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module_ra_gsfcsw.F @ 3553

Last change on this file since 3553 was 2759, checked in by aslmd, 2 years ago
adding unmodified code from WRFV3.0.1.1, expurged from useless data +1M size
File size: 110.3 KB

Line
1	!Comment the following out to turn off aerosol-radiation
2	!feedback between MOSAIC and GSFCSW. wig, 21-Feb-2005
3
4	MODULE module_ra_gsfcsw
5
6	REAL, PARAMETER, PRIVATE :: thresh=1.e-9
7	REAL, SAVE :: center_lat
8
9	! Assign co2 and trace gases amount (units are parts/part by volumn)
10
11	REAL, PARAMETER, PRIVATE :: co2 = 300.e-6
12
13	CONTAINS
14
15	!------------------------------------------------------------------
16	! urban related variable are added to arguments of gsfcswrad
17	!------------------------------------------------------------------
18	SUBROUTINE GSFCSWRAD(rthraten,gsw,xlat,xlong &
19	,dz8w,rho_phy &
20	,alb,t3d,qv3d,qc3d,qr3d &
21	,qi3d,qs3d,qg3d,qndrop3d &
22	,p3d,p8w3d,pi3d,cldfra3d,rswtoa &
23	,gmt,cp,g,julday,xtime,declin,solcon &
24	,radfrq,degrad,taucldi,taucldc,warm_rain &
25	,tauaer300,tauaer400,tauaer600,tauaer999 & ! jcb
26	,gaer300,gaer400,gaer600,gaer999 & ! jcb
27	,waer300,waer400,waer600,waer999 & ! jcb
28	,aer_ra_feedback &
29	,f_qv,f_qc,f_qr,f_qi,f_qs,f_qg,f_qndrop &
30	,ids,ide, jds,jde, kds,kde &
31	,ims,ime, jms,jme, kms,kme &
32	,its,ite, jts,jte, kts,kte &
33	,cosz_urb2d,omg_urb2d ) !Optional urban
34	!------------------------------------------------------------------
35	IMPLICIT NONE
36	!------------------------------------------------------------------
37	INTEGER, PARAMETER :: np = 75
38
39	INTEGER, INTENT(IN ) :: ids,ide, jds,jde, kds,kde, &
40	ims,ime, jms,jme, kms,kme, &
41	its,ite, jts,jte, kts,kte
42	LOGICAL, INTENT(IN ) :: warm_rain
43
44	INTEGER, INTENT(IN ) :: JULDAY
45
46
47	REAL, INTENT(IN ) :: RADFRQ,DEGRAD, &
48	XTIME,DECLIN,SOLCON
49	!
50	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), &
51	INTENT(IN ) :: P3D, &
52	P8W3D, &
53	pi3D, &
54	T3D, &
55	dz8w, &
56	rho_phy, &
57	CLDFRA3D
58
59
60	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), &
61	INTENT(INOUT) :: RTHRATEN
62	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), &
63	OPTIONAL, &
64	INTENT(INOUT) :: taucldi, &
65	taucldc
66	!
67	REAL, DIMENSION( ims:ime, jms:jme ), &
68	INTENT(IN ) :: XLAT, &
69	XLONG, &
70	ALB
71	!
72	REAL, DIMENSION( ims:ime, jms:jme ), &
73	INTENT(INOUT) :: GSW, &
74	RSWTOA
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	INTEGER, INTENT(IN ), OPTIONAL :: aer_ra_feedback
88
89	REAL, DIMENSION( ims:ime, kms:kme, jms:jme ), &
90	OPTIONAL, &
91	INTENT(IN ) :: &
92	QV3D, &
93	QC3D, &
94	QR3D, &
95	QI3D, &
96	QS3D, &
97	QG3D, &
98	QNDROP3D
99
100	LOGICAL, OPTIONAL, INTENT(IN ) :: &
101	F_QV,F_QC,F_QR,F_QI,F_QS,F_QG, &
102	F_QNDROP
103
104	! LOCAL VARS
105
106	REAL, DIMENSION( its:ite ) :: &
107	ts, &
108	cosz, &
109	fp, &
110	rsuvbm, &
111	rsuvdf, &
112	rsirbm, &
113	rsirdf, &
114	p400, &
115	p700
116
117	INTEGER, DIMENSION( its:ite ) :: &
118	ict, &
119	icb
120
121	REAL, DIMENSION( its:ite, kts-1:kte, 2 ) :: taucld
122
123	REAL, DIMENSION( its:ite, kts-1:kte+1 ) :: flx, &
124	flxd
125	!
126	REAL, DIMENSION( its:ite, kts-1:kte ) :: O3
127	!
128	REAL, DIMENSION( its:ite, kts-1:kte, 11 ) :: &
129	taual, &
130	ssaal, &
131	asyal
132
133	REAL, DIMENSION( its:ite, kts-1:kte, 2 ) :: &
134	reff, &
135	cwc
136	REAL, DIMENSION( its: ite, kts-1:kte+1 ) :: &
137	P8W2D
138	REAL, DIMENSION( its: ite, kts-1:kte ) :: &
139	TTEN2D, &
140	qndrop2d, &
141	SH2D, &
142	P2D, &
143	T2D, &
144	fcld2D
145	real, DIMENSION( its:ite , kts:kte+1 ) :: phyd
146	real, DIMENSION( its:ite , kts:kte ) :: phydmid
147
148	REAL, DIMENSION( np, 5 ) :: pres, &
149	ozone
150	REAL, DIMENSION( np ) :: p
151
152	LOGICAL :: cldwater,overcast, predicate
153	!
154	INTEGER :: i,j,K,NK,ib,kk,mix,mkx
155
156	! iprof = 1 : mid-latitude summer profile
157	! = 2 : mid-latitude winter profile
158	! = 3 : sub-arctic summer profile
159	! = 4 : sub-arctic winter profile
160	! = 5 : tropical profile
161	!
162
163	INTEGER :: iprof, &
164	is_summer, &
165	ie_summer, &
166	lattmp
167
168
169	!
170	REAL :: XLAT0,XLONG0
171	REAL :: fac,latrmp
172	REAL :: xt24,tloctm,hrang,xxlat
173
174	!URBAN
175	REAL, OPTIONAL, DIMENSION( ims:ime, jms:jme ), INTENT(OUT) :: COSZ_URB2D !urban
176	REAL, OPTIONAL, DIMENSION( ims:ime, jms:jme ), INTENT(OUT) :: OMG_URB2D !urban
177
178	real, dimension(11) :: midbands ! jcb
179	data midbands/.2,.235,.27,.2875,.3025,.305,.3625,.55,1.92,1.745,6.135/ ! jcb
180	real :: ang,slope ! jcb
181	character(len=200) :: msg !wig
182	real pi, third, relconst, lwpmin, rhoh2o
183	!
184	!--------------------------------------------------------------------------------
185	! data set 1
186	! mid-latitude summer (75 levels) : p(mb) o3(g/g)
187	! surface temp = 294.0
188	!
189	data (pres(i,1),i=1,np)/ &
190	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
191	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
192	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
193	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
194	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
195	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
196	31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, &
197	157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, &
198	299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, &
199	442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, &
200	585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, &
201	727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, &
202	870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, &
203	1013.0000/
204	!
205	data (ozone(i,1),i=1,np)/ &
206	0.1793E-06, 0.2228E-06, 0.2665E-06, 0.3104E-06, 0.3545E-06, &
207	0.3989E-06, 0.4435E-06, 0.4883E-06, 0.5333E-06, 0.5786E-06, &
208	0.6241E-06, 0.6698E-06, 0.7157E-06, 0.7622E-06, 0.8557E-06, &
209	0.1150E-05, 0.1462E-05, 0.1793E-05, 0.2143E-05, 0.2512E-05, &
210	0.2902E-05, 0.3313E-05, 0.4016E-05, 0.5193E-05, 0.6698E-05, &
211	0.8483E-05, 0.9378E-05, 0.9792E-05, 0.1002E-04, 0.1014E-04, &
212	0.9312E-05, 0.7834E-05, 0.6448E-05, 0.5159E-05, 0.3390E-05, &
213	0.1937E-05, 0.1205E-05, 0.8778E-06, 0.6935E-06, 0.5112E-06, &
214	0.3877E-06, 0.3262E-06, 0.2770E-06, 0.2266E-06, 0.2020E-06, &
215	0.1845E-06, 0.1679E-06, 0.1519E-06, 0.1415E-06, 0.1317E-06, &
216	0.1225E-06, 0.1137E-06, 0.1055E-06, 0.1001E-06, 0.9487E-07, &
217	0.9016E-07, 0.8641E-07, 0.8276E-07, 0.7930E-07, 0.7635E-07, &
218	0.7347E-07, 0.7065E-07, 0.6821E-07, 0.6593E-07, 0.6368E-07, &
219	0.6148E-07, 0.5998E-07, 0.5859E-07, 0.5720E-07, 0.5582E-07, &
220	0.5457E-07, 0.5339E-07, 0.5224E-07, 0.5110E-07, 0.4999E-07/
221
222	!--------------------------------------------------------------------------------
223	! data set 2
224	! mid-latitude winter (75 levels) : p(mb) o3(g/g)
225	! surface temp = 272.2
226	!
227	data (pres(i,2),i=1,np)/ &
228	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
229	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
230	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
231	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
232	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
233	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
234	31.5105, 44.2001, 62.0000, 85.9000, 109.8000, 133.7000, &
235	157.6000, 181.5000, 205.4000, 229.3000, 253.2000, 277.1000, &
236	301.0000, 324.9000, 348.8000, 372.7000, 396.6000, 420.5000, &
237	444.4000, 468.3000, 492.2000, 516.1000, 540.0000, 563.9000, &
238	587.8000, 611.7000, 635.6000, 659.5000, 683.4000, 707.3000, &
239	731.2000, 755.1000, 779.0000, 802.9000, 826.8000, 850.7000, &
240	874.6000, 898.5000, 922.4000, 946.3000, 970.2000, 994.1000, &
241	1018.0000/
242	!
243	data (ozone(i,2),i=1,np)/ &
244	0.2353E-06, 0.3054E-06, 0.3771E-06, 0.4498E-06, 0.5236E-06, &
245	0.5984E-06, 0.6742E-06, 0.7511E-06, 0.8290E-06, 0.9080E-06, &
246	0.9881E-06, 0.1069E-05, 0.1152E-05, 0.1319E-05, 0.1725E-05, &
247	0.2145E-05, 0.2581E-05, 0.3031E-05, 0.3497E-05, 0.3980E-05, &
248	0.4478E-05, 0.5300E-05, 0.6725E-05, 0.8415E-05, 0.1035E-04, &
249	0.1141E-04, 0.1155E-04, 0.1143E-04, 0.1093E-04, 0.1060E-04, &
250	0.9720E-05, 0.8849E-05, 0.7424E-05, 0.6023E-05, 0.4310E-05, &
251	0.2820E-05, 0.1990E-05, 0.1518E-05, 0.1206E-05, 0.9370E-06, &
252	0.7177E-06, 0.5450E-06, 0.4131E-06, 0.3277E-06, 0.2563E-06, &
253	0.2120E-06, 0.1711E-06, 0.1524E-06, 0.1344E-06, 0.1199E-06, &
254	0.1066E-06, 0.9516E-07, 0.8858E-07, 0.8219E-07, 0.7598E-07, &
255	0.6992E-07, 0.6403E-07, 0.5887E-07, 0.5712E-07, 0.5540E-07, &
256	0.5370E-07, 0.5214E-07, 0.5069E-07, 0.4926E-07, 0.4785E-07, &
257	0.4713E-07, 0.4694E-07, 0.4676E-07, 0.4658E-07, 0.4641E-07, &
258	0.4634E-07, 0.4627E-07, 0.4619E-07, 0.4612E-07, 0.4605E-07/
259
260
261	!--------------------------------------------------------------------------------
262	! data set 3
263	! sub-arctic summer (75 levels) : p(mb) o3(g/g)
264	! surface temp = 287.0
265	!
266	data (pres(i,3),i=1,np)/ &
267	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
268	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
269	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
270	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
271	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
272	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
273	31.5105, 44.2001, 62.0000, 85.7000, 109.4000, 133.1000, &
274	156.8000, 180.5000, 204.2000, 227.9000, 251.6000, 275.3000, &
275	299.0000, 322.7000, 346.4000, 370.1000, 393.8000, 417.5000, &
276	441.2000, 464.9000, 488.6000, 512.3000, 536.0000, 559.7000, &
277	583.4000, 607.1000, 630.8000, 654.5000, 678.2000, 701.9000, &
278	725.6000, 749.3000, 773.0000, 796.7000, 820.4000, 844.1000, &
279	867.8000, 891.5000, 915.2000, 938.9000, 962.6000, 986.3000, &
280	1010.0000/
281	!
282	data (ozone(i,3),i=1,np)/ &
283	0.1728E-06, 0.2131E-06, 0.2537E-06, 0.2944E-06, 0.3353E-06, &
284	0.3764E-06, 0.4176E-06, 0.4590E-06, 0.5006E-06, 0.5423E-06, &
285	0.5842E-06, 0.6263E-06, 0.6685E-06, 0.7112E-06, 0.7631E-06, &
286	0.1040E-05, 0.1340E-05, 0.1660E-05, 0.2001E-05, 0.2362E-05, &
287	0.2746E-05, 0.3153E-05, 0.3762E-05, 0.4988E-05, 0.6518E-05, &
288	0.8352E-05, 0.9328E-05, 0.9731E-05, 0.8985E-05, 0.7632E-05, &
289	0.6814E-05, 0.6384E-05, 0.5718E-05, 0.4728E-05, 0.4136E-05, &
290	0.3033E-05, 0.2000E-05, 0.1486E-05, 0.1121E-05, 0.8680E-06, &
291	0.6474E-06, 0.5164E-06, 0.3921E-06, 0.2996E-06, 0.2562E-06, &
292	0.2139E-06, 0.1723E-06, 0.1460E-06, 0.1360E-06, 0.1267E-06, &
293	0.1189E-06, 0.1114E-06, 0.1040E-06, 0.9678E-07, 0.8969E-07, &
294	0.8468E-07, 0.8025E-07, 0.7590E-07, 0.7250E-07, 0.6969E-07, &
295	0.6694E-07, 0.6429E-07, 0.6208E-07, 0.5991E-07, 0.5778E-07, &
296	0.5575E-07, 0.5403E-07, 0.5233E-07, 0.5067E-07, 0.4904E-07, &
297	0.4721E-07, 0.4535E-07, 0.4353E-07, 0.4173E-07, 0.3997E-07/
298
299
300	!--------------------------------------------------------------------------------
301	! data set 3
302	! sub-arctic winter (75 levels) : p(mb) o3(g/g)
303	! surface temp = 257.1
304	!
305	data (pres(i,4),i=1,np)/ &
306	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
307	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
308	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
309	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
310	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
311	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
312	31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, &
313	157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, &
314	299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, &
315	442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, &
316	585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, &
317	727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, &
318	870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, &
319	1013.0000/
320	!
321	data (ozone(i,4),i=1,np)/ &
322	0.2683E-06, 0.3562E-06, 0.4464E-06, 0.5387E-06, 0.6333E-06, &
323	0.7301E-06, 0.8291E-06, 0.9306E-06, 0.1034E-05, 0.1140E-05, &
324	0.1249E-05, 0.1360E-05, 0.1474E-05, 0.1855E-05, 0.2357E-05, &
325	0.2866E-05, 0.3383E-05, 0.3906E-05, 0.4437E-05, 0.4975E-05, &
326	0.5513E-05, 0.6815E-05, 0.8157E-05, 0.1008E-04, 0.1200E-04, &
327	0.1242E-04, 0.1250E-04, 0.1157E-04, 0.1010E-04, 0.9063E-05, &
328	0.8836E-05, 0.8632E-05, 0.8391E-05, 0.7224E-05, 0.6054E-05, &
329	0.4503E-05, 0.3204E-05, 0.2278E-05, 0.1833E-05, 0.1433E-05, &
330	0.9996E-06, 0.7440E-06, 0.5471E-06, 0.3944E-06, 0.2852E-06, &
331	0.1977E-06, 0.1559E-06, 0.1333E-06, 0.1126E-06, 0.9441E-07, &
332	0.7678E-07, 0.7054E-07, 0.6684E-07, 0.6323E-07, 0.6028E-07, &
333	0.5746E-07, 0.5468E-07, 0.5227E-07, 0.5006E-07, 0.4789E-07, &
334	0.4576E-07, 0.4402E-07, 0.4230E-07, 0.4062E-07, 0.3897E-07, &
335	0.3793E-07, 0.3697E-07, 0.3602E-07, 0.3506E-07, 0.3413E-07, &
336	0.3326E-07, 0.3239E-07, 0.3153E-07, 0.3069E-07, 0.2987E-07/
337
338	!--------------------------------------------------------------------------------
339	! data set 4
340	! tropical (75 levels) : p(mb) o3(g/g)
341	! surface temp = 300.0
342	!
343	data (pres(i,5),i=1,np)/ &
344	0.0006244, 0.0008759, 0.0012286, 0.0017234, 0.0024174, &
345	0.0033909, 0.0047565, 0.0066720, 0.0093589, 0.0131278, &
346	0.0184145, 0.0258302, 0.0362323, 0.0508234, 0.0712906, &
347	0.1000000, 0.1402710, 0.1967600, 0.2759970, 0.3871430, &
348	0.5430, 0.7617, 1.0685, 1.4988, 2.1024, 2.9490, &
349	4.1366, 5.8025, 8.1392, 11.4170, 16.0147, 22.4640, &
350	31.5105, 44.2001, 62.0000, 85.7750, 109.5500, 133.3250, &
351	157.1000, 180.8750, 204.6500, 228.4250, 252.2000, 275.9750, &
352	299.7500, 323.5250, 347.3000, 371.0750, 394.8500, 418.6250, &
353	442.4000, 466.1750, 489.9500, 513.7250, 537.5000, 561.2750, &
354	585.0500, 608.8250, 632.6000, 656.3750, 680.1500, 703.9250, &
355	727.7000, 751.4750, 775.2500, 799.0250, 822.8000, 846.5750, &
356	870.3500, 894.1250, 917.9000, 941.6750, 965.4500, 989.2250, &
357	1013.0000/
358	!
