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subroutine readwind_nests(indj,n)
C i i
************************************************************************
* *
* 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 *
* *
* 30 December 1998 *
* *
* Update: *
* 2011-06, implemented reading of grib2 format*
* analog to FLEXPART8.22 routines *
************************************************************************
use grib_api
include 'includepar'
include 'includecom'
integer indj,i,j,k,l,n,levdiff2,ifield,iumax,iwmax
!HSO parameters for grib_api
integer ifile
integer iret
integer igrib
integer gribVer,parCat,parNum,typSurf,valSurf,discipl
integer gotGrid
character*24 gribErrorMsg
character*20 gribFunction
!HSO end
* VARIABLES AND ARRAYS NEEDED FOR GRIB DECODING
C dimension of isec2 at least (22+n), where n is the number of parallels or
C meridians in a quasi-regular (reduced) Gaussian or lat/long grid
C dimension of zsec2 at least (10+nn), where nn is the number of vertical
C coordinate parameters
integer isec0(2),isec1(56),isec2(22+nxmaxn+nymaxn),isec3(2)
integer isec4(64),inbuff(jpack),ilen,iswap,ierr,lunit,iword
real zsec2(60+2*nuvzmax),zsec3(2),zsec4(jpunp)
real xaux,yaux,xaux0,yaux0
real*8 xauxin,yauxin
character*1 yoper
logical error
data yoper/'D'/
!HSO grib api error messages
data gribErrorMsg/'Error reading grib file'/
data gribFunction/'readwind_nests'/
do 100 l=1,numbnests
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:len(numpath+2*(l-1)+1))//trim(wfnamen(l,indj)),'r')
if (iret.ne.GRIB_SUCCESS) then
goto 888 ! ERROR DETECTED
endif
gotGrid=0
ifield=0
C loop fields
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
c print*,'GRiB Edition 1'
c 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)
c change code for etadot to code for omega
if (isec1(6).eq.77) then
isec1(6)=135
endif
else
c print*,'GRiB Edition 2'
c 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)
! 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 ! GRIB version
!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',
1 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 20 j=0,nyn(l)-1
do 20 i=0,nxn(l)-1
k=isec1(8)
if(isec1(6).eq.130) ttn(i,j,nlev_ec-k+1,n,l)= !! TEMPERATURE
& zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.131) uun(i,j,nlev_ec-k+1,n,l)= !! U VELOCITY
& zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.132) vvn(i,j,nlev_ec-k+1,n,l)= !! V VELOCITY
& zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if(isec1(6).eq.133) then
qqn(i,j,nlev_ec-k+1,n,l)= !! HUMIDITY
& zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
if (qqn(i,j,nlev_ec-k+1,n,l).lt.0.)
& qqn(i,j,nlev_ec-k+1,n,l)=0.
c this is necessary because the gridded data may contain
c 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) wwn(i,j,nlev_ec-k+1,n,l)= !! W VELOCITY
& zsec4(nxn(l)*(nyn(l)-j-1)+i+1)
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.131) iumax=max(iumax,nlev_ec-k+1)
if(isec1(6).eq.135) iwmax=max(iwmax,nlev_ec-k+1)
20 continue
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 60 j=0,nyn(l)-1
do 60 i=0,nxn(l)-1
60 wwn(i,j,nlev_ec+1,n,l)=0.
endif
if(iumax.ne.nuvz) stop
+ 'READWIND: NUVZ NOT CONSISTENT FOR A NESTING LEVEL'
if(iwmax.ne.nwz) stop
+ 'READWIND: NWZ NOT CONSISTENT FOR A NESTING LEVEL'
C Calculate potential temperature and potential vorticity on whole grid
***********************************************************************
call calcpv_nests(l,n)
100 continue ! END OF NESTS LOOP
return
888 write(*,*) ' #### TRAJECTORY MODEL ERROR! WINDFIELD #### '
write(*,*) ' #### ',wfname(indj),' #### '
write(*,*) ' #### IS NOT GRIB FORMAT !!! #### '
stop 'Execution terminated'
999 write(*,*)
write(*,*) ' ###########################################'//
& '###### '
write(*,*) ' TRAJECTORY MODEL SUBROUTINE GRIDCHECK:'
write(*,*) ' CAN NOT OPEN INPUT DATA FILE '//wfnamen(l,indj)
write(*,*) ' FOR NESTING LEVEL ',l
write(*,*) ' ###########################################'//
& '###### '
error=.true.
end
|
