Learning-based prediction of the particles catchment area of deep ocean sediment traps
The ocean biological carbon pump plays a major role in climate and biogeochemical cycles. Photosynthesis at the surface produces particles that are exported to the deep ocean by gravity. Sediment traps, which measure the deep carbon fluxes, help to quantify the carbon stored by this process. However...
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ftcopernicus:oai:publications.copernicus.org:egusphere116143 2024-09-15T18:23:33+00:00 Learning-based prediction of the particles catchment area of deep ocean sediment traps Picard, Théo Gula, Jonathan Fablet, Ronan Collin, Jeremy Mémery, Laurent 2023-12-05 application/pdf https://doi.org/10.5194/egusphere-2023-2777 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2777/ eng eng doi:10.5194/egusphere-2023-2777 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2777/ eISSN: Text 2023 ftcopernicus https://doi.org/10.5194/egusphere-2023-2777 2024-08-28T05:24:15Z The ocean biological carbon pump plays a major role in climate and biogeochemical cycles. Photosynthesis at the surface produces particles that are exported to the deep ocean by gravity. Sediment traps, which measure the deep carbon fluxes, help to quantify the carbon stored by this process. However, it is challenging to precisely identify the surface origin of particles trapped thousands of meters deep because of the influence of ocean circulation on the carbon sinking path. In this study, we conducted a series of numerical Lagrangian experiments in the Porcupine Abyssal Plain region of the North Atlantic and developed a machine learning approach to predict the surface origin of particles trapped in a deep sediment trap. Our numerical experiments support its predictive performance, and surface conditions appear to be sufficient to accurately predict the source area, suggesting a potential application with satellite data. We also identify potential factors that affect the prediction efficiency and we show that the best predictions are associated with low kinetic energy and the presence of mesoscale eddies above the trap. This new tool could provide a better link between satellite-derived sea surface observations and deep sediment trap measurements, ultimately improving our understanding of the biological carbon pump mechanism. Text North Atlantic Copernicus Publications: E-Journals |
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Copernicus Publications: E-Journals |
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English |
description |
The ocean biological carbon pump plays a major role in climate and biogeochemical cycles. Photosynthesis at the surface produces particles that are exported to the deep ocean by gravity. Sediment traps, which measure the deep carbon fluxes, help to quantify the carbon stored by this process. However, it is challenging to precisely identify the surface origin of particles trapped thousands of meters deep because of the influence of ocean circulation on the carbon sinking path. In this study, we conducted a series of numerical Lagrangian experiments in the Porcupine Abyssal Plain region of the North Atlantic and developed a machine learning approach to predict the surface origin of particles trapped in a deep sediment trap. Our numerical experiments support its predictive performance, and surface conditions appear to be sufficient to accurately predict the source area, suggesting a potential application with satellite data. We also identify potential factors that affect the prediction efficiency and we show that the best predictions are associated with low kinetic energy and the presence of mesoscale eddies above the trap. This new tool could provide a better link between satellite-derived sea surface observations and deep sediment trap measurements, ultimately improving our understanding of the biological carbon pump mechanism. |
format |
Text |
author |
Picard, Théo Gula, Jonathan Fablet, Ronan Collin, Jeremy Mémery, Laurent |
spellingShingle |
Picard, Théo Gula, Jonathan Fablet, Ronan Collin, Jeremy Mémery, Laurent Learning-based prediction of the particles catchment area of deep ocean sediment traps |
author_facet |
Picard, Théo Gula, Jonathan Fablet, Ronan Collin, Jeremy Mémery, Laurent |
author_sort |
Picard, Théo |
title |
Learning-based prediction of the particles catchment area of deep ocean sediment traps |
title_short |
Learning-based prediction of the particles catchment area of deep ocean sediment traps |
title_full |
Learning-based prediction of the particles catchment area of deep ocean sediment traps |
title_fullStr |
Learning-based prediction of the particles catchment area of deep ocean sediment traps |
title_full_unstemmed |
Learning-based prediction of the particles catchment area of deep ocean sediment traps |
title_sort |
learning-based prediction of the particles catchment area of deep ocean sediment traps |
publishDate |
2023 |
url |
https://doi.org/10.5194/egusphere-2023-2777 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2777/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
eISSN: |
op_relation |
doi:10.5194/egusphere-2023-2777 https://egusphere.copernicus.org/preprints/2023/egusphere-2023-2777/ |
op_doi |
https://doi.org/10.5194/egusphere-2023-2777 |
_version_ |
1810463772582608896 |