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    <title>Long-term measurements of mesospheric and lower thermospheric winds using specular meteor radars</title>
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    <namePart>Wilhelm, Sven</namePart>
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    <namePart>Chau, Jorge Louis</namePart>
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    <namePart>Savigny, Christian von</namePart>
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  <abstract type="Summary">Long-term measurements of winds in the mesosphere and lower thermosphere are of fundamental importance to detect global circulation patterns and their effects on the entire atmosphere. Measurements of winds and atmospheric waves seem to depend on the used instrument and the applied method to infer a decompose of the observed time series. Furthermore, differences in the measurements occur due to the observed location, the season, and the altitude range. Aim of this thesis is a study of horizontal winds and their oscillations at the middle and polar latitudes, in view of their long-term change.&lt;eng&gt;</abstract>
  <abstract type="Summary">Langzeitmessungen von Winden in der Mesosphäre und unteren Thermosphäre sind von grundlegender Bedeutung, um globale Zirkulationsmuster und ihre Auswirkungen auf die gesamte Atmosphäre zu erfassen. Diese Messungen variieren je nach verwendetem Instrument und der angewandten Methode zur Zerlegung der beobachteten Zeitreihen. Darüber hinaus treten Unterschiede je nach Beobachtungsort, Jahreszeit und Höhenbereich auf. Ziel dieser Arbeit ist die Untersuchung horizontaler Winde und ihrer Schwingungen in mittleren und polaren Breiten im Hinblick auf ihre langfristige Veränderung.&lt;ger&gt;</abstract>
  <note type="statement of responsibility">vorgelegt von Sven Wilhelm</note>
  <note>Enthält Zeitschriftenartikel</note>
  <note>GutachterInnen: Jorge Louis Chau (Leibniz-Institut für Atmosphärenphysik an der Universität Rostock) ; Christian von Savigny (Universität Greifswald)</note>
  <note type="thesis">Dissertation Universität Rostock 2019</note>
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    <titleInfo>
      <title>Long-term measurements of mesospheric and lower thermospheric winds using specular meteor radars</title>
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      <publisher>Rostock, 2019</publisher>
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    <note>Druck-Ausgabe</note>
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      <namePart>Wilhelm, Sven, 1982 - </namePart>
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