Wiktionary
n. (context physics meteorology English) The semipermanent, semicontinuous front between the deep, cold arctic air and the shallower, basically less cold polar air of northern latitudes; generally comparable to the antarctic front of the southern hemisphere.
Wikipedia
The Arctic front is the semipermanent, semi-continuous weather front between the cold arctic air mass and the warmer air of the polar cell. It can also be defined as the southern boundary of the Arctic air mass. Mesoscale cyclones known as Polar lows can form along the arctic front in the wake of extratropical cyclones. Arctic air masses in their wake are shallow with a deep layer of stable air above the shallow cold cool.
Usage examples of "arctic front".
The first blow -- though it cannot have meant too much to Maria -- was the death on the Arctic front of my half brother, Stephan Bronski, or Ehlers, if you will, for by then he had taken his stepfather's name.
Warmth was not a word one associated with Hightons, yet he seemed to have it, even if he did pretend an arctic front in public.