Analysis of light scattering properties of non-spherical aerosol particles
The effects of complex refractive index,particle shape and size parameter on the light scattering properties of non-spherical aerosols are studied based by the discrete dipole approximation method.The simulation results show that when the size parameter increases,the extinction efficiency factor and the scattering efficiency factor oscillate with the amplitude decreasing.The oscillation period of extinction efficiency factor and the scattering efficiency factor of the ellipsoidal aerosol particles decreases with the real part of complex refractive index increasing,with the absorption efficiency factor slightly increasing.The oscillation amplitude and the central position of the scattering efficiency factor decrease with the imaginary part of complex refractive index increasing,with the absorption efficiency factor increasing significantly.When the imaginary part of complex refractive index increases,the lidar ratio of ellipsoidal aerosol particles increases and the depolarization ratio decreases.When close to Rayleigh domain,the shape has little influence on the light scattering properties of particles.In the Mie domain,the light scattering properties are closely related to the particle shape.To some extent,the oscillation amplitude,oscillation period and the central position of the extinction efficiency factor and scattering efficiency factor reflect the non-spherical feature of the ellipsoidal aerosol particles.
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NSTL
万方数据
维普
