1972. This polygon shapefile contains ice observations in the Arctic region for December 14, 1972. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
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1989. This polygon shapefile contains ice observations in the Arctic region for January 2, 1989. 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 February 16, 1981. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1989. This polygon shapefile contains ice observations in the Arctic region for January 9, 1989. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1988. This polygon shapefile contains ice observations in the Arctic region for May 24, 1988. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1991. This polygon shapefile contains ice observations in the Arctic region for August 12, 1991. 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 December 19, 1982. 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 December 20, 1979. 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 November 23, 1978. This polygon shapefile contains ice observations in th... Arctic Climate System (ACSYS).
1997. This polygon shapefile contains ice observations in the Arctic region for June 24, 1997. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).