/[MITgcm]/MITgcm/pkg/fizhi/update_earth_exports.F
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Contents of /MITgcm/pkg/fizhi/update_earth_exports.F

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Revision 1.8 - (show annotations) (download)
Thu Jun 10 20:53:19 2004 UTC (20 years ago) by molod
Branch: MAIN
Changes since 1.7: +32 -22 lines
Developing

1 C $Header: /u/gcmpack/MITgcm/pkg/fizhi/update_earth_exports.F,v 1.2 2004/06/07 18:11:38 molod Exp $
2 C $Name: $
3
4 subroutine update_earth_exports (myTime, myIter, myThid)
5 c----------------------------------------------------------------------
6 c Subroutine update_earth_exports - 'Wrapper' routine to update
7 c the fields related to the earth's surface that are needed
8 c by fizhi.
9 c
10 c Call: getlgr (Set the leaf area index and surface greenness,
11 c based on veg type and month)
12 c getalb (Set the 4 albedos based on veg type, snow and time)
13 c getemiss (Set the surface emissivity based on the veg type
14 c and the snow depth)
15 c-----------------------------------------------------------------------
16 implicit none
17 #include "CPP_OPTIONS.h"
18 #include "SIZE.h"
19 #include "fizhi_land_SIZE.h"
20 #include "fizhi_SIZE.h"
21 #include "fizhi_coms.h"
22 #include "gridalt_mapping.h"
23 #include "fizhi_land_coms.h"
24 #include "fizhi_earth_coms.h"
25 #include "fizhi_ocean_coms.h"
26 #include "EEPARAMS.h"
27
28 integer myTime, myIter, myThid
29
30 _RL lats(sNx,sNy), lons(sNx,sNy), cosz(sNx,sNy)
31 _RL fraci(sNx,sNy), fracl(sNx,sNy)
32 _RL ficetile(nchp)
33 _RL ra
34 integer i, j, L, bi, bj
35 integer im1, im2, jm1, jm2, idim1, idim2, jdim1, jdim2
36 integer sec, day, month
37 integer nmonf,ndayf
38 nmonf(n) = mod(n,10000)/100
39 ndayf(n) = mod(n,100)
40
41 idim1 = 1-OLx
42 idim2 = sNx+OLx
43 jdim1 = 1-OLy
44 jdim2 = sNy+OLy
45 im1 = 1
46 im2 = sNx
47 jm1 = 1
48 jm2 = sNy
49 month = nmonf(nymd)
50 day = ndayf(nymd)
51 sec = nsecf(nhms)
52
53 do bj = myByLo(myThid), myByHi(myThid)
54 do bi = myBxLo(myThid), myBxHi(myThid)
55 do j = jm1,jm2
56 do i = im1,im2
57 lons(i,j,bi,bj) = xC(i,j,bi,bj)
58 lats(i,j,bi,bj) = yC(i,j,bi,bj)
59 enddo
60 enddo
61
62 call get_landfrac(im2,jm2,nSx,nSy,bi,bj,maxtyp,surftype,tilefrac,
63 . fracl)
64 do j = jm1,jm2
65 do i = im1,im2
66 if(sea_ice(i,j,bi,bj).gt.0.) then
67 fraci(i,j) = 1.
68 else
69 fraci(i,j) = 0.
70 endif
71 enddo
72 enddo
73
74 C***********************************************************************
75 C* Get Leaf-Area-Index and Greenness Index *
76 C***********************************************************************
77
78 if( alarm('turb') .or. alarm('radsw') ) then
79 call getlgr (sec,month,day,chlt,ityp,nchpland,nSx,nSy,bi,bj,
80 . alai,agrn )
81 endif
82
83 C **********************************************************************
84 C Compute Surface Albedo
85 C **********************************************************************
86
87 if( alarm('radsw') ) then
88 call astro(nymd,nhms,lats,lons,im2*jm2,cosz,ra)
89 call getalb(sec,month,day,cosz,snodep,fraci,fracl,im2,jm2,nchp,
90 . nchpland,nSx,nSy,bi,bj,igrd,ityp,chfr,chlt,alai,agrn,
91 . albvisdr,albvisdf,albnirdr,albnirdf )
92 endif
93
94
95 C **********************************************************************
96 C Compute Surface Emissivity
97 C **********************************************************************
98
99 if( alarm('radlw') ) then
100 call grd2msc(fraci,im2,jm2,igrd,ficetile,nchp,nchp)
101 call getemiss(fracl,im2,jm2,nchp,nSx,nSy,bi,bj,igrd,ityp,chfr,
102 . snodep,ficetile,emiss)
103 endif
104
105
106 C*********************************************************************
107 C Ground Temperature Over Ocean is from SST array,
108 C*********************************************************************
109
110 do j = 1,jm
111 do i = 1,im
112 if(fracl(i,j).lt.0.3.and.sea_ice(i,j).eq.0.0)tgz(i,j) = sst(i,j)
113 endif
114 enddo
115 enddo
116
117 enddo
118 enddo
119
120 return
121 end
122
123 SUBROUTINE SIBALB ( AVISDR, ANIRDR, AVISDF, ANIRDF,
124 . VLAI, VGRN, ZTH, SNW, ITYP, IRUN )
125
126 C*********************************************************************
127 C The input list is as follows:
128 C VLAI: the leaf area index.
129 C VGRN: the greenness index.
130 C ZTH: The cosine of the solar zenith angle.
131 C SNW: Snow cover in meters water equivalent.
132 C ITYP: The surface type (grass, bare soil, etc.)
133 C IRUN: Number of tiles (same as used for SUBROUTINE TILE).
134 C
135 C The output list is as follows:
136 C
137 C AVISDR: visible, direct albedo.
138 C ANIRDR: near infra-red, direct albedo.
139 C AVISDF: visible, diffuse albedo.
140 C ANIRDF: near infra-red, diffuse albedo.
141 C*******************************************************************
142
143 IMPLICIT NONE
144 #include "CPP_EEOPTIONS.h"
145
146 INTEGER IRUN
147 _RL AVISDR (IRUN), ANIRDR (IRUN), AVISDF (IRUN), ANIRDF (IRUN),
148 ` VLAI (IRUN), VGRN (IRUN), ZTH (IRUN), SNW (IRUN)
