Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-7335-2019 |
Temporal variations and trend of ground-level ozone based on long-term measurements in Windsor, Canada | |
Xu, Xiaohong1; Zhang, Tianchu1; Su, Yushan2 | |
2019-06-04 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:11页码:7335-7345 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | This study investigates temporal variations and long-term (1996-2015) trends of ground-level O-3 (ozone) and its precursors, NOx (nitrogen oxides), and volatile organic compounds in Windsor, Ontario, Canada. During the 20-year study period, NOx, non-methane hydrocarbon concentrations, and ozone formation potential decreased significantly by 58 %, 61 %, and 73 %, respectively, while O-3 concentrations increased by 33 % (20.3 ppb in 1996 vs. 27 ppb in 2015). Our analysis revealed that the increased annual O-3 concentrations in Windsor were due to (1) decreased O-3 titration (by 50 % between 1996 and 2015) owing to declining nitric oxide concentrations, which is suggested by a slightly decreasing trend of annual mean total O-3 concentrations after the titration effect is removed, (2) reduced local photochemical production of O-3 because of dwindling precursor emissions, and (3) an increased background O-3 level that has a greater impact on the low-to-median concentrations. The net effect of those factors is decreasing peak O-3 levels during the smog season from May to September but an overall increasing trend of annual means. These results indicate that the emission control measures are effective in reducing peak ozone concentrations. However, challenges in lowering annual O-3 levels call for long-term collaborative efforts in the region and around the globe. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000470323500003 |
WOS关键词 | SURFACE OZONE ; IMPACT ; NOX ; URBAN ; HYDROCARBONS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183998 |
专题 | 地球科学 |
作者单位 | 1.Univ Windsor, Dept Civil & Environm Engn, Windsor, ON, Canada; 2.Ontario Minist Environm Conservat & Pk, Toronto, ON, Canada |
推荐引用方式 GB/T 7714 | Xu, Xiaohong,Zhang, Tianchu,Su, Yushan. Temporal variations and trend of ground-level ozone based on long-term measurements in Windsor, Canada[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(11):7335-7345. |
APA | Xu, Xiaohong,Zhang, Tianchu,&Su, Yushan.(2019).Temporal variations and trend of ground-level ozone based on long-term measurements in Windsor, Canada.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(11),7335-7345. |
MLA | Xu, Xiaohong,et al."Temporal variations and trend of ground-level ozone based on long-term measurements in Windsor, Canada".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.11(2019):7335-7345. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论