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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2023
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00064755 2023-05-15T13:49:22+02:00 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, François Marchi, Sylvain Massonnet, François Mezzina, Bianca Pelletier, Charles Roach, Lettie Vancoppenolle, Martin van Lipzig, Nicole P. M. 2023-01 electronic https://doi.org/10.5194/tc-17-407-2023 https://noa.gwlb.de/receive/cop_mods_00064755 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00063463/tc-17-407-2023.pdf https://tc.copernicus.org/articles/17/407/2023/tc-17-407-2023.pdf eng eng Copernicus Publications The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-407-2023 https://noa.gwlb.de/receive/cop_mods_00064755 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00063463/tc-17-407-2023.pdf https://tc.copernicus.org/articles/17/407/2023/tc-17-407-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/tc-17-407-2023 2023-02-06T00:14:01Z 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 ( 1/4∘) 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 Niedersächsisches Online-Archiv NOA Antarctic Southern Ocean The Antarctic The Cryosphere 17 1 407 425 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Goosse, Hugues Allende Contador, Sofia Bitz, Cecilia M. Blanchard-Wrigglesworth, Edward Eayrs, Clare Fichefet, Thierry Himmich, Kenza Huot, Pierre-Vincent Klein, 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 |
article Verlagsveröffentlichung |
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 ( 1/4∘) 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 ... |
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, 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, 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 Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/tc-17-407-2023 https://noa.gwlb.de/receive/cop_mods_00064755 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00063463/tc-17-407-2023.pdf https://tc.copernicus.org/articles/17/407/2023/tc-17-407-2023.pdf |
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_relation |
The Cryosphere -- ˜Theœ Cryosphere -- http://www.bibliothek.uni-regensburg.de/ezeit/?2393169 -- http://www.the-cryosphere.net/ -- 1994-0424 https://doi.org/10.5194/tc-17-407-2023 https://noa.gwlb.de/receive/cop_mods_00064755 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00063463/tc-17-407-2023.pdf https://tc.copernicus.org/articles/17/407/2023/tc-17-407-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
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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1766251257092112384 |