The Physical Environment

                                                       
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The Occlusion Process

An occlusion occurs when cold and warm fronts merge. This can happen in two ways. A cold occlusion occurs if very cold air lies behind a cold front and cool air ahead of a warm front. As the air of the warms sector is "squeezed", the warm front is lifted above the surface. A warm occlusion occurs if cool air is located behind a cold front and colder air ahead of the warm front.

The animation below is a profile view of a cold occlusion.

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For Citation: Ritter, Michael E. The Physical Environment: an Introduction to Physical Geography.
Date visited.  https://www.earthonlinemedia.com/ebooks/tpe_3e/title_page.html

©2003 - 2012 Michael Ritter (tpeauthor@mac.com)
Last revised 6/5/12

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