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revision 1.1445 by gforget, Fri May 27 23:28:39 2011 UTC revision 1.1536 by mlosch, Thu Nov 17 13:17:41 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/seaice_init_varia.F
8      - undo resetting UVM=0 that has slipped in unnoticed in r1.49 and
9        caused zero ice-velocities for the B-grid code
10    o pkg/seaice/seaice_init_fixed.F
11      - fix a bug in the initialisation of the second metric terms
12        k2AtC and k2AtZ: k2AtC was set to the value of k2AtZ and k2AtZ was 0.
13      - this affects all seaice configurations with useCurviLinearGrid = .true.
14        and SEAICEuseDynamics = .true. (default) and SEAICEuseMetricTerms
15        = .true. (default)
16      - the only verification experiment affected is global_ocean.cs32x15:
17        icedyn, seaice, and seaice_dynmix (AD)
18    o pkg/thsice/thsice_diagnostics_state.F
19      - only for TARGET_NEC_SX: initialise all of tmpFld, so that overlap does
20        not contain garbage that can lead to surprises in diagstats_calc.F
21    o model/src:
22      - move bi,bj loops inside INTEGR_CONTINUITY ;
23      - call INTEGR_CONTINUITY directly from forward_step.F
24        (previously called from momentum_correction_step.F)
25      - call UPDATE_ETAH from integr_continuity.F and update initialise_varia.F,
26        forward_step.F and pkg/ecco/the_main_loop.F
27    o model/src/do_oceanic_phys.F:
28      - reset addMass to zero only if useICEFRONT ;
29      - separated k-loop for rhoInSitu calculation ;
30      - add 2 diagnostics for wVel*delta^k(Rho) at constant pressure (= WdRHO_P)
31        and at constant T,S (= WdRHOdP);
32      NOTE: change diagnostics WRHOMASS : this is now simply the Vertical transport
33        of In-Situ Density (Anomaly) (=wVel*rho^bar-k) (previously was Vertical
34        transport of locally-referenced potential density);
35        to recover old diag: (WRHOMASS)_old = (WRHOMASS)_new -1/2 * (WdRHOdP)
36    o gluemnc:
37      - replace ncrcat with ncks when adding variables to *.glob.nc
38      - change the way variables without record dimensions are handled so that
39        files that have variables with and without record variables can be glued:
40        add a record dimension with a new unique name to be able to differentiate
41        between variable with and without a-prior record dimensions. Remove
42        this record dimension before adding the variable to the *.glob.nc file.
43        This procedure automatically works also for grid.*.nc files that do not
44        have any record dimension.
45    o verification/cpl_aim+ocn:
46      - generate new reference output on baudelaire (gfortran, mpich2) (previously
47        from old aces-grid cluster, ao + ifort) and update 'run_cpl_test' script.
48    o pkg/obcs/obcs_calc_stevens.F:
49      - add code for northern and southern boundaries.
50      - reorder some loops to save some operations and so that drFBar can be scalar
51    o model/src:
52      - re-arrange extrapolation calculation in Adams-Bashforth S/R (affects machine
53        truncation) and add diagnostics for Adams-Bashforth tendency increment.
54      - update test-exp. AD output:
55        1D_ocean_ice_column, bottom_ctrl_5x5, lab_sea.noseaicedyn, obcs_ctrl;
56      and FWD output: exp4 (x3), fizhi-cs-32x32x40, fizhi-cs-aqualev20,
57        front_relax (x3), global_ocean.90x40x15 (x2), global_ocean.cs32x15 (x5),
58        global_ocean_ebm, ideal_2D_oce, internal_wave, isomip (x3), lab_sea (x4),
59        matrix_example, MLAdjust (x5), natl_box (x2), tutorial_advection_in_gyre,
60        tutorial_global_oce_in_p, tutorial_global_oce_latlon and
61        tutorial_plume_on_slope.
62    o pkg/diagnostics/diagstats_calc.F: add special code for TARGET_NEC_SX
63      that vectorises. This code uses 3 extra 2D fields, F90 array assignments
64      and F90 intrinsic routines SUM, MINVAL, MAXVAL, but since TARGET_NEC_SX
65      does not even come with an F77 compiler anymore, this should not be
66      a limitation
67    
68    checkpoint63e (2011/11/06)
69    o pkg/seaice adjoint of LSR:
70      - substantially rework STORE dirs.
