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    <title>Long-term studies and variability of the mesosphere and lower thermosphere summer wind dynamics at middle and high latitudes</title>
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    <namePart>Chau, Jorge Louis</namePart>
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    <namePart>Liu, Huixin</namePart>
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  <abstract type="Summary">The mesosphere and lower thermosphere constitute a dynamic and complex system characterized by strong winds and varying temperatures. The focus of investigating long-term wind dynamics is set on the summer season, and a time series spanning 17-33 years is obtained by combining radars at middle and high latitudes. These measurements are used to investigate the long-term summer length, wind maxima, variability, and oscillations. Significant trends show an earlier onset of the mesospheric summer and changes in the wind circulation at middle latitudes.&lt;eng&gt;</abstract>
  <abstract type="Summary">Die Meso- und untere Thermosphäre bilden ein dynamisches, komplexes System mit starken Winden und wechselnden Temperaturen. Der Fokus der Untersuchung langfristiger Winddynamik liegt auf der Sommerzeit. Eine 17- bis 33-jährige Zeitreihe entsteht durch Kombination von Radarmessungen in mittleren und hohen Breitengraden. Diese Daten dienen zur Analyse der Sommerlänge, Windmaxima, Variabilität und Oszillationen. Signifikante Trends zeigen einen früheren Beginn des mesospherischen Sommers und Veränderungen in der Windzirkulation in mittleren Breitengraden.&lt;ger&gt;</abstract>
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  <note type="statement of responsibility">vorgelegt von Juliana María Jaen</note>
  <note>Enthält Zeitschriftenartikel</note>
  <note>GutachterInnen: Jorge Luis Chau (Leibniz Institute of Armospheric Physics at the University of Rostock) ; Huixin Liu (Department of Earth and Planetary Science, Kyushu University) ; Christian von Savigny (Institute of Physics, University of Greifswald)</note>
  <note type="thesis">Dissertation Universität Rostock 2024 Kumulative Dissertation</note>
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      <title>Long-term studies and variability of the mesosphere and lower thermosphere summer wind dynamics at middle and high latitudes</title>
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      <publisher>Rostock : Universität Rostock, 2024</publisher>
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      <namePart>Jaen, Juliana María, 1984 - </namePart>
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