[e200b7a] | 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 | |
---|
| 22 | subroutine wetdepo(itime,ltsample,loutnext) |
---|
[db712a8] | 23 | ! i i i |
---|
| 24 | !***************************************************************************** |
---|
| 25 | ! * |
---|
| 26 | ! Calculation of wet deposition using the concept of scavenging coefficients.* |
---|
| 27 | ! For lack of detailed information, washout and rainout are jointly treated. * |
---|
| 28 | ! It is assumed that precipitation does not occur uniformly within the whole * |
---|
| 29 | ! grid cell, but that only a fraction of the grid cell experiences rainfall. * |
---|
| 30 | ! This fraction is parameterized from total cloud cover and rates of large * |
---|
| 31 | ! scale and convective precipitation. * |
---|
| 32 | ! * |
---|
| 33 | ! Author: A. Stohl * |
---|
| 34 | ! * |
---|
| 35 | ! 1 December 1996 * |
---|
| 36 | ! * |
---|
| 37 | ! Correction by Petra Seibert, Sept 2002: * |
---|
| 38 | ! use centred precipitation data for integration * |
---|
| 39 | ! Code may not be correct for decay of deposition! * |
---|
| 40 | ! * |
---|
| 41 | !***************************************************************************** |
---|
| 42 | ! * |
---|
| 43 | ! Variables: * |
---|
| 44 | ! ix,jy indices of output grid cell for each particle * |
---|
| 45 | ! itime [s] actual simulation time [s] * |
---|
| 46 | ! jpart particle index * |
---|
| 47 | ! ldeltat [s] interval since radioactive decay was computed * |
---|
| 48 | ! loutnext [s] time for which gridded deposition is next output * |
---|
| 49 | ! loutstep [s] interval at which gridded deposition is output * |
---|
| 50 | ! ltsample [s] interval over which mass is deposited * |
---|
| 51 | ! wetdeposit mass that is wet deposited * |
---|
| 52 | ! wetgrid accumulated deposited mass on output grid * |
---|
| 53 | ! wetscav scavenging coefficient * |
---|
| 54 | ! * |
---|
| 55 | ! Constants: * |
---|
| 56 | ! * |
---|
| 57 | !***************************************************************************** |
---|
[e200b7a] | 58 | |
---|
| 59 | use point_mod |
---|
| 60 | use par_mod |
---|
| 61 | use com_mod |
---|
| 62 | |
---|
| 63 | implicit none |
---|
| 64 | |
---|
[db375cc] | 65 | integer :: jpart,itime,ltsample,loutnext,ldeltat |
---|
| 66 | integer :: itage,nage |
---|
[4fbe7a5] | 67 | integer :: ks, kp |
---|
[6985a98] | 68 | integer(selected_int_kind(16)), dimension(nspec) :: blc_count, inc_count |
---|
[c9cf570] | 69 | real :: grfraction(3),wetscav |
---|
[e200b7a] | 70 | real :: wetdeposit(maxspec),restmass |
---|
| 71 | real,parameter :: smallnum = tiny(0.0) ! smallest number that can be handled |
---|
[8a65cb0] | 72 | |
---|
[db712a8] | 73 | ! Compute interval since radioactive decay of deposited mass was computed |
---|
| 74 | !************************************************************************ |
---|
[e200b7a] | 75 | |
---|
| 76 | if (itime.le.loutnext) then |
---|
| 77 | ldeltat=itime-(loutnext-loutstep) |
---|
| 78 | else ! first half of next interval |
---|
| 79 | ldeltat=itime-loutnext |
---|
| 80 | endif |
---|
| 81 | |
---|
[db712a8] | 82 | ! Loop over all particles |
---|
| 83 | !************************ |
---|
[e200b7a] | 84 | |
---|
[c8fc724] | 85 | blc_count(:)=0 |
---|
| 86 | inc_count(:)=0 |
---|
[8a65cb0] | 87 | |
---|
[e200b7a] | 88 | do jpart=1,numpart |
---|
[4fbe7a5] | 89 | |
---|
[e200b7a] | 90 | if (itra1(jpart).eq.-999999999) goto 20 |
---|
| 91 | if(ldirect.eq.1)then |
---|
| 92 | if (itra1(jpart).gt.itime) goto 20 |
---|
| 93 | else |
---|
| 94 | if (itra1(jpart).lt.itime) goto 20 |
---|
| 95 | endif |
---|
[8a65cb0] | 96 | |
---|
[c9cf570] | 97 | ! Determine age class of the particle - nage is used for the kernel |
---|
