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mod_stokes.F90
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mod_stokes.F90
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#if defined(ROW_LAND)
#define SEA_P .true.
#define SEA_U .true.
#define SEA_V .true.
#elif defined(ROW_ALLSEA)
#define SEA_P allip(j).or.ip(i,j).ne.0
#define SEA_U alliu(j).or.iu(i,j).ne.0
#define SEA_V alliv(j).or.iv(i,j).ne.0
#else
#define SEA_P ip(i,j).ne.0
#define SEA_U iu(i,j).ne.0
#define SEA_V iv(i,j).ne.0
#endif
module mod_stokes
use mod_xc ! HYCOM communication interface
use mod_cb_arrays ! HYCOM saved arrays
!
implicit none
!
! --- HYCOM Stokes Drift from external data files
!
logical, parameter, private :: debug_stokes=.false. !usually .false.
!
! Logical flags for Stokes Drift Effects
! The modification of the turbulent viscosity near the surface
! has been implemented following:
! - Craig & Banner + Ardhuin-Filipot-Perenne
! - Uchiyama-McWilliams-Shchepetkin
!
logical, save, public :: &
stdflg, & ! Stokes Drift Velocities: TRUE/FALSE
stdsur, & ! Stokes Drift Surface Stresses: TRUE/FALSE (dissipation due to breaking and rolling)
stdbot, & ! Stokes Drift Bottom Stress: TRUE/FALSE (dissipation due to bottom friction)
stdarc ! Stokes Drift Velocities in Archive TRUE/FALSE
!
! Constant values
! Number of fixed interface depths for Stokes input
!
integer, save, public :: &
nsdzi, & ! Number of fixed interface depths for Stokes input
langmr ! Langmuir turb enhancement (KPP) 0: None 1:McWilliams-Sulliva 2:Smyth 3:McWilliams-Harcourt 4:Takaya
! Arrays holding Surface Stokes Velocities
real, allocatable, dimension(:,:), &
save, public :: &
usds, & ! Surface Stokes Drift U Velocity, p-grid
vsds ! Surface Stokes Drift V Velocity, p-grid
! -U- & -V- grid Arrays holding Vertically averaged Stokes Velocities
real, allocatable, dimension(:,:), &
save, public :: &
usdbavg, & ! Vertical average Stokes Drift U Velocity, u-grid
vsdbavg ! Vertical average Stokes Drift V Velocity, v-grid
! Arrays holding Stokes Drift Velocities on U and V grids
real, allocatable, dimension(:,:,:), &
save, public :: &
usd, & ! Stokes Drift U Velocity, u-grid
vsd ! Stokes Drift V Velocity, v-grid
! Arrays holding Stokes Drift Velocities on -p- grids
real, allocatable, dimension(:,:,:), &
save, public :: &
usdp, & ! Stokes Drift U Velocity, p-grid
vsdp ! Stokes Drift V Velocity, p-grid
! Arrays to hold Input Stokes Drift Velocity
real, allocatable, dimension(:), &
save, private :: &
sdzi ! Input Stokes Drift layer depths
real, allocatable, dimension(:,:,:,:), &
save, private :: &
usdz, & ! Stokes Drift U Velocity for fixed layers, p-grid
vsdz ! Stokes Drift V Velocity for fixed layers, p-grid
! Array holding the wave-induced mean pressure
real, allocatable, dimension(:,:,:), &
save, public :: &
sj ! wave-induced mean pressure on pressure grid
! Arrays holding the horizontal derivatives of the vertical position of the middle of the layer
!
! real, allocatable, dimension(:,:,:),
! & save, public ::
! & dzdx, ! derivative of z with respect to x
! & dzdy ! derivative of z with respect to y
! Arrays used to calculate the dissipations
real, allocatable, dimension(:,:,:), &
save, public :: &
sdka, & ! frequency as a function ot time and space (=sdk)
wave_dir, & ! main wave propagation direction
h_sig, & ! significant wave height
eps_brk ! wave breaking dissipation rate
! Dissipations (bottom and breakin)
real, allocatable, dimension(:,:,:), &
save, public :: &
wave_bdx(:,:,:), & ! Bottom dissipation
wave_bdy(:,:,:), & ! Bottom dissipation
wave_brkx(:,:,:), & ! Dissipation by breaking
wave_brky(:,:,:) ! Dissipation by breaking
! Arrays used for the parameterization of the vertical mixing
real, allocatable, dimension(:,:,:), &
save, public :: &
phi_ocw, & ! Turbulent kinetic energy flux (notation from WW3)
z0topw, & ! wind sea significant height(if stz0tp=1) or surface roughness
ustarw3w, & ! Velocity scale from WW3
difx_wave ! Vertical diffusion enhancement due to wave breaking (Uchiyama et al.)
