Skip to Main content Skip to Navigation
Journal articles

Investigation of some numerical issues in a chemistry-transport model: Gas-phase simulations

Abstract : Many numerical strategies have been specifically developed for chemistry-transport models. Since no exact solutions are available for 3-D real problems, there are only few insights to choose between alternative numerical schemes and approximations, or to estimate the performance discrepancy between two approaches. However it is possible to assess the importance of numerical approximations through the comparison of different strategies. We estimated the impact of several numerical schemes for advection, diffusion and stiff chemistry. We also addressed operator splitting with different methods and operator orders. The study is performed with a gas-phase Eulerian model from the modeling platform Polyphemus. It is applied to ozone forecasts mainly over Europe, with focus on a few key species: ozone, nitric oxide, nitrogen dioxide, sulfur dioxide and hydroxy radical. The outcome is a ranking of the most sensitive numerical choices. It stresses the prominent impact of the advection scheme and of the splitting time step.
Document type :
Journal articles
Complete list of metadata

Cited literature [47 references]  Display  Hide  Download
Contributor : Nathalie Gaudechoux Connect in order to contact the contributor
Submitted on : Monday, January 6, 2014 - 4:51:03 PM
Last modification on : Monday, October 21, 2019 - 1:06:04 PM
Long-term archiving on: : Sunday, April 6, 2014 - 10:05:34 PM


Publisher files allowed on an open archive




Vivien Mallet, Adélaïde Pourchet, Denis Quélo, Bruno Sportisse. Investigation of some numerical issues in a chemistry-transport model: Gas-phase simulations. Journal of Geophysical Research, American Geophysical Union, 2007, 112 (D15301), ⟨10.1029/2006JD008373⟩. ⟨inria-00633151⟩



Record views


Files downloads