1. Maryland Department of the Environment, Baltimore, MD, USA
2. NOAA, Air Resources Laboratory, College Park, MD, USA
3. University of Maryland, College Park, College Park, MD, USA
4. NASA, Goddard Space Flight Center, Greenbelt, MD, USA
5. University of Maryland Baltimore County, Baltimore, MD, USA
6. NASA, Langley Research Center, Hampton, VA, USA
7. Science Systems and Application Inc (SSAI), Hampton, VA, USA