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Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau
Zou, MJ (Zou, Mijun)1; Zhong, L (Zhong, Lei)1; Ma, YM (Ma, Yaoming)2,3,4; Hu, YY (Hu, Yuanyuan)1; Huang, ZY (Huang, Ziyu)1; Xu, KP (Xu, Kepiao)1; Feng, L (Feng, Lu)5
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
2018-04-27
Volume123Issue:8Pages:3961-3975
DOI10.1002/2017JD027965
AbstractEvapotranspiration (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.
WOS IDWOS:000433071200008
Language英语
Indexed BySCIE
KeywordSURFACE HEAT FLUXES REMOTE-SENSING DATA LAND-SURFACE PRIESTLEY-TAYLOR ENERGY-BALANCE LONGWAVE RADIATION NORTHWEST CHINA PENMAN-MONTEITH CLEAR SKIES MODIS DATA
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
Cooperation Status国内
ISSN2169-897X
Department环境变化与地表过程重点实验室
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8674
Collection图书馆
Affiliation1.Univ Sci & Technol China, Sch Earth & Space Sci, Lab Atmospher Observat & Climate Environm Res, Hefei, Anhui, Peoples R China;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing, Peoples R China;
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
4.Univ Chinese Acad Sci, Beijing, Peoples R China;
5.China Meteorol Adm, Inst Trop & Marine Meteorol, Guangzhou, Guangdong, Peoples R China.
Recommended Citation
GB/T 7714
Zou, MJ ,Zhong, L ,Ma, YM ,et al. Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(8):3961-3975.
APA Zou, MJ .,Zhong, L .,Ma, YM .,Hu, YY .,Huang, ZY .,...&Feng, L .(2018).Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(8),3961-3975.
MLA Zou, MJ ,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):3961-3975.
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