Annales Geophysicae
Annales Geophysicae
ANGEO
Articles | Volume 37, issue 1
Articles | Volume 37, issue 1
https://doi.org/10.5194/angeo-37-1-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-37-1-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 1
Regular paper
 | 
11 Jan 2019
Regular paper |  | 11 Jan 2019

Connection between the length of day and wind measurements in the mesosphere and lower thermosphere at mid- and high latitudes

Sven Wilhelm, Gunter Stober, Vivien Matthias, Christoph Jacobi, and Damian J. Murphy

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Latest update: 03 Nov 2025
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Short summary
This study shows that the mesospheric winds are affected by an expansion–shrinking of the mesosphere and lower thermosphere that takes place due to changes in the intensity of the solar radiation, which affects the density within the atmosphere. On seasonal timescales, an increase in the neutral density occurs together with a decrease in the eastward-directed zonal wind. Further, even after removing the seasonal and the 11-year solar cycle variations, we show a connection between them.
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