Home » Zhu et al. 2019

New hiss and chorus waves diffusion coefficient parameterizations from the Van Allen Probes and their effect on long-term relativistic electron radiation-belt VERB simulations

Zhu H., Y. Y. Shprits, M. Spasojevic, A. Y. Drozdov, (2019), New hiss and chorus waves diffusion coefficient parameterizations from the Van Allen Probes and their effect on long-term relativistic electron radiation-belt VERB simulations, Journal Of Atmospheric And Solar-terrestrial Physics, 193, 105090, doi:10.1016/j.jastp.2019.105090

Abstract

New wave frequency and amplitude models for the nightside and dayside chorus waves are built based on measurements from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) instrument onboard the Van Allen Probes. The corresponding 3D diffusion coefficients are systematically obtained. Compared with previous commonly-used (typical) parameterizations, the new parameterizations result in differences in diffusion rates that depend on the energy and pitch angle. Furthermore, one-year 3D diffusive simulations are performed using the Versatile Electron Radiation Belt (VERB) code. Both typical and new wave parameterizations simulation results are in a good agreement with observations at 0.9 MeV. However, the new parameterizations for nightside chorus better reproduce the observed electron fluxes. These parameterizations will be incorporated into future modeling efforts.

Authors (sorted by name)

Drozdov Shprits Spasojevic Zhu

Journal / Conference

Journal Of Atmospheric And Solar-terrestrial Physics

Bibtex

@article{ZHU2019105090,
title = "New hiss and chorus waves diffusion coefficient parameterizations from the Van Allen Probes and their effect on long-term relativistic electron radiation-belt VERB simulations",
journal = "Journal of Atmospheric and Solar-Terrestrial Physics",
volume = "193",
pages = "105090",
year = "2019",
issn = "1364-6826",
doi = "10.1016/j.jastp.2019.105090",
url = "http://www.sciencedirect.com/science/article/pii/S1364682618304589",
author = "Hui Zhu and Yuri Y. Shprits and M. Spasojevic and Alexander Y. Drozdov",
keywords = "Inner magnetosphere, Radiation belts, Chorus waves, Diffusion coefficients, VERB code",
abstract = "New wave frequency and amplitude models for the nightside and dayside chorus waves are built based on measurements from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) instrument onboard the Van Allen Probes. The corresponding 3D diffusion coefficients are systematically obtained. Compared with previous commonly-used (typical) parameterizations, the new parameterizations result in differences in diffusion rates that depend on the energy and pitch angle. Furthermore, one-year 3D diffusive simulations are performed using the Versatile Electron Radiation Belt (VERB) code. Both typical and new wave parameterizations simulation results are in a good agreement with observations at 0.9 MeV. However, the new parameterizations for nightside chorus better reproduce the observed electron fluxes. These parameterizations will be incorporated into future modeling efforts."
}