A global coupled Eulerian-Lagrangian model and 1 × 1 km CO 2 surface flux dataset for high-resolution atmospheric CO 2 transport simulations

17Citations
Citations of this article
28Readers
Mendeley users who have this article in their library.

Abstract

We designed a method to simulate atmospheric CO 2 concentrations at several continuous observation sites around the globe using surface fluxes at a very high spatial resolution. The simulations presented in this study were performed using the Global Eulerian-Lagrangian Coupled Atmospheric model (GELCA), comprising a Lagrangian particle dispersion model coupled to a global atmospheric tracer transport model with prescribed global surface CO 2 flux maps at a 1 × 1 km resolution. The surface fluxes used in the simulations were prepared by assembling the individual components of terrestrial, oceanic and fossil fuel CO 2 fluxes. This experimental setup (i.e. a transport model running at a medium resolution, coupled to a high-resolution Lagrangian particle dispersion model together with global surface fluxes at a very high resolution), which was designed to represent high-frequency variations in atmospheric CO 2 concentration, has not been reported at a global scale previously. Two sensitivity experiments were performed: (a) using the global transport model without coupling to the Lagrangian dispersion model, and (b) using the coupled model with a reduced resolution of surface fluxes, in order to evaluate the performance of Eulerian-Lagrangian coupling and the role of high-resolution fluxes in simulating high-frequency variations in atmospheric CO 2 concentrations. A correlation analysis between observed and simulated atmospheric CO 2 concentrations at selected locations revealed that the inclusion of both Eulerian-Lagrangian coupling and high-resolution fluxes improves the high-frequency simulations of the model. The results highlight the potential of a coupled Eulerian-Lagrangian model in simulating high-frequency atmospheric CO 2 concentrations at many locations worldwide. The model performs well in representing observations of atmospheric CO 2 concentrations at high spatial and temporal resolutions, especially for coastal sites and sites located close to sources of large anthropogenic emissions. While this study focused on simulations of CO 2 concentrations, the model could be used for other atmospheric compounds with known estimated emissions. © Author(s) 2012.

Cite

CITATION STYLE

APA

Ganshin, A., Oda, T., Saito, M., Maksyutov, S., Valsala, V., Andres, R. J., … Zhuravlev, R. (2012). A global coupled Eulerian-Lagrangian model and 1 × 1 km CO 2 surface flux dataset for high-resolution atmospheric CO 2 transport simulations. Geoscientific Model Development, 5(1), 231–243. https://doi.org/10.5194/gmd-5-231-2012

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free