Spatial Distribution of Aerosols in Four U.S. Regions: Impacts on Satellite Measurements. ANDREAS BEYERSDORF, Luke Ziemba, Timothy A. Berkoff, Sharon P. Burton, Gao Chen, James Collins, Anthony L. Cook, Chelsea Corr, Suzanne Crumeyrolle, Marta Fenn, Richard Ferrare, Johnathan Hair, David B. Harper, Chris Hostetler, Jack J. Lin, Robert Martin, Richard Moore, Raymond R. Rogers, Amy Jo Scarino, Shane Seaman, Michael Shook, Kenneth Thornhill, Edward Winstead, Bruce Anderson, NASA Langley Research Center