[4] | 1 | !********************************************************************** |
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[37] | 2 | ! Copyright 1998-2015 * |
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[4] | 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(n,uuh,vvh,wwh,pvh) |
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[24] | 23 | ! i i i i i |
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[4] | 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 | ! * |
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| 33 | ! Author: A. Stohl, G. Wotawa * |
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| 34 | ! * |
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| 35 | ! 12 August 1996 * |
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| 36 | ! Update: 16 January 1998 * |
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| 37 | ! * |
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| 38 | ! Major update: 17 February 1999 * |
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| 39 | ! by G. Wotawa * |
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| 40 | ! * |
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| 41 | ! - Vertical levels for u, v and w are put together * |
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| 42 | ! - Slope correction for vertical velocity: Modification of calculation * |
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| 43 | ! procedure * |
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| 44 | ! * |
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| 45 | !***************************************************************************** |
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| 46 | ! Changes, Bernd C. Krueger, Feb. 2001: |
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| 47 | ! Variables tth and qvh (on eta coordinates) from common block |
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| 48 | !***************************************************************************** |
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| 49 | ! Sabine Eckhardt, March 2007 |
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| 50 | ! added the variable cloud for use with scavenging - descr. in com_mod |
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| 51 | !***************************************************************************** |
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[37] | 52 | ! Petra Seibert, Feb 2015: Add quick fix from 2013 |
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| 53 | !***************************************************************************** |
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[4] | 54 | ! * |
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| 55 | ! Variables: * |
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| 56 | ! nx,ny,nz field dimensions in x,y and z direction * |
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| 57 | ! uu(0:nxmax,0:nymax,nzmax,2) wind components in x-direction [m/s] * |
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| 58 | ! vv(0:nxmax,0:nymax,nzmax,2) wind components in y-direction [m/s] * |
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| 59 | ! ww(0:nxmax,0:nymax,nzmax,2) wind components in z-direction [deltaeta/s]* |
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| 60 | ! tt(0:nxmax,0:nymax,nzmax,2) temperature [K] * |
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| 61 | ! pv(0:nxmax,0:nymax,nzmax,2) potential voriticity (pvu) * |
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| 62 | ! ps(0:nxmax,0:nymax,2) 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 | use cmapf_mod, only: cc2gll |
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| 69 | |
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| 70 | implicit none |
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| 71 | |
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[37] | 72 | integer :: ix,jy,kz,iz,n,kmin,kl,klp,ix1,jy1,ixp,jyp,ixm,jym,kz_inv |
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| 73 | integer :: icloudtop |
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[4] | 74 | real :: f_qvsat,pressure |
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[37] | 75 | real :: rh,lsp,convp,prec,rhmin |
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[24] | 76 | real :: rhoh(nuvzmax),pinmconv(nzmax) |
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[4] | 77 | real :: ew,pint,tv,tvold,pold,dz1,dz2,dz,ui,vi |
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| 78 | real :: xlon,ylat,xlonr,dzdx,dzdy |
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[24] | 79 | real :: dzdx1,dzdx2,dzdy1,dzdy2,cosf |
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[4] | 80 | real :: uuaux,vvaux,uupolaux,vvpolaux,ddpol,ffpol,wdummy |
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| 81 | real :: uuh(0:nxmax-1,0:nymax-1,nuvzmax) |
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| 82 | real :: vvh(0:nxmax-1,0:nymax-1,nuvzmax) |
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| 83 | real :: pvh(0:nxmax-1,0:nymax-1,nuvzmax) |
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| 84 | real :: wwh(0:nxmax-1,0:nymax-1,nwzmax) |
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| 85 | real :: wzlev(nwzmax),uvwzlev(0:nxmax-1,0:nymax-1,nzmax) |
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| 86 | real,parameter :: const=r_air/ga |
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| 87 | |
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[37] | 88 | logical :: init = .true., lconvectprec, lsearch |