359	data (ozone(i,5),i=1,np)/ &
360	0.1993E-06, 0.2521E-06, 0.3051E-06, 0.3585E-06, 0.4121E-06, &
361	0.4661E-06, 0.5203E-06, 0.5748E-06, 0.6296E-06, 0.6847E-06, &
362	0.7402E-06, 0.7959E-06, 0.8519E-06, 0.9096E-06, 0.1125E-05, &
363	0.1450E-05, 0.1794E-05, 0.2156E-05, 0.2538E-05, 0.2939E-05, &
364	0.3362E-05, 0.3785E-05, 0.4753E-05, 0.6005E-05, 0.7804E-05, &
365	0.9635E-05, 0.1023E-04, 0.1067E-04, 0.1177E-04, 0.1290E-04, &
366	0.1134E-04, 0.9223E-05, 0.6667E-05, 0.3644E-05, 0.1545E-05, &
367	0.5355E-06, 0.2523E-06, 0.2062E-06, 0.1734E-06, 0.1548E-06, &
368	0.1360E-06, 0.1204E-06, 0.1074E-06, 0.9707E-07, 0.8960E-07, &
369	0.8419E-07, 0.7962E-07, 0.7542E-07, 0.7290E-07, 0.7109E-07, &
370	0.6940E-07, 0.6786E-07, 0.6635E-07, 0.6500E-07, 0.6370E-07, &
371	0.6244E-07, 0.6132E-07, 0.6022E-07, 0.5914E-07, 0.5884E-07, &
372	0.5855E-07, 0.5823E-07, 0.5772E-07, 0.5703E-07, 0.5635E-07, &
373	0.5570E-07, 0.5492E-07, 0.5412E-07, 0.5335E-07, 0.5260E-07, &
374	0.5167E-07, 0.5063E-07, 0.4961E-07, 0.4860E-07, 0.4761E-07/
375
376	!--------------------------------------------------------------------------------
377
378	#ifdef WRF_CHEM
379	IF ( aer_ra_feedback == 1) then
380	IF ( .NOT. &
381	( PRESENT(tauaer300) .AND. &
382	PRESENT(tauaer400) .AND. &
383	PRESENT(tauaer600) .AND. &
384	PRESENT(tauaer999) .AND. &
385	PRESENT(gaer300) .AND. &
386	PRESENT(gaer400) .AND. &
387	PRESENT(gaer600) .AND. &
388	PRESENT(gaer999) .AND. &
389	PRESENT(waer300) .AND. &
390	PRESENT(waer400) .AND. &
391	PRESENT(waer600) .AND. &
392	PRESENT(waer999) ) ) THEN
393	CALL wrf_error_fatal ( 'Warning: missing fields required for aerosol radiation' )
394	ENDIF
395	ENDIF
396	#endif
397	cldwater = .true.
398	overcast = .false.
399
400	mix=ite-its+1
401	mkx=kte-kts+1
402
403	is_summer=80
404	ie_summer=265
405
406	! testing, need to change iprof, which is function of lat and julian day
407	! iprof = 1 : mid-latitude summer profile
408	! = 2 : mid-latitude winter profile
409	! = 3 : sub-arctic summer profile
410	! = 4 : sub-arctic winter profile
411	! = 5 : tropical profile
412
413	IF (abs(center_lat) .le. 30. ) THEN ! tropic
414	iprof = 5
415	ELSE
416	IF (center_lat .gt. 0.) THEN
417	IF (center_lat .gt. 60. ) THEN ! arctic
418	IF (JULDAY .gt. is_summer .and. JULDAY .lt. ie_summer ) THEN
419	! arctic summer
420	iprof = 3
421	ELSE
422	! arctic winter
423	iprof = 4
424	ENDIF
425	ELSE ! midlatitude
426	IF (JULDAY .gt. is_summer .and. JULDAY .lt. ie_summer ) THEN
427	! north midlatitude summer
428	iprof = 1
429	ELSE
430	! north midlatitude winter
431	iprof = 2
432	ENDIF
433	ENDIF
434
435	ELSE
436	IF (center_lat .lt. -60. ) THEN ! antarctic
437	IF (JULDAY .lt. is_summer .or. JULDAY .gt. ie_summer ) THEN
438	! antarctic summer
439	iprof = 3
440	ELSE
441	! antarctic winter
442	iprof = 4
443	ENDIF
444	ELSE ! midlatitude
445	IF (JULDAY .lt. is_summer .or. JULDAY .gt. ie_summer ) THEN
446	! south midlatitude summer
447	iprof = 1
448	ELSE
449	! south midlatitude winter
450	iprof = 2
451	ENDIF
452	ENDIF
453
454	ENDIF
455	ENDIF
456
457
458	j_loop: DO J=jts,jte
459
460	DO K=kts,kte
461	DO I=its,ite
462	cwc(i,k,1) = 0.
463	cwc(i,k,2) = 0.
464	ENDDO
465	ENDDO
466
467	DO K=1,np
468	p(k)=pres(k,iprof)
469	ENDDO
470
471	do k = kts,kte+1
472	do i = its,ite
473	if(k.eq.kts)then
474	phyd(i,k)=p8w3d(i,kts,j)
475	else
476	phyd(i,k)=phyd(i,k-1) - grho_phy(i,k-1,j)dz8w(i,k-1,j)
477	phydmid(i,k-1)=0.5*(phyd(i,k-1)+phyd(i,k))
478	endif
479	enddo
480	enddo
481	! normalize full pressure range
482	do k = kts+1,kte+1
483	do i = its,ite
484	if(k.eq.kts+1)fp(i) = (p8w3d(i,kts,j)-p8w3d(i,kte+1,j))/(phyd(i,kts)-phyd(i,kte+1))
485	phyd(i,k)=phyd(i,k-1) - grho_phy(i,k-1,j)dz8w(i,k-1,j)*fp(i)
486	phydmid(i,k-1)=0.5*(phyd(i,k-1)+phyd(i,k))
487	enddo
488	enddo
489
490	! reverse vars
491	!
492	DO K=kts,kte+1
493	DO I=its,ite
494	NK=kme-K+kms
495	P8W2D(I,K)=phyd(I,NK)*0.01 ! P8w2D is in mb
496	ENDDO
497	ENDDO
498
499	DO I=its,ite
500	P8W2D(I,0)=.0
501	ENDDO
502	!
503	DO K=kts,kte
504	DO I=its,ite
505	NK=kme-1-K+kms
506	TTEN2D(I,K)=0.
507	T2D(I,K)=T3D(I,NK,J)
508
509	! SH2D specific humidity
510	SH2D(I,K)=QV3D(I,NK,J)/(1.+QV3D(I,NK,J))
511	SH2D(I,K)=max(0.,SH2D(I,K))
512	cwc(I,K,2)=QC3D(I,NK,J)
513	cwc(I,K,2)=max(0.,cwc(I,K,2))
514
515	P2D(I,K)=phydmid(I,NK)*0.01 ! P2D is in mb
516	fcld2D(I,K)=CLDFRA3D(I,NK,J)
517	ENDDO
518	ENDDO
519
520	! This logic is tortured because cannot test F_QI unless
521	! it is present, and order of evaluation of expressions
522	! is not specified in Fortran
523
524	IF ( PRESENT ( F_QI ) ) THEN
525	predicate = F_QI
526	ELSE
527	predicate = .FALSE.
528	ENDIF
529
530	IF (.NOT. warm_rain .AND. .NOT. predicate ) THEN
531	DO K=kts,kte
532	DO I=its,ite
533	IF (T2D(I,K) .lt. 273.15) THEN
534	cwc(I,K,1)=cwc(I,K,2)
535	cwc(I,K,2)=0.
536	ENDIF
537	ENDDO
538	ENDDO
539	ENDIF
540
541	IF ( PRESENT( F_QNDROP ) ) THEN
542	IF ( F_QNDROP ) THEN
543	DO K=kts,kte
544	DO I=its,ite
545	NK=kme-1-K+kms
546	qndrop2d(I,K)=qndrop3d(I,NK,j)
547	ENDDO
548	ENDDO
549	qndrop2d(:,kts-1)=0.
550	END IF
551	END IF
552
553	DO I=its,ite
554	TTEN2D(I,0)=0.
555	T2D(I,0)=T2D(I,1)
556	! SH2D specific humidity
557	SH2D(I,0)=0.5*SH2D(i,1)
558	cwc(I,0,2)=0.
559	cwc(I,0,1)=0.
560	P2D(I,0)=0.5*(P8W2D(I,0)+P8W2D(I,1))
561	fcld2D(I,0)=0.
562	ENDDO
563	!
564	IF ( PRESENT( F_QI ) .AND. PRESENT( qi3d) ) THEN
565	IF ( (F_QI) ) THEN
566	DO K=kts,kte
567	DO I=its,ite
568	NK=kme-1-K+kms
569	cwc(I,K,1)=QI3D(I,NK,J)
570	cwc(I,K,1)=max(0.,cwc(I,K,1))
571	ENDDO
572	ENDDO
573	ENDIF
574	ENDIF
575	!
576	! ... Vertical profiles for ozone
577	!
578	call o3prof (np, p, ozone(1,iprof), its, ite, kts-1, kte, P2D, O3)
579
580	! ... Vertical profiles for effective particle size
581	!
582	pi = 4.*atan(1.0)
583	third=1./3.
584	rhoh2o=1.e3
585	relconst=3/(4.pirhoh2o)
586	! minimun liquid water path to calculate rel
587	! corresponds to optical depth of 1.e-3 for radius 4 microns.
588	lwpmin=3.e-5
589	do k = kts-1, kte
590	do i = its, ite
591	reff(i,k,2) = 10.
592	if( PRESENT( F_QNDROP ) ) then
593	if( F_QNDROP ) then
594	if ( cwc(i,k,2)*(P8W2D(I,K+1)-P8W2D(I,K)).gt.lwpmin.and. &
595	qndrop2d(i,k).gt.1000. ) then
596	reff(i,k,2)=(relconstcwc(i,k,2)/qndrop2d(i,k))*third ! effective radius in m
597	! apply scaling from Martin et al., JAS 51, 1830.
598	reff(i,k,2)=1.1*reff(i,k,2)
599	reff(i,k,2)=reff(i,k,2)*1.e6 ! convert from m to microns
600	reff(i,k,2)=max(reff(i,k,2),4.)
601	reff(i,k,2)=min(reff(i,k,2),20.)
602	end if
603	end if
604	end if
605	reff(i,k,1) = 80.
606	end do
607	end do
608	!
609	! ... Level indices separating high, middle and low clouds
610	!
611	do i = its, ite
612	p400(i) = 1.e5
613	p700(i) = 1.e5
614	enddo
615
616	do k = kts-1,kte+1
617	do i = its, ite
618	if (abs(P8W2D(i,k) - 400.) .lt. p400(i)) then
619	p400(i) = abs(P8W2D(i,k) - 400.)
620	ict(i) = k
621	endif
622	if (abs(P8W2D(i,k) - 700.) .lt. p700(i)) then
623	p700(i) = abs(P8W2D(i,k) - 700.)
624	icb(i) = k
625	endif
626	end do
627	end do
628
629	!wig beg
630	! ... Aerosol effects. Added aerosol feedbacks with MOSAIC, Dec. 2005.
631	!
632	do ib = 1, 11
633	do k = kts-1,kte
634	do i = its,ite
635	taual(i,k,ib) = 0.
636	ssaal(i,k,ib) = 0.
637	asyal(i,k,ib) = 0.
638	end do
639	end do
640	end do
641
642	#ifdef WRF_CHEM
643	IF ( AER_RA_FEEDBACK == 1) then
644	!wig end
645	do ib = 1, 11
646	do k = kts-1,kte-1 !wig
647	do i = its,ite
648
649	! taual(i,kte-k,ib) = 0.
650	! ssaal(i,kte-k,ib) = 0.
651	! asyal(i,kte-k,ib) = 0.
652
653	!jcb beg
654	! convert optical properties at 300,400,600, and 999 to conform to the band wavelengths
655	! these are: 200,235,270,287.5,302.5,305,362.5,550,1920,1745,6135; why the emphasis on the UV?
656	! taual - use angstrom exponent
657	if(tauaer300(i,k+1,j).gt.thresh .and. tauaer999(i,k+1,j).gt.thresh) then
658	ang=log(tauaer300(i,k+1,j)/tauaer999(i,k+1,j))/log(999./300.)
659	! write(6,*)i,k,ang,tauaer300(i,k+1,j),tauaer999(i,k+1,j)
660	taual(i,kte-k,ib)=tauaer400(i,k+1,j)(0.4/midbands(ib))*ang ! notice reserved variable
661	! write(6,10001)i,k,ang,tauaer300(i,k+1,j),tauaer999(i,k+1,j),midbands(ib),taual(i,k,ib)
662	!10001 format(i3,i3,5f12.6)
663
664	! ssa - linear interpolation; extrapolation
665	slope=(waer600(i,k+1,j)-waer400(i,k+1,j))/.2
666	ssaal(i,kte-k,ib) = slope*(midbands(ib)-.6)+waer600(i,k+1,j) ! notice reversed variables
667	if(ssaal(i,kte-k,ib).lt.0.4) ssaal(i,kte-k,ib)=0.4
668	if(ssaal(i,kte-k,ib).ge.1.0) ssaal(i,kte-k,ib)=1.0
669
670	! g - linear interpolation;extrapolation
671	slope=(gaer600(i,k+1,j)-gaer400(i,k+1,j))/.2
672	asyal(i,kte-k,ib) = slope*(midbands(ib)-.6)+gaer600(i,k+1,j) ! notice reversed varaibles
673	if(asyal(i,kte-k,ib).lt.0.5) asyal(i,kte-k,ib)=0.5
674	if(asyal(i,kte-k,ib).ge.1.0) asyal(i,kte-k,ib)=1.0
675	endif
676	!jcb end
677	end do
678	end do
679	end do
680
681	!wig beg
682	do ib = 1, 11
683	do i = its,ite
684	slope = 0. !use slope as a sum holder
685	do k = kts-1,kte
686	slope = slope + taual(i,k,ib)
687	end do
688	if( slope < 0. ) then
689	write(msg,'("ERROR: Negative total optical depth of ",f8.2," at point i,j,ib=",3i5)') slope,i,j,ib
690	call wrf_error_fatal(msg)
691	else if( slope > 5. ) then
692	call wrf_message("-------------------------")
693	write(msg,'("WARNING: Large total optical depth of ",f8.2," at point i,j,ib=",3i5)') slope,i,j,ib
694	call wrf_message(msg)
695
696	call wrf_message("Diagnostics 1: k, tauaer300, tauaer400, tauaer600, tauaer999")
697	do k=kts,kte
698	write(msg,'(i4,4f8.2)') k, tauaer300(i,k,j), tauaer400(i,k,j), &
699	tauaer600(i,k,j), tauaer999(i,k,j)
700	call wrf_message(msg)
701	end do
702
703	call wrf_message("Diagnostics 2: k, gaer300, gaer400, gaer600, gaer999")
704	do k=kts,kte
705	write(msg,'(i4,4f8.2)') k, gaer300(i,k,j), gaer400(i,k,j), &
706	gaer600(i,k,j), gaer999(i,k,j)
707	call wrf_message(msg)
708	end do
709
710	call wrf_message("Diagnostics 3: k, waer300, waer400, waer600, waer999")
711	do k=kts,kte
712	write(msg,'(i4,4f8.2)') k, waer300(i,k,j), waer400(i,k,j), &
713	waer600(i,k,j), waer999(i,k,j)
714	call wrf_message(msg)
715	end do
716
717	call wrf_message("Diagnostics 4: k, ssaal, asyal, taual")
718	do k=kts-1,kte
719	write(msg,'(i4,3f8.2)') k, ssaal(i,k,ib), asyal(i,k,ib), taual(i,k,ib)
720	call wrf_message(msg)
721	end do
722	call wrf_message("-------------------------")
723	end if
724	end do
725	end do
726	!wig end
727	endif
728	#endif
729	!
730	! ... Initialize output arrays
731	!
732	do ib = 1, 2
733	do k = kts-1, kte
734	do i = its, ite
735	taucld(i,k,ib) = 0.
736	end do
737	end do
738	end do
739	!
740	do k = kts-1,kte+1
741	do i = its,ite
742	flx(i,k) = 0.
743	flxd(i,k) = 0.
744	end do
745	end do
746	!
747	! ... Solar zenith angle
748	!
749	do i = its,ite
750	xt24 = mod(xtime + radfrq * 0.5, 1440.)
751	tloctm = GMT + xt24 / 60. + XLONG(i,j) / 15.
752	hrang = 15. * (tloctm - 12.) * degrad
753	xxlat = XLAT(i,j) * degrad
754	cosz(i) = sin(xxlat) * sin(declin) + &
755	cos(xxlat) * cos(declin) * cos(hrang)
756	!urban
757	if(present(COSZ_URB2D)) COSZ_URB2D(i,j)=cosz(i) !urban
758	if(present(OMG_URB2D)) OMG_URB2D(i,j)=hrang !urban
759	rsuvbm(i) = ALB(i,j)
760	rsuvdf(i) = ALB(i,j)
761	rsirbm(i) = ALB(i,j)
762	rsirdf(i) = ALB(i,j)
763	end do
764
765	call sorad (mix,1,1,mkx+1,p8w2D,t2D,sh2D,o3, &
766	overcast,cldwater,cwc,taucld,reff,fcld2D,ict,icb,&
767	taual,ssaal,asyal, &
768	cosz,rsuvbm,rsuvdf,rsirbm,rsirdf, &
769	flx,flxd)
770	!
