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

A term used to identify clouds with a base height below 6,000 feet in the observer's direction. Stratiform clouds consist...

A type of low-altitude cloud that forms in uniform layers, often covering the entire sky and producing overcast conditions.

Snow that rises to 8 feet or higher.

An instrument for measuring atmospheric pressure.

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

A distinct layer in a body of water where the temperature changes rapidly with depth, separating warmer surface water from...

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

A cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus...

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