1990. This polygon shapefile contains ice observations in the Arctic region for May 14, 1990. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
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1994. This polygon shapefile contains ice observations in the Arctic region for December 19, 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 January 21, 1991. This layer is part of the Arctic Climate System (ACSYS)... Arctic Climate System (ACSYS).
1939, 1940, 1941, 1942, 1943, 1944, 1945, 1946, 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, 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 Europe compiled from sources dating from 1939 to 2009. Heat flow is a measure of heat loss across ... International Heat Flow Commission.
1995. This polygon shapefile contains ice observations in the Arctic region for April 10, 1995. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1997. This polygon shapefile contains ice observations in the Arctic region for May 12, 1997. This layer is part of the Arctic Climate System (ACSYS) His... Arctic Climate System (ACSYS).
1990. This polygon shapefile contains ice observations in the Arctic region for December 24, 1990. 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 February 15, 1993. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).
1995. This polygon shapefile contains ice observations in the Arctic region for March 13, 1995. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1991. This polygon shapefile contains ice observations in the Arctic region for February 11, 1991. This layer is part of the Arctic Climate System (ACSYS... Arctic Climate System (ACSYS).