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[4] | 89 | |
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| 90 | |
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| 91 | !************************************************************************* |
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| 92 | ! If verttransform is called the first time, initialize heights of the * |
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| 93 | ! z levels in meter. The heights are the heights of model levels, where * |
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[24] | 94 | ! u,v,T and qv are given. * |
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[4] | 95 | !************************************************************************* |
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| 96 | |
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| 97 | if (init) then |
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| 98 | |
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| 99 | ! Search for a point with high surface pressure (i.e. not above significant topography) |
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| 100 | ! Then, use this point to construct a reference z profile, to be used at all times |
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[24] | 101 | !************************************************************************************** |
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[4] | 102 | |
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| 103 | do jy=0,nymin1 |
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| 104 | do ix=0,nxmin1 |
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| 105 | if (ps(ix,jy,1,n).gt.100000.) then |
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| 106 | ixm=ix |
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| 107 | jym=jy |
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| 108 | goto 3 |
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| 109 | endif |
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| 110 | end do |
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| 111 | end do |
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| 112 | 3 continue |
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| 113 | |
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| 114 | |
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| 115 | tvold=tt2(ixm,jym,1,n)*(1.+0.378*ew(td2(ixm,jym,1,n))/ & |
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[24] | 116 | ps(ixm,jym,1,n)) |
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[4] | 117 | pold=ps(ixm,jym,1,n) |
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| 118 | height(1)=0. |
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| 119 | |
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| 120 | do kz=2,nuvz |
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| 121 | pint=akz(kz)+bkz(kz)*ps(ixm,jym,1,n) |
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| 122 | tv=tth(ixm,jym,kz,n)*(1.+0.608*qvh(ixm,jym,kz,n)) |
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| 123 | |
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| 124 | if (abs(tv-tvold).gt.0.2) then |
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[24] | 125 | height(kz)=height(kz-1)+const*log(pold/pint)* & |
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| 126 | (tv-tvold)/log(tv/tvold) |
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[4] | 127 | else |
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[24] | 128 | height(kz)=height(kz-1)+const*log(pold/pint)*tv |
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[4] | 129 | endif |
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| 130 | |
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| 131 | tvold=tv |
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| 132 | pold=pint |
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| 133 | end do |
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| 134 | |
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| 135 | |
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| 136 | ! Determine highest levels that can be within PBL |
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| 137 | !************************************************ |
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| 138 | |
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| 139 | do kz=1,nz |
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| 140 | if (height(kz).gt.hmixmax) then |
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| 141 | nmixz=kz |
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| 142 | goto 9 |
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| 143 | endif |
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| 144 | end do |
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| 145 | 9 continue |
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| 146 | |
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| 147 | ! Do not repeat initialization of the Cartesian z grid |
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| 148 | !***************************************************** |
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| 149 | |
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| 150 | init=.false. |
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| 151 | |
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| 152 | endif |
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| 153 | |
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| 154 | |
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| 155 | ! Loop over the whole grid |