real, allocatable, dimension(:,:), &
save, public :: &
phi_oc, & ! Turbulent kinetic energy flux (notation from WW3)
alpha, & ! Wave energy factor from WW3
z0top, & ! Surface roughness from WW3
ustarw3 ! Velocity scale from WW3
!
! Weights for holding values during a barotropic time step.
real, save, public :: &
ws0, &
ws1
! Stokes indexes
integer, save, public :: &
ls0, &
ls1
contains
!*********************************************************************************************
subroutine stokes_set(dtime)
implicit none
!
real*8 dtime
!
! --- Stokes Drift velocity setup
if (mnproc.eq.1) then
write(6,*)'=================================================='
write(6,*)' In mod_stokes.F allocating arrays!'
write(6,*)'nbdy,idm,jdm,kdm = ',nbdy,idm,jdm,kdm
write(6,*)'=================================================='
endif !1st tile
!
! --- Allocate Stokes Drift Velocity arrays used in rest of HYCOM
!
allocate( usd(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy,kdm), &
vsd(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy,kdm))
call mem_stat_add( 2*(idm+2*nbdy)*(jdm+2*nbdy)*kdm )
usd(:,:,:) = 0.0
vsd(:,:,:) = 0.0
allocate( usdp(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy,kdm), &
vsdp(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy,kdm))
call mem_stat_add( 2*(idm+2*nbdy)*(jdm+2*nbdy)*kdm )
usdp(:,:,:) = 0.0
vsdp(:,:,:) = 0.0
allocate( usdbavg(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy), &
vsdbavg(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy))
call mem_stat_add( 2*(idm+2*nbdy)*(jdm+2*nbdy) )
usdbavg(:,:) = 0.0
vsdbavg(:,:) = 0.0
allocate( usds(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy), &
vsds(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy))
call mem_stat_add( 2*(idm+2*nbdy)*(jdm+2*nbdy) )
usds(:,:) = 0.0
vsds(:,:) = 0.0
! allocate( dzdx(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy,kdm),
! & dzdy(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy,kdm))
! call mem_stat_add( 2*(idm+2*nbdy)*(jdm+2*nbdy)*kdm )
! dzdx(:,:,:) = 0.0
! dzdy(:,:,:) = 0.0
!
ws0 = -99.0
ws1 = -99.0
if (stdflg) then
ls0 = 1
ls1 = 2
!
! --- Read in Stokes Drift profile arrays for current model start time
!
allocate( sdzi(nsdzi) )
allocate( usdz(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy,2,nsdzi), &
vsdz(1-nbdy:idm+nbdy,1-nbdy:jdm+nbdy,2,nsdzi))
call mem_stat_add( 2*(idm+2*nbdy)*(jdm+2*nbdy)*2*nsdzi )
usdz(:,:,:,:) = 0.0
vsdz(:,:,:,:) = 0.0
call stokes_forfun(dtime,1)
if (mnproc.eq.1) then
write (lp,*) '...finished initializing Stokes Drift ', &
'velocity Fields'
endif !1st tile
call xcsync(flush_lp)
else
nsdzi=0
if (mnproc.eq.1) then
write (lp,*)'Stokes drift version of HYCOM called with ', &
'stdflg == 0'
write (lp,*)'All Stokes Drift fields are set to zero!'
write (lp,*)'No attempt is made to read WW3 Stokes Drift ', &
'Data'
endif !1st tile
call xcsync(flush_lp)
endif !stdflg:else
return
end subroutine stokes_set
subroutine stokes_forfun(dtime,n)
use mod_xc ! HYCOM communication interface
use mod_za ! HYCOM I/O interface
implicit none
!
real*8 dtime
integer n
!
! Stokes Drift Velocity Fields
!
! --- input for fixed interface depths on the p-grid.
!
! --- I/O and array I/O units 927 and 928 are reserved for the entire run.
!
