!********************************************************************** ! 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 getfields(itime,nstop) ! i o !***************************************************************************** ! * ! This subroutine manages the 3 data fields to be kept in memory. * ! During the first time step of petterssen it has to be fulfilled that the * ! first data field must have |wftime| 0, if trajectory has to be terminated * ! nx,ny,nuvz,nwz field dimensions in x,y and z direction * ! uu(0:nxmax,0:nymax,nuvzmax,2) wind components in x-direction [m/s] * ! vv(0:nxmax,0:nymax,nuvzmax,2) wind components in y-direction [m/s] * ! ww(0:nxmax,0:nymax,nwzmax,2) wind components in z-direction [deltaeta/s]* ! tt(0:nxmax,0:nymax,nuvzmax,2) temperature [K] * ! ps(0:nxmax,0:nymax,2) surface pressure [Pa] * ! * ! Constants: * ! idiffmax maximum allowable time difference between 2 wind * ! fields * ! * !***************************************************************************** use par_mod use com_mod implicit none integer :: indj,itime,nstop,memaux real :: uuh(0:nxmax-1,0:nymax-1,nuvzmax) real :: vvh(0:nxmax-1,0:nymax-1,nuvzmax) real :: pvh(0:nxmax-1,0:nymax-1,nuvzmax) real :: wwh(0:nxmax-1,0:nymax-1,nwzmax) real :: uuhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) real :: vvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) real :: pvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) real :: wwhn(0:nxmaxn-1,0:nymaxn-1,nwzmax,maxnests) integer :: indmin = 1 ! Check, if wind fields are available for the current time step !************************************************************** nstop=0 if ((ldirect*wftime(1).gt.ldirect*itime).or. & (ldirect*wftime(numbwf).lt.ldirect*itime)) then write(*,*) 'FLEXPART WARNING: NO WIND FIELDS ARE AVAILABLE.' write(*,*) 'A TRAJECTORY HAS TO BE TERMINATED.' nstop=4 return endif if ((ldirect*memtime(1).le.ldirect*itime).and. & (ldirect*memtime(2).gt.ldirect*itime)) then ! The right wind fields are already in memory -> don't do anything !***************************************************************** continue else if ((ldirect*memtime(2).le.ldirect*itime).and. & (memtime(2).ne.999999999)) then ! Current time is after 2nd wind field ! -> Resort wind field pointers, so that current time is between 1st and 2nd !*************************************************************************** memaux=memind(1) memind(1)=memind(2) memind(2)=memaux memtime(1)=memtime(2) ! Read a new wind field and store it on place memind(2) !****************************************************** do indj=indmin,numbwf-1 if (ldirect*wftime(indj+1).gt.ldirect*itime) then call readwind(indj+1,memind(2),uuh,vvh,wwh) call readwind_nests(indj+1,memind(2),uuhn,vvhn,wwhn) call calcpar(memind(2),uuh,vvh,pvh) call calcpar_nests(memind(2),uuhn,vvhn,pvhn) call verttransform(memind(2),uuh,vvh,wwh,pvh) call verttransform_nests(memind(2),uuhn,vvhn,wwhn,pvhn) memtime(2)=wftime(indj+1) nstop = 1 goto 40 endif end do 40 indmin=indj else ! No wind fields, which can be used, are currently in memory ! -> read both wind fields !*********************************************************** do indj=indmin,numbwf-1 if ((ldirect*wftime(indj).le.ldirect*itime).and. & (ldirect*wftime(indj+1).gt.ldirect*itime)) then memind(1)=1 call readwind(indj,memind(1),uuh,vvh,wwh) call readwind_nests(indj,memind(1),uuhn,vvhn,wwhn) call calcpar(memind(1),uuh,vvh,pvh) call calcpar_nests(memind(1),uuhn,vvhn,pvhn) call verttransform(memind(1),uuh,vvh,wwh,pvh) call verttransform_nests(memind(1),uuhn,vvhn,wwhn,pvhn) memtime(1)=wftime(indj) memind(2)=2 call readwind(indj+1,memind(2),uuh,vvh,wwh) call readwind_nests(indj+1,memind(2),uuhn,vvhn,wwhn) call calcpar(memind(2),uuh,vvh,pvh) call calcpar_nests(memind(2),uuhn,vvhn,pvhn) call verttransform(memind(2),uuh,vvh,wwh,pvh) call verttransform_nests(memind(2),uuhn,vvhn,wwhn,pvhn) memtime(2)=wftime(indj+1) nstop = 1 goto 60 endif end do 60 indmin=indj endif lwindinterv=abs(memtime(2)-memtime(1)) if (lwindinterv.gt.idiffmax) nstop=3 end subroutine getfields