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Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/acp-2017-1000
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2017-1000
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

  14 Dec 2017

14 Dec 2017

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This preprint was under review for the journal ACP but the revision was not accepted.

Comparison of the optical properties of pure and transported anthropogenic dusts measured by ground-based Lidar

Zhijuan Zhang1, Bin Chen1, Jianping Huang1, Jingjing Liu2, Jianrong Bi1, Tian Zhou1, and Zhongwei Huang1 Zhijuan Zhang et al.
  • 1Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China
  • 2School of Mechanical and Instrument Engineering, Xi’an University of Technology, Xi’an 710048, China

Abstract. In this study, the optical properties of pure dust (PDU) and transported anthropogenic dust (TDU) (also defined as polluted dust) are compared by using ground-based Lidar data for the period from October 2009 to June 2013. The total attenuated backscattering coefficient at 532 nm, the linear volume depolarization ratio and the color ratio are derived from the L2S-SM-II dual-band polarization Lidar. We found that the TDU has a spherical shape, a small linear volume depolarization ratio and a large color ratio which representing its large particle sizes. The threshold value delineating PDU and TDU was approximately 0.2, which is the same as the threshold value used in the CALIPSO CAD algorithm. The histogram of the attenuated backscattering coefficients and the color ratios of pure dust shows two peaks, but that for the transported anthropogenic dust shows no significant peak and a nearly uniform distribution. The ground-based Lidar results confirm that both the transported anthropogenic dust and pure dust can be detected by air-borne or ground-based Lidar measurements.

Zhijuan Zhang et al.

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Zhijuan Zhang et al.

Zhijuan Zhang et al.

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Short summary
Environmental problems caused by aerosols such as dust aerosols are influencing people's lives and work. Due to different radiative effects of different types of aerosols, detection of the aerosol type is vital for improving our air quality. In this study, the optical properties of pure dust and transported anthropogenic dust are compared by using ground-based Lidar data. Based on our conclusion, detection of different dust aerosols will be more accurate using satellite-based Lidar.
Environmental problems caused by aerosols such as dust aerosols are influencing people's lives...
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