[8] | 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 verttransform_nests(n,uuhn,vvhn,wwhn,pvhn) |
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| 23 | ! i i i i i |
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| 24 | !***************************************************************************** |
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| 25 | ! * |
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| 26 | ! This subroutine transforms temperature, dew point temperature and * |
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| 27 | ! wind components from eta to meter coordinates. * |
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| 28 | ! The vertical wind component is transformed from Pa/s to m/s using * |
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| 29 | ! the conversion factor pinmconv. * |
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| 30 | ! In addition, this routine calculates vertical density gradients * |
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| 31 | ! needed for the parameterization of the turbulent velocities. * |
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| 32 | ! It is similar to verttransform, but makes the transformations for * |
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| 33 | ! the nested grids. * |
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| 34 | ! * |
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| 35 | ! Author: A. Stohl, G. Wotawa * |
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| 36 | ! * |
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| 37 | ! 12 August 1996 * |
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| 38 | ! Update: 16 January 1998 * |
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| 39 | ! * |
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| 40 | ! Major update: 17 February 1999 * |
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| 41 | ! by G. Wotawa * |
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| 42 | ! * |
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| 43 | ! - Vertical levels for u, v and w are put together * |
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| 44 | ! - Slope correction for vertical velocity: Modification of calculation * |
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| 45 | ! procedure * |
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| 46 | ! * |
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| 47 | !***************************************************************************** |
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| 48 | ! Changes, Bernd C. Krueger, Feb. 2001: (marked "C-cv") |
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| 49 | ! Variables tthn and qvhn (on eta coordinates) from common block |
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| 50 | !***************************************************************************** |
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| 51 | ! Sabine Eckhardt, March 2007 |
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| 52 | ! add the variable cloud for use with scavenging - descr. in com_mod |
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| 53 | !***************************************************************************** |
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| 54 | ! * |
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| 55 | ! Variables: * |
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| 56 | ! nxn,nyn,nuvz,nwz field dimensions in x,y and z direction * |
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| 57 | ! uun wind components in x-direction [m/s] * |
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| 58 | ! vvn wind components in y-direction [m/s] * |
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| 59 | ! wwn wind components in z-direction [deltaeta/s]* |
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| 60 | ! ttn temperature [K] * |
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| 61 | ! pvn potential vorticity (pvu) * |
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| 62 | ! psn surface pressure [Pa] * |
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| 63 | ! * |
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| 64 | !***************************************************************************** |
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| 65 | |
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| 66 | use par_mod |
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| 67 | use com_mod |
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| 68 | |
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| 69 | implicit none |
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| 70 | |
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| 71 | integer :: ix,jy,kz,iz,n,l,kmin,kl,klp,ix1,jy1,ixp,jyp |
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| 72 | integer :: rain_cloud_above,kz_inv |
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| 73 | real :: f_qvsat,pressure,rh,lsp,convp |
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| 74 | real :: uvzlev(nuvzmax),wzlev(nwzmax),rhoh(nuvzmax),pinmconv(nzmax) |
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| 75 | real :: uvwzlev(0:nxmaxn-1,0:nymaxn-1,nzmax) |
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| 76 | real :: ew,pint,tv,tvold,pold,dz1,dz2,dz,ui,vi |
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| 77 | real :: dzdx,dzdy |
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| 78 | real :: dzdx1,dzdx2,dzdy1,dzdy2 |
