1982. This polygon shapefile contains ice observations in the Arctic region for June 8, 1982. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
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1978. This polygon shapefile contains ice observations in the Arctic region for June 9, 1978. This polygon shapefile contains ice observations in the Arc... Arctic Climate System (ACSYS).
1980. This polygon shapefile contains ice observations in the Arctic region for June 9, 1980. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for May 16, 1977. 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 18, 1976. 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 19, 1972. 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 20, 1976. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for May 21, 1973. 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 23, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for May 23, 1977. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).