1973. This polygon shapefile contains ice observations in the Arctic region for June 4, 1973. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
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1985. This polygon shapefile contains ice observations in the Arctic region for June 17, 1985. 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 October 27, 1980. 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 November 13, 1972. 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 July 29, 1976. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for August 6, 1971. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for August 16, 1973. 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 June 14, 1979. 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 June 16, 1980. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for December 9, 1971. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).