Ionospheric 14.5 Day Periodic Oscillation during the 2019 Antarctic SSW Event
نویسندگان
چکیده
The International Global Navigation Satellite Systems Service (IGS) ionospheric total electron content (TEC) data are used to study the periodic perturbation in ionosphere during 2019 Antarctic sudden stratospheric warming (SSW) event, a rare Southern Hemisphere minor SSW event last 40 years. A 14.5 day signal with zonal wavenumber of 0 is observed mesosphere and lower thermosphere (MLT) region this period, which could be related lunar tide. disturbance IGS TEC exhibits local time dependence latitudinal variation, maximum amplitude appearing between 1000 1600 LT equatorial ionization anomaly (EIA) crest regions. Additionally, oscillation shows an obvious longitudinal variability, weakest 30° W–60° E.
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ژورنال
عنوان ژورنال: Atmosphere
سال: 2023
ISSN: ['2073-4433']
DOI: https://doi.org/10.3390/atmos14050796