The Dehn Collection of Arctic Sea Ice Charts, 1953-1986

The Dehn Collection of Arctic Sea Ice Charts, 1953-1986 William H. Dehn was one of the first ice observers for the U.S. Navy, flying in the 1950s on ice reconnaissance flights. NSIDC houses a collection compiled by Dehn of 6,896 paper ice charts of Alaska, the western Canadian Arctic and Bering Sea waters. These charts have been scanned through the NOAA@NSIDC Climate Database Modernization Program and many are now available online. Many charts predate satellite observations and the regular ice charting activities of the U.S. National Ice Center, and are believed to contain information on location and extent of sea ice cover that is not available elsewhere.