Anthropogenic carbon changes in the Irminger Basin (1981–2006): Coupling δ13CDIC and DIC observations

9 páginas, 8 figuras, 2 tablas.-- Proyecto Carbochange The North Atlantic subpolar gyre is considered to be one of the strongest marine anthropogenic CO2 sinks, a consequence of extensive deep convection occurring during winter. Observations collected in this region since 1981 have shown large chang...

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Published in:Journal of Marine Systems
Main Authors: Racapé, V., Pierre, C., Metzl, Nicolas, Lo Monaco, Claire, Reverdin, Gilles, Olsen, Are, Morin, Pascal, Vázquez Rodríguez, Marcos, Ríos, Aida F., Pérez, Fiz F.
Format: Article in Journal/Newspaper
Language:English
Published: Elsevier 2013
Subjects:
Online Access:http://hdl.handle.net/10261/82459
https://doi.org/10.1016/j.jmarsys.2012.12.005
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spelling ftcsic:oai:digital.csic.es:10261/82459 2024-02-11T10:06:20+01:00 Anthropogenic carbon changes in the Irminger Basin (1981–2006): Coupling δ13CDIC and DIC observations Racapé, V. Pierre, C. Metzl, Nicolas Lo Monaco, Claire Reverdin, Gilles Olsen, Are Morin, Pascal Vázquez Rodríguez, Marcos Ríos, Aida F. Pérez, Fiz F. 2013 http://hdl.handle.net/10261/82459 https://doi.org/10.1016/j.jmarsys.2012.12.005 en eng Elsevier #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/264879 http://dx.doi.org/10.1016/j.jmarsys.2012.12.005 Journal of Marine Systems 126: 24-32 (2013) 0924-7963 http://hdl.handle.net/10261/82459 doi:10.1016/j.jmarsys.2012.12.005 1879-1573 open Oceanic 13C Suess effect Anthropogenic carbon North Atlantic Ocean Decadal variation artículo http://purl.org/coar/resource_type/c_6501 2013 ftcsic https://doi.org/10.1016/j.jmarsys.2012.12.005 2024-01-16T09:52:13Z 9 páginas, 8 figuras, 2 tablas.-- Proyecto Carbochange The North Atlantic subpolar gyre is considered to be one of the strongest marine anthropogenic CO2 sinks, a consequence of extensive deep convection occurring during winter. Observations collected in this region since 1981 have shown large changes in Dissolved Inorganic Carbon (DIC) concentrations in intermediate and deep waters, which have been attributed to both anthropogenic CO2 penetration and natural variability in the ocean carbon cycle (Wanninkhof et al., 2010). In this context, we describe new δ13CDIC observations obtained in the Irminger Basin during two OVIDE cruises (2002 and 2006) which we compare to historical data (TTO-NAS 1981) in order to estimate the oceanic 13C Suess Effect over the more than twenty years that separates these surveys. The data reveal a significant decrease in δ13CDIC, of between − 0.3‰ and − 0.4‰ from 1981 to 2006. The anthropogenic change, extracted by using the extended Multi Linear Regression (eMLR) approach, explains 75% of this signal for oldest water mass and 90% for youngest. The reminding signal is due to the natural processes, such as remineralization and vertical mixing. The eMLR method was also applied to DIC measurements which i) reveal strong relationships between the increase of anthropogenic CO2 and the oceanic 13C Suess Effect over the whole water column during the 25-year period and ii) support the hypothesis of change in the Cant storage rate in the Irminger Basin between 1981 and 2006. The OVIDE project was and is still supported by French research institutions, IFREMER and CNRS/INSU, and by the EU FP6 project CARBOOCEAN (511176) and EU FP7 project CARBOCHANGE (264879). This study is also a contribution to the international IMBER/SOLAS projects. The 13C analyses have been also supported by CNRS/INSU (LEFE/OCEANS-C13 project). Peer reviewed Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) Irminger Basin ENVELOPE(-36.000,-36.000,61.000,61.000) Journal of Marine Systems 126 24 32
institution Open Polar
collection Digital.CSIC (Spanish National Research Council)
op_collection_id ftcsic
language English
topic Oceanic 13C Suess effect
Anthropogenic carbon
North Atlantic Ocean
Decadal variation
spellingShingle Oceanic 13C Suess effect
Anthropogenic carbon
North Atlantic Ocean
Decadal variation
Racapé, V.
Pierre, C.
