A reliable benchmark of the last 640,000 years millennial climate variability
How often have past climates undergone abrupt transitions? While our understanding of millennial variability during the past 130,000 years is well established, with precise dates available, such information on previous climate cycles is limited. To address this question, we identified 196 abrupt tra...
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ftcolumbiauniv:oai:academiccommons.columbia.edu:10.7916/1eps-7v20 2024-09-09T19:43:13+00:00 A reliable benchmark of the last 640,000 years millennial climate variability Rousseau, Denis-Didier Bagniewski, Witold Cheng, Hai 2023 https://doi.org/10.7916/1eps-7v20 English eng https://doi.org/10.7916/1eps-7v20 Climatology Paleoclimatology Climatic changes Climatic changes--Models Articles 2023 ftcolumbiauniv https://doi.org/10.7916/1eps-7v20 2024-08-23T04:10:24Z How often have past climates undergone abrupt transitions? While our understanding of millennial variability during the past 130,000 years is well established, with precise dates available, such information on previous climate cycles is limited. To address this question, we identified 196 abrupt transitions in the δ18O record of the well-dated Chinese composite speleothem for the last 640,000 years. These results correspond to abrupt changes in the strength of the East Asian Monsoon, which align with the Greenland stadials and interstadials observed in the North Atlantic region during the last 130,000 years before present. These precise dates of past abrupt climate changes constitute a reliable and necessary benchmark for Earth System models used to study future climate scenarios. Article in Journal/Newspaper Greenland North Atlantic Columbia University: Academic Commons Greenland |
institution |
Open Polar |
collection |
Columbia University: Academic Commons |
op_collection_id |
ftcolumbiauniv |
language |
English |
topic |
Climatology Paleoclimatology Climatic changes Climatic changes--Models |
spellingShingle |
Climatology Paleoclimatology Climatic changes Climatic changes--Models Rousseau, Denis-Didier Bagniewski, Witold Cheng, Hai A reliable benchmark of the last 640,000 years millennial climate variability |
topic_facet |
Climatology Paleoclimatology Climatic changes Climatic changes--Models |
description |
How often have past climates undergone abrupt transitions? While our understanding of millennial variability during the past 130,000 years is well established, with precise dates available, such information on previous climate cycles is limited. To address this question, we identified 196 abrupt transitions in the δ18O record of the well-dated Chinese composite speleothem for the last 640,000 years. These results correspond to abrupt changes in the strength of the East Asian Monsoon, which align with the Greenland stadials and interstadials observed in the North Atlantic region during the last 130,000 years before present. These precise dates of past abrupt climate changes constitute a reliable and necessary benchmark for Earth System models used to study future climate scenarios. |
format |
Article in Journal/Newspaper |
author |
Rousseau, Denis-Didier Bagniewski, Witold Cheng, Hai |
author_facet |
Rousseau, Denis-Didier Bagniewski, Witold Cheng, Hai |
author_sort |
Rousseau, Denis-Didier |
title |
A reliable benchmark of the last 640,000 years millennial climate variability |
title_short |
A reliable benchmark of the last 640,000 years millennial climate variability |
title_full |
A reliable benchmark of the last 640,000 years millennial climate variability |
title_fullStr |
A reliable benchmark of the last 640,000 years millennial climate variability |
title_full_unstemmed |
A reliable benchmark of the last 640,000 years millennial climate variability |
title_sort |
reliable benchmark of the last 640,000 years millennial climate variability |
publishDate |
2023 |
url |
https://doi.org/10.7916/1eps-7v20 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_relation |
https://doi.org/10.7916/1eps-7v20 |
op_doi |
https://doi.org/10.7916/1eps-7v20 |
_version_ |
1809912560814653440 |