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revision 1.23 by adcroft, Mon Aug 2 15:39:41 1999 UTC revision 1.144 by heimbach, Sat Mar 8 00:35:53 2003 UTC
# Line 3  $Header$ Line 3  $Header$
3      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
4      ==============================      ==============================
5    
6    checkpoint50
7    - 2nd step of merge with ecco-branch:
8      merge changes in ecco-branch back into main trunk
9    - bug fix in find_alpha
10    - more storing in gmredi_calc_tensor.F, kpp_routines.F
11    - avoid iterative loop in ini_pressure for ALLOW_AUTODIFF_TAMC
12    - merged some sliced AD support routines
13    
14    checkpoint49
15    merged from ecco-branch:
16    o exf:
17      - Enable initialisation of forcing fields to constant
18        (runtime) values.
19      - in exf_getffields.F
20        Reduce i-/j-loop to interior domain, discarding overlaps.
21        That also fixes wrong TAF-key computations for key_1, key_2
22        with bulf formulae.
23      - exf_init.F modify #ifdef for exf_init_evap
24      - exf_getffieldrec.F, ctrl_getrec.F
25        The following INT-usages are not safe:
26          fldsecs  = int(fldsecs/fldperiod)*fldperiod
27          fldcount = int(fldsecs/fldperiod) + 1
28        and were modified.
29    o autodiff: checkpoint_lev...
30      - updated storing for bulk formulae (some arrays were missing)
31      - added state for seaice package
32      - synchronized with main branch
33    o DIVA:
34      Modif.s in
35      - the_main_loop.F
36      - the_model_main.F
37      and added cost_final_restore.F cost_final_store.F
38      o With these changes, it is possible to fully separate
39        the first forward run to compute the cost function (mdthe_main_loop)
40        and adjoint runs over individual DIVA intervals (adthe_main_loop)
41        into separate model executions.
42        This enables better tuning of DIVA to given queue sizes.
43      o Loss of cost function value in consecutive DIVA runs is
44        fixed by storing to 'costfinal' file.
45      o Appropriate call of ctrl_unpack/_pack,grdchk_main at
46        beginning/end of adjoint integration is accounted for.
47      The current changes apply to TAF-1.4.26.
48      TAF has one remaining bug, requiring one manual change
49      (see MITgcm manual).
50    o cal: synchronized between MAIN and ecco-branch
51    
52    checkpoint48i_post
53    o Changes to restore differentiability of code w.r.t. previous tag
54      (mostly adding new routines to make list and replacing
55      pressure by totPhiHyd).
56    o Updated and merged grdchk package
57      - has both ADM and TLM checks
58      - works for single- and multi-proc.
59      - output cleaned
60      - worked successfully for parallel DIVA
61    o genmake:
62      - Adding -platform=SP4
63      - Modif. for DEC Alpha (many don't have makedepend; use mkdep instead).
64    o Modif. for DIVA:
65      ctrl_unpack should not be called in intermediate DIVA interval.
66      (similar thing would apply for active files such as
67      tbar, sbar, psbar, which should not be reinitialised;
68      only relevant for ecco-branch)
69    
70    checkpoint48h_post
71    o improve "ini_p_ground" when using finite difference form for calc_phi_hyd
72    o Added net flux to downward flux conversion to pkg/exf/exf_getffields.F
73    o Added SEAICE_initialHEFF to pkg/seaice
74    o ecco_the_model_main.F: SEAICE_WRITE_PICKUP must precede WRITE_CHECKPOINT
75    
76    checkpoint48g_post
77    --- EOS:
78    o compute locally the pressure for use in EOS: UNESCO, JMD95P, MDJWF
79      store total Potential in totPhyHyd for diagnostics & EOS.
80    o fix restart and overlap Pb when using Z-coord and EOS funct. of P
81    --- Pressure/geopotential gradient:
82    o use Ro_surf & R_low instead of hFac in cal_phi_hyd:
83    o NLFS + p-coord.: eta*Alpha' is not longer lagging 1.time-step behind
84      ( changes results of global_ocean_pressure )
85    o NLFS + z-coord.: add eta*Rho' contribution.
86    o accurate phiHyd when using interface-W at the middle between 2 centers
87     ( changes results of ideal_2D_oce )
88    o includes r* 2nd term in potential gradient.
89    
90    checkpoint48f_post
91    Merging from release1_p12:
92    o Modifications for using pkg/exf with pkg/seaice
93      - improved description of the various forcing configurations
94      - added basic radiation bulk formulae to pkg/exf
95      - units/sign fix for evap computation in exf_getffields.F
96      - updated verification/global_with_exf/results/output.txt
97    o Added pkg/sbo for computing IERS Special Bureau for the Oceans
98      (SBO) core products, including oceanic mass, center-of-mass,
99      angular, and bottom pressure (see pkg/sbo/README.sbo).
100    o Lower bound for viscosity/diffusivity in pkg/kpp/kpp_routines.F
101      to avoid negative values in shallow regions.
102      - updated verification/natl_box/results/output.txt
103      - updated verification/lab_sea/results/output.txt
104    o MPI gather, scatter: eesupp/src/gather_2d.F and scatter_2d.F
105    o Added useSingleCpuIO option (see PARAMS.h).
106    o Updated useSingleCpuIO option in mdsio_writefield.F to
107      work with multi-field files, e.g., for single-file pickup.
108    o pkg/seaice:
109      - bug fix in growth.F: QNET for no shortwave case
110      - added HeffFile for specifying initial sea-ice thickness
111      - changed SEAICE_EXTERNAL_FLUXES wind stress implementation
112    o Added missing /* */ to CPP comments in pkg/seaice, pkg/exf,
113      kpp_transport_t.F, forward_step.F, and the_main_loop.F
114    o pkg/seaice:
115      - adjoint-friendly modifications
116      - added a SEAICE_WRITE_PICKUP at end of the_model_main.F
117    
118    checkpoint48e_post
119    o New S/R for diagnostic of bottom pressure (phi0surf was missing in c48d_post)
120    o dynamics: change definition of computational domain & adapt mom_fluxform
121      accordingly ; when viscA4=0, allows to run the dynamics with Olx=Oly=2.
