Dark blue cloudy sky

What is Alto?

A prefix used in cloud nomenclature to describe middle-altitude clouds that form between 6,500 and 20,000 feet, such as altostratus and altocumulus. These clouds are often associated with changing weather patterns.

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Glossary

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The amount of radiation, heat, or light passing through or flowing from a unit area of a surface.

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

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

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The lowest level of a given cloud or cloud layer in the atmosphere, relative to the observer's position above the ground.

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

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

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