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revision 1.1438 by jmc, Fri May 20 21:48:43 2011 UTC revision 1.1451 by gforget, Thu Jun 9 20:29:31 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      - introduce siEps=1e-5 parameter
9      - use areaMax in AREA update (part 4), consistent with ridging step (part 2.5).
10      - re-organize SEAICE_ADD_SUBLIMATION_TO_FWBUDGET code.
11      - introduce ALLOW_SITRACER and seaice_tracer_phys.F to handle generic seaice tracer.
12        For now it covers, and was tested for, ice salinity and age (attached to HEFF),
13        as well as ice cover age and ridging index (attached to AREA).
14        For now the run time parameters (in data.seaice/SEAICE_PARM03) are
15        SItrName (e.g. 'age') and SItrMate ('HEFF', which is the default, or 'AREA').
16        Up to SItrMaxNum=3 tracers can be used simultaneously.
17    o pkg/salt_plume:
18      -introduce SPsalFRAC run time parameter that sets the fraction of the
19       salt by-product of ice growth (SPsalFRAC*(1-SIsalFRAC)*salt typically)
20       that gets vertically redistributed (fluxed down) by pkg/salt_plume.    
21    o model debug options:
22      - Switch reading of debugMode from S/R INI_PARMS (parameter file "data", stored
23        in PARAMS.h) to S/R EESET_PARMS (parameter file "eedata", stored in EEPARAMS.h).
24      - Refine debug-msg printing selection (3 new levels):
25        debugMode  : controls printing of debug messages (sequence of S/R calls).
26        debugLevel : controls printing of algorithm-relevant auxiliary/debug messages
27         debLevZero =  0 ; /* level of disabled aux. msg printing */
28         debLevA =  1 ; /* level of minimum  aux. msg printing */
29         debLevB =  2 ; /* level of low aux. print (report read-file opening)*/
30         debLevC =  3 ; /* level of moderate debug prt (most pkgs debug msg) */
31         debLevD =  4 ; /* level of enhanced debug prt (add DEBUG_STATS prt) */
32         debLevE =  5 ; /* level of extensive debug printing */
33        New debugLevel default: with default debugMode value (=F),
34          = 2 (debLevB) or = 1 (debLevA) in case ALLOW_AUTODIFF is defined.;
35          and if debugMode=T, default debugLevel = 4 (debLevD).
36        Relation with previous settings:
37         debLevB (=2) corresponds to former debLevA (=1)
38         debLevD (=4) corresponds to former debLevB (=2)
39        Note:
40         a) if debugLevel=0, skip WRITE_GRID call when nIter0 > 0 (same as before);
41         b) default debugLevel=1 is convenient in AD runs (avoid many file opening msgs);
42            to recover previous default, set debugLevel=2 (e.g. AD-test hs94.1x64x5)
43      - Add new parameter (printResidualFreq, read from PARM02 namelist) to print
44        detailed CG solvers convergence; off (=0) by default, except if debugLevel=5.
45    o pkg/obcs:
46      - change OBCSfixTopo default from True to False (should not change the results);
47        keep OBCSfixTopo=T in verification-exp. seaice_obcs.
48    o pkg/thsice:
49      - fix bug in thsice_calc_thickn.F (was introduced in version 1.18) in
50        2nd layer seaice sublimation (unlikely to happen)
51      - use Interior mask for OBCS in thsice_advection.F (similar to what is
52        done in gad_advection & seaice_advection).
53    o adjoint:
54      bug fix spotted by Gael Forget:
55      seaice_advection and thsice_advection still had
56      legacy CPP options to avoid CS corner updates for adjoint
57    o pkg/seaice:
58      => Change some of the defaults (2011/05/29):
59         - change SEAICEuseFluxForm default (from False to True)
60         - change DIFF1 default (from 0.004 m/s to 0. m/s)
61         And print warnings if DIFF1 is not set in data.seaice and centered
62          avection scheme is used without any diffusion.
63      also:
64      - fix seaice_diffusion calls in default AdvScheme part of seaice_advdiff.F;
65      - set SEAICEdiffKh[] default in the same way as SEAICEadvSch[]
66      - stop if DIFF1<>0 with SEAICEadvScheme <> 2, if DIFF1<>0 with any
67        other non-zero SEAICEdiffKh[] diffusivity, if SEAICEadvSalt=T with
68        #undef SEAICE_VARIABLE_SALINITY, if SEAICEadvAge=T with #undef SEAICE_AGE.
