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module_ra_gsfcsw.F @ 3094

Last change on this file since 3094 was 11, checked in by aslmd, 14 years ago
spiga@svn-planeto:ajoute le modele meso-echelle martien
File size: 107.8 KB

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1	!Comment the following out to turn off aerosol-radiation
2	!feedback between MOSAIC and GSFCSW. wig, 21-Feb-2005
3	#ifdef WRF_CHEM
4	#define AER_RA_FEEDBACK
5	#endif
6
7	MODULE module_ra_gsfcsw
8
9	REAL, PARAMETER, PRIVATE :: thresh=1.e-9
10	REAL, SAVE :: center_lat
11
12	! Assign co2 and trace gases amount (units are parts/part by volumn)
13
14	REAL, PARAMETER, PRIVATE :: co2 = 300.e-6
15
16	CONTAINS
17
18	!------------------------------------------------------------------
19	! urban related variable are added to arguments of gsfcswrad
20	!------------------------------------------------------------------
21	SUBROUTINE GSFCSWRAD(rthraten,gsw,xlat,xlong &
22	,dz8w,rho_phy &
23	,alb,t3d,qv3d,qc3d,qr3d &
24	,qi3d,qs3d,qg3d &
25	,p3d,p8w3d,pi3d,cldfra3d &
26	,gmt,cp,g,julday,xtime,declin,solcon &
27	,radfrq,degrad,taucldi,taucldc,warm_rain &
28	,tauaer300,tauaer400,tauaer600,tauaer999 & ! jcb
29	,gaer300,gaer400,gaer600,gaer999 & ! jcb
30	,waer300,waer400,waer600,waer999 & ! jcb
31	,f_qv,f_qc,f_qr,f_qi,f_qs,f_qg &
32	,ids,ide, jds,jde, kds,kde &
33	,ims,ime, jms,jme, kms,kme &
34	,its,ite, jts,jte, kts,kte &
35	,cosz_urb2d,omg_urb2d ) !Optional urban
36	!------------------------------------------------------------------
37	IMPLICIT NONE
38	!------------------------------------------------------------------
39	INTEGER, PARAMETER :: np = 75
40
41	INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, &
42	ims,ime, jms,jme, kms,kme, &
43	its,ite, jts,jte, kts,kte
44	LOGICAL, INTENT(IN ) :: warm_rain
45
46	INTEGER, INTENT(IN ) :: JULDAY
47
48
49	REAL, INTENT(IN ) :: RADFRQ,DEGRAD, &
50	XTIME,DECLIN,SOLCON
51	!
52	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), &
53	INTENT(IN ) :: P3D, &
54	P8W3D, &
55	pi3D, &
56	T3D, &
57	dz8w, &
58	rho_phy, &
59	CLDFRA3D
60
61
62	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), &
63	INTENT(INOUT) :: RTHRATEN
64	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), &
65	INTENT(INOUT) :: taucldi, &
66	taucldc
67	!
68	REAL, DIMENSION( ims:ime, jms:jme ), &
69	INTENT(IN ) :: XLAT, &
70	XLONG, &
71	ALB
72	!
73	REAL, DIMENSION( ims:ime, jms:jme ), &
74	INTENT(INOUT) :: GSW
75	!
76	REAL, INTENT(IN ) :: GMT,CP,G
77	!
78
79	!
80	! Optional
81	!
82	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), OPTIONAL , &
83	INTENT(IN ) :: tauaer300,tauaer400,tauaer600,tauaer999, & ! jcb
84	gaer300,gaer400,gaer600,gaer999, & ! jcb
85	waer300,waer400,waer600,waer999 ! jcb
86
87	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), &
88	OPTIONAL, &
89	INTENT(IN ) :: &
90	QV3D, &
91	QC3D, &
92	QR3D, &
93	QI3D, &
94	QS3D, &
95	QG3D
96
97	LOGICAL, OPTIONAL, INTENT(IN ) :: F_QV,F_QC,F_QR,F_QI,F_QS,F_QG
98
99	! LOCAL VARS
100
101	REAL, DIMENSION( its:ite ) :: &
102	ts, &
103	cosz, &
104	rsuvbm, &
105	rsuvdf, &
106	rsirbm, &
107	rsirdf, &
108	p400, &
109	p700
110
111	INTEGER, DIMENSION( its:ite ) :: &
112	ict, &
113	icb
114
115	REAL, DIMENSION( its:ite, kts-1:kte, 2 ) :: taucld
116
117	REAL, DIMENSION( its:ite, kts-1:kte+1 ) :: flx, &
118	flxd
119	!
120	REAL, DIMENSION( its:ite, kts-1:kte ) :: O3
121	!
122	REAL, DIMENSION( its:ite, kts-1:kte, 11 ) :: &
123	taual, &
124	ssaal, &
125	asyal
126
127	REAL, DIMENSION( its:ite, kts-1:kte, 2 ) :: &
128	reff, &
129	cwc
130	REAL, DIMENSION( its: ite, kts-1:kte+1 ) :: &
131	P8W2D
132	REAL, DIMENSION( its: ite, kts-1:kte ) :: &
133	TTEN2D, &
134	SH2D, &
135	P2D, &
136	T2D, &
137	fcld2D
138	real, DIMENSION( its:ite , kts:kte+1 ) :: phyd
139	real, DIMENSION( its:ite , kts:kte ) :: phydmid
140
141	REAL, DIMENSION( np, 5 ) :: pres, &
142	ozone
143	REAL, DIMENSION( np ) :: p
144
145	LOGICAL :: cldwater,overcast, predicate
146	!
147	INTEGER :: i,j,K,NK,ib,kk,mix,mkx
148
149	! iprof = 1 : mid-latitude summer profile
150	! = 2 : mid-latitude winter profile
151	! = 3 : sub-arctic summer profile
152	! = 4 : sub-arctic winter profile
153	! = 5 : tropical profile
154	!
155
156	INTEGER :: iprof, &
157	is_summer, &
158	ie_summer, &
159	lattmp
160
161
162	!
163	REAL :: XLAT0,XLONG0
164	REAL :: fac,latrmp
165	REAL :: xt24,tloctm,hrang,xxlat
166
167	!URBAN
168	REAL, OPTIONAL, DIMENSION( ims:ime, jms:jme ), INTENT(OUT) :: COSZ_URB2D !urban
169	REAL, OPTIONAL, DIMENSION( ims:ime, jms:jme ), INTENT(OUT) :: OMG_URB2D !urban
170
171	real, dimension(11) :: midbands ! jcb
172	data midbands/.2,.235,.27,.2875,.3025,.305,.3625,.55,1.92,1.745,6.135/ ! jcb
173	real :: ang,slope ! jcb
174	character(len=200) :: msg !wig
175	!
176	!--------------------------------------------------------------------------------
177	! data set 1
178	! mid-latitude summer (75 levels) : p(mb) o3(g/g)
179	! surface temp = 294.0
180	!
181	data (pres(i,1),i=1,np)/ &
182	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
183	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
184	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
185	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
186	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
187	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
188	31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, &
189	157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, &
190	299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, &
191	442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, &
192	585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, &
193	727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, &
194	870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, &
195	1013.0000/
196	!
197	data (ozone(i,1),i=1,np)/ &
198	0.1793E-06, 0.2228E-06, 0.2665E-06, 0.3104E-06, 0.3545E-06, &
199	0.3989E-06, 0.4435E-06, 0.4883E-06, 0.5333E-06, 0.5786E-06, &
200	0.6241E-06, 0.6698E-06, 0.7157E-06, 0.7622E-06, 0.8557E-06, &
201	0.1150E-05, 0.1462E-05, 0.1793E-05, 0.2143E-05, 0.2512E-05, &
202	0.2902E-05, 0.3313E-05, 0.4016E-05, 0.5193E-05, 0.6698E-05, &
203	0.8483E-05, 0.9378E-05, 0.9792E-05, 0.1002E-04, 0.1014E-04, &
204	0.9312E-05, 0.7834E-05, 0.6448E-05, 0.5159E-05, 0.3390E-05, &
205	0.1937E-05, 0.1205E-05, 0.8778E-06, 0.6935E-06, 0.5112E-06, &
206	0.3877E-06, 0.3262E-06, 0.2770E-06, 0.2266E-06, 0.2020E-06, &
207	0.1845E-06, 0.1679E-06, 0.1519E-06, 0.1415E-06, 0.1317E-06, &
208	0.1225E-06, 0.1137E-06, 0.1055E-06, 0.1001E-06, 0.9487E-07, &
209	0.9016E-07, 0.8641E-07, 0.8276E-07, 0.7930E-07, 0.7635E-07, &
210	0.7347E-07, 0.7065E-07, 0.6821E-07, 0.6593E-07, 0.6368E-07, &
211	0.6148E-07, 0.5998E-07, 0.5859E-07, 0.5720E-07, 0.5582E-07, &
212	0.5457E-07, 0.5339E-07, 0.5224E-07, 0.5110E-07, 0.4999E-07/
213
214	!--------------------------------------------------------------------------------
215	! data set 2
216	! mid-latitude winter (75 levels) : p(mb) o3(g/g)
217	! surface temp = 272.2
218	!
219	data (pres(i,2),i=1,np)/ &
220	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
221	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
222	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
223	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
224	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
225	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
226	31.5105, 44.2001, 62.0000, 85.9000, 109.8000, 133.7000, &
227	157.6000, 181.5000, 205.4000, 229.3000, 253.2000, 277.1000, &
228	301.0000, 324.9000, 348.8000, 372.7000, 396.6000, 420.5000, &
229	444.4000, 468.3000, 492.2000, 516.1000, 540.0000, 563.9000, &
230	587.8000, 611.7000, 635.6000, 659.5000, 683.4000, 707.3000, &
231	731.2000, 755.1000, 779.0000, 802.9000, 826.8000, 850.7000, &
232	874.6000, 898.5000, 922.4000, 946.3000, 970.2000, 994.1000, &
233	1018.0000/
234	!
235	data (ozone(i,2),i=1,np)/ &
236	0.2353E-06, 0.3054E-06, 0.3771E-06, 0.4498E-06, 0.5236E-06, &
237	0.5984E-06, 0.6742E-06, 0.7511E-06, 0.8290E-06, 0.9080E-06, &
238	0.9881E-06, 0.1069E-05, 0.1152E-05, 0.1319E-05, 0.1725E-05, &
239	0.2145E-05, 0.2581E-05, 0.3031E-05, 0.3497E-05, 0.3980E-05, &
240	0.4478E-05, 0.5300E-05, 0.6725E-05, 0.8415E-05, 0.1035E-04, &
241	0.1141E-04, 0.1155E-04, 0.1143E-04, 0.1093E-04, 0.1060E-04, &
242	0.9720E-05, 0.8849E-05, 0.7424E-05, 0.6023E-05, 0.4310E-05, &
243	0.2820E-05, 0.1990E-05, 0.1518E-05, 0.1206E-05, 0.9370E-06, &
244	0.7177E-06, 0.5450E-06, 0.4131E-06, 0.3277E-06, 0.2563E-06, &
245	0.2120E-06, 0.1711E-06, 0.1524E-06, 0.1344E-06, 0.1199E-06, &
246	0.1066E-06, 0.9516E-07, 0.8858E-07, 0.8219E-07, 0.7598E-07, &
247	0.6992E-07, 0.6403E-07, 0.5887E-07, 0.5712E-07, 0.5540E-07, &
248	0.5370E-07, 0.5214E-07, 0.5069E-07, 0.4926E-07, 0.4785E-07, &
249	0.4713E-07, 0.4694E-07, 0.4676E-07, 0.4658E-07, 0.4641E-07, &
250	0.4634E-07, 0.4627E-07, 0.4619E-07, 0.4612E-07, 0.4605E-07/
251
252
253	!--------------------------------------------------------------------------------
254	! data set 3
255	! sub-arctic summer (75 levels) : p(mb) o3(g/g)
256	! surface temp = 287.0
257	!
258	data (pres(i,3),i=1,np)/ &
259	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
260	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
261	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
262	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
263	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
264	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
265	31.5105, 44.2001, 62.0000, 85.7000, 109.4000, 133.1000, &
266	156.8000, 180.5000, 204.2000, 227.9000, 251.6000, 275.3000, &
267	299.0000, 322.7000, 346.4000, 370.1000, 393.8000, 417.5000, &
268	441.2000, 464.9000, 488.6000, 512.3000, 536.0000, 559.7000, &
269	583.4000, 607.1000, 630.8000, 654.5000, 678.2000, 701.9000, &
270	725.6000, 749.3000, 773.0000, 796.7000, 820.4000, 844.1000, &
271	867.8000, 891.5000, 915.2000, 938.9000, 962.6000, 986.3000, &
272	1010.0000/
273	!
274	data (ozone(i,3),i=1,np)/ &
275	0.1728E-06, 0.2131E-06, 0.2537E-06, 0.2944E-06, 0.3353E-06, &
276	0.3764E-06, 0.4176E-06, 0.4590E-06, 0.5006E-06, 0.5423E-06, &
277	0.5842E-06, 0.6263E-06, 0.6685E-06, 0.7112E-06, 0.7631E-06, &
278	0.1040E-05, 0.1340E-05, 0.1660E-05, 0.2001E-05, 0.2362E-05, &
279	0.2746E-05, 0.3153E-05, 0.3762E-05, 0.4988E-05, 0.6518E-05, &
280	0.8352E-05, 0.9328E-05, 0.9731E-05, 0.8985E-05, 0.7632E-05, &
281	0.6814E-05, 0.6384E-05, 0.5718E-05, 0.4728E-05, 0.4136E-05, &
282	0.3033E-05, 0.2000E-05, 0.1486E-05, 0.1121E-05, 0.8680E-06, &
283	0.6474E-06, 0.5164E-06, 0.3921E-06, 0.2996E-06, 0.2562E-06, &
284	0.2139E-06, 0.1723E-06, 0.1460E-06, 0.1360E-06, 0.1267E-06, &
285	0.1189E-06, 0.1114E-06, 0.1040E-06, 0.9678E-07, 0.8969E-07, &
286	0.8468E-07, 0.8025E-07, 0.7590E-07, 0.7250E-07, 0.6969E-07, &
287	0.6694E-07, 0.6429E-07, 0.6208E-07, 0.5991E-07, 0.5778E-07, &
288	0.5575E-07, 0.5403E-07, 0.5233E-07, 0.5067E-07, 0.4904E-07, &
289	0.4721E-07, 0.4535E-07, 0.4353E-07, 0.4173E-07, 0.3997E-07/
290
291
292	!--------------------------------------------------------------------------------
293	! data set 3
294	! sub-arctic winter (75 levels) : p(mb) o3(g/g)
295	! surface temp = 257.1
296	!
297	data (pres(i,4),i=1,np)/ &
298	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
299	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
300	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
301	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
302	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
303	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
304	31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, &
305	157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, &
306	299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, &
307	442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, &
308	585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, &
309	727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, &
310	870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, &
311	1013.0000/
312	!
313	data (ozone(i,4),i=1,np)/ &
314	0.2683E-06, 0.3562E-06, 0.4464E-06, 0.5387E-06, 0.6333E-06, &
315	0.7301E-06, 0.8291E-06, 0.9306E-06, 0.1034E-05, 0.1140E-05, &
316	0.1249E-05, 0.1360E-05, 0.1474E-05, 0.1855E-05, 0.2357E-05, &
317	0.2866E-05, 0.3383E-05, 0.3906E-05, 0.4437E-05, 0.4975E-05, &
318	0.5513E-05, 0.6815E-05, 0.8157E-05, 0.1008E-04, 0.1200E-04, &
319	0.1242E-04, 0.1250E-04, 0.1157E-04, 0.1010E-04, 0.9063E-05, &
320	0.8836E-05, 0.8632E-05, 0.8391E-05, 0.7224E-05, 0.6054E-05, &
321	0.4503E-05, 0.3204E-05, 0.2278E-05, 0.1833E-05, 0.1433E-05, &
322	0.9996E-06, 0.7440E-06, 0.5471E-06, 0.3944E-06, 0.2852E-06, &
323	0.1977E-06, 0.1559E-06, 0.1333E-06, 0.1126E-06, 0.9441E-07, &
324	0.7678E-07, 0.7054E-07, 0.6684E-07, 0.6323E-07, 0.6028E-07, &
325	0.5746E-07, 0.5468E-07, 0.5227E-07, 0.5006E-07, 0.4789E-07, &
326	0.4576E-07, 0.4402E-07, 0.4230E-07, 0.4062E-07, 0.3897E-07, &
327	0.3793E-07, 0.3697E-07, 0.3602E-07, 0.3506E-07, 0.3413E-07, &
328	0.3326E-07, 0.3239E-07, 0.3153E-07, 0.3069E-07, 0.2987E-07/
329
330	!--------------------------------------------------------------------------------
331	! data set 4
332	! tropical (75 levels) : p(mb) o3(g/g)
333	! surface temp = 300.0
334	!
335	data (pres(i,5),i=1,np)/ &
336	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
337	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
338	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
339	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
340	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
341	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
342	31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, &
343	157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, &
344	299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, &
345	442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, &
346	585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, &
347	727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, &
348	870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, &
349	1013.0000/
350	!
