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

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

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

A very cold high pressure that originates over the Arctic Ocean.

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

The branch of science dealing with the laws of motion of air or other gases.

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

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...

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

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...