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revision 1.8 by adcroft, Wed Jul 1 22:49:29 1998 UTC revision 1.137 by jmc, Wed Feb 26 03:29:08 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    untagged
7    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
8    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
9    o Added SEAICE_initialHEFF to pkg/seaice
10    
11    checkpoint48g_post
12    --- EOS:
13    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
14      store total Potential in totPhyHyd for diagnostics & EOS.
15    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
16    --- Pressure/geopotential gradient:
17    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
18    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
19      ( changes results of global_ocean_pressure )
20    o NLFS + z-coord.: add eta*Rho' contribution.
21    o accurate phiHyd when using interface-W at the middle between 2 centers
22     ( changes results of ideal_2D_oce )
23    o includes r* 2nd term in potential gradient.
24    
25    checkpoint48f_post
26    Merging from release1_p12:
27    o Modifications for using pkg/exf with pkg/seaice
28      - improved description of the various forcing configurations
29      - added basic radiation bulk formulae to pkg/exf
30      - units/sign fix for evap computation in exf_getffields.F
31      - updated verification/global_with_exf/results/output.txt
32    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
33      (SBO) core products, including oceanic mass, center-of-mass,
34      angular, and bottom pressure (see pkg/sbo/README.sbo).
35    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
36      to avoid negative values in shallow regions.
37      - updated verification/natl_box/results/output.txt
38      - updated verification/lab_sea/results/output.txt
39    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
40    o Added useSingleCpuIO option (see PARAMS.h).
41    o Updated useSingleCpuIO option in mdsio_writefield.F to
42      work with multi-field files, e.g., for single-file pickup.
43    o pkg/seaice:
44      - bug fix in growth.F: QNET for no shortwave case
45      - added HeffFile for specifying initial sea-ice thickness
46      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
47    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
48      kpp_transport_t.F, forward_step.F, and the_main_loop.F
49    o pkg/seaice:
50      - adjoint-friendly modifications
51      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
52    
53    checkpoint48e_post
54    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
55    o dynamics: change definition of computational domain & adapt mom_fluxform
56      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
57    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
58        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
59        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
60        global_ocean.90x40x15 global_with_exf global_ocean_pressure
61        inverted_barometer solid-body.cs-32x32x1
62      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
63    
64    checkpoint48d_post
65    o in preparation for r*:
66     a) use pre-computed gradient of hydrostatic potential:
67        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
68     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
69        => affects results of glob_oce_pressure (different truncation error)  
70      update output.txt of ideal_2D_oce & global_ocean_pressure
71    
72    checkpoint48d_pre
73    o in preparation for r*:
74      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
75      pass the 2 comp. of the grad. as arguments to momentum S/R.
76      but for the moment, only used if it does not change the results.
77    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
78    
79    checkpoint48c_post
80    Modifications in treatment of initial flux forcing controls
81    to avoid extra storing of flux fields.
82    
83    checkpoint48c_pre
84    o Added tidal_basin_2d experiment (currently 1D!)
85    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
86    
87    checkpoint48b_post
88    o r* coordinate added in #ifdef NONLIN_FRSURF block.
89     (modification to pressure gradient not yet implemented)
90    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
91      (for U & V) that are used for vertical advection of momentum.
92    
93    checkpoint48a_post
94    o In preparation for r*, use temp. array to compute vertical transport
95       in flux-form momentum pkg. => change results of few test-exp.
96      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
97                        lab_sea, natl_box & plume_on_slope
98    
99    checkpoint48
100    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
101    
102    checkpoint47j_post
103    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
104    o moved adexch from forward_step to addummy_in_stepping
105    o added exch in ctrl_map_...
106    o aveFreq.=0. at end of cost_final to avoid overwrite in
107      reverse checkpointing loop
108    o Yet more changes in gmredi:
109      * adgmredi_calc_tensor
110        avoiding all recomputation of gmredi_slope_limit
111      * adgmredi_x/y/rtransport
112        added flag for excessive storing to avoid recomp. of
113        u/v/rtans, dTdx/y/z
114        -> this is not really necessary and very memory-consuming
115      * adgmredi_slope_psi:
116        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
117      * gmredi_slope_limit
118        re-activated full calculation of taperfct for case 'ac02'
119    o updating verification/ adjoints of carbon, global_ocean.90x40x15
120    
121    checkpoint47i_post
122    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
123    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
124      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
125    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
126    o gmredi: fix few bugs.
127    
128    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
129    This will be a good checkpoint to plug into the ecco-branch.
130    o few modif.'s to get latest version adjointed
131      (mainly kick out code in ini_linear_phisurf)
132    o modif's to run adjoint with exactConserv
133    o case GM_BOLUS_ADVEC should be cleaned
134      S/R gmredi_slope_psi should be cleaned
135    o verification/carbon now has exactConserv=.TRUE.
