[16] | 1 | !*********************************************************************** |
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| 2 | !* Copyright 2012,2013 * |
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| 3 | !* Jerome Brioude, Delia Arnold, Andreas Stohl, Wayne Angevine, * |
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| 4 | !* John Burkhart, Massimo Cassiani, Adam Dingwell, Richard C Easter, Sabine Eckhardt,* |
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| 5 | !* Stephanie Evan, Jerome D Fast, Don Morton, Ignacio Pisso, * |
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| 6 | !* Petra Seibert, Gerard Wotawa, Caroline Forster, Harald Sodemann, * |
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| 7 | !* * |
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| 8 | !* This file is part of FLEXPART WRF * |
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| 9 | !* * |
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| 10 | !* FLEXPART is free software: you can redistribute it and/or modify * |
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| 11 | !* it under the terms of the GNU General Public License as published by* |
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| 12 | !* the Free Software Foundation, either version 3 of the License, or * |
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| 13 | !* (at your option) any later version. * |
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| 14 | !* * |
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| 15 | !* FLEXPART is distributed in the hope that it will be useful, * |
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| 16 | !* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 17 | !* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 18 | !* GNU General Public License for more details. * |
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| 19 | !* * |
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| 20 | !* You should have received a copy of the GNU General Public License * |
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| 21 | !* along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
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| 22 | !*********************************************************************** |
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| 23 | |
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| 24 | subroutine assignland |
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| 25 | !******************************************************************************* |
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| 26 | ! * |
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| 27 | ! Note: This is the FLEXPART_WRF version of subroutine assignland. * |
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| 28 | ! The computational grid is the WRF x-y grid rather than lat-lon. * |
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| 29 | ! * |
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| 30 | ! This routine assigns fractions of the 8 landuse classes to each ECMWF * |
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| 31 | ! grid point. * |
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| 32 | ! The landuse inventory of * |
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| 33 | ! * |
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| 34 | ! van de Velde R.J., Faber W.S., van Katwijk V.F., Kuylenstierna J.C.I., * |
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| 35 | ! Scholten H.J., Thewessen T.J.M., Verspuij M., Zevenbergen M. (1994): * |
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| 36 | ! The Preparation of a European Land Use Database. National Institute of * |
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| 37 | ! Public Health and Environmental Protection, Report nr 712401001, * |
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| 38 | ! Bilthoven, The Netherlands. * |
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| 39 | ! * |
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| 40 | ! is used to create a detailed landuse inventory for Europe. * |
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| 41 | ! * |
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| 42 | ! Outside of Europe, the ECMWF land/sea mask is used to distinguish * |
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| 43 | ! between sea (-> ocean) and land (-> grasslands). * |
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| 44 | ! * |
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| 45 | ! Author: A. Stohl * |
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| 46 | ! * |
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| 47 | ! 5 December 1996 * |
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| 48 | ! 8 February 1999 Additional use of nests, A. Stohl * |
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| 49 | ! * |
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| 50 | ! 14 October 2005 R. Easter -- modified for WRF. * |
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| 51 | ! The landuse inventory is not used at all. * |
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| 52 | ! The land/sea mask is used everywhere. * |
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| 53 | ! Feb 2012 J. Brioude: modified to fortran 90 * |
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| 54 | !******************************************************************************* |
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| 55 | ! * |
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| 56 | ! Variables: * |
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| 57 | ! xlanduse fractions of numclass landuses for each model grid point * |
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| 58 | ! xlandinvent landuse inventory (1/6 deg resolution) * |
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| 59 | ! * |
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| 60 | !******************************************************************************* |
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| 61 | |
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| 62 | use par_mod |
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| 63 | use com_mod |
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| 64 | |
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| 65 | implicit none |
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| 66 | integer :: ix,jy,k,l,li,nrefine,iix,jjy,n,nxn2,nyn2 |
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| 67 | integer,parameter :: lumaxx=1200,lumaxy=600 |
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| 68 | real,parameter :: xlon0lu=-180.,ylat0lu=-90. |
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| 69 | real,parameter :: dxlu=0.3 |
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| 70 | real :: xlon,ylat,sumperc,p,xi,yj |
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| 71 | real :: xlandusep(lumaxx,lumaxy,numclass) |
