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An airshed is a part of the atmosphere that behaves in a coherent way with respect to the dispersion of emissions. It typically forms an analytical or management unit. Also: a geographic boundary for air-quality standards.

Alternatively - an airshed is a geographical area where local topography and meteorology limit the dispersion of pollutants away from the area.[1]


  1. ^ Okrainetz, Glen. "Air Quality Management in British Columbia" (PDF). BC Lung Ass'n. Archived from the original (PDF) on January 16, 2014. Retrieved July 6, 2013.

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