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|
!**********************************************************************
! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 *
! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, *
! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann *
! *
! This file is part of FLEXPART. *
! *
! FLEXPART 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. *
! *
! FLEXPART 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 FLEXPART. If not, see <http://www.gnu.org/licenses/>. *
!**********************************************************************
subroutine readwind_nests(indj,n,uuhn,vvhn,wwhn)
! i i o o o
!*****************************************************************************
! *
! This routine reads the wind fields for the nested model domains. *
! It is similar to subroutine readwind, which reads the mother domain. *
! *
! Authors: A. Stohl, G. Wotawa *
! *
! 8 February 1999 *
! *
! Last update: 17 October 2000, A. Stohl *
! *
!*****************************************************************************
! Changes, Bernd C. Krueger, Feb. 2001: *
! Variables tthn and qvhn (on eta coordinates) in common block *
! CHANGE: 11/01/2008, Harald Sodemann, GRIB1/2 input with ECMWF grib_api *
! CHANGE: 03/12/2008, Harald Sodemann, update to f90 with ECMWF grib_api *
!*****************************************************************************
use grib_api
use par_mod
use com_mod
implicit none
!HSO parameters for grib_api
integer :: ifile
integer :: iret
integer :: igrib
integer :: gribVer,parCat,parNum,typSurf,valSurf,discipl
integer :: gotGrid
!HSO end
real :: uuhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests)
real :: vvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests)
real :: wwhn(0:nxmaxn-1,0:nymaxn-1,nwzmax,maxnests)
integer :: indj,i,j,k,n,levdiff2,ifield,iumax,iwmax,l
! VARIABLES AND ARRAYS NEEDED FOR GRIB DECODING
! dimension of isec2 at least (22+n), where n is the number of parallels or
! meridians in a quasi-regular (reduced) Gaussian or lat/long grid
! dimension of zsec2 at least (10+nn), where nn is the number of vertical
! coordinate parameters
integer :: isec1(56),isec2(22+nxmaxn+nymaxn)
real(kind=4) :: zsec4(jpunp)
real(kind=8) :: xauxin,yauxin
real(kind=4) :: xaux,yaux,xaux0,yaux0
real :: ewss(0:nxmaxn-1,0:nymaxn-1),nsss(0:nxmaxn-1,0:nymaxn-1)
real :: plev1,pmean,tv,fu,hlev1,ff10m,fflev1
logical :: hflswitch,strswitch
!HSO grib api error messages
character(len=24) :: gribErrorMsg = 'Error reading grib file'
character(len=20) :: gribFunction = 'readwind_nests'
do l=1,numbnests
hflswitch=.false.
strswitch=.false.
levdiff2=nlev_ec-nwz+1
iumax=0
iwmax=0
ifile=0
igrib=0
iret=0
!
! OPENING OF DATA FILE (GRIB CODE)
!
5 call grib_open_file(ifile,path(numpath+2*(l-1)+1) &
(1:length(numpath+2*(l-1)+1))//trim(wfnamen(l,indj)),'r')
if (iret.ne.GRIB_SUCCESS) then
goto 888 ! ERROR DETECTED
endif
!turn on support for multi fields messages */
!call grib_multi_support_on
gotGrid=0
ifield=0
10 ifield=ifield+1
!
! GET NEXT FIELDS
!
