A detectable change in the air-sea CO2 flux estimate from sailboat measurements
The sailboat Seaexplorer collected underway sea surface partial pressure of CO2 (pCO2) data for 129 days (2018–2021), including an Antarctic circumnavigation. By comparing ensembles of data-driven air-sea CO2 fluxes computed with and without sailboat data and applying a detection algorithm, we show...
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Nature Research
2024
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ftoceanrep:oai:oceanrep.geomar.de:60042 2024-04-28T08:01:04+00:00 A detectable change in the air-sea CO2 flux estimate from sailboat measurements Behncke, Jacqueline Landschützer, Peter Tanhua, Toste 2024-02-09 text https://oceanrep.geomar.de/id/eprint/60042/ https://oceanrep.geomar.de/id/eprint/60042/1/s41598-024-53159-0.pdf https://www.nature.com/articles/s41598-024-53159-0 https://doi.org/10.1038/s41598-024-53159-0 en eng Nature Research https://oceanrep.geomar.de/id/eprint/60042/1/s41598-024-53159-0.pdf Behncke, J., Landschützer, P. and Tanhua, T. (2024) A detectable change in the air-sea CO2 flux estimate from sailboat measurements. Open Access Scientific Reports, 14 (1). Art.Nr. 3345. DOI 10.1038/s41598-024-53159-0 <https://doi.org/10.1038/s41598-024-53159-0>. doi:10.1038/s41598-024-53159-0 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2024 ftoceanrep https://doi.org/10.1038/s41598-024-53159-0 2024-04-10T00:05:17Z The sailboat Seaexplorer collected underway sea surface partial pressure of CO2 (pCO2) data for 129 days (2018–2021), including an Antarctic circumnavigation. By comparing ensembles of data-driven air-sea CO2 fluxes computed with and without sailboat data and applying a detection algorithm, we show that these sailboat observations significantly increase the regional carbon uptake in the North Atlantic and decrease it in the Southern Ocean. While compensating changes in both basins limit the global effect, the Southern Ocean–particularly frontal regions (40°S–60°S) during summertime—exhibited the largest air-sea CO2 flux changes, averaging 20% of the regional mean. Assessing the sensitivity of the air-sea CO2 flux to measurement uncertainty, the results stay robust within the expected random measurement uncertainty (± 5 μatm) but remain undetectable with a measurement offset of 5 µatm. We thus conclude that sailboats fill essential measurement gaps in remote ocean regions. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Scientific Reports 14 1 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
The sailboat Seaexplorer collected underway sea surface partial pressure of CO2 (pCO2) data for 129 days (2018–2021), including an Antarctic circumnavigation. By comparing ensembles of data-driven air-sea CO2 fluxes computed with and without sailboat data and applying a detection algorithm, we show that these sailboat observations significantly increase the regional carbon uptake in the North Atlantic and decrease it in the Southern Ocean. While compensating changes in both basins limit the global effect, the Southern Ocean–particularly frontal regions (40°S–60°S) during summertime—exhibited the largest air-sea CO2 flux changes, averaging 20% of the regional mean. Assessing the sensitivity of the air-sea CO2 flux to measurement uncertainty, the results stay robust within the expected random measurement uncertainty (± 5 μatm) but remain undetectable with a measurement offset of 5 µatm. We thus conclude that sailboats fill essential measurement gaps in remote ocean regions. |
format |
Article in Journal/Newspaper |
author |
Behncke, Jacqueline Landschützer, Peter Tanhua, Toste |
spellingShingle |
Behncke, Jacqueline Landschützer, Peter Tanhua, Toste A detectable change in the air-sea CO2 flux estimate from sailboat measurements |
author_facet |
Behncke, Jacqueline Landschützer, Peter Tanhua, Toste |
author_sort |
Behncke, Jacqueline |
title |
A detectable change in the air-sea CO2 flux estimate from sailboat measurements |
title_short |
A detectable change in the air-sea CO2 flux estimate from sailboat measurements |
title_full |
A detectable change in the air-sea CO2 flux estimate from sailboat measurements |
title_fullStr |
A detectable change in the air-sea CO2 flux estimate from sailboat measurements |
title_full_unstemmed |
A detectable change in the air-sea CO2 flux estimate from sailboat measurements |
title_sort |
detectable change in the air-sea co2 flux estimate from sailboat measurements |
publisher |
Nature Research |
publishDate |
2024 |
url |
https://oceanrep.geomar.de/id/eprint/60042/ https://oceanrep.geomar.de/id/eprint/60042/1/s41598-024-53159-0.pdf https://www.nature.com/articles/s41598-024-53159-0 https://doi.org/10.1038/s41598-024-53159-0 |
genre |
Antarc* Antarctic North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/60042/1/s41598-024-53159-0.pdf Behncke, J., Landschützer, P. and Tanhua, T. (2024) A detectable change in the air-sea CO2 flux estimate from sailboat measurements. Open Access Scientific Reports, 14 (1). Art.Nr. 3345. DOI 10.1038/s41598-024-53159-0 <https://doi.org/10.1038/s41598-024-53159-0>. doi:10.1038/s41598-024-53159-0 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41598-024-53159-0 |
container_title |
Scientific Reports |
container_volume |
14 |
container_issue |
1 |
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1797572990407278592 |