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| 156 | !************************* |
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| 157 | |
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| 158 | do jy=0,nymin1 |
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| 159 | do ix=0,nxmin1 |
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[24] | 160 | tvold=tt2(ix,jy,1,n)*(1.+0.378*ew(td2(ix,jy,1,n))/ps(ix,jy,1,n)) |
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[4] | 161 | pold=ps(ix,jy,1,n) |
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[24] | 162 | uvwzlev(ix,jy,1)=0. |
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[4] | 163 | wzlev(1)=0. |
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| 164 | rhoh(1)=pold/(r_air*tvold) |
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| 165 | |
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| 166 | |
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| 167 | ! Compute heights of eta levels |
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| 168 | !****************************** |
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| 169 | |
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| 170 | do kz=2,nuvz |
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| 171 | pint=akz(kz)+bkz(kz)*ps(ix,jy,1,n) |
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| 172 | tv=tth(ix,jy,kz,n)*(1.+0.608*qvh(ix,jy,kz,n)) |
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| 173 | rhoh(kz)=pint/(r_air*tv) |
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| 174 | |
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| 175 | if (abs(tv-tvold).gt.0.2) then |
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[24] | 176 | uvwzlev(ix,jy,kz)=uvwzlev(ix,jy,kz-1)+const*log(pold/pint)* & |
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| 177 | (tv-tvold)/log(tv/tvold) |
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[4] | 178 | else |
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[24] | 179 | uvwzlev(ix,jy,kz)=uvwzlev(ix,jy,kz-1)+const*log(pold/pint)*tv |
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[4] | 180 | endif |
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| 181 | |
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| 182 | tvold=tv |
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| 183 | pold=pint |
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| 184 | end do |
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| 185 | |
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| 186 | |
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| 187 | do kz=2,nwz-1 |
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[24] | 188 | wzlev(kz)=(uvwzlev(ix,jy,kz+1)+uvwzlev(ix,jy,kz))/2. |
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[4] | 189 | end do |
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[24] | 190 | wzlev(nwz)=wzlev(nwz-1)+uvwzlev(ix,jy,nuvz)-uvwzlev(ix,jy,nuvz-1) |
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[4] | 191 | |
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| 192 | ! pinmconv=(h2-h1)/(p2-p1) |
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| 193 | |
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| 194 | pinmconv(1)=(uvwzlev(ix,jy,2)-uvwzlev(ix,jy,1))/ & |
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[24] | 195 | ((aknew(2)+bknew(2)*ps(ix,jy,1,n))- & |
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| 196 | (aknew(1)+bknew(1)*ps(ix,jy,1,n))) |
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[4] | 197 | do kz=2,nz-1 |
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| 198 | pinmconv(kz)=(uvwzlev(ix,jy,kz+1)-uvwzlev(ix,jy,kz-1))/ & |
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[24] | 199 | ((aknew(kz+1)+bknew(kz+1)*ps(ix,jy,1,n))- & |
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| 200 | (aknew(kz-1)+bknew(kz-1)*ps(ix,jy,1,n))) |
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[4] | 201 | end do |
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| 202 | pinmconv(nz)=(uvwzlev(ix,jy,nz)-uvwzlev(ix,jy,nz-1))/ & |
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[24] | 203 | ((aknew(nz)+bknew(nz)*ps(ix,jy,1,n))- & |
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| 204 | (aknew(nz-1)+bknew(nz-1)*ps(ix,jy,1,n))) |
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[4] | 205 | |
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| 206 | ! Levels, where u,v,t and q are given |
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| 207 | !************************************ |
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| 208 | |
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| 209 | uu(ix,jy,1,n)=uuh(ix,jy,1) |
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| 210 | vv(ix,jy,1,n)=vvh(ix,jy,1) |
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| 211 | tt(ix,jy,1,n)=tth(ix,jy,1,n) |
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| 212 | qv(ix,jy,1,n)=qvh(ix,jy,1,n) |
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| 213 | pv(ix,jy,1,n)=pvh(ix,jy,1) |
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| 214 | rho(ix,jy,1,n)=rhoh(1) |
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| 215 | uu(ix,jy,nz,n)=uuh(ix,jy,nuvz) |
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| 216 | vv(ix,jy,nz,n)=vvh(ix,jy,nuvz) |
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| 217 | tt(ix,jy,nz,n)=tth(ix,jy,nuvz,n) |
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| 218 | qv(ix,jy,nz,n)=qvh(ix,jy,nuvz,n) |
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| 219 | pv(ix,jy,nz,n)=pvh(ix,jy,nuvz) |
