2002. This polygon shapefile contains ice observations in the Arctic region for November 29, 2002. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
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1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 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 Asia compiled from sources dating from 1947 to 2008. Heat flow is a measure of heat loss across th... International Heat Flow Commission.
2001. This polygon shapefile contains ice observations in the Arctic region for January 15, 2001. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for January 16, 2001. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for January 17, 2001. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for January 18, 2001. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
2011. United States. Federal Highway Administration, Lubkin, Samantha, Blades, Doug, and United States. Bureau of Transportation Statistics. This point shapefile depicts the more than 600,000 of the United States' bridges located on public roads, including interstate highways, United Sta... United States. Bureau of Transportation Statistics.
2001. This polygon shapefile contains ice observations in the Arctic region for May 10, 2001. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for May 11, 2001. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
2001. This polygon shapefile contains ice observations in the Arctic region for May 14, 2001. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).