Don Cline, National Operational Hydrologic Remote Sensing Center National Weather Service, NOAA 1735 Lake Drive West, Chanhassen, MN 55317 United States
Robert E. Davis, Cold Regions Research and Engineering Laboratory 72 Lyme Road, Hanover, NH 03755 United States
Simon Yueh, Jet Propulsion Laboratory California Institute of Technology, Pasadena, CA 91109 United States