Air quality

Air quality - Air Quality What is a pollutant? – airborne...

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Unformatted text preview: Air Quality What is a pollutant? – airborne particles and gases that occur in concentrations that endanger the health and well being of organisms. Examples of natural pollutants: a. Dust b. volatile organic compounds (VOCs) from vegetation. Example: natural haze in the Smoky Mountains. c. Sulfur dioxide from volcanoes. Air Pollution Types A. Primary pollutants – B. Secondary pollutants – Chemical reactions from primary pollutants Air Pollution Trends – downward – Why? Ozone Controls on Air Quality 1. Air pollution sources – where are they concentrated? Air quality across the Carolinas 2. Atmospheric dispersion Controlling factors A. Wind speed – During what periods (diurnal and seasonal) are the winds the weakest? (NIGHT. .. B. Atmospheric stability Nocturnal radiation inversion **INVERSION: ABSOLUTELY STABLE ATMOSPHERE. . Vertical motions are inhibited Daytime convection Subsidence Inversion:--ozone levels go down at night and up during the day Bermuda High largely responsible for mid-level subsidence in the Carolinas...
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This note was uploaded on 12/10/2010 for the course GEOG 111 taught by Professor Konrad,c during the Fall '07 term at UNC.

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Air quality - Air Quality What is a pollutant? – airborne...

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