1 | !********************************************************************** |
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2 | ! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 * |
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3 | ! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, * |
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4 | ! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann * |
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5 | ! * |
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6 | ! This file is part of FLEXPART. * |
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7 | ! * |
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8 | ! FLEXPART is free software: you can redistribute it and/or modify * |
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9 | ! it under the terms of the GNU General Public License as published by* |
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10 | ! the Free Software Foundation, either version 3 of the License, or * |
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11 | ! (at your option) any later version. * |
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12 | ! * |
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13 | ! FLEXPART is distributed in the hope that it will be useful, * |
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14 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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15 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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16 | ! GNU General Public License for more details. * |
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17 | ! * |
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18 | ! You should have received a copy of the GNU General Public License * |
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19 | ! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
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20 | !********************************************************************** |
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21 | |
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22 | subroutine conccalc(itime,weight) |
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23 | ! i i |
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24 | !***************************************************************************** |
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25 | ! * |
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26 | ! Calculation of the concentrations on a regular grid using volume * |
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27 | ! sampling * |
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28 | ! * |
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29 | ! Author: A. Stohl * |
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30 | ! * |
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31 | ! 24 May 1996 * |
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32 | ! * |
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33 | ! April 2000: Update to calculate age spectra * |
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34 | ! Bug fix to avoid negative conc. at the domain boundaries, * |
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35 | ! as suggested by Petra Seibert * |
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36 | ! * |
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37 | ! 2 July 2002: re-order if-statements in order to optimize CPU time * |
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38 | ! * |
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39 | ! * |
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40 | !***************************************************************************** |
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41 | ! * |
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42 | ! Variables: * |
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43 | ! nspeciesdim = nspec for forward runs, 1 for backward runs * |
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44 | ! * |
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45 | !***************************************************************************** |
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46 | |
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47 | use unc_mod |
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48 | use outg_mod |
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49 | use par_mod |
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50 | use com_mod |
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51 | |
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52 | implicit none |
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53 | |
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54 | integer :: itime,itage,i,ix,jy,ixp,jyp,kz,ks,n,nage |
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55 | integer :: il,ind,indz,indzp,nrelpointer |
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56 | real :: rddx,rddy,p1,p2,p3,p4,dz1,dz2,dz |
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57 | real :: weight,hx,hy,hz,h,xd,yd,zd,xkern,r2,c(maxspec),ddx,ddy |
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58 | real :: rhoprof(2),rhoi |
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59 | real :: xl,yl,wx,wy,w |
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60 | real,parameter :: factor=.596831, hxmax=6.0, hymax=4.0, hzmax=150. |
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61 | ! integer xscav_count |
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62 | |
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63 | ! For forward simulations, make a loop over the number of species; |
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64 | ! for backward simulations, make an additional loop over the |
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65 | ! releasepoints |
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66 | !*************************************************************************** |
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67 | ! xscav_count=0 |
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68 | do i=1,numpart |
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69 | if (itra1(i).ne.itime) goto 20 |
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70 | |
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71 | ! Determine age class of the particle |
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72 | itage=abs(itra1(i)-itramem(i)) |
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73 | do nage=1,nageclass |
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74 | if (itage.lt.lage(nage)) goto 33 |
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75 | end do |
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76 | 33 continue |
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77 | |
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78 | ! if (xscav_frac1(i,1).lt.0) xscav_count=xscav_count+1 |
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79 | |
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80 | ! For special runs, interpolate the air density to the particle position |
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81 | !************************************************************************ |
