Last interglacial temperature evolution – a model inter-comparison
There is a growing number of proxy-based reconstructions detailing the climatic changes that occurred during the last interglacial period (LIG). This period is of special interest, because large parts of the globe were characterized by a warmer-than-present-day climate, making this period an interes...
Published in: | Climate of the Past |
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Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
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Online Access: | https://hdl.handle.net/1983/7c9965d1-cbf7-4e61-b678-0d9a4f93932b https://research-information.bris.ac.uk/en/publications/7c9965d1-cbf7-4e61-b678-0d9a4f93932b https://doi.org/10.5194/cp-9-605-2013 https://research-information.bris.ac.uk/ws/files/34705843/cp_9_605_2013.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/7c9965d1-cbf7-4e61-b678-0d9a4f93932b 2024-04-28T08:12:15+00:00 Last interglacial temperature evolution – a model inter-comparison Bakker, P Stone, E J Charbit, S M, Groger Krebs-Kanzow, U Ritz, S P Varma, V Khon, V Lunt, D J Mikolajewicz, U Prange, M Renssen, H Schneider, B Schulz, M 2013-03-11 application/pdf https://hdl.handle.net/1983/7c9965d1-cbf7-4e61-b678-0d9a4f93932b https://research-information.bris.ac.uk/en/publications/7c9965d1-cbf7-4e61-b678-0d9a4f93932b https://doi.org/10.5194/cp-9-605-2013 https://research-information.bris.ac.uk/ws/files/34705843/cp_9_605_2013.pdf eng eng https://research-information.bris.ac.uk/en/publications/7c9965d1-cbf7-4e61-b678-0d9a4f93932b info:eu-repo/semantics/openAccess Bakker , P , Stone , E J , Charbit , S , M , G , Krebs-Kanzow , U , Ritz , S P , Varma , V , Khon , V , Lunt , D J , Mikolajewicz , U , Prange , M , Renssen , H , Schneider , B & Schulz , M 2013 , ' Last interglacial temperature evolution – a model inter-comparison ' , Climate of the Past , vol. 9 , pp. 605-619 . https://doi.org/10.5194/cp-9-605-2013 last interglacial article 2013 ftubristolcris https://doi.org/10.5194/cp-9-605-2013 2024-04-03T15:17:07Z There is a growing number of proxy-based reconstructions detailing the climatic changes that occurred during the last interglacial period (LIG). This period is of special interest, because large parts of the globe were characterized by a warmer-than-present-day climate, making this period an interesting test bed for climate models in light of projected global warming. However, mainly because synchronizing the different palaeoclimatic records is difficult, there is no consensus on a global picture of LIG temperature changes. Here we present the first model inter-comparison of transient simulations covering the LIG period. By comparing the different simulations, we aim at investigating the common signal in the LIG temperature evolution, investigating the main driving forces behind it and at listing the climate feedbacks which cause the most apparent inter-model differences. The model inter-comparison shows a robust Northern Hemisphere July temperature evolution characterized by a maximum between 130–125 ka BP with temperatures 0.3 to 5.3 K above present day. A Southern Hemisphere July temperature maximum, −1.3 to 2.5 K at around 128 ka BP, is only found when changes in the greenhouse gas concentrations are included. The robustness of simulated January temperatures is large in the Southern Hemisphere and the mid-latitudes of the Northern Hemisphere. For these regions maximum January temperature anomalies of respectively −1 to 1.2 K and −0.8 to 2.1 K are simulated for the period after 121 ka BP. In both hemispheres these temperature maxima are in line with the maximum in local summer insolation. In a number of specific regions, a common temperature evolution is not found amongst the models. We show that this is related to feedbacks within the climate system which largely determine the simulated LIG temperature evolution in these regions. Firstly, in the Arctic region, changes in the summer sea-ice cover control the evolution of LIG winter temperatures. Secondly, for the Atlantic region, the Southern Ocean and the North ... Article in Journal/Newspaper Arctic Global warming Sea ice Southern Ocean University of Bristol: Bristol Research Climate of the Past 9 2 605 619 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
last interglacial |
spellingShingle |
