Biogeochemical Impact of Snow Cover and Cyclonic Intrusions on the Winter Weddell Sea Ice Pack
peer reviewed Sea ice is a dynamic biogeochemical reactor and a double interface actively interacting with both the atmosphere and the ocean. However, proper understanding of its annual impact on exchanges, and therefore potentially on the climate, notably suffer from the paucity of autumnal and win...
Published in: | Journal of Geophysical Research: Oceans |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://orbi.uliege.be/handle/2268/219831 https://orbi.uliege.be/bitstream/2268/219831/1/Tison_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1002/2017JC013288 |
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ftorbi:oai:orbi.ulg.ac.be:2268/219831 2024-04-21T07:51:44+00:00 Biogeochemical Impact of Snow Cover and Cyclonic Intrusions on the Winter Weddell Sea Ice Pack Tison, J.-L. Schwegmann, S. Dieckmann, G. Rintala, J.-M. Meyer, H. Moreau, S. Vancoppenolle, M. Nomura, D. Engberg, S. Blomster, L. J. Hendrickx, S Uhlig, C. Luhtanen, A.-M. de Jong, J. Janssens, J. Carnat, G. Zhou, J. Delille, Bruno FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège 2017 https://orbi.uliege.be/handle/2268/219831 https://orbi.uliege.be/bitstream/2268/219831/1/Tison_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1002/2017JC013288 en eng Wiley http://dx.doi.org/10.1002/2017JC013288 urn:issn:2169-9275 urn:issn:2169-9291 https://orbi.uliege.be/handle/2268/219831 info:hdl:2268/219831 https://orbi.uliege.be/bitstream/2268/219831/1/Tison_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf doi:10.1002/2017JC013288 scopus-id:2-s2.0-85040700450 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Journal of Geophysical Research. Oceans, 122 (12), 9548-9571 (2017) Biogeochemistry Sea ice Weddell Sea Antarctica winter 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 2017 ftorbi https://doi.org/10.1002/2017JC013288 2024-03-27T14:53:27Z peer reviewed Sea ice is a dynamic biogeochemical reactor and a double interface actively interacting with both the atmosphere and the ocean. However, proper understanding of its annual impact on exchanges, and therefore potentially on the climate, notably suffer from the paucity of autumnal and winter data sets. Here we present the results of physical and biogeochemical investigations on winter Antarctic pack ice in the Weddell Sea (R. V. Polarstern AWECS cruise, June–August 2013) which are compared with those from two similar studies conducted in the area in 1986 and 1992. The winter 2013 was characterized by a warm sea ice cover due to the combined effects of deep snow and frequent warm cyclones events penetrating southward from the open Southern Ocean. These conditions were favorable to high ice permeability and cyclic events of brine movements within the sea ice cover (brine tubes), favoring relatively high chlorophyll-a (Chl-a) concentrations. We discuss the timing of this algal activity showing that arguments can be presented in favor of continued activity during the winter due to the specific physical conditions. Large-scale sea ice model simulations also suggest a context of increasingly deep snow, warm ice, and large brine fractions across the three observational years, despite the fact that the model is forced with a snowfall climatology. This lends support to the claim that more severe Antarctic sea ice conditions, characterized by a longer ice season, thicker, and more concentrated ice are sufficient to increase the snow depth and, somehow counterintuitively, to warm the ice. Article in Journal/Newspaper Antarc* Antarctic Antarctica ice pack Sea ice Southern Ocean Weddell Sea University of Liège: ORBi (Open Repository and Bibliography) Journal of Geophysical Research: Oceans 122 12 9548 9571 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Biogeochemistry Sea ice Weddell Sea Antarctica winter Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Biogeochemistry Sea ice Weddell Sea Antarctica winter Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Tison, J.-L. Schwegmann, S. Dieckmann, G. Rintala, J.-M. Meyer, H. Moreau, S. Vancoppenolle, M. Nomura, D. Engberg, S. Blomster, L. J. Hendrickx, S Uhlig, C. Luhtanen, A.-M. de Jong, J. Janssens, J. Carnat, G. Zhou, J. Delille, Bruno Biogeochemical Impact of Snow Cover and Cyclonic Intrusions on the Winter Weddell Sea Ice Pack |
