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revision 1.2109 by jmc, Wed Dec 24 19:16:33 2014 UTC revision 1.2110 by jmc, Sun Jan 4 17:13:26 2015 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/mom_common (bottomdrag):
8      - average bottomDragFld (ALLOW_BOTTOMDRAG_CONTROL) from grid-cell center
9        to correct location (U & V point) in S/R MOM_U/V_BOTTOMDRAG;
10        update output (adm & tlm) of experiment global_ocean.90x40x15.bottomdrag.
11    o pkg/shelfice (u/v_drag):
12      - add one argument (the other velocity component) to S/R SHELFICE_U/V_DRAG;
13      - use SHELFICEDragLinear & SHELFICEDragQuadratic in shelfice_v_drag.F
14        (now similar to shelfice_u_drag.F)
15      - remove condition on bottomDragTerms when calling SHELFICE_U/V_DRAG
16        from mom_vecinv.F (similar to mom_fluxform calls).
17    o pkg/mom_common (bottomdrag):
18      - add one argument (the other velocity component) to S/R MOM_U/V_BOTTOMDRAG;
19      - add options for alternative discretisation of velocity norm in quadratic
20        bottom drag: averaging of grid-cell-center KE to U.point and V.point
21        (selectBotDragQuadr=0, original code) can produce noisy patterns; this
22        improves when averaging only the other component (e.g. vVel for U bottom
23        drag) using wet-point method (selectBotDragQuadr=2) or not (=1).
24      - add options (bottomVisc_pCell) to account for partial-cell in bottom
25        friction (no-slip BC) thus getting the true distance from the bottom;
26        off by default since this also reduces model stability (explicit bottom
27        friction). Changes produce different machine truncation with linear-drag
28        + no-slip BC: update output of experiments exp4.stevens (10 digits) and
29        front_relax (bvp & mxl, 10 & 11 digits).
30  o model/src & mom pkgs:  o model/src & mom pkgs:
31    - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)    - add one more level to vertical viscosity local arrays (Nr+1, previously Nr)
32      since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k      since no-slip bottom BC uses viscosity @ k+1 to update velocity @ level k
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