Submitted as: development and technical paper 19 Nov 2020
Submitted as: development and technical paper | 19 Nov 2020
Using an antidiffusive transport scheme in the vertical direction: a promising novelty for chemistry-transport models
- 1LMD/IPSL, École Polytechnique, Institut Polytechnique de Paris, ENS, PSL Research University, Sorbonne Université, CNRS, Palaiseau France
- 2École des Ponts-ParisTech, Marne-la-Vallée, France
- 1LMD/IPSL, École Polytechnique, Institut Polytechnique de Paris, ENS, PSL Research University, Sorbonne Université, CNRS, Palaiseau France
- 2École des Ponts-ParisTech, Marne-la-Vallée, France
Abstract. The potential interest of the antidiffusive transport scheme proposed by Després et Lagoutière (1999) for resolving vertical transport in chemistry-transport models is investigated in an idealized framework with very encouraging results. We show that, compared to classical higher-order schemes, the Després et Lagoutière (1999) scheme reduces numerical diffusion and improves accuracy in idealized cases that are typical of atmospheric transport of tracers in chemistry-transport models. Increased accuracy and reduced diffusion is spectacular when, and only when vertical resolution is insufficient to properly resolve vertical gradients, which is very frequent in chemistry-transport models. Therefore, we think that this scheme is an extremely promising solution for reducing numerical diffusion in chemistry-transport models.
Sylvain Mailler et al.


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RC1: 'Review of Review of “Using an antidiffusive transport scheme in the vertical direction: a promising novelty for chemistry-transport models”', Anonymous Referee #1, 03 Dec 2020
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AC1: 'Reply on RC1', Sylvain Mailler, 12 Feb 2021
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AC1: 'Reply on RC1', Sylvain Mailler, 12 Feb 2021
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RC2: 'remarks', Anonymous Referee #2, 21 Dec 2020
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AC2: 'Reply on RC2', Sylvain Mailler, 12 Feb 2021
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AC2: 'Reply on RC2', Sylvain Mailler, 12 Feb 2021
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SC1: 'executive editor comment on gmd-2020-304', Astrid Kerkweg, 21 Dec 2020
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AC3: 'Reply on SC1', Sylvain Mailler, 12 Feb 2021
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AC3: 'Reply on SC1', Sylvain Mailler, 12 Feb 2021
Sylvain Mailler et al.
Sylvain Mailler et al.
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