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| Titel |
Carbon and nutrient mixed layer dynamics in the Norwegian Sea |
| VerfasserIn |
H. S. Findlay, T. Tyrrell, R. G. J. Bellerby, A. Merico, I. Skjelvan |
| 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 ; 5, no. 5 ; Nr. 5, no. 5 (2008-10-15), S.1395-1410 |
| Datensatznummer |
250002835
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| Publikation (Nr.) |
 copernicus.org/bg-5-1395-2008.pdf |
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| Zusammenfassung |
| A coupled carbon-ecosystem model is compared to recent data from Ocean
Weather Station M (66° N, 02° E) and used as a tool to investigate
nutrient and carbon processes within the Norwegian Sea. Nitrate is consumed
by phytoplankton in the surface layers over the summer; however the data
show that silicate does not become rapidly limiting for diatoms, in contrast
to the model prediction and in contrast to data from other temperate
locations. The model estimates atmosphere-ocean CO2 flux to be 37 g C m−2 yr−1.
The seasonal cycle of the carbonate system at OWS M
resembles the cycles suggested by data from other high-latitude ocean
locations. The seasonal cycles of calcite saturation state and
[CO32-] are similar in the model and in data at OWS M: values
range from ~3 and ~120 μmol kg−1 respectively in
winter, to ~4 and ~170 μmol kg−1 respectively in
summer. The model and data provide further evidence (supporting previous
modelling work) that the summer is a time of high saturation state within
the annual cycle at high-latitude locations. This is also the time of year
that coccolithophore blooms occur at high latitudes. |
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