# South Pole Late Twentieth Century Deuterium Isotope Data #----------------------------------------------------------------------- # 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/21790 # Online_Resource: http://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/southpole2015dd.txt # # Original_Source_URL: # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Ice Core # # Parameter_Keywords: hydrogen isotopes #-------------------- # Contribution_Date # Date: 2017-03-29 #-------------------- # Title # Study_Name: South Pole Late Twentieth Century Deuterium Isotope Data #-------------------- # Investigators # Investigators: Turney, C.S.M.; Fogwill, C.J.; Klekociuk, A.R.; van Ommen, T.D.; Curran, M.A.J.; Moy, A.D.; Palmer, J.G. #-------------------- # Description_and_Notes # Description: Late twentieth century isotope (deuterium) record from geographic South Pole. Extension of record # reported by Jouzel et al., 1983 (Journal of Geophysical Research 88, 2693-2703). # Provided Keywords: South Pole, climate, tropical-high latitude teleconnections, El Nino-Southern Oscillation (ENSO) #-------------------- # Publication # Authors: C.S.M. Turney, C.J. Fogwill, A.R. Klekociuk, T.D. van Ommen, M.A.J. Curran, A.D. Moy, and J.G. Palmer # Published_Date_or_Year: 2015-12-15 # Published_Title: Tropical and mid-latitude forcing of continental Antarctic temperatures # Journal_Name: The Cryosphere # Volume: 9 # Edition: # Issue: 6 # Pages: 2405-2415 # Report_Number: # DOI: 10.5194/tc-9-2405-2015 # Online_Resource: http://www.the-cryosphere.net/9/2405/2015/ # Full_Citation: # Abstract: Future changes in atmospheric circulation and associated modes of variability are a major source of uncertainty in climate projections. Nowhere is this issue more acute than across the mid-latitudes to high latitudes of the Southern Hemisphere (SH), which over the last few decades have experienced extreme and regionally variable trends in precipitation, ocean circulation and temperature, with major implications for Antarctic ice melt and surface mass balance. Unfortunately there is a relative dearth of observational data, limiting our understanding of the driving mechanism(s). Here we report a new 130-year annually resolved record of dD - a proxy for temperature - from the geographic South Pole where we find a significant influence from extratropical pressure anomalies which act as "gatekeepers" to the meridional exchange of air masses. Reanalysis of global atmospheric circulation suggests these pressure anomalies play a significant influence on mid- to high-latitude SH climate, modulated by the tropical Pacific Ocean. This work adds to a growing body of literature confirming the important roles of tropical and mid-latitude atmospheric circulation variability on Antarctic temperatures. Our findings suggest that future increasing tropical warmth will strengthen meridional circulation, exaggerating current trends, with potentially significant impacts on Antarctic surface mass balance. #------------------ # Funding_Agency # Funding_Agency_Name: Australian Research Council # Grant: FL100100195, LP120200724, DP130104156, FT120100004 #------------------ # Site_Information # Site_Name: South Pole # Location: Antarctica # Country: # Northernmost_Latitude: -90 # Southernmost_Latitude: -90 # Easternmost_Longitude: 0 # Westernmost_Longitude: 0 # Elevation: m #------------------ # Data_Collection # Collection_Name: SPp1112dD2015 # Earliest_Year: 1977 # Most_Recent_Year: 2012 # Time_Unit: AD # Core_Length: 6.75 m # Notes: #------------------ # Chronology_Information # Chronology: Annual peaks (summer) in dD used to derive chronology # # Depth, m Calendar year Description # 0 2012 Sampled 1 January 2012 # 4.1575 1992–1993 Record of 1991 Mount Pinatubo and Cerro Hudson eruptions at South Pole # #---------------- # 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_CE age, , , years CE, , , , ,N ## d2Hice delta 2H, ice, , per mil SMOW, , ice cores, , ,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: # age_CE d2Hice 1977 -383.88 1978 -401.59 1979 -415.80 1980 -416.82 1981 -407.07 1982 -409.26 1983 -389.02 1984 -395.88 1985 -390.72 1986 -395.72 1987 -397.75 1988 -399.30 1989 -371.18 1990 -374.82 1991 -376.09 1992 -392.35 1993 -398.42 1994 -399.97 1995 -384.25 1996 -392.97 1997 -400.08 1998 -412.41 1999 -399.14 2000 -383.51 2001 -377.24 2002 -397.23 2003 -397.73 2004 -375.32 2005 -405.55 2006 -393.56 2007 -391.78 2008 -401.18 2009 -392.93 2010 -409.47 2011 -388.98 2012 -379.02