气候变化领域集成服务门户(CCPortal): Interdecadal Change in the Relationship of the Western North Pacific Tropical Cyclogenesis Frequency to Tropical Indian and North Atlantic Ocean SST in Early 1990s

CCPortal

DOI	10.1029/2019JD031493
	Interdecadal Change in the Relationship of the Western North Pacific Tropical Cyclogenesis Frequency to Tropical Indian and North Atlantic Ocean SST in Early 1990s
	Wu R.; Cao X.; Yang Y.
发表日期	2020
ISSN	2169897X
卷号	125 期号:2
英文摘要	The present study investigates reasons of interdecadal changes in the relationship between the western North Pacific (WNP) tropical cyclone (TC) genesis and tropical Indian Ocean (TIO) and tropical North Atlantic Ocean (TNA) sea surface temperature (SST) in early-1990s. It is found that the above interdecadal changes are related to changes in the coherence of TIO and TNA SST variations with equatorial central-eastern Pacific Ocean (EPO) SST variations. During 1970s through mid-1980s, TIO and TNA SSTs tend to vary in phase with EPO SST on both interannual and interdecadal time scales. The combined effects of TIO and EPO SST anomalies induce opposite environment and TC changes in southeastern and northwestern WNP, leading to a weak correlation of basin-wide WNP TC and TIO SST. Similarly, TNA and EPO SST anomalies induce opposite environment and TC changes in northeastern and southeastern WNP and thus basin-wide WNP TC-TNA SST correlation is weak. During late 1990s through early 2000s, TIO and EPO SST variations have a weak coherence due to their opposite relations on interannual and interdecadal time scales. TIO SST anomalies alone induce anomalous circulation over most WNP so that basin-wide WNP TC-TIO SST relationship is strong. The interannual and interdecadal SST variations remain coherent in TNA and EPO but with a switch of sign in their relationship in early 1990s. TNA and EPO SST anomalies induce same environment and TC changes in northeastern and southeastern WNP, and thus, basin-wide WNP TC-TNA SST relationship is strong. Numerical model experiments validate the importance of coherent regional SST anomalies. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	interdecadal change; the Indian and North Atlantic Ocean SST impacts; the western North Pacific; tropical cyclogenesis frequency
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186219
作者单位	School of Earth Sciences, Zhejiang University, Hangzhou, China; Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Wu R.,Cao X.,Yang Y.. Interdecadal Change in the Relationship of the Western North Pacific Tropical Cyclogenesis Frequency to Tropical Indian and North Atlantic Ocean SST in Early 1990s[J],2020,125(2).
APA	Wu R.,Cao X.,&Yang Y..(2020).Interdecadal Change in the Relationship of the Western North Pacific Tropical Cyclogenesis Frequency to Tropical Indian and North Atlantic Ocean SST in Early 1990s.Journal of Geophysical Research: Atmospheres,125(2).
MLA	Wu R.,et al."Interdecadal Change in the Relationship of the Western North Pacific Tropical Cyclogenesis Frequency to Tropical Indian and North Atlantic Ocean SST in Early 1990s".Journal of Geophysical Research: Atmospheres 125.2(2020).