[16] | 1 | !*********************************************************************** |
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| 2 | !* Copyright 2012,2013 * |
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| 3 | !* Jerome Brioude, Delia Arnold, Andreas Stohl, Wayne Angevine, * |
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| 4 | !* John Burkhart, Massimo Cassiani, Adam Dingwell, Richard C Easter, Sabine Eckhardt,* |
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| 5 | !* Stephanie Evan, Jerome D Fast, Don Morton, Ignacio Pisso, * |
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| 6 | !* Petra Seibert, Gerard Wotawa, Caroline Forster, Harald Sodemann, * |
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| 7 | !* * |
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| 8 | !* This file is part of FLEXPART WRF * |
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| 9 | !* * |
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| 10 | !* FLEXPART is free software: you can redistribute it and/or modify * |
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| 11 | !* it under the terms of the GNU General Public License as published by* |
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| 12 | !* the Free Software Foundation, either version 3 of the License, or * |
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| 13 | !* (at your option) any later version. * |
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| 14 | !* * |
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| 15 | !* FLEXPART is distributed in the hope that it will be useful, * |
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| 16 | !* but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 17 | !* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 18 | !* GNU General Public License for more details. * |
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| 19 | !* * |
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| 20 | !* You should have received a copy of the GNU General Public License * |
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| 21 | !* along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
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| 22 | !*********************************************************************** |
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| 23 | subroutine calcpar_nests(n,uuhn,vvhn,pvhn) |
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| 24 | ! i i i o |
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| 25 | !******************************************************************************* |
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| 26 | ! * |
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| 27 | ! Computation of several boundary layer parameters needed for the * |
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| 28 | ! dispersion calculation and calculation of dry deposition velocities. * |
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| 29 | ! All parameters are calculated over the entire grid. * |
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| 30 | ! This routine is similar to calcpar, but is used for the nested grids. * |
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| 31 | ! * |
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| 32 | ! Note: This is the FLEXPART_WRF version of subroutine calcpar. * |
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| 33 | ! * |
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| 34 | ! Author: A. Stohl * |
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| 35 | ! * |
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| 36 | ! 8 February 1999 * |
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| 37 | ! * |
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| 38 | ! ------------------------------------------------------------------ * |
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| 39 | ! Petra Seibert, Feb 2000: * |
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| 40 | ! convection scheme: * |
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| 41 | ! new variables in call to richardson * |
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| 42 | ! * |
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| 43 | ! Changes, Bernd C. Krueger, Feb. 2001: * |
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| 44 | ! Variables tth and qvh (on eta coordinates) in common block * |
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| 45 | ! * |
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| 46 | ! 14 Nov 2005 - R. Easter - * |
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| 47 | ! use xyindex_to_ll_wrf to get latitude * |
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| 48 | ! limit ustar to < 5.0 m/s * |
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| 49 | ! added ierr in call to richardson * |
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| 50 | ! use pph for calculating zlev * |
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| 51 | ! pass level-2 pph directly to obukhov * |
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| 52 | ! 15 Nov 2005 - R. Easter - pass pplev to richardson instead of akz,bkz * |
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| 53 | ! Jul 2012: J. Brioude: coded in fortran90 and parallelized * |
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| 54 | !******************************************************************************* |
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| 55 | ! * |
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| 56 | ! Variables: * |
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| 57 | ! n temporal index for meteorological fields (1 to 3) * |
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| 58 | ! * |
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| 59 | ! Constants: * |
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| 60 | ! * |
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| 61 | ! * |
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| 62 | ! Functions: * |
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| 63 | ! scalev computation of ustar * |
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| 64 | ! obukhov computatio of Obukhov length * |
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| 65 | ! * |
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| 66 | !******************************************************************************* |
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| 67 | |
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| 68 | use par_mod |
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| 69 | use com_mod |
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| 70 | |
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| 71 | implicit none |
