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1970. This polygon shapefile contains ice observations in the Arctic region for August 27, 1970. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1991. This polygon shapefile contains ice observations in the Arctic region for July 29, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1986. This polygon shapefile contains ice observations in the Arctic region for September 8, 1986. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1992. This polygon shapefile contains ice observations in the Arctic region for September 28, 1992. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1996. This polygon shapefile contains ice observations in the Arctic region for October 14, 1996. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2010. U.S. Counties represents the counties of the United States. This data set provides six feature classes for displaying the data at different scales....
1996. This polygon shapefile contains ice observations in the Arctic region for August 12, 1996. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1976. This polygon shapefile contains ice observations in the Arctic region for August 26, 1976. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1976. This polygon shapefile contains ice observations in the Arctic region for August 30, 1976. 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 31, 1980. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).