Decadal acidification in the water masses of the Atlantic Ocean
6 páginas, 5 figuras, 1 tabla.-- Proyecto Carbochange.-- Open access Global ocean acidification is caused primarily by the ocean’s uptake of CO2 as a consequence of increasing atmospheric CO2 levels. We present observations of the oceanic decrease in pH at the basin scale (50°S–36°N) for the Atlanti...
Published in: | Proceedings of the National Academy of Sciences |
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National Academy of Sciences (U.S.)
2015
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Online Access: | http://hdl.handle.net/10261/121612 https://doi.org/10.1073/pnas.1504613112 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/100000192 |
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ftcsic:oai:digital.csic.es:10261/121612 2024-02-11T10:06:24+01:00 Decadal acidification in the water masses of the Atlantic Ocean Ríos, Aida F. Resplandy, Laure García-Ibáñez, Maribel I. Fajar, Noelia Velo, A. Padín, X. A. Wanninkhof, Rik Steinfeldt, Reiner Rosón, Gabriel Pérez, Fiz F. Ministerio de Ciencia e Innovación (España) European Commission National Oceanic and Atmospheric Administration (US) 2015 http://hdl.handle.net/10261/121612 https://doi.org/10.1073/pnas.1504613112 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/100000192 en eng National Academy of Sciences (U.S.) #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/264879 Publisher's version http://dx.doi.org/10.1073/pnas.1504613112 Sí Proceedings of the National Academy of Sciences of the USA 112(32): 9950-9955 (2015) http://hdl.handle.net/10261/121612 doi:10.1073/pnas.1504613112 1091-6490 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/100000192 26216947 open Ocean acidification pH Anthropogenic carbon Water masses Climate models artículo http://purl.org/coar/resource_type/c_6501 2015 ftcsic https://doi.org/10.1073/pnas.150461311210.13039/50110000483710.13039/50110000078010.13039/100000192 2024-01-16T10:10:20Z 6 páginas, 5 figuras, 1 tabla.-- Proyecto Carbochange.-- Open access Global ocean acidification is caused primarily by the ocean’s uptake of CO2 as a consequence of increasing atmospheric CO2 levels. We present observations of the oceanic decrease in pH at the basin scale (50°S–36°N) for the Atlantic Ocean over two decades (1993–2013). Changes in pH associated with the uptake of anthropogenic CO2 (ΔpHCant) and with variations caused by biological activity and ocean circulation (ΔpHNat) are evaluated for different water masses. Output from an Institut Pierre Simon Laplace climate model is used to place the results into a longer-term perspective and to elucidate the mechanisms responsible for pH change. The largest decreases in pH (∆pH) were observed in central, mode, and intermediate waters, with a maximum ΔpH value in South Atlantic Central Waters of −0.042 ± 0.003. The ΔpH trended toward zero in deep and bottom waters. Observations and model results show that pH changes generally are dominated by the anthropogenic component, which accounts for rates between −0.0015 and −0.0020/y in the central waters. The anthropogenic and natural components are of the same order of magnitude and reinforce one another in mode and intermediate waters over the time period. Large negative ΔpHNat values observed in mode and intermediate waters are driven primarily by changes in CO2 content and are consistent with (i) a poleward shift of the formation region during the positive phase of the Southern Annular Mode in the South Atlantic and (ii) an increase in the rate of the water mass formation in the North Atlantic This research was supported by the Spanish Ministry of Sciences and Innovation and was cofunded by the European Regional Development Fund 2007–2012 (FEDER) through the Carbon Transport and Acidification Rates in the North Atlantic Project (CTM2010-17141/MAR), by the European Union Seventh Framework Programme CARBOCHANGE project under Grant Agreement 264879, and by the Office of Atmospheric and Oceanic Research of the ... Article in Journal/Newspaper North Atlantic Ocean acidification Digital.CSIC (Spanish National Research Council) Laplace ENVELOPE(141.467,141.467,-66.782,-66.782) Proceedings of the National Academy of Sciences 112 32 9950 9955 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Ocean acidification pH Anthropogenic carbon Water masses Climate models |
spellingShingle |
