!----------------------------------------------------------------------- &namdrg_top ! TOP friction (ln_OFF =F & ln_isfcav=T) !----------------------------------------------------------------------- rn_Cd0 = 1.e-3 ! drag coefficient [-] rn_Uc0 = 0.4 ! ref. velocity [m/s] (linear drag=Cd0*Uc0) rn_Cdmax = 0.1 ! drag value maximum [-] (logarithmic drag) rn_ke0 = 2.5e-3 ! background kinetic energy [m2/s2] (non-linear cases) rn_z0 = 3.0e-3 ! roughness [m] (ln_loglayer=T) ln_boost = .false. ! =T regional boost of Cd0 ; =F constant rn_boost = 50. ! local boost factor [-] /