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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.131 by jmc, Sun Feb 9 03:01:58 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 New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
7    
8    checkpoint48d_post
9    o in preparation for r*:
10     a) use pre-computed gradient of hydrostatic potential:
11        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
12     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
13        => affects results of glob_oce_pressure (different truncation error)  
14      update output.txt of ideal_2D_oce & global_ocean_pressure
15    
16    checkpoint48d_pre
17    o in preparation for r*:
18      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
19      pass the 2 comp. of the grad. as arguments to momentum S/R.
20      but for the moment, only used if it does not change the results.
21    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
22    
23    checkpoint48c_post
24    Modifications in treatment of initial flux forcing controls
25    to avoid extra storing of flux fields.
26    
27    checkpoint48c_pre
28    o Added tidal_basin_2d experiment (currently 1D!)
29    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
30    
31    checkpoint48b_post
32    o r* coordinate added in #ifdef NONLIN_FRSURF block.
33     (modification to pressure gradient not yet implemented)
34    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
35      (for U & V) that are used for vertical advection of momentum.
36    
37    checkpoint48a_post
38    o In preparation for r*, use temp. array to compute vertical transport
39       in flux-form momentum pkg. => change results of few test-exp.
40      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
41                        lab_sea, natl_box & plume_on_slope
42    
43    checkpoint48
44    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
45    
46    checkpoint47j_post
47    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
48    o moved adexch from forward_step to addummy_in_stepping
49    o added exch in ctrl_map_...
50    o aveFreq.=0. at end of cost_final to avoid overwrite in
51      reverse checkpointing loop
52    o Yet more changes in gmredi:
53      * adgmredi_calc_tensor
54        avoiding all recomputation of gmredi_slope_limit
55      * adgmredi_x/y/rtransport
56        added flag for excessive storing to avoid recomp. of
57        u/v/rtans, dTdx/y/z
58        -> this is not really necessary and very memory-consuming
59      * adgmredi_slope_psi:
60        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
61      * gmredi_slope_limit
62        re-activated full calculation of taperfct for case 'ac02'
63    o updating verification/ adjoints of carbon, global_ocean.90x40x15
64    
65    checkpoint47i_post
66    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
67    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
68      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
69    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
70    o gmredi: fix few bugs.
71    
72    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
73    This will be a good checkpoint to plug into the ecco-branch.
74    o few modif.'s to get latest version adjointed
75      (mainly kick out code in ini_linear_phisurf)
76    o modif's to run adjoint with exactConserv
77    o case GM_BOLUS_ADVEC should be cleaned
78      S/R gmredi_slope_psi should be cleaned
79    o verification/carbon now has exactConserv=.TRUE.
80    
81    checkpoint47g_post
82    o time-average AIM output: becomes independent from statvars time-average
83      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
84    o After TAF bug fix:
85      Tested adjoint of gmredi package.
86      Tests were done with checkpoint47 rather than with latest
87      checkpoint47f_post since the latter is broken for the adjoint
88      verification/carbon/ contains both ADM and TLM gradient checks.
89    Here they are, before they get changed/lost/stolen.
90    Mostly modif.'s to fix numerical sensitivities.
91    Gradient checks OK for
92    - GM_taper_scheme:
93      * clipping
94      * ac02
95      * linear
96      * glw91
97      * dm95
98      * ldd97
99    - GMREDI_OPTIONS:
100      * GM_VISBECK_VARIABLE_K
101      * GM_NON_UNITY_DIAGONAL
102      * GM_EXTRA_DIAGONAL
103      * GM_BOLUS_ADVEC
104    in conjunction with data.gmredi parameters to be checked in
105    in a few minutes under verification/carbon/code/
106    
107    checkpoint47f_post
108    Merging from release1_p10:
109    o modifications for using pkg/exf with pkg/seaice
110      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
111        and SEAICE_EXTERNAL_FLUXES
112      - pkg/exf CPP options EXF_READ_EVAP and
113        EXF_NO_BULK_COMPUTATIONS
114      - usage examples are Experiments 8 and 9 in
115        verification/lab_sea/README
116      - verification/lab_sea default experiment now uses
117        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
118    
119    checkpoint47e_post
120    o created a tag prior to creating a branch
121    
122    checkpoint47d_post
123    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
124      at the bottom boundary had an erroneous half slip boundary condition
125    o added bottom drag and no slip boundary condition capabilities to
126      oceanic pressure coordinates code
127    o added new verification experiment global_ocean_pressure, this experiment is
128      also described in the tutorial section of the manual
129    checkpoint47d_pre
130    
131    checkpoint47c_post
132    o Added a verification experiment for a global cubed-sphere ocean run
133      -  verification/global_ocean.cubed32x32x30
134      -  uses pkg/therm_seaice and pkg/bulk_forcing
135    
136    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
137    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
138      when using P-coordinate; only implemented for atmospheric config.
