Influence of short-term synoptic events and snow depth on DMS, DMSP, and DMSO dynamics in Antarctic spring sea ice
International audience Temporal changes in the concentration profiles of dimethylsulfide (DMS), dimethylsulfoniopropio-nate (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...
Published in: | Elementa: Science of the Anthropocene |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
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Subjects: | |
Online Access: | https://hal.science/hal-01406227 https://doi.org/10.12952/journal.elementa.000135 |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Carnat, Gauthier Brabant, Frédéric Dumont, Isabelle Vancoppenolle, M. 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 |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Temporal changes in the concentration profiles of dimethylsulfide (DMS), dimethylsulfoniopropio-nate (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 dinoflagel-lates) 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 instabil-ity 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 |
Laboratoire de Glaciologie Bruxelles Université libre de Bruxelles (ULB) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) The University of Texas at San Antonio (UTSA) Division of Earth and Ecosystem Sciences (DEES) Desert Research Institute (DRI) Unité d'Océanographie Chimique Interfacultary Center for Marine Research (MARE) Université de Liège-Université de Liège |
format |
Article in Journal/Newspaper |
author |
Carnat, Gauthier Brabant, Frédéric Dumont, Isabelle Vancoppenolle, M. Ackley, Stephen F. Fritsen, Chris Delille, Bruno Tison, Jean-Louis |
author_facet |
Carnat, Gauthier Brabant, Frédéric Dumont, Isabelle Vancoppenolle, M. 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 |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.science/hal-01406227 https://doi.org/10.12952/journal.elementa.000135 |
geographic |
Antarctic Bellingshausen Sea |
geographic_facet |
Antarctic Bellingshausen Sea |
genre |
Antarc* Antarctic Antarctica Bellingshausen Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Bellingshausen Sea Sea ice |
op_source |
EISSN: 2325-1026 Elementa: Science of the Anthropocene https://hal.science/hal-01406227 Elementa: Science of the Anthropocene, 2016, 4, pp.000135. ⟨10.12952/journal.elementa.000135⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.12952/journal.elementa.000135 hal-01406227 https://hal.science/hal-01406227 doi:10.12952/journal.elementa.000135 WOS: WOS:000389923400001 |
op_doi |
https://doi.org/10.12952/journal.elementa.000135 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
4 |
_version_ |
1766028505898811392 |
spelling |
ftunivnantes:oai:HAL:hal-01406227v1 2023-05-15T13:32:35+02:00 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, M. Ackley, Stephen F. Fritsen, Chris Delille, Bruno Tison, Jean-Louis Laboratoire de Glaciologie Bruxelles Université libre de Bruxelles (ULB) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) The University of Texas at San Antonio (UTSA) Division of Earth and Ecosystem Sciences (DEES) Desert Research Institute (DRI) Unité d'Océanographie Chimique Interfacultary Center for Marine Research (MARE) Université de Liège-Université de Liège 2016 https://hal.science/hal-01406227 https://doi.org/10.12952/journal.elementa.000135 en eng HAL CCSD University of California Press info:eu-repo/semantics/altIdentifier/doi/10.12952/journal.elementa.000135 hal-01406227 https://hal.science/hal-01406227 doi:10.12952/journal.elementa.000135 WOS: WOS:000389923400001 EISSN: 2325-1026 Elementa: Science of the Anthropocene https://hal.science/hal-01406227 Elementa: Science of the Anthropocene, 2016, 4, pp.000135. ⟨10.12952/journal.elementa.000135⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2016 ftunivnantes https://doi.org/10.12952/journal.elementa.000135 2023-01-18T01:12:46Z International audience Temporal changes in the concentration profiles of dimethylsulfide (DMS), dimethylsulfoniopropio-nate (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 dinoflagel-lates) 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 instabil-ity 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 Université de Nantes: HAL-UNIV-NANTES Antarctic Bellingshausen Sea Elementa: Science of the Anthropocene 4 |