69      update results of test exp.:
70         lab_sea: output.fd (switch to AdvScheme=33 with diffKh=20)
71             output.hb87, output_adm.evp (SEAICEuseFluxForm=T and diffKh=200)
72             output_adm.noseaicedyn (SEAICEuseFluxForm=T)
73         offline_exf_seaice: output.seaicetd, output_adm (SEAICEuseFluxForm=T)
74         seaice_obcs: output (SEAICEuseFluxForm=T)
75      and prescribe old default for SEAICEuseFluxForm (=F) and DIFF1 (=0.004)
76          for standard fwd & AD lab_sea tests (to keep the same output).
77    o pkg/seaice/seaice_growth.F:
78      - use Ian Fenty's capping formulas for actual ice
79      thickness thoughout EVOLUTION branch.
80      - put treatment pathological case #2) in CPP brackets
81      (ALLOW_AVOID_INFINITESIMAL_AREA, undef by default).
82      - update global_ocean.cs32x15 and 1D_ocean_ice_colum results accordingly.
83    o pkg/seaice:
84      - seaice_diffusion.F : remove the min(DX,DY) factor permanently;
85      pass the Laplacian diffusivity (in m^2/s) diffKh as a parameter;
86      also pass fac as a param, which can be 1. (to update the tendency
87      field) or the time step (to update the field itself).
88      - seaice_advdiff.F: for multidim, call seaice_diffusion with
89      e.g. SEAICEdiffKhHeff and with fac=1; for single-dim, call
90      seaice_diffusion with e.g. SEAICEdiffKhHeff and with fac=time step.
91      - SEAICE_PARAMS.h, seaice_readparms.F, seaice_check.F :
92      hooks to handle SEAICEdiffKhHeff, SEAICEdiffKhArea, etc.
93    o pkg/seaice:
94      diffusion with centered advection scheme (diffus.F & advect.F):
95      - simplify S/R DIFFUS (put deltaT & DIFF1 factor outside, move EXCH outside)
96        to just compute the laplacian of input-field.
97      - unroll k loop (harmonic,biharmonic diff) in advect.F to save 1 exch call.
98      - fix flux-form version in diffus.F to conserve tracer.
99      update output of lab_sea.fd & lab_sea.hb87 (1rst set of modif affects
100       machine truncation) and lab_sea.salt_plume (conservative flux-form modif)
101    
102    checkpoint62y (2011/05/26)
103    o pkg/seaice:
104     - seaice_growth.F : in EVOLUTION branch, always include
105       a_QSWbyATM_cover in qnet (as it should be).
106     - verification/global_ocean.cs32x15 : update results accordingly
107       (output.seaice.txt output_adm.seaice.txt).
108    o pkg/seaice + obcs:
109     - use maskInW & maskInS in multi-dim advection and biharmonic diffusion:
110       equivalent of assuming no tracer gradient outside the OB region.
111       update output of seaice_obcs (uses DIFF1 <>0 => biharmonic diffusion)
112     - remove calls to OBCS_COPY_TRACER after EXCH calls (no longer needed
113       after changes above);
114     - obcs+seaice cleaning: apply seaice-tracer OB values to tracer field
115       only at OB location (instead of over a band of OLx width).
116    o pkg/seaice:
117     - fix wrong indices in old (non Flux-Form) diffusion default S/R diffus.F
118       (dxG(I+1, ...) changed to dxG(I, ...), no impact on Lat-Lon grid)
119    o pkg/obcs:
120      - split header file "OBCS.h" into 4 separated files:
121        OBCS_PARAMS.h, OBCS_GRID.h, OBCS_FIELDS.h & OBCS_SEAICE.h
122       Note: OBCS_PARAMS.h & OBCS_GRID.h can be included without OBCS_OPTIONS.h
123         (contain no conditional statement which depends on OBCS options).
124      - move "useOBCSYearlyFields" from "data.obcs" (hold in OBCS_PARAMS.h)
125        to parameter file "data.exf", namelist EXF_NML_OBCS (in EXF_PARAM.h).
126    o ctrl, cost, grdchk & autodiff pkgs:
127      - make options file more standard (like other {PKG}_OPTIONS.h file but
128        with AD_CONFIG.h); clean-up some of the included header files.
129  o pkg/obcs:  o pkg/obcs:
130    - do not mask tracer when applying OB (tracer == 0 could generate problems)    - do not mask tracer when applying OB (tracer == 0 could generate problems)
131    - apply tracer OB values to tracer field only at OB location (instead of    - apply tracer OB values to tracer field only at OB location (instead of
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