The polar vortex is a large area of low pressure and cold air surrounding the Earth's North and South poles.
The polar vortex is a large area of low pressure and cold air surrounding the Earth's North and South poles.
The term vortex refers to the counter-clockwise flow of air that helps keep the colder air close to the poles (left globe).
Read more at National Oceanic and Atmospheric Administration (NOAA)
Infographic via NOAA
