| 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 | !************************************************************** |
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| 34 | |
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| 35 | use par_mod, only: nxmax, maxpart, maxnests |
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| 36 | |
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| 37 | use com_mod, only: iflux, xresoln, xln, xrn, yln, yrn, tt2, ps, itra1, & |
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| 38 | nxn, nyn, xtra1, ytra1, itramem, ztra1, lage, qvh, tth, td2, qvhn, & |
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| 39 | tthn, td2n, tt2n, psn, path, yresoln, memind, memtime, nx, ny, numpart, & |
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| 40 | nageclass, nuvz, numbnests, lsynctime |
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| 41 | |
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| 42 | use conv_mod, only: tconv, qconv, pconv, nconvlev, psconv, & |
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| 43 | td2conv, tt2conv, cbaseflux, cbasefluxn,fmassfrac, nconvtop |
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| 44 | |
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| 45 | use random_mod, only: ran3, ran3_conv, idummy_ran3_conv |
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| 46 | |
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| 47 | use omp_lib, only: OMP_GET_THREAD_NUM |
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| 48 | |
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| 49 | implicit none |
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| 50 | |
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| 51 | integer :: igr,igrold, ipart, itime, ix, j, inest |
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| 52 | integer :: ipconv |
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| 53 | integer :: jy, kpart, ktop, ngrid,kz |
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| 54 | integer,allocatable,dimension(:) :: igrid, ipoint |
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| 55 | integer,allocatable,dimension(:,:) :: igridn |
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| 56 | ! itime [s] current time |
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| 57 | ! igrid(maxpart) horizontal grid position of each particle |
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| 58 | ! igridn(maxpart,maxnests) dto. for nested grids |
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| 59 | ! ipoint(maxpart) pointer to access particles according to grid position |
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| 60 | |
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| 61 | logical :: lconv |
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| 62 | real :: x, y, xtn,ytn, ztold, delt |
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| 63 | real :: dt1,dt2,dtt |
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| 64 | integer :: mind1,mind2 |
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| 65 | ! dt1,dt2,dtt,mind1,mind2 variables used for time interpolation |
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| 66 | integer :: itage,nage |
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| 67 | real,parameter :: eps=nxmax/3.e5 |
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| 68 | integer, allocatable, dimension(:) :: frst |
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| 69 | integer :: cnt, stat, kk |
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| 70 | ! for debugging, remove again |
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| 71 | ! character(len=255) :: fn |
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| 72 | ! integer :: thread |
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| 73 | ! integer :: sumconv |
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| 74 | |
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| 75 | ! allocate local variables on the heap |
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| 76 | allocate(igrid(maxpart),stat=stat) |
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| 77 | allocate(ipoint(maxpart),stat=stat) |
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| 78 | allocate(igridn(maxpart,maxnests),stat=stat) |
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| 79 | |
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| 80 | !monitoring variables |
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| 81 | !real sumconv,sumall |
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| 82 | |
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| 83 | |
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| 84 | ! Calculate auxiliary variables for time interpolation |
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| 85 | !***************************************************** |
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| 86 | |
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| 87 | dt1=real(itime-memtime(1)) |
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| 88 | dt2=real(memtime(2)-itime) |
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| 89 | dtt=1./(dt1+dt2) |
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| 90 | mind1=memind(1) |
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| 91 | mind2=memind(2) |
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| 92 | delt=real(abs(lsynctime)) |
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| 93 | |
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| 94 | |
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| 95 | lconv = .false. |
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| 96 | |
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| 97 | ! if no particles are present return after initialization |
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| 98 | !******************************************************** |
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| 99 | |
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| 100 | if (numpart.le.0) return |
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| 101 | |
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| 102 | ! Assign igrid and igridn, which are pseudo grid numbers indicating particles |
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| 103 | ! that are outside the part of the grid under consideration |
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| 104 | ! (e.g. particles near the poles or particles in other nests). |
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| 105 | ! Do this for all nests but use only the innermost nest; for all others |
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| 106 | ! igrid shall be -1 |
