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Start Over You searched for: Year 1981 Remove constraint Year: 1981 Resource Type Polygon data Remove constraint Resource Type: Polygon data

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1981. This polygon shapefile contains ice observations in the Arctic region for May 11, 1981. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for May 19, 1981. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for May 26, 1981. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for May 7, 1981. This layer is part of the Arctic Climate System (ACSYS) Hist... Arctic Climate System (ACSYS).
1981. This polygon shapefile contains ice observations in the Arctic region for November 1, 1981. 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 November 13, 1981. 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 November 17, 1981. 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 November 25, 1981. 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 October 13, 1981. 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 October 19, 1981. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).