Question

What is meant by polar vortex?

Answer 1

A polar vortex is an upper level low-pressure area lying near the Earth's poles. ... The bases of the two polar vortices are located in the middle and upper troposphere and extend into the stratosphere. Beneath that lies a large mass of cold, dense arctic air.

Answer 2

A polar vortex is an upper level low-pressure area lying near the Earth's poles. There are two polar vortices in the Earth's atmosphere, overlying the North and South Poles.