Possibility for strong northern hemisphere high-latitude cooling under negative emissions
It is well established that a collapse or strong reduction of the Atlantic meridional overturning circulation (AMOC) would substantially cool the northern high latitudes. Here we show that there is a possibility that such cooling could be amplified under deliberate CO2 removal and result in a tempor...
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ftnorce:oai:norceresearch.brage.unit.no:11250/3046968 2023-05-15T16:37:38+02:00 Possibility for strong northern hemisphere high-latitude cooling under negative emissions Schwinger, Jörg Asaadi, Ali Goris, Nadine Lee, Hanna 2022 application/pdf https://hdl.handle.net/11250/3046968 https://doi.org/10.1038/s41467-022-28573-5 eng eng Norges forskningsråd: 294930 urn:issn:2041-1723 https://hdl.handle.net/11250/3046968 https://doi.org/10.1038/s41467-022-28573-5 cristin:1993920 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The Author(s) 2022 CC-BY Nature Communications 13 1 Peer reviewed Journal article 2022 ftnorce https://doi.org/10.1038/s41467-022-28573-5 2023-02-01T23:46:34Z It is well established that a collapse or strong reduction of the Atlantic meridional overturning circulation (AMOC) would substantially cool the northern high latitudes. Here we show that there is a possibility that such cooling could be amplified under deliberate CO2 removal and result in a temporary undershoot of a targeted temperature level. We find this behaviour in Earth system models that show a strong AMOC decline in response to anthropogenic forcing. Idealized simulations of CO2 removal with one of these models indicate that the timing of negative emissions relative to AMOC decline and recovery is key in setting the strength of the temporary cooling. We show that the pronounced temperature-fluctuations at high northern latitudes found in these simulations would entail considerable consequences for sea-ice and permafrost extent as well as for high latitude ecosystems. publishedVersion Article in Journal/Newspaper Ice permafrost Sea ice NORCE vitenarkiv (Norwegian Research Centre) Nature Communications 13 1 |
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NORCE vitenarkiv (Norwegian Research Centre) |
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English |
description |
It is well established that a collapse or strong reduction of the Atlantic meridional overturning circulation (AMOC) would substantially cool the northern high latitudes. Here we show that there is a possibility that such cooling could be amplified under deliberate CO2 removal and result in a temporary undershoot of a targeted temperature level. We find this behaviour in Earth system models that show a strong AMOC decline in response to anthropogenic forcing. Idealized simulations of CO2 removal with one of these models indicate that the timing of negative emissions relative to AMOC decline and recovery is key in setting the strength of the temporary cooling. We show that the pronounced temperature-fluctuations at high northern latitudes found in these simulations would entail considerable consequences for sea-ice and permafrost extent as well as for high latitude ecosystems. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Schwinger, Jörg Asaadi, Ali Goris, Nadine Lee, Hanna |
spellingShingle |
Schwinger, Jörg Asaadi, Ali Goris, Nadine Lee, Hanna Possibility for strong northern hemisphere high-latitude cooling under negative emissions |
author_facet |
Schwinger, Jörg Asaadi, Ali Goris, Nadine Lee, Hanna |
author_sort |
Schwinger, Jörg |
title |
Possibility for strong northern hemisphere high-latitude cooling under negative emissions |
title_short |
Possibility for strong northern hemisphere high-latitude cooling under negative emissions |
title_full |
Possibility for strong northern hemisphere high-latitude cooling under negative emissions |
title_fullStr |
Possibility for strong northern hemisphere high-latitude cooling under negative emissions |
title_full_unstemmed |
Possibility for strong northern hemisphere high-latitude cooling under negative emissions |
title_sort |
possibility for strong northern hemisphere high-latitude cooling under negative emissions |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3046968 https://doi.org/10.1038/s41467-022-28573-5 |
genre |
Ice permafrost Sea ice |
genre_facet |
Ice permafrost Sea ice |
op_source |
Nature Communications 13 1 |
op_relation |
Norges forskningsråd: 294930 urn:issn:2041-1723 https://hdl.handle.net/11250/3046968 https://doi.org/10.1038/s41467-022-28573-5 cristin:1993920 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © The Author(s) 2022 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-022-28573-5 |
container_title |
Nature Communications |
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13 |
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1 |
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1766027931882094592 |