气候变化领域集成服务门户(CCPortal): Optical properties of meteoric smoke analogues

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DOI	10.5194/acp-19-12767-2019
	Optical properties of meteoric smoke analogues
	Aylett T.; Brooke J.S.A.; James A.D.; Nachbar M.; Duft D.; Leisner T.; Plane J.M.C.
发表日期	2019
ISSN	16807316
起始页码	12767
结束页码	12777
卷号	19 期号:19
英文摘要	Accurate determination of the optical properties of analogues for meteoric smoke particles (MSPs), which are thought to be composed of iron-rich oxides or silicates, is important for their observation and characterization in the atmosphere. In this study, a photochemical aerosol flow system (PAFS) has been used to measure the optical extinction of iron oxide MSP analogues in the wavelength range 325-675 nm. The particles were made photochemically and agglomerate into fractal-like particles with sizes on the order of 100 nm. Analysis using transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX) and electron energy loss spectroscopy (EELS) suggested the particles were most likely maghemite-like (γ-Fe2O3) in composition, though a magnetite-like composition could not be completely ruled out. Assuming a maghemite-like composition, the optical extinction coefficients measured using the PAFS were combined with maghemite absorption coefficients measured using a complementary experimental system (the MICE-TRAPS) to derive complex refractive indices that reproduce both the measured absorption and extinction. © 2019 Author(s).
语种	英语
scopus关键词	absorption; aerosol property; optical property; photochemistry; smoke; Mus
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/144097
作者单位	School of Chemistry, University of Leeds, Leeds, United Kingdom; Institute for Meteorology and Climate Research, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany; Institute of Environmental Physics (IUP), Ruprecht-Karls-University Heidelberg, Heidelberg, Germany
推荐引用方式 GB/T 7714	Aylett T.,Brooke J.S.A.,James A.D.,et al. Optical properties of meteoric smoke analogues[J],2019,19(19).
APA	Aylett T..,Brooke J.S.A..,James A.D..,Nachbar M..,Duft D..,...&Plane J.M.C..(2019).Optical properties of meteoric smoke analogues.Atmospheric Chemistry and Physics,19(19).
MLA	Aylett T.,et al."Optical properties of meteoric smoke analogues".Atmospheric Chemistry and Physics 19.19(2019).