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trunk/DOC/Namelists/namdyn_ldf
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8464
Last change on this file since 8464 was 6140, checked in by timgraham, 9 years ago | |
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1 | !----------------------------------------------------------------------- |
2 | &namdyn_ldf ! lateral diffusion on momentum (default: NO) |
3 | !----------------------------------------------------------------------- |
4 | ! ! Type of the operator : |
5 | ! ! no diffusion: set ln_dynldf_lap=..._blp=F |
6 | ln_dynldf_lap = .false. ! laplacian operator |
7 | ln_dynldf_blp = .false. ! bilaplacian operator |
8 | ! ! Direction of action : |
9 | ln_dynldf_lev = .false. ! iso-level |
10 | ln_dynldf_hor = .false. ! horizontal (geopotential) |
11 | ln_dynldf_iso = .false. ! iso-neutral |
12 | ! ! Coefficient |
13 | nn_ahm_ijk_t = 0 ! space/time variation of eddy coef |
14 | ! ! =-30 read in eddy_viscosity_3D.nc file |
15 | ! ! =-20 read in eddy_viscosity_2D.nc file |
16 | ! ! = 0 constant |
17 | ! ! = 10 F(k)=c1d |
18 | ! ! = 20 F(i,j)=F(grid spacing)=c2d |
19 | ! ! = 30 F(i,j,k)=c2d*c1d |
20 | ! ! = 31 F(i,j,k)=F(grid spacing and local velocity) |
21 | rn_ahm_0 = 40000. ! horizontal laplacian eddy viscosity [m2/s] |
22 | rn_ahm_b = 0. ! background eddy viscosity for ldf_iso [m2/s] |
23 | rn_bhm_0 = 1.e+12 ! horizontal bilaplacian eddy viscosity [m4/s] |
24 | ! |
25 | ! Caution in 20 and 30 cases the coefficient have to be given for a 1 degree grid (~111km) |
26 | / |
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