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subroutine gridcheck_nests(error)
C o
********************************************************************************
* *
* This routine checks the grid specification for the nested model domains. *
* It is similar to subroutine gridcheck, which checks the mother domain. *
* *
* Authors: A. Stohl, G. Wotawa *
* *
* 30 December 1998 *
* *
* Updated: *
* 2011-06, implemented reading of grib2 format*
* analog to FLEXPART 8.22 routines *
************************************************************************
use grib_api
include 'includepar'
include 'includecom'
!HSO parameters for grib_api
integer ifile
integer iret
integer igrib
integer gribVer,parCat,parNum,typSurf,valSurf,discipl
integer gotGrib
character*24 gribErrorMsg
character*20 gribFunction
!HSO end
integer i,j,k,l,ifn,ifield,iumax,iwmax,numskip,nlev_ecn
integer nuvzn,nwzn
real akmn(nwzmax),bkmn(nwzmax),akzn(nuvzmax),bkzn(nuvzmax)
real uvheightn(nuvzmax),wheightn(nwzmax)
real xaux1,xaux2,yaux1,yaux2
real*8 xaux1in,xaux2in,yaux1in,yaux2in
logical error,oronew
* 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,iword,lunit
real zsec2(60+2*nuvzmax),zsec3(2),zsec4(jpunp)
character*1 yoper
!HSO grib api error messages
data gribErrorMsg/'Error reading grib file'/
data gribFunction/'gridcheck_nests'/
data yoper/'D'/
error=.false.
xresoln(0)=1. ! resolution enhancement for mother grid
yresoln(0)=1. ! resolution enhancement for mother grid
C Loop about all nesting levels
*******************************
do 300 l=1,numbnests
oronew=.false.
iumax=0
iwmax=0
*
if(ideltas.gt.0) then
ifn=1
else
ifn=numbwf
endif
*
* OPENING OF DATA FILE (GRIB CODE)
*
ifile=0
igrib=0
iret=0
5 call grib_open_file(ifile,path(numpath+2*(l-1)+1)
+ (1:len(numpath+2*(l-1)+1))//trim(wfnamen(l,ifn)),'r',iret)
if (iret.ne.GRIB_SUCCESS) then
goto 999 ! ERROR DETECTED
endif
gotGrib=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 30 ! EOF DETECTED
elseif (iret.ne.GRIB_SUCCESS) then
goto 999 ! 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
! 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),iret)
call grib_check(iret,gribFunction,gribErrorMsg)
!HSO get the size and data of the vertical coordinate array
call grib_get_real4_array(igrib,'pv',zsec2,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
nxn(l)=isec2(2)
nyn(l)=isec2(3)
nlev_ecn=isec2(12)/2-1
endif ! ifield
!HSO get the second part of the grid dimensions only from GRiB1 messages
if ((gribVer.eq.1).and.(gotGrib.eq.0)) then
call grib_get_real8(igrib,'longitudeOfFirstGridPointInDegrees'
+ ,xaux1in,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_real8(igrib,'longitudeOfLastGridPointInDegrees',
+ xaux2in,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_real8(igrib,'latitudeOfLastGridPointInDegrees',
+ yaux1in,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
call grib_get_real8(igrib,'latitudeOfFirstGridPointInDegrees',
+ yaux2in,iret)
call grib_check(iret,gribFunction,gribErrorMsg)
xaux1=xaux1in
xaux2=xaux2in
yaux1=yaux1in
yaux2=yaux2in
if(xaux1.gt.180) xaux1=xaux1-360.0
if(xaux2.gt.180) xaux2=xaux2-360.0
if(xaux1.lt.-180) xaux1=xaux1+360.0
if(xaux2.lt.-180) xaux2=xaux2+360.0
if (xaux2.lt.xaux1) xaux2=xaux2+360.
xlon0n(l)=xaux1
ylat0n(l)=yaux1
dxn(l)=(xaux2-xaux1)/float(nxn(l)-1)
dyn(l)=(yaux2-yaux1)/float(nyn(l)-1)
gotGrib=1
endif ! ifield.eq.1
if(isec1(6).eq.129) oronew=.true.
k=isec1(8)
if(isec1(6).eq.131) iumax=max(iumax,nlev_ecn-k+1)
if(isec1(6).eq.135) iwmax=max(iwmax,nlev_ecn-k+1)
if(isec1(6).eq.129) then
do 20 j=0,nyn(l)-1
do 21 i=0,nxn(l)-1
21 oron(i,j,l)=zsec4(nxn(l)*(nyn(l)-j-1)+i+1)/ga
20 continue
endif
call grib_release(igrib)
goto 10 ! READ NEXT LEVEL OR PARAMETER
*
* CLOSING OF INPUT DATA FILE
*
30 call grib_close_file(ifile)
* error message if no fields found with correct first longitude in it
if (gotGrib.eq.0) then
print*,'***ERROR: input file needs to contain GRiB1 formatted'
+ //'messages'
stop
endif
nuvzn=iumax
nwzn=iwmax
if(nuvzn.eq.nlev_ecn) nwzn=nlev_ecn+1
if (nxn(l).gt.nxmaxn) then
write(*,*) 'FLEXTRA error: Too many grid points in x direction.'
write(*,*) 'Reduce resolution of wind fields (file GRIDSPEC)'
write(*,*) 'for nesting level ',l
error=.true.
