Dome Fuji 720 kyr Oxygen Isotope (bandsaw chip) and Dust Data ...

We investigate the long-term characteristics of climatic variability using a new ice-core record from Dome Fuji, East Antarctica, combined with an existing long record from the Dome C ice core. Antarctic warming events over the past 720,000 years are most frequent when the Antarctic temperature is s...

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Bibliographic Details
Main Authors: Kawamura, Kenji, Motoyama, Hideaki, Goto-Azuma, Kumiko, Uemura, Ryu, Oyabu, Ikumi, Project Members, Dome Fuji Ice Core
Format: Dataset
Language:English
Published: Arctic Data archive System (ADS), Japan 2017
Subjects:
PALEOCLIMATE>ICE CORE RECORDS>ISOTOPES
PALEOCLIMATE>ICE CORE RECORDS>IONS
CRYOSPHERE>GLACIERS/ICE SHEETS>ICE SHEETS
CLIMATE INDICATORS>PALEOCLIMATE INDICATORS>ICE CORE RECORDS>IONS
CLIMATE INDICATORS>PALEOCLIMATE INDICATORS>ICE CORE RECORDS>ISOTOPES>OXYGEN ISOTOPES
Antarctic
Dome Fuji
East Antarctica
The Antarctic
Antarc*
Antarctica
ice core
North Atlantic
Sea ice
Online Access:https://dx.doi.org/10.17592/001.2019121622
https://ads.nipr.ac.jp/dataset/A20191216-022
Description
Summary:We investigate the long-term characteristics of climatic variability using a new ice-core record from Dome Fuji, East Antarctica, combined with an existing long record from the Dome C ice core. Antarctic warming events over the past 720,000 years are most frequent when the Antarctic temperature is slightly below average on orbital time scales, equivalent to an intermediate climate during glacial periods, whereas interglacial and fully glaciated climates are unfavourable for a millennial-scale bipolar seesaw. Numerical experiments using a fully coupled atmosphere-ocean general circulation model with freshwater hosing in the northern North Atlantic showed that climate becomes most unstable in intermediate glacial conditions associated with large changes in sea ice and the Atlantic Meridional Overturning Circulation. ...

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