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revision 1.25 by adcroft, Wed Apr 5 15:37:10 2000 UTC revision 1.155 by mlosch, Wed May 14 09:22:09 2003 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    checkpoint50e_post
6    o make KPP work with PTRACERS
7     - fix gad_calc_rhs to call new routine kpp_transport_ptr, which is
8       nearly a copy of kpp_transport_s
9     - there is no analogue to SurfaceTendencyS, so I have to use
10       gPtr(of the surface layer) instead
11    o add a new platform SunFire+mpi (SunFire 15000) to genmake
12    checkpoint50e_pre
13    
14    checkpoint50d_post
15    o change kpp output from multiple-record state files to single-record state
16      files analogous to write_state.F
17    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
18      analogous to the cg2d-related output.
19    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512,
20      so that writing to internal file fn (with length 512) fails.
21    checkpoint50d_pre
22    
23    checkpoint50c_post
24    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
25    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
26    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
27    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
28    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
29    
30    checkpoint50c_pre
31    Merging from release1_p13:
32    o bug fix for pkg/seaice dynamic solver
33    o Added SEAICE_initialHEFF to pkg/seaice
34    
35    checkpoint50b_post
36    o store u*,v* in gU,V instead of in guNm1,gvNm1
37    o in order to put the momForcing out of the Adams-Bashforth:
38      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
39      to timestep.F
40    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
41    o re-generate output for highly sensitive test-exp:
42       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
43    
44    checkpoint50b_pre
45    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
46    o corrected CPP option mismatch in exf_Bulk... functions for case
47      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
48    
49    checkpoint50a_post
50    o Bug fix for merging between c50 and KPP.
51      ikey was passed from thermodynamics to kpp_calc via
52      common block rather than being recomputed in kpp_calc,
53      in contradiction with new key itdkey.
54      New key ikppkey created, and tamc.h headers updated.
55    
56    checkpoint50
57    - 2nd step of merge with ecco-branch:
58      merge changes in ecco-branch back into main trunk
59    - bug fix in find_alpha
60    - more storing in gmredi_calc_tensor.F, kpp_routines.F
61    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
62    - merged some sliced AD support routines
63    
64    checkpoint49
65    merged from ecco-branch:
66    o exf:
67      - Enable initialisation of forcing fields to constant
68        (runtime) values.
69      - in exf_getffields.F
70        Reduce i-/j-loop to interior domain, discarding overlaps.
71        That also fixes wrong TAF-key computations for key_1, key_2
72        with bulf formulae.
73      - exf_init.F modify #ifdef for exf_init_evap
74      - exf_getffieldrec.F, ctrl_getrec.F
75        The following INT-usages are not safe:
76          fldsecs  = int(fldsecs/fldperiod)*fldperiod
77          fldcount = int(fldsecs/fldperiod) + 1
78        and were modified.
79    o autodiff: checkpoint_lev...
80      - updated storing for bulk formulae (some arrays were missing)
81      - added state for seaice package
82      - synchronized with main branch
83    o DIVA:
84      Modif.s in
85      - the_main_loop.F
86      - the_model_main.F
87      and added cost_final_restore.F cost_final_store.F
88      o With these changes, it is possible to fully separate
89        the first forward run to compute the cost function (mdthe_main_loop)
90        and adjoint runs over individual DIVA intervals (adthe_main_loop)
91        into separate model executions.
92        This enables better tuning of DIVA to given queue sizes.
93      o Loss of cost function value in consecutive DIVA runs is
94        fixed by storing to 'costfinal' file.
95      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
96        beginning/end of adjoint integration is accounted for.
97      The current changes apply to TAF-1.4.26.
98      TAF has one remaining bug, requiring one manual change
99      (see MITgcm manual).
100    o cal: synchronized between MAIN and ecco-branch
101    
102    checkpoint48i_post
103    o Changes to restore differentiability of code w.r.t. previous tag
104      (mostly adding new routines to make list and replacing
105      pressure by totPhiHyd).
106    o Updated and merged grdchk package
107      - has both ADM and TLM checks
108      - works for single- and multi-proc.
109      - output cleaned
110      - worked successfully for parallel DIVA
111    o genmake:
112      - Adding -platform=SP4
113      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
114    o Modif. for DIVA:
115      ctrl_unpack should not be called in intermediate DIVA interval.
116      (similar thing would apply for active files such as
117      tbar, sbar, psbar, which should not be reinitialised;
118      only relevant for ecco-branch)
119    
120    checkpoint48h_post
121    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
122    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
123    o Added SEAICE_initialHEFF to pkg/seaice
124    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
125    
126    checkpoint48g_post
127    --- EOS:
128    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
129      store total Potential in totPhyHyd for diagnostics & EOS.
130    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
131    --- Pressure/geopotential gradient:
132    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
133    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
134      ( changes results of global_ocean_pressure )
135    o NLFS + z-coord.: add eta*Rho' contribution.
