1. Department of Atmospheric Sciences University of Illinois Urbana‐Champaign Urbana‐Champaign IL USA
2. Now at North Carolina Institute for Climate Studies North Carolina State University Asheville NC USA
3. Karlsruhe Institute of Technology Karlsruhe Germany
4. Department of Atmospheric Sciences Colorado State University Fort Collins CO USA
5. Now at Climate and Global Dynamics Laboratory National Center for Atmospheric Research Boulder CO USA