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来源类型Article
规范类型其他
DOI10.1002/2017WR021215
Large-Scale Controls of the Surface Water Balance Over Land-Insights From a Systematic Review and Meta-Analysis.
Padrón RS; Gudmundsson L; Greve P; Seneviratne SI
发表日期2017
出处Water Resources Research 53 (11): 9659-9678
出版年2017
语种英语
摘要The long-term surface water balance over land is described by the partitioning of precipitation (P) into runoff and evapotranspiration (ET), and is commonly characterized by the ratio ET/P. The ratio between potential evapotranspiration (PET) and P is explicitly considered to be the primary control of ET/P within the Budyko framework, whereas all other controls are often integrated into a single parameter, ω. Although the joint effect of these additional controlling factors of ET/P can be significant, a detailed understanding of them is yet to be achieved. This study therefore introduces a new global dataset for the long-term mean partitioning of P into ET and runoff in 2733 catchments, which is based on in-situ observations and assembled from a systematic examination of peer-reviewed studies. A total of 26 controls of ET/P that are proposed in the literature are assessed using the new dataset. Results reveal that: (i) factors controlling ET/P vary between regions with different climate types; (ii) controls other than PET/P explain at least 35% of the ET/P variance in all regions, and up to ∼90% in arid climates; (iii) among these, climate factors and catchment slope dominate over other landscape characteristics; and (iv) despite the high attention that vegetation-related indices receive as controls of ET/P, they are found to play a minor and often non-significant role. Overall, this study provides a comprehensive picture on factors controlling the partitioning of P, with valuable insights for model development, watershed management, and the assessment of water resources around the globe.
主题Water (WAT)
URLhttp://pure.iiasa.ac.at/id/eprint/14913/
来源智库International Institute for Applied Systems Analysis (Austria)
引用统计
资源类型智库出版物
条目标识符http://119.78.100.153/handle/2XGU8XDN/130976
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GB/T 7714
Padrón RS,Gudmundsson L,Greve P,et al. Large-Scale Controls of the Surface Water Balance Over Land-Insights From a Systematic Review and Meta-Analysis.. 2017.
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