Airshed
Encyclopedia
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.
Earth's atmosphere
The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention , and reducing temperature extremes between day and night...
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.