气候变化领域集成服务门户(CCPortal): On the Differences Between the South Pacific Meridional and Quadrupole Modes

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DOI	10.1029/2019JC015500
	On the Differences Between the South Pacific Meridional and Quadrupole Modes
	Ding R.; Li J.; Yang R.; Tseng Y.-H.; Li Y.; Ji K.
发表日期	2020
ISSN	21699275
卷号	125 期号:1
英文摘要	The South Pacific quadrupole (SPQ) and South Pacific meridional mode (SPMM) are the dominant modes of South Pacific sea surface temperature (SST) variability. Both SST modes have been found to affect the occurrence of El Niño-Southern Oscillation (ENSO) events. In this study, the authors examine the differences between the SPQ and SPMM in terms of their spatial structure, temporal variations, and impacts on ENSO using observational and Coupled Model Intercomparison Project Phase 5 (CMIP5) model data. As a local SST mode defined in the subtropical southeast Pacific, the SPMM has large-amplitude SST anomalies (SSTAs) mainly confined in the southeast Pacific. In contrast, as a basin-scale SST mode defined in the South Pacific basin, the SPQ has large-amplitude SSTAs over the southeast Pacific as well as over the southwest Pacific and high-latitude South Pacific. In addition, the SPQ has its temporal variability independent of the SPMM, and the occurrence of strong SPQ events is not always simultaneous with strong SPMM events. The SPQ is more closely linked than the SPMM to ENSO, possibly because the SPQ includes an additional component of SSTAs in the southwest Pacific and high-latitude South Pacific. These findings suggest that compared with the SPMM, the SPQ may act as an improved precursor signal for ENSO events. The results have implications for understanding the respective roles of SSTAs over different regions of the South Pacific in influencing ENSO. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	ENSO; South Pacific meridional mode; South Pacific quadrupole
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187035
作者单位	State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China; 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; Department of Atmospheric Sciences, Yunnan University, Kunming, China; Institute of Oceanography, National Taiwan University, Taipei, Taiwan; Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, Chengdu University of Information Technology, Chengdu, China; College of Atmospheric Sciences, Lanzhou University, Lanzhou, China
推荐引用方式 GB/T 7714	Ding R.,Li J.,Yang R.,et al. On the Differences Between the South Pacific Meridional and Quadrupole Modes[J],2020,125(1).
APA	Ding R.,Li J.,Yang R.,Tseng Y.-H.,Li Y.,&Ji K..(2020).On the Differences Between the South Pacific Meridional and Quadrupole Modes.Journal of Geophysical Research: Oceans,125(1).
MLA	Ding R.,et al."On the Differences Between the South Pacific Meridional and Quadrupole Modes".Journal of Geophysical Research: Oceans 125.1(2020).