!********************************************************************** ! 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 . * !********************************************************************** subroutine readoutgrid !***************************************************************************** ! * ! This routine reads the user specifications for the output grid. * ! * ! Author: A. Stohl * ! * ! 4 June 1996 * ! HSO, 1 July 2014: Add optional namelist input * ! PS, 6/2015-9/2018: read regular input with free format * ! simplify code and rename some variables * ! * !***************************************************************************** ! * ! Variables: * ! dxout,dyout grid distance * ! numxgrid,numygrid,numzgrid grid dimensions * ! outlon0,outlat0 lower left corner of grid * ! outheight(maxzgrid) height levels of output grid [m] * ! * ! Constants: * ! unitoutgrid unit connected to file OUTGRID * ! * !***************************************************************************** use outg_mod use par_mod use com_mod implicit none integer :: i,kz,istat real :: xr,xr1,yr,yr1 real,parameter :: eps=1.e-4 ! namelist variables integer, parameter :: maxoutlev=500 integer :: ios real,allocatable, dimension (:) :: outheights,outaux logical :: lnml ! declare namelist namelist /nml_outgrid/ & outlon0,outlat0, & numxgrid,numygrid, & dxout,dyout, & outheight ! allocate outheights for nml read with max dimension allocate(outheights(maxoutlev),outaux(maxoutlev),stat=istat) if (istat .ne. 0) write(*,*)'ERROR: could not allocate outheights' ! Open the OUTGRID file and read output grid specifications !********************************************************** outheight(:) = -999. ! initialise for later finding #valid levels open(unitoutgrid,file=trim(path(1))//'OUTGRID',status='old',& form='formatted',err=999) ! try namelist input read(unitoutgrid,nml_outgrid,iostat=ios) close(unitoutgrid) if (ios .eq. 0) then ! namelist works lnml = .true. else ! read as regular text lnml = .false. open(unitoutgrid,file=trim(path(1))//'OUTGRID',status='old',err=999) call skplin(5,unitoutgrid) ! Read horizontal grid specifications !**************************************** call skplin(3,unitoutgrid) read(unitoutgrid,*) outlon0 call skplin(3,unitoutgrid) read(unitoutgrid,*) outlat0 call skplin(3,unitoutgrid) read(unitoutgrid,*) numxgrid call skplin(3,unitoutgrid) read(unitoutgrid,*) numygrid call skplin(3,unitoutgrid) read(unitoutgrid,*) dxout call skplin(3,unitoutgrid) read(unitoutgrid,*) dyout endif ! read OUTGRID file ! Check validity of output grid (shall be within model domain) !************************************************************* xr=outlon0+real(numxgrid)*dxout yr=outlat0+real(numygrid)*dyout xr1=xlon0+real(nxmin1)*dx yr1=ylat0+real(nymin1)*dy if ((outlon0+eps.lt.xlon0).or.(outlat0+eps.lt.ylat0) & .or.(xr.gt.xr1+eps).or.(yr.gt.yr1+eps)) then write(*,*) outlon0,outlat0 write(*,*) xr1,yr1,xlon0,ylat0,xr,yr,dxout,dyout write(*,*) ' #### FLEXPART MODEL ERROR! PART OF OUTPUT ####' write(*,*) ' #### GRID IS OUTSIDE MODEL DOMAIN. CHANGE ####' write(*,*) ' #### FILE OUTGRID IN DIRECTORY ####' write(*,'(a)') trim(path(1)) stop endif ! Read (if .not. lmnl) and count vertical levels of output grid !************************************************************** do kz = 1,maxoutlev if (lnml) then ! we have read them already if (outheight(kz) .lt. 0.) exit ! 1st nondefined level else call skplin(3,unitoutgrid) read(unitoutgrid,*,end=10) outheight(kz) endif end do 10 continue numzgrid = kz - 1 ! number of outgrid levels ! allocate the required length only, shuffle data outaux = outheight ! shuffle deallocate(outheights) allocate(outheight(numzgrid),outheighthalf(numzgrid),stat=istat) if (istat .ne. 0) then write(*,*) 'ERROR: could not allocate outheight and outheighthalf' stop 'readoutgrid error' endif outheight=outaux(1:numzgrid) ! shuffle back deallocate (outaux) ! write outgrid file in namelist format to output directory if requested if (nmlout) then open(unitoutgrid,file=trim(path(2))//'OUTGRID.namelist',err=1000) write(unitoutgrid,nml=nml_outgrid) close(unitoutgrid) endif ! Check whether vertical levels are specified in ascending order !*************************************************************** do kz=2,numzgrid if (outheight(kz) .le. outheight(kz-1)) goto 998 end do ! Determine the half levels, i.e. middle levels of the output grid !***************************************************************** outheighthalf(1) = 0.5*outheight(1) do kz = 2,numzgrid outheighthalf(kz) = 0.5*(outheight(kz-1)+outheight(kz)) end do xoutshift=xlon0-outlon0 youtshift=ylat0-outlat0 allocate(oroout(0:numxgrid-1,0:numygrid-1),stat=istat) if (istat .ne. 0) write(*,*)'ERROR: could not allocate oroout' allocate(area(0:numxgrid-1,0:numygrid-1),stat=istat) if (istat .ne. 0) write(*,*)'ERROR: could not allocate area' allocate(volume(0:numxgrid-1,0:numygrid-1,numzgrid),stat=istat) if (istat .ne. 0) write(*,*)'ERROR: could not allocate volume' allocate(areaeast(0:numxgrid-1,0:numygrid-1,numzgrid),stat=istat) if (istat .ne. 0) write(*,*)'ERROR: could not allocate areaeast' allocate(areanorth(0:numxgrid-1,0:numygrid-1,numzgrid),stat=istat) if (istat .ne. 0) write(*,*)'ERROR: could not allocate areanorth' return 998 continue write(*,*) ' #### FLEXPART MODEL ERROR! YOUR SPECIFICATION#### ' write(*,*) ' #### OF OUTPUT LEVELS NOT INCREASING AT LEVEL#### ' write(*,*) ' #### ',kz,' #### ' write(*,*) ' #### PLEASE MAKE CHANGES IN FILE OUTGRID. #### ' STOP 'readoutgrid error' 999 write(*,*) ' #### FLEXPART MODEL ERROR! FILE "OUTGRID" #### ' write(*,*) ' #### CANNOT BE OPENED IN THE DIRECTORY #### ' write(*,'(a)') trim(path(1)) stop 1000 write(*,*) ' #### FLEXPART MODEL ERROR! FILE "OUTGRID" #### ' write(*,*) ' #### CANNOT BE OPENED IN THE DIRECTORY #### ' write(*,'(a)') trim(path(2)) stop end subroutine readoutgrid