Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice
peer reviewed Temporal changes in the concentration profiles of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), and dimethylsulfoxide (DMSO) were measured in pack ice from the Bellingshausen Sea (Antarctica) during the winter-spring transition of 2007. Two sites with contrasting snow and i...
Published in: | Elementa: Science of the Anthropocene |
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Format: | Article in Journal/Newspaper |
Language: | English |
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University of California Press
2016
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Online Access: | https://orbi.uliege.be/handle/2268/206901 https://orbi.uliege.be/bitstream/2268/206901/1/Carnat%20et%20al.%202016.pdf https://doi.org/10.12952/journal.elementa.000135 |
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ftorbi:oai:orbi.ulg.ac.be:2268/206901 2024-04-21T07:47:22+00:00 Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice Carnat, Gauthier Brabant, Frédéric Dumont, Isabelle Vancoppenolle, Martin Ackley, Stephen F. Fritsen, Chris Delille, Bruno Tison, Jean-Louis FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège 2016-10-14 https://orbi.uliege.be/handle/2268/206901 https://orbi.uliege.be/bitstream/2268/206901/1/Carnat%20et%20al.%202016.pdf https://doi.org/10.12952/journal.elementa.000135 en eng University of California Press http://elementascience.org/article/info:doi/10.12952/journal.elementa.000135 urn:issn:2325-1026 https://orbi.uliege.be/handle/2268/206901 info:hdl:2268/206901 https://orbi.uliege.be/bitstream/2268/206901/1/Carnat%20et%20al.%202016.pdf doi:10.12952/journal.elementa.000135 scopus-id:2-s2.0-85015857913 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Elementa: Science of the Anthropocene, 4 (0), 000135 (2016-10-14) 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 2016 ftorbi https://doi.org/10.12952/journal.elementa.000135 2024-03-27T14:59:50Z peer reviewed Temporal changes in the concentration profiles of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), and dimethylsulfoxide (DMSO) were measured in pack ice from the Bellingshausen Sea (Antarctica) during the winter-spring transition of 2007. Two sites with contrasting snow and ice thicknesses were sampled, with high concentrations of DMS, DMSP, and DMSO observed at both sites, especially in surface ice. These high concentrations were shown to correspond to the development of a surface ice microalgal community dominated by strong DMSP producers (flagellates and dinoflagellates) following flooding of the ice cover. Several short-term synoptic events were observed and shown to influence strongly the dynamics of sea ice DMS, DMSP, and DMSO. In particular, a cold spell event was associated with drastic changes in the environmental conditions for the sea ice microbial communities and to a remarkable increase in the production of dimethylated sulfur compounds at both sites. A good correlation between all dimethylated sulfur compounds, sea ice temperature, and brine salinity suggested that the observed increase was triggered mainly by increased thermal and osmotic stresses on microalgal cells. Atmospheric forcing, by controlling sea ice temperature and hence the connectivity and instability of the brine network, was also shown to constrain the transfer of dimethylated sulfur compounds in the ice towards the ocean via brine drainage. Analysis of the two contrasting sampling sites shed light on the key role played by the snow cover in the sea ice DMS cycle. Thicker snow cover, by insulating the underlying sea ice, reduced the amplitude of environmental changes associated with the cold spell, leading to a weaker physiological response and DMS, DMSP, and DMSO production. Thicker snow also hampered the development of steep gradients in sea ice temperature and brine salinity, thereby decreasing the potential for the release of dimethylated sulfur compounds to the ocean via brine drainage. Article in Journal/Newspaper Antarc* Antarctic Antarctica Bellingshausen Sea Sea ice University of Liège: ORBi (Open Repository and Bibliography) Elementa: Science of the Anthropocene 4 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Carnat, Gauthier Brabant, Frédéric Dumont, Isabelle Vancoppenolle, Martin Ackley, Stephen F. Fritsen, Chris Delille, Bruno Tison, Jean-Louis Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice |
topic_facet |
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 Temporal changes in the concentration profiles of dimethylsulfide (DMS), dimethylsulfoniopropionate (DMSP), and dimethylsulfoxide (DMSO) were measured in pack ice from the Bellingshausen Sea (Antarctica) during the winter-spring transition of 2007. Two sites with contrasting snow and ice thicknesses were sampled, with high concentrations of DMS, DMSP, and DMSO observed at both sites, especially in surface ice. These high concentrations were shown to correspond to the development of a surface ice microalgal community dominated by strong DMSP producers (flagellates and dinoflagellates) following flooding of the ice cover. Several short-term synoptic events were observed and shown to influence strongly the dynamics of sea ice DMS, DMSP, and DMSO. In particular, a cold spell event was associated with drastic changes in the environmental conditions for the sea ice microbial communities and to a remarkable increase in the production of dimethylated sulfur compounds at both sites. A good correlation between all dimethylated sulfur compounds, sea ice temperature, and brine salinity suggested that the observed increase was triggered mainly by increased thermal and osmotic stresses on microalgal cells. Atmospheric forcing, by controlling sea ice temperature and hence the connectivity and instability of the brine network, was also shown to constrain the transfer of dimethylated sulfur compounds in the ice towards the ocean via brine drainage. Analysis of the two contrasting sampling sites shed light on the key role played by the snow cover in the sea ice DMS cycle. Thicker snow cover, by insulating the underlying sea ice, reduced the amplitude of environmental changes associated with the cold spell, leading to a weaker physiological response and DMS, DMSP, and DMSO production. Thicker snow also hampered the development of steep gradients in sea ice temperature and brine salinity, thereby decreasing the potential for the release of dimethylated sulfur compounds to the ocean via brine drainage. |
author2 |
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège |
format |
Article in Journal/Newspaper |
author |
Carnat, Gauthier Brabant, Frédéric Dumont, Isabelle Vancoppenolle, Martin Ackley, Stephen F. Fritsen, Chris Delille, Bruno Tison, Jean-Louis |
author_facet |
Carnat, Gauthier Brabant, Frédéric Dumont, Isabelle Vancoppenolle, Martin Ackley, Stephen F. Fritsen, Chris Delille, Bruno Tison, Jean-Louis |
author_sort |
Carnat, Gauthier |
title |
Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice |
title_short |
Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice |
title_full |
Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice |
title_fullStr |
Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice |
title_full_unstemmed |
Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice |
title_sort |
influence of short-term synoptic events and snow depth on dms, dmsp, and dmso dynamics in antarctic spring sea ice |
publisher |
University of California Press |
publishDate |
2016 |
url |
https://orbi.uliege.be/handle/2268/206901 https://orbi.uliege.be/bitstream/2268/206901/1/Carnat%20et%20al.%202016.pdf https://doi.org/10.12952/journal.elementa.000135 |
genre |
Antarc* Antarctic Antarctica Bellingshausen Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Bellingshausen Sea Sea ice |
op_source |
Elementa: Science of the Anthropocene, 4 (0), 000135 (2016-10-14) |
op_relation |
http://elementascience.org/article/info:doi/10.12952/journal.elementa.000135 urn:issn:2325-1026 https://orbi.uliege.be/handle/2268/206901 info:hdl:2268/206901 https://orbi.uliege.be/bitstream/2268/206901/1/Carnat%20et%20al.%202016.pdf doi:10.12952/journal.elementa.000135 scopus-id:2-s2.0-85015857913 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.12952/journal.elementa.000135 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
4 |
_version_ |
1796946236534685696 |