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revision 1.1423 by jmc, Tue May 3 20:43:57 2011 UTC revision 1.1526 by heimbach, Mon Oct 31 03:41:38 2011 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    o pkg/seaice adjoint of LSR:
8      - substantially rework STORE dirs.
9      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
10        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
11        and only perform SOLV_MAX_FIXED adjoint iters.
12        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
13        always goes to same record, meaning that the last forward field will be
14        the one used in the adjoint - an approximation.
15      - now produces non-zero LSR-related gradients, and acceptable gradients for
16        An's zonal (x-z) test case (to be checked in)
17      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
18        (but these are screwed up by the thermodynamics in the first place);
19        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
20        output_adm.txt also reflects changes to seaice_lsr
21      - global_ocean.cs32x15:
22        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
23          (output_adm.seaice.txt was updated)
24        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
25          (output_adm.seaice_dynmix.txt)
26    o test-exp. exp4+stevens:
27      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
28    o pkg/seaice (lsr solver):
29      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
30        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
31      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
32      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
33        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
34      - compute (with new S/R) and print initial (+ free-driff sol. if available)
35        and final residual of linearised system.
36    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
37      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
38    o pkg/obcs: Stevens BCs (still only for east and west)
39      - fix Stevens BCs by using intermediate velocities of previous
40        time step as "baroclinic" contribution rather velocity of one grid cell
41        inside the boundaries; more consistent but makes the entire treatment
42        more complicated, requires new pickup files and two new S/Rs:
43        obcs_copy_uv_n and obcs_save_uv_n
44        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
45        (undefined by default)
46      - silently move computation of some grid factors into separate loops to
47        save some recomputations
48      - add a hack for non-linear free surface
49      - add a verification experiment to exp4 that tests this code
50    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
51    
52    checkpoint63d (2011/10/25)
53    o pkg/obcs + seaice-dynamics:
54      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
55        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
56        values (consistent with an implicit method).
57      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
58        return to older implementation (same results as before); note that none of
59        the "experimental" OBCS_SEAICE options are implemented in the new version.
60      - switch test exp. seaice_obcs to use new version (update output).
61    o pkg/seaice:
62      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
63      - add parenthesis in Water-Ice drag calculations (evp & lsr);
64      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
65        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
66      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
67        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
68    o pkg/layers:
69      - Include potential density as new coordinate (Thanks to David Munday)
70    o pkg/dic:
71      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
72        carbonate computation/output to CALC_PCO2_APPROX
73    o pkg/generic_advdiff
74      - make TAF generate code that vectorizes:
75        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
76    o model/src:
77      - improve vectorization also for adjoint code of
78        solve_tridiagonal and solve_pentadiagonal. As this requires up to
79        5 new 3D-fields, this code is only turned on for the combination of
80        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
81        for singular matrix check (only for TARGET_NEC_SX).
82      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
83        ALLOW_AUTODIFF. This flag now needs to be set outside of
84        solve_tri/pentadiagonal.F
85    o pkg/exf:
86      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
87        optional namelist EXF_NML_OBCS).
88      - add many debug-print (to trace down where pkg/cal error msg comes from)
89    o pkg/mom_vecinv/mom_vi_hdissip.F
90      - rearrange loops so that vectorization is improved and in particular
91        the adjoint routine vectorizes. The code is a little longer now, but I
92        think easier to read.
93        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
94    o pkg/seaice:
95      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
96    o pkg/exch2:
97      - alternative code (without tile x tile matrix) for cumulated (global) sum;
98        used as default; keep using matrix version in adjustment.cs-32x32x1.
99    o tools/build_options:
100      - after merging some MPI and/or multi-threads specific optfiles so that
101        the modified default optfile support both built (using genmake2 -mpi
102        for the MPI built, using genmake2 -omp for OpenMP built),
103        move now obsolete optfiles to tools/build_options/unsupported/
104       (add copy of email sent to support list in doc/optfiles_changes.txt)
105    
106    checkpoint63c (2011/09/28)
107    o pkg/ebm:
108      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
109        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
110    o pkg/seaice (SItracer pickup)
111    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
112      To be done:
113      - thorough testing of missing fields in S/R seaice_read_pickup
114      - thorough matching between generic tracers and specific fields used
115        (e.g. volume-weighted age, area-weighted age, salinity, ...)
