1977. This polygon shapefile contains ice observations in the Arctic region for July 4, 1977. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
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1984. This polygon shapefile contains ice observations in the Arctic region for June 17, 1984. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for November 25, 1968. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for October 6, 1981. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1967. This polygon shapefile contains ice observations in the Arctic region for July 15, 1967. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1975. This polygon shapefile contains ice observations in the Arctic region for June 12, 1975. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1984. This polygon shapefile contains ice observations in the Arctic region for July 3, 1984. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for June 1, 1973. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1975. This polygon shapefile contains ice observations in the Arctic region for June 9, 1975. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for June 13, 1977. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).