Sensitivity of ecosystem parameters to simulated satellite ocean color data using a coupled physical-biological model of the North Atlantic
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ID: 299644
1999
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Abstract
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 nitrogenbased, 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 parameterizationsof recycling as these are the most poorly known.Simulated observations are taken while following several oats 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.
| Reference Key |
openalex_W1986258176
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|---|---|
| Authors | Jim R. Gunson, Andreas Oschlies, Véronique Garçon |
| Journal | journal of marine research |
| Year | 1999 |
| DOI |
10.1357/002224099321549611
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| URL | |
| Keywords | Keywords not found |
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