Lecture 10

Lecture 10 - Lecture 10 Cyclones Anticyclones and Air...

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Lecture 10: Cyclones, Anticyclones, and Air Masses The circulation model describes the global average characteristics of climate. More realistic consideration of regional patterns gives us a better look at weather.
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Cyclones and Anticyclones Cyclones (low pressure centers with counterclockwise air flow in NH, clockwise air flow in SH). Low-level convergence Upper-level divergence Rising air motion Clouds and precipitation Anticyclones (high pressure centers with clockwise air flow in NH, counterclockwise air flow in SH). Low-level divergence Upper-level convergence Subsiding air motion Clear skies and fair weather
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Air Masses An air mass is a large body of air (>1000 2 km in surface area) with relatively uniform properties (temperature and moisture) in the horizontal direction, but not uniform vertically. Air masses form where there are persistent atmospheric conditions. Such conditions are normally associated with anticyclones (high
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This note was uploaded on 05/08/2009 for the course GEOL 150Lxg taught by Professor Stott during the Spring '07 term at USC.

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Lecture 10 - Lecture 10 Cyclones Anticyclones and Air...

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