Evaluation of data-based estimates of anthropogenic carbon in the Arctic Ocean ...
The Arctic Ocean is particularly vulnerable to ocean acidification, a process that is mainly driven by the uptake of anthropogenic carbon (Cant) from the atmosphere. Although Cant concentrations cannot be measured directly in the ocean, they have been estimated using data-based methods such as the t...
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American Geophysical Union
2020
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Online Access: | https://dx.doi.org/10.48350/158653 https://boris.unibe.ch/158653/ |
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ftdatacite:10.48350/158653 2024-09-15T17:53:09+00:00 Evaluation of data-based estimates of anthropogenic carbon in the Arctic Ocean ... Terhaar, J. Tanhua, T. Stöven, T. Orr, J. C. Bopp, L. 2020 https://dx.doi.org/10.48350/158653 https://boris.unibe.ch/158653/ unknown American Geophysical Union open access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 530 Physics Text ScholarlyArticle article-journal journal article 2020 ftdatacite https://doi.org/10.48350/158653 2024-09-02T10:17:31Z The Arctic Ocean is particularly vulnerable to ocean acidification, a process that is mainly driven by the uptake of anthropogenic carbon (Cant) from the atmosphere. Although Cant concentrations cannot be measured directly in the ocean, they have been estimated using data-based methods such as the transient time distribution (TTD) approach, which characterizes the ventilation of water masses with inert transient tracers, such as CFC-12. Here, we evaluate the TTD approach in the Arctic Ocean using an eddying ocean model as a test bed. When the TTD approach is applied to simulated CFC-12 in that model, it underestimates the same model's directly simulated Cant concentrations by up to 12%, a bias that stems from its idealized assumption of gas equilibrium between atmosphere and surface water, both for CFC-12 and anthropogenic CO2. Unlike the idealized assumption, the simulated partial pressure of CFC-12 (pCFC-12) in Arctic surface waters is undersaturated relative to that in the atmosphere in regions and times ... Text Arctic Ocean Ocean acidification DataCite |
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530 Physics |
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530 Physics Terhaar, J. Tanhua, T. Stöven, T. Orr, J. C. Bopp, L. Evaluation of data-based estimates of anthropogenic carbon in the Arctic Ocean ... |
topic_facet |
530 Physics |
description |
The Arctic Ocean is particularly vulnerable to ocean acidification, a process that is mainly driven by the uptake of anthropogenic carbon (Cant) from the atmosphere. Although Cant concentrations cannot be measured directly in the ocean, they have been estimated using data-based methods such as the transient time distribution (TTD) approach, which characterizes the ventilation of water masses with inert transient tracers, such as CFC-12. Here, we evaluate the TTD approach in the Arctic Ocean using an eddying ocean model as a test bed. When the TTD approach is applied to simulated CFC-12 in that model, it underestimates the same model's directly simulated Cant concentrations by up to 12%, a bias that stems from its idealized assumption of gas equilibrium between atmosphere and surface water, both for CFC-12 and anthropogenic CO2. Unlike the idealized assumption, the simulated partial pressure of CFC-12 (pCFC-12) in Arctic surface waters is undersaturated relative to that in the atmosphere in regions and times ... |
format |
Text |
author |
Terhaar, J. Tanhua, T. Stöven, T. Orr, J. C. Bopp, L. |
author_facet |
Terhaar, J. Tanhua, T. Stöven, T. Orr, J. C. Bopp, L. |
author_sort |
Terhaar, J. |
title |
Evaluation of data-based estimates of anthropogenic carbon in the Arctic Ocean ... |
title_short |
Evaluation of data-based estimates of anthropogenic carbon in the Arctic Ocean ... |
title_full |
Evaluation of data-based estimates of anthropogenic carbon in the Arctic Ocean ... |
title_fullStr |
Evaluation of data-based estimates of anthropogenic carbon in the Arctic Ocean ... |
title_full_unstemmed |
Evaluation of data-based estimates of anthropogenic carbon in the Arctic Ocean ... |
title_sort |
evaluation of data-based estimates of anthropogenic carbon in the arctic ocean ... |
publisher |
American Geophysical Union |
publishDate |
2020 |
url |
https://dx.doi.org/10.48350/158653 https://boris.unibe.ch/158653/ |
genre |
Arctic Ocean Ocean acidification |
genre_facet |
Arctic Ocean Ocean acidification |
op_rights |
open access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 http://purl.org/coar/access_right/c_abf2 |
op_doi |
https://doi.org/10.48350/158653 |
_version_ |
1810295154398986240 |