Dome Fuji 360KYr Stable Isotope Data and Temperature Reconstruction Uemura, R.; Masson-Delmotte, V.; Jouzel, J.; Landais, A.; Motoyama, H.; Stenni, B. Uemura, R. Masson-Delmotte, V. Jouzel, J. Landais, A. Motoyama, H. Stenni, B. Air Temperature Reconstruction earth science/paleoclimate/ice cores (delta 18O,bulk ice,null,per mil VSMOW,null,ice cores,null,null,N,null) earth science/paleoclimate/climate reconstructions|ice cores (surface temperature,null,null,degree Celsius,null,climate reconstructions|ice cores,anomalized,null,N,"anomalized from present, temperature at site") earth science/paleoclimate/ice cores (deuterium excess,bulk ice,null,per mil VSMOW,null,ice cores,null,null,N,null) earth science/paleoclimate/ice cores (sample identification,null,null,null,null,ice cores,null,null,C,null) earth science/paleoclimate/climate reconstructions|ice cores (ice age,null,null,calendar kiloyear before present,null,climate reconstructions|ice cores,null,null,N,present defined as 2000 AD) earth science/paleoclimate/climate reconstructions|ice cores (depth at sample start,null,null,meter,null,climate reconstructions|ice cores,null,null,N,null) earth science/paleoclimate/climate reconstructions|ice cores (depth,null,null,meter,null,climate reconstructions|ice cores,null,null,N,null) earth science/paleoclimate/ice cores (delta 2H,bulk ice,null,per mil VSMOW,null,ice cores,null,null,N,null) earth science/paleoclimate/climate reconstructions|ice cores (depth at sample end,null,null,meter,null,climate reconstructions|ice cores,null,null,N,null) earth science/paleoclimate/climate reconstructions|ice cores (surface temperature,null,null,degree Celsius,null,climate reconstructions|ice cores,anomalized,null,N,"anomalized from present, temperature at source") earth science/paleoclimate/ice core earth science/paleoclimate/ice core earth science/paleoclimate/ice core (Dome Fuji>LATITUDE -77.32>LONGITUDE 38.7) A single isotope ratio (dD or d18O) of water is widely used as an air-temperature proxy in Antarctic ice core records. These isotope ratios, however, do not solely depend on air-temperature but also on the extent of distillation of heavy isotopes out of atmospheric water vapor from an oceanic moisture source to a precipitation site. The temperature changes at the oceanic moisture source (Delta Tsource) and at the precipitation site (Delta Tsite) can be retrieved by using deuterium-excess (d) data. A new d record from Dome Fuji, Antarctica spanning the past 360 000 yr is presented and compared with records from Vostok and EPICA Dome C ice cores. In previous studies, to retrieve Delta Tsource and Delta Tsite information, different linear regression equations were proposed using theoretical isotope distillation models. A major source of uncertainty lies in the coefficient of regression, Beta-site which is related to the sensitivity of d to Delta Tsite. We show that different ranges of temperature and selections of isotopic model outputs may increase the value of Beta-site by more than a factor of two. To explore the impacts of this coefficient on reconstructed temperatures, we apply for the first time the exact same methodology to the isotope records from the three Antarctica ice cores. We show that uncertainties in the Beta-site coefficient strongly affect (i) the glacial-interglacial magnitude of Delta Tsource; (ii) the imprint of obliquity in Delta Tsource and in the site-source temperature gradient. By contrast, we highlight the robustness of Delta Tsite reconstruction using water isotopes records. STUDY NOTES: Stable isotope data (d18O and dD) and temperature reconstruction from Dome Fuji ice cores, Antarctica for the past 360,000 years. Data from core DF1 are deltaD (Uemura et al., 2004) and delta18O (Watanabe et al., 2003). The data-set is corrected and updated in Uemura et al. (2012). Data from core DF2 includes deltaD and delta18O (Uemura et al., 2012). Temperature estimates are based on combined isotope data from both cores (Uemura et al., 2012). The age scale adopted here is the Dome Fuji Ice Core O2/N2 timescale (DFO-2006) (Kawamura et al., 2007). Dome Fuji Station Core Site, East Antarctica: 77°19'N, 39°42'E, 3810m elevation NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Uemura, R. Investigator : Masson-Delmotte, V. Investigator : Jouzel, J. Investigator : Landais, A. Investigator : Motoyama, H. Investigator : Stenni, B. 2012-07-12 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/13121 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/df2012isotope-temperature.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/df2012isotope-temperature.xls https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/df2012isotope-temperature.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/df2012isotope-temperature.xls English https://www.ncdc.noaa.gov/paleo/study/13121 https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/df2012isotope-temperature.txt https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/domefuji/df2012isotope-temperature.xls Uemura, R., V. Masson-Delmotte, J. Jouzel, A. Landais, H. Motoyama, and B. Stenni2012Ranges of moisture-source temperature estimated from Antarctic ice cores stable isotope records over glacial-interglacial cyclesClimate of the Past81109-112510.5194/cp-8-1109-2012https://www.clim-past.net/8/1109/2012/ START YEAR: 360850 cal yr BP * END YEAR: -20 cal yr BP 38.7 -77.32 38.7 -77.32