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 | subroutine verttransform_nests(n,uuhn,vvhn,wwhn,pvhn,divhn) |
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24 | ! i i i i i |
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25 | !******************************************************************************* |
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26 | ! * |
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27 | ! Note: This is the FLEXPART_WRF version of subroutine verttransform_nests. * |
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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 subroutine transforms temperature, dew point temperature and * |
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31 | ! wind components from eta to meter coordinates. * |
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32 | ! The vertical wind component is transformed from Pa/s to m/s using * |
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33 | ! the conversion factor pinmconv. * |
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34 | ! In addition, this routine calculates vertical density gradients * |
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35 | ! needed for the parameterization of the turbulent velocities. * |
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36 | ! It is similar to verttransform, but makes the transformations for * |
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37 | ! the nested grids. * |
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38 | ! * |
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39 | ! Author: A. Stohl, G. Wotawa * |
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40 | ! * |
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41 | ! 12 August 1996 * |
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42 | ! Update: 16 January 1998 * |
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43 | ! * |
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44 | ! Major update: 17 February 1999 * |
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45 | ! by G. Wotawa * |
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46 | ! * |
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47 | ! - Vertical levels for u, v and w are put together * |
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48 | ! - Slope correction for vertical velocity: Modification of calculation * |
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49 | ! procedure * |
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50 | ! * |
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51 | ! Changes, Bernd C. Krueger, Feb. 2001: (marked "C-cv") * |
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52 | ! Variables tthn and qvhn (on eta coordinates) from common block * |
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53 | ! * |
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54 | ! 16 Nov 2005, R. Easter - changes for FLEXPART_WRF * |
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55 | ! 17 Nov 2005 - R. Easter - terrain correction applied to ww. There are * |
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56 | ! now 3 options, controlled by "method_w_terrain_correction" * |
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57 | ! * |
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58 | ! 11 June 2007 -- convert TKEhn to tken |
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59 | ! 25 June 2007 -- convert ptthn to pttn |
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60 | ! Jan 2012, J Brioude: modified to handle different wind options and openmp |
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61 | !******************************************************************************* |
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62 | ! * |
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63 | ! Variables: * |
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64 | ! nxn,nyn,nuvz,nwz field dimensions in x,y and z direction * |
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65 | ! uun wind components in x-direction [m/s] * |
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66 | ! vvn wind components in y-direction [m/s] * |
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67 | ! wwn wind components in z-direction [deltaeta/s] * |
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68 | ! ttn temperature [K] * |
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69 | ! pvn potential vorticity (pvu) * |
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70 | ! psn surface pressure [Pa] * |
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71 | ! * |
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72 | !******************************************************************************* |
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73 | |
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74 | use par_mod |
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75 | use com_mod |
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76 | |
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77 | ! include 'includepar' |
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78 | ! include 'includecom' |
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79 | implicit none |
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80 | integer :: ix,jy,kz,iz,n,l,kmin,kl,klp,ix1,jy1,ixp,jyp,ixm,jym |
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81 | integer :: icloudtop |
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82 | real :: rh,lsp,convp,prec,rhmin |
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83 | integer :: method_z_compute,aa,dimx,dimy |
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84 | real :: uvzlev(nuvzmax),wzlev(nwzmax),rhoh(nuvzmax),pinmconv(nzmax) |
