Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6317029 | Environmental Pollution | 2013 | 10 Pages |
Abstract
Haze pollution caused by heavy particulate matter (PM) loading brings significant damage in eastern China. Long-term monitoring from 1980 to 2011 and 1-year field measurement in 2011-2012 are used for investigating visibility variation and the impact of PM pollution for the Yangtze River Delta (YRD). It was found that visual range in the YRD endured a sharp reduction from 13.2 km to 10.5 km during 1980-2000. Average mass extinction efficiency (MEE) for inhalable PM (PM10) is 2.25 m2/g in 2001-2011, and extinction coefficient due to PM10 is 207 Mmâ1, accounting for 36.2% of total extinction coefficient. MEE of PM2.5 and PM2.5-10 are 4.08 m2/g and 0.58 m2/g, respectively. Extinction coefficient due to PM2.5 and PM2.5-10 is 198 Mmâ1 (39.6%) and 20 Mmâ1 (4.0%) in 2011-2012. Maximum daily concentration of PM10 and PM2.5 is estimated to be 63 μg/m3 (RH: 73%) and 38 μg/m3 (RH: 70%) to keep visual range above 10 km. Fine particulate matter is the key factor for haze pollution improvement in the YRD area.
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Authors
Zhen Cheng, Shuxiao Wang, Jingkun Jiang, Qingyan Fu, Changhong Chen, Bingye Xu, Jianqiao Yu, Xiao Fu, Jiming Hao,