! --- all input fields much be defined at all grid points
!
real*8 stime(927:928)
!
real*8 dtime0,dtime1
save dtime0,dtime1
!
real scl1,scl2
save scl1,scl2
!
character preambl(5)*79,clinex*80,cliney*80
integer i,ios,iunit,j,lgth,nrec,k,f,fmax
logical sdprnt
real dpthin,sum_u,sum_v,pzb,pzt
!
! --- ws0 negative on first call only.
if (ws0.lt.-1.0) then
!
! --- initialize Stokes fields
!
! --- open all stokes files.
!
if (mnproc.eq.1) then
write (lp,*) ' now initializing Stokes Drift fields ...'
endif !1st tile
call xcsync(flush_lp)
!
lgth = len_trim(flnmfor)
!
call zaiopf(flnmfor(1:lgth)//'forcing.stokex.a', 'old', 927)
if (mnproc.eq.1) then ! .b file from 1st tile only
open (unit=uoff+927,file=flnmfor(1:lgth)//'forcing.stokex.b', &
status='old', action='read')
read (uoff+927,'(a79)') preambl
endif !1st tile
call preambl_print(preambl)
!
call zaiopf(flnmfor(1:lgth)//'forcing.stokey.a', 'old', 928)
if (mnproc.eq.1) then ! .b file from 1st tile only
open (unit=uoff+928,file=flnmfor(1:lgth)//'forcing.stokey.b', &
status='old', action='read')
read (uoff+928,'(a79)') preambl
endif !1st tile
call preambl_print(preambl)
!
! --- read in the Stokes Drift interface depths
!
do k=1,nsdzi
call zagetc(clinex,ios, uoff+927)
if (ios.ne.0) then
if (mnproc.eq.1) then
write(lp,*)
write(lp,*) 'error in stokes_forfun -' // &
' hit end of input forcing.stokex'
write(lp,*) 'while reading the stokes depths'
write(lp,*)
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !ios
call zagetc(cliney,ios, uoff+928)
if (ios.ne.0) then
if (mnproc.eq.1) then
write(lp,*)
write(lp,*) 'error in stokes_forfun -' // &
' hit end of input forcing.stokey'
write(lp,*) 'while reading the stokes depths'
write(lp,*)
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !ios
!
if (clinex.ne.cliney) then
if (mnproc.eq.1) then
write(lp,*)
write(lp,*) 'error in stokes_forfun -' // &
' x and y depths are different'
write(lp,*) 'for interface number ',k
write(lp,'(a)') trim(clinex)
write(lp,'(a)') trim(cliney)
write(lp,*)
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !clinex.ne.cliney
read (clinex,*,iostat=ios) sdzi(k)
if (ios.ne.0) then
if (mnproc.eq.1) then
write(lp,*)
write(lp,*) 'error in stokes_forfun -' // &
' hit end of stokes depths in forcing.stokex'
write(lp,*)
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !ios
if (mnproc.eq.1) then
write(lp,'(a)') trim(clinex)
endif !1st tile
sdzi(k) = sdzi(k)*onem !pressure units
if (sdzi(k).lt.sdzi(max(k-1,1))) then
if (mnproc.eq.1) then
write(lp,*)
write(lp,*) 'error in stokes_forfun -' // &
' Stokes depths must be non-decreasing'
write(lp,*)
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !zi.k<zi.k-1
enddo !k
call xcsync(flush_lp)
!
dpthin = 0.001*onemm
if (sdzi(1).ne.0.0 .or. sdzi(2).lt.dpthin) then
if (mnproc.eq.1) then
write(lp,*)
write(lp,*) 'error in stokes_forfun -' // &
' 1st Stokes depth must be 0 and' // &
' 2nd must be positive'
write(lp,*)
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !sdzi(1:2)?
!
! --- [uv]sdz.1 is exactly at the surface,
! --- convert it to a very thin layer by stealing some of layer 2.
sdzi(1) = dpthin
scl2 = sdzi(2)/(sdzi(2)-dpthin) !>1.0
scl1 = scl2-1.0 !positive, near zero
!
! --- skip ahead to the start time.
