SHORT-TERM PREDICTION OF THE IONOSPHERIC CRITICAL FREQUENCIES OVER BULGARIA
Bulgarian Geophysical Journal, 2020, Vol. 43, DOI: https://doi.org/10.34975/BGJ-2020.43.7
Rumiana Bojilova, Plamen Mukhtarov
Abstract:
An empirical model has been developed for short-term forecasting of ionospheric critical frequencies over Bulgaria, taking into account the variations in solar and geomagnetic activity. The model is based on data from the vertical sounding of the ionosphere over Bulgaria for the period 1995-2014 and designed to prepare real-time forecasts for the propagation of radio waves during ionospheric reflection on the territory of Bulgaria.
Keywords:
ionosphere, critical frequency, geomagnetic storm, solar activity
Acknowledgements:
The present work is supported by the Bulgarian Ministry of Education and Science under the National Research Programme “Young scientists and postdoctoral students” approved by DCM № 577/ 17.08.2018. The presentation of the results is financed by Contract No D01-282/17.12.2019 – Project “National Geoinformation Center (NGIC)” funded by the National Roadmap for Scientific Infrastructure 2017-2023 of Bulgaria.
Author information:
Author: Rumiana Bojilova
E-mail: rbojilova@geophys.bas.bg
Affiliation: National Institute of Geophysics, Geodesy and Geography – BAS, str. Acad. G. Bonchev, bl. 3, Sofia 1113, Bulgaria
Author: Plamen Mukhtarov
E-mail: engpjm@abv.bg
Affiliation: National Institute of Geophysics, Geodesy and Geography – BAS, str. Acad. G. Bonchev, bl. 3, Sofia 1113, Bulgaria
How to cite:
Bojilova, R., & Mukhtarov, P. (2020). Short-term prediction of the ionospheric critical frequencies over Bulgaria. Bulgarian Geophysical Journal, Vol. 43, p. 81-88. https://doi.org/10.34975/BGJ-2020.43.7