136    o accurate phiHyd when using interface-W at the middle between 2 centers
137     ( changes results of ideal_2D_oce )
138    o includes r* 2nd term in potential gradient.
139    
140    checkpoint48f_post
141    Merging from release1_p12:
142    o Modifications for using pkg/exf with pkg/seaice
143      - improved description of the various forcing configurations
144      - added basic radiation bulk formulae to pkg/exf
145      - units/sign fix for evap computation in exf_getffields.F
146      - updated verification/global_with_exf/results/output.txt
147    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
148      (SBO) core products, including oceanic mass, center-of-mass,
149      angular, and bottom pressure (see pkg/sbo/README.sbo).
150    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
151      to avoid negative values in shallow regions.
152      - updated verification/natl_box/results/output.txt
153      - updated verification/lab_sea/results/output.txt
154    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
155    o Added useSingleCpuIO option (see PARAMS.h).
156    o Updated useSingleCpuIO option in mdsio_writefield.F to
157      work with multi-field files, e.g., for single-file pickup.
158    o pkg/seaice:
159      - bug fix in growth.F: QNET for no shortwave case
160      - added HeffFile for specifying initial sea-ice thickness
161      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
162    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
163      kpp_transport_t.F, forward_step.F, and the_main_loop.F
164    o pkg/seaice:
165      - adjoint-friendly modifications
166      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
167    
168    checkpoint48e_post
169    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
170    o dynamics: change definition of computational domain & adapt mom_fluxform
171      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
172    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
173        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
174        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
175        global_ocean.90x40x15 global_with_exf global_ocean_pressure
176        inverted_barometer solid-body.cs-32x32x1
177      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
178    
179    checkpoint48d_post
180    o in preparation for r*:
181     a) use pre-computed gradient of hydrostatic potential:
182        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
183     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
184        => affects results of glob_oce_pressure (different truncation error)  
185      update output.txt of ideal_2D_oce & global_ocean_pressure
186    
187    checkpoint48d_pre
188    o in preparation for r*:
189      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
190      pass the 2 comp. of the grad. as arguments to momentum S/R.
191      but for the moment, only used if it does not change the results.
192    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
193    
194    checkpoint48c_post
195    Modifications in treatment of initial flux forcing controls
196    to avoid extra storing of flux fields.
197    
198    checkpoint48c_pre
199    o Added tidal_basin_2d experiment (currently 1D!)
200    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
201    
202    checkpoint48b_post
203    o r* coordinate added in #ifdef NONLIN_FRSURF block.
204     (modification to pressure gradient not yet implemented)
205    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
206      (for U & V) that are used for vertical advection of momentum.
207    
208    checkpoint48a_post
209    o In preparation for r*, use temp. array to compute vertical transport
210       in flux-form momentum pkg. => change results of few test-exp.
211      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
212                        lab_sea, natl_box & plume_on_slope
213    
214    checkpoint48
215    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
216    
217    checkpoint47j_post
218    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
219    o moved adexch from forward_step to addummy_in_stepping
220    o added exch in ctrl_map_...
221    o aveFreq.=0. at end of cost_final to avoid overwrite in
222      reverse checkpointing loop
223    o Yet more changes in gmredi:
224      * adgmredi_calc_tensor
225        avoiding all recomputation of gmredi_slope_limit
226      * adgmredi_x/y/rtransport
227        added flag for excessive storing to avoid recomp. of
228        u/v/rtans, dTdx/y/z
229        -> this is not really necessary and very memory-consuming
230      * adgmredi_slope_psi:
231        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
232      * gmredi_slope_limit
233        re-activated full calculation of taperfct for case 'ac02'
234    o updating verification/ adjoints of carbon, global_ocean.90x40x15
235    
236    checkpoint47i_post
237    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
238    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
239      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
240    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
241    o gmredi: fix few bugs.
242    
243    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
244    This will be a good checkpoint to plug into the ecco-branch.
245    o few modif.'s to get latest version adjointed
246      (mainly kick out code in ini_linear_phisurf)
247    o modif's to run adjoint with exactConserv
248    o case GM_BOLUS_ADVEC should be cleaned
249      S/R gmredi_slope_psi should be cleaned
250    o verification/carbon now has exactConserv=.TRUE.
251    
252    checkpoint47g_post
253    o time-average AIM output: becomes independent from statvars time-average
254      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
255    o After TAF bug fix:
256      Tested adjoint of gmredi package.
257      Tests were done with checkpoint47 rather than with latest
258      checkpoint47f_post since the latter is broken for the adjoint
259      verification/carbon/ contains both ADM and TLM gradient checks.
