Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes
The Southern Ocean is of outsized significance to the global oxygen and carbon cycles with relatively poor measurement coverage due to harsh winters and seasonal ice cover. In this study, we use recent advances in the parameterization of air-sea oxygen fluxes to analyze 9 years of oxygen data from a...
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fttriple:oai:gotriple.eu:10670/1.7jh3bf 2023-05-15T14:05:14+02:00 Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes Bushinsky, Seth M. Gray, Alison R. Johnson, Kenneth S. Sarmiento, Jorge L. https://doi.org/10.1002/2017JC012923 https://archimer.ifremer.fr/doc/00662/77390/79008.pdf https://archimer.ifremer.fr/doc/00662/77390/79009.pdf https://archimer.ifremer.fr/doc/00662/77390/ en eng Amer Geophysical Union doi:10.1002/2017JC012923 10670/1.7jh3bf https://archimer.ifremer.fr/doc/00662/77390/79008.pdf https://archimer.ifremer.fr/doc/00662/77390/79009.pdf https://archimer.ifremer.fr/doc/00662/77390/ other Archimer, archive institutionnelle de l'Ifremer Journal Of Geophysical Research-oceans (2169-9275) (Amer Geophysical Union), 2017-11 , Vol. 122 , N. 11 , P. 8661-8682 geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1002/2017JC012923 2023-01-22T18:31:08Z The Southern Ocean is of outsized significance to the global oxygen and carbon cycles with relatively poor measurement coverage due to harsh winters and seasonal ice cover. In this study, we use recent advances in the parameterization of air-sea oxygen fluxes to analyze 9 years of oxygen data from a recalibrated Argo oxygen data set and from air-calibrated oxygen floats deployed as part of the Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) project. From this combined data set of 150 floats, we find a total Southern Ocean oxygen sink of -18380 Tmol yr(-1) (positive to the atmosphere), greater than prior estimates. The uptake occurs primarily in the Polar-Frontal Antarctic Zone (PAZ, -9430 Tmol O-2 yr(-1)) and Seasonal Ice Zone (SIZ, -1119.3 Tmol O-2 yr(-1)). This flux is driven by wintertime ventilation, with a large portion of the flux in the SIZ passing through regions with fractional sea ice. The Subtropical Zone (STZ) is seasonally driven by thermal fluxes and exhibits a net outgassing of 4729 Tmol O-2 yr(-1) that is likely driven by biological production. The Subantarctic Zone (SAZ) uptake is -25 +/- 12 Tmol O-2 yr(-1). Total oxygen fluxes were separated into a thermal and nonthermal component. The nonthermal flux is correlated with net primary production and mixed layer depth in the STZ, SAZ, and PAZ, but not in the SIZ where seasonal sea ice slows the air-sea gas flux response to the entrainment of deep, low-oxygen waters. Text Antarc* Antarctic Sea ice Southern Ocean Unknown Antarctic Southern Ocean Journal of Geophysical Research: Oceans 122 11 8661 8682 |
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geo envir Bushinsky, Seth M. Gray, Alison R. Johnson, Kenneth S. Sarmiento, Jorge L. Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes |
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geo envir |
description |
The Southern Ocean is of outsized significance to the global oxygen and carbon cycles with relatively poor measurement coverage due to harsh winters and seasonal ice cover. In this study, we use recent advances in the parameterization of air-sea oxygen fluxes to analyze 9 years of oxygen data from a recalibrated Argo oxygen data set and from air-calibrated oxygen floats deployed as part of the Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) project. From this combined data set of 150 floats, we find a total Southern Ocean oxygen sink of -18380 Tmol yr(-1) (positive to the atmosphere), greater than prior estimates. The uptake occurs primarily in the Polar-Frontal Antarctic Zone (PAZ, -9430 Tmol O-2 yr(-1)) and Seasonal Ice Zone (SIZ, -1119.3 Tmol O-2 yr(-1)). This flux is driven by wintertime ventilation, with a large portion of the flux in the SIZ passing through regions with fractional sea ice. The Subtropical Zone (STZ) is seasonally driven by thermal fluxes and exhibits a net outgassing of 4729 Tmol O-2 yr(-1) that is likely driven by biological production. The Subantarctic Zone (SAZ) uptake is -25 +/- 12 Tmol O-2 yr(-1). Total oxygen fluxes were separated into a thermal and nonthermal component. The nonthermal flux is correlated with net primary production and mixed layer depth in the STZ, SAZ, and PAZ, but not in the SIZ where seasonal sea ice slows the air-sea gas flux response to the entrainment of deep, low-oxygen waters. |
format |
Text |
author |
Bushinsky, Seth M. Gray, Alison R. Johnson, Kenneth S. Sarmiento, Jorge L. |
author_facet |
Bushinsky, Seth M. Gray, Alison R. Johnson, Kenneth S. Sarmiento, Jorge L. |
author_sort |
Bushinsky, Seth M. |
title |
Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes |
title_short |
Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes |
title_full |
Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes |
title_fullStr |
Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes |
title_full_unstemmed |
Oxygen in the Southern Ocean From Argo Floats: Determination of Processes Driving Air-Sea Fluxes |
title_sort |
oxygen in the southern ocean from argo floats: determination of processes driving air-sea fluxes |
publisher |
Amer Geophysical Union |
url |
https://doi.org/10.1002/2017JC012923 https://archimer.ifremer.fr/doc/00662/77390/79008.pdf https://archimer.ifremer.fr/doc/00662/77390/79009.pdf https://archimer.ifremer.fr/doc/00662/77390/ |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_source |
Archimer, archive institutionnelle de l'Ifremer Journal Of Geophysical Research-oceans (2169-9275) (Amer Geophysical Union), 2017-11 , Vol. 122 , N. 11 , P. 8661-8682 |
op_relation |
doi:10.1002/2017JC012923 10670/1.7jh3bf https://archimer.ifremer.fr/doc/00662/77390/79008.pdf https://archimer.ifremer.fr/doc/00662/77390/79009.pdf https://archimer.ifremer.fr/doc/00662/77390/ |
op_rights |
other |
op_doi |
https://doi.org/10.1002/2017JC012923 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
11 |
container_start_page |
8661 |
op_container_end_page |
8682 |
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1766276978824970240 |