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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

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

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

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

The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

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

A mass of very cold, dry air that mostly originates over the Arctic Ocean.

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

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

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