topic_facet |
Biogeochemistry Sea ice Weddell Sea Antarctica winter 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 Sea ice is a dynamic biogeochemical reactor and a double interface actively interacting with both the atmosphere and the ocean. However, proper understanding of its annual impact on exchanges, and therefore potentially on the climate, notably suffer from the paucity of autumnal and winter data sets. Here we present the results of physical and biogeochemical investigations on winter Antarctic pack ice in the Weddell Sea (R. V. Polarstern AWECS cruise, June–August 2013) which are compared with those from two similar studies conducted in the area in 1986 and 1992. The winter 2013 was characterized by a warm sea ice cover due to the combined effects of deep snow and frequent warm cyclones events penetrating southward from the open Southern Ocean. These conditions were favorable to high ice permeability and cyclic events of brine movements within the sea ice cover (brine tubes), favoring relatively high chlorophyll-a (Chl-a) concentrations. We discuss the timing of this algal activity showing that arguments can be presented in favor of continued activity during the winter due to the specific physical conditions. Large-scale sea ice model simulations also suggest a context of increasingly deep snow, warm ice, and large brine fractions across the three observational years, despite the fact that the model is forced with a snowfall climatology. This lends support to the claim that more severe Antarctic sea ice conditions, characterized by a longer ice season, thicker, and more concentrated ice are sufficient to increase the snow depth and, somehow counterintuitively, to warm the ice. |
author2 |
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège |
format |
Article in Journal/Newspaper |
author |
Tison, J.-L. Schwegmann, S. Dieckmann, G. Rintala, J.-M. Meyer, H. Moreau, S. Vancoppenolle, M. Nomura, D. Engberg, S. Blomster, L. J. Hendrickx, S Uhlig, C. Luhtanen, A.-M. de Jong, J. Janssens, J. Carnat, G. Zhou, J. Delille, Bruno |
author_facet |
Tison, J.-L. Schwegmann, S. Dieckmann, G. Rintala, J.-M. Meyer, H. Moreau, S. Vancoppenolle, M. Nomura, D. Engberg, S. Blomster, L. J. Hendrickx, S Uhlig, C. Luhtanen, A.-M. de Jong, J. Janssens, J. Carnat, G. Zhou, J. Delille, Bruno |
author_sort |
Tison, J.-L. |
title |
Biogeochemical Impact of Snow Cover and Cyclonic Intrusions on the Winter Weddell Sea Ice Pack |
title_short |
Biogeochemical Impact of Snow Cover and Cyclonic Intrusions on the Winter Weddell Sea Ice Pack |
title_full |
Biogeochemical Impact of Snow Cover and Cyclonic Intrusions on the Winter Weddell Sea Ice Pack |
title_fullStr |
Biogeochemical Impact of Snow Cover and Cyclonic Intrusions on the Winter Weddell Sea Ice Pack |
title_full_unstemmed |
Biogeochemical Impact of Snow Cover and Cyclonic Intrusions on the Winter Weddell Sea Ice Pack |
title_sort |
biogeochemical impact of snow cover and cyclonic intrusions on the winter weddell sea ice pack |
publisher |
Wiley |
publishDate |
2017 |
url |
https://orbi.uliege.be/handle/2268/219831 https://orbi.uliege.be/bitstream/2268/219831/1/Tison_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1002/2017JC013288 |
genre |
Antarc* Antarctic Antarctica ice pack Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctica ice pack Sea ice Southern Ocean Weddell Sea |
op_source |
Journal of Geophysical Research. Oceans, 122 (12), 9548-9571 (2017) |
op_relation |
http://dx.doi.org/10.1002/2017JC013288 urn:issn:2169-9275 urn:issn:2169-9291 https://orbi.uliege.be/handle/2268/219831 info:hdl:2268/219831 https://orbi.uliege.be/bitstream/2268/219831/1/Tison_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf doi:10.1002/2017JC013288 scopus-id:2-s2.0-85040700450 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017JC013288 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
12 |
container_start_page |
9548 |
op_container_end_page |
9571 |
_version_ |
1796935028907704320 |