Convergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales
International audience Oceanic uptake of carbon dioxide substantially reduces the rate at which anthropogenic carbon accumulates in the atmosphere, slowing global climate change. Some studies suggest that the rate at which the oceans take up carbon has significantly decreased in recent years. Others...
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ftinsu:oai:HAL:hal-00755359v1 2024-04-28T08:30:09+00:00 Convergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales Mckinley, Galen A. Fay, Amanda R. Takahashi, Taro Metzl, Nicolas 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) 2011-09 https://hal.science/hal-00755359 https://doi.org/10.1038/NGEO1193 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/NGEO1193 hal-00755359 https://hal.science/hal-00755359 BIBCODE: 2011NatGe.4.606M doi:10.1038/NGEO1193 ISSN: 1752-0894 Nature Geoscience https://hal.science/hal-00755359 Nature Geoscience, 2011, 4, pp.606-610. ⟨10.1038/NGEO1193⟩ [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] info:eu-repo/semantics/article Journal articles 2011 ftinsu https://doi.org/10.1038/NGEO1193 2024-04-05T00:22:56Z International audience Oceanic uptake of carbon dioxide substantially reduces the rate at which anthropogenic carbon accumulates in the atmosphere, slowing global climate change. Some studies suggest that the rate at which the oceans take up carbon has significantly decreased in recent years. Others suggest that decadal variability confounds the detection of long-term trends. Here, we examine trends in the partial pressure of carbon dioxide in the surface waters of three large biogeographic regions in the North Atlantic, using observational data collected between 1981 and 2009. We compare these oceanic observations with trends in atmospheric carbon dioxide levels, taken from a global observational network. We show that trends in oceanic carbon dioxide concentrations are variable on a decadal timescale, often diverging from trends in atmospheric carbon dioxide. However, when the entire 29-year period is considered, oceanic trends converge with atmospheric trends in all three regions; it takes 25 years for this long-term trend to emerge and overcome the influence of decadal-scale variability. Furthermore, in the southernmost biome, the data suggest that warming--driven by a multidecadal climate oscillation and anthropogenic forcing--has started to reduce oceanic uptake of carbon in recent years. Article in Journal/Newspaper North Atlantic Institut national des sciences de l'Univers: HAL-INSU Nature Geoscience 4 9 606 610 |
institution |
Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
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] |
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] Mckinley, Galen A. Fay, Amanda R. Takahashi, Taro Metzl, Nicolas Convergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales |
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] |
description |
International audience Oceanic uptake of carbon dioxide substantially reduces the rate at which anthropogenic carbon accumulates in the atmosphere, slowing global climate change. Some studies suggest that the rate at which the oceans take up carbon has significantly decreased in recent years. Others suggest that decadal variability confounds the detection of long-term trends. Here, we examine trends in the partial pressure of carbon dioxide in the surface waters of three large biogeographic regions in the North Atlantic, using observational data collected between 1981 and 2009. We compare these oceanic observations with trends in atmospheric carbon dioxide levels, taken from a global observational network. We show that trends in oceanic carbon dioxide concentrations are variable on a decadal timescale, often diverging from trends in atmospheric carbon dioxide. However, when the entire 29-year period is considered, oceanic trends converge with atmospheric trends in all three regions; it takes 25 years for this long-term trend to emerge and overcome the influence of decadal-scale variability. Furthermore, in the southernmost biome, the data suggest that warming--driven by a multidecadal climate oscillation and anthropogenic forcing--has started to reduce oceanic uptake of carbon in recent years. |
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) |
format |
Article in Journal/Newspaper |
author |
Mckinley, Galen A. Fay, Amanda R. Takahashi, Taro Metzl, Nicolas |
author_facet |
Mckinley, Galen A. Fay, Amanda R. Takahashi, Taro Metzl, Nicolas |
author_sort |
Mckinley, Galen A. |
title |
Convergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales |
title_short |
Convergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales |
title_full |
Convergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales |
title_fullStr |
Convergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales |
title_full_unstemmed |
Convergence of atmospheric and North Atlantic carbon dioxide trends on multidecadal timescales |
title_sort |
convergence of atmospheric and north atlantic carbon dioxide trends on multidecadal timescales |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00755359 https://doi.org/10.1038/NGEO1193 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 1752-0894 Nature Geoscience https://hal.science/hal-00755359 Nature Geoscience, 2011, 4, pp.606-610. ⟨10.1038/NGEO1193⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/NGEO1193 hal-00755359 https://hal.science/hal-00755359 BIBCODE: 2011NatGe.4.606M doi:10.1038/NGEO1193 |
op_doi |
https://doi.org/10.1038/NGEO1193 |
container_title |
Nature Geoscience |
container_volume |
4 |
container_issue |
9 |
container_start_page |
606 |
op_container_end_page |
610 |
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1797588127572819968 |