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85 | real :: uvwzlev(0:nxmaxn-1,0:nymaxn-1,nzmax) |
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86 | real :: ew,pint,tv,tvold,pold,const,dz1,dz2,dz,ui,vi |
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87 | real :: dzdx,dzdy |
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88 | real :: dzdx1,dzdx2,dzdy1,dzdy2 |
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89 | real :: pvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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90 | real :: divn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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91 | real(kind=4) :: uuhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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92 | real(kind=4) :: vvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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93 | real(kind=4) :: wwhn(0:nxmaxn-1,0:nymaxn-1,nwzmax,maxnests) |
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94 | real(kind=4) :: divhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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95 | real :: wwhn_svaa(nwzmax),u,v |
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96 | parameter(const=r_air/ga) |
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97 | ! integer :: rain_cloud_above,kz_inv |
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98 | |
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99 | real :: f_qvsat,pressure |
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100 | ! real :: rh,lsp,convp |
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101 | real,parameter :: precmin = 0.002 |
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102 | |
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103 | ! CDA |
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104 | logical :: lconvectprec = .true. |
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105 | |
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106 | |
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107 | ! set method_z_compute |
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108 | method_z_compute = 10 |
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109 | |
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110 | |
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111 | ! Loop over all nests |
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112 | !******************** |
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113 | |
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114 | do l=1,numbnests |
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115 | dimy=nyn(l)-1 |
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116 | dimx=nxn(l)-1 |
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117 | ! print*,'start omp ' |
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118 | ! Loop over the whole grid |
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119 | !************************* |
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120 | !!!$OMP PARALLEL DEFAULT(SHARED) & |
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121 | !!!$OMP PRIVATE(ix,jy,ixm,jym,tvold,pold,pint,tv,rhoh,uvzlev,wzlev, & |
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122 | !!!$OMP uvwzlev,pinmconv,kz,iz,kmin,dz1,dz2,dz,ix1,jy1,ixp,jyp, & |
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123 | !!!$OMP dzdy,dzdx,aa,u,v ) |
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124 | !$OMP DO |
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125 | do jy=0,dimy |
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126 | do ix=0,dimx |
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127 | |
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128 | tvold=tt2n(ix,jy,1,n,l)*(1.+0.378*ew(td2n(ix,jy,1,n,l))/ & |
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129 | psn(ix,jy,1,n,l)) |
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130 | pold=psn(ix,jy,1,n,l) |
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131 | uvzlev(1)=0. |
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132 | wzlev(1)=0. |
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133 | rhoh(1)=pold/(r_air*tvold) |
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134 | |
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135 | |
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136 | ! Compute heights of eta levels |
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137 | !****************************** |
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138 | |
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139 | do kz=2,nuvz |
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140 | ! FLEXPART_WRF - pphn hold pressure |
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141 | ! pint=akz(kz)+bkz(kz)*psn(ix,jy,1,n,l) |
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142 | pint=pphn(ix,jy,kz,n,l) |
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143 | tv=tthn(ix,jy,kz,n,l)*(1.+0.608*qvhn(ix,jy,kz,n,l)) |
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144 | rhoh(kz)=pint/(r_air*tv) |
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145 | |
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146 | if (abs(tv-tvold).gt.0.2) then |
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147 | uvzlev(kz)=uvzlev(kz-1)+const*log(pold/pint)* & |
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148 | (tv-tvold)/log(tv/tvold) |
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149 | else |
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150 | uvzlev(kz)=uvzlev(kz-1)+const*log(pold/pint)*tv |
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151 | endif |
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152 | |
