气候变化领域集成服务门户(CCPortal): Global Measurements of Brown Carbon and Estimated Direct Radiative Effects

CCPortal

DOI	10.1029/2020GL088747
	Global Measurements of Brown Carbon and Estimated Direct Radiative Effects
	Zeng L.; Zhang A.; Wang Y.; Wagner N.L.; Katich J.M.; Schwarz J.P.; Schill G.P.; Brock C.; Froyd K.D.; Murphy D.M.; Williamson C.J.; Kupc A.; Scheuer E.; Dibb J.; Weber R.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:13
英文摘要	Brown carbon (BrC) is an organic aerosol material that preferentially absorbs light of shorter wavelengths. Global-scale radiative impacts of BrC have been difficult to assess due to the lack of BrC observational data. To address this, aerosol filters were continuously collected with near pole-to-pole latitudinal coverage over the Pacific and Atlantic basins in three seasons as part of the Atmospheric Tomography Mission. BrC chromophores in filter extracts were measured. We find that globally, BrC was highly spatially heterogeneous, mostly detected in air masses that had been transported from regions of extensive biomass burning. We calculate the average direct radiative effect due to BrC absorption accounted for approximately 7% to 48% of the top of the atmosphere clear-sky instantaneous forcing by all absorbing carbonaceous aerosols in the remote atmosphere, indicating that BrC from biomass burning is an important component of the global radiative balance. © 2020. The Authors.
英文关键词	Aerosols; Carbon; Chromophores; Poles; Atmospheric tomography; Carbonaceous aerosol; Global measurements; Observational data; Radiative effects; Radiative impacts; Shorter wavelength; Top of the atmospheres; Bromine compounds; absorption; aerosol; air mass; biomass burning; brown carbon; clear sky; climate forcing; estimation method; heterogeneity; measurement method; radiative forcing; tomography; wavelength; Atlantic Ocean; Pacific Ocean
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170180
作者单位	School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States; Chemical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, CO, United States; Faculty of Physics, University of Vienna, Vienna, Austria; Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH, United States
推荐引用方式 GB/T 7714	Zeng L.,Zhang A.,Wang Y.,et al. Global Measurements of Brown Carbon and Estimated Direct Radiative Effects[J],2020,47(13).
APA	Zeng L..,Zhang A..,Wang Y..,Wagner N.L..,Katich J.M..,...&Weber R.J..(2020).Global Measurements of Brown Carbon and Estimated Direct Radiative Effects.Geophysical Research Letters,47(13).
MLA	Zeng L.,et al."Global Measurements of Brown Carbon and Estimated Direct Radiative Effects".Geophysical Research Letters 47.13(2020).