Over the last few years, the Arizona State University Doppler lidar has been deployed in several field experiments studying various aspects of the atmospheric boundary layer. In our studies involving aerosol plume tracking, the focus has been on identifying transport mechanism. Knowledge of these transport mechanisms is invaluable for purposes of reducing aerosol pollution exposure through improved design and procedure. The Doppler lidar, in its ability to remotely detect cross-sections of aerosol plumes that are invisible to the naked eye, has removed a great deal of speculation that would otherwise be involved in ascertaining a “source to sensor” pathway for a given pollutant. This has allowed for assessments to be made based on our studies that would guide efforts toward reducing aerosol pollution exposure. An overview of results from theses studies will be presented.