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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

The heating of the Earth by the sun causes daily changes in both the direction and speed of the wind. During the day, ground...

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

Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...

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

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

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

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

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...

The amount of water vapor present in the air, which can affect comfort levels and weather conditions.