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DOI	10.5194/acp-20-5645-2020
	New particle formation and sub-10 nm size distribution measurements during the A-LIFE field experiment in Paphos; Cyprus
	Brilke S.; Fölker N.; Müller T.; Kandler K.; Gong X.; Peischl J.; Weinzierl B.; Winkler P.M.
发表日期	2020
ISSN	1680-7316
起始页码	5645
结束页码	5656
卷号	20 期号:9
英文摘要	Atmospheric particle size distributions were measured in Paphos, Cyprus, during the A-LIFE (absorbing aerosol layers in a changing climate: ageing, lifetime and dynamics) field experiment from 3 to 30 April 2017. The newly developed differential mobility analyser train (DMAtrain) was deployed for the first time in an atmospheric environment for the direct measurement of the nucleation mode size range between 1.8 and 10 nm diameter. The DMA-train set-up consists of seven size channels, of which five are set to fixed particle mobility diameters and two additional diameters are obtained by alternating voltage settings in one DMA every 10 s. In combination with a conventional mobility particle size spectrometer (MPSS) and an aerodynamic particle sizer (APS) the complete atmospheric aerosol size distribution from 1.8 nm to 10 μ m was covered. The focus of the A-LIFE study was to characterize new particle formation (NPF) in the eastern Mediterranean region at a measurement site with strong local pollution sources. The nearby Paphos airport was found to be a large emission source for nucleation mode particles, and we analysed the size distribution of the airport emission plumes at approximately 500 m from the main runway. The analysis yielded nine NPF events in 27 measurement days from the combined analysis of the DMAtrain, MPSS and trace gas monitors. Growth rate calculations were performed, and a size dependency of the initial growth rate (< 10 nm) was observed for one event case. Fast changes of the sub-10 nm size distribution on a timescale of a few minutes were captured by the DMA-train measurement during early particle growth and are discussed in a second event case. In two cases, particle formation and growth were detected in the nucleation mode size range which did not exceed the 10 nm threshold. This finding implies that NPF likely occurs more frequently than estimated from studies where the lower nanometre size regime is not covered by the size distribution measurements. © 2020 Author(s).
语种	英语
scopus关键词	aerodynamics; aerosol formation; experimental study; formation mechanism; nucleation; particle size; pollutant source; size distribution; spectrometer; Cyprus; Mediterranean Region; Paphos
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/141351
作者单位	Faculty of Physics, University of Vienna, Vienna, 1090, Austria; Leibniz Institute for Tropospheric Research E.V. (TROPOS), Leipzig, 04318, Germany; Technical University Darmstadt, Darmstadt, 64287, Germany; Cooperative Institute for Research in Environmental Studies, University of Colorado Boulder, Boulder, CO 80309, United States; NOAA Earth System Research Laboratory, Chemical Science Division, Boulder, CO 80305, United States
推荐引用方式 GB/T 7714	Brilke S.,Fölker N.,Müller T.,et al. New particle formation and sub-10 nm size distribution measurements during the A-LIFE field experiment in Paphos; Cyprus[J],2020,20(9).
APA	Brilke S..,Fölker N..,Müller T..,Kandler K..,Gong X..,...&Winkler P.M..(2020).New particle formation and sub-10 nm size distribution measurements during the A-LIFE field experiment in Paphos; Cyprus.Atmospheric Chemistry and Physics,20(9).
MLA	Brilke S.,et al."New particle formation and sub-10 nm size distribution measurements during the A-LIFE field experiment in Paphos; Cyprus".Atmospheric Chemistry and Physics 20.9(2020).