Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic
A means of assimilating simulated satellite ocean color data with a coupled physical-biological model of the North Atlantic Ocean is implemented, allowing the relative sensitivities of different biological parameters to those data to be investigated. The model consists of an eddy-permitting general...
Published in: | Journal of Marine Research |
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Language: | English |
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Sears Foundation of Marine Research
1999
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Online Access: | https://oceanrep.geomar.de/id/eprint/8059/ https://oceanrep.geomar.de/id/eprint/8059/1/s3.pdf https://doi.org/10.1357/002224099321549611 |
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ftoceanrep:oai:oceanrep.geomar.de:8059 2023-05-15T17:28:42+02:00 Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic Gunson, J. Oschlies, Andreas Garcon, V. 1999 text https://oceanrep.geomar.de/id/eprint/8059/ https://oceanrep.geomar.de/id/eprint/8059/1/s3.pdf https://doi.org/10.1357/002224099321549611 en eng Sears Foundation of Marine Research https://oceanrep.geomar.de/id/eprint/8059/1/s3.pdf Gunson, J., Oschlies, A. and Garcon, V. (1999) Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic. Open Access Journal of Marine Research, 57 . pp. 613-639. DOI 10.1357/002224099321549611 <https://doi.org/10.1357/002224099321549611>. doi:10.1357/002224099321549611 info:eu-repo/semantics/openAccess Article PeerReviewed 1999 ftoceanrep https://doi.org/10.1357/002224099321549611 2023-04-07T14:56:00Z A means of assimilating simulated satellite ocean color data with a coupled physical-biological model of the North Atlantic Ocean is implemented, allowing the relative sensitivities of different biological parameters to those data to be investigated. The model consists of an eddy-permitting general circulation model derived from the WOCE Community Modeling Effort and a nitrogen-based, four-compartment NPZD marine ecosystem model. Many of the parameters in marine ecosystem models are poorly known and via assimilation, we hope to better constrain their values. The control parameters chosen for the variational assimilation are the model parameters involved in parameterizations of recycling as these are the most poorly known. Simulated observations are taken while following several floats seeded in varying dynamical biogeochemical provinces of the North Atlantic model domain over a six-month period. Twin experimental results show that, for the given functional forms of growth, mortality and grazing, the following parameters can be successfully recovered from simulated satellite ocean color data: nitrate and detrital recycling parameters in the trade wind domain, zooplankton parameters at higher latitudes (westerly wind and polar domains), and the phytoplankton mortality rate in all regions. By simultaneously assimilating ocean color data in different biological provinces, it becomes possible to successfully constrain all ecosystem parameters at once. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Journal of Marine Research 57 4 613 639 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
A means of assimilating simulated satellite ocean color data with a coupled physical-biological model of the North Atlantic Ocean is implemented, allowing the relative sensitivities of different biological parameters to those data to be investigated. The model consists of an eddy-permitting general circulation model derived from the WOCE Community Modeling Effort and a nitrogen-based, four-compartment NPZD marine ecosystem model. Many of the parameters in marine ecosystem models are poorly known and via assimilation, we hope to better constrain their values. The control parameters chosen for the variational assimilation are the model parameters involved in parameterizations of recycling as these are the most poorly known. Simulated observations are taken while following several floats seeded in varying dynamical biogeochemical provinces of the North Atlantic model domain over a six-month period. Twin experimental results show that, for the given functional forms of growth, mortality and grazing, the following parameters can be successfully recovered from simulated satellite ocean color data: nitrate and detrital recycling parameters in the trade wind domain, zooplankton parameters at higher latitudes (westerly wind and polar domains), and the phytoplankton mortality rate in all regions. By simultaneously assimilating ocean color data in different biological provinces, it becomes possible to successfully constrain all ecosystem parameters at once. |
format |
Article in Journal/Newspaper |
author |
Gunson, J. Oschlies, Andreas Garcon, V. |
spellingShingle |
Gunson, J. Oschlies, Andreas Garcon, V. Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic |
author_facet |
Gunson, J. Oschlies, Andreas Garcon, V. |
author_sort |
Gunson, J. |
title |
Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic |
title_short |
Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic |
title_full |
Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic |
title_fullStr |
Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic |
title_full_unstemmed |
Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic |
title_sort |
sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the north atlantic |
publisher |
Sears Foundation of Marine Research |
publishDate |
1999 |
url |
https://oceanrep.geomar.de/id/eprint/8059/ https://oceanrep.geomar.de/id/eprint/8059/1/s3.pdf https://doi.org/10.1357/002224099321549611 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/8059/1/s3.pdf Gunson, J., Oschlies, A. and Garcon, V. (1999) Sensitivity of ecosystem parameters to simulated satellite ocean colour data using a coupled physical-biological model of the North Atlantic. Open Access Journal of Marine Research, 57 . pp. 613-639. DOI 10.1357/002224099321549611 <https://doi.org/10.1357/002224099321549611>. doi:10.1357/002224099321549611 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1357/002224099321549611 |
container_title |
Journal of Marine Research |
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57 |
container_issue |
4 |
container_start_page |
613 |
op_container_end_page |
639 |
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1766121550224818176 |