Multiple causes of the Younger Dryas cold period
International audience The Younger Dryas cooling event disrupted the overall warming trend in the North Atlantic region during the last deglaciation. Climate change during the Younger Dryas was abrupt, and thus provides insights into the sensitivity of the climate system to perturbations. The sudden...
Published in: | Nature Geoscience |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://hal.archives-ouvertes.fr/hal-03218176 https://hal.archives-ouvertes.fr/hal-03218176/document https://hal.archives-ouvertes.fr/hal-03218176/file/Renssen_etal_resubm_NatureGS_Submitted.pdf https://doi.org/10.1038/ngeo2557 |
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Université de Nantes: HAL-UNIV-NANTES |
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English |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Renssen, Hans Mairesse, Aurélien Goosse, Hugues Mathiot, Pierre Heiri, Oliver Roche, Didier M. Nisancioglu, Kerim, Valdes, Paul Multiple causes of the Younger Dryas cold period |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The Younger Dryas cooling event disrupted the overall warming trend in the North Atlantic region during the last deglaciation. Climate change during the Younger Dryas was abrupt, and thus provides insights into the sensitivity of the climate system to perturbations. The sudden Younger Dryas cooling has traditionally been attributed to a shutdown of the Atlantic Meridional Overturning Circulation by meltwater discharges1 However, alternative explanations such as strong negative radiative forcing and a shift in atmospheric circulation have also been offered. Here we investigate the importance of these different forcings in coupled climate model experiments constrained by data assimilation. We find that the Younger Dryas climate signal as registered in proxy evidence is best simulated using a combination of processes: a weakened Atlantic Meridional Overturning Circulation, moderate negative radiative forcing and an altered atmospheric circulation. We conclude that none of the individual mechanisms alone provide a plausible explanation for the Younger Dryas cold period. We suggest that the triggers for abrupt climate changes such as the Younger Dryas are more complex than suggested so far, and that studies on the response of the climate system to perturbations should account for this complexity. |
author2 |
Department of Earth Sciences Amsterdam Vrije Universiteit Amsterdam Amsterdam (VU) Earth and Life Institute Louvain-La-Neuve (ELI) Université Catholique de Louvain = Catholic University of Louvain (UCL) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Oeschger Centre for Climate Change Research (OCCR) University of Bern Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Modélisation du climat (CLIM) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) University of Bergen (UiB) Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) School of Geographical Sciences Bristol University of Bristol Bristol European Project: 243908,EC:FP7:ENV,FP7-ENV-2009-1,PAST4FUTURE(2010) |
format |
Article in Journal/Newspaper |
author |
Renssen, Hans Mairesse, Aurélien Goosse, Hugues Mathiot, Pierre Heiri, Oliver Roche, Didier M. Nisancioglu, Kerim, Valdes, Paul |
author_facet |
Renssen, Hans Mairesse, Aurélien Goosse, Hugues Mathiot, Pierre Heiri, Oliver Roche, Didier M. Nisancioglu, Kerim, Valdes, Paul |
author_sort |
Renssen, Hans |
title |
Multiple causes of the Younger Dryas cold period |
title_short |
Multiple causes of the Younger Dryas cold period |
title_full |
Multiple causes of the Younger Dryas cold period |
title_fullStr |
Multiple causes of the Younger Dryas cold period |
title_full_unstemmed |
Multiple causes of the Younger Dryas cold period |
title_sort |