149 INTEGER ITYP (IRUN)
150
151 _RL ALVDRS, ALIDRS
152 _RL ALVDRDL, ALIDRDL
153 _RL ALVDRDD, ALIDRDD
154 _RL ALVDRI, ALIDRI
155 _RL minval
156 external minval
157
158 PARAMETER ( ALVDRS = 0.100 ) ! Albedo of soil for visible direct solar radiation.
159 PARAMETER ( ALIDRS = 0.200 ) ! Albedo of soil for infra-red direct solar radiation.
160 PARAMETER ( ALVDRDL = 0.300 ) ! Albedo of light desert for visible direct solar radiation.
161 PARAMETER ( ALIDRDL = 0.350 ) ! Albedo of light desert for infra-red direct solar radiation.
162 PARAMETER ( ALVDRDD = 0.250 ) ! Albedo of dark desert for visible direct solar radiation.
163 PARAMETER ( ALIDRDD = 0.300 ) ! Albedo of dark desert for infra-red direct solar radiation.
164 PARAMETER ( ALVDRI = 0.800 ) ! Albedo of ice for visible direct solar radiation.
165 PARAMETER ( ALIDRI = 0.800 ) ! Albedo of ice for infra-red direct solar radiation.
166
167 * --------------------------------------------------------------------------------------------
168
169 INTEGER NTYPS
170 INTEGER NLAI
171 _RL ZERO, ONE
172 _RL EPSLN, BLAI, DLAI
173 _RL ALATRM
174 PARAMETER (NLAI = 14 )
175 PARAMETER (EPSLN = 1.E-6)
176 PARAMETER (BLAI = 0.5)
177 PARAMETER (DLAI = 0.5)
178 PARAMETER (ZERO=0., ONE=1.0)
179 PARAMETER (ALATRM = BLAI + (NLAI - 1) * DLAI - EPSLN)
180 PARAMETER (NTYPS=10)
181
182
183 C ITYP: Vegetation type as follows:
184 C 1: BROADLEAF EVERGREEN TREES
185 C 2: BROADLEAF DECIDUOUS TREES
186 C 3: NEEDLELEAF TREES
187 C 4: GROUND COVER
188 C 5: BROADLEAF SHRUBS
189 C 6: DWARF TREES (TUNDRA)
190 C 7: BARE SOIL
191 C 8: LIGHT DESERT
192 C 9: GLACIER
193 C 10: DARK DESERT
194 C
195
196
197 * [ Definition of Variables: ]
198 *
199 INTEGER I, LAI
200
201 _RL FAC, GAMMA, BETA, ALPHA,
202 ` DX, DY, ALA, GRN (2),
203 ` SNWALB (4, NTYPS), SNWMID (NTYPS)
204
205 * [ Definition of Functions: ]
206 *
207 _RL COEFF
208
209 C Constants used in albedo calculations:
210
211 _RL ALVDR (NLAI, 2, NTYPS)
212 _RL BTVDR (NLAI, 2, NTYPS)
213 _RL GMVDR (NLAI, 2, NTYPS)
214 _RL ALIDR (NLAI, 2, NTYPS)
215 _RL BTIDR (NLAI, 2, NTYPS)
216 _RL GMIDR (NLAI, 2, NTYPS)
217
218 C (Data statements for ALVDR described in full; data statements for
219 C other constants follow same framework.)
220
221 C BROADLEAF EVERGREEN (ITYP=4); GREEN=0.33; LAI: .5-7
222 DATA (ALVDR (I, 1, 1), I = 1, 14)
223 ` /0.0808, 0.0796, 0.0792, 0.0790, 10*0.0789/
224
225 C BROADLEAF EVERGREEN (ITYP=4); GREEN=0.67; LAI: .5-7
226 DATA (ALVDR (I, 2, 1), I = 1, 14)
227 ` /0.0788, 0.0775, 0.0771, 0.0769, 10*0.0768/
228
229 C BROADLEAF DECIDUOUS (ITYP=1); GREEN=0.33; LAI: .5-7
230 DATA (ALVDR (I, 1, 2), I = 1, 14)
231 ` /0.0803, 0.0790, 0.0785, 0.0784, 3*0.0783, 7*0.0782/
232
233 C BROADLEAF DECIDUOUS (ITYP=1); GREEN=0.67; LAI: .5-7
234 DATA (ALVDR (I, 2, 2), I = 1, 14)
235 ` /0.0782, 0.0770, 0.0765, 0.0763, 10*0.0762/
236
237 C NEEDLELEAF (ITYP=3); GREEN=0.33; LAI=.5-7
238 DATA (ALVDR (I, 1, 3), I = 1, 14)
239 ` /0.0758, 0.0746, 0.0742, 0.0740, 10*0.0739/
240
241 C NEEDLELEAF (ITYP=3); GREEN=0.67; LAI=.5-7
242 DATA (ALVDR (I, 2, 3), I = 1, 14)
243 ` /0.0683, 0.0672, 0.0667, 2*0.0665, 9*0.0664/
244
245 C GROUNDCOVER (ITYP=2); GREEN=0.33; LAI=.5-7
246 DATA (ALVDR (I, 1, 4), I = 1, 14)
247 ` /0.2436, 0.2470, 0.2486, 0.2494, 0.2498, 0.2500, 2*0.2501,
248 ` 6*0.2502
249 ` /
250 C GROUNDCOVER (ITYP=2); GREEN=0.67; LAI=.5-7
251 DATA (ALVDR (I, 2, 4), I = 1, 14) /14*0.1637/
252
253 C BROADLEAF SHRUBS (ITYP=5); GREEN=0.33,LAI=.5-7
254 DATA (ALVDR (I, 1, 5), I = 1, 14)
255 & /0.0807, 0.0798, 0.0794, 0.0792, 0.0792, 9*0.0791/
256
257 C BROADLEAF SHRUBS (ITYP=5); GREEN=0.67,LAI=.5-7
258 DATA (ALVDR (I, 2, 5), I = 1, 14)
259 & /0.0787, 0.0777, 0.0772, 0.0771, 10*0.0770/
260
261 C DWARF TREES, OR TUNDRA (ITYP=6); GREEN=0.33,LAI=.5-7
262 DATA (ALVDR (I, 1, 6), I = 1, 14)
263 & /0.0802, 0.0791, 0.0787, 0.0786, 10*0.0785/
264
265 C DWARF TREES, OR TUNDRA (ITYP=6); GREEN=0.67,LAI=.5-7
266 DATA (ALVDR (I, 2, 6), I = 1, 14)
267 & /0.0781, 0.0771, 0.0767, 0.0765, 0.0765, 9*0.0764/
268
269
270 C BARE SOIL
271 DATA (ALVDR (I, 1, 7), I = 1, 14) /14*ALVDRS/
272 DATA (ALVDR (I, 2, 7), I = 1, 14) /14*ALVDRS/
273
274 C LIGHT DESERT (SAHARA, EG)
275 DATA (ALVDR (I, 1, 8), I = 1, 14) /14*ALVDRDL/
276 DATA (ALVDR (I, 2, 8), I = 1, 14) /14*ALVDRDL/
277
278 C ICE
279 DATA (ALVDR (I, 1, 9), I = 1, 14) /14*ALVDRI/
280 DATA (ALVDR (I, 2, 9), I = 1, 14) /14*ALVDRI/
281
282 C DARK DESERT (AUSTRALIA, EG)
283 DATA (ALVDR (I, 1, 10), I = 1, 14) /14*ALVDRDD/
284 DATA (ALVDR (I, 2, 10), I = 1, 14) /14*ALVDRDD/
285 C****
286 C**** -------------------------------------------------
287 DATA (BTVDR (I, 1, 1), I = 1, 14)
288 ` /0.0153, 0.0372, 0.0506, 0.0587, 0.0630, 0.0652, 0.0663,
