What Are Aerosols? Definition, Sources, Importance, and Effects
Aerosols in Environmental Studies: Definition, Sources, Importance, and Effects What Are Aerosols? Aerosols are tiny solid particles or liquid droplets that remain suspended in the Earth's atmosphere. They can occur naturally or be produced by human activities. Although they are microscopic, aerosols play a major role in weather, climate, air quality, and human health. Natural Sources of Aerosols Natural aerosols are formed from various environmental processes, including: Sea spray, which releases tiny salt particles into the air. Dust and clay particles produced by the weathering of rocks. Volcanic eruptions, which emit ash and gases. Forest fires, which release smoke and fine particles. Pollen and spores from plants. Wind carries many of these particles into the atmosphere, where they can remain suspended for long periods. Human-Made Sources of Aerosols Human activities also produce aerosols, such as: Vehicle exhaust Industrial emissions Burning of coal, wood, and cro...