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mod_cmip6_cesm.F90
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mod_cmip6_cesm.F90
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!::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
!
! This file is part of ICTP RegCM.
!
! ICTP RegCM is free software: you can redistribute it and/or modify
! it under the terms of the GNU General Public License as published by
! the Free Software Foundation, either version 3 of the License, or
! (at your option) any later version.
!
! ICTP RegCM is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! You should have received a copy of the GNU General Public License
! along with ICTP RegCM. If not, see <http://www.gnu.org/licenses/>.
!
!::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
module mod_cmip6_cesm
use mod_intkinds
use mod_realkinds
use mod_message
use mod_date
use mod_stdio
use mod_memutil
use mod_kdinterp
use mod_cmip6_helper
use netcdf
implicit none
private
character(len=*) , parameter :: cesm_version = 'v20190514'
character(len=*) , parameter :: cesm_version1 = 'v20200528'
character(len=*) , parameter :: cesm_version2 = 'v20200210'
public :: read_3d_cesm , read_2d_cesm , read_fx_cesm , read_sst_cesm
contains
subroutine read_hcoord_cesm(ncid,lon,lat)
implicit none
integer(ik4) , intent(in) :: ncid
real(rkx) , pointer , dimension(:) , intent(inout) :: lon , lat
integer(ik4) :: istatus , idimid , ivarid
integer(ik4) :: nlon , nlat
istatus = nf90_inq_dimid(ncid,'lon',idimid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find lon dim')
istatus = nf90_inquire_dimension(ncid,idimid,len=nlon)
call cmip6_error(istatus,__FILE__,__LINE__,'Error inquire lon dim')
istatus = nf90_inq_dimid(ncid,'lat',idimid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find lat dim')
istatus = nf90_inquire_dimension(ncid,idimid,len=nlat)
call cmip6_error(istatus,__FILE__,__LINE__,'Error inquire lat dim')
call getmem1d(lon,1,nlon,'cmip6_cesm:lon')
call getmem1d(lat,1,nlat,'cmip6_cesm:lat')
istatus = nf90_inq_varid(ncid,'lon',ivarid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find lon var')
istatus = nf90_get_var(ncid,ivarid,lon)
call cmip6_error(istatus,__FILE__,__LINE__,'Error read lon var')
istatus = nf90_inq_varid(ncid,'lat',ivarid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find lat var')
istatus = nf90_get_var(ncid,ivarid,lat)
call cmip6_error(istatus,__FILE__,__LINE__,'Error read lat var')
end subroutine read_hcoord_cesm
subroutine read_hcoord_sst_cesm(ncid,lon,lat)
implicit none
integer(ik4) , intent(in) :: ncid
real(rkx) , pointer , dimension(:,:) , intent(inout) :: lon , lat
integer(ik4) :: istatus , idimid , ivarid
integer(ik4) :: nlon , nlat
istatus = nf90_inq_dimid(ncid,'nlon',idimid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find lon nlon')
istatus = nf90_inquire_dimension(ncid,idimid,len=nlon)
call cmip6_error(istatus,__FILE__,__LINE__,'Error inquire nlon dim')
istatus = nf90_inq_dimid(ncid,'nlat',idimid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find nlat dim')
istatus = nf90_inquire_dimension(ncid,idimid,len=nlat)
call cmip6_error(istatus,__FILE__,__LINE__,'Error inquire nlat dim')
call getmem2d(lon,1,nlon,1,nlat,'cmip6_cesm:lon')
call getmem2d(lat,1,nlon,1,nlat,'cmip6_cesm:lat')
istatus = nf90_inq_varid(ncid,'lon',ivarid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find lon var')
istatus = nf90_get_var(ncid,ivarid,lon)
call cmip6_error(istatus,__FILE__,__LINE__,'Error read lon var')
istatus = nf90_inq_varid(ncid,'lat',ivarid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find lat var')
istatus = nf90_get_var(ncid,ivarid,lat)
