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Modeling study of gaseous pollutants over Yangtze River Delta in winter of 2011
Received date: 2013-02-21
Revised date: 2013-05-23
Online published: 2014-05-15
An air pollution episode over the Yangtze River Delta (YRD) during the period from 8 to 16 Dec 2011 was investigated using MM5-CMAQ model system. There were high NO2 concentrations in Shanghai and Hangzhou. Ozone concentrations were greater than 40 ppb in the southeast of Hangzhou and on the borders between Anhui, Zhejiang, and Jiangxi provinces. The SO2 concentrations in Shanghai and Nanjing were high. The pollution episode occurred when SO2 from emission and NO2 from chemical and emission processes accumulated under weak diffusion conditions. NO also accumulated consuming ozone and resulting in a decrease of O3 concentration.
Key words： CMAQ; gaseous pollutants; process analysis
GAO Lina , ZHANG Renjian , HAN Zhiwei , FU Congbin , YAN Peng , HONG Shengmao , JIAO Li . Modeling study of gaseous pollutants over Yangtze River Delta in winter of 2011[J]. Journal of University of Chinese Academy of Sciences, 2014 , 31(3) : 380 -388 . DOI: 10.7523/j.issn.2095-6134.2014.03.013
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