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Title: Simultaneous in situ measurements of small-scale structures in neutral, plasma, and atomic oxygen densities during the WADIS sounding rocket project
Authors: Strelnikov, B.Eberhart, M.Friedrich, M.Hedin, J.Khaplanov, M.Baumgarten, G.Williams, B.P.Staszak, T.Asmus, H.Strelnikova, I.Latteck, R.Grygalashvyly, M.Lübken, F.-J.Höffner, J.Wörl, R.Gumbel, J.Löhle, S.Fasoulas, S.Rapp, M.Barjatya, A.Taylor, M.J.Pautet, P.-D.
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Issue Date: 2019
Published in: Atmospheric Chemistry and Physics Vol. 19 (2019), No. 17
Publisher: Göttingen : Copernicus GmbH
Abstract: 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. © 2019 Author(s).
Keywords: atmospheric chemistry; gravity wave; in situ measurement; mesosphere; oxygen; thermosphere; turbulence
DDC: 550
License: CC BY 4.0 Unported
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