利用太阳光度计CE318反演气溶胶光学厚度改进算法的研究

针对影响太阳分光光度计精度的各种因素误差分析,分别在太阳天顶角,大气光学质量,Rayleigh光学厚度,臭氧总量等方面做了方法上的改进,以提高气溶胶光学厚度的反演精度。利用一般的文献上的处理方法做为比较,先考虑各种影响因素单独影响,再综合考虑各因素的影响结果,提出了太阳分光光度计处理的高精度算法,并应用于太湖等实际测量的反演中。实验处理表明本文改进算法对提高气溶胶光学厚度反演的精度有着良好的效果。将为仪器的使用,数据的处理提供有益的参考。

Improved algorithm for the retrieval of aerosol optical depth using the sunpohometer CE 318

Different effects on the accuracy of sunphotometer are analyzed and improved algorithm has been used to get high inversion precision of aerosol optical depth, respectively in the sun zenith angle,air mass,Rayleigh optical depth,and total ozone concentration.As a comparison of the retrieval method used in those references,many factors are considered one by one,and then integrated analysis of various ones,and an algorithm of high accuracy for the sunphotometer data processing is suggested,which has been used in the observation over Taihu Lake in China.The results show that there is a good effect on the precision of retrieved aerosol optical depth by the use of this improved algorithm,which will be helpful for the sunphotometer and its data processing.