A size-composition resolved aerosol model for simulating the dynamics of externally mixed particles: SCRAM (v 1.0)

S. Zhu 1 K. N. Sartelet 2 C. Seigneur 2
1 Physics Division, Argonne National Laboratory
2 CEREA - Centre d'Enseignement et de Recherche en Environnement Atmosphérique
Abstract : The Size-Composition Resolved Aerosol Model (SCRAM) for simulating the dynamics of externally mixed atmospheric particles is presented. This new model classifies aerosols by both composition and size, based on a comprehensive combination of all chemical species and their mass-fraction sections. All three main processes involved in aerosol dynamics (coagulation, condensation/evaporation and nucleation) are included. The model is first validated by comparison with a reference solution and with results of simulations using internally mixed particles. The degree of mixing of particles is investigated in a box model simulation using data representative of air pollution in Greater Paris. The relative influence on the mixing state of the different aerosol processes (condensation/evaporation, coagulation) and of the algorithm used to model condensation/evaporation (bulk equilibrium, dynamic) is studied. © 2015 Author(s).
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Geoscientific Model Development, European Geosciences Union, 2015, 8 (6), pp.1595-1612. 〈10.5194/gmd-8-1595-2015〉
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https://hal-enpc.archives-ouvertes.fr/hal-01238313
Contributeur : Frédérique Bordignon <>
Soumis le : vendredi 4 décembre 2015 - 16:34:40
Dernière modification le : mardi 6 mars 2018 - 15:56:41

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S. Zhu, K. N. Sartelet, C. Seigneur. A size-composition resolved aerosol model for simulating the dynamics of externally mixed particles: SCRAM (v 1.0). Geoscientific Model Development, European Geosciences Union, 2015, 8 (6), pp.1595-1612. 〈10.5194/gmd-8-1595-2015〉. 〈hal-01238313〉

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