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| 220 | rho(ix,jy,nz,n)=rhoh(nuvz) |
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| 221 | kmin=2 |
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| 222 | do iz=2,nz-1 |
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| 223 | do kz=kmin,nuvz |
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[24] | 224 | if(height(iz).gt.uvwzlev(ix,jy,nuvz)) then |
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[4] | 225 | uu(ix,jy,iz,n)=uu(ix,jy,nz,n) |
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| 226 | vv(ix,jy,iz,n)=vv(ix,jy,nz,n) |
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| 227 | tt(ix,jy,iz,n)=tt(ix,jy,nz,n) |
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| 228 | qv(ix,jy,iz,n)=qv(ix,jy,nz,n) |
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| 229 | pv(ix,jy,iz,n)=pv(ix,jy,nz,n) |
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| 230 | rho(ix,jy,iz,n)=rho(ix,jy,nz,n) |
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| 231 | goto 30 |
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| 232 | endif |
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[24] | 233 | if ((height(iz).gt.uvwzlev(ix,jy,kz-1)).and. & |
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| 234 | (height(iz).le.uvwzlev(ix,jy,kz))) then |
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| 235 | dz1=height(iz)-uvwzlev(ix,jy,kz-1) |
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| 236 | dz2=uvwzlev(ix,jy,kz)-height(iz) |
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[4] | 237 | dz=dz1+dz2 |
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| 238 | uu(ix,jy,iz,n)=(uuh(ix,jy,kz-1)*dz2+uuh(ix,jy,kz)*dz1)/dz |
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| 239 | vv(ix,jy,iz,n)=(vvh(ix,jy,kz-1)*dz2+vvh(ix,jy,kz)*dz1)/dz |
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| 240 | tt(ix,jy,iz,n)=(tth(ix,jy,kz-1,n)*dz2 & |
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| 241 | +tth(ix,jy,kz,n)*dz1)/dz |
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| 242 | qv(ix,jy,iz,n)=(qvh(ix,jy,kz-1,n)*dz2 & |
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| 243 | +qvh(ix,jy,kz,n)*dz1)/dz |
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| 244 | pv(ix,jy,iz,n)=(pvh(ix,jy,kz-1)*dz2+pvh(ix,jy,kz)*dz1)/dz |
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| 245 | rho(ix,jy,iz,n)=(rhoh(kz-1)*dz2+rhoh(kz)*dz1)/dz |
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| 246 | kmin=kz |
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| 247 | goto 30 |
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| 248 | endif |
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| 249 | end do |
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| 250 | 30 continue |
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| 251 | end do |
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| 252 | |
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| 253 | |
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| 254 | ! Levels, where w is given |
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| 255 | !************************* |
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| 256 | |
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| 257 | ww(ix,jy,1,n)=wwh(ix,jy,1)*pinmconv(1) |
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| 258 | ww(ix,jy,nz,n)=wwh(ix,jy,nwz)*pinmconv(nz) |
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| 259 | kmin=2 |
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| 260 | do iz=2,nz |
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| 261 | do kz=kmin,nwz |
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| 262 | if ((height(iz).gt.wzlev(kz-1)).and. & |
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| 263 | (height(iz).le.wzlev(kz))) then |
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| 264 | dz1=height(iz)-wzlev(kz-1) |
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| 265 | dz2=wzlev(kz)-height(iz) |
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| 266 | dz=dz1+dz2 |
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| 267 | ww(ix,jy,iz,n)=(wwh(ix,jy,kz-1)*pinmconv(kz-1)*dz2 & |
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| 268 | +wwh(ix,jy,kz)*pinmconv(kz)*dz1)/dz |
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| 269 | kmin=kz |
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| 270 | goto 40 |
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| 271 | endif |
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| 272 | end do |
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| 273 | 40 continue |
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| 274 | end do |
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| 275 | |
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| 276 | ! Compute density gradients at intermediate levels |
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| 277 | !************************************************* |
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| 278 | |
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| 279 | drhodz(ix,jy,1,n)=(rho(ix,jy,2,n)-rho(ix,jy,1,n))/ & |
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[24] | 280 | (height(2)-height(1)) |
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[4] | 281 | do kz=2,nz-1 |
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| 282 | drhodz(ix,jy,kz,n)=(rho(ix,jy,kz+1,n)-rho(ix,jy,kz-1,n))/ & |
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[24] | 283 | (height(kz+1)-height(kz-1)) |
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[4] | 284 | end do |