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82 | !*********************************************************************** |
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83 | !AF IND_SOURCE switches between different units for concentrations at the source |
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84 | !Af NOTE that in backward simulations the release of particles takes place |
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85 | !Af at the receptor and the sampling at the source. |
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86 | !Af 1="mass" |
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87 | !Af 2="mass mixing ratio" |
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88 | !Af IND_RECEPTOR switches between different units for concentrations at the receptor |
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89 | !Af 1="mass" |
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90 | !Af 2="mass mixing ratio" |
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91 | |
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92 | !Af switches for the conccalcfile: |
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93 | !AF IND_SAMP = 0 : xmass * 1 |
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94 | !Af IND_SAMP = -1 : xmass / rho |
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95 | |
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96 | !Af ind_samp is defined in readcommand.f |
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97 | |
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98 | if ( ind_samp .eq. -1 ) then |
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99 | |
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100 | ix=int(xtra1(i)) |
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101 | jy=int(ytra1(i)) |
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102 | ixp=ix+1 |
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103 | jyp=jy+1 |
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104 | ddx=xtra1(i)-real(ix) |
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105 | ddy=ytra1(i)-real(jy) |
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106 | rddx=1.-ddx |
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107 | rddy=1.-ddy |
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108 | p1=rddx*rddy |
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109 | p2=ddx*rddy |
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110 | p3=rddx*ddy |
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111 | p4=ddx*ddy |
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112 | |
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113 | ! eso: Temporary fix for particle exactly at north pole |
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114 | if (jyp >= nymax) then |
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115 | ! write(*,*) 'WARNING: conccalc.f90 jyp >= nymax' |
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116 | jyp=jyp-1 |
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117 | end if |
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118 | |
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119 | do il=2,nz |
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120 | if (height(il).gt.ztra1(i)) then |
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121 | indz=il-1 |
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122 | indzp=il |
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123 | goto 6 |
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124 | endif |
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125 | end do |
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126 | 6 continue |
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127 | |
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128 | dz1=ztra1(i)-height(indz) |
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129 | dz2=height(indzp)-ztra1(i) |
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130 | dz=1./(dz1+dz2) |
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131 | |
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132 | ! Take density from 2nd wind field in memory (accurate enough, no time interpolation needed) |
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133 | !***************************************************************************** |
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134 | do ind=indz,indzp |
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135 | rhoprof(ind-indz+1)=p1*rho(ix ,jy ,ind,memind(2)) & |
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136 | +p2*rho(ixp,jy ,ind,2) & |
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137 | +p3*rho(ix ,jyp,ind,2) & |
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138 | +p4*rho(ixp,jyp,ind,2) |
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139 | end do |
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140 | rhoi=(dz1*rhoprof(2)+dz2*rhoprof(1))*dz |
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141 | elseif (ind_samp.eq.0) then |
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142 | rhoi = 1. |
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143 | endif |
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144 | |
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145 | |
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146 | !**************************************************************************** |
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147 | ! 1. Evaluate grid concentrations using a uniform kernel of bandwidths dx, dy |
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148 | !**************************************************************************** |
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149 | |
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150 | |
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151 | ! For backward simulations, look from which release point the particle comes from |
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152 | ! For domain-filling trajectory option, npoint contains a consecutive particle |
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153 | ! number, not the release point information. Therefore, nrelpointer is set to 1 |
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154 | ! for the domain-filling option. |
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155 | !***************************************************************************** |
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156 | |
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157 | if ((ioutputforeachrelease.eq.0).or.(mdomainfill.eq.1)) then |
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158 | nrelpointer=1 |
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159 | else |
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160 | nrelpointer=npoint(i) |
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161 | endif |
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162 | |
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163 | do kz=1,numzgrid ! determine height of cell |
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164 | if (outheight(kz).gt.ztra1(i)) goto 21 |
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165 | end do |
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166 | 21 continue |
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167 | if (kz.le.numzgrid) then ! inside output domain |
