air mass : A large volume of air with certain meteorological or polluted characteristics, e,g, a heat inversion or smogginess-while in one location. The characteristics can change as the air mass moves away.
Air Mass
A large body of air with similar temperature and moisture characteristics as a result of having come from the same source region.
Air Padding ...
Air mass:a large quantity of air throughout which temperature and moisture content is fairly constant. Air pressure:pressure exerted by the weight of air over a given area of Earth's surface.
The properties that characterize the climate are thermal (temperatures of the surface air, water, land, and ice), kinetic (wind and ocean currents, together with associated vertical motions and the motions of air masses, aqueous humidity, ...
warm front The leading edge of an advancing warm air mass that is replacing a retreating relatively colder air mass.
Front - The marked boundaries of two air masses of differing densities. The difference in densities can be related to temperature, pressure or humidity. [Atmospheric Environment; v39; 1497-1511; 2005.] ...
Atmospheric transport of air pollutants within a moving air mass for a distance greater than 100 kilometres.
Definition source
United Nations. Glossary of Eenvironment statistics.
Plankton: Those organisms that are unable to maintain their position or distribution independent of the movement of water or air masses.
Pollution: The contamination of a natural ecosystem, especially with reference to the activity of humans.
 See also: Water, Air, Release, Atmosphere, Liquid
  
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