122    o following exp works with Olx=Oly=2 (and pass through checkbounds option):
123        adjust_nlfs.cs-32x32x1 adjustment.128x64x1 adjustment.cs-32x32x1
124        exp0 exp1 exp2 exp4 exp5 hs94.cs-32x32x5 hs94.128x64x5 hs94.1x64x5
125        global_ocean.90x40x15 global_with_exf global_ocean_pressure
126        inverted_barometer solid-body.cs-32x32x1
127      (high order AdvScheme and/or multiDimAd works with Olx=Oly=2 ? not sure)
128    
129    checkpoint48d_post
130    o in preparation for r*:
131     a) use pre-computed gradient of hydrostatic potential:
132        changes in timestep.F & mom_cdscheme.F affects results of ideal_2D_oce
133     b) move phi0surf from calc_phi_hyd to calc_grad_phi_hyd:
134        => affects results of glob_oce_pressure (different truncation error)  
135      update output.txt of ideal_2D_oce & global_ocean_pressure
136    
137    checkpoint48d_pre
138    o in preparation for r*:
139      new S/R (calc_grad_phi_hyd.F) to compute Hydrostatic potential gradient.
140      pass the 2 comp. of the grad. as arguments to momentum S/R.
141      but for the moment, only used if it does not change the results.
142    o add finite volume form of calc_phi_hyd for buoyancyRelation OCEANIC & OCEANICP
143    
144    checkpoint48c_post
145    Modifications in treatment of initial flux forcing controls
146    to avoid extra storing of flux fields.
147    
148    checkpoint48c_pre
149    o Added tidal_basin_2d experiment (currently 1D!)
150    o can use r* Coordinate with OBC (but Orlanski Rad. BC not yet implemented)
151    
152    checkpoint48b_post
153    o r* coordinate added in #ifdef NONLIN_FRSURF block.
154     (modification to pressure gradient not yet implemented)
155    o mom_fluxform: new S/R mom_calc_rtrans.F computes vertical transports
156      (for U & V) that are used for vertical advection of momentum.
157    
158    checkpoint48a_post
159    o In preparation for r*, use temp. array to compute vertical transport
160       in flux-form momentum pkg. => change results of few test-exp.
161      Update output of: exp4, exp5, front_relax, global_ocean_pressure,
162                        lab_sea, natl_box & plume_on_slope
163    
164    checkpoint48
165    o fix small bug that was causing lot of warning (TIMER_STOP 'UPDATE_CG2D')
166    
167    checkpoint47j_post
168    o add new exp. (ideal_2D_oce) to test "exotic" parameters and options.
169    o moved adexch from forward_step to addummy_in_stepping
170    o added exch in ctrl_map_...
171    o aveFreq.=0. at end of cost_final to avoid overwrite in
172      reverse checkpointing loop
173    o Yet more changes in gmredi:
174      * adgmredi_calc_tensor
175        avoiding all recomputation of gmredi_slope_limit
176      * adgmredi_x/y/rtransport
177        added flag for excessive storing to avoid recomp. of
178        u/v/rtans, dTdx/y/z
179        -> this is not really necessary and very memory-consuming
180      * adgmredi_slope_psi:
181        consistency with gmredi_slope_limit in treatment of GM_slopeSqCutoff
182      * gmredi_slope_limit
183        re-activated full calculation of taperfct for case 'ac02'
184    o updating verification/ adjoints of carbon, global_ocean.90x40x15
185    
186    checkpoint47i_post
187    o GM_EXCLUDE_() replace GM_TAPER_(): by default, all the code is compiled.
188    o add GM_Small_Number & GM_slopeSqCutoff as run-time parameters (data.gmredi)
189      default values = 1.D-12 & 1.D+48 (=> give same results as checkpoint47f_post)
190    o cg2dTargetResWunit: define tolerance using deltaTmom (and not deltaTfreesurf)
191    o gmredi: fix few bugs.
192    
193    checkpoint47h_post (duplicate tag for PH's c48 tag, in order to move c48)
194    This will be a good checkpoint to plug into the ecco-branch.
195    o few modif.'s to get latest version adjointed
196      (mainly kick out code in ini_linear_phisurf)
197    o modif's to run adjoint with exactConserv
198    o case GM_BOLUS_ADVEC should be cleaned
199      S/R gmredi_slope_psi should be cleaned
200    o verification/carbon now has exactConserv=.TRUE.
201    
202    checkpoint47g_post
203    o time-average AIM output: becomes independent from statvars time-average
204      (can be used with #undef ALLOW_TIMEAVE) ; add new variables (e.g., RH)
205    o After TAF bug fix:
206      Tested adjoint of gmredi package.
207      Tests were done with checkpoint47 rather than with latest
208      checkpoint47f_post since the latter is broken for the adjoint
209      verification/carbon/ contains both ADM and TLM gradient checks.
