气候变化领域集成服务门户(CCPortal): Contribution of oceanic wave propagation from the tropical Pacific to asymmetry of the Ningaloo Niño/Niña

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DOI	10.1007/s00382-020-05268-5
	Contribution of oceanic wave propagation from the tropical Pacific to asymmetry of the Ningaloo Niño/Niña
	Kusunoki H.; Kido S.; Tozuka T.
发表日期	2020
ISSN	0930-7575
起始页码	4865
结束页码	4875
卷号	54
英文摘要	Ningaloo Niño/Niña is the dominant mode of interannual variability of sea surface temperature (SST) in the southeastern Indian Ocean. According to previous studies, both local air-sea interaction and remote forcing contribute to generation and amplification of the Ningaloo Niño/Niña. The latter forcing includes the atmospheric teleconnection and oceanic wave propagation through the Indonesian archipelago, mainly associated with the El Niño/Southern Oscillation (ENSO). One of the most important characteristics of the Ningaloo Niño/Niña is their asymmetry; the Ningaloo Niño is stronger than the Ningaloo Niña. Using a regional ocean modeling system (ROMS), the impact of oceanic wave propagation on the amplitude and asymmetry of SST anomalies associated with the Ningaloo Niño/Niña is investigated. For these purposes, a sensitivity experiment in which oceanic lateral boundary conditions are replaced by the monthly climatology is conducted. It is shown that the oceanic teleconnection transmitted from the western tropical Pacific can explain about 30% of the observed amplitude asymmetry in SST anomalies. Results from composite and heat budget analyses suggest that coastal downwelling (upwelling) Kelvin waves from the western tropical Pacific associated with La Niña (El Niño) that often co-occurs with the Ningaloo Niño (Niña) are stronger (weaker) and contribute to the asymmetry. © 2020, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Coastal Kelvin wave; Ningaloo Niño/Niña; Regional ocean model; Western Australian coast
语种	英语
scopus关键词	air-sea interaction; annual variation; asymmetry; El Nino-Southern Oscillation; heat budget; Kelvin wave; La Nina; ocean wave; sea surface temperature; teleconnection; temperature anomaly; wave propagation; Indian Ocean; Indian Ocean (Southeast); Pacific Ocean; Pacific Ocean (Tropical)
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145459
作者单位	Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan; Application Laboratory (APL), Research Institute for Value‐Added‐Information Generation (VAiG), Japan Agency for Marine‐Earth Science and Technology (JAMSTEC), Yokohama, Japan
推荐引用方式 GB/T 7714	Kusunoki H.,Kido S.,Tozuka T.. Contribution of oceanic wave propagation from the tropical Pacific to asymmetry of the Ningaloo Niño/Niña[J],2020,54.
APA	Kusunoki H.,Kido S.,&Tozuka T..(2020).Contribution of oceanic wave propagation from the tropical Pacific to asymmetry of the Ningaloo Niño/Niña.Climate Dynamics,54.
MLA	Kusunoki H.,et al."Contribution of oceanic wave propagation from the tropical Pacific to asymmetry of the Ningaloo Niño/Niña".Climate Dynamics 54(2020).