Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System Scintillation at Dawn
Name
Space Weather - 2021 - Mrak - Extreme Low‐Latitude Total Electron Content Enhancement and Global Positioning System.pdf
Description
Published version
Size
3.07 MB
Format
Adobe PDF
Checksum (MD5)
672a70826571a86310d1be35144564e9
Author(s)
Mrak, Sebastijan
Semeter, Joshua
Nishimura, Yukitoshi
Coster, Anthea J
Date Issued
May 12, 2021
Journal
Space Weather
Publisher
American Geophysical Union
Citation
Mrak, S., Semeter, J., Nishimura, Y., & Coster, A. J. (2021). Extreme low-latitude total electron content enhancement and Global Positioning System scintillation at dawn. Space Weather, 19, e2021SW002740.
Version
Final published version
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.
MIT Department
Haystack Observatory
Terms of Use
Creative Commons Attribution-NonCommercial
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1029/2021SW002740
