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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

Weather conditions are the components that comprise the state of the atmosphere. The six main weather conditions are temperature,...

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

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

Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.

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

A condition in which the stratification of the atmosphere depends on both air temperature and pressure, and where surfaces...

The formation of ice crystals on surfaces when the temperature drops below freezing, typically overnight, causing potential...

The term used for turbulence occurring in the absence of clouds or cloud-like elements in the visible area. It is often observed...

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

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