# Prince of Wales, Ellesmere Island 1,850 Year Ice Core d18O Data #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program # National Centers for Environmental Information (NCEI) #----------------------------------------------------------------------- # Template Version 3.0 # Encoding: UTF-8 # 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/22542 # Description: NOAA Landing Page # Online_Resource: https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/ellesmere/prince-of-wales2011d18o.txt # Description: NOAA location of the template # # Original_Source_URL: https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/pages2k-temperature-v2-2017/data-version-2.0.0/Arc-PrinceOfWales.Kinnard.2011.txt # Description: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice Cores # # Dataset DOI: # # Parameter_Keywords: oxygen isotopes #-------------------- # Contribution_Date # Date: 2017-05-19 #-------------------- # File_Last_Modified_Date # Date: 2017-05-19 #-------------------- # Title # Study_Name: Prince of Wales, Ellesmere Island 1,850 Year Ice Core d18O Data #-------------------- # Investigators # Investigators: Kinnard, C.; Zdanowicz, C.M.; Fisher, D.A.; Isaksson, E.; de Vernal, A.; Thompson, L.G. #------------------ # Description_Notes_and_Keywords # Description: Ice core oxygen isotope (d18O) data from Prince of Wales, Ellesmere Island, Arctic Canada for the past 1,850 years. # Original d18O record was interpolated to 1yr sampling interval using the constructed ice core chronology. #------------------ # Publication # Authors: Christophe Kinnard, Christian M. Zdanowicz, David A. Fisher, Elisabeth Isaksson, Anne de Vernal, Lonnie G. Thompson # Published_Date_or_Year: 2011-11-24 # Published_Title: Reconstructed changes in Arctic sea ice over the past 1,450 years # Journal_Name: Nature # Volume: 479 # Edition: # Issue: 7374 # Pages: 509-512 # Report: # DOI: 10.1038/nature10581 # Online_Resource: http://www.nature.com/nature/journal/v479/n7374/full/nature10581.html # Full_Citation: # Abstract: Arctic sea ice extent is now more than two million square kilometres less than it was in the late twentieth century, with important consequences for the climate, the ocean and traditional lifestyles in the Arctic. Although observations show a more or less continuous decline for the past four or five decades, there are few long-term records with which to assess natural sea ice variability. Until now, the question of whether or not current trends are potentially anomalous has therefore remained unanswerable. Here we use a network of high-resolution terrestrial proxies from the circum-Arctic region to reconstruct past extents of summer sea ice, and show that - although extensive uncertainties remain, especially before the sixteenth century - both the duration and magnitude of the current decline in sea ice seem to be unprecedented for the past 1,450 years. Enhanced advection of warm Atlantic water to the Arctic seems to be the main factor driving the decline of sea ice extent on multidecadal timescales, and may result from nonlinear feedbacks between sea ice and the Atlantic meridional overturning circulation. These results reinforce the assertion that sea ice is an active component of Arctic climate variability and that the recent decrease in summer Arctic sea ice is consistent with anthropogenically forced warming. #------------------ # Funding_Agency # Funding_Agency_Name: Canadian Foundation for Climate and Atmospheric Sciences (Polar Climate Stability Network) # Grant: #------------------ # Funding_Agency # Funding_Agency_Name: Natural Sciences and Engineering Research Council of Canada # Grant: #------------------ # Site_Information # Site_Name: Prince-of-Wales, Ellesmere Island # Location: North America>Canada>Nunavut # Country: Canada # Northernmost_Latitude: 78.4 # Southernmost_Latitude: 78.4 # Easternmost_Longitude: -80.4 # Westernmost_Longitude: -80.4 # Elevation: 2030 m #------------------ # Data_Collection # Collection_Name: Prince-of-Wales2011d18O # Earliest_Year: 151 # Most_Recent_Year: 1995 # Time_Unit: AD # Core_Length: # Notes: #------------------ # Chronology: # Chronology: #------------------ # 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 ( 10 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data, additional_information) # ## age_CE age, , , year CE, , , , ,N, ## d18O delta 18O, ice, , per mil, annual, ice core, , isotope ratio mass spectrometry,N, # #------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header) # Missing_Values: # age_CE d18O 1995 -25.4284 1994 -25.3655 1993 -25.3027 1992 -25.2398 1991 -25.1770 1990 -24.9112 1989 -24.6455 1988 -24.3797 1987 -24.1140 1986 -23.8482 1985 -23.8690 1984 -23.8897 1983 -23.9105 1982 -23.9312 1981 -23.9520 1980 -24.1326 1979 -24.3131 1978 -24.4937 1977 -24.6742 1976 -24.8548 1975 -25.1059 1974 -25.3571 1973 -25.6083 1972 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