DOI: 10.1002/2017JD027758
Scopus记录号: 2-s2.0-85042363971
论文题名: A Null-Parameter Formula of Storage-Evapotranspiration Relationship at Catchment Scale and its Application for a New Hydrological Model
作者: Han P.-F. ; Wang X.-S. ; Istanbulluoglu E.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 4 起始页码: 2082
结束页码: 2097
语种: 英语
英文关键词: annual water balance
; Budyko hypothesis
; change in water storage
; groundwater
; proportionality hypothesis
; soil-plant-atmosphere continuum
英文摘要: Different formulas have been developed to estimate the mean annual evapotranspiration ratio (E/P) from the mean annual aridity index (Ep/P) based on the Budyko framework. A major challenge in using the Budyko framework for the interannual behaviors of a catchment is the missed storage. Here we develop a null-parameter formula of the storage-evapotranspiration relationship based on the simplified proportionality hypothesis, which takes the storage in the soil-plant-atmosphere continuum as the accessible water for the evapotranspiration processes. In this formula, the annual E/P depends on the annual Ep/P and S/P values where S is the soil-plant-atmosphere continuum storage. An annual water balance model including groundwater storage is required to estimate the annual runoff and S/P. We develop a new conceptual hydrological model with only three parameters in addition to the null-parameter formula. The model performs well in the case study of the North Loup River Basin in Nebraska. It is found that the annual E/P increases with the increasing Ep/P around a path that is different from conventional Budyko curves. For mean annual water balance, the triparameter model results in one-parameter formulas to estimate both of the mean annual E/P and S/P so that the status of storage can be included in the Budyko framework. This study presents a new simple approach to investigate the interannual variability of catchments with varying dryness. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114447
Appears in Collections: 气候减缓与适应
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作者单位: Ministry of Education Key Laboratory of Groundwater Circulation and Evolution, China University of Geosciences, Beijing, China; Department of Civil and Environmental Engineering, University of Washington, Seattle, WA, United States
Recommended Citation:
Han P.-F.,Wang X.-S.,Istanbulluoglu E.. A Null-Parameter Formula of Storage-Evapotranspiration Relationship at Catchment Scale and its Application for a New Hydrological Model[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(4)