On the identification of a Pliocene time slice for data–model comparison
The characteristics of the mid-Pliocene warm period (mPWP: 3.264–3.025 Ma BP) have been examined using geological proxies and climate models. While there is agreement between models and data, details of regional climate differ. Uncertainties in prescribed forcings and in proxy data limit the utility...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3785814 http://www.ncbi.nlm.nih.gov/pubmed/24043865 https://doi.org/10.1098/rsta.2012.0515 |
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ftpubmed:oai:pubmedcentral.nih.gov:3785814 2023-05-15T17:33:28+02:00 On the identification of a Pliocene time slice for data–model comparison Haywood, Alan M. Dolan, Aisling M. Pickering, Steven J. Dowsett, Harry J. McClymont, Erin L. Prescott, Caroline L. Salzmann, Ulrich Hill, Daniel J. Hunter, Stephen J. Lunt, Daniel J. Pope, James O. Valdes, Paul J. 2013-10-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3785814 http://www.ncbi.nlm.nih.gov/pubmed/24043865 https://doi.org/10.1098/rsta.2012.0515 en eng The Royal Society Publishing http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3785814 http://www.ncbi.nlm.nih.gov/pubmed/24043865 http://dx.doi.org/10.1098/rsta.2012.0515 http://creativecommons.org/licenses/by/3.0/ © 2013 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited. CC-BY Articles Text 2013 ftpubmed https://doi.org/10.1098/rsta.2012.0515 2013-11-03T01:53:30Z The characteristics of the mid-Pliocene warm period (mPWP: 3.264–3.025 Ma BP) have been examined using geological proxies and climate models. While there is agreement between models and data, details of regional climate differ. Uncertainties in prescribed forcings and in proxy data limit the utility of the interval to understand the dynamics of a warmer than present climate or evaluate models. This uncertainty comes, in part, from the reconstruction of a time slab rather than a time slice, where forcings required by climate models can be more adequately constrained. Here, we describe the rationale and approach for identifying a time slice(s) for Pliocene environmental reconstruction. A time slice centred on 3.205 Ma BP (3.204–3.207 Ma BP) has been identified as a priority for investigation. It is a warm interval characterized by a negative benthic oxygen isotope excursion (0.21–0.23‰) centred on marine isotope stage KM5c (KM5.3). It occurred during a period of orbital forcing that was very similar to present day. Climate model simulations indicate that proxy temperature estimates are unlikely to be significantly affected by orbital forcing for at least a precession cycle centred on the time slice, with the North Atlantic potentially being an important exception. Text North Atlantic PubMed Central (PMC) Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 371 2001 20120515 |
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Articles Haywood, Alan M. Dolan, Aisling M. Pickering, Steven J. Dowsett, Harry J. McClymont, Erin L. Prescott, Caroline L. Salzmann, Ulrich Hill, Daniel J. Hunter, Stephen J. Lunt, Daniel J. Pope, James O. Valdes, Paul J. On the identification of a Pliocene time slice for data–model comparison |
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Articles |
description |
The characteristics of the mid-Pliocene warm period (mPWP: 3.264–3.025 Ma BP) have been examined using geological proxies and climate models. While there is agreement between models and data, details of regional climate differ. Uncertainties in prescribed forcings and in proxy data limit the utility of the interval to understand the dynamics of a warmer than present climate or evaluate models. This uncertainty comes, in part, from the reconstruction of a time slab rather than a time slice, where forcings required by climate models can be more adequately constrained. Here, we describe the rationale and approach for identifying a time slice(s) for Pliocene environmental reconstruction. A time slice centred on 3.205 Ma BP (3.204–3.207 Ma BP) has been identified as a priority for investigation. It is a warm interval characterized by a negative benthic oxygen isotope excursion (0.21–0.23‰) centred on marine isotope stage KM5c (KM5.3). It occurred during a period of orbital forcing that was very similar to present day. Climate model simulations indicate that proxy temperature estimates are unlikely to be significantly affected by orbital forcing for at least a precession cycle centred on the time slice, with the North Atlantic potentially being an important exception. |
format |
Text |
author |
Haywood, Alan M. Dolan, Aisling M. Pickering, Steven J. Dowsett, Harry J. McClymont, Erin L. Prescott, Caroline L. Salzmann, Ulrich Hill, Daniel J. Hunter, Stephen J. Lunt, Daniel J. Pope, James O. Valdes, Paul J. |
author_facet |
Haywood, Alan M. Dolan, Aisling M. Pickering, Steven J. Dowsett, Harry J. McClymont, Erin L. Prescott, Caroline L. Salzmann, Ulrich Hill, Daniel J. Hunter, Stephen J. Lunt, Daniel J. Pope, James O. Valdes, Paul J. |
author_sort |
Haywood, Alan M. |
title |
On the identification of a Pliocene time slice for data–model comparison |
title_short |
On the identification of a Pliocene time slice for data–model comparison |
title_full |
On the identification of a Pliocene time slice for data–model comparison |
title_fullStr |
On the identification of a Pliocene time slice for data–model comparison |
title_full_unstemmed |
On the identification of a Pliocene time slice for data–model comparison |
title_sort |
on the identification of a pliocene time slice for data–model comparison |
publisher |
The Royal Society Publishing |
publishDate |
2013 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3785814 http://www.ncbi.nlm.nih.gov/pubmed/24043865 https://doi.org/10.1098/rsta.2012.0515 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3785814 http://www.ncbi.nlm.nih.gov/pubmed/24043865 http://dx.doi.org/10.1098/rsta.2012.0515 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ © 2013 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rsta.2012.0515 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
371 |
container_issue |
2001 |
container_start_page |
20120515 |
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1766131982682554368 |