289 ` 0.0668, 0.0671, 0.0672, 4*0.0673
290 ` /
291 DATA (BTVDR (I, 2, 1), I = 1, 14)
292 * /0.0135, 0.0354, 0.0487, 0.0568, 0.0611, 0.0633, 0.0644,
293 ` 0.0650, 0.0652, 0.0654, 0.0654, 3*0.0655
294 ` /
295 DATA (BTVDR (I, 1, 2), I = 1, 14)
296 * /0.0148, 0.0357, 0.0462, 0.0524, 0.0554, 0.0569, 0.0576,
297 ` 0.0579, 0.0580, 0.0581, 0.0581, 3*0.0582
298 ` /
299 DATA (BTVDR (I, 2, 2), I = 1, 14)
300 * /0.0131, 0.0342, 0.0446, 0.0508, 0.0539, 0.0554, 0.0560,
301 ` 0.0564, 0.0565, 5*0.0566
302 ` /
303 DATA (BTVDR (I, 1, 3), I = 1, 14)
304 * /0.0108, 0.0334, 0.0478, 0.0571, 0.0624, 0.0652, 0.0666,
305 ` 0.0673, 0.0677, 0.0679, 4*0.0680
306 ` /
307 DATA (BTVDR (I, 2, 3), I = 1, 14)
308 * /0.0034, 0.0272, 0.0408, 0.0501, 0.0554, 0.0582, 0.0597,
309 * 0.0604, 0.0608, 0.0610, 4*0.0611
310 ` /
311 DATA (BTVDR (I, 1, 4), I = 1, 14)
312 * /0.2050, 0.2524, 0.2799, 0.2947, 0.3022, 0.3059, 0.3076,
313 * 0.3085, 0.3088, 0.3090, 4*0.3091
314 ` /
315 DATA (BTVDR (I, 2, 4), I = 1, 14)
316 * /0.1084, 0.1404, 0.1617, 0.1754, 0.1837, 0.1887, 0.1915,
317 * 0.1931, 0.1940, 0.1946, 0.1948, 0.1950, 2*0.1951
318 ` /
319 DATA (BTVDR (I, 1, 5), I = 1, 14)
320 & /0.0203, 0.0406, 0.0548, 0.0632, 0.0679, 0.0703, 0.0716,
321 & 0.0722, 0.0726, 0.0727, 0.0728, 0.0728, 0.0728, 0.0729
322 ` /
323
324 DATA (BTVDR (I, 2, 5), I = 1, 14)
325 & /0.0184, 0.0385, 0.0526, 0.0611, 0.0658, 0.0683, 0.0696,
326 & 0.0702, 0.0705, 0.0707, 4*0.0708
327 ` /
328
329 DATA (BTVDR (I, 1, 6), I = 1, 14)
330 & /0.0199, 0.0388, 0.0494, 0.0554, 0.0584, 0.0599, 0.0606,
331 & 0.0609, 0.0611, 5*0.0612
332 ` /
333
334 DATA (BTVDR (I, 2, 6), I = 1, 14)
335 & /0.0181, 0.0371, 0.0476, 0.0537, 0.0568, 0.0583, 0.0590,
336 & 0.0593, 0.0595, 0.0595, 4*0.0596
337 ` /
338
339 DATA (BTVDR (I, 1, 7), I = 1, 14) /14*0./
340 DATA (BTVDR (I, 2, 7), I = 1, 14) /14*0./
341
342 DATA (BTVDR (I, 1, 8), I = 1, 14) /14*0./
343 DATA (BTVDR (I, 2, 8), I = 1, 14) /14*0./
344
345 DATA (BTVDR (I, 1, 9), I = 1, 14) /14*0./
346 DATA (BTVDR (I, 2, 9), I = 1, 14) /14*0./
347
348 DATA (BTVDR (I, 1, 10), I = 1, 14) /14*0./
349 DATA (BTVDR (I, 2, 10), I = 1, 14) /14*0./
350
351 C****
352 C**** -----------------------------------------------------------
353 DATA (GMVDR (I, 1, 1), I = 1, 14)
354 ` /0.0814, 0.1361, 0.2078, 0.2650, 0.2986, 0.3169, 0.3265,
355 * 0.3313, 0.3337, 0.3348, 0.3354, 0.3357, 2*0.3358
356 ` /
357 DATA (GMVDR (I, 2, 1), I = 1, 14)
358 * /0.0760, 0.1336, 0.2034, 0.2622, 0.2969, 0.3159, 0.3259,
359 * 0.3309, 0.3333, 0.3346, 0.3352, 0.3354, 2*0.3356
360 ` /
361 DATA (GMVDR (I, 1, 2), I = 1, 14)
362 * /0.0834, 0.1252, 0.1558, 0.1927, 0.2131, 0.2237, 0.2290,
363 * 0.2315, 0.2327, 0.2332, 0.2335, 2*0.2336, 0.2337
364 ` /
365 DATA (GMVDR (I, 2, 2), I = 1, 14)
366 * /0.0789, 0.1235, 0.1531, 0.1912, 0.2122, 0.2232, 0.2286,
367 * 0.2312, 0.2324, 0.2330, 0.2333, 0.2334, 2*0.2335
368 ` /
369 DATA (GMVDR (I, 1, 3), I = 1, 14)
370 * /0.0647, 0.1342, 0.2215, 0.2968, 0.3432, 0.3696, 0.3838,
371 * 0.3912, 0.3950, 0.3968, 0.3978, 0.3982, 0.3984, 0.3985
372 ` /
373 DATA (GMVDR (I, 2, 3), I = 1, 14)
374 * /0.0258, 0.1227, 0.1999, 0.2825, 0.3339, 0.3634, 0.3794,
375 * 0.3877, 0.3919, 0.3940, 0.3950, 0.3956, 0.3958, 0.3959
376 ` /
377 DATA (GMVDR (I, 1, 4), I = 1, 14)
378 * /0.3371, 0.5762, 0.7159, 0.7927, 0.8324, 0.8526, 0.8624,
379 * 0.8671, 0.8693, 0.8704, 0.8709, 0.8710, 2*0.8712
380 ` /
381 DATA (GMVDR (I, 2, 4), I = 1, 14)
382 * /0.2634, 0.4375, 0.5532, 0.6291, 0.6763, 0.7048, 0.7213,
383 * 0.7310, 0.7363, 0.7395, 0.7411, 0.7420, 0.7426, 0.7428
384 ` /
385 DATA (GMVDR (I, 1, 5), I = 1, 14)
386 & /0.0971, 0.1544, 0.2511, 0.3157, 0.3548, 0.3768, 0.3886,
387 & 0.3948, 0.3978, 0.3994, 0.4001, 0.4006, 0.4007, 0.4008
388 ` /
389
390 DATA (GMVDR (I, 2, 5), I = 1, 14)
391 & /0.0924, 0.1470, 0.2458, 0.3123, 0.3527, 0.3756, 0.3877,
392 & 0.3942, 0.3974, 0.3990, 0.3998, 0.4002, 0.4004, 0.4005
393 ` /
394
395 DATA (GMVDR (I, 1, 6), I = 1, 14)
396 & /0.0970, 0.1355, 0.1841, 0.2230, 0.2447, 0.2561, 0.2617,
397 & 0.2645, 0.2658, 0.2664, 0.2667, 3*0.2669
398 ` /
399
400 DATA (GMVDR (I, 2, 6), I = 1, 14)
401 & /0.0934, 0.1337, 0.1812, 0.2213, 0.2437, 0.2554, 0.2613,
402 & 0.2642, 0.2656, 0.2662, 0.2665, 0.2667, 0.2667, 0.2668
403 ` /
404
405 DATA (GMVDR (I, 1, 7), I = 1, 14) /14*1./
406 DATA (GMVDR (I, 2, 7), I = 1, 14) /14*1./
407
408 DATA (GMVDR (I, 1, 8), I = 1, 14) /14*1./
409 DATA (GMVDR (I, 2, 8), I = 1, 14) /14*1./
410
411 DATA (GMVDR (I, 1, 9), I = 1, 14) /14*1./
412 DATA (GMVDR (I, 2, 9), I = 1, 14) /14*1./
413
414 DATA (GMVDR (I, 1, 10), I = 1, 14) /14*1./
415 DATA (GMVDR (I, 2, 10), I = 1, 14) /14*1./
416
417 C****
