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1997. This polygon shapefile contains ice observations in the Arctic region for September 26, 1997. 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 26, 2000. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for September 26, 2001. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for September 26, 2002. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1973. This polygon shapefile contains ice observations in the Arctic region for September 27, 1973. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1976. This polygon shapefile contains ice observations in the Arctic region for September 27, 1976. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1978. This polygon shapefile contains ice observations in the Arctic region for September 27, 1978. This polygon shapefile contains ice observations in t... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for September 27, 1979. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1993. This polygon shapefile contains ice observations in the Arctic region for September 27, 1993. 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 27, 1999. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).