Estimation of the Land Surface Emissivity in the Hinterland of Taklimakan Desert

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2014 > Vol11 No.6

	Estimation of the Land Surface Emissivity in the Hinterland of Taklimakan Desert
	LIU Yong-qiang ; Ali MAMTIMIN ; HUO Wen ; YANG Xing-hua ; LIU Xin-chun ; MENG Xian-yong ; HE Qing
刊名	Journal of Mountain Science
	2014-11
卷号	11 期号:6 页码:1543-1551
关键词	Taklimakan Desert Land surface emissivity Thermal infrared spectra Surface temperature Heat flux
通讯作者	HE Qing
英文摘要	An accurate accounting of land surface emissivity (ε) is important both for the retrieval of surface temperatures and the calculation of the longwave surface energy budgets. Since ε is one of the important parameterizations in land surface models (LSMs), accurate accounting also improves the accuracy of surface temperatures and sensible heat fluxes simulated by LSMs. In order to obtain an accurate emissivity, this paper focuses on estimating ε from data collected in the hinterland of Taklimakan Desert by two different methods. In the first method, ε was derived from the surface broadband emissivity in the 8–14 μm thermal infrared atmospheric window, which was determined from spectral radiances observed by field measurements using a portable Fourier transform infrared spectrometer, the mean ε being 0.9051. The second method compared the observed and calculated heat fluxes under near-neutral atmospheric stability and estimated ε indirectly by minimizing the root-mean-square difference between them. The result of the second method found a mean value of 0.9042, which is consistent with the result by the first method. Although the two methods recover ε from different field experiments and data, the difference of mean values is 0.0009. The first method is superior to the indirect method, and is also more convenient.
收录类别	SCI
公开日期	2014-11-18
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/7422]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2014_Vol11 No.6
推荐引用方式 GB/T 7714	LIU Yong-qiang,Ali MAMTIMIN,HUO Wen,et al. Estimation of the Land Surface Emissivity in the Hinterland of Taklimakan Desert[J]. Journal of Mountain Science,2014,11(6):1543-1551.
APA	LIU Yong-qiang.,Ali MAMTIMIN.,HUO Wen.,YANG Xing-hua.,LIU Xin-chun.,...&HE Qing.(2014).Estimation of the Land Surface Emissivity in the Hinterland of Taklimakan Desert.Journal of Mountain Science,11(6),1543-1551.
MLA	LIU Yong-qiang,et al."Estimation of the Land Surface Emissivity in the Hinterland of Taklimakan Desert".Journal of Mountain Science 11.6(2014):1543-1551.