气候变化领域集成服务门户(CCPortal): The intensification of short-duration rainfall extremes due to climate change-Need for a frequent update of intensity-duration-frequency curves

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DOI	10.1016/j.cliser.2023.100349
	The intensification of short-duration rainfall extremes due to climate change-Need for a frequent update of intensity-duration-frequency curves
	Tamm, Ottar; Saaremae, Egle; Rahkema, Kristiina; Jaagus, Jaak; Tamm, Toomas
发表日期	2023
ISSN	2405-8807
卷号	30
英文摘要	Numerous studies have investigated future changes in extreme precipitation by employing climate models. However, trends in extreme short-duration (20-180 min) rainfall intensities, that is, design storm rainfall in-tensities used for stormwater infrastructure design, have received considerably less attention despite their importance. This study quantified the effect of climate change on design storm intensity based on observations. Trends were investigated for diverse short-term rainfall durations, ranging from 20 to 180 min, at 11 meteo-rological stations in Northern Europe, Estonia. The Mann-Kendall test and Sen's slope estimator were used to detect trends and calculate the trend magnitudes by analyzing a 70 year period of high-resolution temporal observed rainfall data. The Sen's slope indicated a positive magnitude of slopes for all the durations and stations investigated, and two stations in Northeast Estonia showed significantly increasing trends (p < 0.05). Unsur-prisingly, the spatial distribution of trends revealed notable variations from station to station, as extreme rainfall events are heavily localized due to cloudburst. Despite this variety, it can be generalized that the annual maximum rainfall intensities in Estonia have increased at an average rate of 4 % per decade due to changing climate conditions, invariant of the rainfall duration analyzed. The use of decades enables to easily keep the intensity-duration-frequency curves updated, and it is more practical and relatable for engineers as well. The findings of this study provide critical knowledge for urban water management decision-makers, indicating the need to frequently update urban design criteria to design climate resilient urban infrastructure.
英文关键词	Extreme precipitation; Rainfall trend analysis; Climate change; Stormwater drainage; Climate resilience
语种	英语
WOS研究方向	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS类目	Science Citation Index Expanded (SCI-EXPANDED) ; Social Science Citation Index (SSCI)
WOS记录号	WOS:000944656800001
来源期刊	CLIMATE SERVICES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/280393
作者单位	Aalto University; Estonian University of Life Sciences; University of Tartu; University of Tartu; Tartu University Institute of Ecology & Earth Sciences
推荐引用方式 GB/T 7714	Tamm, Ottar,Saaremae, Egle,Rahkema, Kristiina,et al. The intensification of short-duration rainfall extremes due to climate change-Need for a frequent update of intensity-duration-frequency curves[J],2023,30.
APA	Tamm, Ottar,Saaremae, Egle,Rahkema, Kristiina,Jaagus, Jaak,&Tamm, Toomas.(2023).The intensification of short-duration rainfall extremes due to climate change-Need for a frequent update of intensity-duration-frequency curves.CLIMATE SERVICES,30.
MLA	Tamm, Ottar,et al."The intensification of short-duration rainfall extremes due to climate change-Need for a frequent update of intensity-duration-frequency curves".CLIMATE SERVICES 30(2023).