351	data (ozone(i,5),i=1,np)/ &
352	0.1993E-06, 0.2521E-06, 0.3051E-06, 0.3585E-06, 0.4121E-06, &
353	0.4661E-06, 0.5203E-06, 0.5748E-06, 0.6296E-06, 0.6847E-06, &
354	0.7402E-06, 0.7959E-06, 0.8519E-06, 0.9096E-06, 0.1125E-05, &
355	0.1450E-05, 0.1794E-05, 0.2156E-05, 0.2538E-05, 0.2939E-05, &
356	0.3362E-05, 0.3785E-05, 0.4753E-05, 0.6005E-05, 0.7804E-05, &
357	0.9635E-05, 0.1023E-04, 0.1067E-04, 0.1177E-04, 0.1290E-04, &
358	0.1134E-04, 0.9223E-05, 0.6667E-05, 0.3644E-05, 0.1545E-05, &
359	0.5355E-06, 0.2523E-06, 0.2062E-06, 0.1734E-06, 0.1548E-06, &
360	0.1360E-06, 0.1204E-06, 0.1074E-06, 0.9707E-07, 0.8960E-07, &
361	0.8419E-07, 0.7962E-07, 0.7542E-07, 0.7290E-07, 0.7109E-07, &
362	0.6940E-07, 0.6786E-07, 0.6635E-07, 0.6500E-07, 0.6370E-07, &
363	0.6244E-07, 0.6132E-07, 0.6022E-07, 0.5914E-07, 0.5884E-07, &
364	0.5855E-07, 0.5823E-07, 0.5772E-07, 0.5703E-07, 0.5635E-07, &
365	0.5570E-07, 0.5492E-07, 0.5412E-07, 0.5335E-07, 0.5260E-07, &
366	0.5167E-07, 0.5063E-07, 0.4961E-07, 0.4860E-07, 0.4761E-07/
367
368	!--------------------------------------------------------------------------------
369
370	#ifdef AER_RA_FEEDBACK
371	IF ( .NOT. &
372	( PRESENT(tauaer300) .AND. &
373	PRESENT(tauaer400) .AND. &
374	PRESENT(tauaer600) .AND. &
375	PRESENT(tauaer999) .AND. &
376	PRESENT(gaer300) .AND. &
377	PRESENT(gaer400) .AND. &
378	PRESENT(gaer600) .AND. &
379	PRESENT(gaer999) .AND. &
380	PRESENT(waer300) .AND. &
381	PRESENT(waer400) .AND. &
382	PRESENT(waer600) .AND. &
383	PRESENT(waer999) ) ) THEN
384	CALL wrf_error_fatal ( 'Warning: missing fields required for aerosol radiation' )
385	ENDIF
386	#endif
387	cldwater = .true.
388	overcast = .false.
389
390	mix=ite-its+1
391	mkx=kte-kts+1
392
393	is_summer=80
394	ie_summer=265
395
396	! testing, need to change iprof, which is function of lat and julian day
397	! iprof = 1 : mid-latitude summer profile
398	! = 2 : mid-latitude winter profile
399	! = 3 : sub-arctic summer profile
400	! = 4 : sub-arctic winter profile
401	! = 5 : tropical profile
402
403	IF (abs(center_lat) .le. 30. ) THEN ! tropic
404	iprof = 5
405	ELSE
406	IF (center_lat .gt. 0.) THEN
407	IF (center_lat .gt. 60. ) THEN ! arctic
408	IF (JULDAY .gt. is_summer .and. JULDAY .lt. ie_summer ) THEN
409	! arctic summer
410	iprof = 3
411	ELSE
412	! arctic winter
413	iprof = 4
414	ENDIF
415	ELSE ! midlatitude
416	IF (JULDAY .gt. is_summer .and. JULDAY .lt. ie_summer ) THEN
417	! north midlatitude summer
418	iprof = 1
419	ELSE
420	! north midlatitude winter
421	iprof = 2
422	ENDIF
423	ENDIF
424
425	ELSE
426	IF (center_lat .lt. -60. ) THEN ! antarctic
427	IF (JULDAY .lt. is_summer .or. JULDAY .gt. ie_summer ) THEN
428	! antarctic summer
429	iprof = 3
430	ELSE
431	! antarctic winter
432	iprof = 4
433	ENDIF
434	ELSE ! midlatitude
435	IF (JULDAY .lt. is_summer .or. JULDAY .gt. ie_summer ) THEN
436	! south midlatitude summer
437	iprof = 1
438	ELSE
439	! south midlatitude winter
440	iprof = 2
441	ENDIF
442	ENDIF
443
444	ENDIF
445	ENDIF
446
447
448	j_loop: DO J=jts,jte
449
450	DO K=kts,kte
451	DO I=its,ite
452	cwc(i,k,1) = 0.
453	cwc(i,k,2) = 0.
454	ENDDO
455	ENDDO
456
457	DO K=1,np
458	p(k)=pres(k,iprof)
459	ENDDO
460
461	do k = kts,kte+1
462	do i = its,ite
463	if(k.eq.kts)then
464	phyd(i,k)=p8w3d(i,kts,j)
465	else
466	phyd(i,k)=phyd(i,k-1) - grho_phy(i,k-1,j)dz8w(i,k-1,j)
467	phydmid(i,k-1)=0.5*(phyd(i,k-1)+phyd(i,k))
468	endif
469	enddo
470	enddo
471
472	! reverse vars
473	!
474	DO K=kts,kte+1
475	DO I=its,ite
476	NK=kme-K+kms
477	P8W2D(I,K)=phyd(I,NK)*0.01 ! P8w2D is in mb
478	ENDDO
479	ENDDO
480
481	DO I=its,ite
482	P8W2D(I,0)=.0
483	ENDDO
484	!
485	DO K=kts,kte
486	DO I=its,ite
487	NK=kme-1-K+kms
488	TTEN2D(I,K)=0.
489	T2D(I,K)=T3D(I,NK,J)
490
491	! SH2D specific humidity
492	SH2D(I,K)=QV3D(I,NK,J)/(1.+QV3D(I,NK,J))
493	SH2D(I,K)=max(0.,SH2D(I,K))
494	cwc(I,K,2)=QC3D(I,NK,J)
495	cwc(I,K,2)=max(0.,cwc(I,K,2))
496
497	P2D(I,K)=phydmid(I,NK)*0.01 ! P2D is in mb
498	fcld2D(I,K)=CLDFRA3D(I,NK,J)
499	ENDDO
500	ENDDO
501
502	! This logic is tortured because cannot test F_QI unless
503	! it is present, and order of evaluation of expressions
504	! is not specified in Fortran
505
506	IF ( PRESENT ( F_QI ) ) THEN
507	predicate = F_QI
508	ELSE
509	predicate = .FALSE.
510	ENDIF
511
512	IF (.NOT. warm_rain .AND. .NOT. predicate ) THEN
513	DO K=kts,kte
514	DO I=its,ite
515	IF (T2D(I,K) .lt. 273.15) THEN
516	cwc(I,K,1)=cwc(I,K,2)
517	cwc(I,K,2)=0.
518	ENDIF
519	ENDDO
520	ENDDO
521	ENDIF
522
523	DO I=its,ite
524	TTEN2D(I,0)=0.
525	T2D(I,0)=T2D(I,1)
526	! SH2D specific humidity
527	SH2D(I,0)=0.5*SH2D(i,1)
528	cwc(I,0,2)=0.
529	cwc(I,0,1)=0.
530	P2D(I,0)=0.5*(P8W2D(I,0)+P8W2D(I,1))
531	fcld2D(I,0)=0.
532	ENDDO
533	!
534	IF ( PRESENT( F_QI ) .AND. PRESENT( qi3d) ) THEN
535	IF ( (F_QI) ) THEN
536	DO K=kts,kte
537	DO I=its,ite
538	NK=kme-1-K+kms
539	cwc(I,K,1)=QI3D(I,NK,J)
540	cwc(I,K,1)=max(0.,cwc(I,K,1))
541	ENDDO
542	ENDDO
543	ENDIF
544	ENDIF
545	!
546	! ... Vertical profiles for ozone
547	!
548	call o3prof (np, p, ozone(1,iprof), its, ite, kts-1, kte, P2D, O3)
549
550	! ... Vertical profiles for effective particle size
551	!
552	do k = kts-1, kte
553	do i = its, ite
554	reff(i,k,2) = 10.
555	reff(i,k,1) = 80.
556	end do
557	end do
558	!
559	! ... Level indices separating high, middle and low clouds
560	!
561	do i = its, ite
562	p400(i) = 1.e5
563	p700(i) = 1.e5
564	enddo
565
566	do k = kts-1,kte+1
567	do i = its, ite
568	if (abs(P8W2D(i,k) - 400.) .lt. p400(i)) then
569	p400(i) = abs(P8W2D(i,k) - 400.)
570	ict(i) = k
571	endif
572	if (abs(P8W2D(i,k) - 700.) .lt. p700(i)) then
573	p700(i) = abs(P8W2D(i,k) - 700.)
574	icb(i) = k
575	endif
576	end do
577	end do
578
579	!wig beg
580	! ... Aerosol effects. Added aerosol feedbacks with MOSAIC, Dec. 2005.
581	!
582	do ib = 1, 11
583	do k = kts-1,kte
584	do i = its,ite
585	taual(i,k,ib) = 0.
586	ssaal(i,k,ib) = 0.
587	asyal(i,k,ib) = 0.
588	end do
589	end do
590	end do
591
592	#ifdef AER_RA_FEEDBACK
593	!wig end
594	do ib = 1, 11
595	do k = kts-1,kte-1 !wig
596	do i = its,ite
597
598	! taual(i,kte-k,ib) = 0.
599	! ssaal(i,kte-k,ib) = 0.
600	! asyal(i,kte-k,ib) = 0.
601
602	!jcb beg
603	! convert optical properties at 300,400,600, and 999 to conform to the band wavelengths
604	! these are: 200,235,270,287.5,302.5,305,362.5,550,1920,1745,6135; why the emphasis on the UV?
605	! taual - use angstrom exponent
606	if(tauaer300(i,k+1,j).gt.thresh .and. tauaer999(i,k+1,j).gt.thresh) then
607	ang=log(tauaer300(i,k+1,j)/tauaer999(i,k+1,j))/log(999./300.)
608	! write(6,*)i,k,ang,tauaer300(i,k+1,j),tauaer999(i,k+1,j)
609	taual(i,kte-k,ib)=tauaer400(i,k+1,j)(0.4/midbands(ib))*ang ! notice reserved variable
610	! write(6,10001)i,k,ang,tauaer300(i,k+1,j),tauaer999(i,k+1,j),midbands(ib),taual(i,k,ib)
611	!10001 format(i3,i3,5f12.6)
612
613	! ssa - linear interpolation; extrapolation
614	slope=(waer600(i,k+1,j)-waer400(i,k+1,j))/.2
615	ssaal(i,kte-k,ib) = slope*(midbands(ib)-.6)+waer600(i,k+1,j) ! notice reversed variables
616	if(ssaal(i,kte-k,ib).lt.0.4) ssaal(i,kte-k,ib)=0.4
617	if(ssaal(i,kte-k,ib).ge.0.9) ssaal(i,kte-k,ib)=0.9
618
619	! g - linear interpolation;extrapolation
620	slope=(gaer600(i,k+1,j)-gaer400(i,k+1,j))/.2
621	asyal(i,kte-k,ib) = slope*(midbands(ib)-.6)+gaer600(i,k+1,j) ! notice reversed varaibles
622	if(asyal(i,kte-k,ib).lt.0.5) asyal(i,kte-k,ib)=0.5
623	if(asyal(i,kte-k,ib).ge.1.0) asyal(i,kte-k,ib)=1.0
624	endif
625	!jcb end
626	end do
627	end do
628	end do
629
630	!wig beg
631	do ib = 1, 11
632	do i = its,ite
633	slope = 0. !use slope as a sum holder
634	do k = kts-1,kte
635	slope = slope + taual(i,k,ib)
636	end do
637	if( slope < 0. ) then
638	write(msg,'("ERROR: Negative total optical depth of ",f8.2," at point i,j,ib=",3i5)') slope,i,j,ib
639	call wrf_error_fatal(msg)
640	else if( slope > 5. ) then
641	call wrf_message("-------------------------")
642	write(msg,'("WARNING: Large total optical depth of ",f8.2," at point i,j,ib=",3i5)') slope,i,j,ib
643	call wrf_message(msg)
644
645	call wrf_message("Diagnostics 1: k, tauaer300, tauaer400, tauaer600, tauaer999")
646	do k=kts,kte
647	write(msg,'(i4,4f8.2)') k, tauaer300(i,k,j), tauaer400(i,k,j), &
648	tauaer600(i,k,j), tauaer999(i,k,j)
649	call wrf_message(msg)
650	end do
651
652	call wrf_message("Diagnostics 2: k, gaer300, gaer400, gaer600, gaer999")
653	do k=kts,kte
654	write(msg,'(i4,4f8.2)') k, gaer300(i,k,j), gaer400(i,k,j), &
655	gaer600(i,k,j), gaer999(i,k,j)
656	call wrf_message(msg)
657	end do
658
659	call wrf_message("Diagnostics 3: k, waer300, waer400, waer600, waer999")
660	do k=kts,kte
661	write(msg,'(i4,4f8.2)') k, waer300(i,k,j), waer400(i,k,j), &
662	waer600(i,k,j), waer999(i,k,j)
663	call wrf_message(msg)
664	end do
665
666	call wrf_message("Diagnostics 4: k, ssaal, asyal, taual")
667	do k=kts-1,kte
668	write(msg,'(i4,3f8.2)') k, ssaal(i,k,ib), asyal(i,k,ib), taual(i,k,ib)
669	call wrf_message(msg)
670	end do
671	call wrf_message("-------------------------")
672	end if
673	end do
674	end do
675	!wig end
676	#endif
677	!
678	! ... Initialize output arrays
679	!
680	do ib = 1, 2
681	do k = kts-1, kte
682	do i = its, ite
683	taucld(i,k,ib) = 0.
684	end do
685	end do
686	end do
687	!
688	do k = kts-1,kte+1
689	do i = its,ite
690	flx(i,k) = 0.
691	flxd(i,k) = 0.
692	end do
693	end do
694	!
695	! ... Solar zenith angle
696	!
697	do i = its,ite
698	xt24 = mod(xtime + radfrq * 0.5, 1440.)
699	tloctm = GMT + xt24 / 60. + XLONG(i,j) / 15.
700	hrang = 15. * (tloctm - 12.) * degrad
701	xxlat = XLAT(i,j) * degrad
702	cosz(i) = sin(xxlat) * sin(declin) + &
703	cos(xxlat) * cos(declin) * cos(hrang)
704	!urban
705	if(present(COSZ_URB2D)) COSZ_URB2D(i,j)=cosz(i) !urban
706	if(present(OMG_URB2D)) OMG_URB2D(i,j)=hrang !urban
707	rsuvbm(i) = ALB(i,j)
708	rsuvdf(i) = ALB(i,j)
709	rsirbm(i) = ALB(i,j)
710	rsirdf(i) = ALB(i,j)
711	end do
712
713	call sorad (mix,1,1,mkx+1,p8w2D,t2D,sh2D,o3, &
714	overcast,cldwater,cwc,taucld,reff,fcld2D,ict,icb,&
715	taual,ssaal,asyal, &
716	cosz,rsuvbm,rsuvdf,rsirbm,rsirdf, &
717	flx,flxd)
718	!
719	! ... Convert the units of flx and flc from fraction to w/m^2
720	!
721	do k = kts, kte
722	do i = its, ite
723	nk=kme-1-k+kms
724	taucldc(i,nk,j)=taucld(i,k,2)
725	taucldi(i,nk,j)=taucld(i,k,1)
726	enddo
727	enddo
728
729	do k = kts, kte+1
730	do i = its, ite
731	if (cosz(i) .lt. thresh) then
732	flx(i,k) = 0.
733	else
734	flx(i,k) = flx(i,k) * SOLCON * cosz(i)
735	endif
736	end do
737	end do
738	!
739	! ... Calculate heating rate (deg/sec)
740	!
741	fac = .01 * g / Cp
742	do k = kts, kte
743	do i = its, ite
744	if (cosz(i) .gt. thresh) then
745	TTEN2D(i,k) = - fac * (flx(i,k) - flx(i,k+1))/ &
746	(p8w2d(i,k)-p8w2d(i,k+1))
747	endif
748	end do
749	end do
750
751	!
752	! ... Absorbed part in surface energy budget
753	!
754	do i = its, ite
755	if (cosz(i) .le. thresh) then
756	GSW(i,j) = 0.
757	else
758	GSW(i,j) = (1. - rsuvbm(i)) * flxd(i,kte+1) * SOLCON * cosz(i)
759	endif
760	end do
761
762	DO K=kts,kte
763	NK=kme-1-K+kms
764	DO I=its,ite
765	RTHRATEN(I,K,J)=RTHRATEN(I,K,J)+TTEN2D(I,NK)/pi3D(I,K,J)
766	ENDDO
767	ENDDO
768	!
769	ENDDO j_loop
770
771	END SUBROUTINE GSFCSWRAD
772
773	!******************* Version Solar-6 (May 8, 1997) ***************
774
775	subroutine sorad (m,n,ndim,np,pl,ta,wa,oa, &
776	overcast,cldwater,cwc,taucld,reff,fcld,ict,icb, &
777	taual,ssaal,asyal, &
778	cosz,rsuvbm,rsuvdf,rsirbm,rsirdf, &
779	flx,flxd)
780
781	!************************************************************************
782	!