210    Here they are, before they get changed/lost/stolen.
211    Mostly modif.'s to fix numerical sensitivities.
212    Gradient checks OK for
213    - GM_taper_scheme:
214      * clipping
215      * ac02
216      * linear
217      * glw91
218      * dm95
219      * ldd97
220    - GMREDI_OPTIONS:
221      * GM_VISBECK_VARIABLE_K
222      * GM_NON_UNITY_DIAGONAL
223      * GM_EXTRA_DIAGONAL
224      * GM_BOLUS_ADVEC
225    in conjunction with data.gmredi parameters to be checked in
226    in a few minutes under verification/carbon/code/
227    
228    checkpoint47f_post
229    Merging from release1_p10:
230    o modifications for using pkg/exf with pkg/seaice
231      - pkg/seaice CPP options SEAICE_EXTERNAL_FORCING
232        and SEAICE_EXTERNAL_FLUXES
233      - pkg/exf CPP options EXF_READ_EVAP and
234        EXF_NO_BULK_COMPUTATIONS
235      - usage examples are Experiments 8 and 9 in
236        verification/lab_sea/README
237      - verification/lab_sea default experiment now uses
238        pkg/gmredi, pkg/kpp, pkg/seaice, and pkg/exf
239    
240    checkpoint47e_post
241    o created a tag prior to creating a branch
242    
243    checkpoint47d_post
244    o fixed bug in the oceanic pressure coordinates code: vertical viscosity
245      at the bottom boundary had an erroneous half slip boundary condition
246    o added bottom drag and no slip boundary condition capabilities to
247      oceanic pressure coordinates code
248    o added new verification experiment global_ocean_pressure, this experiment is
249      also described in the tutorial section of the manual
250    checkpoint47d_pre
251    
252    checkpoint47c_post
253    o Added a verification experiment for a global cubed-sphere ocean run
254      -  verification/global_ocean.cubed32x32x30
255      -  uses pkg/therm_seaice and pkg/bulk_forcing
256    
257    o allow to run AIM physics with SPEEDY input files (from Franco Molteni)
258    o allow a more accurate definition of Ro_Surf (selectFindRoSurf=1)
259      when using P-coordinate; only implemented for atmospheric config.
260    o OCEANICP & realFreshWater: include P-E direct effect on wVel ;
261      NOTES: requires option NONLIN_FRSURF to be "#define".
262    o update advect_xz/results/output.txt (left from checkpoint44g_post)
263    
264    checkpoint47b_post
265    Merging from release1_p9:
266    o pkg/seaice
267      - removed GOTO's and added taf directives
268      - double precision constants to reduce the g77 (Linux)
269        to F77 (SGI) differences reported in release1_p8
270    o tools/genmake
271      - added SGI options
272    o verification/testscript
273      - updated to that of checkpoint47a_post
274    o verification/global_ocean.90x40x15/input/eedata
275      - modified for SGI f77 compatibility
276    o verification/lab_sea
277      - added description of sea-ice model
278      - added missing matlab routines
279      - added test of thermodynamics parallelization
280    
281    checkpoint47a_post
282    o new pkg: aim_v23
283     = F. Molteni atmos.physics (SPEEDY, ver23) adapted to MITgcm.
284       for now, keep the same surface forcing as before.
285     - Part-Cell implemented into AIM; check that Heat & Water are conserved
286     - aim.5l_cs: use new aim pkg (run 10yr & get better results than before)
287     - aim.5l_LatLon & aim.5l_Equatorial_Channel are still using old aim pkg
288    o add diagnostic of surface correction term in monitor output
289    
290    o bulk_force and therm_seaice
291    - Two packages:  bulk_force (Bulk forcing)
292      and therm_seaice (thermodynamic_seaice) - adopted from LANL CICE.v2.0.2
293    - Earlier integration from Stephaine Dutkiewicz
294      and Patrick Heimbach.
295    - Two ifdef statements for compile time,
296       ALLOW_THERM_SEAICE and ALLOW_BULK_FORCE
297    
298    checkpoint47
299    differentiable version of checkpoint46n_post
300    o bug fix in quasihydrostaticterms
301    o * "clean" adjoint code (in terms of extensive recomputations)
302        can now be obtained for all GMREDI options (i.e. for
303        - GM_VISBECK_VARIABLE_K
304        - GM_NON_UNITY_DIAGONAL
305        - GM_EXTRA_DIAGONAL
306        - GM_BOLUS_ADVEC )
307      * However, wrong gradient check problem remains unsolved.
308      * New CPP options have been introduced for different
309        tapering schemes
310    o external_fields_load now part of differentiation list
311    o pressure needs multiple storing;
312      would be nice to have store_pressure at beginning or
313      end of forward_step, e.g. by having phiHyd global (5-dim.)
314      (NB: pressure is needed for certain cases in find_rho,
315      which is also invoked through convective_adjustment).
316    o recomputations in find_rho for cases
317     'JMD95'/'UNESCO' or 'MDJWF' are OK.
318    o #define ATMOSPHERIC_LOADING should be differentiable
319    o ini_forcing shifted to begining of initialise_varia
320    o Incorporating QNVS line search routines into MITgcm
321      (this is separate code, and therefore not under pkg)
322      lsopt/, optim/
323    o Updated verification/carbon/
324      - #define GM_VISBECK_VARIABLE_K
325      - GM_taper_scheme    = 'ldd97'    
326    
327    checkpoint46n_post
328    Merging from release1_p8:
329    o verification/natl_box:
330      updating new external_fields_load routine
331    o New package: pkg/seaice
332      Sea ice model by D. Menemenlis (JPL) and Jinlun Zhang (Seattle).
333      The sea-ice code is based on Hibler (1979-1980).
334      Two sea-ice dynamic solvers, ADI and LSR, are included.
335      In addition to computing prognostic sea-ice variables and diagnosing
336      the forcing/external data fields that drive the ocean model,
337      SEAICE_MODEL also sets theta to the freezing point under sea-ice.
338      The implied surface heat flux is then stored in variable
339      surfaceTendencyTice, which is needed by KPP package (kpp_calc.F and
340      kpp_transport_t.F) to diagnose surface buoyancy fluxes and for the
341      non-local transport term.  Because this call precedes model
342      thermodynamics, temperature under sea-ice may not be "exactly" at
343      the freezing point by the time theta is dumped or time-averaged.
344      N.B.: fairly large differences in accuracy occur across
345            different platforms/compilers; comparison between
346            g77 (Linux) and F77 (SGI Origin 2000/MIPSpro)
347            generated output gives:
348       T           S           U           V
349      C D M    c        m  s        m  s        m  s        m  s
350      n p a R  g  m  m  e  .  m  m  e  .  m  m  e  .  m  m  e  .
