Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales
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...
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ftpubmed:oai:pubmedcentral.nih.gov:5015120 2023-05-15T13:30:39+02:00 Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales Chen, Shitao Wang, Yongjin Cheng, Hai Edwards, R. Lawrence Wang, Xianfeng Kong, Xinggong Liu, Dianbing 2016-09-08 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5015120/ http://www.ncbi.nlm.nih.gov/pubmed/27605015 https://doi.org/10.1038/srep32995 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5015120/ http://www.ncbi.nlm.nih.gov/pubmed/27605015 http://dx.doi.org/10.1038/srep32995 Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ 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/ CC-BY Article Text 2016 ftpubmed https://doi.org/10.1038/srep32995 2016-09-18T00:14:51Z 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. Text Antarc* Antarctic ice core PubMed Central (PMC) Antarctic Scientific Reports 6 1 |
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Article Chen, Shitao Wang, Yongjin Cheng, Hai Edwards, R. Lawrence Wang, Xianfeng Kong, Xinggong Liu, Dianbing Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales |
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Article |
description |
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. |
format |
Text |
author |
Chen, Shitao Wang, Yongjin Cheng, Hai Edwards, R. Lawrence Wang, Xianfeng Kong, Xinggong Liu, Dianbing |
author_facet |
Chen, Shitao Wang, Yongjin Cheng, Hai Edwards, R. Lawrence Wang, Xianfeng Kong, Xinggong Liu, Dianbing |
author_sort |
Chen, Shitao |
title |
Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales |
title_short |
Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales |
title_full |
Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales |
title_fullStr |
Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales |
title_full_unstemmed |
Strong coupling of Asian Monsoon and Antarctic climates on sub-orbital timescales |
title_sort |
strong coupling of asian monsoon and antarctic climates on sub-orbital timescales |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5015120/ http://www.ncbi.nlm.nih.gov/pubmed/27605015 https://doi.org/10.1038/srep32995 |
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Antarctic |
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Antarctic |
genre |
Antarc* Antarctic ice core |
genre_facet |
Antarc* Antarctic ice core |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5015120/ http://www.ncbi.nlm.nih.gov/pubmed/27605015 http://dx.doi.org/10.1038/srep32995 |
op_rights |
Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ 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/ |
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CC-BY |
op_doi |
https://doi.org/10.1038/srep32995 |
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Scientific Reports |
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6 |
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1 |
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1766011114467885056 |