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).
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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).
1973. This polygon shapefile contains ice observations in the Arctic region for October 18, 1973. 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 18, 1976. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1978. This polygon shapefile contains ice observations in the Arctic region for October 18, 1978. This polygon shapefile contains ice observations in the... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for October 18, 1979. 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 20, 1972. 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 20, 1975. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).