771	! ... Convert the units of flx and flc from fraction to w/m^2
772	!
773	do k = kts, kte
774	do i = its, ite
775	nk=kme-1-k+kms
776	if(present(taucldc)) taucldc(i,nk,j)=taucld(i,k,2)
777	if(present(taucldi)) taucldi(i,nk,j)=taucld(i,k,1)
778	enddo
779	enddo
780
781	do k = kts, kte+1
782	do i = its, ite
783	if (cosz(i) .lt. thresh) then
784	flx(i,k) = 0.
785	else
786	flx(i,k) = flx(i,k) * SOLCON * cosz(i)
787	endif
788	end do
789	end do
790	!
791	! ... Calculate heating rate (deg/sec)
792	!
793	fac = .01 * g / Cp
794	do k = kts, kte
795	do i = its, ite
796	if (cosz(i) .gt. thresh) then
797	TTEN2D(i,k) = - fac * (flx(i,k) - flx(i,k+1))/ &
798	(p8w2d(i,k)-p8w2d(i,k+1))
799	endif
800	end do
801	end do
802
803	! upward top of atmosphere
804	do i = its, ite
805	if (cosz(i) .le. thresh) then
806	RSWTOA(i,j) = 0.
807	else
808	RSWTOA(i,j) = flx(i,kts) - flxd(i,kts) * SOLCON * cosz(i)
809	! print *,'cosz,rswtoa=',cosz(i),rswtoa(i,j)
810	endif
811	end do
812	!
813	! ... Absorbed part in surface energy budget
814	!
815	do i = its, ite
816	if (cosz(i) .le. thresh) then
817	GSW(i,j) = 0.
818	else
819	GSW(i,j) = (1. - rsuvbm(i)) * flxd(i,kte+1) * SOLCON * cosz(i)
820	endif
821	end do
822
823	DO K=kts,kte
824	NK=kme-1-K+kms
825	DO I=its,ite
826	! FIX FROM GODDARD FOR NEGATIVE VALUES
827	TTEN2D(I,NK)=MAX(TTEN2D(I,NK),0.)
828	RTHRATEN(I,K,J)=RTHRATEN(I,K,J)+TTEN2D(I,NK)/pi3D(I,K,J)
829	ENDDO
830	ENDDO
831	!
832	ENDDO j_loop
833
834	END SUBROUTINE GSFCSWRAD
835
836	!******************* Version Solar-6 (May 8, 1997) ***************
837
838	subroutine sorad (m,n,ndim,np,pl,ta,wa,oa, &
839	overcast,cldwater,cwc,taucld,reff,fcld,ict,icb, &
840	taual,ssaal,asyal, &
841	cosz,rsuvbm,rsuvdf,rsirbm,rsirdf, &
842	flx,flxd)
843
844	!************************************************************************
845	!
846	! Version Solar-6 (May 8, 1997)
847	!
848	! New feature of this version is:
849	! (1) An option is added for scaling the cloud optical thickness. If
850	! the fractional cloud cover, fcld, in an atmospheric model is alway
851	! either 1 or 0 (i.e. partly cloudy sky is not allowed), it does
852	! not require the scaling of cloud optical thickness, and the
853	! option "overcast" can be set to .true. Computation is faster
854	! with this option than with overcast=.false.
855	!
856	!**********************************************************************
857	!
858	! Version Solar-5 (April 1997)
859	!
860	! New features of this version are:
861	! (1) Cloud optical properties can be computed from cloud water/ice
862	! amount and the effective particle size.
863	! (2) Aerosol optical properties are functions of height and band.
864	! (3) A maximum-random cloud overlapping approximation is applied.
865	!
866	!*********************************************************************
867	!
868	! This routine computes solar fluxes due to the absoption by water
869	! vapor, ozone, co2, o2, clouds, and aerosols and due to the
870	! scattering by clouds, aerosols, and gases.
871	!
872	! The solar spectrum is divided into one UV+visible band and three IR
873	! bands separated by the wavelength 0.7 micron. The UV+visible band
874	! is further divided into eight sub-bands.
875	!
876	! This is a vectorized code. It computes fluxes simultaneously for
877	! (m x n) soundings, which is a subset of (m x ndim) soundings.
878	! In a global climate model, m and ndim correspond to the numbers of
879	! grid boxes in the zonal and meridional directions, respectively.
880	!
881	! Ice and liquid cloud particles are allowed to co-exist in a layer.
882	!
883	! There is an option of providing either cloud ice/water mixing ratio
884	! (cwc) or thickness (taucld). If the former is provided, set
885	! cldwater=.true., and taucld will be computed from cwc and reff as a
886	! function of spectra band. Otherwise, set cldwater=.false., and
887	! specify taucld, independent of spectral band.
888	!
889	! If no information is available for reff, a default value of
890	! 10 micron for liquid water and 75 micron for ice can be used.
891	! For a clear layer, reff can be set to any values except zero.
892	!
893	! The maximum-random assumption is applied for treating cloud
894	! overlapping.
895
896	! Clouds are grouped into high, middle, and low clouds separated by
897	! the level indices ict and icb. For detail, see subroutine cldscale.
898	!
899	! In a high spatial-resolution atmospheric model, fractional cloud cover
900	! might be computed to be either 0 or 1. In such a case, scaling of the
901	! cloud optical thickness is not necessary, and the computation can be
902	! made faster by setting overcast=.true. The option overcast=.false.
903	! can be applied to any values of the fractional cloud cover, but the
904	! computation is slower.
905	!
906	! Aerosol optical thickness, single-scattering albaedo, and asymmtry
907	! factor can be specified as functions of height and spectral band.
908	!
909	!----- Input parameters:
910	! units size
911	! number of soundings in zonal direction (m) n/d 1
912	! number of soundings in meridional direction (n) n/d 1
913	! maximum number of soundings in n/d 1
914	! meridional direction (ndim>=n)
915	! number of atmospheric layers (np) n/d 1
916	! level pressure (pl) mb mndim(np+1)
917	! layer temperature (ta) k mndimnp
918	! layer specific humidity (wa) gm/gm mndimnp
919	! layer ozone concentration (oa) gm/gm mndimnp
920	! co2 mixing ratio by volumn (co2) pppv 1
921	! option for scaling cloud optical thickness n/d 1
922	! overcast="true" if scaling is NOT required
923	! overcast="fasle" if scaling is required
924	! option for cloud optical thickness n/d 1
925	! cldwater="true" if cwc is provided
926	! cldwater="false" if taucld is provided
927	! cloud water mixing ratio (cwc) gm/gm mndimnp*2
928	! index 1 for ice particles
929	! index 2 for liquid drops
930	! cloud optical thickness (taucld) n/d mndimnp*2
931	! index 1 for ice particles
932	! index 2 for liquid drops
933	! effective cloud-particle size (reff) micrometer mndimnp*2
934	! index 1 for ice particles
935	! index 2 for liquid drops
936	! cloud amount (fcld) fraction mndimnp
937	! level index separating high and middle n/d 1
938	! clouds (ict)
939	! level index separating middle and low n/d 1
940	! clouds (icb)
941	! aerosol optical thickness (taual) n/d mndimnp*11
942	! aerosol single-scattering albedo (ssaal) n/d mndimnp*11
943	! aerosol asymmetry factor (asyal) n/d mndimnp*11
944	! in the uv region :
945	! index 1 for the 0.175-0.225 micron band
946	! index 2 for the 0.225-0.245; 0.260-0.280 micron band
947	! index 3 for the 0.245-0.260 micron band
948	! index 4 for the 0.280-0.295 micron band
949	! index 5 for the 0.295-0.310 micron band
950	! index 6 for the 0.310-0.320 micron band
951	! index 7 for the 0.325-0.400 micron band
952	! in the par region :
953	! index 8 for the 0.400-0.700 micron band
954	! in the infrared region :
955	! index 9 for the 0.700-1.220 micron band
956	! index 10 for the 1.220-2.270 micron band
957	! index 11 for the 2.270-10.00 micron band
958	! cosine of solar zenith angle (cosz) n/d m*ndim
959	! uv+visible sfc albedo for beam radiation
960	! for wavelengths<0.7 micron (rsuvbm) fraction m*ndim
961	! uv+visible sfc albedo for diffuse radiation
962	! for wavelengths<0.7 micron (rsuvdf) fraction m*ndim
963	! ir sfc albedo for beam radiation
964	! for wavelengths>0.7 micron (rsirbm) fraction m*ndim
965	! ir sfc albedo for diffuse radiation (rsirdf) fraction m*ndim
966	!
967	!----- Output parameters
968	!
969	! all-sky flux (downward minus upward) (flx) fraction mndim(np+1)
970	! clear-sky flux (downward minus upward) (flc) fraction mndim(np+1)
971	! all-sky direct downward uv (0.175-0.4 micron)
972	! flux at the surface (fdiruv) fraction m*ndim
973	! all-sky diffuse downward uv flux at
974	! the surface (fdifuv) fraction m*ndim
975	! all-sky direct downward par (0.4-0.7 micron)
976	! flux at the surface (fdirpar) fraction m*ndim
977	! all-sky diffuse downward par flux at
978	! the surface (fdifpar) fraction m*ndim
979	! all-sky direct downward ir (0.7-10 micron)
980	! flux at the surface (fdirir) fraction m*ndim
981	! all-sky diffuse downward ir flux at
982	! the surface (fdifir) fraction m*ndim
983	!
984	!----- Notes:
985	!
986	! (1) The unit of "flux" is fraction of the incoming solar radiation
987	! at the top of the atmosphere. Therefore, fluxes should
988	! be equal to "flux" multiplied by the extra-terrestrial solar
989	! flux and the cosine of solar zenith angle.
990	! (2) pl(i,j,1) is the pressure at the top of the model, and
991	! pl(i,j,np+1) is the surface pressure.
992	! (3) the pressure levels ict and icb correspond approximately
993	! to 400 and 700 mb.
994	! (4) if overcast='true', the clear-sky flux, flc, is not computed.
995	!
996	!**************************************************************************
997	implicit none
998	!**************************************************************************
999
1000	!-----input parameters
1001
1002	integer m,n,ndim,np
1003	integer ict(m,ndim),icb(m,ndim)
1004	real pl(m,ndim,np+1),ta(m,ndim,np),wa(m,ndim,np),oa(m,ndim,np)
1005	real cwc(m,ndim,np,2),taucld(m,ndim,np,2),reff(m,ndim,np,2), &
1006	fcld(m,ndim,np)
1007	real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11)
1008	real cosz(m,ndim),rsuvbm(m,ndim),rsuvdf(m,ndim), &
1009	rsirbm(m,ndim),rsirdf(m,ndim)
1010	logical overcast,cldwater
1011
1012	!-----output parameters
1013
1014	real flx(m,ndim,np+1),flc(m,ndim,np+1)
1015	real flxu(m,ndim,np+1),flxd(m,ndim,np+1)
1016	real fdiruv (m,ndim),fdifuv (m,ndim)
1017	real fdirpar(m,ndim),fdifpar(m,ndim)
1018	real fdirir (m,ndim),fdifir (m,ndim)
1019
1020	!-----temporary array
1021
1022	integer i,j,k
1023	real cwp(m,n,np,2)
1024	real dp(m,n,np),wh(m,n,np),oh(m,n,np),scal(m,n,np)
1025	real swh(m,n,np+1),so2(m,n,np+1),df(m,n,np+1)
1026	real sdf(m,n),sclr(m,n),csm(m,n),x
1027
1028	do j= 1, n
1029	do i= 1, m
1030	if (pl(i,j,1) .eq. 0.0) then
1031	pl(i,j,1)=1.0e-4
1032	endif
1033	enddo
1034	enddo
1035
1036	do j= 1, n
1037	do i= 1, m
1038
1039	swh(i,j,1)=0.
1040	so2(i,j,1)=0.
1041
1042	!-----csm is the effective secant of the solar zenith angle
1043	! see equation (12) of Lacis and Hansen (1974, JAS)
1044
1045	csm(i,j)=35./sqrt(1224.cosz(i,j)cosz(i,j)+1.)
1046
1047	enddo
1048	enddo
1049
1050	do k= 1, np
1051	do j= 1, n
1052	do i= 1, m
1053
1054	!-----compute layer thickness and pressure-scaling function.
1055	! indices for the surface level and surface layer
1056	! are np+1 and np, respectively.
1057
1058	dp(i,j,k)=pl(i,j,k+1)-pl(i,j,k)
1059	scal(i,j,k)=dp(i,j,k)(.5(pl(i,j,k)+pl(i,j,k+1))/300.)**.8
1060
1061	!-----compute scaled water vapor amount, unit is g/cm**2
1062	! note: the sign prior to the constant 0.00135 was incorrectly
1063	! set to negative in the previous version
1064
1065	wh(i,j,k)=1.02wa(i,j,k)scal(i,j,k)* &
1066	(1.+0.00135*(ta(i,j,k)-240.)) +1.e-11
1067	swh(i,j,k+1)=swh(i,j,k)+wh(i,j,k)
1068
1069	!-----compute ozone amount, unit is (cm-atm)stp
1070	! the number 466.7 is a conversion factor from g/cm**2 to (cm-atm)stp
1071
1072	oh(i,j,k)=1.02oa(i,j,k)dp(i,j,k)*466.7 +1.e-11
1073
1074	!-----compute layer cloud water amount (gm/m**2)
1075	! the index is 1 for ice crystals and 2 for liquid drops
1076
1077	cwp(i,j,k,1)=1.0210000.cwc(i,j,k,1)*dp(i,j,k)
1078	cwp(i,j,k,2)=1.0210000.cwc(i,j,k,2)*dp(i,j,k)
1079
1080	enddo
1081	enddo
1082	enddo
1083
1084	!-----initialize fluxes for all-sky (flx), clear-sky (flc), and
1085	! flux reduction (df)
1086
1087	do k=1, np+1
1088	do j=1, n
1089	do i=1, m
1090	flx(i,j,k)=0.
1091	flc(i,j,k)=0.
1092	flxu(i,j,k)=0.
1093	flxd(i,j,k)=0.
1094	df(i,j,k)=0.
1095	enddo
1096	enddo
1097	enddo
1098
1099	!-----compute solar uv and par fluxes
1100
1101	call soluv (m,n,ndim,np,oh,dp,overcast,cldwater, &
1102	cwp,taucld,reff,ict,icb,fcld,cosz, &
1103	taual,ssaal,asyal,csm,rsuvbm,rsuvdf, &
1104	flx,flc,flxu,flxd,fdiruv,fdifuv,fdirpar,fdifpar)
1105
1106	!-----compute and update solar ir fluxes
1107
1108	call solir (m,n,ndim,np,wh,overcast,cldwater, &
1109	cwp,taucld,reff,ict,icb,fcld,cosz, &
1110	taual,ssaal,asyal,csm,rsirbm,rsirdf, &
1111	flx,flc,flxu,flxd,fdirir,fdifir)
1112
1113	!-----compute scaled o2 amount, unit is (cm-atm)stp.
1114
1115	do k= 1, np
1116	do j= 1, n
1117	do i= 1, m
1118	so2(i,j,k+1)=so2(i,j,k)+165.22*scal(i,j,k)
1119	enddo
1120	enddo
1121	enddo
1122
1123	!-----compute flux reduction due to oxygen following
1124	! chou (J. climate, 1990). The fraction 0.0287 is the
1125	! extraterrestrial solar flux in the o2 bands.
1126
1127	do k= 2, np+1
1128	do j= 1, n
1129	do i= 1, m
1130	x=so2(i,j,k)*csm(i,j)
1131	df(i,j,k)=df(i,j,k)+0.0287(1.-exp(-0.00027sqrt(x)))
1132	enddo
1133	enddo
1134	enddo
1135
1136	!-----compute scaled co2 amounts. unit is (cm-atm)stp.
1137
1138	do k= 1, np
1139	do j= 1, n
1140	do i= 1, m
1141	so2(i,j,k+1)=so2(i,j,k)+co2789.scal(i,j,k)+1.e-11
1142	enddo
1143	enddo
1144	enddo
1145
1146	!-----compute and update flux reduction due to co2 following
1147	! chou (J. Climate, 1990)
1148
1149	call flxco2(m,n,np,so2,swh,csm,df)
1150
1151	!-----adjust for the effect of o2 cnd co2 on clear-sky fluxes.
1152
1153	do k= 2, np+1
1154	do j= 1, n
1155	do i= 1, m
1156	flc(i,j,k)=flc(i,j,k)-df(i,j,k)
1157	enddo
1158	enddo
1159	enddo
1160
1161	!-----adjust for the all-sky fluxes due to o2 and co2. It is
1162	! assumed that o2 and co2 have no effects on solar radiation
1163	! below clouds.
1164
1165	do j=1,n
1166	do i=1,m
1167	sdf(i,j)=0.0
1168	sclr(i,j)=1.0
1169	enddo
1170	enddo
1171
1172	do k=1,np
1173	do j=1,n
1174	do i=1,m
1175
1176	!-----sclr is the fraction of clear sky.
1177	! sdf is the flux reduction below clouds.
1178
1179	if(fcld(i,j,k).gt.0.01) then
1180	sdf(i,j)=sdf(i,j)+df(i,j,k)sclr(i,j)fcld(i,j,k)
1181	sclr(i,j)=sclr(i,j)*(1.-fcld(i,j,k))
1182	endif
1183	flx(i,j,k+1)=flx(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j)
1184	flxu(i,j,k+1)=flxu(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j)
1185	flxd(i,j,k+1)=flxd(i,j,k+1)-sdf(i,j)-df(i,j,k+1)*sclr(i,j) ! SG: same as flux????
