| 1 | !********************************************************************** |
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| 2 | ! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 * |
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| 3 | ! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, * |
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| 4 | ! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann * |
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| 5 | ! * |
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| 6 | ! This file is part of FLEXPART. * |
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| 7 | ! * |
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| 8 | ! FLEXPART is free software: you can redistribute it and/or modify * |
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| 9 | ! it under the terms of the GNU General Public License as published by* |
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| 10 | ! the Free Software Foundation, either version 3 of the License, or * |
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| 11 | ! (at your option) any later version. * |
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| 12 | ! * |
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| 13 | ! FLEXPART is distributed in the hope that it will be useful, * |
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| 14 | ! but WITHOUT ANY WARRANTY; without even the implied warranty of * |
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| 15 | ! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
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| 16 | ! GNU General Public License for more details. * |
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| 17 | ! * |
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| 18 | ! You should have received a copy of the GNU General Public License * |
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| 19 | ! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. * |
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| 20 | !********************************************************************** |
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| 21 | |
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| 22 | subroutine convmix(itime) |
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| 23 | ! i |
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| 24 | !************************************************************** |
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| 25 | !handles all the calculations related to convective mixing |
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| 26 | !Petra Seibert, Bernd C. Krueger, Feb 2001 |
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| 27 | !nested grids included, Bernd C. Krueger, May 2001 |
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| 28 | ! |
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| 29 | !Changes by Caroline Forster, April 2004 - February 2005: |
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| 30 | ! convmix called every lsynctime seconds |
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| 31 | !CHANGES by A. Stohl: |
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| 32 | ! various run-time optimizations - February 2005 |
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| 33 | !CHANGES by C. Forster, November 2005, NCEP GFS version |
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| 34 | ! in the ECMWF version convection is calculated on the |
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| 35 | ! original eta-levels |
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| 36 | ! in the GFS version convection is calculated on the |
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| 37 | ! FLEXPART levels |
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| 38 | !************************************************************** |
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| 39 | |
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| 40 | use par_mod |
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| 41 | use com_mod |
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| 42 | use conv_mod |
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| 43 | |
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| 44 | implicit none |
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| 45 | |
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| 46 | integer :: igr,igrold, ipart, itime, ix, j, inest |
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| 47 | integer :: ipconv |
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| 48 | integer :: jy, kpart, ktop, ngrid,kz |
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| 49 | integer :: igrid(maxpart), ipoint(maxpart), igridn(maxpart,maxnests) |
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| 50 | ! itime [s] current time |
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| 51 | ! igrid(maxpart) horizontal grid position of each particle |
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| 52 | ! igridn(maxpart,maxnests) dto. for nested grids |
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| 53 | ! ipoint(maxpart) pointer to access particles according to grid position |
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| 54 | |
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| 55 | logical :: lconv |
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| 56 | real :: x, y, xtn,ytn, ztold, delt |
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| 57 | real :: dt1,dt2,dtt |
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| 58 | integer :: mind1,mind2 |
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| 59 | ! dt1,dt2,dtt,mind1,mind2 variables used for time interpolation |
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| 60 | integer :: itage,nage |
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| 61 | |
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| 62 | !monitoring variables |
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| 63 | !real sumconv,sumall |
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| 64 | |
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| 65 | |
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| 66 | ! Calculate auxiliary variables for time interpolation |
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| 67 | !***************************************************** |
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| 68 | |
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| 69 | dt1=real(itime-memtime(1)) |
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| 70 | dt2=real(memtime(2)-itime) |
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| 71 | dtt=1./(dt1+dt2) |
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| 72 | mind1=memind(1) |