Metzl, Nicolas
Lo Monaco, Claire
Reverdin, Gilles
Olsen, Are
Morin, Pascal
Vázquez Rodríguez, Marcos
Ríos, Aida F.
Pérez, Fiz F.
Anthropogenic carbon changes in the Irminger Basin (1981–2006): Coupling δ13CDIC and DIC observations
topic_facet Oceanic 13C Suess effect
Anthropogenic carbon
North Atlantic Ocean
Decadal variation
description 9 páginas, 8 figuras, 2 tablas.-- Proyecto Carbochange The North Atlantic subpolar gyre is considered to be one of the strongest marine anthropogenic CO2 sinks, a consequence of extensive deep convection occurring during winter. Observations collected in this region since 1981 have shown large changes in Dissolved Inorganic Carbon (DIC) concentrations in intermediate and deep waters, which have been attributed to both anthropogenic CO2 penetration and natural variability in the ocean carbon cycle (Wanninkhof et al., 2010). In this context, we describe new δ13CDIC observations obtained in the Irminger Basin during two OVIDE cruises (2002 and 2006) which we compare to historical data (TTO-NAS 1981) in order to estimate the oceanic 13C Suess Effect over the more than twenty years that separates these surveys. The data reveal a significant decrease in δ13CDIC, of between − 0.3‰ and − 0.4‰ from 1981 to 2006. The anthropogenic change, extracted by using the extended Multi Linear Regression (eMLR) approach, explains 75% of this signal for oldest water mass and 90% for youngest. The reminding signal is due to the natural processes, such as remineralization and vertical mixing. The eMLR method was also applied to DIC measurements which i) reveal strong relationships between the increase of anthropogenic CO2 and the oceanic 13C Suess Effect over the whole water column during the 25-year period and ii) support the hypothesis of change in the Cant storage rate in the Irminger Basin between 1981 and 2006. The OVIDE project was and is still supported by French research institutions, IFREMER and CNRS/INSU, and by the EU FP6 project CARBOOCEAN (511176) and EU FP7 project CARBOCHANGE (264879). This study is also a contribution to the international IMBER/SOLAS projects. The 13C analyses have been also supported by CNRS/INSU (LEFE/OCEANS-C13 project). Peer reviewed
format Article in Journal/Newspaper
author Racapé, V.
Pierre, C.
Metzl, Nicolas
Lo Monaco, Claire
Reverdin, Gilles
Olsen, Are
Morin, Pascal
Vázquez Rodríguez, Marcos
Ríos, Aida F.
Pérez, Fiz F.
author_facet Racapé, V.
Pierre, C.
Metzl, Nicolas
Lo Monaco, Claire
Reverdin, Gilles
Olsen, Are
Morin, Pascal
Vázquez Rodríguez, Marcos
Ríos, Aida F.
Pérez, Fiz F.
author_sort Racapé, V.
title Anthropogenic carbon changes in the Irminger Basin (1981–2006): Coupling δ13CDIC and DIC observations
title_short Anthropogenic carbon changes in the Irminger Basin (1981–2006): Coupling δ13CDIC and DIC observations
title_full Anthropogenic carbon changes in the Irminger Basin (1981–2006): Coupling δ13CDIC and DIC observations
title_fullStr Anthropogenic carbon changes in the Irminger Basin (1981–2006): Coupling δ13CDIC and DIC observations
title_full_unstemmed Anthropogenic carbon changes in the Irminger Basin (1981–2006): Coupling δ13CDIC and DIC observations
title_sort anthropogenic carbon changes in the irminger basin (1981–2006): coupling δ13cdic and dic observations
publisher Elsevier
publishDate 2013
url http://hdl.handle.net/10261/82459
https://doi.org/10.1016/j.jmarsys.2012.12.005
long_lat ENVELOPE(-36.000,-36.000,61.000,61.000)
geographic Irminger Basin
geographic_facet Irminger Basin
genre North Atlantic
genre_facet North Atlantic
op_relation #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/264879
http://dx.doi.org/10.1016/j.jmarsys.2012.12.005
Journal of Marine Systems 126: 24-32 (2013)
0924-7963
http://hdl.handle.net/10261/82459
doi:10.1016/j.jmarsys.2012.12.005
1879-1573
op_rights open
op_doi https://doi.org/10.1016/j.jmarsys.2012.12.005
container_title Journal of Marine Systems
container_volume 126
container_start_page 24
op_container_end_page 32
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