Yan Yang-Yang, Yin Sha-Sha, He Qin, Qin Kai, Zhang Rui-Qin
College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, China.
Huan Jing Ke Xue. 2022 Jun 8;43(6):2947-2956. doi: 10.13227/j.hjkx.202108287.
Based on air quality station data and satellite remote sensing data, the interannual variation characteristics and seasonal variation trends of near-surface ozone (O) in Henan province were studied, and the variation in O sensitivity was analyzed. The results showed that the O concentration near the surface of Henan province increased first and then decreased from 2015 to 2020. The highest O concentration was found in 2018, and the annual mean of the maximum daily 8 h moving mean (MDA8) of O was 110.70 μg·m. 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·(m·a). According to the MK trend test, except for in Luohe, Nanyang, and Pingdingshan, the rising trend in other cities was significant (<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 NO was concentrated in the northwest of Henan province, and the concentration showed a decreasing trend with a decreasing rate of 0.34×10 molecules·(cm·a), whereas the tropospheric HCHO showed a slow rising trend with an annual growth rate of 0.19×10 molecules·(cm·a), with a higher concentration in the northern urban area. The O sensitivity control area from 2015 to 2019 showed that most of the eastern part of Henan province belonged to the VOCs limited category.
基于空气质量监测站数据和卫星遥感数据，研究了河南省近地面臭氧（O）的年际变化特征和季节变化趋势，并分析了O敏感性的变化。结果表明，2015年至2020年河南省近地面O浓度先上升后下降。2018年O浓度最高，O的日最大8小时滑动平均值（MDA8）的年平均值为110.70μg·m。不同站点的MDA8值差异逐渐减小。2015年至2020年，河南省月平均MDA8呈上升趋势，增长率为2.46μg·(m·a)。根据MK趋势检验，除漯河、南阳和平顶山外，其他城市的上升趋势显著（<0.05）。6年间四季MDA8浓度也呈上升趋势，依次为：秋季（19.31%）>冬季（17.09%）>春季（16.82%）>夏季（7.24%）。2015年至2019年，对流层NO高值集中在河南省西北部，浓度呈下降趋势，下降速率为0.34×10分子·(cm·a)，而对流层HCHO呈缓慢上升趋势，年增长率为0.19×10分子·(cm·a)，北部城区浓度较高。2015年至2019年O敏感性控制区显示，河南省东部大部分地区属于VOCs限制类。
