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Climate Change by Kaufaui Vincent Wong

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Chapter 4

Greenhouse Effect andClimate Change

4.1 Background

If one is to scientifically verify global climate change, one must first understand its causes. Inbound sunlight passes through the earth’s atmosphere and reaches the surface of the earth. Some of that light is absorbed as heat to be re-emitted later, while some of it is immediately reflected from the earth’s surface back into the atmosphere. When the outbound energy reaches the atmosphere, the atmosphere acts like a gaseous lens by reflecting the major portion of the outbound energy back toward the earth’s surface. The result is that extra energy is trapped. Let us consider the incoming radiation. As the distance of the sun is known (93,000,000 miles or 149,668,992 km) the angle of ...

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