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revision 1.29 by adcroft, Thu Jul 13 14:22:58 2000 UTC revision 1.154 by mlosch, Tue May 13 13:32:52 2003 UTC
# Line 2  $Header$ Line 2  $Header$
2    
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    checkpint50d_post
6    o change kpp output from multiple-record state files to single-record state
7      files analogous to write_state.F
8    o reduce the output frequency of cg3d-related stuff to the monitor frequency,
9      analogous to the cg2d-related output.
10    o fix small problem with in ptracers_write_checkpoint.F: len(suff)=512, so that
11      writing to internal file fn (with length 512) fails.
12    checkpoint50d_pre
13    
14    checkpoint50c_post
15    o fix problem in ini_procs.F when using MPI (was there since checkpoint48f)
16    o add monitor diagnostic of vorticity (mon_vort3.F) and potential energy.
17    o add time-average diagnostic of U*V and vertical diffusive flux for theta.
18    o bug fixed in convective adjustment diagnostic (multi-tile set-up).
19    o 4th Order Adv scheme: return to previous (c40pre7) masking near boundaries.
20    
21    checkpoint50c_pre
22    Merging from release1_p13:
23    o bug fix for pkg/seaice dynamic solver
24    o Added SEAICE_initialHEFF to pkg/seaice
25    
26    checkpoint50b_post
27    o store u*,v* in gU,V instead of in guNm1,gvNm1
28    o in order to put the momForcing out of the Adams-Bashforth:
29      move forcing & CD-scheme calls from mom_fluxform & mom_vecinv
30      to timestep.F
31    o new flag "useCDscheme" (default=F); replace guCD,gvCD by local arrays
32    o re-generate output for highly sensitive test-exp:
33       global_ocean_pressure, ideal_2D_oce, lab_sea, natl_box
34    
35    checkpoint50b_pre
36    o restore the use of momAdvection & useCoriolis flags (mom_vecinv)
37    o corrected CPP option mismatch in exf_Bulk... functions for case
38      #define ALLOW_ATM_WIND && #undef ALLOW_ATM_TEMP
39    
40    checkpoint50a_post
41    o Bug fix for merging between c50 and KPP.
42      ikey was passed from thermodynamics to kpp_calc via
43      common block rather than being recomputed in kpp_calc,
44      in contradiction with new key itdkey.
45      New key ikppkey created, and tamc.h headers updated.
46    
47    checkpoint50
48    - 2nd step of merge with ecco-branch:
49      merge changes in ecco-branch back into main trunk
50    - bug fix in find_alpha
51    - more storing in gmredi_calc_tensor.F, kpp_routines.F
52    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
53    - merged some sliced AD support routines
54    
55    checkpoint49
56    merged from ecco-branch:
57    o exf:
58      - Enable initialisation of forcing fields to constant
59        (runtime) values.
60      - in exf_getffields.F
61        Reduce i-/j-loop to interior domain, discarding overlaps.
62        That also fixes wrong TAF-key computations for key_1, key_2
63        with bulf formulae.
64      - exf_init.F modify #ifdef for exf_init_evap
65      - exf_getffieldrec.F, ctrl_getrec.F
66        The following INT-usages are not safe:
67          fldsecs  = int(fldsecs/fldperiod)*fldperiod
68          fldcount = int(fldsecs/fldperiod) + 1
69        and were modified.
70    o autodiff: checkpoint_lev...
71      - updated storing for bulk formulae (some arrays were missing)
72      - added state for seaice package
73      - synchronized with main branch
74    o DIVA:
75      Modif.s in
76      - the_main_loop.F
77      - the_model_main.F
78      and added cost_final_restore.F cost_final_store.F
79      o With these changes, it is possible to fully separate
80        the first forward run to compute the cost function (mdthe_main_loop)
81        and adjoint runs over individual DIVA intervals (adthe_main_loop)
82        into separate model executions.
83        This enables better tuning of DIVA to given queue sizes.
84      o Loss of cost function value in consecutive DIVA runs is
85        fixed by storing to 'costfinal' file.
86      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
87        beginning/end of adjoint integration is accounted for.
88      The current changes apply to TAF-1.4.26.
89      TAF has one remaining bug, requiring one manual change
90      (see MITgcm manual).
91    o cal: synchronized between MAIN and ecco-branch
92    
93    checkpoint48i_post
94    o Changes to restore differentiability of code w.r.t. previous tag
95      (mostly adding new routines to make list and replacing
96      pressure by totPhiHyd).
97    o Updated and merged grdchk package
98      - has both ADM and TLM checks
99      - works for single- and multi-proc.
100      - output cleaned
101      - worked successfully for parallel DIVA
102    o genmake:
103      - Adding -platform=SP4
104      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
105    o Modif. for DIVA:
106      ctrl_unpack should not be called in intermediate DIVA interval.
