气候变化领域集成服务门户(CCPortal): A Unique Feature of the 2019 Extreme Positive Indian Ocean Dipole Event

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DOI	10.1029/2020GL088615
	A Unique Feature of the 2019 Extreme Positive Indian Ocean Dipole Event
	Wang G.; Cai W.; Yang K.; Santoso A.; Yamagata T.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	During austral spring of 2019, an extreme positive Indian Ocean Dipole (pIOD) event occurred, with cold sea surface temperature (SST) anomalies over the eastern equatorial Indian Ocean (EEIO) and warming in the west. Although the growth of the EEIO cold anomalies involves forcing by equatorial nonlinear advection, unique to the 2019 pIOD is an air-sea heat flux that was a forcing to the EEIO cold anomalies, rather than a damping as in previous extreme events. This unique thermodynamic forcing is due to a large latent cooling, which is supported by an unusually strong wind speed contributed by a large southerly anomaly as part of a long-term trend. The wind trend is underpinned by a mean state SST change featuring slower warming off Sumatra-Java. Given that a similar SST trend pattern is projected under greenhouse warming, the likelihood of such thermodynamical forcing operating more frequently in the future needs to be considered. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Heat flux; Surface waters; Wind; Air-sea heat flux; Eastern equatorial Indian ocean; Greenhouse warming; Indian Ocean dipole; Long-term trend; Sea surface temperature anomalies; Thermodynamical; Unique features; Oceanography; air-sea interaction; extreme event; global warming; heat flux; Indian Ocean Dipole; sea surface temperature; temperature anomaly; thermodynamics; Greater Sunda Islands; Java; Sumatra; Sunda Isles
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169762
作者单位	Key Laboratory of Physical Oceanography–Institute for Advanced Ocean Studies, Ocean University of China and Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Center for Southern Hemisphere Oceans Research (CSHOR), CSIRO Oceans and Atmosphere, Hobart, Australia; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Australian Research Council (ARC) Center of Excellence for Climate Extremes, The University of New South Wales, Level 4 Mathews Building, Sydney, NSW, Australia; Application Laboratory, JAMSTEC, Yokohama, Japan
推荐引用方式 GB/T 7714	Wang G.,Cai W.,Yang K.,et al. A Unique Feature of the 2019 Extreme Positive Indian Ocean Dipole Event[J],2020,47(18).
APA	Wang G.,Cai W.,Yang K.,Santoso A.,&Yamagata T..(2020).A Unique Feature of the 2019 Extreme Positive Indian Ocean Dipole Event.Geophysical Research Letters,47(18).
MLA	Wang G.,et al."A Unique Feature of the 2019 Extreme Positive Indian Ocean Dipole Event".Geophysical Research Letters 47.18(2020).