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revision 1.15 by cnh, Wed Oct 28 03:23:17 1998 UTC revision 1.133 by jmc, Wed Feb 12 17:06:01 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint48e_post
7    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
8    o dynamics: change definition of computational domain & adapt mom_fluxform
9      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
10    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
11        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
12        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
13        global_ocean.90x40x15 global_with_exf global_ocean_pressure
14        inverted_barometer solid-body.cs-32x32x1
15      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
16    
17    checkpoint48d_post
18    o in preparation for r*:
19     a) use pre-computed gradient of hydrostatic potential:
20        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
21     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
22        => affects results of glob_oce_pressure (different truncation error)  
23      update output.txt of ideal_2D_oce & global_ocean_pressure
24    
25    checkpoint48d_pre
26    o in preparation for r*:
27      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
28      pass the 2 comp. of the grad. as arguments to momentum S/R.
29      but for the moment, only used if it does not change the results.
30    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
31    
32    checkpoint48c_post
33    Modifications in treatment of initial flux forcing controls
34    to avoid extra storing of flux fields.
35    
36    checkpoint48c_pre
37    o Added tidal_basin_2d experiment (currently 1D!)
38    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
39    
40    checkpoint48b_post
41    o r* coordinate added in #ifdef NONLIN_FRSURF block.
42     (modification to pressure gradient not yet implemented)
43    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
44      (for U & V) that are used for vertical advection of momentum.
45    
46    checkpoint48a_post
47    o In preparation for r*, use temp. array to compute vertical transport
48       in flux-form momentum pkg. => change results of few test-exp.
49      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
50                        lab_sea, natl_box & plume_on_slope
51    
52    checkpoint48
53    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
54    
55    checkpoint47j_post
56    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
57    o moved adexch from forward_step to addummy_in_stepping
58    o added exch in ctrl_map_...
59    o aveFreq.=0. at end of cost_final to avoid overwrite in
60      reverse checkpointing loop
61    o Yet more changes in gmredi:
62      * adgmredi_calc_tensor
63        avoiding all recomputation of gmredi_slope_limit
64      * adgmredi_x/y/rtransport
65        added flag for excessive storing to avoid recomp. of
66        u/v/rtans, dTdx/y/z
67        -> this is not really necessary and very memory-consuming
68      * adgmredi_slope_psi:
69        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
70      * gmredi_slope_limit
71        re-activated full calculation of taperfct for case 'ac02'
72    o updating verification/ adjoints of carbon, global_ocean.90x40x15
73    
74    checkpoint47i_post
75    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
76    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
77      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
78    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
79    o gmredi: fix few bugs.
80    
81    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
82    This will be a good checkpoint to plug into the ecco-branch.
83    o few modif.'s to get latest version adjointed
84      (mainly kick out code in ini_linear_phisurf)
85    o modif's to run adjoint with exactConserv
86    o case GM_BOLUS_ADVEC should be cleaned
87      S/R gmredi_slope_psi should be cleaned
88    o verification/carbon now has exactConserv=.TRUE.
89    
90    checkpoint47g_post
91    o time-average AIM output: becomes independent from statvars time-average
92      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
93    o After TAF bug fix:
94      Tested adjoint of gmredi package.
95      Tests were done with checkpoint47 rather than with latest
96      checkpoint47f_post since the latter is broken for the adjoint
97      verification/carbon/ contains both ADM and TLM gradient checks.
98    Here they are, before they get changed/lost/stolen.
99    Mostly modif.'s to fix numerical sensitivities.
100    Gradient checks OK for
101    - GM_taper_scheme:
102      * clipping
103      * ac02
104      * linear
105      * glw91
106      * dm95
107      * ldd97
108    - GMREDI_OPTIONS:
109      * GM_VISBECK_VARIABLE_K
110      * GM_NON_UNITY_DIAGONAL
111      * GM_EXTRA_DIAGONAL
112      * GM_BOLUS_ADVEC
113    in conjunction with data.gmredi parameters to be checked in
114    in a few minutes under verification/carbon/code/
115    
116    checkpoint47f_post
117    Merging from release1_p10:
118    o modifications for using pkg/exf with pkg/seaice
119      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
120        and SEAICE_EXTERNAL_FLUXES
121      - pkg/exf CPP options EXF_READ_EVAP and
122        EXF_NO_BULK_COMPUTATIONS
123      - usage examples are Experiments 8 and 9 in
124        verification/lab_sea/README
125      - verification/lab_sea default experiment now uses
126        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
127    
128    checkpoint47e_post
129    o created a tag prior to creating a branch
130    
131    checkpoint47d_post
132    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
133      at the bottom boundary had an erroneous half slip boundary condition
134    o added bottom drag and no slip boundary condition capabilities to
135      oceanic pressure coordinates code
136    o added new verification experiment global_ocean_pressure, this experiment is
137      also described in the tutorial section of the manual
138    checkpoint47d_pre
139    
140    checkpoint47c_post
141    o Added a verification experiment for a global cubed-sphere ocean run
142      -  verification/global_ocean.cubed32x32x30
143      -  uses pkg/therm_seaice and pkg/bulk_forcing
144    
145    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
146    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
147      when using P-coordinate; only implemented for atmospheric config.