260    Here they are, before they get changed/lost/stolen.
261    Mostly modif.'s to fix numerical sensitivities.
262    Gradient checks OK for
263    - GM_taper_scheme:
264      * clipping
265      * ac02
266      * linear
267      * glw91
268      * dm95
269      * ldd97
270    - GMREDI_OPTIONS:
271      * GM_VISBECK_VARIABLE_K
272      * GM_NON_UNITY_DIAGONAL
273      * GM_EXTRA_DIAGONAL
274      * GM_BOLUS_ADVEC
275    in conjunction with data.gmredi parameters to be checked in
276    in a few minutes under verification/carbon/code/
277    
278    checkpoint47f_post
279    Merging from release1_p10:
280    o modifications for using pkg/exf with pkg/seaice
281      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
282        and SEAICE_EXTERNAL_FLUXES
283      - pkg/exf CPP options EXF_READ_EVAP and
284        EXF_NO_BULK_COMPUTATIONS
285      - usage examples are Experiments 8 and 9 in
286        verification/lab_sea/README
287      - verification/lab_sea default experiment now uses
288        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
289    
290    checkpoint47e_post
291    o created a tag prior to creating a branch
292    
293    checkpoint47d_post
294    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
295      at the bottom boundary had an erroneous half slip boundary condition
296    o added bottom drag and no slip boundary condition capabilities to
297      oceanic pressure coordinates code
298    o added new verification experiment global_ocean_pressure, this experiment is
299      also described in the tutorial section of the manual
300    checkpoint47d_pre
301    
302    checkpoint47c_post
303    o Added a verification experiment for a global cubed-sphere ocean run
304      -  verification/global_ocean.cubed32x32x30
305      -  uses pkg/therm_seaice and pkg/bulk_forcing
306    
307    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
308    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
309      when using P-coordinate; only implemented for atmospheric config.
310    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
311      NOTES: requires option NONLIN_FRSURF to be "#define".
312    o update advect_xz/results/output.txt (left from checkpoint44g_post)
313    
314    checkpoint47b_post
315    Merging from release1_p9:
316    o pkg/seaice
317      - removed GOTO's and added taf directives
318      - double precision constants to reduce the g77 (Linux)
319        to F77 (SGI) differences reported in release1_p8
320    o tools/genmake
321      - added SGI options
322    o verification/testscript
323      - updated to that of checkpoint47a_post
324    o verification/global_ocean.90x40x15/input/eedata
325      - modified for SGI f77 compatibility
326    o verification/lab_sea
327      - added description of sea-ice model
328      - added missing matlab routines
329      - added test of thermodynamics parallelization
330    
331    checkpoint47a_post
332    o new pkg: aim_v23
333     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
334       for now, keep the same surface forcing as before.
335     - Part-Cell implemented into AIM; check that Heat & Water are conserved
336     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
337     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
338    o add diagnostic of surface correction term in monitor output
339    
340    o bulk_force and therm_seaice
341    - Two packages:  bulk_force (Bulk forcing)
342      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
343    - Earlier integration from Stephaine Dutkiewicz
344      and Patrick Heimbach.
345    - Two ifdef statements for compile time,
346       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
347    
348    checkpoint47
349    differentiable version of checkpoint46n_post
350    o bug fix in quasihydrostaticterms
351    o * "clean" adjoint code (in terms of extensive recomputations)
352        can now be obtained for all GMREDI options (i.e. for
353        - GM_VISBECK_VARIABLE_K
354        - GM_NON_UNITY_DIAGONAL
355        - GM_EXTRA_DIAGONAL
356        - GM_BOLUS_ADVEC )
357      * However, wrong gradient check problem remains unsolved.
358      * New CPP options have been introduced for different
359        tapering schemes
360    o external_fields_load now part of differentiation list
361    o pressure needs multiple storing;
362      would be nice to have store_pressure at beginning or
363      end of forward_step, e.g. by having phiHyd global (5-dim.)
364      (NB: pressure is needed for certain cases in find_rho,
365      which is also invoked through convective_adjustment).
366    o recomputations in find_rho for cases
367     'JMD95'/'UNESCO' or 'MDJWF' are OK.
368    o #define ATMOSPHERIC_LOADING should be differentiable
369    o ini_forcing shifted to begining of initialise_varia
370    o Incorporating QNVS line search routines into MITgcm
371      (this is separate code, and therefore not under pkg)
372      lsopt/, optim/
373    o Updated verification/carbon/
374      - #define GM_VISBECK_VARIABLE_K
375      - GM_taper_scheme    = 'ldd97'    
376    
377    checkpoint46n_post
378    Merging from release1_p8:
379    o verification/natl_box:
380      updating new external_fields_load routine
381    o New package: pkg/seaice
382      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
383      The sea-ice code is based on Hibler (1979-1980).
384      Two sea-ice dynamic solvers, ADI and LSR, are included.
385      In addition to computing prognostic sea-ice variables and diagnosing
386      the forcing/external data fields that drive the ocean model,
387      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
388      The implied surface heat flux is then stored in variable
389      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
390      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
391      non-local transport term.  Because this call precedes model
392      thermodynamics, temperature under sea-ice may not be "exactly" at
393      the freezing point by the time theta is dumped or time-averaged.
