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revision 1.1407 by jmc, Thu Apr 14 22:23:58 2011 UTC revision 1.1515 by jmc, Fri Oct 21 14:20:23 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:
8      - add parenthesis in Water-Ice drag calculations (evp & lsr);
9      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
10        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
11      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
12        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
13    o pkg/layers:
14      - Include potential density as new coordinate (Thanks to David Munday)
15    o pkg/dic:
16      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
17        carbonate computation/output to CALC_PCO2_APPROX
18    o model/src:
19      - improve vectorization also for adjoint code of
20        solve_tridiagonal and solve_pentadiagonal. As this requires up to
21        5 new 3D-fields, this code is only turned on for the combination of
22        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX.
23      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
24        ALLOW_AUTODIFF. This flag now needs to be set outside of
25        solve_tri/pentadiagonal.F
26    o pkg/exf:
27      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
28        optional namelist EXF_NML_OBCS).
29      - add many debug-print (to trace down where pkg/cal error msg comes from)
30    o pkg/mom_vecinv/mom_vi_hdissip.F
31      - rearrange loops so that vectorization is improved and in particular
32        the adjoint routine vectorizes. The code is a little longer now, but I
33        think easier to read.
34        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
35    o pkg/seaice:
36      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
37    o pkg/exch2:
38      - alternative code (without tile x tile matrix) for cumulated (global) sum;
39        used as default; keep using matrix version in adjustment.cs-32x32x1.
40    o tools/build_options:
41      - after merging some MPI and/or multi-threads specific optfiles so that
42        the modified default optfile support both built (using genmake2 -mpi
43        for the MPI built, using genmake2 -omp for OpenMP built),
44        move now obsolete optfiles to tools/build_options/unsupported/
45       (add copy of email sent to support list in doc/optfiles_changes.txt)
46    
47    checkpoint63c (2011/09/28)
48    o pkg/ebm:
49      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
50        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
51    o pkg/seaice (SItracer pickup)
52    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
53      To be done:
54      - thorough testing of missing fields in S/R seaice_read_pickup
55      - thorough matching between generic tracers and specific fields used
56        (e.g. volume-weighted age, area-weighted age, salinity, ...)
57    o pkg/grdchk:
58      - all procs calculate and print finite-difference gradient (for testreport)
59      - change description output used by testreport;
60      - AD testing: also compare and report Finite-difference gradient;
61        => update all output_adm*.txt
62    o test exp. global_ocean_ebm:
63      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
64        and turn on exactConserve; update (fwd) output.
65    o pkg/seaice (LSR):
66      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
67      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
68        * identical results with non-CS topology (but save up to half of EXCH calls)
69        * no much changes in cs-32 verification tests since no ice at face edges
70         (differences due to convergence criteria, since nb of iterations changed)
71        * expect some differences on lat-lon-cap grid.
72        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
73    o pkg/exch2:
74      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
75        many tiles); until alternative coding is added, just add a stop.
76    o pkg/kpp:
77      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
78        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
79    o optfiles:
80      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
81        into corresponding standard one, which now support different build:
82        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
83      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
84    o pkg/obcs (seaice):
85      - add missing EXCH for uIce,vIce after applying OBCS;
86      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
87        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
88        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
89      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
90      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
91        and eedata.mth for MPI and mutlti-threaded testing.
92    o pkg/flt:
93      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
94      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
95      - fix pickup and trajectories + profiles output with multi-threads;
96      - add parameter to select group of fields to write along trajectory and
97        profile (default unchanged);
98      - only call PORT_RAND* function when flt_noise <> 0;
99      - add multi-threaded test for verification exp. flt_example.
100    o eesupp/src:
101      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
102      - USE_OMP_THREADING: check that number of threads (from eedata) matches
103        actual number (from env.var. setting).
104    o pkg/ebm:
105      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
106      - add multi-threaded test for verification exp. global_ocean_ebm
107    
108    checkpoint63b (2011/08/29)
109    o pkg/ebm:
110      - fix sign of runoff;
111      - update directly forcing fields (Qnet,EmPmR) to use standard
112        external_forcing_surf.F (remove ebm_forcing_surf.F);
113      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
114      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
115        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
116      - update global_ocean_ebm parameters file data and update output (fwd+ad).
