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 assignland |
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23 | |
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24 | !***************************************************************************** |
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25 | ! * |
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26 | ! This routine assigns fractions of the 13 landuse classes to each ECMWF * |
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27 | ! grid point. * |
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28 | ! The landuse inventory of * |
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29 | ! * |
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30 | ! Belward, A.S., Estes, J.E., and Kline, K.D., 1999, * |
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31 | ! The IGBP-DIS 1-Km Land-Cover Data Set DISCover: * |
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32 | ! A Project Overview: Photogrammetric Engineering and Remote Sensing , * |
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33 | ! v. 65, no. 9, p. 1013-1020 * |
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34 | ! * |
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35 | ! if there are no data in the inventory * |
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36 | ! the ECMWF land/sea mask is used to distinguish * |
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37 | ! between sea (-> ocean) and land (-> grasslands). * |
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38 | ! * |
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39 | ! Author: A. Stohl * |
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40 | ! * |
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41 | ! 5 December 1996 * |
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42 | ! 8 February 1999 Additional use of nests, A. Stohl * |
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43 | ! 29 December 2006 new landuse inventory, S. Eckhardt * |
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44 | !***************************************************************************** |
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45 | ! * |
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46 | ! Variables: * |
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47 | ! xlanduse fractions of numclass landuses for each model grid point * |
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48 | ! landinvent landuse inventory (0.3 deg resolution) * |
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49 | ! * |
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50 | !***************************************************************************** |
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51 | |
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52 | use par_mod |
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53 | use com_mod |
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54 | |
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55 | implicit none |
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56 | |
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57 | integer :: ix,jy,k,l,li,nrefine,iix,jjy |
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58 | integer,parameter :: lumaxx=1200,lumaxy=600 |
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59 | integer,parameter :: xlon0lu=-180,ylat0lu=-90 |
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60 | real,parameter :: dxlu=0.3 |
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61 | real :: xlon,ylat,sumperc,p,xi,yj |
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62 | real :: xlandusep(lumaxx,lumaxy,numclass) |
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63 | ! character*2 ck |
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64 | |
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65 | do ix=1,lumaxx |
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66 | do jy=1,lumaxy |
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67 | do k=1,numclass |
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68 | xlandusep(ix,jy,k)=0. |
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69 | end do |
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70 | sumperc=0. |
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71 | do li=1,3 |
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72 | sumperc=sumperc+landinvent(ix,jy,li+3) |
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73 | end do |
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74 | do li=1,3 |
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75 | k=landinvent(ix,jy,li) |
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76 | if (sumperc.gt.0) then |
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77 | p=landinvent(ix,jy,li+3)/sumperc |
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78 | else |
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79 | p=0 |
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80 | endif |
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81 | ! p has values between 0 and 1 |
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82 | xlandusep(ix,jy,k)=p |
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83 | end do |
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84 | end do |
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85 | end do |
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86 | |
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87 | ! do 13 k=1,11 |
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88 | ! write (ck,'(i2.2)') k |
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89 | ! open(4,file='xlandusetest'//ck,form='formatted') |
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90 | ! do 11 ix=1,lumaxx |
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91 | !11 write (4,*) (xlandusep(ix,jy,k),jy=1,lumaxy) |
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92 | !11 write (4,*) (landinvent(ix,jy,k),jy=1,lumaxy) |
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93 | !13 close(4) |
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94 | |
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95 | ! write (*,*) xlon0,ylat0,xlon0n(1),ylat0n(1),nxmin1,nymin1 |
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96 | ! write (*,*) dx, dy, dxout, dyout, ylat0, xlon0 |
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97 | nrefine=10 |
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98 | do ix=0,nxmin1 |
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99 | do jy=0,nymin1 |
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100 | do k=1,numclass |
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101 | sumperc=0. |
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102 | xlanduse(ix,jy,k)=0. |
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103 | end do |
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104 | do iix=1, nrefine |
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105 | xlon=(ix+(iix-1)/real(nrefine))*dx+xlon0 ! longitude, should be between -180 and 179 |
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106 | if (xlon.ge.(xlon0lu+lumaxx*dxlu)) then |
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107 | xlon=xlon-lumaxx*dxlu |
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108 | endif |
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109 | do jjy=1, nrefine |
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110 | ylat=(jy+(jjy-1)/real(nrefine))*dy+ylat0 ! and lat. of each gridpoint |
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111 | xi=int((xlon-xlon0lu)/dxlu)+1 |
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112 | yj=int((ylat-ylat0lu)/dxlu)+1 |
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113 | if (xi.gt.lumaxx) xi=xi-lumaxx |
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114 | if (yj.gt.lumaxy) yj=yj-lumaxy |
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115 | if (xi.lt.0) then |
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116 | write (*,*) 'problem with landuseinv sampling: ', & |
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117 | xlon,xlon0lu,ix,iix,xlon0,dx,nxmax |
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118 | stop |
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119 | endif |
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120 | do k=1,numclass |
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121 | xlanduse(ix,jy,k)= & |
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122 | xlanduse(ix,jy,k)+xlandusep(int(xi),int(yj),k) |
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123 | sumperc=sumperc+xlanduse(ix,jy,k) ! just for the check if landuseinv. is available |
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124 | end do |
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125 | end do |
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126 | end do |
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127 | if (sumperc.gt.0) then ! detailed landuse available |
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128 | sumperc=0. |
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129 | do k=1,numclass |
