Dark blue cloudy sky

What is Cumulus?

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds under the right conditions.

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Glossary

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

The horizontal transport of any feature within the atmosphere due to the movement of air (wind). This includes phenomena...

The percentage of water vapor in the air relative to the maximum amount of water vapor the air can hold at a given temperature.

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

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

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...

In a severe storm, with a swirling motion in its left rear quadrant, a vertically rotating column of air, often seen with...