783	! Version Solar-6 (May 8, 1997)
784	!
785	! New feature of this version is:
786	! (1) An option is added for scaling the cloud optical thickness. If
787	! the fractional cloud cover, fcld, in an atmospheric model is alway
788	! either 1 or 0 (i.e. partly cloudy sky is not allowed), it does
789	! not require the scaling of cloud optical thickness, and the
790	! option "overcast" can be set to .true. Computation is faster
791	! with this option than with overcast=.false.
792	!
793	!**********************************************************************
794	!
795	! Version Solar-5 (April 1997)
796	!
797	! New features of this version are:
798	! (1) Cloud optical properties can be computed from cloud water/ice
799	! amount and the effective particle size.
800	! (2) Aerosol optical properties are functions of height and band.
801	! (3) A maximum-random cloud overlapping approximation is applied.
802	!
803	!*********************************************************************
804	!
805	! This routine computes solar fluxes due to the absoption by water
806	! vapor, ozone, co2, o2, clouds, and aerosols and due to the
807	! scattering by clouds, aerosols, and gases.
808	!
809	! The solar spectrum is divided into one UV+visible band and three IR
810	! bands separated by the wavelength 0.7 micron. The UV+visible band
811	! is further divided into eight sub-bands.
812	!
813	! This is a vectorized code. It computes fluxes simultaneously for
814	! (m x n) soundings, which is a subset of (m x ndim) soundings.
815	! In a global climate model, m and ndim correspond to the numbers of
816	! grid boxes in the zonal and meridional directions, respectively.
817	!
818	! Ice and liquid cloud particles are allowed to co-exist in a layer.
819	!
820	! There is an option of providing either cloud ice/water mixing ratio
821	! (cwc) or thickness (taucld). If the former is provided, set
822	! cldwater=.true., and taucld will be computed from cwc and reff as a
823	! function of spectra band. Otherwise, set cldwater=.false., and
824	! specify taucld, independent of spectral band.
825	!
826	! If no information is available for reff, a default value of
827	! 10 micron for liquid water and 75 micron for ice can be used.
828	! For a clear layer, reff can be set to any values except zero.
829	!
830	! The maximum-random assumption is applied for treating cloud
831	! overlapping.
832
833	! Clouds are grouped into high, middle, and low clouds separated by
834	! the level indices ict and icb. For detail, see subroutine cldscale.
835	!
836	! In a high spatial-resolution atmospheric model, fractional cloud cover
837	! might be computed to be either 0 or 1. In such a case, scaling of the
838	! cloud optical thickness is not necessary, and the computation can be
839	! made faster by setting overcast=.true. The option overcast=.false.
840	! can be applied to any values of the fractional cloud cover, but the
841	! computation is slower.
842	!
843	! Aerosol optical thickness, single-scattering albaedo, and asymmtry
844	! factor can be specified as functions of height and spectral band.
845	!
846	!----- Input parameters:
847	! units size
848	! number of soundings in zonal direction (m) n/d 1
849	! number of soundings in meridional direction (n) n/d 1
850	! maximum number of soundings in n/d 1
851	! meridional direction (ndim>=n)
852	! number of atmospheric layers (np) n/d 1
853	! level pressure (pl) mb mndim(np+1)
854	! layer temperature (ta) k mndimnp
855	! layer specific humidity (wa) gm/gm mndimnp
856	! layer ozone concentration (oa) gm/gm mndimnp
857	! co2 mixing ratio by volumn (co2) pppv 1
858	! option for scaling cloud optical thickness n/d 1
859	! overcast="true" if scaling is NOT required
860	! overcast="fasle" if scaling is required
861	! option for cloud optical thickness n/d 1
862	! cldwater="true" if cwc is provided
863	! cldwater="false" if taucld is provided
864	! cloud water mixing ratio (cwc) gm/gm mndimnp*2
865	! index 1 for ice particles
866	! index 2 for liquid drops
867	! cloud optical thickness (taucld) n/d mndimnp*2
868	! index 1 for ice particles
869	! index 2 for liquid drops
870	! effective cloud-particle size (reff) micrometer mndimnp*2
871	! index 1 for ice particles
872	! index 2 for liquid drops
873	! cloud amount (fcld) fraction mndimnp
874	! level index separating high and middle n/d 1
875	! clouds (ict)
876	! level index separating middle and low n/d 1
877	! clouds (icb)
878	! aerosol optical thickness (taual) n/d mndimnp*11
879	! aerosol single-scattering albedo (ssaal) n/d mndimnp*11
880	! aerosol asymmetry factor (asyal) n/d mndimnp*11
881	! in the uv region :
882	! index 1 for the 0.175-0.225 micron band
883	! index 2 for the 0.225-0.245; 0.260-0.280 micron band
884	! index 3 for the 0.245-0.260 micron band
885	! index 4 for the 0.280-0.295 micron band
886	! index 5 for the 0.295-0.310 micron band
887	! index 6 for the 0.310-0.320 micron band
888	! index 7 for the 0.325-0.400 micron band
889	! in the par region :
890	! index 8 for the 0.400-0.700 micron band
891	! in the infrared region :
892	! index 9 for the 0.700-1.220 micron band
893	! index 10 for the 1.220-2.270 micron band
894	! index 11 for the 2.270-10.00 micron band
895	! cosine of solar zenith angle (cosz) n/d m*ndim
896	! uv+visible sfc albedo for beam radiation
897	! for wavelengths<0.7 micron (rsuvbm) fraction m*ndim
898	! uv+visible sfc albedo for diffuse radiation
899	! for wavelengths<0.7 micron (rsuvdf) fraction m*ndim
900	! ir sfc albedo for beam radiation
901	! for wavelengths>0.7 micron (rsirbm) fraction m*ndim
902	! ir sfc albedo for diffuse radiation (rsirdf) fraction m*ndim
903	!
904	!----- Output parameters
905	!
906	! all-sky flux (downward minus upward) (flx) fraction mndim(np+1)
907	! clear-sky flux (downward minus upward) (flc) fraction mndim(np+1)
908	! all-sky direct downward uv (0.175-0.4 micron)
909	! flux at the surface (fdiruv) fraction m*ndim
910	! all-sky diffuse downward uv flux at
911	! the surface (fdifuv) fraction m*ndim
912	! all-sky direct downward par (0.4-0.7 micron)
913	! flux at the surface (fdirpar) fraction m*ndim
914	! all-sky diffuse downward par flux at
915	! the surface (fdifpar) fraction m*ndim
916	! all-sky direct downward ir (0.7-10 micron)
917	! flux at the surface (fdirir) fraction m*ndim
918	! all-sky diffuse downward ir flux at
919	! the surface (fdifir) fraction m*ndim
920	!
921	!----- Notes:
922	!
923	! (1) The unit of "flux" is fraction of the incoming solar radiation
924	! at the top of the atmosphere. Therefore, fluxes should
925	! be equal to "flux" multiplied by the extra-terrestrial solar
926	! flux and the cosine of solar zenith angle.
927	! (2) pl(i,j,1) is the pressure at the top of the model, and
928	! pl(i,j,np+1) is the surface pressure.
929	! (3) the pressure levels ict and icb correspond approximately
930	! to 400 and 700 mb.
931	! (4) if overcast='true', the clear-sky flux, flc, is not computed.
932	!
933	!**************************************************************************
934	implicit none
935	!**************************************************************************
936
937	!-----input parameters
938
939	integer m,n,ndim,np
940	integer ict(m,ndim),icb(m,ndim)
941	real pl(m,ndim,np+1),ta(m,ndim,np),wa(m,ndim,np),oa(m,ndim,np)
942	real cwc(m,ndim,np,2),taucld(m,ndim,np,2),reff(m,ndim,np,2), &
943	fcld(m,ndim,np)
944	real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11)
945	real cosz(m,ndim),rsuvbm(m,ndim),rsuvdf(m,ndim), &
946	rsirbm(m,ndim),rsirdf(m,ndim)
947	logical overcast,cldwater
948
949	!-----output parameters
950
951	real flx(m,ndim,np+1),flc(m,ndim,np+1)
952	real flxu(m,ndim,np+1),flxd(m,ndim,np+1)
953	real fdiruv (m,ndim),fdifuv (m,ndim)
954	real fdirpar(m,ndim),fdifpar(m,ndim)
955	real fdirir (m,ndim),fdifir (m,ndim)
956
957	!-----temporary array
958
959	integer i,j,k
960	real cwp(m,n,np,2)
961	real dp(m,n,np),wh(m,n,np),oh(m,n,np),scal(m,n,np)
962	real swh(m,n,np+1),so2(m,n,np+1),df(m,n,np+1)
963	real sdf(m,n),sclr(m,n),csm(m,n),x
964
965	do j= 1, n
966	do i= 1, m
967	if (pl(i,j,1) .eq. 0.0) then
968	pl(i,j,1)=1.0e-4
969	endif
970	enddo
971	enddo
972
973	do j= 1, n
974	do i= 1, m
975
976	swh(i,j,1)=0.
977	so2(i,j,1)=0.
978
979	!-----csm is the effective secant of the solar zenith angle
980	! see equation (12) of Lacis and Hansen (1974, JAS)
981
982	csm(i,j)=35./sqrt(1224.cosz(i,j)cosz(i,j)+1.)
983
984	enddo
985	enddo
986
987	do k= 1, np
988	do j= 1, n
989	do i= 1, m
990
991	!-----compute layer thickness and pressure-scaling function.
992	! indices for the surface level and surface layer
993	! are np+1 and np, respectively.
994
995	dp(i,j,k)=pl(i,j,k+1)-pl(i,j,k)
996	scal(i,j,k)=dp(i,j,k)(.5(pl(i,j,k)+pl(i,j,k+1))/300.)**.8
997
998	!-----compute scaled water vapor amount, unit is g/cm**2
999	! note: the sign prior to the constant 0.00135 was incorrectly
1000	! set to negative in the previous version
1001
1002	wh(i,j,k)=1.02wa(i,j,k)scal(i,j,k)* &
1003	(1.+0.00135*(ta(i,j,k)-240.)) +1.e-11
1004	swh(i,j,k+1)=swh(i,j,k)+wh(i,j,k)
1005
1006	!-----compute ozone amount, unit is (cm-atm)stp
1007	! the number 466.7 is a conversion factor from g/cm**2 to (cm-atm)stp
1008
1009	oh(i,j,k)=1.02oa(i,j,k)dp(i,j,k)*466.7 +1.e-11
1010
1011	!-----compute layer cloud water amount (gm/m**2)
1012	! the index is 1 for ice crystals and 2 for liquid drops
1013
1014	cwp(i,j,k,1)=1.0210000.cwc(i,j,k,1)*dp(i,j,k)
1015	cwp(i,j,k,2)=1.0210000.cwc(i,j,k,2)*dp(i,j,k)
1016
1017	enddo
1018	enddo
1019	enddo
1020
1021	!-----initialize fluxes for all-sky (flx), clear-sky (flc), and
1022	! flux reduction (df)
1023
1024	do k=1, np+1
1025	do j=1, n
1026	do i=1, m
1027	flx(i,j,k)=0.
1028	flc(i,j,k)=0.
1029	flxu(i,j,k)=0.
1030	flxd(i,j,k)=0.
1031	df(i,j,k)=0.
1032	enddo
1033	enddo
1034	enddo
1035
1036	!-----compute solar uv and par fluxes
1037
1038	call soluv (m,n,ndim,np,oh,dp,overcast,cldwater, &
1039	cwp,taucld,reff,ict,icb,fcld,cosz, &
1040	taual,ssaal,asyal,csm,rsuvbm,rsuvdf, &
1041	flx,flc,flxu,flxd,fdiruv,fdifuv,fdirpar,fdifpar)
1042
1043	!-----compute and update solar ir fluxes
1044
1045	call solir (m,n,ndim,np,wh,overcast,cldwater, &
1046	cwp,taucld,reff,ict,icb,fcld,cosz, &
1047	taual,ssaal,asyal,csm,rsirbm,rsirdf, &
1048	flx,flc,flxu,flxd,fdirir,fdifir)
1049
1050	!-----compute scaled o2 amount, unit is (cm-atm)stp.
1051
1052	do k= 1, np
1053	do j= 1, n
1054	do i= 1, m
1055	so2(i,j,k+1)=so2(i,j,k)+165.22*scal(i,j,k)
1056	enddo
1057	enddo
1058	enddo
1059
1060	!-----compute flux reduction due to oxygen following
1061	! chou (J. climate, 1990). The fraction 0.0287 is the
1062	! extraterrestrial solar flux in the o2 bands.
1063
1064	do k= 2, np+1
1065	do j= 1, n
1066	do i= 1, m
1067	x=so2(i,j,k)*csm(i,j)
1068	df(i,j,k)=df(i,j,k)+0.0287(1.-exp(-0.00027sqrt(x)))
1069	enddo
1070	enddo
1071	enddo
1072
1073	!-----compute scaled co2 amounts. unit is (cm-atm)stp.
1074
1075	do k= 1, np
1076	do j= 1, n
1077	do i= 1, m
1078	so2(i,j,k+1)=so2(i,j,k)+co2789.scal(i,j,k)+1.e-11
1079	enddo
1080	enddo
1081	enddo
1082
1083	!-----compute and update flux reduction due to co2 following
1084	! chou (J. Climate, 1990)
1085
1086	call flxco2(m,n,np,so2,swh,csm,df)
1087
1088	!-----adjust for the effect of o2 cnd co2 on clear-sky fluxes.
1089
1090	do k= 2, np+1
1091	do j= 1, n
1092	do i= 1, m
1093	flc(i,j,k)=flc(i,j,k)-df(i,j,k)
1094	enddo
1095	enddo
1096	enddo
1097
1098	!-----adjust for the all-sky fluxes due to o2 and co2. It is
1099	! assumed that o2 and co2 have no effects on solar radiation
1100	! below clouds.
1101
1102	do j=1,n
1103	do i=1,m
1104	sdf(i,j)=0.0
1105	sclr(i,j)=1.0
1106	enddo
1107	enddo
1108
1109	do k=1,np
1110	do j=1,n
1111	do i=1,m
1112
1113	!-----sclr is the fraction of clear sky.
1114	! sdf is the flux reduction below clouds.
1115
1116	if(fcld(i,j,k).gt.0.01) then
1117	sdf(i,j)=sdf(i,j)+df(i,j,k)sclr(i,j)fcld(i,j,k)
1118	sclr(i,j)=sclr(i,j)*(1.-fcld(i,j,k))
1119	endif
1120	flx(i,j,k+1)=flx(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j)
1121	flxu(i,j,k+1)=flxu(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j)
1122	flxd(i,j,k+1)=flxd(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j)
1123
1124	enddo
1125	enddo
1126	enddo
1127
1128	!-----adjustment for the direct downward ir flux.
1129
1130	do j= 1, n
1131	do i= 1, m
1132	flc(i,j,np+1)=flc(i,j,np+1)+df(i,j,np+1)*rsirbm(i,j)
1133	flx(i,j,np+1)=flx(i,j,np+1)+(sdf(i,j)+ &
1134	df(i,j,np+1)sclr(i,j))rsirbm(i,j)
1135	flxu(i,j,np+1)=flxu(i,j,np+1)+(sdf(i,j)+ &
1136	df(i,j,np+1)sclr(i,j))rsirbm(i,j)
1137	flxd(i,j,np+1)=flxd(i,j,np+1)+(sdf(i,j)+ &
1138	df(i,j,np+1)sclr(i,j))rsirbm(i,j)
1139	fdirir(i,j)=fdirir(i,j)-(sdf(i,j)+df(i,j,np+1)*sclr(i,j))
1140	enddo
1141	enddo
1142
1143	end subroutine sorad
1144
1145	!************************************************************************
1146
1147	subroutine soluv (m,n,ndim,np,oh,dp,overcast,cldwater, &
1148	cwp,taucld,reff,ict,icb,fcld,cosz, &
1149	taual,ssaal,asyal,csm,rsuvbm,rsuvdf, &
1150	flx,flc,flxu,flxd,fdiruv,fdifuv,fdirpar,fdifpar)
1151
1152	!************************************************************************
1153	! compute solar fluxes in the uv+par region. the spectrum is
1154	! grouped into 8 bands:
1155	!
1156	! Band Micrometer
1157	!
1158	! UV-C 1. .175 - .225
1159	! 2. .225 - .245
1160	! .260 - .280
1161	! 3. .245 - .260
1162	!
1163	! UV-B 4. .280 - .295
1164	! 5. .295 - .310
1165	! 6. .310 - .320
1166	!
1167	! UV-A 7. .320 - .400
1168	!
1169	! PAR 8. .400 - .700
1170	!
1171	!----- Input parameters: units size
1172	!
