Rate-induced tipping cascades arising from interactions between the Greenland Ice Sheet and the Atlantic Meridional Overturning Circulation
The Greenland Ice Sheet (GIS) and Atlantic Meridional Overturning Circulation (AMOC) are considered tipping elements in the climate system, where global warming exceeding critical threshold levels in forcing can lead to large-scale and nonlinear reductions in ice volume and overturning strength, res...
Published in: | Earth System Dynamics |
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Copernicus Publications
2024
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00073847 2024-06-23T07:53:12+00:00 Rate-induced tipping cascades arising from interactions between the Greenland Ice Sheet and the Atlantic Meridional Overturning Circulation Klose, Ann Kristin Donges, Jonathan F. Feudel, Ulrike Winkelmann, Ricarda 2024-05 electronic https://doi.org/10.5194/esd-15-635-2024 https://noa.gwlb.de/receive/cop_mods_00073847 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071990/esd-15-635-2024.pdf https://esd.copernicus.org/articles/15/635/2024/esd-15-635-2024.pdf eng eng Copernicus Publications Earth System Dynamics -- http://www.earth-syst-dynam.net/ -- http://www.bibliothek.uni-regensburg.de/ezeit/?2578793 -- 2190-4987 https://doi.org/10.5194/esd-15-635-2024 https://noa.gwlb.de/receive/cop_mods_00073847 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071990/esd-15-635-2024.pdf https://esd.copernicus.org/articles/15/635/2024/esd-15-635-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/esd-15-635-2024 2024-06-03T23:38:30Z The Greenland Ice Sheet (GIS) and Atlantic Meridional Overturning Circulation (AMOC) are considered tipping elements in the climate system, where global warming exceeding critical threshold levels in forcing can lead to large-scale and nonlinear reductions in ice volume and overturning strength, respectively. The positive–negative feedback loop governing their interaction with a destabilizing effect on the AMOC due to ice loss and subsequent freshwater flux into the North Atlantic as well as a stabilizing effect of a net cooling around Greenland with an AMOC weakening may determine the long-term stability of both tipping elements. Here we explore the potential dynamic regimes arising from this positive–negative tipping feedback loop in a physically motivated conceptual model. Under idealized forcing scenarios we identify conditions under which different kinds of tipping cascades can occur: herein, we distinguish between overshoot/bifurcation tipping cascades, leading to tipping of both GIS and AMOC, and rate-induced tipping cascades, where the AMOC, despite not having crossed its own intrinsic tipping point, tips nonetheless due to the fast rate of ice loss from Greenland. The occurrence of these different cascades is affected by the ice sheet disintegration time and thus eventually by the imposed forcing and its timescales. Our results suggest that it is necessary not only to avoid surpassing the respective critical levels of the environmental drivers for the Greenland Ice Sheet and Atlantic Meridional Overturning Circulation, but also to respect safe rates of environmental change to mitigate potential domino effects. Article in Journal/Newspaper Greenland Ice Sheet North Atlantic Niedersächsisches Online-Archiv NOA Greenland Earth System Dynamics 15 3 635 652 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Klose, Ann Kristin Donges, Jonathan F. Feudel, Ulrike Winkelmann, Ricarda Rate-induced tipping cascades arising from interactions between the Greenland Ice Sheet and the Atlantic Meridional Overturning Circulation |
topic_facet |
article Verlagsveröffentlichung |
description |
The Greenland Ice Sheet (GIS) and Atlantic Meridional Overturning Circulation (AMOC) are considered tipping elements in the climate system, where global warming exceeding critical threshold levels in forcing can lead to large-scale and nonlinear reductions in ice volume and overturning strength, respectively. The positive–negative feedback loop governing their interaction with a destabilizing effect on the AMOC due to ice loss and subsequent freshwater flux into the North Atlantic as well as a stabilizing effect of a net cooling around Greenland with an AMOC weakening may determine the long-term stability of both tipping elements. Here we explore the potential dynamic regimes arising from this positive–negative tipping feedback loop in a physically motivated conceptual model. Under idealized forcing scenarios we identify conditions under which different kinds of tipping cascades can occur: herein, we distinguish between overshoot/bifurcation tipping cascades, leading to tipping of both GIS and AMOC, and rate-induced tipping cascades, where the AMOC, despite not having crossed its own intrinsic tipping point, tips nonetheless due to the fast rate of ice loss from Greenland. The occurrence of these different cascades is affected by the ice sheet disintegration time and thus eventually by the imposed forcing and its timescales. Our results suggest that it is necessary not only to avoid surpassing the respective critical levels of the environmental drivers for the Greenland Ice Sheet and Atlantic Meridional Overturning Circulation, but also to respect safe rates of environmental change to mitigate potential domino effects. |
format |
Article in Journal/Newspaper |
author |
Klose, Ann Kristin Donges, Jonathan F. Feudel, Ulrike Winkelmann, Ricarda |
author_facet |
Klose, Ann Kristin Donges, Jonathan F. Feudel, Ulrike Winkelmann, Ricarda |
author_sort |
Klose, Ann Kristin |
title |
Rate-induced tipping cascades arising from interactions between the Greenland Ice Sheet and the Atlantic Meridional Overturning Circulation |
title_short |
Rate-induced tipping cascades arising from interactions between the Greenland Ice Sheet and the Atlantic Meridional Overturning Circulation |
title_full |
Rate-induced tipping cascades arising from interactions between the Greenland Ice Sheet and the Atlantic Meridional Overturning Circulation |
title_fullStr |
Rate-induced tipping cascades arising from interactions between the Greenland Ice Sheet and the Atlantic Meridional Overturning Circulation |
title_full_unstemmed |
Rate-induced tipping cascades arising from interactions between the Greenland Ice Sheet and the Atlantic Meridional Overturning Circulation |
title_sort |
rate-induced tipping cascades arising from interactions between the greenland ice sheet and the atlantic meridional overturning circulation |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/esd-15-635-2024 https://noa.gwlb.de/receive/cop_mods_00073847 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071990/esd-15-635-2024.pdf https://esd.copernicus.org/articles/15/635/2024/esd-15-635-2024.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet North Atlantic |
genre_facet |
Greenland Ice Sheet North Atlantic |
op_relation |
Earth System Dynamics -- http://www.earth-syst-dynam.net/ -- http://www.bibliothek.uni-regensburg.de/ezeit/?2578793 -- 2190-4987 https://doi.org/10.5194/esd-15-635-2024 https://noa.gwlb.de/receive/cop_mods_00073847 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00071990/esd-15-635-2024.pdf https://esd.copernicus.org/articles/15/635/2024/esd-15-635-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/esd-15-635-2024 |
container_title |
Earth System Dynamics |
container_volume |
15 |
container_issue |
3 |
container_start_page |
635 |
op_container_end_page |
652 |
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1802644757943418880 |