EARTH SCIENCE > ATMOSPHERE > AIR QUALITY > EMISSIONS
With respect to pollution, the discharge of gases or particles from a
source such as a smokestack or exhaust pipe into the atmosphere, perhaps
resulting in environmental pollution. With respect to radiation, the
generation and sending out of radiant energy.
Glossary of Meteorology, American Meteorological Society, 1998. Glossary of
Weather and Climate, American Meteorological Society, 1996.