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Cities Along East Coast of China

23.6N 120.9E

June 30th, 2013 Category: Snapshots VIIRSSuomi-NPP

China – June 29th, 2013

The cities of Shanghai and Hangzhou (above) and Hong Kong (lower left) stand out along the shoreline of China, as do populated areas along the west coast of the island of Taiwan. Shanghai is China’s most populous city, situated on the eastern coast of the country, a port on the estuary of the Yangtze River.

Hong Kong is a former British dependency on the southeastern coast of China. The area comprises Hong Kong Island, the Kowloon peninsula, and the New Territories, additional areas of the mainland. Hong Kong has become one of the world’s major financial and manufacturing centers.

Dust and Haze Over Northeastern China

39.9N 116.4E

March 13th, 2013 Category: Clouds, Dust Storms

China – March 10th, 2013

A cloud of dust that has swept across northeastern China from near the border with Mongolia can be seen stretching towards Beijing and the Bohai Sea (upper right). The dust intermingles with haze, in the lower half of the image, reaching the coast by Shanghai (right). The haze may be a combination of smog, dust and other forms of air pollution.

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).

Haze Over Shanghai and Yangtze River Mouth, China

31.2N 121.4E

February 11th, 2013 Category: Climate Change, Clouds, Rivers, Sediments

China – January 25th, 2013

Haze hangs in the air over Shanghai (bottom right), the mouth of the Yangtze River and the surrounding area. Haze refers to weather with air humidity of 80 percent or below, and is different from fog, which occurs when humidity in the air is more than 90 percent. It forms when concentrations of dust and smog in the air are high.

Shanghai, like Beijing, classifies haze as light, moderate or heavy. Light haze means that outdoor visibility is between five and ten kilometers; with moderate haze, visibility is between two and five kilometers; heavy haze means visibility is less than two kilometers.

Experts said that haze contains substances harmful to the respiratory tract and lungs so people should stay indoors during moderate and heavy haze days. Long exposure to haze can lead to coryza, bronchitis and even lung cancer.

Haze Over Northeastern China, From Shanghai to Beijing

39.9N 116.4E

January 28th, 2013 Category: Climate Change, Clouds, Rivers

China – January 26th, 2013

A thick haze hangs over the plains northeastern China, thinning near the coast. It veils cities including Shanghai (bottom center) and Beijing (upper left quadrant), as well as the mouth of the Yangtze River (by Shanghai), and reaches the shores of the Bohai Sea (above center).

Haze forms when concentrations of dust, smoke and/or pollutants in the air are high. Since it contains substances harmful to the respiratory tract and lungs, last year Chinese authorities set tougher rules to combat air pollution by ordering all big cities to monitor tiny particles that do serious damage to health. Stricter air pollution monitoring standards were ordered for Beijing, Shanghai, Chongqing, Tianjin, 27 provincial capitals and three industrial belts: the Yangtze and Pearl river deltas and Beijing’s hinterland. Another 113 cities must adopt new standards next year and all but the smallest cities by 2015.