2000. This polygon shapefile contains ice observations in the Arctic region for September 28, 2000. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
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2000. This polygon shapefile contains ice observations in the Arctic region for September 29, 2000. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
2014. United States. National Geospatial-Intelligence Agency. UNCLASSIFED World Port Index Arctic coverage. Arctic coverage of the NGA World Port Index-Small Harborsize. Data current as of 11 December 2014. Th... United States. National Geospatial-Intelligence Agency.
2000. This polygon shapefile contains ice observations in the Arctic region for September 22, 2000. 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 25, 2000. 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 August 6, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for August 7, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for August 8, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
2002. This polygon shapefile contains ice observations in the Arctic region for August 9, 2002. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for September 18, 2000. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).