【摘要】 2005年11月至2006年1月,选择晴朗无云的天气,利用地物光谱仪和自行设计的基于积分球的光学接收装置,测量了合肥地区的太阳直射光谱。利用Langley方法对测量的数据进行处理,反演了从350 nm到2500 nm的大气气溶胶光学厚度, 550 nm处的光学厚度平均值是0．391 56,光学厚度随波长增加而减小;对计算得出的光学厚度值作了Junge分布拟合,得到浑浊度系数k的平均值是0．188 95,波长指数v的平均值是3．265 04,结果表明合肥地区气溶胶中小粒子占主导地位。更多还原

【Abstract】 From November 2005 to January 2006 when air is clear, a FieldSpec(r) Pro spectroradiometer is used in conjunction with a custom-designed telescope based on integrating sphere to make spectrally continuous measurements of directly transmitted solar spectral irradiance in Hefei. With Langley method, the data is anlyzed to get aerosol optical depth from 350 nm to 2500 nm. The average optical depth is 0.39156 at 550 nm, aerosol optical depth decreases with wavelength increasing. The average Angstrom exponent k(= 0.18895) and v(=3.26504) are obtained by fitting the optical depth on Junge distribute. The result shows that the small particles are primary in Hefei.更多还原