From 191b5be35ca028a2aa0608f9202048c5a4a22ca3 Mon Sep 17 00:00:00 2001 From: Gustavo Marques Date: Thu, 19 Apr 2018 08:56:19 -0600 Subject: [PATCH] Add a factor of 2 when adding Kv_slow into Kv_add --- .../vertical/MOM_vert_friction.F90 | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/src/parameterizations/vertical/MOM_vert_friction.F90 b/src/parameterizations/vertical/MOM_vert_friction.F90 index 95773908aa..973f256915 100644 --- a/src/parameterizations/vertical/MOM_vert_friction.F90 +++ b/src/parameterizations/vertical/MOM_vert_friction.F90 @@ -1165,16 +1165,17 @@ subroutine find_coupling_coef(a, hvel, do_i, h_harm, bbl_thick, kv_bbl, z_i, h_m ! add "slow" varying vertical viscosity (e.g., from background, tidal etc) if (associated(visc%Kv_slow)) then + ! GMM/ A factor of 2 is also needed here, see comment above from BGR. if (work_on_u) then do K=2,nz ; do i=is,ie ; if (do_i(i)) then - Kv_add(i,K) = Kv_add(i,K) + 0.5 * (visc%Kv_slow(i,j,k) + visc%Kv_slow(i+1,j,k)) + Kv_add(i,K) = Kv_add(i,K) + 1.0 * (visc%Kv_slow(i,j,k) + visc%Kv_slow(i+1,j,k)) endif ; enddo ; enddo if (do_OBCs) then do I=is,ie ; if (do_i(I) .and. (OBC%segnum_u(I,j) /= OBC_NONE)) then if (OBC%segment(OBC%segnum_u(I,j))%direction == OBC_DIRECTION_E) then - do K=2,nz ; Kv_add(i,K) = Kv_add(i,K) + visc%Kv_slow(i,j,k) ; enddo + do K=2,nz ; Kv_add(i,K) = Kv_add(i,K) + 2. * visc%Kv_slow(i,j,k) ; enddo elseif (OBC%segment(OBC%segnum_u(I,j))%direction == OBC_DIRECTION_W) then - do K=2,nz ; Kv_add(i,K) = Kv_add(i,K) + visc%Kv_slow(i+1,j,k) ; enddo + do K=2,nz ; Kv_add(i,K) = Kv_add(i,K) + 2. * visc%Kv_slow(i+1,j,k) ; enddo endif endif ; enddo endif @@ -1183,14 +1184,14 @@ subroutine find_coupling_coef(a, hvel, do_i, h_harm, bbl_thick, kv_bbl, z_i, h_m endif ; enddo ; enddo else do K=2,nz ; do i=is,ie ; if (do_i(i)) then - Kv_add(i,K) = Kv_add(i,K) + 0.5*(visc%Kv_slow(i,j,k) + visc%Kv_slow(i,j+1,k)) + Kv_add(i,K) = Kv_add(i,K) + 1.0*(visc%Kv_slow(i,j,k) + visc%Kv_slow(i,j+1,k)) endif ; enddo ; enddo if (do_OBCs) then do i=is,ie ; if (do_i(i) .and. (OBC%segnum_v(i,J) /= OBC_NONE)) then if (OBC%segment(OBC%segnum_v(i,J))%direction == OBC_DIRECTION_N) then - do K=2,nz ; Kv_add(i,K) = Kv_add(i,K) + visc%Kv_slow(i,j,k) ; enddo + do K=2,nz ; Kv_add(i,K) = Kv_add(i,K) + 2. * visc%Kv_slow(i,j,k) ; enddo elseif (OBC%segment(OBC%segnum_v(i,J))%direction == OBC_DIRECTION_S) then - do K=2,nz ; Kv_add(i,K) = Kv_add(i,K) + visc%Kv_slow(i,j+1,k) ; enddo + do K=2,nz ; Kv_add(i,K) = Kv_add(i,K) + 2. * visc%Kv_slow(i,j+1,k) ; enddo endif endif ; enddo endif