Why does the IOD-ENSO teleconnection disappear in some decades?

doi:10.1007/s00343-015-4044-7

IOCAS-IR > 海洋环流与波动重点实验室

	Why does the IOD-ENSO teleconnection disappear in some decades?
	Xu Tengfei 1,2,4; Yuan Dongliang1,3
	2015-03-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号	33 期号:2 页码:534-544
文章类型	Article
摘要	Lag correlations between sea surface temperature anomalies (SSTA) in the southeastern tropical Indian Ocean (STIO) in fall and Nio 3.4 SSTA in the eastern equatorial Pacific in the following fall are subjected to decadal variation, with positive correlations during some decades and negative correlations during others. Negative correlations are smaller and of shorter duration than positive correlations. Variations in lag correlations suggest that the use of the Indian Ocean Dipole (IOD) as a predictor of the El Nio-Southern Oscillation (ENSO) at a lead time of one year is not effective during some decades. In this study, lag correlations between IOD and ENSO anomalies were analyzed to investigate why the IOD-ENSO teleconnection disappears during decades with negative correlations. Anomalies induced by the IOD in the equatorial Pacific Ocean during decades with negative correlations are still present, but at a greater depth than in decades with positive correlations, resulting in a lack of response to oceanic channel dynamics in the cold tongue SSTA. Lag correlations between oceanic anomalies in the west Pacific warm pool in fall and the equatorial Pacific cold tongue with a one-year time lag are significantly positive during decades with negative correlations. These results suggest that oceanic channel dynamics are overwhelmed by ocean-atmosphere coupling over the equatorial Pacific Ocean during decades with negative correlations. Therefore, the Indonesian throughflow is not effective as a link between IOD signals and the equatorial Pacific ENSO.
关键词	Indian Ocean Dipole (Iod) El Nino-southern Oscillation (Enso) Oceanic Channel Teleconnection
DOI	10.1007/s00343-015-4044-7
收录类别	SCI
语种	英语
WOS记录号	WOS:000351156800027
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/25434
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266003, Peoples R China 4.State Ocean Adm, Inst Oceanog 1, Qingdao 266061, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Xu Tengfei,Yuan Dongliang. Why does the IOD-ENSO teleconnection disappear in some decades?[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2015,33(2):534-544.
APA	Xu Tengfei,&Yuan Dongliang.(2015).Why does the IOD-ENSO teleconnection disappear in some decades?.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,33(2),534-544.
MLA	Xu Tengfei,et al."Why does the IOD-ENSO teleconnection disappear in some decades?".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 33.2(2015):534-544.

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