Atmospheric temperature dependence of the aerosol backscattering coefficient--颗粒学报PARTICUOLOGY

Chen, B., Chen, S., Zhang, Y., Chen, H., Guo, P., & Chen, H. (2016). Atmospheric temperature dependence of the aerosol backscattering coefficient. Particuology, 28, 72-76. https://doi.org/10.1016/j.partic.2015.12.004

Atmospheric temperature dependence of the aerosol backscattering coefficient

Binglong Chen, Siying Chen ^*, Yinchao Zhang, He Chen, Pan Guo, Hao Chen

Key Laboratory of Photoelectronic Imaging Technology, Beijing Institute of Technology, Beijing 100081, China

10.1016/j.partic.2015.12.004

Volume 28, October 2016, Pages 72-76

Received 29 July 2015, Revised 15 December 2015, Accepted 17 December 2015, Available online 24 February 2016, Version of Record 4 August 2016.

E-mail: csy@bit.edu.cn

Highlights

• Atmospheric temperature profile was extracted from rotational Raman lidar data.

• Aerosol backscattering coefficient was corrected using the atmospheric temperature profile.

• Effects of cloud and seasonal temperature change on backscattering coefficient were discussed.

Abstract

In extracting vertical profiles of aerosol backscattering coefficient from lidar signals, the effects of atmospheric temperature are usually ignored. In this study, these effects are analyzed using a rotational Raman–Mie lidar system, which is capable of simultaneously measuring atmospheric temperature and vertical profiles of aerosols. A method is presented to correct the aerosol backscattering coefficient using atmospheric temperature profiles, obtained from Raman scattering signals. The differences in the extracted aerosol backscattering coefficient with and without considering temperature effects are further discussed. The backscattering coefficients for scattering off clouds are shown to be more sensitive to temperature than that of aerosols and atmosphere molecules; the aerosol backscattering coefficient is more sensitive to temperature in summer due to higher atmospheric temperatures.

Graphical abstract

Keywords

Lidar; Atmospheric temperature; Aerosol; Raman scattering; Backscattering coefficient

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