source: trunk/MagicSoft/Simulation/Detector/ReflectorII/attenu.f@ 1206

Last change on this file since 1206 was 725, checked in by harald, 25 years ago
Ciro and Denis changed the reflector to read in the changed MMCS output (single file version). They made a big change of all the code. That is the reason why I put here a new reflector directory in the repository. This is the future development point for reflector. Until the next drastic change. WARNING: Reflector here is only proved on OSF!!!
File size: 22.1 KB
Line 
1*********************************************************************
2* *
3* Atmospheric Absorption for Rayleigh, Mie and Ozone. *
4* *
5* Created: May-98 *
6* Author: Aitor Ibarra Ibaibarriaga *
7* Jose Carlos Gonzalez *
8* *
9*********************************************************************
10
11c @T \newpage
12
13
14c @section Source code of {\tt attenu.f}
15
16* @text
17* Copyright $\copyright$ 1998, Aitor Ibarra Ibaibarriaga
18* @endtext
19c @code
20
21 SUBROUTINE attenu(wavelength, height, theta, tr_atmos)
22
23C----------------------------------------------------------------------C
24C RHO (DENSITY) F(UNCTION) C
25C C
26C CALCULATES DENSITY (G/CM**3) OF ATMOSPHERE DEPENDING ON HEIGHT (CM) C
27C (US STANDARD ATMOSPHERE) C
28C THIS FUNCTION IS CALLED FROM ININKG, UPDATE, CERENE, CERENH C
29C ARGUMENT: C
30C ARG = HEIGHT IN CM C
31C----------------------------------------------------------------------C
32
33 COMMON /ATMOS/ AATM,BATM,CATM,LAHG,RHOF,LONG,OZ_ABI,AE_ABI
34 DOUBLE PRECISION AATM(5),BATM(5),CATM(5),LAHG(5),RHOF(5),Lm(12)
35 DOUBLE PRECISION H,RT, m,OZ_ABI(48,12),AE_ABI(28,12)
36 DOUBLE PRECISION XR, TOT_OZ, TOT_AE, T_Ray,T_Mie, T_Oz,
37 + RHO_TOT, RHO_FI, RHOFP
38
39 DOUBLE PRECISION Rcos2, Rsin2
40 DOUBLE PRECISION x1, x2, x3, x4
41 DOUBLE PRECISION e1, e2, e3, e4
42
43 REAL wavelength, height, theta, tr_atmos
44 real trr, trm, tro
45 REAL LONG(12)
46c fs: define obervation level
47 double precision obslev
48 INTEGER I,CON_OZ,CON_MI J, ROW
49
50 DATA OZ_ABI /
51 + 0.2880000D+00,0.5405000D+00,0.7775000D+00,0.1009000D+01,
52 + 0.1241500D+01,0.1480500D+01,0.1750500D+01,0.2085000D+01,
53 + 0.2514500D+01,0.3087500D+01,0.3864500D+01,0.4817500D+01,
54 + 0.5847500D+01,0.6917500D+01,0.8052500D+01,0.9287499D+01,
55 + 0.1068750D+02,0.1231250D+02,0.1415750D+02,0.1617750D+02,
56 + 0.1827250D+02,0.2034750D+02,0.2232750D+02,0.2414750D+02,
57 + 0.2575750D+02,0.2715250D+02,0.2836750D+02,0.2941100D+02,
58 + 0.3031000D+02,0.3109250D+02,0.3176300D+02,0.3232750D+02,
59 + 0.3281200D+02,0.3323200D+02,0.3358350D+02,0.3387750D+02,
60 + 0.3412650D+02,0.3434000D+02,0.3451900D+02,0.3466250D+02,
61 + 0.3477480D+02,0.3486355D+02,0.3493355D+02,0.3498775D+02,
62 + 0.3503010D+02,0.3506360D+02,0.3509020D+02,0.3511185D+02,
63 + 0.2740000D-01,0.5140000D-01,0.7395000D-01,0.9600000D-01,
64 + 0.1181500D+00,0.1409000D+00,0.1666000D+00,0.1984500D+00,
65 + 0.2393500D+00,0.2939500D+00,0.3679500D+00,0.4589500D+00,
