El Nino and the Delayed Action Oscillator
Authors: Ian Boutle, Richard H. S. Taylor, Rudolf A. Roemer
(Submitted on 10 Mar 2006)
Abstract: We study the dynamics of the El Nino phenomenon using the mathematical model of delayed-action oscillator (DAO). Topics such as the influence of the annual cycle, global warming, stochastic influences due to weather conditions and even off-equatorial heat-sinks can all be discussed using only modest analytical and numerical resources. Thus the DAO allows for a pedagogical introduction to the science of El Nino and La Nina while at the same time avoiding the need for large-scale computing resources normally associated with much more sophisticated coupled atmosphere-ocean general circulation models. It is an approach which is ideally suited for student projects both at high school and undergraduate level.
13 RevTeX pages, 14 .eps figures included, submitted to the American Journal of Physics
Atmospheric and Oceanic Physics (physics.ao-ph); Geophysics (physics.geo-ph)
American Journal of Physics 75, 15-24 (2007)