To assess the influence of climate change on the estimates of extreme wind speeds induced by typhoons, the present study employs a Monte Carlo simulation approach to forecast the extreme wind speeds in the proximity of Hong Kong when the sea surface temperatures rise as projected by various climate change models according to the Representative Concentration Pathway (RCP) 8.5. In addition, the present study shows the first attempt to quantitatively assess the uncertainty buried in the prediction of the extreme wind speed in association with typhoons taking the rise in sea surface temperatures, and therefore climate change, into consideration. It is found that climate change leads, with high confidence, to the increase in extreme wind speeds brought about by typhoons. From the numerical simulation, it is found that the mean wind speeds associated with typhoons impacting Hong Kong rise from 10.8 m/s (1961–1990) to 12.4 m/s (2051–2080), and the extreme wind speed is 47.5 m/s during 2051–2080 under the RCP 8.5 climate scenario, which is 21.2% higher than that corresponding to the period of 1961–1990. As for the quantification of uncertainties in the extreme wind estimates, the inter-quartile ranges for the sea surface temperatures projected by various climate models in July and October are 9.5% and 8.2% in 2050, respectively, and go up to 9.6% and 9.9% in 2080. The extreme wind speeds with 50 years return period show inter-quartile ranges of 14.2% in 2050, and the value decreases to 12.8% in 2080.
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August 2024
Research Article|
August 13 2024
Uncertainty of typhoon extreme wind speeds in Hong Kong integrating the effects of climate change
Special Collection:
Flow and Civil Structures
Jiayao Wang (王佳瑶)
;
Jiayao Wang (王佳瑶)
(Data curation, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University
, Kowloon, Hong Kong
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Siqi Cao (曹思奇)
;
Siqi Cao (曹思奇)
(Methodology, Writing – review & editing)
2
Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology
, Clear Water Bay, Kowloon, Hong Kong
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Runze Zhang (张润泽);
Runze Zhang (张润泽)
(Visualization, Writing – review & editing)
3
China Construction Eighth Engineering Division Co., Ltd
. Southwest Branch, Chengdu, Sichuan, China
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Sunwei Li (李孙伟)
;
Sunwei Li (李孙伟)
a)
(Funding acquisition, Methodology, Supervision, Writing – review & editing)
4
Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School
, Shenzhen, Guangdong, China
a)Author to whom correspondence should be addressed: li.sunwei@sz.tsinghua.edu.cn
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Tim K. T. Tse (谢锦添)
Tim K. T. Tse (谢锦添)
(Supervision)
2
Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology
, Clear Water Bay, Kowloon, Hong Kong
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a)Author to whom correspondence should be addressed: li.sunwei@sz.tsinghua.edu.cn
Physics of Fluids 36, 087126 (2024)
Article history
Received:
May 27 2024
Accepted:
July 24 2024
Citation
Jiayao Wang, Siqi Cao, Runze Zhang, Sunwei Li, Tim K. T. Tse; Uncertainty of typhoon extreme wind speeds in Hong Kong integrating the effects of climate change. Physics of Fluids 1 August 2024; 36 (8): 087126. https://doi.org/10.1063/5.0220590
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