Millas, Dimitrios ; Maneva, Yana ; Verstringe, Freek ; Poniatowski, Luka ; Shukhobodskaia, Daria ; de Patoul, Judith

Talk presented at European Space Weather Week 2025, Umeå on 2025-10-30

Abstract: The Solar-Terrestrial Center of Excellence (STCE) plays an essential role in the Pan-European Consortium for Aviation Space weather User Services (PECASUS), providing specialized space weather services to the International Civil Aviation Organization (ICAO). The role of STCE is to act as a central data hub for the consortium and to provide 24/7 monitoring of the space weather conditions, generating advisory content once the ICAO requirements for issuing of space weather advisories are met. The goal of this work is to present the latest developments and updates of our service, aligned with the new ICAO requirements for the service provision. We discuss the ongoing transition to events area selection based on multi-point polygons instead of using pre-defined latitudinal and longitudinal bands. We present the envisioned advisory generation workflow and show examples of the future ICAO-compliant advisories, which would become in effect starting from November 2025. In addition, we describe our latest updates in the internal alerting system, including detection and visualisation of GNSS events (amplitude or phase scintillations, as well as vertical total electron content/VTEC enhancements).