394      N.B.: fairly large differences in accuracy occur across
395            different platforms/compilers; comparison between
396            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
397            generated output gives:
398       T           S           U           V
399      C D M    c        m  s        m  s        m  s        m  s
400      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
401      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
402      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
403    
404      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
405    o GAD:
406      - generated new common blocks to account for call of
407        same gad routines with differing traceridentities
408        (needed to modify tracerIdentity indices in GAD.h)
409      - generated separate common blocks for case useCubedSphereExchange
410        (Department of Futurology)
411      - parameter lists to gmredi_?transport: added tracerIdentity
412      - added new key indices to tamc.h
413    o external_fields_load:
414      - added this routine to TAF list
415      - needed to make some common blocks global and additional storing
416        along the same lines as exf package (checkpoint_lev?_directives.h)
417    o exf:
418      updated external forcing package
419      - bug fixes carried over from ecco-branch
420        (missing OBCS_OPTIONS.h in two routines)
421      - enable easy to use "no forcing".
422      - added exf I/O for atmospheric loading
423      - added exf I/O for runoff data
424      - transfered scaling between exf <-> MITgcm to exf namelist
425    o Adding new verification experiment global_with_exf.
426      This verification experiment is almost identical to the
427      global_ocean.90x40x15 experiment, except that it uses
428      the exf (and cal) package instead of the
429      external_fields_load routine (cf README file).
430    
431    checkpoint46m_post
432    o modified testscript to return -- when there are no lines of "%MON" output
433    o added new flag "quasiHydrostatic" for QH mode
434      and new routine quasihydrostaticterms()
435    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
436      New routine: mom_u_coriolis_nh()
437    o fixed sign of non-hydrostatic metric terms in u and v equations.
438      Depend on correct sign of gravitySign.
439    o added work.pc* to .cvsignore in aim directories using ifc
440    o introduced flag for controllin non-hydrostatic metric terms
441    o removed gravitySign from PARM04
442    o switched to g77/ifc from pgf77 in aim experiments
443    
444    checkpoint46l_post
445    o made convective adjustment work with pressure coordinates:
446     - changed the direction of k-loop in convective_adjustment.F for the
447       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
448     - adjusted the reference pressure k-index in convective_adjustment.F
449     - adjusted the convection condition in convect.F (in analogy to
450       calc_ivdc.F)
451     - convective_adjustment no longer computes anything on the halos
452     - removed the warnings about negative salinity from find_rho.F and
453       find_alpha.F; instead the new routine look_for_neg_salinity, called
454       at the beginning of find_rho, find_alpha, and find_beta, does a
455       check of the entire slice, if CPP-option
456       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
457    checkpoint46l_pre
458    
459    checkpoint46k_post
460    o fixed the verification/global_ocean.90x40x15 experiment:
461     - new bathymetry (the world according to A., JMC, and M.)
462     - new initial fields and forcing fields (*.bin files)
463     - new POLY3.COEFFS (for the next release one should switch to a full
464       equation of state: JMD95P or MDJWF)
465     - fixed several errors and redundancies in the data file
466     - experiment uses looped cells
467     - added matlab directory with diagnostic scripts for plotting of output
468    
469    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
470     - read AIM physics parameters from a file (data.aimphys)
471     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
472    
473    checkpoint46j_post
474    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
475    o move wVel computation at the end of the time step, in S/R integr_continuity
476    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
477    o update timeave pkg for wVel diagnostic.
478    checkpoint46j_pre
479    
480    checkpoint46i_post
481    o Clean up AIM package (and keep the results unchanged):
482      include CPP_OPTION and use IMPLICT NONE in all routines ;
483      declare all the variables _RL ; use _d 0 for all numerical constants.
484      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
485    
486    checkpoint46h_post
487    o cleaned up the use of rhoNil and rhoConst.
488      - rhoNil should only appear in the LINEAR equation of state, everywhere
489        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
490        and the dynamical equations are all divided by rhoConst
491    o introduced new parameter rhoConstFresh, a reference density of fresh
492      water, to remove the fresh water flux's dependence on rhoNil. The default
493      value is 999.8 kg/m^3
494    o cleanup up external_forcing.F and external_forcing_surf.F
495      - can now be used by both OCEANIC and OCEANICP
496    checkpoint46h_pre
497    
498     Added code to convert surface volume flux (fresh water) into
499     a mass flux when using P coordinates in the ocean (OCEANICP).
