Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

+*Non-Boussinesq revision of MOM_sponge code #441

Merged
merged 2 commits into from
Aug 23, 2023
Merged

+*Non-Boussinesq revision of MOM_sponge code #441

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
535b27d
+(*)Use tv%SpV in MOM_sponge code
Hallberg-NOAA May 14, 2023
47b109a
Merge branch 'dev/gfdl' into nonBous_sponge
marshallward Aug 23, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
76 changes: 58 additions & 18 deletions src/parameterizations/vertical/MOM_sponge.F90
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -347,10 +347,14 @@ subroutine apply_sponge(h, tv, dt, G, GV, US, ea, eb, CS, Rcv_ml)
! give 0 at the surface [nondim].

real :: e(SZK_(GV)+1) ! The interface heights [Z ~> m], usually negative.
real :: dz_to_h(SZK_(GV)+1) ! Factors used to convert interface height movement
! to thickness fluxes [H Z-1 ~> nondim or kg m-3]
real :: e0 ! The height of the free surface [Z ~> m].
real :: e_str ! A nondimensional amount by which the reference
! profile must be stretched for the free surfaces
! heights in the two profiles to agree [nondim].
real :: w_mean ! The vertical displacement of water moving upward through an
! interface within 1 timestep [Z ~> m].
real :: w ! The thickness of water moving upward through an
! interface within 1 timestep [H ~> m or kg m-2].
real :: wm ! wm is w if w is negative and 0 otherwise [H ~> m or kg m-2].
Expand Down Expand Up @@ -384,9 +388,15 @@ subroutine apply_sponge(h, tv, dt, G, GV, US, ea, eb, CS, Rcv_ml)
"work properly with i-mean sponges and a bulk mixed layer.")

do j=js,je ; do i=is,ie ; e_D(i,j,nz+1) = -G%bathyT(i,j) ; enddo ; enddo
do k=nz,1,-1 ; do j=js,je ; do i=is,ie
e_D(i,j,K) = e_D(i,j,K+1) + h(i,j,k)*GV%H_to_Z
enddo ; enddo ; enddo
if ((.not.GV%Boussinesq) .and. allocated(tv%SpV_avg)) then
do k=nz,1,-1 ; do j=js,je ; do i=is,ie
e_D(i,j,K) = e_D(i,j,K+1) + GV%H_to_RZ * h(i,j,k) * tv%SpV_avg(i,j,k)
enddo ; enddo ; enddo
else
do k=nz,1,-1 ; do j=js,je ; do i=is,ie
e_D(i,j,K) = e_D(i,j,K+1) + h(i,j,k)*GV%H_to_Z
enddo ; enddo ; enddo
endif
do j=js,je
do i=is,ie
dilate(i) = (G%bathyT(i,j) + G%Z_ref) / (e_D(i,j,1) + G%bathyT(i,j))
Expand Down Expand Up @@ -424,20 +434,39 @@ subroutine apply_sponge(h, tv, dt, G, GV, US, ea, eb, CS, Rcv_ml)
do K=2,nz+1 ; do i=is,ie
h_above(i,K) = h_above(i,K-1) + max(h(i,j,k-1)-GV%Angstrom_H, 0.0)
enddo ; enddo
do K=2,nz
! w is positive for an upward (lightward) flux of mass, resulting
! in the downward movement of an interface.
w = damp_1pdamp * eta_mean_anom(j,K) * GV%Z_to_H
do i=is,ie

