North Atlantic Oscillation
noun
climatology
: a periodic seesaw fluctuation in sea-level atmospheric pressures over the northern Atlantic Ocean that is believed to contribute to the Arctic Oscillation compare arctic oscillation, southern oscillation
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“North Atlantic Oscillation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/North%20Atlantic%20Oscillation. Accessed 6 Jul. 2026.
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