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| 79 | real :: uuhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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| 80 | real :: vvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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| 81 | real :: pvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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| 82 | real :: wwhn(0:nxmaxn-1,0:nymaxn-1,nwzmax,maxnests) |
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| 83 | real,parameter :: const=r_air/ga |
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| 84 | |
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| 85 | |
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| 86 | ! Loop over all nests |
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| 87 | !******************** |
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| 88 | |
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| 89 | do l=1,numbnests |
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| 90 | |
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| 91 | ! Loop over the whole grid |
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| 92 | !************************* |
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| 93 | |
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| 94 | do jy=0,nyn(l)-1 |
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| 95 | do ix=0,nxn(l)-1 |
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| 96 | |
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| 97 | tvold=tt2n(ix,jy,1,n,l)*(1.+0.378*ew(td2n(ix,jy,1,n,l))/ & |
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| 98 | psn(ix,jy,1,n,l)) |
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| 99 | pold=psn(ix,jy,1,n,l) |
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| 100 | uvzlev(1)=0. |
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| 101 | wzlev(1)=0. |
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| 102 | rhoh(1)=pold/(r_air*tvold) |
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| 103 | |
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| 104 | |
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| 105 | ! Compute heights of eta levels |
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| 106 | !****************************** |
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| 107 | |
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| 108 | do kz=2,nuvz |
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| 109 | pint=akz(kz)+bkz(kz)*psn(ix,jy,1,n,l) |
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| 110 | tv=tthn(ix,jy,kz,n,l)*(1.+0.608*qvhn(ix,jy,kz,n,l)) |
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| 111 | rhoh(kz)=pint/(r_air*tv) |
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| 112 | |
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| 113 | if (abs(tv-tvold).gt.0.2) then |
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| 114 | uvzlev(kz)=uvzlev(kz-1)+const*log(pold/pint)* & |
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| 115 | (tv-tvold)/log(tv/tvold) |
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| 116 | else |
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| 117 | uvzlev(kz)=uvzlev(kz-1)+const*log(pold/pint)*tv |
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| 118 | endif |
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| 119 | |
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| 120 | tvold=tv |
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| 121 | pold=pint |
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| 122 | end do |
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| 123 | |
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| 124 | |
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| 125 | do kz=2,nwz-1 |
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| 126 | wzlev(kz)=(uvzlev(kz+1)+uvzlev(kz))/2. |
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| 127 | end do |
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| 128 | wzlev(nwz)=wzlev(nwz-1)+ & |
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| 129 | uvzlev(nuvz)-uvzlev(nuvz-1) |
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| 130 | |
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| 131 | ! NOTE: In FLEXPART versions up to 4.0, the number of model levels was doubled |
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| 132 | ! upon the transformation to z levels. In order to save computer memory, this is |
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| 133 | ! not done anymore in the standard version. However, this option can still be |
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| 134 | ! switched on by replacing the following lines with those below, that are |
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| 135 | ! currently commented out. |
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| 136 | ! Note that one change is also necessary in gridcheck.f, |
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| 137 | ! and three changes in verttransform.f |
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| 138 | !***************************************************************************** |
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| 139 | uvwzlev(ix,jy,1)=0.0 |
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| 140 | do kz=2,nuvz |
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| 141 | uvwzlev(ix,jy,kz)=uvzlev(kz) |
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| 142 | end do |
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| 143 | |
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| 144 | ! Switch on following lines to use doubled vertical resolution |
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| 145 | ! Switch off the three lines above. |
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| 146 | !************************************************************* |