117    o verification/matrix_example:
118      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
119        MPI and mutlti-threaded testing.
120    o pkg/matrix:
121      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
122      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
123      - fix for multi-threaded (remove DATA statement);
124      - use standard DIFFERENT_MULTIPLE function;
125      - add MATRIX_OPTIONS.h
126    o verification/matrix_example:
127       To allow to split the domain in several tiles, change the domain size
128        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
129        Western side) of land points.
130    o (*_)write_pickup:
131      - fix few bugs in mypackage_read/write_pickup.F
132      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
133        array of length 1 (was caught by compiler syntax-check).
134    o pkg/diagnostics (velocity potential solver):
135      - fix initialisation of main diagonal matrix (for overlap values)
136    o tools/build_options:
137      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
138        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
139      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
140        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
141        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
142        and use "-devel" testreport option for standard testing on baudelaire.
143    o pkg/grdchk:
144      - Assume that all gradient-check position are within the same tile
145        corresponding to global indices (iGloTile,jGloTile) and that
146        positions (i,j indices or nbeg) are local to this tile;
147      - set tile local-indices and proc. number according to tile global-indices;
148      - remove grdchkwhichproc from namelist (retired param);
149      - send adjoint gradient to all procs so that all procs print it to STDOUT;
150      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
151    o adding package bbl (Bottom Boundary Layer)
152      description in MITgcm/pkg/bbl/bbl_description.tex
153      example/test experiment in MITgcm_contrib/bbl
154    o adjoint verifications
155      - changed 5 experiments to multi-tiles
156        * global_ocean.90x40x15
157        * obcs_ctrl
158        * offline_exf_seaice
159        * tutorial_dic_adjoffline
160        * tutorial_tracer_adjsens
161        changed reference output for those that crossed tile boundaries
162        (changed choices of gradient check positions)
163      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
164      - temporary bug fix in grdchk_loc.F for obcs
165    o genmake2 & testreport
166      - add target "obj" (just for OBJFILES files) to Makefile;
167      - add option to specify FEXTRAFLAGS on command line.
168    o pkg/mypackage:
169      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
170    
171    checkpoint63a (2011/08/02)
172    o pkg/diagnostics (velocity potential):
173      - fix velocity-potential calculation when using OBCS: balance net inflow
174        at each level (new S/R OBCS_DIAG_BALANCE).
175      - fix some of the problems with OBCS in stream-function calculation.
176    o pkg/exf/exf_readparms.F
177      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
178        EXF_NML_OBCS) more consistent, so that you need not have these lists
179        in data.exf when they are not used.
180    o optim/optim_readdata.F:
181      - add some output about obcs variables that might help debugging
182      - add a check about nvarlength
183    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
184    o pkg/diagnostics (velocity potential):
185      - fix mask for OBCS (still problems in stream-function with OBCS);
186      - add specific parameter (default = main code CG2D params) for solver;
187      - in case of poor convergence, use solution corresponding to lowest residual.
188    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
189      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
190      and should be avoided where possible.
191    o model/src (rStar):
192      - include r* effect on reference-state (PhiRef) in totPhiHyd
193        (so that it's really the potential anomaly at the cell center);
194        affect solution only if z* with full pressure in EOS.
195      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
196        update output (because of z* in totPhiHyd and viscA4 changes);
197      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
198        @ constant r) until interpolation at constant r is implemented.
199    o pkg/diagnostics
200      - fix RCENTER diagnostics in case cell center is not at interface middle
201    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
202      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
203      that THETA and SALT are "conservative temperature" and "absolute
204      salinity"
205    o pkg/ctrl
206      - fix computation of endrec in s/r ctrl_init_rec
207      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
208    o pkg/seaice/seaice_growth.F
209      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
210        remove then obsolete STORE directives
211      - fix STORE directives for tice and tices, so that only the
212        appropriate part of the fields are stored (and not the entire
213        field); update global_ocean.cs32x15.seaice AD output.