136    
137    checkpoint47g_post
138    o time-average AIM output: becomes independent from statvars time-average
139      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
140    o After TAF bug fix:
141      Tested adjoint of gmredi package.
142      Tests were done with checkpoint47 rather than with latest
143      checkpoint47f_post since the latter is broken for the adjoint
144      verification/carbon/ contains both ADM and TLM gradient checks.
145    Here they are, before they get changed/lost/stolen.
146    Mostly modif.'s to fix numerical sensitivities.
147    Gradient checks OK for
148    - GM_taper_scheme:
149      * clipping
150      * ac02
151      * linear
152      * glw91
153      * dm95
154      * ldd97
155    - GMREDI_OPTIONS:
156      * GM_VISBECK_VARIABLE_K
157      * GM_NON_UNITY_DIAGONAL
158      * GM_EXTRA_DIAGONAL
159      * GM_BOLUS_ADVEC
160    in conjunction with data.gmredi parameters to be checked in
161    in a few minutes under verification/carbon/code/
162    
163    checkpoint47f_post
164    Merging from release1_p10:
165    o modifications for using pkg/exf with pkg/seaice
166      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
167        and SEAICE_EXTERNAL_FLUXES
168      - pkg/exf CPP options EXF_READ_EVAP and
169        EXF_NO_BULK_COMPUTATIONS
170      - usage examples are Experiments 8 and 9 in
171        verification/lab_sea/README
172      - verification/lab_sea default experiment now uses
173        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
174    
175    checkpoint47e_post
176    o created a tag prior to creating a branch
177    
178    checkpoint47d_post
179    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
180      at the bottom boundary had an erroneous half slip boundary condition
181    o added bottom drag and no slip boundary condition capabilities to
182      oceanic pressure coordinates code
183    o added new verification experiment global_ocean_pressure, this experiment is
184      also described in the tutorial section of the manual
185    checkpoint47d_pre
186    
187    checkpoint47c_post
188    o Added a verification experiment for a global cubed-sphere ocean run
189      -  verification/global_ocean.cubed32x32x30
190      -  uses pkg/therm_seaice and pkg/bulk_forcing
191    
192    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
193    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
194      when using P-coordinate; only implemented for atmospheric config.
195    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
196      NOTES: requires option NONLIN_FRSURF to be "#define".
197    o update advect_xz/results/output.txt (left from checkpoint44g_post)
198    
199    checkpoint47b_post
200    Merging from release1_p9:
201    o pkg/seaice
202      - removed GOTO's and added taf directives
203      - double precision constants to reduce the g77 (Linux)
204        to F77 (SGI) differences reported in release1_p8
205    o tools/genmake
206      - added SGI options
207    o verification/testscript
208      - updated to that of checkpoint47a_post
209    o verification/global_ocean.90x40x15/input/eedata
210      - modified for SGI f77 compatibility
211    o verification/lab_sea
212      - added description of sea-ice model
213      - added missing matlab routines
214      - added test of thermodynamics parallelization
215    
216    checkpoint47a_post
217    o new pkg: aim_v23
218     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
219       for now, keep the same surface forcing as before.
220     - Part-Cell implemented into AIM; check that Heat & Water are conserved
221     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
222     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
223    o add diagnostic of surface correction term in monitor output
224    
225    o bulk_force and therm_seaice
226    - Two packages:  bulk_force (Bulk forcing)
227      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
228    - Earlier integration from Stephaine Dutkiewicz
229      and Patrick Heimbach.
230    - Two ifdef statements for compile time,
231       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
232    
233    checkpoint47
234    differentiable version of checkpoint46n_post
235    o bug fix in quasihydrostaticterms
236    o * "clean" adjoint code (in terms of extensive recomputations)
237        can now be obtained for all GMREDI options (i.e. for
238        - GM_VISBECK_VARIABLE_K
239        - GM_NON_UNITY_DIAGONAL
240        - GM_EXTRA_DIAGONAL
241        - GM_BOLUS_ADVEC )
242      * However, wrong gradient check problem remains unsolved.
243      * New CPP options have been introduced for different
244        tapering schemes
245    o external_fields_load now part of differentiation list
246    o pressure needs multiple storing;
247      would be nice to have store_pressure at beginning or
248      end of forward_step, e.g. by having phiHyd global (5-dim.)
249      (NB: pressure is needed for certain cases in find_rho,
250      which is also invoked through convective_adjustment).
251    o recomputations in find_rho for cases
252     'JMD95'/'UNESCO' or 'MDJWF' are OK.