call cmip6_error(istatus,__FILE__,__LINE__,'Error read lat var')
end subroutine read_hcoord_sst_cesm
subroutine read_vcoord_cesm(ncid,a,b,p0)
implicit none
integer(ik4) , intent(in) :: ncid
real(rkx) , pointer , dimension(:) , intent(inout) :: a , b
real(rkx) , intent(out) :: p0
integer(ik4) :: istatus , idimid , ivarid
integer(ik4) :: nlev
istatus = nf90_inq_dimid(ncid,'lev',idimid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find lev dim')
istatus = nf90_inquire_dimension(ncid,idimid,len=nlev)
call cmip6_error(istatus,__FILE__,__LINE__,'Error inquire lev dim')
call getmem1d(a,1,nlev,'cmip6_cesm:a')
call getmem1d(b,1,nlev,'cmip6_cesm:b')
istatus = nf90_inq_varid(ncid,'a',ivarid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find a var')
istatus = nf90_get_var(ncid,ivarid,a)
call cmip6_error(istatus,__FILE__,__LINE__,'Error read a var')
istatus = nf90_inq_varid(ncid,'b',ivarid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find b var')
istatus = nf90_get_var(ncid,ivarid,b)
call cmip6_error(istatus,__FILE__,__LINE__,'Error read b var')
istatus = nf90_inq_varid(ncid,'p0',ivarid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find p0 var')
istatus = nf90_get_var(ncid,ivarid,p0)
call cmip6_error(istatus,__FILE__,__LINE__,'Error read p0 var')
end subroutine read_vcoord_cesm
recursive subroutine read_3d_cesm(idate,v,lonlyc)
implicit none
type(rcm_time_and_date) , intent(in) :: idate
type(cmip6_3d_var) , pointer , intent(inout) :: v
logical , optional , intent(in) :: lonlyc
integer(ik4) :: istatus , idimid , it , irec
integer(ik4) :: year , month , day , hour , y1 , y2
character(len=32) :: timecal , timeunit
integer(ik4) , dimension(4) :: istart , icount
real(rk8) , dimension(2) :: times
type(rcm_time_interval) :: tdif
character(len=16) :: ver
if ( v%ncid == -1 ) then
call split_idate(idate, year, month, day, hour)
if ( year < 2010 ) then
if ( v%vname /= 'ta' ) then
ver = cesm_version
else
ver = cesm_version2
end if
y1 = year/10*10
y2 = y1+9
write(v%filename,'(a,i4,a,i4,a)') &
trim(cmip6_path(year,'6hrLev',ver,v%vname)), &
y1, '01010000-', y2, '12311800.nc'
else if ( year >= 2015 .and. year < 2095 ) then
y1 = (year-2015)/10*10 + 2015
y2 = y1+9
write(v%filename,'(a,i4,a,i4,a)') &
trim(cmip6_path(year,'6hrLev',cesm_version1,v%vname)), &
y1, '01010000-', y2, '12311800.nc'
else
if ( idate < 2015010100 ) then
if ( v%vname /= 'ta' ) then
ver = cesm_version
else
ver = cesm_version2
end if
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'6hrLev',ver,v%vname)), &
'201001010000-201501010000.nc'
else
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'6hrLev',cesm_version1,v%vname)), &
'209501010000-210101010000.nc'
end if
end if
#ifdef DEBUG
write(stderr,*) 'Opening ',trim(v%filename)
#endif
istatus = nf90_open(v%filename,nf90_nowrite,v%ncid)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error opening file '//trim(v%filename)//'.')
end if
if ( .not. associated(v%hcoord) ) then
allocate(v%hcoord)
call read_hcoord_cesm(v%ncid,v%hcoord%lon1d,v%hcoord%lat1d)
end if
if ( .not. associated(v%vcoord) ) then
allocate(v%vcoord)
call read_vcoord_cesm(v%ncid,v%vcoord%ak,v%vcoord%bk,v%vcoord%p0)
end if
if ( .not. associated(v%var) ) then
v%ni = size(v%hcoord%lon1d)
v%nj = size(v%hcoord%lat1d)
v%nk = size(v%vcoord%ak)
call getmem3d(v%var,1,v%ni,1,v%nj,1,v%nk,'cmip6:cesm:'//trim(v%vname))
#ifdef DEBUG
write(stderr,*) 'Input shape for ',trim(v%vname),' = ', &
v%ni,'x',v%nj,'x',v%nk
#endif
if ( present(lonlyc) ) then
if ( lonlyc ) return
end if
end if
if ( v%ivar == -1 ) then
istatus = nf90_inq_varid(v%ncid,v%vname,v%ivar)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error searchong '//trim(v%vname)//' var in file '// &
trim(v%filename)//'.')
