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 outgrid_init |
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23 | ! |
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24 | !***************************************************************************** |
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25 | ! * |
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26 | ! This routine initializes the output grids * |
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27 | ! * |
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28 | ! Author: A. Stohl * |
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29 | ! * |
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30 | ! 7 August 2002 * |
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31 | ! * |
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32 | !***************************************************************************** |
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33 | ! * |
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34 | ! Variables: * |
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35 | ! * |
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36 | ! area surface area of all output grid cells * |
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37 | ! areaeast eastward facing wall area of all output grid cells * |
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38 | ! areanorth northward facing wall area of all output grid cells * |
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39 | ! volume volumes of all output grid cells * |
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40 | ! * |
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41 | !***************************************************************************** |
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42 | |
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43 | use flux_mod |
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44 | use oh_mod |
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45 | use unc_mod |
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46 | use outg_mod |
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47 | use par_mod |
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48 | use com_mod |
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49 | |
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50 | implicit none |
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51 | |
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52 | integer :: ix,jy,kz,i,nage,l,iix,jjy,ixp,jyp,i1,j1,j,ngrid |
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53 | integer :: ks,kp,stat |
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54 | real :: ylat,gridarea,ylatp,ylatm,hzone,cosfactm,cosfactp |
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55 | real :: xlon,xl,yl,ddx,ddy,rddx,rddy,p1,p2,p3,p4,xtn,ytn,oroh |
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56 | real,parameter :: eps=nxmax/3.e5 |
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57 | |
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58 | |
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59 | ! Compute surface area and volume of each grid cell: area, volume; |
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60 | ! and the areas of the northward and eastward facing walls: areaeast, areanorth |
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61 | !*********************************************************************** |
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62 | do jy=0,numygrid-1 |
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63 | ylat=outlat0+(real(jy)+0.5)*dyout |
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64 | ylatp=ylat+0.5*dyout |
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65 | ylatm=ylat-0.5*dyout |
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66 | if ((ylatm.lt.0).and.(ylatp.gt.0.)) then |
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67 | hzone=dyout*r_earth*pi180 |
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68 | else |
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69 | |
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70 | ! Calculate area of grid cell with formula M=2*pi*R*h*dx/360, |
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71 | ! see Netz, Formeln der Mathematik, 5. Auflage (1983), p.90 |
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72 | !************************************************************ |
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73 | |
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74 | cosfactp=cos(ylatp*pi180) |
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75 | cosfactm=cos(ylatm*pi180) |
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76 | if (cosfactp.lt.cosfactm) then |
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77 | hzone=sqrt(1-cosfactp**2)- & |
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78 | sqrt(1-cosfactm**2) |
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79 | hzone=hzone*r_earth |
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80 | else |
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81 | hzone=sqrt(1-cosfactm**2)- & |
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82 | sqrt(1-cosfactp**2) |
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83 | hzone=hzone*r_earth |
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84 | endif |
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85 | endif |
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86 | |
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87 | ! Surface are of a grid cell at a latitude ylat |
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88 | !********************************************** |
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89 | |
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90 | gridarea=2.*pi*r_earth*hzone*dxout/360. |
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91 | |
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92 | do ix=0,numxgrid-1 |
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93 | area(ix,jy)=gridarea |
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94 | |
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95 | ! Volume = area x box height |
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96 | !*************************** |
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97 | |
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98 | volume(ix,jy,1)=area(ix,jy)*outheight(1) |
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99 | areaeast(ix,jy,1)=dyout*r_earth*pi180*outheight(1) |
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100 | areanorth(ix,jy,1)=cos(ylat*pi180)*dxout*r_earth*pi180* & |
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101 | outheight(1) |
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102 | do kz=2,numzgrid |
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103 | areaeast(ix,jy,kz)=dyout*r_earth*pi180* & |
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104 | (outheight(kz)-outheight(kz-1)) |
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105 | areanorth(ix,jy,kz)=cos(ylat*pi180)*dxout*r_earth*pi180* & |
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106 | (outheight(kz)-outheight(kz-1)) |
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107 | volume(ix,jy,kz)=area(ix,jy)*(outheight(kz)-outheight(kz-1)) |
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108 | end do |
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109 | end do |
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110 | end do |
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111 | |
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112 | |
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113 | |
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114 | |
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115 | !****************************************************************** |
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116 | ! Determine average height of model topography in output grid cells |
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117 | !****************************************************************** |
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118 | |
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119 | ! Loop over all output grid cells |
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120 | !******************************** |
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121 | |
