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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

The scientific study of climate, focusing on the analysis of long-term weather patterns and trends over time.

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

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

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

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

A measurement determined by the wave lengths and sea conditions caused by the effect of wind, and by the movement of tree...

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

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

The large-scale movement of air that distributes heat and moisture around the Earth, influencing weather patterns and climatic...

Nimbostratus clouds are thick, dark, gray clouds associated with rainy and gloomy days that block the Sun. These clouds,...