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153 | tvold=tv |
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154 | pold=pint |
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155 | end do |
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156 | |
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157 | |
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158 | ! print*,'etap 1',ix,jy |
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159 | |
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160 | do kz=2,nwz-1 |
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161 | wzlev(kz)=(uvzlev(kz+1)+uvzlev(kz))/2. |
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162 | end do |
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163 | wzlev(nwz)=wzlev(nwz-1)+ & |
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164 | uvzlev(nuvz)-uvzlev(nuvz-1) |
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165 | |
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166 | ! FLEXPART_WRF - get uvzlev & wzlev from zzh |
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167 | if (method_z_compute .eq. 10) then |
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168 | do kz = 2, nuvz |
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169 | if ((add_sfc_level .eq. 1) .and. (kz .eq. 2)) then |
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170 | uvzlev(kz) = 0.5*(zzhn(ix,jy,3,n,l) + & |
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171 | zzhn(ix,jy,1,n,l)) & |
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172 | - zzhn(ix,jy,1,n,l) |
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173 | else |
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174 | uvzlev(kz) = 0.5*(zzhn(ix,jy,kz+1,n,l) + & |
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175 | zzhn(ix,jy,kz ,n,l)) & |
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176 | - zzhn(ix,jy,1,n,l) |
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177 | end if |
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178 | end do |
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179 | do kz = 2, nwz |
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180 | wzlev(kz) = zzhn(ix,jy,kz+add_sfc_level,n,l) & |
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181 | - zzhn(ix,jy,1,n,l) |
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182 | end do |
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183 | end if |
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184 | |
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185 | ! print*,'etap 2',ix,jy |
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186 | ! NOTE: In FLEXPART versions up to 4.0, the number of model levels was doubled |
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187 | ! upon the transformation to z levels. In order to save computer memory, this is |
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188 | ! not done anymore in the standard version. However, this option can still be |
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189 | ! switched on by replacing the following lines with those below, that are |
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190 | ! currently commented out. |
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191 | ! Note that one change is also necessary in gridcheck.f, |
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192 | ! and three changes in verttransform.f |
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193 | ! |
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194 | ! *** NOTE -- the doubled vertical resolution has not been tested in FLEXPART_WRF |
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195 | !******************************************************************************* |
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196 | uvwzlev(ix,jy,1)=0.0 |
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197 | do kz=2,nuvz |
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198 | uvwzlev(ix,jy,kz)=uvzlev(kz) |
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199 | enddo |
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200 | ! Switch on following lines to use doubled vertical resolution |
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201 | ! Switch off the three lines above. |
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202 | ! |
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203 | ! *** NOTE -- the doubled vertical resolution has not been tested in FLEXPART_WRF |
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204 | !************************************************************* |
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205 | !22 uvwzlev(ix,jy,(kz-1)*2)=uvzlev(kz) |
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206 | ! do 23 kz=2,nwz |
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207 | !23 uvwzlev(ix,jy,(kz-1)*2+1)=wzlev(kz) |
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208 | ! End doubled vertical resolution |
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209 | |
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210 | ! pinmconv=(h2-h1)/(p2-p1) |
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211 | ! |
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212 | ! in flexpart_ecmwf, pinmconv is used to convert etadot to w |
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213 | ! in FLEXPART_WRF, vertical velocity is already m/s, so pinmconv=1.0 |
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214 | ! |
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215 | ! pinmconv(1)=(uvwzlev(ix,jy,2)-uvwzlev(ix,jy,1))/ |
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216 | ! + ((aknew(2)+bknew(2)*psn(ix,jy,1,n,l))- |
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217 | ! + (aknew(1)+bknew(1)*psn(ix,jy,1,n,l))) |
