气候变化领域集成服务门户(CCPortal): Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation

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DOI	10.1007/s00382-021-05643-w
	Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation
	Xie T.; Li J.; Chen K.; Zhang Y.; Sun C.
发表日期	2021
ISSN	0930-7575
起始页码	767
结束页码	782
卷号	56 期号:2021-09-10
英文摘要	The multidecadal variability of Indian Ocean sea surface temperature (IOSST) has an important impact on both the regional Indian Ocean climate and the global climate. Here, we explore multidecadal variability in the annual IOSST. Observational analysis shows that the annual IOSST multidecadal variability is not only related to the Pacific Decadal Oscillation (PDO), but also to the North Atlantic Oscillation (NAO). The NAO leads by 15–20 years the detrended annual IOSST in which the PDO signal of the same period has been removed. Further analysis reveals that the NAO leads the annual IOSST multidecadal variability through its leading effect on the Atlantic Multidecadal Oscillation (AMO). The AMO affects the vertical wind anomaly in the Indian Ocean region through the Atlantic–Indian Ocean multidecadal teleconnection (AIMT), which in turn affects the net longwave radiation in the Indian Ocean region, thus driving the annual IOSST multidecadal variability. A Hasselmann model based on NAO and PDO further verify the joint influence of the NAO and PDO on the multidecadal variability of the IOSST. A PDO-based linear model and a climate model that incorporates the NAO signal are also constructed for the annual IOSST. Results show that the climate model with the NAO signal can better simulate the annual IOSST. This again verifies that the NAO is part of the annual IOSST multidecadal variability source, indicating that the annual IOSST variability may be due to the combined influences of the NAO and PDO. © 2021, The Author(s).
英文关键词	Atlantic Multidecadal Oscillation; Indian Ocean sea surface temperature; North Atlantic Oscillation; Pacific Decadal Oscillation
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/183289
作者单位	College of Global Change and Earth System Sciences (GCESS), Beijing Normal University, Beijing, 100875, China; Key Laboratory of Physical Oceanography, Frontiers Science Center for Deep Ocean Multispheres and Earth System (FDOMES), 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
推荐引用方式 GB/T 7714	Xie T.,Li J.,Chen K.,et al. Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation[J],2021,56(2021-09-10).
APA	Xie T.,Li J.,Chen K.,Zhang Y.,&Sun C..(2021).Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation.Climate Dynamics,56(2021-09-10).
MLA	Xie T.,et al."Origin of Indian Ocean multidecadal climate variability: role of the North Atlantic Oscillation".Climate Dynamics 56.2021-09-10(2021).