Present-day Climate

El Niño-Southern Oscillation

El Niño-Southern Oscillation (ENSO) is the dominant mode of inter-annual climate variability in the present-day climate system, occurring in the tropical Pacific. It is an oscillation with a period of two to seven years between warm (“El Niño”) and cold (“La Niña”) sea surface temperatures (SSTs) in the eastern tropical pacific, and corresponding changes in surface air pressure known as the Southern Oscillation. →

The APDRC may be acknowledged as follows: Data provided by Asia-Pacific Data Research Center,
which is a part of the International Pacific Research Center at the University of Hawaiʻi at Mānoa,
funded in part by the National Oceanic and Atmospheric Administration (NOAA).

©2008 International Pacific Research Center

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Last Modified on May 18, 2012