Research Interests

1. GNSS processing and analysis

Publications: Articles in Journals

1. Stoycheva A., I. Manafov, K. Vassileva and G. Guerova, 2017. Study of persistent fog in Bulgaria with Sofi a Stability Index, GNSS tropospheric products and WRF simulations. Journal of Atmospheric and Solar-Terrestrial Physics, 161, 160-169, doi:10.1016/j.jastp.2017.06.011.
2. Simeonov Tzv., K. Vasileva and G. Guerova, 2013. Application of ground-based GNSS meteorology in Bulgaria/Southeast Europe: case study 2007 heat wave. Annuaire de l'Universite de Sofia "St. Kliment Ohridski", Faculte de Physique, 106, 88-100.

Publications: Conference Proceedings

1. Stoev K., G. Guerova and K. Vassileva, "Use of GNSS tropospheric products to study the foehn in Sofia", 6th International Colloquium Scientific and Fundamental Aspects of the Galileo Programme, 25-27 October 2017, Valencia, Spain.
2. Guerova, G., Tzv. Simeonov and K. Vassileva: Comparison of GNSS Tropospheric Products Obtained by Two Processing Strategies, Proceedings of International symposium on modern technologies, education and professional practice in geodesy and related fields, Sofia, Bulgaria, 3-4/11/2016, 8 p. ISSN 2367-6051.
3. Simeonov Tzv., D. Sidorov, N. Teferle, G. Guerova E. Egova, K. Vassileva, I. Milev and G. Milev "Sofia University GNSS Analysis Centre", FIG working week, 17-21/05/2015, Sofia, Bulgaria.
4. Milev G, K. Vassileva, I. Milev, R. Pelovski, I. Andreev, G. Guerova, "Current status and activities of satellite ground-based system EUPOS and EUPOS-BG", EUPOS GNSS Symposia, 10.2013 Berlin, Germany.

Oral and poster presentations

1. Guerova, G., Tz. Dimitrova, M. Slavchev, K. Stoev, S. Georgiev, and K. Vassileva "BalkanMed real time severe weather service: progress and prospects in Bulgaria", 2019 EMS Annual Meeting: European Conference for Applied Meteorology and Climatology, 9-13 September 2019, Copenhagen, Denmark. (poster)
2. Guerova, G., Tz. Dimitrova, M. Slavchev, K. Stoev, S. Georgiev, and K. Vassileva "BalkanMed real time severe weather service: progress and prospects in Bulgaria", 7th International Colloquium Scientific and Fundamental Aspects of GNSS, 4-6 September 2019, Zurich, Switzerland. (oral)
3. Penov N., A. Stoycheva, I. Manafiov, K. Vassileva, and G. Guerova "NWP simulations of three fog cases at Sofia and Plovdiv airports", EGU 7-12/04/2019 Vienna Austria. (poster)
4. Stoev K., G. Guerova and K. Vassileva, "Use of GNSS tropospheric products to study the foehn in Sofia", 6th International Colloquium Scientific and Fundamental Aspects of the Galileo Programme, 25-27 October 2017, Valencia, Spain. (poster)
5. Stoycheva A., I. Manafov, K. Vassileva, G. Guerova, "Monitoring Prolonged Fog in January 2014 at Sofia with Sofia Stability Index and GNSS Tropospheric Products", 3nd National Physics Congress, 29/09-2/10/2016, Sofia, Bulgaria. (oral)
6. Stoycheva A., G. Guerova and K. Vassileva, "Fog case study with GNSS tropospheric products, Sofia Stability Index and WRF model", 16th EMS Annual Meeting & 11th European Conference on Applied Climatology, 12-16/09/2016, Trieste, Italy. (oral)
7. Guerova G., Tzv. Simeonov and K. Vassileva, "Comparison of IWV from PPP and PNP strategies for December 2013", GNSS4SWEC working group meeting, 1-2/09/2016, GFZ, Potsdam, Germany. (oral)
8. Stoycheva A., I. Manafov, K. Vassileva and G. Guerova, "Monitoring fog at Sofia Airport using GNSS tropospheric products and Sofia Stability Index", 3rd GNSS4SWEC workshop, 8-10/03/2016, Reykjavik, Iceland. (oral)
9. Guerova G., I. Manafov, K. Vassileva, "Fog forecast impact studies for Sofia Airport: Numerical Weather Prediction simulation and use of GNSS tropospheric products", 25th International symposium Modern technologies, education and professional practice in geodesy and related fields, 6/11/2015, Sofia, Bulgaria. (oral)
10. Simeonov Tzv., D. Sidorov, N. Teferle, G. Guerova, E. Egova, K. Vasileva, I. Milev and G. Milev, "SUGAC: Sofia University GNSS Analysis Centre", EGU annual assembley, Vienna, Austria, 13-17/04/2015. (poster)
11. Guerova G., I. Manafov and K. Vassileva, "Fog forecast impact studies for Sofia Airport: Numerical Weather Prediction simulation and use of GNSS tropospheric products", United Nations/ICTP Workshop on the Use of Global Navigation Satellite Systems for Scientific Applications, 1-5/12/2014, Trieste, Italy. (oral)
12. Simeonov Tzv., D. Sidorov, N. Teferle, G. Guerova, E. Egova, K. Vassileva, I. Milev and G. Milev, "One year comparison of IWV derived from GNSS in Bulgaria and the numerical weather prediction model WRF", 24rd International symposium Modern technologies, education and professional practice in geodesy and related fields, 7/11/2014, Sofia, Bulgaria. (oral)
13. Simeonov Tzv, D. Sidorov, N. Teferle, G. Guerova, E. Egova, K. Vassileva, I. Milev and G. Milev, "SUGAC: Sofia University GNSS Analysis Centre", IGS Workshop "Celebrating 20 Years of Service and looking forward toward the future", Pasadena, USA, 23-07/06/2014. (poster)