Sandy streets over the Atlantic
Thick dust from the Sahara blowing over the ocean off the western coast of Africa encounters the islands of Cape Verde, forming a wake of swirling “vortex streets” visible by satellite.
Dust from the Sahara blows past the Cape Verde islands on Feb. 9, 2012. Credit: EOSnap/Chelys SRRS (Satellite Rapid Response System
These patterns are cloud vortex streets, also known as von Karman vortices. They are roughly symmetrical patterns of swirls created by low-level winds rushing over the Cape Verde Islands.
via universetoday by Jason Major
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