Southern Ocean Calcification Controls the Global Distribution of Alkalinity
Biological processes in Southern Ocean surface waters have widespread impacts on global productivity and oceanic CO2 storage. Here, we demonstrate that biological calcification in the Southern Ocean exerts a strong control on the global distribution of alkalinity. The signature of Southern Ocean cal...
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ftarchimer:oai:archimer.ifremer.fr:87263 2023-05-15T18:23:38+02:00 Southern Ocean Calcification Controls the Global Distribution of Alkalinity Krumhardt, K. M. Long, M. C. Lindsay, K. Levy, M. N. 2020-12 application/pdf https://archimer.ifremer.fr/doc/00761/87263/92797.pdf https://archimer.ifremer.fr/doc/00761/87263/92798.pdf https://doi.org/10.1029/2020GB006727 https://archimer.ifremer.fr/doc/00761/87263/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00761/87263/92797.pdf https://archimer.ifremer.fr/doc/00761/87263/92798.pdf doi:10.1029/2020GB006727 https://archimer.ifremer.fr/doc/00761/87263/ info:eu-repo/semantics/openAccess restricted use Global Biogeochemical Cycles (0886-6236) (Amer Geophysical Union), 2020-12 , Vol. 34 , N. 12 , P. e2020GB006727 (17p.) calcification coccolithophores Earth system model Southern Ocean text Publication info:eu-repo/semantics/article 2020 ftarchimer https://doi.org/10.1029/2020GB006727 2022-03-29T22:49:50Z Biological processes in Southern Ocean surface waters have widespread impacts on global productivity and oceanic CO2 storage. Here, we demonstrate that biological calcification in the Southern Ocean exerts a strong control on the global distribution of alkalinity. The signature of Southern Ocean calcification is evident in observations as a depletion of potential alkalinity within portions of Subantarctic Mode and Intermediate Water. Experiments with an ocean general circulation model indicate that calcification and subsequent sinking of biogenic carbonate in this region effectively transfers alkalinity between the upper and lower cells of the meridional overturning circulation. Southern Ocean calcification traps alkalinity in the deep ocean; decreasing calcification permits more alkalinity to leak out from the Southern Ocean, yielding increased alkalinity in the upper cell and low-latitude surface waters. These processes have implications for atmosphere-ocean partitioning of carbon. Reductions in Southern Ocean calcification increase the buffer capacity of surface waters globally, thereby enhancing the ocean's ability to absorb carbon from the atmosphere. This study highlights the critical role of Southern Ocean calcification in determining global alkalinity distributions, demonstrating that changes in this process have the potential for widespread consequences impacting air-sea partitioning of CO2. Article in Journal/Newspaper Southern Ocean Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Southern Ocean Global Biogeochemical Cycles 34 12 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
calcification coccolithophores Earth system model Southern Ocean |
spellingShingle |
calcification coccolithophores Earth system model Southern Ocean Krumhardt, K. M. Long, M. C. Lindsay, K. Levy, M. N. Southern Ocean Calcification Controls the Global Distribution of Alkalinity |
topic_facet |
calcification coccolithophores Earth system model Southern Ocean |
description |
Biological processes in Southern Ocean surface waters have widespread impacts on global productivity and oceanic CO2 storage. Here, we demonstrate that biological calcification in the Southern Ocean exerts a strong control on the global distribution of alkalinity. The signature of Southern Ocean calcification is evident in observations as a depletion of potential alkalinity within portions of Subantarctic Mode and Intermediate Water. Experiments with an ocean general circulation model indicate that calcification and subsequent sinking of biogenic carbonate in this region effectively transfers alkalinity between the upper and lower cells of the meridional overturning circulation. Southern Ocean calcification traps alkalinity in the deep ocean; decreasing calcification permits more alkalinity to leak out from the Southern Ocean, yielding increased alkalinity in the upper cell and low-latitude surface waters. These processes have implications for atmosphere-ocean partitioning of carbon. Reductions in Southern Ocean calcification increase the buffer capacity of surface waters globally, thereby enhancing the ocean's ability to absorb carbon from the atmosphere. This study highlights the critical role of Southern Ocean calcification in determining global alkalinity distributions, demonstrating that changes in this process have the potential for widespread consequences impacting air-sea partitioning of CO2. |
format |
Article in Journal/Newspaper |
author |
Krumhardt, K. M. Long, M. C. Lindsay, K. Levy, M. N. |
author_facet |
Krumhardt, K. M. Long, M. C. Lindsay, K. Levy, M. N. |
author_sort |
Krumhardt, K. M. |
title |
Southern Ocean Calcification Controls the Global Distribution of Alkalinity |
title_short |
Southern Ocean Calcification Controls the Global Distribution of Alkalinity |
title_full |
Southern Ocean Calcification Controls the Global Distribution of Alkalinity |
title_fullStr |
Southern Ocean Calcification Controls the Global Distribution of Alkalinity |
title_full_unstemmed |
Southern Ocean Calcification Controls the Global Distribution of Alkalinity |
title_sort |
southern ocean calcification controls the global distribution of alkalinity |
publisher |
Amer Geophysical Union |
publishDate |
2020 |
url |
https://archimer.ifremer.fr/doc/00761/87263/92797.pdf https://archimer.ifremer.fr/doc/00761/87263/92798.pdf https://doi.org/10.1029/2020GB006727 https://archimer.ifremer.fr/doc/00761/87263/ |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Global Biogeochemical Cycles (0886-6236) (Amer Geophysical Union), 2020-12 , Vol. 34 , N. 12 , P. e2020GB006727 (17p.) |
op_relation |
https://archimer.ifremer.fr/doc/00761/87263/92797.pdf https://archimer.ifremer.fr/doc/00761/87263/92798.pdf doi:10.1029/2020GB006727 https://archimer.ifremer.fr/doc/00761/87263/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1029/2020GB006727 |
container_title |
Global Biogeochemical Cycles |
container_volume |
34 |
container_issue |
12 |
_version_ |
1766203679191334912 |