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revision 1.17 by cnh, Mon Nov 30 16:46:45 1998 UTC revision 1.115 by heimbach, Fri Jan 10 01:21:53 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint47g_post
7    o time-average AIM output: becomes independent from statvars time-average
8      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
9    o After TAF bug fix:
10      Tested adjoint of gmredi package.
11      Tests were done with checkpoint47 rather than with latest
12      checkpoint47f_post since the latter is broken for the adjoint
13      verification/carbon/ contains both ADM and TLM gradient checks.
14    Here they are, before they get changed/lost/stolen.
15    Mostly modif.'s to fix numerical sensitivities.
16    Gradient checks OK for
17    - GM_taper_scheme:
18      * clipping
19      * ac02
20      * linear
21      * glw91
22      * dm95
23      * ldd97
24    - GMREDI_OPTIONS:
25      * GM_VISBECK_VARIABLE_K
26      * GM_NON_UNITY_DIAGONAL
27      * GM_EXTRA_DIAGONAL
28      * GM_BOLUS_ADVEC
29    in conjunction with data.gmredi parameters to be checked in
30    in a few minutes under verification/carbon/code/
31    
32    checkpoint47f_post
33    Merging from release1_p10:
34    o modifications for using pkg/exf with pkg/seaice
35      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
36        and SEAICE_EXTERNAL_FLUXES
37      - pkg/exf CPP options EXF_READ_EVAP and
38        EXF_NO_BULK_COMPUTATIONS
39      - usage examples are Experiments 8 and 9 in
40        verification/lab_sea/README
41      - verification/lab_sea default experiment now uses
42        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
43    
44    checkpoint47e_post
45    o created a tag prior to creating a branch
46    
47    checkpoint47d_post
48    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
49      at the bottom boundary had an erroneous half slip boundary condition
50    o added bottom drag and no slip boundary condition capabilities to
51      oceanic pressure coordinates code
52    o added new verification experiment global_ocean_pressure, this experiment is
53      also described in the tutorial section of the manual
54    checkpoint47d_pre
55    
56    checkpoint47c_post
57    o Added a verification experiment for a global cubed-sphere ocean run
58      -  verification/global_ocean.cubed32x32x30
59      -  uses pkg/therm_seaice and pkg/bulk_forcing
60    
61    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
62    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
63      when using P-coordinate; only implemented for atmospheric config.
64    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
65      NOTES: requires option NONLIN_FRSURF to be "#define".
66    o update advect_xz/results/output.txt (left from checkpoint44g_post)
67    
68    checkpoint47b_post
69    Merging from release1_p9:
70    o pkg/seaice
71      - removed GOTO's and added taf directives
72      - double precision constants to reduce the g77 (Linux)
73        to F77 (SGI) differences reported in release1_p8
74    o tools/genmake
75      - added SGI options
76    o verification/testscript
77      - updated to that of checkpoint47a_post
78    o verification/global_ocean.90x40x15/input/eedata
79      - modified for SGI f77 compatibility
80    o verification/lab_sea
81      - added description of sea-ice model
82      - added missing matlab routines
83      - added test of thermodynamics parallelization
84    
85    checkpoint47a_post
86    o new pkg: aim_v23
87     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
88       for now, keep the same surface forcing as before.
89     - Part-Cell implemented into AIM; check that Heat & Water are conserved
90     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
91     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
92    o add diagnostic of surface correction term in monitor output
93    
94    o bulk_force and therm_seaice
95    - Two packages:  bulk_force (Bulk forcing)
96      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
97    - Earlier integration from Stephaine Dutkiewicz
98      and Patrick Heimbach.
99    - Two ifdef statements for compile time,
100       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
101    
102    checkpoint47
103    differentiable version of checkpoint46n_post
104    o bug fix in quasihydrostaticterms
105    o * "clean" adjoint code (in terms of extensive recomputations)
106        can now be obtained for all GMREDI options (i.e. for
107        - GM_VISBECK_VARIABLE_K
108        - GM_NON_UNITY_DIAGONAL
109        - GM_EXTRA_DIAGONAL
110        - GM_BOLUS_ADVEC )
111      * However, wrong gradient check problem remains unsolved.