107      (similar thing would apply for active files such as
108      tbar, sbar, psbar, which should not be reinitialised;
109      only relevant for ecco-branch)
110    
111    checkpoint48h_post
112    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
113    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
114    o Added SEAICE_initialHEFF to pkg/seaice
115    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
116    
117    checkpoint48g_post
118    --- EOS:
119    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
120      store total Potential in totPhyHyd for diagnostics & EOS.
121    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
122    --- Pressure/geopotential gradient:
123    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
124    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
125      ( changes results of global_ocean_pressure )
126    o NLFS + z-coord.: add eta*Rho' contribution.
127    o accurate phiHyd when using interface-W at the middle between 2 centers
128     ( changes results of ideal_2D_oce )
129    o includes r* 2nd term in potential gradient.
130    
131    checkpoint48f_post
132    Merging from release1_p12:
133    o Modifications for using pkg/exf with pkg/seaice
134      - improved description of the various forcing configurations
135      - added basic radiation bulk formulae to pkg/exf
136      - units/sign fix for evap computation in exf_getffields.F
137      - updated verification/global_with_exf/results/output.txt
138    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
139      (SBO) core products, including oceanic mass, center-of-mass,
140      angular, and bottom pressure (see pkg/sbo/README.sbo).
141    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
142      to avoid negative values in shallow regions.
143      - updated verification/natl_box/results/output.txt
144      - updated verification/lab_sea/results/output.txt
145    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
146    o Added useSingleCpuIO option (see PARAMS.h).
147    o Updated useSingleCpuIO option in mdsio_writefield.F to
148      work with multi-field files, e.g., for single-file pickup.
149    o pkg/seaice:
150      - bug fix in growth.F: QNET for no shortwave case
151      - added HeffFile for specifying initial sea-ice thickness
152      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
153    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
154      kpp_transport_t.F, forward_step.F, and the_main_loop.F
155    o pkg/seaice:
156      - adjoint-friendly modifications
157      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
158    
159    checkpoint48e_post
160    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
161    o dynamics: change definition of computational domain & adapt mom_fluxform
162      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
163    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
164        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
165        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
166        global_ocean.90x40x15 global_with_exf global_ocean_pressure
167        inverted_barometer solid-body.cs-32x32x1
168      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
169    
170    checkpoint48d_post
171    o in preparation for r*:
172     a) use pre-computed gradient of hydrostatic potential:
173        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
174     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
175        => affects results of glob_oce_pressure (different truncation error)  
176      update output.txt of ideal_2D_oce & global_ocean_pressure
177    
178    checkpoint48d_pre
179    o in preparation for r*:
180      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
181      pass the 2 comp. of the grad. as arguments to momentum S/R.
182      but for the moment, only used if it does not change the results.
183    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
184    
185    checkpoint48c_post
186    Modifications in treatment of initial flux forcing controls
187    to avoid extra storing of flux fields.
188    
189    checkpoint48c_pre
190    o Added tidal_basin_2d experiment (currently 1D!)
191    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
192    
193    checkpoint48b_post
194    o r* coordinate added in #ifdef NONLIN_FRSURF block.
195     (modification to pressure gradient not yet implemented)
196    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
197      (for U & V) that are used for vertical advection of momentum.
198    
199    checkpoint48a_post
200    o In preparation for r*, use temp. array to compute vertical transport
201       in flux-form momentum pkg. => change results of few test-exp.
202      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
203                        lab_sea, natl_box & plume_on_slope
204    
205    checkpoint48
206    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
207    
208    checkpoint47j_post
209    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
210    o moved adexch from forward_step to addummy_in_stepping
211    o added exch in ctrl_map_...
212    o aveFreq.=0. at end of cost_final to avoid overwrite in
213      reverse checkpointing loop
214    o Yet more changes in gmredi:
215      * adgmredi_calc_tensor
216        avoiding all recomputation of gmredi_slope_limit
217      * adgmredi_x/y/rtransport
218        added flag for excessive storing to avoid recomp. of
219        u/v/rtans, dTdx/y/z
220        -> this is not really necessary and very memory-consuming
221      * adgmredi_slope_psi:
222        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
223      * gmredi_slope_limit
224        re-activated full calculation of taperfct for case 'ac02'
225    o updating verification/ adjoints of carbon, global_ocean.90x40x15
226    
227    checkpoint47i_post
228    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
229    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
230      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
231    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
232    o gmredi: fix few bugs.
233    
234    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
235    This will be a good checkpoint to plug into the ecco-branch.
236    o few modif.'s to get latest version adjointed
237      (mainly kick out code in ini_linear_phisurf)
238    o modif's to run adjoint with exactConserv
239    o case GM_BOLUS_ADVEC should be cleaned
240      S/R gmredi_slope_psi should be cleaned
241    o verification/carbon now has exactConserv=.TRUE.