116    o pkg/grdchk:
117      - all procs calculate and print finite-difference gradient (for testreport)
118      - change description output used by testreport;
119      - AD testing: also compare and report Finite-difference gradient;
120        => update all output_adm*.txt
121    o test exp. global_ocean_ebm:
122      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
123        and turn on exactConserve; update (fwd) output.
124    o pkg/seaice (LSR):
125      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
126      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
127        * identical results with non-CS topology (but save up to half of EXCH calls)
128        * no much changes in cs-32 verification tests since no ice at face edges
129         (differences due to convergence criteria, since nb of iterations changed)
130        * expect some differences on lat-lon-cap grid.
131        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
132    o pkg/exch2:
133      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
134        many tiles); until alternative coding is added, just add a stop.
135    o pkg/kpp:
136      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
137        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
138    o optfiles:
139      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
140        into corresponding standard one, which now support different build:
141        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
142      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
143    o pkg/obcs (seaice):
144      - add missing EXCH for uIce,vIce after applying OBCS;
145      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
146        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
147        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
148      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
149      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
150        and eedata.mth for MPI and mutlti-threaded testing.
151    o pkg/flt:
152      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
153      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
154      - fix pickup and trajectories + profiles output with multi-threads;
155      - add parameter to select group of fields to write along trajectory and
156        profile (default unchanged);
157      - only call PORT_RAND* function when flt_noise <> 0;
158      - add multi-threaded test for verification exp. flt_example.
159    o eesupp/src:
160      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
161      - USE_OMP_THREADING: check that number of threads (from eedata) matches
162        actual number (from env.var. setting).
163    o pkg/ebm:
164      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
165      - add multi-threaded test for verification exp. global_ocean_ebm
166    
167    checkpoint63b (2011/08/29)
168    o pkg/ebm:
169      - fix sign of runoff;
170      - update directly forcing fields (Qnet,EmPmR) to use standard
171        external_forcing_surf.F (remove ebm_forcing_surf.F);
172      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
173      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
174        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
175      - update global_ocean_ebm parameters file data and update output (fwd+ad).
176    o verification/matrix_example:
177      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
178        MPI and mutlti-threaded testing.
179    o pkg/matrix:
180      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
181      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
182      - fix for multi-threaded (remove DATA statement);
183      - use standard DIFFERENT_MULTIPLE function;
184      - add MATRIX_OPTIONS.h
185    o verification/matrix_example:
186       To allow to split the domain in several tiles, change the domain size
187        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
188        Western side) of land points.
189    o (*_)write_pickup:
190      - fix few bugs in mypackage_read/write_pickup.F
191      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
192        array of length 1 (was caught by compiler syntax-check).
193    o pkg/diagnostics (velocity potential solver):
194      - fix initialisation of main diagonal matrix (for overlap values)
195    o tools/build_options:
196      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
197        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
198      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
199        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
200        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
201        and use "-devel" testreport option for standard testing on baudelaire.
202    o pkg/grdchk:
203      - Assume that all gradient-check position are within the same tile
204        corresponding to global indices (iGloTile,jGloTile) and that
205        positions (i,j indices or nbeg) are local to this tile;
206      - set tile local-indices and proc. number according to tile global-indices;
207      - remove grdchkwhichproc from namelist (retired param);
208      - send adjoint gradient to all procs so that all procs print it to STDOUT;
209      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
210    o adding package bbl (Bottom Boundary Layer)
211      description in MITgcm/pkg/bbl/bbl_description.tex
212      example/test experiment in MITgcm_contrib/bbl
213    o adjoint verifications
214      - changed 5 experiments to multi-tiles
215        * global_ocean.90x40x15
216        * obcs_ctrl
217        * offline_exf_seaice
218        * tutorial_dic_adjoffline
219        * tutorial_tracer_adjsens
220        changed reference output for those that crossed tile boundaries
221        (changed choices of gradient check positions)
222      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
223      - temporary bug fix in grdchk_loc.F for obcs
224    o genmake2 & testreport
225      - add target "obj" (just for OBJFILES files) to Makefile;
226      - add option to specify FEXTRAFLAGS on command line.
227    o pkg/mypackage:
228      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
229    
230    checkpoint63a (2011/08/02)
231    o pkg/diagnostics (velocity potential):
232      - fix velocity-potential calculation when using OBCS: balance net inflow
233        at each level (new S/R OBCS_DIAG_BALANCE).
234      - fix some of the problems with OBCS in stream-function calculation.
