Data Summary

Dome Fuji ion data
Supplement to : K. Goto-Azuma, M. Hirabayashi, H. Motoyama, T. Miyake, T. Kuramoto, R.Uemura, M. Igarashi, Y. Iizuka, T. Sakurai, S. Horikawa, K. Suzuki, T.Suzuki, K. Fujita, Y. Kondo, S. Hattori, Y. Fujii. Reduced marinephytoplankton sulphur emissions in the Southern Ocean during the past seven glacials, Nature Communications, 2019, DOI:10.1038/s41467-019-11128-6.

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    Summary

  • Marine biogenic sulphur affects Earth's radiation budget and may be an indicator of primary productivity in the Southern Ocean, which is closely related to atmospheric CO2 variability through the biological pump. Previous ice-core studies in Antarctica show little climate dependence of marine biogenic sulphur emissions and hence primary productivity, contradictory to marine sediment records. Here we present new 720,000-year ice core records from Dome Fuji in East Antarctica and show that a large portion of non-sea-salt sulphate, which was traditionally used as a proxy for marine biogenic sulphate, likely originates from terrestrial dust during glacials. By correcting for this, we make a revised calculation of biogenic sulphate and find that its flux is reduced in glacial periods. Our results suggest reduced dimethylsulphide emissions in the Antarctic Zone of the Southern Ocean during glacials and provide new evidence for the coupling between climate and the Southern Ocean sulphur cycle.

    Dataset citation

  • Goto-Azuma, K., M. Hirabayashi, H. Motoyama, T. Miyake, T. Kuramoto, R. Uemura, M. Igarashi, Y. Iizuka, T. Sakurai, S. Horikawa, K. Suzuki, T. Suzuki, K. Fujita, Y. Kondo, S. Hattori, Y. Fujii, 2019, Dome Fuji ion data, 1.00, Arctic Data archive System (ADS), Japan, doi: 10.17592/001.2019060701

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    Spatial coverage

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

    Temporal coverage

  • 1996-01-01   -   2013-12-31

    License

  •  CC BY-SA 4.0

DATA CONTORIBUTOR & GROUP

  • Kumiko Goto-Azuma
    (National Institute of Polar Research)
  • Motohiro Hirabayashi
    (National Institute of Polar Research)
  • Hideaki Motoyama
    (National Institute of Polar Research)
  • Takayuki Miyake
    (National Institute of Polar Research)
  • Takayuki Kuramoto
    (Tokai University)
  • Ryu Uemura
    (Graduate School of Environmental Studies, Nagoya University)
  • Makoto Igarashi
    (National Institute of Polar Research)
  • Yoshinori Iizuka
    (Hokkaido University)
  • Toshimitsu Sakurai
    (Civil Engineering Research Institute for Cold Region (CERI))
  • Shinichiro Horikawa
    (Earthquake and Volcano Research Center, Graduate School of Environmental Studies, Nagoya University)
  • Keisuke Suzuki
    (Shinshu University)
  • Toshitaka Suzuki
    (Yamagata University)
  • Koji Fujita
    (Graduate School of Environmental Studies, Nagoya University)
  • Yutaka Kondo
    (National Institute of Polar Research)
  • Shohei Hattori
    (Tokyo Institute of Technology)
  • Yoshiyuki Fujii
    (National Institute of Polar Research)

PARAMETERS

  • IONS

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