242    
243    checkpoint47g_post
244    o time-average AIM output: becomes independent from statvars time-average
245      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
246    o After TAF bug fix:
247      Tested adjoint of gmredi package.
248      Tests were done with checkpoint47 rather than with latest
249      checkpoint47f_post since the latter is broken for the adjoint
250      verification/carbon/ contains both ADM and TLM gradient checks.
251    Here they are, before they get changed/lost/stolen.
252    Mostly modif.'s to fix numerical sensitivities.
253    Gradient checks OK for
254    - GM_taper_scheme:
255      * clipping
256      * ac02
257      * linear
258      * glw91
259      * dm95
260      * ldd97
261    - GMREDI_OPTIONS:
262      * GM_VISBECK_VARIABLE_K
263      * GM_NON_UNITY_DIAGONAL
264      * GM_EXTRA_DIAGONAL
265      * GM_BOLUS_ADVEC
266    in conjunction with data.gmredi parameters to be checked in
267    in a few minutes under verification/carbon/code/
268    
269    checkpoint47f_post
270    Merging from release1_p10:
271    o modifications for using pkg/exf with pkg/seaice
272      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
273        and SEAICE_EXTERNAL_FLUXES
274      - pkg/exf CPP options EXF_READ_EVAP and
275        EXF_NO_BULK_COMPUTATIONS
276      - usage examples are Experiments 8 and 9 in
277        verification/lab_sea/README
278      - verification/lab_sea default experiment now uses
279        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
280    
281    checkpoint47e_post
282    o created a tag prior to creating a branch
283    
284    checkpoint47d_post
285    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
286      at the bottom boundary had an erroneous half slip boundary condition
287    o added bottom drag and no slip boundary condition capabilities to
288      oceanic pressure coordinates code
289    o added new verification experiment global_ocean_pressure, this experiment is
290      also described in the tutorial section of the manual
291    checkpoint47d_pre
292    
293    checkpoint47c_post
294    o Added a verification experiment for a global cubed-sphere ocean run
295      -  verification/global_ocean.cubed32x32x30
296      -  uses pkg/therm_seaice and pkg/bulk_forcing
297    
298    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
299    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
300      when using P-coordinate; only implemented for atmospheric config.
301    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
302      NOTES: requires option NONLIN_FRSURF to be "#define".
303    o update advect_xz/results/output.txt (left from checkpoint44g_post)
304    
305    checkpoint47b_post
306    Merging from release1_p9:
307    o pkg/seaice
308      - removed GOTO's and added taf directives
309      - double precision constants to reduce the g77 (Linux)
310        to F77 (SGI) differences reported in release1_p8
311    o tools/genmake
312      - added SGI options
313    o verification/testscript
314      - updated to that of checkpoint47a_post
315    o verification/global_ocean.90x40x15/input/eedata
316      - modified for SGI f77 compatibility
317    o verification/lab_sea
318      - added description of sea-ice model
319      - added missing matlab routines
320      - added test of thermodynamics parallelization
321    
322    checkpoint47a_post
323    o new pkg: aim_v23
324     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
325       for now, keep the same surface forcing as before.
326     - Part-Cell implemented into AIM; check that Heat & Water are conserved
327     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
328     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
329    o add diagnostic of surface correction term in monitor output
330    
331    o bulk_force and therm_seaice
332    - Two packages:  bulk_force (Bulk forcing)
333      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
334    - Earlier integration from Stephaine Dutkiewicz
335      and Patrick Heimbach.
336    - Two ifdef statements for compile time,
337       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
338    
339    checkpoint47
340    differentiable version of checkpoint46n_post
341    o bug fix in quasihydrostaticterms
342    o * "clean" adjoint code (in terms of extensive recomputations)
343        can now be obtained for all GMREDI options (i.e. for
344        - GM_VISBECK_VARIABLE_K
345        - GM_NON_UNITY_DIAGONAL
346        - GM_EXTRA_DIAGONAL
347        - GM_BOLUS_ADVEC )
348      * However, wrong gradient check problem remains unsolved.
349      * New CPP options have been introduced for different
350        tapering schemes
351    o external_fields_load now part of differentiation list
352    o pressure needs multiple storing;
353      would be nice to have store_pressure at beginning or
354      end of forward_step, e.g. by having phiHyd global (5-dim.)
355      (NB: pressure is needed for certain cases in find_rho,
356      which is also invoked through convective_adjustment).
357    o recomputations in find_rho for cases
358     'JMD95'/'UNESCO' or 'MDJWF' are OK.
