气候变化领域集成服务门户(CCPortal): Individual Particle Characteristics, Optical Properties and Evolution of an Extreme Long-Range Transported Biomass Burning Event in the European Arctic (Ny-Ålesund, Svalbard Islands)

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DOI	10.1029/2019JD031535
	Individual Particle Characteristics, Optical Properties and Evolution of an Extreme Long-Range Transported Biomass Burning Event in the European Arctic (Ny-Ålesund, Svalbard Islands)
	Moroni B.; Ritter C.; Crocchianti S.; Markowicz K.; Mazzola M.; Becagli S.; Traversi R.; Krejci R.; Tunved P.; Cappelletti D.
发表日期	2020
ISSN	2169897X
卷号	125 期号:5
英文摘要	This paper reports an exceptional biomass burning (BB) advection event from Alaska registered at Ny-Ålesund from 10 to 17 July 2015 with particular interest on the influence of the airborne particle characteristics on the optical properties of the aerosol during the event. To this purpose we considered two DEKATI 12-stage aerosol samples spanning the entire advection and analyzed them by scanning electron microscopy techniques. Aerosol chemical data and microphysical properties were also evaluated in order to correlate any change of individual particle characteristics with the bulk properties of the aerosol. The results of individual particle analysis depict a complex event characterized by a first phase (P1) of massive input of BB carbonaceous particles (i.e., tar balls, popcorn refractory particles, and organic particles), and by a second phase (P2) dominated by inorganic salts. The peculiar feature of this BB event is the exceptionally large grain size of the subspherical organic particles at the beginning of the event with respect to the background. At these conditions a significant increase of the scattering efficiency may occur even for a small increase of the size parameter. Results of the simulation of the complex refractive indices (n-ik) confirm this evaluation. Aerosol evolution during the event resulted from the combination of three distinct occurrences: (a) progressive rotation of air mass circulation toward non-BB source areas, (b) development of a thick fog layer in the planetary boundary layer, and (c) sea salt spray direct advection of local/regional provenance. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	aerosol evolution; aerosol optical properties; closure studies; particle size distribution; SEM-EDS
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186145
作者单位	Department of Chemistry, Biology and Biotechnology, University of Perugia, Perugia, Italy; Alfred Wegener Institute, Helmoltz Centre for Polar and Marine Research, Potsdam, Germany; Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland; Institute of Polar Science, The National Research Council of Italy, Bologna, Italy; Department of Chemistry, University of Florence, Sesto Fiorentino, Italy; Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden
推荐引用方式 GB/T 7714	Moroni B.,Ritter C.,Crocchianti S.,et al. Individual Particle Characteristics, Optical Properties and Evolution of an Extreme Long-Range Transported Biomass Burning Event in the European Arctic (Ny-Ålesund, Svalbard Islands)[J],2020,125(5).
APA	Moroni B..,Ritter C..,Crocchianti S..,Markowicz K..,Mazzola M..,...&Cappelletti D..(2020).Individual Particle Characteristics, Optical Properties and Evolution of an Extreme Long-Range Transported Biomass Burning Event in the European Arctic (Ny-Ålesund, Svalbard Islands).Journal of Geophysical Research: Atmospheres,125(5).
MLA	Moroni B.,et al."Individual Particle Characteristics, Optical Properties and Evolution of an Extreme Long-Range Transported Biomass Burning Event in the European Arctic (Ny-Ålesund, Svalbard Islands)".Journal of Geophysical Research: Atmospheres 125.5(2020).