235    o pkg/exf/exf_readparms.F
236      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
237        EXF_NML_OBCS) more consistent, so that you need not have these lists
238        in data.exf when they are not used.
239    o optim/optim_readdata.F:
240      - add some output about obcs variables that might help debugging
241      - add a check about nvarlength
242    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
243    o pkg/diagnostics (velocity potential):
244      - fix mask for OBCS (still problems in stream-function with OBCS);
245      - add specific parameter (default = main code CG2D params) for solver;
246      - in case of poor convergence, use solution corresponding to lowest residual.
247    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
248      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
249      and should be avoided where possible.
250    o model/src (rStar):
251      - include r* effect on reference-state (PhiRef) in totPhiHyd
252        (so that it's really the potential anomaly at the cell center);
253        affect solution only if z* with full pressure in EOS.
254      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
255        update output (because of z* in totPhiHyd and viscA4 changes);
256      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
257        @ constant r) until interpolation at constant r is implemented.
258    o pkg/diagnostics
259      - fix RCENTER diagnostics in case cell center is not at interface middle
260    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
261      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
262      that THETA and SALT are "conservative temperature" and "absolute
263      salinity"
264    o pkg/ctrl
265      - fix computation of endrec in s/r ctrl_init_rec
266      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
267    o pkg/seaice/seaice_growth.F
268      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
269        remove then obsolete STORE directives
270      - fix STORE directives for tice and tices, so that only the
271        appropriate part of the fields are stored (and not the entire
272        field); update global_ocean.cs32x15.seaice AD output.
273      - cosmetic changes: adjust CPP flags and indentation for better
274        legibilty
275    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
276      Chris Wilson)
277    o pkg/gmredi:
278       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
279       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
280    
281    checkpoint63  (2011/07/11)
282    o pkg/exch2:
283     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
284     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
285       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
286       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
287    o pkg/diagnostics:
288     - deal with pairs of post-processed diags which are computed together; in
289       particular, re-order list of diags within 1 file to save 2nd computation.
290     - add S/R to compute velocity stream-function (called after velocity-potential
291       calculation) from divergence free transport -> new diagnostics "PsiVEL".
292     - add parameter to select grid-point location where PsiVEL == 0.
293    o eesupp/src:
294       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
295       (specific S/R needed with exch2 topology - for now, just print an error msg)
296    o pkg/shelfice
297     - Implement friction velocity-dependent transfer coefficients following
298       Holland and Jenkins, JPO, 1999
299       Original code by M. Losch with small modifs.
300       Enable with CPP option SHI_ALLOW_GAMMAFRICT
301       and runtime flag SHELFICEuseGammaFrict
302    o verification lab_sea & global_ocean.cs32x15:
303     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
304       does not miss some dependencies (but is slower) and also works with many files
305       (default makedepend limitation for AD built).
306     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
307    o pkg/diagnostics:
308     - add run-time parameter "useMissingValue" (def=False) to fill land-point
309        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
310       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
311     - Extend the use of "missing_value" setting from data.diagnostics for the case
312       of counter-diagnostics (where fraction-weight is zero). This applies both to
313       MNC and MDS output files.
314    o pkg/seaice/seaice_growth.F:
315      - add 'a priori' cap of latent heat flux based on actual mass considerations
316        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
317        non-legacy seaice_solve4temp.
318      - add diagnostic of the residual sublimation freshwater flux (the freshwater
319        flux taken from the ocean if the total actual latent heat fluxes exceed
320        the maximum)
321      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
322       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
323      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
324       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
325      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
326      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
327    o verification 1D_ocean_ice_column:
328       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
329       update results
330    o pkg/diagnostics:
331     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
332       which are not filled-up but computed from other diags ; In this case, the mate
333       diag points to the primary (filled-up) diag to used for post processing.
334     - Update Velocity-potential computation using post-processed diag framework.
335     ==> Change the ordering of fields and time-periods in MDS output file
336       when using periodic averaging: now writes one time record with the full set
337       of fields for this time period, then the next time reccord (it used to be
338       one field with the full set of time records then the next field).
339         Note: this is now similar to NetCDF (MNC) output file. <==
340    
341    checkpoint62z (2011/06/21)
342    o adjoint monitor:
343     - Add adjoint monitor output for packages exf, seaice
344       and update relevant testreport output
345    o pkg/seaice:
346     - re-order diags inits so that they appear in order in available_diagnostics.log
347     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
348       area/heff/hsnow preceeding thermodynamic growth/melt.
