a term denoting a geographical area of which, because of topography, meteorology, and climate, shares the same air (see Air Basins)
An area or region defined by settlement patterns or geology that results in discrete atmospheric conditions
A geographical area which shares the same air mass due to topography, meteorology, and climate
a geographical region with some sort of natural boundaries which demonstrates common production and exchange of air pollutants
A geographically isolated volume of air, usually above and/or downwind from industrial activity, that bears pollutants away for dilution and dispersal
In recent years, the term "airshed" has been used to describe those areas where significant portions of emissions result in deposition of the various air pollutants to a region Many types of air pollution are carried by the wind from state to state, and are harmful to people and the environment, even in rural areas
a delineated area within which emitted pollutants interact or increase in concentration
The volume of the atmosphere that must be considered when taking account of the effects of certain types of emissions on human health and the environment The airshed will vary depending on the type of contaminant, weather and geography (especially the built environment), and the actual effect being assessed