1980. This polygon shapefile contains ice observations in the Arctic region for September 29, 1980. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
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1977. This polygon shapefile contains ice observations in the Arctic region for August 23, 1977. 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 October 7, 1976. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1972. This polygon shapefile contains ice observations in the Arctic region for October 5, 1972. 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 August 20, 1970. 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 26, 1974. 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 August 16, 1977. 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 25, 1980. 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 August 30, 1977. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1987. This polygon shapefile contains ice observations in the Arctic region for August 31, 1987. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).