last interglacial Bakker, P Stone, E J Charbit, S M, Groger Krebs-Kanzow, U Ritz, S P Varma, V Khon, V Lunt, D J Mikolajewicz, U Prange, M Renssen, H Schneider, B Schulz, M Last interglacial temperature evolution – a model inter-comparison |
topic_facet |
last interglacial |
description |
There is a growing number of proxy-based reconstructions detailing the climatic changes that occurred during the last interglacial period (LIG). This period is of special interest, because large parts of the globe were characterized by a warmer-than-present-day climate, making this period an interesting test bed for climate models in light of projected global warming. However, mainly because synchronizing the different palaeoclimatic records is difficult, there is no consensus on a global picture of LIG temperature changes. Here we present the first model inter-comparison of transient simulations covering the LIG period. By comparing the different simulations, we aim at investigating the common signal in the LIG temperature evolution, investigating the main driving forces behind it and at listing the climate feedbacks which cause the most apparent inter-model differences. The model inter-comparison shows a robust Northern Hemisphere July temperature evolution characterized by a maximum between 130–125 ka BP with temperatures 0.3 to 5.3 K above present day. A Southern Hemisphere July temperature maximum, −1.3 to 2.5 K at around 128 ka BP, is only found when changes in the greenhouse gas concentrations are included. The robustness of simulated January temperatures is large in the Southern Hemisphere and the mid-latitudes of the Northern Hemisphere. For these regions maximum January temperature anomalies of respectively −1 to 1.2 K and −0.8 to 2.1 K are simulated for the period after 121 ka BP. In both hemispheres these temperature maxima are in line with the maximum in local summer insolation. In a number of specific regions, a common temperature evolution is not found amongst the models. We show that this is related to feedbacks within the climate system which largely determine the simulated LIG temperature evolution in these regions. Firstly, in the Arctic region, changes in the summer sea-ice cover control the evolution of LIG winter temperatures. Secondly, for the Atlantic region, the Southern Ocean and the North ... |
format |
Article in Journal/Newspaper |
author |
Bakker, P Stone, E J Charbit, S M, Groger Krebs-Kanzow, U Ritz, S P Varma, V Khon, V Lunt, D J Mikolajewicz, U Prange, M Renssen, H Schneider, B Schulz, M |
author_facet |
Bakker, P Stone, E J Charbit, S M, Groger Krebs-Kanzow, U Ritz, S P Varma, V Khon, V Lunt, D J Mikolajewicz, U Prange, M Renssen, H Schneider, B Schulz, M |
author_sort |
Bakker, P |
title |
Last interglacial temperature evolution – a model inter-comparison |
title_short |
Last interglacial temperature evolution – a model inter-comparison |
title_full |
Last interglacial temperature evolution – a model inter-comparison |
title_fullStr |
Last interglacial temperature evolution – a model inter-comparison |
title_full_unstemmed |
Last interglacial temperature evolution – a model inter-comparison |
title_sort |
last interglacial temperature evolution – a model inter-comparison |
publishDate |
2013 |
url |
https://hdl.handle.net/1983/7c9965d1-cbf7-4e61-b678-0d9a4f93932b https://research-information.bris.ac.uk/en/publications/7c9965d1-cbf7-4e61-b678-0d9a4f93932b https://doi.org/10.5194/cp-9-605-2013 https://research-information.bris.ac.uk/ws/files/34705843/cp_9_605_2013.pdf |
genre |
Arctic Global warming Sea ice Southern Ocean |
genre_facet |
Arctic Global warming Sea ice Southern Ocean |
op_source |
Bakker , P , Stone , E J , Charbit , S , M , G , Krebs-Kanzow , U , Ritz , S P , Varma , V , Khon , V , Lunt , D J , Mikolajewicz , U , Prange , M , Renssen , H , Schneider , B & Schulz , M 2013 , ' Last interglacial temperature evolution – a model inter-comparison ' , Climate of the Past , vol. 9 , pp. 605-619 . https://doi.org/10.5194/cp-9-605-2013 |
op_relation |
https://research-information.bris.ac.uk/en/publications/7c9965d1-cbf7-4e61-b678-0d9a4f93932b |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-9-605-2013 |
container_title |
Climate of the Past |
container_volume |
9 |
container_issue |
2 |
container_start_page |
605 |
op_container_end_page |
619 |
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