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Fog clouds Shanghai's skyscrapers

(chinadaily.com.cn) Updated: 2011-02-23 09:52

Fog clouds Shanghai's skyscrapers

Fog shrouds tall buildings in the Pudong district of Shanghai, Feb 22, 2011. Advection fog occurs when moist air is blown over a cool surface. It is common when a warm front passes over an area with significant snow. [Photo/Xinhua]

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