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

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

A measure of how hot it feels when relative humidity is combined with the actual air temperature, often referred to as the...

A towering cloud that often reaches great altitudes and is associated with thunderstorms, heavy rain, and sometimes severe...

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 cloud consisting mostly of small particles such as ice particles.

A rapidly rotating column of air extending from a thunderstorm to the ground, capable of causing significant damage.

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

The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...

An instrument for measuring atmospheric pressure.

Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...