Dark blue cloudy sky

What is Atmosphere?

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

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Glossary

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

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

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

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

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

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

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