end if
if ( v%nrec == -1 ) then
istatus = nf90_inq_dimid(v%ncid,'time',idimid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find time dim')
istatus = nf90_inquire_dimension(v%ncid,idimid,len=v%nrec)
call cmip6_error(istatus,__FILE__,__LINE__,'Error inquire time dim')
istatus = nf90_inq_varid(v%ncid,'time',it)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error searching time var in file '//trim(v%filename)//'.')
istatus = nf90_get_att(v%ncid,it,"calendar",timecal)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time attribute calendar in file '//&
trim(v%filename)//'.')
istatus = nf90_get_att(v%ncid,it,"units",timeunit)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time attribute units in file '//trim(v%filename)//'.')
istart(1) = 1
icount(1) = 2
istatus = nf90_get_var(v%ncid,it,times,istart(1:1),icount(1:1))
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time from file '//trim(v%filename)//'.')
v%first_date = timeval2date(times(1),timeunit,timecal)
end if
tdif = idate - v%first_date
irec = nint(tohours(tdif)/6.0) + 1
if ( irec > v%nrec ) then
istatus = nf90_close(v%ncid)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error close file '//trim(v%filename)//'.')
v%ncid = -1
v%ivar = -1
v%nrec = -1
irec = 1
#ifdef DEBUG
write(stderr, *) 'Closed file, switching to the next in series...'
#endif
call read_3d_cesm(idate,v)
end if
istart(1) = 1
istart(2) = 1
istart(3) = 1
istart(4) = irec
icount(1) = size(v%var,1)
icount(2) = size(v%var,2)
icount(3) = size(v%var,3)
icount(4) = 1
istatus = nf90_get_var(v%ncid,v%ivar,v%var,istart,icount)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error read variable '//v%vname//' from '//trim(v%filename)//'.')
end subroutine read_3d_cesm
recursive subroutine read_2d_cesm(idate,v,lonlyc)
implicit none
type(rcm_time_and_date) , intent(in) :: idate
type(cmip6_2d_var) , pointer , intent(inout) :: v
logical , optional , intent(in) :: lonlyc
integer(ik4) :: istatus , idimid , it , irec
integer(ik4) :: y1
integer(ik4) :: year , month , day , hour
character(len=32) :: timecal , timeunit
integer(ik4) , dimension(3) :: istart , icount
real(rk8) , dimension(2) :: times
type(rcm_time_interval) :: tdif
if ( v%ncid == -1 ) then
call split_idate(idate, year, month, day, hour)
if ( year < 2010 ) then
y1 = year/10 * 10
write(v%filename,'(a,i4,a,i4,a)') &
trim(cmip6_path(year,'6hrLev',cesm_version,v%vname)), &
y1,'01010000-',y1+9,'12311800.nc'
else if ( year >= 2015 .and. year < 2095 ) then
y1 = (year-2015)/10*10 + 2015
write(v%filename,'(a,i4,a,i4,a)') &
trim(cmip6_path(year,'6hrLev',cesm_version1,v%vname)), &
y1,'01010000-',y1+9,'12311800.nc'
else
if ( idate < 2015010100 ) then
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'6hrLev',cesm_version,v%vname)), &
'201001010000-201501010000.nc'
else
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'6hrLev',cesm_version1,v%vname)), &
'209501010000-210101010000.nc'
end if
end if
#ifdef DEBUG
write(stderr,*) 'Opening ',trim(v%filename)
#endif
istatus = nf90_open(v%filename,nf90_nowrite,v%ncid)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error opening file '//trim(v%filename)//'.')
