Monday, April 14, 2008

Cyclones

A Cyclone is an area of low atmospheric pressure characterized by inward spiraling winds that rotate counter clockwise in the northern hemisphere and clockwise in the southern hemisphere of the Earth. A cyclone may also be classified as a tropical storm, tornado, or an extratropical cyclones. Also depending on the location of the cyclone it may be referred to as hurricane, typhoon or cyclonic storm. Cold-core cyclones form due to the nearby presence of an upper level trough, which increases divergence over an area that induces upward motion and surface low pressure.

Sources:http://en.wikipedia.org/wiki/Cyclone
:http://en.wikipedia.org/wiki/Tropical_cyclone

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