An eigen analysis of the interdecadal changes in the structure and frequency of ENSO mode

Soon Il An, Fei Fei Jin

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

The mechanisms of interdecadal changes of El Niño-Southern Oscillation (ENSO) modes are examined through an eigen analysis of a simple coupled ocean-atmosphere model. It is shown that the observed interdecadal climate shift can effectively modify the strength of two major coupled feedbacks for the ENSO mode, namely, the zonal advection and thermocline feedbacks. These modifications lead to quantitative changes of the leading coupled mode in its frequency, growth rate, and spatial pattern, which are consistent with the observation.

Original languageEnglish
Pages (from-to)2573-2576
Number of pages4
JournalGeophysical Research Letters
Volume27
Issue number16
DOIs
Publication statusPublished - 2000 Aug 15

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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