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| 72 | ! real :: xlanduse(0:nxmax-1,0:nymax-1,numclass) |
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| 73 | ! real :: xlandusen(0:nxmaxn-1,0:nymaxn-1,numclass,maxnests) |
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| 74 | |
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| 75 | ! include 'includepar' |
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| 76 | ! include 'includecom' |
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| 77 | ! |
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| 78 | ! integer ix,jy,i,j,k,n,l |
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| 79 | ! real x,y,xlon,ylat |
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| 80 | |
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| 81 | do ix=1,lumaxx |
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| 82 | do jy=1,lumaxy |
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| 83 | do k=1,numclass |
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| 84 | xlandusep(ix,jy,k)=0. |
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| 85 | end do |
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| 86 | sumperc=0. |
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| 87 | do li=1,3 |
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| 88 | sumperc=sumperc+landinvent(ix,jy,li+3) |
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| 89 | end do |
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| 90 | do li=1,3 |
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| 91 | k=landinvent(ix,jy,li) |
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| 92 | if (sumperc.gt.0) then |
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| 93 | p=landinvent(ix,jy,li+3)/sumperc |
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| 94 | else |
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| 95 | p=0 |
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| 96 | endif |
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| 97 | ! p has values between 0 and 1 |
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| 98 | xlandusep(ix,jy,k)=p |
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| 99 | end do |
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| 100 | end do |
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| 101 | end do |
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| 102 | |
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| 103 | nrefine=10 |
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| 104 | |
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| 105 | do ix=0,nxmin1 |
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| 106 | ! xlon=real(ix)*dx+xlon0 ! long. |
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| 107 | do jy=0,nymin1 |
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| 108 | ! ylat=real(jy)*dy+ylat0 ! and lat. of each gridpoint |
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| 109 | ! FLEXPART_WRF - use this routine to get lat,lon |
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| 110 | do k=1,numclass |
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| 111 | sumperc=0. |
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| 112 | xlanduse(ix,jy,k)=0. |
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| 113 | enddo |
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| 114 | |
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| 115 | ! do iix=1, nrefine |
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| 116 | ! do jjy=1, nrefine |
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| 117 | do iix=1, 1 |
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| 118 | do jjy=1, 1 |
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| 119 | |
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| 120 | ! xlon=(ix+(iix-1)/real(nrefine))*dx+xlon0 ! longitude, should be between -180 and 179 |
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| 121 | ! ylat=(jy+(jjy-1)/real(nrefine))*dy+ylat0 ! and lat. of each gridpoint |
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| 122 | |
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| 123 | call xyindex_to_ll_wrf( 0, real(ix), real(jy), xlon, ylat ) |
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| 124 | |
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| 125 | if (xlon.ge.(xlon0lu+lumaxx*dxlu)) then |
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| 126 | xlon=xlon-lumaxx*dxlu |
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| 127 | endif |
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| 128 | xi=int((xlon-xlon0lu)/dxlu)+1 |
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| 129 | yj=int((ylat-ylat0lu)/dxlu)+1 |
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| 130 | if (xi.gt.lumaxx) xi=xi-lumaxx |
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| 131 | if (yj.gt.lumaxy) yj=yj-lumaxy |
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| 132 | if (xi.lt.0) then |
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| 133 | write (*,*) 'problem with landuseinv sampling: ', & |
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| 134 | xlon,xlon0lu,ix,iix,xlon0,dx,nxmax |
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| 135 | stop |
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| 136 | endif |
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| 137 | do k=1,numclass |
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| 138 | xlanduse(ix,jy,k)= & |
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| 139 | xlanduse(ix,jy,k)+xlandusep(int(xi),int(yj),k) |
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| 140 | sumperc=sumperc+xlanduse(ix,jy,k) ! just for the check if landuseinv. is available |
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| 141 | end do |
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| 142 | end do |
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| 143 | end do |
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| 144 | if (sumperc.gt.0) then ! detailed landuse available |
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| 145 | sumperc=0. |
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| 146 | do k=1,numclass |
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| 147 | xlanduse(ix,jy,k)= & |
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| 148 | xlanduse(ix,jy,k)/real(nrefine*nrefine) |
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| 149 | sumperc=sumperc+xlanduse(ix,jy,k) |
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| 150 | end do |
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| 151 | !cc the sum of all categories should be 1 ... 100 percent ... in order to get vdep right! |
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| 152 | if (sumperc.lt.1-1E-5) then |
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| 153 | do k=1,numclass |
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| 154 | xlanduse(ix,jy,k)= & |
