1973. This polygon shapefile contains ice observations in the Arctic region for November 22, 1973. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
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1975. This polygon shapefile contains ice observations in the Arctic region for July 24, 1975. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1967. This polygon shapefile contains ice observations in the Arctic region for June 24, 1967. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1987. This polygon shapefile contains ice observations in the Arctic region for June 22, 1987. 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 June 11, 1983. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1967. This polygon shapefile contains ice observations in the Arctic region for June 3, 1967. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for November 15, 1977. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for August 6, 1973. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1967. This polygon shapefile contains ice observations in the Arctic region for June 17, 1967. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1989. This polygon shapefile contains ice observations in the Arctic region for May 2, 1989. This layer is part of the Arctic Climate System (ACSYS) Hist... Arctic Climate System (ACSYS).