253    o #define ATMOSPHERIC_LOADING should be differentiable
254    o ini_forcing shifted to begining of initialise_varia
255    o Incorporating QNVS line search routines into MITgcm
256      (this is separate code, and therefore not under pkg)
257      lsopt/, optim/
258    o Updated verification/carbon/
259      - #define GM_VISBECK_VARIABLE_K
260      - GM_taper_scheme    = 'ldd97'    
261    
262    checkpoint46n_post
263    Merging from release1_p8:
264    o verification/natl_box:
265      updating new external_fields_load routine
266    o New package: pkg/seaice
267      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
268      The sea-ice code is based on Hibler (1979-1980).
269      Two sea-ice dynamic solvers, ADI and LSR, are included.
270      In addition to computing prognostic sea-ice variables and diagnosing
271      the forcing/external data fields that drive the ocean model,
272      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
273      The implied surface heat flux is then stored in variable
274      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
275      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
276      non-local transport term.  Because this call precedes model
277      thermodynamics, temperature under sea-ice may not be "exactly" at
278      the freezing point by the time theta is dumped or time-averaged.
279      N.B.: fairly large differences in accuracy occur across
280            different platforms/compilers; comparison between
281            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
282            generated output gives:
283       T           S           U           V
284      C D M    c        m  s        m  s        m  s        m  s
285      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
286      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
287      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
288    
289      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
290    o GAD:
291      - generated new common blocks to account for call of
292        same gad routines with differing traceridentities
293        (needed to modify tracerIdentity indices in GAD.h)
294      - generated separate common blocks for case useCubedSphereExchange
295        (Department of Futurology)
296      - parameter lists to gmredi_?transport: added tracerIdentity
297      - added new key indices to tamc.h
298    o external_fields_load:
299      - added this routine to TAF list
300      - needed to make some common blocks global and additional storing
301        along the same lines as exf package (checkpoint_lev?_directives.h)
302    o exf:
303      updated external forcing package
304      - bug fixes carried over from ecco-branch
305        (missing OBCS_OPTIONS.h in two routines)
306      - enable easy to use "no forcing".
307      - added exf I/O for atmospheric loading
308      - added exf I/O for runoff data
309      - transfered scaling between exf <-> MITgcm to exf namelist
310    o Adding new verification experiment global_with_exf.
311      This verification experiment is almost identical to the
312      global_ocean.90x40x15 experiment, except that it uses
313      the exf (and cal) package instead of the
314      external_fields_load routine (cf README file).
315    
316    checkpoint46m_post
317    o modified testscript to return -- when there are no lines of "%MON" output
318    o added new flag "quasiHydrostatic" for QH mode
319      and new routine quasihydrostaticterms()
320    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
321      New routine: mom_u_coriolis_nh()
322    o fixed sign of non-hydrostatic metric terms in u and v equations.
323      Depend on correct sign of gravitySign.
324    o added work.pc* to .cvsignore in aim directories using ifc
325    o introduced flag for controllin non-hydrostatic metric terms
326    o removed gravitySign from PARM04
327    o switched to g77/ifc from pgf77 in aim experiments
328    
329    checkpoint46l_post
330    o made convective adjustment work with pressure coordinates:
331     - changed the direction of k-loop in convective_adjustment.F for the
332       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
333     - adjusted the reference pressure k-index in convective_adjustment.F
334     - adjusted the convection condition in convect.F (in analogy to
335       calc_ivdc.F)
336     - convective_adjustment no longer computes anything on the halos
337     - removed the warnings about negative salinity from find_rho.F and
338       find_alpha.F; instead the new routine look_for_neg_salinity, called
339       at the beginning of find_rho, find_alpha, and find_beta, does a
340       check of the entire slice, if CPP-option
341       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
342    checkpoint46l_pre
343    
344    checkpoint46k_post
345    o fixed the verification/global_ocean.90x40x15 experiment:
346     - new bathymetry (the world according to A., JMC, and M.)
347     - new initial fields and forcing fields (*.bin files)
348     - new POLY3.COEFFS (for the next release one should switch to a full
349       equation of state: JMD95P or MDJWF)
350     - fixed several errors and redundancies in the data file
351     - experiment uses looped cells
352     - added matlab directory with diagnostic scripts for plotting of output
353    
354    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
355     - read AIM physics parameters from a file (data.aimphys)
356     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
357    
358    checkpoint46j_post
359    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
360    o move wVel computation at the end of the time step, in S/R integr_continuity
361    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
362    o update timeave pkg for wVel diagnostic.
363    checkpoint46j_pre
364    
365    checkpoint46i_post
366    o Clean up AIM package (and keep the results unchanged):
367      include CPP_OPTION and use IMPLICT NONE in all routines ;
368      declare all the variables _RL ; use _d 0 for all numerical constants.
369      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
370    
371    checkpoint46h_post
372    o cleaned up the use of rhoNil and rhoConst.
