Arctic Oscillation (AO), 北極振盪

How the Arctic Oscillation Influences Wisconsin Weather | Greendale Weather
http://arcturan.com/how-the-arctic-oscillation-influences-wisconsin-weather/

Left: Effects of the Positive Phase of the Arctic Oscillation. Right:Effects of the Negative Phase of the Arctic Oscillation. —Credit: J. Wallace, University of Washington.
All About Arctic Climatology and Meteorology | Patterns in Arctic Weather and Climate | National Snow and Ice Data Center
https://nsidc.org/cryosphere/arctic-meteorology/weather_climate_patterns.html
Arctic oscillation - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Arctic_oscillation
北極振盪
台灣凍僵了！2分鐘動畫認識「北極振盪」
「負北極振盪」

所謂的北極振盪(Arctic Oscillation，簡稱AO)是指北半球