148    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
149      NOTES: requires option NONLIN_FRSURF to be "#define".
150    o update advect_xz/results/output.txt (left from checkpoint44g_post)
151    
152    checkpoint47b_post
153    Merging from release1_p9:
154    o pkg/seaice
155      - removed GOTO's and added taf directives
156      - double precision constants to reduce the g77 (Linux)
157        to F77 (SGI) differences reported in release1_p8
158    o tools/genmake
159      - added SGI options
160    o verification/testscript
161      - updated to that of checkpoint47a_post
162    o verification/global_ocean.90x40x15/input/eedata
163      - modified for SGI f77 compatibility
164    o verification/lab_sea
165      - added description of sea-ice model
166      - added missing matlab routines
167      - added test of thermodynamics parallelization
168    
169    checkpoint47a_post
170    o new pkg: aim_v23
171     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
172       for now, keep the same surface forcing as before.
173     - Part-Cell implemented into AIM; check that Heat & Water are conserved
174     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
175     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
176    o add diagnostic of surface correction term in monitor output
177    
178    o bulk_force and therm_seaice
179    - Two packages:  bulk_force (Bulk forcing)
180      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
181    - Earlier integration from Stephaine Dutkiewicz
182      and Patrick Heimbach.
183    - Two ifdef statements for compile time,
184       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
185    
186    checkpoint47
187    differentiable version of checkpoint46n_post
188    o bug fix in quasihydrostaticterms
189    o * "clean" adjoint code (in terms of extensive recomputations)
190        can now be obtained for all GMREDI options (i.e. for
191        - GM_VISBECK_VARIABLE_K
192        - GM_NON_UNITY_DIAGONAL
193        - GM_EXTRA_DIAGONAL
194        - GM_BOLUS_ADVEC )
195      * However, wrong gradient check problem remains unsolved.
196      * New CPP options have been introduced for different
197        tapering schemes
198    o external_fields_load now part of differentiation list
199    o pressure needs multiple storing;
200      would be nice to have store_pressure at beginning or
201      end of forward_step, e.g. by having phiHyd global (5-dim.)
202      (NB: pressure is needed for certain cases in find_rho,
203      which is also invoked through convective_adjustment).
204    o recomputations in find_rho for cases
205     'JMD95'/'UNESCO' or 'MDJWF' are OK.
206    o #define ATMOSPHERIC_LOADING should be differentiable
207    o ini_forcing shifted to begining of initialise_varia
208    o Incorporating QNVS line search routines into MITgcm
209      (this is separate code, and therefore not under pkg)
210      lsopt/, optim/
211    o Updated verification/carbon/
212      - #define GM_VISBECK_VARIABLE_K
213      - GM_taper_scheme    = 'ldd97'    
214    
215    checkpoint46n_post
216    Merging from release1_p8:
217    o verification/natl_box:
218      updating new external_fields_load routine
219    o New package: pkg/seaice
220      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
221      The sea-ice code is based on Hibler (1979-1980).
222      Two sea-ice dynamic solvers, ADI and LSR, are included.
223      In addition to computing prognostic sea-ice variables and diagnosing
224      the forcing/external data fields that drive the ocean model,
225      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
226      The implied surface heat flux is then stored in variable
227      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
228      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
229      non-local transport term.  Because this call precedes model
230      thermodynamics, temperature under sea-ice may not be "exactly" at
231      the freezing point by the time theta is dumped or time-averaged.
