期刊
CLIMATE DYNAMICS
卷 33, 期 7-8, 页码 1069-1074出版社
SPRINGER
DOI: 10.1007/s00382-008-0469-4
关键词
ENSO; Climate variability; Chaos; Bifurcation
A thorough analysis of a proxy El Nino/Southern Oscillation (ENSO) record indicates that a bifurcation occurred in the ENSO system sometime around 5,000 years B. P. As a result of this bifurcation the attractor became higher dimensional and a new mechanism of instability was introduced. As a consequence of these changes the system switched from a dynamics where the normal condition (La Nina) was dominant to a dynamics characterized by more frequent and stronger El Nino events.
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