Jump to main content
Jump to site search

Volume 165, 2013
Previous Article Next Article

Contact freezing efficiency of mineral dust aerosols studied in an electrodynamic balance: quantitative size and temperature dependence for illite particles

Author affiliations

Abstract

Contact freezing has long been discussed as a candidate for cloud ice formation at temperatures warmer than about −25 °C, but until now the molecular mechanism underlying this process has remained obscure and little quantitative information about the size and temperature dependent contact freezing properties of the various aerosol species is available. In this contribution, we present the first quantitative measurements of the freezing probability of a supercooled droplet upon a single contact with a size selected illite mineral particle. It is found that this probability is a strong function of temperature and aerosol particle size. For the particles investigated and on the minute time scale of the experiment, contact freezing indeed dominates immersion freezing for all temperatures.

Back to tab navigation

Supplementary files

Publication details

The article was received on 08 Mar 2013, accepted on 19 Mar 2013 and first published on 19 Mar 2013


Article type: Paper
DOI: 10.1039/C3FD00033H
Citation: Faraday Discuss., 2013,165, 383-390
  •   Request permissions

    Contact freezing efficiency of mineral dust aerosols studied in an electrodynamic balance: quantitative size and temperature dependence for illite particles

    N. Hoffmann, D. Duft, A. Kiselev and T. Leisner, Faraday Discuss., 2013, 165, 383
    DOI: 10.1039/C3FD00033H

Search articles by author

Spotlight

Advertisements