Effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off Adélie Land, East Antarctica
peer reviewed Heat and momentum exchanges at the Southern Ocean surface are crucial for the Earth’s Climate, but the importance of the small-scale spatial variability of these surface fluxes is poorly understood. Here, we explore how small-scale heterogeneities of the surface conditions due in parti...
Published in: | Climate Dynamics |
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Language: | English |
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Springer Science and Business Media Deutschland GmbH
2022
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Online Access: | https://orbi.uliege.be/handle/2268/302679 https://orbi.uliege.be/bitstream/2268/302679/1/s00382-021-06115-x.pdf https://doi.org/10.1007/s00382-021-06115-x |
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ftorbi:oai:orbi.ulg.ac.be:2268/302679 2024-10-13T14:01:54+00:00 Effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off Adélie Land, East Antarctica Huot, P.-V. Kittel, Christoph Fichefet, T. Jourdain, N.C. Fettweis, Xavier SPHERES - ULiège 2022-07 https://orbi.uliege.be/handle/2268/302679 https://orbi.uliege.be/bitstream/2268/302679/1/s00382-021-06115-x.pdf https://doi.org/10.1007/s00382-021-06115-x en eng Springer Science and Business Media Deutschland GmbH https://link.springer.com/content/pdf/10.1007/s00382-021-06115-x.pdf urn:issn:0930-7575 urn:issn:1432-0894 https://orbi.uliege.be/handle/2268/302679 info:hdl:2268/302679 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Climate Dynamics, 59 (1-2), 41 - 60 (2022-07) Atmosphere–sea ice–ocean interactions Mesoscale Regional Coupled Model Sea ice Southern Ocean Atmospheric Science Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2022 ftorbi https://doi.org/10.1007/s00382-021-06115-x 2024-09-27T07:01:36Z peer reviewed Heat and momentum exchanges at the Southern Ocean surface are crucial for the Earth’s Climate, but the importance of the small-scale spatial variability of these surface fluxes is poorly understood. Here, we explore how small-scale heterogeneities of the surface conditions due in particular to ocean eddies affect the atmosphere–sea ice–ocean interactions off Adélie Land, in East Antarctica. To this end, we use a high-resolution regional atmosphere–sea ice–ocean coupled model based on the NEMO-LIM and MAR models. We explore how the atmosphere responds to small-scale heterogeneity of the ocean or sea ice surface conditions, how eddies affect the sea ice and atmosphere, and how the eddy-driven surface fluxes impact the heat, freshwater, and momentum budget of the ocean. The atmosphere is found to be more sensitive to small-scale surface temperature gradients above the ice-covered than above the ice-free ocean. Sea ice concentration is found to be weaker above anticyclonic than cyclonic eddies due to increased sea ice melting or freezing (0.8 cm/day) partly compensated by sea ice convergence or divergence. The imprint of ice-free eddies on the atmosphere is weak, but in the presence of sea ice, air warming (+ 0.3 ∘C) and wind intensification (+ 0.1 m/s) are found above anticyclonic eddies, while cyclonic eddies have the opposite effects. Removing the interactions of eddies with the sea ice or atmosphere does not affect the total sea ice volume, but increases the ocean kinetic energy by 8% and weakens northward advection of sea ice, leading to a 15% decrease in freshwater flux north of 62.5 ∘S and weaker ocean restratification. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Sea ice Southern Ocean University of Liège: ORBi (Open Repository and Bibliography) Southern Ocean East Antarctica Climate Dynamics 59 1-2 41 60 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Atmosphere–sea ice–ocean interactions Mesoscale Regional Coupled Model Sea ice Southern Ocean Atmospheric Science Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Atmosphere–sea ice–ocean interactions Mesoscale Regional Coupled Model Sea ice Southern Ocean Atmospheric Science Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Huot, P.-V. Kittel, Christoph Fichefet, T. Jourdain, N.C. Fettweis, Xavier Effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off Adélie Land, East Antarctica |
topic_facet |
Atmosphere–sea ice–ocean interactions Mesoscale Regional Coupled Model Sea ice Southern Ocean Atmospheric Science Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
peer reviewed Heat and momentum exchanges at the Southern Ocean surface are crucial for the Earth’s Climate, but the importance of the small-scale spatial variability of these surface fluxes is poorly understood. Here, we explore how small-scale heterogeneities of the surface conditions due in particular to ocean eddies affect the atmosphere–sea ice–ocean interactions off Adélie Land, in East Antarctica. To this end, we use a high-resolution regional atmosphere–sea ice–ocean coupled model based on the NEMO-LIM and MAR models. We explore how the atmosphere responds to small-scale heterogeneity of the ocean or sea ice surface conditions, how eddies affect the sea ice and atmosphere, and how the eddy-driven surface fluxes impact the heat, freshwater, and momentum budget of the ocean. The atmosphere is found to be more sensitive to small-scale surface temperature gradients above the ice-covered than above the ice-free ocean. Sea ice concentration is found to be weaker above anticyclonic than cyclonic eddies due to increased sea ice melting or freezing (0.8 cm/day) partly compensated by sea ice convergence or divergence. The imprint of ice-free eddies on the atmosphere is weak, but in the presence of sea ice, air warming (+ 0.3 ∘C) and wind intensification (+ 0.1 m/s) are found above anticyclonic eddies, while cyclonic eddies have the opposite effects. Removing the interactions of eddies with the sea ice or atmosphere does not affect the total sea ice volume, but increases the ocean kinetic energy by 8% and weakens northward advection of sea ice, leading to a 15% decrease in freshwater flux north of 62.5 ∘S and weaker ocean restratification. |
author2 |
SPHERES - ULiège |
format |
Article in Journal/Newspaper |
author |
Huot, P.-V. Kittel, Christoph Fichefet, T. Jourdain, N.C. Fettweis, Xavier |
author_facet |
Huot, P.-V. Kittel, Christoph Fichefet, T. Jourdain, N.C. Fettweis, Xavier |
author_sort |
Huot, P.-V. |
title |
Effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off Adélie Land, East Antarctica |
title_short |
Effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off Adélie Land, East Antarctica |
title_full |
Effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off Adélie Land, East Antarctica |
title_fullStr |
Effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off Adélie Land, East Antarctica |
title_full_unstemmed |
Effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off Adélie Land, East Antarctica |
title_sort |
effects of ocean mesoscale eddies on atmosphere–sea ice–ocean interactions off adélie land, east antarctica |
publisher |
Springer Science and Business Media Deutschland GmbH |
publishDate |
2022 |
url |
https://orbi.uliege.be/handle/2268/302679 https://orbi.uliege.be/bitstream/2268/302679/1/s00382-021-06115-x.pdf https://doi.org/10.1007/s00382-021-06115-x |
geographic |
Southern Ocean East Antarctica |
geographic_facet |
Southern Ocean East Antarctica |
genre |
Antarc* Antarctica East Antarctica Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctica East Antarctica Sea ice Southern Ocean |
op_source |
Climate Dynamics, 59 (1-2), 41 - 60 (2022-07) |
op_relation |
https://link.springer.com/content/pdf/10.1007/s00382-021-06115-x.pdf urn:issn:0930-7575 urn:issn:1432-0894 https://orbi.uliege.be/handle/2268/302679 info:hdl:2268/302679 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s00382-021-06115-x |
container_title |
Climate Dynamics |
container_volume |
59 |
container_issue |
1-2 |
container_start_page |
41 |
op_container_end_page |
60 |
_version_ |
1812813554164695040 |