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DOI	10.5194/acp-22-2745-2022
	Variability of nitrogen oxide emission fluxes and lifetimes estimated from Sentinel-5P TROPOMI observations
	Lange, Kezia; Richter, Andreas; Burrows, John P.
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	2745
结束页码	2767
卷号	22 期号:4 页码:23
英文摘要	Satellite observations of the high-resolution TROPOspheric Monitoring Instrument (TROPOMI) on Sentinel-5 Precursor can be used to observe nitrogen dioxide (NO2) at city scales to quantify short time variability of nitrogen oxide (NOx) emissions and lifetimes on a daily and seasonal basis. In this study, 2 years of TROPOMI tropospheric NO2 columns, having a spatial resolution of up to 3.5 km x 5.5 km, have been analyzed together with wind and ozone data. NOx lifetimes and emission fluxes are estimated for 50 different NOx sources comprising cities, isolated power plants, industrial regions, oil fields, and regions with a mix of sources distributed around the world. The retrieved NOx emissions are in agreement with other TROPOMI-based estimates and reproduce the variability seen in power plant stack measurements but are in general lower than the analyzed stack measurements and emission inventory results. Separation into seasons shows a clear seasonal dependence of NOx emissions with in general the highest emissions during winter, except for isolated power plants and especially sources in hot desert climates, where the opposite is found. The NO, lifetime shows a systematic latitudinal dependence with an increase in lifetime from 2 to 8 h with latitude but only a weak seasonal dependence. For most of the 50 sources including the city of Wuhan in China, a clear weekly pattern of NOx emissions is found, with weekend-to-weekday ratios of up to 0.5 but with a high variability for the different locations. During the Covid-19 lockdown period in 2020, strong reductions in the NOx emissions were observed for New Delhi, Buenos Aires, and Madrid.
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:000765680400001
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/273503
作者单位	University of Bremen
推荐引用方式 GB/T 7714	Lange, Kezia,Richter, Andreas,Burrows, John P.. Variability of nitrogen oxide emission fluxes and lifetimes estimated from Sentinel-5P TROPOMI observations[J],2022,22(4):23.
APA	Lange, Kezia,Richter, Andreas,&Burrows, John P..(2022).Variability of nitrogen oxide emission fluxes and lifetimes estimated from Sentinel-5P TROPOMI observations.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(4),23.
MLA	Lange, Kezia,et al."Variability of nitrogen oxide emission fluxes and lifetimes estimated from Sentinel-5P TROPOMI observations".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.4(2022):23.