Articles | Volume 14, issue 23
https://doi.org/10.5194/acp-14-12649-2014
https://doi.org/10.5194/acp-14-12649-2014
Research article
 | 
02 Dec 2014
Research article |  | 02 Dec 2014

Tropospheric carbon monoxide over the Pacific during HIPPO: two-way coupled simulation of GEOS-Chem and its multiple nested models

Y.-Y. Yan, J.-T. Lin, Y. Kuang, D. Yang, and L. Zhang

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Short summary
Limited by coarse resolutions, global chemical transport models cannot well capture small-scale nonlinear processes. To alleviate the problem, we develop a two-way coupled system to integrate the global GEOS-Chem model and its three high-resolution nested models covering Asia, Europe and North America. Confirmed by comparisons with observations, the coupled system improves upon the global model with a 10% increase in global tropospheric CO, a 4% decrease in OH and a 4% increase in MCF lifetime.
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