Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/84617
Title: Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales
Authors: Kong, Xinggong
Liu, Dianbing
Chen, Shitao
Wang, Yongjin
Cheng, Hai
Edwards, R. Lawrence
Wang, Xianfeng
Keywords: Attribution
Palaeoclimate
Science::Geology
Issue Date: 2016
Source: Chen, S., Wang, Y., Cheng, H., Edwards, R. L., Wang, X., Kong, X., & Liu, D. (2016). Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales. Scientific Reports, 6(1). doi:10.1038/srep32995
Series/Report no.: Scientific Reports
Abstract: There is increasing evidence that millennial-scale climate variability played an active role on orbital-scale climate changes, but the mechanism for this remains unclear. A 230Th-dated stalagmite δ18O record between 88 and 22 thousand years (ka) ago from Yongxing Cave in central China characterizes changes in Asian monsoon (AM) strength. After removing the 65°N insolation signal from our record, the δ18O residue is strongly anti-phased with Antarctic temperature variability on sub-orbital timescales during the Marine Isotope Stage (MIS) 3. Furthermore, once the ice volume signal from Antarctic ice core records were removed and extrapolated back to the last two glacial-interglacial cycles, we observe a linear relationship for both short- and long-duration events between Asian and Antarctic climate changes. This provides the robust evidence of a link between northern and southern hemisphere climates that operates through changes in atmospheric circulation. We find that the weakest monsoon closely associated with the warmest Antarctic event always occurred during the Terminations. This finding, along with similar shifts in the opal flux record, suggests that millennial-scale events play a key role in driving the deglaciation through positive feedbacks associated with enhanced upwelling and increasing CO2.
URI: https://hdl.handle.net/10356/84617
http://hdl.handle.net/10220/50427
ISSN: 2045-2322
DOI: http://dx.doi.org/10.1038/srep32995
Rights: © 2016 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
metadata.item.grantfulltext: open
metadata.item.fulltext: With Fulltext
Appears in Collections:EOS Journal Articles

Files in This Item:
File Description SizeFormat 
Strong coupling of Asian Monsoon and Antarctic climates on suborbital timescales.pdf1.03 MBAdobe PDFThumbnail
View/Open

Google ScholarTM

Check

Altmetric

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.