD95Z and JMD95P
613      - EOS of Jackett and McDougall, 1995, JAOT
614      - moved all EOS parameters into EOS.h
615      - new routines ini_eos.F, store_pressure.F
616    o Added UNESCO EOS, but not recommended because it requires
617      in-situ temperature (see JMD95)
618    o Modified formatting for knudsen2.f in utils/knudsen2 and added
619      unesco.f to be used with POLY3
620    checkpoint46b_pre
621    
622    checkpoint46a_post
623    o Added (atmospheric) pressure loading
624      - new field in FFIELDS.h, etc...
625      - new cpp flag ATMOSPHERIC_LOADING
626    o Changed hFacC to _hFacC in calc_phi_hyd.F
627    o Added SHORTWAVE_HEATING to some files for consistency
628    checkpoint46a_pre
629    
630    checkpoint46
631    further merges from release1_p5
632    o new ctrl package
633      - adopted from ECCO environment to enable optimization
634      - added Eliassen Palm fluxes to controls
635    o added Eliassen Palm flux controls to gradient check package
636    o cost package
637      - Compatible with new ctrl package
638      - added Eliassen Palm cost hooks
639      - modif's of existing cost functions
640    o Adjoint-related bug fixes in kpp:
641      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
642      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
643    o autodiff package
644      - flow directives:
645        + new for S/R do_the_model_io
646        + enhanced for S/R checkpoint
647        + new gmredi.flow
648      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
649        disable adcommon.h/g_common.h by default.
650      - fixed problem for adjoint of global_max
651    o modified verification/carbon/
652    o New setup for adjoint of global_ocean
653    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
654    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
655    o incorporated hooks for sponge layer code (external_forcing.F)
656    
657    checkpoint45d_post
658    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
659    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
660      (affects plume_on_slope "cg2d" output)
661    o add new parameter deltaTfreesurf for free-surface time stepping
662    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
663    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
664    o change phiMin in exp1 (to agree with documentation)
665    o add new flags:
666     - T,S forcing inside/outside Adams-Bashforth
667     - turn off temp,salt advection and/or forcing
668     - for each tracer, define internal flag for multiDimAdvection & A-B
669    o monitor: change definition of KE to check conservation of Energy
670    
671    checkpoint45c_post
672    o Removed f90 comments ("!")
673    o Modified initialisations to enable exf package for MITgcm
674      (without invoking ECCO_PACKAGE).
675    o modifications to gradient check package (Martin Losch)
676      - enable centered differences
677      - modified format of standard output
678    
679    checkpoint45b_post
680    o cleaned exchange calls in cg2d
681    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
682    o included CPP option SINGLE_LAYER_MODE in thermodynamics
683      to configure barotropic setup (Martin Losch)
684    o moved some initialisations within bi,bj loop in dynamics
685      (TAF flow dependency)
686    o in initialise_varia, moved call packages_init_variables
687      before convective_adjustment_init
688      (corresponding adjustment of TAF tape initialisation).
689    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
690    
691    checkpoint45a_post
692    o compute Rho over the whole domain (extend iMin,jMin indices)
693    o specific exchange for X-slice domain (case Ny=1)
694    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
695    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
696    
697    checkpoint44h_post = checkpoint45
698    o Fix to restore differentiability:
699      place at which packages_init_variables is called in
700      initialise_varia is crucial for reverse control flow.
701    o modifications in GMRedi to enable stable adjoint
702      (corresponding modif's in thermodynamics, dynamics)
703    o added missing hook for sponge layer code in external_forcing
704    o modified test cost functions
705    o storing in gad_advection (plus removal of write(0,*)!
706    o missing headers TR1.h added in convective_adjustment routines
707    o errorMessageUnit set non-equal zero in eeboot
708      (conflict on some platforms, e.g. IBM SP3)
709    o modified carbon verif.
710    
711    checkpoint44h_pre
712    o vertical grid option: allow to put the Interface at the middle between
713      2 cell-centers ; replace delZ in pkg/kpp by drF.
714    o GM Advective form: Tracers are advected using the residual transport (=
715      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
716    
717    checkpoint44g_post
718    o fix surface correction term in multiDimAdvection (affects plume_on_slope
719      results) ; ifdef missing in thermodynamics.F
720    
721    checkpoint44f_pre,checkpoint44f_post
722    o added PTRACERS package
723      This allows an arbitrary number of passive tracers to be integrated
724      forward simultaneously with the dynamicaly model.
