Wikipedia:Today's second feature/February 26, 2006

From Wikipedia, the free encyclopedia

Low pressure system over Iceland

A low pressure area is a region where the atmospheric pressure is lowest with relation to the surrounding area. Air will tend to flow in to fill a low pressure area, but will be deflected perpendicular to its velocity by the Coriolis effect. A system of equilibrium can then establish itself creating circular movement, or a cyclonic flow.

Photo credit: NASA

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