气候变化领域集成服务门户(CCPortal): Estimates of land surface heat fluxes of the Mt. Everest region over the Tibetan Plateau utilizing ASTER data

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DOI	10.1016/j.atmosres.2015.09.012
	Estimates of land surface heat fluxes of the Mt. Everest region over the Tibetan Plateau utilizing ASTER data
	Han, Cunbo; Ma, Yaoming; Chen, Xuelong; Su, Zhongbo
通讯作者	Han, CB (通讯作者)
发表日期	2016
ISSN	0169-8095
EISSN	1873-2895
起始页码	180
结束页码	190
卷号	168
英文摘要	Regional land surface albedo, land surface temperature, net radiation flux, ground heat flux, sensible heat flux, and latent heat flux were derived in the Mt. Everest area utilizing topographical enhanced surface energy balance system (TESEBS) model and nine scenes of ASTER (Advanced Spacebome Thermal Emission and Reflection Radiometer) data under clear-sky and in-situ measurements at the QOMS station (the Qomolangma Station for Atmospheric Environmental Observation and Research, Chinese Academy of Sciences). The parameterization schemes for diffused and reflected downward shortwave radiation flux of the TESEBS model were improved by introducing the parameters sky-view factor (SVF) and terrain configuration factor (C-t). Then, a so-called C-correction method for land surface albedo was coupled into the TESEBS model to reduce the influences of topography. After topographical correction, the albedo of the dark tilted surface faring away from the Sun was compensated and albedo of the brightness surface facing the Sun was restrained. The downward shortwave radiation flux was broken down into three components including solar direct radiation flux, solar diffused radiation flux, and reflected solar radiation flux by surrounding terrain. The solar diffused radiation flux ranges from about 30 to 60 W/m(2) at the satellite passing time on 6 January 2008. The reflected solar radiation flux changes from 0 to more than 100 W/m(2) in the area covered by glaciers and snows. Thus, it is important to take the topographical effects into account in estimation of surface radiation balance in the mountainous area, especially in the glacier area The retrieved land surface parameters, land surface radiation balance components, and the land surface energy balance components were evaluated by the field measurements in the QOMS station. The estimated results were very close to the in-situ observations with low mean bias errors, low root mean square errors and high correlation coefficients. Although the proposed schemes are rested on a number of hypotheses and the validation is on the relative flat surface, the topographical correction schemes are very effective and can be widely used in the rugged mountainous areas. (C) 2015 Elsevier B.V. All rights reserved.
关键词	BALANCE SYSTEM SEBS SPACEBORNE THERMAL EMISSION REFLECTION RADIOMETER ASTER ENERGY BALANCE SOLAR-RADIATION THEMATIC MAPPER COMPLEX TERRAIN HETEROGENEOUS LANDSCAPE ROUGHNESS HEIGHT PARAMETERIZATION
英文关键词	Land surface heat fluxes; TESEBS; ASTER; Topographical effect; Mt Everest; Tibetan Plateau
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000364892100017
来源期刊	ATMOSPHERIC RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258702
推荐引用方式 GB/T 7714	Han, Cunbo,Ma, Yaoming,Chen, Xuelong,et al. Estimates of land surface heat fluxes of the Mt. Everest region over the Tibetan Plateau utilizing ASTER data[J]. 中国科学院青藏高原研究所,2016,168.
APA	Han, Cunbo,Ma, Yaoming,Chen, Xuelong,&Su, Zhongbo.(2016).Estimates of land surface heat fluxes of the Mt. Everest region over the Tibetan Plateau utilizing ASTER data.ATMOSPHERIC RESEARCH,168.
MLA	Han, Cunbo,et al."Estimates of land surface heat fluxes of the Mt. Everest region over the Tibetan Plateau utilizing ASTER data".ATMOSPHERIC RESEARCH 168(2016).