359    o #define ATMOSPHERIC_LOADING should be differentiable
360    o ini_forcing shifted to begining of initialise_varia
361    o Incorporating QNVS line search routines into MITgcm
362      (this is separate code, and therefore not under pkg)
363      lsopt/, optim/
364    o Updated verification/carbon/
365      - #define GM_VISBECK_VARIABLE_K
366      - GM_taper_scheme    = 'ldd97'    
367    
368    checkpoint46n_post
369    Merging from release1_p8:
370    o verification/natl_box:
371      updating new external_fields_load routine
372    o New package: pkg/seaice
373      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
374      The sea-ice code is based on Hibler (1979-1980).
375      Two sea-ice dynamic solvers, ADI and LSR, are included.
376      In addition to computing prognostic sea-ice variables and diagnosing
377      the forcing/external data fields that drive the ocean model,
378      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
379      The implied surface heat flux is then stored in variable
380      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
381      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
382      non-local transport term.  Because this call precedes model
383      thermodynamics, temperature under sea-ice may not be "exactly" at
384      the freezing point by the time theta is dumped or time-averaged.
385      N.B.: fairly large differences in accuracy occur across
386            different platforms/compilers; comparison between
387            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
388            generated output gives:
389       T           S           U           V
390      C D M    c        m  s        m  s        m  s        m  s
391      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
392      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
393      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
394    
395      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
396    o GAD:
397      - generated new common blocks to account for call of
398        same gad routines with differing traceridentities
399        (needed to modify tracerIdentity indices in GAD.h)
400      - generated separate common blocks for case useCubedSphereExchange
401        (Department of Futurology)
402      - parameter lists to gmredi_?transport: added tracerIdentity
403      - added new key indices to tamc.h
404    o external_fields_load:
405      - added this routine to TAF list
406      - needed to make some common blocks global and additional storing
407        along the same lines as exf package (checkpoint_lev?_directives.h)
408    o exf:
409      updated external forcing package
410      - bug fixes carried over from ecco-branch
411        (missing OBCS_OPTIONS.h in two routines)
412      - enable easy to use "no forcing".
413      - added exf I/O for atmospheric loading
414      - added exf I/O for runoff data
415      - transfered scaling between exf <-> MITgcm to exf namelist
416    o Adding new verification experiment global_with_exf.
417      This verification experiment is almost identical to the
418      global_ocean.90x40x15 experiment, except that it uses
419      the exf (and cal) package instead of the
420      external_fields_load routine (cf README file).
421    
422    checkpoint46m_post
423    o modified testscript to return -- when there are no lines of "%MON" output
424    o added new flag "quasiHydrostatic" for QH mode
425      and new routine quasihydrostaticterms()
426    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
427      New routine: mom_u_coriolis_nh()
428    o fixed sign of non-hydrostatic metric terms in u and v equations.
429      Depend on correct sign of gravitySign.
430    o added work.pc* to .cvsignore in aim directories using ifc
431    o introduced flag for controllin non-hydrostatic metric terms
432    o removed gravitySign from PARM04
433    o switched to g77/ifc from pgf77 in aim experiments
434    
435    checkpoint46l_post
436    o made convective adjustment work with pressure coordinates:
437     - changed the direction of k-loop in convective_adjustment.F for the
438       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
439     - adjusted the reference pressure k-index in convective_adjustment.F
440     - adjusted the convection condition in convect.F (in analogy to
441       calc_ivdc.F)
442     - convective_adjustment no longer computes anything on the halos
443     - removed the warnings about negative salinity from find_rho.F and
444       find_alpha.F; instead the new routine look_for_neg_salinity, called
445       at the beginning of find_rho, find_alpha, and find_beta, does a
446       check of the entire slice, if CPP-option
447       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
448    checkpoint46l_pre
449    
450    checkpoint46k_post
451    o fixed the verification/global_ocean.90x40x15 experiment:
452     - new bathymetry (the world according to A., JMC, and M.)
453     - new initial fields and forcing fields (*.bin files)
454     - new POLY3.COEFFS (for the next release one should switch to a full
455       equation of state: JMD95P or MDJWF)
456     - fixed several errors and redundancies in the data file
457     - experiment uses looped cells
458     - added matlab directory with diagnostic scripts for plotting of output
459    
460    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
461     - read AIM physics parameters from a file (data.aimphys)
462     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
463    
464    checkpoint46j_post
465    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
466    o move wVel computation at the end of the time step, in S/R integr_continuity
467    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
468    o update timeave pkg for wVel diagnostic.
469    checkpoint46j_pre
470    
471    checkpoint46i_post
472    o Clean up AIM package (and keep the results unchanged):
473      include CPP_OPTION and use IMPLICT NONE in all routines ;
474      declare all the variables _RL ; use _d 0 for all numerical constants.