232      N.B.: fairly large differences in accuracy occur across
233            different platforms/compilers; comparison between
234            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
235            generated output gives:
236       T           S           U           V
237      C D M    c        m  s        m  s        m  s        m  s
238      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
239      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
240      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
241    
242      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
243    o GAD:
244      - generated new common blocks to account for call of
245        same gad routines with differing traceridentities
246        (needed to modify tracerIdentity indices in GAD.h)
247      - generated separate common blocks for case useCubedSphereExchange
248        (Department of Futurology)
249      - parameter lists to gmredi_?transport: added tracerIdentity
250      - added new key indices to tamc.h
251    o external_fields_load:
252      - added this routine to TAF list
253      - needed to make some common blocks global and additional storing
254        along the same lines as exf package (checkpoint_lev?_directives.h)
255    o exf:
256      updated external forcing package
257      - bug fixes carried over from ecco-branch
258        (missing OBCS_OPTIONS.h in two routines)
259      - enable easy to use "no forcing".
260      - added exf I/O for atmospheric loading
261      - added exf I/O for runoff data
262      - transfered scaling between exf <-> MITgcm to exf namelist
263    o Adding new verification experiment global_with_exf.
264      This verification experiment is almost identical to the
265      global_ocean.90x40x15 experiment, except that it uses
266      the exf (and cal) package instead of the
267      external_fields_load routine (cf README file).
268    
269    checkpoint46m_post
270    o modified testscript to return -- when there are no lines of "%MON" output
271    o added new flag "quasiHydrostatic" for QH mode
272      and new routine quasihydrostaticterms()
273    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
274      New routine: mom_u_coriolis_nh()
275    o fixed sign of non-hydrostatic metric terms in u and v equations.
276      Depend on correct sign of gravitySign.
277    o added work.pc* to .cvsignore in aim directories using ifc
278    o introduced flag for controllin non-hydrostatic metric terms
279    o removed gravitySign from PARM04
280    o switched to g77/ifc from pgf77 in aim experiments
281    
282    checkpoint46l_post
283    o made convective adjustment work with pressure coordinates:
284     - changed the direction of k-loop in convective_adjustment.F for the
285       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
286     - adjusted the reference pressure k-index in convective_adjustment.F
287     - adjusted the convection condition in convect.F (in analogy to
288       calc_ivdc.F)
289     - convective_adjustment no longer computes anything on the halos
290     - removed the warnings about negative salinity from find_rho.F and
291       find_alpha.F; instead the new routine look_for_neg_salinity, called
292       at the beginning of find_rho, find_alpha, and find_beta, does a
293       check of the entire slice, if CPP-option
294       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
295    checkpoint46l_pre
296    
297    checkpoint46k_post
298    o fixed the verification/global_ocean.90x40x15 experiment:
299     - new bathymetry (the world according to A., JMC, and M.)
300     - new initial fields and forcing fields (*.bin files)
301     - new POLY3.COEFFS (for the next release one should switch to a full
302       equation of state: JMD95P or MDJWF)
303     - fixed several errors and redundancies in the data file
304     - experiment uses looped cells
305     - added matlab directory with diagnostic scripts for plotting of output
306    
307    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
308     - read AIM physics parameters from a file (data.aimphys)
309     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
310    
311    checkpoint46j_post
312    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
313    o move wVel computation at the end of the time step, in S/R integr_continuity
314    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
315    o update timeave pkg for wVel diagnostic.
316    checkpoint46j_pre
317    
318    checkpoint46i_post
319    o Clean up AIM package (and keep the results unchanged):
320      include CPP_OPTION and use IMPLICT NONE in all routines ;
321      declare all the variables _RL ; use _d 0 for all numerical constants.
322      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
323    
324    checkpoint46h_post
325    o cleaned up the use of rhoNil and rhoConst.
326      - rhoNil should only appear in the LINEAR equation of state, everywhere
327        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
328        and the dynamical equations are all divided by rhoConst
329    o introduced new parameter rhoConstFresh, a reference density of fresh
330      water, to remove the fresh water flux's dependence on rhoNil. The default
331      value is 999.8 kg/m^3
332    o cleanup up external_forcing.F and external_forcing_surf.F
333      - can now be used by both OCEANIC and OCEANICP
334    checkpoint46h_pre
335    
336     Added code to convert surface volume flux (fresh water) into
337     a mass flux when using P coordinates in the ocean (OCEANICP).