351      f n k u  2  i  a  a  d  i  a  a  d  i  a  a  d  i  a  a  d
352      g d e n  d  n  x  n  .  n  x  n  .  n  x  n  .  n  x  n  .
353    
354      Y Y Y Y  5  5  7  7  7  8 10  9  6  6  6  6  7  5  7  5  7 FAIL  lab_sea
355    o GAD:
356      - generated new common blocks to account for call of
357        same gad routines with differing traceridentities
358        (needed to modify tracerIdentity indices in GAD.h)
359      - generated separate common blocks for case useCubedSphereExchange
360        (Department of Futurology)
361      - parameter lists to gmredi_?transport: added tracerIdentity
362      - added new key indices to tamc.h
363    o external_fields_load:
364      - added this routine to TAF list
365      - needed to make some common blocks global and additional storing
366        along the same lines as exf package (checkpoint_lev?_directives.h)
367    o exf:
368      updated external forcing package
369      - bug fixes carried over from ecco-branch
370        (missing OBCS_OPTIONS.h in two routines)
371      - enable easy to use "no forcing".
372      - added exf I/O for atmospheric loading
373      - added exf I/O for runoff data
374      - transfered scaling between exf <-> MITgcm to exf namelist
375    o Adding new verification experiment global_with_exf.
376      This verification experiment is almost identical to the
377      global_ocean.90x40x15 experiment, except that it uses
378      the exf (and cal) package instead of the
379      external_fields_load routine (cf README file).
380    
381    checkpoint46m_post
382    o modified testscript to return -- when there are no lines of "%MON" output
383    o added new flag "quasiHydrostatic" for QH mode
384      and new routine quasihydrostaticterms()
385    o added 2*Omega*Cos(phi)*W to u equations (non-hydrostatic Coriolis term)
386      New routine: mom_u_coriolis_nh()
387    o fixed sign of non-hydrostatic metric terms in u and v equations.
388      Depend on correct sign of gravitySign.
389    o added work.pc* to .cvsignore in aim directories using ifc
390    o introduced flag for controllin non-hydrostatic metric terms
391    o removed gravitySign from PARM04
392    o switched to g77/ifc from pgf77 in aim experiments
393    
394    checkpoint46l_post
395    o made convective adjustment work with pressure coordinates:
396     - changed the direction of k-loop in convective_adjustment.F for the
397       case of pressure coordinates (OCEANICP,ATMOSPHERIC buoyancyRelation)
398     - adjusted the reference pressure k-index in convective_adjustment.F
399     - adjusted the convection condition in convect.F (in analogy to
400       calc_ivdc.F)
401     - convective_adjustment no longer computes anything on the halos
402     - removed the warnings about negative salinity from find_rho.F and
403       find_alpha.F; instead the new routine look_for_neg_salinity, called
404       at the beginning of find_rho, find_alpha, and find_beta, does a
405       check of the entire slice, if CPP-option
406       CHECK_SALINITY_FOR_NEGATIVE_VALUES is defined
407    checkpoint46l_pre
408    
409    checkpoint46k_post
410    o fixed the verification/global_ocean.90x40x15 experiment:
411     - new bathymetry (the world according to A., JMC, and M.)
412     - new initial fields and forcing fields (*.bin files)
413     - new POLY3.COEFFS (for the next release one should switch to a full
414       equation of state: JMD95P or MDJWF)
415     - fixed several errors and redundancies in the data file
416     - experiment uses looped cells
417     - added matlab directory with diagnostic scripts for plotting of output
418    
419    o S/R aim_initialise.F replace S/R aim_init from file aim_do_inphys.F:
420     - read AIM physics parameters from a file (data.aimphys)
421     - set defaults values = F.Molteni paper (Clim.Dyn., 2002)
422    
423    checkpoint46j_post
424    o split calc_exact_eta in 2 S/R : integr_continuity & update_etaH
425    o move wVel computation at the end of the time step, in S/R integr_continuity
426    o create specific S/R to exchange T,S before DYNAMICS (for stagger time step)
427    o update timeave pkg for wVel diagnostic.
428    checkpoint46j_pre
429    
430    checkpoint46i_post
431    o Clean up AIM package (and keep the results unchanged):
432      include CPP_OPTION and use IMPLICT NONE in all routines ;
433      declare all the variables _RL ; use _d 0 for all numerical constants.
434      use ifdef ALLOW_AIM everywhere. And now AIM can be used with g77 !
435    
436    checkpoint46h_post
437    o cleaned up the use of rhoNil and rhoConst.
438      - rhoNil should only appear in the LINEAR equation of state, everywhere
439        else rhoNil is replaced by rhoConst, e.g. find_rho computes rho-rhoConst
440        and the dynamical equations are all divided by rhoConst
441    o introduced new parameter rhoConstFresh, a reference density of fresh
442      water, to remove the fresh water flux's dependence on rhoNil. The default
443      value is 999.8 kg/m^3
444    o cleanup up external_forcing.F and external_forcing_surf.F
445      - can now be used by both OCEANIC and OCEANICP
446    checkpoint46h_pre
447    
448     Added code to convert surface volume flux (fresh water) into
449     a mass flux when using P coordinates in the ocean (OCEANICP).
450     Note: It assumes you have set rho0=rhoConst=density of fresh water.
451    
452    checkpoint46g_post
453    o Include a new diagnostic variable phiHydLow for the ocean model
454      - in z-coordinates, it is the bottom pressure anomaly
455      - in p-coordinates, it is the sea surface elevation
456      - in both cases, these variable have global drift, reflecting the mass
457        drift in z-coordinates and the volume drift in p-coordinates
458      - included time averaging for phiHydLow, be aware of the drift!
459    o depth-dependent computation of Bo_surf for pressure coordinates
460      in the ocean (buoyancyRelation='OCEANICP')
461      - requires a new routine (FIND_RHO_SCALAR) to compute density with only
462        Theta, Salinity, and Pressure in the parameter list. This routine is
463        presently contained in find_rho.F. This routine does not give the
464        correct density for 'POLY3', which would be a z-dependent reference
465        density.
