气候变化领域集成服务门户(CCPortal): Tropospheric NO2 and O3 Response to COVID-19 Lockdown Restrictions at the National and Urban Scales in Germany

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DOI	10.1029/2021JD035440
	Tropospheric NO2 and O3 Response to COVID-19 Lockdown Restrictions at the National and Urban Scales in Germany
	Balamurugan V.; Chen J.; Qu Z.; Bi X.; Gensheimer J.; Shekhar A.; Bhattacharjee S.; Keutsch F.N.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:19
英文摘要	This study estimates the influence of anthropogenic emission reductions on nitrogen dioxide ((Formula presented.)) and ozone ((Formula presented.)) concentration changes in Germany during the COVID-19 pandemic period using in-situ surface and Sentinel-5 Precursor TROPOspheric Monitoring Instrument (TROPOMI) satellite column measurements and GEOS-Chem model simulations. We show that reductions in anthropogenic emissions in eight German metropolitan areas reduced mean in-situ (& column) (Formula presented.) concentrations by 23 (Formula presented.) (& 16 (Formula presented.)) between March 21 and June 30, 2020 after accounting for meteorology, whereas the corresponding mean in-situ (Formula presented.) concentration increased by 4 (Formula presented.) between March 21 and May 31, 2020, and decreased by 3 (Formula presented.) in June 2020, compared to 2019. In the winter and spring, the degree of (Formula presented.) saturation of ozone production is stronger than in the summer. This implies that future reductions in (Formula presented.) emissions in these metropolitan areas are likely to increase ozone pollution during winter and spring if appropriate mitigation measures are not implemented. TROPOMI (Formula presented.) concentrations decreased nationwide during the stricter lockdown period after accounting for meteorology with the exception of North-West Germany which can be attributed to enhanced (Formula presented.) emissions from agricultural soils. © 2021. The Authors.
英文关键词	COVID-19; emission reduction; GEOS-Chem; nitrogen oxide; NOX-saturated; ozone
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236967
作者单位	Environmental Sensing and Modeling, Technical University of Munich (TUM), Munich, Germany; School of Engineering and Applied Science, Harvard University, Cambridge, MA, United States; Department of Environmental Systems Science, ETH Zurich, Zurich, Switzerland; Department of Information Technology, National Institute of Technology Karnataka, Surathkal, India; Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, United States
推荐引用方式 GB/T 7714	Balamurugan V.,Chen J.,Qu Z.,et al. Tropospheric NO2 and O3 Response to COVID-19 Lockdown Restrictions at the National and Urban Scales in Germany[J],2021,126(19).
APA	Balamurugan V..,Chen J..,Qu Z..,Bi X..,Gensheimer J..,...&Keutsch F.N..(2021).Tropospheric NO2 and O3 Response to COVID-19 Lockdown Restrictions at the National and Urban Scales in Germany.Journal of Geophysical Research: Atmospheres,126(19).
MLA	Balamurugan V.,et al."Tropospheric NO2 and O3 Response to COVID-19 Lockdown Restrictions at the National and Urban Scales in Germany".Journal of Geophysical Research: Atmospheres 126.19(2021).