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Start Over Year 1968 Resource Type Polygon data
1968. This polygon shapefile contains ice observations in the Arctic region for June 10, 1968. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for June 17, 1968. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for June 24, 1968. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for June 3, 1968. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for March 11, 1968. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for March 18, 1968. The ACSYS Historical Ice Chart Archive presents historic... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for March 25, 1968. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for March 4, 1968. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for May 13, 1968. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1968. This polygon shapefile contains ice observations in the Arctic region for May 20, 1968. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).