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122 | do jjy=0,numygrid-1 |
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123 | do iix=0,numxgrid-1 |
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124 | oroh=0. |
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125 | |
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126 | ! Take 100 samples of the topography in every grid cell |
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127 | !****************************************************** |
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128 | |
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129 | do j1=1,10 |
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130 | ylat=outlat0+(real(jjy)+real(j1)/10.-0.05)*dyout |
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131 | yl=(ylat-ylat0)/dy |
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132 | do i1=1,10 |
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133 | xlon=outlon0+(real(iix)+real(i1)/10.-0.05)*dxout |
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134 | xl=(xlon-xlon0)/dx |
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135 | |
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136 | ! Determine the nest we are in |
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137 | !***************************** |
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138 | |
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139 | ngrid=0 |
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140 | do j=numbnests,1,-1 |
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141 | if ((xl.gt.xln(j)+eps).and.(xl.lt.xrn(j)-eps).and. & |
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142 | (yl.gt.yln(j)+eps).and.(yl.lt.yrn(j)-eps)) then |
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143 | ngrid=j |
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144 | goto 43 |
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145 | endif |
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146 | end do |
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147 | 43 continue |
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148 | |
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149 | ! Determine (nested) grid coordinates and auxiliary parameters used for interpolation |
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150 | !***************************************************************************** |
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151 | |
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152 | if (ngrid.gt.0) then |
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153 | xtn=(xl-xln(ngrid))*xresoln(ngrid) |
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154 | ytn=(yl-yln(ngrid))*yresoln(ngrid) |
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155 | ix=int(xtn) |
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156 | jy=int(ytn) |
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157 | ddy=ytn-real(jy) |
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158 | ddx=xtn-real(ix) |
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159 | else |
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160 | ix=int(xl) |
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161 | jy=int(yl) |
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162 | ddy=yl-real(jy) |
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163 | ddx=xl-real(ix) |
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164 | endif |
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165 | ixp=ix+1 |
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166 | jyp=jy+1 |
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167 | rddx=1.-ddx |
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168 | rddy=1.-ddy |
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169 | p1=rddx*rddy |
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170 | p2=ddx*rddy |
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171 | p3=rddx*ddy |
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172 | p4=ddx*ddy |
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173 | |
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174 | if (ngrid.gt.0) then |
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175 | oroh=oroh+p1*oron(ix ,jy ,ngrid) & |
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176 | + p2*oron(ixp,jy ,ngrid) & |
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177 | + p3*oron(ix ,jyp,ngrid) & |
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178 | + p4*oron(ixp,jyp,ngrid) |
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179 | else |
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180 | oroh=oroh+p1*oro(ix ,jy) & |
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181 | + p2*oro(ixp,jy) & |
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182 | + p3*oro(ix ,jyp) & |
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183 | + p4*oro(ixp,jyp) |
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184 | endif |
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185 | end do |
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186 | end do |
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187 | |
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188 | ! Divide by the number of samples taken |
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189 | !************************************** |
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190 | |
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191 | oroout(iix,jjy)=oroh/100. |
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192 | end do |
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193 | end do |
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194 | |
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195 | ! if necessary allocate flux fields |
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196 | if (iflux.eq.1) then |
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197 | allocate(flux(6,0:numxgrid-1,0:numygrid-1,numzgrid, & |
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198 | 1:nspec,1:maxpointspec_act,1:nageclass),stat=stat) |
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199 | if (stat.ne.0) write(*,*)'ERROR: could not allocate flux array ' |
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200 | endif |
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201 | |
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202 | !write (*,*) 'allocating: in a sec',OHREA |
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203 | if (OHREA.eqv..TRUE.) then |
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204 | ! write (*,*) 'allocating: ',maxxOH,maxyOH,maxzOH |
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205 | allocate(OH_field(12,0:maxxOH-1,0:maxyOH-1,maxzOH) & |
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206 | ,stat=stat) |
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207 | if (stat.ne.0) write(*,*)'ERROR: could not allocate OH array ' |
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208 | allocate(OH_field_height(7) & |
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209 | ,stat=stat) |
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210 | if (stat.ne.0) write(*,*)'ERROR: could not allocate OH array ' |
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211 | endif |
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212 | ! gridunc,griduncn uncertainty of outputted concentrations |
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213 | allocate(gridunc(0:numxgrid-1,0:numygrid-1,numzgrid,maxspec, & |
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214 | maxpointspec_act,nclassunc,maxageclass),stat=stat) |
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215 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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216 | if (ldirect.gt.0) then |
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217 | allocate(wetgridunc(0:numxgrid-1,0:numygrid-1,maxspec, & |
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218 | maxpointspec_act,nclassunc,maxageclass),stat=stat) |
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219 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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220 | allocate(drygridunc(0:numxgrid-1,0:numygrid-1,maxspec, & |
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221 | maxpointspec_act,nclassunc,maxageclass),stat=stat) |
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222 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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223 | endif |