1173	! number of soundings in zonal direction (m) n/d 1
1174	! number of soundings in meridional direction (n) n/d 1
1175	! maximum number of soundings in n/d 1
1176	! meridional direction (ndim)
1177	! number of atmospheric layers (np) n/d 1
1178	! layer ozone content (oh) (cm-atm)stp mnnp
1179	! layer pressure thickness (dp) mb mnnp
1180	! option for scaling cloud optical thickness n/d 1
1181	! overcast="true" if scaling is NOT required
1182	! overcast="fasle" if scaling is required
1183	! input option for cloud optical thickness n/d 1
1184	! cldwater="true" if taucld is provided
1185	! cldwater="false" if cwp is provided
1186	! cloud water amount (cwp) gm/m*2 mnnp2
1187	! index 1 for ice particles
1188	! index 2 for liquid drops
1189	! cloud optical thickness (taucld) n/d mndimnp*2
1190	! index 1 for ice paticles
1191	! index 2 for liquid particles
1192	! effective cloud-particle size (reff) micrometer mndimnp*2
1193	! index 1 for ice paticles
1194	! index 2 for liquid particles
1195	! level indiex separating high and n/d m*n
1196	! middle clouds (ict)
1197	! level indiex separating middle and n/d m*n
1198	! low clouds (icb)
1199	! cloud amount (fcld) fraction mndimnp
1200	! cosine of solar zenith angle (cosz) n/d m*ndim
1201	! aerosol optical thickness (taual) n/d mndimnp*11
1202	! aerosol single-scattering albedo (ssaal) n/d mndimnp*11
1203	! aerosol asymmetry factor (asyal) n/d mndimnp*11
1204	! cosecant of the solar zenith angle (csm) n/d m*n
1205	! uv+par surface albedo for beam fraction m*ndim
1206	! radiation (rsuvbm)
1207	! uv+par surface albedo for diffuse fraction m*ndim
1208	! radiation (rsuvdf)
1209	!
1210	!---- temporary array
1211	!
1212	! scaled cloud optical thickness n/d mnnp
1213	! for beam radiation (tauclb)
1214	! scaled cloud optical thickness n/d mnnp
1215	! for diffuse radiation (tauclf)
1216	!
1217	!----- output (updated) parameters:
1218	!
1219	! all-sky net downward flux (flx) fraction mndim(np+1)
1220	! clear-sky net downward flux (flc) fraction mndim(np+1)
1221	! all-sky direct downward uv flux at
1222	! the surface (fdiruv) fraction m*ndim
1223	! all-sky diffuse downward uv flux at
1224	! the surface (fdifuv) fraction m*ndim
1225	! all-sky direct downward par flux at
1226	! the surface (fdirpar) fraction m*ndim
1227	! all-sky diffuse downward par flux at
1228	! the surface (fdifpar) fraction m*ndim
1229	!
1230	!***********************************************************************
1231	implicit none
1232	!***********************************************************************
1233
1234	!-----input parameters
1235
1236	integer m,n,ndim,np
1237	integer ict(m,ndim),icb(m,ndim)
1238	real taucld(m,ndim,np,2),reff(m,ndim,np,2),fcld(m,ndim,np)
1239	real cc(m,n,3),cosz(m,ndim)
1240	real cwp(m,n,np,2),oh(m,n,np),dp(m,n,np)
1241	real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11)
1242	real rsuvbm(m,ndim),rsuvdf(m,ndim),csm(m,n)
1243	logical overcast,cldwater
1244
1245	!-----output (updated) parameter
1246
1247	real flx(m,ndim,np+1),flc(m,ndim,np+1)
1248	real flxu(m,ndim,np+1),flxd(m,ndim,np+1)
1249	real fdiruv (m,ndim),fdifuv (m,ndim)
1250	real fdirpar(m,ndim),fdifpar(m,ndim)
1251
1252	!-----static parameters
1253
1254	integer nband
1255	parameter (nband=8)
1256	real hk(nband),xk(nband),ry(nband)
1257	real aig(3),awg(3)
1258
1259	!-----temporary array
1260
1261	integer i,j,k,ib
1262	real tauclb(m,n,np),tauclf(m,n,np),asycl(m,n,np)
1263	real taurs,tauoz,tausto,ssatau,asysto,tauto,ssato,asyto
1264	real taux,reff1,reff2,g1,g2
1265	real td(m,n,np+1,2),rr(m,n,np+1,2),tt(m,n,np+1,2), &
1266	rs(m,n,np+1,2),ts(m,n,np+1,2)
1267	real fall(m,n,np+1),fclr(m,n,np+1),fsdir(m,n),fsdif(m,n)
1268	real fallu(m,n,np+1),falld(m,n,np+1)
1269	real asyclt(m,n)
1270	real rr1t(m,n),tt1t(m,n),td1t(m,n),rs1t(m,n),ts1t(m,n)
1271	real rr2t(m,n),tt2t(m,n),td2t(m,n),rs2t(m,n),ts2t(m,n)
1272
1273	!-----hk is the fractional extra-terrestrial solar flux in each
1274	! of the 8 bands. the sum of hk is 0.47074.
1275
1276	data hk/.00057, .00367, .00083, .00417, &
1277	.00600, .00556, .05913, .39081/
1278
1279	!-----xk is the ozone absorption coefficient. unit: /(cm-atm)stp
1280
1281	data xk /30.47, 187.2, 301.9, 42.83, &
1282	7.09, 1.25, 0.0345, 0.0539/
1283
1284	!-----ry is the extinction coefficient for Rayleigh scattering.
1285	! unit: /mb.
1286
1287	data ry /.00604, .00170, .00222, .00132, &
1288	.00107, .00091, .00055, .00012/
1289
1290	!-----coefficients for computing the asymmetry factor of ice clouds
1291	! from asycl=aig(,1)+aig(,2)reff+aig(,3)reff*2, independent
1292	! of spectral band.
1293
1294	data aig/.74625000,.00105410,-.00000264/
1295
1296	!-----coefficients for computing the asymmetry factor of liquid
1297	! clouds from asycl=awg(,1)+awg(,2)reff+awg(,3)reff*2,
1298	! independent of spectral band.
1299
1300	data awg/.82562000,.00529000,-.00014866/
1301
1302	!-----initialize fdiruv, fdifuv, surface reflectances and transmittances.
1303	! cc is the maximum cloud cover in each of the three cloud groups.
1304
1305	do j= 1, n
1306	do i= 1, m
1307	fdiruv(i,j)=0.0
1308	fdifuv(i,j)=0.0
1309	rr(i,j,np+1,1)=rsuvbm(i,j)
1310	rr(i,j,np+1,2)=rsuvbm(i,j)
1311	rs(i,j,np+1,1)=rsuvdf(i,j)
1312	rs(i,j,np+1,2)=rsuvdf(i,j)
1313	td(i,j,np+1,1)=0.0
1314	td(i,j,np+1,2)=0.0
1315	tt(i,j,np+1,1)=0.0
1316	tt(i,j,np+1,2)=0.0
1317	ts(i,j,np+1,1)=0.0
1318	ts(i,j,np+1,2)=0.0
1319	cc(i,j,1)=0.0
1320	cc(i,j,2)=0.0
1321	cc(i,j,3)=0.0
1322	enddo
1323	enddo
1324
1325
1326	!-----compute cloud optical thickness
1327
1328	if (cldwater) then
1329
1330	do k= 1, np
1331	do j= 1, n
1332	do i= 1, m
1333	taucld(i,j,k,1)=cwp(i,j,k,1)*( 3.33e-4+2.52/reff(i,j,k,1))
1334	taucld(i,j,k,2)=cwp(i,j,k,2)*(-6.59e-3+1.65/reff(i,j,k,2))
1335	enddo
1336	enddo
1337	enddo
1338
1339	endif
1340
1341	!-----options for scaling cloud optical thickness
1342
1343	if (overcast) then
1344
1345	do k= 1, np
1346	do j= 1, n
1347	do i= 1, m
1348	tauclb(i,j,k)=taucld(i,j,k,1)+taucld(i,j,k,2)
1349	tauclf(i,j,k)=tauclb(i,j,k)
1350	enddo
1351	enddo
1352	enddo
1353
1354	do k= 1, 3
1355	do j= 1, n
1356	do i= 1, m
1357	cc(i,j,k)=1.0
1358	enddo
1359	enddo
1360	enddo
1361
1362	else
1363
1364	!-----scale cloud optical thickness in each layer from taucld (with
1365	! cloud amount fcld) to tauclb and tauclf (with cloud amount cc).
1366	! tauclb is the scaled optical thickness for beam radiation and
1367	! tauclf is for diffuse radiation.
1368
1369	call cldscale(m,n,ndim,np,cosz,fcld,taucld,ict,icb, &
1370	cc,tauclb,tauclf)
1371
1372	endif
1373
1374	!-----compute cloud asymmetry factor for a mixture of
1375	! liquid and ice particles. unit of reff is micrometers.
1376
1377	do k= 1, np
1378
1379	do j= 1, n
1380	do i= 1, m
1381
1382	asyclt(i,j)=1.0
1383
1384	taux=taucld(i,j,k,1)+taucld(i,j,k,2)
1385	if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then
1386
1387	reff1=min(reff(i,j,k,1),130.)
1388	reff2=min(reff(i,j,k,2),20.0)
1389
1390	g1=(aig(1)+(aig(2)+aig(3)reff1)reff1)*taucld(i,j,k,1)
1391	g2=(awg(1)+(awg(2)+awg(3)reff2)reff2)*taucld(i,j,k,2)
1392	asyclt(i,j)=(g1+g2)/taux
1393
1394	endif
1395
1396	enddo
1397	enddo
1398
1399	do j=1,n
1400	do i=1,m
1401	asycl(i,j,k)=asyclt(i,j)
1402	enddo
1403	enddo
1404
1405	enddo
1406
1407	!-----integration over spectral bands
1408
1409	do 100 ib=1,nband
1410
1411	do 300 k= 1, np
1412
1413	do j= 1, n
1414	do i= 1, m
1415
1416	!-----compute ozone and rayleigh optical thicknesses
1417
1418	taurs=ry(ib)*dp(i,j,k)
1419	tauoz=xk(ib)*oh(i,j,k)
1420
1421	!-----compute clear-sky optical thickness, single scattering albedo,
1422	! and asymmetry factor
1423
1424	tausto=taurs+tauoz+taual(i,j,k,ib)+1.0e-8
1425	ssatau=ssaal(i,j,k,ib)*taual(i,j,k,ib)+taurs
1426	asysto=asyal(i,j,k,ib)ssaal(i,j,k,ib)taual(i,j,k,ib)
1427
1428	tauto=tausto
1429	ssato=ssatau/tauto+1.0e-8
1430	ssato=min(ssato,0.999999)
1431	asyto=asysto/(ssato*tauto)
1432
1433	!-----compute reflectance and transmittance for cloudless layers
1434
1435	!- for direct incident radiation
1436
1437	call deledd (tauto,ssato,asyto,csm(i,j), &
1438	rr1t(i,j),tt1t(i,j),td1t(i,j))
1439
1440	!- for diffuse incident radiation
1441
1442	call sagpol (tauto,ssato,asyto,rs1t(i,j),ts1t(i,j))
1443
1444	!-----compute reflectance and transmittance for cloud layers
1445
1446	if (tauclb(i,j,k).lt.0.01 .or. fcld(i,j,k).lt.0.01) then
1447
1448	rr2t(i,j)=rr1t(i,j)
1449	tt2t(i,j)=tt1t(i,j)
1450	td2t(i,j)=td1t(i,j)
1451	rs2t(i,j)=rs1t(i,j)
1452	ts2t(i,j)=ts1t(i,j)
1453
1454	else
1455
1456	!-- for direct incident radiation
1457
1458	tauto=tausto+tauclb(i,j,k)
1459	ssato=(ssatau+tauclb(i,j,k))/tauto+1.0e-8
1460	ssato=min(ssato,0.999999)
1461	asyto=(asysto+asycl(i,j,k)tauclb(i,j,k))/(ssatotauto)
1462
1463	call deledd (tauto,ssato,asyto,csm(i,j), &
1464	rr2t(i,j),tt2t(i,j),td2t(i,j))
1465
1466	!-- for diffuse incident radiation
1467
1468	tauto=tausto+tauclf(i,j,k)
1469	ssato=(ssatau+tauclf(i,j,k))/tauto+1.0e-8
1470	ssato=min(ssato,0.999999)
1471	asyto=(asysto+asycl(i,j,k)tauclf(i,j,k))/(ssatotauto)
1472
1473	call sagpol (tauto,ssato,asyto,rs2t(i,j),ts2t(i,j))
1474
1475	endif
1476
1477	enddo
1478	enddo
1479
1480	do j=1,n
1481	do i=1,m
1482	rr(i,j,k,1)=rr1t(i,j)
1483	enddo
1484	enddo
1485	do j=1,n
1486	do i=1,m
1487	tt(i,j,k,1)=tt1t(i,j)
1488	enddo
1489	enddo
1490	do j=1,n
1491	do i=1,m
1492	td(i,j,k,1)=td1t(i,j)
1493	enddo
1494	enddo
1495	do j=1,n
1496	do i=1,m
1497	rs(i,j,k,1)=rs1t(i,j)
1498	enddo
1499	enddo
1500	do j=1,n
1501	do i=1,m
1502	ts(i,j,k,1)=ts1t(i,j)
1503	enddo
1504	enddo
1505
1506	do j=1,n
1507	do i=1,m
1508	rr(i,j,k,2)=rr2t(i,j)
1509	enddo
1510	enddo
1511	do j=1,n
1512	do i=1,m
1513	tt(i,j,k,2)=tt2t(i,j)
1514	enddo
1515	enddo
1516	do j=1,n
1517	do i=1,m
1518	td(i,j,k,2)=td2t(i,j)
1519	enddo
1520	enddo
1521	do j=1,n
1522	do i=1,m
1523	rs(i,j,k,2)=rs2t(i,j)
1524	enddo
1525	enddo
1526	do j=1,n
1527	do i=1,m
1528	ts(i,j,k,2)=ts2t(i,j)
1529	enddo
1530	enddo
1531
1532	300 continue
1533
1534	!-----flux calculations
1535
1536	call cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts, &
1537	fclr,fall,fallu,falld,fsdir,fsdif)
1538
1539	do k= 1, np+1
1540	do j= 1, n
1541	do i= 1, m
1542	flx(i,j,k)=flx(i,j,k)+fall(i,j,k)*hk(ib)
1543	flxu(i,j,k)=flxu(i,j,k)+fallu(i,j,k)*hk(ib)
1544	flxd(i,j,k)=flxd(i,j,k)+falld(i,j,k)*hk(ib)
1545	enddo
1546	enddo
1547	do j= 1, n
1548	do i= 1, m
1549	flc(i,j,k)=flc(i,j,k)+fclr(i,j,k)*hk(ib)
1550	enddo
1551	enddo
1552	enddo
1553
1554	!-----compute downward surface fluxes in the UV and par regions
1555
1556	if(ib.lt.8) then
1557	do j=1,n
1558	do i=1,m
1559	fdiruv(i,j)=fdiruv(i,j)+fsdir(i,j)*hk(ib)
1560	fdifuv(i,j)=fdifuv(i,j)+fsdif(i,j)*hk(ib)
1561	enddo
1562	enddo
1563	else
1564	do j=1,n
1565	do i=1,m
1566	fdirpar(i,j)=fsdir(i,j)*hk(ib)
1567	fdifpar(i,j)=fsdif(i,j)*hk(ib)
1568	enddo
1569	enddo
1570	endif
1571
1572	100 continue
1573
1574	end subroutine soluv
1575
1576	!************************************************************************
1577
1578	subroutine solir (m,n,ndim,np,wh,overcast,cldwater, &
1579	cwp,taucld,reff,ict,icb,fcld,cosz, &
1580	taual,ssaal,asyal,csm,rsirbm,rsirdf, &
1581	flx,flc,flxu,flxd,fdirir,fdifir)
1582
1583	!************************************************************************
1584	! compute solar flux in the infrared region. The spectrum is divided
1585	! into three bands:
1586	!
1587	! band wavenumber(/cm) wavelength (micron)
1588	! 1( 9) 14300-8200 0.70-1.22
1589	! 2(10) 8200-4400 1.22-2.27
1590	! 3(11) 4400-1000 2.27-10.0
1591	!
1592	!----- Input parameters: units size
1593	!
1594	! number of soundings in zonal direction (m) n/d 1
1595	! number of soundings in meridional direction (n) n/d 1
1596	! maximum number of soundings in n/d 1
1597	! meridional direction (ndim)
1598	! number of atmospheric layers (np) n/d 1
1599	! layer scaled-water vapor content (wh) gm/cm^2 mnnp
1600	! option for scaling cloud optical thickness n/d 1
1601	! overcast="true" if scaling is NOT required
1602	! overcast="fasle" if scaling is required
1603	! input option for cloud optical thickness n/d 1
1604	! cldwater="true" if taucld is provided
1605	! cldwater="false" if cwp is provided
1606	! cloud water concentration (cwp) gm/m*2 mnnp2
1607	! index 1 for ice particles
1608	! index 2 for liquid drops
1609	! cloud optical thickness (taucld) n/d mndimnp*2
1610	! index 1 for ice paticles
1611	! effective cloud-particle size (reff) micrometer mndimnp*2
1612	! index 1 for ice paticles
1613	! index 2 for liquid particles
1614	! level index separating high and n/d m*n
1615	! middle clouds (ict)
1616	! level index separating middle and n/d m*n
1617	! low clouds (icb)
1618	! cloud amount (fcld) fraction mndimnp
1619	! aerosol optical thickness (taual) n/d mndimnp*11
1620	! aerosol single-scattering albedo (ssaal) n/d mndimnp*11
1621	! aerosol asymmetry factor (asyal) n/d mndimnp*11
1622	! cosecant of the solar zenith angle (csm) n/d m*n
1623	! near ir surface albedo for beam fraction m*ndim
1624	! radiation (rsirbm)
1625	! near ir surface albedo for diffuse fraction m*ndim
1626	! radiation (rsirdf)
1627	!
