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...
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ftdoajarticles:oai:doaj.org/article:0760909349d3459d951754cb7d044559 2023-05-15T15:14:45+02:00 Last interglacial temperature evolution – a model inter-comparison P. Bakker E. J. Stone S. Charbit M. Gröger U. Krebs-Kanzow S. P. Ritz V. Varma V. Khon D. J. Lunt U. Mikolajewicz M. Prange H. Renssen B. Schneider M. Schulz 2013-03-01T00:00:00Z https://doi.org/10.5194/cp-9-605-2013 https://doaj.org/article/0760909349d3459d951754cb7d044559 EN eng Copernicus Publications http://www.clim-past.net/9/605/2013/cp-9-605-2013.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-9-605-2013 1814-9324 1814-9332 https://doaj.org/article/0760909349d3459d951754cb7d044559 Climate of the Past, Vol 9, Iss 2, Pp 605-619 (2013) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2013 ftdoajarticles https://doi.org/10.5194/cp-9-605-2013 2022-12-31T14:01:33Z 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 ... Article in Journal/Newspaper Arctic Global warming Sea ice Southern Ocean Directory of Open Access Journals: DOAJ Articles Arctic Southern Ocean Climate of the Past 9 2 605 619 |
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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 P. Bakker E. J. Stone S. Charbit M. Gröger U. Krebs-Kanzow S. P. Ritz V. Varma V. Khon D. J. Lunt U. Mikolajewicz M. Prange H. Renssen B. Schneider M. Schulz Last interglacial temperature evolution – a model inter-comparison |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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 ... |
format |
Article in Journal/Newspaper |
author |
P. Bakker E. J. Stone S. Charbit M. Gröger U. Krebs-Kanzow S. P. Ritz V. Varma V. Khon D. J. Lunt U. Mikolajewicz M. Prange H. Renssen B. Schneider M. Schulz |
author_facet |
P. Bakker E. J. Stone S. Charbit M. Gröger U. Krebs-Kanzow S. P. Ritz V. Varma V. Khon D. J. Lunt U. Mikolajewicz M. Prange H. Renssen B. Schneider M. Schulz |
author_sort |
P. Bakker |
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 |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/cp-9-605-2013 https://doaj.org/article/0760909349d3459d951754cb7d044559 |
geographic |
Arctic Southern Ocean |
geographic_facet |
Arctic Southern Ocean |
genre |
Arctic Global warming Sea ice Southern Ocean |
genre_facet |
Arctic Global warming Sea ice Southern Ocean |
op_source |
Climate of the Past, Vol 9, Iss 2, Pp 605-619 (2013) |
op_relation |
http://www.clim-past.net/9/605/2013/cp-9-605-2013.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-9-605-2013 1814-9324 1814-9332 https://doaj.org/article/0760909349d3459d951754cb7d044559 |
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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