京津冀臭氧变化特征及与气象要素的关系

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Abstract

Based on the O₃-8h data of 13 cities in Beijing-Tianjin-Hebei region from 2014 to 2017, the temporal variation and pollution characteristics of O₃ were analyzed. In addition, the relationship between the O₃ concentration and the meteorological factors was studied by combining with the meteorological data of the same period. O₃-8h in Beijing-Tianjin-Hebei region increased from 2014~2017, with an average annual increase of 4.50μg/m³.O₃ pollution situation in the whole region aggravated, especially in Beijing and Baoding. The monthly O₃ concentration and the over-standard situation mainly presented single-peak variations in 2014~2015, with the maximum in May. However, the irregular double-peak variations were found in 2016~2017,showing one peak value during May to June and the other in September. The correlation between O₃ concentration and meteorological factors indicated that the influence of meteorological factors on O₃ had obvious seasonal differences. In spring, summer and autumn, the temperature was the main factor affecting O₃ concentration, while the relative humidity and wind speed were the main factors in winter. Besides, it is indicted that the thresholds for the formation of high O₃ concentration in Beijing, Tianjin and Shijiazhuang were different in summer.

Key words： Beijing-Tianjin-Hebei region O₃ concentration O₃ pollution meteorological factors

Received: 07 December 2018

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X511

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	WANG Mei
	ZHENG You-fei
	LIU Yan-ju
	LI Qiao-ping
	DING Yi-hui

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WANG Mei,ZHENG You-fei,LIU Yan-ju等. Characteristics of ozone and its relationship with meteorological factors in Beijing-Tianjin-Hebei Region[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(7): 2689-2698.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I7/2689

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