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大气科学  2010 

中国地区卷云消光后向散射比的星载激光雷达遥感

DOI: 10.3878/j.issn.1006-9895.2010.03.04

Keywords: 卷云,消光后向散射比,星载激光雷达

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Abstract:

利用两年的星载激光雷达数据对中国地区卷云的消光后向散射比[又称激光雷达比(简称LR)]进行了研究分析。其中结合多次散射对光学厚度的依赖关系式和LR与透过率之间的关系式来求取LR,并提出五条质量控制标准来保证数据质量的可靠性。统计结果指出LR的月季变化并不是很明显,均值在24左右。中国地区的LR在热带辐合带相对较高,并随纬度的降低而增加(大约从22到27)。同时,从这个结论得出,为了更好地求取卷云的光学厚度,在中国地区为星载激光雷达选取的LR常数应该随纬度变化而改变。

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