Sebastian Schmidt, LASP, University of Colorado, Boulder, CO, United States, Hong Chen, LASP, University of Colorado Boulder, Boulder, CO, United States, Takanobu Yamaguchi, NOAA ESRL Chemical Sciences Division / CIRES University of Colorado, Boulder, CO, United States, Graham Feingold, NOAA CSD, Boulder, CO, United States, Steven T Massie, LASP, University of Colorado at Boulder, Boulder, CO, United States, Jake Joseph Gristey, Cooperative Institute for Research in Environmental Sciences, NOAA CSD, Boulder, United States and Hartwig Deneke, Leibniz Institute for Tropospheric Research, Leipzig, Germany