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| 72 | |
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| 73 | integer :: n,ix,jy,i,l,kz,lz,kzmin,ierr |
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| 74 | real :: ttlev(nuvzmax),qvlev(nuvzmax),obukhov,scalev,ol,hmixplus |
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| 75 | real :: pplev(nuvzmax),xlon |
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| 76 | real :: ulev(nuvzmax),vlev(nuvzmax),ew,rh,vd(maxspec),subsceff,ylat |
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| 77 | real :: altmin,tvold,pold,zold,pint,tv,zlev(nuvzmax) |
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| 78 | real(kind=4) :: uuhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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| 79 | real(kind=4) :: vvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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| 80 | real :: pvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
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| 81 | real,parameter :: const=r_air/ga |
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| 82 | |
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| 83 | |
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| 84 | ! Loop over all nests |
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| 85 | !******************** |
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| 86 | ! ientry = ientry + 1 |
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| 87 | |
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| 88 | do l=1,numbnests |
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| 89 | |
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| 90 | ! Loop over entire grid |
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| 91 | !********************** |
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| 92 | !$OMP PARALLEL DEFAULT(SHARED) & |
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| 93 | !$OMP PRIVATE(i,ix,jy,kz,lz,kzmin,tvold,pold,zold,zlev,tv,pint, & |
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| 94 | !$OMP rh,ierr,subsceff,ulev,vlev,pplev,ttlev,qvlev,ol,altmin,xlon,ylat ) |
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| 95 | !$OMP DO |
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| 96 | do jy=0,nyn(l)-1 |
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| 97 | |
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| 98 | do ix=0,nxn(l)-1 |
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| 99 | |
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| 100 | ! Set minimum height for tropopause |
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| 101 | !********************************** |
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| 102 | |
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| 103 | ! FLEXPART_WRF - use this routine to get lat,lon |
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| 104 | ! ylat=ylat0n(l)+real(jy)*dyn(l) |
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| 105 | call xyindex_to_ll_wrf( l, real(ix), real(jy), xlon, ylat ) |
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| 106 | |
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| 107 | ! if ( ((ix.eq.0) .or. (ix.eq.(nxn(l)-1)) .or. |
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| 108 | ! & (ix.eq.(nxn(l)-1)/2)) .and. |
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| 109 | ! & ((jy.eq.0) .or. (jy.eq.(nyn(l)-1)) .or. |
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| 110 | ! & (jy.eq.(nyn(l)-1)/2)) ) then |
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| 111 | ! if (ientry .eq. 1) then |
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| 112 | ! write(*,'(a,3i4,2f12.5)') |
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| 113 | ! & 'calcpar_nests l,i,j, xlon,ylat', |
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| 114 | ! & l, ix, jy, xlon, ylat |
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| 115 | ! write(*,'(a,12x,2f12.5)') |
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| 116 | ! & ' dlon,dlat', |
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| 117 | ! & (xlon-xlon2dn(ix,jy,l)), (ylat-ylat2dn(ix,jy,l)) |
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| 118 | ! end if |
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| 119 | ! end if |
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| 120 | |
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| 121 | if ((ylat.ge.-20.).and.(ylat.le.20.)) then |
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| 122 | altmin = 5000. |
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| 123 | else |
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| 124 | if ((ylat.gt.20.).and.(ylat.lt.40.)) then |
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| 125 | altmin=2500.+(40.-ylat)*125. |
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| 126 | else if ((ylat.gt.-40.).and.(ylat.lt.-20.)) then |
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| 127 | altmin=2500.+(40.+ylat)*125. |
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| 128 | else |
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| 129 | altmin=2500. |
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| 130 | endif |
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| 131 | endif |
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| 132 | |
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| 133 | ! 1) Calculation of friction velocity |
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| 134 | !************************************ |
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| 135 | if ( (.not.strswitch)) then |
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| 136 | |
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| 137 | ustarn(ix,jy,1,n,l)=scalev(psn(ix,jy,1,n,l),tt2n(ix,jy,1,n,l), & |
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| 138 | td2n(ix,jy,1,n,l),surfstrn(ix,jy,1,n,l)) |
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| 139 | endif |
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| 140 | ! FLEXPART_WRF - limit ustar |
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| 141 | if (ustarn(ix,jy,1,n,l).le.1.e-8) ustarn(ix,jy,1,n,l)=1.e-8 |
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| 142 | if (ustarn(ix,jy,1,n,l).ge.5.0) ustarn(ix,jy,1,n,l)=5.0 |
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| 143 | |
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| 144 | ! 2) Calculation of inverse Obukhov length scale |
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| 145 | !*********************************************** |
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| 146 | |
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| 147 | ! FLEXPART_WRF - pass k=2 pressure directly |