66 + 0.5573000D+00,0.6593000D+00,0.7673000D+00,0.8848000D+00,
67 + 0.1017800D+01,0.1172300D+01,0.1348300D+01,0.1540800D+01,
68 + 0.1740300D+01,0.1937800D+01,0.2126300D+01,0.2299800D+01,
69 + 0.2453300D+01,0.2586300D+01,0.2702300D+01,0.2801900D+01,
70 + 0.2887550D+01,0.2962050D+01,0.3025900D+01,0.3079700D+01,
71 + 0.3125850D+01,0.3165850D+01,0.3199350D+01,0.3227400D+01,
72 + 0.3251150D+01,0.3271500D+01,0.3288600D+01,0.3302300D+01,
73 + 0.3312995D+01,0.3321445D+01,0.3328110D+01,0.3333270D+01,
74 + 0.3337305D+01,0.3340500D+01,0.3343035D+01,0.1334510D+01,
75 + 0.2435000D-02,0.4570000D-02,0.6575000D-02,0.8535000D-02,
76 + 0.1050500D-01,0.1253000D-01,0.1481500D-01,0.1764500D-01,
77 + 0.2128000D-01,0.2613500D-01,0.3272000D-01,0.4081000D-01,
78 + 0.4957000D-01,0.5866000D-01,0.6827000D-01,0.7875500D-01,
79 + 0.9065500D-01,0.1044050D+00,0.1200050D+00,0.1371050D+00,
80 + 0.1548550D+00,0.1724050D+00,0.1891550D+00,0.2045550D+00,
81 + 0.2182050D+00,0.2300550D+00,0.2403600D+00,0.2492200D+00,
82 + 0.2568350D+00,0.2634550D+00,0.2691300D+00,0.2739150D+00,
83 + 0.2780200D+00,0.2815750D+00,0.2845500D+00,0.2870400D+00,
84 + 0.2891500D+00,0.2909600D+00,0.2924750D+00,0.2936900D+00,
85 + 0.2946425D+00,0.2953940D+00,0.2959865D+00,0.2964455D+00,
86 + 0.2968045D+00,0.2970885D+00,0.2973140D+00,0.2974975D+00,
87 + 0.1740000D-03,0.3265000D-03,0.4695000D-03,0.6090000D-03,
88 + 0.7495000D-03,0.8940000D-03,0.1057000D-02,0.1259000D-02,
89 + 0.1518000D-02,0.1863500D-02,0.2332500D-02,0.2909000D-02,
90 + 0.3533000D-02,0.4180500D-02,0.4865000D-02,0.5610500D-02,
91 + 0.6455500D-02,0.7435000D-02,0.8550000D-02,0.9770000D-02,
92 + 0.1103500D-01,0.1229000D-01,0.1348500D-01,0.1458000D-01,
93 + 0.1555100D-01,0.1639550D-01,0.1713150D-01,0.1776300D-01,
94 + 0.1830600D-01,0.1877800D-01,0.1918200D-01,0.1952250D-01,
95 + 0.1981500D-01,0.2006850D-01,0.2028050D-01,0.2045801D-01,
96 + 0.2060851D-01,0.2073750D-01,0.2084566D-01,0.2093241D-01,
97 + 0.2100026D-01,0.2105381D-01,0.2109606D-01,0.2112876D-01,
98 + 0.2115431D-01,0.2117456D-01,0.2119066D-01,0.2120376D-01,
99 + 0.4885000D-05,0.9170000D-05,0.1319500D-04,0.1713000D-04,
100 + 0.2108000D-04,0.2513500D-04,0.2971500D-04,0.3539500D-04,
101 + 0.4268500D-04,0.5242500D-04,0.6562500D-04,0.8182500D-04,
102 + 0.9937500D-04,0.1175750D-03,0.1368250D-03,0.1578250D-03,
103 + 0.1816250D-03,0.2091750D-03,0.2404750D-03,0.2747750D-03,
104 + 0.3103250D-03,0.3454750D-03,0.3790250D-03,0.4098750D-03,
105 + 0.4372250D-03,0.4609750D-03,0.4816750D-03,0.4994750D-03,
106 + 0.5147750D-03,0.5280750D-03,0.5394750D-03,0.5490700D-03,
107 + 0.5572950D-03,0.5644250D-03,0.5703950D-03,0.5753899D-03,
108 + 0.5796200D-03,0.5832500D-03,0.5862950D-03,0.5887350D-03,
109 + 0.5906400D-03,0.5921450D-03,0.5933350D-03,0.5942565D-03,
110 + 0.5949755D-03,0.5955440D-03,0.5959955D-03,0.5963635D-03,
111 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
112 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
113 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
