Timing and structure of the Younger Dryas event and its underlying climate dynamics
The Younger Dryas (YD), arguably the most widely studied millennial-scale extreme climate event, was characterized by diverse hydroclimate shifts globally and severe cooling at high northern latitudes that abruptly punctuated the warming trend from the last glacial to the present interglacial. To da...
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Online Access: | http://ir.ieecas.cn/handle/361006/15397 http://ir.ieecas.cn/handle/361006/15398 https://doi.org/10.1073/pnas.2007869117 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/15398 2023-06-11T04:06:04+02:00 Timing and structure of the Younger Dryas event and its underlying climate dynamics Cheng, Hai Zhang, Haiwei Spoetl, Christoph Baker, Jonathan Sinha, Ashish Li, Hanying Bartolome, Miguel Moreno, Ana Kathayat, Gayatri Zhao, Jingyao Dong, Xiyu Li, Youwei Ning, Youfeng Jia, Xue Zong, Baoyun Brahim, Yassine Ait Perez-Mejias, Carlos Cai, Yanjun Novello, Valdir F. Cruz, Francisco W. Severinghaus, Jeffrey P. An, Zhisheng Edwards, R. Lawrence 2020-09-22 http://ir.ieecas.cn/handle/361006/15397 http://ir.ieecas.cn/handle/361006/15398 https://doi.org/10.1073/pnas.2007869117 英语 eng NATL ACAD SCIENCES PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA http://ir.ieecas.cn/handle/361006/15397 http://ir.ieecas.cn/handle/361006/15398 doi:10.1073/pnas.2007869117 Younger Dryas timing structure event phasing climate dynamics CORE WD2014 CHRONOLOGY LAST GLACIAL PERIOD HIGH-RESOLUTION MONSOON RECORD ASIAN MONSOON SPELEOTHEM RECORD TROPICAL PACIFIC HULU CAVE OCEAN AGE Science & Technology - Other Topics Multidisciplinary Sciences 期刊论文 2020 ftchinacascieeca https://doi.org/10.1073/pnas.2007869117 2023-05-08T13:25:00Z The Younger Dryas (YD), arguably the most widely studied millennial-scale extreme climate event, was characterized by diverse hydroclimate shifts globally and severe cooling at high northern latitudes that abruptly punctuated the warming trend from the last glacial to the present interglacial. To date, a precise understanding of its trigger, propagation, and termination remains elusive. Here, we present speleothem oxygen-isotope data that, in concert with other proxy records, allow us to quantify the timing of the YD onset and termination at an unprecedented subcentennial temporal precision across the North Atlantic, Asian Monsoon-Westerlies, and South American Monsoon regions. Our analysis suggests that the onsets of YD in the North Atlantic (12,870 +/- 30 B.P.) and the Asian Monsoon-Westerlies region are essentially synchronous within a few decades and lead the onset in Antarctica, implying a north-to-south climate signal propagation via both atmospheric (decadal-time scale) and oceanic (centennial-time scale) processes, similar to the Dansgaard-Oeschger events during the last glacial period. In contrast, the YD termination may have started first in Antarctica at similar to 11,900 B.P., or perhaps even earlier in the western tropical Pacific, followed by the North Atlantic between similar to 11,700 +/- 40 and 11,610 +/- 40 B.P. These observations suggest that the initial YD termination might have originated in the Southern Hemisphere and/or the tropical Pacific, indicating a Southern Hemisphere/tropics to North Atlantic-Asian Monsoon-Westerlies directionality of climatic recovery. Report Antarc* Antarctica Dansgaard-Oeschger events North Atlantic Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Hulu ENVELOPE(8.610,8.610,62.837,62.837) Pacific Proceedings of the National Academy of Sciences 117 38 23408 23417 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Younger Dryas timing structure event phasing climate dynamics CORE WD2014 CHRONOLOGY LAST GLACIAL PERIOD HIGH-RESOLUTION MONSOON RECORD ASIAN MONSOON SPELEOTHEM RECORD TROPICAL PACIFIC HULU CAVE OCEAN AGE Science & Technology - Other Topics Multidisciplinary Sciences |
spellingShingle |
Younger Dryas timing structure event phasing climate dynamics CORE WD2014 CHRONOLOGY LAST GLACIAL PERIOD HIGH-RESOLUTION MONSOON RECORD ASIAN MONSOON SPELEOTHEM RECORD TROPICAL PACIFIC HULU CAVE OCEAN AGE Science & Technology - Other Topics Multidisciplinary Sciences Cheng, Hai Zhang, Haiwei Spoetl, Christoph Baker, Jonathan Sinha, Ashish Li, Hanying Bartolome, Miguel Moreno, Ana Kathayat, Gayatri Zhao, Jingyao Dong, Xiyu Li, Youwei Ning, Youfeng Jia, Xue Zong, Baoyun Brahim, Yassine Ait Perez-Mejias, Carlos Cai, Yanjun Novello, Valdir F. Cruz, Francisco W. Severinghaus, Jeffrey P. An, Zhisheng Edwards, R. Lawrence Timing and structure of the Younger Dryas event and its underlying climate dynamics |