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| 148 | ! ol=obukhov(psn(ix,jy,1,n,l),tt2n(ix,jy,1,n,l), |
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| 149 | ! + td2n(ix,jy,1,n,l),tthn(ix,jy,2,n,l),ustarn(ix,jy,1,n,l), |
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| 150 | ! + sshfn(ix,jy,1,n,l),akm,bkm) |
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| 151 | ol=obukhov(psn(ix,jy,1,n,l),tt2n(ix,jy,1,n,l), & |
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| 152 | td2n(ix,jy,1,n,l),tthn(ix,jy,2,n,l),ustarn(ix,jy,1,n,l), & |
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| 153 | sshfn(ix,jy,1,n,l),pphn(ix,jy,2,n,l) ) |
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| 154 | if (ol.ne.0.) then |
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| 155 | olin(ix,jy,1,n,l)=1./ol |
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| 156 | else |
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| 157 | olin(ix,jy,1,n,l)=99999. |
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| 158 | endif |
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| 159 | |
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| 160 | |
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| 161 | ! 3) Calculation of convective velocity scale and mixing height |
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| 162 | !************************************************************** |
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| 163 | |
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| 164 | do i=1,nuvz |
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| 165 | ulev(i) =uuhn(ix,jy,i,l) |
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| 166 | vlev(i) =vvhn(ix,jy,i,l) |
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| 167 | pplev(i)=pphn(ix,jy,i,n,l) |
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| 168 | ttlev(i)=tthn(ix,jy,i,n,l) |
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| 169 | qvlev(i)=qvhn(ix,jy,i,n,l) |
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| 170 | end do |
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| 171 | |
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| 172 | ! FLEXPART_WRF - use & check ierr argument |
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| 173 | ! FLEXPART_WRF - pass pplev instead of akz,bkz |
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| 174 | ! call richardson(psn(ix,jy,1,n,l),ustarn(ix,jy,1,n,l),ttlev, |
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| 175 | ! + qvlev,ulev,vlev,nuvz,akz,bkz,sshfn(ix,jy,1,n,l), |
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| 176 | ! + tt2n(ix,jy,1,n,l),td2n(ix,jy,1,n,l),hmixn(ix,jy,1,n,l), |
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| 177 | ! + wstarn(ix,jy,1,n,l),hmixplus) |
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| 178 | call richardson(psn(ix,jy,1,n,l),ustarn(ix,jy,1,n,l),ttlev, & |
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| 179 | qvlev,ulev,vlev,nuvz, pplev,sshfn(ix,jy,1,n,l), & |
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| 180 | tt2n(ix,jy,1,n,l),td2n(ix,jy,1,n,l),hmixn(ix,jy,1,n,l), & |
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| 181 | wstarn(ix,jy,1,n,l),hmixplus,ierr,sfc_option) |
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| 182 | |
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| 183 | if (ierr .gt. 0) then |
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| 184 | write(*,9500) 'warning', l, ix, jy |
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| 185 | else if (ierr .lt. 0) then |
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| 186 | write(*,9500) 'failure', l, ix, jy |
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| 187 | stop |
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| 188 | end if |
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| 189 | 9500 format( 'calcpar_nests - richardson ', a, ' - l,ix,jy=', 3i5 ) |
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| 190 | |
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| 191 | if(lsubgrid.eq.1) then |
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| 192 | subsceff=min(excessoron(ix,jy,l),hmixplus) |
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| 193 | else |
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| 194 | subsceff=0 |
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| 195 | endif |
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| 196 | ! |
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| 197 | ! CALCULATE HMIX EXCESS ACCORDING TO SUBGRIDSCALE VARIABILITY AND STABILITY |
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| 198 | ! |
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| 199 | hmixn(ix,jy,1,n,l)=hmixn(ix,jy,1,n,l)+subsceff |
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| 200 | hmixn(ix,jy,1,n,l)=max(hmixmin,hmixn(ix,jy,1,n,l)) ! minim PBL height |
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| 201 | hmixn(ix,jy,1,n,l)=min(hmixmax,hmixn(ix,jy,1,n,l)) ! maxim PBL height |
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| 202 | |
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| 203 | |
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| 204 | ! 4) Calculation of dry deposition velocities |
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| 205 | !******************************************** |
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| 206 | |
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| 207 | if (DRYDEP) then |
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| 208 | z0(4)=0.016*ustarn(ix,jy,1,n,l)*ustarn(ix,jy,1,n,l)/ga |
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| 209 | z0(9)=0.016*ustarn(ix,jy,1,n,l)*ustarn(ix,jy,1,n,l)/ga |
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| 210 | |
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| 211 | ! Calculate relative humidity at surface |
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| 212 | !*************************************** |
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| 213 | rh=ew(td2n(ix,jy,1,n,l))/ew(tt2n(ix,jy,1,n,l)) |
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| 214 | |
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| 215 | call getvdep_nests(n,ix,jy,ustarn(ix,jy,1,n,l), & |
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| 216 | tt2n(ix,jy,1,n,l),psn(ix,jy,1,n,l),1./olin(ix,jy,1,n,l), & |
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| 217 | ssrn(ix,jy,1,n,l),rh,lsprecn(ix,jy,1,n,l)+ & |
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| 218 | convprecn(ix,jy,1,n,l),vd,l) |
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| 219 | |
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| 220 | do i=1,nspec |
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| 221 | vdepn(ix,jy,i,n,l)=vd(i) |
