Bering Sea 117 Year Coralline Algae Oxygen Isotope Data ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: Please cite original reference when using these data, plus the data file URL and date accessed. NAME OF DATA SET: Bering Sea 117 Year Coralline Algae Oxygen Isotope Data LAST UPDATE: 5/2012 (Original receipt by WDC Paleo) CONTRIBUTORS: Halfar, J., R. Steneck, B. Schöne, G.W.K. Moore, M. Joachimski, A. Kronz, J. Fietzke, and J. Estes. IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2012-065 WDC PALEO CONTRIBUTION SERIES CITATION: Halfar, J., et al. 2012. Bering Sea 117 Year Coralline Algae Oxygen Isotope Data. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2012-065. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Halfar, J., R. Steneck, B. Schöne, G.W.K. Moore, M. Joachimski, A. Kronz, J. Fietzke, and J. Estes. 2007. Coralline alga reveals first marine record of subarctic North Pacific climate change. Geophys. Res. Lett., 34, L07702, doi:10.1029/2006GL028811. ABSTRACT: While recent changes in subarctic North Pacific climate had dramatic effects on ecosystems and fishery yields, past climate dynamics and teleconnection patterns are poorly understood due to the absence of century-long high-resolution marine records. We present the first 117-year long annually resolved marine climate history from the western Bering Sea/Aleutian Island region using information contained in the calcitic skeleton of the long-lived crustose coralline red alga Clathromorphum nereostratum, a previously unused climate archive. The skeletal d18O-time series indicates significant warming and/or freshening of surface waters after the middle of the 20th century. Furthermore, the time series is spatiotemporally correlated with Pacific Decadal Oscillation (PDO) and tropical El Niño-Southern Oscillation (ENSO) indices. Even though the western Bering Sea/ Aleutian Island region is believed to be outside the area of significant marine response to ENSO, we propose that an ENSO signal is transmitted via the Alaskan Stream from the Eastern North Pacific, a region of known ENSO teleconnections. GEOGRAPHIC REGION: North Pacific PERIOD OF RECORD: 1886 - 2003 AD FUNDING SOURCES: Deutsche Forschungsgemeinschaft (HA3238/2-1/2). DATA FILE URLS: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/halfar2007/halfar2007.txt ftp://ftp.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/halfar2007/halfar2007.xls DESCRIPTION: 117 year oxygen isotope record of the coralline alga Clathromorphum nereostratum, collected off Attu Island in the western Aleutian Islands. C. nereostratum is a long-lived, shallow-marine crustose coralline algae. Attu Island: 52°47'N, 173°10'E DATA: Halfar et al. 2007 Attu Island Coralline Algae d18O data Date d18O (normalized) 2003 -0.7 2002 0.87 2001 1.65 2000 0.58 1999 0.41 1998 -0.29 1997 1.17 1996 -1.59 1995 0.99 1994 -1.37 1993 -2.11 1992 -0.57 1991 -0.95 1990 -1.24 1989 -2.99 1988 0.72 1987 0.44 1986 -0.86 1985 0.29 1984 -0.44 1983 1.27 1982 -0.51 1981 -1.32 1980 -0.28 1979 -1.47 1978 -0.1 1977 0.35 1976 0.68 1975 0.89 1974 -0.9 1973 -0.54 1972 0.14 1971 0.7 1970 0.08 1969 0.48 1968 1.02 1967 2.28 1966 0.94 1965 0.74 1964 2.51 1963 -0.29 1962 -0.21 1961 -0.31 1960 0.49 1959 0.72 1958 -1.24 1957 -1.15 1956 0.63 1955 -0.71 1954 1.29 1953 -0.65 1952 0.54 1951 -0.6 1950 1.85 1949 0.48 1948 1.15 1947 -1.15 1946 -0.46 1945 -0.16 1944 -0.14 1943 -0.44 1942 0.8 1941 -0.74 1940 0.34 1939 2.17 1938 -1.3 1937 -0.87 1936 -1.73 1935 -2.35 1934 -1.43 1933 -0.03 1932 -0.24 1931 -0.04 1930 -0.05 1929 -0.08 1928 0.12 1927 0.18 1926 -1.02 1925 -0.56 1924 1.17 1923 0.86 1922 2.55 1921 1.52 1920 2.57 1919 0.46 1918 0.22 1917 0.02 1916 -0.08 1915 0.54 1914 -0.25 1913 -0.55 1912 0.34 1911 -0.03 1910 0.47 1909 0.39 1908 -0.5 1907 0.31 1906 -1.46 1905 -1.32 1904 -0.5 1903 0.65 1902 -0.44 1901 -0.11 1900 0.79 1899 0.38 1898 -0.81 1897 -0.6 1896 -1.14 1895 -0.75 1894 0.94 1893 -0.07 1892 0.71 1891 0.23 1890 0.44 1889 -0.73 1888 0.22 1887 0.06 1886 0.24