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 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...
Published in: | Scientific Reports |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Nature
2022
|
Subjects: | |
Online Access: | https://doi.org/10.1038/s41598-022-24610-x https://nrc-publications.canada.ca/eng/view/ft/?id=b270ebe8-7d4b-4351-af81-86857808f40b https://nrc-publications.canada.ca/eng/view/object/?id=b270ebe8-7d4b-4351-af81-86857808f40b https://nrc-publications.canada.ca/fra/voir/objet/?id=b270ebe8-7d4b-4351-af81-86857808f40b |
id |
ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:b270ebe8-7d4b-4351-af81-86857808f40b |
---|---|
record_format |
openpolar |
spelling |
ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:b270ebe8-7d4b-4351-af81-86857808f40b 2023-05-15T17:30:23+02:00 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 2022-12-01 text https://doi.org/10.1038/s41598-022-24610-x https://nrc-publications.canada.ca/eng/view/ft/?id=b270ebe8-7d4b-4351-af81-86857808f40b https://nrc-publications.canada.ca/eng/view/object/?id=b270ebe8-7d4b-4351-af81-86857808f40b https://nrc-publications.canada.ca/fra/voir/objet/?id=b270ebe8-7d4b-4351-af81-86857808f40b eng eng Springer Nature issn:2045-2322 Scientific Reports, Volume: 12, Issue: 1, Publication date: 2022-12-01, Pages: 1–12 doi:10.1038/s41598-022-24610-x Creative Commons Attribution 4.0 International (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/) Creative Commons Attribution 4.0 International (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/deed.fr) CC-BY climate change geochemistry palaeoclimate article 2022 ftnrccanada https://doi.org/10.1038/s41598-022-24610-x 2022-12-11T00:01:16Z 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. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper North Atlantic National Research Council Canada: NRC Publications Archive Scientific Reports 12 1 |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
climate change geochemistry palaeoclimate |
spellingShingle |
climate change geochemistry palaeoclimate 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) |
topic_facet |
climate change geochemistry palaeoclimate |
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 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. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
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 |
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 |
Springer Nature |
publishDate |
2022 |
url |
https://doi.org/10.1038/s41598-022-24610-x https://nrc-publications.canada.ca/eng/view/ft/?id=b270ebe8-7d4b-4351-af81-86857808f40b https://nrc-publications.canada.ca/eng/view/object/?id=b270ebe8-7d4b-4351-af81-86857808f40b https://nrc-publications.canada.ca/fra/voir/objet/?id=b270ebe8-7d4b-4351-af81-86857808f40b |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
issn:2045-2322 Scientific Reports, Volume: 12, Issue: 1, Publication date: 2022-12-01, Pages: 1–12 doi:10.1038/s41598-022-24610-x |
op_rights |
Creative Commons Attribution 4.0 International (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/) Creative Commons Attribution 4.0 International (CC BY 4.0) (https://creativecommons.org/licenses/by/4.0/deed.fr) |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-022-24610-x |
container_title |
Scientific Reports |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766126756391026688 |