Articles | Volume 17, issue 11
Atmos. Chem. Phys., 17, 7175–7191, 2017
https://doi.org/10.5194/acp-17-7175-2017
Atmos. Chem. Phys., 17, 7175–7191, 2017
https://doi.org/10.5194/acp-17-7175-2017

Research article 16 Jun 2017

Research article | 16 Jun 2017

Spectral- and size-resolved mass absorption efficiency of mineral dust aerosols in the shortwave spectrum: a simulation chamber study

Lorenzo Caponi et al.

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Cited articles

Alfaro, S. C., Lafon, S., Rajot, J. L., Formenti, P., Gaudichet, A., and Maille, M.: Iron oxides and light absorption by pure desert dust: An experimental study, J. Geophys. Res.-Atmos., 109, D08208, https://doi.org/10.1029/2003JD004374, 2004.
Andreae, M. O. and Gelencsér, A.: Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols, Atmos. Chem. Phys., 6, 3131–3148, https://doi.org/10.5194/acp-6-3131-2006, 2006.
Bahadur, R., Praveen, P. S., Xu, Y., and Ramanathan, V.: Solar absorption by elemental and brown carbon determined from spectral observations, P. Natl. Acad. Sci. USA, 109, 17366–17371, 2012.
Balkanski, Y., Schulz, M., Claquin, T., and Guibert, S.: Re-evaluation of Mineral aerosol radiative forcing suggests a better agreement with satellite and AERONET data, Atmos. Chem. Phys., 7, 81–95, https://doi.org/10.5194/acp-7-81-2007, 2007.
Bédidi, A. and Cervelle B., Light scattering by spherical particles with hematite and goethitelike optical properties: Effect of water impregnation, J. Geophys. Res., 98, 11941–11952, https://doi.org/10.1029/93JB00188, 1993.
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This paper presents new laboratory measurements of the shortwave mass absorption efficiency (MAE) used by climate models for mineral dust of different origin and at different sizes. We found that small particles are more efficient, by given mass, in absorbing radiation, particularly at shorter wavelength. Because dust has high concentrations in the atmosphere, light absorption by mineral dust can be competitive to other absorbing atmospheric aerosols such as black and brown carbon.
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