a large, fast fall in air pressure that leads to the forming of a bomb cyclone (= a severe storm that develops very fast)

Bombogenesis describes a cyclone that rapidly intensifies. 爆发性旋生描述的是气旋迅速加强的现象。

Fourteen of 20 hurricane-force wind events underwent bombogenesis in the North Atlantic during the first two months of this year. 今年头两个月，在北大西洋的20个飓风事件中，有14个经历了爆发性旋生。