Articles | Volume 17, issue 17
Atmos. Chem. Phys., 17, 10709–10732, 2017
Atmos. Chem. Phys., 17, 10709–10732, 2017

Research article 12 Sep 2017

Research article | 12 Sep 2017

Atmospheric processes affecting the separation of volcanic ash and SO2 in volcanic eruptions: inferences from the May 2011 Grímsvötn eruption

Fred Prata et al.

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Cited articles

Ansmann, A., Seifert, P., Tesche, M., and Wandinger, U.: Profiling of fine and coarse particle mass: case studies of Saharan dust and Eyjafjallajökull/Grimsvötn volcanic plumes, Atmos. Chem. Phys., 12, 9399–9415,, 2012.
Arason, P., Petersen, G. N., and Bjornsson, H.: Observations of the altitude of the volcanic plume during the eruption of Eyjafjallajökull, April–May 2010, Earth Syst. Sci. Data, 3, 9–17,, 2011.
Bourassa, A. E., Robock, A., Randel, W. J., Deshler, T., Rieger, L. A., Lloyd, N. D., Llewellyn, E. T., and Degenstein, D. A.: Large volcanic aerosol load in the stratosphere linked to Asian monsoon transport, Science, 337, 78–81, 2012.
Brown, R., Bonadonna, C., and Durant, A.: A review of volcanic ash aggregation, Phys. Chem. Earth, 45–46, 65–78,, 2012.
Bursik, M.: Tephra dispersal, Geological Society, London, Special Publications, 145, 115–144,, 1998.
Short summary
This paper investigates the separation of gases and particles that frequently occurs during violent volcanic eruptions. This problem is important because atmospheric winds spread volcanic aerosols at great distances from the source, and wind shear then causes the aerosols to spread in different directions at different altitudes. This has important repercussions for accurately forecasting the movement of hazardous volcanic clouds. The May 2011 Grímsvötn eruption is analysed in great detail.
Final-revised paper