Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition
It is generally considered that the perennial glaciation of Greenland lasting several orbital cycles began around 2.7 Ma along with the intensification of Northern Hemisphere glaciation (NHG). Both data and model studies have demonstrated that a decline in atmospheric pCO2 was instrumental in establ...
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ftpubmed:oai:pubmedcentral.nih.gov:6232173 2023-05-15T16:26:30+02:00 Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition Tan, Ning Ladant, Jean-Baptiste Ramstein, Gilles Dumas, Christophe Bachem, Paul Jansen, Eystein 2018-11-12 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6232173/ http://www.ncbi.nlm.nih.gov/pubmed/30420596 https://doi.org/10.1038/s41467-018-07206-w en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6232173/ http://www.ncbi.nlm.nih.gov/pubmed/30420596 http://dx.doi.org/10.1038/s41467-018-07206-w © The Author(s) 2018 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 2018 ftpubmed https://doi.org/10.1038/s41467-018-07206-w 2018-11-18T02:17:36Z It is generally considered that the perennial glaciation of Greenland lasting several orbital cycles began around 2.7 Ma along with the intensification of Northern Hemisphere glaciation (NHG). Both data and model studies have demonstrated that a decline in atmospheric pCO2 was instrumental in establishing a perennial Greenland ice sheet (GrIS), yet models have generally used simplistic pCO2 constraints rather than data-inferred pCO2 evolution. Here, using a method designed for the long-term coupling of climate and cryosphere models and pCO2 scenarios from different studies, we highlight the pivotal role of pCO2 on the GrIS expansion across the Plio-Pleistocene Transition (PPT, 3.0–2.5 Ma), in particular in the range between 280 and 320 ppm. Good qualitative agreement is obtained between various IRD reconstructions and some of the possible evolutions of the GrIS simulated by our model. Our results underline the dynamism of the GrIS waxing and waning under pCO2 levels similar to or lower than today, which supports recent evidence of a dynamic GrIS during the Plio-Pleistocene. Text Greenland Ice Sheet PubMed Central (PMC) Greenland Nature Communications 9 1 |
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Article Tan, Ning Ladant, Jean-Baptiste Ramstein, Gilles Dumas, Christophe Bachem, Paul Jansen, Eystein Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition |
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It is generally considered that the perennial glaciation of Greenland lasting several orbital cycles began around 2.7 Ma along with the intensification of Northern Hemisphere glaciation (NHG). Both data and model studies have demonstrated that a decline in atmospheric pCO2 was instrumental in establishing a perennial Greenland ice sheet (GrIS), yet models have generally used simplistic pCO2 constraints rather than data-inferred pCO2 evolution. Here, using a method designed for the long-term coupling of climate and cryosphere models and pCO2 scenarios from different studies, we highlight the pivotal role of pCO2 on the GrIS expansion across the Plio-Pleistocene Transition (PPT, 3.0–2.5 Ma), in particular in the range between 280 and 320 ppm. Good qualitative agreement is obtained between various IRD reconstructions and some of the possible evolutions of the GrIS simulated by our model. Our results underline the dynamism of the GrIS waxing and waning under pCO2 levels similar to or lower than today, which supports recent evidence of a dynamic GrIS during the Plio-Pleistocene. |
format |
Text |
author |
Tan, Ning Ladant, Jean-Baptiste Ramstein, Gilles Dumas, Christophe Bachem, Paul Jansen, Eystein |
author_facet |
Tan, Ning Ladant, Jean-Baptiste Ramstein, Gilles Dumas, Christophe Bachem, Paul Jansen, Eystein |
author_sort |
Tan, Ning |
title |
Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition |
title_short |
Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition |
title_full |
Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition |
title_fullStr |
Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition |
title_full_unstemmed |
Dynamic Greenland ice sheet driven by pCO2 variations across the Pliocene Pleistocene transition |
title_sort |
dynamic greenland ice sheet driven by pco2 variations across the pliocene pleistocene transition |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6232173/ http://www.ncbi.nlm.nih.gov/pubmed/30420596 https://doi.org/10.1038/s41467-018-07206-w |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6232173/ http://www.ncbi.nlm.nih.gov/pubmed/30420596 http://dx.doi.org/10.1038/s41467-018-07206-w |
op_rights |
© The Author(s) 2018 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/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-018-07206-w |
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Nature Communications |
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9 |
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1766015422052696064 |