About the Authors

Peter T. Fretwell

ptf@bas.ac.uk

Affiliation British Antarctic Survey, Cambridge, United Kingdom

Michelle A. LaRue

Affiliation Polar Geospatial Center, University in Minnesota, Minneapolis, Minnesota, United States of America

Paul Morin

Affiliation Polar Geospatial Center, University in Minnesota, Minneapolis, Minnesota, United States of America

Gerald L. Kooyman

Affiliation Scripps Institution of Oceanography, University of California San Diego, La Jolla, California, United States of America

Barbara Wienecke

Affiliation Australian Antarctic Division, Hobart, Tasmania, Australia

Norman Ratcliffe

Affiliation British Antarctic Survey, Cambridge, United Kingdom

Adrian J. Fox

Affiliation British Antarctic Survey, Cambridge, United Kingdom

Andrew H. Fleming

Affiliation British Antarctic Survey, Cambridge, United Kingdom

Claire Porter

Affiliation Polar Geospatial Center, University in Minnesota, Minneapolis, Minnesota, United States of America

Phil N. Trathan

Affiliation British Antarctic Survey, Cambridge, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: PF NR GK CP AHF. Performed the experiments: PF ML CP. Analyzed the data: PF ML GK AJF. Contributed reagents/materials/analysis tools: PF ML PM CP. Wrote the paper: PF PT GK BW ML PM. Provided data: PM AHF GK BW.