end if
if ( .not. associated(v%hcoord) ) then
allocate(v%hcoord)
call read_hcoord_cesm(v%ncid,v%hcoord%lon1d,v%hcoord%lat1d)
end if
if ( .not. associated(v%var) ) then
v%ni = size(v%hcoord%lon1d)
v%nj = size(v%hcoord%lat1d)
call getmem2d(v%var,1,v%ni,1,v%nj,'cmip6:cesm:'//trim(v%vname))
#ifdef DEBUG
write(stderr,*) 'Input shape for ',trim(v%vname),' = ',v%ni,'x',v%nj
#endif
if ( present(lonlyc) ) then
if ( lonlyc ) return
end if
end if
if ( v%ivar == -1 ) then
istatus = nf90_inq_varid(v%ncid,v%vname,v%ivar)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error searchong '//trim(v%vname)//' var in file '// &
trim(v%filename)//'.')
end if
if ( v%nrec == -1 ) then
istatus = nf90_inq_dimid(v%ncid,'time',idimid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find time dim')
istatus = nf90_inquire_dimension(v%ncid,idimid,len=v%nrec)
call cmip6_error(istatus,__FILE__,__LINE__,'Error inquire time dim')
istatus = nf90_inq_varid(v%ncid,'time',it)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error searching time var in file '//trim(v%filename)//'.')
istatus = nf90_get_att(v%ncid,it,"calendar",timecal)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time attribute calendar in file '//&
trim(v%filename)//'.')
istatus = nf90_get_att(v%ncid,it,"units",timeunit)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time attribute units in file '//trim(v%filename)//'.')
istart(1) = 1
icount(1) = 2
istatus = nf90_get_var(v%ncid,it,times,istart(1:1),icount(1:1))
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time from file '//trim(v%filename)//'.')
v%first_date = timeval2date(times(1),timeunit,timecal)
end if
tdif = idate - v%first_date
irec = nint(tohours(tdif)/6.0) + 1
if ( irec > v%nrec ) then
istatus = nf90_close(v%ncid)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error close file '//trim(v%filename)//'.')
v%ncid = -1
v%ivar = -1
v%nrec = -1
irec = 1
#ifdef DEBUG
write(stderr, *) 'Closed file, switching to the next in series...'
#endif
call read_2d_cesm(idate,v)
end if
istart(1) = 1
istart(2) = 1
istart(3) = irec
icount(1) = size(v%var,1)
icount(2) = size(v%var,2)
icount(3) = 1
istatus = nf90_get_var(v%ncid,v%ivar,v%var,istart,icount)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error read variable '//v%vname//' from '//trim(v%filename)//'.')
end subroutine read_2d_cesm
recursive subroutine read_fx_cesm(v)
implicit none
type(cmip6_2d_var) , pointer , intent(inout) :: v
integer(ik4) :: istatus
v%filename = trim(cmip6_fxpath(cesm_version,v%vname))
#ifdef DEBUG
write(stderr,*) 'Opening ',trim(v%filename)
#endif
istatus = nf90_open(v%filename,nf90_nowrite,v%ncid)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error opening file '//trim(v%filename)//'.')
allocate(v%hcoord)
call read_hcoord_cesm(v%ncid,v%hcoord%lon1d,v%hcoord%lat1d)
v%ni = size(v%hcoord%lon1d)
v%nj = size(v%hcoord%lat1d)
call getmem2d(v%var,1,v%ni,1,v%nj,'cmip6:cesm:'//trim(v%vname))
#ifdef DEBUG
write(stderr,*) 'Input shape for ',trim(v%vname),' = ',v%ni,'x',v%nj
#endif
istatus = nf90_inq_varid(v%ncid,v%vname,v%ivar)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error searchong '//trim(v%vname)//' var in file '// &
trim(v%filename)//'.')
istatus = nf90_get_var(v%ncid,v%ivar,v%var)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error read variable '//v%vname//' from '//trim(v%filename)//'.')
istatus = nf90_close(v%ncid)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error close file '//trim(v%filename)//'.')