475      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
476    
477    checkpoint46h_post
478    o cleaned up the use of rhoNil and rhoConst.
479      - rhoNil should only appear in the LINEAR equation of state, everywhere
480        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
481        and the dynamical equations are all divided by rhoConst
482    o introduced new parameter rhoConstFresh, a reference density of fresh
483      water, to remove the fresh water flux's dependence on rhoNil. The default
484      value is 999.8 kg/m^3
485    o cleanup up external_forcing.F and external_forcing_surf.F
486      - can now be used by both OCEANIC and OCEANICP
487    checkpoint46h_pre
488    
489     Added code to convert surface volume flux (fresh water) into
490     a mass flux when using P coordinates in the ocean (OCEANICP).
491     Note: It assumes you have set rho0=rhoConst=density of fresh water.
492    
493    checkpoint46g_post
494    o Include a new diagnostic variable phiHydLow for the ocean model
495      - in z-coordinates, it is the bottom pressure anomaly
496      - in p-coordinates, it is the sea surface elevation
497      - in both cases, these variable have global drift, reflecting the mass
498        drift in z-coordinates and the volume drift in p-coordinates
499      - included time averaging for phiHydLow, be aware of the drift!
500    o depth-dependent computation of Bo_surf for pressure coordinates
501      in the ocean (buoyancyRelation='OCEANICP')
502      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
503        Theta, Salinity, and Pressure in the parameter list. This routine is
504        presently contained in find_rho.F. This routine does not give the
505        correct density for 'POLY3', which would be a z-dependent reference
506        density.
507    o cleaned up find_rho
508      - removed obsolete 'eqn' from the parameter list.
509    o added two new verification experiments: gop and goz
510      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
511    checkpoint46g_pre
512    
513    checkpoint46f_post
514    o Enable tangent linear (forward mode) gradient checks:
515      - extended active file handling to g_... files
516      - added TANGENT_SIMULATION to theSimulationMode
517      - extended grdchk package accordingly
518    o added tangent linear setup in verification/carbon/code_ftl
519    o added adjoint setup in verification/front_relax/code_ad
520    
521    checkpoint46e_post
522    o Added new equation of state -> MDJWF
523      - EOS of McDougall et al., 2002, JAOT, submitted
524      - caveat: the equation of state is only valid for a smaller (more
525        realistic?) range of values than JMD95P/Z and UNESCO
526      - added masks to the calculation of pressure in store_pressure
527      - added more check values for density in check_eos (ini_eos.F), some of
528        the old check values are out of the range of the MDJWF-eos, so don't
529        expect perfect matches for those
530    checkpoint46e_pre
531    
532    checkpoint46d_post
533    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
534      'OCEANICP', also initialised field pressure correctly in ini_eos in the
535      case of pressure coordinates. eosType='JMD95Z' in
536      combination with buoyancyRelation='OCEANICP' now causes an error.
537    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
538      in find_alpha/beta.
539    checkpoint46d_pre
540    
541    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
542      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
543    
544    checkpoint46c_post
545    o Changes necessary for ocean in p-coordinates
546     -  Added new buoyancy relation = 'OCEANICP'
547     -  Added new parameters = gravitySign (this used to be contained inside
548        the factor dRdZ which I added when we first switched to R coordinates).
549     X GM/Redi is not compatible (yet)
550     X bottom drag and no-slip need to be debugged.
551    checkpoint46c_pre
552    
553    checkpoint46b_post
554    o Added new equation of state -> JMD95Z and JMD95P
555      - EOS of Jackett and McDougall, 1995, JAOT
556      - moved all EOS parameters into EOS.h
557      - new routines ini_eos.F, store_pressure.F
558    o Added UNESCO EOS, but not recommended because it requires
559      in-situ temperature (see JMD95)
560    o Modified formatting for knudsen2.f in utils/knudsen2 and added
561      unesco.f to be used with POLY3
562    checkpoint46b_pre
563    
564    checkpoint46a_post
565    o Added (atmospheric) pressure loading
566      - new field in FFIELDS.h, etc...
567      - new cpp flag ATMOSPHERIC_LOADING
568    o Changed hFacC to _hFacC in calc_phi_hyd.F
569    o Added SHORTWAVE_HEATING to some files for consistency
570    checkpoint46a_pre
571    
572    checkpoint46
573    further merges from release1_p5
574    o new ctrl package
575      - adopted from ECCO environment to enable optimization
576      - added Eliassen Palm fluxes to controls
577    o added Eliassen Palm flux controls to gradient check package
578    o cost package
579      - Compatible with new ctrl package
580      - added Eliassen Palm cost hooks
581      - modif's of existing cost functions
582    o Adjoint-related bug fixes in kpp:
583      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
584      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
585    o autodiff package
586      - flow directives:
587        + new for S/R do_the_model_io
588        + enhanced for S/R checkpoint
589        + new gmredi.flow
590      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
591        disable adcommon.h/g_common.h by default.
