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readwind_emos.f90 @ 3481cc1

10.4.1_peseiGFS_025bugfixes+enhancementsdevrelease-10release-10.4.1scaling-bug

Last change on this file since 3481cc1 was 3481cc1, checked in by Ignacio Pisso <ip@…>, 4 years ago
move license from headers to a different file
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File size: 12.0 KB

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1	subroutine readwind(indj,n,uuh,vvh,wwh)
2
3	!**********************************************************************
4	! *
5	! TRAJECTORY MODEL SUBROUTINE READWIND *
6	! *
7	!**********************************************************************
8	! *
9	! AUTHOR: G. WOTAWA *
10	! DATE: 1997-08-05 *
11	! LAST UPDATE: 2000-10-17, Andreas Stohl *
12	! *
13	!**********************************************************************
14	! Changes, Bernd C. Krueger, Feb. 2001:
15	! Variables tth and qvh (on eta coordinates) in common block
16	!**********************************************************************
17	! *
18	! DESCRIPTION: *
19	! *
20	! READING OF ECMWF METEOROLOGICAL FIELDS FROM INPUT DATA FILES. THE *
21	! INPUT DATA FILES ARE EXPECTED TO BE AVAILABLE IN GRIB CODE *
22	! *
23	! INPUT: *
24	! indj indicates number of the wind field to be read in *
25	! n temporal index for meteorological fields (1 to 3)*
26	! *
27	! IMPORTANT VARIABLES FROM COMMON BLOCK: *
28	! *
29	! wfname File name of data to be read in *
30	! nx,ny,nuvz,nwz expected field dimensions *
31	! nlev_ec number of vertical levels ecmwf model *
32	! uu,vv,ww wind fields *
33	! tt,qv temperature and specific humidity *
34	! ps surface pressure *
35	! *
36	!**********************************************************************
37
38	use par_mod
39	use com_mod
40
41	implicit none
42
43	real :: uuh(0:nxmax-1,0:nymax-1,nuvzmax)
44	real :: vvh(0:nxmax-1,0:nymax-1,nuvzmax)
45	real :: wwh(0:nxmax-1,0:nymax-1,nwzmax)
46	integer :: indj,i,j,k,n,levdiff2,ifield,iumax,iwmax,lunit
47
48	! VARIABLES AND ARRAYS NEEDED FOR GRIB DECODING
49
50	! dimension of isec2 at least (22+n), where n is the number of parallels or
51	! meridians in a quasi-regular (reduced) Gaussian or lat/long grid
52
53	! dimension of zsec2 at least (10+nn), where nn is the number of vertical
54	! coordinate parameters
55
56	integer :: isec0(2),isec1(56),isec2(22+nxmax+nymax),isec3(2)
57	integer :: isec4(64),inbuff(jpack),ilen,ierr,iword
58	!integer iswap
59	real :: zsec2(60+2*nuvzmax),zsec3(2),zsec4(jpunp)
60	real :: xaux,yaux,xaux0,yaux0
61	real,parameter :: eps=1.e-4
62	real :: ewss(0:nxmax-1,0:nymax-1),nsss(0:nxmax-1,0:nymax-1)
63	real :: plev1,pmean,tv,fu,hlev1,ff10m,fflev1
64
65	character(len=1) :: yoper = 'D'
66	logical :: hflswitch,strswitch
67
68	hflswitch=.false.
69	strswitch=.false.
70	levdiff2=nlev_ec-nwz+1
71	iumax=0
72	iwmax=0
73
74	!
75	! OPENING OF DATA FILE (GRIB CODE)
76	!
77	5 call pbopen(lunit,path(3)(1:length(3))//wfname(indj),'r',ierr)
78	if(ierr.lt.0) goto 999
79
80	ifield=0
81	10 ifield=ifield+1
82	!
83	! GET NEXT FIELDS
84	!
