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revision 1.1789 by gforget, Sat Dec 22 18:35:27 2012 UTC revision 1.1810 by jmc, Sat Jan 19 00:37:07 2013 UTC
# Line 4  $Name$ Line 4  $Name$
4      Notes on tags used in MITgcmUV      Notes on tags used in MITgcmUV
5      ==============================      ==============================
6    
7    checkpoint64c (2013/01/18)
8    o pkg/seaice:
9      - add a parameter JFNKres_tFac that can replace JFNKres_t
10        (= JFNKres_tFac*JFNKresidual before JFNK solver)
11      - add a line search option to the JFNK solver
12      - move update of u/vIce and computation of initial residual into a separate
13        routine (same file); makes the code a little easier to read (?)
14      - the line search requires computation of the residual and for some reason
15        I cannot do the update of u/vIce at the beginning of the Newton loop
16        without changing the results, so we move computation of the new residual
17        also to the end of the Newton loop, even without the line search
18    o pkg/mdsio:
19      - write missing value (corresponding to undefined array value) to meta files;
20        skip this if missing value is one (UNSET_RL would be a better value for the
21        case of undefined missing value but it's current the default missing-value);
22        Also update mdsio_read_meta.F (reading timeInterval & missing-value).
23    o pkg/exf & thsice:
24      - for diagnostics purpose, fill-up and update Qsw array (+ fill the
25        diagnostics) even when SHORTWAVE_HEATING is #undef;
26    o verification/cfc_example:
27      - turn on pkg/layers with pkg/diagnostics (to test pkg/layers and to
28        illustrate how to use it).
29    o verification/offline_exf_seaice:
30      in input: add SEAICErestoreUnderIce=.TRUE., and reduce size of forcing
31        files to only one time-record.
32      in input.thermo: narrow the 2 bands of low initial ice-concentration near
33        N & S edges; switch on SEAICErestoreUnderIce=T; use pkg/diagnostics for
34        snapshot output; same mcPheePiston value as in thsice with
35        surf-current=0.2m/s.
36      in input.thsice: similar set-up as in input.thermo (channel with same seaice
37        initial conditions).
38    o verification/cfc_example:
39      - update file "data" with more standard choice (default rotationPeriod,
40        exactConserv=T, reduce ivdc_kappa to 10, remove multiDimAdvection=F,
41        set deltaTFreeSurf to deltaTtracer) and update the output.
42    o pkg/layers:
43      - fix bolus part so that it compiles with #undef GM_BOLUS_ADVEC;
44      - ensure that "layers_bolus" is switched to False when useGMRedi=False.
45    o verification/offline_exf_seaice:
46      - set all {field}period to zero for constant-in-time forcing (not tested
47        anywhere else).
48    o verification/offline_exf_seaice:
49      - dyn_lsr  : use pkg/seaice S/R (instead of pkg/thsice) to advect sea-ice;
50      - dyn_jfnk : use pkg/thsice S/R (instead of pkg/seaice) to advect sea-ice.
51    o model/src:
52      - implement Finite-Volume method for (hydrostatic) presure gradient
53        from S.-J. Lin (QJRMS 1997), for atmosphere using sigma-coordinate.
54    o pkg/seaice: implement EVP* by Lemieux et al. (2012).
55      - In order to be compatible with the default EVP code, this requires changing
56        the EVP code around a little; and because any small change immediately
57        breaks the lab_sea.hb87 verification experiment, the reference output is
58        updated two times (each time the remaining aggrement was only 2 digits):
59        - after replacing 1/dt by 1*recip_dt with a precomputed recip_dt
60        - after replacing 1/(1+0.5*dt/tau) by a/(a+1), with a=2*tau/dt
61        The adjoint test lab_sea.evp also needed to be updated.
62      - Turn on EVP* by setting SEAICE_deltaTevp as before, and setting
63        SEAICEuseEVPstar=.true.; for EVP* SEAICE_deltaTevp does not need to be
64        a factor of SEAICE_deltaTdyn, and you can set the number of EVP steps
65        explicitly with SEAICEnEVPstarSteps (thereby overriding the default of
66        INT(SEAICE_deltaTdyn/SEAICE_deltaTevp)). Controlling EVP* is deliberately
67        kept obscure, because I need to test it a little more.
68    o pkg/cheapaml:
69      - fix few incorrect type (_RL/_RS) in subroutine calls.
70    o pkg/seaice:
71      - new S/R SEAICE_MAP_RS2VEC (similar to SEAICE_MAP2VEC) to map _RS arrays
72        to _RL vector; this fixes JFNK code when compiling with "-use_r4" option.
73    o model/src:
74      - add a warning if using select_rStar=2 with nonlinFreeSurf <> 4;
75        change (in input_ad*/data) select_rStar from 2 to 1 for AD verification
76        experiments global_ocean.cs32x15 & tutorial_tracer_adjsens (+ update output)
77    o pkg/cheapaml:
78      - replace "273.1 _d 0" by celsius2K in pkg/cheapaml/cheapaml.F and
79        update output of experiment cheapAML_box.
