气候变化领域集成服务门户(CCPortal): Formation and composition of the UTLS aerosol

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DOI	10.1038/s41612-019-0097-1
	Formation and composition of the UTLS aerosol
	Martinsson B.G.; Friberg J.; Sandvik O.S.; Hermann M.; van Velthoven P.F.J.; Zahn A.
发表日期	2019
ISSN	23973722
卷号	2 期号:1
英文摘要	Stratospheric aerosol has long been seen as a pure mixture of sulfuric acid and water. Recent measurements, however, found a considerable carbonaceous fraction extending at least 8 km into the stratosphere. This fraction affects the aerosol optical depth (AOD) and the radiative properties, and hence the radiative forcing and climate impact of the stratospheric aerosol. Here we present an investigation based on a decade (2005–2014) of airborne aerosol sampling at 9–12 km altitude in the tropics and the northern hemisphere (NH) aboard the IAGOS-CARIBIC passenger aircraft. We find that the chemical composition of tropospheric aerosol in the tropics differs markedly from that at NH midlatitudes, and, that the carbonaceous stratospheric aerosol is oxygen-poor compared to the tropospheric aerosol. Furthermore, the carbonaceous and sulfurous components of the aerosol in the lowermost stratosphere (LMS) show strong increases in concentration connected with springtime subsidence from overlying stratospheric layers. The LMS concentrations significantly exceed those in the troposphere, thus clearly indicating a stratospheric production of not only the well-established sulfurous aerosol, but also a considerable but less understood carbonaceous component. © 2019, The Author(s).
语种	英语
scopus关键词	aerosol; chemical composition; Northern Hemisphere; optical depth; radiative forcing; stratosphere; troposphere
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178077
作者单位	Division of Nuclear Physics, Lund University, Lund, Sweden; Leibniz Institute for Tropospheric Research, Leipzig, Germany; Royal Netherlands Meteorological Institute (KNMI), De Bilt, Netherlands; Institute of Meteorology and Climate Research, Karlsruhe Institute of Technology, Karlsruhe, Germany
推荐引用方式 GB/T 7714	Martinsson B.G.,Friberg J.,Sandvik O.S.,et al. Formation and composition of the UTLS aerosol[J],2019,2(1).
APA	Martinsson B.G.,Friberg J.,Sandvik O.S.,Hermann M.,van Velthoven P.F.J.,&Zahn A..(2019).Formation and composition of the UTLS aerosol.npj Climate and Atmospheric Science,2(1).
MLA	Martinsson B.G.,et al."Formation and composition of the UTLS aerosol".npj Climate and Atmospheric Science 2.1(2019).