On the Energy‐Dependent Deep (L < 3.5) Penetration of Radiation Belt Electrons

Mei, Yang; Li, Xinlin; Zhao, Hong; Sarris, Theodore; Khoo, Lengying; Hogan, Benjamin; O’Brien, Declan; Califf, Sam

doi:10.1029/2022gl101921

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On the Energy‐Dependent Deep (L < 3.5) Penetration of Radiation Belt Electrons

2023
By Mei, Yang ; Li, Xinlin ; Zhao, Hong ; ...
Source: Geophysical Research Letters, 50(10)

[PDF-1.80 MB]

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Details:

Journal Title:

Geophysical Research Letters
Personal Author:

Mei, Yang ; Li, Xinlin ; Zhao, Hong ; Sarris, Theodore ; Khoo, Lengying ; ... More +

Mei, Yang ; Li, Xinlin ; Zhao, Hong ; Sarris, Theodore ; Khoo, Lengying ; Hogan, Benjamin ; O’Brien, Declan ; Califf, Sam Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; NCEI (National Centers for Environmental Information)

NESDIS (National Environmental Satellite, Data, and Information Service) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; NCEI (National Centers for Environmental Information) Less -
Description:

Deep penetration of outer radiation belt electrons to low L (<3.5) has long been recognized as an energy-dependent phenomenon but with limited understanding. The Van Allen Probes measurements have clearly shown energy-dependent electron penetration during geomagnetically active times, with lower energy electrons penetrating to lower L. This study aims to improve our ability to model this phenomenon by quantitatively considering radial transport due to large-scale azimuthal electric fields ( E-fields) as an energy-dependent convection term added to a radial diffusion Fokker-Planck equation. We use a modified Volland-Stern model to represent the enhanced convection field at lower L to match the observations of storm
Keywords:

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General Earth And Planetary Sciences Geophysics
Source:

Geophysical Research Letters, 50(10)
DOI:

https://doi.org/10.1029/2022gl101921
ISSN:

0094-8276;1944-8007;
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PDF
Publisher:

American Geophysical Union (AGU)
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Journal Article
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https://creativecommons.org/licenses/by/4.0/
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CC BY
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urn:sha256:d23480dca33d273753dc06dfebd0351b784dc203e3d26dd7be4e61b60296dc3f
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https://repository.library.noaa.gov/view/noaa/54074/noaa_54074_DS1.pdf
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