112      * New CPP options have been introduced for different
113        tapering schemes
114    o external_fields_load now part of differentiation list
115    o pressure needs multiple storing;
116      would be nice to have store_pressure at beginning or
117      end of forward_step, e.g. by having phiHyd global (5-dim.)
118      (NB: pressure is needed for certain cases in find_rho,
119      which is also invoked through convective_adjustment).
120    o recomputations in find_rho for cases
121     'JMD95'/'UNESCO' or 'MDJWF' are OK.
122    o #define ATMOSPHERIC_LOADING should be differentiable
123    o ini_forcing shifted to begining of initialise_varia
124    o Incorporating QNVS line search routines into MITgcm
125      (this is separate code, and therefore not under pkg)
126      lsopt/, optim/
127    o Updated verification/carbon/
128      - #define GM_VISBECK_VARIABLE_K
129      - GM_taper_scheme    = 'ldd97'    
130    
131    checkpoint46n_post
132    Merging from release1_p8:
133    o verification/natl_box:
134      updating new external_fields_load routine
135    o New package: pkg/seaice
136      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
137      The sea-ice code is based on Hibler (1979-1980).
138      Two sea-ice dynamic solvers, ADI and LSR, are included.
139      In addition to computing prognostic sea-ice variables and diagnosing
140      the forcing/external data fields that drive the ocean model,
141      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
142      The implied surface heat flux is then stored in variable
143      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
144      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
145      non-local transport term.  Because this call precedes model
146      thermodynamics, temperature under sea-ice may not be "exactly" at
147      the freezing point by the time theta is dumped or time-averaged.
148      N.B.: fairly large differences in accuracy occur across
149            different platforms/compilers; comparison between
150            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
151            generated output gives:
152       T           S           U           V
153      C D M    c        m  s        m  s        m  s        m  s
154      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
155      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
156      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
157    
158      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
159    o GAD:
160      - generated new common blocks to account for call of
161        same gad routines with differing traceridentities
162        (needed to modify tracerIdentity indices in GAD.h)
163      - generated separate common blocks for case useCubedSphereExchange
164        (Department of Futurology)
165      - parameter lists to gmredi_?transport: added tracerIdentity
166      - added new key indices to tamc.h
167    o external_fields_load:
168      - added this routine to TAF list
169      - needed to make some common blocks global and additional storing
170        along the same lines as exf package (checkpoint_lev?_directives.h)
171    o exf:
172      updated external forcing package
173      - bug fixes carried over from ecco-branch
174        (missing OBCS_OPTIONS.h in two routines)
175      - enable easy to use "no forcing".
176      - added exf I/O for atmospheric loading
177      - added exf I/O for runoff data
178      - transfered scaling between exf <-> MITgcm to exf namelist
179    o Adding new verification experiment global_with_exf.
180      This verification experiment is almost identical to the
181      global_ocean.90x40x15 experiment, except that it uses
182      the exf (and cal) package instead of the
183      external_fields_load routine (cf README file).
184    
185    checkpoint46m_post
186    o modified testscript to return -- when there are no lines of "%MON" output
187    o added new flag "quasiHydrostatic" for QH mode
188      and new routine quasihydrostaticterms()
189    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
190      New routine: mom_u_coriolis_nh()
191    o fixed sign of non-hydrostatic metric terms in u and v equations.
