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Multiple Cloud Vortices off Moroccan Coast – April 11th, 2009

April 11th, 2009 Category: Clouds, Image of the day

Morocco - April 9th, 2009

Morocco - April 9th, 2009

Several cloud vortices can be seen swirling off the coast of Western Sahara and Morocco, south of the Canary Islands.

An interesting property of a vortex is that of merging. If two or more the vortices visible here are approximately parallel and circulating in the same direction, they will quickly merge to form a single vortex.

If this occurs, the circulation of the merged vortex will equal the sum of the circulations of the constituent vortices.

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