139    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
140      NOTES: requires option NONLIN_FRSURF to be "#define".
141    o update advect_xz/results/output.txt (left from checkpoint44g_post)
142    
143    checkpoint47b_post
144    Merging from release1_p9:
145    o pkg/seaice
146      - removed GOTO's and added taf directives
147      - double precision constants to reduce the g77 (Linux)
148        to F77 (SGI) differences reported in release1_p8
149    o tools/genmake
150      - added SGI options
151    o verification/testscript
152      - updated to that of checkpoint47a_post
153    o verification/global_ocean.90x40x15/input/eedata
154      - modified for SGI f77 compatibility
155    o verification/lab_sea
156      - added description of sea-ice model
157      - added missing matlab routines
158      - added test of thermodynamics parallelization
159    
160    checkpoint47a_post
161    o new pkg: aim_v23
162     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
163       for now, keep the same surface forcing as before.
164     - Part-Cell implemented into AIM; check that Heat & Water are conserved
165     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
166     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
167    o add diagnostic of surface correction term in monitor output
168    
169    o bulk_force and therm_seaice
170    - Two packages:  bulk_force (Bulk forcing)
171      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
172    - Earlier integration from Stephaine Dutkiewicz
173      and Patrick Heimbach.
174    - Two ifdef statements for compile time,
175       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
176    
177    checkpoint47
178    differentiable version of checkpoint46n_post
179    o bug fix in quasihydrostaticterms
180    o * "clean" adjoint code (in terms of extensive recomputations)
181        can now be obtained for all GMREDI options (i.e. for
182        - GM_VISBECK_VARIABLE_K
183        - GM_NON_UNITY_DIAGONAL
184        - GM_EXTRA_DIAGONAL
185        - GM_BOLUS_ADVEC )
186      * However, wrong gradient check problem remains unsolved.
187      * New CPP options have been introduced for different
188        tapering schemes
189    o external_fields_load now part of differentiation list
190    o pressure needs multiple storing;
191      would be nice to have store_pressure at beginning or
192      end of forward_step, e.g. by having phiHyd global (5-dim.)
193      (NB: pressure is needed for certain cases in find_rho,
194      which is also invoked through convective_adjustment).
195    o recomputations in find_rho for cases
196     'JMD95'/'UNESCO' or 'MDJWF' are OK.
197    o #define ATMOSPHERIC_LOADING should be differentiable
198    o ini_forcing shifted to begining of initialise_varia
199    o Incorporating QNVS line search routines into MITgcm
200      (this is separate code, and therefore not under pkg)
201      lsopt/, optim/
202    o Updated verification/carbon/
203      - #define GM_VISBECK_VARIABLE_K
204      - GM_taper_scheme    = 'ldd97'    
205    
206    checkpoint46n_post
207    Merging from release1_p8:
208    o verification/natl_box:
209      updating new external_fields_load routine
210    o New package: pkg/seaice
211      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
212      The sea-ice code is based on Hibler (1979-1980).
213      Two sea-ice dynamic solvers, ADI and LSR, are included.
214      In addition to computing prognostic sea-ice variables and diagnosing
215      the forcing/external data fields that drive the ocean model,
216      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
217      The implied surface heat flux is then stored in variable
218      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
219      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
220      non-local transport term.  Because this call precedes model
221      thermodynamics, temperature under sea-ice may not be "exactly" at
222      the freezing point by the time theta is dumped or time-averaged.
223      N.B.: fairly large differences in accuracy occur across
224            different platforms/compilers; comparison between
225            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
226            generated output gives:
227       T           S           U           V
228      C D M    c        m  s        m  s        m  s        m  s
229      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
230      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
231      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
232    
233      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
234    o GAD:
235      - generated new common blocks to account for call of
236        same gad routines with differing traceridentities
237        (needed to modify tracerIdentity indices in GAD.h)
238      - generated separate common blocks for case useCubedSphereExchange
239        (Department of Futurology)
240      - parameter lists to gmredi_?transport: added tracerIdentity
241      - added new key indices to tamc.h
242    o external_fields_load:
243      - added this routine to TAF list
244      - needed to make some common blocks global and additional storing
245        along the same lines as exf package (checkpoint_lev?_directives.h)
246    o exf:
247      updated external forcing package
248      - bug fixes carried over from ecco-branch
249        (missing OBCS_OPTIONS.h in two routines)
250      - enable easy to use "no forcing".
