Articles | Volume 25, issue 23
https://doi.org/10.5194/acp-25-17725-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-17725-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Dec 2025
Research article |
| 05 Dec 2025
| 05 Dec 2025
Migrating diurnal tide anomalies during QBO disruptions in 2016 and 2020: morphology and mechanism
Shuai Liu
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 101408, China
Guoying Jiang
CORRESPONDING AUTHOR
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 101408, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Danzhou, Hainan Province, China
Bingxian Luo
CORRESPONDING AUTHOR
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, 101408, China
School of Mathematics and Statistics, Henan Normal University, Xinxiang, 453007, China
Jiyao Xu
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 101408, China
Yajun Zhu
State Key Laboratory of Solar Activity and Space Weather, National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China
School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, 101408, China
Hainan National Field Science Observation and Research Observatory for Space Weather, Danzhou, Hainan Province, China
CAS Key Laboratory of Geospace Environment, Department of Geophysics and Planetary Sciences, University of Science and Technology of China, Hefei, China
CAS Center for Excellence in Comparative Planetology, Anhui Mengcheng Geophysics National Observation and Research Station, University of Science and Technology of China, Hefei, China
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Short summary
Disruptions of the Quasi-Biennial Oscillation modulate the migrating diurnal tide in the mesosphere and lower thermosphere. During the events, wavelengths and phases of the tide remain unchanged, but its amplitude strengthens. The variation of heating sources, dissipation, zonal wind latitude shear and gravity wave drag may contribute to the amplification of the tide amplitude. These features provide insight into the dynamical coupling of troposphere, stratosphere, mesosphere and lower thermosphere.
Disruptions of the Quasi-Biennial Oscillation modulate the migrating diurnal tide in the...
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