GEOG 2050 Chapter : Chapter 6

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15 Mar 2019
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Atmospheric and oceanic circulations: air pressure: pressure exerted downward. Weight of atmosphere above you: low pressure= bad weather, high pressure= clear. Colder you are the higher pressure: wind essentials: air pressure and its measurement, mercury barometer, aneroid barometer, wind: description and measurement, wind, anemometer, wind vane, wind direction: winds are named for the direction from which they originate, ex. A wind from the west is a westerly wind (blowing eastward: beaufort wind scale: made scale on observation. What makes wind blow: gravity, pressure gradient (warm in some spots, cool in other, high pressure low pressure, coriolis force, spinning clockwise and then counter clockwise, friction force. If we didn"t spin: wind would flow from poles to the equator, we would be really cold. Forms polar easterlies: antarctic high: stronger and more persistent. Multi- year oscillations in circulation: north atlantic oscillation, artic oscillation, pacific oscillation.

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