On timescales and reversibility of the ocean's response to enhanced Greenland Ice Sheet melting in comprehensive climate models
Abstract Warming of the North Atlantic region in climate history often was associated with massive melting of the Greenland Ice Sheet. To identify the meltwater?s impacts and isolate these from internal variability and other global warming factors, we run single-forcing simulations including small e...
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ftpubman:oai:pure.mpg.de:item_3369347 2023-08-27T04:09:41+02:00 On timescales and reversibility of the ocean's response to enhanced Greenland Ice Sheet melting in comprehensive climate models Martin, T. Biastoch, A. Lohmann, G. Mikolajewicz, U. Wang, X. 2022-03 application/pdf http://hdl.handle.net/21.11116/0000-000A-0658-D http://hdl.handle.net/21.11116/0000-000A-0F1F-5 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1029/2021GL097114 http://hdl.handle.net/21.11116/0000-000A-0658-D http://hdl.handle.net/21.11116/0000-000A-0F1F-5 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Geophysical Research Letters info:eu-repo/semantics/article 2022 ftpubman https://doi.org/10.1029/2021GL097114 2023-08-02T01:45:23Z Abstract Warming of the North Atlantic region in climate history often was associated with massive melting of the Greenland Ice Sheet. To identify the meltwater?s impacts and isolate these from internal variability and other global warming factors, we run single-forcing simulations including small ensembles using three complex climate models differing only in their ocean components. In 200-year long pre-industrial climate simulations, we identify robust consequences of abruptly increasing Greenland runoff by 0.05 Sv: sea-level rise of 44±10 cm, subpolar North Atlantic surface cooling of 0.7?C and a moderate AMOC decline of 1.1?2.0 Sv. The latter two emerge in under three decades?and reverse on the same timescale after the perturbation ends in year 100. The ocean translates the step-change perturbation into a multi-decadal to centennial signature in the deep overturning circulation. In all simulations, internal variability creates notable uncertainty in estimating trends, time of emergence and duration of the response. Article in Journal/Newspaper Greenland Ice Sheet North Atlantic Max Planck Society: MPG.PuRe Greenland Geophysical Research Letters 49 5 |
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Open Polar |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
English |
description |
Abstract Warming of the North Atlantic region in climate history often was associated with massive melting of the Greenland Ice Sheet. To identify the meltwater?s impacts and isolate these from internal variability and other global warming factors, we run single-forcing simulations including small ensembles using three complex climate models differing only in their ocean components. In 200-year long pre-industrial climate simulations, we identify robust consequences of abruptly increasing Greenland runoff by 0.05 Sv: sea-level rise of 44±10 cm, subpolar North Atlantic surface cooling of 0.7?C and a moderate AMOC decline of 1.1?2.0 Sv. The latter two emerge in under three decades?and reverse on the same timescale after the perturbation ends in year 100. The ocean translates the step-change perturbation into a multi-decadal to centennial signature in the deep overturning circulation. In all simulations, internal variability creates notable uncertainty in estimating trends, time of emergence and duration of the response. |
format |
Article in Journal/Newspaper |
author |
Martin, T. Biastoch, A. Lohmann, G. Mikolajewicz, U. Wang, X. |
spellingShingle |
Martin, T. Biastoch, A. Lohmann, G. Mikolajewicz, U. Wang, X. On timescales and reversibility of the ocean's response to enhanced Greenland Ice Sheet melting in comprehensive climate models |
author_facet |
Martin, T. Biastoch, A. Lohmann, G. Mikolajewicz, U. Wang, X. |
author_sort |
Martin, T. |
title |
On timescales and reversibility of the ocean's response to enhanced Greenland Ice Sheet melting in comprehensive climate models |
title_short |
On timescales and reversibility of the ocean's response to enhanced Greenland Ice Sheet melting in comprehensive climate models |
title_full |
On timescales and reversibility of the ocean's response to enhanced Greenland Ice Sheet melting in comprehensive climate models |
title_fullStr |
On timescales and reversibility of the ocean's response to enhanced Greenland Ice Sheet melting in comprehensive climate models |
title_full_unstemmed |
On timescales and reversibility of the ocean's response to enhanced Greenland Ice Sheet melting in comprehensive climate models |
title_sort |
on timescales and reversibility of the ocean's response to enhanced greenland ice sheet melting in comprehensive climate models |
publishDate |
2022 |
url |
http://hdl.handle.net/21.11116/0000-000A-0658-D http://hdl.handle.net/21.11116/0000-000A-0F1F-5 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet North Atlantic |
genre_facet |
Greenland Ice Sheet North Atlantic |
op_source |
Geophysical Research Letters |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2021GL097114 http://hdl.handle.net/21.11116/0000-000A-0658-D http://hdl.handle.net/21.11116/0000-000A-0F1F-5 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1029/2021GL097114 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
5 |
_version_ |
1775351256682856448 |