A stochastic rainfall model that can reproduce important rainfall properties across the timescales from several minutes to a decade
A stochastic rainfall model that can reproduce important rainfall properties across the timescales from several minutes to a decade
复制标题
随机降雨模型,可以在几分钟到十年的时间尺度上重现重要的降雨特性
DOI:
10.1016/j.jhydrol.2020.125150
复制
发表时间:
2020
影响因子:
6.4
通讯作者:
Kim D
中科院分区:
文献类型:
--
作者:
Kim D
A stochastic rainfall model that can reproduce various rainfall characteristics at timescales between 5 min and one decade is introduced. The model generates the fine-scale rainfall time series using a randomized Bartlett-Lewis rectangular pulse model. Then the rainstorms are shuffled such that the correlation structure between the consecutive storms are preserved. Finally, the time series is rearranged again at the monthly timescale based on the result of the separate coarse-scale monthly rainfall model. The method was tested using the 69 years of 5-minute rainfall data recorded at Bochum, Germany. The mean, variance, covariance, skewness, and rainfall intermittency were well reproduced at the timescales from 5 min to a decade without any systematic bias. The extreme values were also well reproduced at timescales from 5 min to 3 days. The past-7-day rainfall before an extreme rainfall event, which is highly associated with the extreme flow discharge was reproduced well too. The rainstorm shuffling approaches introduced here may be adopted as a standard procedure in combination with any Poisson cluster rainfall model. The methods are simple and parsimonious, yet significantly reduce the systematic underestimation of rainfall variance at coarse scales, and improve the reproduction of skewness, and extreme rainfall depths values at a range of time-scales, thereby addressing well-known shortcomings of Poisson cluster rainfall models.
登录
查看更多内容
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
S. Lovejoy;D. Schertzer
通讯作者:
D. Schertzer
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
M. Khaliq;C. Cunnane
通讯作者:
C. Cunnane
影响因子:
6.4
作者:
Demetris Koutsoyiannis;C. Onof
通讯作者:
C. Onof
影响因子:
5.4
作者:
F. Serinaldi;C. Kilsby
通讯作者:
C. Kilsby
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
Hoyong Song;Dongkyun Kim;Byung;S. Hwang;Tae‐Woong Kim
通讯作者:
Tae‐Woong Kim