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| 222 | enddo |
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| 223 | endif |
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| 224 | |
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| 225 | !****************************************************** |
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| 226 | ! Calculate height of thermal tropopause (Hoinka, 1997) |
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| 227 | !****************************************************** |
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| 228 | |
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| 229 | ! 1) Calculate altitudes of ECMWF model levels |
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| 230 | !********************************************* |
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| 231 | |
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| 232 | tvold=tt2n(ix,jy,1,n,l)*(1.+0.378*ew(td2n(ix,jy,1,n,l))/ & |
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| 233 | psn(ix,jy,1,n,l)) |
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| 234 | pold=psn(ix,jy,1,n,l) |
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| 235 | zold=0. |
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| 236 | ! FLEXPART_WRF - set zlev(1) |
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| 237 | zlev(1)=zold |
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| 238 | do kz=2,nuvz |
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| 239 | pint=akz(kz)+bkz(kz)*psn(ix,jy,1,n,l) ! pressure on model layers |
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| 240 | tv=tthn(ix,jy,kz,n,l)*(1.+0.608*qvhn(ix,jy,kz,n,l)) |
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| 241 | |
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| 242 | if (abs(tv-tvold).gt.0.2) then |
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| 243 | zlev(kz)=zold+const*log(pold/pint)*(tv-tvold)/log(tv/tvold) |
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| 244 | else |
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| 245 | zlev(kz)=zold+const*log(pold/pint)*tv |
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| 246 | endif |
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| 247 | tvold=tv |
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| 248 | pold=pint |
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| 249 | zold=zlev(kz) |
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| 250 | end do |
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| 251 | |
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| 252 | ! 2) Define a minimum level kzmin, from which upward the tropopause is |
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| 253 | ! searched for. This is to avoid inversions in the lower troposphere |
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| 254 | ! to be identified as the tropopause |
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| 255 | !************************************************************************ |
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| 256 | |
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| 257 | do kz=1,nuvz |
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| 258 | if (zlev(kz).ge.altmin) then |
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| 259 | kzmin=kz |
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| 260 | goto 45 |
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| 261 | endif |
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| 262 | end do |
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| 263 | 45 continue |
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| 264 | |
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| 265 | ! 3) Search for first stable layer above minimum height that fulfills the |
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| 266 | ! thermal tropopause criterion |
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| 267 | !************************************************************************ |
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| 268 | |
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| 269 | do kz=kzmin,nuvz |
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| 270 | do lz=kz+1,nuvz |
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| 271 | if ((zlev(lz)-zlev(kz)).gt.2000.) then |
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| 272 | if (((tthn(ix,jy,kz,n,l)-tthn(ix,jy,lz,n,l))/ & |
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| 273 | (zlev(lz)-zlev(kz))).lt.0.002) then |
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| 274 | tropopausen(ix,jy,1,n,l)=zlev(kz) |
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| 275 | goto 51 |
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| 276 | endif |
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| 277 | goto 50 |
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| 278 | endif |
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| 279 | end do |
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| 280 | 50 continue |
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| 281 | end do |
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| 282 | 51 continue |
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| 283 | |
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| 284 | |
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| 285 | end do |
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| 286 | end do |
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| 287 | !$OMP END DO |
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| 288 | !$OMP END PARALLEL |
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| 289 | |
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| 290 | ! Calculation of potential vorticity on 3-d grid, if plume trajectory mode is used |
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| 291 | !********************************************************************************* |
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| 292 | |
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| 293 | if ((iout.eq.4).or.(iout.eq.5)) then |
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| 294 | call calcpv_nests(l,n,uuhn,vvhn,pvhn) |
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| 295 | endif |
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| 296 | |
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| 297 | enddo |
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| 298 | |
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| 299 | |
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| 300 | end subroutine calcpar_nests |
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| 301 | |
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