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Unformatted text preview: A large area with little pressure difference puts less pressure on the air to move into an area of lower pressure. The Coriolis force affects the direction of wind and is caused by the rotation of the Earth. Air moves in a straight path around the Earth, but the Earth's rotation underneath the air (and also ocean currents and aircraft, among other things) causes the path to be skewed (deflected) to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. Coriolis force does not make winds faster or slower, but the amount of wind movement it causes is based on how fast the Earth is rotating. The effect is strongest at the poles, which rotate faster, and has no effect on the equator. Coriolis causes more deflection over larger distances than smaller ones, and faster objects over slower ones....
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- Spring '08