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Resonance in bidecadal and pentadecadal climate oscillations over the North Pacific : Role in climatic regime shifts

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Title: Resonance in bidecadal and pentadecadal climate oscillations over the North Pacific : Role in climatic regime shifts
Authors: Minobe, Shoshiro Browse this author →KAKEN DB
Issue Date: 1-Apr-1999
Publisher: American Geophysical Union
Journal Title: Geophysical Research Letters
Volume: 26
Issue: 7
Start Page: 855
End Page: 858
Publisher DOI: 10.1029/1999GL900119
Abstract: The roles of interdecadal oscillations in climatic regime shifts, which are observed as rapid strength changes in the Aleutian low in winter and spring seasons, have been analyzed. A regime shift results from simultaneous phase reversals between pentadecadal and bidecadal variations, which synchronize with one another at a relative period of three. The pentadecadal variation, which is observed in both winter and spring seasons, provides the basic timescale of regime shifts, while the bidecadal variation, which is observed only in winter, characterizes the rapidity of the shifts. A Monte-Carlo simulation has shown that the simultaneous phase reversals or resonance between the pentadecadal and bidecadal variations reflect a physical linkage between them and do not coincide accidentally. The role of this synchronization feature for assessing and predicting regime shifts is discussed.
Rights: An edited version of this paper was published by AGU. Copyright 1999 American Geophysical Union.
Type: article (author version)
URI: http://hdl.handle.net/2115/21813
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 見延 庄士郎

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