Articles | Volume 13, issue 9
Geosci. Model Dev., 13, 3839–3862, 2020
https://doi.org/10.5194/gmd-13-3839-2020
Geosci. Model Dev., 13, 3839–3862, 2020
https://doi.org/10.5194/gmd-13-3839-2020

Model evaluation paper 31 Aug 2020

Model evaluation paper | 31 Aug 2020

Characterizing model errors in chemical transport modeling of methane: impact of model resolution in versions v9-02 of GEOS-Chem and v35j of its adjoint model

Ilya Stanevich et al.

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Latest update: 12 Apr 2021
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Short summary
Systematic errors in atmospheric models pose a challenge for inverse modeling studies of methane (CH4) emissions. We evaluated the CH4 simulation in the GEOS-Chem model at the horizontal resolutions of 4° × 5° and 2° × 2.5°. Our analysis identified resolution-dependent biases in the model, which we attributed to discrepancies between the two model resolutions in vertical transport in the troposphere and in stratosphere–troposphere exchange.