1999. This polygon shapefile contains ice observations in the Arctic region for December 30, 1999. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
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2000. This polygon shapefile contains ice observations in the Arctic region for January 3, 2000. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1998. This polygon shapefile contains ice observations in the Arctic region for November 19, 1998. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1998. This polygon shapefile contains ice observations in the Arctic region for December 11, 1998. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1990. This polygon shapefile contains ice observations in the Arctic region for July 2, 1990. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1990. This polygon shapefile contains ice observations in the Arctic region for May 21, 1990. 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 December 8, 1998. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1995. This polygon shapefile contains ice observations in the Arctic region for April 18, 1995. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1997. This polygon shapefile contains ice observations in the Arctic region for May 5, 1997. This layer is part of the Arctic Climate System (ACSYS) Hist... Arctic Climate System (ACSYS).
1991. This polygon shapefile contains ice observations in the Arctic region for January 28, 1991. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).