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

Bright and dark rays with changing colors and contrast in the sky. These rays become visible due to the reflection of atmospheric...

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

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

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

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

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

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

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

An instrument for measuring atmospheric pressure.