air mass

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Related to Maritime Air Mass: maritime polar air

air mass

n.
A large body of air with only small horizontal variations of temperature, pressure, and moisture.

air mass

n
(Physical Geography) a large body of air having characteristics of temperature, moisture, and pressure that are approximately uniform horizontally

air′ mass`


n.
a body of air covering a wide area, exhibiting approximately uniform properties through any horizontal section.
[1890–95]

air mass

A fairly uniform mass of air covering a large area and containing air of, for example, polar or tropical origin.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.air mass - a large body of air with uniform characteristics horizontally
atmospheric state, atmosphere - the weather or climate at some place; "the atmosphere was thick with fog"
high - an air mass of higher than normal pressure; "the east coast benefits from a Bermuda high"
low, depression - an air mass of lower pressure; often brings precipitation; "a low moved in over night bringing sleet and snow"
References in periodicals archive ?
"The end of January and start of February saw the coldest spell of the winter as a polar maritime air mass dominated and low pressure systems moved to the south of Ireland.
The cause of this changeable and unsettled but mild weather is down to a tropical maritime air mass moving across the British Isles from southwest of the Atlantic.
"At the moment it is called a Polar Maritime Air Mass which is coming from beyond Iceland and Greenland.
This system was expected todraw in cooler northerly airto such an extent that by Friday, the whole of the UK was "expected to be under the influence of an Arctic Maritime air mass".
Tomorrow is when the chilly turn is set to take place as a Polar maritime air mass begins effect conditions.
Low pressure in Scotland will pull in an Arctic Maritime air mass that will bring wintry showers, mainly on higher ground, but it could fall on lower ground.

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