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Communication Dans Un Congrès Année : 2023

Impact on Mid-Latitude Ionospheric TEC and Scintillation during 2023 Geomagnetic Storms over France region

Résumé

Understanding the geomagnetic storm effects over the mid-latitude region that transform in terms of total electron content (TEC) and ionospheric scintillations are to be investigated. This study aims to identify the trans-ionospheric propagation impacts during severe space weather conditions for the solar cycle 25. We present some of the recent case studies on the complex play of space weather impact on recorded TEC and scintillation observations over a mid-latitude station in France. Four case-studies of geomagnetic storm events from the months of February, March, and April 2023. Calibrated TEC is estimated with 1-Hz sampling rate considering the multi-constellation dual-frequency measurements for the present study. Positive, negative and no storm impacts over the region are clearly identified for the chosen case studies. A positive storm impact with severe total electron content enhancement is foreseen for the days of 25-30 February 2023. During the days of 21-26 March 2023, pre-storm TEC enhancement followed by storm-time peak TEC inhibition is observed. The clear correlation with disturbed storm time (Dst) and planetary-K (Kp) indices are also depicted for further analysis. Surprisingly, for the days of 21-26 April geomagnetic storm no significant TEC enhancements or inhibitions are foreseen. Rather, during local post-sunset hours of main phase of storm day i.e., 23 April 2023, moderate to high ionospheric amplitude scintillations were recorded.
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Dates et versions

hal-04492514 , version 1 (06-03-2024)

Identifiants

  • HAL Id : hal-04492514 , version 1

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Babu Sree Harsha Pasumarthi, I. Hinostroza, Mohammed Serhir, Stéphane Saillant. Impact on Mid-Latitude Ionospheric TEC and Scintillation during 2023 Geomagnetic Storms over France region. 19th European Space Weather Week, Nov 2023, Toulouse, France. ⟨hal-04492514⟩
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