石家庄地区大气气溶胶粒子谱拟合及分析

Fitting and Analysis of Aerosol Particles Spectrum Over Shijiazhuang Region

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。

In order to facilitate comparison of data and theoretical work needs, the negative index formula N（D）=Noexp（-λD） second order fimction N（D）=Noexp（-λD）, multi-order F function N（D）=NoD^nexp（-λD） and negative power function N（D）=AD^-b were used. The atmospheric aerosol particle spectrum of different levels and scale of 0.1-3μm 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 F function fited the aerosol particle spectrum best.