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中文摘要：
在IDL程序语言中实现Mie理论的数值算法，利用HITRAN资料提供的气溶胶粒子复折射指数，计算分析了沙尘、黑炭2种气溶胶粒子在不同半径（1μm，2．5μm和10μm）时，对波长为400nm和860nm光的散射效率以及散射相函数矩阵元素。结果表明：黑炭与沙尘有明显的光学性质差别，沙尘粒子不仅散射效率大于黑碳，而且后向散射比黑碳粒子强。2种粒子对400nm和860nm太阳光的偏振也不同，可以利用此特性鉴别这2种气溶胶。
英文摘要：
The numerical algorithm of Mie theory was realized in IDL. The scattering etttctency and phase matrix elements of black carbon and dust aerosols at 400 nm and 860 nm wavelength were calculated when their radius were 1 μm, 2.5μm and 10μm. The results show that the optical characteristics of the black carbon and dust are significantly different, and both the scattering efficiency and backward scattering of the dust are greater than those of the black carbon. Since the lighting polarizations of the two aerosols are different at the sun light of 400 nm and 860 nm, both the aerosols can be distinguished with the characteristics.
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