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| 107 | ! Also, initialize index vector ipoint |
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| 108 | !************************************************************************ |
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| 109 | |
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| 110 | !$OMP PARALLEL DEFAULT(none) & |
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| 111 | !$OMP PRIVATE(ipart, x, y, j, ngrid, xtn, ytn, ix, jy) & |
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| 112 | !$OMP SHARED(numpart, igrid, igridn, ipoint, itra1, itime, numbnests, & |
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| 113 | !$OMP xln, yln, xrn, yrn, xresoln, yresoln, xtra1, ytra1, nxn, nx) |
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| 114 | |
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| 115 | #if (defined STATIC_SCHED) |
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| 116 | !$OMP DO SCHEDULE(static) |
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| 117 | #else |
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| 118 | !$OMP DO SCHEDULE(dynamic, max(1,numpart/1000)) |
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| 119 | #endif |
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| 120 | |
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| 121 | do ipart=1,numpart |
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| 122 | igrid(ipart)=-1 |
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| 123 | do j=numbnests,1,-1 |
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| 124 | igridn(ipart,j)=-1 |
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| 125 | end do |
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| 126 | ipoint(ipart)=ipart |
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| 127 | ! do not consider particles that are (yet) not part of simulation |
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| 128 | if (itra1(ipart).ne.itime) cycle |
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| 129 | |
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| 130 | x = real(xtra1(ipart)) |
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| 131 | y = real(ytra1(ipart)) |
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| 132 | |
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| 133 | ! Determine which nesting level to be used |
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| 134 | !********************************************************** |
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| 135 | |
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| 136 | ngrid=0 |
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| 137 | do j=numbnests,1,-1 |
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| 138 | if ( x.gt.xln(j)+eps .and. x.lt.xrn(j)-eps .and. & |
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| 139 | y.gt.yln(j)+eps .and. y.lt.yrn(j)-eps ) then |
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| 140 | ngrid=j |
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| 141 | exit |
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| 142 | endif |
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| 143 | end do |
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| 144 | |
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| 145 | ! Determine nested grid coordinates |
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| 146 | !********************************** |
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| 147 | |
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| 148 | if (ngrid.gt.0) then |
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| 149 | ! nested grids |
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| 150 | xtn=(x-xln(ngrid))*xresoln(ngrid) |
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| 151 | ytn=(y-yln(ngrid))*yresoln(ngrid) |
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| 152 | ix=nint(xtn) |
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| 153 | jy=nint(ytn) |
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| 154 | igridn(ipart,ngrid) = 1 + jy*nxn(ngrid) + ix |
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| 155 | else if(ngrid.eq.0) then |
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| 156 | ! mother grid |
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| 157 | ix=nint(x) |
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| 158 | jy=nint(y) |
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| 159 | igrid(ipart) = 1 + jy*nx + ix |
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| 160 | endif |
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| 161 | |
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| 162 | end do |
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| 163 | !$OMP END DO |
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| 164 | !$OMP END PARALLEL |
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| 165 | |
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| 166 | !sumall = 0. |
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| 167 | !sumconv = 0. |
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| 168 | !***************************************************************************** |
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| 169 | ! 1. Now, do everything for the mother domain and, later, for all of the nested domains |
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| 170 | ! While all particles have to be considered for redistribution, the Emanuel convection |
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| 171 | ! scheme only needs to be called once for every grid column where particles are present. |
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| 172 | ! Therefore, particles are sorted according to their grid position. Whenever a new grid |
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| 173 | ! cell is encountered by looping through the sorted particles, the convection scheme is called. |
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| 174 | !***************************************************************************** |
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| 175 | |
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| 176 | ! sort particles according to horizontal position and calculate index vector IPOINT |
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| 177 | |
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| 178 | call sort2(numpart,igrid,ipoint) |
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| 179 | |
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| 180 | ! determine index where new grid cell starts |
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| 181 | ! by this also selecting grid cells where particles are present |