500     Note: It assumes you have set rho0=rhoConst=density of fresh water.
501    
502    checkpoint46g_post
503    o Include a new diagnostic variable phiHydLow for the ocean model
504      - in z-coordinates, it is the bottom pressure anomaly
505      - in p-coordinates, it is the sea surface elevation
506      - in both cases, these variable have global drift, reflecting the mass
507        drift in z-coordinates and the volume drift in p-coordinates
508      - included time averaging for phiHydLow, be aware of the drift!
509    o depth-dependent computation of Bo_surf for pressure coordinates
510      in the ocean (buoyancyRelation='OCEANICP')
511      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
512        Theta, Salinity, and Pressure in the parameter list. This routine is
513        presently contained in find_rho.F. This routine does not give the
514        correct density for 'POLY3', which would be a z-dependent reference
515        density.
516    o cleaned up find_rho
517      - removed obsolete 'eqn' from the parameter list.
518    o added two new verification experiments: gop and goz
519      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
520    checkpoint46g_pre
521    
522    checkpoint46f_post
523    o Enable tangent linear (forward mode) gradient checks:
524      - extended active file handling to g_... files
525      - added TANGENT_SIMULATION to theSimulationMode
526      - extended grdchk package accordingly
527    o added tangent linear setup in verification/carbon/code_ftl
528    o added adjoint setup in verification/front_relax/code_ad
529    
530    checkpoint46e_post
531    o Added new equation of state -> MDJWF
532      - EOS of McDougall et al., 2002, JAOT, submitted
533      - caveat: the equation of state is only valid for a smaller (more
534        realistic?) range of values than JMD95P/Z and UNESCO
535      - added masks to the calculation of pressure in store_pressure
536      - added more check values for density in check_eos (ini_eos.F), some of
537        the old check values are out of the range of the MDJWF-eos, so don't
538        expect perfect matches for those
539    checkpoint46e_pre
540    
541    checkpoint46d_post
542    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
543      'OCEANICP', also initialised field pressure correctly in ini_eos in the
544      case of pressure coordinates. eosType='JMD95Z' in
545      combination with buoyancyRelation='OCEANICP' now causes an error.
546    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
547      in find_alpha/beta.
548    checkpoint46d_pre
549    
550    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
551      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
552    
553    checkpoint46c_post
554    o Changes necessary for ocean in p-coordinates
555     -  Added new buoyancy relation = 'OCEANICP'
556     -  Added new parameters = gravitySign (this used to be contained inside
557        the factor dRdZ which I added when we first switched to R coordinates).
558     X GM/Redi is not compatible (yet)
559     X bottom drag and no-slip need to be debugged.
560    checkpoint46c_pre
561    
562    checkpoint46b_post
563    o Added new equation of state -> JMD95Z and JMD95P
564      - EOS of Jackett and McDougall, 1995, JAOT
565      - moved all EOS parameters into EOS.h
566      - new routines ini_eos.F, store_pressure.F
567    o Added UNESCO EOS, but not recommended because it requires
568      in-situ temperature (see JMD95)
569    o Modified formatting for knudsen2.f in utils/knudsen2 and added
570      unesco.f to be used with POLY3
571    checkpoint46b_pre
572    
573    checkpoint46a_post
574    o Added (atmospheric) pressure loading
575      - new field in FFIELDS.h, etc...
576      - new cpp flag ATMOSPHERIC_LOADING
577    o Changed hFacC to _hFacC in calc_phi_hyd.F
578    o Added SHORTWAVE_HEATING to some files for consistency
579    checkpoint46a_pre
580    
581    checkpoint46
582    further merges from release1_p5
583    o new ctrl package
584      - adopted from ECCO environment to enable optimization
585      - added Eliassen Palm fluxes to controls
586    o added Eliassen Palm flux controls to gradient check package
587    o cost package
588      - Compatible with new ctrl package
589      - added Eliassen Palm cost hooks
590      - modif's of existing cost functions
591    o Adjoint-related bug fixes in kpp:
592      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
593      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
594    o autodiff package
595      - flow directives:
596        + new for S/R do_the_model_io
597        + enhanced for S/R checkpoint
598        + new gmredi.flow
599      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
600        disable adcommon.h/g_common.h by default.
601      - fixed problem for adjoint of global_max
602    o modified verification/carbon/
603    o New setup for adjoint of global_ocean
604    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
605    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
606    o incorporated hooks for sponge layer code (external_forcing.F)
607    
608    checkpoint45d_post
609    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
610    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
611      (affects plume_on_slope "cg2d" output)
612    o add new parameter deltaTfreesurf for free-surface time stepping
613    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
614    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
615    o change phiMin in exp1 (to agree with documentation)
616    o add new flags:
617     - T,S forcing inside/outside Adams-Bashforth
618     - turn off temp,salt advection and/or forcing
619     - for each tracer, define internal flag for multiDimAdvection & A-B
620    o monitor: change definition of KE to check conservation of Energy
621    
622    checkpoint45c_post
623    o Removed f90 comments ("!")
624    o Modified initialisations to enable exf package for MITgcm
625      (without invoking ECCO_PACKAGE).
