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

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

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

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A mass of very cold, dry air that mostly originates over the Arctic Ocean.

The trapping of heat in the Earth's atmosphere due to greenhouse gases, such as carbon dioxide and methane, which allows...

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

The reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...

The names given to the winds blowing from the four cardinal directions (north, east, south, and west - N, E, S, W) on a compass.

Nor'easter is a meteorological event commonly observed in the Northeastern United States and typically occurs during the...

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