Dark blue cloudy sky

What is Arctic High?

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

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Glossary

The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

A line of severe thunderstorms that can form along or ahead of a cold front, often producing strong winds and heavy rain.

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

A middle cloud type within the B family in the international cloud classification. These clouds consist of water droplets...

A large body of air having similar horizontal temperature and moisture characteristics.

A continental air mass is a large body of air that forms over land, characterized by dry conditions due to the lack of moisture...