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  <titleInfo>
    <title>On kilometer-scale varicose-mode flows in the polar summer mesosphere</title>
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    <namePart>Hartisch, Jennifer</namePart>
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    <namePart>Chau, Jorge Louis</namePart>
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    <namePart>Randall, Cora Einterz</namePart>
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    <dateIssued>03.09.2025</dateIssued>
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  <abstract type="Summary">The mesosphere and lower thermosphere are difficult to access due to their altitude and complex dynamics. Motivated by an observation of a varicose structure with extreme vertical wind velocities, PMSE data from MAARSY (2015–2021) were analyzed. More than 700 events were identified, and four pronounced cases were examined in detail using complementary wind, temperature, and aspect sensitivity data. The results show varicose structure as a recurrent and previously underestimated phenomenon in the polar mesosphere, with bore-like features and links to wind shear and temperature inversions.&lt;eng&gt;</abstract>
  <abstract type="Summary">Die Mesosphäre und untere Thermosphäre sind aufgrund ihrer Höhe und Dynamik schwer zugänglich. Motiviert durch die Beobachtung einer varikosen Struktur mit extremen vertikalen Windgeschwindigkeiten wurden PMSE-Daten von MAARSY (2015–2021) analysiert. Dabei wurden über 700 Ereignisse identifiziert und vier Fälle mit Wind-, Temperatur- und Aspektsensitivitätsdaten untersucht. Die Ergebnisse zeigen, dass varikose Strukturen ein wiederkehrendes und bisher unterschätztes Phänomen der polaren Mesosphäre mit boreähnlichen Merkmalen sowie Hinweisen auf Windscherung und Temperaturinversionen sind.&lt;ger&gt;</abstract>
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  <note type="statement of responsibility">vorgelegt von Jennifer Hartisch</note>
  <note>GutachterInnen: Jorge L. Chau (Leibniz-Institut für Atmosphärenphysik e.V.) ; Cora Randall (University of Colorado)</note>
  <note type="thesis">Dissertation Universität Rostock 2026</note>
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    <titleInfo>
      <title>On kilometer-scale varicose-mode flows in the polar summer mesosphere</title>
    </titleInfo>
    <originInfo>
      <publisher>Rostock : Universität Rostock, 2025</publisher>
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      <form>1 Band (verschiedene Seitenzählungen)</form>
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    <note>Druck-Ausgabe</note>
    <identifier type="local">(DE-627)1981955151</identifier>
    <name>
      <namePart>Hartisch, Jennifer, 1995 - </namePart>
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  <identifier type="doi">10.18453/rosdok_id00005756</identifier>
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