Megan S Claflin¹, Demetrios Pagonis², Zachary Finewax³, Jordan E. Krechmer⁴, Manjula R Canagaratna⁴, Joost de Gouw⁵, John Toulson Jayne⁴, Douglas R Worsnop⁴ and Brian M Lerner⁶, (1)Aerodyne Research Inc., Billerica, United States, (2)University of Colorado at Boulder, Department of Chemistry, Boulder, CO, United States, (3)University of Colorado at Boulder, Dept. of Chemistry and Biochemistry, Boulder, CO, United States, (4)Aerodyne Research Inc., Billerica, MA, United States, (5)Cooperative Institute for Research in Environmental Sciences, Boulder, United States, (6)NOAA, Earth System Research La, Boulder, CO, United States