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| 147 | !22 uvwzlev(ix,jy,(kz-1)*2)=uvzlev(kz) |
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| 148 | ! do 23 kz=2,nwz |
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| 149 | !23 uvwzlev(ix,jy,(kz-1)*2+1)=wzlev(kz) |
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| 150 | ! End doubled vertical resolution |
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| 151 | |
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| 152 | ! pinmconv=(h2-h1)/(p2-p1) |
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| 153 | |
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| 154 | pinmconv(1)=(uvwzlev(ix,jy,2)-uvwzlev(ix,jy,1))/ & |
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| 155 | ((aknew(2)+bknew(2)*psn(ix,jy,1,n,l))- & |
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| 156 | (aknew(1)+bknew(1)*psn(ix,jy,1,n,l))) |
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| 157 | do kz=2,nz-1 |
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| 158 | pinmconv(kz)=(uvwzlev(ix,jy,kz+1)-uvwzlev(ix,jy,kz-1))/ & |
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| 159 | ((aknew(kz+1)+bknew(kz+1)*psn(ix,jy,1,n,l))- & |
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| 160 | (aknew(kz-1)+bknew(kz-1)*psn(ix,jy,1,n,l))) |
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| 161 | end do |
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| 162 | pinmconv(nz)=(uvwzlev(ix,jy,nz)-uvwzlev(ix,jy,nz-1))/ & |
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| 163 | ((aknew(nz)+bknew(nz)*psn(ix,jy,1,n,l))- & |
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| 164 | (aknew(nz-1)+bknew(nz-1)*psn(ix,jy,1,n,l))) |
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| 165 | |
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| 166 | |
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| 167 | ! Levels, where u,v,t and q are given |
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| 168 | !************************************ |
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| 169 | |
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| 170 | uun(ix,jy,1,n,l)=uuhn(ix,jy,1,l) |
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| 171 | vvn(ix,jy,1,n,l)=vvhn(ix,jy,1,l) |
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| 172 | ttn(ix,jy,1,n,l)=tthn(ix,jy,1,n,l) |
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| 173 | qvn(ix,jy,1,n,l)=qvhn(ix,jy,1,n,l) |
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| 174 | pvn(ix,jy,1,n,l)=pvhn(ix,jy,1,l) |
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| 175 | rhon(ix,jy,1,n,l)=rhoh(1) |
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| 176 | uun(ix,jy,nz,n,l)=uuhn(ix,jy,nuvz,l) |
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| 177 | vvn(ix,jy,nz,n,l)=vvhn(ix,jy,nuvz,l) |
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| 178 | ttn(ix,jy,nz,n,l)=tthn(ix,jy,nuvz,n,l) |
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| 179 | qvn(ix,jy,nz,n,l)=qvhn(ix,jy,nuvz,n,l) |
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| 180 | pvn(ix,jy,nz,n,l)=pvhn(ix,jy,nuvz,l) |
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| 181 | rhon(ix,jy,nz,n,l)=rhoh(nuvz) |
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| 182 | kmin=2 |
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| 183 | do iz=2,nz-1 |
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| 184 | do kz=kmin,nuvz |
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| 185 | if(height(iz).gt.uvzlev(nuvz)) then |
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| 186 | uun(ix,jy,iz,n,l)=uun(ix,jy,nz,n,l) |
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| 187 | vvn(ix,jy,iz,n,l)=vvn(ix,jy,nz,n,l) |
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| 188 | ttn(ix,jy,iz,n,l)=ttn(ix,jy,nz,n,l) |
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| 189 | qvn(ix,jy,iz,n,l)=qvn(ix,jy,nz,n,l) |
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| 190 | pvn(ix,jy,iz,n,l)=pvn(ix,jy,nz,n,l) |
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| 191 | rhon(ix,jy,iz,n,l)=rhon(ix,jy,nz,n,l) |
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| 192 | goto 30 |
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| 193 | endif |
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| 194 | if ((height(iz).gt.uvzlev(kz-1)).and. & |
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| 195 | (height(iz).le.uvzlev(kz))) then |
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| 196 | dz1=height(iz)-uvzlev(kz-1) |
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| 197 | dz2=uvzlev(kz)-height(iz) |
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| 198 | dz=dz1+dz2 |
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| 199 | uun(ix,jy,iz,n,l)=(uuhn(ix,jy,kz-1,l)*dz2+ & |
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| 200 | uuhn(ix,jy,kz,l)*dz1)/dz |
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| 201 | vvn(ix,jy,iz,n,l)=(vvhn(ix,jy,kz-1,l)*dz2+ & |
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| 202 | vvhn(ix,jy,kz,l)*dz1)/dz |
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| 203 | ttn(ix,jy,iz,n,l)=(tthn(ix,jy,kz-1,n,l)*dz2+ & |
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| 204 | tthn(ix,jy,kz,n,l)*dz1)/dz |
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| 205 | qvn(ix,jy,iz,n,l)=(qvhn(ix,jy,kz-1,n,l)*dz2+ & |
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| 206 | qvhn(ix,jy,kz,n,l)*dz1)/dz |
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| 207 | pvn(ix,jy,iz,n,l)=(pvhn(ix,jy,kz-1,l)*dz2+ & |
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| 208 | pvhn(ix,jy,kz,l)*dz1)/dz |
