source: flexpart.git/src/get_vdep_prob.f90 @ 02095e3

devrelease-10univie
Last change on this file since 02095e3 was 92a74b2, checked in by Sabine <sabine.eckhardt@…>, 3 years ago

get_vdep_prob instead of advance

  • Property mode set to 100644
File size: 5.4 KB
Line 
1!**********************************************************************
2! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010         *
3! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa,             *
4! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann   *
5!                                                                     *
6! This file is part of FLEXPART.                                      *
7!                                                                     *
8! FLEXPART is free software: you can redistribute it and/or modify    *
9! it under the terms of the GNU General Public License as published by*
10! the Free Software Foundation, either version 3 of the License, or   *
11! (at your option) any later version.                                 *
12!                                                                     *
13! FLEXPART is distributed in the hope that it will be useful,         *
14! but WITHOUT ANY WARRANTY; without even the implied warranty of      *
15! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       *
16! GNU General Public License for more details.                        *
17!                                                                     *
18! You should have received a copy of the GNU General Public License   *
19! along with FLEXPART.  If not, see <http://www.gnu.org/licenses/>.   *
20!**********************************************************************
21
22subroutine get_vdep_prob(itime,xt,yt,zt,prob)
23  !                    i     i  i  i  o
24  !*****************************************************************************
25  !                                                                            *
26  !  Calculation of the probability for dyr deposition                         *
27  !                                                                            *
28  !  Particle positions are read in - prob returned                            *
29  !                                                                            *
30  !*****************************************************************************
31  !                                                                            *
32  ! Variables:                                                                 *
33  ! itime [s]          time at which this subroutine is entered                *
34  ! itimec [s]         actual time, which is incremented in this subroutine    *
35  ! href [m]           height for which dry deposition velocity is calculated  *
36  ! ldirect            1 forward, -1 backward                                  *
37  ! ldt [s]            Time step for the next integration                      *
38  ! lsynctime [s]      Synchronisation interval of FLEXPART                    *
39  ! ngrid              index which grid is to be used                          *
40  ! prob               probability of absorption due to dry deposition         *
41  ! vdepo              Deposition velocities for all species                   *
42  ! xt,yt,zt           Particle position                                       *
43  !                                                                            *
44  !*****************************************************************************
45
46  use point_mod
47  use par_mod
48  use com_mod
49  use interpol_mod
50
51  implicit none
52
53  real(kind=dp) :: xt,yt
54  real :: zt,xtn,ytn
55  integer :: itime,i,j,k,memindnext
56  integer :: nix,njy,ks
57  real :: prob(maxspec),vdepo(maxspec)
58  real,parameter :: eps=nxmax/3.e5
59
60  if (DRYDEP) then    ! reset probability for deposition
61    do ks=1,nspec
62      depoindicator(ks)=.true.
63      prob(ks)=0.
64    end do
65  endif
66
67
68  ! Determine whether lat/long grid or polarstereographic projection
69  ! is to be used
70  ! Furthermore, determine which nesting level to be used
71  !*****************************************************************
72
73  if (nglobal.and.(yt.gt.switchnorthg)) then
74    ngrid=-1
75  else if (sglobal.and.(yt.lt.switchsouthg)) then
76    ngrid=-2
77  else
78    ngrid=0
79    do j=numbnests,1,-1
80      if ((xt.gt.xln(j)+eps).and.(xt.lt.xrn(j)-eps).and. &
81           (yt.gt.yln(j)+eps).and.(yt.lt.yrn(j)-eps)) then
82        ngrid=j
83        goto 23
84      endif
85    end do
8623   continue
87  endif
88
89
90  !***************************
91  ! Interpolate necessary data
92  !***************************
93
94  if (abs(itime-memtime(1)).lt.abs(itime-memtime(2))) then
95    memindnext=1
96  else
97    memindnext=2
98  endif
99
100  ! Determine nested grid coordinates
101  !**********************************
102
103  if (ngrid.gt.0) then
104    xtn=(xt-xln(ngrid))*xresoln(ngrid)
105    ytn=(yt-yln(ngrid))*yresoln(ngrid)
106    ix=int(xtn)
107    jy=int(ytn)
108    nix=nint(xtn)
109    njy=nint(ytn)
110  else
111    ix=int(xt)
112    jy=int(yt)
113    nix=nint(xt)
114    njy=nint(yt)
115  endif
116  ixp=ix+1
117  jyp=jy+1
118
119
120  ! Determine probability of deposition
121  !************************************
122
123      if ((DRYDEP).and.(zt.lt.2.*href)) then
124        do ks=1,nspec
125          if (DRYDEPSPEC(ks)) then
126            if (depoindicator(ks)) then
127              if (ngrid.le.0) then
128                call interpol_vdep(ks,vdepo(ks))
129              else
130                call interpol_vdep_nests(ks,vdepo(ks))
131              endif
132            endif
133  ! correction by Petra Seibert, 10 April 2001
134  !   this formulation means that prob(n) = 1 - f(0)*...*f(n)
135  !   where f(n) is the exponential term
136               prob(ks)=vdepo(ks)
137!               prob(ks)=vdepo(ks)/2./href
138! instead of prob - return vdepo -> result kg/m2/s
139          endif
140        end do
141      endif
142
143
144end subroutine get_vdep_prob
145
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