466    o cleaned up find_rho
467      - removed obsolete 'eqn' from the parameter list.
468    o added two new verification experiments: gop and goz
469      (4x4 degree global ocean, 15 layers in pressure and height coordinates)
470    checkpoint46g_pre
471    
472    checkpoint46f_post
473    o Enable tangent linear (forward mode) gradient checks:
474      - extended active file handling to g_... files
475      - added TANGENT_SIMULATION to theSimulationMode
476      - extended grdchk package accordingly
477    o added tangent linear setup in verification/carbon/code_ftl
478    o added adjoint setup in verification/front_relax/code_ad
479    
480    checkpoint46e_post
481    o Added new equation of state -> MDJWF
482      - EOS of McDougall et al., 2002, JAOT, submitted
483      - caveat: the equation of state is only valid for a smaller (more
484        realistic?) range of values than JMD95P/Z and UNESCO
485      - added masks to the calculation of pressure in store_pressure
486      - added more check values for density in check_eos (ini_eos.F), some of
487        the old check values are out of the range of the MDJWF-eos, so don't
488        expect perfect matches for those
489    checkpoint46e_pre
490    
491    checkpoint46d_post
492    o fixed store_pressure to work with both buoyancy relation = 'OCEANIC' and
493      'OCEANICP', also initialised field pressure correctly in ini_eos in the
494      case of pressure coordinates. eosType='JMD95Z' in
495      combination with buoyancyRelation='OCEANICP' now causes an error.
496    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
497      in find_alpha/beta.
498    checkpoint46d_pre
499    
500    o Changed p = pressure(i,j,k,bi,bj)  to  p = pressure(i,j,kRef,bi,bj)
501      so that JMD95Z and JMD95P give approptiate static stability in find_rho.
502    
503    checkpoint46c_post
504    o Changes necessary for ocean in p-coordinates
505     -  Added new buoyancy relation = 'OCEANICP'
506     -  Added new parameters = gravitySign (this used to be contained inside
507        the factor dRdZ which I added when we first switched to R coordinates).
508     X GM/Redi is not compatible (yet)
509     X bottom drag and no-slip need to be debugged.
510    checkpoint46c_pre
511    
512    checkpoint46b_post
513    o Added new equation of state -> JMD95Z and JMD95P
514      - EOS of Jackett and McDougall, 1995, JAOT
515      - moved all EOS parameters into EOS.h
516      - new routines ini_eos.F, store_pressure.F
517    o Added UNESCO EOS, but not recommended because it requires
518      in-situ temperature (see JMD95)
519    o Modified formatting for knudsen2.f in utils/knudsen2 and added
520      unesco.f to be used with POLY3
521    checkpoint46b_pre
522    
523    checkpoint46a_post
524    o Added (atmospheric) pressure loading
525      - new field in FFIELDS.h, etc...
526      - new cpp flag ATMOSPHERIC_LOADING
527    o Changed hFacC to _hFacC in calc_phi_hyd.F
528    o Added SHORTWAVE_HEATING to some files for consistency
529    checkpoint46a_pre
530    
531    checkpoint46
532    further merges from release1_p5
533    o new ctrl package
534      - adopted from ECCO environment to enable optimization
535      - added Eliassen Palm fluxes to controls
536    o added Eliassen Palm flux controls to gradient check package
537    o cost package
538      - Compatible with new ctrl package
539      - added Eliassen Palm cost hooks
540      - modif's of existing cost functions
541    o Adjoint-related bug fixes in kpp:
542      - kpp_calc: sore of kpphbl avoids recomputation/call to S/R kppmix
543      - kpp_routines: store of Rib avoids partial recomputation bug of TAF.
544    o autodiff package
545      - flow directives:
546        + new for S/R do_the_model_io
547        + enhanced for S/R checkpoint
548        + new gmredi.flow
549      - Introduced CPP option ALLOW_AUTODIFF_MONITOR to
550        disable adcommon.h/g_common.h by default.
551      - fixed problem for adjoint of global_max
552    o modified verification/carbon/
553    o New setup for adjoint of global_ocean
554    o added hooks for Eliassen Palm fluxes (dynamics.F, ini_fields.F)
555    o cleaned TAF keys iikey, idkey (dynamics.F, thermodynamics.F)
556    o incorporated hooks for sponge layer code (external_forcing.F)
557    
558    checkpoint45d_post
559    o import 2 fixes from release1_p5 (CG2D.h & packages_readparms.F)
560    o use recip_dx*,recip_dy* instead of /dx*,/dy* in orlanski_E,W,N,S
561      (affects plume_on_slope "cg2d" output)
562    o add new parameter deltaTfreesurf for free-surface time stepping
563    o exchange gT,gS when using staggerTimeStep & GM & Oly<4
564    o NONLIN_FRSURF: rescale gNm1 to get a better conservation with A-B
565    o change phiMin in exp1 (to agree with documentation)
566    o add new flags:
567     - T,S forcing inside/outside Adams-Bashforth
568     - turn off temp,salt advection and/or forcing
569     - for each tracer, define internal flag for multiDimAdvection & A-B
570    o monitor: change definition of KE to check conservation of Energy
571    
572    checkpoint45c_post
573    o Removed f90 comments ("!")
574    o Modified initialisations to enable exf package for MITgcm
575      (without invoking ECCO_PACKAGE).
576    o modifications to gradient check package (Martin Losch)
577      - enable centered differences
578      - modified format of standard output
579    
580    checkpoint45b_post
581    o cleaned exchange calls in cg2d
582    o Included CPP option ALLOW_AUTODIFF_MONITOR in forward_step
583    o included CPP option SINGLE_LAYER_MODE in thermodynamics
584      to configure barotropic setup (Martin Losch)
585    o moved some initialisations within bi,bj loop in dynamics
586      (TAF flow dependency)
587    o in initialise_varia, moved call packages_init_variables
588      before convective_adjustment_init
589      (corresponding adjustment of TAF tape initialisation).
