Recent trends in the seasonal and temporal behaviour of the El Niño–Southern Oscillation

  title={Recent trends in the seasonal and temporal behaviour of the El Ni{\~n}o–Southern Oscillation},
  author={Neville Nicholls},
  journal={Geophysical Research Letters},
  • N. Nicholls
  • Published 1 October 2008
  • Environmental Science
  • Geophysical Research Letters
Trends in the seasonal and temporal behaviour of the El Niño–Southern Oscillation over the period 1958–2007 have been assessed using two indices of the phenomenon, NINO3.4 and a non‐standardised Southern Oscillation Index (SOI). There is no evidence of trends in the variability or the persistence of the indices, nor in their seasonal patterns. There is a trend towards what might be considered more “El Niño‐like” behaviour in the SOI (and more weakly in NINO3.4), but only through the period… 

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