1978. This polygon shapefile contains ice observations in the Arctic region for July 19, 1978. This polygon shapefile contains ice observations in the Ar... Arctic Climate System (ACSYS).
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1989. This polygon shapefile contains ice observations in the Arctic region for November 20, 1989. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1982. This polygon shapefile contains ice observations in the Arctic region for June 17, 1982. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1986. This polygon shapefile contains ice observations in the Arctic region for July 28, 1986. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for July 23, 1973. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for December 8, 1977. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1987. This polygon shapefile contains ice observations in the Arctic region for November 2, 1987. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1989. This polygon shapefile contains ice observations in the Arctic region for June 5, 1989. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1986. This polygon shapefile contains ice observations in the Arctic region for June 29, 1986. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for November 26, 1973. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).