Articles | Volume 10, issue 1
Geosci. Model Dev., 10, 1–18, 2017
https://doi.org/10.5194/gmd-10-1-2017
Geosci. Model Dev., 10, 1–18, 2017
https://doi.org/10.5194/gmd-10-1-2017
Development and technical paper
02 Jan 2017
Development and technical paper | 02 Jan 2017

Improving the inter-hemispheric gradient of total column atmospheric CO2 and CH4 in simulations with the ECMWF semi-Lagrangian atmospheric global model

Anna Agusti-Panareda et al.

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Short summary
This paper demonstrates how important mass fixers can be in the simulation of long-lived greenhouse gases using transport models based on the highly efficient semi-Lagrangian advection scheme. Mass fixers can have a large impact on the representation of the inter-hemispheric gradient of CO2 and CH4, a crucial feature of their distribution. This work is relevant for models simulating atmospheric composition that use semi-Lagrangian advection schemes both for climate and air quality applications.