Mount Logan Ice Core Isotope and Accumulation Data ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: PLEASE CITE CONTRIBUTORS WHEN USING THIS DATA!!!!! NAME OF DATA SET: Mount Logan Ice Core Isotope and Accumulation Data LAST UPDATE: 11/2002 (Original Receipt by WDC Paleo) Extends the original 1980 Mt Logan Ice Core record - see references CONTRIBUTORS: Kent Moore, Gerald Holdsworth, and Keith Alverson. IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2002-079 SUGGESTED DATA CITATION: Moore, G.W.K., et al., 2002, Mount Logan Ice Core Isotope and Accumulation Data, IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series #2002-79. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Moore, G.W.K., G. Holdsworth, and K. Alverson, 2002, Climate change in the North Pacific region over the past three centuries Nature, 420, 6914, 401-403 (28 November 2002); doi:10.1038/nature01229 ADDITIONAL REFERENCES: Holdsworth, G., H.R. Krouse and M. Nosal, 1992, Ice core climate signals from Mount Logan, Yukon A.D. 1700-1897, In: Climate Since A.D. 1500. Raymond S. Bradley and Philip D. Jones (eds.). Routledge. London and New York. pp. 483-504. Monaghan, M.C. and G. Holdsworth, 1990, The origin of non-sea-salt sulphate in the Mount Logan ice core, Nature 343:245-248. Holdsworth, G., H.R. Krouse, and E. Peake, 1988, Trace-acid ion content of shallow snow and ice cores from mountain sites in western Canada, Annals of Glaciology 10:57-62. Holdsworth, G. 1992 Ice cores as a source of long-term net precipitation data: a North American perspective, in Using hydrometric data to detect and monitor climatic change, Nat. Hydrol. Res. Institute, Saskatoon, Procedings of Symposium No. 8, 107-120 Holdsworth, G., 2001 Atmospheric teleconnection between Japan and the Saint Elias Mountains, Yukon, in Environmental Research in the Arctic 2000, Mem. NIPR, Tokyo,special issue No. 54, 161-168. FUNDING SOURCES: The Mount Logan time series update was supported by the International Arctic Research Center, Fairbanks, the Geological Survey of Canada, the National Institute of Polar Research, Tokyo, and the Natural Sciences and Engineering Research Council of Canada. GEOGRAPHIC REGION: Northwest North American, Yukon Territory PERIOD OF RECORD: 1736-2000 AD DESCRIPTION: 301-year snow accumulation record from from Mount Logan, Yukon 60 Degrees 36.9' N; 140 Degrees 30.9' W; 5340 m. Accumulation in meters, water equivalent, Estimated error +/- 0.05 m (max) Data have been updated from original 1980 core, in 1981, 1986, 1988 and 2000 Note: Year 1988: data not available as the 2001 core penetrated only partly