assign2 - Introduction to Atmospheric Sciences (ATOC-210)...

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Introduction to Atmospheric Sciences (ATOC-210) Assignment # 2 Due date February 12/09 1) Distinguish between radiational heating and radiational cooling? Radiational heating is caused by absorption of solar radiation; radiational cooling is caused by emission of infrared radiation. 2) In a northerly climate, how might a deep snow cover in later winter delay the onset of spring-like weather? Snow is nearly a blackbody in the IR so that a snowcover chills the night air. Snow also has a relatively high albedo for solar radiation and thus has a cooling effect during daylight hours. Whatever heat is available, much is tied up in warming the snow to the melting point, melting and vaporizing snow, and vaporizing meltwater. 3) As a general rule, how does the weather change as the air pressure at the Earth?s surface rises or falls? If air pressure rises, the weather usually stays fair or. If it has been stormy, the weather improves. Falling air pressure is often accompanied by stormy weather.
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This note was uploaded on 12/25/2011 for the course ATOC 210 taught by Professor Ariya during the Winter '09 term at McGill.

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assign2 - Introduction to Atmospheric Sciences (ATOC-210)...

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