373      - rhoNil should only appear in the LINEAR equation of state, everywhere
374        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
375        and the dynamical equations are all divided by rhoConst
376    o introduced new parameter rhoConstFresh, a reference density of fresh
377      water, to remove the fresh water flux's dependence on rhoNil. The default
378      value is 999.8 kg/m^3
379    o cleanup up external_forcing.F and external_forcing_surf.F
380      - can now be used by both OCEANIC and OCEANICP
381    checkpoint46h_pre
382    
383     Added code to convert surface volume flux (fresh water) into
384     a mass flux when using P coordinates in the ocean (OCEANICP).
385     Note: It assumes you have set rho0=rhoConst=density of fresh water.
386    
387    checkpoint46g_post
388    o Include a new diagnostic variable phiHydLow for the ocean model
389      - in z-coordinates, it is the bottom pressure anomaly
390      - in p-coordinates, it is the sea surface elevation
391      - in both cases, these variable have global drift, reflecting the mass
392        drift in z-coordinates and the volume drift in p-coordinates
393      - included time averaging for phiHydLow, be aware of the drift!
394    o depth-dependent computation of Bo_surf for pressure coordinates
395      in the ocean (buoyancyRelation='OCEANICP')
396      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
397        Theta, Salinity, and Pressure in the parameter list. This routine is
398        presently contained in find_rho.F. This routine does not give the
399        correct density for 'POLY3', which would be a z-dependent reference
400        density.
401    o cleaned up find_rho
402      - removed obsolete 'eqn' from the parameter list.
403    o added two new verification experiments: gop and goz
404      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
405    checkpoint46g_pre
406    
407    checkpoint46f_post
408    o Enable tangent linear (forward mode) gradient checks:
409      - extended active file handling to g_... files
410      - added TANGENT_SIMULATION to theSimulationMode
411      - extended grdchk package accordingly
412    o added tangent linear setup in verification/carbon/code_ftl
413    o added adjoint setup in verification/front_relax/code_ad
414    
415    checkpoint46e_post
416    o Added new equation of state -> MDJWF
417      - EOS of McDougall et al., 2002, JAOT, submitted
418      - caveat: the equation of state is only valid for a smaller (more
419        realistic?) range of values than JMD95P/Z and UNESCO
420      - added masks to the calculation of pressure in store_pressure
421      - added more check values for density in check_eos (ini_eos.F), some of
422        the old check values are out of the range of the MDJWF-eos, so don't
423        expect perfect matches for those
424    checkpoint46e_pre
425    
426    checkpoint46d_post
427    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
428      'OCEANICP', also initialised field pressure correctly in ini_eos in the
429      case of pressure coordinates. eosType='JMD95Z' in
430      combination with buoyancyRelation='OCEANICP' now causes an error.
431    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
432      in find_alpha/beta.
433    checkpoint46d_pre
434    
435    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
436      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
437    
438    checkpoint46c_post
439    o Changes necessary for ocean in p-coordinates
440     -  Added new buoyancy relation = 'OCEANICP'
441     -  Added new parameters = gravitySign (this used to be contained inside
442        the factor dRdZ which I added when we first switched to R coordinates).
443     X GM/Redi is not compatible (yet)
444     X bottom drag and no-slip need to be debugged.
445    checkpoint46c_pre
446    
447    checkpoint46b_post
448    o Added new equation of state -> JMD95Z and JMD95P
449      - EOS of Jackett and McDougall, 1995, JAOT
450      - moved all EOS parameters into EOS.h
451      - new routines ini_eos.F, store_pressure.F
452    o Added UNESCO EOS, but not recommended because it requires
453      in-situ temperature (see JMD95)
454    o Modified formatting for knudsen2.f in utils/knudsen2 and added
455      unesco.f to be used with POLY3
456    checkpoint46b_pre
457    
458    checkpoint46a_post
459    o Added (atmospheric) pressure loading
460      - new field in FFIELDS.h, etc...
461      - new cpp flag ATMOSPHERIC_LOADING
462    o Changed hFacC to _hFacC in calc_phi_hyd.F
463    o Added SHORTWAVE_HEATING to some files for consistency
464    checkpoint46a_pre
465    
466    checkpoint46
467    further merges from release1_p5
468    o new ctrl package
469      - adopted from ECCO environment to enable optimization
470      - added Eliassen Palm fluxes to controls
471    o added Eliassen Palm flux controls to gradient check package
472    o cost package
473      - Compatible with new ctrl package
474      - added Eliassen Palm cost hooks
475      - modif's of existing cost functions
476    o Adjoint-related bug fixes in kpp:
477      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
478      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
479    o autodiff package
480      - flow directives:
481        + new for S/R do_the_model_io
482        + enhanced for S/R checkpoint
483        + new gmredi.flow
484      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
485        disable adcommon.h/g_common.h by default.
