What is Arctic Air?

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

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Conduction is the transfer of heat or electricity through a material without the material itself moving. This occurs when...

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

Ball lightning appears during thunderstorms, taking the shape of glowing, electric orbs in the sky. It can appear in a variety...

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

A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

An instrument for measuring atmospheric pressure.

Weather is the day-to-day meteorological conditions that happen in our atmosphere. Weather can change within minutes, which...

The state of the atmosphere when it contains the maximum amount of water vapor possible at a given temperature and pressure.