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218 | if (wind_option.eq.0) then |
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219 | pinmconv(1)=1.0 |
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220 | do kz=2,nz-1 |
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221 | pinmconv(kz)=1.0 |
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222 | enddo |
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223 | pinmconv(nz)=1.0 |
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224 | elseif (wind_option.eq.1) then |
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225 | ! pinmconv(1)=(uvzlev(2)-uvzlev(1)) & |
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226 | ! /(eta_u_wrf(1)-1.) |
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227 | pinmconv(1)=(wzlev(2)-0.) & |
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228 | /(eta_w_wrf(2)-1.) |
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229 | do kz=2,nz-1 |
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230 | ! pinmconv(kz)=(uvzlev(kz)-uvzlev(kz-1)) & |
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231 | ! /(eta_u_wrf(kz)-eta_u_wrf(kz-1)) |
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232 | pinmconv(kz)=(wzlev(kz+1)-wzlev(kz-1)) & |
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233 | /(eta_w_wrf(kz+1)-eta_w_wrf(kz-1)) |
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234 | enddo |
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235 | pinmconv(nwz)=pinmconv(nwz-1) |
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236 | endif |
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237 | |
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238 | |
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239 | ! print*,'etap 3',ix,jy |
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240 | |
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241 | ! Levels, where u,v,t and q are given |
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242 | !************************************ |
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243 | |
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244 | uun(ix,jy,1,n,l)=uuhn(ix,jy,1,l) |
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245 | vvn(ix,jy,1,n,l)=vvhn(ix,jy,1,l) |
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246 | divn(ix,jy,1,l)=divhn(ix,jy,1,l) |
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247 | ttn(ix,jy,1,n,l)=tthn(ix,jy,1,n,l) |
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248 | qvn(ix,jy,1,n,l)=qvhn(ix,jy,1,n,l) |
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249 | pvn(ix,jy,1,n,l)=pvhn(ix,jy,1,l) |
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250 | rhon(ix,jy,1,n,l)=rhoh(1) |
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251 | uun(ix,jy,nz,n,l)=uuhn(ix,jy,nuvz,l) |
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252 | vvn(ix,jy,nz,n,l)=vvhn(ix,jy,nuvz,l) |
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253 | ttn(ix,jy,nz,n,l)=tthn(ix,jy,nuvz,n,l) |
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254 | qvn(ix,jy,nz,n,l)=qvhn(ix,jy,nuvz,n,l) |
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255 | pvn(ix,jy,nz,n,l)=pvhn(ix,jy,nuvz,l) |
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256 | rhon(ix,jy,nz,n,l)=rhoh(nuvz) |
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257 | tken(ix,jy,1,n,l)=tkehn(ix,jy,1,n,l) |
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258 | tken(ix,jy,nz,n,l)=tkehn(ix,jy,nuvz,n,l) |
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259 | pttn(ix,jy,1,n,l)=ptthn(ix,jy,1,n,l) |
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260 | pttn(ix,jy,nz,n,l)=ptthn(ix,jy,nuvz,n,l) |
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261 | |
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262 | |
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263 | ! print*,'etap 3.5',ix,jy |
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264 | kmin=2 |
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265 | do iz=2,nz-1 |
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266 | do kz=kmin,nuvz |
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267 | if(heightmid(iz).gt.uvzlev(nuvz)) then |
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268 | divn(ix,jy,iz,l)=divn(ix,jy,nz,l) |
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269 | goto 230 |
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270 | endif |
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271 | !! print*,'etap 3.7',kz,iz,heightmid(iz),uvzlev(kz-1),uvzlev(kz) |
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272 | if ((heightmid(iz).gt.uvzlev(kz-1)).and. & |
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273 | (heightmid(iz).le.uvzlev(kz))) then |
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274 | dz1=heightmid(iz)-uvzlev(kz-1) |
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275 | dz2=uvzlev(kz)-heightmid(iz) |
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276 | dz=dz1+dz2 |
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277 | divn(ix,jy,iz,l)=(divhn(ix,jy,kz-1,l)*dz2+divhn(ix,jy,kz,l)*dz1)/dz |
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278 | kmin=kz |
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279 | goto 230 |
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280 | endif |
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281 | end do |
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282 | 230 continue |
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283 | end do |
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284 | |
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285 | ! print*,'etap 4',ix,jy |
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286 | |
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287 | kmin=2 |
