Anthropogenic Carbon in the Arctic Ocean: Perspectives From Different Transient Tracers
In this study we investigated the physical characteristics of the Atlantic layer in the Arctic Ocean (AO) and its role in the distribution and storage of anthropogenic carbon (Cant). The novelty of this work is to use the Transit Time Distribution method (TTD) with the radionuclides 129I and 236U an...
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ftethz:oai:www.research-collection.ethz.ch:20.500.11850/651391 2024-02-11T10:00:47+01:00 Anthropogenic Carbon in the Arctic Ocean: Perspectives From Different Transient Tracers Raimondi, Lorenza id_orcid:0 000-0001-9107-7254 Wefing, Anne-Marie id_orcid:0 000-0001-6855-6062 Casacuberta, Núria id_orcid:0 000-0001-7316-1655 2024-01 application/application/pdf https://hdl.handle.net/20.500.11850/651391 https://doi.org/10.3929/ethz-b-000651391 en eng Wiley info:eu-repo/semantics/altIdentifier/doi/10.1029/2023JC019999 info:eu-repo/semantics/altIdentifier/wos/001133648500001 info:eu-repo/grantAgreement/EC/H2020/101001451 info:eu-repo/grantAgreement/SNF/PRIMA/193091 http://hdl.handle.net/20.500.11850/651391 doi:10.3929/ethz-b-000651391 info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Attribution-NonCommercial 4.0 International Journal of Geophysical Research: Oceans, 129 (1) transient tracers Arctic Ocean multi-tracer anthropogenic carbon transit time distribution info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2024 ftethz https://doi.org/20.500.11850/65139110.3929/ethz-b-00065139110.1029/2023JC019999 2024-01-22T00:53:23Z In this study we investigated the physical characteristics of the Atlantic layer in the Arctic Ocean (AO) and its role in the distribution and storage of anthropogenic carbon (Cant). The novelty of this work is to use the Transit Time Distribution method (TTD) with the radionuclides 129I and 236U and its comparison to the commonly applied gas tracers, CFC-12 and SF6. Overall, our examination of two distinct tracer pairs, along with the novel TTD method in comparison to a classical approach, revealed a notable agreement, highlighting the robustness of these Cant estimates. The TTD analysis based on radionuclides showed that whereas the Eurasian Basin has shorter transit times and is dominated by strong mixing conditions, the Amerasian Basin is characterized by longer transit times and a strong advective flow. Overall, the Cant concentrations obtained from radionuclides confirm that the distribution in the AO follows its circulation patterns, with higher concentrations in the Eurasian Basin (∼50 μmol kg−1) compared to the Amerasian one (∼36–42 μmol kg−1). An estimated partial inventory of 0.85 ± 0.17 and 1.0 ± 0.03 Pg C was assessed for 2015 from the novel application of TTD with radionuclides and gas tracers, respectively. Finally, we identified the saturation of gas tracers as a larger source of uncertainty for Cant estimation compared to the uncertainty associated to different radionuclides' input functions, thus remarking the importance of including non-saturation dependent tracers, such as radionuclides, as an additional tool to support Cant estimates in the AO. ISSN:0148-0227 ISSN:2169-9275 Article in Journal/Newspaper Arctic Arctic Ocean ETH Zürich Research Collection Arctic Arctic Ocean |
institution |
Open Polar |
collection |
ETH Zürich Research Collection |
op_collection_id |
ftethz |
language |
English |
topic |
transient tracers Arctic Ocean multi-tracer anthropogenic carbon transit time distribution |
spellingShingle |
transient tracers Arctic Ocean multi-tracer anthropogenic carbon transit time distribution Raimondi, Lorenza id_orcid:0 000-0001-9107-7254 Wefing, Anne-Marie id_orcid:0 000-0001-6855-6062 Casacuberta, Núria id_orcid:0 000-0001-7316-1655 Anthropogenic Carbon in the Arctic Ocean: Perspectives From Different Transient Tracers |
topic_facet |
transient tracers Arctic Ocean multi-tracer anthropogenic carbon transit time distribution |
description |
In this study we investigated the physical characteristics of the Atlantic layer in the Arctic Ocean (AO) and its role in the distribution and storage of anthropogenic carbon (Cant). The novelty of this work is to use the Transit Time Distribution method (TTD) with the radionuclides 129I and 236U and its comparison to the commonly applied gas tracers, CFC-12 and SF6. Overall, our examination of two distinct tracer pairs, along with the novel TTD method in comparison to a classical approach, revealed a notable agreement, highlighting the robustness of these Cant estimates. The TTD analysis based on radionuclides showed that whereas the Eurasian Basin has shorter transit times and is dominated by strong mixing conditions, the Amerasian Basin is characterized by longer transit times and a strong advective flow. Overall, the Cant concentrations obtained from radionuclides confirm that the distribution in the AO follows its circulation patterns, with higher concentrations in the Eurasian Basin (∼50 μmol kg−1) compared to the Amerasian one (∼36–42 μmol kg−1). An estimated partial inventory of 0.85 ± 0.17 and 1.0 ± 0.03 Pg C was assessed for 2015 from the novel application of TTD with radionuclides and gas tracers, respectively. Finally, we identified the saturation of gas tracers as a larger source of uncertainty for Cant estimation compared to the uncertainty associated to different radionuclides' input functions, thus remarking the importance of including non-saturation dependent tracers, such as radionuclides, as an additional tool to support Cant estimates in the AO. ISSN:0148-0227 ISSN:2169-9275 |
format |
Article in Journal/Newspaper |
author |
Raimondi, Lorenza id_orcid:0 000-0001-9107-7254 Wefing, Anne-Marie id_orcid:0 000-0001-6855-6062 Casacuberta, Núria id_orcid:0 000-0001-7316-1655 |
author_facet |
Raimondi, Lorenza id_orcid:0 000-0001-9107-7254 Wefing, Anne-Marie id_orcid:0 000-0001-6855-6062 Casacuberta, Núria id_orcid:0 000-0001-7316-1655 |
author_sort |
Raimondi, Lorenza |
title |
Anthropogenic Carbon in the Arctic Ocean: Perspectives From Different Transient Tracers |
title_short |
Anthropogenic Carbon in the Arctic Ocean: Perspectives From Different Transient Tracers |
title_full |
Anthropogenic Carbon in the Arctic Ocean: Perspectives From Different Transient Tracers |
title_fullStr |
Anthropogenic Carbon in the Arctic Ocean: Perspectives From Different Transient Tracers |
title_full_unstemmed |
Anthropogenic Carbon in the Arctic Ocean: Perspectives From Different Transient Tracers |
title_sort |
anthropogenic carbon in the arctic ocean: perspectives from different transient tracers |
publisher |
Wiley |
publishDate |
2024 |
url |
https://hdl.handle.net/20.500.11850/651391 https://doi.org/10.3929/ethz-b-000651391 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
Journal of Geophysical Research: Oceans, 129 (1) |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2023JC019999 info:eu-repo/semantics/altIdentifier/wos/001133648500001 info:eu-repo/grantAgreement/EC/H2020/101001451 info:eu-repo/grantAgreement/SNF/PRIMA/193091 http://hdl.handle.net/20.500.11850/651391 doi:10.3929/ethz-b-000651391 |
op_rights |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/4.0/ Creative Commons Attribution-NonCommercial 4.0 International |
op_doi |
https://doi.org/20.500.11850/65139110.3929/ethz-b-00065139110.1029/2023JC019999 |
_version_ |
1790596512649052160 |