1 | ! SPDX-FileCopyrightText: FLEXPART 1998-2019, see flexpart_license.txt |
---|
2 | ! SPDX-License-Identifier: GPL-3.0-or-later |
---|
3 | |
---|
4 | subroutine getfields(itime,nstop,metdata_format) |
---|
5 | ! i o |
---|
6 | !***************************************************************************** |
---|
7 | ! * |
---|
8 | ! This subroutine manages the 3 data fields to be kept in memory. * |
---|
9 | ! During the first time step of petterssen it has to be fulfilled that the * |
---|
10 | ! first data field must have |wftime|<itime, i.e. the absolute value of * |
---|
11 | ! wftime must be smaller than the absolute value of the current time in [s].* |
---|
12 | ! The other 2 fields are the next in time after the first one. * |
---|
13 | ! Pointers (memind) are used, because otherwise one would have to resort the* |
---|
14 | ! wind fields, which costs a lot of computing time. Here only the pointers * |
---|
15 | ! are resorted. * |
---|
16 | ! * |
---|
17 | ! Author: A. Stohl * |
---|
18 | ! * |
---|
19 | ! 29 April 1994 * |
---|
20 | ! * |
---|
21 | !***************************************************************************** |
---|
22 | ! Changes, Bernd C. Krueger, Feb. 2001: * |
---|
23 | ! Variables tth,qvh,tthn,qvhn (on eta coordinates) in common block. * |
---|
24 | ! Function of nstop extended. * |
---|
25 | ! * |
---|
26 | ! Unified ECMWF and GFS builds * |
---|
27 | ! Marian Harustak, 12.5.2017 * |
---|
28 | ! - Added passing of metdata_format as it was needed by called routines * |
---|
29 | !***************************************************************************** |
---|
30 | ! * |
---|
31 | ! Variables: * |
---|
32 | ! lwindinterval [s] time difference between the two wind fields read in * |
---|
33 | ! indj indicates the number of the wind field to be read in * |
---|
34 | ! indmin remembers the number of wind fields already treated * |
---|
35 | ! memind(2) pointer, on which place the wind fields are stored * |
---|
36 | ! memtime(2) [s] times of the wind fields, which are kept in memory * |
---|
37 | ! itime [s] current time since start date of trajectory calcu- * |
---|
38 | ! lation * |
---|
39 | ! nstop > 0, if trajectory has to be terminated * |
---|
40 | ! nx,ny,nuvz,nwz field dimensions in x,y and z direction * |
---|
41 | ! uu(0:nxmax,0:nymax,nuvzmax,2) wind components in x-direction [m/s] * |
---|
42 | ! vv(0:nxmax,0:nymax,nuvzmax,2) wind components in y-direction [m/s] * |
---|
43 | ! ww(0:nxmax,0:nymax,nwzmax,2) wind components in z-direction [deltaeta/s]* |
---|
44 | ! tt(0:nxmax,0:nymax,nuvzmax,2) temperature [K] * |
---|
45 | ! ps(0:nxmax,0:nymax,2) surface pressure [Pa] * |
---|
46 | ! metdata_format format of metdata (ecmwf/gfs) * |
---|
47 | ! * |
---|
48 | ! Constants: * |
---|
49 | ! idiffmax maximum allowable time difference between 2 wind * |
---|
50 | ! fields * |
---|
51 | ! * |
---|
52 | !***************************************************************************** |
---|
53 | |
---|
54 | use par_mod |
---|
55 | use com_mod |
---|
56 | use class_gribfile |
---|
57 | |
---|
58 | implicit none |
---|
59 | |
---|
60 | integer :: indj,itime,nstop,memaux |
---|
61 | integer :: metdata_format |
---|
62 | |
---|
63 | real :: uuh(0:nxmax-1,0:nymax-1,nuvzmax) |
---|
64 | real :: vvh(0:nxmax-1,0:nymax-1,nuvzmax) |