end subroutine read_fx_cesm
recursive subroutine read_sst_cesm(idate,v,lat,lon)
implicit none
type(rcm_time_and_date) , intent(in) :: idate
type(cmip6_2d_var) , intent(inout) :: v
real(rkx) , pointer , dimension(:,:) , intent(in) :: lon , lat
integer(ik4) :: istatus , idimid , it , irec
integer(ik4) :: year , month , day , hour
character(len=32) :: timecal , timeunit
integer(ik4) , dimension(3) :: istart , icount
real(rk8) , dimension(2) :: times
type(rcm_time_interval) :: tdif
if ( v%ncid == -1 ) then
call split_idate(idate, year, month, day, hour)
if ( idate < 1900010200 ) then
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'Oday',cesm_version,v%vname)), &
'18500102-19000101.nc'
else if ( idate < 1950010200 ) then
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'Oday',cesm_version,v%vname)), &
'19000102-19500101.nc'
else if ( idate < 2000010200 ) then
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'Oday',cesm_version,v%vname)), &
'19500102-20000101.nc'
else if ( idate < 2015010200 ) then
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'Oday',cesm_version,v%vname)), &
'20000102-20150101.nc'
else if ( idate < 2065010200 ) then
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'Oday',cesm_version1,v%vname)), &
'20150102-20650101.nc'
else
write(v%filename,'(a,a)') &
trim(cmip6_path(year,'Oday',cesm_version1,v%vname)), &
'20650102-21010101.nc'
end if
#ifdef DEBUG
write(stderr,*) 'Opening ',trim(v%filename)
#endif
istatus = nf90_open(trim(v%filename),nf90_nowrite,v%ncid)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error opening file '//trim(v%filename)//'.')
end if
if ( .not. associated(v%hcoord) ) then
allocate(v%hcoord)
call read_hcoord_sst_cesm(v%ncid,v%hcoord%lon2d,v%hcoord%lat2d)
call h_interpolator_create(v%hint(1), &
v%hcoord%lat2d,v%hcoord%lon2d,lat,lon)
call getmem2d(v%var,1,size(v%hcoord%lon2d,1), &
1,size(v%hcoord%lat2d,2), &
'cmip6_cesm:'//trim(v%vname))
end if
if ( v%ivar == -1 ) then
istatus = nf90_inq_varid(v%ncid,trim(v%vname),v%ivar)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error searchong '//trim(v%vname)// &
' var in file '//trim(v%filename)//'.')
end if
if ( v%nrec == -1 ) then
istatus = nf90_inq_dimid(v%ncid,'time',idimid)
call cmip6_error(istatus,__FILE__,__LINE__,'Error find time dim')
istatus = nf90_inquire_dimension(v%ncid,idimid,len=v%nrec)
call cmip6_error(istatus,__FILE__,__LINE__,'Error inquire time dim')
istatus = nf90_inq_varid(v%ncid,'time',it)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error searching time var in file '//trim(v%filename)//'.')
istatus = nf90_get_att(v%ncid,it,"calendar",timecal)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time attribute calendar in file '//&
trim(v%filename)//'.')
istatus = nf90_get_att(v%ncid,it,"units",timeunit)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time attribute units in file '//trim(v%filename)//'.')
istart(1) = 1
icount(1) = 2
istatus = nf90_get_var(v%ncid,it,times,istart(1:1),icount(1:1))
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error reading time from file '//trim(v%filename)//'.')
v%first_date = timeval2date(times(1),timeunit,timecal)
end if
tdif = idate - v%first_date
irec = int((tohours(tdif)+12)/24) + 1
if ( irec > v%nrec ) then
istatus = nf90_close(v%ncid)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error close file '//trim(v%filename)//'.')
v%ncid = -1
v%ivar = -1
v%nrec = -1
irec = 1
call read_sst_cesm(idate,v,lat,lon)
end if
istart(1) = 1
istart(2) = 1
istart(3) = irec
icount(1) = size(v%var,1)
icount(2) = size(v%var,2)
icount(3) = 1
istatus = nf90_get_var(v%ncid,v%ivar,v%var,istart,icount)
call cmip6_error(istatus,__FILE__,__LINE__, &
'Error read variable '//trim(v%vname)// &
' from '//trim(v%filename)//'.')
where ( v%var > 0.9E+20_rkx )
v%var = -9999.0_rkx
else where
v%var = v%var + 273.15_rkx
end where
end subroutine read_sst_cesm
end module mod_cmip6_cesm
! vim: tabstop=8 expandtab shiftwidth=2 softtabstop=2