1. National Academies/National Research Council (NRC) Fellowship Participant at National Exposure Research Laboratory U.S. Environmental Protection Agency Research Triangle Park NC USA
2. Now at Center for Spatial Information Science and Systems/Cooperative Institute for Satellite Earth System Studies George Mason University Fairfax VA USA
3. Office of Air and Radiation, Air Resources Laboratory National Oceanic and Atmospheric Administration College Park MD USA
4. Center for Environmental Measurement and Modeling U.S. Environmental Protection Agency Research Triangle Park NC USA
5. Department of Earth and Environment Boston University Boston MA USA