Air stagnation

Air stagnation

Air stagnation is a phenomenon which occurs when an air mass remains over an area for an extended period of time. Due to light winds and lack of precipitation, pollutants cannot be cleared from the air, either gaseous (like ozone) or particulate (like soot or dust). In the United States, the National Weather Service issues an "Air Stagnation Advisory" when these conditions are likely to occur. [National Weather Service glossary. [http://www.nws.noaa.gov/glossary/index.php?word=air+stagnation Air Stagnation.] Retrieved on 2008-05-31.]

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