Assessment of aerosol models to AOD retrieval from HJ1 Satellites

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Yuhuan, Zhang^1,2 ; Zhengqiang, Li^1 ; Weizhen, Hou^1 ; Donghui, Li^1 ; Ying, Zhang^1 ; Yan, Ma^1,3

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

School of Earth Sciences and Engineering, Hohai University, Nanjing, 210098, China^3

关键词: Aerosol modeling;    Aerosol optical depths;    AOD retrieval;    Assessment;    Complex refractive index;    Environmental satellites;    Radiative transfer model;    Spatial and temporal resolutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012006/pdf
DOI  :  10.1088/1755-1315/17/1/012006

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The Chinese environmental satellites HJ1 A and B can play a significant role in the aerosol retrieval due to their high spatial and temporal resolution. The current Aerosol Optical Depth (AOD) retrieval methods from HJ1-CCD are almost based on the LUT (Look-Up Table), by selecting the best fitting result to determine the AOD. However, aerosol model selection has an important impact on the retrieval results when creating the lookup table; inappropriate choice of aerosol model will significantly affect the accuracy and applicability of the method. This paper determined the local aerosol physical properties (such as complex refractive index, and size distribution) based on the observational data, thus we defined the aerosol type and retrieved the AOD of the local aerosol. Furthermore we compared the results retrieved from the measurement aerosol model with those retrieved from the inherent aerosol model in the radiative transfer model and then evaluate its effect on the aerosol type.