1186
1187	enddo
1188	enddo
1189	enddo
1190
1191	!-----adjustment for the direct downward ir flux.
1192
1193	do j= 1, n
1194	do i= 1, m
1195	flc(i,j,np+1)=flc(i,j,np+1)+df(i,j,np+1)*rsirbm(i,j)
1196	flx(i,j,np+1)=flx(i,j,np+1)+(sdf(i,j)+ &
1197	df(i,j,np+1)sclr(i,j))rsirbm(i,j)
1198	flxu(i,j,np+1)=flxu(i,j,np+1)+(sdf(i,j)+ &
1199	df(i,j,np+1)sclr(i,j))rsirbm(i,j)
1200	flxd(i,j,np+1)=flxd(i,j,np+1)+(sdf(i,j)+ &
1201	df(i,j,np+1)sclr(i,j))rsirbm(i,j)
1202	fdirir(i,j)=fdirir(i,j)-(sdf(i,j)+df(i,j,np+1)*sclr(i,j))
1203	enddo
1204	enddo
1205
1206	end subroutine sorad
1207
1208	!************************************************************************
1209
1210	subroutine soluv (m,n,ndim,np,oh,dp,overcast,cldwater, &
1211	cwp,taucld,reff,ict,icb,fcld,cosz, &
1212	taual,ssaal,asyal,csm,rsuvbm,rsuvdf, &
1213	flx,flc,flxu,flxd,fdiruv,fdifuv,fdirpar,fdifpar)
1214
1215	!************************************************************************
1216	! compute solar fluxes in the uv+par region. the spectrum is
1217	! grouped into 8 bands:
1218	!
1219	! Band Micrometer
1220	!
1221	! UV-C 1. .175 - .225
1222	! 2. .225 - .245
1223	! .260 - .280
1224	! 3. .245 - .260
1225	!
1226	! UV-B 4. .280 - .295
1227	! 5. .295 - .310
1228	! 6. .310 - .320
1229	!
1230	! UV-A 7. .320 - .400
1231	!
1232	! PAR 8. .400 - .700
1233	!
1234	!----- Input parameters: units size
1235	!
1236	! number of soundings in zonal direction (m) n/d 1
1237	! number of soundings in meridional direction (n) n/d 1
1238	! maximum number of soundings in n/d 1
1239	! meridional direction (ndim)
1240	! number of atmospheric layers (np) n/d 1
1241	! layer ozone content (oh) (cm-atm)stp mnnp
1242	! layer pressure thickness (dp) mb mnnp
1243	! option for scaling cloud optical thickness n/d 1
1244	! overcast="true" if scaling is NOT required
1245	! overcast="fasle" if scaling is required
1246	! input option for cloud optical thickness n/d 1
1247	! cldwater="true" if taucld is provided
1248	! cldwater="false" if cwp is provided
1249	! cloud water amount (cwp) gm/m*2 mnnp2
1250	! index 1 for ice particles
1251	! index 2 for liquid drops
1252	! cloud optical thickness (taucld) n/d mndimnp*2
1253	! index 1 for ice paticles
1254	! index 2 for liquid particles
1255	! effective cloud-particle size (reff) micrometer mndimnp*2
1256	! index 1 for ice paticles
1257	! index 2 for liquid particles
1258	! level indiex separating high and n/d m*n
1259	! middle clouds (ict)
1260	! level indiex separating middle and n/d m*n
1261	! low clouds (icb)
1262	! cloud amount (fcld) fraction mndimnp
1263	! cosine of solar zenith angle (cosz) n/d m*ndim
1264	! aerosol optical thickness (taual) n/d mndimnp*11
1265	! aerosol single-scattering albedo (ssaal) n/d mndimnp*11
1266	! aerosol asymmetry factor (asyal) n/d mndimnp*11
1267	! cosecant of the solar zenith angle (csm) n/d m*n
1268	! uv+par surface albedo for beam fraction m*ndim
1269	! radiation (rsuvbm)
1270	! uv+par surface albedo for diffuse fraction m*ndim
1271	! radiation (rsuvdf)
1272	!
1273	!---- temporary array
1274	!
1275	! scaled cloud optical thickness n/d mnnp
1276	! for beam radiation (tauclb)
1277	! scaled cloud optical thickness n/d mnnp
1278	! for diffuse radiation (tauclf)
1279	!
1280	!----- output (updated) parameters:
1281	!
1282	! all-sky net downward flux (flx) fraction mndim(np+1)
1283	! clear-sky net downward flux (flc) fraction mndim(np+1)
1284	! all-sky direct downward uv flux at
1285	! the surface (fdiruv) fraction m*ndim
1286	! all-sky diffuse downward uv flux at
1287	! the surface (fdifuv) fraction m*ndim
1288	! all-sky direct downward par flux at
1289	! the surface (fdirpar) fraction m*ndim
1290	! all-sky diffuse downward par flux at
1291	! the surface (fdifpar) fraction m*ndim
1292	!
1293	!***********************************************************************
1294	implicit none
1295	!***********************************************************************
1296
1297	!-----input parameters
1298
1299	integer m,n,ndim,np
1300	integer ict(m,ndim),icb(m,ndim)
1301	real taucld(m,ndim,np,2),reff(m,ndim,np,2),fcld(m,ndim,np)
1302	real cc(m,n,3),cosz(m,ndim)
1303	real cwp(m,n,np,2),oh(m,n,np),dp(m,n,np)
1304	real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11)
1305	real rsuvbm(m,ndim),rsuvdf(m,ndim),csm(m,n)
1306	logical overcast,cldwater
1307
1308	!-----output (updated) parameter
1309
1310	real flx(m,ndim,np+1),flc(m,ndim,np+1)
1311	real flxu(m,ndim,np+1),flxd(m,ndim,np+1)
1312	real fdiruv (m,ndim),fdifuv (m,ndim)
1313	real fdirpar(m,ndim),fdifpar(m,ndim)
1314
1315	!-----static parameters
1316
1317	integer nband
1318	parameter (nband=8)
1319	real hk(nband),xk(nband),ry(nband)
1320	real aig(3),awg(3)
1321
1322	!-----temporary array
1323
1324	integer i,j,k,ib
1325	real tauclb(m,n,np),tauclf(m,n,np),asycl(m,n,np)
1326	real taurs,tauoz,tausto,ssatau,asysto,tauto,ssato,asyto
1327	real taux,reff1,reff2,g1,g2
1328	real td(m,n,np+1,2),rr(m,n,np+1,2),tt(m,n,np+1,2), &
1329	rs(m,n,np+1,2),ts(m,n,np+1,2)
1330	real fall(m,n,np+1),fclr(m,n,np+1),fsdir(m,n),fsdif(m,n)
1331	real fallu(m,n,np+1),falld(m,n,np+1)
1332	real asyclt(m,n)
1333	real rr1t(m,n),tt1t(m,n),td1t(m,n),rs1t(m,n),ts1t(m,n)
1334	real rr2t(m,n),tt2t(m,n),td2t(m,n),rs2t(m,n),ts2t(m,n)
1335
1336	!-----hk is the fractional extra-terrestrial solar flux in each
1337	! of the 8 bands. the sum of hk is 0.47074.
1338
1339	data hk/.00057, .00367, .00083, .00417, &
1340	.00600, .00556, .05913, .39081/
1341
1342	!-----xk is the ozone absorption coefficient. unit: /(cm-atm)stp
1343
1344	data xk /30.47, 187.2, 301.9, 42.83, &
1345	7.09, 1.25, 0.0345, 0.0539/
1346
1347	!-----ry is the extinction coefficient for Rayleigh scattering.
1348	! unit: /mb.
1349
1350	data ry /.00604, .00170, .00222, .00132, &
1351	.00107, .00091, .00055, .00012/
1352
1353	!-----coefficients for computing the asymmetry factor of ice clouds
1354	! from asycl=aig(,1)+aig(,2)reff+aig(,3)reff*2, independent
1355	! of spectral band.
1356
1357	data aig/.74625000,.00105410,-.00000264/
1358
1359	!-----coefficients for computing the asymmetry factor of liquid
1360	! clouds from asycl=awg(,1)+awg(,2)reff+awg(,3)reff*2,
1361	! independent of spectral band.
1362
1363	data awg/.82562000,.00529000,-.00014866/
1364
1365	!-----initialize fdiruv, fdifuv, surface reflectances and transmittances.
1366	! cc is the maximum cloud cover in each of the three cloud groups.
1367
1368	do j= 1, n
1369	do i= 1, m
1370	fdiruv(i,j)=0.0
1371	fdifuv(i,j)=0.0
1372	rr(i,j,np+1,1)=rsuvbm(i,j)
1373	rr(i,j,np+1,2)=rsuvbm(i,j)
1374	rs(i,j,np+1,1)=rsuvdf(i,j)
1375	rs(i,j,np+1,2)=rsuvdf(i,j)
1376	td(i,j,np+1,1)=0.0
1377	td(i,j,np+1,2)=0.0
1378	tt(i,j,np+1,1)=0.0
1379	tt(i,j,np+1,2)=0.0
1380	ts(i,j,np+1,1)=0.0
1381	ts(i,j,np+1,2)=0.0
1382	cc(i,j,1)=0.0
1383	cc(i,j,2)=0.0
1384	cc(i,j,3)=0.0
1385	enddo
1386	enddo
1387
1388
1389	!-----compute cloud optical thickness
1390
1391	if (cldwater) then
1392
1393	do k= 1, np
1394	do j= 1, n
1395	do i= 1, m
1396	taucld(i,j,k,1)=cwp(i,j,k,1)*( 3.33e-4+2.52/reff(i,j,k,1))
1397	taucld(i,j,k,2)=cwp(i,j,k,2)*(-6.59e-3+1.65/reff(i,j,k,2))
1398	enddo
1399	enddo
1400	enddo
1401
1402	endif
1403
1404	!-----options for scaling cloud optical thickness
1405
1406	if (overcast) then
1407
1408	do k= 1, np
1409	do j= 1, n
1410	do i= 1, m
1411	tauclb(i,j,k)=taucld(i,j,k,1)+taucld(i,j,k,2)
1412	tauclf(i,j,k)=tauclb(i,j,k)
1413	enddo
1414	enddo
1415	enddo
1416
1417	do k= 1, 3
1418	do j= 1, n
1419	do i= 1, m
1420	cc(i,j,k)=1.0
1421	enddo
1422	enddo
1423	enddo
1424
1425	else
1426
1427	!-----scale cloud optical thickness in each layer from taucld (with
1428	! cloud amount fcld) to tauclb and tauclf (with cloud amount cc).
1429	! tauclb is the scaled optical thickness for beam radiation and
1430	! tauclf is for diffuse radiation.
1431
1432	call cldscale(m,n,ndim,np,cosz,fcld,taucld,ict,icb, &
1433	cc,tauclb,tauclf)
1434
1435	endif
1436
1437	!-----compute cloud asymmetry factor for a mixture of
1438	! liquid and ice particles. unit of reff is micrometers.
1439
1440	do k= 1, np
1441
1442	do j= 1, n
1443	do i= 1, m
1444
1445	asyclt(i,j)=1.0
1446
1447	taux=taucld(i,j,k,1)+taucld(i,j,k,2)
1448	if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then
1449
1450	reff1=min(reff(i,j,k,1),130.)
1451	reff2=min(reff(i,j,k,2),20.0)
1452
1453	g1=(aig(1)+(aig(2)+aig(3)reff1)reff1)*taucld(i,j,k,1)
1454	g2=(awg(1)+(awg(2)+awg(3)reff2)reff2)*taucld(i,j,k,2)
1455	asyclt(i,j)=(g1+g2)/taux
1456
1457	endif
1458
1459	enddo
1460	enddo
1461
1462	do j=1,n
1463	do i=1,m
1464	asycl(i,j,k)=asyclt(i,j)
1465	enddo
1466	enddo
1467
1468	enddo
1469
1470	!-----integration over spectral bands
1471
1472	do 100 ib=1,nband
1473
1474	do 300 k= 1, np
1475
1476	do j= 1, n
1477	do i= 1, m
1478
1479	!-----compute ozone and rayleigh optical thicknesses
1480
1481	taurs=ry(ib)*dp(i,j,k)
1482	tauoz=xk(ib)*oh(i,j,k)
1483
1484	!-----compute clear-sky optical thickness, single scattering albedo,
1485	! and asymmetry factor
1486
1487	tausto=taurs+tauoz+taual(i,j,k,ib)+1.0e-8
1488	ssatau=ssaal(i,j,k,ib)*taual(i,j,k,ib)+taurs
1489	asysto=asyal(i,j,k,ib)ssaal(i,j,k,ib)taual(i,j,k,ib)
1490
1491	tauto=tausto
1492	ssato=ssatau/tauto+1.0e-8
1493	ssato=min(ssato,0.999999)
1494	asyto=asysto/(ssato*tauto)
1495
1496	!-----compute reflectance and transmittance for cloudless layers
1497
1498	!- for direct incident radiation
1499
1500	call deledd (tauto,ssato,asyto,csm(i,j), &
1501	rr1t(i,j),tt1t(i,j),td1t(i,j))
1502
1503	!- for diffuse incident radiation
1504
1505	call sagpol (tauto,ssato,asyto,rs1t(i,j),ts1t(i,j))
1506
1507	!-----compute reflectance and transmittance for cloud layers
1508
1509	if (tauclb(i,j,k).lt.0.01 .or. fcld(i,j,k).lt.0.01) then
1510
1511	rr2t(i,j)=rr1t(i,j)
1512	tt2t(i,j)=tt1t(i,j)
1513	td2t(i,j)=td1t(i,j)
1514	rs2t(i,j)=rs1t(i,j)
1515	ts2t(i,j)=ts1t(i,j)
1516
1517	else
1518
1519	!-- for direct incident radiation
1520
1521	tauto=tausto+tauclb(i,j,k)
1522	ssato=(ssatau+tauclb(i,j,k))/tauto+1.0e-8
1523	ssato=min(ssato,0.999999)
1524	asyto=(asysto+asycl(i,j,k)tauclb(i,j,k))/(ssatotauto)
1525
1526	call deledd (tauto,ssato,asyto,csm(i,j), &
1527	rr2t(i,j),tt2t(i,j),td2t(i,j))
1528
1529	!-- for diffuse incident radiation
1530
1531	tauto=tausto+tauclf(i,j,k)
1532	ssato=(ssatau+tauclf(i,j,k))/tauto+1.0e-8
1533	ssato=min(ssato,0.999999)
1534	asyto=(asysto+asycl(i,j,k)tauclf(i,j,k))/(ssatotauto)
1535
1536	call sagpol (tauto,ssato,asyto,rs2t(i,j),ts2t(i,j))
1537
1538	endif
1539
1540	enddo
1541	enddo
1542
1543	do j=1,n
1544	do i=1,m
1545	rr(i,j,k,1)=rr1t(i,j)
1546	enddo
1547	enddo
1548	do j=1,n
1549	do i=1,m
1550	tt(i,j,k,1)=tt1t(i,j)
1551	enddo
1552	enddo
1553	do j=1,n
1554	do i=1,m
1555	td(i,j,k,1)=td1t(i,j)
1556	enddo
1557	enddo
1558	do j=1,n
1559	do i=1,m
1560	rs(i,j,k,1)=rs1t(i,j)
1561	enddo
1562	enddo
1563	do j=1,n
1564	do i=1,m
1565	ts(i,j,k,1)=ts1t(i,j)
1566	enddo
1567	enddo
1568
1569	do j=1,n
1570	do i=1,m
1571	rr(i,j,k,2)=rr2t(i,j)
1572	enddo
1573	enddo
1574	do j=1,n
1575	do i=1,m
1576	tt(i,j,k,2)=tt2t(i,j)
1577	enddo
1578	enddo
1579	do j=1,n
1580	do i=1,m
1581	td(i,j,k,2)=td2t(i,j)
1582	enddo
1583	enddo
1584	do j=1,n
1585	do i=1,m
1586	rs(i,j,k,2)=rs2t(i,j)
1587	enddo
1588	enddo
1589	do j=1,n
1590	do i=1,m
1591	ts(i,j,k,2)=ts2t(i,j)
1592	enddo
1593	enddo
1594
1595	300 continue
1596
1597	!-----flux calculations
1598
1599	call cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts, &
1600	fclr,fall,fallu,falld,fsdir,fsdif)
1601
1602	do k= 1, np+1
1603	do j= 1, n
1604	do i= 1, m
1605	flx(i,j,k)=flx(i,j,k)+fall(i,j,k)*hk(ib)
1606	flxu(i,j,k)=flxu(i,j,k)+fallu(i,j,k)*hk(ib)
1607	flxd(i,j,k)=flxd(i,j,k)+falld(i,j,k)*hk(ib)
1608	enddo
1609	enddo
1610	do j= 1, n
1611	do i= 1, m
1612	flc(i,j,k)=flc(i,j,k)+fclr(i,j,k)*hk(ib)
1613	enddo
1614	enddo
1615	enddo
1616
1617	!-----compute downward surface fluxes in the UV and par regions
1618
1619	if(ib.lt.8) then
1620	do j=1,n
1621	do i=1,m
1622	fdiruv(i,j)=fdiruv(i,j)+fsdir(i,j)*hk(ib)
1623	fdifuv(i,j)=fdifuv(i,j)+fsdif(i,j)*hk(ib)
1624	enddo
1625	enddo
1626	else
1627	do j=1,n
1628	do i=1,m
1629	fdirpar(i,j)=fsdir(i,j)*hk(ib)
1630	fdifpar(i,j)=fsdif(i,j)*hk(ib)
1631	enddo
1632	enddo
1633	endif
1634
1635	100 continue
1636
1637	end subroutine soluv
1638
1639	!************************************************************************
1640
1641	subroutine solir (m,n,ndim,np,wh,overcast,cldwater, &
1642	cwp,taucld,reff,ict,icb,fcld,cosz, &
1643	taual,ssaal,asyal,csm,rsirbm,rsirdf, &
1644	flx,flc,flxu,flxd,fdirir,fdifir)
1645
1646	!************************************************************************
1647	! compute solar flux in the infrared region. The spectrum is divided
1648	! into three bands:
1649	!