338     Note: It assumes you have set rho0=rhoConst=density of fresh water.
339    
340    checkpoint46g_post
341    o Include a new diagnostic variable phiHydLow for the ocean model
342      - in z-coordinates, it is the bottom pressure anomaly
343      - in p-coordinates, it is the sea surface elevation
344      - in both cases, these variable have global drift, reflecting the mass
345        drift in z-coordinates and the volume drift in p-coordinates
346      - included time averaging for phiHydLow, be aware of the drift!
347    o depth-dependent computation of Bo_surf for pressure coordinates
348      in the ocean (buoyancyRelation='OCEANICP')
349      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
350        Theta, Salinity, and Pressure in the parameter list. This routine is
351        presently contained in find_rho.F. This routine does not give the
352        correct density for 'POLY3', which would be a z-dependent reference
353        density.
354    o cleaned up find_rho
355      - removed obsolete 'eqn' from the parameter list.
356    o added two new verification experiments: gop and goz
357      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
358    checkpoint46g_pre
359    
360    checkpoint46f_post
361    o Enable tangent linear (forward mode) gradient checks:
362      - extended active file handling to g_... files
363      - added TANGENT_SIMULATION to theSimulationMode
364      - extended grdchk package accordingly
365    o added tangent linear setup in verification/carbon/code_ftl
366    o added adjoint setup in verification/front_relax/code_ad
367    
368    checkpoint46e_post
369    o Added new equation of state -> MDJWF
370      - EOS of McDougall et al., 2002, JAOT, submitted
371      - caveat: the equation of state is only valid for a smaller (more
372        realistic?) range of values than JMD95P/Z and UNESCO
373      - added masks to the calculation of pressure in store_pressure
374      - added more check values for density in check_eos (ini_eos.F), some of
375        the old check values are out of the range of the MDJWF-eos, so don't
376        expect perfect matches for those
377    checkpoint46e_pre
378    
379    checkpoint46d_post
380    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
381      'OCEANICP', also initialised field pressure correctly in ini_eos in the
382      case of pressure coordinates. eosType='JMD95Z' in
383      combination with buoyancyRelation='OCEANICP' now causes an error.
384    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
385      in find_alpha/beta.
386    checkpoint46d_pre
387    
388    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
389      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
390    
391    checkpoint46c_post
392    o Changes necessary for ocean in p-coordinates
393     -  Added new buoyancy relation = 'OCEANICP'
394     -  Added new parameters = gravitySign (this used to be contained inside
395        the factor dRdZ which I added when we first switched to R coordinates).
396     X GM/Redi is not compatible (yet)
397     X bottom drag and no-slip need to be debugged.
398    checkpoint46c_pre
399    
400    checkpoint46b_post
401    o Added new equation of state -> JMD95Z and JMD95P
402      - EOS of Jackett and McDougall, 1995, JAOT
403      - moved all EOS parameters into EOS.h
404      - new routines ini_eos.F, store_pressure.F
405    o Added UNESCO EOS, but not recommended because it requires
406      in-situ temperature (see JMD95)
407    o Modified formatting for knudsen2.f in utils/knudsen2 and added
408      unesco.f to be used with POLY3
409    checkpoint46b_pre
410    
411    checkpoint46a_post
412    o Added (atmospheric) pressure loading
413      - new field in FFIELDS.h, etc...
414      - new cpp flag ATMOSPHERIC_LOADING
415    o Changed hFacC to _hFacC in calc_phi_hyd.F
416    o Added SHORTWAVE_HEATING to some files for consistency
417    checkpoint46a_pre
418    
419    checkpoint46
420    further merges from release1_p5
421    o new ctrl package
422      - adopted from ECCO environment to enable optimization
423      - added Eliassen Palm fluxes to controls
424    o added Eliassen Palm flux controls to gradient check package
425    o cost package
426      - Compatible with new ctrl package
427      - added Eliassen Palm cost hooks
428      - modif's of existing cost functions
429    o Adjoint-related bug fixes in kpp:
430      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
431      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
432    o autodiff package
433      - flow directives:
434        + new for S/R do_the_model_io
435        + enhanced for S/R checkpoint
436        + new gmredi.flow
437      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
438        disable adcommon.h/g_common.h by default.
