The Ground-based Lidar Combined with Sun photometer for Aerosol Vertical Profiles and Optical Properties over Beijing

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Zhang, Zhaoyang^1,2 ; Su, Lin^2 ; Chen, Liangfu^2

University of Chinese Academy of Sciences, Beijing, China^1

Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing, China^2

关键词: Aerosol extinction;    Aerosol vertical profiles;    Angstrom exponent;    Backscatter coefficients;    Complicated functions;    Ground-based lidars;    Optical properties of aerosols;    Vertical profile;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012033/pdf
DOI  :  10.1088/1755-1315/17/1/012033

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The aerosol extinction-to-backscatter ratio (so called lidar ratio) is an important parameter for inverting LIDAR signals in the lidar equation. It is a complicated function of the aerosol microphysical characteristics. In this paper, we estimate lidar ratio, which ranged from 20 to 80sr, by sun photometer. The correlation between angstrom exponents derived from sun photometer and lidar ratio for columnar mean aerosols were discussed. In this paper, we also present other columnar optical properties of aerosols such as optical depth and Angstrom exponents. The backscattering lidar and sun photometer system has been set up in the city of Beijing to provide the vertical profile of the aerosol backscatter coefficient at 532nm. The measurement has been carried out in 2011.