|Modelling the biogeochemical cycles in the Mediterranean Sea|
Belounis, M.; Mouchet, A.; Beckers, J.-M. (2009). Modelling the biogeochemical cycles in the Mediterranean Sea, in: ASLO Aquatic Sciences Meeting 2009: A Cruise Through Nice Waters, 25-30 January 2009, Nice, France. pp. 21
In: (2009). ASLO Aquatic Sciences Meeting 2009: A Cruise Through Nice Waters, 25-30 January 2009, Nice, France. ASLO: Texas. 320 pp., more
The Mediterranean Sea is generally regarded as the best site to understand the interactions between the climate, the biogeochemical cycles as well as the marine ecosystems (Béthoux et al., 1999), because of its short turnover time of water and zones of deep water formation. Many studies have observed physical modifications (Rother and al., 1998) as well as biological ones (Marty and Chiavérini, 2002) which could be partially explained by climatic changes (Béthoux et al., 2001). It appears hence necessary to evaluate the impact of climate anomalies on biogeochemical fluxes in the Mediterranean Sea. To this end, I am adapting the biogeochemical model of the global ocean (LOCH) developed by Mouchet et François (1996) and coupling it to the GHER 3D circulation model of the Mediterranean Sea (Beckers et al., 2002). The biogeochemical module contains 9 states variables (2 groups of phytoplankton, silicate, biogenic silica, phosphorus, alkalinity, dissolved inorganic carbon, dissolved and particulate organic matter). We run the model forced with climatological forcing in order to reproduce the seasonal distribution of the biogeochemical fluxes over the whole Mediterranean Sea. The results will be presented and discussed. We also compare the distribution of pCO2 obtained with the model to in situ pCO2 data in different sampling stations of the Mediterranean Sea (e.g Dyfamed).