1975. This polygon shapefile contains ice observations in the Arctic region for July 31, 1975. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
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1987. This polygon shapefile contains ice observations in the Arctic region for June 9, 1987. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for November 17, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1986. This polygon shapefile contains ice observations in the Arctic region for December 1, 1986. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1978. This polygon shapefile contains ice observations in the Arctic region for July 21, 1978. This polygon shapefile contains ice observations in the Ar... Arctic Climate System (ACSYS).
1975. This polygon shapefile contains ice observations in the Arctic region for May 22, 1975. 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 24, 1973. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1989. This polygon shapefile contains ice observations in the Arctic region for June 26, 1989. 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 13, 1971. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1983. This polygon shapefile contains ice observations in the Arctic region for June 5, 1983. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).