Ionospheric Scale Index Map Based on TEC Data for Space Weather Studies and Applications

The present work shows the preliminary results from the analysis for developing an ionospheric scale index map based on the Disturbance Ionosphere indeX (DIX). This index aims to target all the different user groups affected by ionospheric disturbances, for example, the navigation, positioning, and...

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Bibliographic Details
Published in:Space weather 2020-09, Vol.18 (9), p.n/a
Main Authors: Denardini, C. M., Picanço, G. A. S., Barbosa Neto, P. F., Nogueira, P. A. B., Carmo, C. S., Resende, L. C. A., Moro, J., Chen, S. S., Romero‐Hernandez, E., Silva, R. P., Bilibio, A. V.
Format: Article
Language:English
Subjects:
geomagnetic storm
Geomagnetic storms
Geomagnetism
Ionosphere
ionospheric disturbance index
Ionospheric disturbances
Magnetic storms
neutral atmosphere
Satellite communications
Space weather
Total Electron Content
User groups
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Summary:The present work shows the preliminary results from the analysis for developing an ionospheric scale index map based on the Disturbance Ionosphere indeX (DIX). This index aims to target all the different user groups affected by ionospheric disturbances, for example, the navigation, positioning, and satellite communication users, in a simple and straightforward approach. Therefore, we used the vertical total electron content (VTEC) over South America to calculate the total electron content (TEC) maps covering latitudes from 60°S to 20°N and longitudes from 90°W to 30°W, with 0.5° × 0.5° resolution. Afterward, the DIX maps are obtained to reveal the variation of the TEC over an average quiet ionosphere background. In order to illustrate the use of the map index, the ionospheric disturbances after and during the 17–23 December 2015 intense geomagnetic storm and the 2015 Saint Patrick magnetic storm are discussed, highlighting the disturbances in the DIX at different latitudinal ranges and under different magnetic conditions. Key Points The new ionospheric index accounts for latitudinal dependence of the ionospheric response to external and internal low‐latitude dynamics It was provided in a regional map format covering South America The Global Navigation Satellite System (GNSS) database used in the present work comprised files from 200 receivers in South America
ISSN:1542-7390
1539-4964
1542-7390
DOI:10.1029/2019SW002328