1. Environmental Sciences & Engineering, University of North Carolina, Chapel Hill, Chapel Hill, North Carolina, USA
2. Atmospheric Sciences, Texas A&M University, College Station, Texas, USA
3. Education, University of North Carolina, Asheville, North Carolina, USA
4. Envair, Albany, California, USA
5. Texas Commission Environmental Quality, Austin, Texas, USA
6. Pacific Northwest National Laboratory, Richland, Washington State, USA