Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2
Our understanding of climate dynamics during millennial-scale events is incomplete, partially due to the lack of their precise phase analyses under various boundary conditions. Here we present nine speleothem oxygen-isotope records from mid-to-low-latitude monsoon regimes with sub-centennial age pre...
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ftcdlib:oai:escholarship.org:ark:/13030/qt8g2383sf 2023-11-12T04:06:34+01:00 Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2 Dong, Xiyu Kathayat, Gayatri Rasmussen, Sune O Svensson, Anders Severinghaus, Jeffrey P Li, Hanying Sinha, Ashish Xu, Yao Zhang, Haiwei Shi, Zhengguo Cai, Yanjun Pérez-Mejías, Carlos Baker, Jonathan Zhao, Jingyao Spötl, Christoph Columbu, Andrea Ning, Youfeng Stríkis, Nicolás M Chen, Shitao Wang, Xianfeng Gupta, Anil K Dutt, Som Zhang, Fan Cruz, Francisco W An, Zhisheng Lawrence Edwards, R Cheng, Hai 5867 2022-01-01 application/pdf https://escholarship.org/uc/item/8g2383sf unknown eScholarship, University of California qt8g2383sf https://escholarship.org/uc/item/8g2383sf public Nature Communications, vol 13, iss 1 Earth Sciences Physical Geography and Environmental Geoscience Geology Climate Action article 2022 ftcdlib 2023-10-16T18:05:26Z Our understanding of climate dynamics during millennial-scale events is incomplete, partially due to the lack of their precise phase analyses under various boundary conditions. Here we present nine speleothem oxygen-isotope records from mid-to-low-latitude monsoon regimes with sub-centennial age precision and multi-annual resolution, spanning the Heinrich Stadial 2 (HS2) - a millennial-scale event that occurred at the Last Glacial Maximum. Our data suggests that the Greenland and Antarctic ice-core chronologies require +320- and +400-year adjustments, respectively, supported by extant volcanic evidence and radiocarbon ages. Our chronological framework shows a synchronous HS2 onset globally. Our records precisely characterize a centennial-scale abrupt "tropical atmospheric seesaw" superimposed on the conventional "bipolar seesaw" at the beginning of HS2, implying a unique response/feedback from low-latitude hydroclimate. Together with our observation of an early South American monsoon shift at the HS2 termination, we suggest a more active role of low-latitude hydroclimate dynamics underlying millennial events than previously thought. Article in Journal/Newspaper Antarc* Antarctic Greenland ice core University of California: eScholarship Antarctic Greenland |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Earth Sciences Physical Geography and Environmental Geoscience Geology Climate Action |
spellingShingle |
Earth Sciences Physical Geography and Environmental Geoscience Geology Climate Action Dong, Xiyu Kathayat, Gayatri Rasmussen, Sune O Svensson, Anders Severinghaus, Jeffrey P Li, Hanying Sinha, Ashish Xu, Yao Zhang, Haiwei Shi, Zhengguo Cai, Yanjun Pérez-Mejías, Carlos Baker, Jonathan Zhao, Jingyao Spötl, Christoph Columbu, Andrea Ning, Youfeng Stríkis, Nicolás M Chen, Shitao Wang, Xianfeng Gupta, Anil K Dutt, Som Zhang, Fan Cruz, Francisco W An, Zhisheng Lawrence Edwards, R Cheng, Hai Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2 |
topic_facet |
Earth Sciences Physical Geography and Environmental Geoscience Geology Climate Action |
description |
Our understanding of climate dynamics during millennial-scale events is incomplete, partially due to the lack of their precise phase analyses under various boundary conditions. Here we present nine speleothem oxygen-isotope records from mid-to-low-latitude monsoon regimes with sub-centennial age precision and multi-annual resolution, spanning the Heinrich Stadial 2 (HS2) - a millennial-scale event that occurred at the Last Glacial Maximum. Our data suggests that the Greenland and Antarctic ice-core chronologies require +320- and +400-year adjustments, respectively, supported by extant volcanic evidence and radiocarbon ages. Our chronological framework shows a synchronous HS2 onset globally. Our records precisely characterize a centennial-scale abrupt "tropical atmospheric seesaw" superimposed on the conventional "bipolar seesaw" at the beginning of HS2, implying a unique response/feedback from low-latitude hydroclimate. Together with our observation of an early South American monsoon shift at the HS2 termination, we suggest a more active role of low-latitude hydroclimate dynamics underlying millennial events than previously thought. |
format |
Article in Journal/Newspaper |
author |
Dong, Xiyu Kathayat, Gayatri Rasmussen, Sune O Svensson, Anders Severinghaus, Jeffrey P Li, Hanying Sinha, Ashish Xu, Yao Zhang, Haiwei Shi, Zhengguo Cai, Yanjun Pérez-Mejías, Carlos Baker, Jonathan Zhao, Jingyao Spötl, Christoph Columbu, Andrea Ning, Youfeng Stríkis, Nicolás M Chen, Shitao Wang, Xianfeng Gupta, Anil K Dutt, Som Zhang, Fan Cruz, Francisco W An, Zhisheng Lawrence Edwards, R Cheng, Hai |
author_facet |
Dong, Xiyu Kathayat, Gayatri Rasmussen, Sune O Svensson, Anders Severinghaus, Jeffrey P Li, Hanying Sinha, Ashish Xu, Yao Zhang, Haiwei Shi, Zhengguo Cai, Yanjun Pérez-Mejías, Carlos Baker, Jonathan Zhao, Jingyao Spötl, Christoph Columbu, Andrea Ning, Youfeng Stríkis, Nicolás M Chen, Shitao Wang, Xianfeng Gupta, Anil K Dutt, Som Zhang, Fan Cruz, Francisco W An, Zhisheng Lawrence Edwards, R Cheng, Hai |
author_sort |
Dong, Xiyu |
title |
Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2 |
title_short |
Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2 |
title_full |
Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2 |
title_fullStr |
Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2 |
title_full_unstemmed |
Coupled atmosphere-ice-ocean dynamics during Heinrich Stadial 2 |
title_sort |
coupled atmosphere-ice-ocean dynamics during heinrich stadial 2 |
publisher |
eScholarship, University of California |
publishDate |
2022 |
url |
https://escholarship.org/uc/item/8g2383sf |
op_coverage |
5867 |
geographic |
Antarctic Greenland |
geographic_facet |
Antarctic Greenland |
genre |
Antarc* Antarctic Greenland ice core |
genre_facet |
Antarc* Antarctic Greenland ice core |
op_source |
Nature Communications, vol 13, iss 1 |
op_relation |
qt8g2383sf https://escholarship.org/uc/item/8g2383sf |
op_rights |
public |
_version_ |
1782327668942831616 |