topic_facet |
Younger Dryas timing structure event phasing climate dynamics CORE WD2014 CHRONOLOGY LAST GLACIAL PERIOD HIGH-RESOLUTION MONSOON RECORD ASIAN MONSOON SPELEOTHEM RECORD TROPICAL PACIFIC HULU CAVE OCEAN AGE Science & Technology - Other Topics Multidisciplinary Sciences |
description |
The Younger Dryas (YD), arguably the most widely studied millennial-scale extreme climate event, was characterized by diverse hydroclimate shifts globally and severe cooling at high northern latitudes that abruptly punctuated the warming trend from the last glacial to the present interglacial. To date, a precise understanding of its trigger, propagation, and termination remains elusive. Here, we present speleothem oxygen-isotope data that, in concert with other proxy records, allow us to quantify the timing of the YD onset and termination at an unprecedented subcentennial temporal precision across the North Atlantic, Asian Monsoon-Westerlies, and South American Monsoon regions. Our analysis suggests that the onsets of YD in the North Atlantic (12,870 +/- 30 B.P.) and the Asian Monsoon-Westerlies region are essentially synchronous within a few decades and lead the onset in Antarctica, implying a north-to-south climate signal propagation via both atmospheric (decadal-time scale) and oceanic (centennial-time scale) processes, similar to the Dansgaard-Oeschger events during the last glacial period. In contrast, the YD termination may have started first in Antarctica at similar to 11,900 B.P., or perhaps even earlier in the western tropical Pacific, followed by the North Atlantic between similar to 11,700 +/- 40 and 11,610 +/- 40 B.P. These observations suggest that the initial YD termination might have originated in the Southern Hemisphere and/or the tropical Pacific, indicating a Southern Hemisphere/tropics to North Atlantic-Asian Monsoon-Westerlies directionality of climatic recovery. |
format |
Report |
author |
Cheng, Hai Zhang, Haiwei Spoetl, Christoph Baker, Jonathan Sinha, Ashish Li, Hanying Bartolome, Miguel Moreno, Ana Kathayat, Gayatri Zhao, Jingyao Dong, Xiyu Li, Youwei Ning, Youfeng Jia, Xue Zong, Baoyun Brahim, Yassine Ait Perez-Mejias, Carlos Cai, Yanjun Novello, Valdir F. Cruz, Francisco W. Severinghaus, Jeffrey P. An, Zhisheng Edwards, R. Lawrence |
author_facet |
Cheng, Hai Zhang, Haiwei Spoetl, Christoph Baker, Jonathan Sinha, Ashish Li, Hanying Bartolome, Miguel Moreno, Ana Kathayat, Gayatri Zhao, Jingyao Dong, Xiyu Li, Youwei Ning, Youfeng Jia, Xue Zong, Baoyun Brahim, Yassine Ait Perez-Mejias, Carlos Cai, Yanjun Novello, Valdir F. Cruz, Francisco W. Severinghaus, Jeffrey P. An, Zhisheng Edwards, R. Lawrence |
author_sort |
Cheng, Hai |
title |
Timing and structure of the Younger Dryas event and its underlying climate dynamics |
title_short |
Timing and structure of the Younger Dryas event and its underlying climate dynamics |
title_full |
Timing and structure of the Younger Dryas event and its underlying climate dynamics |
title_fullStr |
Timing and structure of the Younger Dryas event and its underlying climate dynamics |
title_full_unstemmed |
Timing and structure of the Younger Dryas event and its underlying climate dynamics |
title_sort |
timing and structure of the younger dryas event and its underlying climate dynamics |
publisher |
NATL ACAD SCIENCES |
publishDate |
2020 |
url |
http://ir.ieecas.cn/handle/361006/15397 http://ir.ieecas.cn/handle/361006/15398 https://doi.org/10.1073/pnas.2007869117 |
long_lat |
ENVELOPE(8.610,8.610,62.837,62.837) |
geographic |
Hulu Pacific |
geographic_facet |
Hulu Pacific |
genre |
Antarc* Antarctica Dansgaard-Oeschger events North Atlantic |
genre_facet |
Antarc* Antarctica Dansgaard-Oeschger events North Atlantic |
op_relation |
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA http://ir.ieecas.cn/handle/361006/15397 http://ir.ieecas.cn/handle/361006/15398 doi:10.1073/pnas.2007869117 |
op_doi |
https://doi.org/10.1073/pnas.2007869117 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
117 |
container_issue |
38 |
container_start_page |
23408 |
op_container_end_page |
23417 |
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1768377825829584896 |