Articles | Volume 14, issue 4
Geosci. Model Dev., 14, 2221–2233, 2021
https://doi.org/10.5194/gmd-14-2221-2021
Geosci. Model Dev., 14, 2221–2233, 2021
https://doi.org/10.5194/gmd-14-2221-2021

Development and technical paper 30 Apr 2021

Development and technical paper | 30 Apr 2021

Using the Després and Lagoutière (1999) antidiffusive transport scheme: a promising and novel method against excessive vertical diffusion in chemistry-transport models

Sylvain Mailler et al.

Model code and software

toyCTM S. Mailler and R. Pennel https://hal.archives-ouvertes.fr/hal-02933095

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Short summary
Representing the advection of thin polluted plumes in numerical models is a challenging task since these models usually tend to excessively diffuse these plumes in the vertical direction. This numerical diffusion process is the cause of major difficulties in representing such dense and thin polluted plumes in numerical models. We propose here, and test in an academic framework, a novel method to solve this problem through the use of an antidiffusive advection scheme in the vertical direction.