As part of NASA's ARCSIX research program, U.S. Army Engineer Research and Development Center’s (ERDC) Cold Regions Research and Engineering Laboratory scientists Dr. Chris Polashenski, Tricia Nelsen and Roy Hessner engineered and deployed specially modified, sensor-laden buoys into the Arctic Ocean north of Canada and Greenland near the North Pole in an effort to help NASA better understand Arctic sea ice melting.