Articles | Volume 24, issue 10
https://doi.org/10.5194/acp-24-5837-2024
© Author(s) 2024. 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-24-5837-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Influences of sudden stratospheric warmings on the ionosphere above Okinawa
Klemens Hocke
CORRESPONDING AUTHOR
Institute of Applied Physics, University of Bern, 3012 Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, 3012 Bern, Switzerland
Wenyue Wang
Institute of Applied Physics, University of Bern, 3012 Bern, Switzerland
Oeschger Centre for Climate Change Research, University of Bern, 3012 Bern, Switzerland
Guanyi Ma
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China
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Short summary
We find a sudden stratospheric warming (SSW) effect in the F2 critical frequency (foF2) series for Okinawa. Across 29 SSW events, the amplitude of the semidiurnal cycle of foF2 peaks at the SSW onset in the SSW years. In these years, we find, for the first time, a lunar terdiurnal component with a relative amplitude of about 5 %, and lunar diurnal and semidiurnal components have relative amplitudes of about 10 %. The periods of lunar ionospheric tidal variations align with those of ocean tides.
We find a sudden stratospheric warming (SSW) effect in the F2 critical frequency (foF2) series...
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