1981. This polygon shapefile contains ice observations in the Arctic region for March 9, 1981. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
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1970. This polygon shapefile contains ice observations in the Arctic region for May 10, 1970. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for May 10, 1971. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1976. This polygon shapefile contains ice observations in the Arctic region for May 10, 1976. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1978. This polygon shapefile contains ice observations in the Arctic region for May 10, 1978. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for May 10, 1979. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1983. This polygon shapefile contains ice observations in the Arctic region for May 10, 1983. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1972. This polygon shapefile contains ice observations in the Arctic region for May 12, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1975. This polygon shapefile contains ice observations in the Arctic region for May 12, 1975. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for May 13, 1968. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).