1628	!---- temporary array
1629	!
1630	! scaled cloud optical thickness n/d mnnp
1631	! for beam radiation (tauclb)
1632	! scaled cloud optical thickness n/d mnnp
1633	! for diffuse radiation (tauclf)
1634	!
1635	!----- output (updated) parameters:
1636	!
1637	! all-sky flux (downward-upward) (flx) fraction mndim(np+1)
1638	! clear-sky flux (downward-upward) (flc) fraction mndim(np+1)
1639	! all-sky direct downward ir flux at
1640	! the surface (fdirir) fraction m*ndim
1641	! all-sky diffuse downward ir flux at
1642	! the surface (fdifir) fraction m*ndim
1643	!
1644	!**********************************************************************
1645	implicit none
1646	!**********************************************************************
1647
1648	!-----input parameters
1649
1650	integer m,n,ndim,np
1651	integer ict(m,ndim),icb(m,ndim)
1652	real cwp(m,n,np,2),taucld(m,ndim,np,2),reff(m,ndim,np,2)
1653	real fcld(m,ndim,np),cc(m,n,3),cosz(m,ndim)
1654	real rsirbm(m,ndim),rsirdf(m,ndim)
1655	real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11)
1656	real wh(m,n,np),csm(m,n)
1657	logical overcast,cldwater
1658
1659	!-----output (updated) parameters
1660
1661	real flx(m,ndim,np+1),flc(m,ndim,np+1)
1662	real flxu(m,ndim,np+1),flxd(m,ndim,np+1)
1663	real fdirir(m,ndim),fdifir(m,ndim)
1664
1665	!-----static parameters
1666
1667	integer nk,nband
1668	parameter (nk=10,nband=3)
1669	real xk(nk),hk(nband,nk),aib(nband,2),awb(nband,2)
1670	real aia(nband,3),awa(nband,3),aig(nband,3),awg(nband,3)
1671
1672	!-----temporary array
1673
1674	integer ib,iv,ik,i,j,k
1675	real tauclb(m,n,np),tauclf(m,n,np)
1676	real ssacl(m,n,np),asycl(m,n,np)
1677	real rr(m,n,np+1,2),tt(m,n,np+1,2),td(m,n,np+1,2), &
1678	rs(m,n,np+1,2),ts(m,n,np+1,2)
1679	real fall(m,n,np+1),fclr(m,n,np+1)
1680	real fallu(m,n,np+1),falld(m,n,np+1)
1681	real fsdir(m,n),fsdif(m,n)
1682
1683	real tauwv,tausto,ssatau,asysto,tauto,ssato,asyto
1684	real taux,reff1,reff2,w1,w2,g1,g2
1685	real ssaclt(m,n),asyclt(m,n)
1686	real rr1t(m,n),tt1t(m,n),td1t(m,n),rs1t(m,n),ts1t(m,n)
1687	real rr2t(m,n),tt2t(m,n),td2t(m,n),rs2t(m,n),ts2t(m,n)
1688
1689	!-----water vapor absorption coefficient for 10 k-intervals.
1690	! unit: cm^2/gm
1691
1692	data xk/ &
1693	0.0010, 0.0133, 0.0422, 0.1334, 0.4217, &
1694	1.334, 5.623, 31.62, 177.8, 1000.0/
1695
1696	!-----water vapor k-distribution function,
1697	! the sum of hk is 0.52926. unit: fraction
1698
1699	data hk/ &
1700	.20673,.08236,.01074, .03497,.01157,.00360, &
1701	.03011,.01133,.00411, .02260,.01143,.00421, &
1702	.01336,.01240,.00389, .00696,.01258,.00326, &
1703	.00441,.01381,.00499, .00115,.00650,.00465, &
1704	.00026,.00244,.00245, .00000,.00094,.00145/
1705
1706	!-----coefficients for computing the extinction coefficient of
1707	! ice clouds from b=aib(,1)+aib(,2)/reff
1708
1709	data aib/ &
1710	.000333, .000333, .000333, &
1711	2.52, 2.52, 2.52/
1712
1713	!-----coefficients for computing the extinction coefficient of
1714	! water clouds from b=awb(,1)+awb(,2)/reff
1715
1716	data awb/ &
1717	-0.0101, -0.0166, -0.0339, &
1718	1.72, 1.85, 2.16/
1719
1720
1721	!-----coefficients for computing the single scattering albedo of
1722	! ice clouds from ssa=1-(aia(,1)+aia(,2)reff+aia(,3)reff*2)
1723
1724	data aia/ &
1725	-.00000260, .00215346, .08938331, &
1726	.00000746, .00073709, .00299387, &
1727	.00000000,-.00000134,-.00001038/
1728
1729	!-----coefficients for computing the single scattering albedo of
1730	! liquid clouds from ssa=1-(awa(,1)+awa(,2)reff+awa(,3)reff*2)
1731
1732	data awa/ &
1733	.00000007,-.00019934, .01209318, &
1734	.00000845, .00088757, .01784739, &
1735	-.00000004,-.00000650,-.00036910/
1736
1737	!-----coefficients for computing the asymmetry factor of ice clouds
1738	! from asycl=aig(,1)+aig(,2)reff+aig(,3)reff*2
1739
1740	data aig/ &
1741	.74935228, .76098937, .84090400, &
1742	.00119715, .00141864, .00126222, &
1743	-.00000367,-.00000396,-.00000385/
1744
1745	!-----coefficients for computing the asymmetry factor of liquid clouds
1746	! from asycl=awg(,1)+awg(,2)reff+awg(,3)reff*2
1747
1748	data awg/ &
1749	.79375035, .74513197, .83530748, &
1750	.00832441, .01370071, .00257181, &
1751	-.00023263,-.00038203, .00005519/
1752
1753	!-----initialize surface fluxes, reflectances, and transmittances.
1754	! cc is the maximum cloud cover in each of the three cloud groups.
1755
1756	do j= 1, n
1757	do i= 1, m
1758	fdirir(i,j)=0.0
1759	fdifir(i,j)=0.0
1760	rr(i,j,np+1,1)=rsirbm(i,j)
1761	rr(i,j,np+1,2)=rsirbm(i,j)
1762	rs(i,j,np+1,1)=rsirdf(i,j)
1763	rs(i,j,np+1,2)=rsirdf(i,j)
1764	td(i,j,np+1,1)=0.0
1765	td(i,j,np+1,2)=0.0
1766	tt(i,j,np+1,1)=0.0
1767	tt(i,j,np+1,2)=0.0
1768	ts(i,j,np+1,1)=0.0
1769	ts(i,j,np+1,2)=0.0
1770	cc(i,j,1)=0.0
1771	cc(i,j,2)=0.0
1772	cc(i,j,3)=0.0
1773	enddo
1774	enddo
1775
1776	!-----integration over spectral bands
1777
1778	do 100 ib=1,nband
1779
1780	iv=ib+8
1781
1782	!-----compute cloud optical thickness
1783
1784	if (cldwater) then
1785
1786	do k= 1, np
1787	do j= 1, n
1788	do i= 1, m
1789	taucld(i,j,k,1)=cwp(i,j,k,1)*(aib(ib,1) &
1790	+aib(ib,2)/reff(i,j,k,1))
1791	taucld(i,j,k,2)=cwp(i,j,k,2)*(awb(ib,1) &
1792	+awb(ib,2)/reff(i,j,k,2))
1793	enddo
1794	enddo
1795	enddo
1796
1797	endif
1798
1799	!-----options for scaling cloud optical thickness
1800
1801	if (overcast) then
1802
1803	do k= 1, np
1804	do j= 1, n
1805	do i= 1, m
1806	tauclb(i,j,k)=taucld(i,j,k,1)+taucld(i,j,k,2)
1807	tauclf(i,j,k)=tauclb(i,j,k)
1808	enddo
1809	enddo
1810	enddo
1811
1812	do k= 1, 3
1813	do j= 1, n
1814	do i= 1, m
1815	cc(i,j,k)=1.0
1816	enddo
1817	enddo
1818	enddo
1819
1820	else
1821
1822	!-----scale cloud optical thickness in each layer from taucld (with
1823	! cloud amount fcld) to tauclb and tauclf (with cloud amount cc).
1824	! tauclb is the scaled optical thickness for beam radiation and
1825	! tauclf is for diffuse radiation.
1826
1827	call cldscale(m,n,ndim,np,cosz,fcld,taucld,ict,icb, &
1828	cc,tauclb,tauclf)
1829
1830	endif
1831
1832	!-----compute cloud single scattering albedo and asymmetry factor
1833	! for a mixture of ice and liquid particles.
1834
1835	do k= 1, np
1836
1837	do j= 1, n
1838	do i= 1, m
1839
1840	ssaclt(i,j)=1.0
1841	asyclt(i,j)=1.0
1842
1843	taux=taucld(i,j,k,1)+taucld(i,j,k,2)
1844	if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then
1845
1846	reff1=min(reff(i,j,k,1),130.)
1847	reff2=min(reff(i,j,k,2),20.0)
1848
1849	w1=(1.-(aia(ib,1)+(aia(ib,2)+ &
1850	aia(ib,3)reff1)reff1))*taucld(i,j,k,1)
1851	w2=(1.-(awa(ib,1)+(awa(ib,2)+ &
1852	awa(ib,3)reff2)reff2))*taucld(i,j,k,2)
1853	ssaclt(i,j)=(w1+w2)/taux
1854
1855	g1=(aig(ib,1)+(aig(ib,2)+aig(ib,3)reff1)reff1)*w1
1856	g2=(awg(ib,1)+(awg(ib,2)+awg(ib,3)reff2)reff2)*w2
1857	asyclt(i,j)=(g1+g2)/(w1+w2)
1858
1859	endif
1860
1861	enddo
1862	enddo
1863
1864	do j=1,n
1865	do i=1,m
1866	ssacl(i,j,k)=ssaclt(i,j)
1867	enddo
1868	enddo
1869	do j=1,n
1870	do i=1,m
1871	asycl(i,j,k)=asyclt(i,j)
1872	enddo
1873	enddo
1874
1875	enddo
1876
1877	!-----integration over the k-distribution function
1878
1879	do 200 ik=1,nk
1880
1881	do 300 k= 1, np
1882
1883	do j= 1, n
1884	do i= 1, m
1885
1886	tauwv=xk(ik)*wh(i,j,k)
1887
1888	!-----compute clear-sky optical thickness, single scattering albedo,
1889	! and asymmetry factor.
1890
1891	tausto=tauwv+taual(i,j,k,iv)+1.0e-8
1892	ssatau=ssaal(i,j,k,iv)*taual(i,j,k,iv)
1893	asysto=asyal(i,j,k,iv)ssaal(i,j,k,iv)taual(i,j,k,iv)
1894
1895	!-----compute reflectance and transmittance for cloudless layers
1896
1897	tauto=tausto
1898	ssato=ssatau/tauto+1.0e-8
1899
1900	if (ssato .gt. 0.001) then
1901
1902	ssato=min(ssato,0.999999)
1903	asyto=asysto/(ssato*tauto)
1904
1905	!- for direct incident radiation
1906
1907	call deledd (tauto,ssato,asyto,csm(i,j), &
1908	rr1t(i,j),tt1t(i,j),td1t(i,j))
1909
1910	!- for diffuse incident radiation
1911
1912	call sagpol (tauto,ssato,asyto,rs1t(i,j),ts1t(i,j))
1913
1914	else
1915
1916	td1t(i,j)=exp(-tauto*csm(i,j))
1917	ts1t(i,j)=exp(-1.66*tauto)
1918	tt1t(i,j)=0.0
1919	rr1t(i,j)=0.0
1920	rs1t(i,j)=0.0
1921
1922	endif
1923
1924	!-----compute reflectance and transmittance for cloud layers
1925
1926	if (tauclb(i,j,k).lt.0.01 .or. fcld(i,j,k).lt.0.01) then
1927
1928	rr2t(i,j)=rr1t(i,j)
1929	tt2t(i,j)=tt1t(i,j)
1930	td2t(i,j)=td1t(i,j)
1931	rs2t(i,j)=rs1t(i,j)
1932	ts2t(i,j)=ts1t(i,j)
1933
1934	else
1935
1936	!- for direct incident radiation
1937
1938	tauto=tausto+tauclb(i,j,k)
1939	ssato=(ssatau+ssacl(i,j,k)*tauclb(i,j,k))/tauto+1.0e-8
1940	ssato=min(ssato,0.999999)
1941	asyto=(asysto+asycl(i,j,k)ssacl(i,j,k)tauclb(i,j,k))/ &
1942	(ssato*tauto)
1943
1944	call deledd (tauto,ssato,asyto,csm(i,j), &
1945	rr2t(i,j),tt2t(i,j),td2t(i,j))
1946
1947	!- for diffuse incident radiation
1948
1949	tauto=tausto+tauclf(i,j,k)
1950	ssato=(ssatau+ssacl(i,j,k)*tauclf(i,j,k))/tauto+1.0e-8
1951	ssato=min(ssato,0.999999)
1952	asyto=(asysto+asycl(i,j,k)ssacl(i,j,k)tauclf(i,j,k))/ &
1953	(ssato*tauto)
1954
1955	call sagpol (tauto,ssato,asyto,rs2t(i,j),ts2t(i,j))
1956
1957	endif
1958
1959	enddo
1960	enddo
1961
1962	do j=1,n
1963	do i=1,m
1964	rr(i,j,k,1)=rr1t(i,j)
1965	enddo
1966	enddo
1967	do j=1,n
1968	do i=1,m
1969	tt(i,j,k,1)=tt1t(i,j)
1970	enddo
1971	enddo
1972	do j=1,n
1973	do i=1,m
1974	td(i,j,k,1)=td1t(i,j)
1975	enddo
1976	enddo
1977	do j=1,n
1978	do i=1,m
1979	rs(i,j,k,1)=rs1t(i,j)
1980	enddo
1981	enddo
1982	do j=1,n
1983	do i=1,m
1984	ts(i,j,k,1)=ts1t(i,j)
1985	enddo
1986	enddo
1987
1988	do j=1,n
1989	do i=1,m
1990	rr(i,j,k,2)=rr2t(i,j)
1991	enddo
1992	enddo
1993	do j=1,n
1994	do i=1,m
1995	tt(i,j,k,2)=tt2t(i,j)
1996	enddo
1997	enddo
1998	do j=1,n
1999	do i=1,m
2000	td(i,j,k,2)=td2t(i,j)
2001	enddo
2002	enddo
2003	do j=1,n
2004	do i=1,m
2005	rs(i,j,k,2)=rs2t(i,j)
2006	enddo
2007	enddo
2008	do j=1,n
2009	do i=1,m
2010	ts(i,j,k,2)=ts2t(i,j)
2011	enddo
2012	enddo
2013
2014	300 continue
2015
2016	!-----flux calculations
2017
2018	call cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts, &
2019	fclr,fall,fallu,falld,fsdir,fsdif)
2020
2021	do k= 1, np+1
2022	do j= 1, n
2023	do i= 1, m
2024	flx(i,j,k) = flx(i,j,k)+fall(i,j,k)*hk(ib,ik)
2025	flxu(i,j,k) = flxu(i,j,k)+fallu(i,j,k)*hk(ib,ik)
2026	flxd(i,j,k) = flxd(i,j,k)+falld(i,j,k)*hk(ib,ik)
2027	enddo
2028	enddo
2029	do j= 1, n
2030	do i= 1, m
2031	flc(i,j,k) = flc(i,j,k)+fclr(i,j,k)*hk(ib,ik)
2032	enddo
2033	enddo
2034	enddo
2035
2036	!-----compute downward surface fluxes in the ir region
2037
2038	do j= 1, n
2039	do i= 1, m
2040	fdirir(i,j) = fdirir(i,j)+fsdir(i,j)*hk(ib,ik)
2041	fdifir(i,j) = fdifir(i,j)+fsdif(i,j)*hk(ib,ik)
2042	enddo
2043	enddo
2044
2045	200 continue
2046	100 continue
2047
2048	end subroutine solir
2049
2050	!********************************************************************
2051
2052	subroutine cldscale (m,n,ndim,np,cosz,fcld,taucld,ict,icb, &
2053	cc,tauclb,tauclf)
2054
2055	!********************************************************************
2056	!
2057	! This subroutine computes the high, middle, and
2058	! low cloud amounts and scales the cloud optical thickness.
2059	!
2060	! To simplify calculations in a cloudy atmosphere, clouds are
2061	! grouped into high, middle and low clouds separated by the levels
2062	! ict and icb (level 1 is the top of the model atmosphere).
2063	!