251      - added exf I/O for atmospheric loading
252      - added exf I/O for runoff data
253      - transfered scaling between exf <-> MITgcm to exf namelist
254    o Adding new verification experiment global_with_exf.
255      This verification experiment is almost identical to the
256      global_ocean.90x40x15 experiment, except that it uses
257      the exf (and cal) package instead of the
258      external_fields_load routine (cf README file).
259    
260    checkpoint46m_post
261    o modified testscript to return -- when there are no lines of "%MON" output
262    o added new flag "quasiHydrostatic" for QH mode
263      and new routine quasihydrostaticterms()
264    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
265      New routine: mom_u_coriolis_nh()
266    o fixed sign of non-hydrostatic metric terms in u and v equations.
267      Depend on correct sign of gravitySign.
268    o added work.pc* to .cvsignore in aim directories using ifc
269    o introduced flag for controllin non-hydrostatic metric terms
270    o removed gravitySign from PARM04
271    o switched to g77/ifc from pgf77 in aim experiments
272    
273    checkpoint46l_post
274    o made convective adjustment work with pressure coordinates:
275     - changed the direction of k-loop in convective_adjustment.F for the
276       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
277     - adjusted the reference pressure k-index in convective_adjustment.F
278     - adjusted the convection condition in convect.F (in analogy to
279       calc_ivdc.F)
280     - convective_adjustment no longer computes anything on the halos
281     - removed the warnings about negative salinity from find_rho.F and
282       find_alpha.F; instead the new routine look_for_neg_salinity, called
283       at the beginning of find_rho, find_alpha, and find_beta, does a
284       check of the entire slice, if CPP-option
285       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
286    checkpoint46l_pre
287    
288    checkpoint46k_post
289    o fixed the verification/global_ocean.90x40x15 experiment:
290     - new bathymetry (the world according to A., JMC, and M.)
291     - new initial fields and forcing fields (*.bin files)
292     - new POLY3.COEFFS (for the next release one should switch to a full
293       equation of state: JMD95P or MDJWF)
294     - fixed several errors and redundancies in the data file
295     - experiment uses looped cells
296     - added matlab directory with diagnostic scripts for plotting of output
297    
298    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
299     - read AIM physics parameters from a file (data.aimphys)
300     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
301    
302    checkpoint46j_post
303    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
304    o move wVel computation at the end of the time step, in S/R integr_continuity
305    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
306    o update timeave pkg for wVel diagnostic.
307    checkpoint46j_pre
308    
309    checkpoint46i_post
310    o Clean up AIM package (and keep the results unchanged):
311      include CPP_OPTION and use IMPLICT NONE in all routines ;
312      declare all the variables _RL ; use _d 0 for all numerical constants.
313      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
314    
315    checkpoint46h_post
316    o cleaned up the use of rhoNil and rhoConst.
317      - rhoNil should only appear in the LINEAR equation of state, everywhere
318        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
319        and the dynamical equations are all divided by rhoConst
320    o introduced new parameter rhoConstFresh, a reference density of fresh
321      water, to remove the fresh water flux's dependence on rhoNil. The default
322      value is 999.8 kg/m^3
323    o cleanup up external_forcing.F and external_forcing_surf.F
324      - can now be used by both OCEANIC and OCEANICP
325    checkpoint46h_pre
326    
327     Added code to convert surface volume flux (fresh water) into
328     a mass flux when using P coordinates in the ocean (OCEANICP).
329     Note: It assumes you have set rho0=rhoConst=density of fresh water.
330    
331    checkpoint46g_post
332    o Include a new diagnostic variable phiHydLow for the ocean model
333      - in z-coordinates, it is the bottom pressure anomaly
334      - in p-coordinates, it is the sea surface elevation
335      - in both cases, these variable have global drift, reflecting the mass
336        drift in z-coordinates and the volume drift in p-coordinates
337      - included time averaging for phiHydLow, be aware of the drift!
338    o depth-dependent computation of Bo_surf for pressure coordinates
339      in the ocean (buoyancyRelation='OCEANICP')
340      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
341        Theta, Salinity, and Pressure in the parameter list. This routine is
342        presently contained in find_rho.F. This routine does not give the
343        correct density for 'POLY3', which would be a z-dependent reference
344        density.
345    o cleaned up find_rho
346      - removed obsolete 'eqn' from the parameter list.
