利用M-120型太阳光度表的观测资料并结合有关资料,分析了贺兰山地区大气气溶胶的光学特征,并对在各类天气条件下,大气气溶胶光学厚度以及Angstrom浑浊度系数和波长指数的变化规律进行了讨论。利用实测地面大气气溶胶粒子谱资料,探讨了大气气溶胶粒子数浓度与Angstrom浑浊度系数β之间的关系以及大气气溶胶粒子几何平均尺度与波长指数α之间的相关关系。

According to the observation data of spectrosolar radiation by means of M-120 sunphotometer, optical properties of atmospheric aerosol in Helan mountain area have been analysed, and also the variation rule of aerosol optical depth and Angstrom turbidity parameter β, even wave exponent α under different weather conditions have been discussed. In addition, the relationships between the number concentration of ground aerosol and Angstrom turbidity parameter β, partical diameter of aerosol and wave exponent α have also been discussed.