1991. This polygon shapefile contains ice observations in the Arctic region for September 2, 1991. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
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1983. This polygon shapefile contains ice observations in the Arctic region for August 20, 1983. 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 August 12, 1972. 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 August 11, 1975. 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 September 13, 1973. 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 September 4, 1975. 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 2, 1976. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1976. This polygon shapefile contains ice observations in the Arctic region for July 22, 1976. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for September 21, 1971. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for August 12, 1981. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).