439      - fixed problem for adjoint of global_max
440    o modified verification/carbon/
441    o New setup for adjoint of global_ocean
442    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
443    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
444    o incorporated hooks for sponge layer code (external_forcing.F)
445    
446    checkpoint45d_post
447    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
448    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
449      (affects plume_on_slope "cg2d" output)
450    o add new parameter deltaTfreesurf for free-surface time stepping
451    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
452    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
453    o change phiMin in exp1 (to agree with documentation)
454    o add new flags:
455     - T,S forcing inside/outside Adams-Bashforth
456     - turn off temp,salt advection and/or forcing
457     - for each tracer, define internal flag for multiDimAdvection & A-B
458    o monitor: change definition of KE to check conservation of Energy
459    
460    checkpoint45c_post
461    o Removed f90 comments ("!")
462    o Modified initialisations to enable exf package for MITgcm
463      (without invoking ECCO_PACKAGE).
464    o modifications to gradient check package (Martin Losch)
465      - enable centered differences
466      - modified format of standard output
467    
468    checkpoint45b_post
469    o cleaned exchange calls in cg2d
470    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
471    o included CPP option SINGLE_LAYER_MODE in thermodynamics
472      to configure barotropic setup (Martin Losch)
473    o moved some initialisations within bi,bj loop in dynamics
474      (TAF flow dependency)
475    o in initialise_varia, moved call packages_init_variables
476      before convective_adjustment_init
477      (corresponding adjustment of TAF tape initialisation).
478    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
479    
480    checkpoint45a_post
481    o compute Rho over the whole domain (extend iMin,jMin indices)
482    o specific exchange for X-slice domain (case Ny=1)
483    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
484    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
485    
486    checkpoint44h_post = checkpoint45
487    o Fix to restore differentiability:
488      place at which packages_init_variables is called in
489      initialise_varia is crucial for reverse control flow.
490    o modifications in GMRedi to enable stable adjoint
491      (corresponding modif's in thermodynamics, dynamics)
492    o added missing hook for sponge layer code in external_forcing
493    o modified test cost functions
494    o storing in gad_advection (plus removal of write(0,*)!
495    o missing headers TR1.h added in convective_adjustment routines
496    o errorMessageUnit set non-equal zero in eeboot
497      (conflict on some platforms, e.g. IBM SP3)
498    o modified carbon verif.
499    
500    checkpoint44h_pre
501    o vertical grid option: allow to put the Interface at the middle between
502      2 cell-centers ; replace delZ in pkg/kpp by drF.
503    o GM Advective form: Tracers are advected using the residual transport (=
504      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
505    
506    checkpoint44g_post
507    o fix surface correction term in multiDimAdvection (affects plume_on_slope
508      results) ; ifdef missing in thermodynamics.F
509    
510    checkpoint44f_pre,checkpoint44f_post
511    o added PTRACERS package
512      This allows an arbitrary number of passive tracers to be integrated
513      forward simultaneously with the dynamicaly model.
514      + Implemented so far:
515        - basic forward algorithm (time-stepping, advection, diffusion, convection)
516        - I/O and checkpointing
517        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
518      + Not implemented so far:
519        - KPP
520        - OBCS
521      + No specific example supplied (yet) but global_ocean.90x40x15 has the
522        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
523        line in data.pkg.
524      + This package is disabled by default since it increases storage.
525    
526    
527    o testscript: added -cleanup option
528    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
529                 b) enable to filter 2D fields.
530    
531    checkpoint44e_pre,post
532    o re-wrote convective adjustment to use pre-calculated weights
533      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
534      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
535      Original calls to convect() still in place.
536    
537    chkpt44d_pre,post
538    o added missing EXCLUDE_MONITOR flags
539    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
540      (incompatible typ in MIN/MAX expressions caused problems
541      on IBM SP3)
542    o in genmake added variable MAKEDEPEND
543      plus resetting for case SunOS
544    o added timer_stats.c routine for IBM SP3
545    o removed variables in dynamics
546    !!! I forgot to create tag chkpt44d_pre !!!
547    !!! But chkpt44d_pre = chkpt44c_post    !!!
548    
549    o real fresh water flux implemented with non-linear free-surface.
550    
551    chkpt44c_pre,post
552    o few fix (mask in shap_s2, EmPmR in external_field_load,
553      USE_NATURAL_BCS in solve_for_P);
554    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
555    
556    checkpoint44b_pre/_post
557    o merge of relevant stuff from the ecco-branch:
558      - genmake: removed $S64 overwrite for case SunOS
559      - pkg/exf: update and corrections for field swapping and obcs
560      - pkg/ecco: parameter lists for the_model_main, the_main_loop
561                  harmonized between ECCO and MITgcm
562      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
563                      updated checkpointing_lev... lists for obcs
564      - model/src: minor changes in forward_step, plot_field
565                   added directive for divided adjoint in the_main_loop
566      - pkg/mdsio: added mdsio_gl_slice
567    
568    o check parameters & config (chkpt44a_pre,post)
569    o OBC and NonLin_FrSurf.
