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Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9)
We present a speleothem record from western Cuba, spanning the period 98.7–84.9 ka BP. Our record shows two distinctive periods of high δ(18)O corresponding to dry and/or cold periods during 85–87.6 and 90.2–93.1 ka BP, synchronous with Heinrich events 8 and 9 (H8 and H9). Hence, we provide the firs...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9715535/ https://www.ncbi.nlm.nih.gov/pubmed/36456594 http://dx.doi.org/10.1038/s41598-022-24610-x |
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author | Ait Brahim, Yassine Peros, Matthew C. Viau, André E. Liedtke, Mercedes Pajón, Jesús M. Valdes, Julio Li, Xianglei Edwards, R. Lawrence Reinhardt, Eduard G. Oliva, Frank |
author_facet | Ait Brahim, Yassine Peros, Matthew C. Viau, André E. Liedtke, Mercedes Pajón, Jesús M. Valdes, Julio Li, Xianglei Edwards, R. Lawrence Reinhardt, Eduard G. Oliva, Frank |
author_sort | Ait Brahim, Yassine |
collection | PubMed |
description | We present a speleothem record from western Cuba, spanning the period 98.7–84.9 ka BP. Our record shows two distinctive periods of high δ(18)O corresponding to dry and/or cold periods during 85–87.6 and 90.2–93.1 ka BP, synchronous with Heinrich events 8 and 9 (H8 and H9). Hence, we provide the first proxy evidence of the local Caribbean climate response to H8 and H9. Interestingly, H8 is more pronounced compared to H9, which may be a local response to lower temperatures in the North Atlantic resulting in a weak AMOC and reduced deep water formation, therefore a stronger south shift of the ITCZ. Our data complement existing speleothem records from western Cuba which, collectively, provide a nearly continuous paleoclimate time-series spanning the last 100 ka BP, indicating a consistent response to millennial-scale events as dry and/or cooler conditions. The comparison with regional paleoclimate records reveals an anti-phased relationship with South America, caused by the southern movements of the ITCZ during millennial-scale events which lead to dry conditions in the Caribbean and a stronger South American Monsoon System. |
format | Online Article Text |
id | pubmed-9715535 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-97155352022-12-03 Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) Ait Brahim, Yassine Peros, Matthew C. Viau, André E. Liedtke, Mercedes Pajón, Jesús M. Valdes, Julio Li, Xianglei Edwards, R. Lawrence Reinhardt, Eduard G. Oliva, Frank Sci Rep Article We present a speleothem record from western Cuba, spanning the period 98.7–84.9 ka BP. Our record shows two distinctive periods of high δ(18)O corresponding to dry and/or cold periods during 85–87.6 and 90.2–93.1 ka BP, synchronous with Heinrich events 8 and 9 (H8 and H9). Hence, we provide the first proxy evidence of the local Caribbean climate response to H8 and H9. Interestingly, H8 is more pronounced compared to H9, which may be a local response to lower temperatures in the North Atlantic resulting in a weak AMOC and reduced deep water formation, therefore a stronger south shift of the ITCZ. Our data complement existing speleothem records from western Cuba which, collectively, provide a nearly continuous paleoclimate time-series spanning the last 100 ka BP, indicating a consistent response to millennial-scale events as dry and/or cooler conditions. The comparison with regional paleoclimate records reveals an anti-phased relationship with South America, caused by the southern movements of the ITCZ during millennial-scale events which lead to dry conditions in the Caribbean and a stronger South American Monsoon System. Nature Publishing Group UK 2022-12-01 /pmc/articles/PMC9715535/ /pubmed/36456594 http://dx.doi.org/10.1038/s41598-022-24610-x Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Ait Brahim, Yassine Peros, Matthew C. Viau, André E. Liedtke, Mercedes Pajón, Jesús M. Valdes, Julio Li, Xianglei Edwards, R. Lawrence Reinhardt, Eduard G. Oliva, Frank Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) |
title | Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) |
title_full | Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) |
title_fullStr | Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) |
title_full_unstemmed | Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) |
title_short | Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) |
title_sort | hydroclimate variability in the caribbean during north atlantic heinrich cooling events (h8 and h9) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9715535/ https://www.ncbi.nlm.nih.gov/pubmed/36456594 http://dx.doi.org/10.1038/s41598-022-24610-x |
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