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168 | |
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169 | |
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170 | !******************************** |
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171 | ! Do everything for mother domain |
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172 | !******************************** |
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173 | |
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174 | xl=(xtra1(i)*dx+xoutshift)/dxout |
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175 | yl=(ytra1(i)*dy+youtshift)/dyout |
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176 | ix=int(xl) |
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177 | if (xl.lt.0.) ix=ix-1 |
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178 | jy=int(yl) |
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179 | if (yl.lt.0.) jy=jy-1 |
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180 | |
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181 | |
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182 | |
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183 | ! For particles aged less than 3 hours, attribute particle mass to grid cell |
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184 | ! it resides in rather than use the kernel, in order to avoid its smoothing effect. |
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185 | ! For older particles, use the uniform kernel. |
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186 | ! If a particle is close to the domain boundary, do not use the kernel either. |
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187 | !***************************************************************************** |
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188 | |
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189 | if ((.not.lusekerneloutput).or.(itage.lt.10800).or. & |
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190 | (xl.lt.0.5).or.(yl.lt.0.5).or. & |
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191 | (xl.gt.real(numxgrid-1)-0.5).or. & |
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192 | (yl.gt.real(numygrid-1)-0.5)) then ! no kernel, direct attribution to grid cell |
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193 | if ((ix.ge.0).and.(jy.ge.0).and.(ix.le.numxgrid-1).and. & |
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194 | (jy.le.numygrid-1)) then |
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195 | if (DRYBKDEP.or.WETBKDEP) then |
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196 | do ks=1,nspec |
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197 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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198 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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199 | xmass1(i,ks)/rhoi*weight*max(xscav_frac1(i,ks),0.0) |
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200 | end do |
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201 | else |
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202 | if (lparticlecountoutput) then |
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203 | do ks=1,nspec |
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204 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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205 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+1 |
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206 | end do |
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207 | else |
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208 | do ks=1,nspec |
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209 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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210 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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211 | xmass1(i,ks)/rhoi*weight |
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212 | end do |
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213 | end if |
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214 | endif |
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215 | endif |
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216 | |
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217 | else ! attribution via uniform kernel |
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218 | |
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219 | ddx=xl-real(ix) ! distance to left cell border |
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220 | ddy=yl-real(jy) ! distance to lower cell border |
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221 | if (ddx.gt.0.5) then |
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222 | ixp=ix+1 |
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223 | wx=1.5-ddx |
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224 | else |
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225 | ixp=ix-1 |
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226 | wx=0.5+ddx |
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227 | endif |
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228 | |
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229 | if (ddy.gt.0.5) then |
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230 | jyp=jy+1 |
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231 | wy=1.5-ddy |
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232 | else |
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233 | jyp=jy-1 |
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234 | wy=0.5+ddy |
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235 | endif |
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236 | |
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237 | |
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238 | ! Determine mass fractions for four grid points |
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239 | !********************************************** |
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240 | |
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241 | if ((ix.ge.0).and.(ix.le.numxgrid-1)) then |
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242 | if ((jy.ge.0).and.(jy.le.numygrid-1)) then |
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243 | w=wx*wy |
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244 | if (DRYBKDEP.or.WETBKDEP) then |
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245 | do ks=1,nspec |
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246 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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247 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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248 | xmass1(i,ks)/rhoi*w*weight*max(xscav_frac1(i,ks),0.0) |
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249 | end do |
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250 | else |
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251 | do ks=1,nspec |
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252 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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253 | gridunc(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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254 | xmass1(i,ks)/rhoi*weight*w |
