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1970. This polygon shapefile contains ice observations in the Arctic region for October 29, 1970. 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 October 29, 1979. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1985. This polygon shapefile contains ice observations in the Arctic region for October 29, 1985. 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 October 30, 1972. 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 October 30, 1973. 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 October 30, 1975. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1983. This polygon shapefile contains ice observations in the Arctic region for October 30, 1983. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1989. This polygon shapefile contains ice observations in the Arctic region for October 30, 1989. 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 October 31, 1979. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1988. This polygon shapefile contains ice observations in the Arctic region for October 31, 1988. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).