Answer:
There are several means used for El Niño detection such as satellites, moored ATLAS and PROTEUS buoys, drifting buoys, sea level analysis, and XBT's.
Step-by-step explanation:
El Niño is the warm phase of the El Niño Southern Oscillation and is associated with a band of warm ocean water that develops in the central and east-central equatorial Pacific. Since El Niño influences global weather patterns and affects human lives and ecosystems, prediction of an El Niño event is becoming increasingly important. For short term prediction (up to 1 year) of climate variations, current observations in the Tropical Pacific are vital. Numerical models are used in many places for El Niño prediction and research.