DOI: 10.1002/2014GL062443
论文题名: The effect of complex black carbon microphysics on the determination of the optical properties of brown carbon
作者: Liu D. ; Taylor J.W. ; Young D.E. ; Flynn M.J. ; Coe H. ; Allan J.D.
刊名: Geophysical Research Letters
ISSN: 0094-9009
EISSN: 1944-8740
出版年: 2015
卷: 42, 期: 2 起始页码: 613
结束页码: 619
语种: 英语
英文关键词: black carbon
; brown carbon
; microphysics
; Mie
; RDG
Scopus关键词: Carbon
; Fuels
; Phase measurement
; Photoacoustic spectroscopy
; Refractive index
; Black carbon
; Brown carbons
; Microphysics
; Mie
; RDG
; Optical properties
; accuracy assessment
; brown carbon
; morphology
; optical property
; parameterization
; physical property
; England
; London [England]
; United Kingdom
英文摘要: Assessment of the impacts of brown carbon (BrC) requires accurate determination of its physical properties, but a model must be invoked to derive these from instrument data. Ambient measurements were made in London at a site influenced by traffic and solid fuel (principally wood) burning, apportioned by single particle soot photometer data and optical properties measured using multiwavelength photoacoustic spectroscopy. Two models were applied: a commonly used Mie model treating the particles as single-coated spheres and a Rayleigh-Debye-Gans approximation treating them as aggregates of smaller-coated monomers. The derived solid fuel BrC parameters at 405nm were found to be highly sensitive to the model treatment, with a mass absorption cross section ranging from 0.47 to 1.81m2/g and imaginary refractive index from 0.013 to 0.062. This demonstrates that a detailed knowledge of particle morphology must be obtained and invoked to accurately parameterize BrC properties based on aerosol phase measurements. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923632810&doi=10.1002%2f2014GL062443&partnerID=40&md5=812b771d141f2d01bad3eee32edd82b7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8625
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: School of Earth Atmospheric and Environmental Science, University of Manchester, Manchester, United Kingdom
Recommended Citation:
Liu D.,Taylor J.W.,Young D.E.,et al. The effect of complex black carbon microphysics on the determination of the optical properties of brown carbon[J]. Geophysical Research Letters,2015-01-01,42(2).