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Proceedings Paper

Determination of nocturnal aerosol properties from a combination of lunar photometer and lidar observations
Author(s): Donghui Li; Zhengqiang Li; Yang Lv; Ying Zhang; Kaitao Li; Hua Xu
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Paper Abstract

Aerosol plays a key role in the assessment of global climate change and environmental health, while observation is one of important way to deepen the understanding of aerosol properties. In this study, the newly instrument – lunar photometer is used to measure moonlight and nocturnal column aerosol optical depth (AOD, τ) is retrieved. The AOD algorithm is test and verified with sun photometer both in high and low aerosol loading. Ångström exponent (α) and fine/coarse mode AOD (τf, τc) 1 is derived from spectral AOD. The column aerosol properties (τ, α, τf, τc) inferred from the lunar photometer is analyzed based on two month measurement in Beijing. Micro-pulse lidar has advantages in retrieval of aerosol vertical distribution, especially in night. However, the typical solution of lidar equation needs lidar ratio(ratio of aerosol backscatter and extinction coefficient) assumed in advance(Fernald method), or constrained by AOD2. Yet lidar ratio is varied with aerosol type and not easy to fixed, and AOD is used of daylight measurement, which is not authentic when aerosol loading is different from day and night. In this paper, the nocturnal AOD measurement from lunar photometer combined with mie scattering lidar observations to inverse aerosol extinction coefficient(σ) profile in Beijing is discussed.

Paper Details

Date Published: 16 October 2015
PDF: 6 pages
Proc. SPIE 9640, Remote Sensing of Clouds and the Atmosphere XX, 96400W (16 October 2015); doi: 10.1117/12.2194918
Show Author Affiliations
Donghui Li, Institute of Remote Sensing and Digital Earth (China)
Zhengqiang Li, Institute of Remote Sensing and Digital Earth (China)
Yang Lv, Institute of Remote Sensing and Digital Earth (China)
Ying Zhang, Institute of Remote Sensing and Digital Earth (China)
Kaitao Li, Institute of Remote Sensing and Digital Earth (China)
Hua Xu, Institute of Remote Sensing and Digital Earth (China)


Published in SPIE Proceedings Vol. 9640:
Remote Sensing of Clouds and the Atmosphere XX
Adolfo Comerón; Evgueni I. Kassianov; Klaus Schäfer, Editor(s)

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