Alma Hodzic, University Corporation for Atmospheric Research, Boulder, CO, United States, Pedro Campuzano-Jost, University of Colorado at Boulder, Department of Chemistry and Biochemistry, Boulder, CO, United States, Duseong Jo, University of Colorado at Boulder, Chemistry/CIRES, Boulder, CO, United States, Benjamin Nault, University of California Berkeley, Dept. of Earth and Planetary Science, Berkeley, CA, United States, Doug A Day, University of Colorado, Dept. of Chemistry, Boulder, CO, United States, Jason Clay Schroder, Colorado Department of Public Health and Environment, Denver, CO, United States, Jose L Jimenez, University of Colorado at Boulder, Department of Chemistry, Boulder, CO, United States, Simone Tilmes, National Center for Atmospheric Research, Atmospheric Chemistry, Observations, and Modeling Laboratory, Boulder, CO, United States and ATOM team