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

A middle cloud type within the B family in the international cloud classification. These are shaded clouds that can be white...

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

The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....

A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...

Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.

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

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

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

A thick cloud of tiny water droplets suspended in the atmosphere near the Earth's surface, significantly reducing visibility.

An anvil is a cloud mostly composed of ice particles. Otherwise known as a cumulonimbus cloud, an anvil has reached the stratospheric...