1974. This polygon shapefile contains ice observations in the Arctic region for May 13, 1974. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
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1976. This polygon shapefile contains ice observations in the Arctic region for May 13, 1976. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1978. This polygon shapefile contains ice observations in the Arctic region for May 13, 1978. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for May 14, 1979. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1972. This polygon shapefile contains ice observations in the Arctic region for May 15, 1972. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1970. This polygon shapefile contains ice observations in the Arctic region for May 16, 1970. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1979. This polygon shapefile contains ice observations in the Arctic region for May 16, 1979. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1988. This polygon shapefile contains ice observations in the Arctic region for May 16, 1988. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for May 18, 1971. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1978. This polygon shapefile contains ice observations in the Arctic region for May 18, 1978. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).