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GEOS_FV3_Utilities.F90
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GEOS_FV3_Utilities.F90
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module GEOS_FV3_UtilitiesMod
implicit none
private
public :: a2d2c
contains
subroutine A2D2C(U,V,npz,getC)
! Move A-Grid winds/tendencies oriented on lat/lon to the D-grid, or Optionally C-grid cubed-sphere orientation
! will return d-grid winds unless user asks for c-grid winds
use mpp_domains_mod, only: mpp_update_domains, mpp_get_boundary, DGRID_NE
use mpp_parameter_mod, only: AGRID
use FV_StateMod, only: fv_atm
use fv_arrays_mod, only: REAL4, REAL8, FVPRC
use fv_mp_mod, only: is,js,ie,je,isd,jsd,ied,jed,ng
use sw_core_mod, only: d2a2c_vect
implicit none
real, intent(INOUT) :: U(:,:,:)
real, intent(INOUT) :: V(:,:,:)
integer, intent( IN) :: npz
logical, intent( IN) :: getC
!local variables
integer :: i,j,k, im2,jm2
real(REAL8) :: ud(is:ie,js:je+1,npz)
real(REAL8) :: vd(is:ie+1,js:je,npz)
real(FVPRC) :: ut(isd:ied, jsd:jed)
real(FVPRC) :: vt(isd:ied, jsd:jed)
real(REAL8) :: v3(is-1:ie+1,js-1:je+1,3)
real(REAL8) :: ue(is-1:ie+1,js :je+1,3) ! 3D winds at edges
real(REAL8) :: ve(is :ie+1,js-1:je+1,3) ! 3D winds at edges
real(REAL8), dimension(is:ie):: ut1, ut2, ut3
real(REAL8), dimension(js:je):: vt1, vt2, vt3
real(FVPRC) :: uctemp(isd:ied+1,jsd:jed ,npz)
real(FVPRC) :: vctemp(isd:ied ,jsd:jed+1,npz)
real(FVPRC) :: utemp(isd:ied ,jsd:jed+1,npz)
real(FVPRC) :: vtemp(isd:ied+1,jsd:jed ,npz)
real(FVPRC) :: uatemp(isd:ied,jsd:jed,npz)
real(FVPRC) :: vatemp(isd:ied,jsd:jed,npz)
!#else
! real*8 :: uctemp(isd:ied+1,jsd:jed ,npz)
!! real*8 :: vctemp(isd:ied ,jsd:jed+1,npz)
!#endif
real(FVPRC) :: wbuffer(js:je,npz)
real(FVPRC) :: sbuffer(is:ie,npz)
real(FVPRC) :: ebuffer(js:je,npz)
real(FVPRC) :: nbuffer(is:ie,npz)
integer :: npx, npy
integer :: STATUS
npx = FV_Atm(1)%npx
npy = FV_Atm(1)%npy
uatemp = 0.0d0
vatemp = 0.0d0
uatemp(is:ie,js:je,:) = U
vatemp(is:ie,js:je,:) = V
im2 = (npx-1)/2
jm2 = (npy-1)/2
! Cubed-Sphere
call mpp_update_domains(uatemp, FV_Atm(1)%domain, complete=.false.)
call mpp_update_domains(vatemp, FV_Atm(1)%domain, complete=.true.)
