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DOI	10.5194/acp-19-10829-2019
	Specifying the light-absorbing properties of aerosol particles in fresh snow samples; collected at the Environmental Research Station Schneefernerhaus (UFS); Zugspitze
	Schnaiter M.; Linke C.; Ibrahim I.; Kiselev A.; Waitz F.; Leisner T.; Norra S.; Rehm T.
发表日期	2019
ISSN	16807316
起始页码	10829
结束页码	10844
卷号	19 期号:16
英文摘要	Atmospheric aerosol particles like mineral dust, volcanic ash and combustion particles can reduce Earth's snow and ice albedo considerably even by very small amounts of deposited particle mass. In this study, a new laboratory method is applied to measure the spectral light absorption coefficient of airborne particles that are released from fresh snow samples by an efficient nebulizing system. Three-wavelength photoacoustic absorption spectroscopy is combined with refractory black carbon (BC) mass analysis to determine the snow mass-specific and BC mass-specific absorption cross sections. Fullerene soot in water suspensions are used for the characterization of the method and for the determination of the mass-specific absorption cross section of this BC reference material. The analysis of 31 snow samples collected after fresh snowfall events at a high-altitude Alpine research station reveals a significant discrepancy between the measured snow mass-specific absorption cross section and the cross section that is expected from the BC mass data, indicating that non-BC light-absorbing particles are present in the snow. Mineral dust and brown carbon (BrC) are identified as possible candidates for the non-BC particle mass based on the wavelength dependence of the measured absorption. For one sample this result is confirmed by environmental scanning electron microscopy and by single-particle fluorescence measurements, which both indicate a high fraction of biogenic and organic particle mass in the sample. © Author(s) 2019.
语种	英语
scopus关键词	absorption; aerosol; albedo; black carbon; dust; laboratory method; particulate matter; snow; soot; volcanic ash; Alps; Bavaria; Bavarian Alps; Central Alps; Wetterstein Mountains; Zugspitze
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/144190
作者单位	Institute of Meteorology and Climate Research, Atmospheric Aerosol Research, KIT, Karlsruhe, Germany; SchnaiTEC GmbH, Karlsruhe, Germany; Institute of Geography and Geoecology, KIT, Karlsruhe, Germany; Environmental Research Station Schneefernerhaus (UFS), Zugspitze, Germany
推荐引用方式 GB/T 7714	Schnaiter M.,Linke C.,Ibrahim I.,et al. Specifying the light-absorbing properties of aerosol particles in fresh snow samples; collected at the Environmental Research Station Schneefernerhaus (UFS); Zugspitze[J],2019,19(16).
APA	Schnaiter M..,Linke C..,Ibrahim I..,Kiselev A..,Waitz F..,...&Rehm T..(2019).Specifying the light-absorbing properties of aerosol particles in fresh snow samples; collected at the Environmental Research Station Schneefernerhaus (UFS); Zugspitze.Atmospheric Chemistry and Physics,19(16).
MLA	Schnaiter M.,et al."Specifying the light-absorbing properties of aerosol particles in fresh snow samples; collected at the Environmental Research Station Schneefernerhaus (UFS); Zugspitze".Atmospheric Chemistry and Physics 19.16(2019).