1973. This polygon shapefile contains ice observations in the Arctic region for August 23, 1973. 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 November 6, 1983. 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 13, 1987. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1989. This polygon shapefile contains ice observations in the Arctic region for July 10, 1989. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1967. This polygon shapefile contains ice observations in the Arctic region for July 8, 1967. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1982. This polygon shapefile contains ice observations in the Arctic region for August 10, 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 July 21, 1975. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1983. This polygon shapefile contains ice observations in the Arctic region for August 8, 1983. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for June 19, 1973. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for June 28, 1977. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).