# West Antarctic Ice Core 01-3 20th Century Stable Isotope Data #----------------------------------------------------------------------- # 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: https://www.ncdc.noaa.gov/cdo/f?p=519:1:::::P1_STUDY_ID:6182 # # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24611 # # Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/west-antarctic-iso2008.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice Cores # -------------------- # Contribution_date # Date: 2008 # -------------------- # Title # Study_Name: West Antarctic Ice Core 01-3 20th Century Stable Isotope Data # -------------------- # Investigators # Investigators: Schneider, D.P; Steig, E.J. # -------------------- # Description_and_Notes # Description: Water stable isotope data from high-resolution ice cores from the West Antarctic Ice Sheet. The record is representative of West Antarctic surface temperature. # # Table 1. Summary information for ice core sites. # # Site Name Lat(°N) Lon(°E) Elev(m) Type End yr # Dyer Plateau -70.66 -64.5 2002 d18O 1989 # Siple Station -75.92 -84.15 1054 d18O 1983 # 01-5 ITASE -77.06 -89.14 1239 d18O 1999 # 00-5 ITASE -77.68 -123.99 1828 dD 1999 # 01-2 ITASE -77.84 -102.91 1336 d18O 1999 # 01-3 ITASE -78.12 -95.65 1620 dD 1999 # 00-1 ITASE -79.38 -111.23 1791 dD 1999 # Siple Dome A -81.65 -148.81 615 dD 1993 # -------------------- # Publication # Authors: D.P. Schneider, E.J. Steig # Published_Date_or_Year: 2008-08-12 # Published_Title: Ice cores record significant 1940s Antarctic warmth related to tropical climate variability # Journal_Name: # Volume: # Edition: # Issue: # Pages: # DOI: 10.1073/pnas.0803627105 # Online_Resource: # Full_Citation: # Abstract: Although the 20th Century warming of global climate is well known, climate change in the high-latitude Southern Hemisphere (SH), especially in the first half of the century, remains poorly documented. We present a composite of water stable isotope data from high-resolution ice cores from the West Antarctic Ice Sheet. This record, representative of West Antarctic surface temperature, shows extreme positive anomalies in the 1936–45 decade that are significant in the context of the background 20th Century warming trend. We interpret these anomalies - previously undocumented in the high-latitude SH - as indicative of strong teleconnections in part driven by the major 1939–42 El Niño. These anomalies are coherent with tropical sea-surface temperature, mean SH air temperature, and North Pacific sea-level pressure, underscoring the sensitivity of West Antarctica's climate, and potentially its ice sheet, to large-scale changes in the global climate.ith phase variation of <1 month. Dating precision and accuracy are uniform with depth, for at least the last 100 years. # -------------------- # 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: United States National Science Foundation, Office of Polar Programs # Funding_Agency # Funding_Agency_Name: National Center for Atmospheric Research # # -------------------- # Funding_Agency_Name: National Science Foundation # Grant:AGS-1304263 # Funding_Agency_Name: National Oceanic and Atmospheric Administration # Grant:NA14OAR4310176 #------------------ # Site_Information # Site_Name: US ITASE 01-3 # Location: Antarctica # Country: # Northernmost_Latitude: -78.120 # Southernmost_Latitude: -78.120 # Easternmost_Longitude: 95.650 # Westernmost_Longitude: 95.650 # Elevation: 1620 m # -------------------- # Data_Collection # Collection_Name: 08ITAS03 # Earliest_Year: 1900 # Most_Recent_Year: 1999 # 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 ##delD delta deuterium,,,permil SMOW,,Ice Cores,,,N # # -------------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing values: NAN # age delD 1999 -244.56 1998 -245.656 1997 -248.272 1996 -255.838 1995 -243.198 1994 -248.771 1993 -248.593 1992 -243.89 1991 -250.731 1990 -262.906 1989 -263.612 1988 -244.768 1987 -252.933 1986 -247.19 1985 -260.861 1984 -259.319 1983 -244.644 1982 -266.378 1981 -254.392 1980 -253.949 1979 -245.059 1978 -249.788 1977 -250.9 1976 -259.192 1975 -260.708 1974 -255.541 1973 -256.825 1972 -257.845 1971 -268.629 1970 -245.169 1969 -265.013 1968 -247.729 1967 -249.513 1966 -251.577 1965 -254.44 1964 -258.416 1963 -258.891 1962 -255.327 1961 -249.749 1960 -240.063 1959 -259.092 1958 -258.964 1957 -262.626 1956 -253.095 1955 -256.234 1954 -264.463 1953 -255.583 1952 -259.746 1951 -258.646 1950 -249.265 1949 -250.391 1948 -259.973 1947 -257.87 1946 -245.914 1945 -242.694 1944 -238.081 1943 -272.303 1942 -269.147 1941 -241.431 1940 -235.005 1939 -252.562 1938 -241.824 1937 -257.314 1936 -266.742 1935 -252.982 1934 -261.019 1933 -250.622 1932 -250.427 1931 -254.967 1930 -241.804 1929 -261.552 1928 -264.158 1927 -242.366 1926 -252.287 1925 -242.914 1924 -252.212 1923 -257.302 1922 -253.582 1921 -245.033 1920 -244.613 1919 -254.823 1918 -255.475 1917 -256.532 1916 -255.837 1915 -255.566 1914 -254.326 1913 -264.048 1912 -244.731 1911 -255.772 1910 -251.602 1909 -253.61 1908 -253.277 1907 -258.316 1906 -278.355 1905 -277.763 1904 -255.016 1903 -259.989 1902 -253.194 1901 -252.701 1900 -249.29