1650	! band wavenumber(/cm) wavelength (micron)
1651	! 1( 9) 14300-8200 0.70-1.22
1652	! 2(10) 8200-4400 1.22-2.27
1653	! 3(11) 4400-1000 2.27-10.0
1654	!
1655	!----- Input parameters: units size
1656	!
1657	! number of soundings in zonal direction (m) n/d 1
1658	! number of soundings in meridional direction (n) n/d 1
1659	! maximum number of soundings in n/d 1
1660	! meridional direction (ndim)
1661	! number of atmospheric layers (np) n/d 1
1662	! layer scaled-water vapor content (wh) gm/cm^2 mnnp
1663	! option for scaling cloud optical thickness n/d 1
1664	! overcast="true" if scaling is NOT required
1665	! overcast="fasle" if scaling is required
1666	! input option for cloud optical thickness n/d 1
1667	! cldwater="true" if taucld is provided
1668	! cldwater="false" if cwp is provided
1669	! cloud water concentration (cwp) gm/m*2 mnnp2
1670	! index 1 for ice particles
1671	! index 2 for liquid drops
1672	! cloud optical thickness (taucld) n/d mndimnp*2
1673	! index 1 for ice paticles
1674	! effective cloud-particle size (reff) micrometer mndimnp*2
1675	! index 1 for ice paticles
1676	! index 2 for liquid particles
1677	! level index separating high and n/d m*n
1678	! middle clouds (ict)
1679	! level index separating middle and n/d m*n
1680	! low clouds (icb)
1681	! cloud amount (fcld) fraction mndimnp
1682	! aerosol optical thickness (taual) n/d mndimnp*11
1683	! aerosol single-scattering albedo (ssaal) n/d mndimnp*11
1684	! aerosol asymmetry factor (asyal) n/d mndimnp*11
1685	! cosecant of the solar zenith angle (csm) n/d m*n
1686	! near ir surface albedo for beam fraction m*ndim
1687	! radiation (rsirbm)
1688	! near ir surface albedo for diffuse fraction m*ndim
1689	! radiation (rsirdf)
1690	!
1691	!---- temporary array
1692	!
1693	! scaled cloud optical thickness n/d mnnp
1694	! for beam radiation (tauclb)
1695	! scaled cloud optical thickness n/d mnnp
1696	! for diffuse radiation (tauclf)
1697	!
1698	!----- output (updated) parameters:
1699	!
1700	! all-sky flux (downward-upward) (flx) fraction mndim(np+1)
1701	! clear-sky flux (downward-upward) (flc) fraction mndim(np+1)
1702	! all-sky direct downward ir flux at
1703	! the surface (fdirir) fraction m*ndim
1704	! all-sky diffuse downward ir flux at
1705	! the surface (fdifir) fraction m*ndim
1706	!
1707	!**********************************************************************
1708	implicit none
1709	!**********************************************************************
1710
1711	!-----input parameters
1712
1713	integer m,n,ndim,np
1714	integer ict(m,ndim),icb(m,ndim)
1715	real cwp(m,n,np,2),taucld(m,ndim,np,2),reff(m,ndim,np,2)
1716	real fcld(m,ndim,np),cc(m,n,3),cosz(m,ndim)
1717	real rsirbm(m,ndim),rsirdf(m,ndim)
1718	real taual(m,ndim,np,11),ssaal(m,ndim,np,11),asyal(m,ndim,np,11)
1719	real wh(m,n,np),csm(m,n)
1720	logical overcast,cldwater
1721
1722	!-----output (updated) parameters
1723
1724	real flx(m,ndim,np+1),flc(m,ndim,np+1)
1725	real flxu(m,ndim,np+1),flxd(m,ndim,np+1)
1726	real fdirir(m,ndim),fdifir(m,ndim)
1727
1728	!-----static parameters
1729
1730	integer nk,nband
1731	parameter (nk=10,nband=3)
1732	real xk(nk),hk(nband,nk),aib(nband,2),awb(nband,2)
1733	real aia(nband,3),awa(nband,3),aig(nband,3),awg(nband,3)
1734
1735	!-----temporary array
1736
1737	integer ib,iv,ik,i,j,k
1738	real tauclb(m,n,np),tauclf(m,n,np)
1739	real ssacl(m,n,np),asycl(m,n,np)
1740	real rr(m,n,np+1,2),tt(m,n,np+1,2),td(m,n,np+1,2), &
1741	rs(m,n,np+1,2),ts(m,n,np+1,2)
1742	real fall(m,n,np+1),fclr(m,n,np+1)
1743	real fallu(m,n,np+1),falld(m,n,np+1)
1744	real fsdir(m,n),fsdif(m,n)
1745
1746	real tauwv,tausto,ssatau,asysto,tauto,ssato,asyto
1747	real taux,reff1,reff2,w1,w2,g1,g2
1748	real ssaclt(m,n),asyclt(m,n)
1749	real rr1t(m,n),tt1t(m,n),td1t(m,n),rs1t(m,n),ts1t(m,n)
1750	real rr2t(m,n),tt2t(m,n),td2t(m,n),rs2t(m,n),ts2t(m,n)
1751
1752	!-----water vapor absorption coefficient for 10 k-intervals.
1753	! unit: cm^2/gm
1754
1755	data xk/ &
1756	0.0010, 0.0133, 0.0422, 0.1334, 0.4217, &
1757	1.334, 5.623, 31.62, 177.8, 1000.0/
1758
1759	!-----water vapor k-distribution function,
1760	! the sum of hk is 0.52926. unit: fraction
1761
1762	data hk/ &
1763	.20673,.08236,.01074, .03497,.01157,.00360, &
1764	.03011,.01133,.00411, .02260,.01143,.00421, &
1765	.01336,.01240,.00389, .00696,.01258,.00326, &
1766	.00441,.01381,.00499, .00115,.00650,.00465, &
1767	.00026,.00244,.00245, .00000,.00094,.00145/
1768
1769	!-----coefficients for computing the extinction coefficient of
1770	! ice clouds from b=aib(,1)+aib(,2)/reff
1771
1772	data aib/ &
1773	.000333, .000333, .000333, &
1774	2.52, 2.52, 2.52/
1775
1776	!-----coefficients for computing the extinction coefficient of
1777	! water clouds from b=awb(,1)+awb(,2)/reff
1778
1779	data awb/ &
1780	-0.0101, -0.0166, -0.0339, &
1781	1.72, 1.85, 2.16/
1782
1783
1784	!-----coefficients for computing the single scattering albedo of
1785	! ice clouds from ssa=1-(aia(,1)+aia(,2)reff+aia(,3)reff*2)
1786
1787	data aia/ &
1788	-.00000260, .00215346, .08938331, &
1789	.00000746, .00073709, .00299387, &
1790	.00000000,-.00000134,-.00001038/
1791
1792	!-----coefficients for computing the single scattering albedo of
1793	! liquid clouds from ssa=1-(awa(,1)+awa(,2)reff+awa(,3)reff*2)
1794
1795	data awa/ &
1796	.00000007,-.00019934, .01209318, &
1797	.00000845, .00088757, .01784739, &
1798	-.00000004,-.00000650,-.00036910/
1799
1800	!-----coefficients for computing the asymmetry factor of ice clouds
1801	! from asycl=aig(,1)+aig(,2)reff+aig(,3)reff*2
1802
1803	data aig/ &
1804	.74935228, .76098937, .84090400, &
1805	.00119715, .00141864, .00126222, &
1806	-.00000367,-.00000396,-.00000385/
1807
1808	!-----coefficients for computing the asymmetry factor of liquid clouds
1809	! from asycl=awg(,1)+awg(,2)reff+awg(,3)reff*2
1810
1811	data awg/ &
1812	.79375035, .74513197, .83530748, &
1813	.00832441, .01370071, .00257181, &
1814	-.00023263,-.00038203, .00005519/
1815
1816	!-----initialize surface fluxes, reflectances, and transmittances.
1817	! cc is the maximum cloud cover in each of the three cloud groups.
1818
1819	do j= 1, n
1820	do i= 1, m
1821	fdirir(i,j)=0.0
1822	fdifir(i,j)=0.0
1823	rr(i,j,np+1,1)=rsirbm(i,j)
1824	rr(i,j,np+1,2)=rsirbm(i,j)
1825	rs(i,j,np+1,1)=rsirdf(i,j)
1826	rs(i,j,np+1,2)=rsirdf(i,j)
1827	td(i,j,np+1,1)=0.0
1828	td(i,j,np+1,2)=0.0
1829	tt(i,j,np+1,1)=0.0
1830	tt(i,j,np+1,2)=0.0
1831	ts(i,j,np+1,1)=0.0
1832	ts(i,j,np+1,2)=0.0
1833	cc(i,j,1)=0.0
1834	cc(i,j,2)=0.0
1835	cc(i,j,3)=0.0
1836	enddo
1837	enddo
1838
1839	!-----integration over spectral bands
1840
1841	do 100 ib=1,nband
1842
1843	iv=ib+8
1844
1845	!-----compute cloud optical thickness
1846
1847	if (cldwater) then
1848
1849	do k= 1, np
1850	do j= 1, n
1851	do i= 1, m
1852	taucld(i,j,k,1)=cwp(i,j,k,1)*(aib(ib,1) &
1853	+aib(ib,2)/reff(i,j,k,1))
1854	taucld(i,j,k,2)=cwp(i,j,k,2)*(awb(ib,1) &
1855	+awb(ib,2)/reff(i,j,k,2))
1856	enddo
1857	enddo
1858	enddo
1859
1860	endif
1861
1862	!-----options for scaling cloud optical thickness
1863
1864	if (overcast) then
1865
1866	do k= 1, np
1867	do j= 1, n
1868	do i= 1, m
1869	tauclb(i,j,k)=taucld(i,j,k,1)+taucld(i,j,k,2)
1870	tauclf(i,j,k)=tauclb(i,j,k)
1871	enddo
1872	enddo
1873	enddo
1874
1875	do k= 1, 3
1876	do j= 1, n
1877	do i= 1, m
1878	cc(i,j,k)=1.0
1879	enddo
1880	enddo
1881	enddo
1882
1883	else
1884
1885	!-----scale cloud optical thickness in each layer from taucld (with
1886	! cloud amount fcld) to tauclb and tauclf (with cloud amount cc).
1887	! tauclb is the scaled optical thickness for beam radiation and
1888	! tauclf is for diffuse radiation.
1889
1890	call cldscale(m,n,ndim,np,cosz,fcld,taucld,ict,icb, &
1891	cc,tauclb,tauclf)
1892
1893	endif
1894
1895	!-----compute cloud single scattering albedo and asymmetry factor
1896	! for a mixture of ice and liquid particles.
1897
1898	do k= 1, np
1899
1900	do j= 1, n
1901	do i= 1, m
1902
1903	ssaclt(i,j)=1.0
1904	asyclt(i,j)=1.0
1905
1906	taux=taucld(i,j,k,1)+taucld(i,j,k,2)
1907	if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then
1908
1909	reff1=min(reff(i,j,k,1),130.)
1910	reff2=min(reff(i,j,k,2),20.0)
1911
1912	w1=(1.-(aia(ib,1)+(aia(ib,2)+ &
1913	aia(ib,3)reff1)reff1))*taucld(i,j,k,1)
1914	w2=(1.-(awa(ib,1)+(awa(ib,2)+ &
1915	awa(ib,3)reff2)reff2))*taucld(i,j,k,2)
1916	ssaclt(i,j)=(w1+w2)/taux
1917
1918	g1=(aig(ib,1)+(aig(ib,2)+aig(ib,3)reff1)reff1)*w1
1919	g2=(awg(ib,1)+(awg(ib,2)+awg(ib,3)reff2)reff2)*w2
1920	asyclt(i,j)=(g1+g2)/(w1+w2)
1921
1922	endif
1923
1924	enddo
1925	enddo
1926
1927	do j=1,n
1928	do i=1,m
1929	ssacl(i,j,k)=ssaclt(i,j)
1930	enddo
1931	enddo
1932	do j=1,n
1933	do i=1,m
1934	asycl(i,j,k)=asyclt(i,j)
1935	enddo
1936	enddo
1937
1938	enddo
1939
1940	!-----integration over the k-distribution function
1941
1942	do 200 ik=1,nk
1943
1944	do 300 k= 1, np
1945
1946	do j= 1, n
1947	do i= 1, m
1948
1949	tauwv=xk(ik)*wh(i,j,k)
1950
1951	!-----compute clear-sky optical thickness, single scattering albedo,
1952	! and asymmetry factor.
1953
1954	tausto=tauwv+taual(i,j,k,iv)+1.0e-8
1955	ssatau=ssaal(i,j,k,iv)*taual(i,j,k,iv)
1956	asysto=asyal(i,j,k,iv)ssaal(i,j,k,iv)taual(i,j,k,iv)
1957
1958	!-----compute reflectance and transmittance for cloudless layers
1959
1960	tauto=tausto
1961	ssato=ssatau/tauto+1.0e-8
1962
1963	if (ssato .gt. 0.001) then
1964
1965	ssato=min(ssato,0.999999)
1966	asyto=asysto/(ssato*tauto)
1967
1968	!- for direct incident radiation
1969
1970	call deledd (tauto,ssato,asyto,csm(i,j), &
1971	rr1t(i,j),tt1t(i,j),td1t(i,j))
1972
1973	!- for diffuse incident radiation
1974
1975	call sagpol (tauto,ssato,asyto,rs1t(i,j),ts1t(i,j))
1976
1977	else
1978
1979	td1t(i,j)=exp(-tauto*csm(i,j))
1980	ts1t(i,j)=exp(-1.66*tauto)
1981	tt1t(i,j)=0.0
1982	rr1t(i,j)=0.0
1983	rs1t(i,j)=0.0
1984
1985	endif
1986
1987	!-----compute reflectance and transmittance for cloud layers
1988
1989	if (tauclb(i,j,k).lt.0.01 .or. fcld(i,j,k).lt.0.01) then
1990
1991	rr2t(i,j)=rr1t(i,j)
1992	tt2t(i,j)=tt1t(i,j)
1993	td2t(i,j)=td1t(i,j)
1994	rs2t(i,j)=rs1t(i,j)
1995	ts2t(i,j)=ts1t(i,j)
1996
1997	else
1998
1999	!- for direct incident radiation
2000
2001	tauto=tausto+tauclb(i,j,k)
2002	ssato=(ssatau+ssacl(i,j,k)*tauclb(i,j,k))/tauto+1.0e-8
2003	ssato=min(ssato,0.999999)
2004	asyto=(asysto+asycl(i,j,k)ssacl(i,j,k)tauclb(i,j,k))/ &
2005	(ssato*tauto)
2006
2007	call deledd (tauto,ssato,asyto,csm(i,j), &
2008	rr2t(i,j),tt2t(i,j),td2t(i,j))
2009
2010	!- for diffuse incident radiation
2011
2012	tauto=tausto+tauclf(i,j,k)
2013	ssato=(ssatau+ssacl(i,j,k)*tauclf(i,j,k))/tauto+1.0e-8
2014	ssato=min(ssato,0.999999)
2015	asyto=(asysto+asycl(i,j,k)ssacl(i,j,k)tauclf(i,j,k))/ &
2016	(ssato*tauto)
2017
2018	call sagpol (tauto,ssato,asyto,rs2t(i,j),ts2t(i,j))
2019
2020	endif
2021
2022	enddo
2023	enddo
2024
2025	do j=1,n
2026	do i=1,m
2027	rr(i,j,k,1)=rr1t(i,j)
2028	enddo
2029	enddo
2030	do j=1,n
2031	do i=1,m
2032	tt(i,j,k,1)=tt1t(i,j)
2033	enddo
2034	enddo
2035	do j=1,n
2036	do i=1,m
2037	td(i,j,k,1)=td1t(i,j)
2038	enddo
2039	enddo
2040	do j=1,n
2041	do i=1,m
2042	rs(i,j,k,1)=rs1t(i,j)
2043	enddo
2044	enddo
2045	do j=1,n
2046	do i=1,m
2047	ts(i,j,k,1)=ts1t(i,j)
2048	enddo
2049	enddo
2050
2051	do j=1,n
2052	do i=1,m
2053	rr(i,j,k,2)=rr2t(i,j)
2054	enddo
2055	enddo
2056	do j=1,n
2057	do i=1,m
2058	tt(i,j,k,2)=tt2t(i,j)
2059	enddo
2060	enddo
2061	do j=1,n
2062	do i=1,m
2063	td(i,j,k,2)=td2t(i,j)
2064	enddo
2065	enddo
2066	do j=1,n
2067	do i=1,m
2068	rs(i,j,k,2)=rs2t(i,j)
2069	enddo
2070	enddo
2071	do j=1,n
2072	do i=1,m
2073	ts(i,j,k,2)=ts2t(i,j)
2074	enddo
2075	enddo
2076
2077	300 continue
2078
2079	!-----flux calculations
2080
2081	call cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts, &
2082	fclr,fall,fallu,falld,fsdir,fsdif)
2083
2084	do k= 1, np+1
2085	do j= 1, n
2086	do i= 1, m
2087	flx(i,j,k) = flx(i,j,k)+fall(i,j,k)*hk(ib,ik)
2088	flxu(i,j,k) = flxu(i,j,k)+fallu(i,j,k)*hk(ib,ik)
2089	flxd(i,j,k) = flxd(i,j,k)+falld(i,j,k)*hk(ib,ik)
2090	enddo
2091	enddo
2092	do j= 1, n
2093	do i= 1, m
2094	flc(i,j,k) = flc(i,j,k)+fclr(i,j,k)*hk(ib,ik)
2095	enddo
2096	enddo
2097	enddo
2098
2099	!-----compute downward surface fluxes in the ir region
2100
2101	do j= 1, n
2102	do i= 1, m
2103	fdirir(i,j) = fdirir(i,j)+fsdir(i,j)*hk(ib,ik)
2104	fdifir(i,j) = fdifir(i,j)+fsdif(i,j)*hk(ib,ik)
2105	enddo
2106	enddo
2107
2108	200 continue
2109	100 continue
2110
2111	end subroutine solir
2112
2113	!********************************************************************
2114
2115	subroutine cldscale (m,n,ndim,np,cosz,fcld,taucld,ict,icb, &
2116	cc,tauclb,tauclf)
2117
2118	!********************************************************************
2119	!
