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 condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

An instrument for measuring atmospheric pressure.

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

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

Temperature scale, abbreviated as °C, found by accepting the freezing point of water at one atmospheric pressure as zero...