Nabil Nowak¹, Elena Spinei¹, Andrew Whitehill², Luke Valin³, James Szykman⁴, David James Williams³, Lena Shalaby⁵, Nader Abuhassan⁶ and Robert Swap⁷, (1)Virginia Polytechnic Institute and State University, Blacksburg, VA, United States, (2)US Environmental Protection Agency Research Triangle Park, Durham, NC, United States, (3)Environmental Protection Agency Research Triangle Park, Research Triangle Park, NC, United States, (4)US EPA, ORD, National Exposure Research Laboratory, Hampton, VA, United States, (5)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (6)NASA GSFC, Greenbelt, MD, United States, (7)NASA GSFC, Greenbelt, United States