Spatial and temporal variability of the physical, carbonate and CO 2 properties in the Southern Ocean surface waters during austral summer (2005-2019)
International audience In situ measurements of sea surface temperature (SST), salinity (SSS), Total Alkalinity (A T ) and Total Carbon (C T ) were obtained during austral summer (mid-February to mid-March) from 2005 to 2019 in the Southern Ocean (SO), along a transect between Hobart, Tasmania and Du...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2022
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Subjects: | |
Online Access: | https://insu.hal.science/insu-03778091 https://insu.hal.science/insu-03778091/document https://insu.hal.science/insu-03778091/file/1-s2.0-S0967063722001480-main.pdf https://doi.org/10.1016/j.dsr.2022.103836 |
id |
ftccsdartic:oai:HAL:insu-03778091v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Southern ocean Sea surface temperature and salinity Carbonate system Air-sea CO 2 flux Spatial variability Temporal variability [SDU]Sciences of the Universe [physics] |
spellingShingle |
Southern ocean Sea surface temperature and salinity Carbonate system Air-sea CO 2 flux Spatial variability Temporal variability [SDU]Sciences of the Universe [physics] Brandon, Margaux Goyet, Catherine Touratier, Franck Lefèvre, Nathalie Kestenare, Élodie Morrow, Rosemary Spatial and temporal variability of the physical, carbonate and CO 2 properties in the Southern Ocean surface waters during austral summer (2005-2019) |
topic_facet |
Southern ocean Sea surface temperature and salinity Carbonate system Air-sea CO 2 flux Spatial variability Temporal variability [SDU]Sciences of the Universe [physics] |
description |
International audience In situ measurements of sea surface temperature (SST), salinity (SSS), Total Alkalinity (A T ) and Total Carbon (C T ) were obtained during austral summer (mid-February to mid-March) from 2005 to 2019 in the Southern Ocean (SO), along a transect between Hobart, Tasmania and Dumont d'Urville French Antarctic Station. The studied transect is divided in four regions from North to South: the Subtropical Zone (STZ), the Subantarctic Region (SAR), the Antarctic Region (AAR) and the Coastal Antarctic Zone (CAZ). Latitudinal distribution of measured SST, SSS, A T , C T as well as calculated pH, CO 2 parameters (seawater fugacity of CO 2 (fCO 2sw ), difference between seawater and atmospheric fCO 2 (ΔfCO 2 ), CO 2 flux (FCO 2 )) and satellite-derived Chlorophyll a (Chl-a) are discussed. We show that the variability of physical and carbonate parameters in the STZ and north of the SAR are related to the mesoscale activity. In the CAZ, the freshwater inputs from sea-ice melting strongly impact the variability of all parameters. The comparison between physical and carbonate parameters highlights that A T and C T are directly related to the latitudinal variability of SST and SSS. Study of the CO 2 parameters shows that the transect is a sink of CO 2 during February and March, with a mean FCO 2 of -4.0 ± 2.8 mmol m -2 d -1 . The most negative values of FCO 2 are found in the STZ and SAR north of 50°S and in the AAR south of 62°S, where biological activity is high. New simple empirical relationships are developed for A T from SST and SSS and for C T using SST, SSS and atmospheric fCO 2 (fCO 2atm ) for the austral summer in the studied area. Using high resolution SSS and SST from the SURVOSTRAL program, trends of A T and C T are determined in the SAR and the AAR from 2005 to 2019. SST, SSS and A T increase over this period in the SAR, which might be explained by the southward migration of the Subtropical Front. In the AAR, no clear trend is detected. C T increases by 1.0 ± 0.2 and 0.8 ± 0.3 μmol kg -1 yr ... |
author2 |
Austral, Boréal et Carbone (ABC) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Institut de Modélisation et d'Analyses en géo-environnement et santé - Espace Développement (IMAGES-Espace DEV) UMR 228 Espace-Dev, Espace pour le développement Institut de Recherche pour le Développement (IRD)-Université de Perpignan Via Domitia (UPVD)-Avignon Université (AU)-Université de La Réunion (UR)-Université de Guyane (UG)-Université des Antilles (UA)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD)-Université de Perpignan Via Domitia (UPVD)-Avignon Université (AU)-Université de La Réunion (UR)-Université de Guyane (UG)-Université des Antilles (UA)-Université de Montpellier (UM) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Brandon, Margaux Goyet, Catherine Touratier, Franck Lefèvre, Nathalie Kestenare, Élodie Morrow, Rosemary |
author_facet |
Brandon, Margaux Goyet, Catherine Touratier, Franck Lefèvre, Nathalie Kestenare, Élodie Morrow, Rosemary |
author_sort |
Brandon, Margaux |
title |
Spatial and temporal variability of the physical, carbonate and CO 2 properties in the Southern Ocean surface waters during austral summer (2005-2019) |
title_short |
Spatial and temporal variability of the physical, carbonate and CO 2 properties in the Southern Ocean surface waters during austral summer (2005-2019) |
title_full |
Spatial and temporal variability of the physical, carbonate and CO 2 properties in the Southern Ocean surface waters during austral summer (2005-2019) |
title_fullStr |
Spatial and temporal variability of the physical, carbonate and CO 2 properties in the Southern Ocean surface waters during austral summer (2005-2019) |
title_full_unstemmed |
Spatial and temporal variability of the physical, carbonate and CO 2 properties in the Southern Ocean surface waters during austral summer (2005-2019) |
title_sort |