114 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
115 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
116 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
117 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
118 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
119 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
120 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
121 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
122 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
123 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
124 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
125 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
126 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
127 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
128 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
129 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
130 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
131 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
132 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
133 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
134 + 0.0000000D+00,0.0000000D+00,0.0000000D+00,0.0000000D+00,
135 + 0.9525000D-05,0.1785500D-04,0.2567500D-04,0.3332000D-04,
136 + 0.4100000D-04,0.4889000D-04,0.5779500D-04,0.6881000D-04,
137 + 0.8296000D-04,0.1018600D-03,0.1275100D-03,0.1590600D-03,
138 + 0.1932100D-03,0.2286100D-03,0.2660100D-03,0.3067600D-03,
139 + 0.3529600D-03,0.4065100D-03,0.4674100D-03,0.5341100D-03,
140 + 0.6032600D-03,0.6717100D-03,0.7370100D-03,0.7970100D-03,
141 + 0.8501600D-03,0.8963600D-03,0.9366100D-03,0.9711101D-03,
142 + 0.1000810D-02,0.1026660D-02,0.1048810D-02,0.1067460D-02,
143 + 0.1083460D-02,0.1097310D-02,0.1108910D-02,0.1118640D-02,
144 + 0.1126865D-02,0.1133915D-02,0.1139830D-02,0.1144570D-02,
145 + 0.1148275D-02,0.1151200D-02,0.1153510D-02,0.1155300D-02,
146 + 0.1156700D-02,0.1162205D-02,0.1170990D-02,0.1178145D-02,
147 + 0.9360000D-04,0.1757000D-03,0.2528000D-03,0.3281500D-03,
148 + 0.4038500D-03,0.4816500D-03,0.5694500D-03,0.6784000D-03,
149 + 0.8184000D-03,0.1004900D-02,0.1257900D-02,0.1568900D-02,
150 + 0.1905400D-02,0.2254400D-02,0.2623400D-02,0.3025400D-02,
151 + 0.3480900D-02,0.4008900D-02,0.4609400D-02,0.5266900D-02,
152 + 0.5948400D-02,0.6622900D-02,0.7266400D-02,0.7857900D-02,
153 + 0.8381900D-02,0.8836901D-02,0.9233401D-02,0.9573901D-02,
154 + 0.9866901D-02,0.1012140D-01,0.1033940D-01,0.1052340D-01,
155 + 0.1068140D-01,0.1081840D-01,0.1093290D-01,0.1102855D-01,
156 + 0.1110965D-01,0.1117920D-01,0.1123750D-01,0.1128425D-01,
157 + 0.1132085D-01,0.1134975D-01,0.1137255D-01,0.1139020D-01,
158 + 0.1140400D-01,0.1141492D-01,0.1142358D-01,0.1143063D-01,
159 + 0.2500000D-03,0.4690000D-03,0.6745000D-03,0.8755000D-03,
160 + 0.1077500D-02,0.1285000D-02,0.1519500D-02,0.1810000D-02,
161 + 0.2182500D-02,0.2679500D-02,0.3353500D-02,0.4182000D-02,
