Tsallis’ statistics in the variability of El Niño/Southern Oscillation during the Holocene epoch

Analysis of the Tsallis q -triplet for the variability of El Niño Southern Oscillation (ENSO) index during the Holocene epoch (last 11,000 years) is presented. Three periods are analyzed, 0–7000, 7000–9700, 9700–11,000 years before the present. During the first and the third periods, the q -index values have the expected usual relations between them ( q s e n s < 1 < q s t a t < q r e l ), and in the second one there is an inversion between q s t a t and q r e l ( q s t a t > q r e l ).