71      - add new flag SEAICE_LSR_ADJOINT_ITER and parameter SOLV_MAX_FIXED
72        this flag will do SOLV_MAX_ITERS but only store SOLV_MAX_FIXED fields
73        and only perform SOLV_MAX_FIXED adjoint iters.
74        If flag SEAICE_LSR_ADJOINT_ITER is undef-ined, the store in the iteration
75        always goes to same record, meaning that the last forward field will be
76        the one used in the adjoint - an approximation.
77      - now produces non-zero LSR-related gradients, and acceptable gradients for
78        An's zonal (x-z) test case (to be checked in)
79      - lab_sea: produces acceptable gradients for lab_sea with forward/backward LSR
80        (but these are screwed up by the thermodynamics in the first place);
81        reduce from 4 to 3 timesteps to avoid t.d. issue as temporary solution;
82        output_adm.txt also reflects changes to seaice_lsr
83      - global_ocean.cs32x15:
84        * the "default" input_ad.seaice has been re-defined to always exclude dynamics
85          (output_adm.seaice.txt was updated)
86        * new input_ad.seaice_dynmix tests a forward LSR / backward free-drift
87          (output_adm.seaice_dynmix.txt)
88    o test-exp. exp4+stevens:
89      - switch off pTracers and nonHydrostatic (restart problems with NH); update output
90    o pkg/seaice (lsr solver):
91      - put coriolis term into FORCEX,Y (as in seaice_evp.F; previously in rhsU,V only);
92        update output (change truncation) of FWD test exp lab_sea & global_ocean.cs32x15
93      - fix SEAICEuseFREEDRIFT for new OBCS version (ndef OBCS_UVICE_OLD)
94      - new parameter "LSR_mixIniGuess" allows (if=2,4) to mix free-drift solution
95        into initial guess for linearised solver; use weight ~ (1/err)^2,4.
96      - compute (with new S/R) and print initial (+ free-driff sol. if available)
97        and final residual of linearised system.
98    o pkg/pp81: add diagnostics for vertical eddy viscosity and diffusivity
99      (requires new subroutines pp81_init_fixed.F/pp81_diagnostics_init.F)
100    o pkg/obcs: Stevens BCs (still only for east and west)
101      - fix Stevens BCs by using intermediate velocities of previous
102        time step as "baroclinic" contribution rather velocity of one grid cell
103        inside the boundaries; more consistent but makes the entire treatment
104        more complicated, requires new pickup files and two new S/Rs:
105        obcs_copy_uv_n and obcs_save_uv_n
106        keep old version with flag OBCS_STEVENS_USE_INTERIOR_VELOCITY
107        (undefined by default)
108      - silently move computation of some grid factors into separate loops to
109        save some recomputations
110      - add a hack for non-linear free surface
111      - add a verification experiment to exp4 that tests this code
112    o make gluemnc/xplodemnc work with (moron) non-GNU shell tools
113    
114    checkpoint63d (2011/10/25)
115    o pkg/obcs + seaice-dynamics:
116      - new implementation calls OBCS_APPLY_UVICE (in seaice_dynsolver.F) before
117        solving for uIce,vIce and prevent SEAICE_LSR or SEAICE_EVP to modify OB
118        values (consistent with an implicit method).
119      - add option OBCS_UVICE_OLD (in OBCS_OPTIONS.h, defined by default) to
120        return to older implementation (same results as before); note that none of
121        the "experimental" OBCS_SEAICE options are implemented in the new version.
122      - switch test exp. seaice_obcs to use new version (update output).
123    o pkg/seaice:
124      - add few stop (B-grid & CS-exch, B-grid & obcs, AUTODIFF & SEAICE_maskRHS)
125      - add parenthesis in Water-Ice drag calculations (evp & lsr);
126      - in seaice_lsr.F, simplify and fix AA3 setting in case sNx or sNy=1;
127        and fix case SEAICE_waterDrag=0 (but unstable if no or little seaice)
128      - update output of test exp lab_sea that uses evp or lsr (fwd+ad)
129        and global_ocean.cs32x15 (icedyn & seaice fwd+ad).