!
nrec = 0
dtime1 = huge(dtime1)
do ! infinite loop, with exit at end
dtime0 = dtime1
nrec = nrec + 1
do k=1,nsdzi
call zagetc(clinex,ios, uoff+927)
if (ios.ne.0) then
if (mnproc.eq.1) then
write(lp,*)
write(lp,*) 'error in stokes_forfun -' // &
' hit end of input forcing.stokex'
write(lp,*) 'dtime0,dtime1 = ',dtime0,dtime1
write(lp,*) 'dtime = ',dtime
write(lp,*)
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !ios
call zagetc(cliney,ios, uoff+928)
if (ios.ne.0) then
if (mnproc.eq.1) then
write(lp,*)
write(lp,*) 'error in stokes_forfun -' // &
' hit end of input forcing.stokey'
write(lp,*) 'dtime0,dtime1 = ',dtime0,dtime1
write(lp,*) 'dtime = ',dtime
write(lp,*)
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !ios
enddo !k
!
i = index(clinex,'=')
read (clinex(i+1:),*) dtime1
if (nrec.eq.1 .and. dtime1.lt.1462.0d0) then
!
! --- must start after wind day 1462.0, 01/01/1905.
if (mnproc.eq.1) then
write(lp,'(a)') clinex
write(lp,'(/ a,a / a,g15.6 /)') &
'error in stokes_forfun - actual forcing', &
' must start after wind day 1462', &
'dtime1 = ',dtime1
endif !1st tile
call xcstop('(stokes_forfun)')
stop '(stokes_forfun)'
endif !before wind day 1462.0
if (dtime0.le.dtime .and. dtime1.gt.dtime) then
exit
endif
enddo ! infinite loop, with exit above
if (mnproc.eq.1) then ! .b file from 1st tile only
rewind(unit=uoff+927)
read (uoff+927,'(a79)') preambl
do k=1,nsdzi
read (uoff+927,'(a)') clinex
enddo !k
rewind(unit=uoff+928)
read (uoff+928,'(a79)') preambl
do k=1,nsdzi
read (uoff+928,'(a)') cliney
enddo !k
endif
do iunit= 927,928
do i= 1,nrec-2
do k=1,nsdzi
call skmonth(iunit)
enddo
enddo
enddo
do k=1,nsdzi
sdprnt = .true.
! sdprnt = mod(nstep,nsdzi).eq.k-1
call rdpall1(usdz(1-nbdy,1-nbdy,1,k),stime(927),927,sdprnt)
call rdpall1(vsdz(1-nbdy,1-nbdy,1,k),stime(928),928,sdprnt)
enddo !k
dtime0 = dtime1
dtime1 = stime(927)
do k=1,nsdzi
sdprnt = .true.
! sdprnt = mod(nstep,nsdzi).eq.k-1
call rdpall1(usdz(1-nbdy,1-nbdy,1,k),stime(927),927,sdprnt)
call rdpall1(vsdz(1-nbdy,1-nbdy,1,k),stime(928),928,sdprnt)
call xctilr( usdz(1-nbdy,1-nbdy,1,k),1,2, nbdy,nbdy, halo_pv)
call xctilr( vsdz(1-nbdy,1-nbdy,1,k),1,2, nbdy,nbdy, halo_pv)
enddo !k
! --- [uv]sdz.1 is exactly at the surface,
! --- convert it to a very thin layer (modifies [uv]sdz.2).
usdz(:,:,:,2) = scl2*usdz(:,:,:,2) - scl1*usdz(:,:,:,1)
vsdz(:,:,:,2) = scl2*vsdz(:,:,:,2) - scl1*vsdz(:,:,:,1)
!
dtime0 = dtime1
dtime1 = stime(927)
if (mnproc.eq.1) then
write (lp,*)
write (lp,*) ' dtime,dtime0,dtime1 = ',dtime,dtime0,dtime1
write (lp,*)
write (lp,*) ' ...finished initializing Stokes Drift fields'
endif !1st tile
call xcsync(flush_lp)
endif ! initialization
!
if (dtime.gt.dtime1) then
!
! --- get the next set of fields.