725      + Implemented so far:
726        - basic forward algorithm (time-stepping, advection, diffusion, convection)
727        - I/O and checkpointing
728        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
729      + Not implemented so far:
730        - KPP
731        - OBCS
732      + No specific example supplied (yet) but global_ocean.90x40x15 has the
733        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
734        line in data.pkg.
735      + This package is disabled by default since it increases storage.
736    
737    
738    o testscript: added -cleanup option
739    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
740                 b) enable to filter 2D fields.
741    
742    checkpoint44e_pre,post
743    o re-wrote convective adjustment to use pre-calculated weights
744      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
745      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
746      Original calls to convect() still in place.
747    
748    chkpt44d_pre,post
749    o added missing EXCLUDE_MONITOR flags
750    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
751      (incompatible typ in MIN/MAX expressions caused problems
752      on IBM SP3)
753    o in genmake added variable MAKEDEPEND
754      plus resetting for case SunOS
755    o added timer_stats.c routine for IBM SP3
756    o removed variables in dynamics
757    !!! I forgot to create tag chkpt44d_pre !!!
758    !!! But chkpt44d_pre = chkpt44c_post    !!!
759    
760    o real fresh water flux implemented with non-linear free-surface.
761    
762    chkpt44c_pre,post
763    o few fix (mask in shap_s2, EmPmR in external_field_load,
764      USE_NATURAL_BCS in solve_for_P);
765    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
766    
767    checkpoint44b_pre/_post
768    o merge of relevant stuff from the ecco-branch:
769      - genmake: removed $S64 overwrite for case SunOS
770      - pkg/exf: update and corrections for field swapping and obcs
771      - pkg/ecco: parameter lists for the_model_main, the_main_loop
772                  harmonized between ECCO and MITgcm
773      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
774                      updated checkpointing_lev... lists for obcs
775      - model/src: minor changes in forward_step, plot_field
776                   added directive for divided adjoint in the_main_loop
777      - pkg/mdsio: added mdsio_gl_slice
778    
779    o check parameters & config (chkpt44a_pre,post)
780    o OBC and NonLin_FrSurf.
781    
782    checkpoint44
783    o fix bug in mom_vi_del2uv
784    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
785    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
786    o update AIM experiments (NCEP input files)
787    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
788    o added some stuff for AD
789    
790    checkpoint43
791    o added two new advection tests
792    o added global 4x4 degree ocean test
793    o added test of H&S94 with free surface on cube
794    o some final mods for gradient check, adjoint,...
795    
796    checkpoint42
797      Fixed AD-related problems:
798    o Store directives up-to-date with re-arranged Adams-Bashforth
799      (mainly thermodynamics.F)
800    o New store directives for multi-dim. advection schemes
801      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
802      * new common block and key passkey
803      (mainly gad_advection.F)
804    o Modified store directives for split of dynamics/thermodynamics
805      for the case ALLOW_KPP
806    o Cleaned argument list for timestep_tracer.F
807    
808    checkpoint41
809    o re-formatted/added comments in prologues of key subroutines
810      to work with protex
811    
812    checkpoint40
813    o moved calc_gs, calc_gt and calc_tr1 back to model/src
814    o added FLT (floats) package from Arne along with demo. experiment
815    o re-arranged Adams-Bashforth scheme for tracers to allow easier
816      implementation of forward-in-time forcing terms
817    o more mods for non-linear free-surface including new variable
818    o modified multi-dim method to work on cube
819    o bug fix in KPP (from DM)
820    
821    checkpoint40pre9
822    o added DST advection schemes
823    o fix MPI bug on SGI's
824    o modifications for non-linear free-surface
825    o fixed conditionals for fixed flow/passive tracer only mode
826    o added tension/strain form of stress tensor
827    o changes to commenting of arguments for TAF/TAMC
828    o added/updated many matlab scripts
829    o added multi-dimensional advection method for tracers
830      
831    checkpoint40pre8
832    o new package rw/
833      Added method for dumping intermediate local arrays:
834      mdsio_writetile - same as mdsio_writefield except works from inside
835                        bi,bj loop
836      mdsio_writelocal - same as mdsio_writetile except works for local
837                         arrays
838      write_local_r? - higher-level wrapper for mdsio_writelocal
839      Controlled by diagFreq. Defaults to zero (ie. no dumps)
840      Example given at end of mom_vecinv.F that dumps some local arrays.
841    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
842      control flux-form versus vector invariant code.