130    o pkg/layers:
131      - Include potential density as new coordinate (Thanks to David Munday)
132    o pkg/dic:
133      - Remove subroutine CALC_PCO2_APPROX_CO3 from carbon_chem.F and add
134        carbonate computation/output to CALC_PCO2_APPROX
135    o pkg/generic_advdiff
136      - make TAF generate code that vectorizes:
137        gad_dst3fl_adv_*.F, gad_u3c4_impl_r.F
138    o model/src:
139      - improve vectorization also for adjoint code of
140        solve_tridiagonal and solve_pentadiagonal. As this requires up to
141        5 new 3D-fields, this code is only turned on for the combination of
142        ALLOW_AUTODIFF_TAMC and TARGET_NEC_SX. Also remove error message
143        for singular matrix check (only for TARGET_NEC_SX).
144      - remove hard-wiring of CPP-flag ALLOW_SOLVERS_KLOOPINSIDE to
145        ALLOW_AUTODIFF. This flag now needs to be set outside of
146        solve_tri/pentadiagonal.F
147    o pkg/exf:
148      - fix previous modif in exf_readparms.F (revision 1.66: treatment of
149        optional namelist EXF_NML_OBCS).
150      - add many debug-print (to trace down where pkg/cal error msg comes from)
151    o pkg/mom_vecinv/mom_vi_hdissip.F
152      - rearrange loops so that vectorization is improved and in particular
153        the adjoint routine vectorizes. The code is a little longer now, but I
154        think easier to read.
155        Note: CPP-flag MOM_VI_ORIGINAL_VISCA4 is not tested.
156    o pkg/seaice:
157      - allow to specify initial seaice velocity from files (uIceFile,vIceFile)
158    o pkg/exch2:
159      - alternative code (without tile x tile matrix) for cumulated (global) sum;
160        used as default; keep using matrix version in adjustment.cs-32x32x1.
161    o tools/build_options:
162      - after merging some MPI and/or multi-threads specific optfiles so that
163        the modified default optfile support both built (using genmake2 -mpi
164        for the MPI built, using genmake2 -omp for OpenMP built),
165        move now obsolete optfiles to tools/build_options/unsupported/
166       (add copy of email sent to support list in doc/optfiles_changes.txt)
167    
168    checkpoint63c (2011/09/28)
169    o pkg/ebm:
170      - fix ebm_zonalmean.F for several procs in Ydir (nPy > 1); update output of
171        test exp. global_ocean_ebm (affects machine truncation, 12 digits for cg2d)
172    o pkg/seaice (SItracer pickup)
173    * Simple code for pickup of SItracer fields (#define ALLOW_SITRACER)
174      To be done:
175      - thorough testing of missing fields in S/R seaice_read_pickup
176      - thorough matching between generic tracers and specific fields used
177        (e.g. volume-weighted age, area-weighted age, salinity, ...)
178    o pkg/grdchk:
179      - all procs calculate and print finite-difference gradient (for testreport)
180      - change description output used by testreport;
181      - AD testing: also compare and report Finite-difference gradient;
182        => update all output_adm*.txt
183    o test exp. global_ocean_ebm:
184      - switch back useRealFreshWaterFlux (no problem anymore with run-off);
185        and turn on exactConserve; update (fwd) output.
186    o pkg/seaice (LSR):
187      - print to STDOUT number of solver iterations at SEAICE_monFreq interval.
188      - modify solver to deal cleanly with u/v switch at face edges (CS-grid):
189        * identical results with non-CS topology (but save up to half of EXCH calls)
190        * no much changes in cs-32 verification tests since no ice at face edges
191         (differences due to convergence criteria, since nb of iterations changed)
192        * expect some differences on lat-lon-cap grid.
193        update FWD results of global_ocean.cs32x15 test exp. (icedyn & seaice)
194    o pkg/exch2:
195      - add new CPP option to disable Cumul-Sum matrix (to save storage when using
196        many tiles); until alternative coding is added, just add a stop.