486      - fixed problem for adjoint of global_max
487    o modified verification/carbon/
488    o New setup for adjoint of global_ocean
489    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
490    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
491    o incorporated hooks for sponge layer code (external_forcing.F)
492    
493    checkpoint45d_post
494    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
495    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
496      (affects plume_on_slope "cg2d" output)
497    o add new parameter deltaTfreesurf for free-surface time stepping
498    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
499    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
500    o change phiMin in exp1 (to agree with documentation)
501    o add new flags:
502     - T,S forcing inside/outside Adams-Bashforth
503     - turn off temp,salt advection and/or forcing
504     - for each tracer, define internal flag for multiDimAdvection & A-B
505    o monitor: change definition of KE to check conservation of Energy
506    
507    checkpoint45c_post
508    o Removed f90 comments ("!")
509    o Modified initialisations to enable exf package for MITgcm
510      (without invoking ECCO_PACKAGE).
511    o modifications to gradient check package (Martin Losch)
512      - enable centered differences
513      - modified format of standard output
514    
515    checkpoint45b_post
516    o cleaned exchange calls in cg2d
517    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
518    o included CPP option SINGLE_LAYER_MODE in thermodynamics
519      to configure barotropic setup (Martin Losch)
520    o moved some initialisations within bi,bj loop in dynamics
521      (TAF flow dependency)
522    o in initialise_varia, moved call packages_init_variables
523      before convective_adjustment_init
524      (corresponding adjustment of TAF tape initialisation).
525    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
526    
527    checkpoint45a_post
528    o compute Rho over the whole domain (extend iMin,jMin indices)
529    o specific exchange for X-slice domain (case Ny=1)
530    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
531    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
532    
533    checkpoint44h_post = checkpoint45
534    o Fix to restore differentiability:
535      place at which packages_init_variables is called in
536      initialise_varia is crucial for reverse control flow.
537    o modifications in GMRedi to enable stable adjoint
538      (corresponding modif's in thermodynamics, dynamics)
539    o added missing hook for sponge layer code in external_forcing
540    o modified test cost functions
541    o storing in gad_advection (plus removal of write(0,*)!
542    o missing headers TR1.h added in convective_adjustment routines
543    o errorMessageUnit set non-equal zero in eeboot
544      (conflict on some platforms, e.g. IBM SP3)
545    o modified carbon verif.
546    
547    checkpoint44h_pre
548    o vertical grid option: allow to put the Interface at the middle between
549      2 cell-centers ; replace delZ in pkg/kpp by drF.
550    o GM Advective form: Tracers are advected using the residual transport (=
551      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
552    
553    checkpoint44g_post
554    o fix surface correction term in multiDimAdvection (affects plume_on_slope
555      results) ; ifdef missing in thermodynamics.F
556    
557    checkpoint44f_pre,checkpoint44f_post
558    o added PTRACERS package
559      This allows an arbitrary number of passive tracers to be integrated
560      forward simultaneously with the dynamicaly model.
561      + Implemented so far:
562        - basic forward algorithm (time-stepping, advection, diffusion, convection)
563        - I/O and checkpointing
564        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
565      + Not implemented so far:
566        - KPP
567        - OBCS
568      + No specific example supplied (yet) but global_ocean.90x40x15 has the
569        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
570        line in data.pkg.
571      + This package is disabled by default since it increases storage.
572    
573    
574    o testscript: added -cleanup option
575    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
576                 b) enable to filter 2D fields.
577    
578    checkpoint44e_pre,post
579    o re-wrote convective adjustment to use pre-calculated weights
580      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
581      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
582      Original calls to convect() still in place.
583    
584    chkpt44d_pre,post
585    o added missing EXCLUDE_MONITOR flags
586    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
587      (incompatible typ in MIN/MAX expressions caused problems
588      on IBM SP3)
589    o in genmake added variable MAKEDEPEND
590      plus resetting for case SunOS
591    o added timer_stats.c routine for IBM SP3
592    o removed variables in dynamics
593    !!! I forgot to create tag chkpt44d_pre !!!
594    !!! But chkpt44d_pre = chkpt44c_post    !!!
595    
596    o real fresh water flux implemented with non-linear free-surface.
597    
598    chkpt44c_pre,post
599    o few fix (mask in shap_s2, EmPmR in external_field_load,
600      USE_NATURAL_BCS in solve_for_P);
601    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
602    
603    checkpoint44b_pre/_post
604    o merge of relevant stuff from the ecco-branch:
605      - genmake: removed $S64 overwrite for case SunOS
606      - pkg/exf: update and corrections for field swapping and obcs
607      - pkg/ecco: parameter lists for the_model_main, the_main_loop
608                  harmonized between ECCO and MITgcm
609      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
610                      updated checkpointing_lev... lists for obcs
611      - model/src: minor changes in forward_step, plot_field
612                   added directive for divided adjoint in the_main_loop
613      - pkg/mdsio: added mdsio_gl_slice
614    
615    o check parameters & config (chkpt44a_pre,post)
616    o OBC and NonLin_FrSurf.