347    o added two new verification experiments: gop and goz
348      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
349    checkpoint46g_pre
350    
351    checkpoint46f_post
352    o Enable tangent linear (forward mode) gradient checks:
353      - extended active file handling to g_... files
354      - added TANGENT_SIMULATION to theSimulationMode
355      - extended grdchk package accordingly
356    o added tangent linear setup in verification/carbon/code_ftl
357    o added adjoint setup in verification/front_relax/code_ad
358    
359    checkpoint46e_post
360    o Added new equation of state -> MDJWF
361      - EOS of McDougall et al., 2002, JAOT, submitted
362      - caveat: the equation of state is only valid for a smaller (more
363        realistic?) range of values than JMD95P/Z and UNESCO
364      - added masks to the calculation of pressure in store_pressure
365      - added more check values for density in check_eos (ini_eos.F), some of
366        the old check values are out of the range of the MDJWF-eos, so don't
367        expect perfect matches for those
368    checkpoint46e_pre
369    
370    checkpoint46d_post
371    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
372      'OCEANICP', also initialised field pressure correctly in ini_eos in the
373      case of pressure coordinates. eosType='JMD95Z' in
374      combination with buoyancyRelation='OCEANICP' now causes an error.
375    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
376      in find_alpha/beta.
377    checkpoint46d_pre
378    
379    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
380      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
381    
382    checkpoint46c_post
383    o Changes necessary for ocean in p-coordinates
384     -  Added new buoyancy relation = 'OCEANICP'
385     -  Added new parameters = gravitySign (this used to be contained inside
386        the factor dRdZ which I added when we first switched to R coordinates).
387     X GM/Redi is not compatible (yet)
388     X bottom drag and no-slip need to be debugged.
389    checkpoint46c_pre
390    
391    checkpoint46b_post
392    o Added new equation of state -> JMD95Z and JMD95P
393      - EOS of Jackett and McDougall, 1995, JAOT
394      - moved all EOS parameters into EOS.h
395      - new routines ini_eos.F, store_pressure.F
396    o Added UNESCO EOS, but not recommended because it requires
397      in-situ temperature (see JMD95)
398    o Modified formatting for knudsen2.f in utils/knudsen2 and added
399      unesco.f to be used with POLY3
400    checkpoint46b_pre
401    
402    checkpoint46a_post
403    o Added (atmospheric) pressure loading
404      - new field in FFIELDS.h, etc...
405      - new cpp flag ATMOSPHERIC_LOADING
406    o Changed hFacC to _hFacC in calc_phi_hyd.F
407    o Added SHORTWAVE_HEATING to some files for consistency
408    checkpoint46a_pre
409    
410    checkpoint46
411    further merges from release1_p5
412    o new ctrl package
413      - adopted from ECCO environment to enable optimization
414      - added Eliassen Palm fluxes to controls
415    o added Eliassen Palm flux controls to gradient check package
416    o cost package
417      - Compatible with new ctrl package
418      - added Eliassen Palm cost hooks
419      - modif's of existing cost functions
420    o Adjoint-related bug fixes in kpp:
421      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
422      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
423    o autodiff package
424      - flow directives:
425        + new for S/R do_the_model_io
426        + enhanced for S/R checkpoint
427        + new gmredi.flow
428      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
429        disable adcommon.h/g_common.h by default.
430      - fixed problem for adjoint of global_max
431    o modified verification/carbon/
432    o New setup for adjoint of global_ocean
433    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
434    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
435    o incorporated hooks for sponge layer code (external_forcing.F)
436    
437    checkpoint45d_post
438    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
439    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
440      (affects plume_on_slope "cg2d" output)
441    o add new parameter deltaTfreesurf for free-surface time stepping
442    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
443    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
444    o change phiMin in exp1 (to agree with documentation)
445    o add new flags:
446     - T,S forcing inside/outside Adams-Bashforth
447     - turn off temp,salt advection and/or forcing
448     - for each tracer, define internal flag for multiDimAdvection & A-B
449    o monitor: change definition of KE to check conservation of Energy
450    
451    checkpoint45c_post
452    o Removed f90 comments ("!")
453    o Modified initialisations to enable exf package for MITgcm
454      (without invoking ECCO_PACKAGE).
455    o modifications to gradient check package (Martin Losch)
456      - enable centered differences
457      - modified format of standard output
458    
459    checkpoint45b_post
460    o cleaned exchange calls in cg2d
461    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
462    o included CPP option SINGLE_LAYER_MODE in thermodynamics
463      to configure barotropic setup (Martin Losch)
464    o moved some initialisations within bi,bj loop in dynamics
465      (TAF flow dependency)
466    o in initialise_varia, moved call packages_init_variables
467      before convective_adjustment_init
468      (corresponding adjustment of TAF tape initialisation).
