北ほっ極きょく振しん動どう

noun

Arctic oscillation

A climate pattern characterized by pressure differences between the Arctic and mid-latitudes. Used in meteorology and climate science.

• 北ほっ極きょく振しん動どうが負ふの時とき、日本にほんは寒かん冬とうになりやすい。

  When the Arctic oscillation is negative, Japan tends to have cold winters.