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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). |
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