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
- 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.
Author details: | Hui Zhu, Yuri ShpritsORCiDGND, M. Spasojevic, Alexander DrozdovORCiDGND |
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DOI: | https://doi.org/10.1016/j.jastp.2019.105090 |
ISSN: | 1364-6826 |
ISSN: | 1879-1824 |
Title of parent work (English): | Journal of Atmospheric and Solar-Terrestrial Physics |
Publisher: | Elsevier |
Place of publishing: | Oxford |
Publication type: | Article |
Language: | English |
Year of first publication: | 2019 |
Publication year: | 2019 |
Release date: | 2020/10/27 |
Tag: | Chorus waves; Diffusion coefficients; Inner magnetosphere; Radiation belts; VERB code |
Volume: | 193 |
Number of pages: | 13 |
Funding institution: | National Science FoundationNational Science Foundation (NSF); NSFNational Science Foundation (NSF) [AGS-1203747]; NASANational Aeronautics & Space Administration (NASA) [NNX13AE34G, NNX16AF91G, NNX15AI94G]; Progress Horizon2020 grant [637302] |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Peer review: | Referiert |