handout_atmospheric_circ

handout_atmospheric_circ - Handout for Chapter 8...

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Unformatted text preview: Handout for Chapter 8 Atmospheric Circulation and Weather * The earth's atmosphere is very hospitable to living organisms. This is the result of the interac- tion between the earth's atmosphere and the living organisms! It contains nitrogen (78%) and oxygen (21%). Contrast this to other planets in the solar system! * Water vapor is lighter than the atmosphere. Humid air is lighter than dry air! * Coriolis Effect : Looking into the direction of your movement, the Coriolis force pulls you to the right in the northern hemisphere , and to the left in the southern hemisphere . This effect arises due to the fact that we describe motions in the atmosphere and ocean relative to a coordi- nate system fixed to the surface of the earth which is rotating. * Wind circulates counterclockwise (clockwise) around a low pressure system in the northern hemisphere (southern hemisphere) . Wind circulates clockwise (counterclockwise) around a high pressure system in the northern hemisphere (southern hemisphere) . They are geos- trophic wind where pressure gradient balances Coriolis force . Once pressure distribution pattern is known (from weather chart), one can estimate wind speed due to geostrophic wind....
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This note was uploaded on 10/07/2011 for the course OCS 1005 taught by Professor Condrey during the Spring '08 term at LSU.

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handout_atmospheric_circ - Handout for Chapter 8...

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