DOI: 10.5194/hess-21-3937-2017
Scopus记录号: 2-s2.0-85026369462
论文题名: Impact of model structure on flow simulation and hydrological realism: From a lumped to a semi-distributed approach
作者: Garavaglia F ; , Le Lay M ; , Gottardi F ; , Garçon R ; , Gailhard J ; , Paquet E ; , Mathevet T
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 8 起始页码: 3937
结束页码: 3952
语种: 英语
Scopus关键词: Calibration
; Catchments
; Climate models
; Evapotranspiration
; Flow simulation
; Genetic algorithms
; Groundwater
; Hydrology
; Model structures
; Runoff
; Soil moisture
; Stream flow
; Automatic optimization
; Efficient genetic algorithms
; Evapotranspiration modeling
; Hydrological modeling
; Model inter comparisons
; Situ and satellite datum
; Snow water equivalent
; Spatial discretizations
; Snow
; calibration
; catchment
; comparative study
; data set
; evapotranspiration
; flow modeling
; genetic algorithm
; hydrological modeling
; model test
; mountain region
; optimization
; performance assessment
; prediction
; runoff
; satellite data
; snowpack
; streamflow
; France
英文摘要: Model intercomparison experiments are widely used to investigate and improve hydrological model performance. However, a study based only on runoff simulation is not sufficient to discriminate between different model structures. Hence, there is a need to improve hydrological models for specific streamflow signatures (e.g., low and high flow) and multi-variable predictions (e.g., soil moisture, snow and groundwater). This study assesses the impact of model structure on flow simulation and hydrological realism using three versions of a hydrological model called MORDOR: the historical lumped structure and a revisited formulation available in both lumped and semi-distributed structures. In particular, the main goal of this paper is to investigate the relative impact of model equations and spatial discretization on flow simulation, snowpack representation and evapotranspiration estimation. Comparison of the models is based on an extensive dataset composed of 50 catchments located in French mountainous regions. The evaluation framework is founded on a multi-criterion split-sample strategy. All models were calibrated using an automatic optimization method based on an efficient genetic algorithm. The evaluation framework is enriched by the assessment of snow and evapotranspiration modeling against in situ and satellite data. The results showed that the new model formulations perform significantly better than the initial one in terms of the various streamflow signatures, snow and evapotranspiration predictions. The semi-distributed approach provides better calibration-validation performance for the snow cover area, snow water equivalent and runoff simulation, especially for nival catchments. © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79094
Appears in Collections: 气候变化事实与影响
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作者单位: EDF-DTG, Department S, 21 avenue de l'Europe, BP 41, Grenoble Cedex 09, France
Recommended Citation:
Garavaglia F,, Le Lay M,, Gottardi F,et al. Impact of model structure on flow simulation and hydrological realism: From a lumped to a semi-distributed approach[J]. Hydrology and Earth System Sciences,2017-01-01,21(8)