590    o in calc_diffusivity/calc_viscosity extended domain to full overlap.
591    
592    checkpoint45a_post
593    o compute Rho over the whole domain (extend iMin,jMin indices)
594    o specific exchange for X-slice domain (case Ny=1)
595    o argument futureIter of S/R obcs_calc missing in exp4 & internal_wave /code
596    o solve_for_pressure : set cg2d_x to zero where OBCS are applied
597    
598    checkpoint44h_post = checkpoint45
599    o Fix to restore differentiability:
600      place at which packages_init_variables is called in
601      initialise_varia is crucial for reverse control flow.
602    o modifications in GMRedi to enable stable adjoint
603      (corresponding modif's in thermodynamics, dynamics)
604    o added missing hook for sponge layer code in external_forcing
605    o modified test cost functions
606    o storing in gad_advection (plus removal of write(0,*)!
607    o missing headers TR1.h added in convective_adjustment routines
608    o errorMessageUnit set non-equal zero in eeboot
609      (conflict on some platforms, e.g. IBM SP3)
610    o modified carbon verif.
611    
612    checkpoint44h_pre
613    o vertical grid option: allow to put the Interface at the middle between
614      2 cell-centers ; replace delZ in pkg/kpp by drF.
615    o GM Advective form: Tracers are advected using the residual transport (=
616      Euler+GM-bolus); set param GM_AdvSeparate=T to return to previous form.
617    
618    checkpoint44g_post
619    o fix surface correction term in multiDimAdvection (affects plume_on_slope
620      results) ; ifdef missing in thermodynamics.F
621    
622    checkpoint44f_pre,checkpoint44f_post
623    o added PTRACERS package
624      This allows an arbitrary number of passive tracers to be integrated
625      forward simultaneously with the dynamicaly model.
626      + Implemented so far:
627        - basic forward algorithm (time-stepping, advection, diffusion, convection)
628        - I/O and checkpointing
629        - GM/Redi  *but*  using the GM/Redi coefficient of Salt
630      + Not implemented so far:
631        - KPP
632        - OBCS
633      + No specific example supplied (yet) but global_ocean.90x40x15 has the
634        necessary data.ptracer file. Simply use -enable=ptracers and uncomment
635        line in data.pkg.
636      + This package is disabled by default since it increases storage.
637    
638    
639    o testscript: added -cleanup option
640    o Shap_filt: a) new shap_filt S/R to use no-slip BC with S2 filter
641                 b) enable to filter 2D fields.
642    
643    checkpoint44e_pre,post
644    o re-wrote convective adjustment to use pre-calculated weights
645      Affects: model/src/convective_adjustment.F, convective_adjustment_ini.F
646      Adds:    model/src/convective_weights.F, convectively_mixtracer.F
647      Original calls to convect() still in place.
648    
649    chkpt44d_pre,post
650    o added missing EXCLUDE_MONITOR flags
651    o changed "e" to "_d" in gmredi_slope_limit, gmredi_slope_psi
652      (incompatible typ in MIN/MAX expressions caused problems
653      on IBM SP3)
654    o in genmake added variable MAKEDEPEND
655      plus resetting for case SunOS
656    o added timer_stats.c routine for IBM SP3
657    o removed variables in dynamics
658    !!! I forgot to create tag chkpt44d_pre !!!
659    !!! But chkpt44d_pre = chkpt44c_post    !!!
660    
661    o real fresh water flux implemented with non-linear free-surface.
662    
663    chkpt44c_pre,post
664    o few fix (mask in shap_s2, EmPmR in external_field_load,
665      USE_NATURAL_BCS in solve_for_P);
666    o add arguments myIter & myTime to S/R obcs_calc & solve_for_P
667    
668    checkpoint44b_pre/_post
669    o merge of relevant stuff from the ecco-branch:
670      - genmake: removed $S64 overwrite for case SunOS
671      - pkg/exf: update and corrections for field swapping and obcs
672      - pkg/ecco: parameter lists for the_model_main, the_main_loop
673                  harmonized between ECCO and MITgcm
674      - pkg/autodiff: added flow directives for obcs, mdsio_gl_slice
675                      updated checkpointing_lev... lists for obcs
676      - model/src: minor changes in forward_step, plot_field
677                   added directive for divided adjoint in the_main_loop
678      - pkg/mdsio: added mdsio_gl_slice
679    
680    o check parameters & config (chkpt44a_pre,post)
681    o OBC and NonLin_FrSurf.
682    
683    checkpoint44
684    o fix bug in mom_vi_del2uv
685    o select when filters are applied ; add options to zonal_filter (data.zonfilt)
686    o gmredi: fix Pb in the adiabatic form ; add options (.e.g. Bolus advection)
687    o update AIM experiments (NCEP input files)
688    o improve and extend diagnostics (Monitor, TimeAve with NonLin-FrSurf)
689    o added some stuff for AD
690    
691    checkpoint43
692    o added two new advection tests
693    o added global 4x4 degree ocean test
694    o added test of H&S94 with free surface on cube
695    o some final mods for gradient check, adjoint,...
