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Arctic air

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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 mass
mass of very cold air in the arctic regions which invades lower latitudes at irregular intervals.
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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—An air mass with characteristics developed mostly in winter over Arctic surfaces of ice and snow. Arctic air extends to great heights, and the surface temperatures are basically, but not always, lower than those of polar air.

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 - 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 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.

If cold air is pushing in from the Arctic, displacing the warm air, then the leading edge of the Arctic air mass is called a cold front.

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.
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A type of fog that forms when an outbreak of cold Arctic air settles over an expanse of open, relatively warmer water (See sea smoke, arctic sea smoke and advection fog, or sea fog)
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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.

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, ...

This phenomenon is particularly common over large lakes such as the Great Lakes in autumn and early winter because the lakes cool much slower than adjacent land areas. The cumulus clouds that form in cold Arctic air as it traverses a much warmer ...

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, ...

Note that in daily weather forecasting, a 1-day forecast could sometimes be assigned with such certainty (at least when rounded to multiples of 5), such as a 100% probability of below-normal temperature in an arctic air mass that is expected to ...

See also: See also: Arctic, Air, Air mass, Temperature, Water

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