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DOI	10.5194/hess-22-2377-2018
	Analytical flow duration curves for summer streamflow in Switzerland
	Clara Santos A.; Manuela Portela M.; Rinaldo A.; Schaefli B.
发表日期	2018
ISSN	1027-5606
起始页码	2377
结束页码	2389
卷号	22 期号:4
英文摘要	This paper proposes a systematic assessment of the performance of an analytical modeling framework for streamflow probability distributions for a set of 25 Swiss catchments. These catchments show a wide range of hydroclimatic regimes, including namely snow-influenced streamflows. The model parameters are calculated from a spatially averaged gridded daily precipitation data set and from observed daily discharge time series, both in a forward estimation mode (direct parameter calculation from observed data) and in an inverse estimation mode (maximum likelihood estimation). The performance of the linear and the nonlinear model versions is assessed in terms of reproducing observed flow duration curves and their natural variability. Overall, the nonlinear model version outperforms the linear model for all regimes, but the linear model shows a notable performance increase with catchment elevation. More importantly, the obtained results demonstrate that the analytical model performs well for summer discharge for all analyzed streamflow regimes, ranging from rainfall-driven regimes with summer low flow to snow and glacier regimes with summer high flow. These results suggest that the model's encoding of discharge-generating events based on stochastic soil moisture dynamics is more flexible than previously thought. As shown in this paper, the presence of snowmelt or ice melt is accommodated by a relative increase in the discharge-generating frequency, a key parameter of the model. Explicit quantification of this frequency increase as a function of mean catchment meteorological conditions is left for future research. © Author(s) 2018.
语种	英语
scopus关键词	Analytical models; Maximum likelihood estimation; Nonlinear systems; Runoff; Snow; Soil moisture; Stochastic models; Stochastic systems; Stream flow; Daily precipitations; Flow duration curve; Inverse estimation; Meteorological condition; Natural variability; Parameter calculation; Soil moisture dynamics; Systematic assessment; Catchments; analytical method; catchment; hydrological modeling; hydrological regime; hydrometeorology; low flow; performance assessment; snow cover; snowmelt; soil moisture; streamflow; summer; Switzerland
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160051
作者单位	Clara Santos, A., School of Architecture Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, Instituto Superior Técnico, Technical University of Lisbon, Lisbon, Portugal; Manuela Portela, M., Instituto Superior Técnico, Technical University of Lisbon, Lisbon, Portugal; Rinaldo, A., School of Architecture Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, Dipartimento di Ingegneria Civile Edile e Ambientale, Universitá Degli Studi di Padova, Padua, Italy; Schaefli, B., School of Architecture Civil and Environmental Engineering (ENAC), École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland, Faculty of Geosciences and Environment, University of Lausanne, Lausanne, Switzerland
推荐引用方式 GB/T 7714	Clara Santos A.,Manuela Portela M.,Rinaldo A.,et al. Analytical flow duration curves for summer streamflow in Switzerland[J],2018,22(4).
APA	Clara Santos A.,Manuela Portela M.,Rinaldo A.,&Schaefli B..(2018).Analytical flow duration curves for summer streamflow in Switzerland.Hydrology and Earth System Sciences,22(4).
MLA	Clara Santos A.,et al."Analytical flow duration curves for summer streamflow in Switzerland".Hydrology and Earth System Sciences 22.4(2018).