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| 209 | rhon(ix,jy,iz,n,l)=(rhoh(kz-1)*dz2+rhoh(kz)*dz1)/dz |
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| 210 | kmin=kz |
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| 211 | goto 30 |
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| 212 | endif |
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| 213 | end do |
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| 214 | 30 continue |
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| 215 | end do |
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| 216 | |
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| 217 | |
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| 218 | ! Levels, where w is given |
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| 219 | !************************* |
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| 220 | |
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| 221 | wwn(ix,jy,1,n,l)=wwhn(ix,jy,1,l)*pinmconv(1) |
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| 222 | wwn(ix,jy,nz,n,l)=wwhn(ix,jy,nwz,l)*pinmconv(nz) |
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| 223 | kmin=2 |
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| 224 | do iz=2,nz |
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| 225 | do kz=kmin,nwz |
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| 226 | if ((height(iz).gt.wzlev(kz-1)).and. & |
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| 227 | (height(iz).le.wzlev(kz))) then |
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| 228 | dz1=height(iz)-wzlev(kz-1) |
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| 229 | dz2=wzlev(kz)-height(iz) |
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| 230 | dz=dz1+dz2 |
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| 231 | wwn(ix,jy,iz,n,l)=(wwhn(ix,jy,kz-1,l)*pinmconv(kz-1)*dz2 & |
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| 232 | +wwhn(ix,jy,kz,l)*pinmconv(kz)*dz1)/dz |
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| 233 | kmin=kz |
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| 234 | goto 40 |
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| 235 | endif |
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| 236 | end do |
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| 237 | 40 continue |
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| 238 | end do |
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| 239 | |
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| 240 | ! Compute density gradients at intermediate levels |
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| 241 | !************************************************* |
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| 242 | |
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| 243 | drhodzn(ix,jy,1,n,l)=(rhon(ix,jy,2,n,l)-rhon(ix,jy,1,n,l))/ & |
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| 244 | (height(2)-height(1)) |
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| 245 | do kz=2,nz-1 |
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| 246 | drhodzn(ix,jy,kz,n,l)=(rhon(ix,jy,kz+1,n,l)- & |
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| 247 | rhon(ix,jy,kz-1,n,l))/(height(kz+1)-height(kz-1)) |
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| 248 | end do |
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| 249 | drhodzn(ix,jy,nz,n,l)=drhodzn(ix,jy,nz-1,n,l) |
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| 250 | |
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| 251 | end do |
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| 252 | end do |
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| 253 | |
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| 254 | |
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| 255 | !**************************************************************** |
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| 256 | ! Compute slope of eta levels in windward direction and resulting |
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| 257 | ! vertical wind correction |
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| 258 | !**************************************************************** |
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| 259 | |
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| 260 | do jy=1,nyn(l)-2 |
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| 261 | do ix=1,nxn(l)-2 |
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| 262 | |
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| 263 | kmin=2 |
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| 264 | do iz=2,nz-1 |
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| 265 | |
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| 266 | ui=uun(ix,jy,iz,n,l)*dxconst*xresoln(l)/ & |
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| 267 | cos((real(jy)*dyn(l)+ylat0n(l))*pi180) |
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| 268 | vi=vvn(ix,jy,iz,n,l)*dyconst*yresoln(l) |
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| 269 | |
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| 270 | do kz=kmin,nz |
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| 271 | if ((height(iz).gt.uvwzlev(ix,jy,kz-1)).and. & |
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| 272 | (height(iz).le.uvwzlev(ix,jy,kz))) then |
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| 273 | dz1=height(iz)-uvwzlev(ix,jy,kz-1) |
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| 274 | dz2=uvwzlev(ix,jy,kz)-height(iz) |
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| 275 | dz=dz1+dz2 |
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| 276 | kl=kz-1 |
