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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.

 

Sediments Along East China Coast Near Shanghai – April 28th, 2011

31.2N 121.4E

April 28th, 2011 Category: Image of the day, Rivers, Sediments

China - April 17th, 2011

Dense tan sediments are released into the East China Sea near Shanghai from rivers such as the Yangtze (above) and Qiantang (below). In the full image, differences in color within the sediments show the direction of ocean currents.

Visible in great detail in the full image are cities on the coastal plain, including Shanghai (bottom center). The large bay south of the city is Hangzhou Bay, the terminus of the Qiantang River.

Shanghai and Islands of Chongming County, China

31.2N 121.4E

July 11th, 2010 Category: Rivers

China - July 5th, 2010

China - July 5th, 2010

The city of Shanghai appears as a white area on the Yangtze River Delta on China’s eastern coast. The city itself is bisected by the Huangpu River, a tributary of the Yangtze, visible as a black ribbon through the white.

Several low-lying alluvial islands can be seen north of the city, in the mouth of the Yangtze River. These islands compose Chongming County, the only county under the jurisdiction of Shanghai. The largest three are Chongming Island (biggest, with an area of 1041 km²), Changxing Island and Hengsha Island.

Shanghai and Sediments from the Huangpu River, China

31.2N 121.4E

May 22nd, 2009 Category: Rivers

Shanghai, China - April 23rd, 2009

Shanghai, China - April 23rd, 2009

The city of Shanghai, here visible as a large grey area, sits on the Yangtze River Delta on China’s eastern coast, and is roughly equidistant from Beijing and Hong Kong.

The municipality as a whole consists of a peninsula between the Yangtze and Hangzhou Bay, China’s third largest island Chongming, and a number of smaller islands.

The city proper is bisected by the Huangpu River, a tributary of the Yangtze. Huangpu means “Yellow Bank River”, and true to its name, here it can be seen spilling golden brown sediments into the East China Sea.

The historic center of Shanghai, the Puxi area, is located on the western side of the Huangpu, while a new financial district, Pudong, has developed on the eastern bank.

The city has many rivers, canals, streams and lakes and is known for its rich water resources as part of the Taihu drainage area.

In the full image, the Korean Peninsula is also visible to the north. Sediments can be seen flowing from its rivers as well, particularly near the southern tip.