192      Depend on correct sign of gravitySign.
193    o added work.pc* to .cvsignore in aim directories using ifc
194    o introduced flag for controllin non-hydrostatic metric terms
195    o removed gravitySign from PARM04
196    o switched to g77/ifc from pgf77 in aim experiments
197    
198    checkpoint46l_post
199    o made convective adjustment work with pressure coordinates:
200     - changed the direction of k-loop in convective_adjustment.F for the
201       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
202     - adjusted the reference pressure k-index in convective_adjustment.F
203     - adjusted the convection condition in convect.F (in analogy to
204       calc_ivdc.F)
205     - convective_adjustment no longer computes anything on the halos
206     - removed the warnings about negative salinity from find_rho.F and
207       find_alpha.F; instead the new routine look_for_neg_salinity, called
208       at the beginning of find_rho, find_alpha, and find_beta, does a
209       check of the entire slice, if CPP-option
210       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
211    checkpoint46l_pre
212    
213    checkpoint46k_post
214    o fixed the verification/global_ocean.90x40x15 experiment:
215     - new bathymetry (the world according to A., JMC, and M.)
216     - new initial fields and forcing fields (*.bin files)
217     - new POLY3.COEFFS (for the next release one should switch to a full
218       equation of state: JMD95P or MDJWF)
219     - fixed several errors and redundancies in the data file
220     - experiment uses looped cells
221     - added matlab directory with diagnostic scripts for plotting of output
222    
223    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
224     - read AIM physics parameters from a file (data.aimphys)
225     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
226    
227    checkpoint46j_post
228    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
229    o move wVel computation at the end of the time step, in S/R integr_continuity
230    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
231    o update timeave pkg for wVel diagnostic.
232    checkpoint46j_pre
233    
234    checkpoint46i_post
235    o Clean up AIM package (and keep the results unchanged):
236      include CPP_OPTION and use IMPLICT NONE in all routines ;
237      declare all the variables _RL ; use _d 0 for all numerical constants.
238      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
239    
240    checkpoint46h_post
241    o cleaned up the use of rhoNil and rhoConst.
242      - rhoNil should only appear in the LINEAR equation of state, everywhere
243        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
244        and the dynamical equations are all divided by rhoConst
245    o introduced new parameter rhoConstFresh, a reference density of fresh
246      water, to remove the fresh water flux's dependence on rhoNil. The default
247      value is 999.8 kg/m^3
248    o cleanup up external_forcing.F and external_forcing_surf.F
249      - can now be used by both OCEANIC and OCEANICP
250    checkpoint46h_pre
251    
252     Added code to convert surface volume flux (fresh water) into
253     a mass flux when using P coordinates in the ocean (OCEANICP).
254     Note: It assumes you have set rho0=rhoConst=density of fresh water.
255    
256    checkpoint46g_post
257    o Include a new diagnostic variable phiHydLow for the ocean model
258      - in z-coordinates, it is the bottom pressure anomaly
259      - in p-coordinates, it is the sea surface elevation
260      - in both cases, these variable have global drift, reflecting the mass
261        drift in z-coordinates and the volume drift in p-coordinates
262      - included time averaging for phiHydLow, be aware of the drift!
263    o depth-dependent computation of Bo_surf for pressure coordinates
264      in the ocean (buoyancyRelation='OCEANICP')
265      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
266        Theta, Salinity, and Pressure in the parameter list. This routine is
267        presently contained in find_rho.F. This routine does not give the
268        correct density for 'POLY3', which would be a z-dependent reference
269        density.
270    o cleaned up find_rho
271      - removed obsolete 'eqn' from the parameter list.
272    o added two new verification experiments: gop and goz
273      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
274    checkpoint46g_pre
275    
276    checkpoint46f_post
277    o Enable tangent linear (forward mode) gradient checks:
278      - extended active file handling to g_... files
279      - added TANGENT_SIMULATION to theSimulationMode
280      - extended grdchk package accordingly
281    o added tangent linear setup in verification/carbon/code_ftl
282    o added adjoint setup in verification/front_relax/code_ad
283    
284    checkpoint46e_post
285    o Added new equation of state -> MDJWF
286      - EOS of McDougall et al., 2002, JAOT, submitted
287      - caveat: the equation of state is only valid for a smaller (more
288        realistic?) range of values than JMD95P/Z and UNESCO
289      - added masks to the calculation of pressure in store_pressure
290      - added more check values for density in check_eos (ini_eos.F), some of
291        the old check values are out of the range of the MDJWF-eos, so don't
292        expect perfect matches for those
293    checkpoint46e_pre
294    
295    checkpoint46d_post
296    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
297      'OCEANICP', also initialised field pressure correctly in ini_eos in the
298      case of pressure coordinates. eosType='JMD95Z' in
299      combination with buoyancyRelation='OCEANICP' now causes an error.
