Uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar North Atlantic.
International audience Chlorofluorocarbon (CFC) 11 and 12 transports across the transoceanic World Ocean Circulation Experiment (WOCE) A25 section in the subpolar North Atlantic are derived from an inverse model using hydrographic and ADCP data (Lherminier et al., 2007). CFC and anthropogenic carbon...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Online Access: | https://hal.archives-ouvertes.fr/hal-00589102 https://doi.org/10.1016/j.dsr.2010.03.009 |
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ftccsdartic:oai:HAL:hal-00589102v1 2023-05-15T16:03:51+02:00 Uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar North Atlantic. Álvarez, Marta Gourcuff, Claire Instituto Mediterraneo de Estudios Avanzados Institut Mediterrani d'Estudis Avancats (IMEDEA) Consejo Superior de Investigaciones Científicas Madrid (CSIC)-Universidad de las Islas Baleares (UIB)-Consejo Superior de Investigaciones Científicas Madrid (CSIC)-Universidad de las Islas Baleares (UIB) Laboratoire de physique des océans (LPO) 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) Centre National d'Études Spatiales Toulouse (CNES) 2010 https://hal.archives-ouvertes.fr/hal-00589102 https://doi.org/10.1016/j.dsr.2010.03.009 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2010.03.009 hal-00589102 https://hal.archives-ouvertes.fr/hal-00589102 doi:10.1016/j.dsr.2010.03.009 ISSN: 0146-6291 Deep Sea Research https://hal.archives-ouvertes.fr/hal-00589102 Deep Sea Research, Elsevier, 2010, 57 (775), pp.860-868. ⟨10.1016/j.dsr.2010.03.009⟩ Anthropogenic carbon CFC Advective transports Subpolar North Atlantic [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2010 ftccsdartic https://doi.org/10.1016/j.dsr.2010.03.009 2021-10-17T01:54:02Z International audience Chlorofluorocarbon (CFC) 11 and 12 transports across the transoceanic World Ocean Circulation Experiment (WOCE) A25 section in the subpolar North Atlantic are derived from an inverse model using hydrographic and ADCP data (Lherminier et al., 2007). CFC and anthropogenic carbon (CANT) advective transports contrary to expected are uncoupled: CANT is transported northeastwards (82±39 kmol s−1) mainly within the overturning circulation, while CFC-11 and CFC-12 are transported southwestwards (−24±4 and −11±2 mol s−1, respectively) as part of the large-scale horizontal circulation. The main reason for this uncoupled behaviour is the complex CFC vs. CANT relation in the ocean, which stems from the contrasting temperature relation for both tracers: more CANT dissolves in warmer waters with a low Revelle factor, while CFC's solubility is higher in cold waters. These results point to CANT and CFC having different routes of uptake, accumulation and transport within the ocean, and hence: CANT transport would be more sensitive to changes in the overturning circulation strength, while CFC to changes in the East Greenland Current and Labrador Sea Water formation in the Irminger Sea. Additionally, CANT and CFCs would have different sensitivities to circulation and climate changes derived from global warming as the slowdown of the overturning circulation, increase stratification due to warming and changes in wind stress. Article in Journal/Newspaper East Greenland east greenland current Greenland Labrador Sea North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Greenland Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Deep Sea Research Part I: Oceanographic Research Papers 57 7 860 868 |
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Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Anthropogenic carbon CFC Advective transports Subpolar North Atlantic [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Anthropogenic carbon CFC Advective transports Subpolar North Atlantic [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Álvarez, Marta Gourcuff, Claire Uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar North Atlantic. |
topic_facet |
Anthropogenic carbon CFC Advective transports Subpolar North Atlantic [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Chlorofluorocarbon (CFC) 11 and 12 transports across the transoceanic World Ocean Circulation Experiment (WOCE) A25 section in the subpolar North Atlantic are derived from an inverse model using hydrographic and ADCP data (Lherminier et al., 2007). CFC and anthropogenic carbon (CANT) advective transports contrary to expected are uncoupled: CANT is transported northeastwards (82±39 kmol s−1) mainly within the overturning circulation, while CFC-11 and CFC-12 are transported southwestwards (−24±4 and −11±2 mol s−1, respectively) as part of the large-scale horizontal circulation. The main reason for this uncoupled behaviour is the complex CFC vs. CANT relation in the ocean, which stems from the contrasting temperature relation for both tracers: more CANT dissolves in warmer waters with a low Revelle factor, while CFC's solubility is higher in cold waters. These results point to CANT and CFC having different routes of uptake, accumulation and transport within the ocean, and hence: CANT transport would be more sensitive to changes in the overturning circulation strength, while CFC to changes in the East Greenland Current and Labrador Sea Water formation in the Irminger Sea. Additionally, CANT and CFCs would have different sensitivities to circulation and climate changes derived from global warming as the slowdown of the overturning circulation, increase stratification due to warming and changes in wind stress. |
author2 |
Instituto Mediterraneo de Estudios Avanzados Institut Mediterrani d'Estudis Avancats (IMEDEA) Consejo Superior de Investigaciones Científicas Madrid (CSIC)-Universidad de las Islas Baleares (UIB)-Consejo Superior de Investigaciones Científicas Madrid (CSIC)-Universidad de las Islas Baleares (UIB) Laboratoire de physique des océans (LPO) 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) Centre National d'Études Spatiales Toulouse (CNES) |
format |
Article in Journal/Newspaper |
author |
Álvarez, Marta Gourcuff, Claire |
author_facet |
Álvarez, Marta Gourcuff, Claire |
author_sort |
Álvarez, Marta |
title |
Uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar North Atlantic. |
title_short |
Uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar North Atlantic. |
title_full |
Uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar North Atlantic. |
title_fullStr |
Uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar North Atlantic. |
title_full_unstemmed |
Uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar North Atlantic. |
title_sort |
uncoupled transport of chlorofluorocarbons and anthropogenic carbon in the subpolar north atlantic. |
publisher |
HAL CCSD |
publishDate |
2010 |
url |
https://hal.archives-ouvertes.fr/hal-00589102 https://doi.org/10.1016/j.dsr.2010.03.009 |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) |
geographic |
Greenland Irminger Sea |
geographic_facet |
Greenland Irminger Sea |
genre |
East Greenland east greenland current Greenland Labrador Sea North Atlantic |
genre_facet |
East Greenland east greenland current Greenland Labrador Sea North Atlantic |
op_source |
ISSN: 0146-6291 Deep Sea Research https://hal.archives-ouvertes.fr/hal-00589102 Deep Sea Research, Elsevier, 2010, 57 (775), pp.860-868. ⟨10.1016/j.dsr.2010.03.009⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2010.03.009 hal-00589102 https://hal.archives-ouvertes.fr/hal-00589102 doi:10.1016/j.dsr.2010.03.009 |
op_doi |
https://doi.org/10.1016/j.dsr.2010.03.009 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
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57 |
container_issue |
7 |
container_start_page |
860 |
op_container_end_page |
868 |
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