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130 | xlanduse(ix,jy,k)= & |
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131 | xlanduse(ix,jy,k)/real(nrefine*nrefine) |
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132 | sumperc=sumperc+xlanduse(ix,jy,k) |
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133 | end do |
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134 | !cc the sum of all categories should be 1 ... 100 percent ... in order to get vdep right! |
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135 | if (sumperc.lt.1-1E-5) then |
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136 | do k=1,numclass |
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137 | xlanduse(ix,jy,k)= & |
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138 | xlanduse(ix,jy,k)/sumperc |
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139 | end do |
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140 | endif |
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141 | else |
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142 | if (lsm(ix,jy).lt.0.1) then ! over sea -> ocean |
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143 | xlanduse(ix,jy,3)=1. |
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144 | else ! over land -> rangeland |
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145 | xlanduse(ix,jy,7)=1. |
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146 | endif |
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147 | endif |
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148 | |
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149 | |
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150 | end do |
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151 | end do |
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152 | |
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153 | !*********************************** |
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154 | ! for test: write out xlanduse |
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155 | |
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156 | ! open(4,file='landusetest',form='formatted') |
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157 | ! do 56 k=1,13 |
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158 | ! do 55 ix=0,nxmin1 |
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159 | !55 write (4,*) (xlanduse(ix,jy,k),jy=0,nymin1) |
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160 | !56 continue |
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161 | ! close(4) |
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162 | ! write (*,*) 'landuse written' |
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163 | !stop |
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164 | ! open(4,file='landseatest'//ck,form='formatted') |
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165 | ! do 57 ix=0,nxmin1 |
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166 | !57 write (4,*) (lsm(ix,jy),jy=0,nymin1) |
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167 | ! write (*,*) 'landseamask written' |
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168 | |
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169 | !**************************************** |
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170 | ! Same as above, but for the nested grids |
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171 | !**************************************** |
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172 | |
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173 | !************** TEST ******************** |
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174 | ! dyn(1)=dyn(1)/40 |
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175 | ! dxn(1)=dxn(1)/40 |
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176 | ! xlon0n(1)=1 |
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177 | ! ylat0n(1)=50 |
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178 | !************** TEST ******************** |
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179 | |
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180 | do l=1,numbnests |
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181 | do ix=0,nxn(l)-1 |
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182 | do jy=0,nyn(l)-1 |
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183 | do k=1,numclass |
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184 | sumperc=0. |
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185 | xlandusen(ix,jy,k,l)=0. |
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186 | end do |
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187 | do iix=1, nrefine |
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188 | xlon=(ix+(iix-1)/real(nrefine))*dxn(l)+xlon0n(l) |
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189 | do jjy=1, nrefine |
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190 | ylat=(jy+(jjy-1)/real(nrefine))*dyn(l)+ylat0n(l) |
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191 | xi=int((xlon-xlon0lu)/dxlu)+1 |
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192 | yj=int((ylat-ylat0lu)/dxlu)+1 |
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193 | if (xi.gt.lumaxx) xi=xi-lumaxx |
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194 | if (yj.gt.lumaxy) yj=yj-lumaxy |
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195 | do k=1,numclass |
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196 | xlandusen(ix,jy,k,l)=xlandusen(ix,jy,k,l)+ & |
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197 | xlandusep(int(xi),int(yj),k) |
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198 | sumperc=sumperc+xlandusen(ix,jy,k,l) |
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199 | end do |
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200 | end do |
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201 | end do |
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202 | if (sumperc.gt.0) then ! detailed landuse available |
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203 | sumperc=0. |
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204 | do k=1,numclass |
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205 | xlandusen(ix,jy,k,l)= & |
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206 | xlandusen(ix,jy,k,l)/real(nrefine*nrefine) |
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207 | sumperc=sumperc+xlandusen(ix,jy,k,l) |
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208 | end do |
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209 | !cc the sum of all categories should be 1 ... 100 percent ... in order to get vdep right! |
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210 | if (sumperc.lt.1-1E-5) then |
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211 | do k=1,numclass |
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212 | xlandusen(ix,jy,k,l)=xlandusen(ix,jy,k,l)/sumperc |
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213 | end do |
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214 | endif |
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215 | else ! check land/sea mask |
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216 | if (lsmn(ix,jy,l).lt.0.1) then ! over sea -> ocean |
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217 | xlandusen(ix,jy,3,l)=1. |
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218 | else ! over land -> grasslands |
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219 | xlandusen(ix,jy,7,l)=1. |
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220 | endif |
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221 | endif |
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222 | end do |
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223 | end do |
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224 | end do |
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225 | |
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226 | !*********************************** |
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227 | ! for test: write out xlanduse |
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228 | |
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229 | ! do 66 k=1,11 |
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230 | ! write (ck,'(i2.2)') k |
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231 | ! open(4,file='nlandusetest'//ck,form='formatted') |
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232 | ! do 65 ix=0,nxn(1)-1 |
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233 | !65 write (4,*) (xlandusen(ix,jy,k,1),jy=0,nyn(1)-1) |
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234 | !66 close(4) |
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235 | |
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236 | ! write (*,*) 'landuse nested written' |
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237 | |
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238 | |
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239 | end subroutine assignland |
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