162 + 0.5079000D-02,0.6010000D-02,0.6994000D-02,0.8064000D-02,
163 + 0.9279000D-02,0.1068900D-01,0.1228900D-01,0.1403900D-01,
164 + 0.1585400D-01,0.1765400D-01,0.1937400D-01,0.2095400D-01,
165 + 0.2235400D-01,0.2356900D-01,0.2462600D-01,0.2553350D-01,
166 + 0.2631400D-01,0.2699250D-01,0.2757350D-01,0.2806300D-01,
167 + 0.2848350D-01,0.2884800D-01,0.2915300D-01,0.2940850D-01,
168 + 0.2962500D-01,0.2981050D-01,0.2996600D-01,0.3009050D-01,
169 + 0.3018780D-01,0.3026480D-01,0.3032550D-01,0.3037250D-01,
170 + 0.3040925D-01,0.3043835D-01,0.3046145D-01,0.3048025D-01,
171 + 0.3585000D-03,0.6725000D-03,0.9675000D-03,0.1256000D-02,
172 + 0.1545500D-02,0.1843000D-02,0.2179000D-02,0.2595500D-02,
173 + 0.3130000D-02,0.3843500D-02,0.4813500D-02,0.6003500D-02,
174 + 0.7288500D-02,0.8623499D-02,0.1003850D-01,0.1157850D-01,
175 + 0.1331850D-01,0.1533350D-01,0.1762850D-01,0.2014350D-01,
176 + 0.2274850D-01,0.2532850D-01,0.2779350D-01,0.3005850D-01,
177 + 0.3206350D-01,0.3380350D-01,0.3531851D-01,0.3661850D-01,
178 + 0.3773851D-01,0.3871351D-01,0.3954751D-01,0.4025051D-01,
179 + 0.4085401D-01,0.4137701D-01,0.4181501D-01,0.4218151D-01,
180 + 0.4249151D-01,0.4275751D-01,0.4298101D-01,0.4316001D-01,
181 + 0.4330001D-01,0.4341061D-01,0.4349771D-01,0.4356516D-01,
182 + 0.4361791D-01,0.4365961D-01,0.4369271D-01,0.4371971D-01,
183 + 0.1685000D-03,0.3160000D-03,0.4545000D-03,0.5900000D-03,
184 + 0.7260000D-03,0.8655000D-03,0.1023000D-02,0.1218500D-02,
185 + 0.1469500D-02,0.1804500D-02,0.2259000D-02,0.2817500D-02,
186 + 0.3422000D-02,0.4049500D-02,0.4712999D-02,0.5434999D-02,
187 + 0.6252999D-02,0.7203000D-02,0.8283000D-02,0.9462999D-02,
188 + 0.1068800D-01,0.1190300D-01,0.1306300D-01,0.1412800D-01,
189 + 0.1507000D-01,0.1588850D-01,0.1660150D-01,0.1721300D-01,
190 + 0.1773900D-01,0.1819650D-01,0.1858850D-01,0.1891850D-01,
191 + 0.1920150D-01,0.1944700D-01,0.1965250D-01,0.1982450D-01,
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193 + 0.2034985D-01,0.2040175D-01,0.2044265D-01,0.2047435D-01,
194 + 0.2049915D-01,0.2051875D-01,0.2053430D-01,0.2054695D-01 /
195
196 DATA AE_ABI /
197 + 0.3645000E-01,0.5211000E-01,0.5913000E-01,0.6203000E-01,
198 + 0.6304000E-01,0.6340450E-01,0.6353275E-01,0.6358405E-01,
199 + 0.6361780E-01,0.6364885E-01,0.6367990E-01,0.6371365E-01,
200 + 0.6375955E-01,0.6383380E-01,0.6392965E-01,0.6403360E-01,
201 + 0.6414810E-01,0.6426660E-01,0.6438010E-01,0.6448960E-01,
202 + 0.6459510E-01,0.6468170E-01,0.6474110E-01,0.6478295E-01,
203 + 0.6481670E-01,0.6484775E-01,0.6487610E-01,0.6490240E-01,
204 + 0.3510000E-01,0.5018000E-01,0.5694000E-01,0.5973500E-01,
205 + 0.6071000E-01,0.6106100E-01,0.6118450E-01,0.6123390E-01,
206 + 0.6126640E-01,0.6129630E-01,0.6132620E-01,0.6135870E-01,
207 + 0.6140290E-01,0.6147440E-01,0.6156670E-01,0.6166680E-01,
208 + 0.6177730E-01,0.6189180E-01,0.6200130E-01,0.6210680E-01,
209 + 0.6220820E-01,0.6229140E-01,0.6234860E-01,0.6238890E-01,
210 + 0.6242140E-01,0.6245130E-01,0.6247860E-01,0.6250395E-01,
