WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY
Timelapse footage of atmospheric Kelvin-Helmholtz waves, made visible by cloud formation. The clouds forming have the appearance of rolling crests, formed when there is significant wind shear between two air masses of different densities, which causes waves to form at their boundary, just as the movement of wind over water does. Filmed in Colorado, USA, in winter.
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