214      - cosmetic changes: adjust CPP flags and indentation for better
215        legibilty
216    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
217      Chris Wilson)
218    o pkg/gmredi:
219       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
220       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
221    
222    checkpoint63  (2011/07/11)
223    o pkg/exch2:
224     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
225     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
226       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
227       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
228    o pkg/diagnostics:
229     - deal with pairs of post-processed diags which are computed together; in
230       particular, re-order list of diags within 1 file to save 2nd computation.
231     - add S/R to compute velocity stream-function (called after velocity-potential
232       calculation) from divergence free transport -> new diagnostics "PsiVEL".
233     - add parameter to select grid-point location where PsiVEL == 0.
234    o eesupp/src:
235       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
236       (specific S/R needed with exch2 topology - for now, just print an error msg)
237    o pkg/shelfice
238     - Implement friction velocity-dependent transfer coefficients following
239       Holland and Jenkins, JPO, 1999
240       Original code by M. Losch with small modifs.
241       Enable with CPP option SHI_ALLOW_GAMMAFRICT
242       and runtime flag SHELFICEuseGammaFrict
243    o verification lab_sea & global_ocean.cs32x15:
244     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
245       does not miss some dependencies (but is slower) and also works with many files
246       (default makedepend limitation for AD built).
247     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
248    o pkg/diagnostics:
249     - add run-time parameter "useMissingValue" (def=False) to fill land-point
250        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
251       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
252     - Extend the use of "missing_value" setting from data.diagnostics for the case
253       of counter-diagnostics (where fraction-weight is zero). This applies both to
254       MNC and MDS output files.
255    o pkg/seaice/seaice_growth.F:
256      - add 'a priori' cap of latent heat flux based on actual mass considerations
257        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
258        non-legacy seaice_solve4temp.
259      - add diagnostic of the residual sublimation freshwater flux (the freshwater
260        flux taken from the ocean if the total actual latent heat fluxes exceed
261        the maximum)
262      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
263       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
264      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
265       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
266      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
267      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
268    o verification 1D_ocean_ice_column:
269       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
270       update results
271    o pkg/diagnostics:
272     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
273       which are not filled-up but computed from other diags ; In this case, the mate
274       diag points to the primary (filled-up) diag to used for post processing.
275     - Update Velocity-potential computation using post-processed diag framework.
276     ==> Change the ordering of fields and time-periods in MDS output file
277       when using periodic averaging: now writes one time record with the full set
278       of fields for this time period, then the next time reccord (it used to be
279       one field with the full set of time records then the next field).
280         Note: this is now similar to NetCDF (MNC) output file. <==
281    
282    checkpoint62z (2011/06/21)
283    o adjoint monitor:
284     - Add adjoint monitor output for packages exf, seaice
285       and update relevant testreport output
286    o pkg/seaice:
287     - re-order diags inits so that they appear in order in available_diagnostics.log
288     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
289       area/heff/hsnow preceeding thermodynamic growth/melt.
290     - modified diag: SIdA; output actual effect, as the description states.
291     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
292     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
293       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
294        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
295     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
296     - added diagnostics for seaice generic tracers (SItr*).
297     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
298     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
299     I. Fenty: 18-Jun-2011:
300     Minor changes to seaice package:
301     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
302        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
303       - Differentiated "regularization variables" from "floor variables"
304        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
305        * hiceMin became SEAICE_hice_reg (old hiceMin)
306          (with _reg meaning regularization variable)
307       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
308        so as to ensure energy conservation when going between phases
309      - A22 was not used anywhere
310     2) Changed regularization procedure for heffActual and hsnowActual to ensure
311        well-boundedness and smooth adjoint in seaice_growth.F
312     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
313        because the old regularization always set heffActual >= 0.05 cm
314     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
315        on AREA when HEFF > 0.
316      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
317        requiring that DISABLE_AREA_FLOOR *not* be defined
318     Affected verifications:
319      - 1D_ocean_ice_column (output.txt output_adm.txt)
320      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
321    o pkg/diagnostics:
322      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
323      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
324        (was _RL, now integer) with option = 0 to retrieve all levels.
