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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 readreceptors
!*****************************************************************************
! *
! This routine reads the user specifications for the receptor points. *
! *
! Author: A. Stohl *
! *
! 1 August 1996 *
! *
!*****************************************************************************
! *
! Variables: *
! receptorarea(maxreceptor) area of dx*dy at location of receptor *
! receptorname(maxreceptor) names of receptors *
! xreceptor,yreceptor coordinates of receptor points *
! *
! Constants: *
! unitreceptor unit connected to file RECEPTORS *
! *
!*****************************************************************************
use par_mod
use com_mod
implicit none
integer :: j
real :: x,y,xm,ym
character(len=16) :: receptor
! For backward runs, do not allow receptor output. Thus, set number of receptors to zero
!*****************************************************************************
if (ldirect.lt.0) then
numreceptor=0
return
endif
! Open the RECEPTORS file and read output grid specifications
!************************************************************
open(unitreceptor,file=path(1)(1:length(1))//'RECEPTORS', &
status='old',err=999)
call skplin(5,unitreceptor)
! Read the names and coordinates of the receptors
!************************************************
j=0
100 j=j+1
read(unitreceptor,*,end=99)
read(unitreceptor,*,end=99)
read(unitreceptor,*,end=99)
read(unitreceptor,'(4x,a16)',end=99) receptor
call skplin(3,unitreceptor)
read(unitreceptor,'(4x,f11.4)',end=99) x
call skplin(3,unitreceptor)
read(unitreceptor,'(4x,f11.4)',end=99) y
if ((x.eq.0.).and.(y.eq.0.).and. &
(receptor.eq.' ')) then
j=j-1
goto 100
endif
if (j.gt.maxreceptor) then
write(*,*) ' #### FLEXPART MODEL ERROR! TOO MANY RECEPTOR #### '
write(*,*) ' #### POINTS ARE GIVEN. #### '
write(*,*) ' #### MAXIMUM NUMBER IS ',maxreceptor,' #### '
write(*,*) ' #### PLEASE MAKE CHANGES IN FILE RECEPTORS #### '
endif
receptorname(j)=receptor
xreceptor(j)=(x-xlon0)/dx ! transform to grid coordinates
yreceptor(j)=(y-ylat0)/dy
xm=r_earth*cos(y*pi/180.)*dx/180.*pi
ym=r_earth*dy/180.*pi
receptorarea(j)=xm*ym
goto 100
99 numreceptor=j-1
close(unitreceptor)
return
999 write(*,*) ' #### FLEXPART MODEL ERROR! FILE "RECEPTORS" #### '
write(*,*) ' #### CANNOT BE OPENED IN THE DIRECTORY #### '
write(*,'(a)') path(1)(1:length(1))
stop
end subroutine readreceptors
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