Dark blue cloudy sky

What is Atmosphere?

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

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Glossary

Jet streams are strong, fast-flowing air currents in the upper levels of the atmosphere. They form when warm air masses meet...

A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...

An elongated area of relatively low atmospheric pressure, often associated with unsettled weather conditions like storms...

Perhaps you have come across them, maybe you are seeing them for the first time. These clouds, known as wave clouds, resemble...

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

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

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

A small, intense downdraft that produces damaging winds at the surface, typically lasting a few minutes and often associated...

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

A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...