617    
618    checkpoint44
619    o fix bug in mom_vi_del2uv
620    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
621    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
622    o update AIM experiments (NCEP input files)
623    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
624    o added some stuff for AD
625    
626    checkpoint43
627    o added two new advection tests
628    o added global 4x4 degree ocean test
629    o added test of H&S94 with free surface on cube
630    o some final mods for gradient check, adjoint,...
631    
632    checkpoint42
633      Fixed AD-related problems:
634    o Store directives up-to-date with re-arranged Adams-Bashforth
635      (mainly thermodynamics.F)
636    o New store directives for multi-dim. advection schemes
637      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
638      * new common block and key passkey
639      (mainly gad_advection.F)
640    o Modified store directives for split of dynamics/thermodynamics
641      for the case ALLOW_KPP
642    o Cleaned argument list for timestep_tracer.F
643    
644    checkpoint41
645    o re-formatted/added comments in prologues of key subroutines
646      to work with protex
647    
648    checkpoint40
649    o moved calc_gs, calc_gt and calc_tr1 back to model/src
650    o added FLT (floats) package from Arne along with demo. experiment
651    o re-arranged Adams-Bashforth scheme for tracers to allow easier
652      implementation of forward-in-time forcing terms
653    o more mods for non-linear free-surface including new variable
654    o modified multi-dim method to work on cube
655    o bug fix in KPP (from DM)
656    
657    checkpoint40pre9
658    o added DST advection schemes
659    o fix MPI bug on SGI's
660    o modifications for non-linear free-surface
661    o fixed conditionals for fixed flow/passive tracer only mode
662    o added tension/strain form of stress tensor
663    o changes to commenting of arguments for TAF/TAMC
664    o added/updated many matlab scripts
665    o added multi-dimensional advection method for tracers
666      
667    checkpoint40pre8
668    o new package rw/
669      Added method for dumping intermediate local arrays:
670      mdsio_writetile - same as mdsio_writefield except works from inside
671                        bi,bj loop
672      mdsio_writelocal - same as mdsio_writetile except works for local
673                         arrays
674      write_local_r? - higher-level wrapper for mdsio_writelocal
675      Controlled by diagFreq. Defaults to zero (ie. no dumps)
676      Example given at end of mom_vecinv.F that dumps some local arrays.
677    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
678      control flux-form versus vector invariant code.
679      Switch is runtime flag vectorInvariantMomentum (defaults to false)
680      or genmake -DISABLE ...
681    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
682      (additional storing is now needed for case vecinv;
683      currently nothing implemented to switch this storing off
684      in case fluxform is used since no CPP flag available).
685    
686    checkpoint40pre7
687    o bug fix in dynamics.F
688      calc_viscosity called before k=1,Nr loop.
689    o added some #ifdef's ALLOW_PASSIVE_TRACER
690    o cleaned initialisations in ctrl_map_ini
691      related to TAF
692    
693    checkpoint40pre6
694    o split dynamics into thermodynamics & dynamics
695    o corresponding split of calc_diffusivity into
696      calc_diffusivity, calc_viscosity
697      (kpp_calc_diff, kpp_calc_visc).
698    o Added diffkr, kapgm to control variables
699    o bug fix in gmredi_slope_limit for ldd97
700    
701    checkpoint40pre5
702    o proper initialization of Adams-Bashforth time stepping
703      + uses forward step for very first step of model (iter=0)
704    o re-generated *all* output since almost all output is modified by this
705      change (sorry but we've been putting this one off for about 2 years)
706      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
707        *not* regenerated since they are already out of date and I don't
708        want to create the impression that they are suddenly working.
709    o removed KAP stuff for DEC's
710    o modified/added many .cvsignore files in */code and */input
711    o added new expt "solid-body.cs-32x32x1"
712      + this uses an alternative form of ini_curvilinear_grid.F which
713        is not necessarily any better than the current one...
714    
715    checkpoint40pre4
716    o added re-initialisations of utrans,vtrans,rtrans in
717      calc_common_factors which are crucial for TAF.
718    o extended iMin,jMin range for calc_common_factors,
719      calc_diffusivity
720    o added option ALLOW_PASSIVE_TRACER
721    o a few minor updates and fixes
722    
723    checkpoint40pre3
724    o created calc_gtr1.F for gad package
725    o split the_main_loop and re-introduced forward_step
726    o some recomputations of nIter0 for TAMC
727    
728    checkpoint40pre2
729    o Updated to latest branch of AJA, JMC
730    o Added gradient check package
731    o Added routines for passive tracer handling
732    o Added carbon sequestration sensitivity experiment
733    
734    checkpoint39
735     o Modifications and fixes to support TAMC
736       (mainly missing or wrong directives)
737     o Corrected common blocks when fooling TAMC to produce adjoint I/O
738       in addummy_in_stepping
739     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
740     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
741     o Included following packages:
742       cal: calendar
743       exf: external forcing
744       ecco: essential routines to control use of cal, exf
745             (NB: this is not the full ECCO environment)
746     o disabled some packages by default in genmake
747    
748    checkpoint38
749     o see notes_c37_adj.txt
750     o corrected wrong layer index in external_forcing_t
751     o replaced the_main_loop/forward_step by the_main_loop
752     o removed forceoutput from write_state
753       (replaced criteria for initial/final state)
754     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
755    
756    checkpoint37
757     o mdsio.F routine split and packaged in pkg/mdsio
758       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
759        used unless genmake -disable=mdsio)
760     o allow a more precise surface-geopotential gradient for the atmosphere
761       taking into account the change in space of Alpha (=1/rho) at the surface.
