/[MITgcm]/MITgcm/pkg/exf/exf_set_gen.F
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Revision 1.16 - (hide annotations) (download)
Wed Feb 7 17:38:11 2007 UTC (17 years, 4 months ago) by dimitri
Branch: MAIN
CVS Tags: checkpoint58v_post
Changes since 1.15: +73 -21 lines
pkg/exf: changes to properly interpolate/mask/scale initial fields

1 edhill 1.7 #include "EXF_OPTIONS.h"
2 heimbach 1.2
3     subroutine exf_set_gen(
4 heimbach 1.10 & genfile, genstartdate, genperiod,
5     & genstartdate1, genstartdate2,
6 heimbach 1.13 & exf_inscal_gen, genremove_intercept, genremove_slope,
7 dimitri 1.3 & genfld, gen0, gen1, genmask,
8     #ifdef USE_EXF_INTERPOLATION
9     & gen_lon0, gen_lon_inc, gen_lat0, gen_lat_inc,
10 dimitri 1.11 & gen_nlon, gen_nlat, gen_xout, gen_yout, interp_method,
11 dimitri 1.3 #endif
12 heimbach 1.13 & mytime, myiter, mythid )
13 heimbach 1.2
14     c ==================================================================
15     c SUBROUTINE exf_set_gen
16     c ==================================================================
17     c
18     c o set external forcing gen
19     c
20     c started: Ralf.Giering@FastOpt.de 25-Mai-2000
21     c changed: heimbach@mit.edu 10-Jan-2002
22 dimitri 1.4 c 20-Dec-2002: mods for pkg/seaice, menemenlis@jpl.nasa.gov
23 heimbach 1.2 c heimbach@mit.edu: totally re-organized exf_set_...
24     c replaced all routines by one generic routine
25 dimitri 1.4 c 5-Aug-2003: added USE_EXF_INTERPOLATION for arbitrary
26     c input grid capability
27 dimitri 1.15 c 11-Dec-2006 added time-mean and monthly-mean climatology options
28     c genperiod=0 means input file is one time-constant field
29     c genperiod=-12 means input file contains 12 monthly means
30 heimbach 1.2
31     c ==================================================================
32     c SUBROUTINE exf_set_gen
33     c ==================================================================
34    
35     implicit none
36    
37     c == global variables ==
38    
39     #include "EEPARAMS.h"
40     #include "SIZE.h"
41 heimbach 1.13 #include "PARAMS.h"
42 heimbach 1.2 #include "GRID.h"
43    
44     #include "exf_param.h"
45     #include "exf_constants.h"
46    
47     c == routine arguments ==
48    
49 heimbach 1.10 integer genstartdate1, genstartdate2
50 heimbach 1.13 _RL genstartdate, genperiod
51     _RL exf_inscal_gen
52     _RL genremove_intercept, genremove_slope
53     _RL genfld(1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
54     _RL gen0 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
55     _RL gen1 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
56 heimbach 1.2 character*1 genmask
57 dimitri 1.16 character*(128) genfile
58 heimbach 1.13 _RL mytime
59     integer myiter
60 heimbach 1.2 integer mythid
61 dimitri 1.16
62 dimitri 1.3 #ifdef USE_EXF_INTERPOLATION
63 dimitri 1.4 c gen_lon_0 ,gen_lat_0 :: longitude and latitude of SouthWest
64     c corner of global input grid
65     c gen_nlon, gen_nlat :: input x-grid and y-grid size
66     c gen_lon_inc :: scalar x-grid increment
67     c gen_lat_inc :: vector y-grid increments
68     c gen_xout, gen_yout :: coordinates for output grid
69 dimitri 1.3 _RL gen_lon0, gen_lon_inc
70     _RL gen_lat0, gen_lat_inc(MAX_LAT_INC)
71     INTEGER gen_nlon, gen_nlat
72 dimitri 1.4 _RS gen_xout (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
73     _RS gen_yout (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
74 dimitri 1.11 integer interp_method
75 dimitri 1.16 #endif /* USE_EXF_INTERPOLATION */
76 heimbach 1.2
77     c == local variables ==
78    
79     logical first, changed
80     integer count0, count1
81 heimbach 1.10 integer year0, year1
82 dimitri 1.16 integer bi, bj, i, j, il
83 heimbach 1.2 _RL fac
84 dimitri 1.16 character*(128) genfile0, genfile1
85 heimbach 1.10
86     c == external ==
87    
88     integer ilnblnk
89     external ilnblnk
90 heimbach 1.2
91     c == end of interface ==
92    
93 dimitri 1.16 if ( genfile .NE. ' ' .and. genperiod .ne. 0 ) then
94 heimbach 1.2
95 heimbach 1.10 cph(
96     cph-exf-print if (genfile .EQ. hfluxfile) year0 = 3000
97     cph)
98 dimitri 1.15
99 dimitri 1.16 if ( genperiod .eq. -12 ) then
100 dimitri 1.15 c genperiod=-12 means input file contains 12 monthly means
101     c record numbers are assumed 1 to 12 corresponding to
102     c Jan. through Dec.
