A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations
Abstract Based on electron density observations between September 2012 and July 2019 from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on board the Van Allen Probes (VAPs) spacecraft, this paper makes a statistical investigation on the distribution of inner magne...
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| Format: | Article |
| Language: | English |
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Wiley
2022-10-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2022SW003182 |
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| author | Jing‐Tian Lv Xiao‐Xin Zhang Fei He Rui‐Lin Lin |
| author_facet | Jing‐Tian Lv Xiao‐Xin Zhang Fei He Rui‐Lin Lin |
| author_sort | Jing‐Tian Lv |
| collection | DOAJ |
| description | Abstract Based on electron density observations between September 2012 and July 2019 from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on board the Van Allen Probes (VAPs) spacecraft, this paper makes a statistical investigation on the distribution of inner magnetospheric electron density in the magnetic equatorial plane (MEP) under different Kp levels, and further develops a new model of inner magnetospheric electron density in the MEP with multi‐parameters (Kp, SYM‐H, Pdyn, F10.7). The statistical results show that the plasmaspheric electron density in the inner magnetosphere in the MEP has an obvious Magnetic Local Time (MLT) distribution characteristic. With the increase of Kp index, the asymmetrical distribution of plasmaspheric electron density in the MEP increases, reaching the maximum value of erosion at MLT = 02:00, and the erosion at MLT = 14:00 is much less than that at MLT = 02:00. The distribution of plasmaspheric electron density in the low L‐value (L is shell parameter) region (L ≤ 2.8) is less affected by the geomagnetic activity than that in the high L‐value region (L ≥ 3.6). Comparison between the model outputs and the VAP's observations indicates that this statistical model could accurately describe the dynamic distribution characteristics of plasmaspheric electron density in the MEP during geomagnetic storms, such as erosion and refilling, and can be applied to space weather forecast. |
| format | Article |
| id | doaj-art-9c24f336cec54b32829c04667ce012b6 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2022-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-9c24f336cec54b32829c04667ce012b62025-01-14T16:30:48ZengWileySpace Weather1542-73902022-10-012010n/an/a10.1029/2022SW003182A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes ObservationsJing‐Tian Lv0Xiao‐Xin Zhang1Fei He2Rui‐Lin Lin3Nanjing University of Information Science & Technology Nanjing ChinaKey Laboratory of Space Weather National Satellite Meteorological Center (National Center for Space Weather) China Meteorological Administration Beijing ChinaKey Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences Beijing ChinaNational Space Science Center Chinese Academy of Sciences Beijing ChinaAbstract Based on electron density observations between September 2012 and July 2019 from the Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) on board the Van Allen Probes (VAPs) spacecraft, this paper makes a statistical investigation on the distribution of inner magnetospheric electron density in the magnetic equatorial plane (MEP) under different Kp levels, and further develops a new model of inner magnetospheric electron density in the MEP with multi‐parameters (Kp, SYM‐H, Pdyn, F10.7). The statistical results show that the plasmaspheric electron density in the inner magnetosphere in the MEP has an obvious Magnetic Local Time (MLT) distribution characteristic. With the increase of Kp index, the asymmetrical distribution of plasmaspheric electron density in the MEP increases, reaching the maximum value of erosion at MLT = 02:00, and the erosion at MLT = 14:00 is much less than that at MLT = 02:00. The distribution of plasmaspheric electron density in the low L‐value (L is shell parameter) region (L ≤ 2.8) is less affected by the geomagnetic activity than that in the high L‐value region (L ≥ 3.6). Comparison between the model outputs and the VAP's observations indicates that this statistical model could accurately describe the dynamic distribution characteristics of plasmaspheric electron density in the MEP during geomagnetic storms, such as erosion and refilling, and can be applied to space weather forecast.https://doi.org/10.1029/2022SW003182plasmaspherethe Van Allen Probesplasmaspheric electron densitystatistical modeldynamic distribution |
| spellingShingle | Jing‐Tian Lv Xiao‐Xin Zhang Fei He Rui‐Lin Lin A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations Space Weather plasmasphere the Van Allen Probes plasmaspheric electron density statistical model dynamic distribution |
| title | A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations |
| title_full | A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations |
| title_fullStr | A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations |
| title_full_unstemmed | A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations |
| title_short | A Statistical Model of Inner Magnetospheric Electron Density: Van Allen Probes Observations |
| title_sort | statistical model of inner magnetospheric electron density van allen probes observations |
| topic | plasmasphere the Van Allen Probes plasmaspheric electron density statistical model dynamic distribution |
| url | https://doi.org/10.1029/2022SW003182 |
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