2120	! This subroutine computes the high, middle, and
2121	! low cloud amounts and scales the cloud optical thickness.
2122	!
2123	! To simplify calculations in a cloudy atmosphere, clouds are
2124	! grouped into high, middle and low clouds separated by the levels
2125	! ict and icb (level 1 is the top of the model atmosphere).
2126	!
2127	! Within each of the three groups, clouds are assumed maximally
2128	! overlapped, and the cloud cover (cc) of a group is the maximum
2129	! cloud cover of all the layers in the group. The optical thickness
2130	! (taucld) of a given layer is then scaled to new values (tauclb and
2131	! tauclf) so that the layer reflectance corresponding to the cloud
2132	! cover cc is the same as the original reflectance with optical
2133	! thickness taucld and cloud cover fcld.
2134	!
2135	!---input parameters
2136	!
2137	! number of grid intervals in zonal direction (m)
2138	! number of grid intervals in meridional direction (n)
2139	! maximum number of grid intervals in meridional direction (ndim)
2140	! number of atmospheric layers (np)
2141	! cosine of the solar zenith angle (cosz)
2142	! fractional cloud cover (fcld)
2143	! cloud optical thickness (taucld)
2144	! index separating high and middle clouds (ict)
2145	! index separating middle and low clouds (icb)
2146	!
2147	!---output parameters
2148	!
2149	! fractional cover of high, middle, and low clouds (cc)
2150	! scaled cloud optical thickness for beam radiation (tauclb)
2151	! scaled cloud optical thickness for diffuse radiation (tauclf)
2152	!
2153	!********************************************************************
2154	implicit none
2155	!********************************************************************
2156
2157	!-----input parameters
2158
2159	integer m,n,ndim,np
2160	integer ict(m,ndim),icb(m,ndim)
2161	real cosz(m,ndim),fcld(m,ndim,np),taucld(m,ndim,np,2)
2162
2163	!-----output parameters
2164
2165	real cc(m,n,3),tauclb(m,n,np),tauclf(m,n,np)
2166
2167	!-----temporary variables
2168
2169	integer i,j,k,im,it,ia,kk
2170	real fm,ft,fa,xai,taux
2171
2172	!-----pre-computed table
2173
2174	integer nm,nt,na
2175	parameter (nm=11,nt=9,na=11)
2176	real dm,dt,da,t1,caib(nm,nt,na),caif(nt,na)
2177	parameter (dm=0.1,dt=0.30103,da=0.1,t1=-0.9031)
2178
2179	!-----include the pre-computed table of mcai for scaling the cloud optical
2180	! thickness under the assumption that clouds are maximally overlapped
2181	!
2182	! caib is for scaling the cloud optical thickness for direct radiation
2183	! caif is for scaling the cloud optical thickness for diffuse radiation
2184
2185
2186	data ((caib(1,i,j),j=1,11),i=1,9)/ &
2187	.000,0.068,0.140,0.216,0.298,0.385,0.481,0.586,0.705,0.840,1.000, &
2188	.000,0.052,0.106,0.166,0.230,0.302,0.383,0.478,0.595,0.752,1.000, &
2189	.000,0.038,0.078,0.120,0.166,0.218,0.276,0.346,0.438,0.582,1.000, &
2190	.000,0.030,0.060,0.092,0.126,0.164,0.206,0.255,0.322,0.442,1.000, &
2191	.000,0.025,0.051,0.078,0.106,0.136,0.170,0.209,0.266,0.462,1.000, &
2192	.000,0.023,0.046,0.070,0.095,0.122,0.150,0.187,0.278,0.577,1.000, &
2193	.000,0.022,0.043,0.066,0.089,0.114,0.141,0.187,0.354,0.603,1.000, &
2194	.000,0.021,0.042,0.063,0.086,0.108,0.135,0.214,0.349,0.565,1.000, &
2195	.000,0.021,0.041,0.062,0.083,0.105,0.134,0.202,0.302,0.479,1.000/
2196	data ((caib(2,i,j),j=1,11),i=1,9)/ &
2197	.000,0.088,0.179,0.272,0.367,0.465,0.566,0.669,0.776,0.886,1.000, &
2198	.000,0.079,0.161,0.247,0.337,0.431,0.531,0.637,0.749,0.870,1.000, &
2199	.000,0.065,0.134,0.207,0.286,0.372,0.466,0.572,0.692,0.831,1.000, &
2200	.000,0.049,0.102,0.158,0.221,0.290,0.370,0.465,0.583,0.745,1.000, &
2201	.000,0.037,0.076,0.118,0.165,0.217,0.278,0.354,0.459,0.638,1.000, &
2202	.000,0.030,0.061,0.094,0.130,0.171,0.221,0.286,0.398,0.631,1.000, &
2203	.000,0.026,0.052,0.081,0.111,0.146,0.189,0.259,0.407,0.643,1.000, &
2204	.000,0.023,0.047,0.072,0.098,0.129,0.170,0.250,0.387,0.598,1.000, &
2205	.000,0.022,0.044,0.066,0.090,0.118,0.156,0.224,0.328,0.508,1.000/
2206	data ((caib(3,i,j),j=1,11),i=1,9)/ &
2207	.000,0.094,0.189,0.285,0.383,0.482,0.582,0.685,0.788,0.894,1.000, &
2208	.000,0.088,0.178,0.271,0.366,0.465,0.565,0.669,0.776,0.886,1.000, &
2209	.000,0.079,0.161,0.247,0.337,0.431,0.531,0.637,0.750,0.870,1.000, &
2210	.000,0.066,0.134,0.209,0.289,0.375,0.470,0.577,0.697,0.835,1.000, &
2211	.000,0.050,0.104,0.163,0.227,0.300,0.383,0.483,0.606,0.770,1.000, &
2212	.000,0.038,0.080,0.125,0.175,0.233,0.302,0.391,0.518,0.710,1.000, &
2213	.000,0.031,0.064,0.100,0.141,0.188,0.249,0.336,0.476,0.689,1.000, &
2214	.000,0.026,0.054,0.084,0.118,0.158,0.213,0.298,0.433,0.638,1.000, &
2215	.000,0.023,0.048,0.074,0.102,0.136,0.182,0.254,0.360,0.542,1.000/
2216	data ((caib(4,i,j),j=1,11),i=1,9)/ &
2217	.000,0.096,0.193,0.290,0.389,0.488,0.589,0.690,0.792,0.896,1.000, &
2218	.000,0.092,0.186,0.281,0.378,0.477,0.578,0.680,0.785,0.891,1.000, &
2219	.000,0.086,0.174,0.264,0.358,0.455,0.556,0.660,0.769,0.882,1.000, &
2220	.000,0.074,0.153,0.235,0.323,0.416,0.514,0.622,0.737,0.862,1.000, &
2221	.000,0.061,0.126,0.195,0.271,0.355,0.449,0.555,0.678,0.823,1.000, &
2222	.000,0.047,0.098,0.153,0.215,0.286,0.370,0.471,0.600,0.770,1.000, &
2223	.000,0.037,0.077,0.120,0.170,0.230,0.303,0.401,0.537,0.729,1.000, &
2224	.000,0.030,0.062,0.098,0.138,0.187,0.252,0.343,0.476,0.673,1.000, &
2225	.000,0.026,0.053,0.082,0.114,0.154,0.207,0.282,0.391,0.574,1.000/
2226	data ((caib(5,i,j),j=1,11),i=1,9)/ &
2227	.000,0.097,0.194,0.293,0.392,0.492,0.592,0.693,0.794,0.897,1.000, &
2228	.000,0.094,0.190,0.286,0.384,0.483,0.584,0.686,0.789,0.894,1.000, &
2229	.000,0.090,0.181,0.274,0.370,0.468,0.569,0.672,0.778,0.887,1.000, &
2230	.000,0.081,0.165,0.252,0.343,0.439,0.539,0.645,0.757,0.874,1.000, &
2231	.000,0.069,0.142,0.218,0.302,0.392,0.490,0.598,0.717,0.850,1.000, &
2232	.000,0.054,0.114,0.178,0.250,0.330,0.422,0.529,0.656,0.810,1.000, &
2233	.000,0.042,0.090,0.141,0.200,0.269,0.351,0.455,0.589,0.764,1.000, &
2234	.000,0.034,0.070,0.112,0.159,0.217,0.289,0.384,0.515,0.703,1.000, &
2235	.000,0.028,0.058,0.090,0.128,0.174,0.231,0.309,0.420,0.602,1.000/
2236	data ((caib(6,i,j),j=1,11),i=1,9)/ &
2237	.000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, &
2238	.000,0.096,0.193,0.290,0.389,0.488,0.588,0.690,0.792,0.895,1.000, &
2239	.000,0.092,0.186,0.281,0.378,0.477,0.577,0.680,0.784,0.891,1.000, &
2240	.000,0.086,0.174,0.264,0.358,0.455,0.556,0.661,0.769,0.882,1.000, &
2241	.000,0.075,0.154,0.237,0.325,0.419,0.518,0.626,0.741,0.865,1.000, &
2242	.000,0.062,0.129,0.201,0.279,0.366,0.462,0.571,0.694,0.836,1.000, &
2243	.000,0.049,0.102,0.162,0.229,0.305,0.394,0.501,0.631,0.793,1.000, &
2244	.000,0.038,0.080,0.127,0.182,0.245,0.323,0.422,0.550,0.730,1.000, &
2245	.000,0.030,0.064,0.100,0.142,0.192,0.254,0.334,0.448,0.627,1.000/
2246	data ((caib(7,i,j),j=1,11),i=1,9)/ &
2247	.000,0.098,0.198,0.296,0.396,0.496,0.596,0.696,0.797,0.898,1.000, &
2248	.000,0.097,0.194,0.293,0.392,0.491,0.591,0.693,0.794,0.897,1.000, &
2249	.000,0.094,0.190,0.286,0.384,0.483,0.583,0.686,0.789,0.894,1.000, &
2250	.000,0.089,0.180,0.274,0.369,0.467,0.568,0.672,0.778,0.887,1.000, &
2251	.000,0.081,0.165,0.252,0.344,0.440,0.541,0.646,0.758,0.875,1.000, &
2252	.000,0.069,0.142,0.221,0.306,0.397,0.496,0.604,0.722,0.854,1.000, &
2253	.000,0.056,0.116,0.182,0.256,0.338,0.432,0.540,0.666,0.816,1.000, &
2254	.000,0.043,0.090,0.143,0.203,0.273,0.355,0.455,0.583,0.754,1.000, &
2255	.000,0.034,0.070,0.111,0.157,0.210,0.276,0.359,0.474,0.650,1.000/
2256	data ((caib(8,i,j),j=1,11),i=1,9)/ &
2257	.000,0.099,0.198,0.298,0.398,0.497,0.598,0.698,0.798,0.899,1.000, &
2258	.000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, &
2259	.000,0.096,0.193,0.290,0.390,0.489,0.589,0.690,0.793,0.896,1.000, &
2260	.000,0.093,0.186,0.282,0.379,0.478,0.578,0.681,0.786,0.892,1.000, &
2261	.000,0.086,0.175,0.266,0.361,0.458,0.558,0.663,0.771,0.883,1.000, &
2262	.000,0.076,0.156,0.240,0.330,0.423,0.523,0.630,0.744,0.867,1.000, &
2263	.000,0.063,0.130,0.203,0.282,0.369,0.465,0.572,0.694,0.834,1.000, &
2264	.000,0.049,0.102,0.161,0.226,0.299,0.385,0.486,0.611,0.774,1.000, &
2265	.000,0.038,0.078,0.122,0.172,0.229,0.297,0.382,0.498,0.672,1.000/
2266	data ((caib(9,i,j),j=1,11),i=1,9)/ &
2267	.000,0.099,0.199,0.298,0.398,0.498,0.598,0.699,0.799,0.899,1.000, &
2268	.000,0.099,0.198,0.298,0.398,0.497,0.598,0.698,0.798,0.899,1.000, &
2269	.000,0.098,0.196,0.295,0.394,0.494,0.594,0.695,0.796,0.898,1.000, &
2270	.000,0.096,0.193,0.290,0.389,0.488,0.588,0.690,0.792,0.895,1.000, &
2271	.000,0.092,0.185,0.280,0.376,0.474,0.575,0.678,0.782,0.890,1.000, &
2272	.000,0.084,0.170,0.259,0.351,0.447,0.547,0.652,0.762,0.878,1.000, &
2273	.000,0.071,0.146,0.224,0.308,0.398,0.494,0.601,0.718,0.850,1.000, &
2274	.000,0.056,0.114,0.178,0.248,0.325,0.412,0.514,0.638,0.793,1.000, &
2275	.000,0.042,0.086,0.134,0.186,0.246,0.318,0.405,0.521,0.691,1.000/
2276	data ((caib(10,i,j),j=1,11),i=1,9)/ &
2277	.000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, &
2278	.000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, &
2279	.000,0.100,0.200,0.300,0.400,0.500,0.600,0.700,0.800,0.900,1.000, &
2280	.000,0.100,0.199,0.298,0.398,0.498,0.598,0.698,0.798,0.899,1.000, &
2281	.000,0.098,0.196,0.294,0.392,0.491,0.590,0.691,0.793,0.896,1.000, &
2282	.000,0.092,0.185,0.278,0.374,0.470,0.570,0.671,0.777,0.886,1.000, &
2283	.000,0.081,0.162,0.246,0.333,0.424,0.521,0.625,0.738,0.862,1.000, &
2284	.000,0.063,0.128,0.196,0.270,0.349,0.438,0.540,0.661,0.809,1.000, &
2285	.000,0.046,0.094,0.146,0.202,0.264,0.337,0.426,0.542,0.710,1.000/
2286	data ((caib(11,i,j),j=1,11),i=1,9)/ &
2287	.000,0.101,0.202,0.302,0.402,0.502,0.602,0.702,0.802,0.901,1.000, &
2288	.000,0.102,0.202,0.303,0.404,0.504,0.604,0.703,0.802,0.902,1.000, &
2289	.000,0.102,0.205,0.306,0.406,0.506,0.606,0.706,0.804,0.902,1.000, &
2290	.000,0.104,0.207,0.309,0.410,0.510,0.609,0.707,0.805,0.902,1.000, &
2291	.000,0.106,0.208,0.309,0.409,0.508,0.606,0.705,0.803,0.902,1.000, &
2292	.000,0.102,0.202,0.298,0.395,0.493,0.590,0.690,0.790,0.894,1.000, &
2293	.000,0.091,0.179,0.267,0.357,0.449,0.545,0.647,0.755,0.872,1.000, &
2294	.000,0.073,0.142,0.214,0.290,0.372,0.462,0.563,0.681,0.822,1.000, &
2295	.000,0.053,0.104,0.158,0.217,0.281,0.356,0.446,0.562,0.726,1.000/
2296	data ((caif(i,j),j=1,11),i=1,9)/ &
2297	.000,0.099,0.198,0.297,0.397,0.496,0.597,0.697,0.798,0.899,1.000, &
2298	.000,0.098,0.196,0.294,0.394,0.494,0.594,0.694,0.796,0.898,1.000, &
2299	.000,0.096,0.192,0.290,0.388,0.487,0.587,0.689,0.792,0.895,1.000, &
2300	.000,0.092,0.185,0.280,0.376,0.476,0.576,0.678,0.783,0.890,1.000, &
2301	.000,0.085,0.173,0.263,0.357,0.454,0.555,0.659,0.768,0.881,1.000, &
2302	.000,0.076,0.154,0.237,0.324,0.418,0.517,0.624,0.738,0.864,1.000, &
2303	.000,0.063,0.131,0.203,0.281,0.366,0.461,0.567,0.688,0.830,1.000, &
2304	.000,0.052,0.107,0.166,0.232,0.305,0.389,0.488,0.610,0.770,1.000, &
2305	.000,0.043,0.088,0.136,0.189,0.248,0.317,0.400,0.510,0.675,1.000/
2306
2307	!-----clouds within each of the high, middle, and low clouds are assumed
2308	! to be maximally overlapped, and the cloud cover (cc) for a group
2309	! (high, middle, or low) is the maximum cloud cover of all the layers
2310	! within a group
2311
2312	do j=1,n
2313	do i=1,m
2314	cc(i,j,1)=0.0
2315	cc(i,j,2)=0.0
2316	cc(i,j,3)=0.0
2317	enddo
2318	enddo
2319	do j=1,n
2320	do i=1,m
2321	do k=1,ict(i,j)-1
2322	cc(i,j,1)=max(cc(i,j,1),fcld(i,j,k))
2323	enddo
2324	enddo
2325	enddo
2326
2327	do j=1,n
2328	do i=1,m
2329	do k=ict(i,j),icb(i,j)-1
2330	cc(i,j,2)=max(cc(i,j,2),fcld(i,j,k))
2331	enddo
2332	enddo
2333	enddo
2334
2335	do j=1,n
2336	do i=1,m
2337	do k=icb(i,j),np
2338	cc(i,j,3)=max(cc(i,j,3),fcld(i,j,k))
2339	enddo
2340	enddo
2341	enddo
2342
2343	!-----scale the cloud optical thickness.