197    o pkg/kpp:
198      - move ptracer/salt correction to KPP diffusivity from calc_3d_diffusivity.F
199        to S/R KPP_CALC_DIFF_PTR (+ add tracer-index to argument list).
200    o optfiles:
201      - merged few MPI specific (*+mpi*) and multi-threads specific (*+mth) optfiles
202        into corresponding standard one, which now support different build:
203        (when using "genmake2 -mpi" for MPI built, "genmake2 -omp" for OpenMP built)
204      - add "darwin_amd64_gfortran" optfile (initially from Constantinos, tested by Gael)
205    o pkg/obcs (seaice):
206      - add missing EXCH for uIce,vIce after applying OBCS;
207      - remove S/R EXF_SWAPFFIELDS_X/Y , disable S/R EXF_SET_OBCS_X/Y by adding
208        argument = number of levels to S/R EXF_SWAPFFIELDS_XZ/YZ and S/R
209        EXF_SET_OBCS_XZ/YZ ; update obcs_exf_load.F;
210      - fix EXF_SET_OBCS_XZ/YZ for multi-threaded (assuming loaded arrays are shared)
211      - verification exp. seaice_obcs: split domain in 2 tiles ; add SIZE.h_mpi
212        and eedata.mth for MPI and mutlti-threaded testing.
213    o pkg/flt:
214      - make FLT EXCH working with multi-threads (and MPI + multi-threads);
215      - use buffer for floats IO (trajectories & profiles); size set in FLT_SIZE.h;
216      - fix pickup and trajectories + profiles output with multi-threads;
217      - add parameter to select group of fields to write along trajectory and
218        profile (default unchanged);
219      - only call PORT_RAND* function when flt_noise <> 0;
220      - add multi-threaded test for verification exp. flt_example.
221    o eesupp/src:
222      - fix S/R ALL_PROC_DIE for MPI+multi-threads.
223      - USE_OMP_THREADING: check that number of threads (from eedata) matches
224        actual number (from env.var. setting).
225    o pkg/ebm:
226      - fix multi-threading in ebm_area_t.F ; clean-up EBM.h header file.
227      - add multi-threaded test for verification exp. global_ocean_ebm
228    
229    checkpoint63b (2011/08/29)
230    o pkg/ebm:
231      - fix sign of runoff;
232      - update directly forcing fields (Qnet,EmPmR) to use standard
233        external_forcing_surf.F (remove ebm_forcing_surf.F);
234      - avoid loading forcing fields a 2nd time (1rst time from ini_forcing.F);
235      - set either tauThetaClimRelax (in data) or tauThetaZonRelax (in data.ebm)
236        and apply relaxation towards corresponding SST field (2-D map or ZonAver).
237      - update global_ocean_ebm parameters file data and update output (fwd+ad).
238    o verification/matrix_example:
239      - split domain in 8 tiles (2x4); add SIZE.h_mpi and eedata.mth for
240        MPI and mutlti-threaded testing.
241    o pkg/matrix:
242      - change name of S/R MATRIX_INIT to S/R MATRIX_INIT_VARIA ;
243      - fix for multi-tiles (add bi,bj indices to exp/impMatrixCounter);
244      - fix for multi-threaded (remove DATA statement);
245      - use standard DIFFERENT_MULTIPLE function;
246      - add MATRIX_OPTIONS.h
247    o verification/matrix_example:
248       To allow to split the domain in several tiles, change the domain size
249        from 31x31 to 32x32 by adding 1 row (on Southern side) + 1 column (on
250        Western side) of land points.
251    o (*_)write_pickup:
252      - fix few bugs in mypackage_read/write_pickup.F
253      - in MDS_WR_METAFILES calls, replace "myTime" by a local copy into
254        array of length 1 (was caught by compiler syntax-check).
255    o pkg/diagnostics (velocity potential solver):
256      - fix initialisation of main diagonal matrix (for overlap values)
257    o tools/build_options:
258      - towards single optfile for MPI and non-MPI built: merge few +mpi optfile
259        into previously non MPI one (linux_am64 pgf77,open64,pathf90,ifort11)
260      - linux_amd64_gfortran: merge +mpi_generic version into standard optfile:
261        * move IEEE flags to DEVEL section; take IEEE flags from +mpi_generic ;
262        * FAST case: for now, keep -O3 with ini_masks_etc.F in NOOPTFILES list;
263        and use "-devel" testreport option for standard testing on baudelaire.
