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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 long, narrow region in the atmosphere that transport water vapor, like a river in the sky.

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

A very cold high pressure that originates over the Arctic Ocean.

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

A deviation from the normal or expected value in atmospheric or climatic conditions, often used in meteorology to identify...

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.

A cloud that develops from Cirrus, completely or partially covering the sky, creating a halo effect, thin, sheet-like, milky...

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