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Simultaneous in situ measurements of small-scale structures in neutral, plasma, and atomic oxygen densities during the WADIS sounding rocket project
Stockholm University, Faculty of Science, Department of Meteorology .ORCID iD: 0000-0001-5338-1538
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Number of Authors: 222019 (English)In: Atmospheric Chemistry And Physics, ISSN 1680-7316, E-ISSN 1680-7324, Vol. 19, no 17, p. 11443-11460Article in journal (Refereed) Published
Abstract [en]

In this paper we present an overview of measurements conducted during the WADIS-2 rocket campaign. We investigate the effect of small-scale processes like gravity waves and turbulence on the distribution of atomic oxygen and other species in the mesosphere-lower thermosphere (MLT) region. Our analysis suggests that density fluctuations of atomic oxygen are coupled to fluctuations of other constituents, i.e., plasma and neutrals. Our measurements show that all measured quantities, including winds, densities, and temperatures, reveal signatures of both waves and turbulence. We show observations of gravity wave saturation and breakdown together with simultaneous measurements of generated turbulence. Atomic oxygen inside turbulence layers shows two different spectral behaviors, which might imply a change in its diffusion properties.

Place, publisher, year, edition, pages
2019. Vol. 19, no 17, p. 11443-11460
National Category
Meteorology and Atmospheric Sciences
Identifiers
URN: urn:nbn:se:su:diva-174851DOI: 10.5194/acp-19-11443-2019ISI: 000485711300001OAI: oai:DiVA.org:su-174851DiVA, id: diva2:1361147
Available from: 2019-10-15 Created: 2019-10-15 Last updated: 2020-03-05Bibliographically approved

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