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Charged meteoric particles as ice nuclei in the mesosphere. Part 2: A feasibility study
Stockholm University, Faculty of Science, Department of Meteorology .
Stockholm University, Faculty of Science, Department of Meteorology .
2009 (English)In: Journal of Atmospheric and Solar-Terrestrial Physics, ISSN 1364-6826, E-ISSN 1879-1824, Vol. 71, no 12, 1236-1244 p.Article in journal (Refereed) Published
Abstract [en]

Recondensed meteoric material, so-called meteoric smoke, has long been considered the main candidate for condensation nuclei for mesospheric ice formation. Recently however, model studies have shown that meteoric smoke particles are transported away from the polar region, where ice phenomena such as noctilucent clouds occur, before they can grow large enough to serve as ice condensation nuclei. In the accompanying paper it is argued that charging of the meteoric smoke particles may solve this dilemma by significantly altering the efficiency of the particles as condensation nuclei. In the present paper, the feasibility of this idea is investigated more quantitatively, by analysing the time scales of processes such as charging, recombination, and particle growth. Despite large uncertainties, especially in the charging efficiency of the smallest smoke particles, we show that reasonable assumptions yield number densities of charged condensation nuclei that are consistent with what is expected for mesospheric ice phenomena.

Place, publisher, year, edition, pages
2009. Vol. 71, no 12, 1236-1244 p.
Keyword [en]
Mesosphere, Meteoric smoke, Charging processes, NLC ice nucleation
National Category
Meteorology and Atmospheric Sciences
Research subject
Atmospheric Sciences
Identifiers
URN: urn:nbn:se:su:diva-35761DOI: 10.1016/j.jastp.2009.05.002ISI: 000268905500004OAI: oai:DiVA.org:su-35761DiVA: diva2:287955
Available from: 2010-01-20 Created: 2010-01-20 Last updated: 2017-12-12Bibliographically approved

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Gumbel, Jörg
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