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    <title>Simultaneous in situ and ground-based common-volume measurements for the investigation of the formation mechanism of Polar Mesosphere Winter Echoes</title>
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    <namePart>Lübken, Franz-Josef</namePart>
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    <namePart>Lehmacher, Gerald</namePart>
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  <abstract type="Summary">Relatively strong radar returns from mesospheric heights (~55–85 km) in the winter polar region result from coherent structures of electrons and are called Polar Mesosphere Winter Echoes (PMWE). The formation mechanism of this phenomenon is not understood. All relevant parameters potentially involved in the PMWE formation were measured in a common volume and subsequently analyzed. The combined results of rocket-borne and ground-based measurements of two rocket flights conclusively show that coherent structures are created by a turbulent process involving tiny charged meteor smoke particles.&lt;eng&gt;</abstract>
  <abstract type="Summary">Radarrückstreusignale aus der Mesosphärenregion (~55-85 km) in polaren Breiten entstehen durch Reflexionen kohärenter Elektronenstrukturen und werden Polar Mesosphärische Winter Echos (PMWE) genannt. Erstmals wurden alle relevanten Parameter, die für den Entstehungsprozess von PMWE potentiell entscheidend sind in einem gemeinsamen Volumen mittels raketengetragenen in-situ Messungen und bodengebundenen Instrumenten untersucht. Diese Messungen geben ein einheitliches Bild: Turbulenz erzeugte in Verbindung mit geladenen Meteorstaubteilchen Strukturen, die mit dem Radar beobachtet wurden.&lt;ger&gt;</abstract>
  <note type="statement of responsibility">vorgelegt von Tristan Staszak</note>
  <note>GutachterInnen: Franz-Josef Lübken (Leibniz-Institut für Atmosphärenphysik) ; Gerald Lehmacher (Clemson University)</note>
  <note type="thesis">Dissertation Universität Rostock 2021</note>
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      <title>Simultaneous in situ and ground-based common-volume measurements for the investigation of the formation mechanism of Polar Mesosphere Winter Echoes</title>
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      <publisher>Rostock, 2021</publisher>
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      <namePart>Staszak, Tristan, 1989 - </namePart>
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