气候变化领域集成服务门户(CCPortal): Unexpected Biomass Burning Aerosol Absorption Enhancement Explained by Black Carbon Mixing State

CCPortal

DOI	10.1029/2020GL089055
	Unexpected Biomass Burning Aerosol Absorption Enhancement Explained by Black Carbon Mixing State
	Denjean C.; Brito J.; Libois Q.; Mallet M.; Bourrianne T.; Burnet F.; Dupuy R.; Flamant C.; Knippertz P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:19
英文摘要	Direct and semi-direct radiative effects of biomass burning aerosols (BBA) from southern and central African fires are still widely debated, in particular because climate models have been unsuccessful in reproducing the low single scattering albedo in BBA over the eastern Atlantic Ocean. Using state-of-the-art airborne in situ measurements and Mie scattering simulations, we demonstrate that low single scattering albedo in well-aged BBA plumes over southern West Africa results from the presence of strongly absorbing refractory black carbon (rBC), whereas the brown carbon contribution to the BBA absorption is negligible. Coatings enhance light absorption by rBC-containing particles by up to 210%. Our results show that accounting for the diversity in black carbon mixing state by combining internal and external configurations is needed to accurately estimate the optical properties and henceforth the shortwave direct radiative effect and heating rate of BBA over southern West Africa. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Aerosols; Climate models; Light absorption; Mixing; Optical properties; Solar radiation; Aerosol absorption; Biomass-burning; External configuration; In-situ measurement; Mie scattering; Radiative effects; Single scattering albedo; State of the art; Carbon; aerosol; biomass burning; black carbon; brown carbon; detection method; scattering; shortwave radiation; Atlantic Ocean; Atlantic Ocean (East); West Africa
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/169649
作者单位	CNRM, Université de Toulouse, Météo-France, CNRS, Toulouse, France; LaMP, Université de Clermont Auvergne, Clermont-Ferrand, France; IMT Lille Douai, Université de Lille, SAGE, Lille, France; LATMOS/IPSL, Sorbonne Université, UVSQ, CNRS, Paris, France; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
推荐引用方式 GB/T 7714	Denjean C.,Brito J.,Libois Q.,et al. Unexpected Biomass Burning Aerosol Absorption Enhancement Explained by Black Carbon Mixing State[J],2020,47(19).
APA	Denjean C..,Brito J..,Libois Q..,Mallet M..,Bourrianne T..,...&Knippertz P..(2020).Unexpected Biomass Burning Aerosol Absorption Enhancement Explained by Black Carbon Mixing State.Geophysical Research Letters,47(19).
MLA	Denjean C.,et al."Unexpected Biomass Burning Aerosol Absorption Enhancement Explained by Black Carbon Mixing State".Geophysical Research Letters 47.19(2020).