气候变化领域集成服务门户(CCPortal): Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago

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DOI	10.5194/acp-19-10433-2019
	Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago
	Yu H.; Li W.; Zhang Y.; Tunved P.; Dall'osto M.; Shen X.; Sun J.; Zhang X.; Zhang J.; Shi Z.
发表日期	2019
ISSN	16807316
起始页码	10433
结束页码	10446
卷号	19 期号:15
英文摘要	Interaction of anthropogenic particles with radiation and clouds plays an important role in Arctic climate change. The mixing state of aerosols is a key parameter to influence aerosol radiation and aerosol-cloud interactions. However, little is known of this parameter in the Arctic, preventing an accurate representation of this information in global models. Here we used transmission electron microscopy with energy-dispersive X-ray spectrometry, scanning electron microscopy, nanoscale secondary ion mass spectrometry, and atomic forces microscopy to determine the size and mixing state of individual sulfate and carbonaceous particles at 100 nm to 2 collected in the Svalbard Archipelago in summer. We found that 74 % by number of non-sea-salt sulfate particles were coated with organic matter (OM); 20 % of sulfate particles also had soot inclusions which only appeared in the OM coating. The OM coating is estimated to contribute 63 % of the particle volume on average. To understand how OM coating influences optical properties of sulfate particles, a Mie core-shell model was applied to calculate optical properties of individual sulfate particles. Our result shows that the absorption cross section of individual OM-coated particles significantly increased when assuming the OM coating as light-absorbing brown carbon. Microscopic observations here suggest that OM modulates the mixing structure of fine Arctic sulfate particles, which may determine their hygroscopicity and optical properties. © 2019 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	aerosol; brown carbon; climate change; hygroscopicity; optical property; organic matter; particulate matter; soot; sulfate; transmission electron microscopy; Arctic; Svalbard; Svalbard and Jan Mayen
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/144213
作者单位	Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China; Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, 310027, China; Key Laboratory of Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing, 110016, China; Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, 10691, Sweden; Institute of Marine Sciences, ICM-CSIC, Passeig Marítim de la Barceloneta, 37-49, Barcelona, 08003, Spain; Key Laboratory of the Earth's Deep Interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom; Institute of Surface Earth System Science, Tianjin University, Tianjin, 300072, China
推荐引用方式 GB/T 7714	Yu H.,Li W.,Zhang Y.,et al. Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago[J],2019,19(15).
APA	Yu H..,Li W..,Zhang Y..,Tunved P..,Dall'osto M..,...&Shi Z..(2019).Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago.Atmospheric Chemistry and Physics,19(15).
MLA	Yu H.,et al."Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago".Atmospheric Chemistry and Physics 19.15(2019).