/[MITgcm]/MITgcm/pkg/exf/exf_mapfields.F
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Contents of /MITgcm/pkg/exf/exf_mapfields.F

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Revision 1.21 - (show annotations) (download)
Thu Sep 27 09:41:13 2007 UTC (16 years, 9 months ago) by mlosch
Branch: MAIN
CVS Tags: checkpoint59h
Changes since 1.20: +19 -10 lines
improve vectorization by moving if-statement out of loops

1 C $Header: /u/gcmpack/MITgcm/pkg/exf/exf_mapfields.F,v 1.20 2007/05/14 19:34:57 jmc Exp $
2 C $Name: $
3
4 #include "EXF_OPTIONS.h"
5
6 subroutine exf_mapfields( mytime, myiter, mythid )
7
8 c ==================================================================
9 c SUBROUTINE exf_mapfields
10 c ==================================================================
11 c
12 c o Map external forcing fields (ustress, vstress, hflux, sflux,
13 c swflux, apressure, climsss, climsst, etc.) onto ocean model
14 c arrays (fu, fv, Qnet, EmPmR, Qsw, pload, sss, sst, etc.).
15 c This routine is included to separate the ocean state estimation
16 c tool as much as possible from the ocean model. Unit and sign
17 c conventions can be customized using variables exf_outscal_*,
18 c which are set in exf_readparms.F. See the header files
19 c EXF_FIELDS.h and FFIELDS.h for definitions of the various input
20 c and output fields and for default unit and sign convetions.
21 c
22 c started: Christian Eckert eckert@mit.edu 09-Aug-1999
23 c
24 c changed: Christian Eckert eckert@mit.edu 11-Jan-2000
25 c - Restructured the code in order to create a package
26 c for the MITgcmUV.
27 c
28 c Christian Eckert eckert@mit.edu 12-Feb-2000
29 c - Changed Routine names (package prefix: exf_)
30 c
31 c Patrick Heimbach, heimbach@mit.edu 06-May-2000
32 c - added and changed CPP flag structure for
33 c ALLOW_BULKFORMULAE, ALLOW_ATM_TEMP
34 c
35 c Patrick Heimbach, heimbach@mit.edu 23-May-2000
36 c - sign change of ustress/vstress incorporated into
37 c scaling factors exf_outscal_ust, exf_outscal_vst
38 c
39 c mods for pkg/seaice: menemenlis@jpl.nasa.gov 20-Dec-2002
40 c
41 c ==================================================================
42 c SUBROUTINE exf_mapfields
43 c ==================================================================
44
45 implicit none
46
47 c == global variables ==
48
49 #include "EEPARAMS.h"
50 #include "SIZE.h"
51 #include "PARAMS.h"
52 #include "FFIELDS.h"
53 #include "GRID.h"
54
55 #include "EXF_PARAM.h"
56 #include "EXF_CONSTANTS.h"
57 #include "EXF_FIELDS.h"
58 #ifdef ALLOW_AUTODIFF_TAMC
59 # include "tamc.h"
60 # include "tamc_keys.h"
61 #endif
62 c == routine arguments ==
63
64 c mythid - thread number for this instance of the routine.
65
66 _RL mytime
67 integer myiter
68 integer mythid
69
70 c == local variables ==
71
72 integer bi,bj
73 integer i,j,k
74 INTEGER imin, imax
75 INTEGER jmin, jmax
76 PARAMETER ( imin = 1-OLx , imax = sNx+OLx )
77 PARAMETER ( jmin = 1-OLy , jmax = sNy+OLy )
78
79 c == end of interface ==
80
81 DO bj = myByLo(myThid),myByHi(myThid)
82 DO bi = myBxLo(myThid),myBxHi(myThid)
83
84 #ifdef ALLOW_AUTODIFF_TAMC
85 act1 = bi - myBxLo(myThid)
86 max1 = myBxHi(myThid) - myBxLo(myThid) + 1
87 act2 = bj - myByLo(myThid)
88 max2 = myByHi(myThid) - myByLo(myThid) + 1
89 act3 = myThid - 1
90 max3 = nTx*nTy
91 act4 = ikey_dynamics - 1
92 ikey = (act1 + 1) + act2*max1
93 & + act3*max1*max2
94 & + act4*max1*max2*max3
95 #endif /* ALLOW_AUTODIFF_TAMC */
96
97 c Heat flux.
98 do j = jmin,jmax
99 do i = imin,imax
100 qnet(i,j,bi,bj) = exf_outscal_hflux*hflux(i,j,bi,bj)
101 enddo
102 enddo
103 if ( hfluxfile .EQ. ' ' ) then
104 do j = jmin,jmax
105 do i = imin,imax
106 qnet(i,j,bi,bj) = qnet(i,j,bi,bj) -
107 & exf_outscal_hflux * ( hflux_exfremo_intercept +
