Cooperative Institute for Research in the Environmental Sciences (CIRES), University of Colorado, Boulder, CO, USA

Cooperative Institute for Research in the Environmental Sciences (CIRES), University of Colorado, Boulder, CO, USA

Atmospheric Science Department, Colorado State University, Fort Collins, CO, USA

NOAA Earth System Research Laboratory, Boulder, CO, USA

NOAA Earth System Research Laboratory, Boulder, CO, USA

Cooperative Institute for Research in the Environmental Sciences (CIRES), University of Colorado, Boulder, CO, USA

Cooperative Institute for Research in the Environmental Sciences (CIRES), University of Colorado, Boulder, CO, USA

Dept. of Chemistry and Biochemistry, University of Colorado, Boulder, CO, USA

University of California at San Diego, CA, USA

University of California at San Diego, CA, USA

Aerosol Dynamics, Inc., Berkeley, CA, USA

Cooperative Institute for Research in the Environmental Sciences (CIRES), University of Colorado, Boulder, CO, USA

Dept. of Chemistry and Biochemistry, University of Colorado, Boulder, CO, USA