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| 73 | mind2=memind(2) |
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| 74 | delt=real(abs(lsynctime)) |
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| 75 | |
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| 76 | |
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| 77 | lconv = .false. |
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| 78 | |
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| 79 | ! if no particles are present return after initialization |
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| 80 | !******************************************************** |
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| 81 | |
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| 82 | if (numpart.le.0) return |
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| 83 | |
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| 84 | ! Assign igrid and igridn, which are pseudo grid numbers indicating particles |
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| 85 | ! that are outside the part of the grid under consideration |
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| 86 | ! (e.g. particles near the poles or particles in other nests). |
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| 87 | ! Do this for all nests but use only the innermost nest; for all others |
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| 88 | ! igrid shall be -1 |
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| 89 | ! Also, initialize index vector ipoint |
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| 90 | !************************************************************************ |
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| 91 | |
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| 92 | do ipart=1,numpart |
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| 93 | igrid(ipart)=-1 |
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| 94 | do j=numbnests,1,-1 |
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| 95 | igridn(ipart,j)=-1 |
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| 96 | end do |
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| 97 | ipoint(ipart)=ipart |
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| 98 | ! do not consider particles that are (yet) not part of simulation |
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| 99 | if (itra1(ipart).ne.itime) goto 20 |
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| 100 | x = xtra1(ipart) |
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| 101 | y = ytra1(ipart) |
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| 102 | |
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| 103 | ! Determine which nesting level to be used |
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| 104 | !********************************************************** |
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| 105 | |
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| 106 | ngrid=0 |
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| 107 | do j=numbnests,1,-1 |
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| 108 | if ( x.gt.xln(j) .and. x.lt.xrn(j) .and. & |
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| 109 | y.gt.yln(j) .and. y.lt.yrn(j) ) then |
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| 110 | ngrid=j |
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| 111 | goto 23 |
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| 112 | endif |
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| 113 | end do |
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| 114 | 23 continue |
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| 115 | |
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| 116 | ! Determine nested grid coordinates |
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| 117 | !********************************** |
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| 118 | |
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| 119 | if (ngrid.gt.0) then |
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| 120 | ! nested grids |
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| 121 | xtn=(x-xln(ngrid))*xresoln(ngrid) |
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| 122 | ytn=(y-yln(ngrid))*yresoln(ngrid) |
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| 123 | ix=nint(xtn) |
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| 124 | jy=nint(ytn) |
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| 125 | igridn(ipart,ngrid) = 1 + jy*nxn(ngrid) + ix |
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| 126 | else if(ngrid.eq.0) then |
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| 127 | ! mother grid |
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| 128 | ix=nint(x) |
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| 129 | jy=nint(y) |
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| 130 | igrid(ipart) = 1 + jy*nx + ix |
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| 131 | endif |
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| 132 | |
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| 133 | 20 continue |
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| 134 | end do |
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| 135 | |
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| 136 | !sumall = 0. |
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| 137 | !sumconv = 0. |
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| 138 | |
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| 139 | !***************************************************************************** |
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| 140 | ! 1. Now, do everything for the mother domain and, later, for all of the nested domains |
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| 141 | ! While all particles have to be considered for redistribution, the Emanuel convection |
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| 142 | ! scheme only needs to be called once for every grid column where particles are present. |
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| 143 | ! Therefore, particles are sorted according to their grid position. Whenever a new grid |
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| 144 | ! cell is encountered by looping through the sorted particles, the convection scheme is called. |
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| 145 | !***************************************************************************** |
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| 146 | |
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| 147 | ! sort particles according to horizontal position and calculate index vector IPOINT |
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| 148 | |
