ENSO dynamics: low-dimensional-chaotic or stochastic?
Atmospheric and Oceanic Physics
2015-06-05 v1
Abstract
We apply a test for low-dimensional, deterministic dynamics to the Nino 3 time series for the El Nino Southern Oscillation (ENSO). The test is negative, indicating that the dynamics is high-dimensional/stochastic. However, application of stochastic forcing to a time-delay equation for equatorial-wave dynamics can reproduce this stochastic dynamics and other important aspects of ENSO. Without such stochastic forcing this model yields low-dimensional, deterministic dynamics, hence these results emphasize the importance of the stochastic nature of the atmosphere-ocean interaction in low-dimensional models of ENSO.
Cite
@article{arxiv.1206.5657,
title = {ENSO dynamics: low-dimensional-chaotic or stochastic?},
author = {Tatjana Zivkovic and Kristoffer Rypdal},
journal= {arXiv preprint arXiv:1206.5657},
year = {2015}
}