570    
571    checkpoint44
572    o fix bug in mom_vi_del2uv
573    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
574    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
575    o update AIM experiments (NCEP input files)
576    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
577    o added some stuff for AD
578    
579    checkpoint43
580    o added two new advection tests
581    o added global 4x4 degree ocean test
582    o added test of H&S94 with free surface on cube
583    o some final mods for gradient check, adjoint,...
584    
585    checkpoint42
586      Fixed AD-related problems:
587    o Store directives up-to-date with re-arranged Adams-Bashforth
588      (mainly thermodynamics.F)
589    o New store directives for multi-dim. advection schemes
590      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
591      * new common block and key passkey
592      (mainly gad_advection.F)
593    o Modified store directives for split of dynamics/thermodynamics
594      for the case ALLOW_KPP
595    o Cleaned argument list for timestep_tracer.F
596    
597    checkpoint41
598    o re-formatted/added comments in prologues of key subroutines
599      to work with protex
600    
601    checkpoint40
602    o moved calc_gs, calc_gt and calc_tr1 back to model/src
603    o added FLT (floats) package from Arne along with demo. experiment
604    o re-arranged Adams-Bashforth scheme for tracers to allow easier
605      implementation of forward-in-time forcing terms
606    o more mods for non-linear free-surface including new variable
607    o modified multi-dim method to work on cube
608    o bug fix in KPP (from DM)
609    
610    checkpoint40pre9
611    o added DST advection schemes
612    o fix MPI bug on SGI's
613    o modifications for non-linear free-surface
614    o fixed conditionals for fixed flow/passive tracer only mode
615    o added tension/strain form of stress tensor
616    o changes to commenting of arguments for TAF/TAMC
617    o added/updated many matlab scripts
618    o added multi-dimensional advection method for tracers
619      
620    checkpoint40pre8
621    o new package rw/
622      Added method for dumping intermediate local arrays:
623      mdsio_writetile - same as mdsio_writefield except works from inside
624                        bi,bj loop
625      mdsio_writelocal - same as mdsio_writetile except works for local
626                         arrays
627      write_local_r? - higher-level wrapper for mdsio_writelocal
628      Controlled by diagFreq. Defaults to zero (ie. no dumps)
629      Example given at end of mom_vecinv.F that dumps some local arrays.
630    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
631      control flux-form versus vector invariant code.
632      Switch is runtime flag vectorInvariantMomentum (defaults to false)
633      or genmake -DISABLE ...
634    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
635      (additional storing is now needed for case vecinv;
636      currently nothing implemented to switch this storing off
637      in case fluxform is used since no CPP flag available).
638    
639    checkpoint40pre7
640    o bug fix in dynamics.F
641      calc_viscosity called before k=1,Nr loop.
642    o added some #ifdef's ALLOW_PASSIVE_TRACER
643    o cleaned initialisations in ctrl_map_ini
644      related to TAF
645    
646    checkpoint40pre6
647    o split dynamics into thermodynamics & dynamics
648    o corresponding split of calc_diffusivity into
649      calc_diffusivity, calc_viscosity
650      (kpp_calc_diff, kpp_calc_visc).
651    o Added diffkr, kapgm to control variables
652    o bug fix in gmredi_slope_limit for ldd97
653    
654    checkpoint40pre5
655    o proper initialization of Adams-Bashforth time stepping
656      + uses forward step for very first step of model (iter=0)
657    o re-generated *all* output since almost all output is modified by this
658      change (sorry but we've been putting this one off for about 2 years)
659      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
660        *not* regenerated since they are already out of date and I don't
661        want to create the impression that they are suddenly working.
662    o removed KAP stuff for DEC's
663    o modified/added many .cvsignore files in */code and */input
664    o added new expt "solid-body.cs-32x32x1"
665      + this uses an alternative form of ini_curvilinear_grid.F which
666        is not necessarily any better than the current one...
667    
668    checkpoint40pre4
669    o added re-initialisations of utrans,vtrans,rtrans in
670      calc_common_factors which are crucial for TAF.
