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dozeuv_stochy.f
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!>@brief The module 'dodeuv_stochy_mod' contains the subroutine dezouv_stochy
!
module dozeuv_stochy_mod
implicit none
contains
!>@brief The subroutine 'dezouv_stochy' caculates odd u and even v winds harmonics from the odd harmonics
! of divergence and even harmonics of vorticty
!>@details This code is taken from the legacy spectral GFS
subroutine dozeuv_stochy(dod,zev,uod,vev,epsedn,epsodn,
& snnp1ev,snnp1od,ls_node)
cc
use stochy_resol_def
use spectral_layout_mod
use kinddef
implicit none
cc
real(kind_dbl_prec) dod(len_trio_ls,2)
real(kind_dbl_prec) zev(len_trie_ls,2)
real(kind_dbl_prec) uod(len_trio_ls,2)
real(kind_dbl_prec) vev(len_trie_ls,2)
cc
real(kind_dbl_prec) epsedn(len_trie_ls)
real(kind_dbl_prec) epsodn(len_trio_ls)
cc
real(kind_dbl_prec) snnp1ev(len_trie_ls)
real(kind_dbl_prec) snnp1od(len_trio_ls)
cc
integer ls_node(ls_dim,3)
cc
!cmr ls_node(1,1) ... ls_node(ls_max_node,1) : values of L
!cmr ls_node(1,2) ... ls_node(ls_max_node,2) : values of jbasev
!cmr ls_node(1,3) ... ls_node(ls_max_node,3) : values of jbasod
cc
integer l,locl,n
cc
integer indev,indev1,indev2
integer indod,indod1,indod2
integer inddif
cc
real(kind_dbl_prec) rl
cc
real(kind_dbl_prec) cons0 !constant
cc
integer indlsev,jbasev
integer indlsod,jbasod
real(kind_evod) rerth
cc
include 'function2'
cc
cc
cc......................................................................
cc
cc
cons0 = 0.d0 !constant
rerth =6.3712e+6 ! radius of earth (m)
cc
cc
do locl=1,ls_max_node
l=ls_node(locl,1)
jbasev=ls_node(locl,2)
cc
vev(indlsev(l,l),1) = cons0 !constant
vev(indlsev(l,l),2) = cons0 !constant
cc
cc
enddo
cc
cc......................................................................
cc
do locl=1,ls_max_node
l=ls_node(locl,1)
jbasev=ls_node(locl,2)
jbasod=ls_node(locl,3)
indev1 = indlsev(L,L)
if (mod(L,2).eq.mod(jcap+1,2)) then
indev2 = indlsev(jcap-1,L)
else
indev2 = indlsev(jcap ,L)
endif
indod1 = indlsod(l+1,l)
inddif = indev1 - indod1
cc
do indev = indev1 , indev2
cc
uod(indev-inddif,1) = -epsodn(indev-inddif)
x * zev(indev,1)
cc
uod(indev-inddif,2) = -epsodn(indev-inddif)
x * zev(indev,2)
cc
enddo
cc
enddo
cc
cc......................................................................
cc
do locl=1,ls_max_node
l=ls_node(locl,1)
jbasev=ls_node(locl,2)
jbasod=ls_node(locl,3)
indev1 = indlsev(L,L) + 1
if (mod(L,2).eq.mod(jcap+1,2)) then
indev2 = indlsev(jcap+1,L)
else
indev2 = indlsev(jcap ,L)
endif
indod1 = indlsod(l+1,l)
inddif = indev1 - indod1
cc
do indev = indev1 , indev2
cc
vev(indev,1) = epsedn(indev)
x * dod(indev-inddif,1)
cc
vev(indev,2) = epsedn(indev)
x * dod(indev-inddif,2)
cc
enddo
cc
enddo
cc
cc......................................................................
