Characteristics of ozone and its relationship with meteorological factors in Beijing-Tianjin-Hebei Region
WANG Mei1, ZHENG You-fei1,2, LIU Yan-ju3, LI Qiao-ping3, DING Yi-hui3
1. School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing 210044, China;
2. Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science & Technology, Nanjing 210044, China;
3. National Climate Center, China Meteorological Administration, Beijing 100081, China
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.
王玫, 郑有飞, 柳艳菊, 李巧萍, 丁一汇. 京津冀臭氧变化特征及与气象要素的关系[J]. 中国环境科学, 2019, 39(7): 2689-2698.
WANG Mei, ZHENG You-fei, LIU Yan-ju, LI Qiao-ping, DING Yi-hui. Characteristics of ozone and its relationship with meteorological factors in Beijing-Tianjin-Hebei Region. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(7): 2689-2698.
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