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June 1, 1989Journal of the Atmospheric SciencesOpen Access

Interannual Variability in a Tropical Atmosphere–Ocean Model: Influence of the Basic State, Ocean Geometry and Nonlinearity

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Authors

DBDavid S. BattistiUniversity of WashingtonAHAnthony C. HirstUniversity of Hawaiʻi at Mānoa

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Implication

Randomized trial examines interannual variability influenced by ocean geometry in coupled tropical systems, suggesting key mechanisms of oscillations.

Key Points

  • This research aims to analyze interannual variability in a tropical coupled atmosphere-ocean model under varying background states and ocean geometries.
  • Developed a range of experiments using linear and nonlinear numerical models of the coupled system.
  • Derived a simple analog model to describe the interannual variability.
  • Compared model solutions with different ocean geometries and background states.
  • The simple model accurately predicts the full linear and nonlinear numerical models' behavior.
  • Essential processes for oscillation period and growth rate are primarily linear, with nonlinearity limiting amplitude.
  • Nonlinear effects decrease the oscillation period by approximately 10% from predictions of the small amplitude regime.

Cite This Study

Battisti et al. (1989) studied this question.

synapsesocial.com/papers/6a12ec205bb7edc7189e793chttps://doi.org/10.1175/1520-0469(1989)046<1687:iviata>2.0.co;2
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