!diag if (mnproc.eq.1) then
!diag write(lp,*) 'enter rdpall - ',time,dtime0,dtime1
!diag endif !1st tile
!diag call xcsync(flush_lp)
do k=1,nsdzi
sdprnt = mod(nstep,nsdzi).eq.k-1
call rdpall1(usdz(1-nbdy,1-nbdy,1,k),stime(927),927,sdprnt)
call rdpall1(vsdz(1-nbdy,1-nbdy,1,k),stime(928),928,sdprnt)
call xctilr( usdz(1-nbdy,1-nbdy,2,k),1,1, nbdy,nbdy, halo_pv)
call xctilr( vsdz(1-nbdy,1-nbdy,2,k),1,1, nbdy,nbdy, halo_pv)
enddo !k
! --- [uv]sdz.1 is exactly at the surface,
! --- convert it to a very thin layer (modifies [uv]sdz.2).
usdz(:,:,2,2) = scl2*usdz(:,:,2,2) - scl1*usdz(:,:,2,1)
vsdz(:,:,2,2) = scl2*vsdz(:,:,2,2) - scl1*vsdz(:,:,2,1)
!
dtime0 = dtime1
dtime1 = stime(927)
!diag if (mnproc.eq.1) then
!diag write(lp,*) ' exit rdpall1 - ',time,dtime0,dtime1
!diag endif !1st tile
!diag call xcsync(flush_lp)
endif
!
! --- linear interpolation in time.
ws0 = (dtime1-dtime)/(dtime1-dtime0)
ws1 = 1.0 - ws0
if (debug_stokes) then
if (mnproc.eq.1) then
write(lp,'(a,i2,f20.10,2f10.7)') &
'stokes_forfun - n,dtime,ws0,ws1 = ', &
n,dtime,ws0,ws1
endif !1st tile
call xcsync(flush_lp)
endif !debug
!--------------------------------------------------------------------
! Calculate the p-grid Stokes Drift Arrays
! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
!
! 1. First the Surface Velocity arrays for the Mixed Layer Theories
!
do j=1-nbdy,jj+nbdy
do i=1-nbdy,ii+nbdy
usds(i,j) = ws0*usdz(i,j,1,1) + &
ws1*usdz(i,j,2,1)
vsds(i,j) = ws0*vsdz(i,j,1,1) + &
ws1*vsdz(i,j,2,1)
enddo !i
enddo !j
! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
!
! 2. The -k- layer Average Velocity arrays at the -p- points
!
!$OMP PARALLEL DO PRIVATE(j) &
!$OMP SHARED(n) &
!$OMP SCHEDULE(STATIC,jblk)
do j= 1,jj
call stokes_vertical_j(n,j)
enddo !j
!$OMP END PARALLEL DO
!
!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
! All Stokes Drift Velocity Arrays are now on 'private' -p- grids
! Now calculate the U velocity components on -U- grids
! and V velocity Components on -V- grids
!+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
!
call xctilr(usdp(1-nbdy,1-nbdy,1),1,kk, 1,1, halo_pv)
call xctilr(vsdp(1-nbdy,1-nbdy,1),1,kk, 1,1, halo_pv)
!
!$OMP PARALLEL DO PRIVATE(j,i,k,sum_u,sum_v) &
!$OMP SCHEDULE(STATIC,jblk)
do j=1,jj
do i= 1,ii
if (SEA_U) then
sum_u = 0.0
do k=1,kk
usd(i,j,k)=0.5*(usdp(i,j,k)+usdp(i-1,j,k))
sum_u = sum_u + usd(i,j,k)*dpu(i,j,k,n)
enddo !k
usdbavg(i,j) = sum_u/depthu(i,j)
endif !iu
enddo !i
do i= 1,ii
if (SEA_V) then
sum_v = 0.0
do k=1,kk
vsd(i,j,k)=0.5*(vsdp(i,j,k)+vsdp(i,j-1,k))
sum_v = sum_v + vsd(i,j,k)*dpv(i,j,k,n)
enddo !k
vsdbavg(i,j) = sum_v/depthv(i,j)
endif !iv
enddo !i
enddo !j
!$OMP END PARALLEL DO
!
if (debug_stokes) then
103 format (i9,2i5,a)
104 format (30x,i3,2f8.4,f9.3,f9.2)
if (itest.gt.0 .and. jtest.gt.0) then
write (lp,103) nstep,itest+i0,jtest+j0, &
' stokes_forfun: usdz vsdz thkns dpth'
pzb = 0.0
do k= 1,nsdzi
pzt = pzb
pzb = min(sdzi(k),p(itest,jtest,kk+1))*qonem
write (lp,104) &
k, &
ws0*usdz(itest,jtest,1,k)+ws1*usdz(itest,jtest,2,k), &
ws0*vsdz(itest,jtest,1,k)+ws1*vsdz(itest,jtest,2,k), &
pzb-pzt,pzb
if (pzt.eq.p(itest,jtest,kk+1)*qonem) then
exit
endif
enddo !k
!
