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Understanding Radiation belt dynamics during some ‘unusual’ solar wind driving

Authors

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

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

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

Fok,  Mei-Ching
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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

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Citation

Zheng, Y., Wang, D., Drozdov, A., Fok, M.-C., Rastaetter, L. (2023): Understanding Radiation belt dynamics during some ‘unusual’ solar wind driving, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4315


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021750
Abstract
The periods of May 27 - June 5, 2017 and Oct 24 — 29, 2016 are ‘unusual’ in terms of radiation belt dynamics and their solar wind driving conditions. The first period was under the influence of a stealth CME-led geomagnetic storm and the second period was under high speed solar wind streams. Observations from Van Allen Probes show great variabilities in different electron energy channels for both periods. During the second period of Oct 24 - 29, 2016, electron fluxes are found to be near the highest upper limit among various storms during 2013–2018 (Hua, Bortnik and Ma, 2022). In this paper, we will provide solar wind sources and geomagnetic conditions for these two storm periods. In-depth analysis of modeling results utilizing radiation belt models available at the Community Coordinated Modeling Center such as VERB and CIMI will be performed. Model validation using different metrics in Zheng et al. (2019) will be carried out to gain a deeper understanding of the physical processes involved and identity potential causes of discrepancies.