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