2344	! taucld(i,j,k,1) is the optical thickness for ice particles, and
2345	! taucld(i,j,k,2) is the optical thickness for liquid particles.
2346
2347	do j=1,n
2348	do i=1,m
2349
2350	do k=1,np
2351
2352	if(k.lt.ict(i,j)) then
2353	kk=1
2354	elseif(k.ge.ict(i,j) .and. k.lt.icb(i,j)) then
2355	kk=2
2356	else
2357	kk=3
2358	endif
2359
2360	tauclb(i,j,k) = 0.0
2361	tauclf(i,j,k) = 0.0
2362
2363	taux=taucld(i,j,k,1)+taucld(i,j,k,2)
2364	if (taux.gt.0.05 .and. fcld(i,j,k).gt.0.01) then
2365
2366	!-----normalize cloud cover
2367
2368	fa=fcld(i,j,k)/cc(i,j,kk)
2369
2370	!-----table look-up
2371
2372	taux=min(taux,32.)
2373
2374	fm=cosz(i,j)/dm
2375	ft=(log10(taux)-t1)/dt
2376	fa=fa/da
2377
2378	im=int(fm+1.5)
2379	it=int(ft+1.5)
2380	ia=int(fa+1.5)
2381
2382	im=max(im,2)
2383	it=max(it,2)
2384	ia=max(ia,2)
2385
2386	im=min(im,nm-1)
2387	it=min(it,nt-1)
2388	ia=min(ia,na-1)
2389
2390	fm=fm-float(im-1)
2391	ft=ft-float(it-1)
2392	fa=fa-float(ia-1)
2393
2394	!-----scale cloud optical thickness for beam radiation.
2395	! the scaling factor, xai, is a function of the solar zenith
2396	! angle, optical thickness, and cloud cover.
2397
2398	xai= (-caib(im-1,it,ia)*(1.-fm)+ &
2399	caib(im+1,it,ia)(1.+fm))fm.5+caib(im,it,ia)(1.-fm*fm)
2400
2401	xai=xai+(-caib(im,it-1,ia)*(1.-ft)+ &
2402	caib(im,it+1,ia)(1.+ft))ft.5+caib(im,it,ia)(1.-ft*ft)
2403
2404	xai=xai+(-caib(im,it,ia-1)*(1.-fa)+ &
2405	caib(im,it,ia+1)(1.+fa))fa.5+caib(im,it,ia)(1.-fa*fa)
2406
2407	xai= xai-2.*caib(im,it,ia)
2408	xai=max(xai,0.0)
2409
2410	tauclb(i,j,k) = taux*xai
2411
2412	!-----scale cloud optical thickness for diffuse radiation.
2413	! the scaling factor, xai, is a function of the cloud optical
2414	! thickness and cover but not the solar zenith angle.
2415
2416	xai= (-caif(it-1,ia)*(1.-ft)+ &
2417	caif(it+1,ia)(1.+ft))ft.5+caif(it,ia)(1.-ft*ft)
2418
2419	xai=xai+(-caif(it,ia-1)*(1.-fa)+ &
2420	caif(it,ia+1)(1.+fa))fa.5+caif(it,ia)(1.-fa*fa)
2421
2422	xai= xai-caif(it,ia)
2423	xai=max(xai,0.0)
2424
2425	tauclf(i,j,k) = taux*xai
2426
2427	endif
2428
2429	enddo
2430	enddo
2431	enddo
2432
2433	end subroutine cldscale
2434
2435	!*********************************************************************
2436
2437	subroutine deledd(tau,ssc,g0,csm,rr,tt,td)
2438
2439	!*********************************************************************
2440	!
2441	!-----uses the delta-eddington approximation to compute the
2442	! bulk scattering properties of a single layer
2443	! coded following King and Harshvardhan (JAS, 1986)
2444	!
2445	! inputs:
2446	!
2447	! tau: the effective optical thickness
2448	! ssc: the effective single scattering albedo
2449	! g0: the effective asymmetry factor
2450	! csm: the effective secant of the zenith angle
2451	!
2452	! outputs:
2453	!
2454	! rr: the layer reflection of the direct beam
2455	! tt: the layer diffuse transmission of the direct beam
2456	! td: the layer direct transmission of the direct beam
2457	!
2458	!*********************************************************************
2459	implicit none
2460	!*********************************************************************
2461
2462	real zero,one,two,three,four,fourth,seven,thresh
2463	parameter (one =1., three=3.)
2464	parameter (two =2., seven=7.)
2465	parameter (four=4., fourth=.25)
2466	parameter (zero=0., thresh=1.e-8)
2467
2468	!-----input parameters
2469	real tau,ssc,g0,csm
2470
2471	!-----output parameters
2472	real rr,tt,td
2473
2474	!-----temporary parameters
2475
2476	real zth,ff,xx,taup,sscp,gp,gm1,gm2,gm3,akk,alf1,alf2, &
2477	all,bll,st7,st8,cll,dll,fll,ell,st1,st2,st3,st4
2478
2479	!---------------------------------------------------------------------
2480
2481	zth = one / csm
2482
2483	! delta-eddington scaling of single scattering albedo,
2484	! optical thickness, and asymmetry factor,
2485	! K & H eqs(27-29)
2486
2487	ff = g0*g0
2488	xx = one-ff*ssc
2489	taup= tau*xx
2490	sscp= ssc*(one-ff)/xx
2491	gp = g0/(one+g0)
2492
2493	! gamma1, gamma2, and gamma3. see table 2 and eq(26) K & H
2494	! ssc and gp are the d-s single scattering
2495	! albedo and asymmetry factor.
2496
2497	xx = three*gp
2498	gm1 = (seven - sscp(four+xx))fourth
2499	gm2 = -(one - sscp(four-xx))fourth
2500
2501	! akk is k as defined in eq(25) of K & H
2502
2503	akk = sqrt((gm1+gm2)*(gm1-gm2))
2504
2505	xx = akk * zth
2506	st7 = one - xx
2507	st8 = one + xx
2508	st3 = st7 * st8
2509
2510	if (abs(st3) .lt. thresh) then
2511	zth = zth + 0.001
2512	xx = akk * zth
2513	st7 = one - xx
2514	st8 = one + xx
2515	st3 = st7 * st8
2516	endif
2517
2518	! extinction of the direct beam transmission
2519
2520	td = exp(-taup/zth)
2521
2522	! alf1 and alf2 are alpha1 and alpha2 from eqs (23) & (24) of K & H
2523
2524	gm3 = (two - zththreegp)*fourth
2525	xx = gm1 - gm2
2526	alf1 = gm1 - gm3 * xx
2527	alf2 = gm2 + gm3 * xx
2528
2529	! all is last term in eq(21) of K & H
2530	! bll is last term in eq(22) of K & H
2531
2532	xx = akk * two
2533	all = (gm3 - alf2 * zth )xxtd
2534	bll = (one - gm3 + alf1zth)xx
2535
2536	xx = akk * gm3
2537	cll = (alf2 + xx) * st7
2538	dll = (alf2 - xx) * st8
2539
2540	xx = akk * (one-gm3)
2541	fll = (alf1 + xx) * st8
2542	ell = (alf1 - xx) * st7
2543
2544	st2 = exp(-akk*taup)
2545	st4 = st2 * st2
2546
2547	st1 = sscp / ((akk+gm1 + (akk-gm1)st4) st3)
2548
2549	! rr is r-hat of eq(21) of K & H
2550	! tt is diffuse part of t-hat of eq(22) of K & H
2551
2552	rr = ( cll-dllst4 -allst2)*st1
2553	tt = - ((fll-ellst4)td-bllst2)st1
2554
2555	rr = max(rr,zero)
2556	tt = max(tt,zero)
2557
2558	end subroutine deledd
2559
2560	!*********************************************************************
2561
2562	subroutine sagpol(tau,ssc,g0,rll,tll)
2563
2564	!*********************************************************************
2565	!-----transmittance (tll) and reflectance (rll) of diffuse radiation
2566	! follows Sagan and Pollock (JGR, 1967).
2567	! also, eq.(31) of Lacis and Hansen (JAS, 1974).
2568	!
2569	!-----input parameters:
2570	!
2571	! tau: the effective optical thickness
2572	! ssc: the effective single scattering albedo
2573	! g0: the effective asymmetry factor
2574	!
2575	!-----output parameters:
2576	!
2577	! rll: the layer reflection of diffuse radiation
2578	! tll: the layer transmission of diffuse radiation
2579	!
2580	!*********************************************************************
2581	implicit none
2582	!*********************************************************************
2583
2584	real one,three,four
2585	parameter (one=1., three=3., four=4.)
2586
2587	!-----output parameters:
2588
2589	real tau,ssc,g0
2590
2591	!-----output parameters:
2592
2593	real rll,tll
2594
2595	!-----temporary arrays
2596
2597	real xx,uuu,ttt,emt,up1,um1,st1
2598
2599	xx = one-ssc*g0
2600	uuu = sqrt( xx/(one-ssc))
2601	ttt = sqrt( xx(one-ssc)three )*tau
2602	emt = exp(-ttt)
2603	up1 = uuu + one
2604	um1 = uuu - one
2605	xx = um1*emt
2606	st1 = one / ((up1+xx) * (up1-xx))
2607	rll = up1um1(one-emtemt)st1
2608	tll = uuufouremt *st1
2609
2610	end subroutine sagpol
2611
2612	!*******************************************************************
2613
2614	subroutine cldflx (m,n,np,ict,icb,overcast,cc,rr,tt,td,rs,ts,&
2615	fclr,fall,fallu,falld,fsdir,fsdif)
2616
2617	!*******************************************************************
2618	! compute upward and downward fluxes using a two-stream adding method
2619	! following equations (3)-(5) of Chou (1992, JAS).
2620	!
2621	! clouds are grouped into high, middle, and low clouds which are
2622	! assumed randomly overlapped. It involves eight sets of calculations.
2623	! In each set of calculations, each atmospheric layer is homogeneous,
2624	! either totally filled with clouds or without clouds.
2625
2626	! input parameters:
2627	!
2628	! m: number of soundings in zonal direction
2629	! n: number of soundings in meridional direction
2630	! np: number of atmospheric layers
2631	! ict: the level separating high and middle clouds
2632	! icb: the level separating middle and low clouds
2633	! cc: effective cloud covers for high, middle and low clouds
2634	! tt: diffuse transmission of a layer illuminated by beam radiation
2635	! td: direct beam tranmssion
2636	! ts: transmission of a layer illuminated by diffuse radiation
2637	! rr: reflection of a layer illuminated by beam radiation
2638	! rs: reflection of a layer illuminated by diffuse radiation
2639	!
2640	! output parameters:
2641	!
2642	! fclr: clear-sky flux (downward minus upward)
2643	! fall: all-sky flux (downward minus upward)
2644	! fsdir: surface direct downward flux
2645	! fsdif: surface diffuse downward flux
2646	!
2647	!*********************************************************************c
2648	implicit none
2649	!*********************************************************************c
2650
2651	!-----input parameters
2652
2653	integer m,n,np
2654	integer ict(m,n),icb(m,n)
2655
2656	real rr(m,n,np+1,2),tt(m,n,np+1,2),td(m,n,np+1,2)
2657	real rs(m,n,np+1,2),ts(m,n,np+1,2)
2658	real cc(m,n,3)
2659	logical overcast
2660
2661	!-----temporary array
2662
2663	integer i,j,k,ih,im,is,itm
2664	real rra(m,n,np+1,2,2),tta(m,n,np+1,2,2),tda(m,n,np+1,2,2)
2665	real rsa(m,n,np+1,2,2),rxa(m,n,np+1,2,2)
2666	real ch(m,n),cm(m,n),ct(m,n),flxdn(m,n,np+1)
2667	real flxdnu(m,n,np+1),flxdnd(m,n,np+1)
2668	real fdndir(m,n),fdndif(m,n),fupdif
2669	real denm,xx
2670
2671	!-----output parameters
2672
2673	real fclr(m,n,np+1),fall(m,n,np+1)
2674	real fallu(m,n,np+1),falld(m,n,np+1)
2675	real fsdir(m,n),fsdif(m,n)
2676
2677	!-----initialize all-sky flux (fall) and surface downward fluxes
2678
2679	do k=1,np+1
2680	do j=1,n
2681	do i=1,m
2682	fclr(i,j,k)=0.0
2683	fall(i,j,k)=0.0
2684	fallu(i,j,k)=0.0
2685	falld(i,j,k)=0.0
2686	enddo
2687	enddo
2688	enddo
2689
2690	do j=1,n
2691	do i=1,m
2692	fsdir(i,j)=0.0
2693	fsdif(i,j)=0.0
2694	enddo
2695	enddo
2696
2697	!-----compute transmittances and reflectances for a composite of
2698	! layers. layers are added one at a time, going down from the top.
2699	! tda is the composite transmittance illuminated by beam radiation
2700	! tta is the composite diffuse transmittance illuminated by
2701	! beam radiation
2702	! rsa is the composite reflectance illuminated from below
2703	! by diffuse radiation
2704	! tta and rsa are computed from eqs. (4b) and (3b) of Chou
2705
2706	itm=1
2707
2708	!-----if overcas.=.true., set itm=2, and only one set of fluxes is computed
2709
2710	if (overcast) itm=2
2711
2712	!-----for high clouds. indices 1 and 2 denote clear and cloudy
2713	! situations, respectively.
2714
2715	do 10 ih=itm,2
2716
2717	do j= 1, n
2718	do i= 1, m
2719	tda(i,j,1,ih,1)=td(i,j,1,ih)
2720	tta(i,j,1,ih,1)=tt(i,j,1,ih)
2721	rsa(i,j,1,ih,1)=rs(i,j,1,ih)
2722	tda(i,j,1,ih,2)=td(i,j,1,ih)
2723	tta(i,j,1,ih,2)=tt(i,j,1,ih)
2724	rsa(i,j,1,ih,2)=rs(i,j,1,ih)
2725	enddo
2726	enddo
2727
2728	do j= 1, n
2729	do i= 1, m
2730	do k= 2, ict(i,j)-1
2731	denm = ts(i,j,k,ih)/( 1.-rsa(i,j,k-1,ih,1)*rs(i,j,k,ih))
2732	tda(i,j,k,ih,1)= tda(i,j,k-1,ih,1)*td(i,j,k,ih)
2733	tta(i,j,k,ih,1)= tda(i,j,k-1,ih,1)*tt(i,j,k,ih) &
2734	+(tda(i,j,k-1,ih,1)*rr(i,j,k,ih) &
2735	rsa(i,j,k-1,ih,1)+tta(i,j,k-1,ih,1))denm
2736	rsa(i,j,k,ih,1)= rs(i,j,k,ih)+ts(i,j,k,ih) &
2737	rsa(i,j,k-1,ih,1)denm
2738	tda(i,j,k,ih,2)= tda(i,j,k,ih,1)
2739	tta(i,j,k,ih,2)= tta(i,j,k,ih,1)
2740	rsa(i,j,k,ih,2)= rsa(i,j,k,ih,1)
2741	enddo
2742	enddo
2743	enddo
2744
2745	!-----for middle clouds
2746
2747	do 10 im=itm,2
2748
2749	do j= 1, n
2750	do i= 1, m
2751	do k= ict(i,j), icb(i,j)-1
2752	denm = ts(i,j,k,im)/( 1.-rsa(i,j,k-1,ih,im)*rs(i,j,k,im))
2753	tda(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*td(i,j,k,im)
2754	tta(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*tt(i,j,k,im) &
2755	+(tda(i,j,k-1,ih,im)*rr(i,j,k,im) &
2756	rsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))denm
2757	rsa(i,j,k,ih,im)= rs(i,j,k,im)+ts(i,j,k,im) &
2758	rsa(i,j,k-1,ih,im)denm
2759	enddo
2760	enddo
2761	enddo
2762
2763	10 continue
2764
2765	!-----layers are added one at a time, going up from the surface.
2766	! rra is the composite reflectance illuminated by beam radiation
2767	! rxa is the composite reflectance illuminated from above
2768	! by diffuse radiation
2769	! rra and rxa are computed from eqs. (4a) and (3a) of Chou
2770
2771	!-----for the low clouds
2772
2773	do 20 is=itm,2
2774
2775	do j= 1, n
2776	do i= 1, m
2777	rra(i,j,np+1,1,is)=rr(i,j,np+1,is)
2778	rxa(i,j,np+1,1,is)=rs(i,j,np+1,is)
2779	rra(i,j,np+1,2,is)=rr(i,j,np+1,is)
2780	rxa(i,j,np+1,2,is)=rs(i,j,np+1,is)
2781	enddo
2782	enddo
2783
2784	do j= 1, n
2785	do i= 1, m
2786	do k=np,icb(i,j),-1
2787	denm=ts(i,j,k,is)/( 1.-rs(i,j,k,is)*rxa(i,j,k+1,1,is) )
2788	rra(i,j,k,1,is)=rr(i,j,k,is)+(td(i,j,k,is) &
2789	rra(i,j,k+1,1,is)+tt(i,j,k,is)rxa(i,j,k+1,1,is))*denm
2790	rxa(i,j,k,1,is)= rs(i,j,k,is)+ts(i,j,k,is) &
2791	rxa(i,j,k+1,1,is)denm
2792	rra(i,j,k,2,is)=rra(i,j,k,1,is)
2793	rxa(i,j,k,2,is)=rxa(i,j,k,1,is)
2794	enddo
2795	enddo
2796	enddo
2797
2798	!-----for middle clouds
2799
2800	do 20 im=itm,2
2801
2802	do j= 1, n
2803	do i= 1, m
2804	do k= icb(i,j)-1,ict(i,j),-1
2805	denm=ts(i,j,k,im)/( 1.-rs(i,j,k,im)*rxa(i,j,k+1,im,is) )
2806	rra(i,j,k,im,is)= rr(i,j,k,im)+(td(i,j,k,im) &
2807	rra(i,j,k+1,im,is)+tt(i,j,k,im)rxa(i,j,k+1,im,is))*denm
2808	rxa(i,j,k,im,is)= rs(i,j,k,im)+ts(i,j,k,im) &
2809	rxa(i,j,k+1,im,is)denm
2810	enddo
2811	enddo
2812	enddo
2813
2814	20 continue
2815
2816	!-----integration over eight sky situations.
