Transports and budgets of anthropogenic CO2 in the tropical North Atlantic in 1992-1993 and 2010-2011
The meridional transport of anthropogenic CO2 (Cant) in the tropical North Atlantic (TNA) is investigated using data from transoceanic sections along 7.5°N and 24.5°N, carried out in the early 1990s and 2010s. The net Cant transport across both sections is northward. At 7.5°N, this transport increas...
Published in: | Global Biogeochemical Cycles |
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Online Access: | http://hdl.handle.net/10553/52756 https://doi.org/10.1002/2014GB005075 |
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/52756 2023-05-15T17:25:27+02:00 Transports and budgets of anthropogenic CO2 in the tropical North Atlantic in 1992-1993 and 2010-2011 Zunino, Patricia Pérez, Fiz F. Fajar, Noelia M. Guallart, Elisa F. Ríos, Aida F. Pelegrí Llopart,José Luis Hernández-Guerra, Alonso Hernandez-Guerra, Alonso Fernandez Perez, Fiz Pelegri, Josep L. Zunino, Patricia Fajar, Noelia 26647237400 56598611300 55246485900 56180059300 7103240290 7003869003 56455072400 2600239 145213 3902456 4783466 329342 358123 660191 2015 http://hdl.handle.net/10553/52756 https://doi.org/10.1002/2014GB005075 eng eng Memoria Oceánica Del Clima: Flujo de Aguas Intermedias en El Atlántico Austral y Su Transformación en Aguas Superficiales en El Atlántico Ecuatorial. Expedición de Circunnavegación Malaspina 2010: Cambio Global y Exploración Del Océano Global Global Biogeochemical Cycles 0886-6236 http://hdl.handle.net/10553/52756 doi:10.1002/2014GB005075 84939251344 000359810400010 1091 7 1075 29 A-4747-2008 B-9001-2011 No ID Global Biogeochemical Cycles [ISSN 0886-6236], v. 29 (7), p. 1075-1091 251007 Oceanografía física Anthropogenic CO2 Transport Storage rate Air‐sea fluxes Changes in circulation Tropical North Atlantic info:eu-repo/semantics/article Article 2015 ftunivlaspalmas https://doi.org/10.1002/2014GB005075 2020-03-04T00:11:38Z The meridional transport of anthropogenic CO2 (Cant) in the tropical North Atlantic (TNA) is investigated using data from transoceanic sections along 7.5°N and 24.5°N, carried out in the early 1990s and 2010s. The net Cant transport across both sections is northward. At 7.5°N, this transport increased from 315 ± 47 kmol s−1 in 1993 to 493 ± 51 kmol s−1 in 2010; similarly, across 24.5°N it grew from 530 ± 46 kmol s−1 in 1992 to 662 ± 49 kmol s−1 in 2011. These changes result from modifications in the intermediate and deep circulation patterns, as well as from Cant increase within the thermocline waters. In deep waters, lateral advection causes a net Cant input of 112 ± 60 kmol s−1 (234 ± 65 kmol s−1) in 1992–1993 (2010–2011); within these deep waters, the storage rate of Cant is not statistically different from the net Cant input, 139 ± 21 kmol s−1 (188 ± 21 kmol s−1) in 1992–1993 (2010–2011). The Cant increase in deep waters is due to the large injection of Cant across the 24.5°N by the Deep Western Boundary Current and the northward recirculation of North Atlantic Deep Water along 7.5°N. In contrast, a large net Cant output in the upper layer is caused by the Florida Current. Despite this net Cant output, the Cant accumulates at a rate of 215 ± 24 kmol s−1 (291 ± 24 kmol s−1) referenced to year 1993 (2010). From the two Cant budgets, we infer a Cant air‐sea flux of 0.23 ± 0.02 Pg yr−1in the TNA, much larger than previous estimates. Article in Journal/Newspaper North Atlantic Deep Water North Atlantic Universidad de Las Palmas de Gran Canaria: Acceda Global Biogeochemical Cycles 29 7 1075 1091 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
251007 Oceanografía física Anthropogenic CO2 Transport Storage rate Air‐sea fluxes Changes in circulation Tropical North Atlantic |
spellingShingle |
251007 Oceanografía física Anthropogenic CO2 Transport Storage rate Air‐sea fluxes Changes in circulation Tropical North Atlantic Zunino, Patricia Pérez, Fiz F. Fajar, Noelia M. Guallart, Elisa F. Ríos, Aida F. Pelegrí Llopart,José Luis Hernández-Guerra, Alonso Transports and budgets of anthropogenic CO2 in the tropical North Atlantic in 1992-1993 and 2010-2011 |
