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Understanding the Impacts of the Indian Ocean on ENSO Variability in a Coupled GCM
- Article from:
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Journal of Climate
- Article date:
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October 1, 2004
- Author:
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Copyright informationCopyright American Meteorological Society Oct 2004. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
This study investigates the impacts of the Indian Ocean on El Niño-Southern Oscillation (ENSO) variability through numerical simulations with a coupled atmosphere-ocean general circulation model, composite analyses with the coupled model output, and simple atmosphere model experiments with specified sea surface temperature (SST) forcing. It is found that, when the Indian Ocean is decoupled from the atmosphere, the ENSO variability in the coupled model is significantly reduced. Conditional SST distributions indicate that the warm (cold) ENSO state is stronger and occurs more frequently when the Indian Ocean SST in summer is relatively cold (warm), whereas it is weaker and occurs ...