2014. Wessel, Paul and Smith, Walter H. F. This polygon shapefile represents the shoreline boundary between the Antarctic grounding line and the Antarctic Ocean at crude resolution. Crude re... United States. National Geospatial-Intelligence Agency.
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2000. This polygon shapefile contains ice observations in the Arctic region for November 1, 2000. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for November 10, 2000. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for November 13, 2000. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for November 3, 2000. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for November 9, 2000. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for October 18, 2000. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for October 19, 2000. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for October 20, 2000. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2000. This polygon shapefile contains ice observations in the Arctic region for October 23, 2000. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).