Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere
The seasonal cycle of the Antarctic sea ice extent is strongly asymmetric, with a relatively slow increase after the summer minimum followed by a more rapid decrease after the winter maximum. This cycle is intimately linked to the seasonal cycle of the insolation received at the top of the atmospher...
Published in: | The Cryosphere |
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Online Access: | http://hdl.handle.net/2078.1/272222 https://doi.org/10.5194/tc-17-407-2023 |
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:272222 2024-05-12T07:56:36+00:00 Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere Goosse, Hugues Allende Contador, Sofia Bitz, Cecilia M. Blanchard-Wrigglesworth, Edward Eayrs, Clare Fichefet, Thierry Himmich, Kenza Huot, Pierre-Vincent Klein, Jean-François Marchi, Sylvain Massonnet, François Mezzina, Bianca Pelletier, Charles Roach, Lettie Vancoppenolle, Martin van Lipzig, Nicole P. M. UCL - SST/ELI/ELIC - Earth & Climate 2023 http://hdl.handle.net/2078.1/272222 https://doi.org/10.5194/tc-17-407-2023 eng eng Copernicus GmbH boreal:272222 http://hdl.handle.net/2078.1/272222 doi:10.5194/tc-17-407-2023 urn:ISSN:1994-0416 urn:EISSN:1994-0424 info:eu-repo/semantics/openAccess The Cryosphere, Vol. 17, no.1, p. 407-425 (2023) Earth-Surface Processes Water Science and Technology info:eu-repo/semantics/article 2023 ftunistlouisbrus https://doi.org/10.5194/tc-17-407-2023 2024-04-18T17:08:39Z The seasonal cycle of the Antarctic sea ice extent is strongly asymmetric, with a relatively slow increase after the summer minimum followed by a more rapid decrease after the winter maximum. This cycle is intimately linked to the seasonal cycle of the insolation received at the top of the atmosphere, but sea ice processes as well as the exchanges with the atmosphere and ocean may also play a role. To quantify these contributions, a series of idealized sensitivity experiments have been performed with an eddy-permitting (∘) NEMO-LIM3 (Nucleus for European Modelling of the Ocean–Louvain-la-Neuve sea ice model version 3) Southern Ocean configuration, including a representation of ice shelf cavities, in which the model was either driven by an atmospheric reanalysis or coupled to the COSMO-CLM2 regional atmospheric model. In those experiments, sea ice thermodynamics and dynamics as well as the exchanges with the ocean and atmosphere are strongly perturbed. This perturbation is achieved by modifying snow and ice thermal conductivities, the vertical mixing in the ocean top layers, the effect of freshwater uptake and release upon sea ice growth and melt, ice dynamics, and surface albedo. We find that the evolution of sea ice extent during the ice advance season is largely independent of the direct effect of the perturbation and appears thus mainly controlled by initial state in summer and subsequent insolation changes. In contrast, the melting rate varies strongly between the experiments during the retreat, in particular if the surface albedo or sea ice transport are modified, demonstrating a strong contribution of those elements to the evolution of ice coverage through spring and summer. As with the advance phase, the retreat is also influenced by conditions at the beginning of the melt season in September. Atmospheric feedbacks enhance the model winter ice extent response to any of the perturbed processes, and the enhancement is strongest when the albedo is modified. The response of sea ice volume and extent to ... Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Sea ice Southern Ocean The Cryosphere DIAL@USL-B (Université Saint-Louis, Bruxelles) Antarctic Southern Ocean The Antarctic The Cryosphere 17 1 407 425 |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
Earth-Surface Processes Water Science and Technology |
spellingShingle |
Earth-Surface Processes Water Science and Technology Goosse, Hugues Allende Contador, Sofia Bitz, Cecilia M. Blanchard-Wrigglesworth, Edward Eayrs, Clare Fichefet, Thierry Himmich, Kenza Huot, Pierre-Vincent Klein, Jean-François Marchi, Sylvain Massonnet, François Mezzina, Bianca Pelletier, Charles Roach, Lettie Vancoppenolle, Martin van Lipzig, Nicole P. M. Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere |
