Assimilation of Ocean-Color Plankton Functional Types to Improve Marine Ecosystem Simulations
We assimilated phytoplankton functional types (PFTs) derived from ocean color into a marine ecosystem model, to improve the simulation of biogeochemical indicators and emerging properties in a shelf sea. Error-characterized chlorophyll concentrations of four PFTs (diatoms, dinoflagellates, nanoplank...
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ftarchimer:oai:archimer.ifremer.fr:78494 2023-05-15T17:38:30+02:00 Assimilation of Ocean-Color Plankton Functional Types to Improve Marine Ecosystem Simulations Ciavatta, S. Brewin, R. J. W. Skakala, J. Polimene, L. De Mora, L. Artioli, Y. Allen, J. I. 2018-02 application/pdf https://archimer.ifremer.fr/doc/00673/78494/80766.pdf https://archimer.ifremer.fr/doc/00673/78494/80767.docx https://doi.org/10.1002/2017JC013490 https://archimer.ifremer.fr/doc/00673/78494/ eng eng Amer Geophysical Union https://archimer.ifremer.fr/doc/00673/78494/80766.pdf https://archimer.ifremer.fr/doc/00673/78494/80767.docx doi:10.1002/2017JC013490 https://archimer.ifremer.fr/doc/00673/78494/ info:eu-repo/semantics/openAccess restricted use Journal Of Geophysical Research-oceans (2169-9275) (Amer Geophysical Union), 2018-02 , Vol. 123 , N. 2 , P. 834-854 text Publication info:eu-repo/semantics/article 2018 ftarchimer https://doi.org/10.1002/2017JC013490 2021-09-23T20:36:48Z We assimilated phytoplankton functional types (PFTs) derived from ocean color into a marine ecosystem model, to improve the simulation of biogeochemical indicators and emerging properties in a shelf sea. Error-characterized chlorophyll concentrations of four PFTs (diatoms, dinoflagellates, nanoplankton, and picoplankton), as well as total chlorophyll for comparison, were assimilated into a physical-biogeochemical model of the North East Atlantic, applying a localized Ensemble Kalman filter. The reanalysis simulations spanned the years 1998-2003. The skill of the reference and reanalysis simulations in estimating ocean color and in situ biogeochemical data were compared by using robust statistics. The reanalysis outperformed both the reference and the assimilation of total chlorophyll in estimating the ocean-color PFTs (except nanoplankton), as well as the not-assimilated total chlorophyll, leading the model to simulate better the plankton community structure. Crucially, the reanalysis improved the estimates of not-assimilated in situ data of PFTs, as well as of phosphate and pCO(2), impacting the simulation of the air-sea carbon flux. However, the reanalysis increased further the model overestimation of nitrate, in spite of increases in plankton nitrate uptake. The method proposed here is easily adaptable for use with other ecosystem models that simulate PFTs, for, e.g., reanalysis of carbon fluxes in the global ocean and for operational forecasts of biogeochemical indicators in shelf-sea ecosystems. Article in Journal/Newspaper North East Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Journal of Geophysical Research: Oceans 123 2 834 854 |
institution |
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Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
We assimilated phytoplankton functional types (PFTs) derived from ocean color into a marine ecosystem model, to improve the simulation of biogeochemical indicators and emerging properties in a shelf sea. Error-characterized chlorophyll concentrations of four PFTs (diatoms, dinoflagellates, nanoplankton, and picoplankton), as well as total chlorophyll for comparison, were assimilated into a physical-biogeochemical model of the North East Atlantic, applying a localized Ensemble Kalman filter. The reanalysis simulations spanned the years 1998-2003. The skill of the reference and reanalysis simulations in estimating ocean color and in situ biogeochemical data were compared by using robust statistics. The reanalysis outperformed both the reference and the assimilation of total chlorophyll in estimating the ocean-color PFTs (except nanoplankton), as well as the not-assimilated total chlorophyll, leading the model to simulate better the plankton community structure. Crucially, the reanalysis improved the estimates of not-assimilated in situ data of PFTs, as well as of phosphate and pCO(2), impacting the simulation of the air-sea carbon flux. However, the reanalysis increased further the model overestimation of nitrate, in spite of increases in plankton nitrate uptake. The method proposed here is easily adaptable for use with other ecosystem models that simulate PFTs, for, e.g., reanalysis of carbon fluxes in the global ocean and for operational forecasts of biogeochemical indicators in shelf-sea ecosystems. |
format |
Article in Journal/Newspaper |
author |
Ciavatta, S. Brewin, R. J. W. Skakala, J. Polimene, L. De Mora, L. Artioli, Y. Allen, J. I. |
spellingShingle |
Ciavatta, S. Brewin, R. J. W. Skakala, J. Polimene, L. De Mora, L. Artioli, Y. Allen, J. I. Assimilation of Ocean-Color Plankton Functional Types to Improve Marine Ecosystem Simulations |
author_facet |
Ciavatta, S. Brewin, R. J. W. Skakala, J. Polimene, L. De Mora, L. Artioli, Y. Allen, J. I. |
author_sort |
Ciavatta, S. |
title |
Assimilation of Ocean-Color Plankton Functional Types to Improve Marine Ecosystem Simulations |
title_short |
Assimilation of Ocean-Color Plankton Functional Types to Improve Marine Ecosystem Simulations |
title_full |
Assimilation of Ocean-Color Plankton Functional Types to Improve Marine Ecosystem Simulations |
title_fullStr |
Assimilation of Ocean-Color Plankton Functional Types to Improve Marine Ecosystem Simulations |
title_full_unstemmed |
Assimilation of Ocean-Color Plankton Functional Types to Improve Marine Ecosystem Simulations |
title_sort |
assimilation of ocean-color plankton functional types to improve marine ecosystem simulations |
publisher |
Amer Geophysical Union |
publishDate |
2018 |
url |
https://archimer.ifremer.fr/doc/00673/78494/80766.pdf https://archimer.ifremer.fr/doc/00673/78494/80767.docx https://doi.org/10.1002/2017JC013490 https://archimer.ifremer.fr/doc/00673/78494/ |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Journal Of Geophysical Research-oceans (2169-9275) (Amer Geophysical Union), 2018-02 , Vol. 123 , N. 2 , P. 834-854 |
op_relation |
https://archimer.ifremer.fr/doc/00673/78494/80766.pdf https://archimer.ifremer.fr/doc/00673/78494/80767.docx doi:10.1002/2017JC013490 https://archimer.ifremer.fr/doc/00673/78494/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/2017JC013490 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
123 |
container_issue |
2 |
container_start_page |
834 |
op_container_end_page |
854 |
_version_ |
1766138981772165120 |