418 C**** -----------------------------------------------------------
419
420 DATA (ALIDR (I, 1, 1), I = 1, 14)
421 * /0.2867, 0.2840, 0.2828, 0.2822, 0.2819, 0.2818, 2*0.2817,
422 * 6*0.2816
423 ` /
424 DATA (ALIDR (I, 2, 1), I = 1, 14)
425 * /0.3564, 0.3573, 0.3577, 0.3580, 2*0.3581, 8*0.3582/
426 DATA (ALIDR (I, 1, 2), I = 1, 14)
427 * /0.2848, 0.2819, 0.2804, 0.2798, 0.2795, 2*0.2793, 7*0.2792/
428 DATA (ALIDR (I, 2, 2), I = 1, 14)
429 * /0.3544, 0.3550, 0.3553, 2*0.3555, 9*0.3556/
430 DATA (ALIDR (I, 1, 3), I = 1, 14)
431 * /0.2350, 0.2311, 0.2293, 0.2285, 0.2281, 0.2280, 8*0.2279/
432 DATA (ALIDR (I, 2, 3), I = 1, 14)
433 * /0.2474, 0.2436, 0.2418, 0.2410, 0.2406, 0.2405, 3*0.2404,
434 * 5*0.2403
435 ` /
436 DATA (ALIDR (I, 1, 4), I = 1, 14)
437 * /0.5816, 0.6157, 0.6391, 0.6556, 0.6673, 0.6758, 0.6820,
438 * 0.6866, 0.6899, 0.6924, 0.6943, 0.6956, 0.6966, 0.6974
439 ` /
440 DATA (ALIDR (I, 2, 4), I = 1, 14)
441 * /0.5489, 0.5770, 0.5955, 0.6079, 0.6163, 0.6221, 0.6261,
442 * 0.6288, 0.6308, 0.6321, 0.6330, 0.6337, 0.6341, 0.6344
443 ` /
444 DATA (ALIDR (I, 1, 5), I = 1, 14)
445 & /0.2845, 0.2837, 0.2832, 0.2831, 0.2830, 9*0.2829/
446 DATA (ALIDR (I, 2, 5), I = 1, 14)
447 & /0.3532, 0.3562, 0.3578, 0.3586, 0.3590, 0.3592, 0.3594,
448 & 0.3594, 0.3594, 5*0.3595
449 ` /
450 DATA (ALIDR (I, 1, 6), I = 1, 14)
451 & /0.2825, 0.2812, 0.2806, 0.2803, 0.2802, 9*0.2801/
452 DATA (ALIDR (I, 2, 6), I = 1, 14)
453 & /0.3512, 0.3538, 0.3552, 0.3559, 0.3562, 0.3564, 0.3565,
454 & 0.3565, 6*0.3566
455 ` /
456
457 DATA (ALIDR (I, 1, 7), I = 1, 14) /14*ALIDRS/
458 DATA (ALIDR (I, 2, 7), I = 1, 14) /14*ALIDRS/
459
460 DATA (ALIDR (I, 1, 8), I = 1, 14) /14*ALIDRDL/
461 DATA (ALIDR (I, 2, 8), I = 1, 14) /14*ALIDRDL/
462
463 DATA (ALIDR (I, 1, 9), I = 1, 14) /14*ALIDRI/
464 DATA (ALIDR (I, 2, 9), I = 1, 14) /14*ALIDRI/
465
466 DATA (ALIDR (I, 1, 10), I = 1, 14) /14*ALIDRDD/
467 DATA (ALIDR (I, 2, 10), I = 1, 14) /14*ALIDRDD/
468
469 C****
470 C**** -----------------------------------------------------------
471 DATA (BTIDR (I, 1, 1), I = 1, 14)
472 * /0.1291, 0.1707, 0.1969, 0.2125, 0.2216, 0.2267, 0.2295,
473 * 0.2311, 0.2319, 0.2323, 0.2326, 2*0.2327, 0.2328
474 ` /
475 DATA (BTIDR (I, 2, 1), I = 1, 14)
476 * /0.1939, 0.2357, 0.2598, 0.2735, 0.2810, 0.2851, 0.2874,
477 * 0.2885, 0.2892, 0.2895, 0.2897, 3*0.2898
478 ` /
479 DATA (BTIDR (I, 1, 2), I = 1, 14)
480 * /0.1217, 0.1522, 0.1713, 0.1820, 0.1879, 0.1910, 0.1926,
481 * 0.1935, 0.1939, 0.1942, 2*0.1943, 2*0.1944
482 ` /
483 DATA (BTIDR (I, 2, 2), I = 1, 14)
484 * /0.1781, 0.2067, 0.2221, 0.2301, 0.2342, 0.2363, 0.2374,
485 * 0.2379, 0.2382, 0.2383, 2*0.2384, 2*0.2385
486 ` /
487 DATA (BTIDR (I, 1, 3), I = 1, 14)
488 * /0.0846, 0.1299, 0.1614, 0.1814, 0.1935, 0.2004, 0.2043,
489 * 0.2064, 0.2076, 0.2082, 0.2085, 2*0.2087, 0.2088
490 ` /
491 DATA (BTIDR (I, 2, 3), I = 1, 14)
492 * /0.0950, 0.1410, 0.1722, 0.1921, 0.2042, 0.2111, 0.2151,
493 * 0.2172, 0.2184, 0.2191, 0.2194, 0.2196, 2*0.2197
494 ` /
495 DATA (BTIDR (I, 1, 4), I = 1, 14)
496 * /0.5256, 0.7444, 0.9908, 1.2700, 1.5680, 1.8505, 2.0767,
497 * 2.2211, 2.2808, 2.2774, 2.2362, 2.1779, 2.1160, 2.0564
498 ` /
499 DATA (BTIDR (I, 2, 4), I = 1, 14)
500 * /0.4843, 0.6714, 0.8577, 1.0335, 1.1812, 1.2858, 1.3458,
501 * 1.3688, 1.3685, 1.3546, 1.3360, 1.3168, 1.2989, 1.2838
502 ` /
503 DATA (BTIDR (I, 1, 5), I = 1, 14)
504 & /0.1498, 0.1930, 0.2201, 0.2364, 0.2460, 0.2514, 0.2544,
505 & 0.2560, 0.2569, 0.2574, 0.2577, 0.2578, 0.2579, 0.2579
506 ` /
507
508 DATA (BTIDR (I, 2, 5), I = 1, 14)
509 & /0.2184, 0.2656, 0.2927, 0.3078, 0.3159, 0.3202, 0.3224,
510 & 0.3235, 0.3241, 0.3244, 0.3245, 3*0.3246
511 ` /
512
513 DATA (BTIDR (I, 1, 6), I = 1, 14)
514 & /0.1369, 0.1681, 0.1860, 0.1958, 0.2010, 0.2038, 0.2053,
515 & 0.2060, 0.2064, 0.2066, 0.2067, 3*0.2068
516 ` /
517
518 DATA (BTIDR (I, 2, 6), I = 1, 14)
519 & /0.1969, 0.2268, 0.2416, 0.2488, 0.2521, 0.2537, 0.2544,
520 & 0.2547, 0.2548, 5*0.2549
521 ` /
522
523
524 DATA (BTIDR (I, 1, 7), I = 1, 14) /14*0./
525 DATA (BTIDR (I, 2, 7), I = 1, 14) /14*0./
526
527 DATA (BTIDR (I, 1, 8), I = 1, 14) /14*0./
528 DATA (BTIDR (I, 2, 8), I = 1, 14) /14*0./
529
530 DATA (BTIDR (I, 1, 9), I = 1, 14) /14*0./
531 DATA (BTIDR (I, 2, 9), I = 1, 14) /14*0./
532
533 DATA (BTIDR (I, 1, 10), I = 1, 14) /14*0./
534 DATA (BTIDR (I, 2, 10), I = 1, 14) /14*0./
535
536 C****
537 C**** --------------------------------------------------------------
538 DATA (GMIDR (I, 1, 1), I = 1, 14)
539 * /0.1582, 0.2581, 0.3227, 0.3635, 0.3882, 0.4026, 0.4108,
540 * 0.4154, 0.4179, 0.4193, 0.4200, 0.4204, 0.4206, 0.4207
541 ` /
542 DATA (GMIDR (I, 2, 1), I = 1, 14)
543 * /0.1934, 0.3141, 0.3818, 0.4200, 0.4415, 0.4533, 0.4598,