2064	! Within each of the three groups, clouds are assumed maximally
2065	! overlapped, and the cloud cover (cc) of a group is the maximum
2066	! cloud cover of all the layers in the group. The optical thickness
2067	! (taucld) of a given layer is then scaled to new values (tauclb and
2068	! tauclf) so that the layer reflectance corresponding to the cloud
2069	! cover cc is the same as the original reflectance with optical
2070	! thickness taucld and cloud cover fcld.
2071	!
2072	!---input parameters
2073	!
2074	! number of grid intervals in zonal direction (m)
2075	! number of grid intervals in meridional direction (n)
2076	! maximum number of grid intervals in meridional direction (ndim)
2077	! number of atmospheric layers (np)
2078	! cosine of the solar zenith angle (cosz)
2079	! fractional cloud cover (fcld)
2080	! cloud optical thickness (taucld)
2081	! index separating high and middle clouds (ict)
2082	! index separating middle and low clouds (icb)
2083	!
2084	!---output parameters
2085	!
2086	! fractional cover of high, middle, and low clouds (cc)
2087	! scaled cloud optical thickness for beam radiation (tauclb)
2088	! scaled cloud optical thickness for diffuse radiation (tauclf)
2089	!
2090	!********************************************************************
2091	implicit none
2092	!********************************************************************
2093
2094	!-----input parameters
2095
2096	integer m,n,ndim,np
2097	integer ict(m,ndim),icb(m,ndim)
2098	real cosz(m,ndim),fcld(m,ndim,np),taucld(m,ndim,np,2)
2099
2100	!-----output parameters
2101
2102	real cc(m,n,3),tauclb(m,n,np),tauclf(m,n,np)
2103
2104	!-----temporary variables
2105
2106	integer i,j,k,im,it,ia,kk
2107	real fm,ft,fa,xai,taux
2108
2109	!-----pre-computed table
2110
2111	integer nm,nt,na
2112	parameter (nm=11,nt=9,na=11)
2113	real dm,dt,da,t1,caib(nm,nt,na),caif(nt,na)
2114	parameter (dm=0.1,dt=0.30103,da=0.1,t1=-0.9031)
2115
2116	!-----include the pre-computed table of mcai for scaling the cloud optical
2117	! thickness under the assumption that clouds are maximally overlapped
2118	!
2119	! caib is for scaling the cloud optical thickness for direct radiation
2120	! caif is for scaling the cloud optical thickness for diffuse radiation
2121
2122
2123	data ((caib(1,i,j),j=1,11),i=1,9)/ &
2124	.000,0.068,0.140,0.216,0.298,0.385,0.481,0.586,0.705,0.840,1.000, &
2125	.000,0.052,0.106,0.166,0.230,0.302,0.383,0.478,0.595,0.752,1.000, &
2126	.000,0.038,0.078,0.120,0.166,0.218,0.276,0.346,0.438,0.582,1.000, &
2127	.000,0.030,0.060,0.092,0.126,0.164,0.206,0.255,0.322,0.442,1.000, &
2128	.000,0.025,0.051,0.078,0.106,0.136,0.170,0.209,0.266,0.462,1.000, &
2129	.000,0.023,0.046,0.070,0.095,0.122,0.150,0.187,0.278,0.577,1.000, &
2130	.000,0.022,0.043,0.066,0.089,0.114,0.141,0.187,0.354,0.603,1.000, &
2131	.000,0.021,0.042,0.063,0.086,0.108,0.135,0.214,0.349,0.565,1.000, &
2132	.000,0.021,0.041,0.062,0.083,0.105,0.134,0.202,0.302,0.479,1.000/
2133	data ((caib(2,i,j),j=1,11),i=1,9)/ &
2134	.000,0.088,0.179,0.272,0.367,0.465,0.566,0.669,0.776,0.886,1.000, &
2135	.000,0.079,0.161,0.247,0.337,0.431,0.531,0.637,0.749,0.870,1.000, &
2136	.000,0.065,0.134,0.207,0.286,0.372,0.466,0.572,0.692,0.831,1.000, &
2137	.000,0.049,0.102,0.158,0.221,0.290,0.370,0.465,0.583,0.745,1.000, &
2138	.000,0.037,0.076,0.118,0.165,0.217,0.278,0.354,0.459,0.638,1.000, &
2139	.000,0.030,0.061,0.094,0.130,0.171,0.221,0.286,0.398,0.631,1.000, &
2140	.000,0.026,0.052,0.081,0.111,0.146,0.189,0.259,0.407,0.643,1.000, &
2141	.000,0.023,0.047,0.072,0.098,0.129,0.170,0.250,0.387,0.598,1.000, &
2142	.000,0.022,0.044,0.066,0.090,0.118,0.156,0.224,0.328,0.508,1.000/
2143	data ((caib(3,i,j),j=1,11),i=1,9)/ &
2144	.000,0.094,0.189,0.285,0.383,0.482,0.582,0.685,0.788,0.894,1.000, &
2145	.000,0.088,0.178,0.271,0.366,0.465,0.565,0.669,0.776,0.886,1.000, &
2146	.000,0.079,0.161,0.247,0.337,0.431,0.531,0.637,0.750,0.870,1.000, &
2147	.000,0.066,0.134,0.209,0.289,0.375,0.470,0.577,0.697,0.835,1.000, &
2148	.000,0.050,0.104,0.163,0.227,0.300,0.383,0.483,0.606,0.770,1.000, &
2149	.000,0.038,0.080,0.125,0.175,0.233,0.302,0.391,0.518,0.710,1.000, &
2150	.000,0.031,0.064,0.100,0.141,0.188,0.249,0.336,0.476,0.689,1.000, &
2151	.000,0.026,0.054,0.084,0.118,0.158,0.213,0.298,0.433,0.638,1.000, &
2152	.000,0.023,0.048,0.074,0.102,0.136,0.182,0.254,0.360,0.542,1.000/
2153	data ((caib(4,i,j),j=1,11),i=1,9)/ &
2154	.000,0.096,0.193,0.290,0.389,0.488,0.589,0.690,0.792,0.896,1.000, &
2155	.000,0.092,0.186,0.281,0.378,0.477,0.578,0.680,0.785,0.891,1.000, &
2156	.000,0.086,0.174,0.264,0.358,0.455,0.556,0.660,0.769,0.882,1.000, &
2157	.000,0.074,0.153,0.235,0.323,0.416,0.514,0.622,0.737,0.862,1.000, &
2158	.000,0.061,0.126,0.195,0.271,0.355,0.449,0.555,0.678,0.823,1.000, &
2159	.000,0.047,0.098,0.153,0.215,0.286,0.370,0.471,0.600,0.770,1.000, &
2160	.000,0.037,0.077,0.120,0.170,0.230,0.303,0.401,0.537,0.729,1.000, &
2161	.000,0.030,0.062,0.098,0.138,0.187,0.252,0.343,0.476,0.673,1.000, &
2162	.000,0.026,0.053,0.082,0.114,0.154,0.207,0.282,0.391,0.574,1.000/
2163	data ((caib(5,i,j),j=1,11),i=1,9)/ &
2164	.000,0.097,0.194,0.293,0.392,0.492,0.592,0.693,0.794,0.897,1.000, &
2165	.000,0.094,0.190,0.286,0.384,0.483,0.584,0.686,0.789,0.894,1.000, &
2166	.000,0.090,0.181,0.274,0.370,0.468,0.569,0.672,0.778,0.887,1.000, &
2167	.000,0.081,0.165,0.252,0.343,0.439,0.539,0.645,0.757,0.874,1.000, &
2168	.000,0.069,0.142,0.218,0.302,0.392,0.490,0.598,0.717,0.850,1.000, &
2169	.000,0.054,0.114,0.178,0.250,0.330,0.422,0.529,0.656,0.810,1.000, &
2170	.000,0.042,0.090,0.141,0.200,0.269,0.351,0.455,0.589,0.764,1.000, &
2171	.000,0.034,0.070,0.112,0.159,0.217,0.289,0.384,0.515,0.703,1.000, &
2172	.000,0.028,0.058,0.090,0.128,0.174,0.231,0.309,0.420,0.602,1.000/
2173	data ((caib(6,i,j),j=1,11),i=1,9)/ &
2174	.000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, &
2175	.000,0.096,0.193,0.290,0.389,0.488,0.588,0.690,0.792,0.895,1.000, &
2176	.000,0.092,0.186,0.281,0.378,0.477,0.577,0.680,0.784,0.891,1.000, &
2177	.000,0.086,0.174,0.264,0.358,0.455,0.556,0.661,0.769,0.882,1.000, &
2178	.000,0.075,0.154,0.237,0.325,0.419,0.518,0.626,0.741,0.865,1.000, &
2179	.000,0.062,0.129,0.201,0.279,0.366,0.462,0.571,0.694,0.836,1.000, &
2180	.000,0.049,0.102,0.162,0.229,0.305,0.394,0.501,0.631,0.793,1.000, &
2181	.000,0.038,0.080,0.127,0.182,0.245,0.323,0.422,0.550,0.730,1.000, &
2182	.000,0.030,0.064,0.100,0.142,0.192,0.254,0.334,0.448,0.627,1.000/
2183	data ((caib(7,i,j),j=1,11),i=1,9)/ &
2184	.000,0.098,0.198,0.296,0.396,0.496,0.596,0.696,0.797,0.898,1.000, &
2185	.000,0.097,0.194,0.293,0.392,0.491,0.591,0.693,0.794,0.897,1.000, &
2186	.000,0.094,0.190,0.286,0.384,0.483,0.583,0.686,0.789,0.894,1.000, &
2187	.000,0.089,0.180,0.274,0.369,0.467,0.568,0.672,0.778,0.887,1.000, &
2188	.000,0.081,0.165,0.252,0.344,0.440,0.541,0.646,0.758,0.875,1.000, &
2189	.000,0.069,0.142,0.221,0.306,0.397,0.496,0.604,0.722,0.854,1.000, &
2190	.000,0.056,0.116,0.182,0.256,0.338,0.432,0.540,0.666,0.816,1.000, &
2191	.000,0.043,0.090,0.143,0.203,0.273,0.355,0.455,0.583,0.754,1.000, &
2192	.000,0.034,0.070,0.111,0.157,0.210,0.276,0.359,0.474,0.650,1.000/
2193	data ((caib(8,i,j),j=1,11),i=1,9)/ &
2194	.000,0.099,0.198,0.298,0.398,0.497,0.598,0.698,0.798,0.899,1.000, &
2195	.000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, &
2196	.000,0.096,0.193,0.290,0.390,0.489,0.589,0.690,0.793,0.896,1.000, &
2197	.000,0.093,0.186,0.282,0.379,0.478,0.578,0.681,0.786,0.892,1.000, &
2198	.000,0.086,0.175,0.266,0.361,0.458,0.558,0.663,0.771,0.883,1.000, &
2199	.000,0.076,0.156,0.240,0.330,0.423,0.523,0.630,0.744,0.867,1.000, &
2200	.000,0.063,0.130,0.203,0.282,0.369,0.465,0.572,0.694,0.834,1.000, &
2201	.000,0.049,0.102,0.161,0.226,0.299,0.385,0.486,0.611,0.774,1.000, &
2202	.000,0.038,0.078,0.122,0.172,0.229,0.297,0.382,0.498,0.672,1.000/
2203	data ((caib(9,i,j),j=1,11),i=1,9)/ &
2204	.000,0.099,0.199,0.298,0.398,0.498,0.598,0.699,0.799,0.899,1.000, &
2205	.000,0.099,0.198,0.298,0.398,0.497,0.598,0.698,0.798,0.899,1.000, &
2206	.000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, &
2207	.000,0.096,0.193,0.290,0.389,0.488,0.588,0.690,0.792,0.895,1.000, &
2208	.000,0.092,0.185,0.280,0.376,0.474,0.575,0.678,0.782,0.890,1.000, &
2209	.000,0.084,0.170,0.259,0.351,0.447,0.547,0.652,0.762,0.878,1.000, &
2210	.000,0.071,0.146,0.224,0.308,0.398,0.494,0.601,0.718,0.850,1.000, &
2211	.000,0.056,0.114,0.178,0.248,0.325,0.412,0.514,0.638,0.793,1.000, &
2212	.000,0.042,0.086,0.134,0.186,0.246,0.318,0.405,0.521,0.691,1.000/
2213	data ((caib(10,i,j),j=1,11),i=1,9)/ &
2214	.000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, &
2215	.000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, &
2216	.000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, &
2217	.000,0.100,0.199,0.298,0.398,0.498,0.598,0.698,0.798,0.899,1.000, &
2218	.000,0.098,0.196,0.294,0.392,0.491,0.590,0.691,0.793,0.896,1.000, &
2219	.000,0.092,0.185,0.278,0.374,0.470,0.570,0.671,0.777,0.886,1.000, &
2220	.000,0.081,0.162,0.246,0.333,0.424,0.521,0.625,0.738,0.862,1.000, &
2221	.000,0.063,0.128,0.196,0.270,0.349,0.438,0.540,0.661,0.809,1.000, &
2222	.000,0.046,0.094,0.146,0.202,0.264,0.337,0.426,0.542,0.710,1.000/
2223	data ((caib(11,i,j),j=1,11),i=1,9)/ &
2224	.000,0.101,0.202,0.302,0.402,0.502,0.602,0.702,0.802,0.901,1.000, &
2225	.000,0.102,0.202,0.303,0.404,0.504,0.604,0.703,0.802,0.902,1.000, &
2226	.000,0.102,0.205,0.306,0.406,0.506,0.606,0.706,0.804,0.902,1.000, &
2227	.000,0.104,0.207,0.309,0.410,0.510,0.609,0.707,0.805,0.902,1.000, &
2228	.000,0.106,0.208,0.309,0.409,0.508,0.606,0.705,0.803,0.902,1.000, &
2229	.000,0.102,0.202,0.298,0.395,0.493,0.590,0.690,0.790,0.894,1.000, &
2230	.000,0.091,0.179,0.267,0.357,0.449,0.545,0.647,0.755,0.872,1.000, &
2231	.000,0.073,0.142,0.214,0.290,0.372,0.462,0.563,0.681,0.822,1.000, &
2232	.000,0.053,0.104,0.158,0.217,0.281,0.356,0.446,0.562,0.726,1.000/
2233	data ((caif(i,j),j=1,11),i=1,9)/ &
2234	.000,0.099,0.198,0.297,0.397,0.496,0.597,0.697,0.798,0.899,1.000, &
2235	.000,0.098,0.196,0.294,0.394,0.494,0.594,0.694,0.796,0.898,1.000, &
2236	.000,0.096,0.192,0.290,0.388,0.487,0.587,0.689,0.792,0.895,1.000, &
2237	.000,0.092,0.185,0.280,0.376,0.476,0.576,0.678,0.783,0.890,1.000, &
2238	.000,0.085,0.173,0.263,0.357,0.454,0.555,0.659,0.768,0.881,1.000, &
2239	.000,0.076,0.154,0.237,0.324,0.418,0.517,0.624,0.738,0.864,1.000, &
2240	.000,0.063,0.131,0.203,0.281,0.366,0.461,0.567,0.688,0.830,1.000, &
2241	.000,0.052,0.107,0.166,0.232,0.305,0.389,0.488,0.610,0.770,1.000, &
2242	.000,0.043,0.088,0.136,0.189,0.248,0.317,0.400,0.510,0.675,1.000/
2243
2244	!-----clouds within each of the high, middle, and low clouds are assumed
2245	! to be maximally overlapped, and the cloud cover (cc) for a group
2246	! (high, middle, or low) is the maximum cloud cover of all the layers
2247	! within a group
2248
2249	do j=1,n
2250	do i=1,m
2251	cc(i,j,1)=0.0
2252	cc(i,j,2)=0.0
2253	cc(i,j,3)=0.0
2254	enddo
2255	enddo
2256	do j=1,n
2257	do i=1,m
2258	do k=1,ict(i,j)-1
2259	cc(i,j,1)=max(cc(i,j,1),fcld(i,j,k))
2260	enddo
2261	enddo
2262	enddo
2263
2264	do j=1,n
2265	do i=1,m
2266	do k=ict(i,j),icb(i,j)-1
2267	cc(i,j,2)=max(cc(i,j,2),fcld(i,j,k))
2268	enddo
2269	enddo
2270	enddo
2271
2272	do j=1,n
2273	do i=1,m
2274	do k=icb(i,j),np
2275	cc(i,j,3)=max(cc(i,j,3),fcld(i,j,k))
2276	enddo
2277	enddo
2278	enddo
2279
2280	!-----scale the cloud optical thickness.
2281	! taucld(i,j,k,1) is the optical thickness for ice particles, and
2282	! taucld(i,j,k,2) is the optical thickness for liquid particles.
2283
2284	do j=1,n
2285	do i=1,m
2286
2287	do k=1,np
2288
2289	if(k.lt.ict(i,j)) then
2290	kk=1
2291	elseif(k.ge.ict(i,j) .and. k.lt.icb(i,j)) then
2292	kk=2
2293	else
2294	kk=3
2295	endif
2296
2297	tauclb(i,j,k) = 0.0
2298	tauclf(i,j,k) = 0.0
2299
2300	taux=taucld(i,j,k,1)+taucld(i,j,k,2)
2301	if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then
2302
2303	!-----normalize cloud cover
2304
2305	fa=fcld(i,j,k)/cc(i,j,kk)
2306
2307	!-----table look-up
2308
2309	taux=min(taux,32.)
