+ NASA Home + Ames Home + Sitemap + Staff Directory +Home HIGH END SYSTEMS + Pleiades + Columbia + Schirra NAS DIVISION IMAGES Global Modeling of Aerosols Aerosol optical depth observed by the Moderate Resolution Imaging Spectroradiometer (MODIS) (left) and simulated by the Goddard Chemistry Aerosol Radiation and Transport (GOCART) model (right) for 13 April 2001 (top) and 22 August 2001 (bottom). Red indicates fine mode aerosols (e.g., pollution and smoke); green indicates coarse mode aerosols (e.g., dust and sea-salt); color brightness is proportional to the aerosol optical depth. 13 April sees transport of heavy dust and pollution from Asia to the Pacific, and dust transport from Africa to the Atlantic. 22 August sees large smoke plumes over South America and Southern Africa. Credit: NASA Science MissionDirectorate, Principle Investigator, Mian Chin + Feedback + Site Help + NASA Privacy Statement, Disclaimer, and Accessibility Certification Editor: Jill Dunbar Webmaster: Ryan Spaulding NASA Official: Rupak Biswas + Contact NAS Last Updated: August 20, 2009