762     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
763       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
764     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
765       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
766       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
767     o Time-Average diagnostics defined as a pseudo package "timeave".
768     o pickup files : old pickup (before c35) did not work with new code (c35
769       and after) unless activating 2 commented lines in initialise-varia.
770     o Non-Hydrostatic pickup file Pb fixed.
771     o bug with Rigid-lid version (since c35) fixed.  
772    
773    checkpoint36
774     o implement Crank-Nickelson barotropic time-stepping
775     o recover Time-Average diagnostics
776     o fix Pb in checkpoint (PR#19)
777     o AIM become a standard package ; clean unused CPP_kees
778    
779    checkpoint35
780     o subtantial rewrite of dynamics.f
781     o allows staggered time-stepping
782     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
783     o added bottom drag (linear + quadratic)
784    
785    checkpoint34
786     o Modified exchange routines for correct reverse simulation.
787     o Added verification output to comply with bug fix in impldiff.F
788       as of c33 (exp2, natl_box).
789     o Corrected store directives in dynamics.F
790     o Corrected array boundaries in impldiff.F
791     o Corrected array dimensions in gmredi.
792       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
793     o Added routine GLOBAL_SUM_INT to global_sum.F
794     o Added mdsio_gl.F for ECCO purposes.
795    
796    checkpoint33
797     o Fixed bug in lower BC in impldiff.F
798     o Fixed confusion about units of forcing arrays in FFIELDS.h
799       namely Fu,Fv,Qnet,Qsw,EmPmR:
800       - Removed verification/natl_box/code/external_fields_scale.F
801         (did not differ from that in model/src)
802       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
803         (see FFIELDS.h for description)
804       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
805         kpp_calc.F and kpp_transport_t.F
806       - Removed model/src/external_fields_scale.F and calls to it
807       - verification/natl_box uses flux data with "atmospheric" sign so
808         a special version of external_fields_load.F is used to
809         change the data as it's read in. This way, the arrays
810         have the right units and signs at all times tha a user could
811         possibly use them.
812     o Corrected genmake to delete a temporary file during configuration
813    
814    checkpoint32
815     o Scaling of forcing fields moved from external_forcing.F to
816       external_fields_scale.F, called directly after loading fields.
817     o Surface relaxation terms added to surface tendency fields in
818       extra subroutine.
819     o impldiff.F changed to avoid storing by TAMC of huge intermediate
820       fields.
821     o Changes in GMRedi to comply with packaging structure.
822     o Modifications and bug fixes in KPP package.
823     o Verification experiment for KPP added (verification/nat_box/)
824    
825    checkpoint31
826     o Packages interface brought in line with defined standard
827       -> new routines packages_...F
828       -> changes in initialise_fixed.F, initialise_varia.F
829       -> enables initialisation interface for ECCO package
830     o Rescaling of external forcing fields immediately after read
831       (removed from external_forcing.F)
832       -> new: surface_fields_scale.F
833       -> affects ini_foorcing.F, external_fields_load.F
834     o Computation of surface tendencies before tendency updates.
835       -> new: external_forcing_surf.F
836     o Change of variable names useGMRedi, useKPP, useECCO
837     o Further changes in dynamics.F, impldiff.F for TAMC
838     o Tested for experiments 0, 2, 4.
839       - not yet tested for GMRedi.
840       - not yet tested for KPP.
841    
842    checkpoint30
843     o Updates for OBCs
844     o New experiment for test OBCs (internal_wave)
845     o New output.txt in verification/exp4/results/
846     o Updates for KPP: calculation of viscosity corrected, new variables
847       kpp_dumpFreq and kpp_taveFreq
848     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
849       and entry for T90 in genmake
850    
851    checkpoint29
852     o packaged KPP and GM/Redi
853    
854    checkpoint28
855     o Corrected initialization of hFacMin for difference vertical coordinates
856     o Modified calculation of partial cell thickness to more robust algorithm
857     o config_summary.F: replaced write_1D_... by write_0D_...
858       read_write.F: added subroutines write_0D_...
859     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
860       included some initialisations required for TAMC.
861     o routine calc_isoslopes: modified sqrt computation to make it
862       differentiable for zero argument.