return
endif
if (nyn(l).gt.nymaxn) then
write(*,*) 'FLEXTRA error: Too many grid points in y direction.'
write(*,*) 'Reduce resolution of wind fields (file GRIDSPEC)'
write(*,*) 'for nesting level ',l
error=.true.
return
endif
if ((nuvzn.gt.nuvzmax).or.(nwzn.gt.nwzmax)) then
write(*,*) 'FLEXTRA error: Nested wind fields have too many'//
+'vertical levels.'
write(*,*) 'Problem was encountered for nesting level ',l
error=.true.
return
endif
C Output of grid info
*********************
write(*,'(a,i2)') 'Nested domain #: ',l
write(*,'(a,f10.2,a1,f10.2,a,f10.2)') ' Longitude range: ',
+xlon0n(l),' to ',xlon0n(l)+(nxn(l)-1)*dxn(l),
+' Grid distance: ',dxn(l)
write(*,'(a,f10.2,a1,f10.2,a,f10.2)') ' Latitude range: ',
+ylat0n(l),' to ',ylat0n(l)+(nyn(l)-1)*dyn(l),
+' Grid distance: ',dyn(l)
write(*,*)
C Determine, how much the resolutions in the nests are enhanced as
C compared to the mother grid
******************************************************************
xresoln(l)=dx/dxn(l)
yresoln(l)=dy/dyn(l)
C Determine the mother grid coordinates of the corner points of the
C nested grids
C Convert first to geographical coordinates, then to grid coordinates
*********************************************************************
xaux1=xlon0n(l)
xaux2=xlon0n(l)+float(nxn(l)-1)*dxn(l)
yaux1=ylat0n(l)
yaux2=ylat0n(l)+float(nyn(l)-1)*dyn(l)
xln(l)=(xaux1-xlon0)/dx
xrn(l)=(xaux2-xlon0)/dx
yln(l)=(yaux1-ylat0)/dy
yrn(l)=(yaux2-ylat0)/dy
* CALCULATE VERTICAL DISCRETIZATION OF ECMWF MODEL
* PARAMETER akm,bkm DESCRIBE THE HYBRID "ETA" COORDINATE SYSTEM
* wheight(i) IS THE HEIGHT OF THE i-th MODEL HALF LEVEL (=INTERFACE BETWEEN
* 2 MODEL LEVELS) IN THE "ETA" SYSTEM
numskip=nlev_ecn-nuvzn ! number of ECMWF model layers not used
! by trajectory model
do 40 i=1,nwzn
j=numskip+i
k=nlev_ecn+1+numskip+i
akmn(nwzn-i+1)=zsec2(j)
bkmn(nwzn-i+1)=zsec2(k)
40 wheightn(nwzn-i+1)=akmn(nwzn-i+1)/p0+bkmn(nwzn-i+1)
* CALCULATION OF uvheight, akz, bkz
* akz,bkz ARE THE DISCRETIZATION PARAMETERS FOR THE MODEL LEVELS
* uvheight(i) IS THE HEIGHT OF THE i-th MODEL LEVEL IN THE "ETA" SYSTEM
do 45 i=1,nuvzn
uvheightn(i)=0.5*(wheightn(i+1)+wheightn(i))
akzn(i)=0.5*(akmn(i+1)+akmn(i))
45 bkzn(i)=0.5*(bkmn(i+1)+bkmn(i))
C If vertical coordinates decrease with increasing altitude, multiply by -1.
C This means that also the vertical velocities have to be multiplied by -1.
****************************************************************************
if (uvheightn(1).lt.uvheightn(nuvzn)) then
zdirect=1.
else
zdirect=-1.
do 55 i=1,nuvz
55 uvheightn(i)=zdirect*uvheightn(i)
do 65 i=1,nwz
65 wheightn(i)=zdirect*wheightn(i)
endif
C Check, whether the heights of the model levels of the nested
C wind fields are consistent with those of the mother domain.
C If not, terminate model run.
**************************************************************
do 75 i=1,nuvz
if ((akzn(i).ne.akz(i)).or.(bkzn(i).ne.bkz(i)).or.
+ (uvheightn(i).ne.uvheight(i))) then
write(*,*) 'FLEXTRA error: The wind fields of nesting level',l
write(*,*) 'are not consistent with the mother domain:'
write(*,*) 'Differences in vertical levels detected.'
error=.true.
return
endif
75 continue
do 85 i=1,nwz
if ((akmn(i).ne.akm(i)).or.(bkmn(i).ne.bkm(i)).or.
+ (wheightn(i).ne.wheight(i))) then
write(*,*) 'FLEXTRA error: The wind fields of nesting level',l
write(*,*) 'are not consistent with the mother domain:'
write(*,*) 'Differences in vertical levels detected.'
error=.true.
return
endif
85 continue
if (.not.oronew) then
write(*,*) 'FLEXTRA error: Orography of nested domains'
write(*,*) 'is missing in the wind field files.'
endif
300 continue
return
999 write(*,*)
write(*,*) ' ###########################################'//
& '###### '
write(*,*) ' TRAJECTORY MODEL SUBROUTINE GRIDCHECK:'
write(*,*) ' CAN NOT OPEN INPUT DATA FILE '//wfnamen(l,ifn)
write(*,*) ' FOR NESTING LEVEL ',k
write(*,*) ' ###########################################'//
& '###### '
error=.true.
return
end
|
