气候变化领域集成服务门户(CCPortal): Measurement report: Balloon-borne in situ profiling of Saharan dust over Cyprus with the UCASS optical particle counter

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DOI	10.5194/acp-21-6781-2021
	Measurement report: Balloon-borne in situ profiling of Saharan dust over Cyprus with the UCASS optical particle counter
	Kezoudi M.; Tesche M.; Smith H.; Tsekeri A.; Baars H.; Dollner M.; Estelle´; s V.; Bu&die; hl J.; Weinzierl B.; Ulanowski Z.; Mu&die; ller D.; Amiridis V.
发表日期	2021
ISSN	1680-7316
起始页码	6781
结束页码	6797
卷号	21 期号:9
英文摘要	This paper presents measurements of mineral dust concentration in the diameter range from 0.4 to 14.0 μm with a novel balloon-borne optical particle counter, the Universal Cloud and Aerosol Sounding System (UCASS). The balloon launches were coordinated with ground-based active and passive remote-sensing observations and airborne in situ measurements with a research aircraft during a Saharan dust outbreak over Cyprus from 20 to 23 April 2017. The aerosol optical depth at 500 nm reached values up to 0.5 during that event over Cyprus, and particle number concentrations were as high as 50 cm..3 for the diameter range between 0.8 and 13.9 μm. Comparisons of the total particle number concentration and the particle size distribution from two cases of balloon-borne measurements with aircraft observations show reasonable agreement in magnitude and shape despite slight mismatches in time and space. While column-integrated size distributions from balloon-borne measurements and groundbased remote sensing show similar coarse-mode peak concentrations and diameters, they illustrate the ambiguity related to the missing vertical information in passive sun photometer observations. Extinction coefficient inferred from the balloon-borne measurements agrees with those derived from coinciding Raman lidar observations at height levels with particle number concentrations smaller than 10 cm-3for the diameter range from 0.8 to 13.9 μm. An overestimation of the UCASS-derived extinction coefficient of a factor of 2 compared to the lidar measurement was found for layers with particle number concentrations that exceed 25 cm-3, i.e. in the centre of the dust plume where particle concentrations were highest. This is likely the result of a variation in the refractive index and the shape and size dependency of the extinction efficiency of dust particles along the UCASS measurements. In the future, profile measurements of the particle number concentration and particle size distribution with the UCASS could provide a valuable addition to the measurement capabilities generally used in field experiments that are focussed on the observation of coarse aerosols and clouds. © 2021 Author(s). © 2021 EDP Sciences. All rights reserved.
语种	英语
scopus关键词	balloon observation; concentration (composition); dust; efficiency measurement; in situ measurement; lidar; optical depth; particle size; remote sensing; size distribution; Cyprus
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/246919
作者单位	Climate and Atmosphere Research Center (CARE-C), Cyprus Institute, Nicosia, Cyprus; Centre for Atmospheric and Climate Physics Research (CACP), University of Hertfordshire, Hatfield, United Kingdom; National Observatory of Athens, Athens, Greece; Leibniz Institute for Tropospheric Research, Leipzig, Germany; Faculty of Physics, Aerosol Physics and Environmental Physics, University of Vienna, Vienna, Austria; Earth Physics and Thermodynamics Department, University of Valencia, Valencia, Spain; ISAC-CNR, Rome, Italy; School of Earth and Environmental Sciences, University of Manchester, Manchester, United Kingdom; British Antarctic Survey, NERC, Cambridge, United Kingdom; Leipzig Institute for Meteorology (LIM), Leipzig University, Leipzig, Germany; TruLife Optics Ltd, London, United Kingdom
推荐引用方式 GB/T 7714	Kezoudi M.,Tesche M.,Smith H.,et al. Measurement report: Balloon-borne in situ profiling of Saharan dust over Cyprus with the UCASS optical particle counter[J],2021,21(9).
APA	Kezoudi M..,Tesche M..,Smith H..,Tsekeri A..,Baars H..,...&Amiridis V..(2021).Measurement report: Balloon-borne in situ profiling of Saharan dust over Cyprus with the UCASS optical particle counter.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(9).
MLA	Kezoudi M.,et al."Measurement report: Balloon-borne in situ profiling of Saharan dust over Cyprus with the UCASS optical particle counter".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.9(2021).