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revision 1.1545 by jmc, Thu Dec 8 03:49:58 2011 UTC revision 1.1567 by jmc, Sun Jan 1 01:25:54 2012 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/exf (interpolation):
8      - assume periodicity in X only if input field cover full longitude range.
9      - improve search for lat. index (supposed to be faster, in ~log2(ny) steps,
10        and should vectorise).
11      - fix input lat of the 2 added row (in case we provide N.pole data).
12    
13    checkpoint63h (2011/12/30)
14    o pkg/seaice:
15      - change declaration of UVM from _RL to _RS in order to get B-grid
16        uIce,vIce monitor when _RS = real*4
17    o pkg/offline:
18      - new S/R OFFLINE_RESET_PARMS for resetting main-model params (switch off flags);
19      - compute vertical velocity if not read from file (switch on exactConserv
20        & staggerTimeStep);
21      - fix output of ptracer monitor iter & time for default PTRACERS_monitorFreq.
22    o verification:
23      - update grid-files (in tutorial_held_suarez_cs/input and fizhi-cs-32x32x40/input)
24        with grid-angle generated using "utils/matlab/cs_grid/cubeCalcAngle.m":
25        fix Pb in yG definition @ 2 missing corners (previously yG was averaged);
26      - update output of exp. global_ocean.cs32x15.viscA4 after changing
27        grid-file angles (used here for coriolis-3d);
28      - remove (or gzip) few files not needed to run fizhi-cs experiments.
29    o pkg/exf (vector interpolation):
30      - rotate vector component toward local grid-axis orientation using grid-angles
31        (stored in GRID.h) instead of locally computed rotation angle; keep old code
32        available with exf option EXF_USE_OLD_VEC_ROTATION (undef by default).
33    o pkg/seaice:
34      - allow to compile with exf options ALLOW_ATM_TEMP or ALLOW_DOWNWARD_RADIATION
35        undefined. Fix and remove the stop when ALLOW_RUNOFF is undefined.
36    o pkg/PKG_OPTIONS.h files:
37      - move #include "CPP_OPTIONS.h" just after #include "PACKAGES_CONFIG.h",
38        outside of the #ifdef ALLOW_THISPKG / #endif block.
39      - update verification/*/code/PKG_OPTIONS.h files.
40    o add a verification experiment (offline_exf_seaice/input.seaice) that test
41      the B-grid LSOR solver
42    o pkg/seaice: sort out emissivity and long wave radiation step 2:
43      - add emissivity for snow and ice as new run-time parameters
44        (unfortunately) that default to the corresponding exf values; this
45        changes results in most verification experiments so that for backward
46        compatibility these parameter have to be set explicitly to inconsistent
47        values (ugly);
48      - the exf-flag EXF_LWDOWN_WITH_EMISSIVITY then gets rid off the hard-wired
49        emissivities of 0.97 associated with lwdownloc in S/R seaice_solve4temp
50        until we agree how to handle this bug properly
51    o pkg/exf (interpolation):
52      - add a set of run-time param ({inputfield}_interpMethod), one for
53        each interpolated input field, to select the interpolation method
54        with a value of zero switching off the interpolation;
55      - print interpolation parameters to standard output;
56      - refine exf_check.F accordingly ; stop if USE_NO_INTERP_RUNOFF is defined
57        (to use instead runoff_interpMethod=0 in data.exf).
58      - simplify default setting of interpolation parameters (for all fields,
59        set position to match model grid cell-center position, leading to trivial
60        interpolation in case of regular Lat-Lon grid) and fix for the case of
61        non-uniform delY.
62    o pkg/exf/exf_radiation.F: add the factor ocean_emissivity to lwdown, for
63       within #ifdef EXF_LWDOWN_WITH_EMISSIVITY/#endif. Unless ocean_emissivity=1.
64       this factor is absolutely required, because the lw exitance (= out-going
65       long wave radiation) is emissivity*stefanBoltzmann*T^4 + rho*lwdown,
66       where the reflectivity rho = 1-emissivity for conservation reasons. Once
67       this is established, we can remove the CPP-Flag (if we want to).
