我国重点地区臭氧变化特征及与气象要素的关系

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Abstract Based on the historical data from 2015 to 2019, the temporal and spatial variations of ozone(O₃) in China were analyzed, and the relationships between O₃ pollution and meteorological factors in key regions were also analyzed based on meteorological data of the same period. The annual mean O₃ concentration in China increased from 83.8µg/m³ in 2015 to 92.4µg/m³ in 2019. The monthly variation of O₃ concentration mainly showed a "single-peak" pattern but a "double-peak" pattern in 2017. May to September is the period of high O₃ concentration, and the daily fluctuation of O₃ concentration in months from January to March and from October to November is greater than that from April to September. O₃ concentration is higher in eastern China and lower in western China. O₃ pollution mainly appears in the Beijing-Tianjin-Hebei region. O₃ concentration is positively correlated with sunshine duration and maximum temperature, while negatively correlated with relative humidity. The influences of temperature and wind speed on O₃ concentration are not the same in different regions. In most regions, the O₃ concentration has a strong positive correlation with temperature (r>0.5), while it is negatively correlated with temperature in the Qinghai-Tibet region (-0.2<r<0). O₃ increases first and then decreases with wind speed in most regions, however, it increases with the increase of wind speed in the Qinghai-Tibet region. O₃ pollution is more likely to occur when the temperature is higher than 25℃, relative humidity is 45% to 60%, and wind speed is 3 to 6m/s.

Key words： O₃ pollution variation characteristic meteorological factors

Received: 14 September 2023

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X511

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	Articles by authors
	MI Yi-hua
	DU Hui-yun
	LI Jie
	YANG Wen-yi
	WANG Tao
	WANG Zi-fa

Cite this article:

MI Yi-hua,DU Hui-yun,LI Jie等. Ozone pollution characteristics and its relationship with meteorological factors of key regions in China[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(4): 1894-1904.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I4/1894

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