Lists solar radiation received at solar noon at the top of the atmosphere for va
ID: 237110 • Letter: L
Question
Lists solar radiation received at solar noon at the top of the atmosphere for various Northern Hemisphere latitudes and dates. Values are in watts per square meter (W m^-2). Calculate the difference in solar radiation received between 30 degree N and 60 degree N for each of the solstices and equinoxes. Why is the seasonal range in solar radiation received greater at 60 degree N than at 30 degree N? Why is the difference in solar receipt between 60 degree N and 30 degree N greater in the winter than in the summer?Explanation / Answer
16)march 21 1183 - 683 = 500 W m^-2
June 21 -349 wm^-2
September 21 - 500 wn^-2
December 21 - 658 wm^-2
17) when someone goes more towards the poles the range in the solar radiation increases due to the large variance in the length of the days because of which solar radiance received at 60° greater than 30°
18) during the summer solstice ,at noon the sun zenith angle is 37° at 60 latitude and 7° at 30 latitude and noon solar irradiance = 1.24 and also the sun is much more time at the northern latitude therefore the net result is very small difference with respect to total sunshine
Whereas in the winter solstice at noon the sun has zenith angle 83 ° at 60 and 53° at 30 and the solar irradiance = 4.93
The sun is also longer at lower altitude
Therefore the net result is a much greater solar receipt difference in winter
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