call grib_new_from_file(ifile,igrib,iret)
if (iret.eq.GRIB_END_OF_FILE) then
goto 50 ! EOF DETECTED
elseif (iret.ne.GRIB_SUCCESS) then
goto 888 ! ERROR DETECTED
endif
!first see if we read GRIB1 or GRIB2
call grib_get_int(igrib,'editionNumber',gribVer,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
if (gribVer.eq.1) then ! GRIB Edition 1
!print*,'GRiB Edition 1'
!read the grib2 identifiers
call grib_get_int(igrib,'indicatorOfParameter',isec1(6),iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_int(igrib,'level',isec1(8),iret)
call grib_check(iret,gribFunction,gribErrorMsg)
!change code for etadot to code for omega
if (isec1(6).eq.77) then
isec1(6)=135
endif
else
!print*,'GRiB Edition 2'
!read the grib2 identifiers
call grib_get_int(igrib,'discipline',discipl,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_int(igrib,'parameterCategory',parCat,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_int(igrib,'parameterNumber',parNum,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_int(igrib,'typeOfFirstFixedSurface',typSurf,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_int(igrib,'level',valSurf,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
!print*,discipl,parCat,parNum,typSurf,valSurf
!convert to grib1 identifiers
isec1(6)=-1
isec1(7)=-1
isec1(8)=-1
isec1(8)=valSurf ! level
if ((parCat.eq.0).and.(parNum.eq.0).and.(typSurf.eq.105)) then ! T
isec1(6)=130 ! indicatorOfParameter
elseif ((parCat.eq.2).and.(parNum.eq.2).and.(typSurf.eq.105)) then ! U
isec1(6)=131 ! indicatorOfParameter
elseif ((parCat.eq.2).and.(parNum.eq.3).and.(typSurf.eq.105)) then ! V
isec1(6)=132 ! indicatorOfParameter
elseif ((parCat.eq.1).and.(parNum.eq.0).and.(typSurf.eq.105)) then ! Q
isec1(6)=133 ! indicatorOfParameter
elseif ((parCat.eq.3).and.(parNum.eq.0).and.(typSurf.eq.1)) then !SP
isec1(6)=134 ! indicatorOfParameter
elseif ((parCat.eq.2).and.(parNum.eq.32)) then ! W, actually eta dot
isec1(6)=135 ! indicatorOfParameter
elseif ((parCat.eq.3).and.(parNum.eq.0).and.(typSurf.eq.101)) then !SLP
isec1(6)=151 ! indicatorOfParameter
elseif ((parCat.eq.2).and.(parNum.eq.2).and.(typSurf.eq.103)) then ! 10U
isec1(6)=165 ! indicatorOfParameter
elseif ((parCat.eq.2).and.(parNum.eq.3).and.(typSurf.eq.103)) then ! 10V
isec1(6)=166 ! indicatorOfParameter
elseif ((parCat.eq.0).and.(parNum.eq.0).and.(typSurf.eq.103)) then ! 2T
isec1(6)=167 ! indicatorOfParameter
elseif ((parCat.eq.0).and.(parNum.eq.6).and.(typSurf.eq.103)) then ! 2D
isec1(6)=168 ! indicatorOfParameter
elseif ((parCat.eq.1).and.(parNum.eq.11).and.(typSurf.eq.1)) then ! SD
isec1(6)=141 ! indicatorOfParameter
elseif ((parCat.eq.6).and.(parNum.eq.1)) then ! CC
isec1(6)=164 ! indicatorOfParameter
elseif ((parCat.eq.1).and.(parNum.eq.9)) then ! LSP
isec1(6)=142 ! indicatorOfParameter
elseif ((parCat.eq.1).and.(parNum.eq.10)) then ! CP
isec1(6)=143 ! indicatorOfParameter
elseif ((parCat.eq.0).and.(parNum.eq.11).and.(typSurf.eq.1)) then ! SHF
isec1(6)=146 ! indicatorOfParameter
elseif ((parCat.eq.4).and.(parNum.eq.9).and.(typSurf.eq.1)) then ! SR
isec1(6)=176 ! indicatorOfParameter
elseif ((parCat.eq.2).and.(parNum.eq.17)) then ! EWSS
isec1(6)=180 ! indicatorOfParameter
elseif ((parCat.eq.2).and.(parNum.eq.18)) then ! NSSS
isec1(6)=181 ! indicatorOfParameter
elseif ((parCat.eq.3).and.(parNum.eq.4)) then ! ORO
isec1(6)=129 ! indicatorOfParameter
elseif ((parCat.eq.3).and.(parNum.eq.7)) then ! SDO
isec1(6)=160 ! indicatorOfParameter
elseif ((discipl.eq.2).and.(parCat.eq.0).and.(parNum.eq.0).and. &
(typSurf.eq.1)) then ! LSM
isec1(6)=172 ! indicatorOfParameter
else
print*,'***ERROR: undefined GRiB2 message found!',discipl, &
parCat,parNum,typSurf
endif
endif
!HSO get the size and data of the values array
if (isec1(6).ne.-1) then
call grib_get_real4_array(igrib,'values',zsec4,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
endif
!HSO get the required fields from section 2 in a gribex compatible manner
if(ifield.eq.1) then
call grib_get_int(igrib,'numberOfPointsAlongAParallel', &
isec2(2),iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_int(igrib,'numberOfPointsAlongAMeridian', &
isec2(3),iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_int(igrib,'numberOfVerticalCoordinateValues', &
isec2(12))
call grib_check(iret,gribFunction,gribErrorMsg)
! CHECK GRID SPECIFICATIONS
if(isec2(2).ne.nxn(l)) stop &
'READWIND: NX NOT CONSISTENT FOR A NESTING LEVEL'
if(isec2(3).ne.nyn(l)) stop &
'READWIND: NY NOT CONSISTENT FOR A NESTING LEVEL'
if(isec2(12)/2-1.ne.nlev_ec) stop 'READWIND: VERTICAL DISCRET&
&IZATION NOT CONSISTENT FOR A NESTING LEVEL'
endif ! ifield
!HSO get the second part of the grid dimensions only from GRiB1 messages
if ((gribVer.eq.1).and.(gotGrid.eq.0)) then
call grib_get_real8(igrib,'longitudeOfFirstGridPointInDegrees', &
xauxin,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_real8(igrib,'latitudeOfLastGridPointInDegrees', &
yauxin,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
xaux=xauxin
yaux=yauxin
xaux0=xlon0n(l)
yaux0=ylat0n(l)
if(xaux.lt.0.) xaux=xaux+360.