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224 | !write (*,*) 'Dimensions for fields', numxgrid,numygrid, & |
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225 | ! maxspec,maxpointspec_act,nclassunc,maxageclass |
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226 | |
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227 | write (*,*) ' Allocating fields for nested and global output (x,y): ', & |
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228 | max(numxgrid,numxgridn),max(numygrid,numygridn) |
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229 | |
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230 | ! allocate fields for concoutput with maximum dimension of outgrid |
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231 | ! and outgrid_nest |
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232 | |
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233 | allocate(gridsigma(0:max(numxgrid,numxgridn)-1, & |
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234 | 0:max(numygrid,numygridn)-1,numzgrid),stat=stat) |
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235 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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236 | allocate(grid(0:max(numxgrid,numxgridn)-1, & |
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237 | 0:max(numygrid,numygridn)-1,numzgrid),stat=stat) |
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238 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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239 | allocate(densityoutgrid(0:max(numxgrid,numxgridn)-1, & |
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240 | 0:max(numygrid,numygridn)-1,numzgrid),stat=stat) |
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241 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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242 | |
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243 | allocate(factor3d(0:max(numxgrid,numxgridn)-1, & |
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244 | 0:max(numygrid,numygridn)-1,numzgrid),stat=stat) |
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245 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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246 | allocate(sparse_dump_r(max(numxgrid,numxgridn)* & |
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247 | max(numygrid,numygridn)*numzgrid),stat=stat) |
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248 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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249 | allocate(sparse_dump_i(max(numxgrid,numxgridn)* & |
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250 | max(numygrid,numygridn)*numzgrid),stat=stat) |
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251 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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252 | |
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253 | ! deposition fields are only allocated for forward runs |
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254 | if (ldirect.gt.0) then |
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255 | allocate(wetgridsigma(0:max(numxgrid,numxgridn)-1, & |
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256 | 0:max(numygrid,numygridn)-1),stat=stat) |
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257 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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258 | allocate(drygridsigma(0:max(numxgrid,numxgridn)-1, & |
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259 | 0:max(numygrid,numygridn)-1),stat=stat) |
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260 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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261 | allocate(wetgrid(0:max(numxgrid,numxgridn)-1, & |
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262 | 0:max(numygrid,numygridn)-1),stat=stat) |
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263 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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264 | allocate(drygrid(0:max(numxgrid,numxgridn)-1, & |
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265 | 0:max(numygrid,numygridn)-1),stat=stat) |
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266 | if (stat.ne.0) write(*,*)'ERROR: could not allocate gridunc' |
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267 | endif |
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268 | |
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269 | ! Initial condition field |
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270 | |
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271 | if (linit_cond.gt.0) then |
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272 | allocate(init_cond(0:numxgrid-1,0:numygrid-1,numzgrid,maxspec, & |
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273 | maxpointspec_act),stat=stat) |
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274 | if (stat.ne.0) write(*,*)'ERROR: could not allocate init_cond' |
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275 | endif |
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276 | |
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277 | !************************ |
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278 | ! Initialize output grids |
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279 | !************************ |
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280 | |
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281 | do ks=1,nspec |
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282 | do kp=1,maxpointspec_act |
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283 | do i=1,numreceptor |
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284 | ! Receptor points |
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285 | creceptor(i,ks)=0. |
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286 | end do |
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287 | do nage=1,nageclass |
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288 | do jy=0,numygrid-1 |
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289 | do ix=0,numxgrid-1 |
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290 | do l=1,nclassunc |
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291 | ! Deposition fields |
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292 | if (ldirect.gt.0) then |
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293 | wetgridunc(ix,jy,ks,kp,l,nage)=0. |
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294 | drygridunc(ix,jy,ks,kp,l,nage)=0. |
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295 | endif |
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296 | do kz=1,numzgrid |
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297 | if (iflux.eq.1) then |
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298 | ! Flux fields |
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299 | do i=1,5 |
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300 | flux(i,ix,jy,kz,ks,kp,nage)=0. |
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301 | end do |
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302 | endif |
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303 | ! Initial condition field |
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304 | if ((l.eq.1).and.(nage.eq.1).and.(linit_cond.gt.0)) & |
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305 | init_cond(ix,jy,kz,ks,kp)=0. |
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306 | ! Concentration fields |
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307 | gridunc(ix,jy,kz,ks,kp,l,nage)=0. |
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308 | end do |
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309 | end do |
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310 | end do |
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311 | end do |
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312 | end do |
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313 | end do |
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314 | end do |
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315 | |
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316 | |
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317 | |
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318 | end subroutine outgrid_init |
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