264    o pkg/grdchk:
265      - Assume that all gradient-check position are within the same tile
266        corresponding to global indices (iGloTile,jGloTile) and that
267        positions (i,j indices or nbeg) are local to this tile;
268      - set tile local-indices and proc. number according to tile global-indices;
269      - remove grdchkwhichproc from namelist (retired param);
270      - send adjoint gradient to all procs so that all procs print it to STDOUT;
271      - switch on MPI test for global_ocean.90x40x15 AD test experiment.
272    o adding package bbl (Bottom Boundary Layer)
273      description in MITgcm/pkg/bbl/bbl_description.tex
274      example/test experiment in MITgcm_contrib/bbl
275    o adjoint verifications
276      - changed 5 experiments to multi-tiles
277        * global_ocean.90x40x15
278        * obcs_ctrl
279        * offline_exf_seaice
280        * tutorial_dic_adjoffline
281        * tutorial_tracer_adjsens
282        changed reference output for those that crossed tile boundaries
283        (changed choices of gradient check positions)
284      - with same tiling, switch on MPI test for the last 4 (add SIZE.h_mpi)
285      - temporary bug fix in grdchk_loc.F for obcs
286    o genmake2 & testreport
287      - add target "obj" (just for OBJFILES files) to Makefile;
288      - add option to specify FEXTRAFLAGS on command line.
289    o pkg/mypackage:
290      - remove bi,bj arguments from argument list of S/R MYPACKAGE_CALC_RHS
291    
292    checkpoint63a (2011/08/02)
293    o pkg/diagnostics (velocity potential):
294      - fix velocity-potential calculation when using OBCS: balance net inflow
295        at each level (new S/R OBCS_DIAG_BALANCE).
296      - fix some of the problems with OBCS in stream-function calculation.
297    o pkg/exf/exf_readparms.F
298      - make treatment of optional namelists (EXF_NML_04, EXF_NML_SGRUNOFF,
299        EXF_NML_OBCS) more consistent, so that you need not have these lists
300        in data.exf when they are not used.
301    o optim/optim_readdata.F:
302      - add some output about obcs variables that might help debugging
303      - add a check about nvarlength
304    o pkg/ctrl: once again, fix computation of endrec in s/r ctrl_init_rec
305    o pkg/diagnostics (velocity potential):
306      - fix mask for OBCS (still problems in stream-function with OBCS);
307      - add specific parameter (default = main code CG2D params) for solver;
308      - in case of poor convergence, use solution corresponding to lowest residual.
309    o pkg/seaice/seaice_growth.F: small changes that permit vectorizable
310      adjoint code. In general statements like tmpscal=fld(i,j) are problematic
311      and should be avoided where possible.
312    o model/src (rStar):
313      - include r* effect on reference-state (PhiRef) in totPhiHyd
314        (so that it's really the potential anomaly at the cell center);
315        affect solution only if z* with full pressure in EOS.
316      - test-exp global_ocean.90x40x15: reduce viscA4 (was not stable) and
317        update output (because of z* in totPhiHyd and viscA4 changes);
318      - keep the previous diagnostics as "PHIHYDcR" (closer to potential anomaly
319        @ constant r) until interpolation at constant r is implemented.
320    o pkg/diagnostics
321      - fix RCENTER diagnostics in case cell center is not at interface middle
322    o add code for TEOS-10 (www.teos-10.org, McDougall et al. 2011). Use
323      this eos with eosType = 'TEOS10', in data (PARM01). This eos implies
324      that THETA and SALT are "conservative temperature" and "absolute
325      salinity"
326    o pkg/ctrl
327      - fix computation of endrec in s/r ctrl_init_rec
328      - ctrl_pack/unpack_*: remove unused variables and some obsolete code
329    o pkg/seaice/seaice_growth.F
330      - fix recomputation with FENTY_AREA_EXPANSION_CONTRACTION code,
331        remove then obsolete STORE directives
332      - fix STORE directives for tice and tices, so that only the
333        appropriate part of the fields are stored (and not the entire
334        field); update global_ocean.cs32x15.seaice AD output.
