globalchange  > 气候变化与战略
DOI: 10.5194/hess-24-869-2020
论文题名:
Event selection and two-stage approach for calibrating models of green urban drainage systems
作者: Broekhuizen I.; Leonhardt G.; Marsalek J.; Viklander M.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2020
卷: 24, 期:2
起始页码: 869
结束页码: 885
语种: 英语
Scopus关键词: Earth sciences ; Hydrology ; Computational demands ; Model calibration and validation ; Rainfall-runoff events ; Spatial model resolutions ; Stormwater management model(SWMM) ; Two stage approach ; Urban drainage model ; Urban drainage systems ; Runoff ; hydrological modeling ; peak flow ; rainfall-runoff modeling ; runoff ; urban drainage
英文摘要: The calibration of urban drainage models is typically performed based on a limited number of observed rainfall-runoff events, which may be selected from a larger dataset in different ways. In this study, 14 single- and twostage strategies for selecting the calibration events were tested in calibration of a high- and low-resolution StormWater Management Model (SWMM) of a predominantly green urban area. The two-stage strategies used events with runoff only from impervious areas to calibrate the associated parameters, prior to using larger events to calibrate the parameters relating to green areas. Even though all 14 strategies resulted in successful model calibration (Nash-Sutcliffe efficiency; NSE > 0:5), the difference between the best and worst strategies reached 0.2 in the NSE, and the calibrated parameter values notably varied. The various calibration strategies satisfactorily predicted 7 to 13 out of 19 validation events. The two-stage strategies reproduced more validation events poorly (NSE< 0) than the single-stage strategies, but they also reproduced more events well (NSE> 0:5) and performed better than the single-stage strategies in terms of total runoff volume and peak flow rates, particularly when using a low spatial model resolution. The results show that various strategies for selecting calibration events may lead in some cases to different results in the validation phase and that calibrating impervious and green-area parameters in two separate steps in two-stage strategies may increase the effectiveness of model calibration and validation by reducing the computational demand in the calibration phase and improving model performance in the validation phase. © Author(s) 2020.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162781
Appears in Collections:气候变化与战略

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作者单位: Broekhuizen, I., Urban Water Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleä University of Technology, Luleä, Sweden; Leonhardt, G., Urban Water Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleä University of Technology, Luleä, Sweden; Marsalek, J., Urban Water Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleä University of Technology, Luleä, Sweden; Viklander, M., Urban Water Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleä University of Technology, Luleä, Sweden

Recommended Citation:
Broekhuizen I.,Leonhardt G.,Marsalek J.,et al. Event selection and two-stage approach for calibrating models of green urban drainage systems[J]. Hydrology and Earth System Sciences,2020-01-01,24(2)
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