696    
697    checkpoint42
698      Fixed AD-related problems:
699    o Store directives up-to-date with re-arranged Adams-Bashforth
700      (mainly thermodynamics.F)
701    o New store directives for multi-dim. advection schemes
702      * new CPP flag ALLOW_MULTI_DIM_ADVECTION
703      * new common block and key passkey
704      (mainly gad_advection.F)
705    o Modified store directives for split of dynamics/thermodynamics
706      for the case ALLOW_KPP
707    o Cleaned argument list for timestep_tracer.F
708    
709    checkpoint41
710    o re-formatted/added comments in prologues of key subroutines
711      to work with protex
712    
713    checkpoint40
714    o moved calc_gs, calc_gt and calc_tr1 back to model/src
715    o added FLT (floats) package from Arne along with demo. experiment
716    o re-arranged Adams-Bashforth scheme for tracers to allow easier
717      implementation of forward-in-time forcing terms
718    o more mods for non-linear free-surface including new variable
719    o modified multi-dim method to work on cube
720    o bug fix in KPP (from DM)
721    
722    checkpoint40pre9
723    o added DST advection schemes
724    o fix MPI bug on SGI's
725    o modifications for non-linear free-surface
726    o fixed conditionals for fixed flow/passive tracer only mode
727    o added tension/strain form of stress tensor
728    o changes to commenting of arguments for TAF/TAMC
729    o added/updated many matlab scripts
730    o added multi-dimensional advection method for tracers
731      
732    checkpoint40pre8
733    o new package rw/
734      Added method for dumping intermediate local arrays:
735      mdsio_writetile - same as mdsio_writefield except works from inside
736                        bi,bj loop
737      mdsio_writelocal - same as mdsio_writetile except works for local
738                         arrays
739      write_local_r? - higher-level wrapper for mdsio_writelocal
740      Controlled by diagFreq. Defaults to zero (ie. no dumps)
741      Example given at end of mom_vecinv.F that dumps some local arrays.
742    o replaced calc_mom_rhs.F by mom_fluxform.F/mom_vecinc.F to
743      control flux-form versus vector invariant code.
744      Switch is runtime flag vectorInvariantMomentum (defaults to false)
745      or genmake -DISABLE ...
746    o TAMC-related update to cope with mom_fluxform.F/mom_vecinc.F
747      (additional storing is now needed for case vecinv;
748      currently nothing implemented to switch this storing off
749      in case fluxform is used since no CPP flag available).
750    
751    checkpoint40pre7
752    o bug fix in dynamics.F
753      calc_viscosity called before k=1,Nr loop.
754    o added some #ifdef's ALLOW_PASSIVE_TRACER
755    o cleaned initialisations in ctrl_map_ini
756      related to TAF
757    
758    checkpoint40pre6
759    o split dynamics into thermodynamics & dynamics
760    o corresponding split of calc_diffusivity into
761      calc_diffusivity, calc_viscosity
762      (kpp_calc_diff, kpp_calc_visc).
763    o Added diffkr, kapgm to control variables
764    o bug fix in gmredi_slope_limit for ldd97
765    
766    checkpoint40pre5
767    o proper initialization of Adams-Bashforth time stepping
768      + uses forward step for very first step of model (iter=0)
769    o re-generated *all* output since almost all output is modified by this
770      change (sorry but we've been putting this one off for about 2 years)
771      + natl_box, aim.5l_Equatorial_Channel and aim.5l_zon-ave were
772        *not* regenerated since they are already out of date and I don't
773        want to create the impression that they are suddenly working.
774    o removed KAP stuff for DEC's
775    o modified/added many .cvsignore files in */code and */input
776    o added new expt "solid-body.cs-32x32x1"
777      + this uses an alternative form of ini_curvilinear_grid.F which
778        is not necessarily any better than the current one...
779    
780    checkpoint40pre4
781    o added re-initialisations of utrans,vtrans,rtrans in
782      calc_common_factors which are crucial for TAF.
783    o extended iMin,jMin range for calc_common_factors,
784      calc_diffusivity
785    o added option ALLOW_PASSIVE_TRACER
786    o a few minor updates and fixes
787    
788    checkpoint40pre3
789    o created calc_gtr1.F for gad package
790    o split the_main_loop and re-introduced forward_step
791    o some recomputations of nIter0 for TAMC
792    
793    checkpoint40pre2
794    o Updated to latest branch of AJA, JMC
795    o Added gradient check package
796    o Added routines for passive tracer handling
797    o Added carbon sequestration sensitivity experiment
798    
799    checkpoint39
800     o Modifications and fixes to support TAMC
801       (mainly missing or wrong directives)
802     o Corrected common blocks when fooling TAMC to produce adjoint I/O
803       in addummy_in_stepping
804     o Updated verification/vero/ (bug fixes in code/, correct pickups in input/)
805     o Enabled "sliced" (xz-,yz-) exchanges, needed for obcs.
806     o Included following packages:
807       cal: calendar
808       exf: external forcing
809       ecco: essential routines to control use of cal, exf
810             (NB: this is not the full ECCO environment)
811     o disabled some packages by default in genmake
812    
813    checkpoint38
814     o see notes_c37_adj.txt
815     o corrected wrong layer index in external_forcing_t
816     o replaced the_main_loop/forward_step by the_main_loop
817     o removed forceoutput from write_state
818       (replaced criteria for initial/final state)
819     o added runtime flag for pre-C35 pickups: usePickupBeforeC35
820    
821    checkpoint37
822     o mdsio.F routine split and packaged in pkg/mdsio
823       (mdsio.F and mdsio_gl.F still exist in eesupp/src but are not
824        used unless genmake -disable=mdsio)
825     o allow a more precise surface-geopotential gradient for the atmosphere
826       taking into account the change in space of Alpha (=1/rho) at the surface.
827     o variable "etaN" (replace cg2d_x) is the surface R-anomaly [r unit]
828       (ocean: sea surface height [m] / atmos: surface pressure anomaly [Pa])
829     o Change units: Phi_Hydrostatic (=phiHyd), Phi_Surface(=cg2d_x) and
830       Phi_NonHydrostatic (=cg3d_x), all have now the dimension of a potential
831       [m2/s2] (pressure/rhoConst in the ocean ; Geo-Potential in the atmosphere).
832     o Time-Average diagnostics defined as a pseudo package "timeave".
833     o pickup files : old pickup (before c35) did not work with new code (c35
834       and after) unless activating 2 commented lines in initialise-varia.
835     o Non-Hydrostatic pickup file Pb fixed.
836     o bug with Rigid-lid version (since c35) fixed.  
