# 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/bruce2016accum.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: Bruce2016Accum # 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 ## accum annual net accumulation, firn/ice, , meters of water equivalent, , ice cores, , annual counting by (MSA),N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # age_AD accum 2009 2.5128 2008 3.2969 2007 2.0502 2006 3.2385 2005 2.1997 2004 2.6589 2003 3.1654 2002 2.0236 2001 3.1246 2000 2.8226 1999 2.9444 1998 2.8317 1997 1.5266 1996 2.6874 1995 2.6731 1994 2.4723 1993 2.6322 1992 2.7425 1991 1.6969 1990 1.8770 1989 2.9642 1988 2.1360 1987 1.5428 1986 1.9067 1985 2.2733 1984 2.3021 1983 2.4479 1982 2.0223 1981 1.8702 1980 1.4980 1979 2.2498 1978 2.1376 1977 1.8354 1976 1.3718 1975 1.5815 1974 2.0460 1973 2.0057 1972 1.6076 1971 1.7162 1970 1.7483 1969 1.1415 1968 2.1945 1967 1.3785 1966 1.3311 1965 1.5870 1964 2.4148 1963 1.4931 1962 2.0572 1961 1.6830 1960 2.2090 1959 1.2415 1958 1.6161 1957 1.4553 1956 2.5011 1955 2.1726 1954 1.8080 1953 1.5607 1952 1.9932 1951 1.7511 1950 1.8158 1949 1.3641 1948 1.3913 1947 1.6535 1946 1.7285 1945 0.9905 1944 1.2351 1943 2.9407 1942 1.1131 1941 1.1222 1940 1.1134 1939 1.1238 1938 1.3134 1937 1.4912 1936 1.8337 1935 0.8222 1934 2.0060 1933 1.4964 1932 1.1653 1931 1.9858 1930 1.3325 1929 1.6494 1928 1.3309 1927 1.1716 1926 1.2967 1925 1.6211 1924 1.6876 1923 1.3835 1922 1.9554 1921 1.9349 1920 1.4106 1919 1.7995 1918 1.7512 1917 2.1125 1916 1.5637 1915 1.2012 1914 2.0401 1913 1.0171 1912 1.2203 1911 1.7051 1910 1.6348 1909 1.1152 1908 1.7001 1907 2.2888 1906 1.3831 1905 1.4304 1904 1.9552 1903 1.5646 1902 2.0273 1901 1.1279 1900 1.7144