Smog in Shenzhen could stay until the weekend
2013-December-12 Source: Szdaily web edition
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Shenzhen Meteorological Observatory reminded residents yesterday to reduce outdoor activities and keep windows shut as the haze that has shrouded the city for more than 10 days likely will linger into the weekend.

The observatory issued a “yellow” alert Tuesday when local air pollution reached a medium level of severity, with PM2.5 readings at 140-160 mg per cubic meter in most parts of the city. The acceptable daily limit in China is 75 mg per cubic meter.

“The haze could be cleared by a southern wind that should dominate the city Friday and bring light rain Sunday and Monday,” Li Hui, a meteorologist with Shenzhen Meteorological Observatory, said yesterday.

Air quality slightly improved yesterday as visibility increased to 5 kilometers, but Li said pollutants were still at a level that presented health risks and reminded children and elderly people with respiratory diseases to reduce outdoor activities.

“On Sunday and Monday, there will be rain and the haze will be cleared,” Li said.

Smoggy skies have blanketed the city since the beginning of December. A northern wind that affected the city Monday was too weak to disperse pollutants. Instead, it worsened the situation by bringing pollutants from central and eastern China to Shenzhen.

Huang Yuanfeng, head of the environmental monitoring station of the city’s environmental authority, said the recent pollution has been mainly caused by weather patterns in the dry winter season, when winds from the north and south are weak and stagnant in Shenzhen.

“There won’t be an obvious change or improvement in the coming days if the wind isn’t strong enough to blow away the pollutants,” Huang said.

Local residents are encouraged to take public transportation whenever possible to help reduce the city’s vehicle emissions.

(By Han Ximin)

Editor: 张斯
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