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revision 1.1419 by jmc, Fri Apr 29 21:21:10 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:
130      - 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
132        over a band of OLx width)
133      - clean-up obcs_apply_w.F & obcs_apply_eta.F (since less calls to these S/R)
134      - remove OBCS_MULTIDIM_OLD_VERSION code in gad_advection.F and remove
135        obcs_apply_tloc.F & obcs_apply_sloc.F
136    o obcs in model/src:
137      - call OBCS_APPLY_W only if NonHydrostatic.
138      - call OBCS_APPLY_ETA only if NonLinFreeSurf.
139      - reset dEtaHdt and wVel to zero outside OB interior region ;
140      - leave tracer unchanged outside OB interior region: This has no effect
141        on the solution but just to prevent unrealistic tracer value outside OB.
142      - zero out velocity outside OB interior region: This has no effect on
143        the solution but just to prevent unrealistic velocity outside OB.
144    o obcs and non-lin free-surf:
145       move call to OBCS_APPLY_R_STAR from update_r_star.F to calc_r_star.F
146       and call to OBCS_APPLY_SURF_DR from update_surf_dr.F to calc_surf_dr.F
147       + add argument "etaFld" to OBCS_APPLY_R_STAR & OBCS_APPLY_SURF_DR:
148       this fixes missing EXCH + get consistent eta OB value (+ fix restart).
149       update results of test-exp. exp4(nlfs).
150    o exp4 (nlfs) test-exp:
151       use OBC for Eta at Western & Eastern OB (to test prescribing Eta
152       with NonLin-FreeSurf); update output.nlfs.txt
153    o obcs and 2d/3d solver norm:
154       use interior masks (maskInC) to cancel out cg2d & cg3d matrix coeff at OB
155       and outside OB interior region (will allow to place OB further inside the
156       domain). Depending on the domain, can affects cg2d-Norm (previous
157       cancellation outside OB was only partial), e.g. in exp4 & obcs_ctrl,
158       and cg3d-Norm (previous Norm was computed before canceling OB terms),
159       e.g. in tutorial_plume_on_slope.
160      - update output of exp.: exp4 (x2), obcs_ctrl and tutorial_plume_on_slope.
161    o pkg rbcs:
162      - split RBCS.h into 3 files: RBCS_SIZE.h, RBCS_PARAMS.h & RBCS_FIELDS.h
163      - add capability to apply relaxation to horizontal velocity uVel & vVel.
164    o pkg/grdchk: add gradient check for control variable xx_shifwflx
165    o pkg/shelfice/shelfice_init_fixed.F
166      fix CPP-flag combinations
167    o pkg/seaice: Merge iceage code of Pierre Rampal
168      * update/change/correct ice age calculations
169      * add age updates for pathological cases
170      Probably needs more testing...
171    
172    checkpoint62x (2011/05/13)
173    o pkg/mom_vecinv:
174       high-order vorticity scheme: use interior masks (maskInW & S)
175       to zero-out (outside OB) gradient of vorticity.
176    o verification exp.:
177       turn on "useEnergyConservingCoriolis" (better discretisation) in exp.
178       hs94.128x64x5 and seaice_obcs ; update results.
179    o pkg/obcs:
180      fix bug in OBeta for YZ sections in obcs_exf_load.F
181    o pkg/ctrl, pkg/shelfice, and optim:
182      - add new control variable xx_shifwflx (fresh water flux underneath ice
183        shelves). This is almost as tedious as obcs-ctrl, because the
184        variables needs its own mask.
185      - add a cost function term that penalizes the deviation of xx_shifwflx
186        from the first guess (zero) in analogy to other control variables
187    o pkg/shelfice:
188      - start basic adjoint
189    o pkg/ctrl:
190      - remove extra 2D field "for good measure" when initializing in
191        ctrl_set_globfld_[xy/xz/yz].F
192      - replace hard coded precision 32 (a bug) in ctrl_map_ini_gen by ctrlprec
193      - improve error messages in ctrl_set_unpack_*
194    o OBC implementation in momentum:
195       use interior masks (maskInC,W & S) in momentum S/R:
196       - multiply divergence, tension and some del^i.u or del^j.v by maskInC
197       - multiply del2u,del2v by maskInW/S (biharmonic viscosity)
198       - multiply horiz. grad of vorticity by maskInW/S (in Leith scheme)
199       - multiply gradient of wVel by maskInW/S in del2w calculation (NonHyd)
200       Motivation: fix/clean implementation of OBC with biharmonic-viscosity
201        (and also with Leith/Smagorinsky harmonic-viscosity).
202       Update output of experiment dome and exp4 (+nlfs).
203    o exp4 test-exp:
204      - turn on: nonHydrostatic, exactConserv, viscA4 (with momDissip_In_AB=F)
205        and prescribe time-varying OB (without pkg/exf) for zonal-velocity
206        at Western & Eastern Boundaries (+/- 1 per-cent); Also prescribe
207        time-varying OB at Western-side for wVel (NonHyd); update output.
208      - add secondary set-up (.nlfs) using NonLin FreeSurf (z*) + mom_vecinv
209        and biharmonic-viscosity ; also use prescribed time varying OB.
210    o pkg/obcs:
211      fix bug in OBWeta,OBWeta indices in obcs_apply_r_star.F
212    o model/src:
213      - fix startTime setting when baseTime<>0 & nIter0=0 are specified ;
214      - initialise startTime & nIter0 with unlikely values: allows to set one
215        from the other without ambiguity.
216  o seaice_obcs test-exp.:  o seaice_obcs test-exp.:
217    add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.    add small diffK4T,S to test biharmonic diffusivity with OBCS ; update output.
218  o pkg/obcs:  o pkg/obcs:

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