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| 285 | drhodz(ix,jy,nz,n)=drhodz(ix,jy,nz-1,n) |
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| 286 | |
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| 287 | end do |
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| 288 | end do |
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| 289 | |
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| 290 | |
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| 291 | !**************************************************************** |
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| 292 | ! Compute slope of eta levels in windward direction and resulting |
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| 293 | ! vertical wind correction |
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| 294 | !**************************************************************** |
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| 295 | |
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| 296 | do jy=1,ny-2 |
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[24] | 297 | cosf=cos((real(jy)*dy+ylat0)*pi180) |
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[4] | 298 | do ix=1,nx-2 |
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| 299 | |
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| 300 | kmin=2 |
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| 301 | do iz=2,nz-1 |
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| 302 | |
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[24] | 303 | ui=uu(ix,jy,iz,n)*dxconst/cosf |
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[4] | 304 | vi=vv(ix,jy,iz,n)*dyconst |
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| 305 | |
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| 306 | do kz=kmin,nz |
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| 307 | if ((height(iz).gt.uvwzlev(ix,jy,kz-1)).and. & |
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[24] | 308 | (height(iz).le.uvwzlev(ix,jy,kz))) then |
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[4] | 309 | dz1=height(iz)-uvwzlev(ix,jy,kz-1) |
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| 310 | dz2=uvwzlev(ix,jy,kz)-height(iz) |
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| 311 | dz=dz1+dz2 |
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| 312 | kl=kz-1 |
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| 313 | klp=kz |
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| 314 | kmin=kz |
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| 315 | goto 47 |
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| 316 | endif |
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| 317 | end do |
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| 318 | |
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| 319 | 47 ix1=ix-1 |
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| 320 | jy1=jy-1 |
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| 321 | ixp=ix+1 |
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| 322 | jyp=jy+1 |
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| 323 | |
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| 324 | dzdx1=(uvwzlev(ixp,jy,kl)-uvwzlev(ix1,jy,kl))/2. |
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| 325 | dzdx2=(uvwzlev(ixp,jy,klp)-uvwzlev(ix1,jy,klp))/2. |
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| 326 | dzdx=(dzdx1*dz2+dzdx2*dz1)/dz |
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| 327 | |
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| 328 | dzdy1=(uvwzlev(ix,jyp,kl)-uvwzlev(ix,jy1,kl))/2. |
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| 329 | dzdy2=(uvwzlev(ix,jyp,klp)-uvwzlev(ix,jy1,klp))/2. |
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| 330 | dzdy=(dzdy1*dz2+dzdy2*dz1)/dz |
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| 331 | |
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| 332 | ww(ix,jy,iz,n)=ww(ix,jy,iz,n)+(dzdx*ui+dzdy*vi) |
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| 333 | |
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| 334 | end do |
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| 335 | |
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| 336 | end do |
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| 337 | end do |
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| 338 | |
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| 339 | |
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| 340 | ! If north pole is in the domain, calculate wind velocities in polar |
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| 341 | ! stereographic coordinates |
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| 342 | !******************************************************************* |
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| 343 | |
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| 344 | if (nglobal) then |
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| 345 | do jy=int(switchnorthg)-2,nymin1 |
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| 346 | ylat=ylat0+real(jy)*dy |
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| 347 | do ix=0,nxmin1 |
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| 348 | xlon=xlon0+real(ix)*dx |
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| 349 | do iz=1,nz |
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| 350 | call cc2gll(northpolemap,ylat,xlon,uu(ix,jy,iz,n), & |
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[24] | 351 | vv(ix,jy,iz,n),uupol(ix,jy,iz,n),vvpol(ix,jy,iz,n)) |
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[4] | 352 | end do |
