Evidence for active El Nino Southern Oscillation variability in the Late Miocene greenhouse climate

@article{Galeotti2010EvidenceFA,
  title={Evidence for active El Nino Southern Oscillation variability in the Late Miocene greenhouse climate},
  author={Simone Galeotti and Anna von der Heydt and Matthew Huber and David Martin Bice and Henk A. Dijkstra and Tom Jilbert and Luca Lanci and Gert‐Jan Reichart},
  journal={Geology},
  year={2010},
  volume={38},
  pages={419-422}
}
An evaporite varve thickness record from the Late Miocene Mediterranean reveals significant signals of interannual variability, the frequency and persistence of which are compared with climatic oscillations affecting the region today. Sustained variability in the 2–7 yr band resembles the modern spectrum of the El Nino Southern Oscillation (ENSO) and contrasts with that of the North Atlantic Oscillation (NAO), the cyclicity of which is less stationary in frequency and less sustained in duration… 

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