Articles | Volume 8, issue 3
https://doi.org/10.5194/gmd-8-805-2015
https://doi.org/10.5194/gmd-8-805-2015
Model description paper
 | 
25 Mar 2015
Model description paper |  | 25 Mar 2015

A global carbon assimilation system using a modified ensemble Kalman filter

S. Zhang, X. Zheng, J. M. Chen, Z. Chen, B. Dan, X. Yi, L. Wang, and G. Wu

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Short summary
A Global Carbon Assimilation System based on the Ensemble Kalman filter (GCAS-EK) is developed for assimilating atmospheric CO2 data into an ecosystem model to simultaneously estimate the surface carbon fluxes and atmospheric CO2 distribution. This assimilation approach is similar to CarbonTracker, but with several new developments. The results showed that this assimilation approach can effectively reduce the biases and uncertainties of the carbon fluxes simulated by the ecosystem model.