Jose L Jimenez¹, Hongyu Guo², Pedro Campuzano Jost³, Benjamin Nault⁴, Doug A Day⁵, Christina Williamson⁶, Agnieszka Kupc⁷, Charles A Brock⁸, Gregory P Schill⁹, Karl D Froyd⁹, Eric M Scheuer¹⁰, Jack E Dibb¹¹, Joseph M Katich¹² and Joshua Peter Schwarz¹³, (1)Cooperative Institute for Research in Environmental Sciences, Boulder, CO, United States, (2)Georgia Institute of Technology, Earth and Atmospheric Sciences, Atlanta, GA, United States, (3)University of Colorado Boulder, Boulder, CO, United States, (4)University of California Berkeley, Dept. of Earth and Planetary Science, Berkeley, CA, United States, (5)University of Colorado, Dept. of Chemistry, Boulder, CO, United States, (6)NOAA/CIRES, Boulder, United States, (7)University of Vienna, Faculty of Physics, Vienna, Austria, (8)NOAA, Boulder, United States, (9)NOAA/CIRES, Boulder, CO, United States, (10)University of New Hampshire Main Campus, Durham, NH, United States, (11)Univ New Hampshire, Durham, NH, United States, (12)CIRES, Boulder, CO, United States, (13)NOAA ESRL, Boulder, CO, United States