Calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system

The changing nature of the Earth's climate and rapid urbanization lead to the change of rainfall characteristics in urban areas, the stability of rainfall series is destroyed and it is a difficult challenge to consider this change in urban drainage simulation. A generalized additive model (GAML...

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Autores principales:	Zening Wu, Shifeng Liu, Huiliang Wang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	gamlss nonstationarity rainstorm intensity formula short duration urban drainage system Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/e40af8d030e64926bb71ef06eafa7d56
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spelling	oai:doaj.org-article:e40af8d030e64926bb71ef06eafa7d562021-11-10T00:00:14ZCalculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system2040-22442408-935410.2166/wcc.2021.151https://doaj.org/article/e40af8d030e64926bb71ef06eafa7d562021-11-01T00:00:00Zhttp://jwcc.iwaponline.com/content/12/7/3464https://doaj.org/toc/2040-2244https://doaj.org/toc/2408-9354The changing nature of the Earth's climate and rapid urbanization lead to the change of rainfall characteristics in urban areas, the stability of rainfall series is destroyed and it is a difficult challenge to consider this change in urban drainage simulation. A generalized additive model (GAMLSS) with time as covariant was established to calculate and predict the design values of extreme rainstorm return period, and the nonstationary short-duration rainstorm intensity formula of three periods was fitted and compared with the stationary formula. The urban water simulation model and the MIKE 21 two-dimensional surface flow model are coupled to simulate the urban flood under different formulas and different return periods. The results show that the nonstationary results are worse in the same period. In the 5-year return period rainfall–runoff simulation performance, the nonstationary inundation area is 18.5% more than the stationary, and inundation water is 23.5% more than the stationary. The nonstationary simulation results show higher inundation depth and slower flood recession process. These gaps will widen in the future, but they will become less significant as the return period increases. It can provide a reference for the study of flood control work and the design of existing drainage infrastructure in the region. HIGHLIGHTS Providing technical support for local urban planning considering nonstationarity.; The GAMLSS method is applied to short-duration extreme rainstorm.; The effects of nonstationarity are evaluated in detail by coupling the urban water management model and the MIKE 21 surface flow model.;Zening WuShifeng LiuHuiliang WangIWA Publishingarticlegamlssnonstationarityrainstorm intensity formulashort durationurban drainage systemEnvironmental technology. Sanitary engineeringTD1-1066Environmental sciencesGE1-350ENJournal of Water and Climate Change, Vol 12, Iss 7, Pp 3464-3480 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	gamlss nonstationarity rainstorm intensity formula short duration urban drainage system Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350
spellingShingle	gamlss nonstationarity rainstorm intensity formula short duration urban drainage system Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Zening Wu Shifeng Liu Huiliang Wang Calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system
description	The changing nature of the Earth's climate and rapid urbanization lead to the change of rainfall characteristics in urban areas, the stability of rainfall series is destroyed and it is a difficult challenge to consider this change in urban drainage simulation. A generalized additive model (GAMLSS) with time as covariant was established to calculate and predict the design values of extreme rainstorm return period, and the nonstationary short-duration rainstorm intensity formula of three periods was fitted and compared with the stationary formula. The urban water simulation model and the MIKE 21 two-dimensional surface flow model are coupled to simulate the urban flood under different formulas and different return periods. The results show that the nonstationary results are worse in the same period. In the 5-year return period rainfall–runoff simulation performance, the nonstationary inundation area is 18.5% more than the stationary, and inundation water is 23.5% more than the stationary. The nonstationary simulation results show higher inundation depth and slower flood recession process. These gaps will widen in the future, but they will become less significant as the return period increases. It can provide a reference for the study of flood control work and the design of existing drainage infrastructure in the region. HIGHLIGHTS Providing technical support for local urban planning considering nonstationarity.; The GAMLSS method is applied to short-duration extreme rainstorm.; The effects of nonstationarity are evaluated in detail by coupling the urban water management model and the MIKE 21 surface flow model.;
format	article
author	Zening Wu Shifeng Liu Huiliang Wang
author_facet	Zening Wu Shifeng Liu Huiliang Wang
author_sort	Zening Wu
title	Calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system
title_short	Calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system
title_full	Calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system
title_fullStr	Calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system
title_full_unstemmed	Calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system
title_sort	calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/e40af8d030e64926bb71ef06eafa7d56
work_keys_str_mv	AT zeningwu calculationmethodofshortdurationrainstormintensityformulaconsideringnonstationarityofrainfallseriesimpactsonthesimulationofurbandrainagesystem AT shifengliu calculationmethodofshortdurationrainstormintensityformulaconsideringnonstationarityofrainfallseriesimpactsonthesimulationofurbandrainagesystem AT huiliangwang calculationmethodofshortdurationrainstormintensityformulaconsideringnonstationarityofrainfallseriesimpactsonthesimulationofurbandrainagesystem
_version_	1718440797130457088

Calculation method of short-duration rainstorm intensity formula considering nonstationarity of rainfall series: impacts on the simulation of urban drainage system

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