Net additions of recalcitrant dissolved organic carbon in the deep Atlantic Ocean
Most dissolved organic carbon (DOC) sequestered in the deep ocean has residence times of decades to thousands of years, with clear implications for climate regulation, though some net removal is typically observed with increasing water mass age. Here, a high‐quality‐high‐resolution data set has allo...
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ftcsic:oai:digital.csic.es:10261/316743 2024-02-11T10:06:24+01:00 Net additions of recalcitrant dissolved organic carbon in the deep Atlantic Ocean Romera-Castillo, C. (Cristina) Álvarez, M. (Marta) Pelegrí-Llopart, J.L. (José Luis) Hansell, D.A. Álvarez-Salgado, X.A. (Xosé Antón) 2021-11-11T20:56:03Z http://hdl.handle.net/10508/14878 http://hdl.handle.net/10261/316743 https://rss.onlinelibrary.wiley.com/doi/am-pdf/10.1029/2018gb006162 en eng American Geophysical Union (AGU) Centro Oceanográfico de A Coruña https://rss.onlinelibrary.wiley.com/doi/am-pdf/10.1029/2018gb006162 http://hdl.handle.net/10508/14878 http://hdl.handle.net/10261/316743 10.1029/2018GB006162. 25359 open research article N 2021 ftcsic 2024-01-16T11:44:40Z Most dissolved organic carbon (DOC) sequestered in the deep ocean has residence times of decades to thousands of years, with clear implications for climate regulation, though some net removal is typically observed with increasing water mass age. Here, a high‐quality‐high‐resolution data set has allowed us to identify net additions of recalcitrant DOC in specific water masses of the deep South Atlantic. Overall, the South Atlantic is a net source of recalcitrant DOC, adding 0.027 ± 0.019 Pg C/year, while the North Atlantic is a net sink that removes 0.298 ± 0.141 Pg C/year. We find that the balance of addition/removal of recalcitrant DOC depends not only on the origin but also on the temperature, age, and depth of the water masses that circulate and mix in the Atlantic Ocean. Future changes in the water mass composition and circulation patterns due to climate change would eventually affect that balance, altering the carbon cycle. Article in Journal/Newspaper North Atlantic Digital.CSIC (Spanish National Research Council) |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
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ftcsic |
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English |
description |
Most dissolved organic carbon (DOC) sequestered in the deep ocean has residence times of decades to thousands of years, with clear implications for climate regulation, though some net removal is typically observed with increasing water mass age. Here, a high‐quality‐high‐resolution data set has allowed us to identify net additions of recalcitrant DOC in specific water masses of the deep South Atlantic. Overall, the South Atlantic is a net source of recalcitrant DOC, adding 0.027 ± 0.019 Pg C/year, while the North Atlantic is a net sink that removes 0.298 ± 0.141 Pg C/year. We find that the balance of addition/removal of recalcitrant DOC depends not only on the origin but also on the temperature, age, and depth of the water masses that circulate and mix in the Atlantic Ocean. Future changes in the water mass composition and circulation patterns due to climate change would eventually affect that balance, altering the carbon cycle. |
format |
Article in Journal/Newspaper |
author |
Romera-Castillo, C. (Cristina) Álvarez, M. (Marta) Pelegrí-Llopart, J.L. (José Luis) Hansell, D.A. Álvarez-Salgado, X.A. (Xosé Antón) |
spellingShingle |
Romera-Castillo, C. (Cristina) Álvarez, M. (Marta) Pelegrí-Llopart, J.L. (José Luis) Hansell, D.A. Álvarez-Salgado, X.A. (Xosé Antón) Net additions of recalcitrant dissolved organic carbon in the deep Atlantic Ocean |
author_facet |
Romera-Castillo, C. (Cristina) Álvarez, M. (Marta) Pelegrí-Llopart, J.L. (José Luis) Hansell, D.A. Álvarez-Salgado, X.A. (Xosé Antón) |
author_sort |
Romera-Castillo, C. (Cristina) |
title |
Net additions of recalcitrant dissolved organic carbon in the deep Atlantic Ocean |
title_short |
Net additions of recalcitrant dissolved organic carbon in the deep Atlantic Ocean |
title_full |
Net additions of recalcitrant dissolved organic carbon in the deep Atlantic Ocean |
title_fullStr |
Net additions of recalcitrant dissolved organic carbon in the deep Atlantic Ocean |
title_full_unstemmed |
Net additions of recalcitrant dissolved organic carbon in the deep Atlantic Ocean |
title_sort |
net additions of recalcitrant dissolved organic carbon in the deep atlantic ocean |
publisher |
American Geophysical Union (AGU) |
publishDate |
2021 |
url |
http://hdl.handle.net/10508/14878 http://hdl.handle.net/10261/316743 https://rss.onlinelibrary.wiley.com/doi/am-pdf/10.1029/2018gb006162 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://rss.onlinelibrary.wiley.com/doi/am-pdf/10.1029/2018gb006162 http://hdl.handle.net/10508/14878 http://hdl.handle.net/10261/316743 10.1029/2018GB006162. 25359 |
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open |
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1790604100916740096 |