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Avancées sur la modélisation des aérosols dans le modèle CHIMERE

Abstract : Ineris operates and develops the CHIMERE chemistry transport model which is now widely used throughout Europe and beyond for air quality forecasting and assessment. To maintain the model at the state of the art and improve its performances, CHIMERE needs to be regularly updated to take into account the last findings on air quality modeling. In this spirit, a new aerosol module was developed and implemented into CHIMERE. Developments include the revision the algorithms of condensation/evaporation and coagulation processes and the implementation of a new secondary organic aerosol mechanism. Concentrations of particles over Europe were simulated for the year 2013 and were compared to available PM concentrations and speciation measured at several stations in Europe. The model gives satisfactory performance in general but overestimates ammonium nitrate concentrations during late autumn (possibly due to problems in the temporal evolution of emissions) and underestimates summer organic aerosol concentrations over most of the stations (especially in northern Europe).
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Submitted on : Thursday, February 21, 2019 - 4:41:32 PM
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  • HAL Id : ineris-02044868, version 1



Florian Couvidat, Bertrand Bessagnet, Augustin Colette. Avancées sur la modélisation des aérosols dans le modèle CHIMERE. Rapport Scientifique INERIS, 2018, 2017-2018, pp.40-41. ⟨ineris-02044868⟩



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