# East Greenland Ice Core normalized oxygen isotope stack #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite original reference when using these data, # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed # # # # Online_Resource: # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24611 # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice Cores # -------------------- # Contribution_date # Date: 2015 # -------------------- # Title # Study_Name: East Greenland Ice Core normalized oxygen isotope stack # # -------------------- # Investigators # Investigators: Fisher, D.A.; Koerner, R.M.; Reeh, N. # -------------------- # Description_and_Notes # Description: # # -------------------- # Publication # Authors: David A. Fisher, Roy M. Koerner, Niels Reeh # Published_Date_or_Year: 1995-03 # Published_Title: Holocene climatic records from Agassiz Ice Cap, Ellesmere Island, NWT, Canada # Journal_Name: The Holocene # Volume: 5 # Edition: # Issue: 1 # Pages: 19-24 # DOI: 10.1177/095968369500500103 # Online_Resource: # Full_Citation: # Abstract: Four ice cores from the top of the Agassiz Ice Cap and down a flow line have been variously analysed for 8 (18O), ECM (solid conductivity) and ice-melt layer stratigraphy. Stratigraphic correlation of volcanic horizons is used to date the last 8000 years of the cores. The timescales at the Wisconsin/ Holocene transition are pinned at the new GRIP ice-core date. Both 8 and summer-melt records from cores A84 and A87 imply summer temperatures have decreased from 8000 BP to the present by about 2.0 degrees C. Differences in the various 8 series are explained in terms of local drift noise, excessive summer melt and ice flow originating from higher up the local dome where winter snow is scoured away. The present accumulation pattern along the flow line allows one to explain the smoothed differences in the delta records from 8000 BP to the present, but the massive summer melting between 8000 BP and the transition seems to have significantly altered the site and possibly introduced discontinuities. The massive summer melting in the early Holocene alters the volcanic acid (ECM) record in all the cores. # -------------------- # Authors: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G.J., Noone, D., Perkins, W.A., and E. Steig # Published_Date_or_Year: 2018 # Published_Title: Additions to the last millennium reanalysis multi-proxy database # Journal_Name: Data Science Journal # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G., J., Noone, D., Perkins, W.A., and E. Steig, submitted. Additions to the last millennium reanalysis multi-proxy database. Data Science Journal. # Abstract: Progress in paleoclimatology increasingly occurs via data syntheses. We describe additions to a collection prepared for use in paleoclimate state estimation, specifically the Last Millennium Reanalysis (LMR). The 2290 additional series include 2152 tree ring chronologies and 138 other series. They supplement the collection used previously and together form a database titled LMRdb 1.0.0. The additional data draws from lake core, ice core, coral, speleothem, and tree ring archives, using published data primarily from the NOAA Paleoclimatology archive and a set of tree ring width chronologies standardized from raw International Tree Ring Data Bank ring width series. In contrast to many previous paleo compilations, the data were not selected (screened) on the basis of their environmental correlation, multi-century length, or other attributes. The inclusion of proxies sensitive to moisture and other environmental variables expands their use in data assimilation. A preliminary calibration using linear regression with mean annual temperature reveals characteristics of the proxy series and their relationship to temperature, as well as the noise and error characteristics of the records. The additional records are structured as individual files in the NOAA Paleoclimatology format and archived at NOAA Paleoclimatology (Anderson et al. 2018) and will continue to be improved and expanded as part of the LMR Project. The additions represent a four-fold increase in the number of records available for assimilation, provide expanded geographic coverage, and add additional proxy variables. Applications include data assimilation, proxy system model development, and paleoclimate reconstruction using climate field reconstruction and other methods. