Arctic front (1) The semipermanent, semi-continuous front between the deep, cold arctic air and the shallower, basically less cold polar air of northern latitudes. (2) South boundary of the Arctic air mass.
Arctic Front - The boundary or front separating deep, cold arctic air from shallower, relatively less cold polar air. The overrunning of air above this boundary often provides a mechanism for lift.
Arctic Front
Front which separates cold Arctic air originating at high northern latitudes from relatively warm polar air.
Atmosphere
Gaseous envelope which surrounds the Earth.
Arctic front—The surface of discontinuity between very cold (Arctic) air flowing directly from the Arctic region and another less cold and, consequently, less dense air mass.
astronomical twilight—See twilight.
Arctic front
The leading edge of very cold air moving out from Polar Regions.
Arctic Sea Smoke ...
Arctic front - divides cold air from extremely cold air.
Frozen precipitation
Diamond dust - fine powdery ice crystals that fall in extremely cold weather, even without clouds.
Antarctic Front: Front that develops and persists around the Antarctic Continent, approximately between latitudes 60º and 65ºS, and separates the Antarctic Air Mass from the Maritime Polar Air Mass (Pm) further to the north.
The Arctic front that swooped down from Canada several days ago has blown itself out and temperatures started to climb yesterday as Lehigh Valley residents ventured outside to face ''normal winter temperatures.'' Cars even started.
Behind a cold front, the air mass is maritime polar (mP), but behind an Arctic front, the air mass is continental polar (cP).
The boundary of this air mass is often defined by the Arctic front, a semi-permanent, semi-continuous feature. When this air mass moves from its source region, it may become more shallow in height as it spreads southward.
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Arctic front, Cold front, Dew Point Front, Dynamic Lifting, FNT, Front, LTL, Polar Front, Stationary Front, STNRY ...
side of the frontal zone); and 3) surface front, the line of intersection of a frontal surface or frontal zone with the earth's surface or, less frequently, with a specified constant-pressure surface. Types of front include polar front, arctic front, ...
 See also: Arctic, Front, Air, High, Air mass
  
|
RSS