108 & hflux_exfremo_slope*(mytime-starttime) )
109 enddo
110 enddo
111 endif
112
113 c Salt flux.
114 do j = jmin,jmax
115 do i = imin,imax
116 empmr(i,j,bi,bj)= exf_outscal_sflux*sflux(i,j,bi,bj)
117 enddo
118 enddo
119 if ( sfluxfile .EQ. ' ' ) then
120 do j = jmin,jmax
121 do i = imin,imax
122 empmr(i,j,bi,bj) = empmr(i,j,bi,bj) -
123 & exf_outscal_sflux * ( sflux_exfremo_intercept +
124 & sflux_exfremo_slope*(mytime-starttime) )
125 enddo
126 enddo
127 endif
128
129 #ifdef ALLOW_AUTODIFF_TAMC
130 CADJ STORE ustress(:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte
131 #endif
132 do j = jmin,jmax
133 do i = imin,imax
134 c Zonal wind stress.
135 if (ustress(i,j,bi,bj).gt.windstressmax) then
136 ustress(i,j,bi,bj)=windstressmax
137 endif
138 enddo
139 enddo
140 #ifdef ALLOW_AUTODIFF_TAMC
141 CADJ STORE ustress(:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte
142 #endif
143 do j = jmin,jmax
144 do i = imin,imax
145 if (ustress(i,j,bi,bj).lt.-windstressmax) then
146 ustress(i,j,bi,bj)=-windstressmax
147 endif
148 enddo
149 enddo
150 IF ( stressIsOnCgrid ) THEN
151 do j = jmin,jmax
152 do i = imin+1,imax
153 fu(i,j,bi,bj) = exf_outscal_ustress*ustress(i,j,bi,bj)
154 enddo
155 enddo
156 ELSE
157 do j = jmin,jmax
158 do i = imin+1,imax
159 c Shift wind stresses calculated at Grid-center to W/S points
160 fu(i,j,bi,bj) = exf_outscal_ustress*
161 & (ustress(i,j,bi,bj)+ustress(i-1,j,bi,bj))
162 & *exf_half*maskW(i,j,1,bi,bj)
163 enddo
164 enddo
165 ENDIF
166
167 #ifdef ALLOW_AUTODIFF_TAMC
168 CADJ STORE vstress(:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte
169 #endif
170 do j = jmin,jmax
171 do i = imin,imax
172 c Meridional wind stress.
173 if (vstress(i,j,bi,bj).gt.windstressmax) then
174 vstress(i,j,bi,bj)=windstressmax
175 endif
176 enddo
177 enddo
178 #ifdef ALLOW_AUTODIFF_TAMC
179 CADJ STORE vstress(:,:,bi,bj) = comlev1_bibj, key=ikey, byte=isbyte
180 #endif
181 do j = jmin,jmax
182 do i = imin,imax
183 if (vstress(i,j,bi,bj).lt.-windstressmax) then
184 vstress(i,j,bi,bj)=-windstressmax
185 endif
186 enddo
187 enddo
188 IF ( stressIsOnCgrid ) THEN
189 do j = jmin+1,jmax
190 do i = imin,imax
191 fv(i,j,bi,bj) = exf_outscal_vstress*vstress(i,j,bi,bj)
192 enddo
193 enddo
194 ELSE
195 do j = jmin+1,jmax
196 do i = imin,imax
197 c Shift wind stresses calculated at C-points to W/S points
198 fv(i,j,bi,bj) = exf_outscal_vstress*
199 & (vstress(i,j,bi,bj)+vstress(i,j-1,bi,bj))
200 & *exf_half*maskS(i,j,1,bi,bj)
201 enddo
202 enddo
203 ENDIF
204
205 #ifdef SHORTWAVE_HEATING
206 c Short wave radiative flux.
207 do j = jmin,jmax
208 do i = imin,imax
209 qsw(i,j,bi,bj) = exf_outscal_swflux*swflux(i,j,bi,bj)
210 enddo
211 enddo
212 #endif
213
214 #ifdef ALLOW_CLIMSST_RELAXATION
215 do j = jmin,jmax
216 do i = imin,imax
217 sst(i,j,bi,bj) = exf_outscal_sst*climsst(i,j,bi,bj)
218 enddo
219 enddo
220 #endif
221
222 #ifdef ALLOW_CLIMSSS_RELAXATION
223 do j = jmin,jmax
224 do i = imin,imax
225 sss(i,j,bi,bj) = exf_outscal_sss*climsss(i,j,bi,bj)
226 enddo
227 enddo
228 #endif
229
230 #ifdef ATMOSPHERIC_LOADING
231 do j = jmin,jmax
232 do i = imin,imax
233 pload(i,j,bi,bj)=exf_outscal_apressure*apressure(i,j,bi,bj)
234 enddo
235 enddo
236 #endif
237
238 ENDDO
239 ENDDO
240
241 c Update the tile edges.
242
243 _EXCH_XY_R4( qnet, mythid )
244 _EXCH_XY_R4( empmr, mythid )
245 CALL EXCH_UV_XY_RS(fu, fv, .TRUE., myThid)
246 #ifdef SHORTWAVE_HEATING
247 _EXCH_XY_R4( qsw, mythid )
248 #endif
249 #ifdef ALLOW_CLIMSST_RELAXATION
250 _EXCH_XY_R4( sst, mythid )
251 #endif
252 #ifdef ALLOW_CLIMSSS_RELAXATION
253 _EXCH_XY_R4( sss, mythid )
254 #endif
255 #ifdef ATMOSPHERIC_LOADING
256 _EXCH_XY_R4( pload, mythid )
257 #endif
258
259 RETURN
260 END

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