topic_facet |
Earth-Surface Processes Water Science and Technology |
description |
The seasonal cycle of the Antarctic sea ice extent is strongly asymmetric, with a relatively slow increase after the summer minimum followed by a more rapid decrease after the winter maximum. This cycle is intimately linked to the seasonal cycle of the insolation received at the top of the atmosphere, but sea ice processes as well as the exchanges with the atmosphere and ocean may also play a role. To quantify these contributions, a series of idealized sensitivity experiments have been performed with an eddy-permitting (∘) NEMO-LIM3 (Nucleus for European Modelling of the Ocean–Louvain-la-Neuve sea ice model version 3) Southern Ocean configuration, including a representation of ice shelf cavities, in which the model was either driven by an atmospheric reanalysis or coupled to the COSMO-CLM2 regional atmospheric model. In those experiments, sea ice thermodynamics and dynamics as well as the exchanges with the ocean and atmosphere are strongly perturbed. This perturbation is achieved by modifying snow and ice thermal conductivities, the vertical mixing in the ocean top layers, the effect of freshwater uptake and release upon sea ice growth and melt, ice dynamics, and surface albedo. We find that the evolution of sea ice extent during the ice advance season is largely independent of the direct effect of the perturbation and appears thus mainly controlled by initial state in summer and subsequent insolation changes. In contrast, the melting rate varies strongly between the experiments during the retreat, in particular if the surface albedo or sea ice transport are modified, demonstrating a strong contribution of those elements to the evolution of ice coverage through spring and summer. As with the advance phase, the retreat is also influenced by conditions at the beginning of the melt season in September. Atmospheric feedbacks enhance the model winter ice extent response to any of the perturbed processes, and the enhancement is strongest when the albedo is modified. The response of sea ice volume and extent to ... |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate |
format |
Article in Journal/Newspaper |
author |
Goosse, Hugues Allende Contador, Sofia Bitz, Cecilia M. Blanchard-Wrigglesworth, Edward Eayrs, Clare Fichefet, Thierry Himmich, Kenza Huot, Pierre-Vincent Klein, Jean-François Marchi, Sylvain Massonnet, François Mezzina, Bianca Pelletier, Charles Roach, Lettie Vancoppenolle, Martin van Lipzig, Nicole P. M. |
author_facet |
Goosse, Hugues Allende Contador, Sofia Bitz, Cecilia M. Blanchard-Wrigglesworth, Edward Eayrs, Clare Fichefet, Thierry Himmich, Kenza Huot, Pierre-Vincent Klein, Jean-François Marchi, Sylvain Massonnet, François Mezzina, Bianca Pelletier, Charles Roach, Lettie Vancoppenolle, Martin van Lipzig, Nicole P. M. |
author_sort |
Goosse, Hugues |
title |
Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere |
title_short |
Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere |
title_full |
Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere |
title_fullStr |
Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere |
title_full_unstemmed |
Modulation of the seasonal cycle of the Antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere |
title_sort |
modulation of the seasonal cycle of the antarctic sea ice extent by sea ice processes and feedbacks with the ocean and the atmosphere |
publisher |
Copernicus GmbH |
publishDate |
2023 |
url |
http://hdl.handle.net/2078.1/272222 https://doi.org/10.5194/tc-17-407-2023 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Ice Shelf Sea ice Southern Ocean The Cryosphere |
genre_facet |
Antarc* Antarctic Ice Shelf Sea ice Southern Ocean The Cryosphere |
op_source |
The Cryosphere, Vol. 17, no.1, p. 407-425 (2023) |
op_relation |
boreal:272222 http://hdl.handle.net/2078.1/272222 doi:10.5194/tc-17-407-2023 urn:ISSN:1994-0416 urn:EISSN:1994-0424 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/tc-17-407-2023 |
container_title |
The Cryosphere |
container_volume |
17 |
container_issue |
1 |
container_start_page |
407 |
op_container_end_page |
425 |
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1798836758422487040 |