spatial and temporal variability of the physical, carbonate and co 2 properties in the southern ocean surface waters during austral summer (2005-2019) |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://insu.hal.science/insu-03778091 https://insu.hal.science/insu-03778091/document https://insu.hal.science/insu-03778091/file/1-s2.0-S0967063722001480-main.pdf https://doi.org/10.1016/j.dsr.2022.103836 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) |
geographic |
Antarctic Austral Dumont d'Urville Dumont-d'Urville Southern Ocean The Antarctic |
geographic_facet |
Antarctic Austral Dumont d'Urville Dumont-d'Urville Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
ISSN: 0198-0149 Deep-sea research. Part A, Oceanographic research papers https://insu.hal.science/insu-03778091 Deep-sea research. Part A, Oceanographic research papers, 2022, 187, ⟨10.1016/j.dsr.2022.103836⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2022.103836 insu-03778091 https://insu.hal.science/insu-03778091 https://insu.hal.science/insu-03778091/document https://insu.hal.science/insu-03778091/file/1-s2.0-S0967063722001480-main.pdf BIBCODE: 2022DSRI.18703836B doi:10.1016/j.dsr.2022.103836 IRD: fdi:010086434 WOS: 000879158600002 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.dsr.2022.103836 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
187 |
container_start_page |
103836 |
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1786156502139011072 |
spelling |
ftccsdartic:oai:HAL:insu-03778091v1 2023-12-24T10:10:43+01:00 Spatial and temporal variability of the physical, carbonate and CO 2 properties in the Southern Ocean surface waters during austral summer (2005-2019) Brandon, Margaux Goyet, Catherine Touratier, Franck Lefèvre, Nathalie Kestenare, Élodie Morrow, Rosemary Austral, Boréal et Carbone (ABC) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Institut de Modélisation et d'Analyses en géo-environnement et santé - Espace Développement (IMAGES-Espace DEV) UMR 228 Espace-Dev, Espace pour le développement Institut de Recherche pour le Développement (IRD)-Université de Perpignan Via Domitia (UPVD)-Avignon Université (AU)-Université de La Réunion (UR)-Université de Guyane (UG)-Université des Antilles (UA)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD)-Université de Perpignan Via Domitia (UPVD)-Avignon Université (AU)-Université de La Réunion (UR)-Université de Guyane (UG)-Université des Antilles (UA)-Université de Montpellier (UM) Laboratoire d'études en Géophysique et océanographie spatiales (LEGOS) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 2022 https://insu.hal.science/insu-03778091 https://insu.hal.science/insu-03778091/document https://insu.hal.science/insu-03778091/file/1-s2.0-S0967063722001480-main.pdf https://doi.org/10.1016/j.dsr.2022.103836 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2022.103836 insu-03778091 https://insu.hal.science/insu-03778091 https://insu.hal.science/insu-03778091/document https://insu.hal.science/insu-03778091/file/1-s2.0-S0967063722001480-main.pdf BIBCODE: 2022DSRI.18703836B doi:10.1016/j.dsr.2022.103836 IRD: fdi:010086434 WOS: 000879158600002 http://creativecommons.org/licenses/by-nc-nd/ info:eu-repo/semantics/OpenAccess ISSN: 0198-0149 Deep-sea research. Part A, Oceanographic research papers https://insu.hal.science/insu-03778091 Deep-sea research. Part A, Oceanographic research papers, 2022, 187, ⟨10.1016/j.dsr.2022.103836⟩ Southern ocean Sea surface temperature and salinity Carbonate system Air-sea CO 2 flux Spatial variability Temporal variability [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.1016/j.dsr.2022.103836 2023-11-26T00:02:01Z International audience In situ measurements of sea surface temperature (SST), salinity (SSS), Total Alkalinity (A T ) and Total Carbon (C T ) were obtained during austral summer (mid-February to mid-March) from 2005 to 2019 in the Southern Ocean (SO), along a transect between Hobart, Tasmania and Dumont d'Urville French Antarctic Station. The studied transect is divided in four regions from North to South: the Subtropical Zone (STZ), the Subantarctic Region (SAR), the Antarctic Region (AAR) and the Coastal Antarctic Zone (CAZ). Latitudinal distribution of measured SST, SSS, A T , C T as well as calculated pH, CO 2 parameters (seawater fugacity of CO 2 (fCO 2sw ), difference between seawater and atmospheric fCO 2 (ΔfCO 2 ), CO 2 flux (FCO 2 )) and satellite-derived Chlorophyll a (Chl-a) are discussed. We show that the variability of physical and carbonate parameters in the STZ and north of the SAR are related to the mesoscale activity. In the CAZ, the freshwater inputs from sea-ice melting strongly impact the variability of all parameters. The comparison between physical and carbonate parameters highlights that A T and C T are directly related to the latitudinal variability of SST and SSS. Study of the CO 2 parameters shows that the transect is a sink of CO 2 during February and March, with a mean FCO 2 of -4.0 ± 2.8 mmol m -2 d -1 . The most negative values of FCO 2 are found in the STZ and SAR north of 50°S and in the AAR south of 62°S, where biological activity is high. New simple empirical relationships are developed for A T from SST and SSS and for C T using SST, SSS and atmospheric fCO 2 (fCO 2atm ) for the austral summer in the studied area. Using high resolution SSS and SST from the SURVOSTRAL program, trends of A T and C T are determined in the SAR and the AAR from 2005 to 2019. SST, SSS and A T increase over this period in the SAR, which might be explained by the southward migration of the Subtropical Front. In the AAR, no clear trend is detected. C T increases by 1.0 ± 0.2 and 0.8 ± 0.3 μmol kg -1 yr ... Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Austral Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) Southern Ocean The Antarctic Deep Sea Research Part I: Oceanographic Research Papers 187 103836 |