Estimating Oceanic Export Production based on 3D coupled physical-biogeochemical modelling


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Svetlana.Losa [ at ] awi.de

Abstract

The study addresses various aspects of model-based estimating the oceanic primary production. In particular, we consider existent interpretations of the export fluxes; influence of implied conversions between modelled chlorophyll and biomass, expressed in nitrogen and/or carbon units, and, therefore, impact of decoupling the biogeochemical (N, C) cycles and chlorophyll. The export production is estimated by simulating global ocean biolgeochemical dynamics with the CN regulated model (REcoM) developed by Schartau et al. (2007) and coupled with the MITgcm. The model describes carbon (C) and nitrogen (N) fluxes between components of the ocean ecosystem. The nitrogen and carbon cycles as well as phytoplankton chlorophyll (Chl) dynamics are decoupled in accordance with the dynamic regulatory phytoplanktonic acclimation model sugested by Geider et al. (1998). Sensitivity of the primary production estimates to biological model parameters is also discussed.



Item Type
Conference (Poster)
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Not peer-reviewed
Publication Status
Published
Event Details
The 45th International Liège Colloquium on Ocean Dynamics - The variability of primary production in the ocean: from the synoptic to the global scale, 13 May 2013 - 17 May 2013, Liège (Belgium).
Eprint ID
33032
Cite as
Loza, S. , Völker, C. , Losch, M. and Hohn, S. (2013): Estimating Oceanic Export Production based on 3D coupled physical-biogeochemical modelling , The 45th International Liège Colloquium on Ocean Dynamics - The variability of primary production in the ocean: from the synoptic to the global scale, Liège (Belgium), 13 May 2013 - 17 May 2013 .


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