On the identification of a Pliocene time slice for data-model comparison
The characteristics of the mid-Pliocene warm period (mPWP: 3.264-3.025MaBP) 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 o...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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Online Access: | https://hdl.handle.net/1983/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f https://research-information.bris.ac.uk/en/publications/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f https://doi.org/10.1098/rsta.2012.0515 https://research-information.bris.ac.uk/ws/files/32609135/Haywood_timeslice.pdf http://rsta.royalsocietypublishing.org/content/371/2001/20120515.full |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f 2024-04-28T08:10:59+00:00 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 application/pdf https://hdl.handle.net/1983/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f https://research-information.bris.ac.uk/en/publications/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f https://doi.org/10.1098/rsta.2012.0515 https://research-information.bris.ac.uk/ws/files/32609135/Haywood_timeslice.pdf http://rsta.royalsocietypublishing.org/content/371/2001/20120515.full eng eng https://research-information.bris.ac.uk/en/publications/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f info:eu-repo/semantics/openAccess Haywood , A M , Dolan , A M , Pickering , S J , Dowsett , H J , McClymont , E L , Prescott , C L , Salzmann , U , Hill , D J , Hunter , S J , Lunt , D J , Pope , J O & Valdes , P J 2013 , ' On the identification of a Pliocene time slice for data-model comparison ' , Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences , vol. 371 , no. 2001 , 20120515 . https://doi.org/10.1098/rsta.2012.0515 Pliocene climate models climate sensitivity Earth system sensitivity SEA-SURFACE TEMPERATURES GENERAL-CIRCULATION MODEL MIDDLE PLIOCENE ICE-SHEET INSOLATION QUANTITIES JOINT INVESTIGATIONS EXPERIMENTAL-DESIGN BOUNDARY-CONDITIONS ARCTIC-OCEAN WARM PERIOD article 2013 ftubristolcris https://doi.org/10.1098/rsta.2012.0515 2024-04-03T15:23:47Z The characteristics of the mid-Pliocene warm period (mPWP: 3.264-3.025MaBP) 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 parts per thousand) 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. Article in Journal/Newspaper Arctic Arctic Ocean Ice Sheet North Atlantic University of Bristol: Bristol Research Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 371 2001 20120515 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
Pliocene climate models climate sensitivity Earth system sensitivity SEA-SURFACE TEMPERATURES GENERAL-CIRCULATION MODEL MIDDLE PLIOCENE ICE-SHEET INSOLATION QUANTITIES JOINT INVESTIGATIONS EXPERIMENTAL-DESIGN BOUNDARY-CONDITIONS ARCTIC-OCEAN WARM PERIOD |
spellingShingle |
Pliocene climate models climate sensitivity Earth system sensitivity SEA-SURFACE TEMPERATURES GENERAL-CIRCULATION MODEL MIDDLE PLIOCENE ICE-SHEET INSOLATION QUANTITIES JOINT INVESTIGATIONS EXPERIMENTAL-DESIGN BOUNDARY-CONDITIONS ARCTIC-OCEAN WARM PERIOD 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 |
topic_facet |
Pliocene climate models climate sensitivity Earth system sensitivity SEA-SURFACE TEMPERATURES GENERAL-CIRCULATION MODEL MIDDLE PLIOCENE ICE-SHEET INSOLATION QUANTITIES JOINT INVESTIGATIONS EXPERIMENTAL-DESIGN BOUNDARY-CONDITIONS ARCTIC-OCEAN WARM PERIOD |
description |
The characteristics of the mid-Pliocene warm period (mPWP: 3.264-3.025MaBP) 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 parts per thousand) 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 |
Article in Journal/Newspaper |
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 |
publishDate |
2013 |
url |
https://hdl.handle.net/1983/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f https://research-information.bris.ac.uk/en/publications/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f https://doi.org/10.1098/rsta.2012.0515 https://research-information.bris.ac.uk/ws/files/32609135/Haywood_timeslice.pdf http://rsta.royalsocietypublishing.org/content/371/2001/20120515.full |
genre |
Arctic Arctic Ocean Ice Sheet North Atlantic |
genre_facet |
Arctic Arctic Ocean Ice Sheet North Atlantic |
op_source |
Haywood , A M , Dolan , A M , Pickering , S J , Dowsett , H J , McClymont , E L , Prescott , C L , Salzmann , U , Hill , D J , Hunter , S J , Lunt , D J , Pope , J O & Valdes , P J 2013 , ' On the identification of a Pliocene time slice for data-model comparison ' , Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences , vol. 371 , no. 2001 , 20120515 . https://doi.org/10.1098/rsta.2012.0515 |
op_relation |
https://research-information.bris.ac.uk/en/publications/61f36f5e-cab9-4d7e-a7e9-17a2b65d5f6f |
op_rights |
info:eu-repo/semantics/openAccess |
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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1797578615300292608 |