Distribution and inventory of anthropogenic CO 2 in the Southern Ocean: Comparison of three data-based methods
The Southern Ocean is thought to play an important role in the context of global warming and anthropogenic emissions of CO 2 due to its high sensitivity to both climate change and changes in the carbon cycle. Assessing the penetration of anthropogenic CO 2 (C ant) into the Southern Ocean is therefor...
Published in: | Journal of Geophysical Research |
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Main Authors: | , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2005
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Online Access: | https://hal.science/hal-00124678 https://hal.science/hal-00124678/document https://hal.science/hal-00124678/file/2004JC002571.pdf https://doi.org/10.1029/2004JC002571 |
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openpolar |
institution |
Open Polar |
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Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes Lo Monaco, Claire Goyet, Catherine Metzl, Nicolas Poisson, Alain Touratier, Franck Distribution and inventory of anthropogenic CO 2 in the Southern Ocean: Comparison of three data-based methods |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
description |
The Southern Ocean is thought to play an important role in the context of global warming and anthropogenic emissions of CO 2 due to its high sensitivity to both climate change and changes in the carbon cycle. Assessing the penetration of anthropogenic CO 2 (C ant) into the Southern Ocean is therefore highly relevant to reduce the uncertainties attached to both the present knowledge of anthropogenic carbon inventories and predictions made by current ocean carbon models. This study compares different databased approaches for estimating the distribution of C ant in the ocean: a recently developed method based on the composite Tracer Combining Oxygen, Inorganic Carbon, and Total Alkalinity (TrOCA) and the ''historical'' back-calculation methods (the so-called DC* and preformed dissolved inorganic carbon methods). Note that the back-calculation technique requires special care when used in the Southern Ocean, where surface oxygen can significantly deviate from equilibrium with the atmosphere. All three methods were applied to data collected at the Indian-Atlantic boundary (WOCE line I6), where significant transient tracer concentrations were observed in deep and bottom waters. North of 50°S, distribution and inventories of C ant are coherent with previous data-based and model estimates, but we found larger storage of C ant south of 50°S as compared to the midlatitude region. In that, our results disagree with most previous estimates and suggest that the global inventory of anthropogenic CO 2 in the Southern Ocean could be much larger than what is currently believed. |
author2 |
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) Laboratoire de Biophysique et Dynamique des Systèmes Intégrés (BDSI) Université de Perpignan Via Domitia (UPVD) |
format |
Article in Journal/Newspaper |
author |
Lo Monaco, Claire Goyet, Catherine Metzl, Nicolas Poisson, Alain Touratier, Franck |
author_facet |
Lo Monaco, Claire Goyet, Catherine Metzl, Nicolas Poisson, Alain Touratier, Franck |
author_sort |
Lo Monaco, Claire |
title |
Distribution and inventory of anthropogenic CO 2 in the Southern Ocean: Comparison of three data-based methods |
title_short |
Distribution and inventory of anthropogenic CO 2 in the Southern Ocean: Comparison of three data-based methods |
title_full |
Distribution and inventory of anthropogenic CO 2 in the Southern Ocean: Comparison of three data-based methods |
title_fullStr |
Distribution and inventory of anthropogenic CO 2 in the Southern Ocean: Comparison of three data-based methods |
title_full_unstemmed |
Distribution and inventory of anthropogenic CO 2 in the Southern Ocean: Comparison of three data-based methods |
title_sort |
distribution and inventory of anthropogenic co 2 in the southern ocean: comparison of three data-based methods |
publisher |
HAL CCSD |
publishDate |
2005 |
url |
https://hal.science/hal-00124678 https://hal.science/hal-00124678/document https://hal.science/hal-00124678/file/2004JC002571.pdf https://doi.org/10.1029/2004JC002571 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00124678 Journal of Geophysical Research, 2005, 110, pp.C09S02. ⟨10.1029/2004JC002571⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2004JC002571 hal-00124678 https://hal.science/hal-00124678 https://hal.science/hal-00124678/document https://hal.science/hal-00124678/file/2004JC002571.pdf BIBCODE: 2005JGRC.110.9S02L doi:10.1029/2004JC002571 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2004JC002571 |
container_title |
Journal of Geophysical Research |
container_volume |
110 |
container_issue |
C9 |
_version_ |
1799467192316592128 |
spelling |
ftuniversailles:oai:HAL:hal-00124678v1 2024-05-19T07:48:50+00:00 Distribution and inventory of anthropogenic CO 2 in the Southern Ocean: Comparison of three data-based methods Lo Monaco, Claire Goyet, Catherine Metzl, Nicolas Poisson, Alain Touratier, Franck 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) Laboratoire de Biophysique et Dynamique des Systèmes Intégrés (BDSI) Université de Perpignan Via Domitia (UPVD) 2005 https://hal.science/hal-00124678 https://hal.science/hal-00124678/document https://hal.science/hal-00124678/file/2004JC002571.pdf https://doi.org/10.1029/2004JC002571 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2004JC002571 hal-00124678 https://hal.science/hal-00124678 https://hal.science/hal-00124678/document https://hal.science/hal-00124678/file/2004JC002571.pdf BIBCODE: 2005JGRC.110.9S02L doi:10.1029/2004JC002571 info:eu-repo/semantics/OpenAccess ISSN: 0148-0227 EISSN: 2156-2202 Journal of Geophysical Research https://hal.science/hal-00124678 Journal of Geophysical Research, 2005, 110, pp.C09S02. ⟨10.1029/2004JC002571⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2005 ftuniversailles https://doi.org/10.1029/2004JC002571 2024-04-25T00:28:17Z The Southern Ocean is thought to play an important role in the context of global warming and anthropogenic emissions of CO 2 due to its high sensitivity to both climate change and changes in the carbon cycle. Assessing the penetration of anthropogenic CO 2 (C ant) into the Southern Ocean is therefore highly relevant to reduce the uncertainties attached to both the present knowledge of anthropogenic carbon inventories and predictions made by current ocean carbon models. This study compares different databased approaches for estimating the distribution of C ant in the ocean: a recently developed method based on the composite Tracer Combining Oxygen, Inorganic Carbon, and Total Alkalinity (TrOCA) and the ''historical'' back-calculation methods (the so-called DC* and preformed dissolved inorganic carbon methods). Note that the back-calculation technique requires special care when used in the Southern Ocean, where surface oxygen can significantly deviate from equilibrium with the atmosphere. All three methods were applied to data collected at the Indian-Atlantic boundary (WOCE line I6), where significant transient tracer concentrations were observed in deep and bottom waters. North of 50°S, distribution and inventories of C ant are coherent with previous data-based and model estimates, but we found larger storage of C ant south of 50°S as compared to the midlatitude region. In that, our results disagree with most previous estimates and suggest that the global inventory of anthropogenic CO 2 in the Southern Ocean could be much larger than what is currently believed. Article in Journal/Newspaper Southern Ocean Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Journal of Geophysical Research 110 C9 |