气候变化领域集成服务门户(CCPortal): Effects of rainfall data resolution on watershed-scale model performance in predicting runoff

CCPortal

DOI	10.2166/wcc.2014.153
	Effects of rainfall data resolution on watershed-scale model performance in predicting runoff
	Wang H.; Li X.; Hao S.
发表日期	2015
ISSN	20402244
起始页码	227
结束页码	240
卷号	6 期号:2
英文摘要	The hydrologic simulation program-FORTRAN (HSPF) model is widely used to develop management strategies for water resources, but its effectiveness is limited by predictive uncertainties associated with model input data. This study evaluated the effect of rainfall data resolution on the model performance when predicting runoff. We examined hourly, 3-hourly, 12-hourly, and 24-hourly temporal resolutions, and spatial resolutions from seven to one rain gauges. We used a statistical sensitivity analysis to test the effect of resolution on model accuracy, and a dynamic sensitivity analysis to test the effect on model parameters. Our results indicate that the model performance reduces when using a coarser rainfall resolution. The model used the corresponding parameters to absorb the effect of various resolution changes and reduced their impact on the runoff simulations. We used the paired-samples t-test to examine the significance of the rainfall data resolution to the model parameters, which revealed that the model accuracy was more sensitive to the temporal resolution. Our statistical analysis of the dispersion examined the parameter values. It showed that one parameter was sensitive to temporal resolution and three parameters were sensitive to spatial resolution. This study provided useful information for determining HSPF model parameters using rainfall data at different resolutions. © IWA Publishing 2015.
英文关键词	HSPF model; Model performance; Rainfall data; Spatial resolution; Temporal resolution
语种	英语
scopus关键词	Gages; Image resolution; Information management; Rain gages; Runoff; Sensitivity analysis; Water resources; HSPF models; Model performance; Rainfall data; Spatial resolution; Temporal resolution; Rain; hydrological modeling; performance assessment; rainfall; raingauge; runoff; spatial resolution; watershed
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148230
作者单位	State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; College of Water Conservancy and Environmental Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
推荐引用方式 GB/T 7714	Wang H.,Li X.,Hao S.. Effects of rainfall data resolution on watershed-scale model performance in predicting runoff[J],2015,6(2).
APA	Wang H.,Li X.,&Hao S..(2015).Effects of rainfall data resolution on watershed-scale model performance in predicting runoff.Journal of Water and Climate Change,6(2).
MLA	Wang H.,et al."Effects of rainfall data resolution on watershed-scale model performance in predicting runoff".Journal of Water and Climate Change 6.2(2015).