基于航空偏振相机的海上气溶胶光学特性反演与验证
Validation of Retrieving Aerosol Optical Parameters over the Sea Using Airborne Directional Polarized Camera

黄红莲易维宁乔延利

文摘	采用基于逐次散射法的矢量辐射传输模型，通过求解矢量辐射传输方程，分析了影响海面上空气溶胶光学参数反演的主要因素。根据海洋大气气溶胶模型，通过构建多参数的反射率和偏振反射率查找表，给出了用于海上气溶胶光学参数反演的查找表迭代查找法。利用自主研制的多角度航空偏振相机在渤海湾上空航拍的偏振辐射数据，反演获得了该海域550 nm波段的气溶胶光学厚度和Angstrom波长指数，其均值分别为0. 441和1. 15。通过与布置在京津塘周边的多个地基CE318太阳辐射计同步观测数据进行的对比校验发现，两者间具有很好的一致性，说明反演方法针对海天背景的实际问题的考虑和处理过程切实可行。
其他语种文摘	The main factors which affect the retrieving of aerosol parameters over the sea surface are analyzed by solving the vector radiative transfer equation according to the models based on the method of successive orders of scattering. An algorithm for the estimating of aerosol optical properties over the sea surface is provided and realized according to the look-up table of reflectance and polarized reflectance estimated from the sea surface aerosol model. By using the data of polarized radiance from the self-developed airborn multi-angle directional polarized camera (DPC) flying over the Bohai Bay, the aerosol optical thickness and Angstrom exponent are retrieved, and the results show that the average values of optical thickness and Angstrom exponent over the area are respectively 0. 441 and 1.15. For the validation of the algorithm as well as the processing of data,the values are compared with those retrieved simultaneously from ground based sun-photometer (CE318) mounted at several different places. Results show that they are in agreement, which demonstrates the feasibility of the algorithm for the practical issue of the background of sea and sky.
来源	光学学报 ,2014,34(6):0601004-1-0601004-7 【核心库】
关键词	大气光学 ; 气溶胶光学厚度 ; 多角度偏振相机 ; 偏振反射率 ; Angstrom指数
地址	中国科学院安徽光学精密机械研究所, 安徽, 合肥, 230031
语种	中文
文献类型	研究性论文
ISSN	0253-2239
学科	大气科学(气象学)
基金	国家973计划
文献收藏号	CSCD:5169433