multiple causes of the younger dryas cold period |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.archives-ouvertes.fr/hal-03218176 https://hal.archives-ouvertes.fr/hal-03218176/document https://hal.archives-ouvertes.fr/hal-03218176/file/Renssen_etal_resubm_NatureGS_Submitted.pdf https://doi.org/10.1038/ngeo2557 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1752-0894 Nature Geoscience https://hal.archives-ouvertes.fr/hal-03218176 Nature Geoscience, Nature Publishing Group, 2015, 8 (12), pp.946-949. ⟨10.1038/ngeo2557⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.1038/ngeo2557 info:eu-repo/grantAgreement/EC/FP7/243908/EU/Climate change - Learning from the past climate/PAST4FUTURE hal-03218176 https://hal.archives-ouvertes.fr/hal-03218176 https://hal.archives-ouvertes.fr/hal-03218176/document https://hal.archives-ouvertes.fr/hal-03218176/file/Renssen_etal_resubm_NatureGS_Submitted.pdf doi:10.1038/ngeo2557 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/ngeo2557 |
container_title |
Nature Geoscience |
container_volume |
8 |
container_issue |
12 |
container_start_page |
946 |
op_container_end_page |
949 |
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1766132471464722432 |
spelling |
ftunivnantes:oai:HAL:hal-03218176v1 2023-05-15T17:33:50+02:00 Multiple causes of the Younger Dryas cold period Renssen, Hans Mairesse, Aurélien Goosse, Hugues Mathiot, Pierre Heiri, Oliver Roche, Didier M. Nisancioglu, Kerim, Valdes, Paul Department of Earth Sciences Amsterdam Vrije Universiteit Amsterdam Amsterdam (VU) Earth and Life Institute Louvain-La-Neuve (ELI) Université Catholique de Louvain = Catholic University of Louvain (UCL) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Oeschger Centre for Climate Change Research (OCCR) University of Bern Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) Modélisation du climat (CLIM) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) University of Bergen (UiB) Bjerknes Centre for Climate Research (BCCR) Department of Biological Sciences Bergen (BIO / UiB) University of Bergen (UiB)-University of Bergen (UiB) School of Geographical Sciences Bristol University of Bristol Bristol European Project: 243908,EC:FP7:ENV,FP7-ENV-2009-1,PAST4FUTURE(2010) 2015-12 https://hal.archives-ouvertes.fr/hal-03218176 https://hal.archives-ouvertes.fr/hal-03218176/document https://hal.archives-ouvertes.fr/hal-03218176/file/Renssen_etal_resubm_NatureGS_Submitted.pdf https://doi.org/10.1038/ngeo2557 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/ngeo2557 info:eu-repo/grantAgreement/EC/FP7/243908/EU/Climate change - Learning from the past climate/PAST4FUTURE hal-03218176 https://hal.archives-ouvertes.fr/hal-03218176 https://hal.archives-ouvertes.fr/hal-03218176/document https://hal.archives-ouvertes.fr/hal-03218176/file/Renssen_etal_resubm_NatureGS_Submitted.pdf doi:10.1038/ngeo2557 info:eu-repo/semantics/OpenAccess ISSN: 1752-0894 Nature Geoscience https://hal.archives-ouvertes.fr/hal-03218176 Nature Geoscience, Nature Publishing Group, 2015, 8 (12), pp.946-949. ⟨10.1038/ngeo2557⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2015 ftunivnantes https://doi.org/10.1038/ngeo2557 2022-10-18T23:32:18Z International audience The Younger Dryas cooling event disrupted the overall warming trend in the North Atlantic region during the last deglaciation. Climate change during the Younger Dryas was abrupt, and thus provides insights into the sensitivity of the climate system to perturbations. The sudden Younger Dryas cooling has traditionally been attributed to a shutdown of the Atlantic Meridional Overturning Circulation by meltwater discharges1 However, alternative explanations such as strong negative radiative forcing and a shift in atmospheric circulation have also been offered. Here we investigate the importance of these different forcings in coupled climate model experiments constrained by data assimilation. We find that the Younger Dryas climate signal as registered in proxy evidence is best simulated using a combination of processes: a weakened Atlantic Meridional Overturning Circulation, moderate negative radiative forcing and an altered atmospheric circulation. We conclude that none of the individual mechanisms alone provide a plausible explanation for the Younger Dryas cold period. We suggest that the triggers for abrupt climate changes such as the Younger Dryas are more complex than suggested so far, and that studies on the response of the climate system to perturbations should account for this complexity. Article in Journal/Newspaper North Atlantic Université de Nantes: HAL-UNIV-NANTES Nature Geoscience 8 12 946 949 |