write (lp,103) nstep,itest+i0,jtest+j0, &
' stokes_forfun: usdp vsdp thkns dpth'
pzb = 0.0
do k= 1,kk
pzt = pzb
pzb = min(pzt+dp(itest,jtest,k,n)*qonem, &
p(itest,jtest,kk+1)*qonem)
write (lp,104) &
k, &
usdp(itest,jtest,k),vsdp(itest,jtest,k), &
pzb-pzt,pzb
if (pzt.eq.p(itest,jtest,kk+1)*qonem) then
exit
endif
enddo !k
!
write (lp,103) nstep,itest+i0,jtest+j0, &
' stokes_forfun: usd vsd thkns dpth'
write (lp,104) &
0,usdbavg(itest,jtest),vsdbavg(itest,jtest), &
0.0,p(itest,jtest,kk+1)*qonem
pzb = 0.0
do k= 1,kk
pzt = pzb
pzb = min(pzt+dp(itest,jtest,k,n)*qonem, &
p(itest,jtest,kk+1)*qonem)
write (lp,104) &
k, &
usd(itest,jtest,k),vsd(itest,jtest,k), &
pzb-pzt,pzb
if (pzt.eq.p(itest,jtest,kk+1)*qonem) then
exit
endif
enddo !k
endif !test
endif !debug
!
! Now ensure all Stokes Drift Velocity Fields are properly defined on Halos
!
call xctilr(usd( 1-nbdy,1-nbdy,1),1,kk, 6,6, halo_uv)
call xctilr(vsd( 1-nbdy,1-nbdy,1),1,kk, 6,6, halo_vv)
call xctilr(usdbavg(1-nbdy,1-nbdy) ,1, 1, 6,6, halo_uv)
call xctilr(vsdbavg(1-nbdy,1-nbdy) ,1, 1, 6,6, halo_vv)
return
end subroutine stokes_forfun
subroutine stokes_vertical_j(n,j)
use mod_xc ! HYCOM communication interface
use mod_za ! HYCOM I/O interface
implicit none
!
integer n,j
!
! --- --------------------------------------------
! --- interpolate Stokes in vertical, single j-row
! --- --------------------------------------------
!
integer i,k
real dpthin
logical lcm(nsdzi) !use PCM for some layers?
real s1d(nsdzi,2), & !input Stokes fields
f1d(kdm, 2), & !model Stokes fields
c1d(nsdzi,2), & !interpolation coefficients
dpi( nsdzi), & !input layer thicknesses, >= dpthin
dprs(nsdzi), & !input layer thicknesses
pres(nsdzi+1), & !input layer interfaces
prsf(kdm+1) !model layer interfaces
!
dpthin = 0.001*onemm
lcm(:) = .false.
!
do i= 1,ii
if (SEA_P) then
! --- 1-d existing arrays
pres(1)=0.0
do k=1,nsdzi
s1d(k,1) = ws0*usdz(i,j,1,k) + &
ws1*usdz(i,j,2,k)
s1d(k,2) = ws0*vsdz(i,j,1,k) + &
ws1*vsdz(i,j,2,k)
pres(k+1)=min(sdzi(k),p(i,j,kk+1))
dprs(k) =pres(k+1)-pres(k)
dpi( k) =max(dprs(k),dpthin)
enddo !k 1:nsdzi
prsf(1)=0.0
do k=1,kk
prsf(k+1) = min(prsf(k)+dp(i,j,k,n),p(i,j,kk+1))
enddo !k 1:kk
! --- remap
call hybgen_plm_coefs(s1d, dpi, lcm,c1d, &
nsdzi, 2,dpthin)
call hybgen_plm_remap(s1d,pres,dprs, c1d, &
f1d,prsf,nsdzi,kk,2,dpthin)
! --- 1-d new arrays
do k=1,kk
usdp(i,j,k) = f1d(k,1)
vsdp(i,j,k) = f1d(k,2)
enddo !k 1:kk
endif !ip
enddo !i
return
end subroutine stokes_vertical_j
end module mod_stokes
!> May 2014 - use land/sea masks (e.g. ip) to skip land
!> Aug 2015 - added stdarc