Articles | Volume 15, issue 20
Atmos. Chem. Phys., 15, 11593–11627, 2015
https://doi.org/10.5194/acp-15-11593-2015
Atmos. Chem. Phys., 15, 11593–11627, 2015
https://doi.org/10.5194/acp-15-11593-2015

Research article 21 Oct 2015

Research article | 21 Oct 2015

Predicting the mineral composition of dust aerosols – Part 1: Representing key processes

J. P. Perlwitz et al.

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Subject: Aerosols | Research Activity: Atmospheric Modelling | Altitude Range: Troposphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Alastuey, A., Querol, X., Castillo, S., Escudero, M., Avila, A., Cuevas, E., Torres, C., Romero, P.-M., Exposito, F., Garc\'ia, O., Diaz, J. P., Van Dingenen, R., and Putaud, J. P.: Characterisation of TSP and PM2.5 at Izaña and Sta. Cruz de Tenerife (Canary Islands, Spain) during a Saharan Dust Episode (July 2002), Atmos. Environ., 39, 4715–4728, https://doi.org/10.1016/j.atmosenv.2005.04.018, 2005.
Albani, S., Mahowald, N. M., Perry, A. T., Scanza, R. A., Zender, C. S., Heavens, N. G., Maggi, V., Kok, J. F., and Otto-Bliesner, B. L.: Improved dust representation in the Community Atmosphere Model, J. Adv. Model. Earth Sys., 6, 541–570, https://doi.org/10.1002/2013MS000279, 2014.
Alfaro, S. C. and Gomes, L.: Modeling mineral aerosol production by wind erosion: Emission intensities and aerosol size distributions in source areas., J. Geophys. Res., 106, 18075–18084, https://doi.org/10.1029/2000JD900339, 2001.
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Short summary
The mineral composition of dust aerosols is modeled. The mineral composition is derived by extending a method that provides the composition of wet-sieved soil to account for differences between the mineral fractions of the wet-sieved soil and the resulting aerosol concentration. An empirical constraint upon the relative emission of clay and silt is applied that further differentiates soil and aerosol mineral composition. A method is proposed for mixing minerals with iron oxide impurities.
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