349     - modified diag: SIdA; output actual effect, as the description states.
350     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
351     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
352       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
353        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
354     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
355     - added diagnostics for seaice generic tracers (SItr*).
356     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
357     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
358     I. Fenty: 18-Jun-2011:
359     Minor changes to seaice package:
360     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
361        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
362       - Differentiated "regularization variables" from "floor variables"
363        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
364        * hiceMin became SEAICE_hice_reg (old hiceMin)
365          (with _reg meaning regularization variable)
366       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
367        so as to ensure energy conservation when going between phases
368      - A22 was not used anywhere
369     2) Changed regularization procedure for heffActual and hsnowActual to ensure
370        well-boundedness and smooth adjoint in seaice_growth.F
371     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
372        because the old regularization always set heffActual >= 0.05 cm
373     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
374        on AREA when HEFF > 0.
375      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
376        requiring that DISABLE_AREA_FLOOR *not* be defined
377     Affected verifications:
378      - 1D_ocean_ice_column (output.txt output_adm.txt)
379      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
380    o pkg/diagnostics:
381      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
382      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
383        (was _RL, now integer) with option = 0 to retrieve all levels.
384      - add pieces of code to compute velocity potential at each level (new diagnostics
385        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
386        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
387      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
388        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
389        and in diagnostics_fract_fill.F (do not need a valid pointer for the
390        diagnostics counter-mate); check that definition of counter-diagnostic
391        includes a valid counter-mate (in diagnostics_set_levels.F).
392    o model/src (rStar):
393      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
394        affect solution only if z* with full pressure in EOS;
395        update output of test-exp global_ocean.90x40x15.
396    o pkg/seaice:
397      - introduce siEps=1e-5 parameter
398      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
399      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
400      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
401        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
402        as well as ice cover age and ridging index (attached to AREA).
403        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
404        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
405        Up to SItrMaxNum=3 tracers can be used simultaneously.
406    o pkg/salt_plume:
407      -introduce SPsalFRAC run time parameter that sets the fraction of the
408       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
409       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
410    o model debug options:
411      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
412        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
413      - Refine debug-msg printing selection (3 new levels):
414        debugMode  : controls printing of debug messages (sequence of S/R calls).
415        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
416         debLevZero =  0 ; /* level of disabled aux. msg printing */
417         debLevA =  1 ; /* level of minimum  aux. msg printing */
418         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
419         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
420         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
421         debLevE =  5 ; /* level of extensive debug printing */
422        New debugLevel default: with default debugMode value (=F),
423          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
424          and if debugMode=T, default debugLevel = 4 (debLevD).
425        Relation with previous settings:
426         debLevB (=2) corresponds to former debLevA (=1)
427         debLevD (=4) corresponds to former debLevB (=2)
428        Note:
429         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
430         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
431            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
432      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
433        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
434    o pkg/obcs:
435      - change OBCSfixTopo default from True to False (should not change the results);
436        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
437    o pkg/thsice:
438      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
439        2nd layer seaice sublimation (unlikely to happen)
440      - use Interior mask for OBCS in thsice_advection.F (similar to what is
441        done in gad_advection & seaice_advection).
442    o adjoint:
443      bug fix spotted by Gael Forget:
444      seaice_advection and thsice_advection still had
445      legacy CPP options to avoid CS corner updates for adjoint
446    o pkg/seaice:
447      => Change some of the defaults (2011/05/29):
448         - change SEAICEuseFluxForm default (from False to True)
449         - change DIFF1 default (from 0.004 m/s to 0. m/s)
450         And print warnings if DIFF1 is not set in data.seaice and centered
451          avection scheme is used without any diffusion.
452      also:
453      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
454      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
455      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
456        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
457        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
458      update results of test exp.:
459         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
460             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
461             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
462         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
463         seaice_obcs: output (SEAICEuseFluxForm=T)
464      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
465          for standard fwd & AD lab_sea tests (to keep the same output).
466    o pkg/seaice/seaice_growth.F:
467      - use Ian Fenty's capping formulas for actual ice
468      thickness thoughout EVOLUTION branch.
469      - put treatment pathological case #2) in CPP brackets
470      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
471      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
472    o pkg/seaice:
473      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
474      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
475      also pass fac as a param, which can be 1. (to update the tendency
476      field) or the time step (to update the field itself).
