Atmospheric Chemistry Division, National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80301, United States ; Department of Atmospheric and Oceanic Sciences, University of Colorado - Boulder, UCB 311 University of Colorado, Boulder, CO 80309, United States
Atmospheric Chemistry Division, National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80301, United States ; Department of Atmospheric and Oceanic Sciences, University of Colorado - Boulder, UCB 311 University of Colorado, Boulder, CO 80309, United States
Department of Physics, University of Helsinki, P.O. Box 64 University of Helsinki, Helsinki, 00014, Finland ; Atmospheric Chemistry Division, National Center for Atmospheric Research, 3450 Mitchell Lane, Boulder, CO 80301, United States
Department of Geography, Indiana University, 701 E. Kirkwood Ave., Bloomington, IN 47405, United States