2002. This polygon shapefile contains ice observations in the Arctic region for October 17, 2002. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
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2002. This polygon shapefile contains ice observations in the Arctic region for October 18, 2002. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for October 21, 2002. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for October 22, 2002. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for October 23, 2002. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for October 24, 2002. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for October 25, 2002. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for October 29, 2002. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2001. Arctic Climate System (ACSYS). This polygon shapefile contains ice observations in the Arctic region for June 29, 2001. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
2012. Patterson, Tom and Kelso, Nathaniel Vaughn. This polyline shapefile depicts single-line drainages for rivers in North America only ranked by relative importance. Includes name and line width ... North American Cartographic Information Society.