Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming
To counteract global warming, a geoengineering approach that aims at intervening in the Arctic ice-albedo feedback has been proposed. A large number of wind-driven pumps shall spread seawater on the surface in winter to enhance ice growth, allowing more ice to survive the summer melt. We test this i...
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Online Access: | https://doi.org/10.1029/2019EF001230 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9350 |
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ftsubggeo:oai:e-docs.geo-leo.de:11858/9350 2023-05-15T13:10:40+02:00 Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming Zampieri, Lorenzo Goessling, Helge F. 2019 https://doi.org/10.1029/2019EF001230 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9350 eng eng doi:10.1029/2019EF001230 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9350 This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY ddc:551.68 sea ice geoengineering Arctic sea ice decline global warming ice-albedo feedback sea ice modeling doc-type:article 2019 ftsubggeo https://doi.org/10.1029/2019EF001230 2022-11-09T06:51:40Z To counteract global warming, a geoengineering approach that aims at intervening in the Arctic ice-albedo feedback has been proposed. A large number of wind-driven pumps shall spread seawater on the surface in winter to enhance ice growth, allowing more ice to survive the summer melt. We test this idea with a coupled climate model by modifying the surface exchange processes such that the physical effect of the pumps is simulated. Based on experiments with RCP 8.5 scenario forcing, we find that it is possible to keep the late-summer sea ice cover at the current extent for the next ∼60 years. The increased ice extent is accompanied by significant Arctic late-summer cooling by ∼1.3 K on average north of the polar circle (2021–2060). However, this cooling is not conveyed to lower latitudes. Moreover, the Arctic experiences substantial winter warming in regions with active pumps. The global annual-mean near-surface air temperature is reduced by only 0.02 K (2021–2060). Our results cast doubt on the potential of sea ice targeted geoengineering to mitigate climate change. Article in Journal/Newspaper albedo Arctic Climate change Global warming Sea ice GEO-LEOe-docs (FID GEO) Arctic Earth's Future 7 12 1296 1306 |
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Open Polar |
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GEO-LEOe-docs (FID GEO) |
op_collection_id |
ftsubggeo |
language |
English |
topic |
ddc:551.68 sea ice geoengineering Arctic sea ice decline global warming ice-albedo feedback sea ice modeling |
spellingShingle |
ddc:551.68 sea ice geoengineering Arctic sea ice decline global warming ice-albedo feedback sea ice modeling Zampieri, Lorenzo Goessling, Helge F. Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming |
topic_facet |
ddc:551.68 sea ice geoengineering Arctic sea ice decline global warming ice-albedo feedback sea ice modeling |
description |
To counteract global warming, a geoengineering approach that aims at intervening in the Arctic ice-albedo feedback has been proposed. A large number of wind-driven pumps shall spread seawater on the surface in winter to enhance ice growth, allowing more ice to survive the summer melt. We test this idea with a coupled climate model by modifying the surface exchange processes such that the physical effect of the pumps is simulated. Based on experiments with RCP 8.5 scenario forcing, we find that it is possible to keep the late-summer sea ice cover at the current extent for the next ∼60 years. The increased ice extent is accompanied by significant Arctic late-summer cooling by ∼1.3 K on average north of the polar circle (2021–2060). However, this cooling is not conveyed to lower latitudes. Moreover, the Arctic experiences substantial winter warming in regions with active pumps. The global annual-mean near-surface air temperature is reduced by only 0.02 K (2021–2060). Our results cast doubt on the potential of sea ice targeted geoengineering to mitigate climate change. |
format |
Article in Journal/Newspaper |
author |
Zampieri, Lorenzo Goessling, Helge F. |
author_facet |
Zampieri, Lorenzo Goessling, Helge F. |
author_sort |
Zampieri, Lorenzo |
title |
Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming |
title_short |
Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming |
title_full |
Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming |
title_fullStr |
Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming |
title_full_unstemmed |
Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming |
title_sort |
sea ice targeted geoengineering can delay arctic sea ice decline but not global warming |
publishDate |
2019 |
url |
https://doi.org/10.1029/2019EF001230 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9350 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Climate change Global warming Sea ice |
genre_facet |
albedo Arctic Climate change Global warming Sea ice |
op_relation |
doi:10.1029/2019EF001230 http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/9350 |
op_rights |
This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1029/2019EF001230 |
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Earth's Future |
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