Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 4
Articles | Volume 26, issue 4
https://doi.org/10.5194/acp-26-2531-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-2531-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 4
Research article
 | 
17 Feb 2026
Research article |  | 17 Feb 2026

Ground-based observations of periodic temperature fluctuations in the mesopause region with periods longer than 2 d

Christoph Kalicinsky, Robert Reisch, and Peter Knieling

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Short summary
Planetary waves are important for driving large scale circulations. We observed planetary waves in a ground-based data set spanning more than 30 years. The waves can be assigned to expected waves due to their periods. The wave activity is strongest in winter for waves with periods longer than 20 days and shows maxima around equinoxes for periods below 20 d. The long-term behaviour shows a quasi-20 year oscillation of the wave activity with respect to the magnitude of the wave amplitudes.
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