335      - cosmetic changes: adjust CPP flags and indentation for better
336        legibilty
337    o pkg/autodiff: add mnc-output of adBottomDragFld (code contributed by
338      Chris Wilson)
339    o pkg/gmredi:
340       Add Sub-Meso Eddies parameterisation from Baylor (for now, disabled with TAF),
341       and test it in verification exp. "front_relax.bvp" (update output.bvp.txt)
342    
343    checkpoint63  (2011/07/11)
344    o pkg/exch2:
345     - rename+move: nTiles in W2_EXCH2_PARAMS.h --> exch2_nTiles in W2_EXCH2_TOPOLOGY.h
346     - exch2 version of Cumul-Sum routine: S/R W2_SET_MAP_CUMSUM set up the
347       (2*nTiles)x(nTiles) Cumul-Sum matrix and Master Proc collects all tiles X,Y
348       increments, calculates Cumul-Sum @ tile origin and sends results to each tile.
349    o pkg/diagnostics:
350     - deal with pairs of post-processed diags which are computed together; in
351       particular, re-order list of diags within 1 file to save 2nd computation.
352     - add S/R to compute velocity stream-function (called after velocity-potential
353       calculation) from divergence free transport -> new diagnostics "PsiVEL".
354     - add parameter to select grid-point location where PsiVEL == 0.
355    o eesupp/src:
356       new S/R to calculate cumulated sum on tiled array, corner grid-cell location
357       (specific S/R needed with exch2 topology - for now, just print an error msg)
358    o pkg/shelfice
359     - Implement friction velocity-dependent transfer coefficients following
360       Holland and Jenkins, JPO, 1999
361       Original code by M. Losch with small modifs.
362       Enable with CPP option SHI_ALLOW_GAMMAFRICT
363       and runtime flag SHELFICEuseGammaFrict
364    o verification lab_sea & global_ocean.cs32x15:
365     - use tools/xmakedepend (instead of cyrus_makedepend, in genmake_local):
366       does not miss some dependencies (but is slower) and also works with many files
367       (default makedepend limitation for AD built).
368     - use cyrus_makedepend in adjustment.128x64x1 (so that it still tested).
369    o pkg/diagnostics:
370     - add run-time parameter "useMissingValue" (def=False) to fill land-point
371        (i.e., where mask=0) with MissingValue ; used only in MNC output file.
372       This replaces CPP-option DIAGNOSTICS_MISSING_VALUE.
373     - Extend the use of "missing_value" setting from data.diagnostics for the case
374       of counter-diagnostics (where fraction-weight is zero). This applies both to
375       MNC and MDS output files.
376    o pkg/seaice/seaice_growth.F:
377      - add 'a priori' cap of latent heat flux based on actual mass considerations
378        when SEAICE_ADD_SUBLIMATION_TO_FWBUDGET is used in conjunction with the
379        non-legacy seaice_solve4temp.
380      - add diagnostic of the residual sublimation freshwater flux (the freshwater
381        flux taken from the ocean if the total actual latent heat fluxes exceed
382        the maximum)
383      - remove the CPP switch around the *_FWbySublim unit change and move diagnostic
384       fill for SIatmQnt, SIfwSubl, SIatmFW to the end of seaice_growth.F.
385      - add diagnostic of the actual sublimation freshwater flux (that is 0. ifndef
386       SEAICE_ADD_SUBLIMATION_TO_FWBUDGET) and of the latent heat flux (evap+sublim).
387      - bug fix : frWtrAtm needs a_FWbySublim ifdef SEAICE_ADD_SUBLIMATION_TO_FWBUDGET.
388      - bug fix : missing part to Martin's r_FWbySublim pathological case fix.
389    o verification 1D_ocean_ice_column:
390       made model domain truly 1x1x23 instead of 5x5x23 with only center cell (3,3,:) wet
391       update results
392    o pkg/diagnostics:
393     - Implement setting of "Post-Processed" diagnostics (corresponding to gdiag(5)='P')
394       which are not filled-up but computed from other diags ; In this case, the mate
395       diag points to the primary (filled-up) diag to used for post processing.
