Substantial Underestimation of Post-Harvest Burning Emissions in the   North China Plain Revealed by Multi-Species Space Observations

doi:10.1038/srep32307

CORC > 北京大学 > 环境科学与工程学院

	Substantial Underestimation of Post-Harvest Burning Emissions in the North China Plain Revealed by Multi-Species Space Observations
	Stavrakou, T. ; Mueller, J.F. ; Bauwens, M. ; De Smedt, I. ; Lerot, C. ; Van Roozendael, M. ; Coheur, P.F. ; Clerbaux, C. ; Boersma, K. F. ; van der A, R. ; Song, Y.
刊名	SCIENTIFIC REPORTS
	2016
关键词	OZONE MONITORING INSTRUMENT VOLATILE ORGANIC-COMPOUNDS FORMALDEHYDE COLUMNS HIGH-RESOLUTION LABORATORY MEASUREMENTS ASSIMILATION SYSTEM ISOPRENE EMISSIONS SOUTH-AMERICA GLOBAL-MODEL RIVER DELTA
DOI	10.1038/srep32307
英文摘要	The large-scale burning of crop residues in the North China Plain (NCP), one of the most densely populated world regions, was recently recognized to cause severe air pollution and harmful health effects. A reliable quantification of the magnitude of these fires is needed to assess regional air quality. Here, we use an eight-year record (2005-2012) of formaldehyde measurements from space to constrain the emissions of volatile organic compounds (VOCs) in this region. Using inverse modelling, we derive that satellite-based post-harvest burning fluxes are, on average, at least a factor of 2 higher than state-of-the-art bottom-up statistical estimates, although with significant interannual variability. Crop burning is calculated to cause important increases in surface ozone (+7%) and fine aerosol concentrations (+ 18%) in the North China Plain in June. The impact of crop fires is also found in satellite observations of other species, glyoxal, nitrogen dioxide and methanol, and we show that those measurements validate the magnitude of the top-down fluxes. Our study indicates that the top-down crop burning fluxes of VOCs in June exceed by almost a factor of 2 the combined emissions from other anthropogenic activities in this region, underscoring the need for targeted actions towards changes in agricultural management practices.; projects PRODEX ACROSAT of the European Space Agency - Belgian Science Policy Office; GlobEmission - European Space Agency; Sino-European MARCOPOLO project - European Commission within the Seventh Framework Programme [606593]; SCI(E); PubMed; ARTICLE; Trissevgeni.Stavrakou@aeronomie.be; 32307; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/491522]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Stavrakou, T.,Mueller, J.F.,Bauwens, M.,et al. Substantial Underestimation of Post-Harvest Burning Emissions in the North China Plain Revealed by Multi-Species Space Observations[J]. SCIENTIFIC REPORTS,2016.
APA	Stavrakou, T..,Mueller, J.F..,Bauwens, M..,De Smedt, I..,Lerot, C..,...&Song, Y..(2016).Substantial Underestimation of Post-Harvest Burning Emissions in the North China Plain Revealed by Multi-Species Space Observations.SCIENTIFIC REPORTS.
MLA	Stavrakou, T.,et al."Substantial Underestimation of Post-Harvest Burning Emissions in the North China Plain Revealed by Multi-Species Space Observations".SCIENTIFIC REPORTS (2016).