Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes
15 páginas, 3 tablas, 6 figuras.-- Proyecto Carbochange.-- This work is distributed under the Creative Commons Attribution 3.0 License Repeated hydrographic sections provide critically needed data on and understanding of changes in basin-wide ocean CO2 chemistry over multi-decadal timescales. Here,...
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European Geosciences Union
2016
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Online Access: | http://hdl.handle.net/10261/134643 https://doi.org/10.5194/bg-13-3701-2016 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100003329 |
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ftcsic:oai:digital.csic.es:10261/134643 2024-02-11T10:05:07+01:00 Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes García-Ibáñez, Maribel I. Zunino, P. Fröb, Friederike Carracedo, L. Ríos, Aida F. Mercier, Herlé Olsen, Are Pérez, Fiz F. European Commission Ministerio de Economía y Competitividad (España) 2016 http://hdl.handle.net/10261/134643 https://doi.org/10.5194/bg-13-3701-2016 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100003329 en eng European Geosciences Union #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/264879 info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2013-41048-P Publisher's version http://dx.doi.org/10.5194/bg-13-3701-2016 Sí Biogeosciences 13: 3701-3715 (2016) 1726-4170 http://hdl.handle.net/10261/134643 doi:10.5194/bg-13-3701-2016 1726-4189 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 open artículo http://purl.org/coar/resource_type/c_6501 2016 ftcsic https://doi.org/10.5194/bg-13-3701-201610.13039/50110000078010.13039/501100003329 2024-01-16T10:16:26Z 15 páginas, 3 tablas, 6 figuras.-- Proyecto Carbochange.-- This work is distributed under the Creative Commons Attribution 3.0 License Repeated hydrographic sections provide critically needed data on and understanding of changes in basin-wide ocean CO2 chemistry over multi-decadal timescales. Here, high-quality measurements collected at twelve cruises carried out along the same track between 1991 and 2015 have been used to determine long-term changes in ocean CO2 chemistry and ocean acidification in the Irminger and Iceland basins of the North Atlantic Ocean. Trends were determined for each of the main water masses present and are discussed in the context of the basin-wide circulation. The pH has decreased in all water masses of the Irminger and Iceland basins over the past 25 years with the greatest changes in surface and intermediate waters (between −0.0010 ± 0.0001 and −0.0018 ± 0.0001 pH units yr−1). In order to disentangle the drivers of the pH changes, we decomposed the trends into their principal drivers: changes in temperature, salinity, total alkalinity (AT) and total dissolved inorganic carbon (both its natural and anthropogenic components). The increase in anthropogenic CO2 (Cant) was identified as the main agent of the pH decline, partially offset by AT increases. The acidification of intermediate waters caused by Cant uptake has been reinforced by the aging of the water masses over the period of our analysis. The pH decrease of the deep overflow waters in the Irminger basin was similar to that observed in the upper ocean and was mainly linked to the Cant increase, thus reflecting the recent contact of these deep waters with the atmosphere The research leading to these results was supported through the EU FP7 project CARBOCHANGE “Changes in carbon uptake and emissions by oceans in a changing climate”, which received funding from the European Commission’s Seventh Framework Programme under grant agreement no. 264879. For this work M. I. Garcia-Ibáñez, A. F. Rios and F. F. Pérez were supported by ... Article in Journal/Newspaper Iceland North Atlantic Ocean acidification Digital.CSIC (Spanish National Research Council) Irminger Basin ENVELOPE(-36.000,-36.000,61.000,61.000) Biogeosciences 13 12 3701 3715 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
description |
15 páginas, 3 tablas, 6 figuras.-- Proyecto Carbochange.-- This work is distributed under the Creative Commons Attribution 3.0 License Repeated hydrographic sections provide critically needed data on and understanding of changes in basin-wide ocean CO2 chemistry over multi-decadal timescales. Here, high-quality measurements collected at twelve cruises carried out along the same track between 1991 and 2015 have been used to determine long-term changes in ocean CO2 chemistry and ocean acidification in the Irminger and Iceland basins of the North Atlantic Ocean. Trends were determined for each of the main water masses present and are discussed in the context of the basin-wide circulation. The pH has decreased in all water masses of the Irminger and Iceland basins over the past 25 years with the greatest changes in surface and intermediate waters (between −0.0010 ± 0.0001 and −0.0018 ± 0.0001 pH units yr−1). In order to disentangle the drivers of the pH changes, we decomposed the trends into their principal drivers: changes in temperature, salinity, total alkalinity (AT) and total dissolved inorganic carbon (both its natural and anthropogenic components). The increase in anthropogenic CO2 (Cant) was identified as the main agent of the pH decline, partially offset by AT increases. The acidification of intermediate waters caused by Cant uptake has been reinforced by the aging of the water masses over the period of our analysis. The pH decrease of the deep overflow waters in the Irminger basin was similar to that observed in the upper ocean and was mainly linked to the Cant increase, thus reflecting the recent contact of these deep waters with the atmosphere The research leading to these results was supported through the EU FP7 project CARBOCHANGE “Changes in carbon uptake and emissions by oceans in a changing climate”, which received funding from the European Commission’s Seventh Framework Programme under grant agreement no. 264879. For this work M. I. Garcia-Ibáñez, A. F. Rios and F. F. Pérez were supported by ... |
author2 |
European Commission Ministerio de Economía y Competitividad (España) |
format |
Article in Journal/Newspaper |
author |
García-Ibáñez, Maribel I. Zunino, P. Fröb, Friederike Carracedo, L. Ríos, Aida F. Mercier, Herlé Olsen, Are Pérez, Fiz F. |
spellingShingle |
García-Ibáñez, Maribel I. Zunino, P. Fröb, Friederike Carracedo, L. Ríos, Aida F. Mercier, Herlé Olsen, Are Pérez, Fiz F. Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes |
author_facet |
García-Ibáñez, Maribel I. Zunino, P. Fröb, Friederike Carracedo, L. Ríos, Aida F. Mercier, Herlé Olsen, Are Pérez, Fiz F. |
author_sort |
García-Ibáñez, Maribel I. |
title |
Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes |
title_short |
Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes |
title_full |
Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes |
title_fullStr |
Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes |
title_full_unstemmed |
Ocean acidification in the subpolar North Atlantic: rates and mechanisms controlling pH changes |
title_sort |
ocean acidification in the subpolar north atlantic: rates and mechanisms controlling ph changes |
publisher |
European Geosciences Union |
publishDate |
2016 |
url |
http://hdl.handle.net/10261/134643 https://doi.org/10.5194/bg-13-3701-2016 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100003329 |
long_lat |
ENVELOPE(-36.000,-36.000,61.000,61.000) |
geographic |
Irminger Basin |
geographic_facet |
Irminger Basin |
genre |
Iceland North Atlantic Ocean acidification |
genre_facet |
Iceland North Atlantic Ocean acidification |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/264879 info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2013-41048-P Publisher's version http://dx.doi.org/10.5194/bg-13-3701-2016 Sí Biogeosciences 13: 3701-3715 (2016) 1726-4170 http://hdl.handle.net/10261/134643 doi:10.5194/bg-13-3701-2016 1726-4189 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 |
op_rights |
open |
op_doi |
https://doi.org/10.5194/bg-13-3701-201610.13039/50110000078010.13039/501100003329 |
container_title |
Biogeosciences |
container_volume |
13 |
container_issue |
12 |
container_start_page |
3701 |
op_container_end_page |
3715 |
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1790601983914147840 |