2310
2311	fm=cosz(i,j)/dm
2312	ft=(log10(taux)-t1)/dt
2313	fa=fa/da
2314
2315	im=int(fm+1.5)
2316	it=int(ft+1.5)
2317	ia=int(fa+1.5)
2318
2319	im=max(im,2)
2320	it=max(it,2)
2321	ia=max(ia,2)
2322
2323	im=min(im,nm-1)
2324	it=min(it,nt-1)
2325	ia=min(ia,na-1)
2326
2327	fm=fm-float(im-1)
2328	ft=ft-float(it-1)
2329	fa=fa-float(ia-1)
2330
2331	!-----scale cloud optical thickness for beam radiation.
2332	! the scaling factor, xai, is a function of the solar zenith
2333	! angle, optical thickness, and cloud cover.
2334
2335	xai= (-caib(im-1,it,ia)*(1.-fm)+ &
2336	caib(im+1,it,ia)(1.+fm))fm.5+caib(im,it,ia)(1.-fm*fm)
2337
2338	xai=xai+(-caib(im,it-1,ia)*(1.-ft)+ &
2339	caib(im,it+1,ia)(1.+ft))ft.5+caib(im,it,ia)(1.-ft*ft)
2340
2341	xai=xai+(-caib(im,it,ia-1)*(1.-fa)+ &
2342	caib(im,it,ia+1)(1.+fa))fa.5+caib(im,it,ia)(1.-fa*fa)
2343
2344	xai= xai-2.*caib(im,it,ia)
2345	xai=max(xai,0.0)
2346
2347	tauclb(i,j,k) = taux*xai
2348
2349	!-----scale cloud optical thickness for diffuse radiation.
2350	! the scaling factor, xai, is a function of the cloud optical
2351	! thickness and cover but not the solar zenith angle.
2352
2353	xai= (-caif(it-1,ia)*(1.-ft)+ &
2354	caif(it+1,ia)(1.+ft))ft.5+caif(it,ia)(1.-ft*ft)
2355
2356	xai=xai+(-caif(it,ia-1)*(1.-fa)+ &
2357	caif(it,ia+1)(1.+fa))fa.5+caif(it,ia)(1.-fa*fa)
2358
2359	xai= xai-caif(it,ia)
2360	xai=max(xai,0.0)
2361
2362	tauclf(i,j,k) = taux*xai
2363
2364	endif
2365
2366	enddo
2367	enddo
2368	enddo
2369
2370	end subroutine cldscale
2371
2372	!*********************************************************************
2373
2374	subroutine deledd(tau,ssc,g0,csm,rr,tt,td)
2375
2376	!*********************************************************************
2377	!
2378	!-----uses the delta-eddington approximation to compute the
2379	! bulk scattering properties of a single layer
2380	! coded following King and Harshvardhan (JAS, 1986)
2381	!
2382	! inputs:
2383	!
2384	! tau: the effective optical thickness
2385	! ssc: the effective single scattering albedo
2386	! g0: the effective asymmetry factor
2387	! csm: the effective secant of the zenith angle
2388	!
2389	! outputs:
2390	!
2391	! rr: the layer reflection of the direct beam
2392	! tt: the layer diffuse transmission of the direct beam
2393	! td: the layer direct transmission of the direct beam
2394	!
2395	!*********************************************************************
2396	implicit none
2397	!*********************************************************************
2398
2399	real zero,one,two,three,four,fourth,seven,thresh
2400	parameter (one =1., three=3.)
2401	parameter (two =2., seven=7.)
2402	parameter (four=4., fourth=.25)
2403	parameter (zero=0., thresh=1.e-8)
2404
2405	!-----input parameters
2406	real tau,ssc,g0,csm
2407
2408	!-----output parameters
2409	real rr,tt,td
2410
2411	!-----temporary parameters
2412
2413	real zth,ff,xx,taup,sscp,gp,gm1,gm2,gm3,akk,alf1,alf2, &
2414	all,bll,st7,st8,cll,dll,fll,ell,st1,st2,st3,st4
2415
2416	!---------------------------------------------------------------------
2417
2418	zth = one / csm
2419
2420	! delta-eddington scaling of single scattering albedo,
2421	! optical thickness, and asymmetry factor,
2422	! K & H eqs(27-29)
2423
2424	ff = g0*g0
2425	xx = one-ff*ssc
2426	taup= tau*xx
2427	sscp= ssc*(one-ff)/xx
2428	gp = g0/(one+g0)
2429
2430	! gamma1, gamma2, and gamma3. see table 2 and eq(26) K & H
2431	! ssc and gp are the d-s single scattering
2432	! albedo and asymmetry factor.
2433
2434	xx = three*gp
2435	gm1 = (seven - sscp(four+xx))fourth
2436	gm2 = -(one - sscp(four-xx))fourth
2437
2438	! akk is k as defined in eq(25) of K & H
2439
2440	akk = sqrt((gm1+gm2)*(gm1-gm2))
2441
2442	xx = akk * zth
2443	st7 = one - xx
2444	st8 = one + xx
2445	st3 = st7 * st8
2446
2447	if (abs(st3) .lt. thresh) then
2448	zth = zth + 0.001
2449	xx = akk * zth
2450	st7 = one - xx
2451	st8 = one + xx
2452	st3 = st7 * st8
2453	endif
2454
2455	! extinction of the direct beam transmission
2456
2457	td = exp(-taup/zth)
2458
2459	! alf1 and alf2 are alpha1 and alpha2 from eqs (23) & (24) of K & H
2460
2461	gm3 = (two - zththreegp)*fourth
2462	xx = gm1 - gm2
2463	alf1 = gm1 - gm3 * xx
2464	alf2 = gm2 + gm3 * xx
2465
2466	! all is last term in eq(21) of K & H
2467	! bll is last term in eq(22) of K & H
2468
2469	xx = akk * two
2470	all = (gm3 - alf2 * zth )xxtd
2471	bll = (one - gm3 + alf1zth)xx
2472
2473	xx = akk * gm3
2474	cll = (alf2 + xx) * st7
2475	dll = (alf2 - xx) * st8
2476
2477	xx = akk * (one-gm3)
2478	fll = (alf1 + xx) * st8
2479	ell = (alf1 - xx) * st7
2480
2481	st2 = exp(-akk*taup)
2482	st4 = st2 * st2
2483
2484	st1 = sscp / ((akk+gm1 + (akk-gm1)st4) st3)
2485
2486	! rr is r-hat of eq(21) of K & H
2487	! tt is diffuse part of t-hat of eq(22) of K & H
2488
2489	rr = ( cll-dllst4 -allst2)*st1
2490	tt = - ((fll-ellst4)td-bllst2)st1
2491
2492	rr = max(rr,zero)
2493	tt = max(tt,zero)
2494
2495	end subroutine deledd
2496
2497	!*********************************************************************
2498
2499	subroutine sagpol(tau,ssc,g0,rll,tll)
2500
2501	!*********************************************************************
2502	!-----transmittance (tll) and reflectance (rll) of diffuse radiation
2503	! follows Sagan and Pollock (JGR, 1967).
2504	! also, eq.(31) of Lacis and Hansen (JAS, 1974).
2505	!
2506	!-----input parameters:
2507	!
2508	! tau: the effective optical thickness
2509	! ssc: the effective single scattering albedo
2510	! g0: the effective asymmetry factor
2511	!
2512	!-----output parameters:
2513	!
2514	! rll: the layer reflection of diffuse radiation
2515	! tll: the layer transmission of diffuse radiation
2516	!
2517	!*********************************************************************
2518	implicit none
2519	!*********************************************************************
2520
2521	real one,three,four
2522	parameter (one=1., three=3., four=4.)
2523
2524	!-----output parameters:
2525
2526	real tau,ssc,g0
2527
2528	!-----output parameters:
2529
2530	real rll,tll
2531
2532	!-----temporary arrays
2533
2534	real xx,uuu,ttt,emt,up1,um1,st1
2535
2536	xx = one-ssc*g0
2537	uuu = sqrt( xx/(one-ssc))
2538	ttt = sqrt( xx(one-ssc)three )*tau
2539	emt = exp(-ttt)
2540	up1 = uuu + one
2541	um1 = uuu - one
2542	xx = um1*emt
2543	st1 = one / ((up1+xx) * (up1-xx))
2544	rll = up1um1(one-emtemt)st1
2545	tll = uuufouremt *st1
2546
2547	end subroutine sagpol
2548
2549	!*******************************************************************
2550
2551	subroutine cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts,&
2552	fclr,fall,fallu,falld,fsdir,fsdif)
2553
2554	!*******************************************************************
2555	! compute upward and downward fluxes using a two-stream adding method
2556	! following equations (3)-(5) of Chou (1992, JAS).
2557	!
2558	! clouds are grouped into high, middle, and low clouds which are
2559	! assumed randomly overlapped. It involves eight sets of calculations.
2560	! In each set of calculations, each atmospheric layer is homogeneous,
2561	! either totally filled with clouds or without clouds.
2562
2563	! input parameters:
2564	!
2565	! m: number of soundings in zonal direction
2566	! n: number of soundings in meridional direction
2567	! np: number of atmospheric layers
2568	! ict: the level separating high and middle clouds
2569	! icb: the level separating middle and low clouds
2570	! cc: effective cloud covers for high, middle and low clouds
2571	! tt: diffuse transmission of a layer illuminated by beam radiation
2572	! td: direct beam tranmssion
2573	! ts: transmission of a layer illuminated by diffuse radiation
2574	! rr: reflection of a layer illuminated by beam radiation
2575	! rs: reflection of a layer illuminated by diffuse radiation
2576	!
2577	! output parameters:
2578	!
2579	! fclr: clear-sky flux (downward minus upward)
2580	! fall: all-sky flux (downward minus upward)
2581	! fsdir: surface direct downward flux
2582	! fsdif: surface diffuse downward flux
2583	!
2584	!*********************************************************************c
2585	implicit none
2586	!*********************************************************************c
2587
2588	!-----input parameters
2589
2590	integer m,n,np
2591	integer ict(m,n),icb(m,n)
2592
2593	real rr(m,n,np+1,2),tt(m,n,np+1,2),td(m,n,np+1,2)
2594	real rs(m,n,np+1,2),ts(m,n,np+1,2)
2595	real cc(m,n,3)
2596	logical overcast
2597
2598	!-----temporary array
2599
2600	integer i,j,k,ih,im,is,itm
2601	real rra(m,n,np+1,2,2),tta(m,n,np+1,2,2),tda(m,n,np+1,2,2)
2602	real rsa(m,n,np+1,2,2),rxa(m,n,np+1,2,2)
2603	real ch(m,n),cm(m,n),ct(m,n),flxdn(m,n,np+1)
2604	real flxdnu(m,n,np+1),flxdnd(m,n,np+1)
2605	real fdndir(m,n),fdndif(m,n),fupdif
2606	real denm,xx
2607
2608	!-----output parameters
2609
2610	real fclr(m,n,np+1),fall(m,n,np+1)
2611	real fallu(m,n,np+1),falld(m,n,np+1)
2612	real fsdir(m,n),fsdif(m,n)
2613
2614	!-----initialize all-sky flux (fall) and surface downward fluxes
2615
2616	do k=1,np+1
2617	do j=1,n
2618	do i=1,m
2619	fclr(i,j,k)=0.0
2620	fall(i,j,k)=0.0
2621	fallu(i,j,k)=0.0
2622	falld(i,j,k)=0.0
2623	enddo
2624	enddo
2625	enddo
2626
2627	do j=1,n
2628	do i=1,m
2629	fsdir(i,j)=0.0
2630	fsdif(i,j)=0.0
2631	enddo
2632	enddo
2633
2634	!-----compute transmittances and reflectances for a composite of
2635	! layers. layers are added one at a time, going down from the top.
2636	! tda is the composite transmittance illuminated by beam radiation
2637	! tta is the composite diffuse transmittance illuminated by
2638	! beam radiation
2639	! rsa is the composite reflectance illuminated from below
2640	! by diffuse radiation
2641	! tta and rsa are computed from eqs. (4b) and (3b) of Chou
2642
2643	itm=1
2644
2645	!-----if overcas.=.true., set itm=2, and only one set of fluxes is computed
2646
2647	if (overcast) itm=2
2648
2649	!-----for high clouds. indices 1 and 2 denote clear and cloudy
2650	! situations, respectively.
2651
2652	do 10 ih=itm,2
2653
2654	do j= 1, n
2655	do i= 1, m
2656	tda(i,j,1,ih,1)=td(i,j,1,ih)
2657	tta(i,j,1,ih,1)=tt(i,j,1,ih)
2658	rsa(i,j,1,ih,1)=rs(i,j,1,ih)
2659	tda(i,j,1,ih,2)=td(i,j,1,ih)
2660	tta(i,j,1,ih,2)=tt(i,j,1,ih)
2661	rsa(i,j,1,ih,2)=rs(i,j,1,ih)
2662	enddo
2663	enddo
2664
2665	do j= 1, n
2666	do i= 1, m
2667	do k= 2, ict(i,j)-1
2668	denm = ts(i,j,k,ih)/( 1.-rsa(i,j,k-1,ih,1)*rs(i,j,k,ih))
2669	tda(i,j,k,ih,1)= tda(i,j,k-1,ih,1)*td(i,j,k,ih)
2670	tta(i,j,k,ih,1)= tda(i,j,k-1,ih,1)*tt(i,j,k,ih) &
2671	+(tda(i,j,k-1,ih,1)*rr(i,j,k,ih) &
2672	rsa(i,j,k-1,ih,1)+tta(i,j,k-1,ih,1))denm
2673	rsa(i,j,k,ih,1)= rs(i,j,k,ih)+ts(i,j,k,ih) &
2674	rsa(i,j,k-1,ih,1)denm
2675	tda(i,j,k,ih,2)= tda(i,j,k,ih,1)
2676	tta(i,j,k,ih,2)= tta(i,j,k,ih,1)
2677	rsa(i,j,k,ih,2)= rsa(i,j,k,ih,1)
2678	enddo
2679	enddo
2680	enddo
2681
2682	!-----for middle clouds
2683
2684	do 10 im=itm,2
2685
2686	do j= 1, n
2687	do i= 1, m
2688	do k= ict(i,j), icb(i,j)-1
2689	denm = ts(i,j,k,im)/( 1.-rsa(i,j,k-1,ih,im)*rs(i,j,k,im))
2690	tda(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*td(i,j,k,im)
2691	tta(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*tt(i,j,k,im) &
2692	+(tda(i,j,k-1,ih,im)*rr(i,j,k,im) &
2693	rsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))denm
2694	rsa(i,j,k,ih,im)= rs(i,j,k,im)+ts(i,j,k,im) &
2695	rsa(i,j,k-1,ih,im)denm
2696	enddo
2697	enddo
2698	enddo
2699
2700	10 continue
2701
2702	!-----layers are added one at a time, going up from the surface.
2703	! rra is the composite reflectance illuminated by beam radiation
2704	! rxa is the composite reflectance illuminated from above
2705	! by diffuse radiation
2706	! rra and rxa are computed from eqs. (4a) and (3a) of Chou
2707
2708	!-----for the low clouds
2709
2710	do 20 is=itm,2
2711
2712	do j= 1, n
2713	do i= 1, m
2714	rra(i,j,np+1,1,is)=rr(i,j,np+1,is)
2715	rxa(i,j,np+1,1,is)=rs(i,j,np+1,is)
2716	rra(i,j,np+1,2,is)=rr(i,j,np+1,is)
2717	rxa(i,j,np+1,2,is)=rs(i,j,np+1,is)
2718	enddo
2719	enddo
2720
2721	do j= 1, n
2722	do i= 1, m
2723	do k=np,icb(i,j),-1
2724	denm=ts(i,j,k,is)/( 1.-rs(i,j,k,is)*rxa(i,j,k+1,1,is) )
2725	rra(i,j,k,1,is)=rr(i,j,k,is)+(td(i,j,k,is) &
2726	rra(i,j,k+1,1,is)+tt(i,j,k,is)rxa(i,j,k+1,1,is))*denm
2727	rxa(i,j,k,1,is)= rs(i,j,k,is)+ts(i,j,k,is) &
2728	rxa(i,j,k+1,1,is)denm
2729	rra(i,j,k,2,is)=rra(i,j,k,1,is)
2730	rxa(i,j,k,2,is)=rxa(i,j,k,1,is)
2731	enddo
2732	enddo
2733	enddo
2734
2735	!-----for middle clouds
2736
2737	do 20 im=itm,2
2738
2739	do j= 1, n
2740	do i= 1, m
2741	do k= icb(i,j)-1,ict(i,j),-1
2742	denm=ts(i,j,k,im)/( 1.-rs(i,j,k,im)*rxa(i,j,k+1,im,is) )
2743	rra(i,j,k,im,is)= rr(i,j,k,im)+(td(i,j,k,im) &
2744	rra(i,j,k+1,im,is)+tt(i,j,k,im)rxa(i,j,k+1,im,is))*denm
2745	rxa(i,j,k,im,is)= rs(i,j,k,im)+ts(i,j,k,im) &
2746	rxa(i,j,k+1,im,is)denm
2747	enddo
2748	enddo
2749	enddo
2750
2751	20 continue
2752
2753	!-----integration over eight sky situations.
2754	! ih, im, is denotes high, middle and low cloud groups.
