1. Determine the latitude where the direct (90º sun angle) rays of the sun
(subsolar latitude) will be located on the following dates. Explain, in your
own words, how you answered the question.
2. Calculate the maximum solar angle (maximum solar elevation) for each of
the days.
3. Determine the radiation intensity for each of the days.
Subsolar Latitude
Max Solar Angle
Radiation Intensity
December 21®
February I"
March 21"
May 1"
June 21"
August 1"
September 21"
November 1"
1
2
0.00
1.75
3.49
10| 17.36
19.08
20.79
20
34.20
35.84
37.46
30| 50.00
51.50
52.99
40
64.28
65.61
66.91
50
76,60
77.71
78.80
60
86.60
87.46|
88.29
70||
93.97
94.55
95.11
80
98.48||
98.77| 99.03
3
5.23
22.50
39.07
54.46
68.20
79.86
89.10
95.63
99.25
4
5
6
6.98
8.72
10.45
24.19
25.88
27.56
40.67
42.26
43.84
55.92
57.36
58.78
69.47
70.71
71.93
80.90
81.92
82.90
89.88
90.63
91.36
96.13|
96.59
97.03
99.45| 99.62| 99.76
7
8
12.19||
13.92
29.24|
30.90
45.40
46.95
60.18
61.57
73.14
74.31
83.87
84.80
92.05
92.72
97.44
97.81
99.86
99.94
9
15.64
32.56
48.48
62.93
75.47
85.72
93.36
98.16
99.98