1978. This polygon shapefile contains ice observations in the Arctic region for July 26, 1978. This polygon shapefile contains ice observations in the Ar... Arctic Climate System (ACSYS).
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1979. This polygon shapefile contains ice observations in the Arctic region for July 26, 1979. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for July 27, 1981. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1975. This polygon shapefile contains ice observations in the Arctic region for July 28, 1975. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1980. This polygon shapefile contains ice observations in the Arctic region for July 28, 1980. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1974. This polygon shapefile contains ice observations in the Arctic region for July 29, 1974. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1972. This polygon shapefile contains ice observations in the Arctic region for July 3, 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 July 3, 1975. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1980. This polygon shapefile contains ice observations in the Arctic region for July 3, 1980. 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 July 3, 1983. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).