Cooperative Institute for Research in Environmental Sciences & Department of Aerospace Engineering Sciences, University of Colorado at Boulder, 216 UCB, CIRES, Boulder, CO 80309, USA
Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS B3H 3J5, Canada
Physical Sciences Division, British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, United Kingdom
School of Chemistry, University of Leeds, Leeds, LS2 9JT, United Kingdom
Cooperative Institute for Research in Environmental Sciences & Department of Aerospace Engineering Sciences, University of Colorado at Boulder, 216 UCB, CIRES, Boulder, CO 80309, USA