Effects of Electric Field Methods on Modeling the Midlatitude Ionospheric Electrodynamics and Inner Magnetosphere Dynamics

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dc.contributor.ORCID0000-0002-5543-5357 (Heelis, RA)en_US
dc.contributor.authorYu, Yiqunen_US
dc.contributor.authorJordanova, Vania K.en_US
dc.contributor.authorRidley, Aaron J.en_US
dc.contributor.authorToth, Gaboren_US
dc.contributor.authorHeelis, Roderick A.en_US
dc.contributor.utdAuthorHeelis, Roderick A.en_US
dc.date.accessioned2018-09-24T15:28:15Z
dc.date.available2018-09-24T15:28:15Z
dc.date.created2017-05-22
dc.date.issued2017-05-22en_US
dc.description.abstractWe report a self-consistent electric field coupling between the midlatitude ionospheric electrodynamics and inner magnetosphere dynamics represented in a kinetic ring current model. This implementation in the model features another self-consistency in addition to its already existing self-consistent magnetic field coupling with plasma. The model is therefore named as Ring current-Atmosphere interaction Model with Self-Consistent magnetic (B) and electric (E) fields, or RAM-SCB-E. With this new model, we explore, by comparing with previously employed empirical Weimer potential, the impact of using self-consistent electric fields on the modeling of storm time global electric potential distribution, plasma sheet particle injection, and the subauroral polarization streams (SAPS) which heavily rely on the coupled interplay between the inner magnetosphere and midlatitude ionosphere. We find the following phenomena in the self-consistent model: (1) The spatially localized enhancement of electric field is produced within 2.5 < L < 4 during geomagnetic active time in the dusk-premidnight sector, with a similar dynamic penetration as found in statistical observations. (2) The electric potential contours show more substantial skewing toward the postmidnight than the Weimer potential, suggesting the resistance on the particles from directly injecting toward the low-L region. (3) The proton flux indeed indicates that the plasma sheet inner boundary at the dusk-premidnight sector is located further away from the Earth than in the Weimer potential, and a "tongue" of low-energy protons extends eastward toward the dawn, leading to the Harang reversal. (4) SAPS are reproduced in the subauroral region, and their magnitude and latitudinal width are in reasonable agreement with data.en_US
dc.description.departmentSchool of Natural Sciences and Mathematicsen_US
dc.description.sponsorshipNSFC. Grant Numbers: 41574156, 41431071; Los Alamos National Laboratory Directed Research and Development (LDRD) program. Grant Number: DE-AC52-06NA25396.en_US
dc.identifier.bibliographicCitationYu, Yiqun, Vania K. Jordanova, Aaron J. Ridley, Gabor Toth, et al. 2017. "Effects of electric field methods on modeling the midlatitude ionospheric electrodynamics and inner magnetosphere dynamics." Journal of Geophysical Research--Space Physics 122(5), doi:10.1002/2016JA023850en_US
dc.identifier.issn2169-9380en_US
dc.identifier.issue5en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/6106
dc.identifier.volume122en_US
dc.language.isoenen_US
dc.publisherAmer Geophysical Unionen_US
dc.relation.urihttp://dx.doi.org/10.1002/2016JA023850
dc.rights©2017 American Geophysical Union. All Rights Reserved.en_US
dc.sourceJournal of Geophysical Research--Space Physics
dc.subjectIonosphereen_US
dc.subjectMagnetosphereen_US
dc.subjectMagnetic stormsen_US
dc.titleEffects of Electric Field Methods on Modeling the Midlatitude Ionospheric Electrodynamics and Inner Magnetosphere Dynamicsen_US
dc.type.genrearticleen_US

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