843      Switch is runtime flag vectorInvariantMomentum (defaults to false)
844      or genmake -DISABLE ...
845    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
846      (additional storing is now needed for case vecinv;
847      currently nothing implemented to switch this storing off
848      in case fluxform is used since no CPP flag available).
849    
850    checkpoint40pre7
851    o bug fix in dynamics.F
852      calc_viscosity called before k=1,Nr loop.
853    o added some #ifdef's ALLOW_PASSIVE_TRACER
854    o cleaned initialisations in ctrl_map_ini
855      related to TAF
856    
857    checkpoint40pre6
858    o split dynamics into thermodynamics & dynamics
859    o corresponding split of calc_diffusivity into
860      calc_diffusivity, calc_viscosity
861      (kpp_calc_diff, kpp_calc_visc).
862    o Added diffkr, kapgm to control variables
863    o bug fix in gmredi_slope_limit for ldd97
864    
865    checkpoint40pre5
866    o proper initialization of Adams-Bashforth time stepping
867      + uses forward step for very first step of model (iter=0)
868    o re-generated *all* output since almost all output is modified by this
869      change (sorry but we've been putting this one off for about 2 years)
870      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
871        *not* regenerated since they are already out of date and I don't
872        want to create the impression that they are suddenly working.
873    o removed KAP stuff for DEC's
874    o modified/added many .cvsignore files in */code and */input
875    o added new expt "solid-body.cs-32x32x1"
876      + this uses an alternative form of ini_curvilinear_grid.F which
877        is not necessarily any better than the current one...
878    
879    checkpoint40pre4
880    o added re-initialisations of utrans,vtrans,rtrans in
881      calc_common_factors which are crucial for TAF.
882    o extended iMin,jMin range for calc_common_factors,
883      calc_diffusivity
884    o added option ALLOW_PASSIVE_TRACER
885    o a few minor updates and fixes
886    
887    checkpoint40pre3
888    o created calc_gtr1.F for gad package
889    o split the_main_loop and re-introduced forward_step
890    o some recomputations of nIter0 for TAMC
891    
892    checkpoint40pre2
893    o Updated to latest branch of AJA, JMC
894    o Added gradient check package
895    o Added routines for passive tracer handling
896    o Added carbon sequestration sensitivity experiment
897    
898    checkpoint39
899     o Modifications and fixes to support TAMC
900       (mainly missing or wrong directives)
901     o Corrected common blocks when fooling TAMC to produce adjoint I/O
902       in addummy_in_stepping
903     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
904     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
905     o Included following packages:
906       cal: calendar
907       exf: external forcing
908       ecco: essential routines to control use of cal, exf
909             (NB: this is not the full ECCO environment)
910     o disabled some packages by default in genmake
911    
912    checkpoint38
913     o see notes_c37_adj.txt
914     o corrected wrong layer index in external_forcing_t
915     o replaced the_main_loop/forward_step by the_main_loop
916     o removed forceoutput from write_state
917       (replaced criteria for initial/final state)
918     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
919    
920    checkpoint37
921     o mdsio.F routine split and packaged in pkg/mdsio
922       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
923        used unless genmake -disable=mdsio)
924     o allow a more precise surface-geopotential gradient for the atmosphere
925       taking into account the change in space of Alpha (=1/rho) at the surface.
926     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
927       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
928     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
929       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
930       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
931     o Time-Average diagnostics defined as a pseudo package "timeave".
932     o pickup files : old pickup (before c35) did not work with new code (c35
933       and after) unless activating 2 commented lines in initialise-varia.
934     o Non-Hydrostatic pickup file Pb fixed.
935     o bug with Rigid-lid version (since c35) fixed.  
936    
937    checkpoint36
938     o implement Crank-Nickelson barotropic time-stepping
939     o recover Time-Average diagnostics
940     o fix Pb in checkpoint (PR#19)
941     o AIM become a standard package ; clean unused CPP_kees
942    
943  checkpoint35  checkpoint35
944   o subtantial rewrite of dynamics.f   o subtantial rewrite of dynamics.f
945   o allows staggered time-stepping   o allows staggered time-stepping

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