Articles | Volume 8, issue 12
Atmos. Meas. Tech., 8, 5213–5222, 2015
Atmos. Meas. Tech., 8, 5213–5222, 2015
Research article
10 Dec 2015
Research article | 10 Dec 2015

Dual-wavelength light-scattering technique for selective detection of volcanic ash particles in the presence of water droplets

Z. Jurányi et al.

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Cited articles

Beswick, K., Baumgardner, D., Gallagher, M., Volz-Thomas, A., Nedelec, P., Wang, K.-Y., and Lance, S.: The backscatter cloud probe – a compact low-profile autonomous optical spectrometer, Atmos. Meas. Tech., 7, 1443–1457,, 2014.
Binnig, J., Meyer, J., and Kasper, G.: Calibration of an optical particle counter to provide mass for well-defined particle materials, J. Aerosol Sci., 38, 325–332,, 2007.
Bohren, C. and Huffman, D.: Absorption and Scattering of Light by Small Particles, Wiley-VCH, Weinheim, Germany, 82–129, 2004.
Brabec, M., Wienhold, F. G., Luo, B. P., Vömel, H., Immler, F., Steiner, P., Hausammann, E., Weers, U., and Peter, T.: Particle backscatter and relative humidity measured across cirrus clouds and comparison with microphysical cirrus modelling, Atmos. Chem. Phys., 12, 9135–9148,, 2012.
Bukowiecki, N., Zieger, P., Weingartner, E., Jurányi, Z., Gysel, M., Neininger, B., Schneider, B., Hueglin, C., Ulrich, A., Wichser, A., Henne, S., Brunner, D., Kaegi, R., Schwikowski, M., Tobler, L., Wienhold, F. G., Engel, I., Buchmann, B., Peter, T., and Baltensperger, U.: Ground-based and airborne in-situ measurements of the Eyjafjallajökull volcanic aerosol plume in Switzerland in spring 2010, Atmos. Chem. Phys., 11, 10011–10030,, 2011.
Short summary
Volcanic eruption can be a serious security risk for airplanes. We develop a new aerosol sensor for the reliable detection of volcanic ash on airplanes. We introduce here the laboratory prototype of this instrument, which is able to distinguish between water droplets and volcanic ash particles by measuring the scattered light at two distinct wavelengths simultaneously. The different optical behaviour of volcanic ash and water at these wavelengths makes this differentiation possible.