北ほっ極きょく気き団だん

noun

Arctic air mass

Technical term in meteorology referring to a cold air mass originating in the Arctic region.

• 北ほっ極きょく気き団だんの南なん下かにより、日本にほん列れっ島とうは厳きびしい寒かん波ぱに見み舞まわれた。

  Due to the southward movement of an Arctic air mass, the Japanese archipelago was hit by a severe cold wave.