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revision 1.1783 by mlosch, Mon Dec 17 15:38:59 2012 UTC revision 1.1808 by mlosch, Thu Jan 17 09:00:32 2013 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: add a line search option to the JFNK solver
8      - move update of u/vIce and computation of initial residual into a separate
9        routine (same file); makes the code a little easier to read (?)
10      - the line search requires computation of the residual and for some reason
11        I cannot do the update of u/vIce at the beginning of the Newton loop
12        without changing the results, so we move computation of the new residual
13        also to the end of the Newton loop, even without the line search
14    o pkg/mdsio:
15      - write missing value (corresponding to undefined array value) to meta files;
16        skip this if missing value is one (UNSET_RL would be a better value for the
17        case of undefined missing value but it's current the default missing-value);
18        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
19    o pkg/exf & thsice:
20      - for diagnostics purpose, fill-up and update Qsw array (+ fill the diagnostics)
21        even when SHORTWAVE_HEATING is #undef;
22    o verification/cfc_example:
23      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to illustrate
24        how to use it).
25    o verification/offline_exf_seaice:
26      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
27        files to only one time-record.
28      in input.thermo: narrow the 2 bands of low initial ice-concentration near
29        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
30        snapshot output; same mcPheePiston value as in thsice with surf-current=0.2m/s.
31      in input.thsice: similar set-up as in input.thermo (channel with same seaice
32        initial conditions).
33    o verification/cfc_example:
34      - update file "data" with more standard choice (default rotationPeriod,
35        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
36        set deltaTFreeSurf to deltaTtracer) and update the output.
37    o pkg/layers:
38      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
39      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
40    o verification/offline_exf_seaice:
41      - set all {field}period to zero for constant-in-time forcing (not tested
42        anywhere else).
43    o verification/offline_exf_seaice:
44      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
45      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
46    o model/src:
47      - implement Finite-Volume method for (hydrostatic) presure gradient
48        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
49    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
50      - In order to be compatible with the default EVP code, this requires changing
51        the EVP code around a little; and because any small change immediately
52        breaks the lab_sea.hb87 verification experiment, the reference output is
53        updated two times (each time the remaining aggrement was only 2 digits):
54        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
55        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
56        The adjoint test lab_sea.evp also needed to be updated.
57      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
58        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
59        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
60        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
61        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
62        kept obscure, because I need to test it a little more.
63    o pkg/cheapaml:
64      - fix few incorrect type (_RL/_RS) in subroutine calls.
65    o pkg/seaice:
66      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
67        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
68    o model/src:
69      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
70        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
71        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
72    o pkg/cheapaml:
73      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
74        update output of experiment cheapAML_box.
75      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
76        and set them only in one place (cheapaml_readparms.F).
77      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
78      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
79        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
80    o model/src/the_main_loop.F:
81      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
82    o pkg/seaice:
83      - remove legacy branch code.
84      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
85    o verification/*/code*/SEAICE_OPTIONS.h:
86      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
87        SEAICE_CAP_HEFF).
88    o pkg/cheapaml:
89      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
90        to load new forcing fields.
91      - add missing "_d 0" where it's needed; + some editing (improve indentation).
92      - remove switch to "-r8" compiler option (no longer needed) in verification
93        cheapAML_box, keep same output (small trucation error differences).
94    o verification/offline_exf_seaice:
95      - add thermodynamics only test.
96    o verification/cheapAML_box:
97      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
98        keep same output (same 14 digits for cg2d).
99      - switch on "-r8" compiler option (some numerical values are missing
100        the "_d 0") and update output (only 6 digits for cg2d were preserved).
101    
102    checkpoint64b (2012/12/24)
103    o pkg/cheapaml:
104      - remove un-used variables (Qnet,EmPmR) from pickup files.
105      - store tendency of advected variables into cheapaml pickup file
106        and fix the AB-2 restart.
107    o verification/offline_exf_seaice and lab_sea adjoint:
108      - switch to new code (#undef SEAICE_GROWTH_LEGACY).
109      - switch to 4 time steps in offline, consistent with lab_sea.
110      - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
111      - update results after change of experiment seaice.
112    o pkg/seaice:
113      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
114        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
115        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
116        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
117    o model/src:
118      - add run-time parameter to select CG2D solver minimum-residual solution
119        (in case of a poor convergence).
120    o pkg/seaice/seaice_lsr.F
121      - move calculation of matrix coefficients into new
122        S/R SEAICE_CALC_LSR_COEFFS; for now this routine remains in the same
123        file; the main purpose of this change is to be able to reuse the code
124        in S/R SEAICE_PRECONDITIONER
125      - modify the computation of the residual so that the mass of sea-ice
126        is not used twice; this simplifies the calculations, but since
127        the residual is never used except when LSR_mixIniGuess.ge.4---and this is
128        not tested in testreport---this does not affect the testreport results.
129    o verification/seaice_obcs:
130      - disable SEAICE_GROWTH_LEGACY; reset input files to match those of
131        verification/lab_sea/input.salt_plume; changes results/output.txt*
132    o model/src:
133      - adapt quasi-hydrostatic formulation to work with p or p* coordinate.
134  o pkg/seaice:  o pkg/seaice:
135    - improve description of parameters in seaice_fgmres.F and start    - improve description of parameters in seaice_fgmres.F and start
136      cleaning up the code      cleaning up the code
137    - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of    - change name of SCALPROD to SEAICE_SCALPROD and modify meaning of
138      second argument      second argument
139    - add a metric based on grid cell area to SEAICE_SCALPROD; update    - add a metric based on grid cell area to SEAICE_SCALPROD; update
140      results of offline_exf_seaice.dyn_jfnk      results of offline_exf_seaice.dyn_jfnk
# Line 30  o pkg/seaice: Line 157  o pkg/seaice:
157    - add a verification experiment for JFNK in offline_exf_seaice    - add a verification experiment for JFNK in offline_exf_seaice
158  o verification:  o verification:
159    - change (for now, only fwd test) offline_exf_seaice experiment:    - change (for now, only fwd test) offline_exf_seaice experiment:
160      use a re-entrant channel with idealized costline (trapezoidal shape)      use a re-entrant channel with idealized coastline (trapezoidal shape)
161      at southern boundary to explore seaice dynamics and thermodynamics      at southern boundary to explore seaice dynamics and thermodynamics
162      with simple forcing. Main set-up has dynamics+thermo and SST relaxation;      with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
163      secondary test (input.thsice) use thermodynamics only with SST relaxation.      secondary test (input.thsice) use thermodynamics only with SST relaxation.
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