globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD027965
Scopus记录号: 2-s2.0-85047447812
论文题名:
Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau
作者: Zou M.; Zhong L.; Ma Y.; Hu Y.; Huang Z.; Xu K.; Feng L.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:8
起始页码: 3961
结束页码: 3975
语种: 英语
英文关键词: evapotranspiration ; Nagqu River Basin ; Priestley-Taylor ; TESEBS
Scopus关键词: atmospheric modeling ; boundary layer ; comparative study ; energy balance ; evaporation ; evapotranspiration ; MODIS ; NDVI ; numerical model ; parameter estimation ; remote sensing ; satellite altimetry ; satellite data ; shortwave radiation ; China ; Nagqu ; Qinghai-Xizang Plateau ; Xizang
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 (−0.02 mm/hr) and lower root–mean-square error (0.08 mm/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. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114077
Appears in Collections:气候减缓与适应

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作者单位: Laboratory for Atmospheric Observation and Climate Environment Research, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; Center for Excellence in Tibetan Plateau Earth Sciences, CAS, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou, China

Recommended Citation:
Zou M.,Zhong L.,Ma Y.,et al. Comparison of Two Satellite-Based Evapotranspiration Models of the Nagqu River Basin of the Tibetan Plateau[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(8)
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