2817	! ih, im, is denotes high, middle and low cloud groups.
2818
2819	do 100 ih=itm,2
2820
2821	!-----clear portion
2822
2823	if(ih.eq.1) then
2824	do j=1,n
2825	do i=1,m
2826	ch(i,j)=1.0-cc(i,j,1)
2827	enddo
2828	enddo
2829
2830	else
2831
2832	!-----cloudy portion
2833
2834	do j=1,n
2835	do i=1,m
2836	ch(i,j)=cc(i,j,1)
2837	enddo
2838	enddo
2839
2840	endif
2841
2842	do 100 im=itm,2
2843
2844	!-----clear portion
2845
2846	if(im.eq.1) then
2847
2848	do j=1,n
2849	do i=1,m
2850	cm(i,j)=ch(i,j)*(1.0-cc(i,j,2))
2851	enddo
2852	enddo
2853
2854	else
2855
2856	!-----cloudy portion
2857
2858	do j=1,n
2859	do i=1,m
2860	cm(i,j)=ch(i,j)*cc(i,j,2)
2861	enddo
2862	enddo
2863
2864	endif
2865
2866	do 100 is=itm,2
2867
2868	!-----clear portion
2869
2870	if(is.eq.1) then
2871
2872	do j=1,n
2873	do i=1,m
2874	ct(i,j)=cm(i,j)*(1.0-cc(i,j,3))
2875	enddo
2876	enddo
2877
2878	else
2879
2880	!-----cloudy portion
2881
2882	do j=1,n
2883	do i=1,m
2884	ct(i,j)=cm(i,j)*cc(i,j,3)
2885	enddo
2886	enddo
2887
2888	endif
2889
2890	!-----add one layer at a time, going down.
2891
2892	do j= 1, n
2893	do i= 1, m
2894	do k= icb(i,j), np
2895	denm = ts(i,j,k,is)/( 1.-rsa(i,j,k-1,ih,im)*rs(i,j,k,is) )
2896	tda(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*td(i,j,k,is)
2897	tta(i,j,k,ih,im)= tda(i,j,k-1,ih,im)*tt(i,j,k,is) &
2898	+(tda(i,j,k-1,ih,im)*rr(i,j,k,is) &
2899	rsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))denm
2900	rsa(i,j,k,ih,im)= rs(i,j,k,is)+ts(i,j,k,is) &
2901	rsa(i,j,k-1,ih,im)denm
2902	enddo
2903	enddo
2904	enddo
2905
2906	!-----add one layer at a time, going up.
2907
2908	do j= 1, n
2909	do i= 1, m
2910	do k= ict(i,j)-1,1,-1
2911	denm =ts(i,j,k,ih)/(1.-rs(i,j,k,ih)*rxa(i,j,k+1,im,is))
2912	rra(i,j,k,im,is)= rr(i,j,k,ih)+(td(i,j,k,ih) &
2913	rra(i,j,k+1,im,is)+tt(i,j,k,ih)rxa(i,j,k+1,im,is))*denm
2914	rxa(i,j,k,im,is)= rs(i,j,k,ih)+ts(i,j,k,ih) &
2915	rxa(i,j,k+1,im,is)denm
2916	enddo
2917	enddo
2918	enddo
2919
2920	!-----compute fluxes following eq (5) of Chou (1992)
2921
2922	! fdndir is the direct downward flux
2923	! fdndif is the diffuse downward flux
2924	! fupdif is the diffuse upward flux
2925
2926	do k=2,np+1
2927	do j=1, n
2928	do i=1, m
2929	denm= 1./(1.- rxa(i,j,k,im,is)*rsa(i,j,k-1,ih,im))
2930	fdndir(i,j)= tda(i,j,k-1,ih,im)
2931	xx = tda(i,j,k-1,ih,im)*rra(i,j,k,im,is)
2932	fdndif(i,j)= (xxrsa(i,j,k-1,ih,im)+tta(i,j,k-1,ih,im))denm
2933	fupdif= (xx+tta(i,j,k-1,ih,im)rxa(i,j,k,im,is))denm
2934	flxdn(i,j,k)=fdndir(i,j)+fdndif(i,j)-fupdif
2935	flxdnu(i,j,k)=-fupdif
2936	flxdnd(i,j,k)=fdndir(i,j)+fdndif(i,j)
2937	enddo
2938	enddo
2939	enddo
2940
2941	do j=1, n
2942	do i=1, m
2943	flxdn(i,j,1)=1.0-rra(i,j,1,im,is)
2944	flxdnu(i,j,1)=-rra(i,j,1,im,is)
2945	flxdnd(i,j,1)=1.0
2946	enddo
2947	enddo
2948
2949	!-----summation of fluxes over all (eight) sky situations.
2950
2951	do k=1,np+1
2952	do j=1,n
2953	do i=1,m
2954	if(ih.eq.1 .and. im.eq.1 .and. is.eq.1) then
2955	fclr(i,j,k)=flxdn(i,j,k)
2956	endif
2957	fall(i,j,k)=fall(i,j,k)+flxdn(i,j,k)*ct(i,j)
2958	fallu(i,j,k)=fallu(i,j,k)+flxdnu(i,j,k)*ct(i,j)
2959	falld(i,j,k)=falld(i,j,k)+flxdnd(i,j,k)*ct(i,j)
2960	enddo
2961	enddo
2962	enddo
2963
2964	do j=1,n
2965	do i=1,m
2966	fsdir(i,j)=fsdir(i,j)+fdndir(i,j)*ct(i,j)
2967	fsdif(i,j)=fsdif(i,j)+fdndif(i,j)*ct(i,j)
2968	enddo
2969	enddo
2970
2971	100 continue
2972
2973	end subroutine cldflx
2974
2975	!*****************************************************************
2976
2977	subroutine flxco2(m,n,np,swc,swh,csm,df)
2978
2979	!*****************************************************************
2980
2981	!-----compute the reduction of clear-sky downward solar flux
2982	! due to co2 absorption.
2983
2984	implicit none
2985
2986	!-----input parameters
2987
2988	integer m,n,np
2989	real csm(m,n),swc(m,n,np+1),swh(m,n,np+1),cah(22,19)
2990
2991	!-----output (undated) parameter
2992
2993	real df(m,n,np+1)
2994
2995	!-----temporary array
2996
2997	integer i,j,k,ic,iw
2998	real xx,clog,wlog,dc,dw,x1,x2,y2
2999
3000	!********************************************************************
3001	!-----include co2 look-up table
3002
3003	data ((cah(i,j),i=1,22),j= 1, 5)/ &
3004	0.9923, 0.9922, 0.9921, 0.9920, 0.9916, 0.9910, 0.9899, 0.9882, &
3005	0.9856, 0.9818, 0.9761, 0.9678, 0.9558, 0.9395, 0.9188, 0.8945, &
3006	0.8675, 0.8376, 0.8029, 0.7621, 0.7154, 0.6647, 0.9876, 0.9876, &
3007	0.9875, 0.9873, 0.9870, 0.9864, 0.9854, 0.9837, 0.9811, 0.9773, &
3008	0.9718, 0.9636, 0.9518, 0.9358, 0.9153, 0.8913, 0.8647, 0.8350, &
3009	0.8005, 0.7599, 0.7133, 0.6627, 0.9808, 0.9807, 0.9806, 0.9805, &
3010	0.9802, 0.9796, 0.9786, 0.9769, 0.9744, 0.9707, 0.9653, 0.9573, &
3011	0.9459, 0.9302, 0.9102, 0.8866, 0.8604, 0.8311, 0.7969, 0.7565, &
3012	0.7101, 0.6596, 0.9708, 0.9708, 0.9707, 0.9705, 0.9702, 0.9697, &
3013	0.9687, 0.9671, 0.9647, 0.9612, 0.9560, 0.9483, 0.9372, 0.9221, &
3014	0.9027, 0.8798, 0.8542, 0.8253, 0.7916, 0.7515, 0.7054, 0.6551, &
3015	0.9568, 0.9568, 0.9567, 0.9565, 0.9562, 0.9557, 0.9548, 0.9533, &
3016	0.9510, 0.9477, 0.9428, 0.9355, 0.9250, 0.9106, 0.8921, 0.8700, &
3017	0.8452, 0.8171, 0.7839, 0.7443, 0.6986, 0.6486/
3018
3019	data ((cah(i,j),i=1,22),j= 6,10)/ &
3020	0.9377, 0.9377, 0.9376, 0.9375, 0.9372, 0.9367, 0.9359, 0.9345, &
3021	0.9324, 0.9294, 0.9248, 0.9181, 0.9083, 0.8948, 0.8774, 0.8565, &
3022	0.8328, 0.8055, 0.7731, 0.7342, 0.6890, 0.6395, 0.9126, 0.9126, &
3023	0.9125, 0.9124, 0.9121, 0.9117, 0.9110, 0.9098, 0.9079, 0.9052, &
3024	0.9012, 0.8951, 0.8862, 0.8739, 0.8579, 0.8385, 0.8161, 0.7900, &
3025	0.7585, 0.7205, 0.6760, 0.6270, 0.8809, 0.8809, 0.8808, 0.8807, &
3026	0.8805, 0.8802, 0.8796, 0.8786, 0.8770, 0.8747, 0.8712, 0.8659, &
3027	0.8582, 0.8473, 0.8329, 0.8153, 0.7945, 0.7697, 0.7394, 0.7024, &
3028	0.6588, 0.6105, 0.8427, 0.8427, 0.8427, 0.8426, 0.8424, 0.8422, &
3029	0.8417, 0.8409, 0.8397, 0.8378, 0.8350, 0.8306, 0.8241, 0.8148, &
3030	0.8023, 0.7866, 0.7676, 0.7444, 0.7154, 0.6796, 0.6370, 0.5897, &
3031	0.7990, 0.7990, 0.7990, 0.7989, 0.7988, 0.7987, 0.7983, 0.7978, &
3032	0.7969, 0.7955, 0.7933, 0.7899, 0.7846, 0.7769, 0.7664, 0.7528, &
3033	0.7357, 0.7141, 0.6866, 0.6520, 0.6108, 0.5646/
3034
3035	data ((cah(i,j),i=1,22),j=11,15)/ &
3036	0.7515, 0.7515, 0.7515, 0.7515, 0.7514, 0.7513, 0.7511, 0.7507, &
3037	0.7501, 0.7491, 0.7476, 0.7450, 0.7409, 0.7347, 0.7261, 0.7144, &
3038	0.6992, 0.6793, 0.6533, 0.6203, 0.5805, 0.5357, 0.7020, 0.7020, &
3039	0.7020, 0.7019, 0.7019, 0.7018, 0.7017, 0.7015, 0.7011, 0.7005, &
3040	0.6993, 0.6974, 0.6943, 0.6894, 0.6823, 0.6723, 0.6588, 0.6406, &
3041	0.6161, 0.5847, 0.5466, 0.5034, 0.6518, 0.6518, 0.6518, 0.6518, &
3042	0.6518, 0.6517, 0.6517, 0.6515, 0.6513, 0.6508, 0.6500, 0.6485, &
3043	0.6459, 0.6419, 0.6359, 0.6273, 0.6151, 0.5983, 0.5755, 0.5458, &
3044	0.5095, 0.4681, 0.6017, 0.6017, 0.6017, 0.6017, 0.6016, 0.6016, &
3045	0.6016, 0.6015, 0.6013, 0.6009, 0.6002, 0.5989, 0.5967, 0.5932, &
3046	0.5879, 0.5801, 0.5691, 0.5535, 0.5322, 0.5043, 0.4700, 0.4308, &
3047	0.5518, 0.5518, 0.5518, 0.5518, 0.5518, 0.5518, 0.5517, 0.5516, &
3048	0.5514, 0.5511, 0.5505, 0.5493, 0.5473, 0.5441, 0.5393, 0.5322, &
3049	0.5220, 0.5076, 0.4878, 0.4617, 0.4297, 0.3929/
3050
3051	data ((cah(i,j),i=1,22),j=16,19)/ &
3052	0.5031, 0.5031, 0.5031, 0.5031, 0.5031, 0.5030, 0.5030, 0.5029, &
3053	0.5028, 0.5025, 0.5019, 0.5008, 0.4990, 0.4960, 0.4916, 0.4850, &
3054	0.4757, 0.4624, 0.4441, 0.4201, 0.3904, 0.3564, 0.4565, 0.4565, &
3055	0.4565, 0.4564, 0.4564, 0.4564, 0.4564, 0.4563, 0.4562, 0.4559, &
3056	0.4553, 0.4544, 0.4527, 0.4500, 0.4460, 0.4400, 0.4315, 0.4194, &
3057	0.4028, 0.3809, 0.3538, 0.3227, 0.4122, 0.4122, 0.4122, 0.4122, &
3058	0.4122, 0.4122, 0.4122, 0.4121, 0.4120, 0.4117, 0.4112, 0.4104, &
3059	0.4089, 0.4065, 0.4029, 0.3976, 0.3900, 0.3792, 0.3643, 0.3447, &
3060	0.3203, 0.2923, 0.3696, 0.3696, 0.3696, 0.3696, 0.3696, 0.3696, &
3061	0.3695, 0.3695, 0.3694, 0.3691, 0.3687, 0.3680, 0.3667, 0.3647, &
3062	0.3615, 0.3570, 0.3504, 0.3409, 0.3279, 0.3106, 0.2892, 0.2642/
3063
3064	!********************************************************************
3065	!-----table look-up for the reduction of clear-sky solar
3066	! radiation due to co2. The fraction 0.0343 is the
3067	! extraterrestrial solar flux in the co2 bands.
3068
3069	do k= 2, np+1
3070	do j= 1, n
3071	do i= 1, m
3072	xx=1./.3
3073	clog=log10(swc(i,j,k)*csm(i,j))
3074	wlog=log10(swh(i,j,k)*csm(i,j))
3075	ic=int( (clog+3.15)*xx+1.)
3076	iw=int( (wlog+4.15)*xx+1.)
3077	if(ic.lt.2)ic=2
3078	if(iw.lt.2)iw=2
3079	if(ic.gt.22)ic=22
3080	if(iw.gt.19)iw=19
3081	dc=clog-float(ic-2)*.3+3.
3082	dw=wlog-float(iw-2)*.3+4.
3083	x1=cah(1,iw-1)+(cah(1,iw)-cah(1,iw-1))xxdw
3084	x2=cah(ic-1,iw-1)+(cah(ic-1,iw)-cah(ic-1,iw-1))xxdw
3085	y2=x2+(cah(ic,iw-1)-cah(ic-1,iw-1))xxdc
3086	if (x1.lt.y2) x1=y2
3087	df(i,j,k)=df(i,j,k)+0.0343*(x1-y2)
3088	enddo
3089	enddo
3090	enddo
3091
3092	end subroutine flxco2
3093
3094	!*****************************************************************
3095
3096	subroutine o3prof (np, pres, ozone, its, ite, kts, kte, p, o3)
3097
3098	!*****************************************************************
3099	implicit none
3100	!*****************************************************************
3101	!
3102	integer iprof,m,np,its,ite,kts,kte
3103	integer i,k,ko,kk
3104	real pres(np),ozone(np)
3105	real p(its:ite,kts:kte),o3(its:ite,kts:kte)
3106
3107	! Statement function
3108
3109	real Linear, x1, y1, x2, y2, x
3110	Linear(x1, y1, x2, y2, x) = &
3111	(y1 * (x2 - x) + y2 * (x - x1)) / (x2 - x1)
3112	!
3113	do k = 1,np
3114	pres(k) = alog(pres(k))
3115	enddo
3116	do k = kts,kte
3117	do i = its, ite
3118	p(i,k) = alog(p(i,k))
3119	end do
3120	end do
3121
3122	! assume the pressure at model top is greater than pres(1)
3123	! if it is not, this part needs to change
3124
3125	do i = its, ite
3126	ko = 1
3127	do k = kts+1, kte
3128	do while (ko .lt. np .and. p(i,k) .gt. pres(ko))
3129	ko = ko + 1
3130	end do
3131	o3(i,k) = Linear (pres(ko), ozone(ko), &
3132	pres(ko-1), ozone(ko-1), &
3133	p(i,k))
3134	ko = ko - 1
3135	end do
3136	end do
3137
3138	! calculate top lay O3
3139
3140	do i = its, ite
3141	ko = 1
3142	k = kts
3143	do while (ko .le. np .and. p(i,k) .gt. pres(ko))
3144	ko = ko + 1
3145	end do
3146	IF (ko-1 .le. 1) then
3147	O3(i,k)=ozone(k)
3148	ELSE
3149	O3(i,k)=0.
3150	do kk=ko-2,1,-1
3151	O3(i,k)=O3(i,k)+ozone(kk)*(pres(kk+1)-pres(kk))
3152	enddo
3153	O3(i,k)=O3(i,k)/(pres(ko-1)-pres(1))
3154	ENDIF
3155	! print*,'O3=',i,k,ko,O3(i,k),p(i,k),ko,pres(ko),pres(ko-1)
3156	end do
3157
3158	end subroutine o3prof
3159
3160	!-----------------------------------------
3161	SUBROUTINE gsfc_swinit(cen_lat, allowed_to_read)
3162
3163	REAL, INTENT(IN ) :: cen_lat
3164	LOGICAL, INTENT(IN ) :: allowed_to_read
3165
3166	center_lat=cen_lat
3167
3168	END SUBROUTINE gsfc_swinit
3169
3170
3171	END MODULE module_ra_gsfcsw

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