Categorisation of infrasound signals originated from thunderstorms using the Central and Eastern European Infrasound Network

The Central and Eastern European Infrasound Network (CEEIN) has been operating since 2019 in a collaboration of Hungarian, Czech, Romanian, Austrian, and Ukrainian research institutes. The study aims to extend the process of categorisation of infrasound signals that has been previously applied to the Hungarian infrasound array (PSZI) to the other CEEIN stations. The method of associating infrasound signals with thunderstorms relies on correlating the detections both spatially and temporally to lighting data from the Worldwide Lightning Location Network (WWLLN), which is considered ground truth. As a result, over 30,000 infrasound detections were categorized as thunderstorm-originated in the period between 2019 and 2023. Based on the results, we analyse the capabilities of the CEEIN to detect thunderstorms.