What is Arctic Air?
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
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A low-pressure area with converging winds, rotating counterclockwise in the Northern Hemisphere and clockwise in the Southern...
An instrument for measuring atmospheric pressure.
Precipitation in the form of small balls or lumps of ice that form in thunderstorm updrafts and fall to the ground.
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 reflectance rate of a surface, indicating the amount of electromagnetic radiation reflected from the surface. It depends...
A line on a weather map connecting points of equal atmospheric pressure, used to identify high and low-pressure systems.
A drainage wind that flows downhill due to gravity, often associated with cold air descending from elevated regions.
The branch of science dealing with the laws of motion of air or other gases.
Thermodynamic changes occurring within a system without any exchange of heat with the surroundings. In the atmosphere, changes...
An image on the weather radar that is convex to the direction of movement and resembles an arc shape, caused by mesoscale...