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A combined rocket-borne and ground-based study of the sodium layer and charged dust in the upper mesosphere
Stockholm University, Faculty of Science, Department of Meteorology .
Stockholm University, Faculty of Science, Department of Meteorology .
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2014 (English)In: Journal of Atmospheric and Solar-Terrestrial Physics, ISSN 1364-6826, E-ISSN 1879-1824, Vol. 118, 151-160 p.Article in journal (Refereed) Published
Abstract [en]

The Hotel Payload 2 rocket was launched on January 31st 2008 at 20.14 LT from the Andoya Rocket Range in northern Norway (69.31 degrees N, 16.01 degrees E). Measurements in the 75-105 km region of atomic O, negatively-charged dust, positive ions and electrons with a suite of instruments on the payload were complemented by lidar measurements of atomic Na and temperature from the nearby ALOMAR observatory. The payload passed within 2.58 km of the lidar at an altitude of 90 km. A series of coupled models is used to explore the observations, leading to two significant conclusions. First, the atomic Na layer and the vertical profiles of negatively-charged dust (assumed to be meteoric smoke particles), electrons and positive ions, can be modelled using a self-consistent meteoric input flux. Second, electronic structure calculations and Rice-Ramsperger-Kassel-Markus theory are used to show that even small Fe-Mg-silicates are able to attach electrons rapidly and form stable negatively-charged particles, compared with electron attachment to O-2 and O-3. This explains the substantial electron depletion between 80 and 90 km, where the presence of atomic O at concentrations in excess of 10(10) cm(-3) prevents the formation of stable negative ions.

Place, publisher, year, edition, pages
2014. Vol. 118, 151-160 p.
Keyword [en]
Na layer, Charged dust, Meteoric smoke, Meteoric ablation
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-107087DOI: 10.1016/j.jastp.2013.11.008ISI: 000340332900004OAI: oai:DiVA.org:su-107087DiVA: diva2:744221
Note

AuthorCount:13;

Available from: 2014-09-07 Created: 2014-09-03 Last updated: 2017-12-05Bibliographically approved

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Hedin, JonasStegman, JacekKhaplanov, MishaGumbel, Jörg
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