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1992. This polygon shapefile contains ice observations in the Arctic region for May 25, 1992. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1998. This polygon shapefile contains ice observations in the Arctic region for May 25, 1998. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1999. This polygon shapefile contains ice observations in the Arctic region for May 25, 1999. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for May 25, 2001. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1975. This polygon shapefile contains ice observations in the Arctic region for May 26, 1975. 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 May 26, 1977. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1978. This polygon shapefile contains ice observations in the Arctic region for May 26, 1978. This polygon shapefile contains ice observations in the Arc... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for May 26, 1981. 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 May 26, 1986. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1997. This polygon shapefile contains ice observations in the Arctic region for May 26, 1997. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).