103     call cal_GetMonthsRec(
104     O fac, first, changed,
105     O count0, count1,
106     I mytime, myiter, mythid
107     & )
108    
109     elseif ( genperiod .lt. 0 ) then
110     print *, 'genperiod is out of range'
111     STOP 'ABNORMAL END: S/R EXF_GETFFIELDREC'
112    
113     else
114 heimbach 1.2 c get record numbers and interpolation factor for gen
115 dimitri 1.15 call exf_GetFFieldRec(
116     I genstartdate, genperiod
117     I , genstartdate1, genstartdate2
118     I , useExfYearlyFields
119     O , fac, first, changed
120     O , count0, count1, year0, year1
121     I , mytime, myiter, mythid
122     & )
123    
124     endif
125 heimbach 1.2
126     if ( first ) then
127 dimitri 1.15 if (useExfYearlyFields.and.genperiod.gt.0) then
128 dimitri 1.12 C Complete filename with YR or _YEAR extension
129 heimbach 1.10 il = ilnblnk( genfile )
130 dimitri 1.12 if (twoDigitYear) then
131     if (year0.ge.2000) then
132     write(genfile0(1:128),'(a,i2.2)')
133     & genfile(1:il),year0-2000
134     else
135     write(genfile0(1:128),'(a,i2.2)')
136     & genfile(1:il),year0-1900
137     endif
138     else
139     write(genfile0(1:128),'(2a,i4.4)')
140     & genfile(1:il),'_',year0
141     endif
142 heimbach 1.10 else
143     genfile0 = genfile
144     endif
145 dimitri 1.15
146    
147 dimitri 1.3 #ifdef USE_EXF_INTERPOLATION
148 heimbach 1.10 call exf_interp( genfile0, exf_iprec
149 dimitri 1.4 & , gen1, count0, gen_xout, gen_yout
150 dimitri 1.3 & , gen_lon0,gen_lon_inc
151     & , gen_lat0,gen_lat_inc
152 dimitri 1.5 & , gen_nlon,gen_nlat,interp_method,mythid
153 dimitri 1.3 & )
154     #else
155 heimbach 1.10 call mdsreadfield( genfile0, exf_iprec, exf_yftype, 1
156 heimbach 1.2 & , gen1, count0, mythid
157     & )
158 dimitri 1.16 #endif /* USE_EXF_INTERPOLATION */
159 heimbach 1.2
160     if (exf_yftype .eq. 'RL') then
161     call exf_filter_rl( gen1, genmask, mythid )
162     else
163     call exf_filter_rs( gen1, genmask, mythid )
164     end if
165     endif
166    
167     if (( first ) .or. ( changed )) then
168     call exf_SwapFFields( gen0, gen1, mythid )
169    
170 dimitri 1.15 if (useExfYearlyFields.and.genperiod.gt.0) then
171 dimitri 1.12 C Complete filename with YR or _YEAR extension
172 heimbach 1.10 il = ilnblnk( genfile )
173 dimitri 1.12 if (twoDigitYear) then
174     if (year1.ge.2000) then
175     write(genfile1(1:128),'(a,i2.2)')
176     & genfile(1:il),year1-2000
177     else
178     write(genfile1(1:128),'(a,i2.2)')
179     & genfile(1:il),year1-1900
180     endif
181     else
182     write(genfile1(1:128),'(2a,i4.4)')
183     & genfile(1:il),'_',year1
184     endif
185 heimbach 1.10 else
186     genfile1 = genfile
187     endif
188 dimitri 1.3 #ifdef USE_EXF_INTERPOLATION
189 heimbach 1.10 call exf_interp( genfile1, exf_iprec
190 dimitri 1.4 & , gen1, count1, gen_xout, gen_yout
191 dimitri 1.3 & , gen_lon0,gen_lon_inc
192     & , gen_lat0,gen_lat_inc
193 dimitri 1.5 & , gen_nlon,gen_nlat,interp_method,mythid
194 dimitri 1.3 & )
195     #else
196 heimbach 1.10 call mdsreadfield( genfile1, exf_iprec, exf_yftype, 1
197 heimbach 1.2 & , gen1, count1, mythid
198     & )
199 dimitri 1.16 #endif /* USE_EXF_INTERPOLATION */
200 heimbach 1.2
201     if (exf_yftype .eq. 'RL') then
202     call exf_filter_rl( gen1, genmask, mythid )
203     else
204     call exf_filter_rs( gen1, genmask, mythid )
205     end if
206     endif
207    
208     c Loop over tiles.
209     do bj = mybylo(mythid),mybyhi(mythid)
210 heimbach 1.13 do bi = mybxlo(mythid),mybxhi(mythid)
211     do j = 1,sny
212     do i = 1,snx
213     c Interpolate linearly onto the time.
