气候变化领域集成服务门户(CCPortal): NOx Emissions Reduction and Rebound in China Due to the COVID-19 Crisis

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DOI	10.1029/2020GL089912
	NOx Emissions Reduction and Rebound in China Due to the COVID-19 Crisis
	Ding J.; van der A R.J.; Eskes H.J.; Mijling B.; Stavrakou T.; van Geffen J.H.G.M.; Veefkind J.P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	During the COVID-19 lockdown (24 January–20 March) in China low air pollution levels were reported in the media as a consequence of reduced economic and social activities. Quantification of the pollution reduction is not straightforward due to effects of transport, meteorology, and chemistry. We have analyzed the NOx emission reductions calculated with an inverse algorithm applied to daily NO2 observations from TROPOMI onboard the Copernicus Sentinel-5P satellite. This method allows the quantification of emission reductions per city and the analysis of emissions of maritime transport and of the energy sector separately. The reductions we found are 20–50% for cities, about 40% for power plants, and 15–40% for maritime transport depending on the region. The reduction in both emissions and concentrations shows a similar timeline consisting of a sharp reduction (34–50%) around the Spring festival and a slow recovery from mid-February to mid-March. ©2020. The Authors.
英文关键词	Emission control; Inverse problems; Emission reduction; Energy sector; Inverse algorithm; Maritime transport; NOx emissions; Pollution level; Pollution reduction; Social activities; Nitrogen oxides; air quality; atmospheric pollution; emission control; festival; nitrogen dioxide; pollution monitoring; satellite sensor; Sentinel; viral disease; China
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169637
作者单位	Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands; School of Atmospheric Physics, Nanjing University of Information Science and Technology (NUIST), Nanjing, China; Royal Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium; Department of Geoscience and Remote Sensing, Delft University of Technology, Delft, Netherlands
推荐引用方式 GB/T 7714	Ding J.,van der A R.J.,Eskes H.J.,et al. NOx Emissions Reduction and Rebound in China Due to the COVID-19 Crisis[J],2020,47(19).
APA	Ding J..,van der A R.J..,Eskes H.J..,Mijling B..,Stavrakou T..,...&Veefkind J.P..(2020).NOx Emissions Reduction and Rebound in China Due to the COVID-19 Crisis.Geophysical Research Letters,47(19).
MLA	Ding J.,et al."NOx Emissions Reduction and Rebound in China Due to the COVID-19 Crisis".Geophysical Research Letters 47.19(2020).