Wednesday, October 27, 2010

Isobars


An Isobar is a map that displays lines of equal atmospheric pressure. There are three rules that apply to an Isobar map; Isobar lines never cross or touch, the Isobar lines can only pass through pressures of  +1000 or -1000 and lastly atmospheric pressure is shown in mb (millibars). This map is displaying the atmospheric pressure around and over Europe.

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