气候变化领域集成服务门户(CCPortal): The interaction between the Western Indian Ocean and ENSO in CESM

CCPortal

DOI	10.1007/s00382-018-4438-2
	The interaction between the Western Indian Ocean and ENSO in CESM
	Wieners C.E.; Dijkstra H.A.; de Ruijter W.P.M.
发表日期	2019
ISSN	0930-7575
起始页码	5153
结束页码	5172
卷号	52 期号:2020-09-10
英文摘要	Several previous studies have suggested that a cool western Indian Ocean may induce convection over Indonesia, leading to surface convergence and easterlies over the western equatorial Pacific Ocean. These easterlies then increase the Pacific Warm Water Volume favouring El Niño in the next year. We investigate this mechanism of Indian-Pacific interaction using output from two simulations (at 0. 1 ∘ and 1 ∘ ocean model resolution) with the Community Earth System Model (CESM). No conclusive evidence for the suggested interaction mechanism is found in CESM. Like many other coupled models, CESM has an overly strong sea surface temperature variability in the eastern Indian Ocean due to an exaggerated sensitivity of the sea surface temperature to thermocline variations. Due to this bias the effect of the western Indian Ocean signals on the Pacific, as found from observational analysis, is hidden. Our analysis shows that this bias can be traced to errors in the time-mean vertical temperature profile in the Indian Ocean. This bias needs to be reduced to allow a better investigation of the subtle interactions between the Indian and Pacific Oceans. © 2018, The Author(s).
英文关键词	Bjerknes feedback; convection; El Niño/Southern oscillation (ENSO); Indian Ocean dipole; Outgoing longwave radiation; warm water volume
语种	英语
scopus关键词	atmospheric convection; easterly wave; El Nino-Southern Oscillation; Indian Ocean Dipole; longwave radiation; oceanic convection; sea surface temperature; temperature profile; thermocline; warm water; Indian Ocean; Indian Ocean (West); Indonesia; Pacific Ocean; Pacific Ocean (Equatorial)
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/146356
作者单位	Institute for Marine and Atmospheric research, Utrecht (IMAU), Utrecht University, Utrecht, Netherlands
推荐引用方式 GB/T 7714	Wieners C.E.,Dijkstra H.A.,de Ruijter W.P.M.. The interaction between the Western Indian Ocean and ENSO in CESM[J],2019,52(2020-09-10).
APA	Wieners C.E.,Dijkstra H.A.,&de Ruijter W.P.M..(2019).The interaction between the Western Indian Ocean and ENSO in CESM.Climate Dynamics,52(2020-09-10).
MLA	Wieners C.E.,et al."The interaction between the Western Indian Ocean and ENSO in CESM".Climate Dynamics 52.2020-09-10(2019).