396     - Update Velocity-potential computation using post-processed diag framework.
397     ==> Change the ordering of fields and time-periods in MDS output file
398       when using periodic averaging: now writes one time record with the full set
399       of fields for this time period, then the next time reccord (it used to be
400       one field with the full set of time records then the next field).
401         Note: this is now similar to NetCDF (MNC) output file. <==
402    
403    checkpoint62z (2011/06/21)
404    o adjoint monitor:
405     - Add adjoint monitor output for packages exf, seaice
406       and update relevant testreport output
407    o pkg/seaice:
408     - re-order diags inits so that they appear in order in available_diagnostics.log
409     - added diags: hsnow thermo. rates of change, area preceeding ridiging process,
410       area/heff/hsnow preceeding thermodynamic growth/melt.
411     - modified diag: SIdA; output actual effect, as the description states.
412     - modified description: SIqneti, SIqneto, SIuheff, SIvheff, SIdAb*, HSNOW.
413     - retired redundant diags: SIyneg, SIfice, SIsnwice, SIthdgrh.
414       (SIyneg->SIdHbOCN; SIfice->SIdHbATC; SIsnwice->SIdHbFLO;
415        and SIthdgrh->SIdHbOCN+SIdHbATC+SIdHbATO)
416     - modified diags (2) : switch all SIdA*, SIdH*, SIdS* from delta to rates.
417     - added diagnostics for seaice generic tracers (SItr*).
418     - added SItrUnit and SItrNameLong run time param (for SItr* diags).
419     - in diag names, replaced 'PrTh' abbrev. of 'preceeding thermo' with 'PT'.
420     I. Fenty: 18-Jun-2011:
421     Minor changes to seaice package:
422     1) Retired old variables (A22, SEAICE_lhsublim, areaMax, areaMin, hiceMin) and
423        added some new ones (SEAICE_area_reg, SEAICE_hice_reg, SEAICE_area_floor)
424       - Differentiated "regularization variables" from "floor variables"
425        * areaMin became SEAICE_area_reg (old A22) and SEAICE_area_floor
426        * hiceMin became SEAICE_hice_reg (old hiceMin)
427          (with _reg meaning regularization variable)
428       - SEAICE_lhSublim becomes lhSublim, the sum of SEAICE_lhEvap and SEAICE_lhFusion
429        so as to ensure energy conservation when going between phases
430      - A22 was not used anywhere
431     2) Changed regularization procedure for heffActual and hsnowActual to ensure
432        well-boundedness and smooth adjoint in seaice_growth.F
433     3) Fixed a bug where seaice_solve4temp would not recognize ice-free grid cells
434        because the old regularization always set heffActual >= 0.05 cm
435     4) Changed the model so that the default behavior is to put a small (10^-5) "floor"
436        on AREA when HEFF > 0.
437      - went from requiring ALLOW_PRECLUDE_INFINITESIMAL_AREA to be defined to
438        requiring that DISABLE_AREA_FLOOR *not* be defined
439     Affected verifications:
440      - 1D_ocean_ice_column (output.txt output_adm.txt)
441      - global_ocean.cs32x15 (output.seaice.txt output_adm.seaice.txt)
442    o pkg/diagnostics:
443      - move MNC code from diagnostics_out.F into new diagnostics_mnc_out.F (2 S/R).
444      - rename S/R GETDIAG to DIAGNOSTICS_GET_DIAG and change type of 1rst argument
445        (was _RL, now integer) with option = 0 to retrieve all levels.
446      - add pieces of code to compute velocity potential at each level (new diagnostics
447        PhiVEL, works only when UVELMASS & VVELMASS are also turned on);
448        for now, using same params as CG2D (target-resisual, max Nb of iter ...).
449      - fix few issues with counter diagnostics in diagnostics_setdiag.F &
450        diagstats_setdiag.F (if diagnostic counter is itself a counter diag)
451        and in diagnostics_fract_fill.F (do not need a valid pointer for the
452        diagnostics counter-mate); check that definition of counter-diagnostic
453        includes a valid counter-mate (in diagnostics_set_levels.F).
