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1986. This polygon shapefile contains ice observations in the Arctic region for October 27, 1986. 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 October 27, 1987. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1998. This polygon shapefile contains ice observations in the Arctic region for October 27, 1998. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1999. This polygon shapefile contains ice observations in the Arctic region for October 27, 1999. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for October 27, 2000. 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 October 28, 1967. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for October 28, 1968. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for October 28, 1971. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1974. This polygon shapefile contains ice observations in the Arctic region for October 28, 1974. 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 October 28, 1976. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).