Synchronous precipitation reduction in the American Tropics associated with Heinrich 2
During the last ice age temperature in the North Atlantic oscillated in cycles known as Dansgaard-Oeschger (D-O) events. The magnitude of Caribbean hydroclimate change associated with D-O variability and particularly with stadial intervals, remains poorly constrained by paleoclimate records. We pres...
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ftpubmed:oai:pubmedcentral.nih.gov:5593979 2023-05-15T17:33:33+02:00 Synchronous precipitation reduction in the American Tropics associated with Heinrich 2 Medina-Elizalde, Martín Burns, Stephen J. Polanco-Martinez, Josué Lases-Hernández, Fernanda Bradley, Raymond Wang, Hao-Cheng Shen, Chuan-Chou 2017-09-11 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5593979/ http://www.ncbi.nlm.nih.gov/pubmed/28894294 https://doi.org/10.1038/s41598-017-11742-8 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5593979/ http://www.ncbi.nlm.nih.gov/pubmed/28894294 http://dx.doi.org/10.1038/s41598-017-11742-8 © The Author(s) 2017 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2017 ftpubmed https://doi.org/10.1038/s41598-017-11742-8 2017-09-17T01:26:33Z During the last ice age temperature in the North Atlantic oscillated in cycles known as Dansgaard-Oeschger (D-O) events. The magnitude of Caribbean hydroclimate change associated with D-O variability and particularly with stadial intervals, remains poorly constrained by paleoclimate records. We present a 3.3 thousand-year long stalagmite δ18O record from the Yucatan Peninsula (YP) that spans the interval between 26.5 and 23.2 thousand years before present. We estimate quantitative precipitation variability and the high resolution and dating accuracy of this record allow us to investigate how rainfall in the region responds to D-O events. Quantitative precipitation estimates are based on observed regional amount effect variability, last glacial paleotemperature records, and estimates of the last glacial oxygen isotopic composition of precipitation based on global circulation models (GCMs). The new precipitation record suggests significant low latitude hydrological responses to internal modes of climate variability and supports a role of Caribbean hydroclimate in helping Atlantic Meridional Overturning Circulation recovery during D-O events. Significant in-phase precipitation reduction across the equator in the tropical Americas associated with Heinrich event 2 is suggested by available speleothem oxygen isotope records. Text North Atlantic PubMed Central (PMC) Scientific Reports 7 1 |
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Article Medina-Elizalde, Martín Burns, Stephen J. Polanco-Martinez, Josué Lases-Hernández, Fernanda Bradley, Raymond Wang, Hao-Cheng Shen, Chuan-Chou Synchronous precipitation reduction in the American Tropics associated with Heinrich 2 |
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description |
During the last ice age temperature in the North Atlantic oscillated in cycles known as Dansgaard-Oeschger (D-O) events. The magnitude of Caribbean hydroclimate change associated with D-O variability and particularly with stadial intervals, remains poorly constrained by paleoclimate records. We present a 3.3 thousand-year long stalagmite δ18O record from the Yucatan Peninsula (YP) that spans the interval between 26.5 and 23.2 thousand years before present. We estimate quantitative precipitation variability and the high resolution and dating accuracy of this record allow us to investigate how rainfall in the region responds to D-O events. Quantitative precipitation estimates are based on observed regional amount effect variability, last glacial paleotemperature records, and estimates of the last glacial oxygen isotopic composition of precipitation based on global circulation models (GCMs). The new precipitation record suggests significant low latitude hydrological responses to internal modes of climate variability and supports a role of Caribbean hydroclimate in helping Atlantic Meridional Overturning Circulation recovery during D-O events. Significant in-phase precipitation reduction across the equator in the tropical Americas associated with Heinrich event 2 is suggested by available speleothem oxygen isotope records. |
format |
Text |
author |
Medina-Elizalde, Martín Burns, Stephen J. Polanco-Martinez, Josué Lases-Hernández, Fernanda Bradley, Raymond Wang, Hao-Cheng Shen, Chuan-Chou |
author_facet |
Medina-Elizalde, Martín Burns, Stephen J. Polanco-Martinez, Josué Lases-Hernández, Fernanda Bradley, Raymond Wang, Hao-Cheng Shen, Chuan-Chou |
author_sort |
Medina-Elizalde, Martín |
title |
Synchronous precipitation reduction in the American Tropics associated with Heinrich 2 |
title_short |
Synchronous precipitation reduction in the American Tropics associated with Heinrich 2 |
title_full |
Synchronous precipitation reduction in the American Tropics associated with Heinrich 2 |
title_fullStr |
Synchronous precipitation reduction in the American Tropics associated with Heinrich 2 |
title_full_unstemmed |
Synchronous precipitation reduction in the American Tropics associated with Heinrich 2 |
title_sort |
synchronous precipitation reduction in the american tropics associated with heinrich 2 |
publisher |
Nature Publishing Group UK |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5593979/ http://www.ncbi.nlm.nih.gov/pubmed/28894294 https://doi.org/10.1038/s41598-017-11742-8 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5593979/ http://www.ncbi.nlm.nih.gov/pubmed/28894294 http://dx.doi.org/10.1038/s41598-017-11742-8 |
op_rights |
© The Author(s) 2017 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-017-11742-8 |
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Scientific Reports |
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