基于DPC 的中国部分区域陆地气溶胶光学厚度反演

大气与环境光学学报 ›› 2021, Vol. 16 ›› Issue (3): 239-246.

• “高分五号卫星大气数据反演”专辑 • 上一篇下一篇

基于DPC 的中国部分区域陆地气溶胶光学厚度反演

提汝芳1∗, 黄红莲1, 刘晓1, 樊依哲1,2, 王佳佳1,2, 孙晓兵1, 洪津1,2

1 中国科学院合肥物质科学研究院安徽光学精密机械研究所, 中国科学院通用光学定标与表征技术重点实验室, 安徽合肥 230031; 2 中国科学技术大学, 安徽合肥, 230026

收稿日期:2020-10-30 修回日期:2021-01-22 出版日期:2021-05-28 发布日期:2021-05-28
通讯作者: E-mail: tirufang@aiofm.ac.cn E-mail:tirufang@163.com
作者简介:提汝芳 (1986 - ), 女, 山东菏泽人, 博士后, 主要从事偏振遥感方面的研究。 E-mail: tirufang@aiofm.ac.cn
基金资助:
Supported by High Resolution Major National Special Project of China (高分重大专项, 30-Y20A010-9007-17/18), National Key Research and Development Program of China (NKERDPC) (国家重点研发计划, 2016YFE0201400), High Resolution for Earth Observation (高分重大专项项目, GFZX04011805), Key Project of Hefei Institute of Physical Science Chinese Academy of Sciences (中国科学院合肥物质科学研究院重点项目, Y73H9P1801)

Retrieval of Aerosol Optical Depth Over Parts of China Land Based on Directional Polarimetric Camera

#br# TI Rufang1∗, HUANG Honglian1, LIU Xiao1, FAN Yizhe1,2, WANG Jiajia1,2, SUN Xiaobing1, HONG Jin1

1 Key Laboratory of Optical Calibration and Characterization, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 University of Science and Technology of China, Hefei 230026, China

Received:2020-10-30 Revised:2021-01-22 Published:2021-05-28 Online:2021-05-28

摘要/Abstract

摘要： 大气气溶胶是气候变化与遥感定量化等的重要影响因素, 研究气溶胶光学特性具有重要意义。基于高分五号卫星搭载的大气气溶胶多角度偏振探测仪 (Directional polarimetric camera, DPC) 过境中国区域的数据, 开展了气溶胶光学厚度的反演研究。基于矢量辐射传输模型 6SV 计算构建气溶胶光学特性查找表, 采用 Ross-Li 地表 BRDF 模型和半经验 NB 模型计算地表贡献, 利用标量与偏振的多角度信息和查找表方法, 反演气溶胶光学厚度。 DPC 气溶胶光学厚度反演结果与中国区域的 AERONET 地面站点测量结果吻合性较好, 线性拟合度较高, 相关性系数大于 0.8, 验证了算法的可靠性, 为 DPC 有效监测气溶胶的时空分布提供技术支持。

关键词: 多角度偏振探测仪, 反演, 气溶胶, 光学厚度

Abstract: Atmospheric aerosol is an important influence factor of climate change and remote sensing quantification, so it is of great significance to study aerosol optical properties. Based on the measurements of directional polarimetric camera (DPC) onboard GF-5 satellite over China, the retrieval of aerosol optical depth (AOD) is carried out. Based on the vector radiative transfer model 6sv, a look-up table of aerosol optical properties is constructed. Then the contribution of land surface is calculated by Ross Li surface BRDF model and semi empirical NB model. Finally, AOD is retrieved by using multi angle information of intensity and polarization and look-up table method. It is found that the retrieval results of DPC aerosol optical depth are in good agreement with the observation results of AERONET ground stations in China, the linear fitting degree is good and the correlation coefficient is greater than 0.8, which verifies the reliability of the algorithm. And it is believed that the development of the algorithm provides technical support for DPC to effectively monitor the spatial and temporal distribution of aerosols.

Key words: directional polarimetric camera, retrieval, aerosol, optical thickness

中图分类号:

TP79

提汝芳∗, 黄红莲, 刘晓, 樊依哲, 王佳佳, 孙晓兵, 洪津, . 基于DPC 的中国部分区域陆地气溶胶光学厚度反演[J]. 大气与环境光学学报, 2021, 16(3): 239-246.

TI Rufang∗, HUANG Honglian, LIU Xiao, FAN Yizhe, WANG Jiajia, SUN Xiaobing, HONG Jin. Retrieval of Aerosol Optical Depth Over Parts of China Land Based on Directional Polarimetric Camera[J]. Journal of Atmospheric and Environmental Optics, 2021, 16(3): 239-246.

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基于DPC 的中国部分区域陆地气溶胶光学厚度反演

Retrieval of Aerosol Optical Depth Over Parts of China Land Based on Directional Polarimetric Camera

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