globalchange  > 气候减缓与适应
DOI: 10.1002/2013GL058976
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
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
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:
Citation statistics:
Document Type: 期刊论文
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.

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).
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Liu J.]'s Articles
[Scheuer E.]'s Articles
[Dibb J.]'s Articles
Similar articles in Baidu Scholar
[Liu J.]'s Articles
[Scheuer E.]'s Articles
[Dibb J.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Liu J.]‘s Articles
[Scheuer E.]‘s Articles
[Dibb J.]‘s Articles
Related Copyright Policies
所有评论 (0)

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.