topic_facet |
251007 Oceanografía física Anthropogenic CO2 Transport Storage rate Air‐sea fluxes Changes in circulation Tropical North Atlantic |
description |
The meridional transport of anthropogenic CO2 (Cant) in the tropical North Atlantic (TNA) is investigated using data from transoceanic sections along 7.5°N and 24.5°N, carried out in the early 1990s and 2010s. The net Cant transport across both sections is northward. At 7.5°N, this transport increased from 315 ± 47 kmol s−1 in 1993 to 493 ± 51 kmol s−1 in 2010; similarly, across 24.5°N it grew from 530 ± 46 kmol s−1 in 1992 to 662 ± 49 kmol s−1 in 2011. These changes result from modifications in the intermediate and deep circulation patterns, as well as from Cant increase within the thermocline waters. In deep waters, lateral advection causes a net Cant input of 112 ± 60 kmol s−1 (234 ± 65 kmol s−1) in 1992–1993 (2010–2011); within these deep waters, the storage rate of Cant is not statistically different from the net Cant input, 139 ± 21 kmol s−1 (188 ± 21 kmol s−1) in 1992–1993 (2010–2011). The Cant increase in deep waters is due to the large injection of Cant across the 24.5°N by the Deep Western Boundary Current and the northward recirculation of North Atlantic Deep Water along 7.5°N. In contrast, a large net Cant output in the upper layer is caused by the Florida Current. Despite this net Cant output, the Cant accumulates at a rate of 215 ± 24 kmol s−1 (291 ± 24 kmol s−1) referenced to year 1993 (2010). From the two Cant budgets, we infer a Cant air‐sea flux of 0.23 ± 0.02 Pg yr−1in the TNA, much larger than previous estimates. |
author2 |
Hernandez-Guerra, Alonso Fernandez Perez, Fiz Pelegri, Josep L. Zunino, Patricia Fajar, Noelia 26647237400 56598611300 55246485900 56180059300 7103240290 7003869003 56455072400 2600239 145213 3902456 4783466 329342 358123 660191 |
format |
Article in Journal/Newspaper |
author |
Zunino, Patricia Pérez, Fiz F. Fajar, Noelia M. Guallart, Elisa F. Ríos, Aida F. Pelegrí Llopart,José Luis Hernández-Guerra, Alonso |
author_facet |
Zunino, Patricia Pérez, Fiz F. Fajar, Noelia M. Guallart, Elisa F. Ríos, Aida F. Pelegrí Llopart,José Luis Hernández-Guerra, Alonso |
author_sort |
Zunino, Patricia |
title |
Transports and budgets of anthropogenic CO2 in the tropical North Atlantic in 1992-1993 and 2010-2011 |
title_short |
Transports and budgets of anthropogenic CO2 in the tropical North Atlantic in 1992-1993 and 2010-2011 |
title_full |
Transports and budgets of anthropogenic CO2 in the tropical North Atlantic in 1992-1993 and 2010-2011 |
title_fullStr |
Transports and budgets of anthropogenic CO2 in the tropical North Atlantic in 1992-1993 and 2010-2011 |
title_full_unstemmed |
Transports and budgets of anthropogenic CO2 in the tropical North Atlantic in 1992-1993 and 2010-2011 |
title_sort |
transports and budgets of anthropogenic co2 in the tropical north atlantic in 1992-1993 and 2010-2011 |
publishDate |
2015 |
url |
http://hdl.handle.net/10553/52756 https://doi.org/10.1002/2014GB005075 |
genre |
North Atlantic Deep Water North Atlantic |
genre_facet |
North Atlantic Deep Water North Atlantic |
op_source |
Global Biogeochemical Cycles [ISSN 0886-6236], v. 29 (7), p. 1075-1091 |
op_relation |
Memoria Oceánica Del Clima: Flujo de Aguas Intermedias en El Atlántico Austral y Su Transformación en Aguas Superficiales en El Atlántico Ecuatorial. Expedición de Circunnavegación Malaspina 2010: Cambio Global y Exploración Del Océano Global Global Biogeochemical Cycles 0886-6236 http://hdl.handle.net/10553/52756 doi:10.1002/2014GB005075 84939251344 000359810400010 1091 7 1075 29 A-4747-2008 B-9001-2011 No ID |
op_doi |
https://doi.org/10.1002/2014GB005075 |
container_title |
Global Biogeochemical Cycles |
container_volume |
29 |
container_issue |
7 |
container_start_page |
1075 |
op_container_end_page |
1091 |
_version_ |
1766116886321299456 |