气候变化领域集成服务门户(CCPortal): Interdecadal variability of tropical cyclone genesis frequency in western North Pacific and South Pacific ocean basins

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DOI	10.1088/1748-9326/ab8093
	Interdecadal variability of tropical cyclone genesis frequency in western North Pacific and South Pacific ocean basins
	Shan K.; Yu X.
发表日期	2020
ISSN	17489318
卷号	15 期号:6
英文摘要	Variability of tropical cyclone (TC) genesis frequency in the western North Pacific and South Pacific ocean basins in the interdecadal scale is studied. It is demonstrated that the TC genesis frequency in these ocean basins experienced an abrupt decrease near the end of the 20th century. The decreased occurrence of TC genesis in the two recent decades is mainly located in the low-latitude regions at the eastern side of the two ocean basins. It is also shown that a significant part of the decreased TC genesis occurred during October to December, i.e. the post-peak season in the western North Pacific ocean basin and the pre-peak season in the South Pacific ocean basin. The interdecadal trend of variation in the TC genesis frequency in these adjacent two ocean basins seems to be mainly due to a common mechanism, i.e. the variation in the atmospheric vorticity. In contrast to the decrease in the total TC genesis, the intense typhoon occurrence frequency experienced an interdecadal increase during the same period. This trend for intense typhoons is particularly clear in the western North Pacific ocean basin. The zonal distribution of the increased number in the intense typhoon occurrence shows a similar pattern to the increased value of the sea surface temperature. It is then suggested that the variation in the intense typhoon occurrence frequency in the western North Pacific ocean basin is related to a change in the La Niña-like sea surface warming pattern. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	environmental factors; intense typhoon; interdecadal variability; regional and seasonal variations; ropical cyclone genesis frequency
语种	英语
scopus关键词	Hurricanes; Storms; Surface waters; Tropics; Atmospheric vorticity; Inter-decadal variability; Sea surface temperature (SST); Similar pattern; South pacific oceans; Tropical cyclone; Typhoon occurrence frequencies; Western North Pacific; Oceanography; La Nina; ocean basin; sea surface temperature; tropical cyclone; typhoon; Pacific Ocean; Pacific Ocean (North); Pacific Ocean (South)
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/153988
作者单位	State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing, China
推荐引用方式 GB/T 7714	Shan K.,Yu X.. Interdecadal variability of tropical cyclone genesis frequency in western North Pacific and South Pacific ocean basins[J],2020,15(6).
APA	Shan K.,&Yu X..(2020).Interdecadal variability of tropical cyclone genesis frequency in western North Pacific and South Pacific ocean basins.Environmental Research Letters,15(6).
MLA	Shan K.,et al."Interdecadal variability of tropical cyclone genesis frequency in western North Pacific and South Pacific ocean basins".Environmental Research Letters 15.6(2020).