Dark blue cloudy sky

What is Arctic Air?

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

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Glossary

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A narrow band of strong winds in the upper atmosphere, typically flowing from west to east and influencing weather patterns.

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

Snow that rises to 8 feet or higher.