544 * 0.4633, 0.4651, 0.4662, 0.4667, 0.4671, 2*0.4672
545 ` /
546 DATA (GMIDR (I, 1, 2), I = 1, 14)
547 * /0.1347, 0.1871, 0.2277, 0.2515, 0.2651, 0.2727, 0.2768,
548 * 0.2790, 0.2801, 0.2808, 0.2811, 0.2812, 0.2813, 0.2814
549 ` /
550 DATA (GMIDR (I, 2, 2), I = 1, 14)
551 * /0.1440, 0.2217, 0.2629, 0.2839, 0.2947, 0.3003, 0.3031,
552 * 0.3046, 0.3054, 0.3058, 0.3060, 2*0.3061, 0.3062
553 ` /
554 DATA (GMIDR (I, 1, 3), I = 1, 14)
555 * /0.1372, 0.2368, 0.3235, 0.3839, 0.4229, 0.4465, 0.4602,
556 * 0.4679, 0.4722, 0.4745, 0.4758, 0.4764, 0.4768, 0.4770
557 ` /
558 DATA (GMIDR (I, 2, 3), I = 1, 14)
559 * /0.1435, 0.2524, 0.3370, 0.3955, 0.4332, 0.4563, 0.4697,
560 * 0.4773, 0.4815, 0.4839, 0.4851, 0.4858, 0.4861, 0.4863
561 ` /
562 DATA (GMIDR (I, 1, 4), I = 1, 14)
563 * /0.4298, 0.9651, 1.6189, 2.4084, 3.2992, 4.1928, 4.9611,
564 * 5.5095, 5.8085, 5.9069, 5.8726, 5.7674, 5.6346, 5.4944
565 ` /
566 DATA (GMIDR (I, 2, 4), I = 1, 14)
567 * /0.4167, 0.8974, 1.4160, 1.9414, 2.4147, 2.7803, 3.0202,
568 * 3.1468, 3.1954, 3.1932, 3.1676, 3.1328, 3.0958, 3.0625
569 ` /
570 DATA (GMIDR (I, 1, 5), I = 1, 14)
571 & /0.1959, 0.3203, 0.3985, 0.4472, 0.4766, 0.4937, 0.5034,
572 & 0.5088, 0.5117, 0.5134, 0.5143, 0.5147, 0.5150, 0.5152
573 ` /
574
575 DATA (GMIDR (I, 2, 5), I = 1, 14)
576 & /0.2328, 0.3859, 0.4734, 0.5227, 0.5498, 0.5644, 0.5720,
577 & 0.5761, 0.5781, 0.5792, 0.5797, 0.5800, 0.5802, 0.5802
578 ` /
579
580 DATA (GMIDR (I, 1, 6), I = 1, 14)
581 & /0.1447, 0.2244, 0.2698, 0.2953, 0.3094, 0.3170, 0.3211,
582 & 0.3233, 0.3244, 0.3250, 0.3253, 0.3255, 0.3256, 0.3256
583 ` /
584
585 DATA (GMIDR (I, 2, 6), I = 1, 14)
586 & /0.1643, 0.2624, 0.3110, 0.3347, 0.3461, 0.3517, 0.3543,
587 & 0.3556, 0.3562, 0.3564, 0.3565, 0.3566, 0.3566, 0.3566
588 ` /
589
590 DATA (GMIDR (I, 1, 7), I = 1, 14) /14*1./
591 DATA (GMIDR (I, 2, 7), I = 1, 14) /14*1./
592
593 DATA (GMIDR (I, 1, 8), I = 1, 14) /14*1./
594 DATA (GMIDR (I, 2, 8), I = 1, 14) /14*1./
595
596 DATA (GMIDR (I, 1, 9), I = 1, 14) /14*1./
597 DATA (GMIDR (I, 2, 9), I = 1, 14) /14*1./
598
599 DATA (GMIDR (I, 1, 10), I = 1, 14) /14*1./
600 DATA (GMIDR (I, 2, 10), I = 1, 14) /14*1./
601
602
603 C**** -----------------------------------------------------------
604
605 DATA GRN /0.33, 0.67/
606
607 include 'snwmid.h'
608 DATA SNWALB /.65, .38, .65, .38,
609 * .65, .38, .65, .38,
610 * .65, .38, .65, .38,
611 * .65, .38, .65, .38,
612 * .65, .38, .65, .38,
613 & .65, .38, .65, .38,
614 & .65, .38, .65, .38,
615 & .65, .38, .65, .38,
616 & .80, .60, .80, .60,
617 & .65, .38, .65, .38
618 ` /
619
620 #if CRAY
621 #if f77
622 cfpp$ expand (coeff)
623 #endif
624 #if f90
625 !DIR$ inline always coeff
626 #endif
627 #endif
628
629 DO 100 I=1,IRUN
630 ALA = MIN (MAX (ZERO, VLAI(I)), ALATRM)
631 LAI = 1 + MAX(0, INT((ALA-BLAI)/DLAI) )
632 DX = (ALA - (BLAI+(LAI-1)*DLAI)) * (ONE/DLAI)
633 DY = (VGRN(I)- GRN(1)) * (ONE/(GRN(2) - GRN(1)))
634
635 ALPHA = COEFF (ALVDR (1, 1, ITYP (I)), NLAI, LAI ,DX, DY)
636 BETA = COEFF (BTVDR (1, 1, ITYP (I)), NLAI, LAI ,DX, DY)
637 GAMMA = COEFF (GMVDR (1, 1, ITYP (I)), NLAI, LAI ,DX, DY)
638
639 AVISDR(I) = ALPHA - ZTH(I)*BETA / (GAMMA+ZTH(I))
640 AVISDF(I) = ALPHA-BETA
641 * + 2.*BETA*GAMMA*(1.-GAMMA*LOG((1.+GAMMA)/GAMMA))
642
643 ALPHA = COEFF (ALIDR (1, 1, ITYP (I)), NLAI, LAI ,DX, DY)
644 BETA = COEFF (BTIDR (1, 1, ITYP (I)), NLAI, LAI ,DX, DY)
645 GAMMA = COEFF (GMIDR (1, 1, ITYP (I)), NLAI, LAI ,DX, DY)
646
647 ANIRDR(I) = ALPHA - ZTH(I)*BETA / (GAMMA+ZTH(I))
648 ANIRDF(I) = ALPHA-BETA
649 * + 2.*BETA*GAMMA*(1.-GAMMA*LOG((1.+GAMMA)/GAMMA))
650
651 IF (SNW (I) .GT. ZERO) THEN
652 FAC = SNW(I) / (SNW(I) + SNWMID(ITYP(I)))
653
654 AVISDR(I) = AVISDR(I) + (SNWALB(1,ITYP(I)) - AVISDR(I)) * FAC
655 ANIRDR(I) = ANIRDR(I) + (SNWALB(2,ITYP(I)) - ANIRDR(I)) * FAC
656 AVISDF(I) = AVISDF(I) + (SNWALB(3,ITYP(I)) - AVISDF(I)) * FAC
657 ANIRDF(I) = ANIRDF(I) + (SNWALB(4,ITYP(I)) - ANIRDF(I)) * FAC
658 ENDIF
659
660 100 CONTINUE
661
662 RETURN
663 END
664 FUNCTION COEFF(TABLE, NTABL, LAI ,DX, DY)
665 #include "CPP_EEOPTIONS.h"
666
667 INTEGER NTABL, LAI
668
669 _RL TABLE (NTABL, 2), DX, DY
670
671 COEFF = (TABLE(LAI, 1)
672 * + (TABLE(LAI ,2) - TABLE(LAI ,1)) * DY ) * (1.0-DX)
673 * + (TABLE(LAI+1,1)
674 * + (TABLE(LAI+1,2) - TABLE(LAI+1,1)) * DY ) * DX
675
676 RETURN
677 END
678
679 SUBROUTINE GETLGR(sec,IMON,IDAY,ALAT,ITYP,NCHPS,nSx,nSy,bi,bj,
680 . ALAI,AGRN)
681 C*********************************************************************
682 implicit none
683 #include "CPP_EEOPTIONS.h"
684
685 integer ntyps
686 _RL one,daylen
687 PARAMETER (NTYPS=10)
688 parameter (one = 1.)
689 parameter (daylen = 86400.)
