Tuesday, November 27, 2012

Isobars


Isobar is a line of equal or constant pressure on a graph, plots, or map. The distribution of isobars is closely related to the magnitude and direction of the wind field, and can be used to predict future weather patterns. Isobars are commonly used in television news weather reporting. The above image is an example of an isobar of the high wind event in South Dakota. Each isobar represents a 4mb pressure difference.


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