Using the Després and Lagoutière (1999) antidiffusive transport scheme: a promising and novel method against excessive vertical diffusion in chemistry-transport models
<p>The potential of the antidiffusive transport scheme proposed by <span class="cit" id="xref_text.1"><a href="#bib1.bibx6">Després and Lagoutière</a> (<a href="#bib1.bibx6">1999</a>)</span> for resolving vertical tran...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2021-04-01
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| Series: | Geoscientific Model Development |
| Online Access: | https://gmd.copernicus.org/articles/14/2221/2021/gmd-14-2221-2021.pdf |
| Summary: | <p>The potential of the antidiffusive transport scheme proposed by
<span class="cit" id="xref_text.1"><a href="#bib1.bibx6">Després and Lagoutière</a> (<a href="#bib1.bibx6">1999</a>)</span> 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
<span class="cit" id="xref_text.2"><a href="#bib1.bibx6">Després and Lagoutière</a> (<a href="#bib1.bibx6">1999</a>)</span> scheme reduces numerical diffusion and improves accuracy
in idealized cases that are typical of atmospheric transport of tracers in
chemistry-transport models. The increase in accuracy and the reduction in
diffusion are substantial 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.</p> |
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| ISSN: | 1991-959X 1991-9603 |