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288 | do iz=2,nz-1 |
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289 | do kz=kmin,nuvz |
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290 | if(height(iz).gt.uvzlev(nuvz)) then |
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291 | uun(ix,jy,iz,n,l)=uun(ix,jy,nz,n,l) |
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292 | vvn(ix,jy,iz,n,l)=vvn(ix,jy,nz,n,l) |
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293 | ttn(ix,jy,iz,n,l)=ttn(ix,jy,nz,n,l) |
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294 | qvn(ix,jy,iz,n,l)=qvn(ix,jy,nz,n,l) |
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295 | pvn(ix,jy,iz,n,l)=pvn(ix,jy,nz,n,l) |
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296 | rhon(ix,jy,iz,n,l)=rhon(ix,jy,nz,n,l) |
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297 | tken(ix,jy,iz,n,l)=tken(ix,jy,nz,n,l) |
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298 | pttn(ix,jy,iz,n,l)=pttn(ix,jy,nz,n,l) |
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299 | goto 30 |
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300 | endif |
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301 | if ((height(iz).gt.uvzlev(kz-1)).and. & |
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302 | (height(iz).le.uvzlev(kz))) then |
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303 | dz1=height(iz)-uvzlev(kz-1) |
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304 | dz2=uvzlev(kz)-height(iz) |
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305 | dz=dz1+dz2 |
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306 | uun(ix,jy,iz,n,l)=(uuhn(ix,jy,kz-1,l)*dz2+ & |
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307 | uuhn(ix,jy,kz,l)*dz1)/dz |
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308 | vvn(ix,jy,iz,n,l)=(vvhn(ix,jy,kz-1,l)*dz2+ & |
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309 | vvhn(ix,jy,kz,l)*dz1)/dz |
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310 | ttn(ix,jy,iz,n,l)=(tthn(ix,jy,kz-1,n,l)*dz2+ & |
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311 | tthn(ix,jy,kz,n,l)*dz1)/dz |
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312 | qvn(ix,jy,iz,n,l)=(qvhn(ix,jy,kz-1,n,l)*dz2+ & |
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313 | qvhn(ix,jy,kz,n,l)*dz1)/dz |
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314 | pvn(ix,jy,iz,n,l)=(pvhn(ix,jy,kz-1,l)*dz2+ & |
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315 | pvhn(ix,jy,kz,l)*dz1)/dz |
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316 | rhon(ix,jy,iz,n,l)=(rhoh(kz-1)*dz2+rhoh(kz)*dz1)/dz |
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317 | tken(ix,jy,iz,n,l)=(tkehn(ix,jy,kz-1,n,l)*dz2+ & |
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318 | tkehn(ix,jy,kz,n,l)*dz1)/dz |
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319 | pttn(ix,jy,iz,n,l)=(ptthn(ix,jy,kz-1,n,l)*dz2+ & |
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320 | ptthn(ix,jy,kz,n,l)*dz1)/dz |
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321 | |
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322 | |
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323 | kmin=kz |
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324 | goto 30 |
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325 | endif |
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326 | end do |
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327 | 30 continue |
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328 | end do |
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329 | |
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330 | ! print*,'continue to ww in nests' |
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331 | ! Levels, where w is given |
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332 | !************************* |
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333 | |
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334 | if (method_w_terrain_correction .eq. 20) then |
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335 | ! apply w correction assuming that the WRF w is "absolute w"; |
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336 | ! apply it here to wwh; set wwh=0 at iz=1 |
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337 | ix1 = max( ix-1, 0 ) |
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338 | jy1 = max( jy-1, 0 ) |
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339 | ixp = min( ix+1, nxn(l)-1 ) |
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340 | jyp = min( jy+1, nyn(l)-1 ) |
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341 | if (wind_option.eq.0) then |
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342 | dzdx=(oron(ixp,jy,l)-oron(ix1,jy,l))/(dxn(l)*(ixp-ix1)*m_xn(ix,jy,1,l)) |
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343 | dzdy=(oron(ix,jyp,l)-oron(ix,jy1,l))/(dyn(l)*(jyp-jy1)*m_yn(ix,jy,1,l)) |
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344 | |
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345 | do kz = 1, nwz-1 |
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346 | ! wwhn_svaa(kz) = wwhn(ix,jy,kz,l) |
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347 | wwhn(ix,jy,kz,l) = wwhn(ix,jy,kz,l) & |
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348 | - (uuhn(ix,jy,kz,l)*dzdx + vvhn(ix,jy,kz,l)*dzdy) |
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349 | ! if (kz .eq. 1) wwhn(ix,jy,kz,l) = 0.0 |
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350 | end do |
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351 | elseif (wind_option.ge.1) then |
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352 | do kz = 2, nwz-1 |
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353 | ! wwhn_svaa(kz) = wwhn(ix,jy,kz,l) |
