| 释义 |
polar vortex
noun[ C ]
environment specializeduk /ˌpəoʊ.lə ˈvɔː.teks/ us /ˌpoʊ.lɚ ˈvɔːr.t̬eks/pluralpolar vorticesuk /ˌpəoʊ.lə ˈvɔː.tɪ.siːz/ us /ˌpəoʊ.lɚ ˈvɔːr.t̬e.siːz/
an area of low pressure and cold air that forms near the North or South Pole and is stronger in winter: 极地涡旋
Extremely low temperatures in the polar vortex lead to the formation of polar stratospheric clouds.极地涡旋的极低温度导致极地平流层云的形成。
There are two polar vortices in the Earth's atmosphere, one overlying each Pole.
Variations in the strength of the polar vortex in the upper stratosphere may influence surface climate.
This year the winter polar vortices have been particularly persistent in the Arctic.
Lower pressure leads to the contraction of the polar vortex, which moves the frontal systems further south.
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