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| 182 | allocate(frst(nx*ny), stat=stat) |
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| 183 | if (stat.ne.0) write(*,*) "ERROR: could not allocate frst" |
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| 184 | |
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| 185 | cnt = 1 |
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| 186 | igrold = -1 |
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| 187 | do kpart=1,numpart |
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| 188 | |
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| 189 | if (igrold.ne.igrid(kpart)) then |
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| 190 | frst(cnt) = kpart |
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| 191 | igrold=igrid(kpart) |
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| 192 | cnt=cnt+1 |
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| 193 | endif |
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| 194 | enddo |
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| 195 | frst(cnt) = numpart+1 |
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| 196 | ! if all particles in nested grids cnt will be 1 otherwise >1 |
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| 197 | |
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| 198 | do kpart=1, numpart |
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| 199 | ! get random number outside parallel region |
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| 200 | ! (not necessary to do again for nested domains, because each particle is only treated once) |
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| 201 | if (itra1(kpart).eq.itime) then |
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| 202 | ran3_conv(kpart) = ran3(idummy_ran3_conv) |
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| 203 | endif |
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| 204 | end do |
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| 205 | |
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| 206 | ! Loop over grid columns with particles |
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| 207 | if (cnt.gt.1) then ! any particles in non-nested areas? |
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| 208 | |
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| 209 | |
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| 210 | !$OMP PARALLEL DEFAULT (none) & |
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| 211 | !$OMP PRIVATE(kk,jy,ix,kz, ktop, lconv, kpart, ipart, ztold, & |
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| 212 | !$OMP nage, ipconv, itage) & |
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| 213 | !$OMP SHARED(cnt, cbaseflux, frst, igrid, nx, mind1, mind2, ps, & |
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| 214 | !$OMP tt2, td2, tth, qvh, dt1, dt2, dtt, nuvz, delt, ipoint, & |
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| 215 | !$OMP iflux, itra1, itramem, nageclass, lage, xtra1, ytra1, ztra1) |
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| 216 | |
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| 217 | ! #if (defined _OPENMP) |
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| 218 | ! thread = OMP_GET_THREAD_NUM() |
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| 219 | ! #endif |
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| 220 | |
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| 221 | #if (defined STATIC_SCHED) |
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| 222 | !$OMP DO SCHEDULE(static) |
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| 223 | #else |
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| 224 | !$OMP DO SCHEDULE(dynamic) ! using default chunck sizes |
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| 225 | #endif |
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| 226 | do kk=1,cnt-1 ! loop through grid columns |
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| 227 | |
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| 228 | ! mother grid cell in nested domain, don't calculate convection |
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| 229 | if (igrid(frst(kk)) .eq. -1) cycle |
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| 230 | |
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| 231 | jy = (igrid(frst(kk))-1)/nx |
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| 232 | ix = igrid(frst(kk)) - jy*nx - 1 |
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| 233 | |
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| 234 | ! Interpolate all meteorological data needed for the convection scheme |
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| 235 | psconv=(ps(ix,jy,1,mind1)*dt2+ps(ix,jy,1,mind2)*dt1)*dtt |
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| 236 | tt2conv=(tt2(ix,jy,1,mind1)*dt2+tt2(ix,jy,1,mind2)*dt1)*dtt |
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| 237 | td2conv=(td2(ix,jy,1,mind1)*dt2+td2(ix,jy,1,mind2)*dt1)*dtt |
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| 238 | !!$ do kz=1,nconvlev+1 !old |
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| 239 | do kz=1,nuvz-1 !bugfix |
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| 240 | tconv(kz)=(tth(ix,jy,kz+1,mind1)*dt2+ & |
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| 241 | tth(ix,jy,kz+1,mind2)*dt1)*dtt |
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| 242 | qconv(kz)=(qvh(ix,jy,kz+1,mind1)*dt2+ & |
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| 243 | qvh(ix,jy,kz+1,mind2)*dt1)*dtt |
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| 244 | end do |
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| 245 | |
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| 246 | ! Calculate translocation matrix |
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| 247 | call calcmatrix(lconv,delt,cbaseflux(ix,jy)) |
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| 248 | |
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| 249 | ! treat column only if column has convection |
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| 250 | if (lconv) then |
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| 251 | ktop = 0 |
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| 252 | ! sumconv = 0 |
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| 253 | ! assign new vertical position to particle |
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| 254 | do kpart=frst(kk),frst(kk+1)-1 |
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| 255 | ipart = ipoint(kpart) |
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| 256 | ztold=ztra1(ipart) |
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| 257 | call redist(ipart,ktop,ipconv) |
