Chapter 6 - Chapter 6: Atmospheric and Oceanic Circulations...

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Chapter 6: Atmospheric and Oceanic Circulations Air pressure: Pressure produced by the motion, size, and number of gas molecules in the air and exerted on surfaces in contact with the air Aleutian low (Subpolar low-pressure cell): A region of low pressure centered approximately at 60 degrees latitude in the North Atlantic near Iceland and in the North Pacific near the Aleutians, as well as in the Southern Hemisphere. Airflow is cyclonic; weakens in summer and strengthens in winter Anemometer: A device that measures wind velocity Aneroid barometer: A device that measures air pressure using a partially evacuated, sealed cell Antarctic high: A consistent high-pressure region centered over Antarctica; source region for an intense polar air mass that is dry and associated with the lowest temperatures on Earth Anticyclone: A dynamically or thermally caused area of high atmospheric air pressure with descending and diverging airflows that rotate clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere Azores high: A subtropical high-pressure cell that forms in the Northern Hemisphere in the eastern Atlantic; associated with warm, clear water and large quantities of sargassum, or gulf weed, characteristic of the Sargasso Sea Beaufort wind scale: A descriptive scale for the visual estimation of wind speeds
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This note was uploaded on 02/28/2012 for the course GEO 121 taught by Professor Medley during the Fall '08 term at Miami University.

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Chapter 6 - Chapter 6: Atmospheric and Oceanic Circulations...

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