690
691 integer sec, imon, iday, nchps, nSx, nSy, bi, bj
692 _RL ALAI(NCHPS,nSx,nSy), AGRN(NCHPS,nSx,nSy)
693 _RL ALAT(NCHPS)
694 integer ITYP(NCHPS,nSx,nSy)
695
696 integer i,midmon,midm,midp,id,k1,k2,kk1,kk2
697 _RL fac
698
699 INTEGER DAYS(12)
700 DATA DAYS/31,28,31,30,31,30,31,31,30,31,30,31/
701
702 _RL VGLA(12,NTYPS), VGGR(12,NTYPS)
703
704 DATA VGLA /
705 1 5.117, 5.117, 5.117, 5.117, 5.117, 5.117, 5.117, 5.117,
706 1 5.117, 5.117, 5.117, 5.117,
707 2 0.520, 0.520, 0.867, 2.107, 4.507, 6.773, 7.173, 6.507,
708 2 5.040, 2.173, 0.867, 0.520,
709 3 8.760, 9.160, 9.827,10.093,10.360,10.760,10.493,10.227,
710 3 10.093, 9.827, 9.160, 8.760,
711 4 0.782, 0.893, 1.004, 1.116, 1.782, 3.671, 4.782, 4.227,
712 4 2.004, 1.227, 1.004, 0.893,
713 5 3.760, 3.760, 2.760, 1.760, 1.760, 1.760, 1.760, 5.760,
714 5 10.760, 7.760, 4.760, 3.760,
715 6 0.739, 0.739, 0.739, 0.739, 0.739, 1.072, 5.072, 5.739,
716 6 4.405, 0.739, 0.739, 0.739,
717 7 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001,
718 7 0.001, 0.001, 0.001, 0.001,
719 8 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001,
720 8 0.001, 0.001, 0.001, 0.001,
721 9 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001,
722 9 0.001, 0.001, 0.001, 0.001,
723 1 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001,
724 1 0.001, 0.001, 0.001, 0.001
725 & /
726
727
728 DATA VGGR
729 1 /0.905, 0.905, 0.905, 0.905, 0.905, 0.905, 0.905, 0.905,
730 1 0.905, 0.905, 0.905, 0.905,
731 2 0.026, 0.026, 0.415, 0.759, 0.888, 0.925, 0.836, 0.697,
732 2 0.331, 0.166, 0.015, 0.026,
733 3 0.913, 0.917, 0.923, 0.925, 0.927, 0.905, 0.902, 0.913,
734 3 0.898, 0.855, 0.873, 0.913,
735 4 0.568, 0.622, 0.664, 0.697, 0.810, 0.908, 0.813, 0.394,
736 4 0.443, 0.543, 0.553, 0.498,
737 5 0.798, 0.532, 0.362, 0.568, 0.568, 0.568, 0.568, 0.868,
738 5 0.651, 0.515, 0.630, 0.798,
739 6 0.451, 0.451, 0.451, 0.451, 0.451, 0.622, 0.920, 0.697,
740 6 0.076, 0.451, 0.451, 0.451,
741 7 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001,
742 7 0.001, 0.001, 0.001, 0.001,
743 8 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001,
744 8 0.001, 0.001, 0.001, 0.001,
745 9 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001,
746 9 0.001, 0.001, 0.001, 0.001,
747 1 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001, 0.001,
748 1 0.001, 0.001, 0.001, 0.001
749 & /
750
751
752 MIDMON = DAYS(IMON)/2 + 1
753
754
755 IF (IDAY .LT. MIDMON) THEN
756 K2 = IMON
757 K1 = MOD(IMON+10,12) + 1
758 ELSE
759 K1 = IMON
760 K2 = MOD(IMON,12) + 1
761 ENDIF
762
763 IF (IDAY .LT. MIDMON) THEN
764 MIDM = DAYS(K1)/2 + 1
765 MIDP = DAYS(K1) + MIDMON
766 ID = IDAY + DAYS(K1)
767 ELSE
768 MIDM = MIDMON
769 MIDP = DAYS(K2)/2 + 1 + DAYS(K1)
770 ID = IDAY
771 ENDIF
772
773 FAC = (float(ID -MIDM)*DAYLEN + SEC) /
774 * (float(MIDP-MIDM)*DAYLEN )
775
776 DO 220 I=1,NCHPS
777
778 IF(ALAT(I).GT.0.) THEN
779 KK1 = K1
780 KK2 = K2
781 ELSE
782 KK1 = MOD(K1+5,12) + 1
783 KK2 = MOD(K2+5,12) + 1
784 ENDIF
785
786 ALAI(I,bi,bj) = VGLA(KK2,ITYP(I,bi,bj))*FAC+
787 . VGLA(KK1,ITYP(I,bi,bj))*(ONE-FAC)
788 AGRN(I,bi,bj) = VGGR(KK2,ITYP(I,bi,bj))*FAC+
789 . VGGR(KK1,ITYP(I,bi,bj))*(ONE-FAC)
790
791 220 CONTINUE
792
793 RETURN
794 END
795
796 subroutine getalb(sec,month,day,cosz,snodep,fraci,fracg,im,jm,
797 . nchp,nchpland,nSx,nSy,bi,bj,igrd,ityp,chfr,chlt,
798 . alai,agrn,albvr,albvf,albnr,albnf)
799 C***********************************************************************
800 C PURPOSE
801 C To act as an interface to routine sibalb, which calculates
802 C the four albedos for use by the shortwave radiation routine
803 C
804 C INPUT:
805 C sec - number of seconds into the day of current time
806 C month - month of the year of current time
807 C day - day of the month of current time
808 C cosz - local cosine of the zenith angle [im,jm]
809 C snodep - snow cover in meters [nchp,nSx,nSy]
810 C fraci - real array in grid space of total sea ice fraction [im,jm]
811 C fracg - real array in grid space of total land fraction [im,jm]
812 C im - model grid longitude dimension
813 C jm - model grid latitude dimension (number of lat. points)
814 C nchp - integer actual number of tiles in tile space
815 C nchpland - integer number of land tiles
816 C nSx - number of processors in x-direction
817 C nSy - number of processors in y-direction
818 C bi - processors index in x-direction
819 C bj - processors index in y-direction
820 C igrd - integer array in tile space of grid point number for each
821 C tile [nchp,nSx,nSy]
822 C ityp - integer array in tile space of land surface type for each
823 C tile [nchp,nSx,nSy]
824 C chfr - real array in tile space of land surface type fraction for
825 C each tile [nchp,nSx,nSy]
826 C chlt - real array in tile space of latitude value for each tile
827 C [nchp,nSx,nSy]
828 C
829 C OUTPUT:
830 C albvr - real array [im,jm] of visible direct beam albedo
831 C albvf - real array [im,jm] of visible diffuse beam albedo
832 C albnr - real array [im,jm] of near-ir direct beam albedo
833 C albnf - real array [im,jm] of near-ir diffuse beam albedo
834 C
835 C***********************************************************************
836 implicit none
837 #include "CPP_EEOPTIONS.h"
838
839 integer sec,month,day,im,jm,nchp,nchpland,nSx,nSy,bi,bj
840 _RL cosz(im,jm),fraci(im,jm),fracg(im,jm)
841 _RL snodep(nchp,nSx,nSy),chfr(nchp,nSx,nSy),chlt(nchp,nSx,nSy)
842 integer igrd(nchp,nSx,nSy),ityp(nchp,nSx,nSy)
843 _RL alai(nchp,nSx,nSy),agrn(nchp,nSx,nSy)
844 _RL albvr(im,jm,nSx,nSy),albvf(im,jm,nSx,nSy)
845 _RL albnr(im,jm,nSx,nSy),albnf(im,jm,nSx,nSy)
