air-mass source (region)

气团源地

Atmospheric Sciences (English-Chinese) dictionary. 2014.

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  • 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 — noun a) a widespread body of air, the properties of which can be identified as: b) having been established while that air was situated over a particular region of the earths surface (airmass source region) and …   Wiktionary

  • source region —   the type of area from which an air mass originates …   Geography glossary

  • airmass source region — noun An extensive area of the earths surface over which bodies of air frequently remain for a sufficient time to acquire characteristic temperature and moisture properties imparted by that surface. Air so modified becomes identifiable as a… …   Wiktionary

  • Air conditioner — For general aspects of air conditioning, see Air conditioning. A typical home air conditioning unit. An air conditioner (often referred to as AC) is a home appliance, system, or mechanism designed to dehumidify and extract heat from an area. The… …   Wikipedia

  • Aïr — /ah ear/, n. a region in N Niger, in the Sahara: low massif and oases. ab. 30,000 sq. mi. (77,700 sq. km). Also called Asben. * * * I Mixture of gases constituting the earth s atmosphere. Some gases occur in steady concentrations. The most… …   Universalium

  • air — air1 airlike, adj. /air/, n. 1. a mixture of nitrogen, oxygen, and minute amounts of other gases that surrounds the earth and forms its atmosphere. 2. a stir in the atmosphere; a light breeze. 3. overhead space; sky: The planes filled the air. 4 …   Universalium

  • Air stream — An airstream is a relatively well defined prevailing wind, it is name given to a body of air, or air mass, that moves from its source region and brings the weather with it.It can also mean the flow of air that is driven backwards by an aircraft… …   Wikipedia

  • Mass spectrometry — (MS) is an analytical technique that measures the mass to charge ratio of charged particles.[1] It is used for determining masses of particles, for determining the elemental composition of a sample or molecule, and for elucidating the chemical… …   Wikipedia

  • Air gun — Air rifle and Air pistol redirect here. For other uses, see Air gun (disambiguation) An air gun (air rifle or air pistol) is a rifle or pistol which fires projectiles by means of compressed air or other gas, (in contrast to a firearm which uses… …   Wikipedia

  • Air India Flight 182 — Boeing 747 237B Emperor Kanishka landing at London Heathrow Airport on 10 June 1985, a few days before the explosion Occurrence summary …   Wikipedia

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