1977. This polygon shapefile contains ice observations in the Arctic region for October 20, 1977. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
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1978. This polygon shapefile contains ice observations in the Arctic region for October 20, 1978. This polygon shapefile contains ice observations in the... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for October 21, 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 21, 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 21, 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 21, 1976. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1984. This polygon shapefile contains ice observations in the Arctic region for October 21, 1984. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1970. This polygon shapefile contains ice observations in the Arctic region for October 22, 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 22, 1979. 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 23, 1973. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).