# Bruce Plateau, Antarctic Peninsula 100yr Ice Core d18O and Accumulation #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 2.0 # NOTE: Please cite Publication, and Online_Resource and date accessed 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/paleo/study/20350 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/bruce/bruce2016d18o.txt # # Original_Source_URL: http://research.bpcrc.osu.edu/Icecore/data/ # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice Cores # # Parameter_Keywords: oxygen isotopes, accumulation #-------------------- # Contribution_Date # Date: 2016-07-22 #-------------------- # Title # Study_Name: Bruce Plateau, Antarctic Peninsula 100yr Ice Core d18O and Accumulation #-------------------- # Investigators # Investigators: Goodwin, B.P.; Mosley-Thompson, E.; Wilson, A.B.; Porter, S.E.; Sierra-Hernandez, M.R. #-------------------- # Description_and_Notes # Description: Antarctic Peninsula oxygen isotope (d18O) and accumulation rate data from an ice core drilled on Bruce Plateau. # Thinning function applied: Dansgaard - Johnsen, 1969. Upstream glaciology condition from surface GPS survey (limited). # Upstream glaciology influence on the SMB stratigraphy is likely minor - surface slope is low. # #-------------------- # Publication # Authors: Bradley P. Goodwin, Ellen Mosley-Thompson, Aaron B. Wilson, Stacy E. Porter, M. Roxana Sierra-Hernandez # Published_Date_or_Year: 2016-04-01 # Published_Title: Accumulation Variability in the Antarctic Peninsula: The Role of Large-Scale Atmospheric Oscillations and Their Interactions # Journal_Name: Journal of Climate # Volume: 29 # Edition: # Issue: 7 # Pages: 2579-2596 # Report_Number: # DOI: 10.1175/JCLI-D-15-0354.1 # Online_Resource: http://journals.ametsoc.org/doi/full/10.1175/JCLI-D-15-0354.1 # Full_Citation: # Abstract: A new ice core drilled in 2010 to bedrock from the Bruce Plateau (BP) on the Antarctic Peninsula (AP) provides a high temporal resolution record of environmental conditions in this region. The extremely high annual accumulation rate at this site facilitates analysis of the relationships between annual net accumulation An on the BP and large-scale atmospheric oscillations. Over the last ~45 years, An on the BP has been positively correlated with both the southern annular mode (SAM) and Southern Oscillation index (SOI). Extending this analysis back to 1900 reveals that these relationships are not temporally stable, and they exhibit major shifts in the late-1940s and the mid-1970s that are contemporaneous with phase changes in the Pacific decadal oscillation (PDO). These varying multidecadal characteristics of the An-oscillation relationships are not apparent when only data from the post-1970s era are employed. Analysis of the longer ice core record reveals that the influence of the SAM on An depends not only on the phase of the SAM and SOI but also on the phase of the PDO. When the SAM's influence on BP An is reduced, such as under negative PDO conditions, BP An is modulated by variability in the tropical and subtropical atmosphere through its impacts on the strength and position of the circumpolar westerlies in the AP region. These results demonstrate the importance of using longer-term ice core-derived proxy records to test conventional views of atmospheric circulation variability in the AP region. #------------------ # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: ANT-0732655 #------------------ # Site_Information # Site_Name: Bruce Plateau # Location: Antarctica # Country: # Northernmost_Latitude: -66.038 # Southernmost_Latitude: -66.038 # Easternmost_Longitude: -64.078 # Westernmost_Longitude: -64.078 # Elevation: 1975.5 m #------------------ # Data_Collection # Collection_Name: Bruce2016d18O # Earliest_Year: 1900 # Most_Recent_Year: 2009 # Time_Unit: AD # Core_Length: 448.12 m # Notes: #------------------ # Chronology_Information # Chronology: # annual counting by (MSA) #---------------- # Variables # # Data variables follow 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_AD age, , , AD, , , , ,N ## d18O delta18O, firn/ice, , per mil, annual average,ice cores, , Cavity Ring-Down Spectroscopy (Picarro),N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # age_AD d18O 2009 -18.5112 2008 -18.5783 2007 -19.7035 2006 -18.4039 2005 -18.0582 2004 -18.8276 2003 -19.2959 2002 -20.0882 2001 -18.5204 2000 -18.1729 1999 -18.8057 1998 -18.6890 1997 -20.4655 1996 -20.1046 1995 -18.2610 1994 -20.2103 1993 -18.9123 1992 -18.0297 1991 -19.8831 1990 -20.3291 1989 -18.3735 1988 -18.4648 1987 -19.7307 1986 -20.9069 1985 -18.5037 1984 -19.2693 1983 -18.6625 1982 -19.2833 1981 -19.4138 1980 -20.0780 1979 -18.9430 1978 -19.6668 1977 -20.0779 1976 -21.2858 1975 -20.2578 1974 -18.5559 1973 -21.0046 1972 -20.1891 1971 -19.8709 1970 -18.6252 1969 -21.6947 1968 -20.5196 1967 -20.7847 1966 -19.0484 1965 -19.2851 1964 -19.1110 1963 -20.1703 1962 -19.1524 1961 -19.9816 1960 -18.3137 1959 -20.0597 1958 -20.6277 1957 -19.0258 1956 -19.3009 1955 -18.5493 1954 -19.5463 1953 -20.9675 1952 -20.0081 1951 -18.3369 1950 -19.7747 1949 -20.5213 1948 -20.0212 1947 -20.2094 1946 -20.2703 1945 -19.0410 1944 -19.9263 1943 -18.2623 1942 -19.1014 1941 -20.7827 1940 -21.2304 1939 -20.5435 1938 -20.6309 1937 -18.6637 1936 -19.8209 1935 -20.2479 1934 -19.5344 1933 -21.3051 1932 -20.3487 1931 -18.2964 1930 -19.8941 1929 -19.7769 1928 -20.5641 1927 -19.5678 1926 -20.7172 1925 -19.9285 1924 -20.3748 1923 -19.5905 1922 -17.8057 1921 -19.1132 1920 -20.8688 1919 -19.4288 1918 -20.1743 1917 -18.7480 1916 -20.3057 1915 -20.4199 1914 -19.5684 1913 -20.4519 1912 -20.1079 1911 -19.0925 1910 -19.2387 1909 -18.5415 1908 -19.7230 1907 -19.7952 1906 -20.0620 1905 -20.2823 1904 -20.0570 1903 -19.5967 1902 -19.6998 1901 -20.0100 1900 -18.3327