626    o modifications to gradient check package (Martin Losch)
627      - enable centered differences
628      - modified format of standard output
629    
630    checkpoint45b_post
631    o cleaned exchange calls in cg2d
632    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
633    o included CPP option SINGLE_LAYER_MODE in thermodynamics
634      to configure barotropic setup (Martin Losch)
635    o moved some initialisations within bi,bj loop in dynamics
636      (TAF flow dependency)
637    o in initialise_varia, moved call packages_init_variables
638      before convective_adjustment_init
639      (corresponding adjustment of TAF tape initialisation).
640    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
641    
642    checkpoint45a_post
643    o compute Rho over the whole domain (extend iMin,jMin indices)
644    o specific exchange for X-slice domain (case Ny=1)
645    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
646    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
647    
648    checkpoint44h_post = checkpoint45
649    o Fix to restore differentiability:
650      place at which packages_init_variables is called in
651      initialise_varia is crucial for reverse control flow.
652    o modifications in GMRedi to enable stable adjoint
653      (corresponding modif's in thermodynamics, dynamics)
654    o added missing hook for sponge layer code in external_forcing
655    o modified test cost functions
656    o storing in gad_advection (plus removal of write(0,*)!
657    o missing headers TR1.h added in convective_adjustment routines
658    o errorMessageUnit set non-equal zero in eeboot
659      (conflict on some platforms, e.g. IBM SP3)
660    o modified carbon verif.
661    
662    checkpoint44h_pre
663    o vertical grid option: allow to put the Interface at the middle between
664      2 cell-centers ; replace delZ in pkg/kpp by drF.
665    o GM Advective form: Tracers are advected using the residual transport (=
666      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
667    
668    checkpoint44g_post
669    o fix surface correction term in multiDimAdvection (affects plume_on_slope
670      results) ; ifdef missing in thermodynamics.F
671    
672    checkpoint44f_pre,checkpoint44f_post
673    o added PTRACERS package
674      This allows an arbitrary number of passive tracers to be integrated
675      forward simultaneously with the dynamicaly model.
676      + Implemented so far:
677        - basic forward algorithm (time-stepping, advection, diffusion, convection)
678        - I/O and checkpointing
679        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
680      + Not implemented so far:
681        - KPP
682        - OBCS
683      + No specific example supplied (yet) but global_ocean.90x40x15 has the
684        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
685        line in data.pkg.
686      + This package is disabled by default since it increases storage.
687    
688    
689    o testscript: added -cleanup option
690    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
691                 b) enable to filter 2D fields.
692    
693    checkpoint44e_pre,post
694    o re-wrote convective adjustment to use pre-calculated weights
695      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
696      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
697      Original calls to convect() still in place.
698    
699    chkpt44d_pre,post
700    o added missing EXCLUDE_MONITOR flags
701    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
702      (incompatible typ in MIN/MAX expressions caused problems
703      on IBM SP3)
704    o in genmake added variable MAKEDEPEND
705      plus resetting for case SunOS
706    o added timer_stats.c routine for IBM SP3
707    o removed variables in dynamics
708    !!! I forgot to create tag chkpt44d_pre !!!
709    !!! But chkpt44d_pre = chkpt44c_post    !!!
710    
711    o real fresh water flux implemented with non-linear free-surface.
712    
713    chkpt44c_pre,post
714    o few fix (mask in shap_s2, EmPmR in external_field_load,
715      USE_NATURAL_BCS in solve_for_P);
716    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
717    
718    checkpoint44b_pre/_post
719    o merge of relevant stuff from the ecco-branch:
720      - genmake: removed $S64 overwrite for case SunOS
721      - pkg/exf: update and corrections for field swapping and obcs
722      - pkg/ecco: parameter lists for the_model_main, the_main_loop
723                  harmonized between ECCO and MITgcm
724      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
725                      updated checkpointing_lev... lists for obcs
726      - model/src: minor changes in forward_step, plot_field
727                   added directive for divided adjoint in the_main_loop
728      - pkg/mdsio: added mdsio_gl_slice
729    
730    o check parameters & config (chkpt44a_pre,post)
731    o OBC and NonLin_FrSurf.
732    
733    checkpoint44
734    o fix bug in mom_vi_del2uv
735    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
736    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
737    o update AIM experiments (NCEP input files)
738    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
739    o added some stuff for AD
740    
741    checkpoint43
742    o added two new advection tests
743    o added global 4x4 degree ocean test
744    o added test of H&S94 with free surface on cube
745    o some final mods for gradient check, adjoint,...
