Trend Changes in Ozone Pollution and Sensitivity Analysis of Ozone in Henan Province

被引：0
|
作者：
Yan Y.-Y. [1 ]
Yin S.-S. [2 ]
He Q. [3 ]
Qin K. [3 ]
Zhang R.-Q. [2 ]
机构：
[1] College of Chemistry, Zhengzhou University, Zhengzhou
[2] School of Ecology and Environment, Zhengzhou University, Zhengzhou
[3] School of Environment and Spatial Informatics, China University of Mining and Technology, Xuzhou
来源：
Huanjing Kexue/Environmental Science | 2022年 / 43卷 / 06期
关键词：
Ozone (O[!sub]3[!/sub]); Ozone monitoring instrument (OMI); Sensitivity; Trend test; Variation trend;
D O I：
10.13227/j.hjkx.202108287
中图分类号：
学科分类号：
摘要：
Based on air quality station data and satellite remote sensing data, the interannual variation characteristics and seasonal variation trends of near-surface ozone (O3) in Henan province were studied, and the variation in O3 sensitivity was analyzed. The results showed that the O3 concentration near the surface of Henan province increased first and then decreased from 2015 to 2020. The highest O3 concentration was found in 2018, and the annual mean of the maximum daily 8 h moving mean (MDA8) of O3 was 110.70 μg•m-3. The difference in MDA8 values among different stations gradually decreased. From 2015 to 2020, the average monthly MDA8 in Henan province showed an upward trend, with a growth rate of 2.46 μg•(m3•a)-1. According to the MK trend test, except for in Luohe, Nanyang, and Pingdingshan, the rising trend in other cities was significant (P<0.05). The concentration of MDA8 in the four seasons also showed an increasing trend during the 6 years as follows: autumn (19.31%)>winter (17.09%)>spring (16.82%)>summer (7.24%). From 2015 to 2019, the high value of tropospheric NO2 was concentrated in the northwest of Henan province, and the concentration showed a decreasing trend with a decreasing rate of 0.34×1015 molecules•(cm2•a)-1, whereas the tropospheric HCHO showed a slow rising trend with an annual growth rate of 0.19×1015 molecules•(cm2•a)-1, with a higher concentration in the northern urban area. The O3 sensitivity control area from 2015 to 2019 showed that most of the eastern part of Henan province belonged to the VOCs limited category. © 2022, Science Press. All right reserved.
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页码：2947 / 2956
页数：9
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