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

The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...

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

Particles such as pollen, grass seeds, or dust in the air that cause allergies and are transported by winds.

The decrease in temperature with height in an adiabatically rising air parcel (lapse rate). For dry air, this value is 1...

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

Large, fluffy white clouds with flat bases, typically indicating fair weather, though they can develop into storm clouds...

Meteorology is the scientific study of the atmosphere and weather processes. It involves observing, analyzing, and forecasting...

A weather system refers to the movement of warm and cold air across the globe, usually in a recurring pattern. Systems can...

A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.