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

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

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...

A fixed potential temperature line on adiabats, or the process of thermodynamic changes within a system without any exchange...

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

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

A tropical cyclone, also called a hurricane, is a severe tropical storm with wind speeds in excess of 74 mph. Known as a...

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

A type of cloud consisting mostly of small particles such as ice particles.