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255 | end do |
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256 | endif |
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257 | endif |
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258 | |
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259 | if ((jyp.ge.0).and.(jyp.le.numygrid-1)) then |
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260 | w=wx*(1.-wy) |
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261 | if (DRYBKDEP.or.WETBKDEP) then |
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262 | do ks=1,nspec |
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263 | gridunc(ix,jyp,kz,ks,nrelpointer,nclass(i),nage)= & |
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264 | gridunc(ix,jyp,kz,ks,nrelpointer,nclass(i),nage)+ & |
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265 | xmass1(i,ks)/rhoi*weight*w*max(xscav_frac1(i,ks),0.0) |
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266 | end do |
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267 | else |
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268 | do ks=1,nspec |
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269 | gridunc(ix,jyp,kz,ks,nrelpointer,nclass(i),nage)= & |
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270 | gridunc(ix,jyp,kz,ks,nrelpointer,nclass(i),nage)+ & |
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271 | xmass1(i,ks)/rhoi*weight*w |
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272 | end do |
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273 | endif |
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274 | endif |
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275 | endif !ix ge 0 |
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276 | |
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277 | |
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278 | if ((ixp.ge.0).and.(ixp.le.numxgrid-1)) then |
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279 | if ((jyp.ge.0).and.(jyp.le.numygrid-1)) then |
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280 | w=(1.-wx)*(1.-wy) |
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281 | if (DRYBKDEP.or.WETBKDEP) then |
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282 | do ks=1,nspec |
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283 | gridunc(ixp,jyp,kz,ks,nrelpointer,nclass(i),nage)= & |
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284 | gridunc(ixp,jyp,kz,ks,nrelpointer,nclass(i),nage)+ & |
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285 | xmass1(i,ks)/rhoi*w*weight*max(xscav_frac1(i,ks),0.0) |
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286 | end do |
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287 | else |
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288 | do ks=1,nspec |
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289 | gridunc(ixp,jyp,kz,ks,nrelpointer,nclass(i),nage)= & |
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290 | gridunc(ixp,jyp,kz,ks,nrelpointer,nclass(i),nage)+ & |
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291 | xmass1(i,ks)/rhoi*weight*w |
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292 | end do |
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293 | endif |
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294 | endif |
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295 | |
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296 | if ((jy.ge.0).and.(jy.le.numygrid-1)) then |
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297 | w=(1.-wx)*wy |
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298 | if (DRYBKDEP.or.WETBKDEP) then |
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299 | do ks=1,nspec |
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300 | gridunc(ixp,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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301 | gridunc(ixp,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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302 | xmass1(i,ks)/rhoi*weight*w*max(xscav_frac1(i,ks),0.0) |
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303 | end do |
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304 | else |
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305 | do ks=1,nspec |
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306 | gridunc(ixp,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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307 | gridunc(ixp,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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308 | xmass1(i,ks)/rhoi*weight*w |
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309 | end do |
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310 | endif |
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311 | endif |
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312 | endif !ixp ge 0 |
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313 | endif |
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314 | |
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315 | !************************************ |
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316 | ! Do everything for the nested domain |
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317 | !************************************ |
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318 | |
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319 | if (nested_output.eq.1) then |
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320 | xl=(xtra1(i)*dx+xoutshiftn)/dxoutn |
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321 | yl=(ytra1(i)*dy+youtshiftn)/dyoutn |
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322 | ix=int(xl) |
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323 | if (xl.lt.0.) ix=ix-1 |
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324 | jy=int(yl) |
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325 | if (yl.lt.0.) jy=jy-1 |
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326 | |
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327 | |
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328 | ! For particles aged less than 3 hours, attribute particle mass to grid cell |
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329 | ! it resides in rather than use the kernel, in order to avoid its smoothing effect. |
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330 | ! For older particles, use the uniform kernel. |
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331 | ! If a particle is close to the domain boundary, do not use the kernel either. |
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332 | !***************************************************************************** |
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333 | |
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334 | if ((itage.lt.10800).or.(xl.lt.0.5).or.(yl.lt.0.5).or. & |
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335 | (xl.gt.real(numxgridn-1)-0.5).or. & |
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336 | (yl.gt.real(numygridn-1)-0.5).or.((.not.lusekerneloutput))) then |
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337 | ! no kernel, direct attribution to grid cell |
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338 | if ((ix.ge.0).and.(jy.ge.0).and.(ix.le.numxgridn-1).and. & |
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339 | (jy.le.numygridn-1)) then |
