Impact of meltwater on high-latitude early Last Interglacial climate
Recent data compilations of the early Last Interglacial period have indicated a bipolar temperature response at 130 ka, with colder-than-present temperatures in the North Atlantic and warmer-than-present temperatures in the Southern Ocean and over Antarctica. However, climate model simulations of th...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications on behalf of the European Geosciences Union
2016
|
Subjects: | |
Online Access: | https://centaur.reading.ac.uk/68121/ https://centaur.reading.ac.uk/68121/1/cp-12-1919-2016.pdf https://doi.org/10.5194/cp-12-1919-2016 |
id |
ftunivreading:oai:centaur.reading.ac.uk:68121 |
---|---|
record_format |
openpolar |
spelling |
ftunivreading:oai:centaur.reading.ac.uk:68121 2024-06-23T07:46:10+00:00 Impact of meltwater on high-latitude early Last Interglacial climate Stone, Emma J. Capron, Emilie Lunt, Daniel J. Payne, Antony J. Singarayer, Joy S. Valdes, Paul J. Wolff, Eric W. 2016-09-29 text https://centaur.reading.ac.uk/68121/ https://centaur.reading.ac.uk/68121/1/cp-12-1919-2016.pdf https://doi.org/10.5194/cp-12-1919-2016 en eng Copernicus Publications on behalf of the European Geosciences Union https://centaur.reading.ac.uk/68121/1/cp-12-1919-2016.pdf Stone, E. J., Capron, E., Lunt, D. J., Payne, A. J., Singarayer, J. S. <https://centaur.reading.ac.uk/view/creators/90005422.html>, Valdes, P. J. and Wolff, E. W. (2016) Impact of meltwater on high-latitude early Last Interglacial climate. Climate of the Past, 12 (9). pp. 1919-1932. ISSN 1814-9324 doi: https://doi.org/10.5194/cp-12-1919-2016 <https://doi.org/10.5194/cp-12-1919-2016> cc_by Article PeerReviewed 2016 ftunivreading https://doi.org/10.5194/cp-12-1919-2016 2024-06-11T15:05:53Z Recent data compilations of the early Last Interglacial period have indicated a bipolar temperature response at 130 ka, with colder-than-present temperatures in the North Atlantic and warmer-than-present temperatures in the Southern Ocean and over Antarctica. However, climate model simulations of this period have been unable to reproduce this response, when only orbital and greenhouse gas forcings are considered in a climate model framework. Using a full-complexity general circulation model we perform climate model simulations representative of 130 ka conditions which include a magnitude of freshwater forcing derived from data at this time. We show that this meltwater from the remnant Northern Hemisphere ice sheets during the glacial–interglacial transition produces a modelled climate response similar to the observed colder-than-present temperatures in the North Atlantic at 130 ka and also results in warmer-than-present temperatures in the Southern Ocean via the bipolar seesaw mechanism. Further simulations in which the West Antarctic Ice Sheet is also removed lead to warming in East Antarctica and the Southern Ocean but do not appreciably improve the model–data comparison. This integrated model–data approach provides evidence that Northern Hemisphere freshwater forcing is an important player in the evolution of early Last Interglacial climate. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Ice Sheet North Atlantic Southern Ocean CentAUR: Central Archive at the University of Reading Antarctic Southern Ocean East Antarctica West Antarctic Ice Sheet Climate of the Past 12 9 1919 1932 |
institution |
Open Polar |
collection |
CentAUR: Central Archive at the University of Reading |
op_collection_id |
ftunivreading |
language |
English |
description |
Recent data compilations of the early Last Interglacial period have indicated a bipolar temperature response at 130 ka, with colder-than-present temperatures in the North Atlantic and warmer-than-present temperatures in the Southern Ocean and over Antarctica. However, climate model simulations of this period have been unable to reproduce this response, when only orbital and greenhouse gas forcings are considered in a climate model framework. Using a full-complexity general circulation model we perform climate model simulations representative of 130 ka conditions which include a magnitude of freshwater forcing derived from data at this time. We show that this meltwater from the remnant Northern Hemisphere ice sheets during the glacial–interglacial transition produces a modelled climate response similar to the observed colder-than-present temperatures in the North Atlantic at 130 ka and also results in warmer-than-present temperatures in the Southern Ocean via the bipolar seesaw mechanism. Further simulations in which the West Antarctic Ice Sheet is also removed lead to warming in East Antarctica and the Southern Ocean but do not appreciably improve the model–data comparison. This integrated model–data approach provides evidence that Northern Hemisphere freshwater forcing is an important player in the evolution of early Last Interglacial climate. |
format |
Article in Journal/Newspaper |
author |
Stone, Emma J. Capron, Emilie Lunt, Daniel J. Payne, Antony J. Singarayer, Joy S. Valdes, Paul J. Wolff, Eric W. |
spellingShingle |
Stone, Emma J. Capron, Emilie Lunt, Daniel J. Payne, Antony J. Singarayer, Joy S. Valdes, Paul J. Wolff, Eric W. Impact of meltwater on high-latitude early Last Interglacial climate |
author_facet |
Stone, Emma J. Capron, Emilie Lunt, Daniel J. Payne, Antony J. Singarayer, Joy S. Valdes, Paul J. Wolff, Eric W. |
author_sort |
Stone, Emma J. |
title |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_short |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_full |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_fullStr |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_full_unstemmed |
Impact of meltwater on high-latitude early Last Interglacial climate |
title_sort |
impact of meltwater on high-latitude early last interglacial climate |
publisher |
Copernicus Publications on behalf of the European Geosciences Union |
publishDate |
2016 |
url |
https://centaur.reading.ac.uk/68121/ https://centaur.reading.ac.uk/68121/1/cp-12-1919-2016.pdf https://doi.org/10.5194/cp-12-1919-2016 |
geographic |
Antarctic Southern Ocean East Antarctica West Antarctic Ice Sheet |
geographic_facet |
Antarctic Southern Ocean East Antarctica West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Sheet North Atlantic Southern Ocean |
op_relation |
https://centaur.reading.ac.uk/68121/1/cp-12-1919-2016.pdf Stone, E. J., Capron, E., Lunt, D. J., Payne, A. J., Singarayer, J. S. <https://centaur.reading.ac.uk/view/creators/90005422.html>, Valdes, P. J. and Wolff, E. W. (2016) Impact of meltwater on high-latitude early Last Interglacial climate. Climate of the Past, 12 (9). pp. 1919-1932. ISSN 1814-9324 doi: https://doi.org/10.5194/cp-12-1919-2016 <https://doi.org/10.5194/cp-12-1919-2016> |
op_rights |
cc_by |
op_doi |
https://doi.org/10.5194/cp-12-1919-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
9 |
container_start_page |
1919 |
op_container_end_page |
1932 |
_version_ |
1802644290138013696 |