noaa-icecore-21790 South Pole Late Twentieth Century Deuterium Isotope Data Turney, C.S.M.; Fogwill, C.; Klekociuk, A.; van Ommen, T.D.; Curran, M.A.J.; Moy, A.D.; Palmer, J.G. South Pole Late Twentieth Century Deuterium Isotope Data 2017-03-29 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/21790 Investigator C.S.M. Turney Investigator C. Fogwill Investigator A. Klekociuk Investigator T.D. van Ommen Investigator M.A.J. Curran Investigator A.D. Moy Investigator J.G. Palmer earth science paleoclimate ice cores age,null,null,year Common Era,null,ice cores,null,null,N,null earth science paleoclimate ice cores delta 2H,bulk ice,null,per mil SMOW,null,ice cores,null,null,N,null earth science paleoclimate ice core hydrogen isotopes geoscientificInformation ENSO 1977 AD 2012 AD -27 cal yr BP -62 cal yr BP Complete -90 -90 0 0 Continent Antarctica South Pole>LATITUDE -90>LONGITUDE 0 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII 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 2015 The Cryosphere 9 6 2405-2415 10.5194/tc-9-2405-2015 http://www.the-cryosphere.net/9/2405/2015/

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. STUDY NOTES: 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)

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/southpole2015dd.txt Formatted Text Data File; South Pole Late Twentieth Century Deuterium Isotope Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11