746    
747    checkpoint42
748      Fixed AD-related problems:
749    o Store directives up-to-date with re-arranged Adams-Bashforth
750      (mainly thermodynamics.F)
751    o New store directives for multi-dim. advection schemes
752      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
753      * new common block and key passkey
754      (mainly gad_advection.F)
755    o Modified store directives for split of dynamics/thermodynamics
756      for the case ALLOW_KPP
757    o Cleaned argument list for timestep_tracer.F
758    
759    checkpoint41
760    o re-formatted/added comments in prologues of key subroutines
761      to work with protex
762    
763    checkpoint40
764    o moved calc_gs, calc_gt and calc_tr1 back to model/src
765    o added FLT (floats) package from Arne along with demo. experiment
766    o re-arranged Adams-Bashforth scheme for tracers to allow easier
767      implementation of forward-in-time forcing terms
768    o more mods for non-linear free-surface including new variable
769    o modified multi-dim method to work on cube
770    o bug fix in KPP (from DM)
771    
772    checkpoint40pre9
773    o added DST advection schemes
774    o fix MPI bug on SGI's
775    o modifications for non-linear free-surface
776    o fixed conditionals for fixed flow/passive tracer only mode
777    o added tension/strain form of stress tensor
778    o changes to commenting of arguments for TAF/TAMC
779    o added/updated many matlab scripts
780    o added multi-dimensional advection method for tracers
781      
782    checkpoint40pre8
783    o new package rw/
784      Added method for dumping intermediate local arrays:
785      mdsio_writetile - same as mdsio_writefield except works from inside
786                        bi,bj loop
787      mdsio_writelocal - same as mdsio_writetile except works for local
788                         arrays
789      write_local_r? - higher-level wrapper for mdsio_writelocal
790      Controlled by diagFreq. Defaults to zero (ie. no dumps)
791      Example given at end of mom_vecinv.F that dumps some local arrays.
792    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
793      control flux-form versus vector invariant code.
794      Switch is runtime flag vectorInvariantMomentum (defaults to false)
795      or genmake -DISABLE ...
796    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
797      (additional storing is now needed for case vecinv;
798      currently nothing implemented to switch this storing off
799      in case fluxform is used since no CPP flag available).
800    
801    checkpoint40pre7
802    o bug fix in dynamics.F
803      calc_viscosity called before k=1,Nr loop.
804    o added some #ifdef's ALLOW_PASSIVE_TRACER
805    o cleaned initialisations in ctrl_map_ini
806      related to TAF
807    
808    checkpoint40pre6
809    o split dynamics into thermodynamics & dynamics
810    o corresponding split of calc_diffusivity into
811      calc_diffusivity, calc_viscosity
812      (kpp_calc_diff, kpp_calc_visc).
813    o Added diffkr, kapgm to control variables
814    o bug fix in gmredi_slope_limit for ldd97
815    
816    checkpoint40pre5
817    o proper initialization of Adams-Bashforth time stepping
818      + uses forward step for very first step of model (iter=0)
819    o re-generated *all* output since almost all output is modified by this
820      change (sorry but we've been putting this one off for about 2 years)
821      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
822        *not* regenerated since they are already out of date and I don't
823        want to create the impression that they are suddenly working.
824    o removed KAP stuff for DEC's
825    o modified/added many .cvsignore files in */code and */input
826    o added new expt "solid-body.cs-32x32x1"
827      + this uses an alternative form of ini_curvilinear_grid.F which
828        is not necessarily any better than the current one...
829    
830    checkpoint40pre4
831    o added re-initialisations of utrans,vtrans,rtrans in
832      calc_common_factors which are crucial for TAF.
833    o extended iMin,jMin range for calc_common_factors,
834      calc_diffusivity
835    o added option ALLOW_PASSIVE_TRACER
836    o a few minor updates and fixes
837    
838    checkpoint40pre3
839    o created calc_gtr1.F for gad package
840    o split the_main_loop and re-introduced forward_step
841    o some recomputations of nIter0 for TAMC
842    
843    checkpoint40pre2
844    o Updated to latest branch of AJA, JMC
845    o Added gradient check package
846    o Added routines for passive tracer handling
847    o Added carbon sequestration sensitivity experiment
848    
849    checkpoint39
850     o Modifications and fixes to support TAMC
851       (mainly missing or wrong directives)
852     o Corrected common blocks when fooling TAMC to produce adjoint I/O
853       in addummy_in_stepping
854     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
855     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
856     o Included following packages:
857       cal: calendar
858       exf: external forcing
859       ecco: essential routines to control use of cal, exf
860             (NB: this is not the full ECCO environment)
861     o disabled some packages by default in genmake
862    
863    checkpoint38
864     o see notes_c37_adj.txt
865     o corrected wrong layer index in external_forcing_t
866     o replaced the_main_loop/forward_step by the_main_loop
867     o removed forceoutput from write_state
868       (replaced criteria for initial/final state)
869     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
870    
871    checkpoint37
872     o mdsio.F routine split and packaged in pkg/mdsio
873       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
874        used unless genmake -disable=mdsio)
875     o allow a more precise surface-geopotential gradient for the atmosphere
876       taking into account the change in space of Alpha (=1/rho) at the surface.