if(yaux.lt.0.) yaux=yaux+360.
if(xaux0.lt.0.) xaux0=xaux0+360.
if(yaux0.lt.0.) yaux0=yaux0+360.
if(xaux.ne.xaux0) &
stop 'READWIND: LOWER LEFT LONGITUDE NOT CONSISTENT FOR A NES&
&TING LEVEL'
if(yaux.ne.yaux0) &
stop 'READWIND: LOWER LEFT LATITUDE NOT CONSISTENT FOR A NEST&
&ING LEVEL'
gotGrid=1
endif
do j=0,nyn(l)-1
do i=0,nxn(l)-1
k=isec1(8)
if(isec1(6).eq.130) tthn(i,j,nlev_ec-k+2,n,l)= &!! TEMPERATURE
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.131) uuhn(i,j,nlev_ec-k+2,l)= &!! U VELOCITY
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.132) vvhn(i,j,nlev_ec-k+2,l)= &!! V VELOCITY
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.133) then !! SPEC. HUMIDITY
qvhn(i,j,nlev_ec-k+2,n,l)=zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if (qvhn(i,j,nlev_ec-k+2,n,l) .lt. 0.) &
qvhn(i,j,nlev_ec-k+2,n,l) = 0.
! this is necessary because the gridded data may contain
! spurious negative values
endif
if(isec1(6).eq.134) psn(i,j,1,n,l)= &!! SURF. PRESS.
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.135) wwhn(i,j,nlev_ec-k+1,l)= &!! W VELOCITY
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.141) sdn(i,j,1,n,l)= &!! SNOW DEPTH
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.151) msln(i,j,1,n,l)= &!! SEA LEVEL PRESS.
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.164) tccn(i,j,1,n,l)= &!! CLOUD COVER
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.165) u10n(i,j,1,n,l)= &!! 10 M U VELOCITY
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.166) v10n(i,j,1,n,l)= &!! 10 M V VELOCITY
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.167) tt2n(i,j,1,n,l)= &!! 2 M TEMPERATURE
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.168) td2n(i,j,1,n,l)= &!! 2 M DEW POINT
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.142) then !! LARGE SCALE PREC.
lsprecn(i,j,1,n,l)=zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if (lsprecn(i,j,1,n,l).lt.0.) lsprecn(i,j,1,n,l)=0.
endif
if(isec1(6).eq.143) then !! CONVECTIVE PREC.
convprecn(i,j,1,n,l)=zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if (convprecn(i,j,1,n,l).lt.0.) convprecn(i,j,1,n,l)=0.
endif
if(isec1(6).eq.146) sshfn(i,j,1,n,l)= &!! SENS. HEAT FLUX
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if((isec1(6).eq.146).and. &
(zsec4(nxn(l)*(nyn(l)-j-1)+i+1).ne.0.)) hflswitch=.true. ! Heat flux available
if(isec1(6).eq.176) then !! SOLAR RADIATION
ssrn(i,j,1,n,l)=zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if (ssrn(i,j,1,n,l).lt.0.) ssrn(i,j,1,n,l)=0.
endif
if(isec1(6).eq.180) ewss(i,j)= &!! EW SURFACE STRESS
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.181) nsss(i,j)= &!! NS SURFACE STRESS
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(((isec1(6).eq.180).or.(isec1(6).eq.181)).and. &
(zsec4(nxn(l)*(nyn(l)-j-1)+i+1).ne.0.)) strswitch=.true. ! stress available
if(isec1(6).eq.129) oron(i,j,l)= &!! ECMWF OROGRAPHY
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)/ga
if(isec1(6).eq.160) excessoron(i,j,l)= &!! STANDARD DEVIATION OF OROGRAPHY
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.172) lsmn(i,j,l)= &!! ECMWF LAND SEA MASK
zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.131) iumax=max(iumax,nlev_ec-k+1)
if(isec1(6).eq.135) iwmax=max(iwmax,nlev_ec-k+1)
end do
end do
call grib_release(igrib)
goto 10 !! READ NEXT LEVEL OR PARAMETER
!