do k=1, npz
! Compute 3D wind tendency on A grid
do j=js-1,je+1
do i=is-1,ie+1
v3(i,j,1) = uatemp(i,j,k)*fv_atm(1)%gridstruct%vlon(i,j,1) + vatemp(i,j,k)*fv_atm(1)%gridstruct%vlat(i,j,1)
v3(i,j,2) = uatemp(i,j,k)*fv_atm(1)%gridstruct%vlon(i,j,2) + vatemp(i,j,k)*fv_atm(1)%gridstruct%vlat(i,j,2)
v3(i,j,3) = uatemp(i,j,k)*fv_atm(1)%gridstruct%vlon(i,j,3) + vatemp(i,j,k)*fv_atm(1)%gridstruct%vlat(i,j,3)
enddo
enddo
! A --> D
! Interpolate to cell edges
do j=js,je+1
do i=is-1,ie+1
ue(i,j,1) = v3(i,j-1,1) + v3(i,j,1)
ue(i,j,2) = v3(i,j-1,2) + v3(i,j,2)
ue(i,j,3) = v3(i,j-1,3) + v3(i,j,3)
enddo
enddo
do j=js-1,je+1
do i=is,ie+1
ve(i,j,1) = v3(i-1,j,1) + v3(i,j,1)
ve(i,j,2) = v3(i-1,j,2) + v3(i,j,2)
ve(i,j,3) = v3(i-1,j,3) + v3(i,j,3)
enddo
enddo
! --- E_W edges (for v-wind):
if ( is==1 ) then
i = 1
do j=js,je
if ( j>jm2 ) then
vt1(j) = fv_atm(1)%gridstruct%edge_vect_w(j)*ve(i,j-1,1)+(1.-fv_atm(1)%gridstruct%edge_vect_w(j))*ve(i,j,1)
vt2(j) = fv_atm(1)%gridstruct%edge_vect_w(j)*ve(i,j-1,2)+(1.-fv_atm(1)%gridstruct%edge_vect_w(j))*ve(i,j,2)
vt3(j) = fv_atm(1)%gridstruct%edge_vect_w(j)*ve(i,j-1,3)+(1.-fv_atm(1)%gridstruct%edge_vect_w(j))*ve(i,j,3)
else
vt1(j) = fv_atm(1)%gridstruct%edge_vect_w(j)*ve(i,j+1,1)+(1.-fv_atm(1)%gridstruct%edge_vect_w(j))*ve(i,j,1)
vt2(j) = fv_atm(1)%gridstruct%edge_vect_w(j)*ve(i,j+1,2)+(1.-fv_atm(1)%gridstruct%edge_vect_w(j))*ve(i,j,2)
vt3(j) = fv_atm(1)%gridstruct%edge_vect_w(j)*ve(i,j+1,3)+(1.-fv_atm(1)%gridstruct%edge_vect_w(j))*ve(i,j,3)
endif
enddo
do j=js,je
ve(i,j,1) = vt1(j)
ve(i,j,2) = vt2(j)
ve(i,j,3) = vt3(j)
enddo
endif
if ( (ie+1)==npx ) then
i = npx
do j=js,je
if ( j>jm2 ) then
vt1(j) = fv_atm(1)%gridstruct%edge_vect_e(j)*ve(i,j-1,1)+(1.-fv_atm(1)%gridstruct%edge_vect_e(j))*ve(i,j,1)
vt2(j) = fv_atm(1)%gridstruct%edge_vect_e(j)*ve(i,j-1,2)+(1.-fv_atm(1)%gridstruct%edge_vect_e(j))*ve(i,j,2)
vt3(j) = fv_atm(1)%gridstruct%edge_vect_e(j)*ve(i,j-1,3)+(1.-fv_atm(1)%gridstruct%edge_vect_e(j))*ve(i,j,3)
else
vt1(j) = fv_atm(1)%gridstruct%edge_vect_e(j)*ve(i,j+1,1)+(1.-fv_atm(1)%gridstruct%edge_vect_e(j))*ve(i,j,1)
vt2(j) = fv_atm(1)%gridstruct%edge_vect_e(j)*ve(i,j+1,2)+(1.-fv_atm(1)%gridstruct%edge_vect_e(j))*ve(i,j,2)
vt3(j) = fv_atm(1)%gridstruct%edge_vect_e(j)*ve(i,j+1,3)+(1.-fv_atm(1)%gridstruct%edge_vect_e(j))*ve(i,j,3)
endif
enddo
do j=js,je
ve(i,j,1) = vt1(j)
ve(i,j,2) = vt2(j)
ve(i,j,3) = vt3(j)
enddo
endif
! N-S edges (for u-wind):
if ( js==1 ) then
j = 1
do i=is,ie
if ( i>im2 ) then
ut1(i) = fv_atm(1)%gridstruct%edge_vect_s(i)*ue(i-1,j,1)+(1.-fv_atm(1)%gridstruct%edge_vect_s(i))*ue(i,j,1)
ut2(i) = fv_atm(1)%gridstruct%edge_vect_s(i)*ue(i-1,j,2)+(1.-fv_atm(1)%gridstruct%edge_vect_s(i))*ue(i,j,2)