325      - add pieces of code to compute velocity potential at each level (new diagnostics
326        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
327        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
328      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
329        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
330        and in diagnostics_fract_fill.F (do not need a valid pointer for the
331        diagnostics counter-mate); check that definition of counter-diagnostic
332        includes a valid counter-mate (in diagnostics_set_levels.F).
333    o model/src (rStar):
334      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
335        affect solution only if z* with full pressure in EOS;
336        update output of test-exp global_ocean.90x40x15.
337    o pkg/seaice:
338      - introduce siEps=1e-5 parameter
339      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
340      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
341      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
342        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
343        as well as ice cover age and ridging index (attached to AREA).
344        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
345        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
346        Up to SItrMaxNum=3 tracers can be used simultaneously.
347    o pkg/salt_plume:
348      -introduce SPsalFRAC run time parameter that sets the fraction of the
349       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
350       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
351    o model debug options:
352      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
353        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
354      - Refine debug-msg printing selection (3 new levels):
355        debugMode  : controls printing of debug messages (sequence of S/R calls).
356        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
357         debLevZero =  0 ; /* level of disabled aux. msg printing */
358         debLevA =  1 ; /* level of minimum  aux. msg printing */
359         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
360         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
361         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
362         debLevE =  5 ; /* level of extensive debug printing */
363        New debugLevel default: with default debugMode value (=F),
364          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
365          and if debugMode=T, default debugLevel = 4 (debLevD).
366        Relation with previous settings:
367         debLevB (=2) corresponds to former debLevA (=1)
368         debLevD (=4) corresponds to former debLevB (=2)
369        Note:
370         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
371         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
372            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
373      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
374        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
375    o pkg/obcs:
376      - change OBCSfixTopo default from True to False (should not change the results);
377        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
378    o pkg/thsice:
379      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
380        2nd layer seaice sublimation (unlikely to happen)
381      - use Interior mask for OBCS in thsice_advection.F (similar to what is
382        done in gad_advection & seaice_advection).
383    o adjoint:
384      bug fix spotted by Gael Forget:
385      seaice_advection and thsice_advection still had
386      legacy CPP options to avoid CS corner updates for adjoint
387    o pkg/seaice:
388      => Change some of the defaults (2011/05/29):
389         - change SEAICEuseFluxForm default (from False to True)
390         - change DIFF1 default (from 0.004 m/s to 0. m/s)
391         And print warnings if DIFF1 is not set in data.seaice and centered
392          avection scheme is used without any diffusion.
393      also:
394      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
395      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
396      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
397        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
398        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
399      update results of test exp.:
400         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
401             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
402             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
403         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
404         seaice_obcs: output (SEAICEuseFluxForm=T)
405      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
406          for standard fwd & AD lab_sea tests (to keep the same output).
407    o pkg/seaice/seaice_growth.F:
408      - use Ian Fenty's capping formulas for actual ice
409      thickness thoughout EVOLUTION branch.
410      - put treatment pathological case #2) in CPP brackets
411      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
412      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
413    o pkg/seaice:
414      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
415      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
416      also pass fac as a param, which can be 1. (to update the tendency
417      field) or the time step (to update the field itself).
418      - seaice_advdiff.F: for multidim, call seaice_diffusion with
419      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
420      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
421      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
422      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
423    o pkg/seaice:
424      diffusion with centered advection scheme (diffus.F & advect.F):
425      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
426        to just compute the laplacian of input-field.
427      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
428      - fix flux-form version in diffus.F to conserve tracer.
429      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
430       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
431    
432    checkpoint62y (2011/05/26)
433    o pkg/seaice:
434     - seaice_growth.F : in EVOLUTION branch, always include
435       a_QSWbyATM_cover in qnet (as it should be).
436     - verification/global_ocean.cs32x15 : update results accordingly
437       (output.seaice.txt output_adm.seaice.txt).
438    o pkg/seaice + obcs:
439     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
440       equivalent of assuming no tracer gradient outside the OB region.
441       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
442     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
443       after changes above);
444     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
445       only at OB location (instead of over a band of OLx width).
446    o pkg/seaice:
447     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
448       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
449    o pkg/obcs:
450      - split header file "OBCS.h" into 4 separated files:
451        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
452       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
453         (contain no conditional statement which depends on OBCS options).