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| 149 | call sort2(numpart,igrid,ipoint) |
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| 150 | |
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| 151 | ! Now visit all grid columns where particles are present |
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| 152 | ! by going through the sorted particles |
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| 153 | |
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| 154 | igrold = -1 |
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| 155 | do kpart=1,numpart |
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| 156 | igr = igrid(kpart) |
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| 157 | if (igr .eq. -1) goto 50 |
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| 158 | ipart = ipoint(kpart) |
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| 159 | ! sumall = sumall + 1 |
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| 160 | if (igr .ne. igrold) then |
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| 161 | ! we are in a new grid column |
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| 162 | jy = (igr-1)/nx |
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| 163 | ix = igr - jy*nx - 1 |
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| 164 | |
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| 165 | ! Interpolate all meteorological data needed for the convection scheme |
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| 166 | psconv=(ps(ix,jy,1,mind1)*dt2+ps(ix,jy,1,mind2)*dt1)*dtt |
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| 167 | tt2conv=(tt2(ix,jy,1,mind1)*dt2+tt2(ix,jy,1,mind2)*dt1)*dtt |
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| 168 | td2conv=(td2(ix,jy,1,mind1)*dt2+td2(ix,jy,1,mind2)*dt1)*dtt |
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| 169 | !!$ do kz=1,nconvlev+1 !old |
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| 170 | do kz=1,nuvz-1 !bugfix |
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| 171 | pconv(kz)=(pplev(ix,jy,kz,mind1)*dt2+ & |
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| 172 | pplev(ix,jy,kz,mind2)*dt1)*dtt |
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| 173 | tconv(kz)=(tt(ix,jy,kz,mind1)*dt2+ & |
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| 174 | tt(ix,jy,kz,mind2)*dt1)*dtt |
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| 175 | qconv(kz)=(qv(ix,jy,kz,mind1)*dt2+ & |
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| 176 | qv(ix,jy,kz,mind2)*dt1)*dtt |
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| 177 | end do |
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| 178 | |
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| 179 | ! Calculate translocation matrix |
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| 180 | call calcmatrix(lconv,delt,cbaseflux(ix,jy)) |
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| 181 | igrold = igr |
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| 182 | ktop = 0 |
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| 183 | endif |
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| 184 | |
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| 185 | ! treat particle only if column has convection |
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| 186 | if (lconv .eqv. .true.) then |
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| 187 | ! assign new vertical position to particle |
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| 188 | |
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| 189 | ztold=ztra1(ipart) |
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| 190 | call redist(ipart,ktop,ipconv) |
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| 191 | ! if (ipconv.le.0) sumconv = sumconv+1 |
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| 192 | |
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| 193 | ! Calculate the gross fluxes across layer interfaces |
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| 194 | !*************************************************** |
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| 195 | |
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| 196 | if (iflux.eq.1) then |
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| 197 | itage=abs(itra1(ipart)-itramem(ipart)) |
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| 198 | do nage=1,nageclass |
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| 199 | if (itage.lt.lage(nage)) goto 37 |
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| 200 | end do |
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| 201 | 37 continue |
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| 202 | |
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| 203 | if (nage.le.nageclass) & |
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| 204 | call calcfluxes(nage,ipart,real(xtra1(ipart)), & |
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| 205 | real(ytra1(ipart)),ztold) |
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| 206 | endif |
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| 207 | |
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| 208 | endif !(lconv .eqv. .true) |
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| 209 | 50 continue |
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| 210 | end do |
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| 211 | |
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| 212 | |
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| 213 | !***************************************************************************** |
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| 214 | ! 2. Nested domains |
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| 215 | !***************************************************************************** |
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| 216 | |
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| 217 | ! sort particles according to horizontal position and calculate index vector IPOINT |
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| 218 | |
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| 219 | do inest=1,numbnests |
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| 220 | do ipart=1,numpart |
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| 221 | ipoint(ipart)=ipart |
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| 222 | igrid(ipart) = igridn(ipart,inest) |
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| 223 | enddo |
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| 224 | call sort2(numpart,igrid,ipoint) |
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| 225 | |
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| 226 | ! Now visit all grid columns where particles are present |
