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

Local winds that blow from slopes to peaks as a result of the heating of the top slopes without being affected by general...

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

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.

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

Ice forms on the surface of highways in a very thin layer that is difficult to distinguish from the color of the asphalt...

Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

A cold core high is a high-pressure system with cold air at its center. These systems are typically associated with clear...

A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.