Ocean acidification pH Anthropogenic carbon Water masses Climate models Ríos, Aida F. Resplandy, Laure García-Ibáñez, Maribel I. Fajar, Noelia Velo, A. Padín, X. A. Wanninkhof, Rik Steinfeldt, Reiner Rosón, Gabriel Pérez, Fiz F. Decadal acidification in the water masses of the Atlantic Ocean |
topic_facet |
Ocean acidification pH Anthropogenic carbon Water masses Climate models |
description |
6 páginas, 5 figuras, 1 tabla.-- Proyecto Carbochange.-- Open access Global ocean acidification is caused primarily by the ocean’s uptake of CO2 as a consequence of increasing atmospheric CO2 levels. We present observations of the oceanic decrease in pH at the basin scale (50°S–36°N) for the Atlantic Ocean over two decades (1993–2013). Changes in pH associated with the uptake of anthropogenic CO2 (ΔpHCant) and with variations caused by biological activity and ocean circulation (ΔpHNat) are evaluated for different water masses. Output from an Institut Pierre Simon Laplace climate model is used to place the results into a longer-term perspective and to elucidate the mechanisms responsible for pH change. The largest decreases in pH (∆pH) were observed in central, mode, and intermediate waters, with a maximum ΔpH value in South Atlantic Central Waters of −0.042 ± 0.003. The ΔpH trended toward zero in deep and bottom waters. Observations and model results show that pH changes generally are dominated by the anthropogenic component, which accounts for rates between −0.0015 and −0.0020/y in the central waters. The anthropogenic and natural components are of the same order of magnitude and reinforce one another in mode and intermediate waters over the time period. Large negative ΔpHNat values observed in mode and intermediate waters are driven primarily by changes in CO2 content and are consistent with (i) a poleward shift of the formation region during the positive phase of the Southern Annular Mode in the South Atlantic and (ii) an increase in the rate of the water mass formation in the North Atlantic This research was supported by the Spanish Ministry of Sciences and Innovation and was cofunded by the European Regional Development Fund 2007–2012 (FEDER) through the Carbon Transport and Acidification Rates in the North Atlantic Project (CTM2010-17141/MAR), by the European Union Seventh Framework Programme CARBOCHANGE project under Grant Agreement 264879, and by the Office of Atmospheric and Oceanic Research of the ... |
author2 |
Ministerio de Ciencia e Innovación (España) European Commission National Oceanic and Atmospheric Administration (US) |
format |
Article in Journal/Newspaper |
author |
Ríos, Aida F. Resplandy, Laure García-Ibáñez, Maribel I. Fajar, Noelia Velo, A. Padín, X. A. Wanninkhof, Rik Steinfeldt, Reiner Rosón, Gabriel Pérez, Fiz F. |
author_facet |
Ríos, Aida F. Resplandy, Laure García-Ibáñez, Maribel I. Fajar, Noelia Velo, A. Padín, X. A. Wanninkhof, Rik Steinfeldt, Reiner Rosón, Gabriel Pérez, Fiz F. |
author_sort |
Ríos, Aida F. |
title |
Decadal acidification in the water masses of the Atlantic Ocean |
title_short |
Decadal acidification in the water masses of the Atlantic Ocean |
title_full |
Decadal acidification in the water masses of the Atlantic Ocean |
title_fullStr |
Decadal acidification in the water masses of the Atlantic Ocean |
title_full_unstemmed |
Decadal acidification in the water masses of the Atlantic Ocean |
title_sort |
decadal acidification in the water masses of the atlantic ocean |
publisher |
National Academy of Sciences (U.S.) |
publishDate |
2015 |
url |
http://hdl.handle.net/10261/121612 https://doi.org/10.1073/pnas.1504613112 https://doi.org/10.13039/501100004837 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/100000192 |
long_lat |
ENVELOPE(141.467,141.467,-66.782,-66.782) |
geographic |
Laplace |
geographic_facet |
Laplace |
genre |
North Atlantic Ocean acidification |
genre_facet |
North Atlantic Ocean acidification |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/EC/FP7/264879 Publisher's version http://dx.doi.org/10.1073/pnas.1504613112 Sí Proceedings of the National Academy of Sciences of the USA 112(32): 9950-9955 (2015) http://hdl.handle.net/10261/121612 doi:10.1073/pnas.1504613112 1091-6490 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/100000192 26216947 |
op_rights |
open |
op_doi |
https://doi.org/10.1073/pnas.150461311210.13039/50110000483710.13039/50110000078010.13039/100000192 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
112 |
container_issue |
32 |
container_start_page |
9950 |
op_container_end_page |
9955 |
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1790604083685490688 |