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Start Over Subject Sea ice
1997. This polygon shapefile contains ice observations in the Arctic region for September 29, 1997. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1998. This polygon shapefile contains ice observations in the Arctic region for September 29, 1998. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1999. This polygon shapefile contains ice observations in the Arctic region for September 29, 1999. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for September 29, 2000. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1970. This polygon shapefile contains ice observations in the Arctic region for September 3, 1970. 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 September 3, 1973. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1974. This polygon shapefile contains ice observations in the Arctic region for September 3, 1974. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1977. This polygon shapefile contains ice observations in the Arctic region for September 3, 1977. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for September 3, 1979. 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 September 3, 1983. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).