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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

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

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

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

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

The situation where there is no advection because the constant pressure surfaces and temperature surfaces in the atmosphere...

A closed low, also known as a cut-off low, is a low-pressure system that is entirely isolated from the main atmospheric circulation...

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

The process by which a solid changes directly into a gas without first becoming a liquid, such as ice turning into water...

The expected rate of temperature decrease in an adiabatically rising air parcel when there is no heat exchange with the environment....

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