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

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

A large, organized thunderstorm with a rotating updraft, often producing severe weather such as tornadoes, hail, and heavy...

Perhaps you have come across them, maybe you are seeing them for the first time. These clouds, known as wave clouds, resemble...

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

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

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet,...

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

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...