The RI-URBANS Project Coordinators, Xavier Querol (CSIC) and Tuukka Petäjä (UHEL), in collaboration with ACTRIS ERIC, are pleased to invite you to the Final RI-URBANS Stakeholder Webinar, taking place online on Wednesday, 10 September 2025, from 09:00 to 13:00 CEST. This important event will present the final results of the RI-URBANS project, with a special focus on the Service Tools developed and the added value they bring to urban air quality monitoring and management. What to expect: Key insights and findings from the RI-URBANS project A deep dive into the Service Tools and their real-world applications Opportunities for discussion and stakeholder engagement A detailed agenda is available here.  Link: Zoom We warmly encourage all stakeholders, collaborators, and interested parties to join us for this milestone event. Register here by filling the online form. ️Registration deadline: 5 September 2025 You may have have any question, please do not hesitate to contact Marta Monge (marta.monge@idaea.csic.es) and Nahid Atashi (nahid.atashi@helsinki.fi).

RI-URBANS is pleased to invite you to two insightful webinars this September, focusing on innovative approaches in urban air quality monitoring. These sessions will explore state-of-the-art tools and methodologies developed within the RI-URBANS project, with contributions from experts across Europe.   Webinar on Urban Mapping This webinar will showcase Service Tool (ST13), designed to support Urban Mapping activities within the RI-URBANS framework. Attendees will gain a deeper understanding of how different mapping approaches—both mobile and stationary—are used to monitor air quality in urban environments. Date: September 19th, 10:00-12:00 CEST Format: Online (Zoom-link) Agenda: Introduction by project coordinators (5-10 min) RI-URBANS Service Tool for Urban Mapping (ST13) (20 min) Experiences with urban mapping (1 hour) Mobile mapping: Mobile mapping with citizens (20 min) Mobile mapping without citizens (20 min) Combined stationary-mobile approaches (20 min) Interactive part (30 min)

This session will focus on tools and strategies for Source Apportionment, helping identify and quantify pollution sources in urban environments. Details and speakers will be announced soon. Date: September 29th, 10:00-12:00 CEST Format: Online (Zoom-Link) Agenda is as follow, you could also find it here 10:00- 10:05    Introduction by project coordinators (Xavier Querol) 10:05 - 10:15    Source apportionment based on 24h resolution PM chemistry data (Fulvio Amato) 10:15 - 10:25    Source apportionment based on high-time resolution organic aerosol measurement (Marta Vía) 10:25 - 10:35    Source apportionment based on high-time resolution trace elements measurements (Mannos Manousaka) 10:35 - 10:45    Source apportionment based on datasets with different time-resolution (Marta Vía) 10:45 - 10:55   BC source apportionment (Marjan savadkoohi) 10:55 - 11:05    UFP source apportionment (Meritxell García) 11:05 - 11:15     OP source apportionment (Gaëlle Uzu) 11:15 - 11:25    VOC source apportionment (Xavier Querol) 11:25-11:35     Break 11:35 - 12:00 Q&A session  (All)