[341f4b7] | 98 | !****************************************************************** |
---|
[c9cf570] | 99 | itage=abs(itra1(jpart)-itramem(jpart)) |
---|
| 100 | do nage=1,nageclass |
---|
| 101 | if (itage.lt.lage(nage)) goto 33 |
---|
| 102 | end do |
---|
| 103 | 33 continue |
---|
[d6a0977] | 104 | |
---|
[92a74b2] | 105 | do ks=1,nspec ! loop over species |
---|
[8a65cb0] | 106 | |
---|
[6985a98] | 107 | if (WETDEPSPEC(ks).eqv..false.) cycle |
---|
[db712a8] | 108 | |
---|
| 109 | !************************************************** |
---|
| 110 | ! CALCULATE DEPOSITION |
---|
| 111 | !************************************************** |
---|
[0539b8f] | 112 | ! wetscav=0. |
---|
[0e085a8] | 113 | |
---|
[7919911] | 114 | ! write(*,*) ks,dquer(ks), crain_aero(ks),csnow_aero(ks) |
---|
[0e085a8] | 115 | ! if (((dquer(ks).le.0.).and.(weta_gas(ks).gt.0..or.wetb_gas(ks).gt.0.)) & |
---|
| 116 | ! .or. & |
---|
| 117 | ! ((dquer(ks).gt.0.).and.(crain_aero(ks).gt.0..or.csnow_aero(ks).gt.0.).or. & |
---|
| 118 | ! (ccn_aero(ks).gt0) .or. (in_aero(ks).gt.0) .or. (henry(ks).gt.0))) then |
---|
[585a533] | 119 | |
---|
[92a74b2] | 120 | call get_wetscav(itime,ltsample,loutnext,jpart,ks,grfraction,inc_count,blc_count,wetscav) |
---|
[0e085a8] | 121 | |
---|
[e200b7a] | 122 | |
---|
[4fbe7a5] | 123 | if (wetscav.gt.0.) then |
---|
[e200b7a] | 124 | wetdeposit(ks)=xmass1(jpart,ks)* & |
---|
[5f9d14a] | 125 | (1.-exp(-wetscav*abs(ltsample)))*grfraction(1) ! wet deposition |
---|
[4fbe7a5] | 126 | else ! if no scavenging |
---|
| 127 | wetdeposit(ks)=0. |
---|
| 128 | endif |
---|
[c9cf570] | 129 | |
---|
[4fbe7a5] | 130 | restmass = xmass1(jpart,ks)-wetdeposit(ks) |
---|
| 131 | if (ioutputforeachrelease.eq.1) then |
---|
| 132 | kp=npoint(jpart) |
---|
| 133 | else |
---|
| 134 | kp=1 |
---|
| 135 | endif |
---|
| 136 | if (restmass .gt. smallnum) then |
---|
| 137 | xmass1(jpart,ks)=restmass |
---|
[db712a8] | 138 | ! depostatistic |
---|
| 139 | ! wetdepo_sum(ks,kp)=wetdepo_sum(ks,kp)+wetdeposit(ks) |
---|
| 140 | ! depostatistic |
---|
[4fbe7a5] | 141 | else |
---|
| 142 | xmass1(jpart,ks)=0. |
---|
| 143 | endif |
---|
[db712a8] | 144 | ! Correct deposited mass to the last time step when radioactive decay of |
---|
| 145 | ! gridded deposited mass was calculated |
---|
[4fbe7a5] | 146 | if (decay(ks).gt.0.) then |
---|
| 147 | wetdeposit(ks)=wetdeposit(ks)*exp(abs(ldeltat)*decay(ks)) |
---|
| 148 | endif |
---|
[f13406c] | 149 | |
---|
[7919911] | 150 | ! endif ! no deposition |
---|
[92a74b2] | 151 | end do ! loop over species |
---|
[e200b7a] | 152 | |
---|
[db712a8] | 153 | ! Sabine Eckhardt, June 2008 create deposition runs only for forward runs |
---|
| 154 | ! Add the wet deposition to accumulated amount on output grid and nested output grid |
---|
| 155 | !***************************************************************************** |
---|
[e200b7a] | 156 | |
---|
[4fbe7a5] | 157 | if (ldirect.eq.1) then |
---|
| 158 | call wetdepokernel(nclass(jpart),wetdeposit,real(xtra1(jpart)), & |
---|
[5f9d14a] | 159 | real(ytra1(jpart)),nage,kp) |
---|
[4fbe7a5] | 160 | if (nested_output.eq.1) call wetdepokernel_nest(nclass(jpart), & |
---|
[5f9d14a] | 161 | wetdeposit,real(xtra1(jpart)),real(ytra1(jpart)),nage,kp) |
---|
[4fbe7a5] | 162 | endif |
---|
[e200b7a] | 163 | |
---|
| 164 | 20 continue |
---|
[4fbe7a5] | 165 | end do ! all particles |
---|
[e200b7a] | 166 | |
---|
[db712a8] | 167 | ! count the total number of below-cloud and in-cloud occurences: |
---|
[c8fc724] | 168 | tot_blc_count(1:nspec)=tot_blc_count(1:nspec)+blc_count(1:nspec) |
---|
| 169 | tot_inc_count(1:nspec)=tot_inc_count(1:nspec)+inc_count(1:nspec) |
---|
[8a65cb0] | 170 | |
---|
[e200b7a] | 171 | end subroutine wetdepo |
---|