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DOI	10.5194/hess-22-1263-2018
	A coupled stochastic rainfall-evapotranspiration model for hydrological impact analysis
	Tu Pham M.; Vernieuwe H.; De Baets B.; Verhoest N.E.C.
发表日期	2018
ISSN	1027-5606
起始页码	1263
结束页码	1283
卷号	22 期号:2
英文摘要	A hydrological impact analysis concerns the study of the consequences of certain scenarios on one or more variables or fluxes in the hydrological cycle. In such an exercise, discharge is often considered, as floods originating from extremely high discharges often cause damage. Investigating the impact of extreme discharges generally requires long time series of precipitation and evapotranspiration to be used to force a rainfall-runoff model. However, such kinds of data may not be available and one should resort to stochastically generated time series, even though the impact of using such data on the overall discharge, and especially on the extreme discharge events, is not well studied. In this paper, stochastically generated rainfall and corresponding evapotranspiration time series, generated by means of vine copulas, are used to force a simple conceptual hydrological model. The results obtained are comparable to the modelled discharge using observed forcing data. Yet, uncertainties in the modelled discharge increase with an increasing number of stochastically generated time series used. Notwithstanding this finding, it can be concluded that using a coupled stochastic rainfall-evapotranspiration model has great potential for hydrological impact analysis. © Author(s) 2018.
语种	英语
scopus关键词	Evapotranspiration; Precipitation (meteorology); Rain; Stochastic systems; Time series; Evapotranspiration modeling; Extreme discharges; Hydrological cycles; Hydrological impacts; Hydrological modeling; Long time series; Rainfall-runoff modeling; Stochastic rainfalls; Stochastic models; discharge; evapotranspiration; flood; graphical method; hydrological modeling; hydrology; precipitation (climatology); rainfall-runoff modeling; stochasticity; time series
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/160111
作者单位	Tu Pham, M., Laboratory of Hydrology and Water Management, Ghent University, Coupure links 653, Ghent, 9000, Belgium; Vernieuwe, H., KERMIT, Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure links 653, Ghent, 9000, Belgium; De Baets, B., KERMIT, Department of Mathematical Modelling, Statistics and Bioinformatics, Ghent University, Coupure links 653, Ghent, 9000, Belgium; Verhoest, N.E.C., Laboratory of Hydrology and Water Management, Ghent University, Coupure links 653, Ghent, 9000, Belgium
推荐引用方式 GB/T 7714	Tu Pham M.,Vernieuwe H.,De Baets B.,et al. A coupled stochastic rainfall-evapotranspiration model for hydrological impact analysis[J],2018,22(2).
APA	Tu Pham M.,Vernieuwe H.,De Baets B.,&Verhoest N.E.C..(2018).A coupled stochastic rainfall-evapotranspiration model for hydrological impact analysis.Hydrology and Earth System Sciences,22(2).
MLA	Tu Pham M.,et al."A coupled stochastic rainfall-evapotranspiration model for hydrological impact analysis".Hydrology and Earth System Sciences 22.2(2018).