469    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
470    
471    checkpoint45a_post
472    o compute Rho over the whole domain (extend iMin,jMin indices)
473    o specific exchange for X-slice domain (case Ny=1)
474    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
475    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
476    
477    checkpoint44h_post = checkpoint45
478    o Fix to restore differentiability:
479      place at which packages_init_variables is called in
480      initialise_varia is crucial for reverse control flow.
481    o modifications in GMRedi to enable stable adjoint
482      (corresponding modif's in thermodynamics, dynamics)
483    o added missing hook for sponge layer code in external_forcing
484    o modified test cost functions
485    o storing in gad_advection (plus removal of write(0,*)!
486    o missing headers TR1.h added in convective_adjustment routines
487    o errorMessageUnit set non-equal zero in eeboot
488      (conflict on some platforms, e.g. IBM SP3)
489    o modified carbon verif.
490    
491    checkpoint44h_pre
492    o vertical grid option: allow to put the Interface at the middle between
493      2 cell-centers ; replace delZ in pkg/kpp by drF.
494    o GM Advective form: Tracers are advected using the residual transport (=
495      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
496    
497    checkpoint44g_post
498    o fix surface correction term in multiDimAdvection (affects plume_on_slope
499      results) ; ifdef missing in thermodynamics.F
500    
501    checkpoint44f_pre,checkpoint44f_post
502    o added PTRACERS package
503      This allows an arbitrary number of passive tracers to be integrated
504      forward simultaneously with the dynamicaly model.
505      + Implemented so far:
506        - basic forward algorithm (time-stepping, advection, diffusion, convection)
507        - I/O and checkpointing
508        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
509      + Not implemented so far:
510        - KPP
511        - OBCS
512      + No specific example supplied (yet) but global_ocean.90x40x15 has the
513        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
514        line in data.pkg.
515      + This package is disabled by default since it increases storage.
516    
517    
518    o testscript: added -cleanup option
519    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
520                 b) enable to filter 2D fields.
521    
522    checkpoint44e_pre,post
523    o re-wrote convective adjustment to use pre-calculated weights
524      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
525      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
526      Original calls to convect() still in place.
527    
528    chkpt44d_pre,post
529    o added missing EXCLUDE_MONITOR flags
530    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
531      (incompatible typ in MIN/MAX expressions caused problems
532      on IBM SP3)
533    o in genmake added variable MAKEDEPEND
534      plus resetting for case SunOS
535    o added timer_stats.c routine for IBM SP3
536    o removed variables in dynamics
537    !!! I forgot to create tag chkpt44d_pre !!!
538    !!! But chkpt44d_pre = chkpt44c_post    !!!
539    
540    o real fresh water flux implemented with non-linear free-surface.
541    
542    chkpt44c_pre,post
543    o few fix (mask in shap_s2, EmPmR in external_field_load,
544      USE_NATURAL_BCS in solve_for_P);
545    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
546    
547    checkpoint44b_pre/_post
548    o merge of relevant stuff from the ecco-branch:
549      - genmake: removed $S64 overwrite for case SunOS
550      - pkg/exf: update and corrections for field swapping and obcs
551      - pkg/ecco: parameter lists for the_model_main, the_main_loop
552                  harmonized between ECCO and MITgcm
553      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
554                      updated checkpointing_lev... lists for obcs
555      - model/src: minor changes in forward_step, plot_field
556                   added directive for divided adjoint in the_main_loop
557      - pkg/mdsio: added mdsio_gl_slice
558    
559    o check parameters & config (chkpt44a_pre,post)
560    o OBC and NonLin_FrSurf.
561    
562    checkpoint44
563    o fix bug in mom_vi_del2uv
564    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
565    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
566    o update AIM experiments (NCEP input files)
567    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
568    o added some stuff for AD
569    
570    checkpoint43
571    o added two new advection tests
572    o added global 4x4 degree ocean test
573    o added test of H&S94 with free surface on cube
574    o some final mods for gradient check, adjoint,...
