Impact of three intense winter cyclones on the sea ice cover in the Barents Sea: A case study with a coupled regional climate model
We utilize a nudged simulation with the coupled regional atmosphere-ocean-sea ice model HIRHAM–NAOSIM over the Arctic to conduct an in-depth analysis of the impact of a sequence of three intense cyclones on the sea ice cover in the Barents and Kara Seas in February 2020. To clarify the underlying me...
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Online Access: | http://dx.doi.org/10.3389/feart.2023.1112467 https://www.frontiersin.org/articles/10.3389/feart.2023.1112467/full |
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crfrontiers:10.3389/feart.2023.1112467 2024-04-28T08:11:14+00:00 Impact of three intense winter cyclones on the sea ice cover in the Barents Sea: A case study with a coupled regional climate model Aue, Lars Röntgen, Leonie Dorn, Wolfgang Uotila, Petteri Vihma, Timo Spreen, Gunnar Rinke, Annette Deutsche Forschungsgemeinschaft Horizon 2020 2023 http://dx.doi.org/10.3389/feart.2023.1112467 https://www.frontiersin.org/articles/10.3389/feart.2023.1112467/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Earth Science volume 11 ISSN 2296-6463 General Earth and Planetary Sciences journal-article 2023 crfrontiers https://doi.org/10.3389/feart.2023.1112467 2024-04-02T07:41:45Z We utilize a nudged simulation with the coupled regional atmosphere-ocean-sea ice model HIRHAM–NAOSIM over the Arctic to conduct an in-depth analysis of the impact of a sequence of three intense cyclones on the sea ice cover in the Barents and Kara Seas in February 2020. To clarify the underlying mechanisms we decompose changes in sea ice concentration (SIC) and thickness (SIT) into their dynamic and thermodynamic contributions and analyze them in concert with simulated changes in the wind forcing and the surface energy budget. Our findings reveal that changes in SIT during and after the cyclone passages are mostly driven by dynamic processes such as increased ice drift and deformation. With respect to SIC, the relative importance of dynamics and thermodynamics depends on the considered time scale and on the general conditions of the cyclone passages. If cyclones follow on each other in rapid succession, dynamic mechanisms dominate the SIC response for time scales of more than 2 weeks and thermodynamic effects via advection of warm-moist/cold-dry air masses on the cyclone’s front/back side only play a secondary role. However, if sufficiently long time elapses until the arrival of the next storm, thermodynamic SIC increase due to refreezing under the influence of cold and dry air at the backside of the cyclone becomes the dominating mechanism during the days following the cyclone passage. Article in Journal/Newspaper Arctic Barents Sea Sea ice Frontiers (Publisher) Frontiers in Earth Science 11 |
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General Earth and Planetary Sciences |
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General Earth and Planetary Sciences Aue, Lars Röntgen, Leonie Dorn, Wolfgang Uotila, Petteri Vihma, Timo Spreen, Gunnar Rinke, Annette Impact of three intense winter cyclones on the sea ice cover in the Barents Sea: A case study with a coupled regional climate model |
topic_facet |
General Earth and Planetary Sciences |
description |
We utilize a nudged simulation with the coupled regional atmosphere-ocean-sea ice model HIRHAM–NAOSIM over the Arctic to conduct an in-depth analysis of the impact of a sequence of three intense cyclones on the sea ice cover in the Barents and Kara Seas in February 2020. To clarify the underlying mechanisms we decompose changes in sea ice concentration (SIC) and thickness (SIT) into their dynamic and thermodynamic contributions and analyze them in concert with simulated changes in the wind forcing and the surface energy budget. Our findings reveal that changes in SIT during and after the cyclone passages are mostly driven by dynamic processes such as increased ice drift and deformation. With respect to SIC, the relative importance of dynamics and thermodynamics depends on the considered time scale and on the general conditions of the cyclone passages. If cyclones follow on each other in rapid succession, dynamic mechanisms dominate the SIC response for time scales of more than 2 weeks and thermodynamic effects via advection of warm-moist/cold-dry air masses on the cyclone’s front/back side only play a secondary role. However, if sufficiently long time elapses until the arrival of the next storm, thermodynamic SIC increase due to refreezing under the influence of cold and dry air at the backside of the cyclone becomes the dominating mechanism during the days following the cyclone passage. |
author2 |
Deutsche Forschungsgemeinschaft Horizon 2020 |
format |
Article in Journal/Newspaper |
author |
Aue, Lars Röntgen, Leonie Dorn, Wolfgang Uotila, Petteri Vihma, Timo Spreen, Gunnar Rinke, Annette |
author_facet |
Aue, Lars Röntgen, Leonie Dorn, Wolfgang Uotila, Petteri Vihma, Timo Spreen, Gunnar Rinke, Annette |
author_sort |
Aue, Lars |
title |
Impact of three intense winter cyclones on the sea ice cover in the Barents Sea: A case study with a coupled regional climate model |
title_short |
Impact of three intense winter cyclones on the sea ice cover in the Barents Sea: A case study with a coupled regional climate model |
title_full |
Impact of three intense winter cyclones on the sea ice cover in the Barents Sea: A case study with a coupled regional climate model |
title_fullStr |
Impact of three intense winter cyclones on the sea ice cover in the Barents Sea: A case study with a coupled regional climate model |
title_full_unstemmed |
Impact of three intense winter cyclones on the sea ice cover in the Barents Sea: A case study with a coupled regional climate model |
title_sort |
impact of three intense winter cyclones on the sea ice cover in the barents sea: a case study with a coupled regional climate model |
publisher |
Frontiers Media SA |
publishDate |
2023 |
url |
http://dx.doi.org/10.3389/feart.2023.1112467 https://www.frontiersin.org/articles/10.3389/feart.2023.1112467/full |
genre |
Arctic Barents Sea Sea ice |
genre_facet |
Arctic Barents Sea Sea ice |
op_source |
Frontiers in Earth Science volume 11 ISSN 2296-6463 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/feart.2023.1112467 |
container_title |
Frontiers in Earth Science |
container_volume |
11 |
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1797578743583080448 |