| 河南省臭氧污染趋势特征及敏感性变化 |
| 摘要点击 2141 全文点击 674 投稿时间：2021-08-26 修订日期：2021-11-05 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 臭氧(O3) 变化趋势 趋势检验 臭氧监测仪(OMI) 敏感性 |
| 英文关键词 ozone (O3) variation trend trend test ozone monitoring instrument (OMI) sensitivity |
|
| 中文摘要 |
| 基于环境空气质量站点数据及卫星遥感数据，研究了河南省近地面臭氧（O3）2015~2020年变化特征、趋势和生成敏感性.结果表明，2015~2020年，河南省近地面O3浓度先上升后下降，2018年浓度最高，O3日最大8 h滑动平均值（MDA8）年均值为110.70 μg·m-3，各站点间的MDA8值差异逐渐缩小；河南省月均MDA8时间序列表现为上升趋势，增长速率为2.46 μg·（m3·a）-1，经Mann-Kendall趋势检验，除漯河、南阳和平顶山市外其它地市上升趋势均具有显著性意义（P<0.05）；6 a间四季MDA8浓度也呈增长趋势，增长大小为：秋季（19.31%）>冬季（17.09%）>春季（16.82%）>夏季（7.24%）；2015~2019年河南省对流层NO2高值集中在西北部，浓度呈下降趋势，下降速率为0.34×1015 molecules·（cm2·a）-1，对流层HCHO呈缓慢上升趋势，年增速为0.19×1015 molecules·（cm2·a）-1，空间上北部城市城区浓度较高；O3生成敏感性控制区表明，河南省东部大部分城市属于VOCs控制区. |
| 英文摘要 |
| 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. |
|
|
|
