Arctic air mass Mass of very cold air in the Arctic regions which invades lower latitudes at irregular intervals.
arctic air"A type of air mass with characteristics developed mostly in winter over arctic surfaces of ice and snow. Arctic air is cold aloft and extends to great heights, but the surface temperatures are often higher than those of polar air.
Arctic Air (A):
Continental arctic (cA): Extremely cold temperatures and very little moisture.
Arctic Air- a mass of very cold, dry air that usually originates over the Arctic Ocean north of Canada and Alaska.
Arctic High- a very cold high pressure that originates over the Arctic Ocean.
Arctic air A very cold and dry air mass that forms primarily in winter and the northern interior of North America.
Arctic Air
Mass of air in the Arctic Regions, very cold in the lower levels, which invades lower latitudes at irregular intervals.
ARCTIC AIR MASS
An air mass that develops around the Arctic, it is characterized by being cold from surface to great heights. The boundary of this air mass is often defined by the Arctic front, a semi-permanent, semi-continuous feature.
Arctic air masses are typically very shallow and have been known to produce devastating ice storms. Behind a cold front, the air mass is maritime polar (mP), but behind an Arctic front, the air mass is continental polar (cP).
Arctic Air Mass
A Index
A daily index of geomagnetic activity derived as the average of the eight 3-hourly a indices.
Arctic Air Mass
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Air mass, AMS, C AMS, K AMS, WDLY
AAWU - permalink - collapse ...
Arctic Air masses form over the Arctic regions of Siberia, Greenland and North America, at about 60 degs. N. Lat. These air masses are very cold and dry, and bring very cold air over the United States as far south as the Gulf of Mexico and Florida.
Arctic Air - An air mass that originates over Canada and brings us cold temperatures.
Arctic Air- A mass of very dry, very cold air that develops over the snow-and-ice-covered regions of the Far North.
Atmosphere- The mass of air surrounding the Earth.
Antarctic Air: Mass of air originating in the Antarctic Continent. It is cold and dry in all seasons of the year.
As cold, arctic air moves down and over the United States from the colder northern regions, large bodies of water are generally warmer than the air moving over them.
Continental arctic air mass - very cold dry air. Siberia.
Air mass thunderstorm - a garden variety storm which causes little if any damage. It occurs a considerable distance from any front.
Continental Arctic Air Mass - an air mass characterized by extremely cold, dry air
Continental Polar Air Mass - an air mass characterized by cold, dry air
Continental Tropical Air Mass - an air mass characterized by warm or hot dry air ...
Continental arctic air mass An air mass characterized by extremely low temperatures and very dry air.
Continental polar air mass An air mass characterized by low temperatures and dry air. Not as cold as arctic air masses.
It moves quickly across the northern United States, often bring gusty winds and cold Arctic air. ALEUTIAN LOW A semi-permanent, subpolar area of low pressure located in the Gulf of Alaska near the Aleutian Islands.
In the northern winter, high-pressure systems (called Canadian highs or arctic air masses) often migrate to midlatitude regions such as the North American upper Midwest, New England, and northern Europe.
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.
Outflow Winds - Winds that blow down fjords and inlets from the land to the sea. When cold arctic air flows from the interior of BC onto the coast, the windspeeds through mainland inlets can reach over 100 km/h.
A small whirling storm over water which can either be spawned from the base of a thunderstorm, or formed in a cold outbreak of Arctic air. They are similar, but generally no as severe as tornadoes.
Wave Direction ...
Ice Fog - Fog composed of ice crystals instead of water droplets. Ice fog forms when clear and calm conditions prevail in extremely cold arctic air.
COLD HIGH A high pressure system that has its coldest temperatures at or near the center of circulation, and horizontally, is thermally barotropic. It is shallow in nature, as circulation decreases with height. Associated with cold Arctic air, ...
Not as severe as frostbite, this distress is primarily the result of the contraction in the blood vessels near the surface of the skin. The medical term used for this condition is "acrocyanosis." Perhaps in reaction to the arctic air mass this week, ...
 See also: Arctic, Air, Air mass, High, Temperature
  
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