85	call pbgrib(lunit,inbuff,jpack,ilen,ierr)
86	if(ierr.eq.-1) goto 50 ! EOF DETECTED
87	if(ierr.lt.-1) goto 888 ! ERROR DETECTED
88
89	ierr=1
90
91	! Check whether we are on a little endian or on a big endian computer
92	!********************************************************************
93
94	!if (inbuff(1).eq.1112101447) then ! little endian, swap bytes
95	! iswap=1+ilen/4
96	! call swap32(inbuff,iswap)
97	!else if (inbuff(1).ne.1196575042) then ! big endian
98	! stop 'subroutine gridcheck: corrupt GRIB data'
99	!endif
100
101
102	call gribex(isec0,isec1,isec2,zsec2,isec3,zsec3,isec4, &
103	zsec4,jpunp,inbuff,jpack,iword,yoper,ierr)
104	if (ierr.ne.0) goto 888 ! ERROR DETECTED
105
106	if(ifield.eq.1) then
107
108	! CHECK GRID SPECIFICATIONS
109
110	if(isec2(2).ne.nxfield) stop 'READWIND: NX NOT CONSISTENT'
111	if(isec2(3).ne.ny) stop 'READWIND: NY NOT CONSISTENT'
112	if(isec2(12)/2-1.ne.nlev_ec) &
113	stop 'READWIND: VERTICAL DISCRETIZATION NOT CONSISTENT'
114	xaux=real(isec2(5))/1000.+real(nxshift)*dx
115	yaux=real(isec2(7))/1000.
116	xaux0=xlon0
117	yaux0=ylat0
118	if(xaux.lt.0.) xaux=xaux+360.
119	if(yaux.lt.0.) yaux=yaux+360.
120	if(xaux0.lt.0.) xaux0=xaux0+360.
121	if(yaux0.lt.0.) yaux0=yaux0+360.
122	if(abs(xaux-xaux0).gt.eps) &
123	stop 'READWIND: LOWER LEFT LONGITUDE NOT CONSISTENT'
124	if(abs(yaux-yaux0).gt.eps) &
125	stop 'READWIND: LOWER LEFT LATITUDE NOT CONSISTENT'
126	endif
127
128	do j=0,nymin1
129	do i=0,nxfield-1
130	k=isec1(8)
131	if(isec1(6).eq.130) tth(i,j,nlev_ec-k+2,n)= &!! TEMPERATURE
132	zsec4(nxfield*(ny-j-1)+i+1)
133	if(isec1(6).eq.131) uuh(i,j,nlev_ec-k+2)= &!! U VELOCITY
134	zsec4(nxfield*(ny-j-1)+i+1)
135	if(isec1(6).eq.132) vvh(i,j,nlev_ec-k+2)= &!! V VELOCITY
136	zsec4(nxfield*(ny-j-1)+i+1)
137	if(isec1(6).eq.133) then !! SPEC. HUMIDITY
138	qvh(i,j,nlev_ec-k+2,n)=zsec4(nxfield*(ny-j-1)+i+1)
139	if (qvh(i,j,nlev_ec-k+2,n) .lt. 0.) &
140	qvh(i,j,nlev_ec-k+2,n) = 0.
141	! this is necessary because the gridded data may contain
142	! spurious negative values
143	endif
144	if(isec1(6).eq.134) ps(i,j,1,n)= &!! SURF. PRESS.
145	zsec4(nxfield*(ny-j-1)+i+1)
146
147	if(isec1(6).eq.135) wwh(i,j,nlev_ec-k+1)= &!! W VELOCITY
148	zsec4(nxfield*(ny-j-1)+i+1)
149	if(isec1(6).eq.141) sd(i,j,1,n)= &!! SNOW DEPTH
150	zsec4(nxfield*(ny-j-1)+i+1)
151	if(isec1(6).eq.151) msl(i,j,1,n)= &!! SEA LEVEL PRESS.
152	zsec4(nxfield*(ny-j-1)+i+1)
153	if(isec1(6).eq.164) tcc(i,j,1,n)= &!! CLOUD COVER
154	zsec4(nxfield*(ny-j-1)+i+1)
155	if(isec1(6).eq.165) u10(i,j,1,n)= &!! 10 M U VELOCITY
156	zsec4(nxfield*(ny-j-1)+i+1)
157	if(isec1(6).eq.166) v10(i,j,1,n)= &!! 10 M V VELOCITY
158	zsec4(nxfield*(ny-j-1)+i+1)
159	if(isec1(6).eq.167) tt2(i,j,1,n)= &!! 2 M TEMPERATURE
160	zsec4(nxfield*(ny-j-1)+i+1)
161	if(isec1(6).eq.168) td2(i,j,1,n)= &!! 2 M DEW POINT
162	zsec4(nxfield*(ny-j-1)+i+1)
163	if(isec1(6).eq.142) then !! LARGE SCALE PREC.
