Southern Oscillation
noun
climatology
: a periodic seesaw fluctuation in sea-level atmospheric pressures over the southern Pacific and Indian oceans that is believed to be linked to El Niño and La Niña events compare arctic oscillation, north atlantic oscillation
Examples of Southern Oscillation in a Sentence
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The most influential one that forecasters look at is the El Nino-Southern Oscillation (ENSO).
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Kyle Reiman, ABC News, 26 Aug. 2025
What To Know La Niña is the cool phase of a natural, recurring climate cycle known as the El Niño-Southern Oscillation (ENSO).
—Joe Edwards, MSNBC Newsweek, 23 Aug. 2025
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Kyle Reiman, ABC News, 26 Aug. 2025
What To Know La Niña is the cool phase of a natural, recurring climate cycle known as the El Niño-Southern Oscillation (ENSO).
—Joe Edwards, MSNBC Newsweek, 23 Aug. 2025
Cite this Entry
“Southern Oscillation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Southern%20Oscillation. Accessed 5 Sep. 2025.
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