477      - seaice_advdiff.F: for multidim, call seaice_diffusion with
478      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
479      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
480      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
481      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
482    o pkg/seaice:
483      diffusion with centered advection scheme (diffus.F & advect.F):
484      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
485        to just compute the laplacian of input-field.
486      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
487      - fix flux-form version in diffus.F to conserve tracer.
488      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
489       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
490    
491    checkpoint62y (2011/05/26)
492    o pkg/seaice:
493     - seaice_growth.F : in EVOLUTION branch, always include
494       a_QSWbyATM_cover in qnet (as it should be).
495     - verification/global_ocean.cs32x15 : update results accordingly
496       (output.seaice.txt output_adm.seaice.txt).
497    o pkg/seaice + obcs:
498     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
499       equivalent of assuming no tracer gradient outside the OB region.
500       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
501     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
502       after changes above);
503     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
504       only at OB location (instead of over a band of OLx width).
505    o pkg/seaice:
506     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
507       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
508    o pkg/obcs:
509      - split header file "OBCS.h" into 4 separated files:
510        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
511       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
512         (contain no conditional statement which depends on OBCS options).
513      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
514        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
515    o ctrl, cost, grdchk & autodiff pkgs:
516      - make options file more standard (like other {PKG}_OPTIONS.h file but
517        with AD_CONFIG.h); clean-up some of the included header files.
518    o pkg/obcs:
519      - do not mask tracer when applying OB (tracer == 0 could generate problems)
520      - apply tracer OB values to tracer field only at OB location (instead of
521        over a band of OLx width)
522      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
523      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
524        obcs_apply_tloc.F & obcs_apply_sloc.F
525    o obcs in model/src:
526      - call OBCS_APPLY_W only if NonHydrostatic.
527      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
528      - reset dEtaHdt and wVel to zero outside OB interior region ;
529      - leave tracer unchanged outside OB interior region: This has no effect
530        on the solution but just to prevent unrealistic tracer value outside OB.
531      - zero out velocity outside OB interior region: This has no effect on
532        the solution but just to prevent unrealistic velocity outside OB.
533    o obcs and non-lin free-surf:
534       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
535       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
536       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
537       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
538       update results of test-exp. exp4(nlfs).
539    o exp4 (nlfs) test-exp:
540       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
541       with NonLin-FreeSurf); update output.nlfs.txt
542    o obcs and 2d/3d solver norm:
543       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
544       and outside OB interior region (will allow to place OB further inside the
545       domain). Depending on the domain, can affects cg2d-Norm (previous
546       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
547       and cg3d-Norm (previous Norm was computed before canceling OB terms),
548       e.g. in tutorial_plume_on_slope.
549      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
550    o pkg rbcs:
551      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
552      - add capability to apply relaxation to horizontal velocity uVel & vVel.
553    o pkg/grdchk: add gradient check for control variable xx_shifwflx
554    o pkg/shelfice/shelfice_init_fixed.F
555      fix CPP-flag combinations
556    o pkg/seaice: Merge iceage code of Pierre Rampal
557      * update/change/correct ice age calculations
558      * add age updates for pathological cases
559      Probably needs more testing...
560    
561    checkpoint62x (2011/05/13)
562    o pkg/mom_vecinv:
563       high-order vorticity scheme: use interior masks (maskInW & S)
564       to zero-out (outside OB) gradient of vorticity.
565    o verification exp.:
566       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
567       hs94.128x64x5 and seaice_obcs ; update results.
568    o pkg/obcs:
569      fix bug in OBeta for YZ sections in obcs_exf_load.F
570    o pkg/ctrl, pkg/shelfice, and optim:
571      - add new control variable xx_shifwflx (fresh water flux underneath ice
572        shelves). This is almost as tedious as obcs-ctrl, because the
573        variables needs its own mask.
574      - add a cost function term that penalizes the deviation of xx_shifwflx
575        from the first guess (zero) in analogy to other control variables
576    o pkg/shelfice:
577      - start basic adjoint
578    o pkg/ctrl:
579      - remove extra 2D field "for good measure" when initializing in
580        ctrl_set_globfld_[xy/xz/yz].F
581      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
582      - improve error messages in ctrl_set_unpack_*
583  o OBC implementation in momentum:  o OBC implementation in momentum:
584     use interior masks (maskInC,W & S) in momentum S/R:     use interior masks (maskInC,W & S) in momentum S/R:
585     - multiply divergence, tension and some del^i.u or del^j.v by maskInC     - multiply divergence, tension and some del^i.u or del^j.v by maskInC

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