Glenn Wolfe¹, Thomas F Hanisco¹, Donald Ray Blake², Thomas B Ryerson³, Paul O Wennberg⁴, Glenn S Diskin⁵, Samuel R Hall⁶, Jason Michael St Clair⁷, John D Crounse⁸, Jeff Peischl⁹, Ilana B Pollack¹⁰, Kirk Ullmann¹¹, Armin Wisthaler¹² and Andreas Joel Beyersdorf¹³, (1)NASA GSFC, Greenbelt, MD, United States, (2)University of California Irvine, Irvine, CA, United States, (3)NOAA ESRL Chemical Sciences Division, Boulder, CO, United States, (4)California Institute of Technology, Pasadena, CA, United States, (5)NASA Langley Research Ctr, Hampton, VA, United States, (6)NCAR, Denver, CO, United States, (7)Caltech, Pasadena, CA, United States, (8)California Institute of Technology - CalTech, Pasadena, CA, United States, (9)NOAA Chemical Sciences Division, Boulder, CO, United States, (10)Colorado State University, Atmospheric Science Department, Ft. Collins, CO, United States, (11)National Center for Atmospheric Research, Boulder, CO, United States, (12)University of Oslo, Oslo, Norway, (13)NASA Langley Research Center, Hampton, VA, United States