Dept Physics & Atmospheric Sci, Dalhousie University, Halifax, NS, Canada
Dept Physics & Atmospheric Science, Dalhousie University, Halifax, NS, CanadaAF: Harvard-Smithsonian Center for Astrophysics, Cambridge, United States
Dept Physics & Atmospheric Sci, Dalhousie University, Halifax, NS, Canada
Dept Physics & Atmospheric Sci, Dalhousie University, Halifax, NS, Canada
Dept Physics & Atmospheric Sci, Dalhousie University, Halifax, NS, Canada
Atmospheric Science, Colorado State University, Fort Collins, CO, United States