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1973. This polygon shapefile contains ice observations in the Arctic region for August 20, 1973. 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 July 27, 1987. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1978. This polygon shapefile contains ice observations in the Arctic region for July 28, 1978. This polygon shapefile contains ice observations in the Ar... Arctic Climate System (ACSYS).
1982. This polygon shapefile contains ice observations in the Arctic region for November 14, 1982. 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 May 15, 1975. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for July 22, 1968. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1974. This polygon shapefile contains ice observations in the Arctic region for August 1, 1974. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for August 1, 1979. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1987. This polygon shapefile contains ice observations in the Arctic region for August 10, 1987. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for August 14, 1979. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).