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	On the applicability of Kirchoff's law and the principle of heat balance in thermal infrared remote sensing: A non-isothermal system
	Zhang R. H. ; Li Z. L. ; Sun X. M. ; Zhu Z. L. ; Wang W. M.
	2005
关键词	applicability of Kirchoff's law heat balance non-isothermal system surface-temperature kirchhoff law emissivities
英文摘要	This paper proposes a basic equation of thermal radiation interaction between surface objects on the basis of the principle of heat balance in the interface. The solution of this equation takes account of the contribution of sensible heat flux and latent heat flux more completely, compared with traditional solution for surface cooling and heating processes. By the aid of the experimental data conducted in the Xiaotangshan experimental site, Beijing, both the non-applicability of Kirchoff's law and the measurability of surface emissivity in a non-isothermal system have been highlighted. Two methods called ventilation and time-delay compensations have been proposed to reduce the error induced by change of surface temperatures of non-isothermal objects during the measurement of emissivity. Based on the solution of the basic equation, this paper has analyzed and pointed out the misunderstanding in comprehension and application of Kirchoff's law published in literature.
出处	Science in China Series D-Earth Sciences
卷	48
期	1
页	53-64
收录类别	SCI
语种	英语
ISSN号	1006-9313
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/22378]
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	Zhang R. H.,Li Z. L.,Sun X. M.,et al. On the applicability of Kirchoff's law and the principle of heat balance in thermal infrared remote sensing: A non-isothermal system. 2005.

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