Mechanisms for ENSO Phase Change in a Coupled GCM

  title={Mechanisms for ENSO Phase Change in a Coupled GCM},
  author={Eric Guilyardi},
The mechanisms leading to El Niño onset and termination in the ECHAM4/OPA coupled GCM are assessed and compared to observations and existing ENSO paradigms. At the equator as well as off equator, the patterns and timing of modeled El Niño composites are in good agreement with those observed. Heat content of the west Pacific is confirmed as a precursor to ENSO phase change, and the present work emphasizes the role of its northern off-equator part [west North Pacific (WNP) region, 58–158N, 1208… CONTINUE READING
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