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	The gap probability model for canopy thermal infrared emission with non-scattering approximation
	Niu Z. ; Liu Q. H. ; Gao Y. C. ; Zhang Q. Y. ; Wang C. Y.
	2000
英文摘要	To describe canopy emitting thermal radiance precisely and physically is one of the key researches in retrieving land surface temperature (LST) over vegetation-covered regions by remote sensing technology. This work is aimed at establishing gap probability models to describe the thermal emission characteristics in continuous plant, including the basic model and the sunlit model. They are suitable respectively in the nighttime and in the daytime. The sunlit model is the basic model plus a sunlit correcting item which takes the hot spot effect into account. The researches on the directional distribution of radiance and its relationship to canopy structural parameters, such as the leaf area index (LAI) and leaf angle distribution (LAD), were focused. The characteristics of directional radiance caused by temperature differences among components in canopy, such as those between leaf and soil, and between sunlit leaf or soil and shadowed leaf or soil, were analyzed. A well fitting between experimental data and the theoretical calculations shows that the models are able to illustrate the canopy thermal emission generally.
出处	Science in China Series E-Technological Sciences
卷	43
页	83-94
收录类别	SCI
语种	英语
ISSN号	1006-9321
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/23250]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Niu Z.,Liu Q. H.,Gao Y. C.,et al. The gap probability model for canopy thermal infrared emission with non-scattering approximation. 2000.

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