What is El Nino?

El Nino, which in Spanish means child, is a freak weather pattern occuring in the Pacific Ocean. It is well known that oceans have huge heat storage capacity, which makes them one of the most important factors affecting global climate. Every change in ocean temperature will have a certain influence on weather patterns in adjacent land masses. When El nino occurs such an interaction between ocean and atmosphere appears, proving theory that these two are highly dependent on each other.