What is Arctic Air?
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
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An instrument used to measure the speed, force, and sometimes the direction of the wind. It can be cup or pressure tube anemometers....
Air laden with sand and dust, common in areas devoid of permanent vegetation, especially deserts.
A scale for estimating wind speed based on observed conditions of the sea or land. It ranges from 0 (calm) to 12 (hurricane)...
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
A long, narrow region in the atmosphere that transport water vapor, like a river in the sky.
An instrument for measuring atmospheric pressure.
A bomb cyclone is a large mid-latitude storm that forms when a storm’s central pressure drops (i.e. “bombs out”), resulting...
The jet stream forming the boundary between tropical air and sub-tropical air, characterized by isothermal compression and...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
Considerable cloudiness refers to weather conditions where a large portion of the sky is covered with clouds, but some clear...