摘要：利用负指数式N(D)=N₀exp(-λD)、二阶Γ函数N(D)=N₀D²exp(-λD)、多阶Γ函数N(D)=N₀Dⁿexp(-λD)和负幂函数N(D)=AD^-b分别对石家庄地区2004年11月17日航测得到的不同高度、粒度为0.1～3μm的气溶胶粒子谱进行拟合分析,并进行F检验计算相关系数和标准误差。结果表明:用多阶Γ函数对气溶胶粒子谱进行拟合效果最好。

关键词： 气溶胶；粒子谱；拟合

Abstract：In order to facilitate comparison of data and theoretical work needs， the negative index formula N（D） = N₀ exp（-λD）、 second order function N（D）=N₀D²exp(-λD)、 multi-order Γ function N（D）=N₀Dⁿexp（-λD） and negative power function N（D）=AD^-b were used. The atmospheric aerosol particle spectrum of different levels and scale of 0.1~3 μm derived by the aircraft detection in November 17， 2004 over Shijiazhuang Region was fittingly analyzed and F test and accuracy test was conducted. The results showed that the multi-order Γ function fited the aerosol particle spectrum best. 

Keywords： aerosol； particle spectra； fitting