Adriana Raudzens Bailey, National Center for Atmospheric Research, Boulder, CO, United States, Daniel J Cziczo, Purdue University, West Lafayette, MA, United States, Lesly Franco, Massachusetts Institute of Technology, Cambridge, United States, Gannet Hallar, University of Utah, Salt Lake City, United States; Desert Research Institute, Reno, United States and Ian McCubbin, Desert Research Institute, Reno, NV, United States