by Anonymous on March 13th, 2007

Anonymous

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Describe air movement in high- and low-pressure areas.

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  • by Glenn Blaylock on March 14th, 2007

    Glenn Blaylock

    In the northern hemisphere, the air in a low pressure system spirals inward in a counterclockwise direction. At the center of the low, This inward flowing air has now where to go but up. So, it is also rising. On the other hand, the air of a high pressure system spirals outward in a clockwise direction. At the center of the high, air sinks to replace that which flows out at the surface.

    In the southern hemisphere, air movement for these two types of pressure systems is basically the same. The only difference is the direction of rotation. In the southern hemisphere lows rotate clockwise and highs rotate counterclockwise.

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  • by radiofan92 on March 13th, 2007

    radiofan92

    Northern Hemisphere: High pressure spins clockwise, lows spin counterclockwise.

    Southern Hemisphere: The opposite is true.

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