Nitrogen isotopic constraints on nutrient transport to the upper ocean ...
Ocean circulation supplies the surface ocean with the nutrients that fuel global ocean productivity. However, the mechanisms and rates of water and nutrient transport from the deep ocean to the upper ocean are poorly known. Here, we use the nitrogen isotopic composition of nitrate to place observati...
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Online Access: | https://dx.doi.org/10.3929/ethz-b-000524338 http://hdl.handle.net/20.500.11850/524338 |
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ftdatacite:10.3929/ethz-b-000524338 2024-04-28T08:30:36+00:00 Nitrogen isotopic constraints on nutrient transport to the upper ocean ... Fripiat, François Martínez-García, Alfredo Marconi, Dario Fawcett, Sarah E. Kopf, Sebastian H. Luu, Victoria H. Rafter, Patrick A. Zhang, Run Sigman, Daniel M. Haug, Gerald H. 2021 application/pdf https://dx.doi.org/10.3929/ethz-b-000524338 http://hdl.handle.net/20.500.11850/524338 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 article-journal Text ScholarlyArticle Journal Article 2021 ftdatacite https://doi.org/10.3929/ethz-b-000524338 2024-04-02T12:34:54Z Ocean circulation supplies the surface ocean with the nutrients that fuel global ocean productivity. However, the mechanisms and rates of water and nutrient transport from the deep ocean to the upper ocean are poorly known. Here, we use the nitrogen isotopic composition of nitrate to place observational constraints on nutrient transport from the Southern Ocean surface into the global pycnocline (roughly the upper 1.2 km), as opposed to directly from the deep ocean. We estimate that 62 ± 5% of the pycnocline nitrate and phosphate originate from the Southern Ocean. Mixing, as opposed to advection, accounts for most of the gross nutrient input to the pycnocline. However, in net, mixing carries nutrients away from the pycnocline. Despite the quantitative dominance of mixing in the gross nutrient transport, the nutrient richness of the pycnocline relies on the large-scale advective flow, through which nutrient-rich water is converted to nutrient-poor surface water that eventually flows to the North Atlantic. ... : Nature Geoscience, 14 (11) ... Article in Journal/Newspaper North Atlantic Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
description |
Ocean circulation supplies the surface ocean with the nutrients that fuel global ocean productivity. However, the mechanisms and rates of water and nutrient transport from the deep ocean to the upper ocean are poorly known. Here, we use the nitrogen isotopic composition of nitrate to place observational constraints on nutrient transport from the Southern Ocean surface into the global pycnocline (roughly the upper 1.2 km), as opposed to directly from the deep ocean. We estimate that 62 ± 5% of the pycnocline nitrate and phosphate originate from the Southern Ocean. Mixing, as opposed to advection, accounts for most of the gross nutrient input to the pycnocline. However, in net, mixing carries nutrients away from the pycnocline. Despite the quantitative dominance of mixing in the gross nutrient transport, the nutrient richness of the pycnocline relies on the large-scale advective flow, through which nutrient-rich water is converted to nutrient-poor surface water that eventually flows to the North Atlantic. ... : Nature Geoscience, 14 (11) ... |
format |
Article in Journal/Newspaper |
author |
Fripiat, François Martínez-García, Alfredo Marconi, Dario Fawcett, Sarah E. Kopf, Sebastian H. Luu, Victoria H. Rafter, Patrick A. Zhang, Run Sigman, Daniel M. Haug, Gerald H. |
spellingShingle |
Fripiat, François Martínez-García, Alfredo Marconi, Dario Fawcett, Sarah E. Kopf, Sebastian H. Luu, Victoria H. Rafter, Patrick A. Zhang, Run Sigman, Daniel M. Haug, Gerald H. Nitrogen isotopic constraints on nutrient transport to the upper ocean ... |
author_facet |
Fripiat, François Martínez-García, Alfredo Marconi, Dario Fawcett, Sarah E. Kopf, Sebastian H. Luu, Victoria H. Rafter, Patrick A. Zhang, Run Sigman, Daniel M. Haug, Gerald H. |
author_sort |
Fripiat, François |
title |
Nitrogen isotopic constraints on nutrient transport to the upper ocean ... |
title_short |
Nitrogen isotopic constraints on nutrient transport to the upper ocean ... |
title_full |
Nitrogen isotopic constraints on nutrient transport to the upper ocean ... |
title_fullStr |
Nitrogen isotopic constraints on nutrient transport to the upper ocean ... |
title_full_unstemmed |
Nitrogen isotopic constraints on nutrient transport to the upper ocean ... |
title_sort |
nitrogen isotopic constraints on nutrient transport to the upper ocean ... |
publisher |
ETH Zurich |
publishDate |
2021 |
url |
https://dx.doi.org/10.3929/ethz-b-000524338 http://hdl.handle.net/20.500.11850/524338 |
genre |
North Atlantic Southern Ocean |
genre_facet |
North Atlantic Southern Ocean |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.3929/ethz-b-000524338 |
_version_ |
1797588404867694592 |