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DOI10.5194/hess-22-6519-2018
The probability distribution of daily precipitation at the point and catchment scales in the United States
Ye L.; Hanson L.S.; Ding P.; Wang D.; Vogel R.M.
发表日期2018
ISSN1027-5606
起始页码6519
结束页码6531
卷号22期号:12
英文摘要Choosing a probability distribution to represent daily precipitation depths is important for precipitation frequency analysis, stochastic precipitation modeling and in climate trend assessments. Early studies identified the two-parameter gamma (G2) distribution as a suitable distribution for wet-day precipitation based on the traditional goodness-of-fit tests. Here, probability plot correlation coefficients and L-moment diagrams are used to examine distributional alternatives for the wet-day series of daily precipitation for hundreds of stations at the point and catchment scales in the United States. Importantly, both Pearson Type-III (P3) and kappa (KAP) distributions perform very well, particularly for point rainfall. Our analysis indicates that the KAP distribution best describes the distribution of wet-day precipitation at the point scale, whereas the performance of G2 and P3 distributions are comparable for wet-day precipitation at the catchment scale, with P3 generally providing the improved goodness of fit over G2. Since the G2 distribution is currently the most widely used probability density function, our findings could be considerably important, especially within the context of climate change investigations. © 2018 Copernicus. All rights reserved.
语种英语
scopus关键词Catchments; Climate change; Probability density function; Runoff; Stochastic systems; Catchment scale; Correlation coefficient; Daily precipitations; Goodness of fit; Goodness-of-fit test; Precipitation frequency; Precipitation model; Probability plot; Probability distributions; catchment; climate change; diagram; precipitation assessment; probability; spatial distribution; wet season; United States
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/159821
作者单位Ye, L., School of Hydraulic Engineering, Dalian University of Technology, Dalian, China; Hanson, L.S., Institute for Public Research, Center for Naval Analyses, Arlington, VA, United States; Ding, P., School of Hydraulic Engineering, Dalian University of Technology, Dalian, China; Wang, D., Department of Civil, Environmental, and Construction Engineering, University of Central Florida, Orlando, FL, United States; Vogel, R.M., Department of Civil and Environmental Engineering, Tufts University, Medford, MA, United States
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GB/T 7714
Ye L.,Hanson L.S.,Ding P.,et al. The probability distribution of daily precipitation at the point and catchment scales in the United States[J],2018,22(12).
APA Ye L.,Hanson L.S.,Ding P.,Wang D.,&Vogel R.M..(2018).The probability distribution of daily precipitation at the point and catchment scales in the United States.Hydrology and Earth System Sciences,22(12).
MLA Ye L.,et al."The probability distribution of daily precipitation at the point and catchment scales in the United States".Hydrology and Earth System Sciences 22.12(2018).
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