Simulation of Nighttime Medium‐Scale Traveling Ionospheric Disturbances in the Midlatitude Ionosphere During Stormtime.
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| Title: | Simulation of Nighttime Medium‐Scale Traveling Ionospheric Disturbances in the Midlatitude Ionosphere During Stormtime. |
|---|---|
| Authors: | Wang, Xiaochuan1,2,3 (AUTHOR), Lei, Jiuhou1 (AUTHOR) leijh@ustc.edu.cn, Zhang, Shun‐Rong4 (AUTHOR), Li, Zezhong1 (AUTHOR), Dang, Tong1 (AUTHOR), Luan, Xiaoli1 (AUTHOR), Dou, Xiankang1 (AUTHOR) |
| Source: | Journal of Geophysical Research. Space Physics. Jun2024, Vol. 129 Issue 6, p1-14. 14p. |
| Subject Terms: | *Ionosphere, *Thunderstorms, *Magnetic storms, *Storms, Ionospheric disturbances, Thermosphere |
| Abstract: | The generation of medium‐scale traveling ionospheric disturbances (MSTIDs) in the mid‐latitude F region ionosphere, particularly in the presence of sporadic E (Es) layers or geomagnetically conjugate features, has been the focus of extensive investigation using both observational and numerical modeling approaches. Recent observations have revealed the occurrence of nighttime MSTIDs over the continental US during storm conditions even without invoking the Es instability. While this phenomenon is considered to be electrified and likely associated with the Perkins instability, the influences of storm‐enhanced density (SED), electric fields, and winds on the excitation of nighttime MSTIDs remain a complicated issue and require further quantitative analysis. In this study, we develop a two‐dimensional numerical model of the nighttime ionospheric electrodynamics at midlatitudes using the ionospheric ion continuity equation and the electric field Poisson equation to investigate the characteristics of MSTIDs in the SED base region during storm conditions. We demonstrate that the magnetic inclination effect can explain the lower latitude preference of the MSTIDs during magnetic storms, while the development of MSTIDs is primarily influenced by intense storm electric fields under the background ionospheric condition of large density gradients associated with SED. However, the impact of neutral winds on the MSTIDs growth varies, depending on their specific direction determined by the strongly dynamic spatiotemporal variation of the thermosphere and ionosphere during storms. Therefore, the MSTIDs stormtime scenario results from a combination of multiple important factors. Key Points: The medium‐scale traveling ionospheric disturbances (MSTIDs) evolution under stormtime electrodynamic forcing is simulated for the first timeThe effect of stormtime large horizontal density gradients associated with storm‐enhanced density (SED) is considered in two‐dimensional MSTIDs simulationsThe development of MSTIDs is primarily influenced by storm electric fields and SED‐related density gradients [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 178071375 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Simulation of Nighttime Medium‐Scale Traveling Ionospheric Disturbances in the Midlatitude Ionosphere During Stormtime. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Xiaochuan%22">Wang, Xiaochuan</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lei%2C+Jiuhou%22">Lei, Jiuhou</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> leijh@ustc.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Shun‐Rong%22">Zhang, Shun‐Rong</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Zezhong%22">Li, Zezhong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dang%2C+Tong%22">Dang, Tong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Luan%2C+Xiaoli%22">Luan, Xiaoli</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dou%2C+Xiankang%22">Dou, Xiankang</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Geophysical+Research%2E+Space+Physics%22">Journal of Geophysical Research. Space Physics</searchLink>. Jun2024, Vol. 129 Issue 6, p1-14. 14p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Ionosphere%22">Ionosphere</searchLink><br />*<searchLink fieldCode="DE" term="%22Thunderstorms%22">Thunderstorms</searchLink><br />*<searchLink fieldCode="DE" term="%22Magnetic+storms%22">Magnetic storms</searchLink><br />*<searchLink fieldCode="DE" term="%22Storms%22">Storms</searchLink><br /><searchLink fieldCode="DE" term="%22Ionospheric+disturbances%22">Ionospheric disturbances</searchLink><br /><searchLink fieldCode="DE" term="%22Thermosphere%22">Thermosphere</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The generation of medium‐scale traveling ionospheric disturbances (MSTIDs) in the mid‐latitude F region ionosphere, particularly in the presence of sporadic E (Es) layers or geomagnetically conjugate features, has been the focus of extensive investigation using both observational and numerical modeling approaches. Recent observations have revealed the occurrence of nighttime MSTIDs over the continental US during storm conditions even without invoking the Es instability. While this phenomenon is considered to be electrified and likely associated with the Perkins instability, the influences of storm‐enhanced density (SED), electric fields, and winds on the excitation of nighttime MSTIDs remain a complicated issue and require further quantitative analysis. In this study, we develop a two‐dimensional numerical model of the nighttime ionospheric electrodynamics at midlatitudes using the ionospheric ion continuity equation and the electric field Poisson equation to investigate the characteristics of MSTIDs in the SED base region during storm conditions. We demonstrate that the magnetic inclination effect can explain the lower latitude preference of the MSTIDs during magnetic storms, while the development of MSTIDs is primarily influenced by intense storm electric fields under the background ionospheric condition of large density gradients associated with SED. However, the impact of neutral winds on the MSTIDs growth varies, depending on their specific direction determined by the strongly dynamic spatiotemporal variation of the thermosphere and ionosphere during storms. Therefore, the MSTIDs stormtime scenario results from a combination of multiple important factors. Key Points: The medium‐scale traveling ionospheric disturbances (MSTIDs) evolution under stormtime electrodynamic forcing is simulated for the first timeThe effect of stormtime large horizontal density gradients associated with storm‐enhanced density (SED) is considered in two‐dimensional MSTIDs simulationsThe development of MSTIDs is primarily influenced by storm electric fields and SED‐related density gradients [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1029/2023JA032051 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 1 Subjects: – SubjectFull: Ionosphere Type: general – SubjectFull: Thunderstorms Type: general – SubjectFull: Magnetic storms Type: general – SubjectFull: Storms Type: general – SubjectFull: Ionospheric disturbances Type: general – SubjectFull: Thermosphere Type: general Titles: – TitleFull: Simulation of Nighttime Medium‐Scale Traveling Ionospheric Disturbances in the Midlatitude Ionosphere During Stormtime. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Xiaochuan – PersonEntity: Name: NameFull: Lei, Jiuhou – PersonEntity: Name: NameFull: Zhang, Shun‐Rong – PersonEntity: Name: NameFull: Li, Zezhong – PersonEntity: Name: NameFull: Dang, Tong – PersonEntity: Name: NameFull: Luan, Xiaoli – PersonEntity: Name: NameFull: Dou, Xiankang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 06 Text: Jun2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 21699380 Numbering: – Type: volume Value: 129 – Type: issue Value: 6 Titles: – TitleFull: Journal of Geophysical Research. Space Physics Type: main |
| ResultId | 1 |
