bomb cyclone 炸彈氣旋

bomb cyclone
繁：炸彈氣旋
简：炸弹气旋

北美洲東部接連受「炸彈氣旋」（bomb cyclone）及極地寒流吹襲，加拿大及美國東岸部分地區錄得破紀錄低溫，估計多達1億人受影響；位於南半球的澳洲則面臨熱浪（見另稿）。專家警告全球暖化令阻擋極地冷空氣的屏障失效，異常嚴寒冬季未來可能成新常態。

暖化掀極端天氣 北冷南熱破紀錄 美加東部低溫 1億人受影響（2018年1月8日）。明報，取自 https://news.mingpao.com/pns/dailynews/web_tc/article/20180108/s00014/1515348576579

What makes a storm a “bomb” is how fast the atmospheric pressure falls; falling atmospheric pressure is a characteristic of all storms. By definition, the barometric pressure must drop by at least 24 millibars in 24 hours for a storm to be called a bomb cyclone; the formation of such a storm is called bombogenesis.

What Is a ‘Bomb Cyclone,’ or Bombogenesis?. (2018, January 3). The New York Times. Retrieved from https://www.nytimes.com/2018/01/03/us/what-is-a-bomb-cyclone.html