592      - fixed problem for adjoint of global_max
593    o modified verification/carbon/
594    o New setup for adjoint of global_ocean
595    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
596    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
597    o incorporated hooks for sponge layer code (external_forcing.F)
598    
599    checkpoint45d_post
600    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
601    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
602      (affects plume_on_slope "cg2d" output)
603    o add new parameter deltaTfreesurf for free-surface time stepping
604    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
605    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
606    o change phiMin in exp1 (to agree with documentation)
607    o add new flags:
608     - T,S forcing inside/outside Adams-Bashforth
609     - turn off temp,salt advection and/or forcing
610     - for each tracer, define internal flag for multiDimAdvection & A-B
611    o monitor: change definition of KE to check conservation of Energy
612    
613    checkpoint45c_post
614    o Removed f90 comments ("!")
615    o Modified initialisations to enable exf package for MITgcm
616      (without invoking ECCO_PACKAGE).
617    o modifications to gradient check package (Martin Losch)
618      - enable centered differences
619      - modified format of standard output
620    
621    checkpoint45b_post
622    o cleaned exchange calls in cg2d
623    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
624    o included CPP option SINGLE_LAYER_MODE in thermodynamics
625      to configure barotropic setup (Martin Losch)
626    o moved some initialisations within bi,bj loop in dynamics
627      (TAF flow dependency)
628    o in initialise_varia, moved call packages_init_variables
629      before convective_adjustment_init
630      (corresponding adjustment of TAF tape initialisation).
631    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
632    
633    checkpoint45a_post
634    o compute Rho over the whole domain (extend iMin,jMin indices)
635    o specific exchange for X-slice domain (case Ny=1)
636    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
637    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
638    
639    checkpoint44h_post = checkpoint45
640    o Fix to restore differentiability:
641      place at which packages_init_variables is called in
642      initialise_varia is crucial for reverse control flow.
643    o modifications in GMRedi to enable stable adjoint
644      (corresponding modif's in thermodynamics, dynamics)
645    o added missing hook for sponge layer code in external_forcing
646    o modified test cost functions
647    o storing in gad_advection (plus removal of write(0,*)!
648    o missing headers TR1.h added in convective_adjustment routines
649    o errorMessageUnit set non-equal zero in eeboot
650      (conflict on some platforms, e.g. IBM SP3)
651    o modified carbon verif.
652    
653    checkpoint44h_pre
654    o vertical grid option: allow to put the Interface at the middle between
655      2 cell-centers ; replace delZ in pkg/kpp by drF.
656    o GM Advective form: Tracers are advected using the residual transport (=
657      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
658    
659    checkpoint44g_post
660    o fix surface correction term in multiDimAdvection (affects plume_on_slope
661      results) ; ifdef missing in thermodynamics.F
662    
663    checkpoint44f_pre,checkpoint44f_post
664    o added PTRACERS package
665      This allows an arbitrary number of passive tracers to be integrated
666      forward simultaneously with the dynamicaly model.
667      + Implemented so far:
668        - basic forward algorithm (time-stepping, advection, diffusion, convection)
669        - I/O and checkpointing
670        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
671      + Not implemented so far:
672        - KPP
673        - OBCS
674      + No specific example supplied (yet) but global_ocean.90x40x15 has the
675        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
676        line in data.pkg.
677      + This package is disabled by default since it increases storage.
678    
679    
680    o testscript: added -cleanup option
681    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
682                 b) enable to filter 2D fields.
683    
684    checkpoint44e_pre,post
685    o re-wrote convective adjustment to use pre-calculated weights
686      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
687      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
688      Original calls to convect() still in place.
689    
690    chkpt44d_pre,post
691    o added missing EXCLUDE_MONITOR flags
692    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
693      (incompatible typ in MIN/MAX expressions caused problems
694      on IBM SP3)
695    o in genmake added variable MAKEDEPEND
696      plus resetting for case SunOS
697    o added timer_stats.c routine for IBM SP3
698    o removed variables in dynamics
699    !!! I forgot to create tag chkpt44d_pre !!!
700    !!! But chkpt44d_pre = chkpt44c_post    !!!
701    
702    o real fresh water flux implemented with non-linear free-surface.
