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Cold snap dissipates smog over Shanghai
By Ni Yinbin |
December 15, 2011, Thursday
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Online Edition
Online Edition
SHANGHAI'S air quality improved this morning with strong winds from north China, allowing local residents to breathe some relief after a few days of air pollution, the city's environment watcher says.
The PM10 concentration of airborne particles 10 micrometers and smaller dropped to 0.051 milligram per cubic meter at 8am from a peak of 0.421 milligram on Tuesday night. Today's air quality is rated good, says the Shanghai Environmental Monitoring Center.
But since the cold front also brought pollutants from the north and degraded the city's air quality last night, today's air pollution index, based on a 24-hour average, might still indicate light air pollution, the center explains.
Shanghai's API dropped to 104 at 2pm today, slightly over 100, the benchmark of pollution. The city's API stayed over 150 in the past three days.
The PM10 concentration of airborne particles 10 micrometers and smaller dropped to 0.051 milligram per cubic meter at 8am from a peak of 0.421 milligram on Tuesday night. Today's air quality is rated good, says the Shanghai Environmental Monitoring Center.
But since the cold front also brought pollutants from the north and degraded the city's air quality last night, today's air pollution index, based on a 24-hour average, might still indicate light air pollution, the center explains.
Shanghai's API dropped to 104 at 2pm today, slightly over 100, the benchmark of pollution. The city's API stayed over 150 in the past three days.
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