noun
cold vortex; cold-core low
Meteorological term for a low-pressure system with a cold core, often associated with unstable weather.
寒冷渦の影響で、大気の状態が不安定になっている。
Due to the cold vortex, atmospheric conditions are unstable.
低気圧 is a general low-pressure system, while 寒冷渦 specifically refers to a cold-core low-pressure vortex.
Compound of 寒冷 (cold) and 渦 (vortex, whirlpool), directly describing a cold rotating air mass.