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: # -------------------- # Funding_Agency_Name: National Science Foundation # Grant:AGS-1304263 # Funding_Agency_Name: National Oceanic and Atmospheric Administration # Grant:NA14OAR4310176 #------------------ # Site_Information # Site_Name: East Greenland # Location: North America>Greenland # Country: Greenland # Northernmost_Latitude: 73.00 # Southernmost_Latitude: 73.00 # Easternmost_Longitude: -34.00 # Westernmost_Longitude: -34.00 # Elevation: 2350 m # -------------------- # Data_Collection # Collection_Name: 95Agas04 # Earliest_Year: 1777 # Most_Recent_Year: 1983 # Time_Unit: y_ad # Notes: {"database":"LMR"} # # -------------------- # Variables # # Data variables follow that are preceded by "##" in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##age age,,,years AD,,,,,N ##d18O delta 18 oxygen anomaly,,,permil SMOW,,Ice Cores,,,N # # -------------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing variables: NAN # age d18O 1983 -0.041 1982 0.442 1981 -0.076 1980 0.217 1979 -0.626 1978 1.326 1977 1.981 1976 1.597 1975 0.789 1974 -0.019 1973 0.385 1972 -0.105 1971 1.023 1970 1.269 1969 1.458 1968 -0.623 1967 -0.729 1966 -0.098 1965 0.511 1964 0.707 1963 0.144 1962 -0.347 1961 0.273 1960 0.834 1959 1.086 1958 -2.267 1957 -2.461 1956 -0.95 1955 -2.067 1954 -1.452 1953 0.838 1952 -0.363 1951 -0.88 1950 0.363 1949 -1.474 1948 -0.156 1947 1.887 1946 1.21 1945 0.781 1944 -0.135 1943 -1.15 1942 0.001 1941 1.649 1940 1.482 1939 1.469 1938 0.386 1937 -0.4 1936 0.392 1935 0.567 1934 2.214 1933 0.754 1932 0.86 1931 0.493 1930 0.638 1929 0.693 1928 0.202 1927 0.805 1926 0.202 1925 0.229 1924 -1.346 1923 -0.638 1922 -0.125 1921 -1.087 1920 0.061 1919 -0.696 1918 -0.44 1917 -0.473 1916 1.991 1915 -1.575 1914 -0.988 1913 0.005 1912 0.331 1911 0.866 1910 -0.74 1909 -0.726 1908 1.126 1907 -1.226 1906 -1.393 1905 -0.833 1904 -0.806 1903 -1.093 1902 0.53 1901 1.584 1900 -0.643 1899 -0.353 1898 -0.031 1897 0.219 1896 1.07 1895 1.211 1894 0.406 1893 1.124 1892 -0.532 1891 -0.762 1890 -0.77 1889 0.215 1888 0.046 1887 -1.022 1886 -0.15 1885 1.032 1884 0.966 1883 0.599 1882 -0.096 1881 0.401 1880 0.578 1879 -0.348 1878 0.078 1877 -0.778 1876 0.085 1875 0.533 1874 -0.615 1873 -0.524 1872 0.741 1871 1.085 1870 0.563 1869 -0.085 1868 0.091 1867 0.337 1866 -0.033 1865 0.338 1864 -0.414 1863 -1.551 1862 0.084 1861 -0.105 1860 -0.442 1859 -0.143 1858 0.122 1857 -0.341 1856 -0.002 1855 0.493 1854 -0.902 1853 0.271 1852 0.622 1851 0.42 1850 0.205 1849 -0.751 1848 -0.644 1847 1.385 1846 0.423 1845 -0.223 1844 -0.943 1843 -0.828 1842 0.007 1841 -0.146 1840 -0.373 1839 -0.446 1838 0.169 1837 -0.4 1836 -1.594 1835 -1.427 1834 0.007 1833 -0.355 1832 -0.869 1831 -0.68 1830 -0.221 1829 0.058 1828 -0.387 1827 0.466 1826 -0.168 1825 1.392 1824 -0.324 1823 -0.132 1822 -0.335 1821 0.521 1820 0.593 1819 -0.218 1818 -0.838 1817 -1.449 1816 -0.613 1815 0.559 1814 -0.426 1813 -0.52 1812 0.063 1811 0.489 1810 0.297 1809 1.354 1808 1.388 1807 0.639 1806 -0.604 1805 0.142 1804 0.354 1803 -1.639 1802 -2.077 1801 -0.511 1800 0.74 1799 -0.55 1798 -0.734 1797 -0.33 1796 -0.453 1795 0.232 1794 0.05 1793 -0.639 1792 0.725 1791 -0.089 1790 -0.774 1789 0.637 1788 0.327 1787 0.211 1786 1.565 1785 0.992 1784 0.208 1783 -0.221 1782 0.052 1781 0.183 1780 0.438 1779 -1.362 1778 -1.544 1777 -1.168