846
847 _RL one,a0,a1,a2,a3,ocnalb,albsi
848 PARAMETER (one = 1.)
849 PARAMETER (A0= 0.40670980)
850 PARAMETER (A1=-1.2523634 )
851 PARAMETER (A2= 1.4224051 )
852 PARAMETER (A3=-0.55573341)
853 PARAMETER (OCNALB=0.08)
854 PARAMETER (ALBSI=0.7)
855
856 _RL alboc(im,jm)
857 _RL AVISDR(nchp),ANIRDR(nchp),AVISDF(nchp)
858 _RL ANIRDF(nchp),zenith(nchp)
859 integer i,j
860
861 DO I=1,IM
862 DO J=1,JM
863 ALBOC(I,J) = A0 + (A1 + (A2 + A3*cosz(I,J))*cosz(I,J))*cosz(I,J)
864 ALBVR(I,J) = ALBSI * FRACI(I,J) + ALBOC(I,J) * (ONE-FRACI(I,J))
865 ALBNR(I,J) = ALBVR(I,J)
866 ALBVF(I,J) = ALBSI * FRACI(I,J) + OCNALB * (ONE-FRACI(I,J))
867 ALBNF(I,J) = ALBVF(I,J)
868 ENDDO
869 ENDDO
870
871
872 C and now some conversions from grid space to tile space before sibalb
873
874 call grd2msc(cosz,im,jm,igrd,zenith,nchp,nchpland)
875
876 C and now call sibalb
877
878 call sibalb(avisdr,anirdr,avisdf,anirdf,alai(1,bi,bj),
879 . agrn(1,bi,bj),zenith,snodep(1,bi,bj),ityp(1,bi,bj),nchpland)
880
881 C finally some transformations back to grid space for albedos
882
883 call msc2grd(igrd(1,bi,bj),chfr(1,bi,bj),avisdr,nchp,nchpland,
884 . fracg,albvr(1,bi,bj),im,jm)
885 call msc2grd(igrd(1,bi,bj),chfr(1,bi,bj),avisdf,nchp,nchpland,
886 . fracg,albvf(1,bi,bj),im,jm)
887 call msc2grd(igrd(1,bi,bj),chfr(1,bi,bj),anirdr,nchp,nchpland,
888 . fracg,albnr(1,bi,bj),im,jm)
889 call msc2grd(igrd(1,bi,bj),chfr(1,bi,bj),anirdf,nchp,nchpland,
890 . fracg,albnf(1,bi,bj),im,jm)
891
892 return
893 end
894
895 subroutine getemiss(fracg,im,jm,nchp,nSx,nSy,bi,bj,igrd,ityp,
896 . chfr,snowdep,fraci,emiss)
897 C***********************************************************************
898 C PURPOSE
899 C To act as an interface to routine to emissivity, which calculates
900 C ten bands of surface emissivities for use by the longwave radiation
901 C
902 C INPUT:
903 C fracg - real array in grid space of total land fraction [im,jm]
904 C im - model grid longitude dimension
905 C jm - model grid latitude dimension (number of lat. points)
906 C nchp - integer actual number of tiles in tile space
907 C nSx - number of processors in x-direction
908 C nSy - number of processors in y-direction
909 C bi - processors index in x-direction
910 C bj - processors index in y-direction
911 C igrd - integer array in tile space of grid point number for each
912 C tile [nchp]
913 C ityp - integer array in tile space of land surface type for each
914 C tile [nchp]
915 C chfr - real array in tile space of land surface type fraction for
916 C each tile [nchp]
917 C snowdep - real array in tile space of snow depth (liquid water equiv)
918 C in mm [nchp]
919 C fraci - real array in tile space of sea ice fraction [nchp]
920 C
921 C OUTPUT:
922 C emiss - real array [im,jm,10,nSx,nSy] - surface emissivity (frac)
923 C
924 C***********************************************************************
925 implicit none
926 #include "CPP_EEOPTIONS.h"
927 integer im,jm,nchp,nSx,nSy,bi,bj
928 _RL fracg(im,jm)
929 _RL chfr(nchp,nSx,nSy)
930 integer igrd(nchp,nSx,nSy), ityp(nchp,nSx,nSy)
931 _RL snowdep(nchp,nSx,nSy),fraci(nchp)
932 _RL emiss(im,jm,10,nSx,nSy)
933
934 _RL emisstile(nchp,10)
935 integer i,j,k,n
936
937 do i = 1,10
938 do n = 1,nchp
939 emisstile(n,i) = 1.
940 enddo
941 enddo
942
943 c call emissivity to get values in tile space
944 c -------------------------------------------
945 call emissivity(snowdep(1,bi,bj),fraci,nchp,ityp(1,bi,bj),
946 . emisstile)
947
948 c transform back to grid space for emissivities
949 c ---------------------------------------------
950 do k = 1,10
951 do j = 1,jm
952 do i = 1,im
953 emiss(i,j,k) = 0.0
954 enddo
955 enddo
956 call msc2grd(igrd(1,bi,bj),chfr(1,bi,bj),emisstile(1,k),nchp,nchp,
957 . fracg,emiss(1,1,k,bi,bj),im,jm)
958 enddo
959
960 return
961 end
962
963 subroutine emissivity (snowdepth,fraci,numpts,ityp,newemis)
964 implicit none
965 #include "CPP_EEOPTIONS.h"
966 integer numpts
967 integer ityp(numpts)
968 _RL snowdepth(numpts),fraci(numpts)
969 _RL newemis(numpts,10)
970
971 _RL emis(12,11)
972 _RL snwmid(10)
973 _RL fac
974 integer i,j
975
976 c-----------------------------------------------------------------------
977 c NOTE: Emissivities were obtained for the following surface types:
978 c ( 1) evergreen needleleaf = conifer
979 c ( 2) evergreen broadleaf = conifer
980 c ( 3) deciduous needleleaf = deciduous
981 c ( 4) deciduous broadleaf = deciduous
982 c ( 5) mixed forests = 1/2 conifer + 1/2 deciduous = tree
983 c ( 6) closed shrublands = 3/4 tree + 1/4 quartz
984 c ( 7) open shrubland = 1/4 tree + 3/4 quartz
985 c ( 8) woody savannas = grass
986 c ( 9) savannas = grass
987 c (10) grasslands = grass
988 c (11) permanent wetlands = 1/2 grass + 1/2 water
989 c (12) croplands = grass
990 c (13) urban = black body
991 c (14) mosaic = 1/2 grass + 1/2 mixed forest
992 c (15) snow/ice
993 c (16) barren/sparsely vegetated = desert(quartz)
994 c (17) water
995 c (18) tundra = frost
996 c
997 c NOTE: Translation to Koster-Suarez surface types was as follows:
998 c ( 1) broadleaf evergreen FROM above type 1 (conifer)
999 c ( 2) broadleaf deciduous FROM above type 2 (deciduous)
1000 c ( 3) needleleaf evergreen FROM above type 1 (conifer)
1001 c ( 4) groundcover FROM above type 10 (grass)
1002 c ( 5) broadleaf shrubs FROM above type 6 (closed shrublands)
1003 c ( 6) dwarf trees (tundra) FROM above type 18 (tundra)
1004 c ( 7) bare soil FROM above type 16 (desert)
1005 c ( 8) light desert FROM above type 16 (desert)
1006 c ( 9) glacier FROM above type 15 (snow/ice)
1007 c ( 10) dark desert FROM above type 16 (desert)
1008 c (100) ocean FROM above type 17 (water)
1009 c
1010 c NOTE: snow-covered ground uses interpolated emissivities based on snow depth
