The Roles of the Atmosphere and Ocean in Driving Arctic Warming Due to European Aerosol Reductions
Clean air policies can have significant impacts on climate in remote regions. Previous modeling studies have shown that the temperature response to European sulfate aerosol reductions is largest in the Arctic. Here we investigate the atmospheric and ocean roles in driving this enhanced Arctic warmin...
Published in: | Geophysical Research Letters |
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Stockholms universitet, Meteorologiska institutionen (MISU)
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-185658 https://doi.org/10.1029/2019GL086681 |
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ftstockholmuniv:oai:DiVA.org:su-185658 2023-05-15T14:33:56+02:00 The Roles of the Atmosphere and Ocean in Driving Arctic Warming Due to European Aerosol Reductions Krishnan, Srinath Ekman, Annica M. L. Hansson, Hans-Christen Riipinen, Ilona Lewinschal, Anna Wilcox, Laura J. Dallafior, Tanja 2020 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-185658 https://doi.org/10.1029/2019GL086681 eng eng Stockholms universitet, Meteorologiska institutionen (MISU) Stockholms universitet, Institutionen för miljövetenskap och analytisk kemi Geophysical Research Letters, 0094-8276, 2020, 47:7, orcid:0000-0002-5940-2114 orcid:0000-0001-5691-1493 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-185658 doi:10.1029/2019GL086681 ISI:000560367600040 info:eu-repo/semantics/openAccess Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Article in journal info:eu-repo/semantics/article text 2020 ftstockholmuniv https://doi.org/10.1029/2019GL086681 2023-02-23T21:43:46Z Clean air policies can have significant impacts on climate in remote regions. Previous modeling studies have shown that the temperature response to European sulfate aerosol reductions is largest in the Arctic. Here we investigate the atmospheric and ocean roles in driving this enhanced Arctic warming using a set of fully coupled and slab‐ocean simulations (specified ocean heat convergence fluxes) with the Norwegian Earth system model (NorESM), under scenarios with high and low European aerosol emissions relative to year 2000. We show that atmospheric processes drive most of the Arctic response. The ocean pathway plays a secondary role inducing small temperature changes mostly in the opposite direction of the atmospheric response. Important modulators of the temperature response patterns are changes in sea ice extent and subsequent turbulent heat flux exchange, suggesting that a proper representation of Arctic sea ice and turbulent changes is key to predicting the Arctic response to midlatitude aerosol forcing. Article in Journal/Newspaper Arctic Sea ice Stockholm University: Publications (DiVA) Arctic Geophysical Research Letters 47 7 |
institution |
Open Polar |
collection |
Stockholm University: Publications (DiVA) |
op_collection_id |
ftstockholmuniv |
language |
English |
topic |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap |
spellingShingle |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap Krishnan, Srinath Ekman, Annica M. L. Hansson, Hans-Christen Riipinen, Ilona Lewinschal, Anna Wilcox, Laura J. Dallafior, Tanja The Roles of the Atmosphere and Ocean in Driving Arctic Warming Due to European Aerosol Reductions |
topic_facet |
Earth and Related Environmental Sciences Geovetenskap och miljövetenskap |
description |
Clean air policies can have significant impacts on climate in remote regions. Previous modeling studies have shown that the temperature response to European sulfate aerosol reductions is largest in the Arctic. Here we investigate the atmospheric and ocean roles in driving this enhanced Arctic warming using a set of fully coupled and slab‐ocean simulations (specified ocean heat convergence fluxes) with the Norwegian Earth system model (NorESM), under scenarios with high and low European aerosol emissions relative to year 2000. We show that atmospheric processes drive most of the Arctic response. The ocean pathway plays a secondary role inducing small temperature changes mostly in the opposite direction of the atmospheric response. Important modulators of the temperature response patterns are changes in sea ice extent and subsequent turbulent heat flux exchange, suggesting that a proper representation of Arctic sea ice and turbulent changes is key to predicting the Arctic response to midlatitude aerosol forcing. |
format |
Article in Journal/Newspaper |
author |
Krishnan, Srinath Ekman, Annica M. L. Hansson, Hans-Christen Riipinen, Ilona Lewinschal, Anna Wilcox, Laura J. Dallafior, Tanja |
author_facet |
Krishnan, Srinath Ekman, Annica M. L. Hansson, Hans-Christen Riipinen, Ilona Lewinschal, Anna Wilcox, Laura J. Dallafior, Tanja |
author_sort |
Krishnan, Srinath |
title |
The Roles of the Atmosphere and Ocean in Driving Arctic Warming Due to European Aerosol Reductions |
title_short |
The Roles of the Atmosphere and Ocean in Driving Arctic Warming Due to European Aerosol Reductions |
title_full |
The Roles of the Atmosphere and Ocean in Driving Arctic Warming Due to European Aerosol Reductions |
title_fullStr |
The Roles of the Atmosphere and Ocean in Driving Arctic Warming Due to European Aerosol Reductions |
title_full_unstemmed |
The Roles of the Atmosphere and Ocean in Driving Arctic Warming Due to European Aerosol Reductions |
title_sort |
roles of the atmosphere and ocean in driving arctic warming due to european aerosol reductions |
publisher |
Stockholms universitet, Meteorologiska institutionen (MISU) |
publishDate |
2020 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-185658 https://doi.org/10.1029/2019GL086681 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Sea ice |
genre_facet |
Arctic Sea ice |
op_relation |
Geophysical Research Letters, 0094-8276, 2020, 47:7, orcid:0000-0002-5940-2114 orcid:0000-0001-5691-1493 http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-185658 doi:10.1029/2019GL086681 ISI:000560367600040 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2019GL086681 |
container_title |
Geophysical Research Letters |
container_volume |
47 |
container_issue |
7 |
_version_ |
1766307097007357952 |