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TeachMeFinance.com - explain aerosol aerosol The term 'aerosol' as it applies to the area of the environment can be defined as 'A collection of airborne solid or liquid particles, with a typical size between 0.01 and 10 micrometers (µm) and residing in the atmosphere for at least several hours. Aerosols may be of either natural or anthropogenic origin. Aerosols may influence climate in two ways: directly through scattering and absorbing radiation, and indirectly through acting as condensation nuclei for cloud formation or modifying the optical properties and lifetime of clouds. The term has also come to be associated, erroneously, with the propellant used in 'aerosol sprays.' See climate, particulate matter, sulfate aerosols'. The term 'aerosol' as it applies to the area of volcanos can be defined as 'Fine liquid or solid particles suspended in the atmosphere. Aerosols resulting from volcanic eruptions are tiny droplets of sulfuric acid -- sulfur dioxide that has picked up oxygen and water'. The term 'aerosol' as it applies to the area of Earth observation can be defined as ' Particles of liquid or solid dispersed as a suspension in gas'. Previous 5 Terms: aerometer aeronautics aerophilately aerophobia aeropleustic Next 5 Terms: aerostatics aeruginous aesthesiogenic aestival aethrioscope About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.