211 + 0.3375000E-01,0.4825000E-01,0.5475000E-01,0.5744000E-01,
212 + 0.5838000E-01,0.5871750E-01,0.5883625E-01,0.5888375E-01,
213 + 0.5891500E-01,0.5894375E-01,0.5897250E-01,0.5900375E-01,
214 + 0.5904625E-01,0.5911500E-01,0.5920375E-01,0.5930000E-01,
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217 + 0.6002550E-01,0.6005425E-01,0.6008050E-01,0.6010490E-01,
218 + 0.3240000E-01,0.4632000E-01,0.5256000E-01,0.5514000E-01,
219 + 0.5604000E-01,0.5636400E-01,0.5647800E-01,0.5652360E-01,
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231 + 0.5761900E-01,0.5764660E-01,0.5767180E-01,0.5769520E-01,
232 + 0.3105000E-01,0.4439000E-01,0.5037000E-01,0.5284500E-01,
233 + 0.5371000E-01,0.5402050E-01,0.5412975E-01,0.5417345E-01,
234 + 0.5420220E-01,0.5422865E-01,0.5425510E-01,0.5428385E-01,
235 + 0.5432295E-01,0.5438620E-01,0.5446785E-01,0.5455640E-01,
236 + 0.5465390E-01,0.5475485E-01,0.5485145E-01,0.5494460E-01,
237 + 0.5503430E-01,0.5510790E-01,0.5515850E-01,0.5519415E-01,
238 + 0.5522290E-01,0.5524935E-01,0.5527350E-01,0.5529590E-01,
239 + 0.2700000E-01,0.3860000E-01,0.4380000E-01,0.4595000E-01,
240 + 0.4670000E-01,0.4697000E-01,0.4706500E-01,0.4710300E-01,
241 + 0.4712800E-01,0.4715100E-01,0.4717400E-01,0.4719900E-01,
242 + 0.4723300E-01,0.4728800E-01,0.4735900E-01,0.4743600E-01,
243 + 0.4752100E-01,0.4760900E-01,0.4769300E-01,0.4777400E-01,
244 + 0.4785200E-01,0.4791600E-01,0.4796000E-01,0.4799100E-01,
245 + 0.4801600E-01,0.4803900E-01,0.4806000E-01,0.4807950E-01,
246 + 0.2430000E-01,0.3474000E-01,0.3942000E-01,0.4135500E-01,
247 + 0.4203000E-01,0.4227300E-01,0.4235850E-01,0.4239270E-01,
248 + 0.4241520E-01,0.4243590E-01,0.4245660E-01,0.4247910E-01,
249 + 0.4250970E-01,0.4255920E-01,0.4262310E-01,0.4269240E-01,
250 + 0.4276890E-01,0.4284810E-01,0.4292370E-01,0.4299660E-01,
251 + 0.4306680E-01,0.4312440E-01,0.4316400E-01,0.4319190E-01,
252 + 0.4321440E-01,0.4323510E-01,0.4325400E-01,0.4327155E-01,
253 + 0.2255000E-01,0.3225500E-01,0.3659500E-01,0.3838900E-01,
254 + 0.3901500E-01,0.3924050E-01,0.3931985E-01,0.3935155E-01,
255 + 0.3937240E-01,0.3939160E-01,0.3941080E-01,0.3943165E-01,
256 + 0.3946005E-01,0.3950600E-01,0.3956530E-01,0.3962960E-01,
257 + 0.3970055E-01,0.3977400E-01,0.3984415E-01,0.3991180E-01,
258 + 0.3997695E-01,0.4003040E-01,0.4006715E-01,0.4009305E-01,
259 + 0.4011390E-01,0.4013310E-01,0.4015065E-01,0.4016695E-01,
260 + 0.2130000E-01,0.3044500E-01,0.3455500E-01,0.3625450E-01,
261 + 0.3684700E-01,0.3706050E-01,0.3713575E-01,0.3716575E-01,
262 + 0.3718550E-01,0.3720370E-01,0.3722190E-01,0.3724165E-01,
263 + 0.3726850E-01,0.3731195E-01,0.3736805E-01,0.3742890E-01,
264 + 0.3749605E-01,0.3756555E-01,0.3763190E-01,0.3769590E-01,
265 + 0.3775750E-01,0.3780805E-01,0.3784280E-01,0.3786725E-01,
266 + 0.3788700E-01,0.3790520E-01,0.3792180E-01,0.3793720E-01,
267 + 0.2025000E-01,0.2895000E-01,0.3285000E-01,0.3446250E-01,
268 + 0.3502500E-01,0.3522750E-01,0.3529875E-01,0.3532725E-01,
269 + 0.3534600E-01,0.3536325E-01,0.3538050E-01,0.3539925E-01,
