DOI: 10.1175/JCLI-D-13-00105.1
Scopus记录号: 2-s2.0-84888043348
论文题名: Oscillatory climate modes in the Indian Monsoon, North Atlantic, and Tropical Pacific
作者: Feliks Y. ; Groth A. ; Robertson A.W. ; Ghil M.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 23 起始页码: 9528
结束页码: 9544
语种: 英语
Scopus关键词: Interannual variability
; North Atlantic oscillations
; Singular spectrum analysis
; Southern oscillation
; Southern oscillation index
; Spectral analysis/models/distribution
; Synchronized oscillator
; Three-way interactions
; Atmospheric pressure
; Atmospheric thermodynamics
; Circuit oscillations
; Climate change
; Dynamics
; Frequency bands
; Synchronization
; Tropics
; Oceanography
; air-sea interaction
; climatology
; eigenvalue
; monsoon
; rainfall
; regional climate
; Southern Oscillation
; teleconnection
; Atlantic Ocean
; Atlantic Ocean (North)
; Pacific Ocean
; Pacific Ocean (Equatorial)
英文摘要: This paper explores the three-way interactions between the Indian monsoon, the North Atlantic, and the tropical Pacific. Four climate records were analyzed: the monsoon rainfall in two Indian regions, the Southern Oscillation index for the tropical Pacific, and the NAO index for the North Atlantic. The individual records exhibit highly significant oscillatory modes with spectral peaks at 7-8 yr and in the quasi-biennial and quasi-quadrennial bands. The interactions between the three regions were investigated in the light of the synchronization theory of chaotic oscillators. The theory was applied here by combining multichannel singular-spectrum analysis (M-SSA) with a recently introduced varimax rotation of the M-SSA eigenvectors. A key result is that the 7-8-yr and 2.7-yr oscillatory modes in all three regions are synchronized, at least in part. The energy-ratio analysis, as well as time-lag results, suggests that the NAO plays a leading role in the 7-8-yr mode. It was found therewith that the South Asian monsoon is not slaved to forcing from the equatorial Pacific, although it does interact strongly with it. The time-lag analysis pinpointed this to be the case in particular for the quasi-biennial oscillatory modes. Overall, these results confirm that the approach of synchronized oscillators, combined with varimax-rotated M-SSA, is a powerful tool in studying teleconnections between regional climate modes and that it helps identify the mechanisms that operate in various frequency bands. This approach should be readily applicable to ocean modes of variability and to the problems of air-sea interaction as well. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51517
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric and Oceanic Sciences, Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA, United States; Geosciences Department, Laboratoire de Météorologie Dynamique, CNRS and IPSL, Ecole Normale Supérieure, Paris, France; International Research Institute for Climate and Society, Columbia University, Palisades, NY, United States
Recommended Citation:
Feliks Y.,Groth A.,Robertson A.W.,et al. Oscillatory climate modes in the Indian Monsoon, North Atlantic, and Tropical Pacific[J]. Journal of Climate,2013-01-01,26(23)