气候变化领域集成服务门户(CCPortal): Attribution of surface ozone to NOx and volatile organic compound sources during two different high ozone events

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DOI	10.5194/acp-22-11675-2022
	Attribution of surface ozone to NOx and volatile organic compound sources during two different high ozone events
	Lupascu, Aurelia; Otero, Noelia; Minkos, Andrea; Butler, Tim
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	11675
结束页码	11699
卷号	22 期号:17 页码:25
英文摘要	Increased tropospheric ozone (O-3) and high temperatures affect human health during heat waves. Here, we perform a source attribution that considers separately the formation of German surface ozone from emitted NOx and volatile organic compound (VOC) precursors during two peak ozone events that took place in 2015 and 2018 which were associated with elevated temperatures. Results showed that peak ozone concentrations can be primarily attributed to nearby emissions of anthropogenic NOx (from Germany and immediately neighboring countries) and biogenic VOC. Outside of these high ozone episodes, baseline ozone concentrations are attributed primarily to long-range transport, with ozone due to remote anthropogenic NOx emissions and methane oxidation adding to the tropospheric ozone background. We show that a significant contribution to modeled O-3 coming from German NOx or VOC emissions occurs mostly in southern Germany, emphasizing that the production of ozone depends on the local interplay between NOx and VOC precursors. Shipping activities in the Baltic and North seas have a large impact on ozone predicted in coastal areas, yet a small amount of ozone from these sources can also be seen far inland, showing the importance of transported ozone on pollution levels. We have also shown that changes in circulation patterns during the peak O-3 episodes observed in Germany during the 2015 and 2018 heat waves can affect the contribution of different NOx emission sources to total O-3; thus, the possible influence of multiple upwind source regions should be accounted for when mitigation strategies are designed. Our study also highlights the good correlation between ozone coming from German biogenic VOC emissions and total ozone, although the diurnal variation in the ozone coming from biogenic sources is not dominated by the diurnal variation in biogenic emissions, and the peaks of ozone from biogenic sources are disconnected from local emission peaks. This suggests that the formation of O-3 from local German biogenic VOC emissions is not the sole factor that influences the ozone formation, and other meteorological and chemical processes affect the did variation of ozone with a biogenic origin. Overall, this study helps to demonstrate the importance of a source attribution method to understand the sources of O-3 in Germany and can be a useful tool that will help to design effective mitigation strategies.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000851386100001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273146
作者单位	Free University of Berlin; University of Bern
推荐引用方式 GB/T 7714	Lupascu, Aurelia,Otero, Noelia,Minkos, Andrea,et al. Attribution of surface ozone to NOx and volatile organic compound sources during two different high ozone events[J],2022,22(17):25.
APA	Lupascu, Aurelia,Otero, Noelia,Minkos, Andrea,&Butler, Tim.(2022).Attribution of surface ozone to NOx and volatile organic compound sources during two different high ozone events.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(17),25.
MLA	Lupascu, Aurelia,et al."Attribution of surface ozone to NOx and volatile organic compound sources during two different high ozone events".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.17(2022):25.