! In both blocks below, w is positive for an upward (lightward) flux of mass,
! resulting in the downward movement of an interface.
if ((.not.GV%Boussinesq) .and. allocated(tv%SpV_avg)) then
do K=2,nz
w_mean = damp_1pdamp * eta_mean_anom(j,K)
do i=is,ie
w = w_mean * 2.0*GV%RZ_to_H / (tv%SpV_avg(i,j,k-1) + tv%SpV_avg(i,j,k))
if (w > 0.0) then
w_int(i,j,K) = min(w, h_below(i,K))
eb(i,j,k-1) = eb(i,j,k-1) + w_int(i,j,K)
else
w_int(i,j,K) = max(w, -h_above(i,K))
ea(i,j,k) = ea(i,j,k) - w_int(i,j,K)
endif
enddo
enddo
else
do K=2,nz
w = damp_1pdamp * eta_mean_anom(j,K) * GV%Z_to_H
if (w > 0.0) then
w_int(i,j,K) = min(w, h_below(i,K))
eb(i,j,k-1) = eb(i,j,k-1) + w_int(i,j,K)
do i=is,ie
w_int(i,j,K) = min(w, h_below(i,K))
eb(i,j,k-1) = eb(i,j,k-1) + w_int(i,j,K)
enddo
else
w_int(i,j,K) = max(w, -h_above(i,K))
ea(i,j,k) = ea(i,j,k) - w_int(i,j,K)
do i=is,ie
w_int(i,j,K) = max(w, -h_above(i,K))
ea(i,j,k) = ea(i,j,k) - w_int(i,j,K)
enddo
endif
enddo
enddo
endif
do k=1,nz ; do i=is,ie
ea_k = max(0.0, -w_int(i,j,K))
eb_k = max(0.0, w_int(i,j,K+1))
Expand All @@ -462,9 +491,20 @@ subroutine apply_sponge(h, tv, dt, G, GV, US, ea, eb, CS, Rcv_ml)
damp = dt * CS%Iresttime_col(c)

e(1) = 0.0 ; e0 = 0.0
do K=1,nz
e(K+1) = e(K) - h(i,j,k)*GV%H_to_Z
enddo
if ((.not.GV%Boussinesq) .and. allocated(tv%SpV_avg)) then
do K=1,nz
e(K+1) = e(K) - GV%H_to_RZ * h(i,j,k) * tv%SpV_avg(i,j,k)
enddo
dz_to_h(1) = GV%RZ_to_H / tv%SpV_avg(i,j,1)
do K=2,nz
dz_to_h(K) = 2.0*GV%RZ_to_H / (tv%SpV_avg(i,j,k-1) + tv%SpV_avg(i,j,k))
enddo
else
do K=1,nz
e(K+1) = e(K) - h(i,j,k)*GV%H_to_Z
dz_to_h(K) = GV%Z_to_H
enddo
endif
e_str = e(nz+1) / CS%Ref_eta(nz+1,c)

if ( CS%bulkmixedlayer ) then
Expand All @@ -481,7 +521,7 @@ subroutine apply_sponge(h, tv, dt, G, GV, US, ea, eb, CS, Rcv_ml)
wpb = 0.0; wb = 0.0
do k=nz,nkmb+1,-1
if (GV%Rlay(k) > Rcv_ml(i,j)) then
w = MIN((((e(K)-e0) - e_str*CS%Ref_eta(K,c)) * damp)*GV%Z_to_H, &
w = MIN((((e(K)-e0) - e_str*CS%Ref_eta(K,c)) * damp)*dz_to_h(K), &
((wb + h(i,j,k)) - GV%Angstrom_H))
wm = 0.5*(w-ABS(w))
do m=1,CS%fldno
Expand Down Expand Up @@ -537,7 +577,7 @@ subroutine apply_sponge(h, tv, dt, G, GV, US, ea, eb, CS, Rcv_ml)
wpb = 0.0
wb = 0.0
do k=nz,1,-1
w = MIN((((e(K)-e0) - e_str*CS%Ref_eta(K,c)) * damp)*GV%Z_to_H, &
w = MIN((((e(K)-e0) - e_str*CS%Ref_eta(K,c)) * damp)*dz_to_h(K), &
((wb + h(i,j,k)) - GV%Angstrom_H))
wm = 0.5*(w - ABS(w))
do m=1,CS%fldno
Expand Down