Day-to-Day Longitudinal Variability of Total Electron Content (TEC) in the African Equatorial Region Affected by the Equatorial Ionosphere Anomaly

Day-to-Day Longitudinal Variability of Total Electron Content (TEC) in the African Equatorial Region Affected by the Equatorial Ionosphere Anomaly | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 3 April 2025 V1 Latest version Share on Day-to-Day Longitudinal Variability of Total Electron Content (TEC) in the African Equatorial Region Affected by the Equatorial Ionosphere Anomaly Authors : Lake Endeshaw 0000-0002-6400-9448 [email protected] and Sandro Maria Radicella Authors Info & Affiliations https://doi.org/10.22541/au.174371595.55838706/v1 280 views 56 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Total Electron Content (TEC) estimated from GNSS data is a good indicator of the behavior of the ionosphere. This study searches for possible longitudinal differences between the behavior of TEC and its day-to-day variations between two ranges of longitudes in Equatorial Ionosphere Anomaly (EIA)-affected low-latitude African stations. The study considers TEC daily values at 05:00 and 13:00 LT for the high solar activity year 2014. In addition, the day-to-day variability of TEC at those given hours was calculated by analyzing the difference between two consecutive daily values of TEC (DIFFTEC) at the same hours. The correlation coefficients (R) and corresponding coefficient of determination (R²) were used to identify the possible correlation between data from two locations, each in the eastern and western sectors of the low-latitude African region. Also possible correlations between data from different longitudinal sectors were studied. Values of the correlation coefficient indicate that at 13:00 LT there is a reasonably high correlation between TEC in the same longitude sector but also between stations in the two longitude sectors considered. The correlation is much reduced in both cases at 05:00 LT. The day-to-day variability, as indicated by DIFFTEC, shows larger variability in the Eastern Sector than in the Western sector. At 05:00 LT, a seasonal variation with higher variability in DIFFTEC standard deviation in the equinoctial months appears in both sectors, being larger in the Eastern sector. Locations in both sectors have shown higher variability of DIFFTEC standard deviation at 13:00 LT than at 05:00 LT. Supplementary Material File (1028975_0_merged_1742929799.pdf) Download 1.93 MB File (endeshaw_manuscript_2025.pdf) Download 1.93 MB Information & Authors Information Version history V1 Version 1 03 April 2025 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords correlation equatorial african region gnss tec Authors Affiliations Lake Endeshaw 0000-0002-6400-9448 [email protected] Space Science and Geospatial Institute View all articles by this author Sandro Maria Radicella Boston College View all articles by this author Metrics & Citations Metrics Article Usage 280 views 56 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Lake Endeshaw, Sandro Maria Radicella. Day-to-Day Longitudinal Variability of Total Electron Content (TEC) in the African Equatorial Region Affected by the Equatorial Ionosphere Anomaly. Authorea . 03 April 2025. DOI: https://doi.org/10.22541/au.174371595.55838706/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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