摘要
本文应用Mie散射理论，采用简洁方案计算了IAMAP提出的大气气溶胶主要粒子的散射效率因子及散射相函数，结果表明，大颗粒的散射能力以75％硫酸液滴最强，其次是水滴，冰晶，沙尘性粒子；小粒子的散射能力仍以75％硫酸滴最强，其次是沙尘性粒子，小颗粒相函数的前向与后向基本对称；大颗粒相函数随X值增大而不对称加大；折射率实部不同，则相函数最小值出现在不同的散射角，折射率虚部较大的煤烟，相函数起伏较小，约在10°量级。
Based on the Mie scattering theory, scattering efficlency factor and scattering phase function of aerosol primary particle which IAMAP proposed are computed by using succinct scheme. Results show:among scattering ability big particles can be arranged in following order: 75% H2SO4 droplet,water droplet,ice crystal and sand-dust particle. Among small particles, 75% H2SO4 droplet' s is the strongest,sand -dust particle comes second.The forward phase function of small paticle is basically symmetric with respect to the backward phase function. But big particle' s phase function asymmetry tends to increase with increasing X. When refractive indexes are different in real part, the mininum values of the phase function appear on different scattering angles. If imaginary part is great, the phase function rises and falls smoothly.
出处
《气象科学》
CSCD
北大核心
1996年第3期233-239,共7页
Journal of the Meteorological Sciences
关键词
对流层
平流层
大气
气溶胶粒子
散射特征
Scattering efficiency factor
Phase function
Aerosol particle
Mie theory
