globalchange  > 气候减缓与适应
DOI: 10.1002/2013GL058324
论文题名:
Local and global factors controlling water-energy balances within the Budyko framework
作者: Xu X.; Liu W.; Scanlon B.R.; Zhang L.; Pan M.
刊名: Geophysical Research Letters
ISSN: 0094-8303
EISSN: 1944-8034
出版年: 2013
卷: 40, 期:23
起始页码: 6123
结束页码: 6129
语种: 英语
英文关键词: Budyko ; hydrology ; water-energy partition
Scopus关键词: Budyko ; Land surface models ; Large scale basins ; Neural network model ; Normalized difference vegetation index ; Water and energies ; Water availability ; Water-energy balances ; Geophysics ; Hydrology ; Earth sciences ; atmospheric modeling ; energy balance ; energy efficiency ; environmental factor ; evapotranspiration ; hydrology ; NDVI ; numerical model ; precipitation (climatology) ; water availability ; United States
英文摘要: Quantifying partitioning of precipitation into evapotranspiration (ET) and runoff is the key to assessing water availability globally. Here we develop a universal model to predict water-energy partitioning (Ï- parameter for the Fu's equation, one form of the Budyko framework) which spans small to large scale basins globally. A neural network (NN) model was developed using a data set of 224 small U.S. basins (100-10,000 km2) and 32 large, global basins (~230,000-600,000 km2) independently and combined based on both local (slope, normalized difference vegetation index) and global (geolocation) factors. The Budyko framework with NN estimated Ï- reproduced observed mean annual ET well for the combined 256 basins. The predicted mean annual ET for ~36,600 global basins is in good agreement (R2 = 0.72) with an independent global satellite-based ET product, inversely validating the NN model. The NN model enhances the capability of the Budyko framework for assessing water availability at global scales using readily available data. Key Points A universal model to predict water-energy partitioning was developed Enable Budyko framework to assessing water availability globally Constraints for land surface models in terms of water and energy limitations ©2013 The Authors. Geophysical Research Letters published by Wiley on behalf of the American Geophysical Union.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84889986315&doi=10.1002%2f2013GL058324&partnerID=40&md5=e109853da2e3a0e198b86f6270181efc
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被引频次[WOS]:196   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5567
Appears in Collections:气候减缓与适应

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作者单位: Key Laboratory for Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China

Recommended Citation:
Xu X.,Liu W.,Scanlon B.R.,et al. Local and global factors controlling water-energy balances within the Budyko framework[J]. Geophysical Research Letters,2013-01-01,40(23).
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