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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

Condensation pressure deficit refers to the difference between the actual vapor pressure and the saturation vapor pressure...

An instrument that continuously records atmospheric pressure over time. It uses a barometer to measure pressure and creates...

A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...

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

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

A sudden electrostatic discharge during a thunderstorm between electrically charged regions of a cloud, between clouds, or...

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

A weather front where two air masses meet but neither is strong enough to move the other, often resulting in prolonged periods...

Anticyclones are areas of high atmospheric pressure that bring hot, dry weather in the summer and cold fronts in the winter.

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