江苏省大气复合污染特征与相关气象驱动

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Abstract

In this study, we analyzed the temporal and spatial distribution characteristics of PM_2.5 and O₃_8h_max in 13cities of Jiangsu province based on the PM_2.5 and O₃_8h_max data. In addition, we also analyzed the influence of meteorological conditions on O₃ concentration. The annual average concentration of PM_2.5 in Jiangsu Province showed a decreasing trend from 2014 to 2017, with an average annual reduction of 6.06μg/m³, while O₃_8h_max showed an upward trend, with an average annual increase of 3.84μg/m³. On the whole, the monthly variations of PM_2.5 showed a "V" pattern, with high concentration appearing in winter and spring and low concentration in summer and autumn. The monthly variations of O₃_8h_max showed an irregular "M" pattern, with the maximum concentration in May and then gradually decreased, and it remained steady from July to September, and then gradually decreased. Spatially, the concentration of PM_2.5 was higher in western inland cities than in in the eastern coastal cities, whereas O₃_8h_max was opposite. The concentration of O₃ showed positive correlations with temperature and solar radiation and negative correlation with humidity. Solar radiation was the greatest influence on O₃ concentration, followed by temperature and humidity. The concentration of O₃ was very probable to exceed the new NAAQS in China while daily average temperature was between 20℃ to 30℃, the relative humidity was between 50% to 70%, and the solar radiation was higher than 150w/m².

Key words： Jiangsu PM_2.5 O₃ atmospheric compound pollution meteorological factors

Received: 15 January 2018

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	Articles by authors
	ZHAO Hui
	ZHENG You-fei
	WU Xiao-yun
	WEI Li
	GUAN Qing
	WANG Zhan-shan

Cite this article:

ZHAO Hui,ZHENG You-fei,WU Xiao-yun等. Atmospheric compound pollution characteristics and the effects of meteorological factors in Jiangsu Province[J]. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(8): 2830-2839.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2018/V38/I8/2830

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