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DOI	10.5194/acp-21-5807-2021
	Aerosol particle depolarization ratio at 1565 nm measured with a Halo Doppler lidar
	Vakkari V.; Baars H.; Bohlmann S.; Bühl J.; Komppula M.; Mamouri R.-E.; O'connor E.J.
发表日期	2021
ISSN	1680-7316
起始页码	5807
结束页码	5820
卷号	21 期号:8
英文摘要	The depolarization ratio is a valuable parameter for lidar-based aerosol categorization. Usually, the aerosol particle depolarization ratio is determined at relatively short wavelengths of 355 nm and/or 532 nm, but some multi-wavelength studies including longer wavelengths indicate strong spectral dependency. Here, we investigate the capabilities of Halo Photonics StreamLine Doppler lidars to retrieve the particle linear depolarization ratio at the 1565 nm wavelength. We utilize collocated measurements with another lidar system, PollyXT at Limassol, Cyprus, and at Kuopio, Finland, to compare the depolarization ratio observed by the two systems. For mineral-dust-dominated cases we find typically a slightly lower depolarization ratio at 1565 nm than at 355 and 532 nm. However, for dust mixed with other aerosol we find a higher depolarization ratio at 1565 nm. For polluted marine aerosol we find a marginally lower depolarization ratio at 1565 nm compared to 355 and 532 nm. For mixed spruce and birch pollen we find a slightly higher depolarization ratio at 1565 nm compared to 532 nm. Overall, we conclude that Halo Doppler lidars can provide a particle linear depolarization ratio at the 1565 nm wavelength at least in the lowest 2-3 km above ground. © Author(s) 2021.
语种	英语
scopus关键词	aerosol; coniferous tree; deciduous tree; Doppler lidar; measurement method; polarization; pollen; Cyprus; Finland; Kuopio; Limassol; Pohjois-Savo
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/246967
作者单位	Finnish Meteorological Institute, Helsinki, 00101, Finland; Atmospheric Chemistry Research Group, Chemical Resource Beneficiation, North-West University, Potchefstroom, South Africa; Leibniz Institute for Tropospheric Research, Leipzig, Germany; Finnish Meteorological Institute, Kuopio, 70211, Finland; Department of Applied Physics, University of Eastern Finland, Kuopio, Finland; Department of Civil Engineering and Geomatics, Cyprus University of Technology, Limassol, Cyprus; ERATOSTHENES Centre of Excellence, Limassol, Cyprus; Department of Meteorology, University of Reading, Reading, United Kingdom
推荐引用方式 GB/T 7714	Vakkari V.,Baars H.,Bohlmann S.,et al. Aerosol particle depolarization ratio at 1565 nm measured with a Halo Doppler lidar[J],2021,21(8).
APA	Vakkari V..,Baars H..,Bohlmann S..,Bühl J..,Komppula M..,...&O'connor E.J..(2021).Aerosol particle depolarization ratio at 1565 nm measured with a Halo Doppler lidar.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(8).
MLA	Vakkari V.,et al."Aerosol particle depolarization ratio at 1565 nm measured with a Halo Doppler lidar".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.8(2021).