!----------------------------------------------------------------------- &namdrg ! top/bottom drag coefficient (default: NO selection) !----------------------------------------------------------------------- ln_OFF = .false. ! free-slip : Cd = 0 (F => fill namdrg_bot ln_lin = .false. ! linear drag: Cd = Cd0 Uc0 & namdrg_top) ln_non_lin = .false. ! non-linear drag: Cd = Cd0 |U| ln_loglayer = .false. ! logarithmic drag: Cd = vkarmn/log(z/z0) |U| ! ln_drgimp = .true. ! implicit top/bottom friction flag /