454      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
455        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
456    o ctrl, cost, grdchk & autodiff pkgs:
457      - make options file more standard (like other {PKG}_OPTIONS.h file but
458        with AD_CONFIG.h); clean-up some of the included header files.
459    o pkg/obcs:
460      - do not mask tracer when applying OB (tracer == 0 could generate problems)
461      - apply tracer OB values to tracer field only at OB location (instead of
462        over a band of OLx width)
463      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
464      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
465        obcs_apply_tloc.F & obcs_apply_sloc.F
466    o obcs in model/src:
467      - call OBCS_APPLY_W only if NonHydrostatic.
468      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
469      - reset dEtaHdt and wVel to zero outside OB interior region ;
470      - leave tracer unchanged outside OB interior region: This has no effect
471        on the solution but just to prevent unrealistic tracer value outside OB.
472      - zero out velocity outside OB interior region: This has no effect on
473        the solution but just to prevent unrealistic velocity outside OB.
474    o obcs and non-lin free-surf:
475       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
476       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
477       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
478       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
479       update results of test-exp. exp4(nlfs).
480    o exp4 (nlfs) test-exp:
481       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
482       with NonLin-FreeSurf); update output.nlfs.txt
483    o obcs and 2d/3d solver norm:
484       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
485       and outside OB interior region (will allow to place OB further inside the
486       domain). Depending on the domain, can affects cg2d-Norm (previous
487       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
488       and cg3d-Norm (previous Norm was computed before canceling OB terms),
489       e.g. in tutorial_plume_on_slope.
490      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
491    o pkg rbcs:
492      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
493      - add capability to apply relaxation to horizontal velocity uVel & vVel.
494    o pkg/grdchk: add gradient check for control variable xx_shifwflx
495    o pkg/shelfice/shelfice_init_fixed.F
496      fix CPP-flag combinations
497    o pkg/seaice: Merge iceage code of Pierre Rampal
498      * update/change/correct ice age calculations
499      * add age updates for pathological cases
500      Probably needs more testing...
501    
502    checkpoint62x (2011/05/13)
503    o pkg/mom_vecinv:
504       high-order vorticity scheme: use interior masks (maskInW & S)
505       to zero-out (outside OB) gradient of vorticity.
506    o verification exp.:
507       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
508       hs94.128x64x5 and seaice_obcs ; update results.
509    o pkg/obcs:
510      fix bug in OBeta for YZ sections in obcs_exf_load.F
511    o pkg/ctrl, pkg/shelfice, and optim:
512      - add new control variable xx_shifwflx (fresh water flux underneath ice
513        shelves). This is almost as tedious as obcs-ctrl, because the
514        variables needs its own mask.
515      - add a cost function term that penalizes the deviation of xx_shifwflx
516        from the first guess (zero) in analogy to other control variables
517    o pkg/shelfice:
518      - start basic adjoint
519    o pkg/ctrl:
520      - remove extra 2D field "for good measure" when initializing in
521        ctrl_set_globfld_[xy/xz/yz].F
522      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
523      - improve error messages in ctrl_set_unpack_*
524    o OBC implementation in momentum:
525       use interior masks (maskInC,W & S) in momentum S/R:
526       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
527       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
528       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
529       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
530       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
531        (and also with Leith/Smagorinsky harmonic-viscosity).
532       Update output of experiment dome and exp4 (+nlfs).
533    o exp4 test-exp:
534      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
535        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
536        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
537        time-varying OB at Western-side for wVel (NonHyd); update output.
538      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
539        and biharmonic-viscosity ; also use prescribed time varying OB.
540    o pkg/obcs:
541      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
542    o model/src:
543      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
544      - initialise startTime & nIter0 with unlikely values: allows to set one
545        from the other without ambiguity.
546    o seaice_obcs test-exp.:
547      add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
548    o pkg/obcs:
549      - remove calls to OBCS_COPY_TRACER after EXCH for T,S & pTracer:
550        no longer needed with maskInC,W,S in pkg/generic_advdiff.
