Computational study demonstrates automated near-real-time estimation of ionospheric total electron content from GPS networks, highlighting improved accessibility for space weather monitoring.
The variability of space weather can best be captured using total electron content (TEC), which corresponds to total number of electrons on a ray path. The dual‐frequency ground based GPS receivers provide a cost‐effective means for monitoring TEC. Computation of TEC for a single GPS station is a challenge due to various unknowns and ambiguities such as inter‐frequency receiver bias and satellite bias, choice of mapping function, and peak height of ionosphere for ionospheric piercing point. In this study, IONOLAB group introduces a robust, automatic, online computation routine near‐real time TEC, IONOLAB‐TEC, for IGS and/or EUREF stations from www.ionolab.org . The user can choose online one station or multiple stations, date or dates for the computation. The IONOLAB‐TEC values can be compared with TEC estimates from IGS analysis centers. The output can be obtained either in graphical form, or IONOLAB‐TEC estimates can be provided in an excel file. The service is easy to use with a graphical user interface. This unique and original space weather application is provided online, and IONOLAB‐TEC estimates are downloaded automatically to the user defined directories under user defined filenames.
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Sezen et al. (2013) studied this question.
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