Ocean carbonate system variability in the North Atlantic Subpolar surface water (1993-2017)
The North Atlantic is one of the major ocean sinks for natural and anthropogenic atmospheric CO 2. Given the variability of the circulation, convective processes or warming-cooling recognized in the high latitudes in this region , a better understanding of the CO 2 sink temporal variability and asso...
Published in: | Biogeosciences |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Online Access: | https://hal.archives-ouvertes.fr/hal-02573889 https://hal.archives-ouvertes.fr/hal-02573889/document https://hal.archives-ouvertes.fr/hal-02573889/file/Leseurre-bg-17-2553-2020.pdf https://doi.org/10.5194/bg-17-2553-2020 |
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ftccsdartic:oai:HAL:hal-02573889v1 |
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openpolar |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.MCG]Environmental Sciences/Global Changes Leseurre, Coraline Lo Monaco, Claire Reverdin, Gilles Metzl, Nicolas Fin, Jonathan Ólafsdóttir, Sólveig R. Racapé, Virginie Ocean carbonate system variability in the North Atlantic Subpolar surface water (1993-2017) |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.MCG]Environmental Sciences/Global Changes |
description |
The North Atlantic is one of the major ocean sinks for natural and anthropogenic atmospheric CO 2. Given the variability of the circulation, convective processes or warming-cooling recognized in the high latitudes in this region , a better understanding of the CO 2 sink temporal variability and associated acidification needs a close inspection of seasonal, interannual to multidecadal observations. In this study, we investigate the evolution of CO 2 uptake and ocean acidification in the North Atlantic Subpolar Gyre (50-64 • N) using repeated observations collected over the last 3 decades in the framework of the long-term monitoring program SURATLANT (SURveillance de l'ATLANTique). Over the full period (1993-2017) pH decreases (−0.0017 yr −1) and fugacity of CO 2 (f CO 2) increases (+1.70 µatm yr −1). The trend of f CO 2 in surface water is slightly less than the atmospheric rate (+1.96 µatm yr −1). This is mainly due to dissolved inorganic carbon (DIC) increase associated with the anthropogenic signal. However, over shorter periods (4-10 years) and depending on the season, we detect significant variability investigated in more detail in this study. Data obtained between 1993 and 1997 suggest a rapid increase in f CO 2 in summer (up to +14 µatm yr −1) that was driven by a significant warming and an increase in DIC for a short period. Similar f CO 2 trends are observed between 2001 and 2007 during both summer and winter, but, without significant warming detected, these trends are mainly explained by an increase in DIC and a decrease in alkalinity. This also leads to a pH decrease but with contrasting trends depending on the region and season (between −0.006 and −0.013 yr −1). Conversely , data obtained during the last decade (2008-2017) in summer show a cooling of surface waters and an increase in alkalinity, leading to a strong decrease in surface f CO 2 (between −4.4 and −2.3 µatm yr −1 i.e., the ocean CO 2 sink increases). Surprisingly, during summer, pH increases up to +0.0052 yr −1 in the southern subpolar ... |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) Cycles biogéochimiques marins : processus et perturbations (CYBIOM) 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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Processus et interactions de fine échelle océanique (PROTEO) Marine and Freshwater Research Institute Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) European Project: 30029,CARBOOCEAN European Project: 264879,EC:FP7:ENV,FP7-ENV-2010,CARBOCHANGE(2011) |
format |
Article in Journal/Newspaper |
author |
Leseurre, Coraline Lo Monaco, Claire Reverdin, Gilles Metzl, Nicolas Fin, Jonathan Ólafsdóttir, Sólveig R. Racapé, Virginie |
author_facet |
Leseurre, Coraline Lo Monaco, Claire Reverdin, Gilles Metzl, Nicolas Fin, Jonathan Ólafsdóttir, Sólveig R. Racapé, Virginie |
author_sort |
Leseurre, Coraline |
title |
Ocean carbonate system variability in the North Atlantic Subpolar surface water (1993-2017) |
title_short |
Ocean carbonate system variability in the North Atlantic Subpolar surface water (1993-2017) |
title_full |
Ocean carbonate system variability in the North Atlantic Subpolar surface water (1993-2017) |
title_fullStr |
Ocean carbonate system variability in the North Atlantic Subpolar surface water (1993-2017) |
title_full_unstemmed |
Ocean carbonate system variability in the North Atlantic Subpolar surface water (1993-2017) |
title_sort |
