大气与环境光学学报 ›› 2011, Vol. 6 ›› Issue (3): 179-184.

• 大气光学 • 上一篇    下一篇

气溶胶垂直分布对大气层顶反射函数的影响

周凯兵1,2,余东升1,2,徐青山1   

  1. (1 中国科学院安徽光学精密机械研究所大气光学研究中心中国科学院大气成分与光学重点实验室,安徽 合肥,230031; 
    2 中国科学院研究生院,北京,100039)
  • 收稿日期:2010-07-30 修回日期:2010-08-31 出版日期:2011-05-28 发布日期:2011-05-23
  • 通讯作者: 周凯兵(1987-),男,安徽宿松人,硕士研究生,主要研究方向为大气探测与遥感。 E-mail:xunxue87@163.com
  • 作者简介:周凯兵(1987-),男,安徽宿松人,硕士研究生,主要研究方向为大气探测与遥感。
  • 基金资助:

    国家自然科学基金(40775028)资助

Effect of Aerosol Vertical Distribution on Reflectance of Top of Atmosphere 

Zhou Kai-bing1,2,Yu Dong-sheng1,2,Xu Qing-shan1   

  1. (1 Key Laboratory of Atmospheric Composition and Optical Radiation, Center for Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; 
    2 Graduate University of Chinese Academy of Sciences, Beijing 100039, China)
  • Received:2010-07-30 Revised:2010-08-31 Published:2011-05-28 Online:2011-05-23

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:当不能正确的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(ΔR)也就越大;气溶胶吸收性越强,ΔR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。

关键词: 气溶胶, 垂直分布, 大气顶, 反射函数, 吸收

Abstract:

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 (ΔR) increases with increasing aerosol optical thickness and aerosol absorption. The effect of relative azimuth angle on ΔR increases with increasing aerosol absorption. For strongly absorbing aerosols, R increases with decreasing the height of distribution.

Key words: aerosol, vertical distribution, top of the atmosphere, reflectance, absorption

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