1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
|
!**********************************************************************
! Copyright 1998,1999,2000,2001,2002,2005,2007,2008,2009,2010 *
! Andreas Stohl, Petra Seibert, A. Frank, Gerhard Wotawa, *
! Caroline Forster, Sabine Eckhardt, John Burkhart, Harald Sodemann *
! *
! This file is part of FLEXPART. *
! *
! FLEXPART is free software: you can redistribute it and/or modify *
! it under the terms of the GNU General Public License as published by*
! the Free Software Foundation, either version 3 of the License, or *
! (at your option) any later version. *
! *
! FLEXPART is distributed in the hope that it will be useful, *
! but WITHOUT ANY WARRANTY; without even the implied warranty of *
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
! GNU General Public License for more details. *
! *
! You should have received a copy of the GNU General Public License *
! along with FLEXPART. If not, see <http://www.gnu.org/licenses/>. *
!**********************************************************************
subroutine convmix(itime)
! i
!**************************************************************
!handles all the calculations related to convective mixing
!Petra Seibert, Bernd C. Krueger, Feb 2001
!nested grids included, Bernd C. Krueger, May 2001
!
!Changes by Caroline Forster, April 2004 - February 2005:
! convmix called every lsynctime seconds
!CHANGES by A. Stohl:
! various run-time optimizations - February 2005
!**************************************************************
use flux_mod
use par_mod
use com_mod
use conv_mod
implicit none
integer :: igr,igrold, ipart, itime, ix, j, inest
integer :: ipconv
integer :: jy, kpart, ktop, ngrid,kz
integer :: igrid(maxpart), ipoint(maxpart), igridn(maxpart,maxnests)
! itime [s] current time
! igrid(maxpart) horizontal grid position of each particle
! igridn(maxpart,maxnests) dto. for nested grids
! ipoint(maxpart) pointer to access particles according to grid position
logical :: lconv
real :: x, y, xtn,ytn, ztold, delt
real :: dt1,dt2,dtt
integer :: mind1,mind2
! dt1,dt2,dtt,mind1,mind2 variables used for time interpolation
integer :: itage,nage
real,parameter :: eps=nxmax/3.e5
!monitoring variables
!real sumconv,sumall
! Calculate auxiliary variables for time interpolation
!*****************************************************
dt1=real(itime-memtime(1))
dt2=real(memtime(2)-itime)
dtt=1./(dt1+dt2)
mind1=memind(1)
mind2=memind(2)
delt=real(abs(lsynctime))
lconv = .false.
! if no particles are present return after initialization
!********************************************************
if (numpart.le.0) return
! Assign igrid and igridn, which are pseudo grid numbers indicating particles
! that are outside the part of the grid under consideration
! (e.g. particles near the poles or particles in other nests).
! Do this for all nests but use only the innermost nest; for all others
! igrid shall be -1
! Also, initialize index vector ipoint
!************************************************************************
do ipart=1,numpart
igrid(ipart)=-1
do j=numbnests,1,-1
igridn(ipart,j)=-1
end do
ipoint(ipart)=ipart
! do not consider particles that are (yet) not part of simulation
if (itra1(ipart).ne.itime) goto 20
x = xtra1(ipart)
y = ytra1(ipart)
! Determine which nesting level to be used
!**********************************************************
ngrid=0
do j=numbnests,1,-1
if ( x.gt.xln(j)+eps .and. x.lt.xrn(j)-eps .and. &
y.gt.yln(j)+eps .and. y.lt.yrn(j)-eps ) then
ngrid=j
goto 23
endif
end do
23 continue
! Determine nested grid coordinates
!**********************************
if (ngrid.gt.0) then
! nested grids
xtn=(x-xln(ngrid))*xresoln(ngrid)
ytn=(y-yln(ngrid))*yresoln(ngrid)
ix=nint(xtn)
jy=nint(ytn)
igridn(ipart,ngrid) = 1 + jy*nxn(ngrid) + ix
else if(ngrid.eq.0) then
! mother grid
ix=nint(x)
jy=nint(y)
igrid(ipart) = 1 + jy*nx + ix
endif
20 continue
end do
!sumall = 0.
!sumconv = 0.
!*****************************************************************************
! 1. Now, do everything for the mother domain and, later, for all of the nested domains
! While all particles have to be considered for redistribution, the Emanuel convection
! scheme only needs to be called once for every grid column where particles are present.
! Therefore, particles are sorted according to their grid position. Whenever a new grid
! cell is encountered by looping through the sorted particles, the convection scheme is called.
