Articles | Volume 24, issue 6
https://doi.org/10.5194/acp-24-3559-2024
https://doi.org/10.5194/acp-24-3559-2024
Research article
 | 
21 Mar 2024
Research article |  | 21 Mar 2024

Quasi-10 d wave activity in the southern high-latitude mesosphere and lower thermosphere (MLT) region and its relation to large-scale instability and gravity wave drag

Wonseok Lee, In-Sun Song, Byeong-Gwon Song, and Yong Ha Kim

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Short summary
We investigate the seasonal variation of westward-propagating quasi-10 d wave (Q10DW) activity in the southern high-latitude mesosphere. The observed Q10DW is amplified around equinoxes. The model experiments indicate that the Q10DW can be enhanced in the high-latitude mesosphere due to large-scale instability. However, an excessively strong instability in the summer mesosphere spuriously generates the Q10DW in the model, potentially leading to inaccurate model dynamics.
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