863     o routines dynamics, impldiff:
864       included store directives and tape key computations required for TAMC.
865     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
866    
867    checkpoint27
868     o fixed calc_isoslopes() to so that cancellation of terms in tensor
869       formulation works properly with variable resolution.
870     o restructured the calling tree between the_model_main() and dynamics()
871     o split initialise() into initialise_fixed() and initialise_varia()
872     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
873       in new routine ini_psurf()
874    
875    checkpoint26
876     o moved some #ifdef in optional routines to encompass everything
877       except the argument declarations. This was using up some memory.
878     o fixed macros like _ADT to work with both versions of Linux cpp
879     o cleaned up some unused and uninitialized variables
880       (helps when debugging with strict compile options)
881     o split up CPP_EEOPTIONS.h into options and macros
882       (macros are now in eesupp/inc/CPP_EEMACROS.h)
883     o patch for 2 processor JAM mode
884    
885    checkpoint25
886     o updates for OBCs and NH
887     o dramatically reduced memory usage
888     o added "JAM" routines for use on Artic network
889     o parameterization of convection by implicit vertical diffusion
890     o added a diagnostic of convective index
891     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
892       (this is was partly for OBCs and NH but also in anticipation of
893        an explicit free-surface option)
894     o initial state input files for U and V
895    
896    checkpoint24
897     o Removed some spurious "REAL"s
898     o Updated KPP to latest version from JPL
899     o Added a COS(latitude) in horizontal viscosity
900    
901    checkpoint23
902     o Added del^4 diffusion for salt and temperature
903     o Multiple minor fixes (implicit none's, arguments to global_sum, etc.)
904    
905    checkpoint22
906     o Made many small changes: implicit none, format(i5), etc...
907     o Introduced KPP mixing scheme (compiles and runs but *not* tested)
908    
909    checkpoint21
910     o Introduced new I/O package that supports direct-access records (mdsio.F)
911     o Split-up mid-level I/O routines
912     o Updated input data for experiments 0,1,2,4 and 5
913     o Finally removed the genmake.* scripts (everyone seems happy with genmake)
914    
915    checkpoint20
916     o Tidied up open-boundaries some more
917     o Added non-hydrostatic code
918     o Fixed some input data
919     o Modified MPI start-up to work in "coupled" context.
920    
921    checkpoint19
922     o Tidied up directory structure for verification experiments.
923     o Added new code for open boundaries.
924     o Corrected advective terms near boundaries.
925     o Added CPP flag for "old UV" geometry and corrected spherical geometry.
926     o Implemented free-slip/no-slip BCs and del^4 dissipation.
927     o Split default parameters out of ini_parms.F into set_defaults.F.
928    
929    checkpoint18
930     o Further changes for optional code generation with
931       CPP - ugh!
932    
933    checkpoint17
934     o Beginning to incorporating modularity
935       for supporting atmos. and ocean configs.
936     o Small changes for TAMC complinace
937     o New ultra simple test case. Barotropic box
938       configuration "exp0".
939    
940    checkpoint16
941     o Minor changes to exchange routines to support
942       accumulation in reverse mode. Adjoint of an
943       assignment is an addition.
944     o Changes to support compilation by TAMC (LR(1)
945       syntax) and by g77 under Linux ( 72 character
946       limit ).
947    
948    checkpoint15
949     Rewrote exchange routines to allow
950     o General tile <-> tile connectivity.
951     o TAMC reverse mode flag ( is this really needed? )
952     o Variable width overlap and exchange region widths.
953     o Hooks for sharing data via DMA, Arctic, Memory Channel,
954       shmput/shmget, VIA, SYSV shmem and every other cool
955       communication method.
956    
957    checkpoint14
958     Consistent isomorphism chages made. These allow dynamical core
959     to support both pressure and meters as a vertical coordinate.
960    
961    checkpoint13
962     Release which corrects global_max problem and a couple
963     of KGM time-averaging diagnostic errors. Also contains
964     a double-gyre experiment setup as well as the baseline
965     4 degree global template. The double gyre template is
966     organised to allow it to be applied automatically to
967     the baseline configuration.
968    
969    branch-point-rdot
970     A few tidy-ups have been made bt the real point of this
971     check-point (excuse the pun) is to allow a branch to be
972     made for the purposes of adding the rDot alterations.
973     I don't want to commit the rDot to the main-trunk until
974     we've actually tested it...
975    
976    checkpoint12
977     Tidy up and added generic genmake script (formerly
978     configure script).
979     Released to testers.
980    
981    checkpoint11
982     Re-arranged initialise() and introduced ini_vertical_grid()
983     and ini_masks_etc().
984    
985  checkpoint10  checkpoint10
986   Introduced the configure script.   Introduced the configure script.
987   Separated out the diags package.   Separated out the diags package.

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