Articles | Volume 18, issue 16
https://doi.org/10.5194/acp-18-11863-2018
https://doi.org/10.5194/acp-18-11863-2018
Research article
 | 
20 Aug 2018
Research article |  | 20 Aug 2018

Wildfires as a source of airborne mineral dust – revisiting a conceptual model using large-eddy simulation (LES)

Robert Wagner, Michael Jähn, and Kerstin Schepanski

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Cited articles

Albalasmeh, A. A., Berli, M., Shafer, D. S., and Ghezzehei, T. A.: Degradation of moist soil aggregates by rapid temperature rise under low intensity fire, Plant Soil, 362, 335–344, 2013.
Alves, C. A., Gonçalves, C., Pio, C. A., Mirante, F., Caseiro, A., Tarelho, L., Freitas, M. C., and Viegas, D. X.: Smoke emissions from biomass burning in a Mediterranean shrubland, Atmos. Environ., 44, 3024–3033, 2010.
Amiridis, V., Giannakaki, E., Balis, D. S., Gerasopoulos, E., Pytharoulis, I., Zanis, P., Kazadzis, S., Melas, D., and Zerefos, C.: Smoke injection heights from agricultural burning in Eastern Europe as seen by CALIPSO, Atmos. Chem. Phys., 10, 11567–11576, https://doi.org/10.5194/acp-10-11567-2010, 2010.
Ansmann, A., Baars, H., Tesche, M., Müller, D., Althausen, D., Engelmann, R., Pauliquevis, T., and Artaxo, P.: Dust and smoke transport from Africa to South America: Lidar profiling over Cape Verde and the Amazon rainforest, Geophys. Res. Lett., 36, L11802, https://doi.org/10.1029/2009gl037923, 2009.
Bagnold, R. A.: The pysics of Blown Sand and Desert Dunes, Methuen, London, 265 pp., 1941.
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Short summary
Wildfires can disturb the lower tropospheric wind conditions and are able to mobilize and inject mineral dust particles into the atmosphere. This study presents a conceptual model of fire-driven dust emissions using large-eddy simulations and evaluates how efficiently wildfires are able to modify the near-surface winds. The results show that typical threshold velocities necessary for dust emission are frequently exceeded and wildfires should be considered a source of airborne mineral dust.
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