definition of el nino
El NiÃ±o /Él ËniËnjoÊ/ (Spanish pronunciation: [el ËniÉ²o]) is the warm phase of the El NiÃ±o Southern Oscillation (commonly called ENSO) and is associated with a band of warm ocean water that develops in the central and east-central equatorial Pacific (between approximately the International Date Line and 120Â°W), including off the Pacific coast of ...