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1968. This polygon shapefile contains ice observations in the Arctic region for October 7, 1968. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1975. This polygon shapefile contains ice observations in the Arctic region for October 6, 1975. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1980. This polygon shapefile contains ice observations in the Arctic region for August 21, 1980. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1974. This polygon shapefile contains ice observations in the Arctic region for August 19, 1974. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1970. This polygon shapefile contains ice observations in the Arctic region for September 24, 1970. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1988. This polygon shapefile contains ice observations in the Arctic region for August 15, 1988. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, and 2016. Gap Analysis Program (U.S.). This polygon shapefile contains combined PAD-US Fee and Easements features for Landscape Conservation Cooperative (LCC) 13. The USGS Protected Area... Gap Analysis Program (U.S.).
1982. This polygon shapefile contains ice observations in the Arctic region for August 31, 1982. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1983. This polygon shapefile contains ice observations in the Arctic region for September 3, 1983. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1967. This polygon shapefile contains ice observations in the Arctic region for September 9, 1967. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).