气候变化领域集成服务门户(CCPortal): The Spatiotemporal Clustering of Short-Duration Rainstorms in Shanghai City Using a Sub-Hourly Gauge Network

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DOI	10.1029/2023EA003442
	The Spatiotemporal Clustering of Short-Duration Rainstorms in Shanghai City Using a Sub-Hourly Gauge Network
	Lei, Nuo; Gao, Lisha; Liu, Shuguang; Zhou, Zhengzheng
发表日期	2024
EISSN	2333-5084
起始页码	11
结束页码	3
卷号	11 期号:3
英文摘要	Impacted by both the large-scale climate change and the local hydrometeorological atmosphere, the spatiotemporal structure and properties of short-duration extreme rainfall events in urban areas remain a complex issue. This study explores the spatiotemporal pattern variability of short-duration rainstorm events using an exceptional sub-hourly gauge network in Shanghai, China. A catalog of 207 independent rainstorms is extracted. The hierarchical clustering method is used to examine the spatial and temporal features including rainfall duration, intensity, and coverage for each district with different degrees of urbanization in the 2014-2018 period. The results point to a pronounced spatial heterogeneity with heavier rainfall magnitude in the north. In the urban core area, intensive short-duration rainstorms hit more frequently than in other districts. Rainstorms can be divided into three types from the spatiotemporal process: Type delayed-slow, Type advanced-fast, and Type advanced-slow. The delayed-peak with a higher slope occurs more in the west and the advanced-peak more along the coastal line. The other type of advanced-peak storm with a reverse trend of intensity and coverage concentrates in June-August of the year and the 16:00-20:00 of the day. While 65.6% of the delayed-peak storms only occur in one district, more than half of the advanced-peak appear without other types at the same time. These findings show the importance of observation-based analysis in understanding the spatiotemporal pattern of short-duration storms and provide a reference for storm design of sub-regions in urban areas. There is a pronounced spatial heterogeneity of short-duration rainstorms in Shanghai city Rainstorms can be divided into three types from the spatiotemporal process The occurrence of different rainstorm types varies seasonally and diurnally
英文关键词	short-duration rainstorm; spatial-temporal characteristic; hierarchical clustering; urban areas; spatiotemporal process
语种	英语
WOS研究方向	Astronomy & Astrophysics ; Geology
WOS类目	Astronomy & Astrophysics ; Geosciences, Multidisciplinary
WOS记录号	WOS:001188164300001
来源期刊	EARTH AND SPACE SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302956
作者单位	Tongji University; China Meteorological Administration
推荐引用方式 GB/T 7714	Lei, Nuo,Gao, Lisha,Liu, Shuguang,et al. The Spatiotemporal Clustering of Short-Duration Rainstorms in Shanghai City Using a Sub-Hourly Gauge Network[J],2024,11(3).
APA	Lei, Nuo,Gao, Lisha,Liu, Shuguang,&Zhou, Zhengzheng.(2024).The Spatiotemporal Clustering of Short-Duration Rainstorms in Shanghai City Using a Sub-Hourly Gauge Network.EARTH AND SPACE SCIENCE,11(3).
MLA	Lei, Nuo,et al."The Spatiotemporal Clustering of Short-Duration Rainstorms in Shanghai City Using a Sub-Hourly Gauge Network".EARTH AND SPACE SCIENCE 11.3(2024).