703    
704    chkpt44c_pre,post
705    o few fix (mask in shap_s2, EmPmR in external_field_load,
706      USE_NATURAL_BCS in solve_for_P);
707    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
708    
709    checkpoint44b_pre/_post
710    o merge of relevant stuff from the ecco-branch:
711      - genmake: removed $S64 overwrite for case SunOS
712      - pkg/exf: update and corrections for field swapping and obcs
713      - pkg/ecco: parameter lists for the_model_main, the_main_loop
714                  harmonized between ECCO and MITgcm
715      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
716                      updated checkpointing_lev... lists for obcs
717      - model/src: minor changes in forward_step, plot_field
718                   added directive for divided adjoint in the_main_loop
719      - pkg/mdsio: added mdsio_gl_slice
720    
721    o check parameters & config (chkpt44a_pre,post)
722    o OBC and NonLin_FrSurf.
723    
724    checkpoint44
725    o fix bug in mom_vi_del2uv
726    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
727    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
728    o update AIM experiments (NCEP input files)
729    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
730    o added some stuff for AD
731    
732    checkpoint43
733    o added two new advection tests
734    o added global 4x4 degree ocean test
735    o added test of H&S94 with free surface on cube
736    o some final mods for gradient check, adjoint,...
737    
738    checkpoint42
739      Fixed AD-related problems:
740    o Store directives up-to-date with re-arranged Adams-Bashforth
741      (mainly thermodynamics.F)
742    o New store directives for multi-dim. advection schemes
743      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
744      * new common block and key passkey
745      (mainly gad_advection.F)
746    o Modified store directives for split of dynamics/thermodynamics
747      for the case ALLOW_KPP
748    o Cleaned argument list for timestep_tracer.F
749    
750    checkpoint41
751    o re-formatted/added comments in prologues of key subroutines
752      to work with protex
753    
754    checkpoint40
755    o moved calc_gs, calc_gt and calc_tr1 back to model/src
756    o added FLT (floats) package from Arne along with demo. experiment
757    o re-arranged Adams-Bashforth scheme for tracers to allow easier
758      implementation of forward-in-time forcing terms
759    o more mods for non-linear free-surface including new variable
760    o modified multi-dim method to work on cube
761    o bug fix in KPP (from DM)
762    
763    checkpoint40pre9
764    o added DST advection schemes
765    o fix MPI bug on SGI's
766    o modifications for non-linear free-surface
767    o fixed conditionals for fixed flow/passive tracer only mode
768    o added tension/strain form of stress tensor
769    o changes to commenting of arguments for TAF/TAMC
770    o added/updated many matlab scripts
771    o added multi-dimensional advection method for tracers
772      
773    checkpoint40pre8
774    o new package rw/
775      Added method for dumping intermediate local arrays:
776      mdsio_writetile - same as mdsio_writefield except works from inside
777                        bi,bj loop
778      mdsio_writelocal - same as mdsio_writetile except works for local
779                         arrays
780      write_local_r? - higher-level wrapper for mdsio_writelocal
781      Controlled by diagFreq. Defaults to zero (ie. no dumps)
782      Example given at end of mom_vecinv.F that dumps some local arrays.
783    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
784      control flux-form versus vector invariant code.
785      Switch is runtime flag vectorInvariantMomentum (defaults to false)
786      or genmake -DISABLE ...
787    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
788      (additional storing is now needed for case vecinv;
789      currently nothing implemented to switch this storing off
790      in case fluxform is used since no CPP flag available).
791    
792    checkpoint40pre7
793    o bug fix in dynamics.F
794      calc_viscosity called before k=1,Nr loop.
795    o added some #ifdef's ALLOW_PASSIVE_TRACER
796    o cleaned initialisations in ctrl_map_ini
797      related to TAF
798    
799    checkpoint40pre6
800    o split dynamics into thermodynamics & dynamics
801    o corresponding split of calc_diffusivity into
802      calc_diffusivity, calc_viscosity
803      (kpp_calc_diff, kpp_calc_visc).
804    o Added diffkr, kapgm to control variables
805    o bug fix in gmredi_slope_limit for ldd97
806    
807    checkpoint40pre5
808    o proper initialization of Adams-Bashforth time stepping
809      + uses forward step for very first step of model (iter=0)
810    o re-generated *all* output since almost all output is modified by this
811      change (sorry but we've been putting this one off for about 2 years)
812      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
813        *not* regenerated since they are already out of date and I don't
814        want to create the impression that they are suddenly working.
815    o removed KAP stuff for DEC's
816    o modified/added many .cvsignore files in */code and */input
817    o added new expt "solid-body.cs-32x32x1"
818      + this uses an alternative form of ini_curvilinear_grid.F which
819        is not necessarily any better than the current one...
820    
821    checkpoint40pre4
822    o added re-initialisations of utrans,vtrans,rtrans in
823      calc_common_factors which are crucial for TAF.