!*****************************************************************************
! sort particles according to horizontal position and calculate index vector IPOINT
call sort2(numpart,igrid,ipoint)
! Now visit all grid columns where particles are present
! by going through the sorted particles
igrold = -1
do kpart=1,numpart
igr = igrid(kpart)
if (igr .eq. -1) goto 50
ipart = ipoint(kpart)
! sumall = sumall + 1
if (igr .ne. igrold) then
! we are in a new grid column
jy = (igr-1)/nx
ix = igr - jy*nx - 1
! Interpolate all meteorological data needed for the convection scheme
psconv=(ps(ix,jy,1,mind1)*dt2+ps(ix,jy,1,mind2)*dt1)*dtt
tt2conv=(tt2(ix,jy,1,mind1)*dt2+tt2(ix,jy,1,mind2)*dt1)*dtt
td2conv=(td2(ix,jy,1,mind1)*dt2+td2(ix,jy,1,mind2)*dt1)*dtt
!!$ do kz=1,nconvlev+1 !old
do kz=1,nuvz-1 !bugfix
tconv(kz)=(tth(ix,jy,kz+1,mind1)*dt2+ &
tth(ix,jy,kz+1,mind2)*dt1)*dtt
qconv(kz)=(qvh(ix,jy,kz+1,mind1)*dt2+ &
qvh(ix,jy,kz+1,mind2)*dt1)*dtt
end do
! Calculate translocation matrix
call calcmatrix(lconv,delt,cbaseflux(ix,jy))
igrold = igr
ktop = 0
endif
! treat particle only if column has convection
if (lconv .eqv. .true.) then
! assign new vertical position to particle
ztold=ztra1(ipart)
call redist(ipart,ktop,ipconv)
! if (ipconv.le.0) sumconv = sumconv+1
! Calculate the gross fluxes across layer interfaces
!***************************************************
if (iflux.eq.1) then
itage=abs(itra1(ipart)-itramem(ipart))
do nage=1,nageclass
if (itage.lt.lage(nage)) goto 37
end do
37 continue
if (nage.le.nageclass) &
call calcfluxes(nage,ipart,real(xtra1(ipart)), &
real(ytra1(ipart)),ztold)
endif
endif !(lconv .eqv. .true)
50 continue
end do
!*****************************************************************************
! 2. Nested domains
!*****************************************************************************
! sort particles according to horizontal position and calculate index vector IPOINT
do inest=1,numbnests
do ipart=1,numpart
ipoint(ipart)=ipart
igrid(ipart) = igridn(ipart,inest)
enddo
call sort2(numpart,igrid,ipoint)
! Now visit all grid columns where particles are present
! by going through the sorted particles
igrold = -1
do kpart=1,numpart
igr = igrid(kpart)
if (igr .eq. -1) goto 60
ipart = ipoint(kpart)
! sumall = sumall + 1
if (igr .ne. igrold) then
! we are in a new grid column
jy = (igr-1)/nxn(inest)
ix = igr - jy*nxn(inest) - 1
! Interpolate all meteorological data needed for the convection scheme
psconv=(psn(ix,jy,1,mind1,inest)*dt2+ &
psn(ix,jy,1,mind2,inest)*dt1)*dtt
tt2conv=(tt2n(ix,jy,1,mind1,inest)*dt2+ &
tt2n(ix,jy,1,mind2,inest)*dt1)*dtt
td2conv=(td2n(ix,jy,1,mind1,inest)*dt2+ &
td2n(ix,jy,1,mind2,inest)*dt1)*dtt
!!$ do kz=1,nconvlev+1 !old
do kz=1,nuvz-1 !bugfix
tconv(kz)=(tthn(ix,jy,kz+1,mind1,inest)*dt2+ &
tthn(ix,jy,kz+1,mind2,inest)*dt1)*dtt
qconv(kz)=(qvhn(ix,jy,kz+1,mind1,inest)*dt2+ &
qvhn(ix,jy,kz+1,mind2,inest)*dt1)*dtt
end do
! calculate translocation matrix
!*******************************
call calcmatrix(lconv,delt,cbasefluxn(ix,jy,inest))
igrold = igr
ktop = 0
endif
! treat particle only if column has convection
if (lconv .eqv. .true.) then
! assign new vertical position to particle
ztold=ztra1(ipart)
call redist(ipart,ktop,ipconv)
! if (ipconv.le.0) sumconv = sumconv+1
! Calculate the gross fluxes across layer interfaces
!***************************************************
if (iflux.eq.1) then
itage=abs(itra1(ipart)-itramem(ipart))
do nage=1,nageclass
if (itage.lt.lage(nage)) goto 47
end do
47 continue
if (nage.le.nageclass) &
call calcfluxes(nage,ipart,real(xtra1(ipart)), &
real(ytra1(ipart)),ztold)
endif
endif !(lconv .eqv. .true.)
60 continue
end do
end do
!--------------------------------------------------------------------------
!write(*,*)'############################################'
!write(*,*)'TIME=',
! & itime
!write(*,*)'fraction of particles under convection',
! & sumconv/(sumall+0.001)
!write(*,*)'total number of particles',
! & sumall
!write(*,*)'number of particles under convection',
! & sumconv
!write(*,*)'############################################'
return
end subroutine convmix
|
