Faculty of Physics - University of Bucharest

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2024-11-22 1:53

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Conference: Bucharest University Faculty of Physics 2021 Meeting

Section: Theoretical Physics and Applied Mathematics

Title:

Local monitoring and forecasting the ionospheric Total Electron Content (TEC)

Authors:

Florin-Ioan CONSTANTIN (1, 2), Eugeniu Mihnea POPESCU (1), Gabriel CHIRITOI (1), Eduard NASTASE (3), Alexandra MUNTEAN (3)

^*
Affiliation:

1) Institute of Space Science, Magurele, Romania

2) Faculty of Physics, University of Bucharest, Romania

3) National Institute for Earth Physics, Magurele, Romania

E-mail

fliconstantin@spacescience.ro

Keywords:

ionosphere, TEC, map, electrons, satellite

Abstract:

The observables associated with the signals sent by the satellites of the GPS constellation allow for the monitoring of the total electron content (TEC) of the ionosphere. As the main factor that influences the TEC is solar activity and TEC perturbations can potentially disrupt a large number of modern services, from telecommunications to power distributions, the importance of monitoring and forecasting the ionospheric TEC becomes apparent. This presentation details the procedures and mathematical techniques that have been developed to estimate and forecast the ionospheric TEC and its variation and across the territory of Romania, and how they have been integrated into an online Space Weather service developed and hosted by the Institute of Space Science and the National Institute for Earth Physics.

References:

[1] J. Sanz-Subirana, J. M. Juan Zornoza și M. Hernández-Pajares, GNSS Data Processing. Vol. I: Fundamentals and Algorithms, Leiden: ESA Communications, 2013.

[2] D. McCarthy și G. Petit, „Models for atmospheric propagation delays,” in IERS Conventions, 2013.

[3] O. J. Sovers și J. L. Fanselow, „Observation Model and Parameter Partials for the JPL VLBI Parameter Estimation Software ”MASTERFIT”-1987,” JPL Publication, 1987

[4] A. J. Mannucci, B. D. Wilson și D. N. Yuan, „A global mapping technique for GPS-derived ionospheric total electron content measurements,” Radio Science, vol. 33, pp. 565-582, May-June 1998.

[5] W. H. Press, S. A. Teukolsky, W. T. Vetterling, B. P. Flannery, „Numerical Recipes - The Art of Scientific Computing", Third Edition, Cambridge University Press, 2007.

Acknowledgement:

This work was supported by a grant of the Romanian Ministery of Research and Innovation, CCCDI - UEFISCDI, project number PN-III-P1-1.2-PCCDI-2017-0266/16PCCDI/2018 , within PNCDI III.