Articles | Volume 8, issue 5
Development and technical paper
13 May 2015
Development and technical paper |  | 13 May 2015

Simulations and parameterisation of shallow volcanic plumes of Piton de la Fournaise, Réunion Island, using Méso-NH version 4-9-3

S. G. Sivia, F. Gheusi, C. Mari, and A. Di Muro

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Cited articles

Allard, P., La Spina, A., Tamburello, G., Aiuppa, A., Burton, M., Di Muro, A., and Staudacher, T.: First measurements of magmatic gas composition and fluxes during an eruption (October 2010) of Piton de la Fournaise hot spot volcano, La Réunion island, Geophys. Res. Abstr., EGU2011-13182, Oral Presentation, EGU General Assembly 2011, Vienna, Austria, 2011.
Bechtold, P., Bazile, E., Guichard, F., Mascart, P., and Richard, E.: A mass-flux convection scheme for regional and global models, Q. J. Roy. Meteor. Soc., 127, 869–886, 2001.
Bjornsson, H., Magnusson, S., Arason, P., and Petersen, G. N.: Assessing simple models of volcanic plumes using observations from the summit eruption of Eyjafjallajökull in 2010, American Geophysical Union, Fall Meeting, San Francisco, 2011.
Bhugwant, C., Sieja, B., Bessafi, M., Staudacher, T., and Ecormier, J.: Atmospheric sulfur dioxide measurements during the 2005 and 2007 eruptions of the Piton de La Fournaise volcano: implications for human health and environmental changes, J. Volcanol. Geoth. Res., 184, 208–224,, 2009.
Bougeault, P. and Lacarrere, P.: Parametrization of orography-induced turbulence in a meso-beta model, Mon. Weather Rev., 117, 1872–1890, 1989.
Short summary
A sub-grid shallow convection scheme is adapted such that the size and intensity of the ground heat source provided by an eruption is initialised for modelling the sub-grid updraft. This parameterisation is tested on a 1-D single column model with a 1km resolution for an eruption observed at PdF in January 2010. The modelled plume agrees well with the SO2 concentrations found with LES and the adapted scheme emphasizes the sensitivity of the parameterisation to entrainment at the plume base.