1. Department of Atmospheric and Oceanic Sciences University of Wisconsin‐Madison Madison WI USA
2. Institute of Arctic and Alpine Research University of Colorado Boulder Boulder CO USA
3. Department of Atmospheric and Oceanic Sciences University of Colorado Boulder Boulder CO USA
4. School of Oceanography Shanghai Jiao Tong University Shanghai China
5. Department of Geography The Ohio State University Columbus OH USA
6. Department of Geological Sciences University of Colorado Boulder Boulder CO USA