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Circulation effects on nitrogen dynamics in the Ionian Sea

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Author(s) :
Civitarese G, Crise A, Crispi G, Mosetti R
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Source :
Oceanologica Acta (0399-1784) (Gauthier-Villars), 1996 , Vol. 19 , N. 6 , P. 609-622
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Keyword(s) :
Ionian Sea, nitrogen cycle, general circulation, ecomodel, primary production
Abstract :
In this work the description of the interaction between the general circulation and the nitrogen cycle in the Ionian Sea is considered. Firstly, an analysis is made of nitrate data collected during POEM-BC cruises in October 1991 and April 1992; then a numerical experiment based on a coupled hydrodynamic ecomodel is presented. The model results relative to the periods corresponding to the cruises are discussed. The ecomodel is climatological and represents an aggregated description of the nitrogen cycle in terms of inorganic nitrogen, phytoplankton and detritus. The numerical results as nitrogen distributions, fluxes and primary production are presented. A strong dependence of nitrogen distribution on circulation emerges both from the observational data and from model simulations giving similar results in the upwelling areas and in the opposite effects of cyclonic and anticyclonic gyres. On a smaller scale, the experimental data present a more energetic structure than that obtained by the climatological model, suggesting the need for future development.
How to cite this document:

Civitarese G, Crise A, Crispi G, Mosetti R (1996). Circulation effects on nitrogen dynamics in the Ionian Sea. Oceanologica Acta, 19(6), 609-622. Open Access version : http://archimer.ifremer.fr/doc/00096/20729/