671    o extended iMin,jMin range for calc_common_factors,
672      calc_diffusivity
673    o added option ALLOW_PASSIVE_TRACER
674    o a few minor updates and fixes
675    
676    checkpoint40pre3
677    o created calc_gtr1.F for gad package
678    o split the_main_loop and re-introduced forward_step
679    o some recomputations of nIter0 for TAMC
680    
681    checkpoint40pre2
682    o Updated to latest branch of AJA, JMC
683    o Added gradient check package
684    o Added routines for passive tracer handling
685    o Added carbon sequestration sensitivity experiment
686    
687    checkpoint39
688     o Modifications and fixes to support TAMC
689       (mainly missing or wrong directives)
690     o Corrected common blocks when fooling TAMC to produce adjoint I/O
691       in addummy_in_stepping
692     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
693     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
694     o Included following packages:
695       cal: calendar
696       exf: external forcing
697       ecco: essential routines to control use of cal, exf
698             (NB: this is not the full ECCO environment)
699     o disabled some packages by default in genmake
700    
701    checkpoint38
702     o see notes_c37_adj.txt
703     o corrected wrong layer index in external_forcing_t
704     o replaced the_main_loop/forward_step by the_main_loop
705     o removed forceoutput from write_state
706       (replaced criteria for initial/final state)
707     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
708    
709    checkpoint37
710     o mdsio.F routine split and packaged in pkg/mdsio
711       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
712        used unless genmake -disable=mdsio)
713     o allow a more precise surface-geopotential gradient for the atmosphere
714       taking into account the change in space of Alpha (=1/rho) at the surface.
715     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
716       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
717     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
718       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
719       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
720     o Time-Average diagnostics defined as a pseudo package "timeave".
721     o pickup files : old pickup (before c35) did not work with new code (c35
722       and after) unless activating 2 commented lines in initialise-varia.
723     o Non-Hydrostatic pickup file Pb fixed.
724     o bug with Rigid-lid version (since c35) fixed.  
725    
726    checkpoint36
727     o implement Crank-Nickelson barotropic time-stepping
728     o recover Time-Average diagnostics
729     o fix Pb in checkpoint (PR#19)
730     o AIM become a standard package ; clean unused CPP_kees
731    
732    checkpoint35
733     o subtantial rewrite of dynamics.f
734     o allows staggered time-stepping
735     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
736     o added bottom drag (linear + quadratic)
737    
738    checkpoint34
739     o Modified exchange routines for correct reverse simulation.
740     o Added verification output to comply with bug fix in impldiff.F
741       as of c33 (exp2, natl_box).
742     o Corrected store directives in dynamics.F
743     o Corrected array boundaries in impldiff.F
744     o Corrected array dimensions in gmredi.
745       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
746     o Added routine GLOBAL_SUM_INT to global_sum.F
747     o Added mdsio_gl.F for ECCO purposes.
748    
749    checkpoint33
750     o Fixed bug in lower BC in impldiff.F
751     o Fixed confusion about units of forcing arrays in FFIELDS.h
752       namely Fu,Fv,Qnet,Qsw,EmPmR:
753       - Removed verification/natl_box/code/external_fields_scale.F
754         (did not differ from that in model/src)
755       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
756         (see FFIELDS.h for description)
757       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
758         kpp_calc.F and kpp_transport_t.F
759       - Removed model/src/external_fields_scale.F and calls to it
760       - verification/natl_box uses flux data with "atmospheric" sign so
761         a special version of external_fields_load.F is used to
762         change the data as it's read in. This way, the arrays
763         have the right units and signs at all times tha a user could
764         possibly use them.
765     o Corrected genmake to delete a temporary file during configuration
766    
767    checkpoint32
768     o Scaling of forcing fields moved from external_forcing.F to
769       external_fields_scale.F, called directly after loading fields.
770     o Surface relaxation terms added to surface tendency fields in
771       extra subroutine.
772     o impldiff.F changed to avoid storing by TAMC of huge intermediate
773       fields.
774     o Changes in GMRedi to comply with packaging structure.
775     o Modifications and bug fixes in KPP package.
