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1980. This polygon shapefile contains ice observations in the Arctic region for October 9, 1980. 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 August 14, 1983. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for August 5, 1968. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1967. This polygon shapefile contains ice observations in the Arctic region for October 21, 1967. 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 10, 1983. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1995. This polygon shapefile contains ice observations in the Arctic region for August 21, 1995. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for September 21, 1977. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1980. This polygon shapefile contains ice observations in the Arctic region for November 10, 1980. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1986. This polygon shapefile contains ice observations in the Arctic region for August 4, 1986. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1992. This polygon shapefile contains ice observations in the Arctic region for September 15, 1992. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).