80      - store in CHEAPAML.h coeffs ssq[0:2] for saturation specific humidity,
81        and set them only in one place (cheapaml_readparms.F).
82      - replace "273.16 _d 0" by celsius2K & replace "3.14159 _d 0" by constant "PI"
83      - remove re-setting of main-model parameter "celsius2K" (in cheapaml_readparms)
84        and re-setting of cheapAML params "lath" & "p0" (in cheapaml_init_varia).
85    o model/src/the_main_loop.F:
86      - fix revision 129 : need both ALLOW_ECCO and ALLOW_ECCO_EVOLUTION.
87    o pkg/seaice:
88      - remove legacy branch code.
89      - retire SEAICE_GROWTH_LEGACY and SEAICE_CAP_HEFF accordingly.
90    o verification/*/code*/SEAICE_OPTIONS.h:
91      - remove documentation for retired CPP flags (SEAICE_GROWTH_LEGACY,
92        SEAICE_CAP_HEFF).
93    o pkg/cheapaml:
94      - use standard routine (S/R GET_PERIODIC_INTERVAL) to decide when it is time
95        to load new forcing fields.
96      - add missing "_d 0" where it's needed; + some editing (improve indentation).
97      - remove switch to "-r8" compiler option (no longer needed) in verification
98        cheapAML_box, keep same output (small trucation error differences).
99    o verification/offline_exf_seaice:
100      - add thermodynamics only test.
101    o verification/cheapAML_box:
102      - split the domain in 8 (2x4) tiles; add MPI and multi-threaded test;
103        keep same output (same 14 digits for cg2d).
104      - switch on "-r8" compiler option (some numerical values are missing
105        the "_d 0") and update output (only 6 digits for cg2d were preserved).
106    
107    checkpoint64b (2012/12/24)
108    o pkg/cheapaml:
109      - remove un-used variables (Qnet,EmPmR) from pickup files.
110      - store tendency of advected variables into cheapaml pickup file
111        and fix the AB-2 restart.
112  o verification/offline_exf_seaice and lab_sea adjoint:  o verification/offline_exf_seaice and lab_sea adjoint:
113   - switch to new code (#undef SEAICE_GROWTH_LEGACY).    - switch to new code (#undef SEAICE_GROWTH_LEGACY).
114   - switch to 4 time steps in offline, consistent with lab_sea.    - switch to 4 time steps in offline, consistent with lab_sea.
115   - match paramaters from SEAICE_GROWTH_LEGACY branch in data.seaice.    - match parameters from SEAICE_GROWTH_LEGACY branch in data.seaice.
116   - update results after change of experiment seaice.    - update results after change of experiment seaice.
117    o pkg/seaice:
118      - remove option SEAICE_MULTICATEGORY; has been replaced with run-time
119        parameter SEAICE_multDim. Issue a warning if SEAICE_MULTICATEGORY is
120        still defined since SEAICE_multDim needs to be set to MULTDIM value (from
121        SEAICE_SIZE.h) to recover previous #define SEAICE_MULTICATEGORY default.
122  o model/src:  o model/src:
123    - add run-time parameter to select CG2D solver minimum-residual solution    - add run-time parameter to select CG2D solver minimum-residual solution
124      (in case of a poor convergence).      (in case of a poor convergence).
# Line 18  o pkg/seaice/seaice_lsr.F Line 128  o pkg/seaice/seaice_lsr.F
128      file; the main purpose of this change is to be able to reuse the code      file; the main purpose of this change is to be able to reuse the code
129      in S/R SEAICE_PRECONDITIONER      in S/R SEAICE_PRECONDITIONER
130    - modify the computation of the residual so that the mass of sea-ice    - modify the computation of the residual so that the mass of sea-ice
131      is not used twice; this simplyfies the calculations, but since      is not used twice; this simplifies the calculations, but since
132      the residual is never used except when LSR_mixIniGuess.ge.4---and this is      the residual is never used except when LSR_mixIniGuess.ge.4---and this is
133      not tested in testreport---this does not affect the testreport results.      not tested in testreport---this does not affect the testreport results.
134  o verification/seaice_obcs:  o verification/seaice_obcs:
# Line 52  o pkg/seaice: Line 162  o pkg/seaice:
162    - add a verification experiment for JFNK in offline_exf_seaice    - add a verification experiment for JFNK in offline_exf_seaice
163  o verification:  o verification:
164    - change (for now, only fwd test) offline_exf_seaice experiment:    - change (for now, only fwd test) offline_exf_seaice experiment:
165      use a re-entrant channel with idealized costline (trapezoidal shape)      use a re-entrant channel with idealized coastline (trapezoidal shape)
166      at southern boundary to explore seaice dynamics and thermodynamics      at southern boundary to explore seaice dynamics and thermodynamics
167      with simple forcing. Main set-up has dynamics+thermo and SST relaxation;      with simple forcing. Main set-up has dynamics+thermo and SST relaxation;
168      secondary test (input.thsice) use thermodynamics only with SST relaxation.      secondary test (input.thsice) use thermodynamics only with SST relaxation.
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