776     o Verification experiment for KPP added (verification/nat_box/)
777    
778    checkpoint31
779     o Packages interface brought in line with defined standard
780       -> new routines packages_...F
781       -> changes in initialise_fixed.F, initialise_varia.F
782       -> enables initialisation interface for ECCO package
783     o Rescaling of external forcing fields immediately after read
784       (removed from external_forcing.F)
785       -> new: surface_fields_scale.F
786       -> affects ini_foorcing.F, external_fields_load.F
787     o Computation of surface tendencies before tendency updates.
788       -> new: external_forcing_surf.F
789     o Change of variable names useGMRedi, useKPP, useECCO
790     o Further changes in dynamics.F, impldiff.F for TAMC
791     o Tested for experiments 0, 2, 4.
792       - not yet tested for GMRedi.
793       - not yet tested for KPP.
794    
795    checkpoint30
796     o Updates for OBCs
797     o New experiment for test OBCs (internal_wave)
798     o New output.txt in verification/exp4/results/
799     o Updates for KPP: calculation of viscosity corrected, new variables
800       kpp_dumpFreq and kpp_taveFreq
801     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
802       and entry for T90 in genmake
803    
804    checkpoint29
805     o packaged KPP and GM/Redi
806    
807    checkpoint28
808     o Corrected initialization of hFacMin for difference vertical coordinates
809     o Modified calculation of partial cell thickness to more robust algorithm
810     o config_summary.F: replaced write_1D_... by write_0D_...
811       read_write.F: added subroutines write_0D_...
812     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
813       included some initialisations required for TAMC.
814     o routine calc_isoslopes: modified sqrt computation to make it
815       differentiable for zero argument.
816     o routines dynamics, impldiff:
817       included store directives and tape key computations required for TAMC.
818     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
819    
820    checkpoint27
821     o fixed calc_isoslopes() to so that cancellation of terms in tensor
822       formulation works properly with variable resolution.
823     o restructured the calling tree between the_model_main() and dynamics()
824     o split initialise() into initialise_fixed() and initialise_varia()
825     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
826       in new routine ini_psurf()
827    
828    checkpoint26
829     o moved some #ifdef in optional routines to encompass everything
830       except the argument declarations. This was using up some memory.
831     o fixed macros like _ADT to work with both versions of Linux cpp
832     o cleaned up some unused and uninitialized variables
833       (helps when debugging with strict compile options)
834     o split up CPP_EEOPTIONS.h into options and macros
835       (macros are now in eesupp/inc/CPP_EEMACROS.h)
836     o patch for 2 processor JAM mode
837    
838    checkpoint25
839     o updates for OBCs and NH
840     o dramatically reduced memory usage
841     o added "JAM" routines for use on Artic network
842     o parameterization of convection by implicit vertical diffusion
843     o added a diagnostic of convective index
844     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
845       (this is was partly for OBCs and NH but also in anticipation of
846        an explicit free-surface option)
847     o initial state input files for U and V
848    
849    checkpoint24
850     o Removed some spurious "REAL"s
851     o Updated KPP to latest version from JPL
852     o Added a COS(latitude) in horizontal viscosity
853    
854    checkpoint23
855     o Added del^4 diffusion for salt and temperature
856     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
857    
858    checkpoint22
859     o Made many small changes: implicit none, format(i5), etc...
860     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
861    
862    checkpoint21
863     o Introduced new I/O package that supports direct-access records (mdsio.F)
864     o Split-up mid-level I/O routines
865     o Updated input data for experiments 0,1,2,4 and 5
866     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
867    
868    checkpoint20
869     o Tidied up open-boundaries some more
870     o Added non-hydrostatic code
871     o Fixed some input data
872     o Modified MPI start-up to work in "coupled" context.
873    
874    checkpoint19
875     o Tidied up directory structure for verification experiments.
876     o Added new code for open boundaries.
877     o Corrected advective terms near boundaries.
878     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
879     o Implemented free-slip/no-slip BCs and del^4 dissipation.
880     o Split default parameters out of ini_parms.F into set_defaults.F.
881    
882    checkpoint18
883     o Further changes for optional code generation with
884       CPP - ugh!
885    
886    checkpoint17
887     o Beginning to incorporating modularity
888       for supporting atmos. and ocean configs.
889     o Small changes for TAMC complinace
890     o New ultra simple test case. Barotropic box
891       configuration "exp0".
892    
893  checkpoint16  checkpoint16
894   o Minor changes to exchange routines to support   o Minor changes to exchange routines to support
895     accumulation in reverse mode. Adjoint of an     accumulation in reverse mode. Adjoint of an

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