into 1988 Isotope data: Prior to 1988: Isotope Science Lab: University of Calgary contact: gholdswo@ucalgary.ca After 1988: Quatern. Research Center, Univ. of Washington contact: Credits: 1980 core: G.Holdsworth, M.Maxwell, R. Orvig and F.Fux (drillers); analyses: H.R. Krouse, (isotopes)ISL/Univ of Calgary, KCER/Univ of Calgary; Monenco Analytic Lab, P. Mayewski, S. Whitlow (ions) EOS/UNH. 1981 and 1986 core updates: G.H. and M. Demuth, 1988 update: V. Wasiuta and G.H. 2000 update: H. Samuelsson, S. Bertollo, J.Bellis, M. Wasczkiewcz, M.N.Demuth, E.Ruffa and G.H. Analyses: E. Steig and S. Rupper QRC/University of Washington (isotopes), K. Supeene (NWRI, Saskatoon) (anions). Some of the later data are still being worked on by two groups. Please check with the curator before beginning a study. DATA: Year (AD) Layer density Accum Delta 18O Remarks dz Mg M^-3 (m) per mil 1736 0.57 -28.2 1737 0.34 -32.3 1738 0.44 -32.4 1739 0.42 -31.9 1740 0.28 -31.8 1741 0.38 -28.4 1742 0.21 -28.8 1743 0.33 -33.3 1744 0.30 -34.0 1745 0.21 -30.3 1746 0.21 -29.9 1747 0.41 -28.9 1748 0.31 -24.6 1749 0.30 -27.5 1750 0.40 -28.6 1751 0.20 -32.3 1752 0.24 -33.5 1753 0.22 -34.2 1754 0.28 -32.2 1755 0.34 -31.2 1756 0.23 -32.1 1757 0.21 -30.7 1758 0.26 -30.7 1759 0.19 -32.1 1760 0.29 -32.1 1761 0.18 -32.6 1762 0.27 -30.5 1763 0.27 -30.0 1764 0.37 -32.2 1765 0.27 -28.8 1766 0.27 -28.1 1767 0.26 -29.8 1768 0.30 -33.1 1769 0.49 -35.9 1770 0.35 -32.4 1771 0.31 -31.7 1772 0.24 -31.8 1773 0.39 -30.9 1774 0.34 -32.1 1775 0.25 -28.8 1776 0.49 -32.5 1777 0.49 -31.5 1778 0.32 -33.2 1779 0.32 -35.8 1780 0.40 -27.2 1781 0.32 -30.2 1782 0.32 -31.8 1783 0.39 -31.2 1784 0.31 -29.9 1785 0.31 -30.2 1786 0.31 -29.5 1787 0.18 -30.8 1788 0.27 -34.5 1789 0.29 -34.5 1790 0.15 -34.1 1791 0.29 -33.2 1792 0.15 -33.9 1793 0.29 -30.8 1794 0.21 -28.8 1795 0.43 -28.8 1796 0.36 -28.6 1797 0.35 -33.3 1798 0.24 -29.4 1799 0.46 -31.7 1800 0.20 -31.1 1801 0.41 -30.5 1802 0.41 -30.3 1803 0.27 -34.1 1804 0.27 -30.6 1805 0.27 -32.8 1806 0.26 -27.6 1807 0.26 -27.5 1808 0.26 -25.8 1809 0.26 -33.0 1810 0.36 -31.6 1811 0.16 -32.4 1812 0.38 -31.8 1813 0.26 -28.9 1814 0.25 -31.6 1815 0.47 -31.7 1816 0.27 -33.2 1817 0.22 -29.7 1818 0.37 -32.8 1819 0.27 -34.3 1820 0.18 -31.7 1821 0.28 -25.8 1822 0.32 -30.4 1823 0.23 -30.9 1824 0.19 -31.3 1825 0.40 -29.6 1826 0.64 -31.5 1827 0.58 -30.4 1828 0.31 -32.8 1829 0.38 -31.4 1830 0.38 -30.7 1831 0.24 -24.8 1832 0.39 -31.5 1833 0.44 -30.3 1834 0.44 -33.4 1835 0.33 -31.2 1836 0.39 -30.6 1837 0.48 -26.8 1838 0.28 -31.1 1839 0.35 -29.4 1840 0.23 -29.8 1841 0.40 -33.5 1842 0.29 -32.1 1843 0.24 -31.8 1844 0.29 -29.8 1845 0.26 -29.9 1846 0.34 -30.5 1847 0.37 -30.7 1848 0.43 -30.7 1849 0.23 -28.4 1850 0.40 -32.7 1851 0.24 -32.3 1852 0.27 -32.8 1853 0.44 -36.9 1854 0.44 -34.3 1855 0.30 -34.7 1856 0.56 -32.0 1857 0.59 -32.2 1858 0.40 -28.3 1859 0.51 -30.2 1860 0.56 -31.0 1861 0.25 -34.9 1862 0.23 -33.9 1863 0.36 -32.8 1864 0.17 -35.1 1865 0.25 -33.5 1866 0.12 -33.3 1867 0.20 -32.6 1868 0.33 -36.1 1869 0.65 -31.3 1870 0.48 -34.4 1871 0.56 -31.2 1872 0.33 -33.0 1873 0.27 -31.5 1874 0.55 -32.4 1875 0.42 -32.4 1876 0.27 -33.4 1877 0.24 -31.6 1878 0.42 -33.1 1879 0.27 -33.5 1880 0.19 -31.6 1881 0.46 -37.5 1882 0.33 -33.5 1883 0.38 -33.2 1884 0.16 -32.3 1885 0.15 -30.9 1886 0.18 -31.2 1887 0.25 -32.6 1888 0.16 -37.5 1889 0.41 -31.7 1890 0.63 -32.5 1891 0.42 -32.1 1892 0.53 -35.3 1893 0.53 -32.2 1894 0.20 -27.7 1895 0.20 -31.5 1896 0.41 -33.1 1897 0.49 -32.9 1898 0.28 -33.5 1899 0.40 -32.8 1900 0.64 -32.7 1901 0.52 -33.8 1902 0.38 -33.1 1903 0.60 -31.9 1904 0.54 -31.6 1905 0.35 -36.1 1906 0.48 -32.3 1907 0.39 -31.3 1908 0.34 -32.6 1909 0.29 -34.8 1910 0.31 -32.1 1911 0.43 -33.8 1912 0.53 -32.8 1913 0.46 -33.4 1914 0.38 -34.5 1915 0.42 -34.9 1916 0.76 -33.3 1917 0.54 -36.3 1918 0.43 -35.6 1919 0.33 -35.4 1920 0.75 -33.4 1921 0.63 -30.6 1922 0.45 -33.6 1923 0.39 -34.5 1924 0.34 -37.6 1925 0.27 -35.8 1926 0.35 -32.6 1927 0.47 -33.4 1928 0.21 -33.5 1929 0.31 -33.4 1930 0.21 -35.5 1931 0.26 -33.5 1932 0.46 -29.1 1933 0.23 -33.6 1934 0.34 -34.2 1935 0.47 -34.9 1936 0.27 -38.2 1937 0.34 -34.5 1938 0.36 -33.5 1939 0.30 -35.2 1940 0.26 -35.9 1941 0.35 -32.6 1942 0.32 -33.1 1943 0.37 -34.3 1944 0.32 -34.1 1945 0.40 -34.5 1946 0.26 -31.8 1947 0.30 -34.6 1948 0.33 -33.9 1949 0.50 -31.2 1950 0.43 -34.5 1951 0.30 -28.0 1952 0.42 -29.7 1953 0.38 -34.2 1954 0.47 -33.5 1955 0.38 -28.2 1956 0.32 -31.9 1957 0.37 -35.4 1958 0.69 -33.4 1959 0.45 -35.4 1960 0.53 -31.8 1961 0.57 -32.6 1962 0.43 -36.1 1963 0.55 -33.0 1964 0.30 -34.3 1965 0.46 -33.8 1966 0.30 -35.0 1967 0.24 -31.6 1968 0.49 -34.6 1969 0.41 -31.5 1970 0.15 -26.3 1971 0.20 -27.9 1972 0.29 -32.9 1973 0.52 -28.2 1974 0.42 -35.8 1975 0.27 -34.8 1976 0.39 -34.0 1977 0.21 -34.5 1978 0.40 -31.3 1979 0.38 -32.2 1980 0.39 -31.3 1981 0.68 -25.5 update #1 1982 0.33 -31.2 1983 0.32 -30.7 1984 0.41 -33.5 1985 0.49 -30.5 1986 0.76 -31.1 update #2 1987 0.51 -33.2 1988 update #3 1989 0.65 0.547 0.36 1990 1.10 0.541 0.60 Densities 1991 0.90 0.530 0.48 are 1992 0.70 0.525 0.37 smoothed 1993 1.05 0.519 0.54 values 1994 1.35 0.510 0.69 1995 0.90 0.499 0.45 1996 1.15 0.490 0.56 1997 1.25 0.472 0.59 1998 1.25 0.460 0.58 1999 1.70 0.430 0.73 2000 1.85 0.380 0.70 update #4