270 + 0.3542475E-01,0.3546600E-01,0.3551925E-01,0.3557700E-01,
271 + 0.3564075E-01,0.3570675E-01,0.3576975E-01,0.3583050E-01,
272 + 0.3588900E-01,0.3593700E-01,0.3597000E-01,0.3599325E-01,
273 + 0.3601200E-01,0.3602925E-01,0.3604500E-01,0.3605960E-01,
274 + 0.1920000E-01,0.2745500E-01,0.3114500E-01,0.3267050E-01,
275 + 0.3320300E-01,0.3339470E-01,0.3346215E-01,0.3348915E-01,
276 + 0.3350690E-01,0.3352320E-01,0.3353950E-01,0.3355725E-01,
277 + 0.3358140E-01,0.3362045E-01,0.3367085E-01,0.3372550E-01,
278 + 0.3378585E-01,0.3384835E-01,0.3390800E-01,0.3396550E-01,
279 + 0.3402090E-01,0.3406635E-01,0.3409760E-01,0.3411965E-01,
280 + 0.3413740E-01,0.3415370E-01,0.3416860E-01,0.3418245E-01 /
281
282 DATA BATM / 1222.6562D0,1144.9069D0,1305.5948D0,540.1778D0,0.D0 /
283 DATA CATM / 994186.38D0,878153.55D0,636143.04D0,772170.16D0,1.D-9/
284
285 DATA LAHG / 2000.0D2,4.0D5,1.0D6,4.0D6,1.0D7 /
286 DATA Lm /3.70D5,3.85D5,4.0D5,4.17D5,4.17D5,4.35D5,5.0D5,5.56D5,
287 + 5.99D5,6.33D5, 6.67D5,7.04D5 /
288 DATA LONG /
289 + 280.0,
290 + 300.0,
291 + 320.0,
292 + 340.0,
293 + 360.0,
294 + 380.0,
295 + 400.0,
296 + 450.0,
297 + 500.0,
298 + 550.0,
299 + 600.0,
300 + 650.0 /
301 DATA PI / 3.141592654D0 /
302
303c-- Take same Earth radius as in CORSIKA
304 parameter (rt = 6371315.D2)
305
306c-- Scale-height for Exponential density profile
307 parameter (hscale = 7.4d5)
308
309***********************************************************************
310*
311* SCATTERING PARAMETERS FOR RAYLEIGH:
312*
313* MEAN FREE PATH FOR SCATTERING RAYLEIGH (g/cm^2)
314 PARAMETER (XR=2.970D3)
315***********************************************************************
316
317c-- Observation level at La Palma
318 parameter (obslev = 2200.d2)
319
320 T_Ray = 1.0
321 T_Mie = 1.0
322 T_Oz = 1.0
323
324c-- Height calculated using an obslev = H(LaPalma) <> 0
325c H = -RT + SQRT(RT**2 + (height/COS(theta))**2 +
326c + (2.0D0*RT*height))
327 h = -rt + sqrt((rt+obslev)**2 +
328 + ((height-obslev)/cos(theta))**2 +
329 + (2.0d0*(rt+obslev)*(height-obslev)))
330
331 ROW = AINT(((H+1.)/1.0E5))
332
333***********************************************************************
334*
335* LARGE ZENITH ANGLE FACTOR (AIR MASS):
336
337c fs : air mass factor = path_lenght(za) / path_lenght(vertical)
338c at point of emission of cherenkov photon
339c => pure geometric correction on
340c absorption lenght measured at vertical height [km^-1]
341c--
342c ma = (1.D0/H)*(SQRT((RT*COS(theta))**2+(2*RT*H)+H**2)-
343c + (RT*COS(theta)))
344c--
345c mb = (1.d0/(h-obslev)) *
346c & ( -(rt+obslev)*cos(theta)
347c & +sqrt( (rt+h)**2 - ((rt+obslev)*sin(theta))**2) )
348c--
349
350c-- Air mass "m" calcualted using a one-exponential density
351c-- profile for the atmosphere, rho = rho_0 exp(-h/Hs)
352c-- with Hs = hscale = 7.4 km
353
354 Rcos2 = rt * cos(theta)**2
355 Rsin2 = rt * sin(theta)**2
356
357 x1 = sqrt((2. * obslev + Rcos2) / (2. * hscale))
