Ground-based Polarization Remote Sensing of Atmospheric Aerosols and the Correlation between Polarization Degree and PM2.5

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Cheng, Chen^1,2 ; Zhengqiang, Li^1 ; Donghui, Li^1,2 ; Kaitao, Li^1,2 ; Ying, Zhang^1,2 ; Weizhen, Hou^1 ; Yisong, Xie^1,2

State Environmental Protection Key Laboratory of Satellite Remote Sensing, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, 100101, China^1

University of Chinese Academy of Sciences, Beijing, 100049, China^2

关键词: Correlative analysis;    Degree of linear polarization;    Ground-based remote sensing;    Intensity detection;    Multi-wavelength sun-photometer;    Polarization degree;    Polarization measurements;    Vector radiative transfer models;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012039/pdf
DOI  :  10.1088/1755-1315/17/1/012039

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The ground-based polarization remote sensing adds the polarization dimension information to traditional intensity detection, which provides a new method to detect atmospheric aerosols properties. In this paper, the polarization measurements achieved by a new multi-wavelength sun photometer, CE318-DP, are used for the ground-based remote sensing of atmospheric aerosols. In addition, a polarized vector radiative transfer model is introduced to simulate the DOLP (Degree Of Linear Polarization) under different sky conditions. At last, the correlative analysis between mass density of PM2.5and multi-wavelength and multi-angular DOLP is carried out. The result shows that DOLP has a high correlation with mass density of PM2.5, R2>0.85. As a consequence, this work provides a new method to estimate the mass density of PM2.5by using the comprehensive network of ground-based sun photometer.