William H Swartz, Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States, Lok N Lamsal, NASA Goddard Space Flight Ctr., Greenbelt, MD, United States, Melanie B Follette-Cook, NASA GSFC, Greenbelt, MD, United States, Kenneth E Pickering, University of Maryland College Park, Atmospheric and Oceanic Science, College Park, MD, United States, Sungyeon Choi, SSAI, Elkridge, MD, United States, Dale J Allen, University of Maryland College Park, College Park, MD, United States, Christopher Loughner, University of Maryland College Park, Earth System Science Interdisciplinary Center, College Park, MD, United States and Wyat Appel, Environmental Protection Agency Research Triangle Park, Research Triangle Park, NC, United States