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This page is intended as a space to share thoughts about the methodology of variability comparisons
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Hill et al. (2011)
By Chris Brierley
Reference: Hill, D. J., A. Z. Csank, A. M. Dolan, and D. J. Lunt (2011), Pliocene climate variability: Northern Annular Mode in models and tree-ring data, Palaeogeography, Palaeoclimatology, Palaeoecology, 309(1-2), 118–127, doi:10.1016/j.palaeo.2011.04.003.
Summary: This paper analyses a series of HadCM3 Pliocene simulations with different boundary conditions. The impact on these on the North Atlantic and Arctic Oscillations is investigated. Then spectral analysis of tree ring records from a site in the high Arctic are compared with modern Spectra for the NAO and AO. They argue for high Rocky Mountains in Pliocene on back of this spectral analysis.
Novelty: First attempt at Data-Model Comparison on NAO variability for Pre-Pleistocene. Use comparison to infer something about boundary conditions.
Potential for Improvement: Model and Data components could be better intertwined. Spectral analysis could be more sophisticated.
Table of Modes
| || Definition || Future Change || past1000 || midHolocene || lgm || Last Interglacial || Pliocene
| ENSO|| Trenberth || Collins; Power; || ? || Emile-Geay || ? || ? || Brierley (2015)
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