[92a74b2] | 1 | subroutine get_vdep_prob(itime,xt,yt,zt,prob) |
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[7062fab] | 2 | ! i i i i o |
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| 3 | !***************************************************************************** |
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| 4 | ! * |
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[92a74b2] | 5 | ! Calculation of the probability for dyr deposition * |
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[7062fab] | 6 | ! * |
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[92a74b2] | 7 | ! Particle positions are read in - prob returned * |
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[7062fab] | 8 | ! * |
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| 9 | !***************************************************************************** |
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| 10 | ! * |
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| 11 | ! Variables: * |
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| 12 | ! itime [s] time at which this subroutine is entered * |
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| 13 | ! itimec [s] actual time, which is incremented in this subroutine * |
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| 14 | ! href [m] height for which dry deposition velocity is calculated * |
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| 15 | ! ldirect 1 forward, -1 backward * |
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| 16 | ! ldt [s] Time step for the next integration * |
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| 17 | ! lsynctime [s] Synchronisation interval of FLEXPART * |
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| 18 | ! ngrid index which grid is to be used * |
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| 19 | ! prob probability of absorption due to dry deposition * |
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| 20 | ! vdepo Deposition velocities for all species * |
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| 21 | ! xt,yt,zt Particle position * |
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| 22 | ! * |
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| 23 | !***************************************************************************** |
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| 24 | |
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| 25 | use point_mod |
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| 26 | use par_mod |
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| 27 | use com_mod |
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| 28 | use interpol_mod |
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| 29 | |
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| 30 | implicit none |
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| 31 | |
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| 32 | real(kind=dp) :: xt,yt |
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| 33 | real :: zt,xtn,ytn |
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| 34 | integer :: itime,i,j,k,memindnext |
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| 35 | integer :: nix,njy,ks |
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| 36 | real :: prob(maxspec),vdepo(maxspec) |
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| 37 | real,parameter :: eps=nxmax/3.e5 |
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| 38 | |
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| 39 | if (DRYDEP) then ! reset probability for deposition |
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| 40 | do ks=1,nspec |
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| 41 | depoindicator(ks)=.true. |
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| 42 | prob(ks)=0. |
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| 43 | end do |
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| 44 | endif |
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| 45 | |
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| 46 | |
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| 47 | ! Determine whether lat/long grid or polarstereographic projection |
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| 48 | ! is to be used |
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| 49 | ! Furthermore, determine which nesting level to be used |
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| 50 | !***************************************************************** |
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| 51 | |
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| 52 | if (nglobal.and.(yt.gt.switchnorthg)) then |
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| 53 | ngrid=-1 |
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| 54 | else if (sglobal.and.(yt.lt.switchsouthg)) then |
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| 55 | ngrid=-2 |
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| 56 | else |
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| 57 | ngrid=0 |
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| 58 | do j=numbnests,1,-1 |
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| 59 | if ((xt.gt.xln(j)+eps).and.(xt.lt.xrn(j)-eps).and. & |
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| 60 | (yt.gt.yln(j)+eps).and.(yt.lt.yrn(j)-eps)) then |
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| 61 | ngrid=j |
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| 62 | goto 23 |
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| 63 | endif |
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| 64 | end do |
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| 65 | 23 continue |
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| 66 | endif |
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| 67 | |
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| 68 | |
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| 69 | !*************************** |
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| 70 | ! Interpolate necessary data |
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| 71 | !*************************** |
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| 72 | |
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| 73 | if (abs(itime-memtime(1)).lt.abs(itime-memtime(2))) then |
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| 74 | memindnext=1 |
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| 75 | else |
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| 76 | memindnext=2 |
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| 77 | endif |
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| 78 | |
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| 79 | ! Determine nested grid coordinates |
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| 80 | !********************************** |
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| 81 | |
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| 82 | if (ngrid.gt.0) then |
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| 83 | xtn=(xt-xln(ngrid))*xresoln(ngrid) |
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| 84 | ytn=(yt-yln(ngrid))*yresoln(ngrid) |
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| 85 | ix=int(xtn) |
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| 86 | jy=int(ytn) |
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| 87 | nix=nint(xtn) |
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| 88 | njy=nint(ytn) |
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| 89 | else |
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| 90 | ix=int(xt) |
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| 91 | jy=int(yt) |
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| 92 | nix=nint(xt) |
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| 93 | njy=nint(yt) |
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| 94 | endif |
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| 95 | ixp=ix+1 |
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| 96 | jyp=jy+1 |
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| 97 | |
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| 98 | |
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| 99 | ! Determine probability of deposition |
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| 100 | !************************************ |
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| 101 | |
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| 102 | if ((DRYDEP).and.(zt.lt.2.*href)) then |
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| 103 | do ks=1,nspec |
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| 104 | if (DRYDEPSPEC(ks)) then |
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| 105 | if (depoindicator(ks)) then |
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| 106 | if (ngrid.le.0) then |
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| 107 | call interpol_vdep(ks,vdepo(ks)) |
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| 108 | else |
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| 109 | call interpol_vdep_nests(ks,vdepo(ks)) |
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| 110 | endif |
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| 111 | endif |
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| 112 | ! correction by Petra Seibert, 10 April 2001 |
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| 113 | ! this formulation means that prob(n) = 1 - f(0)*...*f(n) |
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| 114 | ! where f(n) is the exponential term |
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| 115 | prob(ks)=vdepo(ks) |
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| 116 | ! prob(ks)=vdepo(ks)/2./href |
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| 117 | ! instead of prob - return vdepo -> result kg/m2/s |
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| 118 | endif |
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| 119 | end do |
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| 120 | endif |
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| 121 | |
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| 122 | |
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[92a74b2] | 123 | end subroutine get_vdep_prob |
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[7062fab] | 124 | |
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