454    o model/src (rStar):
455      - add rStar scaling factor in diags_phi_hyd.F (similar to calc_grad_phi_hyd.F);
456        affect solution only if z* with full pressure in EOS;
457        update output of test-exp global_ocean.90x40x15.
458    o pkg/seaice:
459      - introduce siEps=1e-5 parameter
460      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
461      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
462      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
463        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
464        as well as ice cover age and ridging index (attached to AREA).
465        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
466        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
467        Up to SItrMaxNum=3 tracers can be used simultaneously.
468    o pkg/salt_plume:
469      -introduce SPsalFRAC run time parameter that sets the fraction of the
470       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
471       that gets vertically redistributed (fluxed down) by pkg/salt_plume.
472    o model debug options:
473      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
474        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
475      - Refine debug-msg printing selection (3 new levels):
476        debugMode  : controls printing of debug messages (sequence of S/R calls).
477        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
478         debLevZero =  0 ; /* level of disabled aux. msg printing */
479         debLevA =  1 ; /* level of minimum  aux. msg printing */
480         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
481         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
482         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
483         debLevE =  5 ; /* level of extensive debug printing */
484        New debugLevel default: with default debugMode value (=F),
485          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
486          and if debugMode=T, default debugLevel = 4 (debLevD).
487        Relation with previous settings:
488         debLevB (=2) corresponds to former debLevA (=1)
489         debLevD (=4) corresponds to former debLevB (=2)
490        Note:
491         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
492         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
493            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
494      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
495        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
496    o pkg/obcs:
497      - change OBCSfixTopo default from True to False (should not change the results);
498        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
499    o pkg/thsice:
500      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
501        2nd layer seaice sublimation (unlikely to happen)
502      - use Interior mask for OBCS in thsice_advection.F (similar to what is
503        done in gad_advection & seaice_advection).
504    o adjoint:
505      bug fix spotted by Gael Forget:
506      seaice_advection and thsice_advection still had
507      legacy CPP options to avoid CS corner updates for adjoint
508    o pkg/seaice:
509      => Change some of the defaults (2011/05/29):
510         - change SEAICEuseFluxForm default (from False to True)
511         - change DIFF1 default (from 0.004 m/s to 0. m/s)
512         And print warnings if DIFF1 is not set in data.seaice and centered
513          avection scheme is used without any diffusion.
514      also:
515      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
516      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
517      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
518        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
519        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
520      update results of test exp.:
521         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
522             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
523             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
524         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
525         seaice_obcs: output (SEAICEuseFluxForm=T)
526      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
527          for standard fwd & AD lab_sea tests (to keep the same output).
528  o pkg/seaice/seaice_growth.F:  o pkg/seaice/seaice_growth.F:
529    - use Ian Fenty's capping formulas for actual ice    - use Ian Fenty's capping formulas for actual ice
530    thickness thoughout EVOLUTION branch.    thickness thoughout EVOLUTION branch.
531    - put treatment pathological case #2) in CPP brackets    - put treatment pathological case #2) in CPP brackets
532    (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).    (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
533    - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
534  o pkg/seaice:  o pkg/seaice:
535    - seaice_diffusion.F : remove the min(DX,DY) factor permanently;    - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
536    pass the Laplacian diffusivity (in m/s2) diffKh as a parameter;    pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
537    also pass fac as a param, which can be 1. (to update the tendency    also pass fac as a param, which can be 1. (to update the tendency
538    field) or the time step (to update the field itself).    field) or the time step (to update the field itself).
539    - seaice_advdiff.F: for multidim, call seaice_diffusion with    - seaice_advdiff.F: for multidim, call seaice_diffusion with
540    e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call    e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
541    seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.    seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
542    - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :    - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
543    hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.    hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
   - note: if any of SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.  
   is specified to be >0, then DIFF1 is set to 0.  
544  o pkg/seaice:  o pkg/seaice:
545    diffusion with centered advection scheme (diffus.F & advect.F):    diffusion with centered advection scheme (diffus.F & advect.F):
546    - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)    - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
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