1. Department of Geography, Ohio State University, Columbus, OH, USA.
2. School of Geography Science, Nanjing Normal University, Nanjing, China.
3. Byrd Polar and Climate Research Center, Ohio State University, Columbus, OH, USA.
4. School of Earth Sciences, Ohio State University, Columbus, OH, USA.
5. Department of Earth Sciences, University of Connecticut, Storrs, CT, USA.
6. Scripps Institute of Oceanography, University of California, San Diego, San Diego, CA, USA.
7. Department of Geosciences, University of Arizona, Tucson, AZ, USA.
8. Department of Earth and Planetary Sciences, University of California–Davis, Davis, CA, USA.
9. Department of Earth and Environmental Sciences, Vanderbilt University, Nashville, TN, USA.