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Unraveling the intriguing interplay of solar wind and the Brazilian low-latitude ionosphere during recent solar cycles

Urheber*innen

Candido,  Claudia
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Moraes dos Santos,  Stella
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Taiwo Olusayo,  Osanyin
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Klausner,  Virginia
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Krause,  Linda
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Becker-Guedes,  Fabio
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Chingarandi,  Frank
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Olayiwola,  Afolabi
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Orduy,  Jaime
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Abaidoo,  Samuel
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Tesfu,  Tesfay
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Zitation

Candido, C., Moraes dos Santos, S., Taiwo Olusayo, O., Klausner, V., Krause, L., Becker-Guedes, F., Chingarandi, F., Olayiwola, A., Orduy, J., Abaidoo, S., Tesfu, T. (2023): Unraveling the intriguing interplay of solar wind and the Brazilian low-latitude ionosphere during recent solar cycles, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4948


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021347
Zusammenfassung
The low-latitude ionosphere exhibits high variability, particularly in the Brazilian sector. characterized by a high negative declination angle of the magnetic field; by the occurrence of the Equatorial Ionization Anomaly, EIA; and the South American Magnetic Anomaly, SAMA. Large-scale equatorial plasma irregularities, or plasma bubbles, EPBs, and ionospheric scintillation are the subject of extensive studies, as well as, Meso and Large Scale Traveling Ionospheric Disturbances, MSTIDs, and LSTIDs, respectively. Complex physics mechanisms enclosing Magnetosphere-Thermosphere- Ionosphere (MTI) coupling, and Mesosphere- Low-Thermosphere, MLT, pose many unresolved questions even after decades of studies. Special attention has been given to the influence of intense geomagnetic storms driven by Coronal Mass Ejections, CMEs, and their spurious effects on technological systems. However, in past decades, an intriguing and fascinating player was posed as the focus of the attention of the international space science community owing to the two last deep solar minima: the solar wind. The solar wind is a plasma coming from solar coronal holes which travels in interplanetary space causing geomagnetic disturbances mainly during the declining phase and minimum of the solar cycle. Our findings have shown that the low-latitude ionosphere is highly sensitive to solar wind and its variability is an exciting puzzle to be unraveled. In this work, we present our recent findings on the Brazilian low latitude ionosphere associated with fast solar wind streams in recent solar cycles, in multiple ground-and satellite-based instruments approach. We discuss the implications of these findings for space weather studies and forecasts.