摘要
搜集整理了气溶胶、雾和雨的观测资料,运用米氏理论计算并分析了大气体散射强度特性.结果表明:大气体散射能量主要集中在前向较窄的散射角区间内,体散射相函数随散射角的分布取决于粒子尺度谱、波长和复折射指数,不同类型粒子体散射相函数随散射角的分布特性有较大的差异;大气单散射反照率受波长和复折射指数虚部影响,其值范围变化较大,相同波长下城市气溶胶单散射反照率小于雾,城市气溶胶和雾的单散射反照率随波长增大而减小.
Different size distributions of aerosol,fog and rain collected.Atmospheric volume scattering intensity characteristics were calculated and analyzed according to Mie scattering theory.The results show that the energy of atmospheric volume scatter concentrated mainly in a narrow area of forward scatter angle.The distributions of volume scattering phase relied on particle size distributions,wavelength and complex refraction index,and was diverse for different type of particles.The atmospheric single scattering albedo was influenced by the wavelength and the imaginary of complex refractive index,and varied in a wide value range.The single scattering albedo of urban aerosols was less than that of fogs in the same wavelength.The single scattering albedo of urban aerosols and fogs were inversely proportional to the wavelength.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2011年第4期328-332,共5页
Journal of Infrared and Millimeter Waves
关键词
可见光
红外
大气
体散射相函数
单散射反照率
visible light
infrared
atmosphere
volume scattering phase function
single scattering albedo
