What is Arctic Air?
A mass of very cold, dry air that mostly originates over the Arctic Ocean.
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A periodic cooling of sea surface temperatures in the central and eastern Pacific Ocean, often leading to altered global...
An instrument for measuring atmospheric pressure.
A cold front is the leading edge of a cold air mass that replaces a warmer air mass. It is typically associated with sudden...
A weather warning means that a weather hazard is occurring, imminent, or likely. In other words, severe weather is happening...
The occurrence of storms resulting from the horizontal advection of cold air at high levels or the horizontal advection of...
The measure of the water vapor or moisture content in the air, expressed as the mass of water vapor per unit volume of air....
Confluence refers to the area where two or more air streams or bodies of water meet and combine. In meteorology, it often...
A polar vortex is a circulating mass of air in the atmosphere, typically found in polar regions. This rotating air mass occurs...
Although it is also used for light winds, it is the general name given to the daily cyclical winds that occur mostly between...
The mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.