2755
2756	do 100 ih=itm,2
2757
2758	!-----clear portion
2759
2760	if(ih.eq.1) then
2761	do j=1,n
2762	do i=1,m
2763	ch(i,j)=1.0-cc(i,j,1)
2764	enddo
2765	enddo
2766
2767	else
2768
2769	!-----cloudy portion
2770
2771	do j=1,n
2772	do i=1,m
2773	ch(i,j)=cc(i,j,1)
2774	enddo
2775	enddo
2776
2777	endif
2778
2779	do 100 im=itm,2
2780
2781	!-----clear portion
2782
2783	if(im.eq.1) then
2784
2785	do j=1,n
2786	do i=1,m
2787	cm(i,j)=ch(i,j)*(1.0-cc(i,j,2))
2788	enddo
2789	enddo
2790
2791	else
2792
2793	!-----cloudy portion
2794
2795	do j=1,n
2796	do i=1,m
2797	cm(i,j)=ch(i,j)*cc(i,j,2)
2798	enddo
2799	enddo
2800
2801	endif
2802
2803	do 100 is=itm,2
2804
2805	!-----clear portion
2806
2807	if(is.eq.1) then
2808
2809	do j=1,n
2810	do i=1,m
2811	ct(i,j)=cm(i,j)*(1.0-cc(i,j,3))
2812	enddo
2813	enddo
2814
2815	else
2816
2817	!-----cloudy portion
2818
2819	do j=1,n
2820	do i=1,m
2821	ct(i,j)=cm(i,j)*cc(i,j,3)
2822	enddo
2823	enddo
2824
2825	endif
2826
2827	!-----add one layer at a time, going down.
2828
2829	do j= 1, n
2830	do i= 1, m
2831	do k= icb(i,j), np
2832	denm = ts(i,j,k,is)/( 1.-rsa(i,j,k-1,ih,im)*rs(i,j,k,is) )
2833	tda(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*td(i,j,k,is)
2834	tta(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*tt(i,j,k,is) &
2835	+(tda(i,j,k-1,ih,im)*rr(i,j,k,is) &
2836	rsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))denm
2837	rsa(i,j,k,ih,im)= rs(i,j,k,is)+ts(i,j,k,is) &
2838	rsa(i,j,k-1,ih,im)denm
2839	enddo
2840	enddo
2841	enddo
2842
2843	!-----add one layer at a time, going up.
2844
2845	do j= 1, n
2846	do i= 1, m
2847	do k= ict(i,j)-1,1,-1
2848	denm =ts(i,j,k,ih)/(1.-rs(i,j,k,ih)*rxa(i,j,k+1,im,is))
2849	rra(i,j,k,im,is)= rr(i,j,k,ih)+(td(i,j,k,ih) &
2850	rra(i,j,k+1,im,is)+tt(i,j,k,ih)rxa(i,j,k+1,im,is))*denm
2851	rxa(i,j,k,im,is)= rs(i,j,k,ih)+ts(i,j,k,ih) &
2852	rxa(i,j,k+1,im,is)denm
2853	enddo
2854	enddo
2855	enddo
2856
2857	!-----compute fluxes following eq (5) of Chou (1992)
2858
2859	! fdndir is the direct downward flux
2860	! fdndif is the diffuse downward flux
2861	! fupdif is the diffuse upward flux
2862
2863	do k=2,np+1
2864	do j=1, n
2865	do i=1, m
2866	denm= 1./(1.- rxa(i,j,k,im,is)*rsa(i,j,k-1,ih,im))
2867	fdndir(i,j)= tda(i,j,k-1,ih,im)
2868	xx = tda(i,j,k-1,ih,im)*rra(i,j,k,im,is)
2869	fdndif(i,j)= (xxrsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))denm
2870	fupdif= (xx+tta(i,j,k-1,ih,im)rxa(i,j,k,im,is))denm
2871	flxdn(i,j,k)=fdndir(i,j)+fdndif(i,j)-fupdif
2872	flxdnu(i,j,k)=-fupdif
2873	flxdnd(i,j,k)=fdndir(i,j)+fdndif(i,j)
2874	enddo
2875	enddo
2876	enddo
2877
2878	do j=1, n
2879	do i=1, m
2880	flxdn(i,j,1)=1.0-rra(i,j,1,im,is)
2881	flxdnu(i,j,1)=-rra(i,j,1,im,is)
2882	flxdnd(i,j,1)=1.0
2883	enddo
2884	enddo
2885
2886	!-----summation of fluxes over all (eight) sky situations.
2887
2888	do k=1,np+1
2889	do j=1,n
2890	do i=1,m
2891	if(ih.eq.1 .and. im.eq.1 .and. is.eq.1) then
2892	fclr(i,j,k)=flxdn(i,j,k)
2893	endif
2894	fall(i,j,k)=fall(i,j,k)+flxdn(i,j,k)*ct(i,j)
2895	fallu(i,j,k)=fallu(i,j,k)+flxdnu(i,j,k)*ct(i,j)
2896	falld(i,j,k)=falld(i,j,k)+flxdnd(i,j,k)*ct(i,j)
2897	enddo
2898	enddo
2899	enddo
2900
2901	do j=1,n
2902	do i=1,m
2903	fsdir(i,j)=fsdir(i,j)+fdndir(i,j)*ct(i,j)
2904	fsdif(i,j)=fsdif(i,j)+fdndif(i,j)*ct(i,j)
2905	enddo
2906	enddo
2907
2908	100 continue
2909
2910	end subroutine cldflx
2911
2912	!*****************************************************************
2913
2914	subroutine flxco2(m,n,np,swc,swh,csm,df)
2915
2916	!*****************************************************************
2917
2918	!-----compute the reduction of clear-sky downward solar flux
2919	! due to co2 absorption.
2920
2921	implicit none
2922
2923	!-----input parameters
2924
2925	integer m,n,np
2926	real csm(m,n),swc(m,n,np+1),swh(m,n,np+1),cah(22,19)
2927
2928	!-----output (undated) parameter
2929
2930	real df(m,n,np+1)
2931
2932	!-----temporary array
2933
2934	integer i,j,k,ic,iw
2935	real xx,clog,wlog,dc,dw,x1,x2,y2
2936
2937	!********************************************************************
2938	!-----include co2 look-up table
2939
2940	data ((cah(i,j),i=1,22),j= 1, 5)/ &
2941	0.9923, 0.9922, 0.9921, 0.9920, 0.9916, 0.9910, 0.9899, 0.9882, &
2942	0.9856, 0.9818, 0.9761, 0.9678, 0.9558, 0.9395, 0.9188, 0.8945, &
2943	0.8675, 0.8376, 0.8029, 0.7621, 0.7154, 0.6647, 0.9876, 0.9876, &
2944	0.9875, 0.9873, 0.9870, 0.9864, 0.9854, 0.9837, 0.9811, 0.9773, &
2945	0.9718, 0.9636, 0.9518, 0.9358, 0.9153, 0.8913, 0.8647, 0.8350, &
2946	0.8005, 0.7599, 0.7133, 0.6627, 0.9808, 0.9807, 0.9806, 0.9805, &
2947	0.9802, 0.9796, 0.9786, 0.9769, 0.9744, 0.9707, 0.9653, 0.9573, &
2948	0.9459, 0.9302, 0.9102, 0.8866, 0.8604, 0.8311, 0.7969, 0.7565, &
2949	0.7101, 0.6596, 0.9708, 0.9708, 0.9707, 0.9705, 0.9702, 0.9697, &
2950	0.9687, 0.9671, 0.9647, 0.9612, 0.9560, 0.9483, 0.9372, 0.9221, &
2951	0.9027, 0.8798, 0.8542, 0.8253, 0.7916, 0.7515, 0.7054, 0.6551, &
2952	0.9568, 0.9568, 0.9567, 0.9565, 0.9562, 0.9557, 0.9548, 0.9533, &
2953	0.9510, 0.9477, 0.9428, 0.9355, 0.9250, 0.9106, 0.8921, 0.8700, &
2954	0.8452, 0.8171, 0.7839, 0.7443, 0.6986, 0.6486/
2955
2956	data ((cah(i,j),i=1,22),j= 6,10)/ &
2957	0.9377, 0.9377, 0.9376, 0.9375, 0.9372, 0.9367, 0.9359, 0.9345, &
2958	0.9324, 0.9294, 0.9248, 0.9181, 0.9083, 0.8948, 0.8774, 0.8565, &
2959	0.8328, 0.8055, 0.7731, 0.7342, 0.6890, 0.6395, 0.9126, 0.9126, &
2960	0.9125, 0.9124, 0.9121, 0.9117, 0.9110, 0.9098, 0.9079, 0.9052, &
2961	0.9012, 0.8951, 0.8862, 0.8739, 0.8579, 0.8385, 0.8161, 0.7900, &
2962	0.7585, 0.7205, 0.6760, 0.6270, 0.8809, 0.8809, 0.8808, 0.8807, &
2963	0.8805, 0.8802, 0.8796, 0.8786, 0.8770, 0.8747, 0.8712, 0.8659, &
2964	0.8582, 0.8473, 0.8329, 0.8153, 0.7945, 0.7697, 0.7394, 0.7024, &
2965	0.6588, 0.6105, 0.8427, 0.8427, 0.8427, 0.8426, 0.8424, 0.8422, &
2966	0.8417, 0.8409, 0.8397, 0.8378, 0.8350, 0.8306, 0.8241, 0.8148, &
2967	0.8023, 0.7866, 0.7676, 0.7444, 0.7154, 0.6796, 0.6370, 0.5897, &
2968	0.7990, 0.7990, 0.7990, 0.7989, 0.7988, 0.7987, 0.7983, 0.7978, &
2969	0.7969, 0.7955, 0.7933, 0.7899, 0.7846, 0.7769, 0.7664, 0.7528, &
2970	0.7357, 0.7141, 0.6866, 0.6520, 0.6108, 0.5646/
2971
2972	data ((cah(i,j),i=1,22),j=11,15)/ &
2973	0.7515, 0.7515, 0.7515, 0.7515, 0.7514, 0.7513, 0.7511, 0.7507, &
2974	0.7501, 0.7491, 0.7476, 0.7450, 0.7409, 0.7347, 0.7261, 0.7144, &
2975	0.6992, 0.6793, 0.6533, 0.6203, 0.5805, 0.5357, 0.7020, 0.7020, &
2976	0.7020, 0.7019, 0.7019, 0.7018, 0.7017, 0.7015, 0.7011, 0.7005, &
2977	0.6993, 0.6974, 0.6943, 0.6894, 0.6823, 0.6723, 0.6588, 0.6406, &
2978	0.6161, 0.5847, 0.5466, 0.5034, 0.6518, 0.6518, 0.6518, 0.6518, &
2979	0.6518, 0.6517, 0.6517, 0.6515, 0.6513, 0.6508, 0.6500, 0.6485, &
2980	0.6459, 0.6419, 0.6359, 0.6273, 0.6151, 0.5983, 0.5755, 0.5458, &
2981	0.5095, 0.4681, 0.6017, 0.6017, 0.6017, 0.6017, 0.6016, 0.6016, &
2982	0.6016, 0.6015, 0.6013, 0.6009, 0.6002, 0.5989, 0.5967, 0.5932, &
2983	0.5879, 0.5801, 0.5691, 0.5535, 0.5322, 0.5043, 0.4700, 0.4308, &
2984	0.5518, 0.5518, 0.5518, 0.5518, 0.5518, 0.5518, 0.5517, 0.5516, &
2985	0.5514, 0.5511, 0.5505, 0.5493, 0.5473, 0.5441, 0.5393, 0.5322, &
2986	0.5220, 0.5076, 0.4878, 0.4617, 0.4297, 0.3929/
2987
2988	data ((cah(i,j),i=1,22),j=16,19)/ &
2989	0.5031, 0.5031, 0.5031, 0.5031, 0.5031, 0.5030, 0.5030, 0.5029, &
2990	0.5028, 0.5025, 0.5019, 0.5008, 0.4990, 0.4960, 0.4916, 0.4850, &
2991	0.4757, 0.4624, 0.4441, 0.4201, 0.3904, 0.3564, 0.4565, 0.4565, &
2992	0.4565, 0.4564, 0.4564, 0.4564, 0.4564, 0.4563, 0.4562, 0.4559, &
2993	0.4553, 0.4544, 0.4527, 0.4500, 0.4460, 0.4400, 0.4315, 0.4194, &
2994	0.4028, 0.3809, 0.3538, 0.3227, 0.4122, 0.4122, 0.4122, 0.4122, &
2995	0.4122, 0.4122, 0.4122, 0.4121, 0.4120, 0.4117, 0.4112, 0.4104, &
2996	0.4089, 0.4065, 0.4029, 0.3976, 0.3900, 0.3792, 0.3643, 0.3447, &
2997	0.3203, 0.2923, 0.3696, 0.3696, 0.3696, 0.3696, 0.3696, 0.3696, &
2998	0.3695, 0.3695, 0.3694, 0.3691, 0.3687, 0.3680, 0.3667, 0.3647, &
2999	0.3615, 0.3570, 0.3504, 0.3409, 0.3279, 0.3106, 0.2892, 0.2642/
3000
3001	!********************************************************************
3002	!-----table look-up for the reduction of clear-sky solar
3003	! radiation due to co2. The fraction 0.0343 is the
3004	! extraterrestrial solar flux in the co2 bands.
3005
3006	do k= 2, np+1
3007	do j= 1, n
3008	do i= 1, m
3009	xx=1./.3
3010	clog=log10(swc(i,j,k)*csm(i,j))
3011	wlog=log10(swh(i,j,k)*csm(i,j))
3012	ic=int( (clog+3.15)*xx+1.)
3013	iw=int( (wlog+4.15)*xx+1.)
3014	if(ic.lt.2)ic=2
3015	if(iw.lt.2)iw=2
3016	if(ic.gt.22)ic=22
3017	if(iw.gt.19)iw=19
3018	dc=clog-float(ic-2)*.3+3.
3019	dw=wlog-float(iw-2)*.3+4.
3020	x1=cah(1,iw-1)+(cah(1,iw)-cah(1,iw-1))xxdw
3021	x2=cah(ic-1,iw-1)+(cah(ic-1,iw)-cah(ic-1,iw-1))xxdw
3022	y2=x2+(cah(ic,iw-1)-cah(ic-1,iw-1))xxdc
3023	if (x1.lt.y2) x1=y2
3024	df(i,j,k)=df(i,j,k)+0.0343*(x1-y2)
3025	enddo
3026	enddo
3027	enddo
3028
3029	end subroutine flxco2
3030
3031	!*****************************************************************
3032
3033	subroutine o3prof (np, pres, ozone, its, ite, kts, kte, p, o3)
3034
3035	!*****************************************************************
3036	implicit none
3037	!*****************************************************************
3038	!
3039	integer iprof,m,np,its,ite,kts,kte
3040	integer i,k,ko,kk
3041	real pres(np),ozone(np)
3042	real p(its:ite,kts:kte),o3(its:ite,kts:kte)
3043
3044	! Statement function
3045
3046	real Linear, x1, y1, x2, y2, x
3047	Linear(x1, y1, x2, y2, x) = &
3048	(y1 * (x2 - x) + y2 * (x - x1)) / (x2 - x1)
3049	!
3050	do k = 1,np
3051	pres(k) = alog(pres(k))
3052	enddo
3053	do k = kts,kte
3054	do i = its, ite
3055	p(i,k) = alog(p(i,k))
3056	end do
3057	end do
3058
3059	! assume the pressure at model top is greater than pres(1)
3060	! if it is not, this part needs to change
3061
3062	do i = its, ite
3063	ko = 1
3064	do k = kts+1, kte
3065	do while (ko .lt. np .and. p(i,k) .gt. pres(ko))
3066	ko = ko + 1
3067	end do
3068	o3(i,k) = Linear (pres(ko), ozone(ko), &
3069	pres(ko-1), ozone(ko-1), &
3070	p(i,k))
3071	ko = ko - 1
3072	end do
3073	end do
3074
3075	! calculate top lay O3
3076
3077	do i = its, ite
3078	ko = 1
3079	k = kts
3080	do while (ko .le. np .and. p(i,k) .gt. pres(ko))
3081	ko = ko + 1
3082	end do
3083	IF (ko-1 .le. 1) then
3084	O3(i,k)=ozone(k)
3085	ELSE
3086	O3(i,k)=0.
3087	do kk=ko-2,1,-1
3088	O3(i,k)=O3(i,k)+ozone(kk)*(pres(kk+1)-pres(kk))
3089	enddo
3090	O3(i,k)=O3(i,k)/(pres(ko-1)-pres(1))
3091	ENDIF
3092	! print*,'O3=',i,k,ko,O3(i,k),p(i,k),ko,pres(ko),pres(ko-1)
3093	end do
3094
3095	end subroutine o3prof
3096
3097	!-----------------------------------------
3098	SUBROUTINE gsfc_swinit(cen_lat, allowed_to_read)
3099
3100	REAL, INTENT(IN ) :: cen_lat
3101	LOGICAL, INTENT(IN ) :: allowed_to_read
3102
3103	center_lat=cen_lat
3104
3105	END SUBROUTINE gsfc_swinit
3106
3107
3108	END MODULE module_ra_gsfcsw

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