300    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
301      in find_alpha/beta.
302    checkpoint46d_pre
303    
304    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
305      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
306    
307    checkpoint46c_post
308    o Changes necessary for ocean in p-coordinates
309     -  Added new buoyancy relation = 'OCEANICP'
310     -  Added new parameters = gravitySign (this used to be contained inside
311        the factor dRdZ which I added when we first switched to R coordinates).
312     X GM/Redi is not compatible (yet)
313     X bottom drag and no-slip need to be debugged.
314    checkpoint46c_pre
315    
316    checkpoint46b_post
317    o Added new equation of state -> JMD95Z and JMD95P
318      - EOS of Jackett and McDougall, 1995, JAOT
319      - moved all EOS parameters into EOS.h
320      - new routines ini_eos.F, store_pressure.F
321    o Added UNESCO EOS, but not recommended because it requires
322      in-situ temperature (see JMD95)
323    o Modified formatting for knudsen2.f in utils/knudsen2 and added
324      unesco.f to be used with POLY3
325    checkpoint46b_pre
326    
327    checkpoint46a_post
328    o Added (atmospheric) pressure loading
329      - new field in FFIELDS.h, etc...
330      - new cpp flag ATMOSPHERIC_LOADING
331    o Changed hFacC to _hFacC in calc_phi_hyd.F
332    o Added SHORTWAVE_HEATING to some files for consistency
333    checkpoint46a_pre
334    
335    checkpoint46
336    further merges from release1_p5
337    o new ctrl package
338      - adopted from ECCO environment to enable optimization
339      - added Eliassen Palm fluxes to controls
340    o added Eliassen Palm flux controls to gradient check package
341    o cost package
342      - Compatible with new ctrl package
343      - added Eliassen Palm cost hooks
344      - modif's of existing cost functions
345    o Adjoint-related bug fixes in kpp:
346      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
347      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
348    o autodiff package
349      - flow directives:
350        + new for S/R do_the_model_io
351        + enhanced for S/R checkpoint
352        + new gmredi.flow
353      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
354        disable adcommon.h/g_common.h by default.
355      - fixed problem for adjoint of global_max
356    o modified verification/carbon/
357    o New setup for adjoint of global_ocean
358    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
359    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
360    o incorporated hooks for sponge layer code (external_forcing.F)
361    
362    checkpoint45d_post
363    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
364    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
365      (affects plume_on_slope "cg2d" output)
366    o add new parameter deltaTfreesurf for free-surface time stepping
367    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
368    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
369    o change phiMin in exp1 (to agree with documentation)
370    o add new flags:
371     - T,S forcing inside/outside Adams-Bashforth
372     - turn off temp,salt advection and/or forcing
373     - for each tracer, define internal flag for multiDimAdvection & A-B
374    o monitor: change definition of KE to check conservation of Energy
375    
376    checkpoint45c_post
377    o Removed f90 comments ("!")
378    o Modified initialisations to enable exf package for MITgcm
379      (without invoking ECCO_PACKAGE).
380    o modifications to gradient check package (Martin Losch)
381      - enable centered differences
382      - modified format of standard output
383    
384    checkpoint45b_post
385    o cleaned exchange calls in cg2d
386    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
387    o included CPP option SINGLE_LAYER_MODE in thermodynamics
388      to configure barotropic setup (Martin Losch)
389    o moved some initialisations within bi,bj loop in dynamics
390      (TAF flow dependency)
391    o in initialise_varia, moved call packages_init_variables
392      before convective_adjustment_init
393      (corresponding adjustment of TAF tape initialisation).
