Articles | Volume 16
https://doi.org/10.5194/ars-16-141-2018
https://doi.org/10.5194/ars-16-141-2018
04 Sep 2018
 | 04 Sep 2018

Forcing mechanisms of the 6 h tide in the mesosphere/lower thermosphere

Christoph Jacobi, Christoph Geißler, Friederike Lilienthal, and Amelie Krug

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Latest update: 23 Sep 2023
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Short summary
The possible sources of the quarterdiurnal tide (QDT) in the middle atmosphere are still under discussion. Therefore, meteor radar winds were analyzed with respect to non-linear interaction, which probably plays a role in winter, but to a lesser degree in summer. Numerical model experiments lead to the conclusion that, although non-linear tidal interaction is indeed one source of the QDT, the major source is direct solar forcing of the 6-hr tidal components.