摘要
本文提出了从全波段太阳直射辐射信息确定０．７μｍ波长大气柱气溶胶光学厚度的一种新方法。数值试验表明，对各类气溶胶谱分布，在水汽含量±０．２ｃｍ的误差、臭氧总量±０．１ｃｍ的误差、太阳直射辐射的±１％的观测误差以及太阳常数的±２％误差范围内，对小于０．１的０．７μｍ波长气溶胶光学厚度，它的解误差一般小于０．０１７，对大于０．１并小于０．６的光学厚度，它的解误差一般小１０％。
In this paper, a new method is proposed to determine the 0.7μ m optical depth of the atmospheric columnar aerosol from the whole-spectral direct solar radiation. As shown in numerical experiments with the different aerosol size distributions, if errors in total H2O amount, total ozone amount, sun constant and measured direct solar radiation are confined within ± 0.2cm. ± 0.1cm. ± 2% and ± 1 %,respectively, the error in the 0.7 μm aerosol optical depth solution by the present method is usually less than 0.017 when the optical depth is less than < 0. 1 and 10% when the optical depth is in the range from 0.1 to 0.6.
出处
《大气科学》
CSCD
北大核心
1995年第4期385-394,共10页
Chinese Journal of Atmospheric Sciences
基金
国家自然科学基金
关键词
太阳直接辐射
气溶胶
光学厚度
参数化
direct solar radiation
aerosol optical depth, parameterization.
