摘要
在大气-海洋系统中如果不考虑气溶胶垂直分布将给离水反射率的反演带来一定的误差,进而影响水色遥感的精度。利用辐射传输模型模拟了气溶胶垂直分布对大气层顶(TOA)反射函数的影响,结果表明:当不能正确考虑气溶胶垂直分布特性时,TOA反射函数R将会产生10%甚至30%的误差;气溶胶吸收性越强、光学厚度越大,所产生的R的相对误差(△R)也就越大;气溶胶吸收性越强,△R受相对方位角的影响也越大;当气溶胶具有强吸收性时,其分布高度越低,R越大。
In ocean-atmosphere system, errors may be resulted in retrieval of the water-leaving reflectance without regard to aerosol vertical distribution, so that it affects the precision of ocean-color remote sensing. The effect of aerosol vertical distribution on the top of the atmosphere （TOA） reflectance was simulated by radiative transfer model. The result indicates that the error of the TOA reflectance （R） achieves 10%, especially 30%, while aerosol Vertical distribution isn＇t appropriate. The relative error （△R） increases with increasing aerosol optical thickness and aerosol absorption. The effect of relative azimuth angle on △R increases with increasing aerosol absorption. For strongly absorbing aerosols, R increases with decreasing the height of distribution
出处
《大气与环境光学学报》
CAS
2011年第3期179-184,共6页
Journal of Atmospheric and Environmental Optics
基金
国家自然科学基金(40775028)资助
关键词
气溶胶
垂直分布
大气顶
反射函数
吸收
aerosol
vertical distribution
top of the atmosphere
reflectance
absorption
