%0 U.S. Federal Government Document %E National Ice Center (U.S.) %E National Climatic Data Center (U.S.) %E United States. Naval Meteorology and Oceanography Command. Fleet Numerical Meteorology and Oceanography Detachment %I National Ice Center %D 1996 %C Washington, D.C. %G English %T Arctic and Antarctic sea ice data : 1972-1994 %7 Array