Journal cover Journal topic
Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
doi:10.5194/gmd-2016-196
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Model description paper
07 Sep 2016
Review status
A revision of this discussion paper is under review for the journal Geoscientific Model Development (GMD).
CHIMERE-2016: From urban to hemispheric chemistry-transport modeling
Sylvain Mailler1,2, Laurent Menut1, Dmitry Khvorostyanov1, Myrto Valari1, Florian Couvidat3, Guillaume Siour4, Solène Turquety1, Régis Briant1, Paolo Tuccella1, Bertrand Bessagnet3, Augustin Colette3, Laurent Létinois3, and Frédérik Meleux3 1Laboratoire de Météorologie Dynamique, Ecole Polytechnique, IPSL Research University, Ecole Normale Supérieure, Université Paris-Saclay, Sorbonne Universités, UPMC Univ. Paris 06, CNRS, Route de Saclay, 91128 Palaiseau, France
2École Nationale des Ponts et Chaussées, Marne-la-Vallée, France
3Institut National de l’Environnement Industriel et des Risques, Verneuil-en-Halatte, France
4Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA), UMR CNRS 7583, Université Paris Est Créteil et Université Paris Diderot, Institut Pierre Simon Laplace, Créteil, France
Abstract. CHIMERE is a chemistry-transport model initially designed for box-modelling of regional atmospheric composition. In the past decade, it has been converted into a 3D eulerian model that could be used at a variety of scales from local to continental domains. However, due to the model design and its historic use as a regional model, major limitations had remained, prohibiting its use at hemispheric scale, due to the coordinate system used for transport as well as to missing processes that are important in regions outside Europe. Most of these limitations have been lifted in the CHIMERE-2016 version, allowing its use in any region of the world and at any scale, from the scale of a single urban area up to hemispheric scale, including or not polar regions. Other important improvements have been brought in the treatment of the physical processes affecting aerosols and the emissions of mineral dust. From a computational point of view, the parallelization strategy of the model has also been improved in order to improve model numerical performance.

The present article describes all these changes. Scores for a model simulation over continental Europe are presented, and a simulation of the circumpolar transport of volcanic ash plume from the Puyehue volcanic eruption in June 2011 in Chile provides a test case for the new model version at hemispheric scale.


Citation: Mailler, S., Menut, L., Khvorostyanov, D., Valari, M., Couvidat, F., Siour, G., Turquety, S., Briant, R., Tuccella, P., Bessagnet, B., Colette, A., Létinois, L., and Meleux, F.: CHIMERE-2016: From urban to hemispheric chemistry-transport modeling, Geosci. Model Dev. Discuss., doi:10.5194/gmd-2016-196, in review, 2016.
Sylvain Mailler et al.
Sylvain Mailler et al.
Sylvain Mailler et al.

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Short summary
CHIMERE is a chemistry-transport model initially designed for box-modelling of regional atmospheric composition. In the recent years, CHIMERE has been extended to be able to model atmospheric composition at all scales from urban to hemispheric scale, which implied major changes on the coordinate systems as well as on physical processes. This study describes how and why these changes have been brought to the model, largely increasing the range of its possible use.
CHIMERE is a chemistry-transport model initially designed for box-modelling of regional...
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