气候变化领域集成服务门户(CCPortal): Radiative absorption enhancements due to the mixing state of atmospheric black carbon

CCPortal

DOI	10.1126/science.1223447
	Radiative absorption enhancements due to the mixing state of atmospheric black carbon
	Cappa C.D.; Onasch T.B.; Massoli P.; Worsnop D.R.; Bates T.S.; Cross E.S.; Davidovits P.; Hakala J.; Hayden K.L.; Jobson B.T.; Kolesar K.R.; Lack D.A.; Lerner B.M.; Li S.-M.; Mellon D.; Nuaaman I.; Olfert J.S.; Petäjä T.; Quinn P.K.; Song C.; Subramanian R.; Williams E.J.; Zaveri R.A.
发表日期	2012
ISSN	0036-8075
起始页码	1078
结束页码	1081
卷号	337 期号:6098
英文摘要	Atmospheric black carbon (BC) warms Earth's climate, and its reduction has been targeted for near-term climate change mitigation. Models that include forcing by BC assume internal mixing with non-BC aerosol components that enhance BC absorption, often by a factor of ∼2; such model estimates have yet to be clearly validated through atmospheric observations. Here, direct in situ measurements of BC absorption enhancements (Eabs) and mixing state are reported for two California regions. The observed Eabs is small - 6% on average at 532 nm - and increases weakly with photochemical aging. The Eabs is less than predicted from observationally constrained theoretical calculations, suggesting that many climate models may overestimate warming by BC. These ambient observations stand in contrast to laboratory measurements that show substantial Eabs for BC are possible.
英文关键词	atmospheric black carbon; black carbon; unclassified drug; absorption; aerosol; atmospheric modeling; black carbon; climate change; climate modeling; emission control; in situ measurement; radiative forcing; aerosol; article; climate change; observation; prediction; priority journal; radiation absorption; United States; California; United States
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243234
作者单位	Department of Civil and Environmental Engineering, University of California, Davis, CA 95616, United States; Aerodyne Research, Billerica, MA 01821, United States; Department of Chemistry, Boston College, Boston, MA 02467, United States; Department of Physics, University of Helsinki, Helsinki FI-00014, Finland; National Oceanic and Atmospheric Administration (NOAA) Pacific Marine Environmental Laboratory, Seattle, WA 98115, United States; Air Quality Research Division, Environment Canada, Toronto M3H 5T4, Canada; Department of Civil and Environmental Engineering, Washington State University, Pullman, WA 99164, United States; NOAA Earth System Research Laboratory, Boulder, CO 80305, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, United States; Centre for Atmospheric Chemistry, York University, Toronto M3J 1P3, Canada; Department of Mechanical Engineering, University of Alberta, Edmonton T6G 2R3, Canada; Atmospheric Sciences and Global...
推荐引用方式 GB/T 7714	Cappa C.D.,Onasch T.B.,Massoli P.,et al. Radiative absorption enhancements due to the mixing state of atmospheric black carbon[J],2012,337(6098).
APA	Cappa C.D..,Onasch T.B..,Massoli P..,Worsnop D.R..,Bates T.S..,...&Zaveri R.A..(2012).Radiative absorption enhancements due to the mixing state of atmospheric black carbon.Science,337(6098).
MLA	Cappa C.D.,et al."Radiative absorption enhancements due to the mixing state of atmospheric black carbon".Science 337.6098(2012).