214     genfld(i,j,bi,bj) = exf_inscal_gen * (
215     & fac * gen0(i,j,bi,bj) +
216     & (exf_one - fac) * gen1(i,j,bi,bj) )
217     genfld(i,j,bi,bj) =
218     & genfld(i,j,bi,bj) -
219     & exf_inscal_gen * ( genremove_intercept +
220     & genremove_slope*(mytime-starttime) )
221 heimbach 1.2 enddo
222     enddo
223     enddo
224     enddo
225    
226     endif
227    
228     end
229    
230    
231 dimitri 1.16 C+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
232     C+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
233 heimbach 1.2
234     subroutine exf_init_gen (
235 dimitri 1.16 & genfile, exf_inscal_gen, genmask,
236     & genconst, genfld, gen0, gen1,
237     #ifdef USE_EXF_INTERPOLATION
238     & gen_lon0, gen_lon_inc, gen_lat0, gen_lat_inc,
239     & gen_nlon, gen_nlat, gen_xout, gen_yout, interp_method,
240     #endif
241     & mythid )
242    
243 heimbach 1.2
244     c ==================================================================
245     c SUBROUTINE exf_init_gen
246     c ==================================================================
247     c
248     c o
249     c
250     c started: Ralf.Giering@FastOpt.de 25-Mai-2000
251     c changed: heimbach@mit.edu 10-Jan-2002
252     c heimbach@mit.edu: totally re-organized exf_set_...
253     c replaced all routines by one generic routine
254     c
255     c ==================================================================
256     c SUBROUTINE exf_init_gen
257     c ==================================================================
258    
259     implicit none
260    
261     c == global variables ==
262    
263     #include "EEPARAMS.h"
264     #include "SIZE.h"
265    
266     #include "exf_param.h"
267    
268     c == routine arguments ==
269    
270 dimitri 1.16 _RL exf_inscal_gen
271 heimbach 1.2 _RL genconst
272     _RL genfld(1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
273     _RL gen0 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
274     _RL gen1 (1-olx:snx+olx,1-oly:sny+oly,nsx,nsy)
275 dimitri 1.16 character*1 genmask
276     character*(128) genfile
277 heimbach 1.2 integer mythid
278    
279 dimitri 1.16 #ifdef USE_EXF_INTERPOLATION
280     c gen_lon_0 ,gen_lat_0 :: longitude and latitude of SouthWest
281     c corner of global input grid
282     c gen_nlon, gen_nlat :: input x-grid and y-grid size
283     c gen_lon_inc :: scalar x-grid increment
284     c gen_lat_inc :: vector y-grid increments
285     c gen_xout, gen_yout :: coordinates for output grid
286     _RL gen_lon0, gen_lon_inc
287     _RL gen_lat0, gen_lat_inc(MAX_LAT_INC)
288     INTEGER gen_nlon, gen_nlat
289     _RS gen_xout (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
290     _RS gen_yout (1-OLx:sNx+OLx,1-OLy:sNy+OLy,nSx,nSy)
291     integer interp_method
292     #endif /* USE_EXF_INTERPOLATION */
293    
294 heimbach 1.2 c == local variables ==
295    
296 dimitri 1.16 integer bi, bj, i, j, count
297 heimbach 1.2
298     c == end of interface ==
299    
300     do bj = mybylo(mythid), mybyhi(mythid)
301     do bi = mybxlo(mythid), mybxhi(mythid)
302 heimbach 1.9 do j = 1-oly, sny+oly
303     do i = 1-olx, snx+olx
304 heimbach 1.2 genfld(i,j,bi,bj) = genconst
305 heimbach 1.9 gen0(i,j,bi,bj) = genconst
306     gen1(i,j,bi,bj) = genconst
307 heimbach 1.2 enddo
308     enddo
309     enddo
310     enddo
311    
312 dimitri 1.16 if ( genfile .NE. ' ' ) then
313     count = 1
314    
315     #ifdef USE_EXF_INTERPOLATION
316     call exf_interp( genfile, exf_iprec
317     & , genfld, count, gen_xout, gen_yout
318     & , gen_lon0,gen_lon_inc
319     & , gen_lat0,gen_lat_inc
320     & , gen_nlon,gen_nlat,interp_method,mythid
321     & )
322     #else
323     call mdsreadfield( genfile, exf_iprec, exf_yftype, 1
324     & , genfld, count, mythid
325     & )
326     #endif /* USE_EXF_INTERPOLATION */
327    
328     if (exf_yftype .eq. 'RL') then
329     call exf_filter_rl( genfld, genmask, mythid )
330     else
331     call exf_filter_rs( genfld, genmask, mythid )
332     end if
333    
334     c Loop over tiles.
335     do bj = mybylo(mythid),mybyhi(mythid)
336     do bi = mybxlo(mythid),mybxhi(mythid)
337     do j = 1,sny
338     do i = 1,snx
339     c Interpolate linearly onto the time.
340     genfld(i,j,bi,bj) =
341     & exf_inscal_gen * genfld(i,j,bi,bj)
342     enddo
343     enddo
344     enddo
345     enddo
346    
347 heimbach 1.14 endif
348    
349 heimbach 1.2 end

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