824    o extended iMin,jMin range for calc_common_factors,
825      calc_diffusivity
826    o added option ALLOW_PASSIVE_TRACER
827    o a few minor updates and fixes
828    
829    checkpoint40pre3
830    o created calc_gtr1.F for gad package
831    o split the_main_loop and re-introduced forward_step
832    o some recomputations of nIter0 for TAMC
833    
834    checkpoint40pre2
835    o Updated to latest branch of AJA, JMC
836    o Added gradient check package
837    o Added routines for passive tracer handling
838    o Added carbon sequestration sensitivity experiment
839    
840    checkpoint39
841     o Modifications and fixes to support TAMC
842       (mainly missing or wrong directives)
843     o Corrected common blocks when fooling TAMC to produce adjoint I/O
844       in addummy_in_stepping
845     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
846     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
847     o Included following packages:
848       cal: calendar
849       exf: external forcing
850       ecco: essential routines to control use of cal, exf
851             (NB: this is not the full ECCO environment)
852     o disabled some packages by default in genmake
853    
854    checkpoint38
855     o see notes_c37_adj.txt
856     o corrected wrong layer index in external_forcing_t
857     o replaced the_main_loop/forward_step by the_main_loop
858     o removed forceoutput from write_state
859       (replaced criteria for initial/final state)
860     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
861    
862    checkpoint37
863     o mdsio.F routine split and packaged in pkg/mdsio
864       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
865        used unless genmake -disable=mdsio)
866     o allow a more precise surface-geopotential gradient for the atmosphere
867       taking into account the change in space of Alpha (=1/rho) at the surface.
868     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
869       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
870     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
871       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
872       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
873     o Time-Average diagnostics defined as a pseudo package "timeave".
874     o pickup files : old pickup (before c35) did not work with new code (c35
875       and after) unless activating 2 commented lines in initialise-varia.
876     o Non-Hydrostatic pickup file Pb fixed.
877     o bug with Rigid-lid version (since c35) fixed.  
878    
879    checkpoint36
880     o implement Crank-Nickelson barotropic time-stepping
881     o recover Time-Average diagnostics
882     o fix Pb in checkpoint (PR#19)
883     o AIM become a standard package ; clean unused CPP_kees
884    
885    checkpoint35
886     o subtantial rewrite of dynamics.f
887     o allows staggered time-stepping
888     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
889     o added bottom drag (linear + quadratic)
890    
891    checkpoint34
892     o Modified exchange routines for correct reverse simulation.
893     o Added verification output to comply with bug fix in impldiff.F
894       as of c33 (exp2, natl_box).
895     o Corrected store directives in dynamics.F
896     o Corrected array boundaries in impldiff.F
897     o Corrected array dimensions in gmredi.
898       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
899     o Added routine GLOBAL_SUM_INT to global_sum.F
900     o Added mdsio_gl.F for ECCO purposes.
901    
902    checkpoint33
903     o Fixed bug in lower BC in impldiff.F
904     o Fixed confusion about units of forcing arrays in FFIELDS.h
905       namely Fu,Fv,Qnet,Qsw,EmPmR:
906       - Removed verification/natl_box/code/external_fields_scale.F
907         (did not differ from that in model/src)
908       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
909         (see FFIELDS.h for description)
910       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
911         kpp_calc.F and kpp_transport_t.F
912       - Removed model/src/external_fields_scale.F and calls to it
913       - verification/natl_box uses flux data with "atmospheric" sign so
914         a special version of external_fields_load.F is used to
915         change the data as it's read in. This way, the arrays
916         have the right units and signs at all times tha a user could
917         possibly use them.
918     o Corrected genmake to delete a temporary file during configuration
919    
920    checkpoint32
921     o Scaling of forcing fields moved from external_forcing.F to
922       external_fields_scale.F, called directly after loading fields.
923     o Surface relaxation terms added to surface tendency fields in
924       extra subroutine.
925     o impldiff.F changed to avoid storing by TAMC of huge intermediate
926       fields.
927     o Changes in GMRedi to comply with packaging structure.
928     o Modifications and bug fixes in KPP package.
929     o Verification experiment for KPP added (verification/nat_box/)
930    
931    checkpoint31
932     o Packages interface brought in line with defined standard
933       -> new routines packages_...F
934       -> changes in initialise_fixed.F, initialise_varia.F
935       -> enables initialisation interface for ECCO package
936     o Rescaling of external forcing fields immediately after read
937       (removed from external_forcing.F)
938       -> new: surface_fields_scale.F
939       -> affects ini_foorcing.F, external_fields_load.F
940     o Computation of surface tendencies before tendency updates.
941       -> new: external_forcing_surf.F
942     o Change of variable names useGMRedi, useKPP, useECCO
943     o Further changes in dynamics.F, impldiff.F for TAMC
944     o Tested for experiments 0, 2, 4.
945       - not yet tested for GMRedi.
946       - not yet tested for KPP.
947    
948  checkpoint30  checkpoint30
949   o Updates for OBCs   o Updates for OBCs

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