394    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
395    
396    checkpoint45a_post
397    o compute Rho over the whole domain (extend iMin,jMin indices)
398    o specific exchange for X-slice domain (case Ny=1)
399    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
400    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
401    
402    checkpoint44h_post = checkpoint45
403    o Fix to restore differentiability:
404      place at which packages_init_variables is called in
405      initialise_varia is crucial for reverse control flow.
406    o modifications in GMRedi to enable stable adjoint
407      (corresponding modif's in thermodynamics, dynamics)
408    o added missing hook for sponge layer code in external_forcing
409    o modified test cost functions
410    o storing in gad_advection (plus removal of write(0,*)!
411    o missing headers TR1.h added in convective_adjustment routines
412    o errorMessageUnit set non-equal zero in eeboot
413      (conflict on some platforms, e.g. IBM SP3)
414    o modified carbon verif.
415    
416    checkpoint44h_pre
417    o vertical grid option: allow to put the Interface at the middle between
418      2 cell-centers ; replace delZ in pkg/kpp by drF.
419    o GM Advective form: Tracers are advected using the residual transport (=
420      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
421    
422    checkpoint44g_post
423    o fix surface correction term in multiDimAdvection (affects plume_on_slope
424      results) ; ifdef missing in thermodynamics.F
425    
426    checkpoint44f_pre,checkpoint44f_post
427    o added PTRACERS package
428      This allows an arbitrary number of passive tracers to be integrated
429      forward simultaneously with the dynamicaly model.
430      + Implemented so far:
431        - basic forward algorithm (time-stepping, advection, diffusion, convection)
432        - I/O and checkpointing
433        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
434      + Not implemented so far:
435        - KPP
436        - OBCS
437      + No specific example supplied (yet) but global_ocean.90x40x15 has the
438        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
439        line in data.pkg.
440      + This package is disabled by default since it increases storage.
441    
442    
443    o testscript: added -cleanup option
444    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
445                 b) enable to filter 2D fields.
446    
447    checkpoint44e_pre,post
448    o re-wrote convective adjustment to use pre-calculated weights
449      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
450      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
451      Original calls to convect() still in place.
452    
453    chkpt44d_pre,post
454    o added missing EXCLUDE_MONITOR flags
455    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
456      (incompatible typ in MIN/MAX expressions caused problems
457      on IBM SP3)
458    o in genmake added variable MAKEDEPEND
459      plus resetting for case SunOS
460    o added timer_stats.c routine for IBM SP3
461    o removed variables in dynamics
462    !!! I forgot to create tag chkpt44d_pre !!!
463    !!! But chkpt44d_pre = chkpt44c_post    !!!
464    
465    o real fresh water flux implemented with non-linear free-surface.
466    
467    chkpt44c_pre,post
468    o few fix (mask in shap_s2, EmPmR in external_field_load,
469      USE_NATURAL_BCS in solve_for_P);
470    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
471    
472    checkpoint44b_pre/_post
473    o merge of relevant stuff from the ecco-branch:
474      - genmake: removed $S64 overwrite for case SunOS
475      - pkg/exf: update and corrections for field swapping and obcs
476      - pkg/ecco: parameter lists for the_model_main, the_main_loop
477                  harmonized between ECCO and MITgcm
478      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
479                      updated checkpointing_lev... lists for obcs
480      - model/src: minor changes in forward_step, plot_field
481                   added directive for divided adjoint in the_main_loop
482      - pkg/mdsio: added mdsio_gl_slice
483    
484    o check parameters & config (chkpt44a_pre,post)
485    o OBC and NonLin_FrSurf.
486    
487    checkpoint44
488    o fix bug in mom_vi_del2uv
489    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
490    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
491    o update AIM experiments (NCEP input files)
492    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
493    o added some stuff for AD
494    
495    checkpoint43
496    o added two new advection tests
497    o added global 4x4 degree ocean test
498    o added test of H&S94 with free surface on cube
499    o some final mods for gradient check, adjoint,...
