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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American Geophysical Union
2019
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Online Access: | https://epic.awi.de/id/eprint/53666/ https://epic.awi.de/id/eprint/53666/1/2019EF001230%281%29.pdf https://doi.org/10.1029/2019EF001230 https://hdl.handle.net/10013/epic.906b0d29-aea4-4089-8c8a-62e5ec0da0d1 https://hdl.handle.net/ |
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ftawi:oai:epic.awi.de:53666 2023-05-15T13:11:00+02:00 Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming Zampieri, Lorenzo Goessling, Helge F. 2019 application/pdf https://epic.awi.de/id/eprint/53666/ https://epic.awi.de/id/eprint/53666/1/2019EF001230%281%29.pdf https://doi.org/10.1029/2019EF001230 https://hdl.handle.net/10013/epic.906b0d29-aea4-4089-8c8a-62e5ec0da0d1 https://hdl.handle.net/ unknown American Geophysical Union https://epic.awi.de/id/eprint/53666/1/2019EF001230%281%29.pdf https://hdl.handle.net/ Zampieri, L. orcid:0000-0003-1703-4162 and Goessling, H. F. orcid:0000-0001-9018-1383 (2019) Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming , Earth's Future, 7 (12), pp. 1296-1306 . doi:10.1029/2019EF001230 <https://doi.org/10.1029/2019EF001230> , hdl:10013/epic.906b0d29-aea4-4089-8c8a-62e5ec0da0d1 EPIC3Earth's Future, American Geophysical Union, 7(12), pp. 1296-1306, ISSN: 2328-4277 Article isiRev 2019 ftawi https://doi.org/10.1029/2019EF001230 2021-12-24T15:46:10Z 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 Arctic Climate change Global warming Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Earth's Future 7 12 1296 1306 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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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. |
spellingShingle |
Zampieri, Lorenzo Goessling, Helge F. Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming |
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 |
publisher |
American Geophysical Union |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/53666/ https://epic.awi.de/id/eprint/53666/1/2019EF001230%281%29.pdf https://doi.org/10.1029/2019EF001230 https://hdl.handle.net/10013/epic.906b0d29-aea4-4089-8c8a-62e5ec0da0d1 https://hdl.handle.net/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Arctic Climate change Global warming Sea ice |
genre_facet |
albedo Arctic Arctic Climate change Global warming Sea ice |
op_source |
EPIC3Earth's Future, American Geophysical Union, 7(12), pp. 1296-1306, ISSN: 2328-4277 |
op_relation |
https://epic.awi.de/id/eprint/53666/1/2019EF001230%281%29.pdf https://hdl.handle.net/ Zampieri, L. orcid:0000-0003-1703-4162 and Goessling, H. F. orcid:0000-0001-9018-1383 (2019) Sea Ice Targeted Geoengineering Can Delay Arctic Sea Ice Decline but not Global Warming , Earth's Future, 7 (12), pp. 1296-1306 . doi:10.1029/2019EF001230 <https://doi.org/10.1029/2019EF001230> , hdl:10013/epic.906b0d29-aea4-4089-8c8a-62e5ec0da0d1 |
op_doi |
https://doi.org/10.1029/2019EF001230 |
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Earth's Future |
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7 |
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12 |
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1296 |
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