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| 277 | klp=kz |
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| 278 | kmin=kz |
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| 279 | goto 47 |
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| 280 | endif |
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| 281 | end do |
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| 282 | |
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| 283 | 47 ix1=ix-1 |
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| 284 | jy1=jy-1 |
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| 285 | ixp=ix+1 |
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| 286 | jyp=jy+1 |
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| 287 | |
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| 288 | dzdx1=(uvwzlev(ixp,jy,kl)-uvwzlev(ix1,jy,kl))/2. |
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| 289 | dzdx2=(uvwzlev(ixp,jy,klp)-uvwzlev(ix1,jy,klp))/2. |
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| 290 | dzdx=(dzdx1*dz2+dzdx2*dz1)/dz |
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| 291 | |
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| 292 | dzdy1=(uvwzlev(ix,jyp,kl)-uvwzlev(ix,jy1,kl))/2. |
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| 293 | dzdy2=(uvwzlev(ix,jyp,klp)-uvwzlev(ix,jy1,klp))/2. |
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| 294 | dzdy=(dzdy1*dz2+dzdy2*dz1)/dz |
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| 295 | |
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| 296 | wwn(ix,jy,iz,n,l)=wwn(ix,jy,iz,n,l)+(dzdx*ui+dzdy*vi) |
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| 297 | |
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| 298 | end do |
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| 299 | |
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| 300 | end do |
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| 301 | end do |
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| 302 | |
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| 303 | |
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| 304 | !write (*,*) 'initializing nested cloudsn, n:',n |
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| 305 | ! create a cloud and rainout/washout field, cloudsn occur where rh>80% |
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| 306 | do jy=0,nyn(l)-1 |
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| 307 | do ix=0,nxn(l)-1 |
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| 308 | rain_cloud_above=0 |
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| 309 | lsp=lsprecn(ix,jy,1,n,l) |
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| 310 | convp=convprecn(ix,jy,1,n,l) |
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| 311 | cloudsnh(ix,jy,n,l)=0 |
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| 312 | do kz_inv=1,nz-1 |
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| 313 | kz=nz-kz_inv+1 |
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| 314 | pressure=rhon(ix,jy,kz,n,l)*r_air*ttn(ix,jy,kz,n,l) |
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| 315 | rh=qvn(ix,jy,kz,n,l)/f_qvsat(pressure,ttn(ix,jy,kz,n,l)) |
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| 316 | cloudsn(ix,jy,kz,n,l)=0 |
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| 317 | if (rh.gt.0.8) then ! in cloud |
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| 318 | if ((lsp.gt.0.01).or.(convp.gt.0.01)) then |
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| 319 | rain_cloud_above=1 |
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| 320 | cloudsnh(ix,jy,n,l)=cloudsnh(ix,jy,n,l)+ & |
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| 321 | int(height(kz)-height(kz-1)) |
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| 322 | if (lsp.ge.convp) then |
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| 323 | cloudsn(ix,jy,kz,n,l)=3 ! lsp dominated rainout |
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| 324 | else |
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| 325 | cloudsn(ix,jy,kz,n,l)=2 ! convp dominated rainout |
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| 326 | endif |
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| 327 | else ! no precipitation |
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| 328 | cloudsn(ix,jy,kz,n,l)=1 ! cloud |
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| 329 | endif |
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| 330 | else ! no cloud |
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| 331 | if (rain_cloud_above.eq.1) then ! scavenging |
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| 332 | if (lsp.ge.convp) then |
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| 333 | cloudsn(ix,jy,kz,n,l)=5 ! lsp dominated washout |
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| 334 | else |
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| 335 | cloudsn(ix,jy,kz,n,l)=4 ! convp dominated washout |
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| 336 | endif |
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| 337 | endif |
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| 338 | endif |
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| 339 | end do |
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| 340 | end do |
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| 341 | end do |
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| 342 | |
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| 343 | end do |
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| 344 | |
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| 345 | end subroutine verttransform_nests |
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