500    
501    checkpoint42
502      Fixed AD-related problems:
503    o Store directives up-to-date with re-arranged Adams-Bashforth
504      (mainly thermodynamics.F)
505    o New store directives for multi-dim. advection schemes
506      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
507      * new common block and key passkey
508      (mainly gad_advection.F)
509    o Modified store directives for split of dynamics/thermodynamics
510      for the case ALLOW_KPP
511    o Cleaned argument list for timestep_tracer.F
512    
513    checkpoint41
514    o re-formatted/added comments in prologues of key subroutines
515      to work with protex
516    
517    checkpoint40
518    o moved calc_gs, calc_gt and calc_tr1 back to model/src
519    o added FLT (floats) package from Arne along with demo. experiment
520    o re-arranged Adams-Bashforth scheme for tracers to allow easier
521      implementation of forward-in-time forcing terms
522    o more mods for non-linear free-surface including new variable
523    o modified multi-dim method to work on cube
524    o bug fix in KPP (from DM)
525    
526    checkpoint40pre9
527    o added DST advection schemes
528    o fix MPI bug on SGI's
529    o modifications for non-linear free-surface
530    o fixed conditionals for fixed flow/passive tracer only mode
531    o added tension/strain form of stress tensor
532    o changes to commenting of arguments for TAF/TAMC
533    o added/updated many matlab scripts
534    o added multi-dimensional advection method for tracers
535      
536    checkpoint40pre8
537    o new package rw/
538      Added method for dumping intermediate local arrays:
539      mdsio_writetile - same as mdsio_writefield except works from inside
540                        bi,bj loop
541      mdsio_writelocal - same as mdsio_writetile except works for local
542                         arrays
543      write_local_r? - higher-level wrapper for mdsio_writelocal
544      Controlled by diagFreq. Defaults to zero (ie. no dumps)
545      Example given at end of mom_vecinv.F that dumps some local arrays.
546    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
547      control flux-form versus vector invariant code.
548      Switch is runtime flag vectorInvariantMomentum (defaults to false)
549      or genmake -DISABLE ...
550    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
551      (additional storing is now needed for case vecinv;
552      currently nothing implemented to switch this storing off
553      in case fluxform is used since no CPP flag available).
554    
555    checkpoint40pre7
556    o bug fix in dynamics.F
557      calc_viscosity called before k=1,Nr loop.
558    o added some #ifdef's ALLOW_PASSIVE_TRACER
559    o cleaned initialisations in ctrl_map_ini
560      related to TAF
561    
562    checkpoint40pre6
563    o split dynamics into thermodynamics & dynamics
564    o corresponding split of calc_diffusivity into
565      calc_diffusivity, calc_viscosity
566      (kpp_calc_diff, kpp_calc_visc).
567    o Added diffkr, kapgm to control variables
568    o bug fix in gmredi_slope_limit for ldd97
569    
570    checkpoint40pre5
571    o proper initialization of Adams-Bashforth time stepping
572      + uses forward step for very first step of model (iter=0)
573    o re-generated *all* output since almost all output is modified by this
574      change (sorry but we've been putting this one off for about 2 years)
575      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
576        *not* regenerated since they are already out of date and I don't
577        want to create the impression that they are suddenly working.
578    o removed KAP stuff for DEC's
579    o modified/added many .cvsignore files in */code and */input
580    o added new expt "solid-body.cs-32x32x1"
581      + this uses an alternative form of ini_curvilinear_grid.F which
582        is not necessarily any better than the current one...
583    
584    checkpoint40pre4
585    o added re-initialisations of utrans,vtrans,rtrans in
586      calc_common_factors which are crucial for TAF.
