scholarly journals Estimating the Impacts of Radiation Belt Electrons on Atmospheric Chemistry using FIREBIRD II and Van Allen Probes Observations

2021 ◽  
Author(s):  
K. A. Duderstadt ◽  
C.‐L. Huang ◽  
H. E. Spence ◽  
S. Smith ◽  
J. B. Blake ◽  
...  
Keyword(s):  
Atmospheric Chemistry ◽  
Radiation Belt ◽  
Van Allen Probes ◽  
Radiation Belt Electrons

Simulations of the Relativistic Radiation Belt Electrons Using the VERB-3D Code

2021 ◽  
Author(s):  
Dedong Wang ◽  
Yuri Shprits ◽  
Alexander Drozdov ◽  
Nikita Aseev ◽  
Irina Zhelavskaya ◽  
...  
Keyword(s):  
Space Weather ◽  
Radiation Belt ◽  
Model Performance ◽  
Dynamic Evolution ◽  
Relativistic Electrons ◽  
Outer Radiation Belt ◽  
Chorus Waves ◽  
Van Allen Probes ◽  
Radiation Belt Electrons ◽  
Simulation Results

<p>Using the three-dimensional Versatile Electron Radiation Belt (VERB-3D) code, we perform simulations to investigate the dynamic evolution of relativistic electrons in the Earth’s outer radiation belt. In our simulations, we use data from the Geostationary Operational Environmental Satellites (GOES) to set up the outer boundary condition, which is the only data input for simulations. The magnetopause shadowing effect is included by using last closed drift shell (LCDS), and it is shown to significantly contribute to the dropouts of relativistic electrons at high $L^*$. We validate our simulation results against measurements from Van Allen Probes. In long-term simulations, we test how the latitudinal dependence of chorus waves can affect the dynamics of the radiation belt electrons. Results show that the variability of chorus waves at high latitudes is critical for modeling of megaelectron volt (MeV) electrons. We show that, depending on the latitudinal distribution of chorus waves under different geomagnetic conditions, they cannot only produce a net acceleration but also a net loss of MeV electrons. Decrease in high‐latitude chorus waves can tip the balance between acceleration and loss toward acceleration, or alternatively, the increase in high‐latitude waves can result in a net loss of MeV electrons. Variations in high‐latitude chorus may account for some of the variability of MeV electrons. </p><p>Our simulation results for the NSF GEM Challenge Events show that the position of the plasmapause plays a significant role in the dynamic evolution of relativistic electrons. We also perform simulations for the COSPAR International Space Weather Action Team (ISWAT) Challenge for the year 2017. The COSPAR ISWAT is a global hub for collaborations addressing challenges across the field of space weather. One of the objectives of the G3-04 team “Internal Charging Effects and the Relevant Space Environment” is model performance assessment and improvement. One of the expected outputs is a more systematic assessment of model performance under different conditions. The G3-04 team proposed performing benchmarking challenge runs. We ‘fly’ a virtual satellite through our simulation results and compare the simulated differential electron fluxes at 0.9 MeV and 57.27 degrees local pitch-angle with the fluxes measured by the Van Allen Probes. In general, our simulation results show good agreement with observations. We calculated several different matrices to validate our simulation results against satellite observations.</p>

scholarly journals Intense low‐frequency chorus waves observed by Van Allen Probes: Fine structures and potential effect on radiation belt electrons

2016 ◽  
Vol 43 (3) ◽  
pp. 967-977 ◽  
Author(s):  
Zhonglei Gao ◽  
Zhenpeng Su ◽  
Hui Zhu ◽  
Fuliang Xiao ◽  
Huinan Zheng ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Low Frequency ◽  
Potential Effect ◽  
Chorus Waves ◽  
Van Allen Probes ◽  
Radiation Belt Electrons ◽  
Fine Structures

scholarly journals Van Allen Probes observations linking radiation belt electrons to chorus waves during 2014 multiple storms

2015 ◽  
Vol 120 (2) ◽  
pp. 938-948 ◽  
Author(s):  
Si Liu ◽  
Fuliang Xiao ◽  
Chang Yang ◽  
Yihua He ◽  
Qinghua Zhou ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Chorus Waves ◽  
Van Allen Probes ◽  
Radiation Belt Electrons

scholarly journals Plasmatrough exohiss waves observed by Van Allen Probes: Evidence for leakage from plasmasphere and resonant scattering of radiation belt electrons

2015 ◽  
Vol 42 (4) ◽  
pp. 1012-1019 ◽  
Author(s):  
Hui Zhu ◽  
Zhenpeng Su ◽  
Fuliang Xiao ◽  
Huinan Zheng ◽  
Yuming Wang ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Resonant Scattering ◽  
Van Allen Probes ◽  
Radiation Belt Electrons

Statistical study of the storm time radiation belt evolution during Van Allen Probes era: CME- versus CIR-driven storms

2017 ◽  
Vol 122 (8) ◽  
pp. 8327-8339 ◽  
Author(s):  
Xiao-Chen Shen ◽  
Mary K. Hudson ◽  
Allison N. Jaynes ◽  
Quanqi Shi ◽  
Anmin Tian ◽  
...  
Keyword(s):  
Radiation Belt ◽  
Statistical Study ◽  
Van Allen Probes

Effects of energy and pitch angle mixed diffusion on radiation belt electrons

2011 ◽  
Vol 73 (7-8) ◽  
pp. 785-795 ◽  
Author(s):  
Qiuhua Zheng ◽  
Mei-Ching Fok ◽  
Jay Albert ◽  
Richard B. Horne ◽  
Nigel P. Meredith
Keyword(s):  
Pitch Angle ◽  
Radiation Belt ◽  
Radiation Belt Electrons
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