1992. This polygon shapefile contains ice observations in the Arctic region for July 27, 1992. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
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1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, and 2008. International Heat Flow Commission, International Association of Seismology and Physics of the Earth's Interior, and Oklahoma State University. Department of Geography. Cartography Service. This point shapefile contains heat flow data for South America compiled from sources dating from 1970 to 2008. Heat flow is a measure of heat loss ... International Heat Flow Commission.
1994. This polygon shapefile contains ice observations in the Arctic region for October 31, 1994. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1991. This polygon shapefile contains ice observations in the Arctic region for June 17, 1991. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1999. This polygon shapefile contains ice observations in the Arctic region for October 11, 1999. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1999. This polygon shapefile contains ice observations in the Arctic region for October 8, 1999. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1993. This polygon shapefile contains ice observations in the Arctic region for July 26, 1993. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1993. This polygon shapefile contains ice observations in the Arctic region for May 24, 1993. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1994. This polygon shapefile contains ice observations in the Arctic region for August 1, 1994. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1992. This polygon shapefile contains ice observations in the Arctic region for October 12, 1992. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).