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Haze Over Yangtze River Delta and van Kármán Vortex Streets by Jeju Island, China and Korea – February 18th, 2013

33.4N 126.5E

February 18th, 2013 Category: Clouds, Image of the day, Sediments

China – January 28th, 2013

Haze hangs over northeastern China, particularly over the plains by the Yangtze River Delta. The delta comprises the triangular-shaped territory of Wu-speaking Shanghai, southern Jiangsu province and northern Zhejiang province of China, by where the Yangtze River drains into the East China Sea.

The urban build-up in the area has given rise what may be the largest concentration of adjacent metropolitan areas in the world. It covers an area of 99600 km2 and is home to over 105 million people as of 2010, of which an estimated 80 million is urban.

Visible to the east, offshore, is the island and Korean province of Jeju, south of the Korean Peninsula (upper right quadrant). Streaming off the island to the south are Van Kármán vortex streets, a repeating pattern of swirling vortices caused by the unsteady separation of flow of a fluid around blunt bodies (in this case, the island of Jeju).

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