---|
65 | real :: pvh(0:nxmax-1,0:nymax-1,nuvzmax) |
---|
66 | real :: wwh(0:nxmax-1,0:nymax-1,nwzmax) |
---|
67 | real :: uuhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
---|
68 | real :: vvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
---|
69 | real :: pvhn(0:nxmaxn-1,0:nymaxn-1,nuvzmax,maxnests) |
---|
70 | real :: wwhn(0:nxmaxn-1,0:nymaxn-1,nwzmax,maxnests) |
---|
71 | ! RLT added partial pressure water vapor |
---|
72 | real :: pwater(0:nxmax-1,0:nymax-1,nzmax,numwfmem) |
---|
73 | integer :: kz, ix |
---|
74 | character(len=100) :: rowfmt |
---|
75 | |
---|
76 | integer :: indmin = 1 |
---|
77 | |
---|
78 | |
---|
79 | ! Check, if wind fields are available for the current time step |
---|
80 | !************************************************************** |
---|
81 | |
---|
82 | nstop=0 |
---|
83 | |
---|
84 | if ((ldirect*wftime(1).gt.ldirect*itime).or. & |
---|
85 | (ldirect*wftime(numbwf).lt.ldirect*itime)) then |
---|
86 | write(*,*) 'FLEXPART WARNING: NO WIND FIELDS ARE AVAILABLE.' |
---|
87 | write(*,*) 'A TRAJECTORY HAS TO BE TERMINATED.' |
---|
88 | nstop=4 |
---|
89 | return |
---|
90 | endif |
---|
91 | |
---|
92 | |
---|
93 | if ((ldirect*memtime(1).le.ldirect*itime).and. & |
---|
94 | (ldirect*memtime(2).gt.ldirect*itime)) then |
---|
95 | |
---|
96 | ! The right wind fields are already in memory -> don't do anything |
---|
97 | !***************************************************************** |
---|
98 | |
---|
99 | continue |
---|
100 | |
---|
101 | else if ((ldirect*memtime(2).le.ldirect*itime).and. & |
---|
102 | (memtime(2).ne.999999999)) then |
---|
103 | |
---|
104 | |
---|
105 | ! Current time is after 2nd wind field |
---|
106 | ! -> Resort wind field pointers, so that current time is between 1st and 2nd |
---|
107 | !*************************************************************************** |
---|
108 | |
---|
109 | memaux=memind(1) |
---|
110 | memind(1)=memind(2) |
---|
111 | memind(2)=memaux |
---|
112 | memtime(1)=memtime(2) |
---|
113 | |
---|
114 | |
---|
115 | ! Read a new wind field and store it on place memind(2) |
---|
116 | !****************************************************** |
---|
117 | |
---|
118 | do indj=indmin,numbwf-1 |
---|
119 | if (ldirect*wftime(indj+1).gt.ldirect*itime) then |
---|
120 | if (metdata_format.eq.GRIBFILE_CENTRE_ECMWF) then |
---|
121 | call readwind_ecmwf(indj+1,memind(2),uuh,vvh,wwh) |
---|
122 | else |
---|
123 | call readwind_gfs(indj+1,memind(2),uuh,vvh,wwh) |
---|
124 | end if |
---|
125 | call readwind_nests(indj+1,memind(2),uuhn,vvhn,wwhn) |
---|
126 | call calcpar(memind(2),uuh,vvh,pvh,metdata_format) |
---|
127 | call calcpar_nests(memind(2),uuhn,vvhn,pvhn,metdata_format) |
---|
128 | if (metdata_format.eq.GRIBFILE_CENTRE_ECMWF) then |
---|
129 | call verttransform_ecmwf(memind(2),uuh,vvh,wwh,pvh) |
---|
130 | else |
---|
131 | call verttransform_gfs(memind(2),uuh,vvh,wwh,pvh) |
---|
132 | end if |
---|
133 | call verttransform_nests(memind(2),uuhn,vvhn,wwhn,pvhn) |
---|
134 | memtime(2)=wftime(indj+1) |
---|
135 | nstop = 1 |
---|
136 | goto 40 |
---|
137 | endif |
---|
138 | end do |
---|
139 | 40 indmin=indj |
---|
140 | |
---|
141 | if (WETBKDEP) then |
---|
142 | call writeprecip(itime,memind(1)) |
---|
143 | endif |
