Development of an Eddy-Permitting Ocean Carbon Cycle Model based on the Southern Ocean State Estimate
Taka
Ito, Colorado State University, ito@atmos.colostate.edu
(Presenting)
We develop an eddy-permitting ocean carbon cycle model of the Southern Ocean aiming at improving the realism and quantification of the regional carbon fluxes. The unique feature of this model is the application of an eddy-permitting ocean data assimilation to the ocean ecosystem and carbon cycle simulation, providing improved representation of physical ocean circulation at the scale of ocean fronts and eddies, constrained by the suite of satellite and in-situ data. An eddy-permitting ocean general circulation model (MITgcm) is iteratively fitted to all available physical oceanographic observations through the adjoint method. The resulting, realistic ocean circulation fields are employed to drive ocean biogeochemistry and ecosystem models. We present some preliminary results focusing on the simulated variability of chlorophyll, primary and export production and the pCO2 of surface waters in the region of Drake Passage during 2005 and 2006.
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