1992. This polygon shapefile contains ice observations in the Arctic region for June 22, 1992. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
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1993. This polygon shapefile contains ice observations in the Arctic region for June 29, 1993. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1986. This polygon shapefile contains ice observations in the Arctic region for January 20, 1986. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1987. This polygon shapefile contains ice observations in the Arctic region for April 21, 1987. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
2004. Instituto Nacional de Estadística, Geografía e Informática (Mexico), Geological Survey (U.S.), and Canada Centre for Remote Sensing. This polygon shapefile shows the approximate extent of marine areas in the Arctic covered by permanent polar ice. The data originated from the Cana... Geological Survey (U.S.).
1992. This polygon shapefile contains ice observations in the Arctic region for August 4, 1992. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1986. This polygon shapefile contains ice observations in the Arctic region for April 1, 1986. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1985. This polygon shapefile contains ice observations in the Arctic region for April 10, 1985. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1985. This polygon shapefile contains ice observations in the Arctic region for April 22, 1985. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1985. This polygon shapefile contains ice observations in the Arctic region for April 16, 1985. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).