Articles | Volume 14, issue 4
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, Romain Pennel, Laurent Menut, and Mathieu Lachâtre

Model code and software

toyCTM S. Mailler and R. Pennel

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.