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Integrating sediment biogeochemistry into 3D oceanic models: A study of benthic-pelagic coupling in the Black Sea
Capet, A.; Meysman, Filip; Akoumianaki, I.; Soetaert, K.; Grégoire, M. (2016). Integrating sediment biogeochemistry into 3D oceanic models: A study of benthic-pelagic coupling in the Black Sea. Ocean Modelling 101: 83–100. dx.doi.org/10.1016/j.ocemod.2016.03.006
In: Ocean Modelling. Elsevier: Oxford. ISSN 1463-5003, more
Peer reviewed article  

Available in Authors 

Author keywords
    Continental shelves; Biogeochemical cycle; Numerical model; Early diagenesis; Sediment transport; 42 °N–47 °N;27 °E–34 °E

Authors  Top 
  • Capet, A., more
  • Meysman, Filip, more
  • Akoumianaki, I.
  • Soetaert, K., more
  • Grégoire, M., more

Abstract
    Three-dimensional (3D) ecosystem models of shelf environments should properly account for the biogeo- chemical cycling within the sea floor. However, a full and explicit representation of sediment biogeochem- istry into 3D ocean models is computationally demanding. Here, we describe a simplified approach to in- clude benthic processes in 3D ocean models, which includes a parameterization of the different pathways for organic matter mineralization and allows for organic matter remobilization by bottom currents and waves. This efficient approach enables decadal simulations that resolve the inertial contribution of the sea floor to the biogeochemical cycling in shelf environments. The model was implemented to analyze the benthic-pelagic coupling in the northwestern shelf of the Black Sea. Three distinct biogeochemical provinces were identified on the basis of fluxes and rates associated with benthic-pelagic coupling. Our model simulations suitably capture the seasonal variability of in situ flux data as well as their regional variation, which stresses the importance of incorporating temporally varying sediment biogeochemistry and resuspension/redeposition cycles in shelf ecosystem models.

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