Evidence for El Niño–like conditions during the Pliocene

@article{Ravelo2006EvidenceFE,
  title={Evidence for El Ni{\~n}o–like conditions during the Pliocene},
  author={Ana Christina Ravelo and Petra Simonne Dekens and Matthew D. McCarthy},
  journal={Gsa Today},
  year={2006},
  volume={16},
  pages={4}
}
The modern tropical Pacific Ocean is characterized by strong east-west asymmetry in sea surface temperature and subsurface thermocline depth coupled to easterly trade winds and zonal atmospheric, or Walker, circulation. Walker circulation and the “normal” east-west asymmetry of sea surface temperature and thermocline depth break down temporarily during El Niño events. Since these temporary deviations from the “normal” tropical climate state are known to have global impacts, it is important to… 

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