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What is Precipitation?

Any form of water - liquid or solid - that falls from the atmosphere to the Earth's surface, including rain, snow, sleet, and hail.

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Glossary

The term 'cloudy' refers to weather conditions characterized by a significant amount of cloud cover in the sky. This may...

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

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

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

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....