Dome Fuji ion data ...

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 b...

Full description

Bibliographic Details
Main Authors: Goto-Azuma, Kumiko, Hirabayashi, Motohiro, Motoyama, Hideaki, Miyake, Takayuki, Kuramoto, Takayuki, Uemura, Ryu, Igarashi, Makoto, Iizuka, Yoshinori, Sakurai, Toshimitsu, Horikawa, Shinichiro, Suzuki, Keisuke, Suzuki, Toshitaka, Fujita, Koji, Kondo, Yutaka, Hattori, Shohei, Fujii, Yoshiyuki
Format: Dataset
Language:English
Published: Arctic Data archive System (ADS), Japan 2019
Subjects:
PALEOCLIMATE>ICE CORE RECORDS>IONS
Antarctic
Dome Fuji
East Antarctica
Southern Ocean
The Antarctic
Antarc*
Antarctica
ice core
Online Access:https://dx.doi.org/10.17592/001.2019060701
https://ads.nipr.ac.jp/dataset/A20190607-001
Description
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. ...

Similar Items