polar front


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Related to polar front: Polar high, Polar easterlies

polar front

n.
The region or boundary separating air masses of polar origin from those of tropical or subtropical origin.

polar front

n
(Physical Geography) meteorol a front dividing cold polar air from warmer temperate or tropical air

po′lar front`


n.
the variable frontal zone of middle latitudes separating air masses of polar and tropical origin.
[1915–20]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polar front - the front of an advancing mass of colder airpolar front - the front of an advancing mass of colder air
front - (meteorology) the atmospheric phenomenon created at the boundary between two different air masses
squall line - a cold front along which squalls or thunderstorms are likely
References in periodicals archive ?
It is likely the polar front could be as far south as it was in 2012, although current projections are for warmer summers by the end of the century.
This complexity was to be found from south of the Cape (35oSe) down to the periphery of the major polar front activity at 45oSe, covering the entire southern Africa up to Madagascar.
And research on other marine species has suggested that the Antarctic circumpolar current and the polar front can block some invaders from moving in.
Officially the lowest temperature there was a spine-chilling 13C but once, when a polar front hit a highland area, temperatures dropped to 1C.