Effects of crystallographic properties on the ice nucleation properties of volcanic ash particles

Gourihar Kulkarni, Manjula Nandasiri, Alla Zelenyuk, Josef Beranek, Nitesh Madaan, Arun Devaraj, Vaithiyalingam Shutthanandan, Suntharampillai Thevuthasan, Tamas Varga

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Abstract

Specific chemical and physical properties of volcanic ash particles that could affect their ability to induce ice formation are poorly understood. In this study, the ice nucleating properties of size-selected volcanic ash and mineral dust particles in relation to their surface chemistry and crystalline structure at temperatures ranging from -30 to -38°C were investigated in deposition mode. Ice nucleation efficiency of dust particles was higher compared to ash particles at all temperature and relative humidity conditions. Particle characterization analysis shows that surface elemental composition of ash and dust particles was similar; however, the structural properties of ash samples were different.

Original languageEnglish
Pages (from-to)3048-3055
Number of pages8
JournalGeophysical Research Letters
Volume42
Issue number8
DOIs
Publication statusPublished - 28 Apr 2015

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Keywords

  • ice clouds
  • ice nucleation
  • mineral dust
  • surface analysis
  • volcanic ash

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geophysics

Cite this

Kulkarni, G., Nandasiri, M., Zelenyuk, A., Beranek, J., Madaan, N., Devaraj, A., Shutthanandan, V., Thevuthasan, S., & Varga, T. (2015). Effects of crystallographic properties on the ice nucleation properties of volcanic ash particles. Geophysical Research Letters, 42(8), 3048-3055. https://doi.org/10.1002/2015GL063270