1981. This polygon shapefile contains ice observations in the Arctic region for September 23, 1981. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
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1970. This polygon shapefile contains ice observations in the Arctic region for December 17, 1970. 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 May 23, 1983. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1982. This polygon shapefile contains ice observations in the Arctic region for October 31, 1982. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for October 13, 1981. 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 19, 1978. This polygon shapefile contains ice observations in the Ar... Arctic Climate System (ACSYS).
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).