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354 | dzdx=(zzhn(ixp,jy,kz+add_sfc_level,n,l) - zzhn(ix1,jy,kz+add_sfc_level,n,l) & |
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355 | -zzhn(ixp,jy,1,n,l) & |
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356 | +zzhn(ix1,jy,1,n,l)) & |
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357 | /(dxn(l)*(ixp-ix1)*m_xn(ix,jy,1,l)) |
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358 | dzdy=(zzhn(ix,jyp,kz+add_sfc_level,n,l) - zzhn(ix,jy1,kz+add_sfc_level,n,l) & |
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359 | -zzhn(ix,jyp,1,n,l) & |
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360 | +zzhn(ix,jy1,1,n,l)) & |
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361 | /(dyn(l)*(jyp-jy1)*m_yn(ix,jy,1,l)) |
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362 | |
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363 | dzdx=(zzhn(ixp,jy,kz+add_sfc_level,n,l) - zzhn(ix1,jy,kz+add_sfc_level,n,l) & |
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364 | -zzhn(ixp,jy,1,n,l)+zzhn(ix1,jy,1,n,l))/(dxn(l)*(ixp-ix1)*m_xn(ix,jy,1,l)) |
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365 | dzdy=(zzhn(ix,jyp,kz+add_sfc_level,n,l) - zzhn(ix,jy1,kz+add_sfc_level,n,l) & |
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366 | -zzhn(ix,jyp,1,n,l)+zzhn(ix,jy1,1,n,l))/(dyn(l)*(jyp-jy1)*m_yn(ix,jy,1,l)) |
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367 | u=0.5*(uuhn(ix,jy,kz+add_sfc_level,l)+uuhn(ix,jy,kz-1+add_sfc_level,l)) |
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368 | v=0.5*(vvhn(ix,jy,kz+add_sfc_level,l)+vvhn(ix,jy,kz-1+add_sfc_level,l)) |
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369 | |
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370 | wwhn(ix,jy,kz,l) = wwhn(ix,jy,kz,l)*pinmconv(kz) & |
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371 | ! + (uuhn(ix,jy,kz,l)*dzdx + vvhn(ix,jy,kz,l)*dzdy) ! variation of geopot on sigma is necessary |
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372 | + (u*dzdx + v*dzdy) ! variation of geopot on sigma is necessary |
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373 | if (kz .eq. 1) wwhn(ix,jy,kz,l) = wwhn(ix,jy,kz,l)*pinmconv(kz) |
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374 | |
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375 | ! if (kz .eq. 1) wwhn(ix,jy,kz,l) = 0.0 |
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376 | end do |
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377 | endif |
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378 | if (wind_option.eq.-1) then |
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379 | !! ww(ix,jy,1,n)=wwh(ix,jy,1) |
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380 | wwn(ix,jy,1,n,l)=0. |
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381 | do iz=2,nz |
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382 | wwn(ix,jy,iz,n,l)=wwn(ix,jy,iz-1,n,l)-(height(iz)-height(iz-1))* & |
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383 | divn(ix,jy,iz-1,l) |
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384 | enddo |
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385 | else |
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386 | ! print*,'converting ww in nest' |
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387 | wwn(ix,jy,1,n,l)=wwhn(ix,jy,1,l) |
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388 | wwn(ix,jy,nz,n,l)=wwhn(ix,jy,nwz,l) |
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389 | kmin=2 |
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390 | do iz=2,nz |
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391 | do kz=kmin,nwz |
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392 | if ((height(iz).gt.wzlev(kz-1)).and. & |
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393 | (height(iz).le.wzlev(kz))) then |
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394 | dz1=height(iz)-wzlev(kz-1) |
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395 | dz2=wzlev(kz)-height(iz) |
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396 | dz=dz1+dz2 |
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397 | wwn(ix,jy,iz,n,l)=(wwhn(ix,jy,kz-1,l)*dz2+ & |
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398 | wwhn(ix,jy,kz,l)*dz1)/dz |
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399 | kmin=kz |
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400 | goto 40 |
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401 | endif |
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402 | end do |
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403 | 40 continue |
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404 | end do |
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405 | endif |
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406 | |
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407 | ! if (method_w_terrain_correction .eq. 20) then |
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408 | ! do kz = 1, nwz |
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409 | ! wwhn(ix,jy,kz,l) = wwhn_svaa(kz) |
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410 | ! end do |
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411 | ! end if |
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412 | end if |
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413 | |
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414 | ! Compute density gradients at intermediate levels |
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415 | !************************************************* |
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416 | |
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417 | drhodzn(ix,jy,1,n,l)=(rhon(ix,jy,2,n,l)-rhon(ix,jy,1,n,l))/ & |
