Last glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shifts
We reconstructed hydroclimate variability in the Yucatán Peninsula (YP) based on stalagmite oxygen and carbon isotope records from a well-studied cave system located in the northeastern YP, a region strongly influenced by Caribbean climate dynamics. The new stalagmite isotopic records span the time...
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ftpubmed:oai:pubmedcentral.nih.gov:10474098 2023-10-09T21:52:03+02:00 Last glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shifts Travis-Taylor, Leah Medina-Elizalde, Martín Karmalkar, Ambarish V. Polanco-Martinez, Josué Serrato Marks, Gabriela Burns, Stephen Lases-Hernández, Fernanda McGee, David 2023-09-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10474098/ http://www.ncbi.nlm.nih.gov/pubmed/37658086 https://doi.org/10.1038/s41598-023-40108-6 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10474098/ http://www.ncbi.nlm.nih.gov/pubmed/37658086 http://dx.doi.org/10.1038/s41598-023-40108-6 © Springer Nature Limited 2023 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/) . Sci Rep Article Text 2023 ftpubmed https://doi.org/10.1038/s41598-023-40108-6 2023-09-10T00:46:08Z We reconstructed hydroclimate variability in the Yucatán Peninsula (YP) based on stalagmite oxygen and carbon isotope records from a well-studied cave system located in the northeastern YP, a region strongly influenced by Caribbean climate dynamics. The new stalagmite isotopic records span the time interval between 43 and 26.6 ka BP, extending a previously published record from the same cave system covering the interval between 26.5 and 23.2 ka BP. Stalagmite stable isotope records show dominant decadal and multidecadal variability, and weaker variability on millennial timescales. These records suggest significant precipitation declines in the broader Caribbean region during Heinrich events 4 and 3 of ice-rafted discharge into the North Atlantic, in agreement with the antiphase pattern of precipitation variability across the equator suggested by previous studies. On millennial timescales, the stalagmite isotope records do not show the distinctive saw-tooth pattern of climate variability observed in Greenland during Dansgaard–Oeschger (DO) events, but a pattern similar to North Atlantic sea surface temperature (SST) variability. We propose that shifts in the mean position of the Intertropical Convergence Zone (ITCZ), per se, are not the dominant driver of last glacial hydroclimate variability in the YP on millennial timescales but instead that North Atlantic SSTs played a dominant role. Our results support a negative climate feedback mechanism whereby large low latitude precipitation deficits resulting from AMOC slowdown would lead to elevated salinity in the Caribbean and ultimately help reactivate AMOC and Caribbean precipitation. However, because of the unique drivers of future climate in the region, predicted twenty-first century YP precipitation reductions are unlikely to be modulated by this negative feedback mechanism. Text Greenland North Atlantic PubMed Central (PMC) Greenland Scientific Reports 13 1 |
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Article Travis-Taylor, Leah Medina-Elizalde, Martín Karmalkar, Ambarish V. Polanco-Martinez, Josué Serrato Marks, Gabriela Burns, Stephen Lases-Hernández, Fernanda McGee, David Last glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shifts |
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Article |
description |
We reconstructed hydroclimate variability in the Yucatán Peninsula (YP) based on stalagmite oxygen and carbon isotope records from a well-studied cave system located in the northeastern YP, a region strongly influenced by Caribbean climate dynamics. The new stalagmite isotopic records span the time interval between 43 and 26.6 ka BP, extending a previously published record from the same cave system covering the interval between 26.5 and 23.2 ka BP. Stalagmite stable isotope records show dominant decadal and multidecadal variability, and weaker variability on millennial timescales. These records suggest significant precipitation declines in the broader Caribbean region during Heinrich events 4 and 3 of ice-rafted discharge into the North Atlantic, in agreement with the antiphase pattern of precipitation variability across the equator suggested by previous studies. On millennial timescales, the stalagmite isotope records do not show the distinctive saw-tooth pattern of climate variability observed in Greenland during Dansgaard–Oeschger (DO) events, but a pattern similar to North Atlantic sea surface temperature (SST) variability. We propose that shifts in the mean position of the Intertropical Convergence Zone (ITCZ), per se, are not the dominant driver of last glacial hydroclimate variability in the YP on millennial timescales but instead that North Atlantic SSTs played a dominant role. Our results support a negative climate feedback mechanism whereby large low latitude precipitation deficits resulting from AMOC slowdown would lead to elevated salinity in the Caribbean and ultimately help reactivate AMOC and Caribbean precipitation. However, because of the unique drivers of future climate in the region, predicted twenty-first century YP precipitation reductions are unlikely to be modulated by this negative feedback mechanism. |
format |
Text |
author |
Travis-Taylor, Leah Medina-Elizalde, Martín Karmalkar, Ambarish V. Polanco-Martinez, Josué Serrato Marks, Gabriela Burns, Stephen Lases-Hernández, Fernanda McGee, David |
author_facet |
Travis-Taylor, Leah Medina-Elizalde, Martín Karmalkar, Ambarish V. Polanco-Martinez, Josué Serrato Marks, Gabriela Burns, Stephen Lases-Hernández, Fernanda McGee, David |
author_sort |
Travis-Taylor, Leah |
title |
Last glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shifts |
title_short |
Last glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shifts |
title_full |
Last glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shifts |
title_fullStr |
Last glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shifts |
title_full_unstemmed |
Last glacial hydroclimate variability in the Yucatán Peninsula not just driven by ITCZ shifts |
title_sort |
last glacial hydroclimate variability in the yucatán peninsula not just driven by itcz shifts |
publisher |
Nature Publishing Group UK |
publishDate |
2023 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10474098/ http://www.ncbi.nlm.nih.gov/pubmed/37658086 https://doi.org/10.1038/s41598-023-40108-6 |
geographic |
Greenland |
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Greenland |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10474098/ http://www.ncbi.nlm.nih.gov/pubmed/37658086 http://dx.doi.org/10.1038/s41598-023-40108-6 |
op_rights |
© Springer Nature Limited 2023 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/) . |
op_doi |
https://doi.org/10.1038/s41598-023-40108-6 |
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Scientific Reports |
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