气候变化领域集成服务门户(CCPortal): A modeling study of an extreme rainfall event along the northern coast ofTaiwan on 2 June 2017

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DOI	10.5194/acp-23-501-2023
	A modeling study of an extreme rainfall event along the northern coast ofTaiwan on 2 June 2017
	Wang, Chung-Chieh; Yeh, Ting-Yu; Chang, Chih-Sheng; Li, Ming-Siang; Tsuboki, Kazuhisa; Liu, Ching-Hwang
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	501
结束页码	521
卷号	23 期号:1 页码:21
英文摘要	In this study, the extreme rainfall event on 2 June 2017along the northern coast of Taiwan is studied from a modeling perspective.While a peak amount of 645 mm was observed, two 1 km experiments producedabout 400 and 541 mm, respectively, using different initial and boundaryconditions, and thus are compared to isolate the key reasons for a highertotal amount in the second run. While the conditions in the frontal intensityand its slow movement are similar in both runs, the frontal rainband remainsstationary for a long period in this second run due to a frontal disturbancethat acts to enhance the prefrontal southwesterly flow and focuses itsconvergence with the postfrontal flow right across the coastline.Identified as the key difference, this low-pressure disturbance is supportedby the observation, and without it in the first run, multiple slow-movingrainbands pass through the coastal region and produce more widely spread butless concentrated rainfall, resulting in the lower peak amount bycomparison. To explore and test the effects of Taiwan's topography in this event, twoadditional 1 km runs are also used. It is found that the removal of theterrain in northern Taiwan allowed the postfrontal cold air to move moreinland and the rainfall became less concentrated, in agreement with a recentstudy. Also, when the entire island topography of Taiwan is removed, theresult showed significant differences. In this case, the blocking anddeflecting effects on the prefrontal flow are absent, and the heavyrainfall in northern Taiwan does not occur.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000910601800001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273411
作者单位	National Taiwan Normal University; Nagoya University; Chinese Culture University
推荐引用方式 GB/T 7714	Wang, Chung-Chieh,Yeh, Ting-Yu,Chang, Chih-Sheng,et al. A modeling study of an extreme rainfall event along the northern coast ofTaiwan on 2 June 2017[J],2023,23(1):21.
APA	Wang, Chung-Chieh,Yeh, Ting-Yu,Chang, Chih-Sheng,Li, Ming-Siang,Tsuboki, Kazuhisa,&Liu, Ching-Hwang.(2023).A modeling study of an extreme rainfall event along the northern coast ofTaiwan on 2 June 2017.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(1),21.
MLA	Wang, Chung-Chieh,et al."A modeling study of an extreme rainfall event along the northern coast ofTaiwan on 2 June 2017".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.1(2023):21.