- polar front
- A semipermanent and semicontinuous front separating air masses of tropical and polar origin.Typical polar front depression in the Southern Hemisphere.
Aviation dictionary. 2014.
Look at other dictionaries:
polar front — n. Meteorol. the boundary or transition region between the cold air of a polar region and the warmer air of the middle or tropical regions … English World dictionary
Polar front — In meteorology, the polar front is the boundary between the polar cell and the Ferrel cell in each hemisphere. At this boundary a sharp gradient in temperature occurs between these two air masses, each at very different temperatures.The polar… … Wikipedia
polar front — noun the front of an advancing mass of colder air • Syn: ↑cold front • Hypernyms: ↑front • Hyponyms: ↑squall line * * * noun : the boundary between the cold air of a polar region and the warmer air o … Useful english dictionary
polar front — po′lar front n. mer the variable frontal zone of middle latitudes separating air masses of polar and tropical origin • Etymology: 1915–20 … From formal English to slang
polar front — noun Date: 1920 the boundary between the cold air of a polar region and the warmer air of lower latitudes … New Collegiate Dictionary
polar front — Meteorol. the variable frontal zone of middle latitudes separating air masses of polar and tropical origin. [1915 20] * * * … Universalium
polar front — /poʊlə ˈfrʌnt/ (say pohluh frunt) noun the transition region, or belt, between the cold polar easterly winds and the relatively warm south westerly winds of the middle latitudes … Australian English dictionary
Polar low — over the Barents Sea on February 27, 1987 A polar low is a small scale, long lived atmospheric low pressure system (depression) that is found over the ocean areas poleward of the main polar front in both the Northern and Southern Hemispheres. The … Wikipedia
front — /frunt/, n. 1. the foremost part or surface of anything. 2. the part or side of anything that faces forward: the front of a jacket. 3. the part or side of anything, as a building, that seems to look out or to be directed forward: He sat in the… … Universalium
polar anticyclone — ▪ meteorology wind system associated with a region in which high atmospheric pressure develops over or in the vicinity of the poles. The polar anticyclone is strongest in the cold season of the year. The Siberian anticyclone is an example… … Universalium