551    o pkg/seaice:
552      - retired SEAICE_SALINITY and SEAICE_salinity in favor of
553        SEAICE_VARIABLE_SALINITY and SIsalFRAC, respectively.
554      - fixed bug in the initialization of sea ice salinity variable HSALT
555        in seaice_init_varia.F  (removed dependence on ICE2WATR)
556    o fizhi-cs test exp.:
557       switch reference output convention for these 2 non-standard test-exp,
558        from: pgi  6.1-5 on faulks (FC.6, -of linux_ia32_pgf77+authors_fc5)
559          to: ifort 11.1 on baudelaire (FC.13, -of linux_amd64_ifort11)
560       reason: faulks might get retired soon and pkg/fizhi has still Pb with gfortran
561    o model/inc:
562      - change type of PmEpR array (from _RS to _RL) to fix restart (with "-use_r4")
563        of exp. global_ocean.90x40x15 (Suncronous time-stepping + Real-FW + NonLin-FS)
564    o pkg/seaice:
565      - fix calculation of saltFlux and saltPlumeFlux when using SEAICE_SALINITY
566    o verification/lab_sea, 1D_ocean_ice_column, seaice_obcs, global_ocean.cs32x15
567      - updated output*.txt files due to bug fixes in salt, saltPlumeFlux,
568        and initial HSALT
569    
570    checkpoint62w (2011/04/26)
571    o pkg/mom_fluxform:
572      - fix calculation of del2u & del2v (no-slip BC) when using Non-Lin Free-Surf.
573      - use parameter "sideDragFactor" in no-slip BC side-drag part.
574      - update output of exp. global_ocean.90x40x15
575    o pkg/mom_vecinv:
576      mask del2u & del2v (no effect on results, but cleaner & closer to mom_fluxform)
577    o update seaice exp.:
578      use more consistent parameter values (remove "backward compatability only":
579       ICE2WATR, SEAICE_lhSublim, SEAICE_cpAir, SEAICE_rhoAir + set rhoConstFresh)
580      related to thermodynamics seaice. Update output (fwd+AD) of exp.:
581       1D_ocean_ice_column (x2), lab_sea (x8), ioffline_exf_seaice (x2) & seaice_obcs
582    o update test-exp global_ocean.90x40x15:
583      o use default CD_CODE_OPTIONS file (Adams-Bashforth on CD Mom & Coriolis).
584      o increase Overlap size from 2 to 3 (to allow to test bi-harmonic Visc.)
585      o new pickup-files from a 100.yr run with pkg/down_slope (input.dwnslp params)
586      o turn on zStar & viscA4 in standard set-up (dir input/)
587        and update output files: output.txt & output.dwnslp.txt
588    o new AD-test experiment: obcs_ctrl
589      (From Matt MITgcm_Contrib/SOSE/BoxAdj) to test OBCS as control vector.
590    o pkg/dic:
591      fix two bugs in handling water vapour pressure in carbonate chemistry
592      and air-sea fluxes. Found by Val Bennington and Galen McKinley
593      (add DIC Option = WATERVAP_BUG to recover old results)
594      update output of tutorial_global_oce_biogeo (fwd+AD) & tutorial_dic_adjoffline
595    o adding allowInteriorFreezing option to check for water below freezing point
596      at depth and bring the negative heat anomaly to the surface level
597    o pkgs _fields_load:
598      - extend GET_PERIODIC_INTERVAL to deal with non-periodic case (from pkg/rbcs)
599      - use new S/R GET_PERIODIC_INTERVAL in pkgs:
600        bulk_force, cheapaml, cfc, dic, obcs (+ ctrl/ctrl_get_gen_rec), offline and
601        rbcs to get interpolation weights and time reccord number.
602      - fix multi-threading in aim_fields_load.F
603      - apply EXCH to temp arrays [0,1] after reading in dic_fields_load.F
604  o external_fields_load:  o external_fields_load:
605    new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear    new S/R GET_PERIODIC_INTERVAL to calculate which time-record (and linear
606     interpolation weights) to use in a periodic time-series ; do not divide by     interpolation weights) to use in a periodic time-series ; do not divide by

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