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冰川冻土  2013 

昆仑山木孜塔格冰川反照率变化特征及其与粉尘的关系

DOI: 10.7522/j.issn.1000-0240.2013.0128, PP. 1133-1142

Keywords: 反照率,昆仑山木孜塔格冰川,遥感反演,时空变化,粉尘

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Abstract:

以LandsatTM影像反照率反演结果和MOD10A1逐日反照率产品为主要数据源,对其反照率遥感资料进行精度验证,然后根据这两种遥感数据资料对木孜塔格冰川表面反照率的时空变化特征进行分析,并探讨了反照率与粉尘的关系.结果表明从空间上看,冰川表面反照率具有明显的空间变化特征,其数值介于0.508~0.637;总体上反照率随着海拔升高而增大,在海拔5950m以上,由于有裸岩的存在,反照率开始下降.从年际变化上看,在2000-2009年间木孜塔格冰川反照率年际变化波动较大,并呈微弱的上升趋势,速率约为0.0025a-1.反照率与微粒个数呈现负相关关系.

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