587    o extended iMin,jMin range for calc_common_factors,
588      calc_diffusivity
589    o added option ALLOW_PASSIVE_TRACER
590    o a few minor updates and fixes
591    
592    checkpoint40pre3
593    o created calc_gtr1.F for gad package
594    o split the_main_loop and re-introduced forward_step
595    o some recomputations of nIter0 for TAMC
596    
597    checkpoint40pre2
598    o Updated to latest branch of AJA, JMC
599    o Added gradient check package
600    o Added routines for passive tracer handling
601    o Added carbon sequestration sensitivity experiment
602    
603    checkpoint39
604     o Modifications and fixes to support TAMC
605       (mainly missing or wrong directives)
606     o Corrected common blocks when fooling TAMC to produce adjoint I/O
607       in addummy_in_stepping
608     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
609     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
610     o Included following packages:
611       cal: calendar
612       exf: external forcing
613       ecco: essential routines to control use of cal, exf
614             (NB: this is not the full ECCO environment)
615     o disabled some packages by default in genmake
616    
617    checkpoint38
618     o see notes_c37_adj.txt
619     o corrected wrong layer index in external_forcing_t
620     o replaced the_main_loop/forward_step by the_main_loop
621     o removed forceoutput from write_state
622       (replaced criteria for initial/final state)
623     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
624    
625    checkpoint37
626     o mdsio.F routine split and packaged in pkg/mdsio
627       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
628        used unless genmake -disable=mdsio)
629     o allow a more precise surface-geopotential gradient for the atmosphere
630       taking into account the change in space of Alpha (=1/rho) at the surface.
631     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
632       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
633     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
634       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
635       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
636     o Time-Average diagnostics defined as a pseudo package "timeave".
637     o pickup files : old pickup (before c35) did not work with new code (c35
638       and after) unless activating 2 commented lines in initialise-varia.
639     o Non-Hydrostatic pickup file Pb fixed.
640     o bug with Rigid-lid version (since c35) fixed.  
641    
642    checkpoint36
643     o implement Crank-Nickelson barotropic time-stepping
644     o recover Time-Average diagnostics
645     o fix Pb in checkpoint (PR#19)
646     o AIM become a standard package ; clean unused CPP_kees
647    
648    checkpoint35
649     o subtantial rewrite of dynamics.f
650     o allows staggered time-stepping
651     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
652     o added bottom drag (linear + quadratic)
653    
654    checkpoint34
655     o Modified exchange routines for correct reverse simulation.
656     o Added verification output to comply with bug fix in impldiff.F
657       as of c33 (exp2, natl_box).
658     o Corrected store directives in dynamics.F
659     o Corrected array boundaries in impldiff.F
660     o Corrected array dimensions in gmredi.
661       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
662     o Added routine GLOBAL_SUM_INT to global_sum.F
663     o Added mdsio_gl.F for ECCO purposes.
664    
665    checkpoint33
666     o Fixed bug in lower BC in impldiff.F
667     o Fixed confusion about units of forcing arrays in FFIELDS.h
668       namely Fu,Fv,Qnet,Qsw,EmPmR:
669       - Removed verification/natl_box/code/external_fields_scale.F
670         (did not differ from that in model/src)
671       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
672         (see FFIELDS.h for description)
673       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
674         kpp_calc.F and kpp_transport_t.F
675       - Removed model/src/external_fields_scale.F and calls to it
676       - verification/natl_box uses flux data with "atmospheric" sign so
677         a special version of external_fields_load.F is used to
678         change the data as it's read in. This way, the arrays
679         have the right units and signs at all times tha a user could
680         possibly use them.
681     o Corrected genmake to delete a temporary file during configuration
682    
683    checkpoint32
684     o Scaling of forcing fields moved from external_forcing.F to
685       external_fields_scale.F, called directly after loading fields.
686     o Surface relaxation terms added to surface tendency fields in
687       extra subroutine.
688     o impldiff.F changed to avoid storing by TAMC of huge intermediate
689       fields.
690     o Changes in GMRedi to comply with packaging structure.
691     o Modifications and bug fixes in KPP package.
