Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at Dawn
Abstract We report on an extreme ionospheric plasma density enhancement and Global Positioning System (GPS) scintillation at dawn, observed within the expanding equatorial ionization anomaly (EIA). The total electron content (TEC) in central America reached 50 TECu at sunrise, the value almost twice...
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| Format: | Article |
| Language: | English |
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Wiley
2021-09-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2021SW002740 |
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| author | Sebastijan Mrak Joshua Semeter Yukitoshi Nishimura Anthea J. Coster |
| author_facet | Sebastijan Mrak Joshua Semeter Yukitoshi Nishimura Anthea J. Coster |
| author_sort | Sebastijan Mrak |
| collection | DOAJ |
| description | Abstract We report on an extreme ionospheric plasma density enhancement and Global Positioning System (GPS) scintillation at dawn, observed within the expanding equatorial ionization anomaly (EIA). The total electron content (TEC) in central America reached 50 TECu at sunrise, the value almost twice as high as the normal afternoon peak. The enhanced EIA expanded poleward and westward from just below 20° magnetic latitude (MLAT) to beyond 30° MLAT at sunrise. The chief ramification of the enhanced EIA was strong GPS scintillation which was observed poleward of 30° northern MLAT and lasted until 8:00 local time. In total, the amplitude scintillation and phase fluctuations lasted for ∼5 h at latitudes north of 20°MLAT in central America. |
| format | Article |
| id | doaj-art-c07cbda58a7a43d081dd6ef10e98ab42 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2021-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-c07cbda58a7a43d081dd6ef10e98ab422025-01-14T16:26:53ZengWileySpace Weather1542-73902021-09-01199n/an/a10.1029/2021SW002740Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at DawnSebastijan Mrak0Joshua Semeter1Yukitoshi Nishimura2Anthea J. Coster3Department of Electrical and Computer Engineering and Center for Space Physics Boston University Boston MA USADepartment of Electrical and Computer Engineering and Center for Space Physics Boston University Boston MA USADepartment of Electrical and Computer Engineering and Center for Space Physics Boston University Boston MA USAHaystack Observatory Massachusetts Institute of Technology Westford MA USAAbstract We report on an extreme ionospheric plasma density enhancement and Global Positioning System (GPS) scintillation at dawn, observed within the expanding equatorial ionization anomaly (EIA). The total electron content (TEC) in central America reached 50 TECu at sunrise, the value almost twice as high as the normal afternoon peak. The enhanced EIA expanded poleward and westward from just below 20° magnetic latitude (MLAT) to beyond 30° MLAT at sunrise. The chief ramification of the enhanced EIA was strong GPS scintillation which was observed poleward of 30° northern MLAT and lasted until 8:00 local time. In total, the amplitude scintillation and phase fluctuations lasted for ∼5 h at latitudes north of 20°MLAT in central America.https://doi.org/10.1029/2021SW002740equatorial ionization anomalyequatorial plasma bubblesgeomagnetic stormGPS scintillationsionospheric space weather |
| spellingShingle | Sebastijan Mrak Joshua Semeter Yukitoshi Nishimura Anthea J. Coster Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at Dawn Space Weather equatorial ionization anomaly equatorial plasma bubbles geomagnetic storm GPS scintillations ionospheric space weather |
| title | Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at Dawn |
| title_full | Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at Dawn |
| title_fullStr | Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at Dawn |
| title_full_unstemmed | Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at Dawn |
| title_short | Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at Dawn |
| title_sort | extreme low latitude total electron content enhancement and global positioning system scintillation at dawn |
| topic | equatorial ionization anomaly equatorial plasma bubbles geomagnetic storm GPS scintillations ionospheric space weather |
| url | https://doi.org/10.1029/2021SW002740 |
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