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| Titel |
Statistical validation of a 3-D bio-physical model of the western North Atlantic |
| VerfasserIn |
M. K. Lehmann, K. Fennel, R. He |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 6, no. 10 ; Nr. 6, no. 10 (2009-10-02), S.1961-1974 |
| Datensatznummer |
250004025
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| Publikation (Nr.) |
 copernicus.org/bg-6-1961-2009.pdf |
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| Zusammenfassung |
| High-resolution, physical-biological models of coastal and shelf
regions typically use a single functional phytoplankton group, which
limits their ability to represent ecological gradients (e.g. highly
productive shelf systems adjacent to oligotrophic regions), as these
are dominated by different functional phytoplankton groups. We
implemented a size-structured ecosystem model in a high-resolution,
regional circulation model of the northeast North American shelf and
adjacent deep ocean in order to assess whether the added functional
complexity of two functional phytoplankton groups improves the model's
ability to represent surface chlorophyll concentrations along an
ecological gradient encompassing five distinct regions. We used
satellite-derived SST and sea-surface chlorophyll for our model
assessment, as these allow investigation of spatial variability and
temporal variations from monthly to interannual, and analyzed three
complimentary statistical measures of model-data agreement: model
bias, root mean square error and model efficiency (or skill). All
three measures were integrated for the whole domain, for distinct
subregions and were calculated in a spatially explicit manner.
Comparison with a previously published simulation that used a model
with a single phytoplankton functional group indicates that the
inclusion of an additional phytoplankton group representing
picoplankton markedly improves the model's skill. |
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