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| 353 | end do |
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| 354 | end do |
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| 355 | |
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| 356 | |
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| 357 | do iz=1,nz |
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| 358 | |
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| 359 | ! CALCULATE FFPOL, DDPOL FOR CENTRAL GRID POINT |
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| 360 | ! |
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| 361 | ! AMSnauffer Nov 18 2004 Added check for case vv=0 |
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| 362 | ! |
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| 363 | xlon=xlon0+real(nx/2-1)*dx |
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| 364 | xlonr=xlon*pi/180. |
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[24] | 365 | ffpol=sqrt(uu(nx/2-1,nymin1,iz,n)**2+vv(nx/2-1,nymin1,iz,n)**2) |
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[4] | 366 | if (vv(nx/2-1,nymin1,iz,n).lt.0.) then |
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[24] | 367 | ddpol=atan(uu(nx/2-1,nymin1,iz,n)/vv(nx/2-1,nymin1,iz,n))-xlonr |
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[4] | 368 | else if (vv(nx/2-1,nymin1,iz,n).gt.0.) then |
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| 369 | ddpol=pi+atan(uu(nx/2-1,nymin1,iz,n)/ & |
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[24] | 370 | vv(nx/2-1,nymin1,iz,n))-xlonr |
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[4] | 371 | else |
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| 372 | ddpol=pi/2-xlonr |
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| 373 | endif |
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| 374 | if(ddpol.lt.0.) ddpol=2.0*pi+ddpol |
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| 375 | if(ddpol.gt.2.0*pi) ddpol=ddpol-2.0*pi |
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| 376 | |
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| 377 | ! CALCULATE U,V FOR 180 DEG, TRANSFORM TO POLAR STEREOGRAPHIC GRID |
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| 378 | xlon=180.0 |
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| 379 | xlonr=xlon*pi/180. |
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| 380 | ylat=90.0 |
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| 381 | uuaux=-ffpol*sin(xlonr+ddpol) |
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| 382 | vvaux=-ffpol*cos(xlonr+ddpol) |
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[24] | 383 | call cc2gll(northpolemap,ylat,xlon,uuaux,vvaux,uupolaux,vvpolaux) |
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[4] | 384 | jy=nymin1 |
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| 385 | do ix=0,nxmin1 |
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| 386 | uupol(ix,jy,iz,n)=uupolaux |
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| 387 | vvpol(ix,jy,iz,n)=vvpolaux |
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| 388 | end do |
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| 389 | end do |
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| 390 | |
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| 391 | |
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| 392 | ! Fix: Set W at pole to the zonally averaged W of the next equator- |
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| 393 | ! ward parallel of latitude |
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| 394 | |
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| 395 | do iz=1,nz |
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| 396 | wdummy=0. |
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| 397 | jy=ny-2 |
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| 398 | do ix=0,nxmin1 |
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| 399 | wdummy=wdummy+ww(ix,jy,iz,n) |
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| 400 | end do |
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| 401 | wdummy=wdummy/real(nx) |
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| 402 | jy=nymin1 |
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| 403 | do ix=0,nxmin1 |
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| 404 | ww(ix,jy,iz,n)=wdummy |
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| 405 | end do |
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| 406 | end do |
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| 407 | |
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| 408 | endif |
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| 409 | |
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| 410 | |
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| 411 | ! If south pole is in the domain, calculate wind velocities in polar |
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| 412 | ! stereographic coordinates |
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| 413 | !******************************************************************* |
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| 414 | |
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| 415 | if (sglobal) then |
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| 416 | do jy=0,int(switchsouthg)+3 |
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| 417 | ylat=ylat0+real(jy)*dy |
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| 418 | do ix=0,nxmin1 |
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| 419 | xlon=xlon0+real(ix)*dx |
