Data Publications

Dome Fuji ion data

hasData_Center_Short_Name
  • JP/MEXT/NIPR
hasDataset_Online_Resource
hasProject_Long_Name
  • Japanese Antarctic Research Expedition
hasDataset_Release_Date
  • 2019
hasDataset_Title
  • Dome Fuji ion data
hasEntry_ID
  • A20190607-001
hasKeyword
  • Antarcitica
  • DMS emissions
  • Dome Fuji
  • non sea salt sulphate
hasReference
  • 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.
hasSummary
  • 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.
GCMD Sciencekeywords describing the dataset. Click on Keyword to find similar datasets