A volcanically triggered regime shift in the subpolar North Atlantic Ocean as a possible origin of the Little Ice Age
Among the climatological events of the last millennium, the Northern Hemisphere Medieval Climate Anomaly succeeded by the Little Ice Age are of exceptional importance. The origin of these regional climate anomalies remains a subject of debate and besides external influences like solar and volcanic a...
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ftleibnizopen:oai:oai.leibnizopen.de:4v0pF4cBdbrxVwz6VU_h 2023-05-15T17:24:15+02:00 A volcanically triggered regime shift in the subpolar North Atlantic Ocean as a possible origin of the Little Ice Age Schleussner, C.F. Feulner, G. 2013 application/pdf https://doi.org/10.34657/730 https://oa.tib.eu/renate/handle/123456789/633 eng eng München : European Geopyhsical Union CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ Climate of the Past, Volume 8, Issue 3, Page 1321-1330 climatology decadal variation gyre Little Ice Age numerical model reconstruction regional climate sea ice stochasticity timescale volcanic eruption volcanology 550 article Text 2013 ftleibnizopen https://doi.org/10.34657/730 2023-03-26T23:31:27Z Among the climatological events of the last millennium, the Northern Hemisphere Medieval Climate Anomaly succeeded by the Little Ice Age are of exceptional importance. The origin of these regional climate anomalies remains a subject of debate and besides external influences like solar and volcanic activity, internal dynamics of the climate system might have also played a dominant role. Here, we present transient last millennium simulations of the fully coupled model of intermediate complexity Climber 3α forced with stochastically reconstructed wind-stress fields. Our results indicate that short-lived volcanic eruptions might have triggered a cascade of sea ice–ocean feedbacks in the North Atlantic, ultimately leading to a persistent regime shift in the ocean circulation. We find that an increase in the Nordic Sea sea-ice extent on decadal timescales as a consequence of major volcanic eruptions in our model leads to a spin-up of the subpolar gyre and a weakened Atlantic meridional overturning circulation, eventually causing a persistent, basin-wide cooling. These results highlight the importance of regional climate feedbacks such as a regime shift in the subpolar gyre circulation for understanding the dynamics of past and future climate. publishedVersion Article in Journal/Newspaper Nordic Sea North Atlantic Sea ice LeibnizOpen (The Leibniz Association) |
institution |
Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
climatology decadal variation gyre Little Ice Age numerical model reconstruction regional climate sea ice stochasticity timescale volcanic eruption volcanology 550 |
spellingShingle |
climatology decadal variation gyre Little Ice Age numerical model reconstruction regional climate sea ice stochasticity timescale volcanic eruption volcanology 550 Schleussner, C.F. Feulner, G. A volcanically triggered regime shift in the subpolar North Atlantic Ocean as a possible origin of the Little Ice Age |
topic_facet |
climatology decadal variation gyre Little Ice Age numerical model reconstruction regional climate sea ice stochasticity timescale volcanic eruption volcanology 550 |
description |
Among the climatological events of the last millennium, the Northern Hemisphere Medieval Climate Anomaly succeeded by the Little Ice Age are of exceptional importance. The origin of these regional climate anomalies remains a subject of debate and besides external influences like solar and volcanic activity, internal dynamics of the climate system might have also played a dominant role. Here, we present transient last millennium simulations of the fully coupled model of intermediate complexity Climber 3α forced with stochastically reconstructed wind-stress fields. Our results indicate that short-lived volcanic eruptions might have triggered a cascade of sea ice–ocean feedbacks in the North Atlantic, ultimately leading to a persistent regime shift in the ocean circulation. We find that an increase in the Nordic Sea sea-ice extent on decadal timescales as a consequence of major volcanic eruptions in our model leads to a spin-up of the subpolar gyre and a weakened Atlantic meridional overturning circulation, eventually causing a persistent, basin-wide cooling. These results highlight the importance of regional climate feedbacks such as a regime shift in the subpolar gyre circulation for understanding the dynamics of past and future climate. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Schleussner, C.F. Feulner, G. |
author_facet |
Schleussner, C.F. Feulner, G. |
author_sort |
Schleussner, C.F. |
title |
A volcanically triggered regime shift in the subpolar North Atlantic Ocean as a possible origin of the Little Ice Age |
title_short |
A volcanically triggered regime shift in the subpolar North Atlantic Ocean as a possible origin of the Little Ice Age |
title_full |
A volcanically triggered regime shift in the subpolar North Atlantic Ocean as a possible origin of the Little Ice Age |
title_fullStr |
A volcanically triggered regime shift in the subpolar North Atlantic Ocean as a possible origin of the Little Ice Age |
title_full_unstemmed |
A volcanically triggered regime shift in the subpolar North Atlantic Ocean as a possible origin of the Little Ice Age |
title_sort |
volcanically triggered regime shift in the subpolar north atlantic ocean as a possible origin of the little ice age |
publisher |
München : European Geopyhsical Union |
publishDate |
2013 |
url |
https://doi.org/10.34657/730 https://oa.tib.eu/renate/handle/123456789/633 |
genre |
Nordic Sea North Atlantic Sea ice |
genre_facet |
Nordic Sea North Atlantic Sea ice |
op_source |
Climate of the Past, Volume 8, Issue 3, Page 1321-1330 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.34657/730 |
_version_ |
1766115179603427328 |