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DOI	10.1007/s00382-020-05331-1
	Indian Ocean tripole mode and its associated atmospheric and oceanic processes
	Zhang Y.; Li J.; Zhao S.; Zheng F.; Feng J.; Li Y.; Xu Y.
发表日期	2020
ISSN	0930-7575
起始页码	1367
结束页码	1383
卷号	55
英文摘要	Differing from the Indian Ocean dipole (IOD) that has sea surface temperature anomalies (SSTAs) of opposing signs over the tropical southeastern and western Indian Ocean, a tripole pattern, characterized by positive (negative) SSTAs over the tropical central (southeastern and western) Indian Ocean, is observed and named the Indian Ocean tripole (IOT). This study proposes the concept of the IOT and further investigates the associated atmospheric and oceanic processes. Using empirical orthogonal function (EOF) analysis, the IOT (IOD) is represented by the third (second) leading mode of the monthly SSTAs in the tropical Indian Ocean, explaining about 8.2% (10.3%) of the total variance. The IOT peaks in boreal summer, while the IOD has its mature phase in boreal fall. The spatio-temporal differences, together with the significant separation of these two EOF patterns, illustrate that the IOT is independent of the IOD. Heat budget diagnoses indicate that the anomalous temperature over the southeastern and western Indian Ocean is mainly generated by the net heat flux during April–May and by the total ocean advection in June–August. In contrast, the anomalous temperature is mainly driven by the advection of the mean temperature by the anomalous current in April and the residual term in May–June over the central Indian Ocean, which is replaced by advection of the anomalous temperature by the mean zonal current in July. © 2020, The Author(s).
英文关键词	Atmospheric and oceanic processes; Heat budget; Indian Ocean tripole (IOT)
语种	英语
scopus关键词	air-sea interaction; heat budget; heat flux; Indian Ocean Dipole; sea surface temperature; temperature anomaly; Indian Ocean
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/145358
作者单位	Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES)/Key Laboratory of Physical Oceanography/Institute for Advanced Ocean Studies, Ocean University of China, Qingdao, 266100, China; Laboratory for Ocean Dynamics and Climate, Pilot Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; CIC-FEMD/ILCEC, Key Laboratory of Meteorological Disaster of Ministry of Education, and College of Atmospheric Science, Nanjing University of Information Science and Technology, Nanjing, China; Department of Atmospheric Sciences, University of Hawaii at Mānoa, Honolulu, HI, United States; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; College of Global Change and Earth System Science (GCESS), Beijing Normal University, Beijing, 100875, China; College of Atmospheric Science, Plateau Atmosphere and Environment Key Laboratory of Sich...
推荐引用方式 GB/T 7714	Zhang Y.,Li J.,Zhao S.,et al. Indian Ocean tripole mode and its associated atmospheric and oceanic processes[J],2020,55.
APA	Zhang Y..,Li J..,Zhao S..,Zheng F..,Feng J..,...&Xu Y..(2020).Indian Ocean tripole mode and its associated atmospheric and oceanic processes.Climate Dynamics,55.
MLA	Zhang Y.,et al."Indian Ocean tripole mode and its associated atmospheric and oceanic processes".Climate Dynamics 55(2020).