Dark blue cloudy sky

What is Relative Humidity?

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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Glossary

The branch of science dealing with the laws of motion of air or other gases.

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

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

Cloud condensation nuclei are tiny particles in the atmosphere, such as dust, salt, or pollutants, that provide surfaces...

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

The upward movement of air caused by a topographic barrier, such as a mountain, which can lead to cloud formation and precipitation.

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

A sudden and rapid flow of snow masses accumulated on the slopes of mountainous areas under the influence of gravity or a...

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