A Statistical Analysis of the Morphology of Storm‐Enhanced Density Plumes Over the North American Sector.
Saved in:
| Title: | A Statistical Analysis of the Morphology of Storm‐Enhanced Density Plumes Over the North American Sector. |
|---|---|
| Authors: | Aa, Ercha1 (AUTHOR) aercha@mit.edu, Dzwill, Patricia1,2 (AUTHOR), Zhang, Shun‐Rong1 (AUTHOR) shunrong@mit.edu, Erickson, Philip J.1 (AUTHOR) |
| Source: | Journal of Geophysical Research. Space Physics. Jun2024, Vol. 129 Issue 6, p1-14. 14p. |
| Subject Terms: | *Geomagnetism, *Magnetic storms, Solar cycle, Ionospheric electron density, Global Positioning System, Space environment, Statistics |
| Abstract: | The storm‐enhanced density (SED) is a large‐scale midlatitude ionospheric electron density enhancement in the local afternoon sector, which exhibits substantial spatial gradients and thus can impose detrimental effects on modern navigation and communication systems, causing potential space weather hazards. This study has identified a comprehensive list of 49 SED events over the continental US and adjacent regions, by examining strong geomagnetic storms occurring between 2000 and 2023. The ground‐based Global Navigation Satellite System (GNSS) total electron content and data from a new TEC‐based ionospheric data assimilation system were used to analyze the characteristics of SED. For each derived SED events, we have quantified its morphology by employing a Gaussian function to parameterize key characteristics of the SED, such as the plume intensity, central longitude, and half‐width. A statistical analysis of SEDs was conducted for the first time to characterize their climatological features. We found that the SED distribution exhibits a higher peak intensity and a narrower width as geomagnetic activity strengthens. The peak intensity of SED has maximum values around the equinoxes in their seasonal distribution. Additionally, we observed a solar cycle dependence in the SED distribution, with more events occurring during the solar maximum and declining phases compared to the solar minimum. SED plumes exhibit a sub‐corotation feature with respect to the Earth, characterized by a westward drift speed between 50 and 400 m/s and a duration of 3–10 hr. These information advanced the current understanding of the spatial‐temporal variation of SED characteristics. Key Points: A comprehensive list of 49 storm‐enhanced density (SED) events over the continental US was identified for periods of intense geomagnetic storms during 2000–2023A first‐time statistical analysis of SEDs demonstrates their geomagnetic dependence, seasonal distribution, and solar cycle variationSEDs demonstrate a sub‐corotate feature with respect to the Earth, with westward drifting speeds of 50–400 m/s and a duration of 3–10 hr [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.) | |
| Database: | GreenFILE |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: 8gh DbLabel: GreenFILE An: 178071391 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: A Statistical Analysis of the Morphology of Storm‐Enhanced Density Plumes Over the North American Sector. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Aa%2C+Ercha%22">Aa, Ercha</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> aercha@mit.edu</i><br /><searchLink fieldCode="AR" term="%22Dzwill%2C+Patricia%22">Dzwill, Patricia</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Shun‐Rong%22">Zhang, Shun‐Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> shunrong@mit.edu</i><br /><searchLink fieldCode="AR" term="%22Erickson%2C+Philip+J%2E%22">Erickson, Philip J.</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="%22Geomagnetism%22">Geomagnetism</searchLink><br />*<searchLink fieldCode="DE" term="%22Magnetic+storms%22">Magnetic storms</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+cycle%22">Solar cycle</searchLink><br /><searchLink fieldCode="DE" term="%22Ionospheric+electron+density%22">Ionospheric electron density</searchLink><br /><searchLink fieldCode="DE" term="%22Global+Positioning+System%22">Global Positioning System</searchLink><br /><searchLink fieldCode="DE" term="%22Space+environment%22">Space environment</searchLink><br /><searchLink fieldCode="DE" term="%22Statistics%22">Statistics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The storm‐enhanced density (SED) is a large‐scale midlatitude ionospheric electron density enhancement in the local afternoon sector, which exhibits substantial spatial gradients and thus can impose detrimental effects on modern navigation and communication systems, causing potential space weather hazards. This study has identified a comprehensive list of 49 SED events over the continental US and adjacent regions, by examining strong geomagnetic storms occurring between 2000 and 2023. The ground‐based Global Navigation Satellite System (GNSS) total electron content and data from a new TEC‐based ionospheric data assimilation system were used to analyze the characteristics of SED. For each derived SED events, we have quantified its morphology by employing a Gaussian function to parameterize key characteristics of the SED, such as the plume intensity, central longitude, and half‐width. A statistical analysis of SEDs was conducted for the first time to characterize their climatological features. We found that the SED distribution exhibits a higher peak intensity and a narrower width as geomagnetic activity strengthens. The peak intensity of SED has maximum values around the equinoxes in their seasonal distribution. Additionally, we observed a solar cycle dependence in the SED distribution, with more events occurring during the solar maximum and declining phases compared to the solar minimum. SED plumes exhibit a sub‐corotation feature with respect to the Earth, characterized by a westward drift speed between 50 and 400 m/s and a duration of 3–10 hr. These information advanced the current understanding of the spatial‐temporal variation of SED characteristics. Key Points: A comprehensive list of 49 storm‐enhanced density (SED) events over the continental US was identified for periods of intense geomagnetic storms during 2000–2023A first‐time statistical analysis of SEDs demonstrates their geomagnetic dependence, seasonal distribution, and solar cycle variationSEDs demonstrate a sub‐corotate feature with respect to the Earth, with westward drifting speeds of 50–400 m/s and a duration of 3–10 hr [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.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=8gh&AN=178071391 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1029/2024JA032750 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 14 StartPage: 1 Subjects: – SubjectFull: Geomagnetism Type: general – SubjectFull: Magnetic storms Type: general – SubjectFull: Solar cycle Type: general – SubjectFull: Ionospheric electron density Type: general – SubjectFull: Global Positioning System Type: general – SubjectFull: Space environment Type: general – SubjectFull: Statistics Type: general Titles: – TitleFull: A Statistical Analysis of the Morphology of Storm‐Enhanced Density Plumes Over the North American Sector. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Aa, Ercha – PersonEntity: Name: NameFull: Dzwill, Patricia – PersonEntity: Name: NameFull: Zhang, Shun‐Rong – PersonEntity: Name: NameFull: Erickson, Philip J. 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 |