837    
838    checkpoint36
839     o implement Crank-Nickelson barotropic time-stepping
840     o recover Time-Average diagnostics
841     o fix Pb in checkpoint (PR#19)
842     o AIM become a standard package ; clean unused CPP_kees
843    
844    checkpoint35
845     o subtantial rewrite of dynamics.f
846     o allows staggered time-stepping
847     o packaged obcs, aim (Atmospheric Physics), zonal_filt, shap_filt
848     o added bottom drag (linear + quadratic)
849    
850    checkpoint34
851     o Modified exchange routines for correct reverse simulation.
852     o Added verification output to comply with bug fix in impldiff.F
853       as of c33 (exp2, natl_box).
854     o Corrected store directives in dynamics.F
855     o Corrected array boundaries in impldiff.F
856     o Corrected array dimensions in gmredi.
857       Added temporary scalars to avoid storage by TAMC (gmredi, kpp).
858     o Added routine GLOBAL_SUM_INT to global_sum.F
859     o Added mdsio_gl.F for ECCO purposes.
860    
861    checkpoint33
862     o Fixed bug in lower BC in impldiff.F
863     o Fixed confusion about units of forcing arrays in FFIELDS.h
864       namely Fu,Fv,Qnet,Qsw,EmPmR:
865       - Removed verification/natl_box/code/external_fields_scale.F
866         (did not differ from that in model/src)
867       - Changed units of fu,fv,Qnet,Qsw,EmPmR back to proper units
868         (see FFIELDS.h for description)
869       - Scale fu,fv,Qnet,Qsw,EmPmR when used in external_forcing_surf.F,
870         kpp_calc.F and kpp_transport_t.F
871       - Removed model/src/external_fields_scale.F and calls to it
872       - verification/natl_box uses flux data with "atmospheric" sign so
873         a special version of external_fields_load.F is used to
874         change the data as it's read in. This way, the arrays
875         have the right units and signs at all times tha a user could
876         possibly use them.
877     o Corrected genmake to delete a temporary file during configuration
878    
879    checkpoint32
880     o Scaling of forcing fields moved from external_forcing.F to
881       external_fields_scale.F, called directly after loading fields.
882     o Surface relaxation terms added to surface tendency fields in
883       extra subroutine.
884     o impldiff.F changed to avoid storing by TAMC of huge intermediate
885       fields.
886     o Changes in GMRedi to comply with packaging structure.
887     o Modifications and bug fixes in KPP package.
888     o Verification experiment for KPP added (verification/nat_box/)
889    
890    checkpoint31
891     o Packages interface brought in line with defined standard
892       -> new routines packages_...F
893       -> changes in initialise_fixed.F, initialise_varia.F
894       -> enables initialisation interface for ECCO package
895     o Rescaling of external forcing fields immediately after read
896       (removed from external_forcing.F)
897       -> new: surface_fields_scale.F
898       -> affects ini_foorcing.F, external_fields_load.F
899     o Computation of surface tendencies before tendency updates.
900       -> new: external_forcing_surf.F
901     o Change of variable names useGMRedi, useKPP, useECCO
902     o Further changes in dynamics.F, impldiff.F for TAMC
903     o Tested for experiments 0, 2, 4.
904       - not yet tested for GMRedi.
905       - not yet tested for KPP.
906    
907    checkpoint30
908     o Updates for OBCs
909     o New experiment for test OBCs (internal_wave)
910     o New output.txt in verification/exp4/results/
911     o Updates for KPP: calculation of viscosity corrected, new variables
912       kpp_dumpFreq and kpp_taveFreq
913     o CPP'd calls to system routines for TARGET_CRAY_VECTOR (P.H.)
914       and entry for T90 in genmake
915    
916    checkpoint29
917     o packaged KPP and GM/Redi
918    
919    checkpoint28
920     o Corrected initialization of hFacMin for difference vertical coordinates
921     o Modified calculation of partial cell thickness to more robust algorithm
922     o config_summary.F: replaced write_1D_... by write_0D_...
923       read_write.F: added subroutines write_0D_...
924     o routines calc_common_factors, calc_gs, calc_gt, calc_phi_hyd, find_rho:
925       included some initialisations required for TAMC.
926     o routine calc_isoslopes: modified sqrt computation to make it
927       differentiable for zero argument.
928     o routines dynamics, impldiff:
929       included store directives and tape key computations required for TAMC.
930     o ALL TAMC related changes are between ifdef ALLOW_AUTODIFF_TAMC
931    
932    checkpoint27
933     o fixed calc_isoslopes() to so that cancellation of terms in tensor
934       formulation works properly with variable resolution.
935     o restructured the calling tree between the_model_main() and dynamics()
936     o split initialise() into initialise_fixed() and initialise_varia()
937     o introduced initialization file pSurfInitFile for free surface (cg2d_x)
938       in new routine ini_psurf()
939    
940    checkpoint26
941     o moved some #ifdef in optional routines to encompass everything
942       except the argument declarations. This was using up some memory.
943     o fixed macros like _ADT to work with both versions of Linux cpp
944     o cleaned up some unused and uninitialized variables
945       (helps when debugging with strict compile options)
946     o split up CPP_EEOPTIONS.h into options and macros
947       (macros are now in eesupp/inc/CPP_EEMACROS.h)
948     o patch for 2 processor JAM mode
949    
950    checkpoint25
951     o updates for OBCs and NH
952     o dramatically reduced memory usage
953     o added "JAM" routines for use on Artic network
954     o parameterization of convection by implicit vertical diffusion
955     o added a diagnostic of convective index
956     o moved call to calc_divg_hat() from dynamics() to solve_for_pressure()
957       (this is was partly for OBCs and NH but also in anticipation of
958        an explicit free-surface option)
959     o initial state input files for U and V
960    
961  checkpoint24  checkpoint24
962   o Removed some spurious "REAL"s   o Removed some spurious "REAL"s
963   o Updated KPP to latest version from JPL   o Updated KPP to latest version from JPL

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