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Ch 2 (5) - Beam Depletion refers to a N gmyn'yf of solar...

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Unformatted text preview: Beam Depletion: refers to a N gmyn'yf) of solar energy as the sun’s rays pass through the atmosphere. . A greater amount of beam depletion occurs with a IS )flf [ solar angle. So how does all this relate to the atmosphere? The changing solar angles during the year cause seasonal variations in the amount of solar energy reaching the surface of the earth. That is the major controlling factor on causing seasonal temperature changes. Also the number of hours the sun is shining (length of daylight) is an important factor in how much solar energy is available at some location for heating. Let’s look at this in two ways: First, at a given location (like Lubbock) the solar angle changes during the year. Second, solar angle varies with lati de: At the equator there is a 5] y la l variation in solar angle during the year. This translates to a variation in temperature during the year. As you go north from the equator toward the pole, there is a variation in solar angle during the year which translates to a temperature variation during the year. Other controlling factors on temperature will be discussed in Chapter 3. ...
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