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340 | if (DRYBKDEP.or.WETBKDEP) then |
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341 | do ks=1,nspec |
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342 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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343 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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344 | xmass1(i,ks)/rhoi*weight*max(xscav_frac1(i,ks),0.0) |
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345 | end do |
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346 | else |
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347 | if (lparticlecountoutput) then |
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348 | do ks=1,nspec |
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349 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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350 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+1 |
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351 | end do |
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352 | else |
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353 | do ks=1,nspec |
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354 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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355 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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356 | xmass1(i,ks)/rhoi*weight |
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357 | end do |
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358 | endif |
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359 | endif |
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360 | endif |
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361 | |
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362 | else ! attribution via uniform kernel |
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363 | |
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364 | ddx=xl-real(ix) ! distance to left cell border |
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365 | ddy=yl-real(jy) ! distance to lower cell border |
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366 | if (ddx.gt.0.5) then |
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367 | ixp=ix+1 |
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368 | wx=1.5-ddx |
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369 | else |
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370 | ixp=ix-1 |
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371 | wx=0.5+ddx |
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372 | endif |
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373 | |
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374 | if (ddy.gt.0.5) then |
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375 | jyp=jy+1 |
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376 | wy=1.5-ddy |
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377 | else |
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378 | jyp=jy-1 |
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379 | wy=0.5+ddy |
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380 | endif |
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381 | |
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382 | |
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383 | ! Determine mass fractions for four grid points |
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384 | !********************************************** |
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385 | |
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386 | if ((ix.ge.0).and.(ix.le.numxgridn-1)) then |
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387 | if ((jy.ge.0).and.(jy.le.numygridn-1)) then |
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388 | w=wx*wy |
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389 | if (DRYBKDEP.or.WETBKDEP) then |
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390 | do ks=1,nspec |
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391 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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392 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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393 | xmass1(i,ks)/rhoi*weight*w*max(xscav_frac1(i,ks),0.0) |
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394 | end do |
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395 | else |
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396 | do ks=1,nspec |
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397 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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398 | griduncn(ix,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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399 | xmass1(i,ks)/rhoi*weight*w |
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400 | end do |
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401 | endif |
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402 | endif |
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403 | |
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404 | if ((jyp.ge.0).and.(jyp.le.numygridn-1)) then |
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405 | w=wx*(1.-wy) |
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406 | if (DRYBKDEP.or.WETBKDEP) then |
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407 | do ks=1,nspec |
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408 | griduncn(ix,jyp,kz,ks,nrelpointer,nclass(i),nage)= & |
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409 | griduncn(ix,jyp,kz,ks,nrelpointer,nclass(i),nage)+ & |
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410 | xmass1(i,ks)/rhoi*weight*w*max(xscav_frac1(i,ks),0.0) |
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411 | end do |
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412 | else |
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413 | do ks=1,nspec |
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414 | griduncn(ix,jyp,kz,ks,nrelpointer,nclass(i),nage)= & |
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415 | griduncn(ix,jyp,kz,ks,nrelpointer,nclass(i),nage)+ & |
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416 | xmass1(i,ks)/rhoi*weight*w |
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417 | end do |
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418 | endif |
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419 | endif |
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420 | endif |
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421 | |
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422 | |
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423 | if ((ixp.ge.0).and.(ixp.le.numxgridn-1)) then |
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424 | if ((jyp.ge.0).and.(jyp.le.numygridn-1)) then |
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425 | w=(1.-wx)*(1.-wy) |
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426 | if (DRYBKDEP.or.WETBKDEP) then |
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427 | do ks=1,nspec |
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428 | griduncn(ixp,jyp,kz,ks,nrelpointer,nclass(i),nage)= & |
