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地理学报  2003 

基于陆面模式和遥感技术的地表温度比较

DOI: 10.11821/xb200304002, PP. 494-502

Keywords: 地表温度,模式模拟,分裂窗反演,遥感

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Abstract:

基于我国中部的样带基础上,采用陆面模式(CommonLandSurfaceModelCLM)和遥感结合技术,对研究的样带区域的地表温度利用CLM模式进行模拟和利用遥感分裂窗技术进行反演;以观测地表温度为真值,分别比较模拟地表温度和反演地表温度空间分布特征和误差大小,分析模拟方法和反演方法对计算地表温度的可适性和应用范围,为进行大面的地表温度计算提供选择和参考依据。通过研究发现,模式模拟地表温度同实测地表温度分布的大的格局吻合非常的好,但是因地貌类型及地表覆盖的影响,模拟地表温度对水域的模拟温度误差较大,大于3%以上,对耕地模拟误差偏小,在(-3)%以内,对裸地、草地和林地模拟温度吻合非常的好。反演地表温度同观测地表温度相差较大,分裂窗反演方法适合地表覆盖为草地和林地状态的地表温度的计算,裸露和农耕区域反演的地表温度误差特别的大。

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