雪粒径对积雪双向反射率的影响

被引:4
作者
王剑庚 [1 ,2 ,3 ]
冯学智 [1 ,2 ]
肖鹏峰 [1 ,2 ]
梁继 [4 ]
李云 [1 ,2 ]
林金堂 [1 ,2 ]
李晖 [1 ,2 ]
机构
[1] 南京大学地理信息科学系
[2] 南京大学江苏省地理信息技术重点实验室
[3] 南京信息工程大学大气物理学院
[4] 中国科学院寒区旱区环境与工程研究所
关键词
积雪; 粒径; 辐射传输; 微物理特征; 光学特性; 双向反射率;
D O I
暂无
中图分类号
P426.635 [];
学科分类号
0706 ; 070601 ;
摘要
雪粒径大小影响着积雪反照率的高低,从而影响着局地或全球能量收支平衡和气候变化,其影响程度取决于积雪本身的微物理特征和光学特性.在研究550~1030和1 640nm波长处积雪光学特性的基础上,采用辐射传输方程模拟并分析了雪粒径对积雪双向反射率的影响.模拟结果表明近红外通道1 030 nm是反演雪粒径的敏感波长,积雪双向反射率在该波段随粒径和观测角度变化明显,多角度遥感信息可以更有效地体现积雪的微物理特征和光学特性,为利用多角度遥感数据反演雪粒径提供理论基础.
引用
收藏
页码:283 / 288
页数:6
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