1011 c =============================================================================
1012 c -----------------------------------------------------------------------------
1013 c Emmissivities for 12 bands in Fu/Liou
1014 c band 1: 4.5 - 5.3 um
1015 c band 2: 5.3 - 5.9 um
1016 c band 3: 5.9 - 7.1 um
1017 c band 4: 7.1 - 8.0 um
1018 c band 5: 8.0 - 9.1 um
1019 c band 6: 9.1 - 10.2 um
1020 c band 7: 10.2 - 12.5 um
1021 c band 8: 12.5 - 14.9 um
1022 c band 9: 14.9 - 18.5 um
1023 c band 10: 18.5 - 25.0 um
1024 c band 11: 25.0 - 35.7 um
1025 c band 12: 35.7 - oo um
1026 c
1027 c-------------------------------------------------------------------------
1028 data ((emis(i,j),i=1,12),j=1,11) /
1029 & 0.9891, 0.9892, 0.9900, 0.9914, 0.9908, 0.9903, ! evergreen needleleaf
1030 & 0.9898, 0.9948, 1.0000, 1.0000, 1.0000, 1.0000,
1031 & 0.9849, 0.9856, 0.9841, 0.9831, 0.9789, 0.9805, ! deciduous needleleaf
1032 & 0.9733, 0.9869, 1.0000, 1.0000, 1.0000, 1.0000,
1033 & 0.9891, 0.9892, 0.9900, 0.9914, 0.9908, 0.9903, ! evergreen needleleaf
1034 & 0.9898, 0.9948, 1.0000, 1.0000, 1.0000, 1.0000,
1035 & 0.9867, 0.9897, 0.9920, 0.9933, 0.9830, 0.9752, ! grasslands
1036 & 0.9853, 0.9928, 1.0000, 1.0000, 1.0000, 1.0000,
1037 & 0.9490, 0.9697, 0.9738, 0.9712, 0.9474, 0.9582, ! closed shrublands
1038 & 0.9663, 0.9747, 0.9836, 0.9836, 0.9836, 0.9836,
1039 & 0.9469, 0.9670, 0.9883, 0.9795, 0.9751, 0.9767, ! tundra
1040 & 0.9920, 0.9888, 0.9888, 0.9888, 0.9888, 0.9888,
1041 & 0.8353, 0.9163, 0.9342, 0.9229, 0.8354, 0.8766, ! barren
1042 & 0.9210, 0.9262, 0.9345, 0.9345, 0.9345, 0.9345,
1043 & 0.8353, 0.9163, 0.9342, 0.9229, 0.8354, 0.8766, ! barren
1044 & 0.9210, 0.9262, 0.9345, 0.9345, 0.9345, 0.9345,
1045 & 0.9998, 0.9998, 0.9998, 0.9998, 0.9998, 0.9999, ! snow/ice
1046 & 0.9997, 0.9994, 0.9995, 0.9995, 0.9995, 0.9995,
1047 & 0.8353, 0.9163, 0.9342, 0.9229, 0.8354, 0.8766, ! barren
1048 & 0.9210, 0.9262, 0.9345, 0.9345, 0.9345, 0.9345,
1049 & 0.9788, 0.9833, 0.9819, 0.9820, 0.9835, 0.9865, ! water
1050 & 0.9886, 0.9719, 0.9719, 0.9719, 0.9719, 0.9719/
1051
1052 include 'snwmid.h'
1053
1054 c Convert to the 10 bands needed by Chou Radiation
1055 c ------------------------------------------------
1056 do i=1,numpts
1057
1058 c land points
1059 c------------
1060 if(ityp(i).le.10)then
1061 newemis(i, 1) = (emis( 1,ityp(i))+emis(2,ityp(i)))/2.
1062 newemis(i, 2) = (emis( 2,ityp(i))+emis(3,ityp(i)))/2.
1063 newemis(i, 3) = (emis( 4,ityp(i))+emis(5,ityp(i)))/2.
1064 newemis(i, 4) = emis( 6,ityp(i))
1065 newemis(i, 5) = emis( 7,ityp(i))
1066 newemis(i, 6) = emis( 8,ityp(i))
1067 newemis(i, 7) = emis( 9,ityp(i))
1068 newemis(i, 8) = (emis(10,ityp(i))+emis(11,ityp(i)))/2.
1069 newemis(i, 9) = emis(12,ityp(i))
1070 newemis(i,10) = emis( 4,ityp(i))
1071
1072 c modify emissivity for snow based on snow depth (like albedo)
1073 c-------------------------------------------------------------
1074 if(snowdepth (i).gt.0.) then
1075 fac = snowdepth(i) / (snowdepth(i) + snwmid(ityp(i)))
1076 newemis(i, 1) = newemis(i, 1) + (((emis( 1,9)+emis( 2,9))/2.) - newemis(i, 1)) * fac
1077 newemis(i, 2) = newemis(i, 2) + (((emis( 2,9)+emis( 3,9))/2.) - newemis(i, 2)) * fac
1078 newemis(i, 3) = newemis(i, 3) + (((emis( 4,9)+emis( 5,9))/2.) - newemis(i, 3)) * fac
1079 newemis(i, 4) = newemis(i, 4) + (emis( 6,9) - newemis(i, 4)) * fac
1080 newemis(i, 5) = newemis(i, 5) + (emis( 7,9) - newemis(i, 5)) * fac
1081 newemis(i, 6) = newemis(i, 6) + (emis( 8,9) - newemis(i, 6)) * fac
1082 newemis(i, 7) = newemis(i, 7) + (emis( 9,9) - newemis(i, 7)) * fac
1083 newemis(i, 8) = newemis(i, 8) + (((emis(10,9)+emis(11,9))/2.) - newemis(i, 8)) * fac
1084 newemis(i, 9) = newemis(i, 9) + (emis(12,9) - newemis(i, 9)) * fac
1085 newemis(i,10) = newemis(i,10) + (emis( 4,9) - newemis(i,10)) * fac
1086 endif
1087
1088 c open water
1089 c-----------
1090 else
1091 if(fraci(i).eq.0.)then
1092 newemis(i, 1) = (emis( 1,11)+emis(2,11))/2.
1093 newemis(i, 2) = (emis( 2,11)+emis(3,11))/2.
1094 newemis(i, 3) = (emis( 4,11)+emis(5,11))/2.
1095 newemis(i, 4) = emis( 6,11)
1096 newemis(i, 5) = emis( 7,11)
1097 newemis(i, 6) = emis( 8,11)
1098 newemis(i, 7) = emis( 9,11)
1099 newemis(i, 8) = (emis(10,11)+emis(11,11))/2.
1100 newemis(i, 9) = emis(12,11)
1101 newemis(i,10) = emis( 4,11)
1102
1103 c sea ice (like glacier and snow)
1104 c--------------------------------
1105 else
1106 newemis(i, 1) = (emis( 1,9)+emis(2,9))/2.
1107 newemis(i, 2) = (emis( 2,9)+emis(3,9))/2.
1108 newemis(i, 3) = (emis( 4,9)+emis(5,9))/2.
1109 newemis(i, 4) = emis( 6,9)
1110 newemis(i, 5) = emis( 7,9)
1111 newemis(i, 6) = emis( 8,9)
1112 newemis(i, 7) = emis( 9,9)
1113 newemis(i, 8) = (emis(10,9)+emis(11,9))/2.
1114 newemis(i, 9) = emis(12,9)
1115 newemis(i,10) = emis( 4,9)
1116 endif
1117 endif
1118 enddo
1119
1120 return
1121 end
1122 subroutine get_landfrac(im,jm,nSx,nSy,bi,bj,maxtyp,surftype,
1123 . tilefrac,frac)
1124 C***********************************************************************
1125 C Purpose
1126 C To compute the total fraction of land within a model grid-box
1127 C
1128 C***********************************************************************
1129 implicit none
1130 #include "CPP_EEOPTIONS.h"
1131
1132 integer i,j,nSx,nSy,bi,bj,maxtyp
1133 integer surftype(im,jm,nSx,nSy)
1134 _RL surftype(im,jm,nSx,nSy)
1135 _RL frac(im,jm)
1136
1137 integer i,j,k
1138
1139 do j=1,jm
1140 do i=1,im
1141 frac(i,j) = 0.0
1142 enddo
1143 enddo
1144
1145 do k=1,maxtyp
1146 do j=1,jm
1147 do i=1,im
1148 if(surftype(i,j,k,bi,bj).lt.100.and.
1149 tilefrac(i,j,k,bi,bj).gt.0.0)then
1150 frac(i,j) = frac(i,j) + tilefrac(i,j,k,bi,bj)
1151 endif
1152 enddo
1153 enddo
1154 enddo
1155
1156 return
1157 end

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