Nicole S Lovenduski, University of Colorado, Department of Atmospheric and Oceanic Sciences, Boulder, CO, United States, Cheryl S Harrison, University of Texas Rio Grande Valley, School of Earth, Environmental and Marine Science, Port Isabel, TX, United States, Holly Olivarez, University of Colorado Boulder, Boulder, CO, United States, Charles Bardeen, National Center for Atmospheric Research, Boulder, CO, United States, Brian Toon, University of Colorado at Boulder, ATOC/LASP, Boulder, CO, United States, Alan Robock, Rutgers University, New Brunswick, NJ, United States and Tyler Rohr, Knauss/DOE, Washington, DC, United States