164	lsprec(i,j,1,n)=zsec4(nxfield*(ny-j-1)+i+1)
165	if (lsprec(i,j,1,n).lt.0.) lsprec(i,j,1,n)=0.
166	endif
167	if(isec1(6).eq.143) then !! CONVECTIVE PREC.
168	convprec(i,j,1,n)=zsec4(nxfield*(ny-j-1)+i+1)
169	if (convprec(i,j,1,n).lt.0.) convprec(i,j,1,n)=0.
170	endif
171	if(isec1(6).eq.146) sshf(i,j,1,n)= &!! SENS. HEAT FLUX
172	zsec4(nxfield*(ny-j-1)+i+1)
173	if((isec1(6).eq.146).and.(zsec4(nxfield*(ny-j-1)+i+1).ne.0.)) &
174	hflswitch=.true. ! Heat flux available
175	if(isec1(6).eq.176) then !! SOLAR RADIATION
176	ssr(i,j,1,n)=zsec4(nxfield*(ny-j-1)+i+1)
177	if (ssr(i,j,1,n).lt.0.) ssr(i,j,1,n)=0.
178	endif
179	if(isec1(6).eq.180) ewss(i,j)= &!! EW SURFACE STRESS
180	zsec4(nxfield*(ny-j-1)+i+1)
181	if(isec1(6).eq.181) nsss(i,j)= &!! NS SURFACE STRESS
182	zsec4(nxfield*(ny-j-1)+i+1)
183	if(((isec1(6).eq.180).or.(isec1(6).eq.181)).and. &
184	(zsec4(nxfield*(ny-j-1)+i+1).ne.0.)) strswitch=.true. ! stress available
185	if(isec1(6).eq.129) oro(i,j)= &!! ECMWF OROGRAPHY
186	zsec4(nxfield*(ny-j-1)+i+1)/ga
187	if(isec1(6).eq.160) excessoro(i,j)= &!! STANDARD DEVIATION OF OROGRAPHY
188	zsec4(nxfield*(ny-j-1)+i+1)
189	if(isec1(6).eq.172) lsm(i,j)= &!! ECMWF LAND SEA MASK
190	zsec4(nxfield*(ny-j-1)+i+1)
191	if(isec1(6).eq.131) iumax=max(iumax,nlev_ec-k+1)
192	if(isec1(6).eq.135) iwmax=max(iwmax,nlev_ec-k+1)
193	end do
194	end do
195
196	goto 10 !! READ NEXT LEVEL OR PARAMETER
197	!
198	! CLOSING OF INPUT DATA FILE
199	!
200	50 call pbclose(lunit,ierr) !! FINNISHED READING / CLOSING GRIB FILE
201
202	if(levdiff2.eq.0) then
203	iwmax=nlev_ec+1
204	do i=0,nxmin1
205	do j=0,nymin1
206	wwh(i,j,nlev_ec+1)=0.