---|
144 | |
---|
145 | else |
---|
146 | |
---|
147 | ! No wind fields, which can be used, are currently in memory |
---|
148 | ! -> read both wind fields |
---|
149 | !*********************************************************** |
---|
150 | |
---|
151 | do indj=indmin,numbwf-1 |
---|
152 | if ((ldirect*wftime(indj).le.ldirect*itime).and. & |
---|
153 | (ldirect*wftime(indj+1).gt.ldirect*itime)) then |
---|
154 | memind(1)=1 |
---|
155 | if (metdata_format.eq.GRIBFILE_CENTRE_ECMWF) then |
---|
156 | call readwind_ecmwf(indj,memind(1),uuh,vvh,wwh) |
---|
157 | else |
---|
158 | call readwind_gfs(indj,memind(1),uuh,vvh,wwh) |
---|
159 | end if |
---|
160 | call readwind_nests(indj,memind(1),uuhn,vvhn,wwhn) |
---|
161 | call calcpar(memind(1),uuh,vvh,pvh,metdata_format) |
---|
162 | call calcpar_nests(memind(1),uuhn,vvhn,pvhn,metdata_format) |
---|
163 | if (metdata_format.eq.GRIBFILE_CENTRE_ECMWF) then |
---|
164 | call verttransform_ecmwf(memind(1),uuh,vvh,wwh,pvh) |
---|
165 | else |
---|
166 | call verttransform_gfs(memind(1),uuh,vvh,wwh,pvh) |
---|
167 | end if |
---|
168 | call verttransform_nests(memind(1),uuhn,vvhn,wwhn,pvhn) |
---|
169 | memtime(1)=wftime(indj) |
---|
170 | memind(2)=2 |
---|
171 | if (metdata_format.eq.GRIBFILE_CENTRE_ECMWF) then |
---|
172 | call readwind_ecmwf(indj+1,memind(2),uuh,vvh,wwh) |
---|
173 | else |
---|
174 | call readwind_gfs(indj+1,memind(2),uuh,vvh,wwh) |
---|
175 | end if |
---|
176 | call readwind_nests(indj+1,memind(2),uuhn,vvhn,wwhn) |
---|
177 | call calcpar(memind(2),uuh,vvh,pvh,metdata_format) |
---|
178 | call calcpar_nests(memind(2),uuhn,vvhn,pvhn,metdata_format) |
---|
179 | if (metdata_format.eq.GRIBFILE_CENTRE_ECMWF) then |
---|
180 | call verttransform_ecmwf(memind(2),uuh,vvh,wwh,pvh) |
---|
181 | else |
---|
182 | call verttransform_gfs(memind(2),uuh,vvh,wwh,pvh) |
---|
183 | end if |
---|
184 | call verttransform_nests(memind(2),uuhn,vvhn,wwhn,pvhn) |
---|
185 | memtime(2)=wftime(indj+1) |
---|
186 | nstop = 1 |
---|
187 | goto 60 |
---|
188 | endif |
---|
189 | end do |
---|
190 | 60 indmin=indj |
---|
191 | |
---|
192 | if (WETBKDEP) then |
---|
193 | call writeprecip(itime,memind(1)) |
---|
194 | endif |
---|
195 | |
---|
196 | end if |
---|
197 | |
---|
198 | ! RLT calculate dry air density |
---|
199 | pwater=qv*prs/((r_air/r_water)*(1.-qv)+qv) |
---|
200 | rho_dry=(prs-pwater)/(r_air*tt) |
---|
201 | |
---|
202 | ! test density |
---|
203 | ! write(rowfmt,'(A,I6,A)') '(',nymax,'(E11.4,1X))' |
---|
204 | ! if(itime.eq.0) then |
---|
205 | ! open(500,file=path(2)(1:length(2))//'rho_dry.txt',status='replace',action='write') |
---|
206 | ! do kz=1,nzmax |
---|
207 | ! do ix=1,nxmax |
---|
208 | ! write(500,fmt=rowfmt) rho_dry(ix,:,kz,1) |
---|
209 | ! end do |
---|
210 | ! end do |
---|
211 | ! close(500) |
---|
212 | ! open(500,file=path(2)(1:length(2))//'rho.txt',status='replace',action='write') |
---|
213 | ! do kz=1,nzmax |
---|
214 | ! do ix=1,nxmax |
---|
215 | ! write(500,fmt=rowfmt) rho(ix,:,kz,1) |
---|
216 | ! end do |
---|
217 | ! end do |
---|
218 | ! close(500) |
---|
219 | ! endif |
---|
220 | |
---|
221 | lwindinterv=abs(memtime(2)-memtime(1)) |
---|
222 | |
---|
223 | if (lwindinterv.gt.idiffmax) nstop=3 |
---|
224 | |
---|
225 | end subroutine getfields |
---|