1999. This polygon shapefile contains ice observations in the Arctic region for August 6, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
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1999. This polygon shapefile contains ice observations in the Arctic region for August 9, 1999. This layer is part of the Arctic Climate System (ACSYS) H... Arctic Climate System (ACSYS).
1999. This polygon shapefile contains ice observations in the Arctic region for July 29, 1999. 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 July 30, 1999. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).
1830, 1831, 1832, 1833, 1834, 1835, 1836, 1837, 1838, 1839, 1840, 1841, 1842, 1843, 1844, 1845, 1846, 1847, 1848, 1849, 1850, 1851, 1852, 1853, 1854, 1855, 1856, 1857, 1858, 1859, 1860, 1861, 1862, 1863, 1864, 1865, 1866, 1867, 1868, 1869, 1870, 1871, 1872, 1873, 1874, 1875, 1876, 1877, 1878, 1879, 1880, 1881, 1882, 1883, 1884, 1885, 1886, 1887, 1888, 1889, 1890, 1891, 1892, 1893, 1894, 1895, 1896, 1897, 1898, 1899, 1900, 1901, 1902, 1903, 1904, 1905, 1906, 1907, 1908, 1909, 1910, 1911, 1912, 1913, 1914, 1915, 1916, 1917, 1918, 1919, 1920, 1921, 1922, 1923, 1924, 1925, 1926, 1927, 1928, 1929, 1930, 1931, 1932, 1933, 1934, 1935, 1936, 1937, 1938, 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, and 2008. National Atlas of the United States. This poygon shapefile portrays the distributions of United States and Canadian bat species during the past 100-150 years (1830-2009). The specimen ... National Atlas of the United States.
1999. This polygon shapefile contains ice observations in the Arctic region for June 10, 1999. 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 June 11, 1999. 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 June 14, 1999. 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 June 15, 1999. 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 June 16, 1999. This layer is part of the Arctic Climate System (ACSYS) Hi... Arctic Climate System (ACSYS).