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| 258 | |
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| 259 | ! if (ipconv.le.0) sumconv = sumconv+1 |
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| 260 | |
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| 261 | ! Calculate the gross fluxes across layer interfaces |
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| 262 | !*************************************************** |
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| 263 | |
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| 264 | if (iflux.eq.1) then |
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| 265 | itage=abs(itra1(ipart)-itramem(ipart)) |
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| 266 | do nage=1,nageclass |
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| 267 | if (itage.lt.lage(nage)) exit |
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| 268 | end do |
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| 269 | |
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| 270 | if (nage.le.nageclass) then |
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| 271 | call calcfluxes(nage,ipart,real(xtra1(ipart)), & |
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| 272 | real(ytra1(ipart)),ztold) |
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| 273 | end if |
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| 274 | end if ! flux calculation |
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| 275 | end do ! particles in column |
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| 276 | ! write(*,*) "convmix:", thread, igrid(frst(kk)), cbaseflux(ix,jy), sumconv |
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| 277 | end if ! convection present |
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| 278 | end do ! grid cell loop |
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| 279 | !$OMP END DO |
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| 280 | !$OMP END PARALLEL |
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| 281 | end if ! particles in non-nested areas |
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| 282 | |
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| 283 | deallocate(frst) |
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| 284 | |
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| 285 | ! write(fn, '(A,A,I6.6)') trim(path(2)), 'cbaseflux_', itime |
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| 286 | ! call dump_field(fn, cbaseflux(0:nx-1, 0:ny-1), nx, ny, 1) |
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| 287 | |
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| 288 | |
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| 289 | !***************************************************************************** |
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| 290 | ! 2. Nested domains |
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| 291 | !***************************************************************************** |
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| 292 | |
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| 293 | nestloop : do inest=1,numbnests |
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| 294 | |
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| 295 | ! sort particles according to horizontal position and calculate index vector IPOINT |
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| 296 | do ipart=1,numpart |
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| 297 | ipoint(ipart)=ipart |
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| 298 | igrid(ipart) = igridn(ipart,inest) |
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| 299 | enddo |
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| 300 | call sort2(numpart,igrid,ipoint) |
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| 301 | |
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| 302 | ! determine particle index where new grid cell starts |
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| 303 | ! by this also selecting grid cells where particles are present |
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| 304 | allocate(frst(nxn(inest)*nyn(inest)), stat=stat) |
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| 305 | if (stat.ne.0) write(*,*) "ERROR: could not allocate frst" |
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| 306 | |
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| 307 | cnt = 1 |
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| 308 | igrold = -1 |
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| 309 | do kpart=1,numpart |
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| 310 | if (igrold.ne.igrid(kpart)) then |
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| 311 | frst(cnt) = kpart |
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| 312 | igrold=igrid(kpart) |
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| 313 | cnt=cnt+1 |
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| 314 | endif |
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| 315 | enddo |
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| 316 | frst(cnt) = numpart+1 |
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| 317 | ! if all particles in nested grids cnt will be 1 otherwise >1 |
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| 318 | |
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| 319 | if (cnt.gt.1) then ! any particles in nested areas? |
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| 320 | |
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| 321 | !$OMP PARALLEL DEFAULT(none) & |
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| 322 | !$OMP PRIVATE(kk,jy,ix,kz, ktop, lconv, kpart, ipart, ztold, & |
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| 323 | !$OMP nage, ipconv, itage) & |
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| 324 | !$OMP SHARED(cnt, cbasefluxn, frst, igrid, nxn, mind1, mind2, psn, & |
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| 325 | !$OMP tt2n, td2n, tthn, qvhn, dt1, dt2, dtt, nuvz, delt, ipoint, & |
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| 326 | !$OMP iflux, itra1, itramem, nageclass, lage, xtra1, ytra1, ztra1, & |
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| 327 | !$OMP inest) |
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| 328 | |
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| 329 | #if (defined STATIC_SCHED) |
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| 330 | !$OMP DO SCHEDULE(static) |
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| 331 | #else |
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| 332 | !$OMP DO SCHEDULE(dynamic) ! using default chunck sizes |
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| 333 | #endif |