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429 | griduncn(ixp,jyp,kz,ks,nrelpointer,nclass(i),nage)+ & |
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430 | xmass1(i,ks)/rhoi*weight*w*max(xscav_frac1(i,ks),0.0) |
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431 | end do |
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432 | else |
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433 | do ks=1,nspec |
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434 | griduncn(ixp,jyp,kz,ks,nrelpointer,nclass(i),nage)= & |
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435 | griduncn(ixp,jyp,kz,ks,nrelpointer,nclass(i),nage)+ & |
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436 | xmass1(i,ks)/rhoi*weight*w |
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437 | end do |
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438 | endif |
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439 | endif |
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440 | |
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441 | if ((jy.ge.0).and.(jy.le.numygridn-1)) then |
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442 | w=(1.-wx)*wy |
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443 | if (DRYBKDEP.or.WETBKDEP) then |
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444 | do ks=1,nspec |
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445 | griduncn(ixp,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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446 | griduncn(ixp,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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447 | xmass1(i,ks)/rhoi*weight*w*max(xscav_frac1(i,ks),0.0) |
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448 | end do |
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449 | else |
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450 | do ks=1,nspec |
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451 | griduncn(ixp,jy,kz,ks,nrelpointer,nclass(i),nage)= & |
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452 | griduncn(ixp,jy,kz,ks,nrelpointer,nclass(i),nage)+ & |
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453 | xmass1(i,ks)/rhoi*weight*w |
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454 | end do |
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455 | endif |
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456 | endif |
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457 | endif |
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458 | endif |
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459 | endif |
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460 | endif |
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461 | 20 continue |
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462 | end do |
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463 | ! write(*,*) 'xscav count:',xscav_count |
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464 | |
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465 | !*********************************************************************** |
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466 | ! 2. Evaluate concentrations at receptor points, using the kernel method |
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467 | !*********************************************************************** |
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468 | |
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469 | do n=1,numreceptor |
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470 | |
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471 | |
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472 | ! Reset concentrations |
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473 | !********************* |
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474 | |
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475 | do ks=1,nspec |
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476 | c(ks)=0. |
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477 | end do |
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478 | |
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479 | |
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480 | ! Estimate concentration at receptor |
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481 | !*********************************** |
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482 | |
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483 | do i=1,numpart |
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484 | |
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485 | if (itra1(i).ne.itime) goto 40 |
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486 | itage=abs(itra1(i)-itramem(i)) |
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487 | |
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488 | hz=min(50.+0.3*sqrt(real(itage)),hzmax) |
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489 | zd=ztra1(i)/hz |
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490 | if (zd.gt.1.) goto 40 ! save computing time, leave loop |
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491 | |
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492 | hx=min((0.29+2.222e-3*sqrt(real(itage)))*dx+ & |
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493 | real(itage)*1.2e-5,hxmax) ! 80 km/day |
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494 | xd=(xtra1(i)-xreceptor(n))/hx |
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495 | if (xd*xd.gt.1.) goto 40 ! save computing time, leave loop |
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496 | |
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497 | hy=min((0.18+1.389e-3*sqrt(real(itage)))*dy+ & |
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498 | real(itage)*7.5e-6,hymax) ! 80 km/day |
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499 | yd=(ytra1(i)-yreceptor(n))/hy |
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500 | if (yd*yd.gt.1.) goto 40 ! save computing time, leave loop |
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501 | h=hx*hy*hz |
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502 | |
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503 | r2=xd*xd+yd*yd+zd*zd |
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504 | if (r2.lt.1.) then |
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505 | xkern=factor*(1.-r2) |
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506 | do ks=1,nspec |
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507 | c(ks)=c(ks)+xmass1(i,ks)*xkern/h |
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508 | end do |
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509 | endif |
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510 | 40 continue |
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511 | end do |
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512 | |
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513 | do ks=1,nspec |
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514 | creceptor(n,ks)=creceptor(n,ks)+2.*weight*c(ks)/receptorarea(n) |
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515 | end do |
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516 | end do |
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517 | |
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518 | end subroutine conccalc |
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