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Interactions of the Tropical Indian and Atlantic Oceans on ENSO and the Influence on Tropical Teleconnections

PI: Dietmar Dommenget
Institution: University of Kiel
Abstract:
In our studies we like to analysis the interactions of the tropical Indian and Atlantic Oceans on ENSO and the influence of the two oceans on tropical teleconnections. In our simulations we find that the tropical Indian and/or Atlantic Oceans SST anomalies substantially influence the coupling over the equatorial Pacific. In the absence of SST variability in the tropical Indian and/or Atlantic Ocean, the main ENSO period is shifted by almost one year. The total SST variance in the equatorial Pacific region is reduced if either Indian or Atlantic Ocean variability is present. At the same time the atmospheric ENSO teleconnections are damped more strongly than the SST.

We like to verrify these findings with different coupled models, hoping to get a better understanding of the coupling between the three different tropical oceans.
Publications:
  • Dommenget, D. and M. Latif, 2007: Generation of Hyper Climate Modes. Geo. Res. Lett.. Accepted. Abstract. Full Article. Edit.
  • Möller, J., D. Dommenget and V. Semenov:, 2007: The Annual Peak in the SST Anomaly Spectrum. J. Climate. Accepted. Abstract. Full Article. Edit.

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