575    
576    checkpoint42
577      Fixed AD-related problems:
578    o Store directives up-to-date with re-arranged Adams-Bashforth
579      (mainly thermodynamics.F)
580    o New store directives for multi-dim. advection schemes
581      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
582      * new common block and key passkey
583      (mainly gad_advection.F)
584    o Modified store directives for split of dynamics/thermodynamics
585      for the case ALLOW_KPP
586    o Cleaned argument list for timestep_tracer.F
587    
588    checkpoint41
589    o re-formatted/added comments in prologues of key subroutines
590      to work with protex
591    
592    checkpoint40
593    o moved calc_gs, calc_gt and calc_tr1 back to model/src
594    o added FLT (floats) package from Arne along with demo. experiment
595    o re-arranged Adams-Bashforth scheme for tracers to allow easier
596      implementation of forward-in-time forcing terms
597    o more mods for non-linear free-surface including new variable
598    o modified multi-dim method to work on cube
599    o bug fix in KPP (from DM)
600    
601    checkpoint40pre9
602    o added DST advection schemes
603    o fix MPI bug on SGI's
604    o modifications for non-linear free-surface
605    o fixed conditionals for fixed flow/passive tracer only mode
606    o added tension/strain form of stress tensor
607    o changes to commenting of arguments for TAF/TAMC
608    o added/updated many matlab scripts
609    o added multi-dimensional advection method for tracers
610      
611    checkpoint40pre8
612    o new package rw/
613      Added method for dumping intermediate local arrays:
614      mdsio_writetile - same as mdsio_writefield except works from inside
615                        bi,bj loop
616      mdsio_writelocal - same as mdsio_writetile except works for local
617                         arrays
618      write_local_r? - higher-level wrapper for mdsio_writelocal
619      Controlled by diagFreq. Defaults to zero (ie. no dumps)
620      Example given at end of mom_vecinv.F that dumps some local arrays.
621    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
622      control flux-form versus vector invariant code.
623      Switch is runtime flag vectorInvariantMomentum (defaults to false)
624      or genmake -DISABLE ...
625    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
626      (additional storing is now needed for case vecinv;
627      currently nothing implemented to switch this storing off
628      in case fluxform is used since no CPP flag available).
629    
630    checkpoint40pre7
631    o bug fix in dynamics.F
632      calc_viscosity called before k=1,Nr loop.
633    o added some #ifdef's ALLOW_PASSIVE_TRACER
634    o cleaned initialisations in ctrl_map_ini
635      related to TAF
636    
637    checkpoint40pre6
638    o split dynamics into thermodynamics & dynamics
639    o corresponding split of calc_diffusivity into
640      calc_diffusivity, calc_viscosity
641      (kpp_calc_diff, kpp_calc_visc).
642    o Added diffkr, kapgm to control variables
643    o bug fix in gmredi_slope_limit for ldd97
644    
645    checkpoint40pre5
646    o proper initialization of Adams-Bashforth time stepping
647      + uses forward step for very first step of model (iter=0)
648    o re-generated *all* output since almost all output is modified by this
649      change (sorry but we've been putting this one off for about 2 years)
650      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
651        *not* regenerated since they are already out of date and I don't
652        want to create the impression that they are suddenly working.
653    o removed KAP stuff for DEC's
654    o modified/added many .cvsignore files in */code and */input
655    o added new expt "solid-body.cs-32x32x1"
656      + this uses an alternative form of ini_curvilinear_grid.F which
657        is not necessarily any better than the current one...
658    
659    checkpoint40pre4
660    o added re-initialisations of utrans,vtrans,rtrans in
661      calc_common_factors which are crucial for TAF.
662    o extended iMin,jMin range for calc_common_factors,
663      calc_diffusivity
664    o added option ALLOW_PASSIVE_TRACER
665    o a few minor updates and fixes
666    
667    checkpoint40pre3
668    o created calc_gtr1.F for gad package
669    o split the_main_loop and re-introduced forward_step
670    o some recomputations of nIter0 for TAMC
671    
672    checkpoint40pre2
673    o Updated to latest branch of AJA, JMC
674    o Added gradient check package
675    o Added routines for passive tracer handling
676    o Added carbon sequestration sensitivity experiment
677    
678    checkpoint39
679     o Modifications and fixes to support TAMC
680       (mainly missing or wrong directives)
681     o Corrected common blocks when fooling TAMC to produce adjoint I/O
682       in addummy_in_stepping
683     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
684     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
685     o Included following packages:
686       cal: calendar
687       exf: external forcing
688       ecco: essential routines to control use of cal, exf
689             (NB: this is not the full ECCO environment)
690     o disabled some packages by default in genmake
691    
692    checkpoint38
693     o see notes_c37_adj.txt
694     o corrected wrong layer index in external_forcing_t
695     o replaced the_main_loop/forward_step by the_main_loop
696     o removed forceoutput from write_state
697       (replaced criteria for initial/final state)
698     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
699    
700    checkpoint37
701     o mdsio.F routine split and packaged in pkg/mdsio
702       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
703        used unless genmake -disable=mdsio)
704     o allow a more precise surface-geopotential gradient for the atmosphere
705       taking into account the change in space of Alpha (=1/rho) at the surface.