ocean carbonate system variability in the north atlantic subpolar surface water (1993-2017) |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.archives-ouvertes.fr/hal-02573889 https://hal.archives-ouvertes.fr/hal-02573889/document https://hal.archives-ouvertes.fr/hal-02573889/file/Leseurre-bg-17-2553-2020.pdf https://doi.org/10.5194/bg-17-2553-2020 |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.archives-ouvertes.fr/hal-02573889 Biogeosciences, European Geosciences Union, 2020, 17 (9), pp.2553 - 2577. ⟨10.5194/bg-17-2553-2020⟩ |
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op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/bg-17-2553-2020 |
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Biogeosciences |
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container_start_page |
2553 |
op_container_end_page |
2577 |
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ftccsdartic:oai:HAL:hal-02573889v1 2023-05-15T17:30:42+02:00 Ocean carbonate system variability in the North Atlantic Subpolar surface water (1993-2017) Leseurre, Coraline Lo Monaco, Claire Reverdin, Gilles Metzl, Nicolas Fin, Jonathan Ólafsdóttir, Sólveig R. Racapé, Virginie Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-École normale supérieure - Paris (ENS Paris) 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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU) Cycles biogéochimiques marins : processus et perturbations (CYBIOM) 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 de Paris (UP)-Institut de Recherche pour le Développement (IRD)-Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Processus et interactions de fine échelle océanique (PROTEO) Marine and Freshwater Research Institute Laboratoire d'Océanographie Physique et Spatiale (LOPS) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS) European Project: 30029,CARBOOCEAN European Project: 264879,EC:FP7:ENV,FP7-ENV-2010,CARBOCHANGE(2011) 2020 https://hal.archives-ouvertes.fr/hal-02573889 https://hal.archives-ouvertes.fr/hal-02573889/document https://hal.archives-ouvertes.fr/hal-02573889/file/Leseurre-bg-17-2553-2020.pdf https://doi.org/10.5194/bg-17-2553-2020 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-17-2553-2020 info:eu-repo/grantAgreement//30029/EU/Marine carbon sources and sinks assessment/CARBOOCEAN info:eu-repo/grantAgreement/EC/FP7/264879/EU/Changes in carbon uptake and emissions by oceans in a changing climate/CARBOCHANGE hal-02573889 https://hal.archives-ouvertes.fr/hal-02573889 https://hal.archives-ouvertes.fr/hal-02573889/document https://hal.archives-ouvertes.fr/hal-02573889/file/Leseurre-bg-17-2553-2020.pdf doi:10.5194/bg-17-2553-2020 WOS: 000535232300001 info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal.archives-ouvertes.fr/hal-02573889 Biogeosciences, European Geosciences Union, 2020, 17 (9), pp.2553 - 2577. ⟨10.5194/bg-17-2553-2020⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2020 ftccsdartic https://doi.org/10.5194/bg-17-2553-2020 2021-12-19T01:20:22Z The North Atlantic is one of the major ocean sinks for natural and anthropogenic atmospheric CO 2. Given the variability of the circulation, convective processes or warming-cooling recognized in the high latitudes in this region , a better understanding of the CO 2 sink temporal variability and associated acidification needs a close inspection of seasonal, interannual to multidecadal observations. In this study, we investigate the evolution of CO 2 uptake and ocean acidification in the North Atlantic Subpolar Gyre (50-64 • N) using repeated observations collected over the last 3 decades in the framework of the long-term monitoring program SURATLANT (SURveillance de l'ATLANTique). Over the full period (1993-2017) pH decreases (−0.0017 yr −1) and fugacity of CO 2 (f CO 2) increases (+1.70 µatm yr −1). The trend of f CO 2 in surface water is slightly less than the atmospheric rate (+1.96 µatm yr −1). This is mainly due to dissolved inorganic carbon (DIC) increase associated with the anthropogenic signal. However, over shorter periods (4-10 years) and depending on the season, we detect significant variability investigated in more detail in this study. Data obtained between 1993 and 1997 suggest a rapid increase in f CO 2 in summer (up to +14 µatm yr −1) that was driven by a significant warming and an increase in DIC for a short period. Similar f CO 2 trends are observed between 2001 and 2007 during both summer and winter, but, without significant warming detected, these trends are mainly explained by an increase in DIC and a decrease in alkalinity. This also leads to a pH decrease but with contrasting trends depending on the region and season (between −0.006 and −0.013 yr −1). Conversely , data obtained during the last decade (2008-2017) in summer show a cooling of surface waters and an increase in alkalinity, leading to a strong decrease in surface f CO 2 (between −4.4 and −2.3 µatm yr −1 i.e., the ocean CO 2 sink increases). Surprisingly, during summer, pH increases up to +0.0052 yr −1 in the southern subpolar ... Article in Journal/Newspaper North Atlantic Ocean acidification Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Biogeosciences 17 9 2553 2577 |