1971. This polygon shapefile contains ice observations in the Arctic region for October 11, 1971. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
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1971. This polygon shapefile contains ice observations in the Arctic region for August 31, 1971. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for September 2, 1971. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for October 1, 1971. This layer is part of the Arctic Climate System (ACSYS) ... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for September 16, 1971. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for September 10, 1971. This layer is part of the Arctic Climate System (ACSY... Arctic Climate System (ACSYS).
1971. This polygon shapefile contains ice observations in the Arctic region for September 7, 1971. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
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, and 1998. Patuxent Wildlife Research Center. This line shapefile portrays the current routes used for conducting Breeding Bird Surveys in the lower 48 States. This layer is part of the 1997-20... National Atlas of the United States.
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, 2008, and 2009. 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 Australia compiled from sources dating from 1953 to 2009. Heat flow is a measure of heat loss acro... International Heat Flow Commission.
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 Oceania compiled from sources dating from 1969 to 2008. Heat flow is a measure of heat loss across... International Heat Flow Commission.