706     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
707       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
708     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
709       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
710       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
711     o Time-Average diagnostics defined as a pseudo package "timeave".
712     o pickup files : old pickup (before c35) did not work with new code (c35
713       and after) unless activating 2 commented lines in initialise-varia.
714     o Non-Hydrostatic pickup file Pb fixed.
715     o bug with Rigid-lid version (since c35) fixed.  
716    
717    checkpoint36
718     o implement Crank-Nickelson barotropic time-stepping
719     o recover Time-Average diagnostics
720     o fix Pb in checkpoint (PR#19)
721     o AIM become a standard package ; clean unused CPP_kees
722    
723    checkpoint35
724     o subtantial rewrite of dynamics.f
725     o allows staggered time-stepping
726     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
727     o added bottom drag (linear + quadratic)
728    
729    checkpoint34
730     o Modified exchange routines for correct reverse simulation.
731     o Added verification output to comply with bug fix in impldiff.F
732       as of c33 (exp2, natl_box).
733     o Corrected store directives in dynamics.F
734     o Corrected array boundaries in impldiff.F
735     o Corrected array dimensions in gmredi.
736       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
737     o Added routine GLOBAL_SUM_INT to global_sum.F
738     o Added mdsio_gl.F for ECCO purposes.
739    
740    checkpoint33
741     o Fixed bug in lower BC in impldiff.F
742     o Fixed confusion about units of forcing arrays in FFIELDS.h
743       namely Fu,Fv,Qnet,Qsw,EmPmR:
744       - Removed verification/natl_box/code/external_fields_scale.F
745         (did not differ from that in model/src)
746       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
747         (see FFIELDS.h for description)
748       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
749         kpp_calc.F and kpp_transport_t.F
750       - Removed model/src/external_fields_scale.F and calls to it
751       - verification/natl_box uses flux data with "atmospheric" sign so
752         a special version of external_fields_load.F is used to
753         change the data as it's read in. This way, the arrays
754         have the right units and signs at all times tha a user could
755         possibly use them.
756     o Corrected genmake to delete a temporary file during configuration
757    
758    checkpoint32
759     o Scaling of forcing fields moved from external_forcing.F to
760       external_fields_scale.F, called directly after loading fields.
761     o Surface relaxation terms added to surface tendency fields in
762       extra subroutine.
763     o impldiff.F changed to avoid storing by TAMC of huge intermediate
764       fields.
765     o Changes in GMRedi to comply with packaging structure.
766     o Modifications and bug fixes in KPP package.
767     o Verification experiment for KPP added (verification/nat_box/)
768    
769    checkpoint31
770     o Packages interface brought in line with defined standard
771       -> new routines packages_...F
772       -> changes in initialise_fixed.F, initialise_varia.F
773       -> enables initialisation interface for ECCO package
774     o Rescaling of external forcing fields immediately after read
775       (removed from external_forcing.F)
776       -> new: surface_fields_scale.F
777       -> affects ini_foorcing.F, external_fields_load.F
778     o Computation of surface tendencies before tendency updates.
779       -> new: external_forcing_surf.F
780     o Change of variable names useGMRedi, useKPP, useECCO
781     o Further changes in dynamics.F, impldiff.F for TAMC
782     o Tested for experiments 0, 2, 4.
783       - not yet tested for GMRedi.
784       - not yet tested for KPP.
785    
786    checkpoint30
787     o Updates for OBCs
788     o New experiment for test OBCs (internal_wave)
789     o New output.txt in verification/exp4/results/
790     o Updates for KPP: calculation of viscosity corrected, new variables
791       kpp_dumpFreq and kpp_taveFreq
792     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
793       and entry for T90 in genmake
794    
795    checkpoint29
796     o packaged KPP and GM/Redi
797    
798    checkpoint28
799     o Corrected initialization of hFacMin for difference vertical coordinates
800     o Modified calculation of partial cell thickness to more robust algorithm
801     o config_summary.F: replaced write_1D_... by write_0D_...
802       read_write.F: added subroutines write_0D_...
803     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
804       included some initialisations required for TAMC.
805     o routine calc_isoslopes: modified sqrt computation to make it
806       differentiable for zero argument.
