地表非同温象元发射率的定义问题

  • 李 小
  • 王 锦
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Abstract

物体表面 (热 )发射率的经典定义要求该表面有均一的温度 ,以与同一表面温度黑体的热辐射相比较 .在热红外陆地表面温度遥感向 1K精度前进的时候 ,能否定义和如何定义地表非同温象元的发射率是研究分离其真实温度与发射率反演方法的前提 .这一定义应同时考虑混合象元不同组分材料发射率、多次散射、以及组分之间的温差 .前者可以表达为不同材料发射率的面积加权平均 ,而后两者则可分别表达为由多次散射或温差引起的两项“视在发射率增量” .

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APA

李小文, & 王锦地. (1999). 地表非同温象元发射率的定义问题. Chinese Science Bulletin, 44(15), 1612–1617. https://doi.org/10.1360/csb1999-44-15-1612

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