1970. This polygon shapefile contains ice observations in the Arctic region for October 15, 1970. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
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1973. This polygon shapefile contains ice observations in the Arctic region for October 15, 1973. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1980. This polygon shapefile contains ice observations in the Arctic region for October 15, 1980. 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 16, 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 16, 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 16, 1989. 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 17, 1972. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for October 17, 1977. 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 17, 1988. 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 18, 1971. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).