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来源类型 | Article |
规范类型 | 其他 |
DOI | 10.1002/2017WR021215 |
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) |
URL | http://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 |
推荐引用方式 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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