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| 420 | do iz=1,nz |
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| 421 | call cc2gll(southpolemap,ylat,xlon,uu(ix,jy,iz,n), & |
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[24] | 422 | vv(ix,jy,iz,n),uupol(ix,jy,iz,n),vvpol(ix,jy,iz,n)) |
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[4] | 423 | end do |
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| 424 | end do |
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| 425 | end do |
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| 426 | |
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| 427 | do iz=1,nz |
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| 428 | |
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| 429 | ! CALCULATE FFPOL, DDPOL FOR CENTRAL GRID POINT |
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| 430 | ! |
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| 431 | ! AMSnauffer Nov 18 2004 Added check for case vv=0 |
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| 432 | ! |
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| 433 | xlon=xlon0+real(nx/2-1)*dx |
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| 434 | xlonr=xlon*pi/180. |
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[24] | 435 | ffpol=sqrt(uu(nx/2-1,0,iz,n)**2+vv(nx/2-1,0,iz,n)**2) |
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[4] | 436 | if (vv(nx/2-1,0,iz,n).lt.0.) then |
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[24] | 437 | ddpol=atan(uu(nx/2-1,0,iz,n)/vv(nx/2-1,0,iz,n))+xlonr |
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[4] | 438 | else if (vv(nx/2-1,0,iz,n).gt.0.) then |
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[24] | 439 | ddpol=pi+atan(uu(nx/2-1,0,iz,n)/vv(nx/2-1,0,iz,n))+xlonr |
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[4] | 440 | else |
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| 441 | ddpol=pi/2-xlonr |
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| 442 | endif |
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| 443 | if(ddpol.lt.0.) ddpol=2.0*pi+ddpol |
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| 444 | if(ddpol.gt.2.0*pi) ddpol=ddpol-2.0*pi |
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| 445 | |
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| 446 | ! CALCULATE U,V FOR 180 DEG, TRANSFORM TO POLAR STEREOGRAPHIC GRID |
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| 447 | xlon=180.0 |
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| 448 | xlonr=xlon*pi/180. |
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| 449 | ylat=-90.0 |
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| 450 | uuaux=+ffpol*sin(xlonr-ddpol) |
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| 451 | vvaux=-ffpol*cos(xlonr-ddpol) |
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[24] | 452 | call cc2gll(northpolemap,ylat,xlon,uuaux,vvaux,uupolaux,vvpolaux) |
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[4] | 453 | |
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| 454 | jy=0 |
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| 455 | do ix=0,nxmin1 |
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| 456 | uupol(ix,jy,iz,n)=uupolaux |
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| 457 | vvpol(ix,jy,iz,n)=vvpolaux |
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| 458 | end do |
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| 459 | end do |
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| 460 | |
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| 461 | |
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| 462 | ! Fix: Set W at pole to the zonally averaged W of the next equator- |
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| 463 | ! ward parallel of latitude |
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| 464 | |
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| 465 | do iz=1,nz |
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| 466 | wdummy=0. |
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| 467 | jy=1 |
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| 468 | do ix=0,nxmin1 |
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| 469 | wdummy=wdummy+ww(ix,jy,iz,n) |
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| 470 | end do |
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| 471 | wdummy=wdummy/real(nx) |
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| 472 | jy=0 |
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| 473 | do ix=0,nxmin1 |
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| 474 | ww(ix,jy,iz,n)=wdummy |
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| 475 | end do |
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| 476 | end do |
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| 477 | endif |
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| 478 | |
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| 479 | |
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[37] | 480 | ! write (*,*) 'diagnosing clouds, n:',n,nymin1,nxmin1,nz |
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| 481 | jy_loop: & |
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[4] | 482 | do jy=0,nymin1 |
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| 483 | do ix=0,nxmin1 |
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[37] | 484 | |
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[24] | 485 | lsp=lsprec(ix,jy,1,n) |
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| 486 | convp=convprec(ix,jy,1,n) |
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[37] | 487 | prec=lsp+convp |
