North Atlantic Oscillation (“NAO”)
Oscillation Nord Atlantique ("NAO")" />
Measure of the strength of the westerlies across the North Atlantic. Originally defined by Sir Gilbert Walker in 1932 as the difference in pressure between Ponta Delgada on the Azores and Stykkisholmur in Iceland. More information on the NAO can be found here. See also Arctic Oscillation (“AO”).
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