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| 155 | xlanduse(ix,jy,k)/sumperc |
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| 156 | end do |
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| 157 | endif |
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| 158 | else |
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| 159 | if (lsm(ix,jy).lt.0.1) then ! over sea -> ocean |
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| 160 | xlanduse(ix,jy,3)=1. |
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| 161 | else ! over land -> rangeland |
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| 162 | xlanduse(ix,jy,7)=1. |
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| 163 | endif |
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| 164 | endif |
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| 165 | |
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| 166 | |
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| 167 | end do |
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| 168 | end do |
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| 169 | |
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| 170 | |
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| 171 | ! open(4,file='landusetest',form='formatted') |
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| 172 | ! do 56 k=1,13 |
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| 173 | ! do 55 ix=0,nxmin1 |
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| 174 | ! 55 write (4,*) (xlanduse(ix,jy,k),jy=0,nymin1) |
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| 175 | ! 56 continue |
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| 176 | ! close(4) |
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| 177 | ! write (*,*) 'landuse written' |
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| 178 | ! stop |
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| 179 | ! open(4,file='landseatest'//ck,form='formatted') |
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| 180 | ! do 57 ix=0,nxmin1 |
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| 181 | ! 57 write (4,*) (lsm(ix,jy),jy=0,nymin1) |
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| 182 | ! write (*,*) 'landseamask written' |
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| 183 | |
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| 184 | |
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| 185 | do l=1,numbnests |
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| 186 | do jy=0,nyn(l)-1 |
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| 187 | do ix=0,nxn(l)-1 |
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| 188 | |
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| 189 | do k=1,numclass |
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| 190 | xlandusen(ix,jy,k,l)=0.0 |
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| 191 | sumperc=0. |
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| 192 | enddo |
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| 193 | |
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| 194 | do iix=1, 1 |
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| 195 | do jjy=1, 1 |
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| 196 | |
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| 197 | ! xlon=(ix+(iix-1)/real(nrefine))*dx+xlon0 ! longitude, should be between -180 and 179 |
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| 198 | ! ylat=(jy+(jjy-1)/real(nrefine))*dy+ylat0 ! and lat. of each gridpoint |
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| 199 | |
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| 200 | call xyindex_to_ll_wrf( l, real(ix), real(jy), xlon, ylat ) |
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| 201 | |
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| 202 | xi=int((xlon-xlon0lu)/dxlu)+1 |
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| 203 | yj=int((ylat-ylat0lu)/dxlu)+1 |
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| 204 | if (xi.gt.lumaxx) xi=xi-lumaxx |
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| 205 | if (yj.gt.lumaxy) yj=yj-lumaxy |
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| 206 | do k=1,numclass |
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| 207 | xlandusen(ix,jy,k,l)=xlandusen(ix,jy,k,l)+ & |
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| 208 | xlandusep(int(xi),int(yj),k) |
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| 209 | sumperc=sumperc+xlandusen(ix,jy,k,l) |
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| 210 | end do |
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| 211 | end do |
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| 212 | end do |
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| 213 | if (sumperc.gt.0) then ! detailed landuse available |
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| 214 | sumperc=0. |
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| 215 | do k=1,numclass |
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| 216 | xlandusen(ix,jy,k,l)= & |
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| 217 | xlandusen(ix,jy,k,l)/real(nrefine*nrefine) |
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| 218 | sumperc=sumperc+xlandusen(ix,jy,k,l) |
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| 219 | end do |
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| 220 | !cc the sum of all categories should be 1 ... 100 percent ... in order to get vdep right! |
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| 221 | if (sumperc.lt.1-1E-5) then |
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| 222 | do k=1,numclass |
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| 223 | xlandusen(ix,jy,k,l)=xlandusen(ix,jy,k,l)/sumperc |
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| 224 | end do |
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| 225 | endif |
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| 226 | else ! check land/sea mask |
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| 227 | if (lsmn(ix,jy,l).lt.0.1) then ! over sea -> ocean |
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| 228 | xlandusen(ix,jy,3,l)=1. |
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| 229 | else ! over land -> grasslands |
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| 230 | xlandusen(ix,jy,7,l)=1. |
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| 231 | endif |
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| 232 | endif |
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| 233 | end do |
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| 234 | end do |
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| 235 | end do |
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| 236 | |
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| 237 | |
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| 238 | end subroutine assignland |
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