Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period
During an interval of the Late Pliocene, referred to here as the mid-Pliocene Warm Period (mPWP; 3.264 to 3.025 million years ago), global mean temperature was similar to that predicted for the end of this century, and atmospheric carbon dioxide concentrations were higher than pre-industrial levels....
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Online Access: | https://doi.org/10.5194/cp-11-403-2015 https://doaj.org/article/f71a08cb5b1e449a86c181372f2564ad |
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ftdoajarticles:oai:doaj.org/article:f71a08cb5b1e449a86c181372f2564ad 2023-05-15T16:26:18+02:00 Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period A. M. Dolan S. J. Hunter D. J. Hill A. M. Haywood S. J. Koenig B. L. Otto-Bliesner A. Abe-Ouchi F. Bragg W.-L. Chan M. A. Chandler C. Contoux A. Jost Y. Kamae G. Lohmann D. J. Lunt G. Ramstein N. A. Rosenbloom L. Sohl C. Stepanek H. Ueda Q. Yan Z. Zhang 2015-03-01T00:00:00Z https://doi.org/10.5194/cp-11-403-2015 https://doaj.org/article/f71a08cb5b1e449a86c181372f2564ad EN eng Copernicus Publications http://www.clim-past.net/11/403/2015/cp-11-403-2015.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 doi:10.5194/cp-11-403-2015 https://doaj.org/article/f71a08cb5b1e449a86c181372f2564ad Climate of the Past, Vol 11, Iss 3, Pp 403-424 (2015) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2015 ftdoajarticles https://doi.org/10.5194/cp-11-403-2015 2022-12-31T09:22:25Z During an interval of the Late Pliocene, referred to here as the mid-Pliocene Warm Period (mPWP; 3.264 to 3.025 million years ago), global mean temperature was similar to that predicted for the end of this century, and atmospheric carbon dioxide concentrations were higher than pre-industrial levels. Sea level was also higher than today, implying a significant reduction in the extent of the ice sheets. Thus, the mPWP provides a natural laboratory in which to investigate the long-term response of the Earth's ice sheets and sea level in a warmer-than-present-day world. At present, our understanding of the Greenland ice sheet during the mPWP is generally based upon predictions using single climate and ice sheet models. Therefore, it is essential that the model dependency of these results is assessed. The Pliocene Model Intercomparison Project (PlioMIP) has brought together nine international modelling groups to simulate the warm climate of the Pliocene. Here we use the climatological fields derived from the results of the 15 PlioMIP climate models to force an offline ice sheet model. We show that mPWP ice sheet reconstructions are highly dependent upon the forcing climatology used, with Greenland reconstructions ranging from an ice-free state to a near-modern ice sheet. An analysis of the surface albedo variability between the climate models over Greenland offers insights into the drivers of inter-model differences. As we demonstrate that the climate model dependency of our results is high, we highlight the necessity of data-based constraints of ice extent in developing our understanding of the mPWP Greenland ice sheet. Article in Journal/Newspaper Greenland Ice Sheet Directory of Open Access Journals: DOAJ Articles Greenland Climate of the Past 11 3 403 424 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 A. M. Dolan S. J. Hunter D. J. Hill A. M. Haywood S. J. Koenig B. L. Otto-Bliesner A. Abe-Ouchi F. Bragg W.-L. Chan M. A. Chandler C. Contoux A. Jost Y. Kamae G. Lohmann D. J. Lunt G. Ramstein N. A. Rosenbloom L. Sohl C. Stepanek H. Ueda Q. Yan Z. Zhang Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
During an interval of the Late Pliocene, referred to here as the mid-Pliocene Warm Period (mPWP; 3.264 to 3.025 million years ago), global mean temperature was similar to that predicted for the end of this century, and atmospheric carbon dioxide concentrations were higher than pre-industrial levels. Sea level was also higher than today, implying a significant reduction in the extent of the ice sheets. Thus, the mPWP provides a natural laboratory in which to investigate the long-term response of the Earth's ice sheets and sea level in a warmer-than-present-day world. At present, our understanding of the Greenland ice sheet during the mPWP is generally based upon predictions using single climate and ice sheet models. Therefore, it is essential that the model dependency of these results is assessed. The Pliocene Model Intercomparison Project (PlioMIP) has brought together nine international modelling groups to simulate the warm climate of the Pliocene. Here we use the climatological fields derived from the results of the 15 PlioMIP climate models to force an offline ice sheet model. We show that mPWP ice sheet reconstructions are highly dependent upon the forcing climatology used, with Greenland reconstructions ranging from an ice-free state to a near-modern ice sheet. An analysis of the surface albedo variability between the climate models over Greenland offers insights into the drivers of inter-model differences. As we demonstrate that the climate model dependency of our results is high, we highlight the necessity of data-based constraints of ice extent in developing our understanding of the mPWP Greenland ice sheet. |
format |
Article in Journal/Newspaper |
author |
A. M. Dolan S. J. Hunter D. J. Hill A. M. Haywood S. J. Koenig B. L. Otto-Bliesner A. Abe-Ouchi F. Bragg W.-L. Chan M. A. Chandler C. Contoux A. Jost Y. Kamae G. Lohmann D. J. Lunt G. Ramstein N. A. Rosenbloom L. Sohl C. Stepanek H. Ueda Q. Yan Z. Zhang |
author_facet |
A. M. Dolan S. J. Hunter D. J. Hill A. M. Haywood S. J. Koenig B. L. Otto-Bliesner A. Abe-Ouchi F. Bragg W.-L. Chan M. A. Chandler C. Contoux A. Jost Y. Kamae G. Lohmann D. J. Lunt G. Ramstein N. A. Rosenbloom L. Sohl C. Stepanek H. Ueda Q. Yan Z. Zhang |
author_sort |
A. M. Dolan |
title |
Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period |
title_short |
Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period |
title_full |
Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period |
title_fullStr |
Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period |
title_full_unstemmed |
Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period |
title_sort |
using results from the pliomip ensemble to investigate the greenland ice sheet during the mid-pliocene warm period |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/cp-11-403-2015 https://doaj.org/article/f71a08cb5b1e449a86c181372f2564ad |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_source |
Climate of the Past, Vol 11, Iss 3, Pp 403-424 (2015) |
op_relation |
http://www.clim-past.net/11/403/2015/cp-11-403-2015.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 1814-9324 1814-9332 doi:10.5194/cp-11-403-2015 https://doaj.org/article/f71a08cb5b1e449a86c181372f2564ad |
op_doi |
https://doi.org/10.5194/cp-11-403-2015 |
container_title |
Climate of the Past |
container_volume |
11 |
container_issue |
3 |
container_start_page |
403 |
op_container_end_page |
424 |
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1766015200758071296 |