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| 488 | if (lsp .gt. convp) then ! prectype='lsp' |
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| 489 | lconvectprec = .false. |
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| 490 | else ! prectype='cp ' |
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| 491 | lconvectprec = .true. |
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| 492 | endif |
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| 493 | icloudbot(ix,jy,n)=icmv |
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| 494 | icloudtop=icmv ! this is just a local variable |
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| 495 | rhmin=rhmininit ! just initialise in a way that cond is true |
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| 496 | lsearch=.true. |
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| 497 | |
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| 498 | cloudsearch_loop: & |
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| 499 | do while (rhmin .ge. rhminx .and. lsearch) |
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| 500 | ! give up for < rhminx |
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| 501 | |
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| 502 | kz_loop: & |
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| 503 | do kz_inv=1,nz-1 |
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| 504 | kz=nz-kz_inv+1 |
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| 505 | pressure=rho(ix,jy,kz,n)*r_air*tt(ix,jy,kz,n) |
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| 506 | rh=qv(ix,jy,kz,n)/f_qvsat(pressure,tt(ix,jy,kz,n)) |
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| 507 | if (rh .gt. rhmin) then |
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| 508 | if (icloudbot(ix,jy,n) .eq. icmv) then |
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| 509 | icloudtop=nint(height(kz)) ! use int to save memory |
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[4] | 510 | endif |
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[37] | 511 | icloudbot(ix,jy,n)=nint(height(kz)) |
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| 512 | endif |
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| 513 | end do kz_loop |
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[4] | 514 | |
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[37] | 515 | ! PS try to get a cloud thicker than 50 m |
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| 516 | ! PS if there is at least precmin mm/h |
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| 517 | if (prec .gt. precmin .and. & |
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| 518 | ( icloudbot(ix,jy,n) .eq. icmv .or. & |
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| 519 | icloudtop-icloudbot(ix,jy,n) .lt. 50)) then |
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| 520 | rhmin = rhmin - 0.05 |
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| 521 | else |
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| 522 | lsearch = .false. |
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| 523 | endif |
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| 524 | |
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| 525 | enddo cloudsearch_loop |
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| 526 | |
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| 527 | ! PS implement a rough fix for badly represented convection |
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| 528 | ! PS is based on looking at a limited set of comparison data |
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| 529 | if (lconvectprec .and. icloudtop .lt. icloudtopconvmin .or. & |
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| 530 | icloudbot(ix,jy,n) .lt. icloudtopmin .and. prec .gt. precmin) then |
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| 531 | if (convp .lt. 0.1) then |
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| 532 | icloudbot(ix,jy,n) = icloudbot1 |
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| 533 | icloudtop = icloudtop1 |
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| 534 | else |
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| 535 | icloudbot(ix,jy,n) = icloudbot2 |
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| 536 | icloudtop = icloudtop2 |
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| 537 | endif |
---|
| 538 | endif |
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| 539 | |
---|
| 540 | if (icloudtop .ne. icmv) then |
---|
| 541 | icloudthck(ix,jy,n) = icloudtop-icloudbot(ix,jy,n) |
---|
| 542 | else |
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| 543 | icloudthck(ix,jy,n) = icmv ! no cloud found whatsoever |
---|
| 544 | endif |
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| 545 | |
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| 546 | ! PS get rid of too thin clouds |
---|
| 547 | if (icloudthck(ix,jy,n) .lt. 50) then |
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| 548 | icloudbot(ix,jy,n)=icmv |
---|
| 549 | icloudthck(ix,jy,n)=icmv |
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| 550 | endif |
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| 551 | |
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| 552 | enddo |
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| 553 | enddo jy_loop |
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| 554 | |
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[4] | 555 | end subroutine verttransform |
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