cold anticyclone

A polar anticyclone is a wind system characterized by high atmospheric pressure that develops near the poles, particularly during the cold season. These systems form as surface air cools, becoming denser and causing an inflow of air at higher levels, which increases the air mass above the surface.1

The weather within a polar anticyclone is typically clear and cold. These anticyclones can migrate, bringing cold waves to warmer latitudes in winter and cool, dry weather in summer. They are distinct from cyclones, which are regions of low pressure, and are generally associated with stable, dry air and persistent downward motion. While often bringing fair weather, anticyclones can also lead to stagnant air, potentially trapping pollution, and in winter, can contribute to fog formation.12