! CLOSING OF INPUT DATA FILE
!
50 call grib_close_file(ifile)
!error message if no fields found with correct first longitude in it
if (gotGrid.eq.0) then
print*,'***ERROR: input file needs to contain GRiB1 formatted'// &
'messages'
stop
endif
if(levdiff2.eq.0) then
iwmax=nlev_ec+1
do i=0,nxn(l)-1
do j=0,nyn(l)-1
wwhn(i,j,nlev_ec+1,l)=0.
end do
end do
endif
do i=0,nxn(l)-1
do j=0,nyn(l)-1
surfstrn(i,j,1,n,l)=sqrt(ewss(i,j)**2+nsss(i,j)**2)
end do
end do
if ((.not.hflswitch).or.(.not.strswitch)) then
write(*,*) 'WARNING: No flux data contained in GRIB file ', &
wfnamen(l,indj)
! CALCULATE USTAR AND SSHF USING THE PROFILE METHOD
! As ECMWF has increased the model resolution, such that now the first model
! level is at about 10 m (where 10-m wind is given), use the 2nd ECMWF level
! (3rd model level in FLEXPART) for the profile method
!***************************************************************************
do i=0,nxn(l)-1
do j=0,nyn(l)-1
plev1=akz(3)+bkz(3)*psn(i,j,1,n,l)
pmean=0.5*(psn(i,j,1,n,l)+plev1)
tv=tthn(i,j,3,n,l)*(1.+0.61*qvhn(i,j,3,n,l))
fu=-r_air*tv/ga/pmean
hlev1=fu*(plev1-psn(i,j,1,n,l)) ! HEIGTH OF FIRST MODEL LAYER
ff10m= sqrt(u10n(i,j,1,n,l)**2+v10n(i,j,1,n,l)**2)
fflev1=sqrt(uuhn(i,j,3,l)**2+vvhn(i,j,3,l)**2)
call pbl_profile(psn(i,j,1,n,l),td2n(i,j,1,n,l),hlev1, &
tt2n(i,j,1,n,l),tthn(i,j,3,n,l),ff10m,fflev1, &
surfstrn(i,j,1,n,l),sshfn(i,j,1,n,l))
if(sshfn(i,j,1,n,l).gt.200.) sshfn(i,j,1,n,l)=200.
if(sshfn(i,j,1,n,l).lt.-400.) sshfn(i,j,1,n,l)=-400.
end do
end do
endif
! Assign 10 m wind to model level at eta=1.0 to have one additional model
! level at the ground
! Specific humidity is taken the same as at one level above
! Temperature is taken as 2 m temperature
!**************************************************************************
do i=0,nxn(l)-1
do j=0,nyn(l)-1
uuhn(i,j,1,l)=u10n(i,j,1,n,l)
vvhn(i,j,1,l)=v10n(i,j,1,n,l)
qvhn(i,j,1,n,l)=qvhn(i,j,2,n,l)
tthn(i,j,1,n,l)=tt2n(i,j,1,n,l)
end do
end do
if(iumax.ne.nuvz-1) stop &
'READWIND: NUVZ NOT CONSISTENT FOR A NESTING LEVEL'
if(iwmax.ne.nwz) stop &
'READWIND: NWZ NOT CONSISTENT FOR A NESTING LEVEL'
end do
return
888 write(*,*) ' #### FLEXPART MODEL ERROR! WINDFIELD #### '
write(*,*) ' #### ',wfnamen(l,indj),' FOR NESTING LEVEL #### '
write(*,*) ' #### ',l,' IS NOT GRIB FORMAT !!! #### '
stop 'Execution terminated'
999 write(*,*) ' #### FLEXPART MODEL ERROR! WINDFIELD #### '
write(*,*) ' #### ',wfnamen(l,indj),' #### '
write(*,*) ' #### CANNOT BE OPENED FOR NESTING LEVEL ',l,'####'
end subroutine readwind_nests
|
