1 | !----------------------------------------------------------------------- |
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2 | &namtra_ldf ! lateral diffusion scheme for tracers (default: NO selection) |
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3 | !----------------------------------------------------------------------- |
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4 | ! ! Operator type: |
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5 | ln_traldf_OFF = .false. ! No explicit diffusion |
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6 | ln_traldf_lap = .false. ! laplacian operator |
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7 | ln_traldf_blp = .false. ! bilaplacian operator |
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8 | ! |
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9 | ! ! Direction of action: |
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10 | ln_traldf_lev = .false. ! iso-level |
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11 | ln_traldf_hor = .false. ! horizontal (geopotential) |
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12 | ln_traldf_iso = .false. ! iso-neutral (standard operator) |
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13 | ln_traldf_triad = .false. ! iso-neutral (triad operator) |
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14 | ! |
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15 | ! ! iso-neutral options: |
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16 | ln_traldf_msc = .false. ! Method of Stabilizing Correction (both operators) |
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17 | rn_slpmax = 0.01 ! slope limit (both operators) |
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18 | ln_triad_iso = .false. ! pure horizontal mixing in ML (triad only) |
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19 | rn_sw_triad = 1 ! =1 switching triad ; =0 all 4 triads used (triad only) |
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20 | ln_botmix_triad = .false. ! lateral mixing on bottom (triad only) |
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21 | ! |
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22 | ! ! Coefficients: |
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23 | nn_aht_ijk_t = 0 ! space/time variation of eddy coefficient: |
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24 | ! ! =-20 (=-30) read in eddy_diffusivity_2D.nc (..._3D.nc) file |
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25 | ! ! = 0 constant |
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26 | ! ! = 10 F(k) =ldf_c1d |
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27 | ! ! = 20 F(i,j) =ldf_c2d |
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28 | ! ! = 21 F(i,j,t) =Treguier et al. JPO 1997 formulation |
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29 | ! ! = 30 F(i,j,k) =ldf_c2d * ldf_c1d |
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30 | ! ! = 31 F(i,j,k,t)=F(local velocity and grid-spacing) |
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31 | ! ! time invariant coefficients: aht0 = 1/2 Ud*Ld (lap case) |
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32 | ! ! or = 1/12 Ud*Ld^3 (blp case) |
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33 | rn_Ud = 0.01 ! lateral diffusive velocity [m/s] (nn_aht_ijk_t= 0, 10, 20, 30) |
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34 | rn_Ld = 200.e+3 ! lateral diffusive length [m] (nn_aht_ijk_t= 0, 10) |
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35 | / |
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