1977. This polygon shapefile contains ice observations in the Arctic region for October 8, 1977. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
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1980. This polygon shapefile contains ice observations in the Arctic region for November 3, 1980. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1982. This polygon shapefile contains ice observations in the Arctic region for September 26, 1982. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for September 10, 1977. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1975. This polygon shapefile contains ice observations in the Arctic region for August 21, 1975. 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 25, 1983. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1976. This polygon shapefile contains ice observations in the Arctic region for August 10, 1976. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for August 2, 1973. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for September 23, 1971. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for September 10, 1973. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).