68    o pkg/seaice:
69      - qualify a stop statement in S/R seaice_check: EXF_READ_EVAP and
70        ALLOW_BULKFORMULAE are only required if SEAICE_EXTERNAL_FLUXES is defined
71      - sort out emissivity and long wave radiation, step 1: make SEAICE_emissivity
72        what the name implies (and not emissivity*BoltzmannConstant), this means
73        the old default value of 5.5e-8 now means
74        5.5e-8/5.670e-8 = 0.97001763668430343479 as ocean_emissivity in
75        S/R exf_readparms
76      - FV-discretization of the B-grid LSOR solver, turn on with
77        SEAICE_LSRBNEW. This new solver also involves a slight re-organization
78        of the calling routine dynsolver, so that B and C-grid code look a
79        little more alike.
80      - fix index bugs in ostres.F (B-grid code)
81    o pkg/seaice/seaice_ocean_budget.F: change (unused) code to make it look better
82    o pkg/seaice/seaice_readparms.F: make ocean_emissivity*stefanBoltzmann the
83      default for SEAICE_emissivity, if useEXF; requires setting a wrong
84      parameter value in global_ocean.cs32x15/input.seaice/data.seaice for
85      backward compatiblity
86    o model/src: use sigmaR in calc_ivdc
87    
88    checkpoint63g (2011/12/16)
89    o pkg/seaice/seaice_growth.F:
90      fix heat conservation of the coupled ocean-seaice system.
91      when SEAICE_HEAT_CONSERV_FIX is defined, the mismatch of
92      solid vs liquid water treatment is resolved via QNET.
93    o pkg/seaice/seaice_growth.F:
94      add missing term for sublimation in saltFlux, which was breaking conservation.
95    o pkg/seaice/seaice_model.F:
96      Remove this patholigical case treatment in evolution branch,
97      where it is un-necessary and breaks conservation.
98      Update global_ocean.cs32x15/results accordingly for
99      output.seaice.txt output_adm.seaice.txt and output_adm.seaice_dynmix.txt
100    o model/src:
101      useRealFreshWaterFlux: remove masking of EmPmP (using maskInC) in
102      external_forcing_surf.F and apply mask directly in S/R SOLVE_FOR_PRESSURE.
103    o pkg/obcs:
104      modify Stevens boundary conditions so that S/R obcs_calc_stevens computes
105      tendency for temperature and salinity that is then applied to update
106      theta and salt in S/R obcs_apply_ts; this requires proper masking of all
107      horizontal advection and diffusion contributions on the boundary (in
108      S/Rs gad_advection, gad_calc_rhs, gmredi_rtransport, gmredi_calc_diff), and
109      removing the mask in S/R timestep_tracer. The advantage of this approach is
110      that the updated tracer values include contributions from the surface
111      forcing and vertical diffusion.
112      This modification changes exp4.stevens because of vertical diffusion.
113    o model/src:
114      change non-curvilinear grid setting to also work with exch2 + blank tiles:
115      - move delX,delY to new header file (SET_GRID.h) and adjust length to 1rst
116        face dimensions.
117      - new S/R INI_LOCAL_GRID to define model tile-local grid (using same units
118        as delX,delY) and called from S/R INI_CARTESIAN_GRID, INI_CYLINDER_GRID
119        and INI_SPHERICAL_POLAR_GRID.
120      change test-experiment global_ocean.90x40x15:
121      - split the domain in many more tiles (9x4 tiles of 10x10 each);
122      - switch to exch2 and remove 1 blank-tile (but only for MPI test).
123      - update results of both test (std & dwnslp).
124    o pkg/diagnostics/diagstat_calc.F: fix problem with non-initialised halos in
125       tmp-fields for TARGET_NEC_SX at the cost of extra loops and less vectorisation
126    o model/src:
127      - take sigma-coords related code out of update_etah.F into new S/R UPDATE_ETAWS
128        and fix initialisation when using sigma-coords.
129  o model/src:  o model/src:
130   - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.       - improve Gael's changes from Jan 14, 2011 "addition of an 'update' of hfacc etc.
131     to their current value at the beginning of forward_step.F": add a new run-time     to their current value at the beginning of forward_step.F": add a new run-time
132     switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.     switch "doResetHFactors" (default=false) and use it to do (or not) the resetting.
133   - set doResetHFactors=T in the following test exp:   - set doResetHFactors=T in the following test exp:
134      global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),      global_ocean.90x40x15/input (rStar) & input.dwnslp (linFS),
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