1981. This polygon shapefile contains ice observations in the Arctic region for September 15, 1981. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
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1988. This polygon shapefile contains ice observations in the Arctic region for August 1, 1988. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for August 20, 1979. 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 September 8, 1975. 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 July 18, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1983. This polygon shapefile contains ice observations in the Arctic region for October 23, 1983. 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 August 7, 1972. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1972. This polygon shapefile contains ice observations in the Arctic region for August 21, 1972. 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 July 20, 1972. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1982. This polygon shapefile contains ice observations in the Arctic region for August 24, 1982. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).