![](\"https:\/\/www.atm.helsinki.fi\/peex\/wp-content\/uploads\/2025\/09\/Photo_4th_RI-URBANS_Science_Meet-300x157.jpg\" "\\"Photo_4th_RI-URBANS_Science_Meet\\"")
<\/span><\/div>The EU funded Horizon-2020 RI-URBANS project (Research Infrastructures Services Reinforcing Air Quality Monitoring Capacities in European Urban & Industrial AreaS;\u00a0<\/em>https:\/\/riurbans.eu<\/a>; 1 October 2021 \u2013 30 September 2025) final the 4th<\/sup>\u00a0Science Meeting took place in a hybrid mode during 8-9 September 2025 in Barcelona, Spain. It has been organized by the Spanish National Research Council (CSIC), the Institute for the Atmospheric and Earth System Research of the University of Helsinki (INAR-UHEL), and the Aerosol, Clouds and Trace Gases Research Infrastructure (ACTRIS) \u2013 European Research Infrastructure (ERIC). The CSIC hosted this event at the Resid\u00e8ncia D\u2019Investigadors premises in the cultural centre of the city of Barcelona. About 100 persons pre-registered for the event, and in total about 50 persons attended onsite, and about 40 persons attended online.<\/p>\n The first day, 8 September, started with the Introductory plenary session. A series of invited talks was delivered starting from an overview of the RI-URBANS project final results (by the RI-URBANS coordinators Xavier Querol, CSIC & Tuukka Pet\u00e4j\u00e4, UHEL), Implementation of new pollutants in the new Air Quality (AQ) Directive (by Lucia Bernal Saukkonen, DG ENV-EC),\u00a0 the network of National Air Quality Reference Laboratories (AQUILA) view on the new AQ pollutants in the new AQ Directive\u00a0 (by Annette Borowiak, Joint Research Center \u2013 European Commission, JRC-EC, AQUILA), the ACTRIS support for the implementation of the new AQ Directive (by Tuukka Pet\u00e4j\u00e4, UHEL), Data quality control for new AQ pollutants (by Alfred Wiedensohler, the representative of the ACTRIS \u2013 European Center for Aerosol Calibration and Characterization, CAIS-ECAC), Current view of the World Health Organization (WHO) on the new pollutants (by Wenlu Ye, WHO), How RI-URBANS results may be used by AQMNs (by Guido Lanzani, Agenzia Regionale per la Protezione dell\u2019Ambient, ARPA Lombard\u00eda), Innovative methods for AQ monitoring and modelling at transport hotspots (by Kostas Eleftheriadis, National Centre For Scientific Research Demokritos, NSCR-Demokritos), and Approach to numerical modelling of oxidative potential with the System for Integrated Modeling of Atmospheric Composition (SILAM) Chemical Transport Model (CTM) (by\u00a0 Mikhail Sofiev, Finnish Meteorological Institute). This session followed by session on the final results of the RI-URBANS WorkPackages (WP), where the WPs Leaders presented summaries of the results achieved during the project lifetime, with discussion including beyond the project lifetime. At the end, the RI-URBANS Steering Committee (WPs Leaders, Data Manager, Innovation Manager, Risk manager) meeting took place.<\/p>\n During the second day, 9 September, a series of presentations about the RI-URBANS\u2019 Service Tools (STs): Final Versions & How to Upgrade (if needed) was delivered. These included the following:<\/p>\n Protocols for the measurement of novel AQ pollutants<\/strong><\/p>\n Methodologies for vertical profiles of pollutants and meteorology<\/strong><\/p>\n Methodologies for source apportionment receptor modelling<\/strong><\/p>\n Methodologies for urban mapping of novel AQ pollutants<\/strong><\/p>\n Methodologies for evaluating the health effects of novel AQ pollutants<\/strong><\/p>\n Obtaining emission inventories for novel AQ pollutants<\/strong><\/p>\n Modelling methodologies for novel AQ pollutants<\/strong><\/p>\n At the end, final discussions followed with a \u00a0wrap up including on how member states are building supersites.<\/p>\n The RI-URBANS project:<\/p>\n On the third day, 10 September, the final RI-URBANS\u2019 stakeholder webinar took place online. For this event, more than 320 persons pre-registered, and more than160 attended. This webinar described the final results of the RI-URBANS project, with a major focus on the Service Tools (STs) and the added value of implementing these STs. These give guidance for surface and profile measurements, source apportionment, health assessment, mapping, emission inventories, and modelling. These may support the implementation of the supersites and new pollutants in the Air Quality Directive (EU) 2024\/2881 together with ACTRIS-ERIC. A series of delivered presentations included: Concept and results from RI-URBANS, the Service Tools; Roles of ACTRIS for the implementation of STs; Supporting publication of Guidance Documents by the AXA Research Fund; Urban mapping tools, representativity of the AQ monitoring sites; Measurements of oxidative potential; Health effects of the new pollutants; and Modelling of new pollutants; followed by discussions.<\/p>\n Note that the previous 3rd<\/sup>\u00a0Annual Science Meetings of the RI-URBANS project took place in a hybrid mode during 25-26 September 2024 in Helsinki, Finland, which gathered in total 135 participants. The\u00a0presentations<\/a>\u00a0from the 3rd<\/sup>\u00a0Science Meeting are publicly available at the RI-URBANS public website. And the presentations from the last 4th<\/sup>\u00a0Science Meeting will be also soon publicly available.<\/p>\n News from the RI-URBANS PCT team: Xavier Querol, Marta Monge, CSIC & Tuukka Pet\u00e4j\u00e4, Nahid Atashi, Alexander Mahura, UHEL<\/em><\/p>\n<\/div><\/div>\n
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