air mass


Also found in: Thesaurus, Acronyms, Encyclopedia, Wikipedia.

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 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.
As a strong continental cold air mass continues to surge through Taiwan, Yushan's Paiyun Lodge reporting snow beginning to fall last night at 8:19 p.
The linkage of the occurrence probability of continental-scale cold-air outbreaks to the amount of air mass transported into the polar stratosphere suggests that it is feasible to predict them 1 month in advance.
It replaces the Arctic maritime air mass which has been sitting over the UK during the last fortnight.
Weather Forecaster Zakariya al-Issa told SANA thatthe instability in the weather in the country came as a result of being affected by acold and wet polar air mass that would cause a drop in the temperatures and the fall ofthundershowers in different areas and snow on the mountains.
The meteorological office's Panayiotis Mouskos has said snowfall is likely by the end of the week or beginning of next, caused by a cold air mass coming Cyprus' way from the north.
Such is the impact of the advancing spread of the Torrid climate belt and its associated moist air mass in response to warming and the consequent change of climate patterns.
The north-west and west will have more cloud and a bit more moisture but the warm air mass is staying over Scotland.
After six weeks of uncommonly dry and moderate weather, "the coldest air mass so far this winter" is slated to arrive Saturday night from Alaska across much of the Pacific Northwest, cautions Steve Pierce, president of the Oregon chapter of the American Meteorological Society.
The security operation saw 1,400 frontline officers - one in six of all officers in the force - drafted in as more than 50,000 worshippers gathered for the open air mass on September 19.