This is a picture explaining the basic mechanic behind El Nino. It is a set of air and ocean currents located in the Eastern Pacific that affects global climate.It is a difficult event to predict and explain due to the uncertainty of climatic change. The following links are to pages that explain the phenomena in detail.
This diagram explains the difference between El Nino years and normal years.
This page contains many pictures and diagrams explaining ENSO.
This page explains how scientists observe ENSO. It shows new advances in the thoery and modelling behind ENSO, explaining the physics and irregularities of the Southern Oscillation.
