globalchange  > 气候减缓与适应
DOI: 10.1038/NGEO3018
论文题名:
Comprehensive characterization of atmospheric organic carbon at a forested site
作者: Hunter J.F.; Day D.A.; Palm B.B.; Yatavelli R.L.N.; Chan A.W.H.; Kaser L.; Cappellin L.; Hayes P.L.; Cross E.S.; Carrasquillo A.J.; Campuzano-Jost P.; Stark H.; Zhao Y.; Hohaus T.; Smith J.N.; Hansel A.; Karl T.; Goldstein A.H.; Guenther A.; Worsnop D.R.; Thornton J.A.; Heald C.L.; Jimenez J.L.; Kroll J.H.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2017
卷: 10, 期:10
起始页码: 748
结束页码: 753
语种: 英语
Scopus关键词: aerosol formation ; chemical property ; coniferous forest ; data set ; deposition ; emission ; forest ; hydroxyl radical ; organic carbon ; oxidant ; oxidation ; spectrometry
英文摘要: Atmospheric organic compounds are central to key chemical processes that influence air quality, ecological health, and climate. However, longstanding difficulties in predicting important quantities such as organic aerosol formation and oxidant lifetimes indicate that our understanding of atmospheric organic chemistry is fundamentally incomplete, probably due in part to the presence of organic species that are unmeasured using standard analytical techniques. Here we present measurements of a wide range of atmospheric organic compounds - including previously unmeasured species - taken concurrently at a single site (a ponderosa pine forest during summertime) by five state-of-the-art mass spectrometric instruments. The combined data set provides a comprehensive characterization of atmospheric organic carbon, covering a wide range in chemical properties (volatility, oxidation state, and molecular size), and exhibiting no obvious measurement gaps. This enables the first construction of a measurement-based local organic budget, highlighting the high emission, deposition, and oxidation fluxes in this environment. Moreover, previously unmeasured species, including semivolatile and intermediate-volatility organic species (S/IVOCs), account for one-third of the total organic carbon, and (within error) provide closure on both OH reactivity and potential secondary organic aerosol formation. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105698
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO, United States; California Air Resources Board, El Monte, CA, United States; Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, United States; Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada; Institute for Ion Physics and Applied Physics, University of Innsbruck, Innsbruck, Austria; National Center for Atmospheric Research, Atmospheric Chemistry Observations and Modeling Division, Boulder, CO, United States; Research and Innovation Centre, Fondazione Edmund Mach, S. Michele all'Adige, Italy; School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, United States; Département de Chimie, Université de Montréal, Montréal, QC, Canada; Aerodyne Research Inc., Billerica, MA, United States; Department of Mechanical Engineering, Carnegie Mellon University, Pittsburgh, PA, United States; Department of Energy and Climate Research, IEK-8: Troposphere, Forschungszentrum Juelich, Juelich, Germany; Department of Chemistry, University of California, Irvine, CA, United States; Institute of Atmospheric and Cryospheric Sciences, University of Innsbruck, Innsbruck, Austria; Department of Earth System Science, University of California, Irvine, CA, United States; Department of Physics, University of Helsinki, Helsinki, Finland; Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Department of Atmospheric Sciences, University OfWashington, Seattle, WA, United States; Department of Earth, Atmospheric, and Planetary Science, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States

Recommended Citation:
Hunter J.F.,Day D.A.,Palm B.B.,et al. Comprehensive characterization of atmospheric organic carbon at a forested site[J]. Nature Geoscience,2017-01-01,10(10)
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