877     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
878       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
879     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
880       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
881       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
882     o Time-Average diagnostics defined as a pseudo package "timeave".
883     o pickup files : old pickup (before c35) did not work with new code (c35
884       and after) unless activating 2 commented lines in initialise-varia.
885     o Non-Hydrostatic pickup file Pb fixed.
886     o bug with Rigid-lid version (since c35) fixed.  
887    
888    checkpoint36
889     o implement Crank-Nickelson barotropic time-stepping
890     o recover Time-Average diagnostics
891     o fix Pb in checkpoint (PR#19)
892     o AIM become a standard package ; clean unused CPP_kees
893    
894    checkpoint35
895     o subtantial rewrite of dynamics.f
896     o allows staggered time-stepping
897     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
898     o added bottom drag (linear + quadratic)
899    
900    checkpoint34
901     o Modified exchange routines for correct reverse simulation.
902     o Added verification output to comply with bug fix in impldiff.F
903       as of c33 (exp2, natl_box).
904     o Corrected store directives in dynamics.F
905     o Corrected array boundaries in impldiff.F
906     o Corrected array dimensions in gmredi.
907       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
908     o Added routine GLOBAL_SUM_INT to global_sum.F
909     o Added mdsio_gl.F for ECCO purposes.
910    
911    checkpoint33
912     o Fixed bug in lower BC in impldiff.F
913     o Fixed confusion about units of forcing arrays in FFIELDS.h
914       namely Fu,Fv,Qnet,Qsw,EmPmR:
915       - Removed verification/natl_box/code/external_fields_scale.F
916         (did not differ from that in model/src)
917       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
918         (see FFIELDS.h for description)
919       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
920         kpp_calc.F and kpp_transport_t.F
921       - Removed model/src/external_fields_scale.F and calls to it
922       - verification/natl_box uses flux data with "atmospheric" sign so
923         a special version of external_fields_load.F is used to
924         change the data as it's read in. This way, the arrays
925         have the right units and signs at all times tha a user could
926         possibly use them.
927     o Corrected genmake to delete a temporary file during configuration
928    
929    checkpoint32
930     o Scaling of forcing fields moved from external_forcing.F to
931       external_fields_scale.F, called directly after loading fields.
932     o Surface relaxation terms added to surface tendency fields in
933       extra subroutine.
934     o impldiff.F changed to avoid storing by TAMC of huge intermediate
935       fields.
936     o Changes in GMRedi to comply with packaging structure.
937     o Modifications and bug fixes in KPP package.
938     o Verification experiment for KPP added (verification/nat_box/)
939    
940    checkpoint31
941     o Packages interface brought in line with defined standard
942       -> new routines packages_...F
943       -> changes in initialise_fixed.F, initialise_varia.F
944       -> enables initialisation interface for ECCO package
945     o Rescaling of external forcing fields immediately after read
946       (removed from external_forcing.F)
947       -> new: surface_fields_scale.F
948       -> affects ini_foorcing.F, external_fields_load.F
949     o Computation of surface tendencies before tendency updates.
950       -> new: external_forcing_surf.F
951     o Change of variable names useGMRedi, useKPP, useECCO
952     o Further changes in dynamics.F, impldiff.F for TAMC
953     o Tested for experiments 0, 2, 4.
954       - not yet tested for GMRedi.
955       - not yet tested for KPP.
956    
957    checkpoint30
958     o Updates for OBCs
959     o New experiment for test OBCs (internal_wave)
960     o New output.txt in verification/exp4/results/
961     o Updates for KPP: calculation of viscosity corrected, new variables
962       kpp_dumpFreq and kpp_taveFreq
963     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
964       and entry for T90 in genmake
965    
966    checkpoint29
967     o packaged KPP and GM/Redi
968    
969    checkpoint28
970     o Corrected initialization of hFacMin for difference vertical coordinates
971     o Modified calculation of partial cell thickness to more robust algorithm
972     o config_summary.F: replaced write_1D_... by write_0D_...
973       read_write.F: added subroutines write_0D_...
974     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
975       included some initialisations required for TAMC.
976     o routine calc_isoslopes: modified sqrt computation to make it
977       differentiable for zero argument.
978     o routines dynamics, impldiff:
979       included store directives and tape key computations required for TAMC.
980     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
981    
982    checkpoint27
983     o fixed calc_isoslopes() to so that cancellation of terms in tensor
984       formulation works properly with variable resolution.
985     o restructured the calling tree between the_model_main() and dynamics()
986     o split initialise() into initialise_fixed() and initialise_varia()
987     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
988       in new routine ini_psurf()
989    
990  checkpoint26  checkpoint26
991   o moved some #ifdef in optional routines to encompass everything   o moved some #ifdef in optional routines to encompass everything

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