Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9)
Abstract 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 δ18O 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 t...
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ftdoajarticles:oai:doaj.org/article:83fee4b8cddf41a6b2904523ad946ab2 2023-05-15T17:30:23+02:00 Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) Yassine Ait Brahim Matthew C. Peros André E. Viau Mercedes Liedtke Jesús M. Pajón Julio Valdes Xianglei Li R. Lawrence Edwards Eduard G. Reinhardt Frank Oliva 2022-12-01T00:00:00Z https://doi.org/10.1038/s41598-022-24610-x https://doaj.org/article/83fee4b8cddf41a6b2904523ad946ab2 EN eng Nature Portfolio https://doi.org/10.1038/s41598-022-24610-x https://doaj.org/toc/2045-2322 doi:10.1038/s41598-022-24610-x 2045-2322 https://doaj.org/article/83fee4b8cddf41a6b2904523ad946ab2 Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022) Medicine R Science Q article 2022 ftdoajarticles https://doi.org/10.1038/s41598-022-24610-x 2022-12-30T22:46:36Z Abstract 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 δ18O 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. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Scientific Reports 12 1 |
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Medicine R Science Q Yassine Ait Brahim Matthew C. Peros André E. Viau Mercedes Liedtke Jesús M. Pajón Julio Valdes Xianglei Li R. Lawrence Edwards Eduard G. Reinhardt Frank Oliva Hydroclimate variability in the Caribbean during North Atlantic Heinrich cooling events (H8 and H9) |
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Medicine R Science Q |
description |
Abstract 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 δ18O 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 |
Article in Journal/Newspaper |
author |
Yassine Ait Brahim Matthew C. Peros André E. Viau Mercedes Liedtke Jesús M. Pajón Julio Valdes Xianglei Li R. Lawrence Edwards Eduard G. Reinhardt Frank Oliva |
author_facet |
Yassine Ait Brahim Matthew C. Peros André E. Viau Mercedes Liedtke Jesús M. Pajón Julio Valdes Xianglei Li R. Lawrence Edwards Eduard G. Reinhardt Frank Oliva |
author_sort |
Yassine Ait Brahim |
title |
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_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_sort |
hydroclimate variability in the caribbean during north atlantic heinrich cooling events (h8 and h9) |
publisher |
Nature Portfolio |
publishDate |
2022 |
url |
https://doi.org/10.1038/s41598-022-24610-x https://doaj.org/article/83fee4b8cddf41a6b2904523ad946ab2 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022) |
op_relation |
https://doi.org/10.1038/s41598-022-24610-x https://doaj.org/toc/2045-2322 doi:10.1038/s41598-022-24610-x 2045-2322 https://doaj.org/article/83fee4b8cddf41a6b2904523ad946ab2 |
op_doi |
https://doi.org/10.1038/s41598-022-24610-x |
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Scientific Reports |
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12 |
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1 |
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1766126763812847616 |