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| 334 | do kk=1,cnt-1 ! loop through grid columns |
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| 335 | |
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| 336 | jy = (igrid(frst(kk))-1)/nxn(inest) |
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| 337 | ix = igrid(frst(kk)) - jy*nxn(inest) - 1 |
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| 338 | |
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| 339 | ! Interpolate all meteorological data needed for the convection scheme |
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| 340 | psconv=(psn(ix,jy,1,mind1,inest)*dt2+ & |
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| 341 | psn(ix,jy,1,mind2,inest)*dt1)*dtt |
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| 342 | tt2conv=(tt2n(ix,jy,1,mind1,inest)*dt2+ & |
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| 343 | tt2n(ix,jy,1,mind2,inest)*dt1)*dtt |
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| 344 | td2conv=(td2n(ix,jy,1,mind1,inest)*dt2+ & |
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| 345 | td2n(ix,jy,1,mind2,inest)*dt1)*dtt |
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| 346 | !!$ do kz=1,nconvlev+1 !old |
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| 347 | do kz=1,nuvz-1 !bugfix |
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| 348 | tconv(kz)=(tthn(ix,jy,kz+1,mind1,inest)*dt2+ & |
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| 349 | tthn(ix,jy,kz+1,mind2,inest)*dt1)*dtt |
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| 350 | qconv(kz)=(qvhn(ix,jy,kz+1,mind1,inest)*dt2+ & |
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| 351 | qvhn(ix,jy,kz+1,mind2,inest)*dt1)*dtt |
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| 352 | end do |
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| 353 | |
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| 354 | ! calculate translocation matrix |
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| 355 | !******************************* |
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| 356 | call calcmatrix(lconv,delt,cbasefluxn(ix,jy,inest)) |
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| 357 | |
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| 358 | ! treat particle only if column has convection |
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| 359 | if (lconv) then |
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| 360 | ktop = 0 |
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| 361 | do kpart=frst(kk), frst(kk+1)-1 |
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| 362 | ! assign new vertical position to particle |
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| 363 | ipart = ipoint(kpart) |
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| 364 | ztold=ztra1(ipart) |
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| 365 | call redist(ipart,ktop,ipconv) |
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| 366 | ! if (ipconv.le.0) sumconv = sumconv+1 |
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| 367 | |
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| 368 | ! Calculate the gross fluxes across layer interfaces |
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| 369 | !*************************************************** |
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| 370 | |
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| 371 | if (iflux.eq.1) then |
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| 372 | itage=abs(itra1(ipart)-itramem(ipart)) |
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| 373 | do nage=1,nageclass |
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| 374 | if (itage.lt.lage(nage)) exit |
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| 375 | end do |
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| 376 | |
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| 377 | if (nage.le.nageclass) then |
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| 378 | call calcfluxes(nage,ipart,real(xtra1(ipart)), & |
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| 379 | real(ytra1(ipart)),ztold) |
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| 380 | end if |
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| 381 | end if ! flux calculation |
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| 382 | |
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| 383 | end do ! particles in colum |
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| 384 | end if !(lconv .eqv. .true.) |
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| 385 | end do ! grid cell loop |
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| 386 | !$OMP END DO |
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| 387 | !$OMP END PARALLEL |
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| 388 | end if ! any particles in nest |
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| 389 | deallocate(frst) |
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| 390 | end do nestloop |
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| 391 | |
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| 392 | !-------------------------------------------------------------------------- |
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| 393 | !write(*,*)'############################################' |
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| 394 | !write(*,*)'TIME=', |
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| 395 | ! & itime |
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| 396 | !write(*,*)'fraction of particles under convection', |
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| 397 | ! & sumconv/(sumall+0.001) |
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| 398 | !write(*,*)'total number of particles', |
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| 399 | ! & sumall |
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| 400 | !write(*,*)'number of particles under convection', |
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| 401 | ! & sumconv |
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| 402 | !write(*,*)'############################################' |
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| 403 | |
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| 404 | deallocate(igrid) |
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| 405 | deallocate(ipoint) |
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| 406 | deallocate(igridn) |
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| 407 | |
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| 408 | return |
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| 409 | end subroutine convmix |
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