DOI: 10.5194/hess-20-2913-2016
Scopus记录号: 2-s2.0-84979268323
论文题名: Simultaneous calibration of hydrological models in geographical space
作者: Bárdossy A ; , Huang Y ; , Wagener T
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2016
卷: 20, 期: 7 起始页码: 2913
结束页码: 2928
语种: 英语
Scopus关键词: Calibration
; Hydrology
; Runoff
; Calibration methodologies
; Dynamical parameters
; Individual behavior
; Individual calibrations
; Numerical experiments
; Performance criterion
; Simultaneous calibration
; Spatial calibration
; Catchments
; calibration
; catchment
; discharge
; experimental study
; hydrological modeling
; methodology
; numerical model
; performance assessment
; spatial variation
; water budget
英文摘要: Hydrological models are usually calibrated for selected catchments individually using specific performance criteria. This procedure assumes that the catchments show individual behavior. As a consequence, the transfer of model parameters to other ungauged catchments is problematic. In this paper, the possibility of transferring part of the model parameters was investigated. Three different conceptual hydrological models were considered. The models were restructured by introducing a new parameter • which exclusively controls water balances. This parameter was considered as individual to each catchment. All other parameters, which mainly control the dynamics of the discharge (dynamical parameters), were considered for spatial transfer. Three hydrological models combined with three different performance measures were used in three different numerical experiments to investigate this transferability. The first numerical experiment, involving individual calibration of the models for 15 selected MOPEX catchments, showed that it is difficult to identify which catchments share common dynamical parameters. Parameters of one catchment might be good for another catchment but not the opposite. In the second numerical experiment, a common spatial calibration strategy was used. It was explicitly assumed that the catchments share common dynamical parameters. This strategy leads to parameters which perform well on all catchments. A leave-one-out common calibration showed that in this case a good parameter transfer to ungauged catchments can be achieved. In the third numerical experiment, the common calibration methodology was applied for 96 catchments. Another set of 96 catchments was used to test the transfer of common dynamical parameters. The results show that even a large number of catchments share similar dynamical parameters. The performance is worse than those obtained by individual calibration, but the transfer to ungauged catchments remains possible. The performance of the common parameters in the second experiment was better than in the third, indicating that the selection of the catchments for common calibration is important. © 2016 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78785
Appears in Collections: 气候变化事实与影响
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作者单位: Institute for Modelling Hydraulic and Environmental Engineering, University of Stuttgart, Stuttgart, Germany; Department of Civil Engineering, Queen's School of Engineering, University of Bristol, Bristol, United Kingdom
Recommended Citation:
Bárdossy A,, Huang Y,, Wagener T. Simultaneous calibration of hydrological models in geographical space[J]. Hydrology and Earth System Sciences,2016-01-01,20(7)