Lecture 09

Lecture 09 - Lecture 9:Overall Atmospheric Circulation...

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Lecture 9:Overall Atmospheric Circulation Solar heating and atmospheric forces combine to develop a global-scale pattern of atmospheric circulation.
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Forces Influencing Global Atmospheric Circulation Atmospheric Heating Solar insulation is the primary source of energy Most heat input occurs near the equator and least input occurs at poles Simple hemispheric convection results Coriolis effect Fluids in motion are affected by Earth’s rotation Causes air masses to move toward the right (left) in the northern (southern) hemisphere producing clockwise (counter-clockwise) eddies or cyclones
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Simplest Model for Global Air Circulation Based on Convection Flow Heat Generated Convection Flow
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Second Order Model of Global Air Circulation Hadley Cell Hadley Cell Ferrel Cell Ferrel Cell Polar Cell
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Second Order Global Air Circulation Model Effects of heating and rotation create three latitudinal zones of prevailing winds in each hemisphere Trades (0°-30°), Westerlies (30°-60°), Polar Easterlies (60°-90°)
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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 09 - Lecture 9:Overall Atmospheric Circulation...

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