Data Summary

Dome Fuji Ice Core Preliminary Temperature Reconstruction, 0-340 kyr
Supplement to : Kawamura, K., F. Parrenin, L. Lisiecki, R. Uemura, F. Vimeux, J.P. Severinghaus, M. A. Hutterli, T. Nakazawa, S. Aoki, J. Jouzel, M. E. Raymo, K. Matsumoto, H. Nakata, H. Motoyama, S. Fujita, K. Goto-Azuma, Y. Fujii, and O. Watanabe. 2007. Northern Hemisphere forcing of climatic cycles in Antarctica over the past 360,000 years. Nature, Vol. 448, pp. 912-916.doi:10.1038/nature06015.

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    Summary

  • Preliminary reconstruction of air temperature at Dome Fuji (Antarctica) for the past 340,000 years from isotopic data (d18O and dD) of the first Dome Fuji ice core. The Dome Fuji temperature (delta-Tsite, deviation from the mean of the last 10 kyr) was reconstructed by correcting raw isotopic records of the ice core for vapor source temperature and seawater isotopic composition variations, using an isotopic inversion (Vimeux et al., 2002; Stenni et al., 2004). Due to high noise level in the deuterium excess data especially between 20 and 80 ka, we use a filtered record (passband>5000yr, stopband<2000yr). Note that this data is not intended to resolve millennial changes because of the filtering of the raw data as well as averaging of delta-Tsite to 500-yr intervals. We used a recent seawater d18O reconstruction by Bintanja et al (2005, Nature). We estimate the sensitivities of isotopic values (Uemura et al., 2004) to site (Dome Fuji) and source temperatures and seawater isotopic composition, by using a Rayleigh-based model. We tune this model with the Dome Fuji present-day surface data. We currently lack isotopic data of surface snow from the coast to Dome Fuji to define the air mass trajectories, thus this data should be considered preliminary. Nevertheless, the tuned sensitivities are close to those for Vostok and Dome C (Vimeux et al., 2002; Stenni et al., 2004). The data are put on DFO-2006 age scale and averaged at 500 yr intervals. The value is the mean in the range from 'Top age' to the next 'Top age'. For plotting the data, use staircase (cityscape) function using 'Top age', or linear function using 'Center age'. Note that age is in b2k (before AD 2000).

    Dataset citation

  • Kawamura, K., 2007, Dome Fuji Ice Core Preliminary Temperature Reconstruction, 0-340 kyr, 1.00, Arctic Data archive System (ADS), Japan, https://ads.nipr.ac.jp/dataset/A20180613-005

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    Spatial coverage

  • N:  -77.32°   S:  -77.32°   E:  38.7°   W:  38.7°  

    Temporal coverage

  • 2007-08-01   -   2007-08-01

    License

  •  CC BY 4.0

DATA CONTORIBUTOR & GROUP

  • Kenji Kawamura
    (National Institite of Polar Research)

PARAMETERS

  • ISOTOPES

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