gchange  > 气候减缓与适应
DOI: 10.1002/2013GL058976
Title:
Brown carbon in the continental troposphere
Author: Liu J.; Scheuer E.; Dibb J.; Ziemba L.D.; Thornhill K.L.; Anderson B.E.; Wisthaler A.; Mikoviny T.; Devi J.J.; Bergin M.; Weber R.J.
Source Publication: Geophysical Research Letters
ISSN: 0094-10259
EISSN: 1944-9990
Indexed By: SCI-E ; EI
Publishing Year: 2014
Volume: 41, Issue:6
pages begin: 2191
pages end: 2195
Language: 英语
Keyword: aerosol light absorption ; brown carbon ; direct radiative forcing
Scopus Keyword: Atmospheric radiation ; Carbon ; Light absorption ; Troposphere ; Aerosol light absorption ; Brown carbons ; Direct aerosol radiative forcing ; Direct radiative forcing ; Particulate filters ; Particulate organic compounds ; Radiative transfer model ; Tropospheric columns ; Aerosols ; aerosol property ; biomass burning ; black carbon ; particulate organic matter ; radiative forcing ; radiative transfer ; troposphere ; vertical profile ; United States
Subject in Chinese: 大气科学 ; ; 有机物 ; 气溶胶 ; 大气辐射 ; 吸收 ; 辐射强迫[作用]) ; 生物量 ; 生物质燃烧 ; 吸附作用
Subject: ATMOSPHERE ; CARBON ; ORGANIC MATTER ; AEROSOLS ; ATMOSPHERIC RADIATION ; ABSORPTION ; RADIATIVE FORCING ; BIOMASS ; BIOMASS BURNING
English Abstract: Little is known about the optical significance of light absorbing particulate organic compounds (i.e., brown carbon, BrC), including the importance relative to black carbon (BC) and influence on direct radiative forcing by aerosols. The vertical profile of BrC affects its radiative forcing, yet the distribution of BrC in the free troposphere is largely unknown. In this study, BrC absorption was directly measured in solvent extracts of particulate filters obtained from aircraft sampling over the continental USA. Excluding biomass burning plumes, BrC was observed throughout the tropospheric column (<13 km), and its prevalence increased relative to BC with increasing altitude, indicating contributions from secondary sources. Closure analysis showed good agreement between light absorption from BC plus BrC relative to measured total aerosol absorption. A radiative transfer model indicated that BrC absorption reduced top of atmosphere aerosol forcing by ∼20%, suggesting that it is an important component of direct aerosol radiative forcing. © 2014. American Geophysical Union. All Rights Reserved.
Related Link: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84896411944&doi=10.1002%2f2013GL058976&partnerID=40&md5=46dbb3ec6cea45a396e3bbbc70d4870d
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被引频次[WOS]:59   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.177/globalchange/handle/2HF3EXSE/7523
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Affiliation: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States

Recommended Citation:
Liu J.,Scheuer E.,Dibb J.,et al. Brown carbon in the continental troposphere[J]. Geophysical Research Letters,2014-01-01,41(6).
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