207	end do
208	end do
209	endif
210
211
212	! For global fields, assign the leftmost data column also to the rightmost
213	! data column; if required, shift whole grid by nxshift grid points
214	!*************************************************************************
215
216	if (xglobal) then
217	call shift_field_0(ewss,nxfield,ny)
218	call shift_field_0(nsss,nxfield,ny)
219	call shift_field_0(oro,nxfield,ny)
220	call shift_field_0(excessoro,nxfield,ny)
221	call shift_field_0(lsm,nxfield,ny)
222	call shift_field(ps,nxfield,ny,1,1,2,n)
223	call shift_field(sd,nxfield,ny,1,1,2,n)
224	call shift_field(msl,nxfield,ny,1,1,2,n)
225	call shift_field(tcc,nxfield,ny,1,1,2,n)
226	call shift_field(u10,nxfield,ny,1,1,2,n)
227	call shift_field(v10,nxfield,ny,1,1,2,n)
228	call shift_field(tt2,nxfield,ny,1,1,2,n)
229	call shift_field(td2,nxfield,ny,1,1,2,n)
230	call shift_field(lsprec,nxfield,ny,1,1,2,n)
231	call shift_field(convprec,nxfield,ny,1,1,2,n)
232	call shift_field(sshf,nxfield,ny,1,1,2,n)
233	call shift_field(ssr,nxfield,ny,1,1,2,n)
234	call shift_field(tth,nxfield,ny,nuvzmax,nuvz,2,n)
235	call shift_field(qvh,nxfield,ny,nuvzmax,nuvz,2,n)
236	call shift_field(uuh,nxfield,ny,nuvzmax,nuvz,1,1)
237	call shift_field(vvh,nxfield,ny,nuvzmax,nuvz,1,1)
238	call shift_field(wwh,nxfield,ny,nwzmax,nwz,1,1)
239	endif
240
241	do i=0,nxmin1
242	do j=0,nymin1
243	surfstr(i,j,1,n)=sqrt(ewss(i,j)2+nsss(i,j)2)
244	end do
245	end do
246
247	if ((.not.hflswitch).or.(.not.strswitch)) then
248	write(,) 'WARNING: No flux data contained in GRIB file ', &
249	wfname(indj)
250
251	! CALCULATE USTAR AND SSHF USING THE PROFILE METHOD
252	! As ECMWF has increased the model resolution, such that now the first model
253	! level is at about 10 m (where 10-m wind is given), use the 2nd ECMWF level
254	! (3rd model level in FLEXPART) for the profile method
255	!***************************************************************************
256
257	do i=0,nxmin1
258	do j=0,nymin1
259	plev1=akz(3)+bkz(3)*ps(i,j,1,n)
260	pmean=0.5*(ps(i,j,1,n)+plev1)
261	tv=tth(i,j,3,n)(1.+0.61qvh(i,j,3,n))
262	fu=-r_air*tv/ga/pmean
263	hlev1=fu*(plev1-ps(i,j,1,n)) ! HEIGTH OF FIRST MODEL LAYER
264	ff10m= sqrt(u10(i,j,1,n)2+v10(i,j,1,n)2)
265	fflev1=sqrt(uuh(i,j,3)2+vvh(i,j,3)2)
266	call pbl_profile(ps(i,j,1,n),td2(i,j,1,n),hlev1, &
267	tt2(i,j,1,n),tth(i,j,3,n),ff10m,fflev1, &
268	surfstr(i,j,1,n),sshf(i,j,1,n))
269	if(sshf(i,j,1,n).gt.200.) sshf(i,j,1,n)=200.
270	if(sshf(i,j,1,n).lt.-400.) sshf(i,j,1,n)=-400.
271	end do
272	end do
273	endif
274
275
276	! Assign 10 m wind to model level at eta=1.0 to have one additional model
277	! level at the ground
278	! Specific humidity is taken the same as at one level above
279	! Temperature is taken as 2 m temperature
280	!**************************************************************************
281
282	do i=0,nxmin1
283	do j=0,nymin1
284	uuh(i,j,1)=u10(i,j,1,n)
285	vvh(i,j,1)=v10(i,j,1,n)
286	qvh(i,j,1,n)=qvh(i,j,2,n)
287	tth(i,j,1,n)=tt2(i,j,1,n)
288	end do
289	end do
290
291	if(iumax.ne.nuvz-1) stop 'READWIND: NUVZ NOT CONSISTENT'
292	if(iwmax.ne.nwz) stop 'READWIND: NWZ NOT CONSISTENT'
293
294	return
295	888 write(,) ' #### FLEXPART MODEL ERROR! WINDFIELD #### '
296	write(,) ' #### ',wfname(indj),' #### '
297	write(,) ' #### IS NOT GRIB FORMAT !!! #### '
298	stop 'Execution terminated'
299	999 write(,) ' #### FLEXPART MODEL ERROR! WINDFIELD #### '
300	write(,) ' #### ',wfname(indj),' #### '
301	write(,) ' #### CANNOT BE OPENED !!! #### '
302	stop 'Execution terminated'
303
304	end subroutine readwind

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