气候变化领域集成服务门户(CCPortal): Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau

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DOI	10.1002/2017JD027965
	Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau
	Zou, Mijun; Zhong, Lei; Ma, Yaoming; Hu, Yuanyuan; Huang, Ziyu; Xu, Kepiao; Feng, Lu
通讯作者	Zhong, L (通讯作者)
发表日期	2018
ISSN	2169-897X
EISSN	2169-8996
起始页码	3961
结束页码	3975
卷号	123 期号:8
英文摘要	Evapotranspiration (ET) is one of the major uncertain components of the energy and water cycle and was derived for the Nagqu River Basin based on remote sensing data and atmospheric surface layer observations under cloudless conditions. Two process-based models were used to determine the ET: a Priestley-Taylor (PT)-based model and a topographical enhanced surface energy balance system (TESEBS) model. Improved broadband albedo, downward shortwave radiation flux, and reconstructed normalized difference vegetation index (NDVI) were coupled into the TESEBS model and PT-based model to estimate the actual ET. The atmospheric surface layer meteorological data, SPOT Vegetation (VGT) data, and Moderate Resolution Imaging Spectroradiometer data were used as inputs for 10-day ET calculations. The model-estimated results were compared with ground truths calculated via the combinatory method. The results indicated that the ET determined by both models well fit the actual ET, with correlation coefficients (R) of 0.88 and 0.82, respectively. However, the TESEBS model showed a better performance than the PT model, with a lower mean bias error (-0.02mm/hr) and lower root-mean-square error (0.08mm/hr). Although the PT model is computationally simple and requires few parameters, the strong weighting of the NDVI may lead to some overestimations, especially during the growing season.
关键词	SURFACE HEAT FLUXES LAND-SURFACE PRIESTLEY-TAYLOR ENERGY-BALANCE PENMAN-MONTEITH SENSIBLE HEAT EVAPORATION MODIS VEGETATION RADIATION
英文关键词	evapotranspiration; TESEBS; Priestley-Taylor; Nagqu River Basin
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000433071200008
来源期刊	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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/259269
推荐引用方式 GB/T 7714	Zou, Mijun,Zhong, Lei,Ma, Yaoming,et al. Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2018,123(8).
APA	Zou, Mijun.,Zhong, Lei.,Ma, Yaoming.,Hu, Yuanyuan.,Huang, Ziyu.,...&Feng, Lu.(2018).Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(8).
MLA	Zou, Mijun,et al."Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.8(2018).