692     o Verification experiment for KPP added (verification/nat_box/)
693    
694    checkpoint31
695     o Packages interface brought in line with defined standard
696       -> new routines packages_...F
697       -> changes in initialise_fixed.F, initialise_varia.F
698       -> enables initialisation interface for ECCO package
699     o Rescaling of external forcing fields immediately after read
700       (removed from external_forcing.F)
701       -> new: surface_fields_scale.F
702       -> affects ini_foorcing.F, external_fields_load.F
703     o Computation of surface tendencies before tendency updates.
704       -> new: external_forcing_surf.F
705     o Change of variable names useGMRedi, useKPP, useECCO
706     o Further changes in dynamics.F, impldiff.F for TAMC
707     o Tested for experiments 0, 2, 4.
708       - not yet tested for GMRedi.
709       - not yet tested for KPP.
710    
711    checkpoint30
712     o Updates for OBCs
713     o New experiment for test OBCs (internal_wave)
714     o New output.txt in verification/exp4/results/
715     o Updates for KPP: calculation of viscosity corrected, new variables
716       kpp_dumpFreq and kpp_taveFreq
717     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
718       and entry for T90 in genmake
719    
720    checkpoint29
721     o packaged KPP and GM/Redi
722    
723    checkpoint28
724     o Corrected initialization of hFacMin for difference vertical coordinates
725     o Modified calculation of partial cell thickness to more robust algorithm
726     o config_summary.F: replaced write_1D_... by write_0D_...
727       read_write.F: added subroutines write_0D_...
728     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
729       included some initialisations required for TAMC.
730     o routine calc_isoslopes: modified sqrt computation to make it
731       differentiable for zero argument.
732     o routines dynamics, impldiff:
733       included store directives and tape key computations required for TAMC.
734     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
735    
736    checkpoint27
737     o fixed calc_isoslopes() to so that cancellation of terms in tensor
738       formulation works properly with variable resolution.
739     o restructured the calling tree between the_model_main() and dynamics()
740     o split initialise() into initialise_fixed() and initialise_varia()
741     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
742       in new routine ini_psurf()
743    
744    checkpoint26
745     o moved some #ifdef in optional routines to encompass everything
746       except the argument declarations. This was using up some memory.
747     o fixed macros like _ADT to work with both versions of Linux cpp
748     o cleaned up some unused and uninitialized variables
749       (helps when debugging with strict compile options)
750     o split up CPP_EEOPTIONS.h into options and macros
751       (macros are now in eesupp/inc/CPP_EEMACROS.h)
752     o patch for 2 processor JAM mode
753    
754    checkpoint25
755     o updates for OBCs and NH
756     o dramatically reduced memory usage
757     o added "JAM" routines for use on Artic network
758     o parameterization of convection by implicit vertical diffusion
759     o added a diagnostic of convective index
760     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
761       (this is was partly for OBCs and NH but also in anticipation of
762        an explicit free-surface option)
763     o initial state input files for U and V
764    
765    checkpoint24
766     o Removed some spurious "REAL"s
767     o Updated KPP to latest version from JPL
768     o Added a COS(latitude) in horizontal viscosity
769    
770    checkpoint23
771     o Added del^4 diffusion for salt and temperature
772     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
773    
774    checkpoint22
775     o Made many small changes: implicit none, format(i5), etc...
776     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
777    
778    checkpoint21
779     o Introduced new I/O package that supports direct-access records (mdsio.F)
780     o Split-up mid-level I/O routines
781     o Updated input data for experiments 0,1,2,4 and 5
782     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
783    
784    checkpoint20
785     o Tidied up open-boundaries some more
786     o Added non-hydrostatic code
787     o Fixed some input data
788     o Modified MPI start-up to work in "coupled" context.
789    
790    checkpoint19
791     o Tidied up directory structure for verification experiments.
792     o Added new code for open boundaries.
793     o Corrected advective terms near boundaries.
794     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
795     o Implemented free-slip/no-slip BCs and del^4 dissipation.
796     o Split default parameters out of ini_parms.F into set_defaults.F.
797    
798  checkpoint18  checkpoint18
799   o Further changes for optional code generation with   o Further changes for optional code generation with
800     CPP - ugh!     CPP - ugh!

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