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 https://doaj.org/article/173a95a459d24baea80bf15719fcc393 |
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ftdoajarticles:oai:doaj.org/article:173a95a459d24baea80bf15719fcc393 2023-05-15T13:10:42+02:00 Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming Lorenzo Zampieri Helge F. Goessling 2019-12-01T00:00:00Z https://doi.org/10.1029/2019EF001230 https://doaj.org/article/173a95a459d24baea80bf15719fcc393 EN eng Wiley https://doi.org/10.1029/2019EF001230 https://doaj.org/toc/2328-4277 2328-4277 doi:10.1029/2019EF001230 https://doaj.org/article/173a95a459d24baea80bf15719fcc393 Earth's Future, Vol 7, Iss 12, Pp 1296-1306 (2019) sea ice geoengineering Arctic sea ice decline global warming ice‐albedo feedback sea ice modeling Environmental sciences GE1-350 Ecology QH540-549.5 article 2019 ftdoajarticles https://doi.org/10.1029/2019EF001230 2022-12-30T23:45:31Z 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 Directory of Open Access Journals: DOAJ Articles Arctic Earth's Future 7 12 1296 1306 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea ice geoengineering Arctic sea ice decline global warming ice‐albedo feedback sea ice modeling Environmental sciences GE1-350 Ecology QH540-549.5 |
spellingShingle |
sea ice geoengineering Arctic sea ice decline global warming ice‐albedo feedback sea ice modeling Environmental sciences GE1-350 Ecology QH540-549.5 Lorenzo Zampieri Helge F. Goessling Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming |
topic_facet |
sea ice geoengineering Arctic sea ice decline global warming ice‐albedo feedback sea ice modeling Environmental sciences GE1-350 Ecology QH540-549.5 |
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 |
Lorenzo Zampieri Helge F. Goessling |
author_facet |
Lorenzo Zampieri Helge F. Goessling |
author_sort |
Lorenzo Zampieri |
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 |
publisher |
Wiley |
publishDate |
2019 |
url |
https://doi.org/10.1029/2019EF001230 https://doaj.org/article/173a95a459d24baea80bf15719fcc393 |
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_source |
Earth's Future, Vol 7, Iss 12, Pp 1296-1306 (2019) |
op_relation |
https://doi.org/10.1029/2019EF001230 https://doaj.org/toc/2328-4277 2328-4277 doi:10.1029/2019EF001230 https://doaj.org/article/173a95a459d24baea80bf15719fcc393 |
op_doi |
https://doi.org/10.1029/2019EF001230 |
container_title |
Earth's Future |
container_volume |
7 |
container_issue |
12 |
container_start_page |
1296 |
op_container_end_page |
1306 |
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1766239773015408640 |