358 x2 = sqrt((2. * h + Rcos2) / (2. * hscale))
359 x3 = sqrt((2. * obslev + rt) / (2. * hscale))
360 x4 = sqrt((2. * h + rt) / (2. * hscale))
361
362 e1 = derfc(x1)
363 e2 = derfc(x2)
364 e3 = derfc(x3)
365 e4 = derfc(x4)
366
367 m = exp(-Rsin2 / (2. * hscale)) * ((e1 - e2) / (e3 - e4))
368
369**********************************************************************
370*
371* RAYLEIGH SCATTERING
372
373 RHOTOT = 0.0
374 do 11 i=1,5
375 RHOF(i) = 0
376 11 continue
377
378 DO 91 I=2,5
379 IF ( H .LT. LAHG(I) ) THEN
380 RHOTOT = RHOTOT +
381 + BATM(I-1)*(EXP(-LAHG(I-1)/CATM(I-1) ) -
382 + EXP(-H/CATM(I-1)))
383 GOTO 92
384 ELSE
385 RHOTOT = RHOTOT +
386 + BATM(I-1)*(EXP(-LAHG(I-1)/CATM(I-1) ) -
387 + EXP(-LAHG(I)/CATM(I-1)))
388 ENDIF
389 91 CONTINUE
390
391
392 92 RHO_FI = m*RHOTOT
393
394 T_Ray = EXP(-(RHO_FI/XR)*(400.D0/wavelength)**4)
395
396
397***************************************************************************
398* *
399* MIE ABSORPTION: WE USE FOR HEIGHTS LOWER THAN 10 Km AN EXACT FORMULA*
400* FOR THE AEROSOL DENSITY, AND WE USE A TABLE FOR HIGHTS HIGHER THAN *
401* 10 Km. WE TAKE THE TABLE FROM THE ALTERMAN ARTICLE. *
402***************************************************************************
403
404
405***************************************************************************
406* *
407* MIE SCATTERING PARAMETERS *
408 Hm = 1.2D5
409***************************************************************************
410
411 IF (ROW.GT.27) THEN
412 ROW=28
413 ENDIF
414
415
416 CON_MI = 2
417
418 1001 IF (ABS(LONG(CON_MI)-wavelength).LT.0.01) THEN
419 TOT_AE =AE_ABI(ROW,CON_MI)
420 ELSEIF (LONG(CON_MI).GT.wavelength) THEN
421 A = (AE_ABI(ROW,CON_MI)-AE_ABI(ROW,CON_MI-1))/
422 + (LONG(CON_MI) - LONG(CON_MI-1))
423 B = AE_ABI(ROW,CON_MI) - (A*LONG(CON_MI))
424 TOT_AE = A*wavelength + B
425 ELSE
426 CON_MI = CON_MI +1
427 GOTO 1001
428 ENDIF
429
430 T_Mie = EXP(-(m*TOT_AE))
431
432
433
434***********************************************************************
435* *
436* OZONE ABSORPTION: We used the Elterman table. *
437* *
438***********************************************************************
439 IF (ROW.GT.47) THEN
440 ROW = 47
441 ENDIF
442
443 CON_OZ = 2
444 2001 IF (LONG(CON_OZ).GT.wavelength) THEN
445 A = (OZ_ABI(ROW,CON_OZ)-OZ_ABI(ROW,CON_OZ-1))/
446 + (LONG(CON_OZ) - LONG(CON_OZ-1))
447 B = OZ_ABI(ROW,CON_OZ) - (A*LONG(CON_OZ))
448 TOT_OZ = (A* wavelength)+B
449 ELSEIF (ABS(LONG(CON_OZ)-wavelength).LT.0.01) THEN
450 TOT_OZ = OZ_ABI(ROW,CON_OZ)
451 ELSE
452 CON_OZ = CON_OZ + 1
453 GOTO 2001
454 ENDIF
455
456 T_Oz = EXP(-(m*TOT_OZ))
457
458************************************************************************
459* *
460* TOTAL TRANSMISSION OF THE ATMOSPHERE: (RAYLEIGH + MIE + OZONE) *
461************************************************************************
462
463 tr_atmos = T_Ray*T_Mie*T_Oz
464
465 RETURN
466
467 END
468
469c @endcode
470
471c EOF
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