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| 227 | ! by going through the sorted particles |
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| 228 | |
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| 229 | igrold = -1 |
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| 230 | do kpart=1,numpart |
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| 231 | igr = igrid(kpart) |
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| 232 | if (igr .eq. -1) goto 60 |
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| 233 | ipart = ipoint(kpart) |
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| 234 | ! sumall = sumall + 1 |
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| 235 | if (igr .ne. igrold) then |
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| 236 | ! we are in a new grid column |
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| 237 | jy = (igr-1)/nxn(inest) |
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| 238 | ix = igr - jy*nxn(inest) - 1 |
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| 239 | |
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| 240 | ! Interpolate all meteorological data needed for the convection scheme |
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| 241 | psconv=(psn(ix,jy,1,mind1,inest)*dt2+ & |
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| 242 | psn(ix,jy,1,mind2,inest)*dt1)*dtt |
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| 243 | tt2conv=(tt2n(ix,jy,1,mind1,inest)*dt2+ & |
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| 244 | tt2n(ix,jy,1,mind2,inest)*dt1)*dtt |
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| 245 | td2conv=(td2n(ix,jy,1,mind1,inest)*dt2+ & |
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| 246 | td2n(ix,jy,1,mind2,inest)*dt1)*dtt |
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| 247 | !!$ do kz=1,nconvlev+1 !old |
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| 248 | do kz=1,nuvz-1 !bugfix |
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| 249 | tconv(kz)=(tthn(ix,jy,kz+1,mind1,inest)*dt2+ & |
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| 250 | tthn(ix,jy,kz+1,mind2,inest)*dt1)*dtt |
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| 251 | qconv(kz)=(qvhn(ix,jy,kz+1,mind1,inest)*dt2+ & |
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| 252 | qvhn(ix,jy,kz+1,mind2,inest)*dt1)*dtt |
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| 253 | end do |
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| 254 | |
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| 255 | ! calculate translocation matrix |
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| 256 | !******************************* |
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| 257 | call calcmatrix(lconv,delt,cbasefluxn(ix,jy,inest)) |
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| 258 | igrold = igr |
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| 259 | ktop = 0 |
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| 260 | endif |
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| 261 | |
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| 262 | ! treat particle only if column has convection |
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| 263 | if (lconv .eqv. .true.) then |
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| 264 | ! assign new vertical position to particle |
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| 265 | ztold=ztra1(ipart) |
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| 266 | call redist(ipart,ktop,ipconv) |
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| 267 | ! if (ipconv.le.0) sumconv = sumconv+1 |
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| 268 | |
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| 269 | ! Calculate the gross fluxes across layer interfaces |
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| 270 | !*************************************************** |
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| 271 | |
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| 272 | if (iflux.eq.1) then |
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| 273 | itage=abs(itra1(ipart)-itramem(ipart)) |
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| 274 | do nage=1,nageclass |
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| 275 | if (itage.lt.lage(nage)) goto 47 |
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| 276 | end do |
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| 277 | 47 continue |
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| 278 | |
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| 279 | if (nage.le.nageclass) & |
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| 280 | call calcfluxes(nage,ipart,real(xtra1(ipart)), & |
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| 281 | real(ytra1(ipart)),ztold) |
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| 282 | endif |
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| 283 | |
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| 284 | endif !(lconv .eqv. .true.) |
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| 285 | |
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| 286 | |
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| 287 | 60 continue |
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| 288 | end do |
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| 289 | end do |
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| 290 | !-------------------------------------------------------------------------- |
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| 291 | !write(*,*)'############################################' |
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| 292 | !write(*,*)'TIME=', |
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| 293 | ! & itime |
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| 294 | !write(*,*)'fraction of particles under convection', |
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| 295 | ! & sumconv/(sumall+0.001) |
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| 296 | !write(*,*)'total number of particles', |
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| 297 | ! & sumall |
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| 298 | !write(*,*)'number of particles under convection', |
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| 299 | ! & sumconv |
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| 300 | !write(*,*)'############################################' |
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| 301 | |
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| 302 | return |
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| 303 | end subroutine convmix |
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