连续光谱大气气溶胶光学厚度的实验测量

Experimental Measurement in Atmospheric Aerosol Optical Depth Continuous Spectrum

利用连续光谱太阳分光光度计获得了连续光谱条件下太阳辐照度、大气透过率、大气总光学厚度以及气溶胶光学厚度随波长的变化特征.实现了对2048个波长的同时标定.给出了2005年3月5日、6日、8日、11日、20日和24日沿海实验当地计算结果,它们很好地反映了当地的天气状况.通过分析,表明应用连续波段的太阳分光光度计反演气溶胶光学厚度是可靠的,同时获得了350～1050nm光谱范围内的大气气溶胶光学厚度变化特征,对于研究不同波长范围的气溶胶光学厚度具有重要的参考价值.

Using the continuous spectrum sun spectrophotometer solar irradiation,atmospheric transmittance,atmospheric total optical thickness and aerosol optical thickness were analysed.The calibration of 2048 wavelengths at the same time was realized,leading to the results of experiments on March 5,6,8,11,20 and 24,in 2005.They all reflected the local weather conditions.Through the analysis it is shown that the results are reliable,and at the same time,the characteristics of atmospheric aerosol thickness from 350 to 1050 nm are obtained,which is important for studying different wavelength segments.