cc
do locl=1,ls_max_node
l=ls_node(locl,1)
jbasod=ls_node(locl,3)
indod1 = indlsod(L+1,L)
if (mod(L,2).eq.mod(jcap+1,2)) then
indod2 = indlsod(jcap ,L)
else
indod2 = indlsod(jcap+1,L) - 1
endif
if ( l .ge. 1 ) then
rl = l
do indod = indod1 , indod2
cc u(l,n)=-i*l*d(l,n)/(n*(n+1))
cc
uod(indod,1) = uod(indod,1)
1 + rl * dod(indod,2)
2 / snnp1od(indod)
cc
uod(indod,2) = uod(indod,2)
1 - rl * dod(indod,1)
2 / snnp1od(indod)
cc
enddo
endif
cc
enddo
cc
cc......................................................................
cc
do locl=1,ls_max_node
l=ls_node(locl,1)
jbasev=ls_node(locl,2)
indev1 = indlsev(L,L)
if (mod(L,2).eq.mod(jcap+1,2)) then
indev2 = indlsev(jcap-1,L)
else
indev2 = indlsev(jcap ,L)
endif
if ( l .ge. 1 ) then
rl = l
do indev = indev1 , indev2
cc u(l,n)=-i*l*d(l,n)/(n*(n+1))
cc
vev(indev,1) = vev(indev,1)
1 + rl * zev(indev,2)
2 / snnp1ev(indev)
cc
vev(indev,2) = vev(indev,2)
1 - rl * zev(indev,1)
2 / snnp1ev(indev)
cc
enddo
endif
cc
enddo
cc
cc......................................................................
cc
do locl=1,ls_max_node
l=ls_node(locl,1)
jbasev=ls_node(locl,2)
jbasod=ls_node(locl,3)
indev1 = indlsev(L,L) + 1
if (mod(L,2).eq.mod(jcap+1,2)) then
indev2 = indlsev(jcap-1,L)
else
indev2 = indlsev(jcap ,L)
endif
indod1 = indlsod(l+1,l)
inddif = indev1 - indod1
cc
do indev = indev1 , indev2
cc
uod(indev-inddif,1) = uod(indev-inddif,1)
1 + epsedn(indev) * zev(indev ,1)
cc
uod(indev-inddif,2) = uod(indev-inddif,2)
1 + epsedn(indev) * zev(indev ,2)
cc
enddo
cc
enddo
cc
cc......................................................................
cc
do locl=1,ls_max_node
l=ls_node(locl,1)
jbasev=ls_node(locl,2)
jbasod=ls_node(locl,3)
indev1 = indlsev(L,L)
if (mod(L,2).eq.mod(jcap+1,2)) then
indev2 = indlsev(jcap+1,L) - 1
else
indev2 = indlsev(jcap ,L) - 1
endif
indod1 = indlsod(l+1,l)
inddif = indev1 - indod1
cc
do indev = indev1 , indev2
cc
vev(indev,1) = vev(indev ,1)
1 - epsodn(indev-inddif) * dod(indev-inddif,1)
cc
vev(indev,2) = vev(indev ,2)
1 - epsodn(indev-inddif) * dod(indev-inddif,2)
cc
enddo
cc
enddo
cc
cc......................................................................
cc
cc
do locl=1,ls_max_node
l=ls_node(locl,1)
jbasev=ls_node(locl,2)
jbasod=ls_node(locl,3)
indev1 = indlsev(L,L)
indod1 = indlsod(L+1,L)
if (mod(L,2).eq.mod(jcap+1,2)) then
indev2 = indlsev(jcap+1,L)
indod2 = indlsod(jcap ,L)
else
indev2 = indlsev(jcap ,L)
indod2 = indlsod(jcap+1,L)
endif
do indod = indod1 , indod2
cc
uod(indod,1) = uod(indod,1) * rerth
uod(indod,2) = uod(indod,2) * rerth
cc
enddo
cc
do indev = indev1 , indev2
cc
vev(indev,1) = vev(indev,1) * rerth
vev(indev,2) = vev(indev,2) * rerth
cc
enddo
cc
enddo
cc
return
end
end module dozeuv_stochy_mod