Evidence for the effect of sunspot activity on the El Nino/Southern Oscillation

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	Evidence for the effect of sunspot activity on the El Nino/Southern Oscillation
	Zhai, Qian; Zhai, Q (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Yunnan, Peoples R China.
作者部门	空间科学部
发表期刊	NEW ASTRONOMY
	2017
卷号	52 页码:2018-01-07
ISSN	1384-1076
语种	英语
关键词	Sunspot Number Enso
摘要	The El Nino No. 3 area index (5 degrees S similar to 5 degrees N, 150 degrees W similar to 90 degrees W) and yearly sunspot number (SSN) from 1408 to 1978 are used to investigate the influence of solar activity on the El Nino/Southern Oscillation (ENSO), through periodicity analysis, cross wavelet transform (XWT), cross correlation and ensemble empirical mode decomposition (EEMD) analyses. The solar activity period, the Hale period, and the Gleissberg period are determined in the El Nino index time series, but of weak statistical significance. Cross correlation analysis of the index with SSN, and that of its low-frequency components decomposed by EEMD clearly indicate that solar activity may take effect on the ENSO, and such an impact should undergo an accumulation procedure (phase delay). XWT also indicates the existence of the impact. It is found that the index is negatively correlated with SSN when SSN is large during a certain long-term interval, and positively when SSN is small. Strong El Nino is inferred to be taken place in decade(s) to come. (C) 2016 Elsevier B.V. All rights reserved.
收录类别	SCI
文献类型	期刊论文
条目标识符	http://ir.nssc.ac.cn/handle/122/6141
专题	空间科学部
通讯作者	Zhai, Q (reprint author), Chinese Acad Sci, Yunnan Observ, POB 110, Kunming 650216, Yunnan, Peoples R China.
推荐引用方式 GB/T 7714	Zhai, Qian,Zhai, Q . Evidence for the effect of sunspot activity on the El Nino/Southern Oscillation[J]. NEW ASTRONOMY,2017,52:2018-01-07.
APA	Zhai, Qian,&Zhai, Q .(2017).Evidence for the effect of sunspot activity on the El Nino/Southern Oscillation.NEW ASTRONOMY,52,2018-01-07.
MLA	Zhai, Qian,et al."Evidence for the effect of sunspot activity on the El Nino/Southern Oscillation".NEW ASTRONOMY 52(2017):2018-01-07.

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