air mass

air mass
noun Date: 1882 a body of air extending hundreds or thousands of miles horizontally and sometimes as high as the stratosphere and maintaining as it travels nearly uniform conditions of temperature and humidity at any given level

New Collegiate Dictionary. 2001.

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  • air mass — air′ mass n. mer a body of air covering a wide area, exhibiting approximately uniform properties through any horizontal section • Etymology: 1890–95 …   From formal English to slang

  • air mass — n. Meteorol. a huge, uniform body of air having the properties of its place of origin: see POLAR CONTINENTAL, POLAR MARITIME, TROPICAL CONTINENTAL, TROPICAL MARITIME …   English World dictionary

  • Air mass — For other uses, see Air mass (astronomy) and Air mass (solar energy). Different air masses which affect North America, as well as othe …   Wikipedia

  • air mass — a body of air covering a relatively wide area, exhibiting approximately uniform properties through any horizontal section. [1890 95] * * * In meteorology, a large body of air having nearly uniform conditions of temperature and humidity at any… …   Universalium

  • air mass — noun a large body of air with uniform characteristics horizontally • Hypernyms: ↑atmosphere, ↑atmospheric state • Hyponyms: ↑high, ↑low, ↑depression * * * noun : a body of air extending hundreds or thousands of miles horizontally and someti …   Useful english dictionary

  • air mass — /ˈɛə mæs / (say air mas) noun a large body of air, up to thousands of kilometres in extent, of uniform temperature and humidity, and impacting on an adjacent air mass at a well defined front; classified according to temperature as Arctic,… …  

  • air mass —    a unit used in astronomy in measuring the absorption of light from the stars by the atmosphere. One air mass is the amount of absorption of light from a star directly overhead (at the zenith). The absorption of light from other stars is… …   Dictionary of units of measurement

  • Air-mass thunderstorm — An Air mass thunderstorm, also called a garden variety thunderstorm, is a thunderstorm that is generally weak and usually not severe. These storms form in environments with low Convective Available Potential Energy (CAPE) values, low wind shear,… …   Wikipedia

  • Air mass coefficient — The air mass coefficient characterizes the solar spectrum after the solar radiation has traveled through the atmosphere. For a thickness l o of the atmosphere, the path length l through the atmosphere for solar radiation incident at angle θ… …   Wikipedia

  • air mass classification — noun a) Meteorology. a system used to identify and to characterize the different air masses according to a basic scheme. A number of systems have been proposed, but the Bergeron classification has been the most widely accepted. In this system,… …   Wiktionary

  • air mass weather — noun : weather within an air mass in distinction from that occurring at its front …   Useful english dictionary

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