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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 getrb(nc,ustar,nyl,diffh2o,reldiff,rb)
! i i i i i o
!*****************************************************************************
! *
! Calculation of the quasilaminar sublayer resistance to dry deposition. *
! *
! AUTHOR: Andreas Stohl, 20 May 1995 *
! *
!*****************************************************************************
! *
! Variables: *
! rb(ncmax) sublayer resistance *
! schmidt Schmidt number *
! ustar [m/s] friction velocity *
! diffh20 [m2/s] diffusivity of water vapor in air *
! reldiff diffusivity relative to H2O *
! *
! Constants: *
! karman von Karman constant *
! pr Prandtl number *
! *
!*****************************************************************************
use par_mod
implicit none
real :: ustar,diffh2o,rb(maxspec),schmidt,nyl
real :: reldiff(maxspec)
integer :: ic,nc
real,parameter :: pr=0.72
do ic=1,nc
if (reldiff(ic).gt.0.) then
schmidt=nyl/diffh2o*reldiff(ic)
rb(ic)=2.0*(schmidt/pr)**0.67/(karman*ustar)
endif
end do
end subroutine getrb
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