Background conditions influence the decadal climate response to strong volcanic eruptions
Background conditions have the potential to influence the climate response to strong tropical volcanic eruptions. As a case study, we systematically assess the decadal climate response to the April 1815 Tambora eruption in a set of full-complexity Earth system model simulations. Three 10-member simu...
Published in: | Journal of Geophysical Research: Atmospheres |
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ftpubman:oai:pure.mpg.de:item_1796047 2023-08-27T04:07:58+02:00 Background conditions influence the decadal climate response to strong volcanic eruptions Zanchettin, D. Bothe, O. Graf, H. Lorenz, S. Luterbacher, J. Timmreck, C. Jungclaus, J. 2013-05-29 application/pdf http://hdl.handle.net/11858/00-001M-0000-0013-F676-A http://hdl.handle.net/11858/00-001M-0000-0013-F678-6 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1002/jgrd.50229 http://hdl.handle.net/11858/00-001M-0000-0013-F676-A http://hdl.handle.net/11858/00-001M-0000-0013-F678-6 info:eu-repo/semantics/openAccess Journal of Geophysical Research-Atmospheres info:eu-repo/semantics/article 2013 ftpubman https://doi.org/10.1002/jgrd.50229 2023-08-02T01:20:26Z Background conditions have the potential to influence the climate response to strong tropical volcanic eruptions. As a case study, we systematically assess the decadal climate response to the April 1815 Tambora eruption in a set of full-complexity Earth system model simulations. Three 10-member simulation ensembles are evaluated which describe the climate evolution of the early 19th century under (1) full-forcing conditions, (2) volcanic forcing–only conditions, and (3) volcanic forcing–only conditions excluding events preceding the Tambora eruption. The amplitude of the simulated radiative perturbation induced by the Tambora eruption depends only marginally on the background conditions. In contrast, simulated near-surface atmospheric and especially oceanic dynamics evolve significantly differently after the eruption under different background conditions. In particular, large inter-ensemble differences are found in the post-Tambora decadal evolution of oceanic heat transport and sea ice in the North Atlantic/Arctic Ocean. They reveal the existence of multiple response pathways that depend on background conditions. Background conditions are therefore not merely a source of additive noise for post-eruption decadal climate variability but actively influence the mechanisms involved in the post-eruption decadal evolution. Hence, background conditions should appropriately be accounted for in future ensemble-based numerical studies. Article in Journal/Newspaper Arctic Arctic Ocean Atlantic Arctic Atlantic-Arctic North Atlantic Sea ice Max Planck Society: MPG.PuRe Arctic Arctic Ocean Journal of Geophysical Research: Atmospheres 118 10 4090 4106 |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
English |
description |
Background conditions have the potential to influence the climate response to strong tropical volcanic eruptions. As a case study, we systematically assess the decadal climate response to the April 1815 Tambora eruption in a set of full-complexity Earth system model simulations. Three 10-member simulation ensembles are evaluated which describe the climate evolution of the early 19th century under (1) full-forcing conditions, (2) volcanic forcing–only conditions, and (3) volcanic forcing–only conditions excluding events preceding the Tambora eruption. The amplitude of the simulated radiative perturbation induced by the Tambora eruption depends only marginally on the background conditions. In contrast, simulated near-surface atmospheric and especially oceanic dynamics evolve significantly differently after the eruption under different background conditions. In particular, large inter-ensemble differences are found in the post-Tambora decadal evolution of oceanic heat transport and sea ice in the North Atlantic/Arctic Ocean. They reveal the existence of multiple response pathways that depend on background conditions. Background conditions are therefore not merely a source of additive noise for post-eruption decadal climate variability but actively influence the mechanisms involved in the post-eruption decadal evolution. Hence, background conditions should appropriately be accounted for in future ensemble-based numerical studies. |
format |
Article in Journal/Newspaper |
author |
Zanchettin, D. Bothe, O. Graf, H. Lorenz, S. Luterbacher, J. Timmreck, C. Jungclaus, J. |
spellingShingle |
Zanchettin, D. Bothe, O. Graf, H. Lorenz, S. Luterbacher, J. Timmreck, C. Jungclaus, J. Background conditions influence the decadal climate response to strong volcanic eruptions |
author_facet |
Zanchettin, D. Bothe, O. Graf, H. Lorenz, S. Luterbacher, J. Timmreck, C. Jungclaus, J. |
author_sort |
Zanchettin, D. |
title |
Background conditions influence the decadal climate response to strong volcanic eruptions |
title_short |
Background conditions influence the decadal climate response to strong volcanic eruptions |
title_full |
Background conditions influence the decadal climate response to strong volcanic eruptions |
title_fullStr |
Background conditions influence the decadal climate response to strong volcanic eruptions |
title_full_unstemmed |
Background conditions influence the decadal climate response to strong volcanic eruptions |
title_sort |
background conditions influence the decadal climate response to strong volcanic eruptions |
publishDate |
2013 |
url |
http://hdl.handle.net/11858/00-001M-0000-0013-F676-A http://hdl.handle.net/11858/00-001M-0000-0013-F678-6 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Atlantic Arctic Atlantic-Arctic North Atlantic Sea ice |
genre_facet |
Arctic Arctic Ocean Atlantic Arctic Atlantic-Arctic North Atlantic Sea ice |
op_source |
Journal of Geophysical Research-Atmospheres |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/jgrd.50229 http://hdl.handle.net/11858/00-001M-0000-0013-F676-A http://hdl.handle.net/11858/00-001M-0000-0013-F678-6 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/jgrd.50229 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
118 |
container_issue |
10 |
container_start_page |
4090 |
op_container_end_page |
4106 |
_version_ |
1775348683240374272 |