807     o routines dynamics, impldiff:
808       included store directives and tape key computations required for TAMC.
809     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
810    
811    checkpoint27
812     o fixed calc_isoslopes() to so that cancellation of terms in tensor
813       formulation works properly with variable resolution.
814     o restructured the calling tree between the_model_main() and dynamics()
815     o split initialise() into initialise_fixed() and initialise_varia()
816     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
817       in new routine ini_psurf()
818    
819    checkpoint26
820     o moved some #ifdef in optional routines to encompass everything
821       except the argument declarations. This was using up some memory.
822     o fixed macros like _ADT to work with both versions of Linux cpp
823     o cleaned up some unused and uninitialized variables
824       (helps when debugging with strict compile options)
825     o split up CPP_EEOPTIONS.h into options and macros
826       (macros are now in eesupp/inc/CPP_EEMACROS.h)
827     o patch for 2 processor JAM mode
828    
829    checkpoint25
830     o updates for OBCs and NH
831     o dramatically reduced memory usage
832     o added "JAM" routines for use on Artic network
833     o parameterization of convection by implicit vertical diffusion
834     o added a diagnostic of convective index
835     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
836       (this is was partly for OBCs and NH but also in anticipation of
837        an explicit free-surface option)
838     o initial state input files for U and V
839    
840    checkpoint24
841     o Removed some spurious "REAL"s
842     o Updated KPP to latest version from JPL
843     o Added a COS(latitude) in horizontal viscosity
844    
845    checkpoint23
846     o Added del^4 diffusion for salt and temperature
847     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
848    
849    checkpoint22
850     o Made many small changes: implicit none, format(i5), etc...
851     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
852    
853    checkpoint21
854     o Introduced new I/O package that supports direct-access records (mdsio.F)
855     o Split-up mid-level I/O routines
856     o Updated input data for experiments 0,1,2,4 and 5
857     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
858    
859    checkpoint20
860     o Tidied up open-boundaries some more
861     o Added non-hydrostatic code
862     o Fixed some input data
863     o Modified MPI start-up to work in "coupled" context.
864    
865    checkpoint19
866     o Tidied up directory structure for verification experiments.
867     o Added new code for open boundaries.
868     o Corrected advective terms near boundaries.
869     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
870     o Implemented free-slip/no-slip BCs and del^4 dissipation.
871     o Split default parameters out of ini_parms.F into set_defaults.F.
872    
873    checkpoint18
874     o Further changes for optional code generation with
875       CPP - ugh!
876    
877    checkpoint17
878     o Beginning to incorporating modularity
879       for supporting atmos. and ocean configs.
880     o Small changes for TAMC complinace
881     o New ultra simple test case. Barotropic box
882       configuration "exp0".
883    
884    checkpoint16
885     o Minor changes to exchange routines to support
886       accumulation in reverse mode. Adjoint of an
887       assignment is an addition.
888     o Changes to support compilation by TAMC (LR(1)
889       syntax) and by g77 under Linux ( 72 character
890       limit ).
891    
892    checkpoint15
893     Rewrote exchange routines to allow
894     o General tile <-> tile connectivity.
895     o TAMC reverse mode flag ( is this really needed? )
896     o Variable width overlap and exchange region widths.
897     o Hooks for sharing data via DMA, Arctic, Memory Channel,
898       shmput/shmget, VIA, SYSV shmem and every other cool
899       communication method.
900    
901    checkpoint14
902     Consistent isomorphism chages made. These allow dynamical core
903     to support both pressure and meters as a vertical coordinate.
904    
905    checkpoint13
906     Release which corrects global_max problem and a couple
907     of KGM time-averaging diagnostic errors. Also contains
908     a double-gyre experiment setup as well as the baseline
909     4 degree global template. The double gyre template is
910     organised to allow it to be applied automatically to
911     the baseline configuration.
912    
913    branch-point-rdot
914     A few tidy-ups have been made bt the real point of this
915     check-point (excuse the pun) is to allow a branch to be
916     made for the purposes of adding the rDot alterations.
917     I don't want to commit the rDot to the main-trunk until
918     we've actually tested it...
919    
920    checkpoint12
921     Tidy up and added generic genmake script (formerly
922     configure script).
923     Released to testers.
924    
925    checkpoint11
926     Re-arranged initialise() and introduced ini_vertical_grid()
927     and ini_masks_etc().
928    
929  checkpoint10  checkpoint10
930   Introduced the configure script.   Introduced the configure script.
931   Separated out the diags package.   Separated out the diags package.

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