ut3(i) = fv_atm(1)%gridstruct%edge_vect_s(i)*ue(i-1,j,3)+(1.-fv_atm(1)%gridstruct%edge_vect_s(i))*ue(i,j,3)
else
ut1(i) = fv_atm(1)%gridstruct%edge_vect_s(i)*ue(i+1,j,1)+(1.-fv_atm(1)%gridstruct%edge_vect_s(i))*ue(i,j,1)
ut2(i) = fv_atm(1)%gridstruct%edge_vect_s(i)*ue(i+1,j,2)+(1.-fv_atm(1)%gridstruct%edge_vect_s(i))*ue(i,j,2)
ut3(i) = fv_atm(1)%gridstruct%edge_vect_s(i)*ue(i+1,j,3)+(1.-fv_atm(1)%gridstruct%edge_vect_s(i))*ue(i,j,3)
endif
enddo
do i=is,ie
ue(i,j,1) = ut1(i)
ue(i,j,2) = ut2(i)
ue(i,j,3) = ut3(i)
enddo
endif
if ( (je+1)==npy ) then
j = npy
do i=is,ie
if ( i>im2 ) then
ut1(i) = fv_atm(1)%gridstruct%edge_vect_n(i)*ue(i-1,j,1)+(1.-fv_atm(1)%gridstruct%edge_vect_n(i))*ue(i,j,1)
ut2(i) = fv_atm(1)%gridstruct%edge_vect_n(i)*ue(i-1,j,2)+(1.-fv_atm(1)%gridstruct%edge_vect_n(i))*ue(i,j,2)
ut3(i) = fv_atm(1)%gridstruct%edge_vect_n(i)*ue(i-1,j,3)+(1.-fv_atm(1)%gridstruct%edge_vect_n(i))*ue(i,j,3)
else
ut1(i) = fv_atm(1)%gridstruct%edge_vect_n(i)*ue(i+1,j,1)+(1.-fv_atm(1)%gridstruct%edge_vect_n(i))*ue(i,j,1)
ut2(i) = fv_atm(1)%gridstruct%edge_vect_n(i)*ue(i+1,j,2)+(1.-fv_atm(1)%gridstruct%edge_vect_n(i))*ue(i,j,2)
ut3(i) = fv_atm(1)%gridstruct%edge_vect_n(i)*ue(i+1,j,3)+(1.-fv_atm(1)%gridstruct%edge_vect_n(i))*ue(i,j,3)
endif
enddo
do i=is,ie
ue(i,j,1) = ut1(i)
ue(i,j,2) = ut2(i)
ue(i,j,3) = ut3(i)
enddo
endif
! Update:
do j=js,je+1
do i=is,ie
ud(i,j,k) = 0.5*( ue(i,j,1)*fv_atm(1)%gridstruct%es(1,i,j,1) + &
ue(i,j,2)*fv_atm(1)%gridstruct%es(2,i,j,1) + &
ue(i,j,3)*fv_atm(1)%gridstruct%es(3,i,j,1) )
enddo
enddo
do j=js,je
do i=is,ie+1
vd(i,j,k) = 0.5*( ve(i,j,1)*fv_atm(1)%gridstruct%ew(1,i,j,2) + &
ve(i,j,2)*fv_atm(1)%gridstruct%ew(2,i,j,2) + &
ve(i,j,3)*fv_atm(1)%gridstruct%ew(3,i,j,2) )
enddo
enddo
enddo ! k-loop
if (getC) then
! Now we have D-Grid winds, need to make call to d2a2c_vect
utemp = 0.0d0
vtemp = 0.0d0
utemp(is:ie,js:je,:) = ud(is:ie,js:je,:)
vtemp(is:ie,js:je,:) = vd(is:ie,js:je,:)
! update shared edges
call mpp_get_boundary(utemp, vtemp, FV_Atm(1)%domain, &
wbuffery=wbuffer, ebuffery=ebuffer, &
sbufferx=sbuffer, nbufferx=nbuffer, &
gridtype=DGRID_NE, complete=.true. )
do k=1,npz
do i=is,ie
utemp(i,je+1,k) = nbuffer(i,k)
enddo
do j=js,je
vtemp(ie+1,j,k) = ebuffer(j,k)
enddo
enddo
call mpp_update_domains(utemp, vtemp, FV_Atm(1)%domain, gridtype=DGRID_NE, complete=.true.)
do k=1,npz
call d2a2c_vect(utemp(:,:,k), vtemp(:,:,k), &
uatemp(:,:,k), vatemp(:,:,k), &
uctemp(:,:,k), vctemp(:,:,k), ut, vt, .true., &
fv_atm(1)%gridstruct,fv_atm(1)%bd,npx,npy,.false.,0)
enddo
U(:,:,:) = uctemp(is:ie,js:je,:)
V(:,:,:) = vctemp(is:ie,js:je,:)
else
! return d-grid winds
u = ud(is:ie,js:je,:)
v = vd(is:ie,js:je,:)
end if
end subroutine A2D2C
end module GEOS_FV3_UtilitiesMod