Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 11, issue 11
Articles | Volume 11, issue 11
https://doi.org/10.5194/gmd-11-4489-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-11-4489-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 11, issue 11
Development and technical paper
 | 
09 Nov 2018
Development and technical paper |  | 09 Nov 2018

On the impact of recent developments of the LMDz atmospheric general circulation model on the simulation of CO2 transport

Marine Remaud, Frédéric Chevallier, Anne Cozic, Xin Lin, and Philippe Bousquet

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Short summary
We compare several versions of a global atmospheric transport model for the simulation of CO2. The representation of subgrid-scale processes modulates the interhemispheric gradient and the amplitude of the seasonal cycle in the Northern Hemisphere. It has the largest impact over Brazil. Refining the horizontal resolution improves the simulation near emission hotspots or along the coastlines. The sensitivities to the land surface model and to the increase in vertical resolution are marginal.
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