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418 | (height(2)-height(1)) |
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419 | do kz=2,nz-1 |
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420 | drhodzn(ix,jy,kz,n,l)=(rhon(ix,jy,kz+1,n,l)- & |
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421 | rhon(ix,jy,kz-1,n,l))/(height(kz+1)-height(kz-1)) |
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422 | end do |
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423 | drhodzn(ix,jy,nz,n,l)=drhodzn(ix,jy,nz-1,n,l) |
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424 | |
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425 | end do |
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426 | end do |
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427 | !!!$OMP END DO |
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428 | !!!$OMP END PARALLEL |
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429 | |
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430 | ! print*,'end of ww, now clouds, nests' |
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431 | !**************************************************************** |
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432 | ! Compute slope of eta levels in windward direction and resulting |
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433 | ! vertical wind correction |
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434 | ! |
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435 | ! See notes in verttransform.f about the w correction done here. |
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436 | !**************************************************************** |
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437 | !write (*,*) 'initializing clouds, n:',n,nymin1,nxmin1,nz^M |
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438 | ! create a cloud and rainout/washout field, clouds occur where rh>80%^M |
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439 | ! total cloudheight is stored at level 0^M |
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440 | |
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441 | do 100 jy=0,nyn(l)-1 |
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442 | do 100 ix=0,nxn(l)-1 |
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443 | ! rain_cloud_above=0 |
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444 | lsp=lsprecn(ix,jy,1,n,l) |
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445 | convp=convprecn(ix,jy,1,n,l) |
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446 | |
---|
447 | ! cloudsh(ix,jy,n)=0 |
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448 | |
---|
449 | prec=lsp+convp |
---|
450 | if (lsp.gt.convp) then ! prectype='lsp' |
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451 | lconvectprec = .false. |
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452 | else ! prectype='cp ' |
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453 | lconvectprec = .true. |
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454 | endif |
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455 | rhmin = 0.90 ! standard condition for presence of clouds |
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456 | |
---|
457 | !CPS note that original by Sabine Eckhart was 80% |
---|
458 | !CPS however, for T<-20 C we consider saturation over ice |
---|
459 | !CPS so I think 90% should be enough |
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460 | |
---|
461 | icloudbotn(ix,jy,n,l)=icmv |
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462 | icloudtop=icmv ! this is just a local variable |
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463 | 98 do kz=1,nz |
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464 | pressure=rhon(ix,jy,kz,n,l)*r_air*ttn(ix,jy,kz,n,l) |
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465 | rh=qvn(ix,jy,kz,n,l)/f_qvsat(pressure,ttn(ix,jy,kz,n,l)) |
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466 | !cps if (prec.gt.0.01) print*,'relhum',prec,kz,rh,height(kz) |
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467 | if (rh .gt. rhmin) then |
---|
468 | if (icloudbotn(ix,jy,n,l) .eq. icmv) then |
---|
469 | icloudbotn(ix,jy,n,l)=nint(height(kz)) |
---|
470 | endif |
---|
471 | icloudtop=nint(height(kz)) ! use int to save memory |
---|
472 | endif |
---|
473 | enddo |
---|
474 | |
---|
475 | !CPS try to get a cloud thicker than 50 m |
---|
476 | !CPS if there is at least .01 mm/h - changed to 0.002 and put into |
---|
477 | !CPS parameter precpmin |
---|
478 | if ((icloudbotn(ix,jy,n,l) .eq. icmv .or. & |
---|
479 | icloudtop-icloudbotn(ix,jy,n,l) .lt. 50) .and. & |
---|
480 | prec .gt. precmin) then |
---|
481 | rhmin = rhmin - 0.05 |
---|
482 | if (rhmin .ge. 0.30) goto 98 ! give up for <= 25% rel.hum. |
---|
483 | endif |
---|
484 | !CPS implement a rough fix for badly represented convection |
---|
485 | !CPS is based on looking at a limited set of comparison data |
---|
486 | if (lconvectprec .and. icloudtop .lt. 6000 .and. & |
---|
487 | prec .gt. precmin) then |
---|
488 | if (convp .lt. 0.1) then |
---|
489 | icloudbotn(ix,jy,n,l) = 500 |
---|
490 | icloudtop = 8000 |
---|
491 | else |
---|
492 | icloudbotn(ix,jy,n,l) = 0 |
---|
493 | icloudtop = 10000 |
---|
494 | endif |
---|
495 | endif |
---|
496 | if (icloudtop .ne. icmv) then |
---|
497 | icloudthckn(ix,jy,n,l) = icloudtop-icloudbotn(ix,jy,n,l) |
---|
498 | else |
---|
499 | icloudthckn(ix,jy,n,l) = icmv |
---|
500 | endif |
---|
501 | !CPS get rid of too thin clouds |
---|
502 | if (icloudthckn(ix,jy,n,l) .lt. 50) then |
---|
503 | icloudbotn(ix,jy,n,l)=icmv |
---|
504 | icloudthckn(ix,jy,n,l)=icmv |
---|
505 | endif |
---|
506 | |
---|
507 | 100 continue |
---|
508 | enddo ! nests |
---|
509 | |
---|
510 | return |
---|
511 | end |
---|