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Rotate vels #614

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Rotate vels #614

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0fe7bdd
Add diags for east, north velocity components.
kshedstrom Apr 29, 2024
6fbb52a
Merge remote-tracking branch 'gfdl/dev/gfdl' into rotate_vels
kshedstrom Apr 30, 2024
9013c59
Fixing the rotated ssu/ssv diagnostics.
kshedstrom Apr 30, 2024
9cabcfd
Add more parentheses
kshedstrom Apr 30, 2024
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18 changes: 18 additions & 0 deletions src/diagnostics/MOM_diagnostics.F90
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Original file line number Diff line number Diff line change
Expand Up @@ -136,6 +136,7 @@ module MOM_diagnostics
integer :: id_sst = -1, id_sst_sq = -1, id_sstcon = -1
integer :: id_sss = -1, id_sss_sq = -1, id_sssabs = -1
integer :: id_ssu = -1, id_ssv = -1
integer :: id_ssu_east = -1, id_ssv_north = -1

! Diagnostic IDs for heat and salt flux fields
integer :: id_fraz = -1
Expand Down Expand Up @@ -1283,6 +1284,8 @@ subroutine post_surface_dyn_diags(IDs, G, diag, sfc_state, ssh)

! Local variables
real, dimension(SZI_(G),SZJ_(G)) :: speed ! The surface speed [L T-1 ~> m s-1]
real :: ssu_east(SZI_(G),SZJ_(G)) ! Surface velocity due east component [L T-1 ~> m s-1]
real :: ssv_north(SZI_(G),SZJ_(G)) ! Surface velocity due north component [L T-1 ~> m s-1]
integer :: i, j, is, ie, js, je

is = G%isc ; ie = G%iec ; js = G%jsc ; je = G%jec
Expand All @@ -1304,6 +1307,17 @@ subroutine post_surface_dyn_diags(IDs, G, diag, sfc_state, ssh)
call post_data(IDs%id_speed, speed, diag, mask=G%mask2dT)
endif

if (IDs%id_ssu_east > 0 .or. IDs%id_ssv_north > 0) then
do j=js,je ; do i=is,ie
ssu_east(i,j) = (0.5*(sfc_state%u(I-1,j) + sfc_state%u(I,j))) * G%cos_rot(i,j) + &
(0.5*(sfc_state%v(i,J-1) + sfc_state%v(i,J))) * G%sin_rot(i,j)
ssv_north(i,j) = - (0.5*(sfc_state%u(I-1,j) + sfc_state%u(I,j))) * G%sin_rot(i,j) + &
(0.5*(sfc_state%v(i,J-1) + sfc_state%v(i,J))) * G%cos_rot(i,j)
enddo ; enddo
if (IDs%id_ssu_east > 0 ) call post_data(IDs%id_ssu_east, ssu_east, diag, mask=G%mask2dT)
if (IDs%id_ssv_north > 0 ) call post_data(IDs%id_ssv_north, ssv_north, diag, mask=G%mask2dT)
endif

end subroutine post_surface_dyn_diags


Expand Down Expand Up @@ -1912,6 +1926,10 @@ subroutine register_surface_diags(Time, G, US, IDs, diag, tv)
'Sea Surface Meridional Velocity', 'm s-1', conversion=US%L_T_to_m_s)
IDs%id_speed = register_diag_field('ocean_model', 'speed', diag%axesT1, Time, &
'Sea Surface Speed', 'm s-1', conversion=US%L_T_to_m_s)
IDs%id_ssu_east = register_diag_field('ocean_model', 'ssu_east', diag%axesT1, Time, &
'Eastward velocity', 'm s-1', conversion=US%L_T_to_m_s)
IDs%id_ssv_north = register_diag_field('ocean_model', 'ssv_north', diag%axesT1, Time, &
'Northward velocity', 'm s-1', conversion=US%L_T_to_m_s)

if (associated(tv%T)) then
IDs%id_sst = register_diag_field('ocean_model', 'SST', diag%axesT1, Time, &
Expand Down
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