Are historical records sufficient to constrain ENSO simulations?

@article{Wittenberg2009AreHR,
  title={Are historical records sufficient to constrain ENSO simulations?},
  author={Andrew T. Wittenberg},
  journal={Geophysical Research Letters},
  year={2009},
  volume={36}
}
  • A. Wittenberg
  • Published 1 June 2009
  • Environmental Science
  • Geophysical Research Letters
A control simulation of the GFDL CM2.1 global coupled GCM, run for 2000 years with its atmospheric composition, solar irradiance, and land cover held fixed at 1860 values, exhibits strong interdecadal and intercentennial modulation of its ENSO behavior. To the extent that such modulation is realistic, it could attach large uncertainties to ENSO metrics diagnosed from centennial and shorter records – with important implications for historical and paleo records, climate projections, and model… 
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Information about climate and how it responds to increased greenhouse gas concentrations depends heavily on insight gained from numerical simulations by coupled climate models. The confidence placed
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