Dark blue cloudy sky

What is La Niña?

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global weather patterns such as reduced rainfall in some areas and increased rainfall in others.

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Glossary

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

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

A body that has the property of absorbing all electromagnetic radiation falling on it, and therefore is the theoretical body...

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

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

Frozen drizzle is a dangerous type of frozen rain. It’s a light rain that falls in very fine drops, which freezes on contact...

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

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

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

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