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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 cold core low is a low-pressure system where the coldest temperatures are found near the center. These systems are often...

A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.

The formation of fog when warm and moist air passes over a cool or cold surface or, conversely, when cold air passes over...

The term used for semi-stationary high-pressure centers such as the Azores and North Pacific Highs, which occur in the narrow...

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

A thermodynamic change process in the system without any exchange of heat or transfer of energy between systems. This process...

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

Observation of the sky from the observer's location where there are no clouds, and there is no obstruction to visibility....

A large body of air having similar horizontal temperature and moisture characteristics.

Occurs when centers of high pressure and/or low pressure set up over a region in such a way that they prevent other weather...